2018 CAMA Annual Report

526 South Church St.
DUKE
Charlotte, NC 28202
Mailing Address
ENE R�Y7
P.O. Box 1006
Mail Code EC 1
Charlotte, NC 2828201-1006
980-373-2779
April 30, 2019
North Carolina Department of Environmental Quality
Division of Water Resources
Asheville Regional Office
2090 U.S. 70 Highway
Swannanoa, NC 28778
Attn: Mr. Ted Campbell (submitted electronically via FTP)
Re: 2018 Cliffside CAMA Annual Report
Rogers Energy Complex (Cliffside Steam Station)
573 Duke Power Road
Mooresboro, NC 28114
Dear Mr. Campbell:
Enclosed you will find the 2018 CAMA Annual Report prepared by SynTerra Corporation for the
Duke Energy Rogers Energy Complex (Cliffside Steam Station). This Annual Report documents
the information required by the Department of Environmental Quality per the letter dated May 1,
2017.
If you have any questions or need any clarification regarding the information provided, feel free
to contact me at [e-mail] or at 980-373-2779 at your convenience.
Respectfully submitted,
/)� 4917--
Ryan Czop
Duke Energy, Environmental Services
cc (via email): Mr. Eric Smith — DEQ Central Office
Mr. Steve Lanter — DEQ Central Office
Mr. Ed Sullivan - Duke Energy
Mr. Scott Davies — Duke Energy
Mr. Scott Spinner — SynTerra

2018 LAMA ANNUAL INTERIM
MONITORING REPORT
FOR
ROGERS ENERGY COMPLEX
CLIFFSIDE STEAM STATION
573 DUKE POWER ROAD
MOORESBORO,, NC 28114
APRIL 30, 2019
PREPARED FOR:
DUKE ENERGY CAROLINAS, LLC
DUKE
., ENERGY
PREPARED BY:
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2018 LAMA ANNUAL INTERIM
MONITORING REPORT
FOR
ROGERS ENERGY COMPLEX
CLIFFSIDE STEAM STATION
573 DUKE POWER ROAD
MOORESBORO� NC 28114
APRIL 30, 2019
PREPARED FOR
DUKE ENERGY CAROLINAS,. LLC
& DUKE
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PREPARED BY
SYNTERRA CORPORATION
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2018 CAMA Annual Interim Monitoring Report April 30, 2019
Duke Energy Carolinas, LLC - Rogers Energy Complex - Cliffside Steam Station SynTerra
EXECUTIVE SUMMARY
ES.1 Introduction
This annual report evaluates the results of groundwater monitoring performed on a
quarterly basis during the 2018 calendar year at the Duke Energy Carolinas, LLC (Duke
Energy) Rogers Energy Complex - Cliffside Steam Station (Cliffside, CSS, Plant, or Site).
The Site is an electricity -generating facility powered by coal and natural gas near the
town of Mooresboro in Rutherford and Cleveland Counties, North Carolina.
Monitoring was performed in accordance with the requirements of the Coal Ash
Management Act (CAMA) of 2014 (15A North Carolina Administrative Code [NCAC]
13B .2001), in correspondence with the North Carolina Department of Environmental
Quality (NCDEQ), and based on the Interim Monitoring Plan (IMP) developed for the
Site.
A generalized conceptual site model (CSM) has previously been developed for the Site.
The active ash basin (AAB) and inactive Unit 5 ash basin (U5 basin) were constructed
within former perennial stream valleys in the Piedmont of North Carolina. The former
Units 1-4 ash basin (U1-4 basin) was constructed within a low-lying area along the
Broad River. These hydrogeologic settings limit constituent of interest (COI) transport
in groundwater. Quarterly groundwater monitoring data from 2018 confirms the CSM
findings. Data support that:
• Topographic ridges of the Piedmont valley setting encompassing the ash basins
inhibit lateral flow.
• Naturally occurring upward vertical gradients to former perennial stream
channels inhibit downward migration of COIs into the underlying groundwater
upgradient from the ash basin dams.
• Neutral gradients within impounded coal ash promote horizontal flow within
the ash basins.
• In the vicinity of the AAB dams, groundwater flows downward beneath the
dams due to the operating hydraulic head of the ponded water within the AAB.
• Beyond the dams, groundwater flows upward toward the perennial stream
discharge zones, limiting downward migration of COIs to the area in close
proximity to the dams.
• Exceptions include the ash storage area and U5 basin, where very little saprolite
and alluvium beneath ash pore water contributes to COI migration into the deep
flow zone.
ES-1

2018 CAMA Annual Interim Monitoring Report April 30, 2019
Duke Energy Carolinas, LLC - Rogers Energy Complex - Cliffside Steam Station SynTerra
The distribution and concentration of COIs in groundwater within the shallow, deep,
and bedrock flow zones are evaluated with respect to historical Site conditions.
Changes to Site conditions that occurred during 2018 that pertain to the source areas
and groundwater conditions at the Site are also documented and discussed.
ES.2 Key Findings
Key findings of the quarterly CAMA data for 2018 include:
• The AAB, ash storage area, U14 basin, and U5 basin are considered the
primary sources of coal combustion residuals (CCR)-related constituents in
groundwater at the Site.
• The current distribution of COIs at the CSS is contained within the Site with
the potential exception of a small parcel (approximately 0.5 acre) northeast of
the AAB.
• Sampling in the Broad River and Suck Creek indicate there are no surface
water concentrations greater than criteria (15A NCAC 2B) attributable to the
ash basins.
• No imminent hazards to public health and safety have been identified.
• Groundwater flow direction at CSS is generally to the north based on the Site
stream valley orientation. This setting is consistent with the slope -aquifer
system model common to the Piedmont Physiographic Province (LeGrand,
2004). Importantly, Site groundwater flows away from potential water supply
well receptors located upgradient and side -gradient of CSS.
• The CSS ash basins are horizontal water flow -through systems with upward
hydraulic gradients into the former stream valleys at upgradient ends of the
basins. Hydraulic gradients are predominantly horizontal across most of the
basin. Hydraulic gradients are downward proximate to the basin dams due to
the hydraulic head in the basins near the dams. Upward vertical gradients
occur downstream of the dams in the vicinity of receiving water bodies
(groundwater discharge areas). This horizontal water flow -through system
limits downward vertical migration of COIs into groundwater to the areas
proximate to the dams.
• Pumping tests conducted in 2018 within the AAB support that flow within
ash pore water is predominantly horizontal, with limited evidence of
downward vertical migration into groundwater within saprolite immediately
underlying ash in the AAB.
ES-2

2018 CAMA Annual Interim Monitoring Report April 30, 2019
Duke Energy Carolinas, LLC - Rogers Energy Complex - Cliffside Steam Station SynTerra
• Boron, strontium, sulfate, and manganese are key constituents in
groundwater associated with the ash basins and ash storage area. Other COIs
identified as being greater than the respective standards and background
values in groundwater are encompassed by the distribution of those
constituents and/or have localized distributions on -Site.
• COIs in groundwater at the CSS appear to be generally stable (not expanding)
based on 2018 data when compared to historical Site data. No significant
concentration or water level changes were observed in the 2018 dataset. Some
possible data trends are under evaluation as part of the Corrective Action
Plan.
• The 2018 Comprehensive Site Assessment (CSA) update (SynTerra, 2018)
identified a few areas where additional assessment data would be useful.
Therefore, additional monitoring wells were installed and are planned to be
sampled in 2019, and the results incorporated into the 2019 Corrective Action
Plan (CAP) update.
• Deep bedrock wells have been installed in the vicinity of the ash basin dams
in order to delineate the vertical extent of COIs in fractured bedrock. Deep
bedrock wells were not sampled until 2019 and results are not available for
this report. Data from those wells will be incorporated into the CAP Update.
• Additional assessment of a potential additional source area in the vicinity of
CSS electric generating Unit 6, located west of Suck Creek, is ongoing. Results
from groundwater samples taken from wells installed for this source area will
be incorporated into in the upcoming CAP if assessment determines
conditions are related to COI migration from the AAB. Results from
groundwater samples taken from wells installed for this source area will be
incorporated into a CSA report to be submitted in early 2020 if the assessment
determines conditions are related to a separate source area west of Suck
Creek.
• Additional assessment is also planned to further evaluate potential underflow
of Suck Creek west of the AAB Upstream Dam. Results of flow and transport
modeling will also provide further understanding of conditions in this area.
ES.3 Interim Monitoring Plan Updates
Duke Energy submitted an optimized IMP to NCDEQ on March 20, 2019 which was
approved on April 4, 2019. The optimized IMP adjusts the wells, monitoring frequency,
and water quality parameter lists to more efficiently monitor groundwater conditions at
the Site. The optimized 2019 IMP is designed to provide data associated with changes to
ES-3

2018 CAMA Annual Interim Monitoring Report April 30, 2019
Duke Energy Carolinas, LLC - Rogers Energy Complex - Cliffside Steam Station SynTerra
the Site groundwater occurrence, flow, and quality as remedial efforts (e.g., ash basin
decanting, closure) are phased in.
Please note that the list of Site -specific COIs for inclusion into the CAPs is currently
undergoing review using the COI management approach presented to the NCDEQ on
March 15, 2019. COIs proposed for management under the CAPs would be based on:
• Comparing constituent concentrations to regulatory standards and/or
background values
• Evaluating each constituent's relative mobility
• Reviewing constituent distribution in groundwater based on geochemical
conditions
• Comparing each constituent's relative concentration observed in ash pore water
to the concentration observed in groundwater
• Evaluating constituent concentration trends over time
The results of this review will be presented in the CAP and may result in proposed
modifications to the monitoring program at that time.
ES-4

2018 CAMA Annual Interim Monitoring Report April 30, 2019
Duke Energy Carolinas, LLC - Cliffside Steam Station SynTerra
TABLE OF CONTENTS
SECTION
PAGE
EXECUTIVE SUMMARY....................................................................................................
ES-1
ES.1 Introduction............................................................................................................
ES-1
ES.2 Key Findings...........................................................................................................
ES-2
ES.3 Interim Monitoring Plan Updates.......................................................................
ES-3
1.0 INTRODUCTION.........................................................................................................1-1
1.1 Objectives and Purpose............................................................................................1-1
1.2 Site Overview/History..............................................................................................1-2
1.3 Changing Site Conditions........................................................................................1-4
1.4 Regional Hydrogeology...........................................................................................1-4
1.5 Site Hydrogeology....................................................................................................1-5
1.6 Previous Reporting...................................................................................................1-7
1.7 Overview of Findings for 2018................................................................................1-8
2.0 2018 MONITORING ACTIVITIES........................................................................... 2-1
2.1 2018 Quarterly Sampling Schedule........................................................................ 2-1
2.2 Changes to the CAMA Groundwater Monitoring Network .............................. 2-1
2.3 Water Level Measurements.....................................................................................2-4
2.4 Groundwater Sampling Methods...........................................................................2-4
2.5 Laboratory Analyses................................................................................................. 2-5
2.6 Quality Control Summary (Data Validation).......................................................2-5
3.0 2018 MONITORING RESULTS.................................................................................3-1
3.1 Site -Wide Groundwater Occurrence and Flow .................................................... 3-1
3.1.1 Active Ash Basin................................................................................................. 3-3
3.1.2 Former Units 1-4 Ash Basin............................................................................... 3-8
3.1.3 Unit 5 Inactive Ash Basin................................................................................... 3-9
3.1.4 Horizontal Gradients........................................................................................3-13
3.1.5 Vertical Gradients.............................................................................................
3-15
3.1.6 Groundwater Seepage Velocity......................................................................
3-18
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2018 CAMA Annual Interim Monitoring Report April 30, 2019
Duke Energy Carolinas, LLC - Cliffside Steam Station SynTerra
TABLE OF CONTENTS (CONTINUED)
SECTION
PAGE
3.2 Data Reduction and Evaluation............................................................................3-20
3.3 Active Ash Basin Water Quality...........................................................................3-24
3.3.1 Site Conditions..................................................................................................
3-24
3.3.2 Constituent Occurrence and Plume Status ...................................................
3-25
3.4 Former Units 1-4 Ash Basin Water Quality.........................................................3-41
3.4.1 Site Conditions..................................................................................................
3-41
3.4.2 Constituent Occurrence and Plume Status ...................................................
3-42
3.5 Unit 5 Inactive Ash Basin Water Quality.............................................................3-45
3.5.1 Site Conditions..................................................................................................
3-45
3.5.2 Constituent Occurrence and Plume Status ...................................................
3-46
4.0 SUMMARY AND CONCLUSIONS.........................................................................4-1
4.1 Groundwater Occurrence and Flow......................................................................4-1
4.2 Groundwater Quality...............................................................................................
4-2
5.0 INTERIM MONITORING PLAN UPDATES.........................................................
5-1
5.1 Optimization of the Monitoring Program.............................................................
5-1
5.2 2019 Monitoring and Reporting Schedule.............................................................5-2
6.0 REFERENCES................................................................................................................
6-1
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2018 CAMA Annual Interim Monitoring Report April 30, 2019
Duke Energy Carolinas, LLC - Cliffside Steam Station SynTerra
LIST OF FIGURES
Figure 1-1 Site Location Map
Figure 1-2 Site Map with Monitoring Well Locations
Figure 3-1 Water Level Map (East) - Shallow Flow Zone (October 22, 2018)
Figure 3-2 Water Level Map (East) - Deep Flow Zone (October 22, 2018)
Figure 3-3 Water Level Map (East) - Bedrock Flow Zone (October 22, 2018)
Figure 3-4 Water Level Map (West) - Shallow Flow Zone (October 22, 2018)
Figure 3-5 Water Level Map (West) - Deep Flow Zone (October 22, 2018)
Figure 3-6 Water Level Map (West) - Bedrock Flow Zone (October 22, 2018)
Figure 3-7 Hydrographs - AAB - Upgradient and Within AAB and Ash Storage Area
Figure 3-8 Hydrographs - AAB - Within AAB Dams and Downgradient
Figure 3-9 Hydrographs - U1-4 Basin
Figure 3-10 Hydrographs - U5 Basin - Upgradient and Within U5 Basin
Figure 3-11 Hydrographs - U5 Basin - Within U5 Basin Dams and Downgradient
Figure 3-12 Flow Velocity Vectors and Magnitudes in Transition Zone
Figure 3-13 Flow Velocity Vectors and Magnitudes in Transition Zone/Upper
Fractured Bedrock
Figure 3-14 Flow Velocity Vectors and Magnitudes in Upper Fractured Bedrock
Figure 3-15 Flow Velocity Vectors and Magnitudes through AAB Downstream Dam
Figure 3-16 General Cross Section A -A' - Active Ash Basin
Figure 3-17 General Cross Section J-J' - Ash Storage Area
Figure 3-18 General Cross Section K-K' - Active Ash Basin
Figure 3-19 General Cross Section H-H' - Former Units 1-4 Ash Basin
Figure 3-20 General Cross Section L-L' - Inactive Unit 5 Ash Basin
Figure 3-21 General Cross Section D-D' - Inactive Unit 5 Ash Basin
Figure 3-22 General Cross Section E-E' - Inactive Unit 5 Ash Basin
Figure 3-23 Isoconcentration Map - Geomean of Boron in Shallow Flow Zone
Figure 3-24 Isoconcentration Map - Geomean of Boron in Deep Flow Zone
Figure 3-25 Isoconcentration Map - Geomean of Boron in Bedrock Flow Zone
Figure 3-26 Isoconcentration Map - Geomean of Strontium in Shallow Flow Zone
Figure 3-27 Isoconcentration Map - Geomean of Strontium in Deep Flow Zone
Figure 3-28 Isoconcentration Map - Geomean of Strontium in Bedrock Flow Zone
Figure 3-29 Isoconcentration Map - Geomean of Sulfate in Shallow Flow Zone
Figure 3-30 Isoconcentration Map - Geomean of Sulfate in Deep Flow Zone
Figure 3-31 Isoconcentration Map - Geomean of Sulfate in Bedrock Flow Zone
Figure 3-32 Isoconcentration Map - Geomean of Manganese in Shallow Flow Zone
Figure 3-33 Isoconcentration Map - Geomean of Manganese in Deep Flow Zone
Figure 3-34 Isoconcentration Map - Geomean of Manganese in Bedrock Flow Zone
Page iii

2018 CAMA Annual Interim Monitoring Report April 30, 2019
Duke Energy Carolinas, LLC - Cliffside Steam Station SynTerra
LIST OF FIGURES (CONTINUED)
Figure 3-35
Time Series Plots
- AAB East 1
Figure 3-36
Time Series Plots
- AAB East 2
Figure 3-37
Time Series Plots
- AAB North 1
Figure 3-38
Time Series Plots
- AAB North 2
Figure 3-39
Time Series Plots
- AAB North 3
Figure 3-40
Time Series Plots
- AAB North 4
Figure 3-41
Time Series Plots
- AAB West 1
Figure 3-42
Time Series Plots
- AAB West 2
Figure 3-43
Time Series Plots
- AAB West 3
Figure 3-44
Time Series Plots
- AAB South 1
Figure 3-45
Time Series Plots
- AAB South 2
Figure 3-46
Time Series Plots
- U1-4 Basin
Figure 3-47
Time Series Plots
- U5 Basin East
Figure 3-48
Time Series Plots
- U5 Basin West 1
Figure 3-49
Time Series Plots
- U5 Basin West 2
LIST OF TABLES
Table 1-1 Monitoring Well Construction Information
Table 2-1 2018 CAMA Water Elevations
Table 3-1 Horizontal Hydraulic Gradients and Flow Velocities
Table 3-2 Vertical Hydraulic Gradients
Table 3-3 2018 Comprehensive Groundwater Quality Data
Table 3-4 Data Qualifiers and Acronyms
Table 3-5 Geometric Mean of COIs - 2018 Quarterly Data
Table 3-6 Constituents of Interest Evaluation
Table 3-7 Groundwater Background Threshold Values and Regional Background
Concentration Ranges
LIST OF APPENDICES
Appendix A Correspondence with NCDEQ
Appendix B Field Data and Forms
• Groundwater Sampling Forms
• Water Level Measurements
• Boring Logs - Wells Installed in 2018
• Well Construction Records - Wells Installed in 2018
• Well Abandonment Records - Wells Abandoned in 2018
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2018 CAMA Annual Interim Monitoring Report April 30, 2019
Duke Energy Carolinas, LLC - Cliffside Steam Station SynTerra
LIST OF APPENDICES (CONTINUED)
Appendix C Approved Low Flow Sampling Plan
Appendix D Laboratory Analytical Data (Laboratory Reports)
and Data Validation Checklists
• Quarter 1-2018
• Quarter 2-2018
• Quarter 3-2018
• Quarter 4-2018
Appendix E Optimized Interim Monitoring Plans for 2019
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2018 CAMA Annual Interim Monitoring Report April 30, 2019
Duke Energy Carolinas, LLC - Cliffside Steam Station SynTerra
LIST OF ACRONYMS
2B
NCAC Title 15A, Subchapter 02B. Surface Water and Wetland
Standards
02L
NCAC Title 15A, Subchapter 02L. Groundwater Classification and
Standards
AAB
Active ash basin
BGS
Below Ground Surface
BR
Bedrock
BTV
Background Threshold Value
°C
Celsius
CAMA
Coal Ash Management Act
CAP
Corrective Action Plan
CCR
Coal Combustion Residuals
CFR
Code of Federal Regulations
Cliffside
Cliffside Steam Station
COC
Chain of Custody
COI
Constituent of Interest
CSA
Comprehensive Site Assessment
CSM
Conceptual Site Model
CSS
Cliffside Steam Station
DFA
Dry Fly Ash
dh/dl
Vertical hydraulic gradients
DO
Dissolved Oxygen
DQO
Data Quality Objective
Duke Energy
Duke Energy Carolinas, LLC
DWM
Division of Waste Management
DWR
Division of Water Resources
EMP
Effectiveness Monitoring Plan
EPRI
Electric Power Research Institute
FGD
Flue Gas Desulfurization
ft
feet
IMAC
Interim Maximum Allowable Concentration
IMP
Interim Monitoring Plan
K
hydraulic conductivity
LRB
Lined Retention Basin
MARLAP
Multi -Agency Radiological Laboratory Analytical Protocols
µg/L
Micrograms per liter
mg/L
Milligrams per liter
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2018 CAMA Annual Interim Monitoring Report April 30, 2019
Duke Energy Carolinas, LLC - Cliffside Steam Station SynTerra
LIST OF ACRONYMS CONTINUED
mm
Millimeter
NC
North Carolina
NCAC
North Carolina Administrative Code
NCDEQ
North Carolina Department of Environmental Quality
NPDES
National Pollutant Discharge Elimination System
PBTV
Provisional Background Threshold Value
Plant/Site
Rogers Energy Complex - Cliffside Steam Station
S.U.
Standard Units
SW
Surface Water
TDS
Total Dissolved Solids
U1-4 basin
Former Units 1-4 ash basin
U5 basin
Unit 5 inactive ash basin
USEPA
United States Environmental Protection Agency
Page vii

2018 CAMA Annual Interim Monitoring Report April 30, 2019
Duke Energy Carolinas, LLC - Rogers Energy Complex - Cliffside Steam Station SynTerra
1.0 INTRODUCTION
1.1 Objectives and Purpose
The purpose of this report is to evaluate the data from the Interim Monitoring Plan
(IMP) at the Rogers Energy Complex - Cliffside Steam Station (Cliffside, CSS, Plant, or
Site) for the 2018 calendar year. The objective of the 2018 IMP was to perform
groundwater monitoring to meet the requirements of the Coal Ash Management Act
(CAMA) of 2014 (15A North Carolina Administrative Code [NCAC] 13B .2001).
Quarterly sampling was performed on monitoring wells designated as part of the IMP
in correspondence from the North Carolina Department of Environmental Quality
(NCDEQ), dated December 20, 2017 (revised January 23, 2018); April 6, 2018; June 29,
2018; and September 28, 2018 (Appendix A). Wells were added to the IMP as they were
installed or removed if abandoned and documented in the quarterly IMPs received
from NCDEQ, as discussed in Section 2.2.
An Effectiveness Monitoring Program (EMP) is required by CAMA §130A-309.209
(b)(1)e. The EMP for the CSS is anticipated to begin once ash basin closure and the
groundwater Corrective Action Plan (CAP) have been implemented. In the interim, an
IMP has been developed at the direction of NCDEQ.
This report is prepared in accordance with NCDEQ's Division of Water Resources
(DWR) 2017 guidance document for the investigation of soil and groundwater
contamination (NCDEQ, 2017). Data were evaluated for groundwater quality,
occurrence, and flow at the Site. Constituents of interest (COIs) are those parameters
with concentrations in groundwater greater than one or more of the groundwater
screening criteria (NCAC 02L standard [2L standard], Interim Maximum Allowable
Concentration [IMAC], or approved background threshold value [BTV]).
The distribution and concentration of COIs in groundwater within the shallow, deep,
and bedrock flow zones are discussed and evaluated with respect to historical Site
conditions. Changes to Site conditions that occurred during 2018 and that pertain to the
source areas and groundwater conditions at the Site are also documented and
discussed.
Geometric means (geomeans) of the COI data were calculated to support the analysis of
groundwater conditions and to provide a basis for defining the extent of the COI
plumes in 2018. The geomean method was selected in order to capture the central
tendency of the data, which may vary over several orders of magnitude. Reported
geomeans were calculated using the four quarters of IMP data from 2018. A single
sample result may not be an accurate representation of the concentrations observed
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2018 CAMA Annual Interim Monitoring Report April 30, 2019
Duke Energy Carolinas, LLC - Rogers Energy Complex — Cliffside Steam Station SynTerra
over four quarters of data in 2018. Evaluating plume geometries with geomean data
minimizes the potential for incorporating occasions when COIs are reported at
concentrations outside of the typical concentration range for a given sample location.
Previous site assessments may have over -represented areas impacted by the ash basins
by posting a single data set on maps and cross -sections that may have included isolated
data anomalies. Rationale and procedures for calculating geomeans are discussed in
greater detail in Section 3.2.
1.2 Site Overview/History
The CSS is owned and operated by Duke Energy Carolinas, LLC (Duke Energy). The
Plant is powered by coal and natural gas that generates electrical power for thousands
of customers in North Carolina. CSS is situated on approximately 1,000 acres of
company -owned property along the Broad River in Rutherford and Cleveland
Counties, North Carolina (Figure 1-1).
Coal combustion residuals (CCR) have historically been managed by depositing ash
within three ash basins (surface impoundments): the former Units 1-4 ash basin (U14
basin), Unit 5 inactive ash basin (U5 basin), and active ash basin (AAB). CCR deposition
also historically occurred at CSS within an ash storage area. CSS began operation in July
1940 with Units 1, 2, 3, and 4 (Figure 1-2). Unit 5 began operations in 1972. Unit 6, a
clean -coal unit, began operations in 2012. Units 1 through 4 were retired from service in
October 2011, and Units 5 and 6 continue to operate at the Site.
CCR materials, composed primarily of fly ash and bottom ash, were initially deposited
in the Site's ash basins by hydraulic sluicing operations. Hydraulic deposition of CCR
historically occurred in three ash basins at the Site. CCR was also historically deposited
in the ash storage area located immediately north of the AAB during the 1970s. Units 5
and 6 currently operate with dry bottom ash and dry fly ash handling.
The U14 basin is located along the Broad River east of the coal pile and northeast of the
gypsum stack -out area. The former basin is separated from the AAB by Suck Creek. The
U14 basin was constructed in 1957 and began operations the same year. The U14 basin
was retired in 1977 once it reached capacity. However, stormwater ponds were
constructed on top of the retired basin and continued to operate until the basin was
excavated. Excavation of CCR historically deposited in the former basin was completed
in 2017. A lined retention basin (LRB) and wastewater treatment plant were constructed
in the footprint of the U1-4 basin and began operations on April 1, 2019.
The U5 basin is located in the western portion of the Site, west of electric generating
Units 5 and 6. The inactive basin was constructed in 1970 (in advance of Unit 5
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2018 CAMA Annual Interim Monitoring Report April 30, 2019
Duke Energy Carolinas, LLC - Rogers Energy Complex — Cliffside Steam Station SynTerra
operations) and received sluiced ash from Unit 5 starting in 1972 until it was retired in
1980 when it reached capacity. It is currently covered with topsoil and vegetation. A
portion of the footprint is used as a laydown yard. The basin currently receives
stormwater from a localized drainage area. Free water remains in small areas of the
inactive basin footprint to the southeast and northwest.
The AAB is located in the eastern portion of the Site, east of electric generating Units 5
and 6. The AAB operates under National Pollutant Discharge Elimination
System(NPDES) Permit NC0005088 issued by NCDEQ. Construction of the AAB
occurred in 1975, and it began receiving sluiced ash from Unit 5. The basin historically
received inflows to its western portion, including fly ash and bottom ash. Generating
Units 5 and 6 have converted to dry fly ash and dry bottom ash handling systems, and
the AAB no longer receives those inflows. Duke Energy ceased all inflows to the AAB
and began decanting of ash basin water on March 31, 2019.
An unlined dry ash storage area is also located immediately adjacent to the north of the
AAB. This ash storage area was created when ash was removed from the AAB in the
1970s to provide additional capacity. A spoil area, that was previously thought to also
be an ash storage area, is located to the east of the ash storage area and may contain soil
from the AAB embankment dam construction. The ash storage area is planned to be
excavated as part of the AAB closure.
The U14 basin includes one embankment structure functioning as a dam - Main Dam.
The U1-4 basin Main Dam was modified by removing the top portion of the dam crest
as part of LRB construction but it remains a regulated dam. The U5 basin includes two
embankment structures functioning as dams - the Main Dam to the north and the
Saddle Dam to the northeast. The AAB includes two embankment structures
functioning as dams - the Upstream Dam to the west near Suck Creek and the
Downstream Dam to the northeast near the Broad River. These dams are regulated by
NCDEQ.
The Cliffside ash basins met the requirements for "low -risk" classifications in
accordance with NC House Bill 630. Under CAMA, a low -risk CCR surface
impoundment may, at the election of NCDEQ, be closed by excavation, closure in place,
or a hybrid approach by December 31, 2029.
Unit 6 was equipped with dry fly ash (DFA) and dry bottom ash (DBA) handling since
initial operations began in 2012. Unit 5 converted to DFA in fall 2017 and DBA handling
in spring 2018. Dry ash generated from Units 5 and 6 are currently disposed of in the
on -Site Coal Combustion Products (CCP) Landfill located in the southwestern portion
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2018 CAMA Annual Interim Monitoring Report April 30, 2019
Duke Energy Carolinas, LLC - Rogers Energy Complex - Cliffside Steam Station SynTerra
of the Site. The CCP Landfill is permitted by the NCDEQ Division of Waste
Management (DWM) under Permit 8106-INDUS-2009. After dry ash handling
commenced at CSS, ash was sent only on occasion to the AAB upon system start-up.
Duke Energy has since ceased all inflows to the basin as of March 31, 2019.
1.3 Changing Site Conditions
Several changes to Site operations and conditions occurred in 2018 or are scheduled to
occur in 2019 which are relevant to Site groundwater evaluations.
CCR from the U1-4 basin was excavated in 2017. A LRB and wastewater treatment plant
were constructed in the former basin footprint and began initial operations in April
2019. Short-term changes to groundwater flow and constituent transport are expected to
be minimal due to the proximity of the former basin to the Broad River. Constituent
concentrations in groundwater are expected to decrease over time with the removal of
the CCR source material.
Sluicing of fly ash to the AAB ceased in the fall of 2017 when Unit 5 was converted to
dry fly ash handling. Sluicing of bottom ash to the AAB ceased in the spring of 2018
when Unit 5 was converted to dry bottom ash handling. Decanting of the AAB began
on March 31, 2019. Transducers are in place in the water in the AAB and in wells in and
around the AAB to record changes in water levels. These actions to convert to dry ash
handling and decanting are expected to have a significant effect on conditions in the
vicinity of the AAB. Without the hydraulic head in the AAB following decanting, it is
expected that the mounding effect of ash pore water currently observed in the AAB will
cease and the vertical gradients near the dam will decrease. Without continued mass
loading in the AAB, it is expected that groundwater constituent concentrations will
decrease over time.
1.4 Regional Hydrogeology
The Site is located in the Piedmont Physiographic Province. A conceptual model of
groundwater flow in the Piedmont, which is applicable to CSS, was developed by
LeGrand (1988, 1989) and Harried and Daniel (1992). The model describes a slope -
aquifer system with a regolith and bedrock drainage basin within a perennial stream
valley system (LeGrand, 2004). Groundwater is recharged by drainage in the highlands
followed by discharge to a perennial stream. Flow in the regolith follows porous media
principals, while flow in bedrock is provided by the presence of secondary porosity
features (fractures). Rarely does groundwater move beneath a perennial stream to
another more distant stream or across drainage divides (LeGrand, 1989).
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1.5 Site Hydrogeology
Based on the Site investigation, the groundwater system in natural materials (soil,
soil/saprolite, and bedrock) at the CSS site is consistent with the regolith-fractured rock
system and is an unconfined, connected groundwater system. The groundwater system
at the CSS site is divided into three flow zones referred to in this report as:
• Shallow/Surficial Zone (S) - Composed of regolith (including residual soils, fill
and reworked soils, alluvium, and saprolite).
• Deep/Transition Zone (D) - A relatively transmissive zone comprised mostly of
partially weathered rock that is gradational between saprolite and competent
bedrock.
• Bedrock Zone (BR) - Fractured competent bedrock. As described in the 2018
Comprehensive Site Assessment (CSA) update, groundwater flow in bedrock
fractures is anisotropic and difficult to predict; velocities change as groundwater
moves between fractures of varying orientations, gradients, and size (SynTerra,
2018).
Ash pore water is wastewater in contact with ash within the ash basins and ash storage
area. Wells installed within the ash use the letters "S" or "SL" in the well ID
nomenclature. Wells designated "SL" were typically installed at the base of the ash, and
deeper than an adjacent well within ash.
The Broad River (to the north) and Suck Creek (between the steam plant and the AAB)
are the primary surface water bodies in the area of CSS. A hydraulic head at the AAB
caused by basin operations also influences local groundwater flow. The predominant
direction of groundwater flow is to the north toward the Broad River, with a
component of flow in the central portion of the Site toward Suck Creek.
The ash basins are flow -through basins with groundwater discharging upward into the
former perennial stream valleys. Hydraulic gradients are predominantly flat or near
horizontal across the central portions of the basins and beneath the basins. Hydraulic
gradients are downward in the upstream vicinity of the dams (AAB Upstream and
Downstream Dams, U1-4 basin Main Dam [based upon pre -excavation water levels
prior to 2018], and U5 basin Main and Saddle Dams). Beyond or downstream of the
dams, groundwater discharges to receiving water bodies (the Broad River and Suck
Creek). This flow system, along with the stratified nature of the fly ash and bottom ash
in the basins and the clay -rich matrix of the underlying material (soil and saprolite),
results in limited downward vertical migration of COIs into the underlying
groundwater upstream from the dams. These findings are supported by AAB pumping
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tests conducted in 2018 (SynTerra, 2019). In the vicinity of the dams, water flows
downward from the basins and under the dams. Beyond the dams, groundwater flows
upward toward surface water discharge zones, limiting downward migration of COIs
to the downstream area in close proximity to the dams.
The following presents a generalized conceptual site model (CSM) for Cliffside ash
basins, which were constructed within former perennial stream valleys in the Piedmont
of North Carolina:
• Generally, the physical setting for ash basins within perennial stream valleys
limits the horizontal and vertical migration of constituents to areas near and
directly downgradient of the basin dams and dikes.
• The groundwater flow paths (the area of potential constituent migration in
groundwater from the basins) remain in the basin's stream valley system.
• Topographic ridges located in areas upgradient and side -gradient of the basins
reflect groundwater divides.
• Streams, rivers and lakes downgradient from the dams are groundwater
discharge zones that limit the horizontal migration of constituents downgradient
of the basins.
• The migration of ash pore water to the underlying groundwater near the dams is
the primary mechanism for constituent transport.
• Boron is the CCR constituent most indicative of groundwater migration from a
source area with a discernable plume pattern. Other less mobile metals such as
arsenic, chromium, cobalt, and selenium, (if detected in groundwater), may be
present within the area of the boron plume but to a lesser extent.
• Due to the limited presence of most metals in groundwater, the groundwater
migration to downgradient surface water bodies has not caused surface water
quality standards to be exceeded.
Exceptions to the typical groundwater flow pathway constrained by the basin
hydrogeology, as described above, occur:
• In areas where additional source areas, (ie. landfills and ash storage areas),
contribute to the groundwater system as is the case with the CSS ash storage
area.
• In areas where thin to non-existent layers of saprolite or alluvium exist beneath
ash pore water.
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Wells have been installed to monitor ash pore water and shallow, deep, and bedrock
groundwater flow zones as part of ongoing assessment and monitoring activities.
Figure 1-2 illustrates the locations of the CAMA monitoring well network with respect
to the AAB, U1-4 basin, U5 basin, and ash storage area. Other pertinent Site
infrastructure is also shown on the figure. Table 1-1 is a well construction table of
CAMA monitoring wells included in 2018 versions of the IMP plus additional wells
installed in 2018 and added to the 2019 IMP.
1.6 Previous Reporting
Detailed descriptions of the Site operational history, the Site conceptual model, physical
setting and features, geology/hydrogeology, and results of the findings of the CSA and
other CAMA-related work are documented in the following:
• Comprehensive Site Assessment Report - Cliffside Steam Station Ash Basin (HDR,
2015a).
• Corrective Action Plan Part 1 - Cliffside Steam Station Ash Basin (HDR, 2015b).
• Corrective Action Plan Part 2 (included CSA Supplement 1 as Appendix A) — Cliffside
Steam Station Ash Basin (HDR, 2016a).
• Comprehensive Site Assessment Supplement 2 — Cliffside Steam Station Ash Basin
(HDR, 2016b).
• Surface Water Evaluation to Assess 15A NCAC 02B Compliance for Implementation of
Corrective Action Under 15A NCAC 02L.0106 — Cliffside Steam Station (SynTerra,
2017)
• 2018 Comprehensive Site Assessment Update — Cliffside Steam Station Ash Basin
(SynTerra, 2018).
• Ash Basin Pumping Test Report for Cliffside Steam Station (SynTerra, 2019).
NCDEQ provided partial approval of background threshold values in a letter to Duke
Energy dated May 14, 2018 (Appendix A). Comparisons of data to BTVs in this report
are in reference to those approved values. BTVs will be further refined and updated in
2019.
In a letter dated June 29, 2018, NCDEQ indicated that assessment activities have been
sufficient to proceed with preparing a corrective action plan (CAP), but requested
additional investigation be conducted in conjunction with CAP preparation. Additional
assessment activities associated with additional investigation activities conducted in
2018 are described herein.
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This report provides an evaluation of the groundwater data collected during the 2018
calendar year. The following sections will present the 2018 CAMA monitoring data and
provide an integrated interpretation of Site conditions and plume status.
1.7 Overview of Findings for 2018
Key findings of the quarterly CAMA data for 2018 include:
• The AAB, ash storage area, U14 basin, and U5 basin are considered the
primary sources of CCR-related constituents in groundwater at the Site.
• The current distribution of COIs at the CSS is contained within the Site with
the potential exception of a small parcel (approximately 0.5 acre) northeast of
the AAB.
• Sampling in the Broad River and Suck Creek indicate there are no surface
water (15A NCAC 2B) exceedances attributable to the ash basins.
• No imminent hazards to public health and safety have been identified.
• Groundwater flow direction at CSS is generally to the north based on the Site
stream valley orientation. This setting is consistent with the slope -aquifer
system model common to the Piedmont Physiographic Province (LeGrand,
2004). Importantly, Site groundwater flows away from potential water supply
well receptors located upgradient and side -gradient of CSS.
• The CSS ash basins are horizontal water flow -through systems with upward
hydraulic gradients into the former stream valleys at upgradient ends of the
basins. Hydraulic gradients are predominantly horizontal across most of the
basin. Hydraulic gradients are downward proximate to the basin dams due to
the hydraulic head in the basins near the dams. Upward vertical gradients
occur downstream of the dams in the vicinity of receiving water bodies
(groundwater discharge areas). This horizontal water flow -through system
limits downward vertical migration of COIs into groundwater to the areas
proximate to the dams.
• Pumping tests conducted in 2018 within the AAB support that flow within
ash pore water is predominantly horizontal, with limited evidence of
downward vertical migration into groundwater within saprolite immediately
underlying ash in the AAB.
• Boron, strontium, sulfate, and manganese are key constituents in
groundwater associated with the ash basins and ash storage area. Other COIs
identified as being greater than the respective standards and background
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values in groundwater are encompassed by the distribution of those
constituents and/or have localized distributions on -Site.
COIs in groundwater at the CSS appear to be generally stable (not expanding)
based on 2018 data when compared to historical Site data. No significant
concentration or water level changes were observed in the 2018 dataset.
Exceptions include potential increasing boron concentrations:
o northeast of the AAB (at monitoring wells MW-20D and GWA-22S,
generally from 400-700 micrograms per liter [µg/L])
o boron and manganese concentrations in the vicinity of the ash storage
area (at monitoring wells AS-11); CLMW-3S; CLMW-3D; AS-71); and
AS-2S for boron, generally from 500-1,000 µg/L
o at monitoring wells CLMW-3S; AS-71); AS-2S; and AS-8S for
manganese, generally from 1,000-12,000 µg/L).
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2.0 2018 MONITORING ACTIVITIES
2.1 2018 Quarterly Sampling Schedule
The monitoring well network was sampled on a quarterly basis during 2018 in
accordance with the IMP outlined in the CSA update. The IMP was updated quarterly
by NCDEQ (Appendix A). New wells installed throughout the year were added to the
monitoring network and will be sampled quarterly until four consecutive sampling
events have occurred. After four events, the sampling frequency of these new wells will
then be further evaluated. The sampling events occurred in accordance with the IMP
schedule on the following dates:
• Quarter 1: January 26, 2018 - February 5, 2018
• Quarter 2: April 26, 2018 - May 7, 2018
• Quarter 3: July 31, 2018 - August 8, 2018
• Quarter 4: October 22 - November 2, 2018
Groundwater sampling was performed by technical personnel from Pace Analytical
subcontracted to Duke Energy. Comprehensive data submittals to NCDEQ occurred on
a monthly basis in 2018 until a quarterly submittal schedule was approved by NCDEQ
(June 6, 2018 email to Duke Energy), in accordance with the following schedule:
• Monthly: January through June 2018
• Quarter 3: September 2018
• Quarter 4: December 2018
In the first quarter of 2019, an optimized IMP was approved by NCDEQ for
implementation for monitoring within 2019. The optimized IMP is discussed in Section
5.1.
2.2 Changes to the CAMA Groundwater Monitoring Network
A total of 23 wells were installed at the Site in 2018. Two of these wells were installed as
CCR Rule characterization wells in the vicinity of the CCP Landfill. Twenty-one (21) of
these monitoring wells were installed in 2018 either as part of pump testing within the
AAB footprint, as CCR Rule characterization wells in the vicinity of the ash basins, or
for additional assessment monitoring.
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The desire for additional assessment on certain areas was identified as part of the 2018
CSA update. Wells were installed, or are planned, to support additional assessment in
the following areas:
• Installing additional wells for groundwater COI delineation associated with the
ash storage area, the AAB footprint near AB-3, the western portion of the AAB
near the Upstream Dam and Suck Creek, and the southern portion of the AAB
near CCR-16S/D and GWA-47D.
• Installing additional wells to evaluated groundwater in deep bedrock beneath
and downgradient of the ash basin dams.
• Pumping tests within the AAB were conducted to evaluate conditions within the
ash and saprolite immediately underlying the ash in the basin (SynTerra, 2019).
• The newly identified Unit 6 source area was identified as an additional potential
source area requiring assessment by NCDEQ as part of CAMA or separately.
The field investigations required to obtain the additional assessment information are
ongoing, with the exception of the AAB pumping tests. The pumping tests conducted in
2018 within the AAB support that flow within ash pore water is predominantly
horizontal, with limited evidence of downward vertical migration into groundwater
within saprolite immediately underlying ash in the AAB (SynTerra, 2019).
In summary, wells installed during 2018 include the following:
• AB-1BROR
Replacement well for monitoring well AB-1BROR
• AB-3-APW*
Pumping well for AAB pump tests screened within ash
• AB-3-LA15
Observation well for AAB pump tests
• AB-3-MA15
Observation well for AAB pump tests
• AB-3-MA30*
Observation well for AAB pump tests
• AB-3-SPW*
Pumping well for AAB pump tests screened within saprolite
underlying ash
• AB-3-UA15*
Observation well for AAB pump tests
• AB-4-APW*
Pumping well for AAB pump tests screened within ash
• AB-4-LA15
Observation well for AAB pump tests
• AB-4-UA15
Observation well for AAB pump tests
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• AS-7I
Intermediate well to characterize GW beneath ash in the ash
storage area
• CCR-8BR
CCR characterization/CAMA well at AAB
• CCR-12BR
CCR characterization/CAMA well at AAB
• CCR-17BR
CCR characterization/CAMA well at AAB
• CCR-IB-3BR
CCR characterization/CAMA well at U1-4 basin
• CCR-U5-4BR
CCR characterization/CAMA well at U5 basin
• GWA-34BR
CCR characterization/CAMA well northwest of U5 basin
• IB-6S
Shallow well for CAMA monitoring at U14 basin
• IB-6D
Deep well for CAMA monitoring at U1-4 basin
• I13-7S
Shallow well for CAMA monitoring at U14 basin
• IB-7D
Deep well for CAMA monitoring at U1-4 basin
* Well has been abandoned
Monitoring wells CCR-8BR, CCR-12BR, CCR-17BR, CCR-IB-3BR, CCR-U5-4BR, and
GWA-34BR are dual-purpose wells incorporated in both the IMP and CCR compliance
groundwater monitoring networks.
Boring logs and well construction documentation for wells installed in 2018 are
included in Appendix B. Well locations are shown on Figure 1-2.
In addition to the ash basins and ash storage area, four additional potential source areas
at CSS are not considered coincident with the ash basins. These additional potential
source areas include:
• Unit 6 Source Area
• Coal Pile
• Gypsum Stack -out Area
• Unit 5 Switchyard Area
Results from groundwater samples taken from newly installed Unit 6 source area wells
will be incorporated into the 2019 CAP update if the assessment determines the source
of COIs west of Suck Creek is migration from the AAB. If the assessment determines the
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source of COIs west of Suck Creek is a separate source area, the results will instead be
incorporated into a CSA report submitted in March 2020.
Assessment of the coal pile, gypsum stack -out area, and Unit 5 switchyard area are not
considered part of CAMA. These potential source areas are not discussed in this report
and will not be addressed in the 2019 CAP update.
2.3 Water Level Measurements
During each 2018 quarterly IMP sampling event, water levels were measured for the
CAMA monitoring well network. Water level maps of the monitored flow zones were
prepared based on the October 2018 sampling event as discussed in Section 3.1. This
information was used to determine the groundwater flow direction and rate. Water
levels were recorded during a 24- hour period (prior to well purging and sampling)
using an electric water level indicator and referenced to a surveyed top of casing mark
on the well.
CCR Rule compliance monitoring well water level data are generally not included in
data evaluations for 2018 because water levels from the wells were not collected during
the 24-hour period in which CAMA IMP water levels were collected. As of Quarter 1
2019, Duke Energy has implemented an optimized IMP that includes selected CCR
wells to provide better water level data coverage across the Site.
Groundwater elevations calculated from water levels measured during quarterly 2018
IMP sampling events are provided in Table 2-1. Groundwater flow direction and
velocity is discussed in Section 3.1. A copy of the water level measurements from the
CAMA monitoring well network is included in Appendix B.
2.4 Groundwater Sampling Methods
Field personnel conducted groundwater sampling following procedures outlined in the
NCDEQ approved Low Flow Sampling Plan, Duke Energy Facilities, Ash Basin Groundwater
Assessment Program, North Carolina, June 10, 2015 (Duke Energy, 2015). Groundwater
sampling using low flow methods helps to reduce agitation during sampling, resulting
in lower sample turbidity. A copy of the Low Flow Sampling Plan is included in
Appendix C.
Groundwater quality field parameters were measured and recorded during the
monitoring well purging process. The field parameters included the following: pH,
specific conductivity, temperature, dissolved oxygen, oxygen -reduction potential, and
turbidity.
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Upon collection of a groundwater sample, the chain of custody (COC) was updated and
kept with the respective samples. The sample bottles were packed on ice and chilled to
approximately 4 degrees Celsius (°C). The sample coolers and accompanying COCs
were shipped to the analytical laboratory by overnight express courier.
Copies of sampling logs and 24-hour water level data sheets are included in Appendix
B.
2.5 Laboratory Analyses
In 2018, NCDEQ provided Duke Energy with updated IMPs quarterly (Appendix A).
The groundwater samples were analyzed for the parameters listed in these quarterly
updates (Appendix A). North Carolina certified laboratories performed groundwater
quality analyses for the selected constituents.
2.6 Quality Control Summary (Data Validation)
Data review and validation is conducted for CAMA analytical results. Data review is a
systematic process for evaluation of data against a predefined set of criteria to provide
assurance that the data meet project analytical Data Quality Objective (DQO)
requirements. The purpose of the data review process is to evaluate whether the
usability of analytical data is affected by the overall analytical processes and sample
collection and handling procedures. If specific analytical DQOs are not met, the data
are qualified (i.e., data flags are assigned to sample results) in accordance with
guidelines established by the USEPA. Data review allows the data user to adequately
determine if the data can be used for its intended purpose. The data acceptance criteria
are established according to Standard Operating Procedures and Statements of Work
provided to the contracted analytical laboratory.
Upon receipt of the groundwater analytical data from the respective laboratories, the
data was uploaded into the project -specific database. SynTerra then performed
independent quality control checks of field and laboratory procedures that were used in
collecting and analyzing the data. Steps and guidelines followed during the data
validation process were modeled on the USEPA Contract Laboratory Program National
Functional Guidelines for Organic Superfund Methods Data Review (USEPA, January
2017a), USEPA Contract Laboratory Program National Functional Guidelines for
Inorganic Superfund Methods Data Review (USEPA, January 2017b), Multi -Agency
Radiological Laboratory Analytical Protocols Manual (MARLAP), Manual Volume I:
Chapter 8, Radiochemical Data Verification and Validation (MARLAP, July 2004), and
Data Validation Standard Operating Procedures for Contract Laboratory Program
Routine Analytical Services Inorganic Analysis (USEPA, September 2011). In addition,
method -specific criteria set forth in the compendium of analytical methods found in the
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Test Methods for Evaluation Solid Waste; Physical/Chemical Methods (SW-846),
Update VI (USEPA, November 2017 [Phase I] and July 2018 [Phase II]) were also
evaluated during the validation process. This data review process has been adapted to
meet the analytical DQO requirements for generation of definitive critical data.
Quality control checks verify that the data collected are of appropriate quality for the
intended data use and that the analytical DQOs were met. Thus, all data determined to
be useable should be considered compliant and adequate for its intended use of
monitoring water quality at the Site.
Data validation checklists that were completed for each laboratory package, by quarter,
are presented in Appendix D.
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3.0 2018 MONITORING RESULTS
3.1 Site -Wide Groundwater Occurrence and Flow
Monitoring well locations are shown on Figure 1-2. Water level elevations for the
CAMA IMP monitoring in 2018 are summarized on Table 2-1. The water table at the
Site is typically located within the shallow flow zone.
Water level maps for each groundwater flow zone at CSS were created using the most
recent fourth-quarter (October 2018) water elevations (Figures 3-1 through 3-6). Water
level maps were created for the eastern portion of CSS (Figures 3-1 through 3-3) and
western portion of CSS (Figures 3-4 through 3-6) due to the size of the Site. General
groundwater flow directions can be inferred from the water level contours. The
groundwater flow direction for each flow zone at the Site is generally from south to
north. For the AAB, groundwater flows north toward the Broad River with the
exception of its western portion where groundwater flows generally west or northwest
toward Suck Creek. For the U1-4 basin, groundwater flows northeast toward the
adjacent Broad River. For the U5 basin, groundwater flows north toward the Broad
River with the exception of its northeast portion where a component of groundwater
flows northeast before flowing north toward the Broad River.
Figures 3-7 through 3-11 show hydrographs for selected wells along primary flow
transects in the vicinity of the AAB, ash storage area, U14 basin, and U5 basin. The
wells selected for preparation of the hydrographs include locations upgradient of the
ash basins, within the ash basins (with the exception of the U1-4 basin where
monitoring within the U14 basin was limited due to excavation), within the ash basin
dams, and downgradient of the ash basins. No significant changes in water levels or
groundwater flow directions were noted in the fourth quarter 2018 groundwater
elevation data compared to previous measurements dating back to 2015. Exceptions
include upward groundwater elevation trends in monitoring wells AB-3BR (Figure 3-7),
fluctuating groundwater elevation trends in monitoring wells U5-4BR and U5-
4BRA(Figure 3-11), and downward groundwater elevation trends in monitoring well
AB-3BRUA (Figure 3-7). No significant facility operating conditions in these areas are
known that would contribute to these groundwater elevation changes. These wells are
screened in the deep or bedrock flow zones and are occasionally dry. The water level
fluctuations may result from varying recharge into these wells. Single water elevations
that are significantly lower or higher than historical water elevations from the same
well are potentially related to field measurement errors or isolated recharge variance.
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Figures 3-12 through 3-14 show plan view velocity vector maps for groundwater in the
deep flow zone (transition zone) and upper fractured bedrock throughout CSS. Figure
3-15 shows a cross-section velocity vector map oriented approximately south -to -north
through the eastern portion of the AAB and AAB Downstream Dam. These maps were
created from comprehensive Site data incorporated into the Site's flow and transport
model. Black arrows illustrate the direction and magnitude of groundwater flow at
thousands of individual modeled locations. Various colors illustrate relative flow
velocities in feet per day (ft/day): red, orange, and yellow areas demonstrating the
highest flow velocities (>0.1 ft/day); green areas demonstrating mid -range flow
velocities (0.01-0.1 ft/day); and blue areas demonstrating the lowest flow velocities
(<0.01 ft/day). These figures provide additional support in understanding groundwater
flow throughout CSS in three dimensions. Key conclusions from evaluation of these
figures include:
• Velocity vectors (Figures 3-12 through 3-14) generally align with groundwater
flow directions throughout the Site inferred from water level maps (Figures 3-1
through 3-6).
• Groundwater velocity is much greater in the transition zone (Figure 3-12) than in
upper fractured bedrock (Figure 3-14). The majority of velocities in the transition
zone are greater than 0.1 ft/day, whereas the majority of velocities in upper
fractured bedrock are less than 0.01 ft/day.
• Groundwater flow velocities are generally lower beneath the AAB than other
areas of the Site, indicating potential flow and transport from the AAB is limited
beneath the AAB.
• Groundwater flow velocities are generally greater beneath and immediately
downgradient of the AAB Downstream Dam and U5 basin Saddle Dam (Figure
3-13) than beneath the AAB and U5 basin, indicating the areas beneath the dams
act as preferential flow and transport pathways in upper fractured bedrock
downgradient of the basins.
• Groundwater flow velocities along the AAB cross-section (Figure 3-15) are lower
within and beneath the AAB and greatest beneath the AAB Downstream Dam.
These observations indicate groundwater flow and transport is limited within
and beneath the AAB, the Downstream Dam acts as a barrier to groundwater
flow and transport, and a preferential groundwater flow and transport pathway
exists beneath the Downstream Dam.
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• Groundwater flow velocities are generally higher near the Broad River and Suck
Creek than most areas of CSS (Figures 3-12 through 3-14), indicating the Broad
River and Suck Creek are significant groundwater discharge features at CSS.
• Velocity vector orientation is toward Suck Creek both from east to west (from the
AAB) and from west to east (from Unit 6) (Figures 3-12 through 3-14), indicating
groundwater flow and transport from the AAB does not extend west beyond
Suck Creek.
A bedrock (approximately 300-400 feet BGS) assessment - in the vicinity of the AAB
Upstream and Downstream Dams, U1-4 basin dam, and U5 basin Main Dam - is being
performed with the installation of additional monitoring wells. This assessment will
help refine understanding of groundwater flow conditions beneath CSS dams. Results
of the bedrock assessment will be included in the 2019 CAP.
3.1.1 Active Ash Basin
The AAB is divided into four source areas for purposes of evaluating
groundwater flow in this section. The division of the basin into these four areas is
based on source area to receptor flow pathways. The AAB source areas are
shown on Figure 1-2 and are defined as follows:
• East - east portion of the AAB, through the Downstream Dam, and north
to the Broad River
• North - north portion of the AAB, through the ash storage area, and north
to the Broad River
• West - northwest portion of the AAB, through the Upstream Dam, and
northwest to Suck Creek
• South - southwest portion of the AAB, west through a narrow ridgeline,
and west to Suck Creek
AAB East
Figure 3-16 presents general cross-section A -A', which includes a portion of AAB
East. This cross-section illustrates the hydrogeology in this area from the ash
basin free water near the Downstream Dam downgradient to the Broad River.
Water level contours and groundwater flow directions, based on October 2018
data, are illustrated on the figure. The calculated geomeans for boron
concentrations are posted at the respective well locations at the screened
intervals to provide a representation of boron distribution with depth. Detailed
observations concerning groundwater flow in the vicinity of AAB East include:
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• Groundwater flow direction in this area is north to the Broad River
(Figures 3-1 through 3-3).
Topography increases to the east of the AAB (Figure 1-1), creating a
groundwater divide that prevents constituent migration off -Site to the
east. Water levels (Figures 3-1 through 3-3), velocity vector maps (Figures
3-12 through 3-14), and lack of COIs (Table 3-3 and Figures 3-23 through
3-34) in monitoring well clusters MW-21, GWA-23, GWA-24, GWA-48,
and MW-22 (Figure 1-2) support that groundwater flow and constituent
migration from AAB East is not off -Site to the east in this area.
A topographical high exists in the vicinity of the spoil area, located east of
the ash storage area (Figure 1-1). Lack of COIs (Table 3-3 and Figures 3-23
through 3-34) in well clusters AS-3, AS-4, AS-5, AS-6, and GWA-28
(Figure 1-2) supports that groundwater flow and constituent migration
from AAB East does not extend northwest to the spoil area.
The AB-4 and AB-5 well clusters (Figure 1-2) include monitoring wells
screened within and beneath AAB pore water within AAB East. The
vertical gradient between the deep flow zone and ash pore water is
slightly upward to near flat (Table 3-2). Boron concentrations in ash pore
water wells were generally observed between 1,000-6,000 µg/L) during
2018 (Table 3-3). However, boron concentrations in the deep and bedrock
flow zones directly beneath the ash pore water were consistently less than
its BTV (<50 µg/L) during 2018 (Table 3-3). These water level and COI
concentration observations support the conclusion that significant
downward flow and migration of COIs is not occurring beneath the AAB
in this area.
• The AB-1 well cluster (Figure 1-2) was installed at the crest of the AAB
Downstream Dam. Boron concentrations are greatest in the deep flow
zone, lower in the bedrock flow zone, and non -detect in the shallow flow
zone at this well cluster. Groundwater elevations have historically been
higher in AB-1S than in AB-11) and AB-1BROR, indicating a steep
downward vertical gradient beneath the dam (Table 2-1, Table 3-2, and
Figure 3-8).
• These constituent and water level observations indicate that the AAB
Downstream Dam acts as a local groundwater flow and transport barrier.
This barrier causes COIs to migrate in groundwater beneath and around
the abutments of the Downstream Dam.
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AAB North
Figure 3-17 presents general cross-section J-J', which includes a portion of AAB
North. This cross-section illustrates the hydrogeology in this area from the
interface between the AAB and ash storage area, through the ash storage area,
and downgradient to the Broad River. Water level contours and groundwater
flow directions, based on October 2018 data, are illustrated on the figure. The
calculated geomeans for boron concentrations are posted at the respective well
locations at the screened intervals to provide a representation of boron
distribution with depth. Detailed observations concerning groundwater flow in
AAB North include:
• Groundwater flow direction in this area is north to the Broad River
(Figures 3-1 through 3-3).
A topographical high exists in the vicinity of the spoil area, located east of
the ash storage area (Figure 1-1). Lack of COIs (Table 3-3 and Figures 3-23
through 3-34) in monitoring well clusters AS-3, AS-4, AS-5, and AS-6
(Figure 1-2) support that groundwater flow and constituent migration
from AAB North does not extend northeast to the spoil area.
The AB-3 well cluster (Figure 1-2) includes monitoring wells screened
within and beneath AAB pore water located within the source area in
AAB North. Based upon October 2018 water levels, the vertical gradient
between the shallow flow zone and ash pore water is slightly upward to
near flat (Table 3-2). Boron concentrations in ash pore water wells were
generally observed between 1,000-3,000 µg/L during 2018 (Table 3-3).
However, boron concentrations in the shallow, deep, and bedrock flow
zones directly beneath the ash pore water were consistently less than its
BTV (<50 µg/L) to 72.5 µg/L during 2018 (Table 3-3). These water level
and COI concentration observations support the conclusion that
significant downward migration of COIs is not occurring beneath the
AAB.
Very little saprolite or alluvium exist beneath ash in portions of the ash
storage area (Figure 3-17). This condition allows migration of COIs into
the underlying groundwater within and downgradient of the ash storage
area footprint, in contrast to the AAB footprint.
AAB West
Figure 3-18 presents general cross-section K-K', which includes a portion of AAB
West. This cross-section illustrates the hydrogeology in this area from the center
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of the AAB, through the Upstream Dam, and downgradient to Suck Creek.
Water level contours and groundwater flow directions, based on October 2018
data, are illustrated on the figure. The calculated geomeans for boron
concentrations are posted at the respective well locations at the screened
intervals to provide a representation of boron distribution with depth. Detailed
observations concerning groundwater flow in the vicinity of AAB West include:
• Groundwater flow direction in this area is northwest to Suck Creek
(Figures 3-1 through 3-3).
• Topographical highs exist to the southeast and northeast of the Upstream
Dam in this area (Figure 1-1). Groundwater was not encountered in the
saprolite in these areas during well drilling activities. Lack of COIs (Table
3-3 and Figures 3-23 through 3-34) in CCR-13D (Figure 1-2) supports that
groundwater flow and constituent migration from AAB West does not
extend appreciably to the southwest in this area. Presence of COIs (Table
3-3 and Figures 3-23 through 3-34) in CCR-8D and GWA-51D (Figure 1-2)
indicates that groundwater flow and constituent migration from AAB
West extends to some degree to the northwest in this area.
The AB-3 well cluster (Figure 1-2) includes monitoring wells screened
within and beneath AAB pore water located within AAB West. The
vertical gradient between the shallow flow zone and ash pore water is
slightly upward to near flat (Table 3-2). Boron concentrations in ash pore
water wells were generally observed between 1,000-3,000 µg/L during
2018 (Table 3-3). However, boron concentrations in the shallow, deep, and
bedrock flow zones directly beneath the ash pore water were consistently
less than its BTV (<50 µg/L) to 72.5 µg/L during 2018 (Table 3-3). These
water level and COI concentration observations support the conclusion
that significant downward migration of COIs is not occurring beneath the
center of the AAB.
• The AB-2 well cluster (Figure 1-2) was installed at the crest of the AAB
Upstream Dam. Boron concentrations are reported at greater
concentrations in the deep and bedrock flow zones than in the shallow
flow zone at this well cluster. Water levels have historically been greater
in AB-2S than in AB-21), indicating a steep vertical gradient beneath the
dam from the shallow flow zone downward to the deep flow zone (Table
2-1, Table 3-2, and Figure 3-8).
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• These constituent and water level observations indicate that the AAB
Upstream Dam acts as a local groundwater flow and transport barrier.
This barrier causes COIs to migrate in groundwater beneath and around
the abutments of the Upstream Dam.
AAB South
Figure 3-16 presents general cross-section A -A', which includes a portion of the
AAB South footprint. This cross-section illustrates the hydrogeology in
upgradient areas south of the AAB, the southern region of the AAB, and
locations downgradient to the northeast discussed in this section regarding AAB
East. Water level contours and groundwater flow directions, based on October
2018 data, are illustrated on the figure. The calculated geomeans for boron
concentrations are posted at the respective well locations at the screened
intervals to provide a representation of boron distribution with depth. An east -
to -west cross section figure has not been created that illustrates the AAB South
area. Detailed observations concerning groundwater flow in the vicinity of the
AAB South include:
• Groundwater flow direction in this area is north through and beneath the
AAB footprint with a component of flow west toward Suck Creek based
upon water level maps (Figures 3-1 through 3-3).
Topography increases to the east and south of AAB South, creating a
groundwater divide that prevents constituent migration off -Site to the east
and south (Figure 1-1). Water levels (Figures 3-1 through 3-3), velocity
vector maps (Figures 3-12 through 3-14), and lack of COIs (Table 3-3 and
Figures 3-23 through 3-34) in well clusters GWA-24, GWA-48, MW-22,
GWA-25, MW-24, and BG-1 (Figure 1-2) support that groundwater flow
and constituent migration from AAB South is not to the east or south in
this area.
A topographical high exists to the west of this area between AAB South
and Suck Creek (Figure 1-1). This ridgeline feature is less prominent in the
vicinity of GWA-26 and GWA-47 well clusters (Figure 1-2). Groundwater
was not encountered in the saprolite in most of this area (GWA-47, CCR-
15, and GWA-27 well clusters) during well drilling activities. Presence of
COIs (Table 3-3 and Figures 3-23 through 3-34) in deep and bedrock wells
throughout this area indicates that groundwater flow and constituent
migration from AAB South extends to some degree to the west in this area
toward Suck Creek.
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The AB-6 well cluster (Figure 1-2) includes monitoring wells screened
within and beneath AAB pore water located within AAB South. The
vertical gradient between the deep flow zone and ash pore water is
slightly upward (Table 3-2). Boron concentrations in ash pore water wells
were generally observed between 4,000-11,000 µg/L during 2018 (Table 3-
3). However, boron concentrations in deep and bedrock flow zone wells
directly beneath the ash pore water were consistently less than its BTV
(<50 µg/L) during 2018 (Table 3-3). These water level and COI
concentration observations support the conclusion that significant
downward migration of COIs in groundwater is not occurring beneath the
southern region of the AAB.
3.1.2 Former Units 1-4 Ash Basin
The former Units 1-4 ash basin (U1-4 basin) is considered a single source area for
purposes of evaluating groundwater flow, constituent occurrence, and plume
status in this report.
Figure 3-19 presents general cross-section H-H', which includes a portion of the
U1-4 basin. This cross-section illustrates the hydrogeology in this area from
upgradient areas, through the center of the U14 basin and dam, and
downgradient to the Broad River. Water level contours and groundwater flow
directions, based on October 2018 data, are illustrated on the figure. The
calculated geomeans for boron concentrations are posted at the respective well
locations at the screened intervals to provide a representation of boron
distribution with depth. Detailed observations concerning groundwater flow in
the vicinity of U14 basin include:
• Groundwater flow direction in this area is northeast to the Broad River
(Figures 3-1 through 3-3).
• Topography increases to the east of the U14 basin in vicinity of GWA-
12S/BRU, creating a groundwater divide that prevents constituent
migration from the U1-4 basin east to Suck Creek (Figure 1-1). Water
levels (Figures 3-1 through 3-3), velocity vector maps (Figures 3-12
through 3-14), and lack of COIs (Table 3-3 and Figures 3-23 through 3-34)
in monitoring well clusters GWA-12 and GWA-29 (Figure 1-2) support
that groundwater flow and constituent migration from U14 basin is not
east to Suck Creek in this area.
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The former electric generating Units 1-4 discharge canal is located north of
the northern corner of the U1-4 basin in vicinity of GWA-10S/D (Figure 1-
2). The discharge canal may act as a local groundwater discharge feature.
Historical boron concentrations (June 2015 to April 2016, reference
comprehensive data submittals to NCDEQ) in abandoned ash pore water
wells IB-1S, IB-2S-SL, and IB-4S-SL located upgradient of the U1-4 basin
dam (Figure 1-2) were observed between 165-390 µg/L. However, boron
concentrations in abandoned deep flow zone wells IB-1D, IB-2BRU, and
IB-4D were consistently less than its BTV (<50 µg/L) to 57 µg/L during that
same timeframe. These water level and COI concentration observations
support the conclusion that significant downward migration of COIs is
not occurring beneath the U14 basin.
• Abandoned monitoring wells IB-3S/D (Figure 1-2) were installed at the
crest of the U1-4 basin dam. Historic boron concentrations (June 2015 to
February 2017, reference comprehensive data submittals to NCDEQ) were
greater in IB-3S than in IB-3D and appeared to be increasing in IB-3S prior
to abandonment. Whereas boron concentrations beneath the crest of the
AAB Upstream and Downstream Dams are greater in the deep than the
shallow flow zone, boron concentrations beneath and downgradient of the
U1-4 basin Main Dam crest are generally greater in the shallow than the
deep flow zone. This situation is likely influenced by the alluvial deposit
layer located beneath the U1-4 basin dam and along the Broad River
shoreline (depicted on Figure 3-19). This alluvial layer is comprised of
coarser material than native soil or dam fill materials and acts as a
preferential horizontal groundwater flow zone in areas where it exists.
Groundwater elevations were historically higher in IB-3S than in IB-3D,
indicating a steep downward vertical gradient beneath the dam (Figure 3-
10).
These groundwater level observations indicate that the U1-4 basin Main
Dam acts as a local groundwater flow and transport barrier. This barrier
causes COIs to migrate in groundwater beneath the U1-4 basin dam into
underlying alluvium, soil, and transition zone material.
3.1.3 Unit 5 Inactive Ash Basin
The Unit 5 inactive ash basin (U5 basin) is divided into two source areas for
purposes of evaluating groundwater flow in this section. This division into two
areas is based on source area to receptor flow pathways. The U5 basin source
areas are defined as follows:
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• East - east/northeast portion of the U5 basin, through the Saddle Dam,
and north toward Unit 5 and the Broad River
• West - central portion of the U5 basin, through the Main Dam, and north
to the Broad River
U5 basin East
Figure 3-20 presents general cross-section L-L', which includes a portion of the
U5 basin East area. This cross-section illustrates the hydrogeology in this area
from upgradient portions of the basin, through the east portion of the U5 basin,
through an area where the U5 basin Saddle Dam and U5 basin Main Dam
intersect, and downgradient to the Broad River. Water level contours and
groundwater flow directions, based on October 2018 data, are illustrated on the
figure. The calculated geomeans for boron concentrations are posted at the
respective well locations at the screened intervals to provide a representation of
boron distribution with depth.
Figure 3-21 presents general cross-section D-D', which also includes a portion of
the U5 basin East area. This cross-section illustrates the hydrogeology in this area
from areas of U5 basin West, northeast through the north portion of U5 basin
East, the U5 basin Saddle Dam, and downgradient to CSS electric generating
Unit 5. Water level contours and groundwater flow directions, based on October
2018 data, are illustrated on the figure. The calculated geomeans for boron
concentrations are posted at the respective well locations at the screened
intervals to provide a representation of boron distribution with depth.
Detailed observations concerning groundwater flow in the vicinity of U5 basin
East include:
• Groundwater flow direction in this area is generally north and northeast
to the Broad River (Figures 3-4 through 3-6).
• A natural ridgeline exists northwest and southwest of the U5 basin Saddle
Dam and forms the separation between U5 basin East and U5 basin West
(Figure 1-1). Groundwater from U5 basin East flows north to the Broad
River through the Saddle Dam and CSS electric generating Unit 5 area.
Topographic highs to the east and west of U5 basin East generally prevent
constituent migration from the U5 basin east to Unit 6 or west to the Unit
5 basin West area (Figure 1-1).
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• Historical boron concentrations (June 2015 to June 2016, reference
comprehensive data submittals to NCDEQ) in abandoned ash pore water
well U5-7SL located in the north portion of U5 basin East (Figure 1-2)
were observed between 180-190 µg/L. Boron concentrations in abandoned
deep flow zone well U5-7D were observed between 103-160 µg/L during
that same timeframe. Historical sulfate concentrations from this same
timeframe were 258-308 milligrams per liter (mg/L) in U5-7SL and 217-243
mg/L in U5-7D. Similar concentrations between ash pore water and the
underlying deep flow zone is likely due to only a thin layer of saprolite
between the bottom of ash and the transition zone beneath this portion of
the U5 basin (depicted on Figure 3-20). This condition allows downward
vertical migration of COIs into the underlying transition zone material
within and downgradient of the U5 basin East footprint, in contrast to the
AAB and U14 basin footprints.
• Transition zone material was encountered in nearly every well cluster
installed within U5 basin East. The nearly continuous transition zone
throughout this area is a primary mechanism for lateral groundwater flow
and transport beneath and downgradient of the U5 basin.
• Monitoring wells U5-6S/D (Figure 1-2) were installed at the crest of the U5
basin Saddle Dam. The most recent boron data available for U5-6S are
from September 2015 (reference comprehensive data submittals to
NCDEQ). Boron concentrations were similar between the shallow flow
zone (190 µg/L) and the deep flow zone (220 µg/L). Water levels have
historically been similar between U5-6S and U5-6D, indicating a nearly
flat (horizontal) gradient beneath the dam between the shallow and deep
flow zones (Table 2-1 and Table 3-2).
• The GWA-4, GWA-36, and GWA-37 well clusters are located
downgradient of the U5 basin Saddle Dam between the inactive basin and
the Broad River (Figure 1-2). Vertical gradients in this area vary, with
downward gradients in vicinity of the Saddle Dam (GWA-4 well cluster)
and upward gradients farther downgradient toward the Broad River
(GWA-36 and GWA-37 well clusters) (Table 3-2).
U5 basin West
Figure 3-22 presents general cross-section E-E', which includes a portion of the
U5 basin West area. This cross-section illustrates the hydrogeology in this area
from upgradient portions of the basin, through the west portion of the U5 basin,
through the Main Dam, and downgradient to the Broad River. Water level
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contours and groundwater flow directions, based on October 2018 data, are
illustrated on the figure. The calculated geomeans for boron concentrations are
posted at the respective well locations at the screened intervals to provide a
representation of boron distribution with depth. Detailed observations
concerning groundwater flow in the vicinity of U5 basin West include:
• Groundwater flow direction in this area is north to the Broad River
(Figures 3-4 through 3-6).
• A natural ridgeline exists northeast of the U5 basin Main Dam and forms
the separation between U5 basin West and U5 basin East (Figure 1-1).
Groundwater from U5 basin West flows north to the Broad River through
the Main Dam area.
• Topographic highs to the west and east of U5 basin West prevent
constituent migration from the U5 basin west toward the property line or
east to the U5 basin East area (Figure 1-1). Water levels (Figures 3-4
through 3-6) and lack of COIs (Figures 3-23 through 3-34) in monitoring
well clusters GWA-1, MW-34, and GWA-34 (Figure 1-2) support that
groundwater flow and constituent migration from U5 basin West is not
off -Site to the west in this area.
• Historical boron concentrations (since April 2016, reference
comprehensive data submittals to NCDEQ) in ash pore water well U5-2S-
SLA located in the central portion of U5 basin West (Figure 1-2) were
observed between 319-470 µg/L. Boron concentrations in deep flow zone
well U5-2D were observed between 109-286 µg/L during that same
timeframe. Historic sulfate concentrations from this same timeframe were
128-146 mg/L in U5-2S-SLA and 72.6-125 mg/L in U5-2D. The only slightly
greater boron and sulfate concentrations in the ash pore water compared
to the underlying deep flow zone is likely due to a thin layer of saprolite
existing between the bottom of ash and the transition zone beneath this
portion of the U5 basin (depicted on Figure 3-22). This condition allows
downward vertical migration of COIs into the underlying transition zone
material within and downgradient of the U5 basin West footprint, in
contrast to the AAB and U1-4 basin footprints.
• Transition zone material was encountered in nearly every well cluster
installed within U5 basin West. The nearly continuous transition zone
throughout this area is a primary mechanism for lateral groundwater flow
and transport beneath and downgradient of the U5 basin.
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Monitoring well cluster U5-4 was installed in the center portion of the U5
basin Main Dam crest in this area (Figure 1-2 and Figure 3-22). Boron and
sulfate concentrations were much lower than 02L standards in this area of
the U5 basin. Boron concentrations in 2018 at this cluster were between 53-
151 µg/L in the shallow flow zone and less than BTVs (50 µg/L) in the
deep and bedrock flow zones. Sulfate concentrations in 2018 were greater
in the deep and bedrock flow zone (38-64 mg/L) than in the shallow flow
zone (11-23 mg/L). December 2018 water levels are similar between the
shallow and deep flow zones but much higher than in the bedrock flow
zone, indicating a steep downward gradient beneath the dam between the
shallow/deep and bedrock flow zones (Figure 3-11, Table 2-1 and Table 3-
2). However, historical water levels have fluctuated significantly in U5-41),
U54BR, and U54BRA (Figure 3-11).
Monitoring well cluster U5-5 was installed in the eastern portion of the U5
basin Main Dam crest in this area (Figure 1-2). Boron concentrations in
2018 at this cluster were similar between the bedrock flow zone (351-490
µg/L) and the deep flow zone (213-454 µg/L). Sulfate concentrations in
2018 were greater in the bedrock flow zone (507-639 mg/L) than in the
deep flow zone (170-277 mg/L). Water levels have historically been higher
in U5-51) than in U5-5BR, indicating a steep downward gradient beneath
the dam between the bedrock and deep flow zones (Table 2-1 and Table
3-2).
• These constituent and water level observations indicate that the U5 basin
Main Dam acts as a local groundwater flow and transport barrier. This
barrier causes COIs in groundwater to migrate beneath the U5 basin Main
Dam into the underlying deep and bedrock flow zones.
• The GWA-2 and GWA-35 well clusters are located downgradient of the
U5 basin Main Dam between the inactive basin and the Broad River
(Figure 1-2). Vertical gradients in this area are generally downward
between the shallow and deep flow zones and nearly flat between the
deep and bedrock flow zones (Table 3-2).
3.1.4 Horizontal Gradients
Horizontal hydraulic gradients (i) were derived for the shallow, deep, and
bedrock flow zones throughout the Site using October 2018 water level
measurements. These gradients were derived by calculating the difference in
hydraulic head over the length of a flow path between two water level contour
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intervals within the same flow zone (Table 3-1). The following equation was
used to calculate horizontal hydraulic gradients:
i=dh/dl
Where i is the hydraulic gradient; dh is the difference between two hydraulic
heads (measured in feet); and dl is the flow path length between the two water
level contours within the same flow zone (measured in feet).
Applying this equation along generalized groundwater flow paths observed at
the Site, using groundwater elevation contours from Figures 3-1 through 3-6,
yields calculated horizontal hydraulic gradients (measured in feet/foot [ft/ft]).
These calculated values are presented in Table 3-1. These calculated horizontal
hydraulic gradients generally align with groundwater flow velocity magnitudes
presented on velocity vector maps (Figures 3-12 through 3-15). The velocity
vector maps provide refined evaluations of horizontal flow through modeled
outputs.
Along a flow pathway in AAB East, the calculated horizontal hydraulic gradient
was:
• 0.03 ft/ft in the shallow flow zone
• 0.03 ft/ft in the deep flow zone
• 0.03 ft/ft in the bedrock flow zone
Along a flow pathway in AAB North, the calculated horizontal hydraulic
gradient was:
• 0.03 ft/ft in the shallow flow zone
• 0.03 ft/ft in the deep flow zone
• 0.03 ft/ft in the bedrock flow zone
Along a flow pathway in AAB West, the calculated horizontal hydraulic gradient
was:
• 0.02 ft/ft in the shallow flow zone
• 0.02 ft/ft in the deep flow zone
• 0.02 ft/ft in the bedrock flow zone
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Along a flow pathway in AAB South, the calculated horizontal hydraulic
gradient was:
• 0.01 ft/ft in the shallow flow zone
• Not calculated in the deep flow zone due to lack of deep flow zone wells
in this area
• 0.01 ft/ft in the bedrock flow zone
Along a flow pathway in the vicinity of the U1-4 basin, the calculated horizontal
hydraulic gradient was:
• 0.04 ft/ft in the shallow flow zone
• 0.04 ft/ft in the deep flow zone
• 0.03 ft/ft in the bedrock flow zone
Along a flow pathway in U5 basin East, the calculated horizontal hydraulic
gradient was:
• 0.03 ft/ft in the shallow flow zone
• 0.06 ft/ft in the deep flow zone
• 0.03 ft/ft in the bedrock flow zone
Along a flow pathway in U5 basin West, the calculated horizontal hydraulic
gradient was:
• 0.06 ft/ft in the shallow flow zone
• 0.04 ft/ft in the deep flow zone
• 0.06 ft/ft in the bedrock flow zone
3.1.5 Vertical Gradients
Vertical hydraulic gradients (dhldl) are calculated from water level and well
screen midpoint elevations data from clustered wells. Groundwater elevations
from the fourth quarter 2018 were used in this evaluation (Table 3-2). Overall,
the vertical gradient magnitude and directions observed at the Site are similar in
magnitude and direction to the vertical gradients presented in the 2018 CSA
report (SynTerra, 2018).
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An upward vertical gradient beneath basins constructed within former stream
valleys has historically been observed in the Piedmont region of the Carolinas.
This upward gradient generally acts to prevent downward vertical migration of
COIs beneath the basins. In the vicinity of ash basin dams or dikes (where native
soil was placed, compacted, and engineered to create a low permeability
impounding feature to retain basin contents), vertical gradients from ash pore
water to groundwater in the underlying subsurface are typically strongly
downward. CSS hydrographs (Figures 3-7 through 3-11), the AAB cross-section
velocity vector map (Figure 3-15), and the vertical gradients table (Table 3-2)
support these general observations at CSS.
These vertical gradient trends are generally observed throughout the CSS Site
with the exception of the ash storage area and U5 basin, where layers of saprolite
underlying the ash are thin to nonexistent. These conditions allow downward
vertical migration of COIs into the underlying transition zone layer beneath the
ash storage area and U5 basin rather than only beneath and downgradient of
dam and dike features. Vertical gradients are consistently downward from ash
pore water to underlying deep and bedrock flow zones at ash storage area well
cluster AS-7 (Figure 3-7, Table 2-1, and Table 3-2). Vertical gradients are
consistently downward from ash pore water to underlying deep and bedrock
flow zones at U5 basin well cluster U5-2 (Figure 3-10, Table 2-1, and Table 3-2).
In the vicinity of the AAB and ash storage area:
• Upward vertical gradients were observed upgradient of the AAB and ash
storage area. Flow between the shallow and deep flow zones was near
equilibrium upgradient of these areas. Flow from the bedrock flow zone to
the transition flow zone has a slight upward vertical gradient.
• Upward vertical gradients were observed within the AAB from the
shallow flow zone to ash pore water, deep flow zone to ash pore water,
and within ash pore water. Downward vertical gradients were observed
between the shallow, deep, and bedrock flow zones. Vertical gradients
between ash pore water wells screened at different depths of ash pore
water (AB-3S compared to AB-3LA15 and AB-4S compared to AB-4LA15)
are essentially flat, suggesting that the flow within ash pore water is
lateral and nearly at equilibrium.
• Downward vertical gradients were observed in the vicinity of the AAB
Upstream and Downstream Dams between the shallow and deep flow
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zones and upward between the bedrock and deep flow zones. These
observations indicate that the flow is directed to the deep zone. The
downward gradients between the shallow and deep flow zones in the
vicinity of the dams are strong, suggesting the potential for downward
constituent migration from the AAB beneath the dams.
• The vertical gradients within, beneath, and downgradient of the ash
storage area are consistently downward between flow zones (Figures 3-7
and 3-8, Table 2-1, and Table 3-2). These observations suggest the
potential for downward constituent migration from the ash storage area
into underlying saprolite, transition zone, and bedrock.
In the vicinity of the former U1-4 basin:
Downward or essentially flat vertical gradients were observed upgradient
of the U14 basin.
Weak upward and downward vertical gradients between shallow and
deep flow zones were observed downgradient of the U1-4 basin,
suggesting flow is lateral and nearly at equilibrium.
In the vicinity of the U5 basin:
• Downward or essentially flat vertical gradients were observed upgradient
of the U5 basin.
Upward vertical gradients were observed within the U5 basin from deep
to shallow flow zones at U5-8S/D (located in an upgradient portion of the
U5 basin). Although water level was not measured in U5-2SL-SLA
(located in a downgradient portion of the U5 basin) during October 2018,
the vertical gradient is downward from shallow to deep flow zones at this
location based upon historical water levels (Table 2-1). Downward
vertical gradients were observed from deep to bedrock flow zones.
Beneath and downgradient of the U5 basin Main Dam, the vertical
gradient is downward or nearly flat.
• Beneath and downgradient of the U5 basin Saddle Dam, upward vertical
gradient exist between the deep and shallow flow zones with the
exception of one well pair located near the dam toe (GWA-4S and GWA-
4D).
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3.1.6 Groundwater Seepage Velocity
Groundwater seepage velocities were calculated using horizontal hydraulic
gradients from October 2018 data (Table 3-1). Hydraulic conductivity and
effective porosity values were taken from the November 2018 preliminary
updated flow and transport modeling report (Graziano, and others, 2018).
Calibrated conductivity and porosity values for each flow zone were used in an
effort to align velocity calculations with model predictions.
The flow and transport model provided hydraulic conductivity (k) values for the
shallow flow zone of 0.10 feet per day (ft/day), 0.10 ft/day for the deep flow zone,
and 0.10 ft/day for the bedrock flow zone. The flow and transport model
provided an effective porosity (n,) of 10 percent for the shallow flow zone, 10
percent for the deep flow zone, and 10 percent for the bedrock flow zone.
The horizontal groundwater seepage flow velocity (vs) can be estimated using a
modified form of the Darcy Equation (Table 3-1).
k dh
79S = (
ne d l
Applying this equation along generalized groundwater flow paths observed at
the Site, using generalized elevation contours from Figures 3-1 through 3-6,
yields calculated horizontal groundwater flow velocities (measured in feet/day
[ft/day] or feet/year [ft/yr]). These calculated values are presented in Table 3-1.
Along a flow pathway in AAB East, the calculated horizontal groundwater
seepage flow velocity was:
• 0.275 ft/day (100.53 ft/yr) in the shallow flow zone
• 0.259 ft/day (94.60 ft/yr) in the deep flow zone
• 0.269 ft/day (98.12 ft/yr) in the bedrock flow zone
Along a flow pathway in AAB North, the calculated horizontal groundwater
seepage flow velocity was:
• 0.294 ft/day (107.35 ft/yr) in the shallow flow zone
• 0.327 ft/day (119.47 ft/yr) in the deep flow zone
• 0.335 ft/day (122.38 ft/yr) in the bedrock flow zone
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Along a flow pathway in AAB West, the calculated horizontal groundwater
seepage flow velocity was:
• 0.156 ft/day (56.96 ft/yr) in the shallow flow zone
• 0.174 ft/day (63.50 ft/yr) in the deep flow zone
• 0.178 ft/day (64.88 ft/yr) in the bedrock flow zone
Along a flow pathway in AAB South, the calculated horizontal groundwater
seepage flow velocity was:
• 0.122 ft/day (44.44 ft/yr) in the shallow flow zone
• Not calculated in the deep flow zone due to lack of deep flow zone wells
in this area
• 0.136 ft/day (49.59 ft/yr) in the bedrock flow zone
Along a flow pathway in the vicinity of the U1-4 basin, the calculated horizontal
groundwater seepage flow velocity was:
• 0.427 ft/day (155.83 ft/yr) in the shallow flow zone
• 0.421 ft/day (153.79 ft/yr) in the deep flow zone
• 0.322 ft/day (117.42 ft/yr) in the bedrock flow zone
Along a flow pathway in U5 basin East, the calculated horizontal groundwater
seepage flow velocity was:
• 0.343 ft/day (125.21 ft/yr) in the shallow flow zone
• 0.609 ft/day (222.26 ft/yr) in the deep flow zone
• 0.322 ft/day (117.38 ft/yr) in the bedrock flow zone
Along a flow pathway in U5 basin West, the calculated horizontal groundwater
seepage flow velocity was:
• 0.620 ft/day (226.24 ft/yr) in the shallow flow zone
• 0.421 ft/day (153.65 ft/yr) in the deep flow zone
• 0.638 ft/day (232.78 ft/yr) in the bedrock flow zone
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3.2 Data Reduction and Evaluation
Groundwater samples from the CAMA monitoring well network were analyzed for the
constituents listed on the quarterly IMP approval letters (Appendix A). The analytical
results from each sampling event in 2018 are summarized on Table 3-3. Data qualifiers
and acronyms specific to the data table are summarized and defined on Table 3-4.
Laboratory analytical reports and accompanying data validation checklists are
presented in Appendix D.
This annual report presents and discusses the sampling results of 2018 CAMA
monitoring. The geomean of four quarters of data was calculated for each identified
COI to support the analysis of groundwater conditions and provide a basis for defining
the extent of the plume in 2018. The geomean was selected in order to capture the
central tendency of the data, which might vary over several orders of magnitude. If four
quarters of valid data were not available, the most recent valid sample result was
reported. Four quarters of valid data were not available either because the well was
recently installed or sample results from one quarter were excluded. Non -detect values
were assigned the lab reporting limit, and estimated (J-flag) values were treated as the
value reported.
Based on USEPA's National Functional Guidelines (USEPA, 2017a, 2017b), published
research upon the leaching behavior of elements of coal combustion fly ash (Izquierdo,
and others, 2012), and professional judgement, sample results were excluded from
geomean calculations for the following conditions:
• turbidity was greater than 10 Nephelometric Turbidity Units (NTUs)
• pH was greater than 10 standard units (S.U.) (for arsenic, chromium, and
vanadium only)
• if the data was flagged as unusable (RO qualified)
• if the data was non -detect at a reporting limit greater than the normal laboratory
reporting limit
Table 3-5 presents the calculated geomeans of the quarterly COI data. The grey
highlighting in the table illustrates which reported values are not calculated geomeans.
When geomeans could not be calculated, the most recent valid sample was evaluated to
determine whether the sample result is an appropriate representation of the historical
dataset. Sample results with COI concentrations significantly greater or lesser than the
historical average concentration were identified as outliers. After evaluating the data,
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no outliers were identified, and all data on Table 3-7 have been included for use in
evaluating plume geometry in the vicinity of the AAB, U1-4 basin, and U5 basin.
Geomeans are used to evaluate the occurrence of COIs at the Site. A single sample
result may not be an accurate representation of the concentrations observed over four
quarters of data in 2018. Evaluating plume geometries with geomeans limits the
occurrence of isolated COIs at concentrations greater than enforceable groundwater
standards.
Data from CCR Rule compliance monitoring wells are used for evaluating plume
geometry. The 2019 IMP was optimized in March 2019 to include additional CCR wells
to more efficiently define plume extents and identify plume geometry changes. Data
from CCR wells is used in this report on isoconcentration figures and time -series plots
for a complete evaluation of COI occurrence in the vicinity of the ash basins. These
figures are discussed in Sections 3.3, 3.4, and 3.5 of this report.
The BTVs, 02L standard, and/or IMAC for each COI are summarized by flow zone at
the top of Table 3-3. Text, figures, and tables in this report reflect the updated BTVs
approved by NCDEQ in 2018. Per 15A NCAC 02L .0202(b)(3), site -specific BTVs
calculated at concentrations greater than 02L standards or IMACs are the enforceable
groundwater standards.
Table 3-6 is a summary of an evaluation of COIs at the Site. The COI list from the 2018
CSA update was evaluated to determine which COIs effectively define the plume in the
vicinity of the Cliffside ash basin source areas. Table 3-6 provides the following
information:
• Applicable comparison criteria (02L standard, IMAC, or approved BTVs).
• Maximum 2018 geomean concentration near or outside compliance boundary.
• Exceedance ratio of the maximum geomean divided by the comparison criteria
value.
• The number of wells with concentrations greater than criterion near or outside of
the compliance boundary.
• Rationale for not including specific COIs in isoconcentration figures or time -
series plots.
At Cliffside, the locations of compliance comparison are the AAB compliance boundary,
the U1-4 basin waste boundary, and the U5 basin waste boundary. These boundaries
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are shown on Figure 1-2 and other report figures. Constituents that are detected near or
beyond these boundaries at exceedance ratios greater than one are appropriate for
defining plume geometry. A discernable plume cannot be defined for COIs that do not
exceed comparative criteria in all three flow zones. The COI evaluation in Table 3-6 is
divided into each of the source areas at CSS except AAB West. AAB West is not include
in Table 3-6 because the AAB compliance boundary is located west of Suck Creek,
which acts as a groundwater discharge feature (pending further assessment to verify
this condition).
For the purposes of illustrating Site -wide groundwater quality, boron, strontium,
sulfate, and manganese provide a good indication of the occurrence and distribution of
CCR-related COIs. As shown in Table 3-6, other COIs are also observed at
concentrations greater than their applicable comparison criteria. However, those COI
concentrations are encompassed within the plume collectively defined by boron,
strontium, sulfate, and manganese. In some cases, the concentrations are related to high
pH (grout -impacted well), naturally occurring concentrations, or other reasons
(reference Table 3-6 "Rationale" column). The COI evaluation summarized in Table 3-6
demonstrates that boron, strontium, sulfate, and manganese used in isoconcentration
maps and time -series plots adequately represents the groundwater plumes at CSS.
COIs are those parameters with concentrations greater than one or more of the
groundwater screening criteria (02L standard, IMAC, or approved BTV). COIs that
meet the following criteria may be designated for future corrective action:
1) Occur downgradient of the ash basin in the direction of groundwater flow;
2) Exhibit concentrations in groundwater at or beyond the compliance boundary
greater than the 02L standard, IMAC, or approved background values,
whichever is greater;
3) Exhibit high to variable mobility (exhibit a discernable plume); and
4) Demonstrate correlation with other soluble constituents associated with coal ash.
Based on the criteria above, the following groundwater COIs are anticipated to be
evaluated in the CAP Update:
Arsenic Iron Sulfate
Boron Manganese Thallium
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Chromium pH Total Dissolved Solids
Cobalt Strontium Vanadium
The groundwater COIs identified at CSS occur in CCR and are also naturally occurring
in groundwater. Certain COIs (e.g., cobalt, iron, and manganese) have background
concentrations in some flow zones at the Site greater than 02L standards or IMACs. The
2018 CSA update used Provisional BTVs (PBTVs) for comparison. NCDEQ approved all
BTVs for Cliffside with the exception of cobalt in the deep flow zone, iron in the shallow
and deep flow zones, and vanadium in the shallow flow zone in a letter to Duke Energy
dated October 11, 2017. The remaining BTVs were approved in a letter to Duke Energy
dated May 14, 2018. The BTVs for CSS are anticipated to be updated and included in the
2019 CAP update.
Table 3-7 provides a summary of BTVs calculated for Site COIs as defined in the 2018
CSA Update. The table includes previously approved BTVs and 2019 updated BTVs.
The BTVs have been updated in 2019 to include all background data collected at CSS
between June 2015 and December 2018. 2019 updated BTVs are anticipated to be
included in the 2019 CAP update and are included in Table 3-7 for comparison
purposes. BTVs are statistically derived upper tolerance limits (UTLs). The UTL
represents an upper limit of a range of values in which a specified proportion of the
data population resides with some level of statistical confidence. Concentrations
observed in upgradient and side -gradient wells at the Site may exceed BTVs but still be
within the range of typical background concentration in the North Carolina Piedmont
(and, therefore, represent background groundwater quality). Table 3-7 includes
constituent concentration ranges detected in background wells at Cliffside and regional
concentration ranges detected in background wells in the six Duke Energy facilities
located in the North Carolina Piedmont.
For the purposes of monitoring Site -wide groundwater quality at CSS, boron,
strontium, sulfate, and manganese are COIs that provide a good indication of the
occurrence and distribution of CCR-related COIs. Isoconcentration maps and time -
series plots for these COIs are the basis of plume geometry and concentration trend
evaluations for each source area in Sections 3.3, 3.4, and 3.5. As a result, several COIs
(boron, strontium, sulfate, and manganese) were selected for creating isoconcentration
maps because:
• These COIs are frequently reported at concentrations greater than 02L standards,
IMACs, or BTVs downgradient of the ash basins and ash storage area.
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• Boron, strontium, and sulfate are relatively mobile in groundwater as compared
with other COIs. Boron, strontium, and sulfate can, therefore, provide an
indication of the areal extent of CCR-related COIs in groundwater at the Site.
• Manganese can release from native soil due to certain geochemical reactions
downgradient of ash source areas. For CSS, manganese concentrations greater
than the Site -specific BTVs also provide good indication of CCR-related COIs in
groundwater.
Isoconcentration maps depicting the distributions of boron, strontium, sulfate, and
manganese in the shallow, deep, and bedrock flow zones across CSS are provided as
Figures 3-23 through 3-34 and discussed in Sections 3.3.2, 3.4.2, and 3.5.2. Time -series
plots presenting historical concentrations of boron, strontium, sulfate, and manganese
at select monitoring wells are provided as Figures 3-35 through 3-49 and discussed in
Sections 3.3.2, 3.4.2, and 3.5.2. Data for other COIs are not presented as isoconcentration
maps or time -series plots in this report because boron, strontium, sulfate, and
manganese best illustrate extent of constituent migration and constituent trends. Also,
the boundaries of other COI plumes are within the extent of boron, strontium, sulfate,
and manganese plume boundaries. However, data for all COIs are presented in Table
3-3 (2018 comprehensive data) and Table 3-7 (2018 geomean data) and discussed in the
following sections.
3.3 Active Ash Basin Water Quality
3.3.1 Site Conditions
The AAB is located east-southeast of CSS Units 5 and 6 and adjacent to the Broad
River (Figure 1-2).
Fly ash, bottom ash, and other wastewater streams historically entered into the
AAB in the northwest corner in vicinity of the Upstream Dam. AAB discharge
historically occurred through NDPES Outfall 002 located in the northeast corner
of the basin in vicinity of the Downstream Dam.
The northern portion of the AAB includes a soil -covered ash stack in the vicinity
of the AB-3 well cluster (Figure 1-1). Duke Energy relocated ash from the
southern portion of the AAB to this ash stack area during creation of the
southern settling cell in 2012.
Generating Units 5 and 6 have been converted to dry fly ash and dry bottom ash
handling systems. Sluicing of fly ash to the AAB ceased in fall 2017 when Unit 5
was converted to dry fly ash handling. Sluicing of bottom ash to the AAB ceased
in spring 2018 when Unit 5 was converted to dry bottom ash handling. All
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inflows to the basin were ceased and decanting of the AAB began on March 31,
2019. Water levels within the AAB are anticipated to decrease as Duke Energy
continues decanting as part of the ash basin closure process. The recent changes
will affect groundwater flow and transport conditions in the vicinity of the AAB.
No substantial changes have occurred to the ash storage area located north of the
AAB. The ash storage area is planned to be excavated as part of the AAB closure
activities.
3.3.2 Constituent Occurrence and Plume Status
In this section, the AAB is divided into four source areas for purposes of
evaluating constituent occurrence and plume status: AAB East, AAB North, AAB
West, and AAB South.
AAB East
AAB East is the farthest location from where ash and other wastewater sluicing
inflows historically entered into the basin. This portion of the basin is comprised
of ash overlain with free water and contains the former drainage pathway of
Suck Creek prior to its reroute. The Downstream Dam separates AAB East from
the Broad River to the north.
Figures 3-23, 3-24, and 3-25 are isoconcentration maps illustrating the occurrence
of boron in the shallow, deep, and bedrock flow zones throughout the Site.
Observations about boron distribution in the AAB East area include:
• The only occurrence of boron greater than the 02L standard of 700 µg/L in
this area is at MW-11S. This well is located along the eastern abutment of
the Downstream Dam near the dam's crest.
• Boron concentrations greater than the 02L standard remain within the
AAB compliance boundary and on Duke Energy property.
• Boron concentrations greater than BTVs (50 µg/L in the shallow, deep, and
bedrock flow zones) are observed in the vicinity of the Downstream Dam.
Figures 3-26, 3-27, and 3-28 are isoconcentration maps illustrating the occurrence
of strontium in the shallow, deep, and bedrock flow zones beneath the Site.
Observations about strontium distribution in the AAB East area include:
• Strontium does not have a 02L standard or IMAC, so the BTVs for each
flow layer are the appropriate concentrations for initial evaluation.
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Strontium BTV contours in this area closely follow the boron BTV
contours. Strontium concentrations greater than BTVs in this area are
primarily observed in the vicinity of the Downstream Dam and locations
downgradient toward the Broad River.
Strontium concentrations greater than BTVs are observed in monitoring
wells in the vicinity of the compliance boundary north of the Downstream
Dam (along the shore of the Broad River [in the vicinity of well cluster
GWA-21] and the Duke Energy property line [in the vicinity of well
clusters MW-20 and GWA-22]).
• Strontium concentrations greater than BTVs appear to be migrating to an
off -Site parcel located in the vicinity of the MW-20 and GWA-22 well
clusters.
Figures 3-29, 3-30, and 3-31 are isoconcentration maps illustrating the occurrence
of sulfate in the shallow, deep, and bedrock flow zones beneath the Site.
Observations about sulfate distribution in the AAB East area include:
• All sulfate concentrations in this area are less than the 02L standard of 250
mg/L.
Sulfate BTV contours closely follow the boron and strontium BTV
contours in this area of the Site.
• Sulfate concentrations in bedrock wells are less than the bedrock flow
zone BTV throughout this area.
Figures 3-32, 3-33, and 3-34 are isoconcentration maps illustrating the occurrence
of manganese in the shallow, deep, and bedrock flow zones beneath the Site.
Observations about manganese distribution in the AAB East area include:
Manganese BTVs are greater than the 02L standard of 50 µg/L in all three
flow layers, so the BTVs for each flow layer are the appropriate
concentrations for initial evaluation.
Manganese BTV contours closely follow the boron, strontium, and sulfate
BTV contours in this area of the Site.
• Manganese concentrations greater than BTVs in this area are primarily
observed in the vicinity of the Downstream Dam and locations
downgradient toward the Broad River.
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Manganese concentrations are less than BTVs in all three flow zones at the
GWA-22 well cluster, located in the vicinity of the Duke Energy property
line northeast of the Downstream Dam.
Manganese concentrations in the MW-20 well cluster are greater than
BTVs, indicating that manganese appears to be migrating to an off -Site
parcel located in that area.
At the AB-1 well cluster, manganese concentrations are reported at
concentrations greater than BTVs in all three flow zones and are greatest in AB-
1S. Manganese is influenced strongly by geochemical reactions, as opposed to
boron, strontium, and sulfate, which are influenced primarily by physical
conditions of the subsurface (e.g., advection, dispersion, dilution). The
susceptibility of manganese to geochemical reactions is the main reason for the
opposite observation of manganese concentrations within the Downstream Dam.
Comprehensive 2018 groundwater data for all constituents are provided in Table
3-3. Geomean calculations of all 2018 COI data are provided in Table 3-7. While
boron, strontium, sulfate, and manganese collectively provide a good
understanding of the nature and extent of the groundwater plume in AAB East,
other COIs are observed at concentrations greater than 02L standards, IMACs,
and/or BTVs within the plume area. Most notably, COI concentrations greater
than 02L standards, IMAC, and/or BTVs in well clusters GWA-21, MW-20, and
GWA-22 (downgradient of the Downstream Dam in closest vicinity to the AAB
compliance boundary) are important to consider:
• pH levels are within BTV ranges in these wells.
• TDS concentrations are less than the 02L standard in these wells.
• Cobalt concentrations are less than BTVs in these wells.
• While during 2018 there were observations of arsenic greater than the 02L
standard in GWA-21S; chromium greater than the 02L standard in GWA-
22S; and vanadium greater than the BTV in GWA-21S, these
concentrations do not appear to accurately represent groundwater
conditions. The arsenic and vanadium concentrations greater than 02L
standards and BTVs in GWA-21S are likely related to high pH levels in the
well. The chromium concentrations greater than the 02L standard in
GWA-22S are likely related to particulate influence in the unfiltered
sample (as suggested by lower concentrations of dissolved and hexavalent
chromium concentrations and the fluctuating nature of dissolved
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chromium concentrations). Vanadium greater than the bedrock BTV in
GWA-22BRU is similar to background concentrations.
Iron concentrations greater than the deep flow zone BTV are observed in
MW-20D.
• Thallium concentrations greater than the IMAC are observed in GWA-21S.
In addition to strontium and manganese, these observations of iron and thallium
greater than BTVs and IMAC represent exceedances in the vicinity of the AAB
compliance boundary along the Broad River. Concentrations of iron, manganese,
and strontium are specifically greater than BTVs in the vicinity of the off -Site
parcel (near MW-20 and GWA-22 well clusters).
Historical groundwater COI data of all wells throughout the Site were reviewed
to consider concentration trends and plume statuses throughout the Site.
Increasing or decreasing concentration trends observed were limited to boron,
strontium, sulfate, and manganese in a small number of wells at the Site. Time -
series plots pertaining to those COIs, at select wells in each source area, were
created. The wells selected include representative locations in the vicinity of the
Downstream Dam, immediately downgradient, and near the Duke Energy
property boundary.
Within the AAB East area, time -series plots for boron, strontium, sulfate, and
manganese at AB-1S/D, GWA-21S/BRU/BR, GWA-22S/BRU, MW-11S/DA, and
MW-20D/DR were created (Figures 3-35 and 3-36). Plots for ABABROR were not
created because only two rounds of data pertaining to the well are available. COI
concentrations are consistent for all COIs in all wells within the AAB East area
except:
• Generally increasing manganese concentration trends in AB-1S (Figure 3-
35) since January 2017
• Slight increasing boron concentration trends in AB-11) (Figure 3-35) since
November 2017, with the greatest concentration of 777 µg/L reported in
October 2018
• Greater boron, manganese, and sulfate concentrations in MW-11S (Figure
3-36) from historical concentrations reported 2008 through 2010 to
concentrations reported 2015 through 2018
• Decreasing strontium, sulfate, and manganese concentration trends in
MW-11DA (Figure 3-36) since it was first sampled in late 2017.
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• Greater boron concentrations in MW-20D (Figure 3-36) from historical
concentrations reported 2011 through April 2015 (113-344 µg/L) to
concentrations reported since April 2015 (257-602 µg/L). Concentrations
are less than the 02L standard of 700 µg/L.
Slight increase in boron concentration trends in GWA-22S (Figure 3-36)
since it was installed in 2015, with the greatest concentration of 419 µg/L
reported in October 2018 (less than the 02L standard of 700 µg/L)
Increasing boron concentration trends are noted in wells screened within the
preferential flow pathways beneath the Downstream Dam (AB-1D); north
toward the Broad River (MW-20D); and around the eastern abutment of the
Downstream Dam (MW-11S) north toward the Broad River (GWA-22S). It is
anticipated that boron concentrations within and downgradient of the AAB will
decrease over time as basin decanting and closure activities progress. Further
evaluation of the trend data significance will be conducted as additional
groundwater quality data become available.
AAB North
Ash depths in the AAB North area are the deepest in the basin. No free water
exists in this portion of the basin. AAB North includes a soil -covered ash stack in
the vicinity of the AB-3 well cluster (Figure 1-1). The ash storage area, north of
AB-3, contains ash underlying a layer of fill material. A dike structure at the
northern end of the ash storage area separates the area from the Broad River to
the north.
Figures 3-23, 3-24, and 3-25 are isoconcentration maps illustrating the occurrence
of boron in the shallow, deep, and bedrock flow zones throughout the Site.
Observations about boron distribution in the AAB North area include:
• Boron concentrations greater than the 02L standard of 700 µg/L in this
area exist in the majority of shallow and deep flow zone wells. All boron
concentrations in the bedrock flow zone in this area are less than the 02L
standard.
The AAB compliance boundary is located through the center of the ash
storage area, which does not have a compliance boundary. The plume of
boron concentrations greater the 02L standard is observed beyond the
AAB compliance boundary in the shallow and deep flow zones. A portion
of the plume extends north to the Broad River in the shallow and deep
flow zones.
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Boron concentrations greater than BTVs (50 µg/L) exist in all shallow and
deep flow zone wells throughout this area. The only bedrock wells with
boron greater than the bedrock flow zone BTV are located downgradient
of the ash storage area (AS-2BR and GWA-54BRO).
Figures 3-26, 3-27, and 3-28 are isoconcentration maps illustrating the occurrence
of strontium in the shallow, deep, and bedrock flow zones beneath the Site.
Observations about strontium distribution in the AAB North area include:
• Strontium does not have a 02L standard or IMAC, so the BTVs for each
flow layer are the appropriate concentrations for initial evaluation.
Strontium BTV contours in this area closely follow the boron BTV
contours. Strontium concentrations greater than BTVs are observed
throughout the AAB North area in the vicinity of the ash storage area and
locations downgradient toward the Broad River and Suck Creek.
The plume of strontium concentrations greater than BTVs is observed
beyond the AAB compliance boundary in all three flow zones. The plume
extends north to the Broad River (in all three flow zones) and northwest to
Suck Creek (in the deep and bedrock flow zones).
Figures 3-29, 3-30, and 3-31 are isoconcentration maps illustrating the occurrence
of sulfate in the shallow, deep, and bedrock flow zones beneath the Site.
Observations about sulfate distribution in the AAB North area include:
Sulfate concentrations greater the 02L standard of 250 mg/L in this area
exist in the majority of shallow flow zone wells, extending north to the
Broad River. Sulfate concentrations in the deep flow zone in this area are
less the 02L standard with the exception of CLMW-3D, located on the
western boundary of the ash storage area. All sulfate concentrations in the
bedrock flow zone in this area are less the 02L standard.
• The plume of sulfate concentrations greater the 02L standard is observed
beyond the AAB compliance boundary in the shallow flow zone and in
the vicinity of the AAB compliance boundary in the deep flow zone
(CLMW-3D). A portion of the plume extends north to the Broad River in
the shallow flow zone.
• Sulfate concentrations greater than BTVs exist in all wells in all three flow
zones in this area with the exception of GWA-54S.
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Figures 3-32, 3-33, and 3-34 are isoconcentration maps illustrating the occurrence
of manganese in the shallow, deep, and bedrock flow zones beneath the Site.
Observations about manganese distribution in the AAB North area include:
• Manganese BTVs are greater the 02L standard of 50 µg/L in all three flow
layers, so the BTVs for each flow layer are the appropriate concentrations
for initial evaluation.
Manganese concentrations greater than BTVs in this area exist in all
shallow flow zone wells, all deep flow zone wells except CLMW-3D, and
two bedrock flow zone wells located downgradient of the ash storage area
(MW-2DA and AS-2BR).
The plume of manganese concentrations greater than BTVs is observed
beyond the AAB compliance boundary in all three flow zones. A portion
of the plume extends north to the Broad River in all three flow zones.
Comprehensive 2018 groundwater data for all constituents are provided in Table
3-3. Geomean calculations of all 2018 COI data are provided in Table 3-7. While
boron, strontium, sulfate, and manganese collectively provide a good
understanding of the nature and extent of the groundwater plume in AAB
North, other COIs are observed at concentrations greater than 02L standards,
IMACs, and/or BTVs within the plume area. Most notably, COI concentrations
greater than 02L standards, IMAC, and/or BTVs in well clusters GWA-54, AS-7,
AS-8, CLMW-2, and AS-2 (located at or beyond the AAB compliance boundary)
are important to consider:
pH levels are within BTV ranges in these wells with the exception of
CLMW-2 (slightly low levels). Grout impact is the suspected cause of
greater pH levels in AS-7BRA.
TDS concentrations greater than the 02L standard are reported in AS-7S
(ash pore water) and AS-2S. TDS concentrations in AS-7BRA are likely
influenced by high pH levels from suspected grout impacts and are not
representative of groundwater conditions.
• Arsenic concentrations greater than the 02L standard are reported in AS-
7S (ash pore water) and AS-8S. Arsenic concentrations in AS-7BRA are
likely influenced by high pH levels from suspected grout impacts and are
not representative of groundwater conditions.
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• Cobalt concentrations greater than BTVs are reported in AS-7I, CLMW-2,
and AS-2S.
• Iron concentrations greater than BTVs are reported in AS-7S (ash pore
water), AS-7I, AS-8S/D, and GWA-54D/BRO.
• Thallium concentrations greater than the IMAC are reported in AS-2S, AS-
7S (ash pore water), AS-7I, AS-8S, and CLMW-2.
• Vanadium concentrations greater than BTVs are observed only in AS-
7BRA (suspected grout -impacted well) and are not representative of
groundwater conditions.
In addition to boron, strontium, sulfate, and manganese, these observations of
pH, TDS, arsenic, cobalt, iron, and thallium at concentrations greater than 02L
standards, IMACs, and/or BTVs represent exceedances at or beyond the AAB
compliance boundary located through the center of the ash storage area.
Historical groundwater COI data of all wells throughout the Site were reviewed
to consider concentration trends and plume statuses throughout the Site.
Increasing or decreasing concentration trends observed were limited to boron,
strontium, sulfate, and manganese in a small number of wells throughout the
Site. Time -series plots pertaining to these COIs, at select wells in each source
area, were created. The wells selected include representative locations within the
AAB and ash storage area and immediately downgradient.
Within the AAB North area, time -series plots for boron, strontium, sulfate, and
manganese at AB-3S/SLA/I/BRUA/BR, CCR-7S/D, CCR-6S/D, AS-1SB/D, AS-
7S/D/BRA, AS-8S/D, CLMW-3S/D, and AS-2S/D/BR were created (Figures 3-37
through 3-40). Plots for AS-7I were not created because only one round of data
from the well is available. COI concentrations within the AAB North area are
consistent for all COIs in all bedrock flow zone wells and all shallow and deep
flow zones wells except:
• Decreasing manganese concentration trends in AS-1SB (Figure 3-38) since
July 2015
• Increasing boron concentration trends in AS-11) (Figure 3-38) and ash
pore water well AS-7S (Figure 3-39) since June 2015
Increasing boron, sulfate, manganese concentration trends in CLMW-3S
(Figure 3-39) and boron and sulfate concentration trends in CLMW-3D
(Figure 3-39) since August 2008
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• Increasing boron and manganese concentration trends in AS-7D (Figure 3-
39) and AS-2S (Figure 3-40) since June 2015
• Increasing manganese concentrations in ash pore water monitoring well
AS-8S (Figure 3-40) since November 2017
The decreasing and increasing manganese concentration trends in AS-1SB and
AS-8S are consistent and might indicate influence from geochemical reactions at
the water table in those areas. It is anticipated that boron concentrations within
and downgradient of the AAB and ash storage area will decrease over time as
basin decanting and closure activities progress. Duke also plans to incorporate
the ash storage area into AAB closure plans. Further evaluation of the trend data
significance will be conducted as additional groundwater quality data become
available. Monitoring wells AS-11), AS-2S, and AS-71) are planned for semi-
annual IMP monitoring in 2019. Due to the apparent increasing concentrations
observed, AS-11), AS-2S, and AS-71) are recommended for quarterly IMP
monitoring (Section 5.1).
AAB West
AAB West includes the area where ash and other wastewater sluicing inflows
historically entered into the basin. This portion of the basin, comprised of
deposited bottom and fly ash, historically contained a meandering wastewater
flow from discharge piping southeast to the center of the AAB. This area also
contains the former drainage pathway of Suck Creek prior to its reroute. The
Upstream Dam now separates the AAB from the rerouted Suck Creek to the
west.
COI concentrations greater than 02L standards, IMACs, and/or BTVs are
reported in wells located west of Suck Creek (MW-23, GWA-33, GWA-43, and
GWA-44 well clusters) for certain COIs. Additional assessment in this Unit 6
source area is being performed to determine whether COIs in that area are the
result of COI migration from the AAB underflowing Suck Creek or are from a
separate source area in the vicinity of Unit 6. Concentration observations from
wells in that area are generally not evaluated in this report.
Figures 3-23, 3-24, and 3-25 are isoconcentration maps illustrating the occurrence
of boron in the shallow, deep, and bedrock flow zones throughout the Site.
Observations about boron distribution in the AAB West area include:
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Boron concentrations greater than the 02L standard of 700 µg/L in this
area are limited to shallow flow zone wells (along the southern abutment
of the Upstream Dam) and deep flow zone wells (downgradient of
Upstream Dam and slightly north of the ash basin waste boundary). All
boron concentrations in the bedrock flow zone in this area are less than
the 02L standard.
The AAB compliance boundary is located west of Suck Creek in this area.
However, the wells west of Suck Creek lack detectable boron, indicating
Suck Creek is acting as a local groundwater discharge feature that
prevents COI migration farther west. Therefore, the plume extends
northwest to Suck Creek but does not extend to the AAB compliance
boundary. Additional lines of evidence will be provided supporting this
determination in the upcoming 2019 CAP update.
Boron concentrations greater than BTVs (50 µg/L) exist in all wells in all
three flow zones throughout this area.
Figures 3-26, 3-27, and 3-28 are isoconcentration maps illustrating the occurrence
of strontium in the shallow, deep, and bedrock flow zones beneath the Site.
Observations about strontium distribution in the AAB West area include:
• Strontium does not have a 02L standard or IMAC, so the BTVs for each
flow layer are the appropriate concentrations for initial evaluation.
Strontium concentrations greater than BTVs exist in all sampled wells in
all three flow zones throughout this area except CCR-13D (located to the
south near the topographical high).
The plume of strontium concentrations greater than BTVs extends
northwest to Suck Creek but does not extend to the AAB compliance
boundary. Strontium concentrations greater than BTVs are reported in
wells located west of Suck Creek that lack detectable boron, indicating the
strontium concentrations are likely related to a separate source area in the
vicinity of Unit 6.
Figures 3-29, 3-30, and 3-31 are isoconcentration maps illustrating the occurrence
of sulfate in the shallow, deep, and bedrock flow zones beneath the Site.
Observations about sulfate distribution in the AAB West area include:
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• Sulfate concentrations are less than the 02L standard of 250 mg/L in all
wells in all three flow zones in this area except in two deep flow zone CCR
wells (CCR-81) and CCR-9D).
The plume of sulfate concentrations greater than the 02L standard in the
deep flow zone extends northwest to Suck Creek but does not extend to
the AAB compliance boundary. Sulfate concentrations greater than the
02L standard are reported in wells located west of Suck Creek that lack
detectable boron, indicating the sulfate concentrations are likely related to
a separate source area.
• Sulfate concentrations greater than BTVs exist in all sampled wells in all
three flow zones throughout this area except CCR-13D (located to the
south near the topographical high).
Figures 3-32, 3-33, and 3-34 are isoconcentration maps illustrating the occurrence
of manganese in the shallow, deep, and bedrock flow zones beneath the Site.
Observations about manganese distribution in the AAB West area include:
Manganese BTVs are greater than the 02L standard of 50 µg/L in all three
flow layers, so the BTVs for each flow layer are the appropriate
concentrations for initial evaluation.
• Manganese concentrations greater than BTVs exist in all sampled wells in
all three flow zones throughout this area except CCR-13D (located to the
south near the topographical high).
• The plume of manganese concentrations greater than BTVs extends
northwest to Suck Creek but does not extend to the AAB compliance
boundary. Manganese concentrations greater than BTVs are reported in
wells located west of Suck Creek that lack detectable boron, indicating the
manganese concentrations are likely related to a separate source area in
the vicinity of Unit 6.
Comprehensive 2018 groundwater data for all constituents are provided in Table
3-3. Geomean calculations of all 2018 COI data are provided in Table 3-7. While
boron, strontium, sulfate, and manganese collectively provide a good
understanding of the nature and extent of the groundwater plume in AAB West,
concentrations of other COIs are reported as being greater than 02L standards,
IMACs, and/or BTVs within the plume area. Most notably, COI concentrations
greater than 02L standards, IMAC, and/or BTVs in well clusters CCR-11, MW-8,
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GWA-20, and CCR-9 (located downgradient of the Upstream Dam in the vicinity
of Suck Creek) are important to consider:
• pH levels are within BTV ranges in these wells with the exception of CCR-
9D (slightly low level in May 2018). Grout impact is the suspected cause of
greater pH levels in several GWA-20BR samples; however, levels appear
to be within BTV ranges as of October 2018.
• TDS concentrations are less than the 02L standard in these wells except
CCR-9D.
• Arsenic concentrations are less than the 02L standard in these wells.
• Cobalt concentrations greater than BTVs are reported in CCR-9D, GWA-
20D, and some samples in GWA-20S.
• Iron concentrations greater than BTVs are reported in GWA-20S/D/BR and
MW-8S/D.
• Thallium concentrations greater than the IMAC are reported in GWA-20D
and in one sample in CCR-11D.
• Vanadium concentrations greater than BTVs were observed in only one
sample in GWA-20BR (grout impact suspected) and one sample in MW-8S
(which appears anomalous) and are not representative of groundwater
conditions. The anomalous vanadium concentration in MW-8S likely
results from particulate influence in the sample.
Based upon water levels and COI distributions, Suck Creek acts as a local
groundwater discharge feature that prevents COI migration from AAB West
farther west. Therefore, the plume extends northwest to Suck Creek but does not
extend to the AAB compliance boundary. Additional assessment activities are
being conducted at the Unit 6 source area. The results of these additional
assessment activities will be provided in the 2019 CAP update. If the additional
assessment activities indicate that COIs west of Suck Creek result from
underflow of Suck Creek from the AAB, this evaluation of COI distribution will
be reconsidered.
Historical groundwater COI data of all wells throughout the Site were reviewed
to consider concentration trends and plume statuses throughout the Site.
Increasing or decreasing concentration trends observed were limited to boron,
strontium, sulfate, and manganese in a small number of wells throughout the
Site. Time -series plots pertaining to these COIs, at select wells in each source
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area, were created. The wells selected include representative locations within the
AAB, in the vicinity of the Downstream Dam, and immediately downgradient
near Suck Creek.
Within the AAB West area, time -series plots for boron, strontium, sulfate, and
manganese at AB-3S/SLA/I/BRUA/BR, AB-2S/D, GWA-20S/D/BR, CCR-11S/D,
and CCR-9D were created (Figures 3-41 through 3-43). Plots for AB-2BRO were
not created because only three rounds of data from the well are available. COI
concentrations within the AAB West area are consistent for all COIs in all wells
except:
Increasing boron and sulfate concentration trends in CCR-9D (Figure 3-42)
since June 2016 with a decrease in the most recent sample event
The increasing boron and sulfate concentration trends in CCR-9D are reported in
a well located beneath the downgradient toe of the Upstream Dam. It is
anticipated that boron and sulfate concentrations within and downgradient of
the AAB will decrease over time as basin decanting and closure activities
progress. In fact, boron and sulfate concentrations were significantly less in May
2018 results than in February 2018 results. Further evaluation of the trend data
significance will be conducted as additional groundwater quality data become
available. Monitoring well CCR-9D is not included for IMP monitoring in 2019.
Due to the apparent increasing concentrations observed, CCR-9D is
recommended for quarterly IMP monitoring (Section 5.1).
AAB South
AAB South includes the most upland area of the basin footprint where ash
thickness is generally less than it is in the rest of the basin. This portion of the
AAB is comprised predominantly of deposited bottom and fly ash and
historically contained free water. A settling cell was constructed in this southern
portion of the basin in 2012 by relocating deposited ash to the northwest into a
soil -covered ash stack in the vicinity of the AB-3 well cluster.
Figures 3-23, 3-24, and 3-25 are isoconcentration maps illustrating the occurrence
of boron in the shallow, deep, and bedrock flow zones throughout the Site.
Observations about boron distribution in the AAB South area include:
• Boron concentrations greater than the 02L standard of 700 µg/L in this
area are limited to shallow flow zone well CCR-16S and deep flow zone
wells CCR-14D and GWA-27DA to the west between the AAB and Suck
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Creek. The preferential plume pathways appear to remain in the shallow
flow zone in the southern portion of this area and in the deep flow zone in
the northern portion of this area. All boron concentrations in the bedrock
flow zone in this area are less than the 02L standard.
Groundwater was not encountered in the shallow flow zone at monitoring
well clusters installed in the vicinity of the ridge located between AAB
South and Suck Creek (Figure 1-1 and Figure 1-2). Therefore, it is
interpreted that flow and COI migration in the shallow flow zone is
limited to areas east of the ridge.
• Suck Creek acts as a local groundwater discharge feature that prevents
COI migration farther west. Therefore, it is expected that the boron plume
extends west to Suck Creek in the deep flow zone but does not extend
beyond Suck Creek.
• The AAB compliance boundary is located east of Suck Creek in the
southern portion of the area west of the AAB and west of Suck Creek in
the northern portion of the area west of the AAB. The boron plume does
not appear to extend to the AAB compliance boundary in any of the flow
zones.
Boron concentrations greater than BTVs (50 µg/L) generally exist in wells
in the northern portion of this area; boron concentrations are generally
less than BTVs in wells in the southern portion of this area.
Figures 3-26, 3-27, and 3-28 are isoconcentration maps illustrating the occurrence
of strontium in the shallow, deep, and bedrock flow zones beneath the Site.
Observations about strontium distribution in the AAB South area include:
• Strontium does not have a 02L standard or IMAC, so the BTVs for each
flow layer are the appropriate concentrations for initial evaluation.
• Strontium concentrations greater than BTVs exist in the westernmost deep
and bedrock flow zone wells located west of the AAB (GWA-47D, GWA-
27DA/BR). Strontium concentrations are less than BTVs in all sampled
shallow groundwater wells in the area and in deep and bedrock flow zone
wells beneath the AAB footprint and in the vicinity of the topographical
high west of the AAB (CCR-15D).
• Suck Creek acts as a local groundwater discharge feature that prevents
COI migration farther west. Therefore, the strontium plume extends west
to Suck Creek but does not extend beyond Suck Creek.
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• The plume of strontium concentrations greater than BTVs extends west to
Suck Creek in the deep and bedrock flow zones. A portion of the plume
may extend beyond the AAB compliance boundary in the deep flow zone
northwest of GWA-47D prior to discharging to Suck Creek.
Figures 3-29, 3-30, and 3-31 are isoconcentration maps illustrating the occurrence
of sulfate in the shallow, deep, and bedrock flow zones beneath the Site.
Observations about sulfate distribution in the AAB South area include:
• All sulfate concentrations in this area are less than its 02L standard of 250
mg/L.
• Sulfate concentrations greater than BTVs in this area are limited to a
portion of the deep flow zone in the vicinity of CCR-14D and GWA-27DA
and the northern portion of the shallow flow zone (in vicinity and north of
CCR-16S). Sulfate concentrations in bedrock wells throughout the area are
less than the bedrock flow zone BTV.
Figures 3-32, 3-33, and 3-34 are isoconcentration maps illustrating the occurrence
of manganese in the shallow, deep, and bedrock flow zones beneath the Site.
Observations about manganese distribution in the AAB South area include:
Manganese BTVs are greater than the 02L standard of 50 µg/L in all three
flow layers, so the BTVs for each flow layer are the appropriate
concentrations for initial evaluation.
Manganese concentrations are less than the shallow flow zone BTV in all
shallow groundwater wells except CLMW-6 (approximately at its BTV).
Manganese concentrations greater than the deep flow zone BTV are
limited to wells beneath the southeastern ash basin footprint and sampled
wells west of the AAB. Manganese concentrations greater than the
bedrock flow zone BTV are limited to wells beneath the southeastern AAB
footprint.
Suck Creek acts as a local groundwater discharge feature that prevents
COI migration farther west in the deep flow zone. Therefore, the
manganese plume extends west to Suck Creek in the deep flow zone but
does not extend beyond Suck Creek.
The plume of manganese concentrations greater than BTVs extends west
to Suck Creek in the deep flow zone. A portion of the plume may extend
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beyond the AAB compliance boundary in the deep flow zone northwest of
GWA-47D prior to discharging to Suck Creek.
Comprehensive 2018 groundwater data for all constituents are provided in Table
3-3. Geomean calculations of all 2018 COI data are provided in Table 3-7. While
boron, strontium, sulfate, and manganese collectively provide a good
understanding of the nature and extent of the groundwater plume in AAB South,
concentrations of other COIs are reported as being greater than 02L standards,
IMACs, and/or BTVs within the plume area. Most notably, COI concentrations
greater than 02L standards, IMAC, and/or BTVs in monitoring wells CCR-16S,
GWA-26S, GWA-47D, CCR-15D, and GWA-27DA/BR (located downgradient of
the AAB South in closest vicinity of Suck Creek) are important to consider:
• pH levels are within BTV ranges in these wells.
• TDS, arsenic, cobalt, thallium, and vanadium concentrations are less than
02L standards, IMACs, and/or BTVs in these wells.
• Chromium concentrations are less than the 02L standard in these wells
with the exception of anomalous samples in GWA-27BR and GWA-47D
(which are not likely representative of groundwater conditions).
Chromium concentrations in these wells vary significantly, and the
greater, anomalous levels likely result from particulate influence in the
sample.
• Iron concentrations are less than BTVs in these wells with the exception of
variable observations in GWA-47D (which are not likely representative of
groundwater conditions). Iron concentrations in this well vary
significantly, and the greater, anomalous levels likely result from
particulate influence in the sample.
• Vanadium concentrations are less than BTVs in these wells with the
exception of anomalous samples in GWA-47D (which are not likely
representative of groundwater conditions). Vanadium concentrations in
this well vary significantly, and the greater, anomalous levels likely result
from particulate influence in the sample.
Based upon water levels and COI distributions, Suck Creek acts as a local
groundwater discharge feature that prevents COI migration from AAB South
farther west. Therefore, the plume extends west to Suck Creek but does not
extend west beyond Suck Creek. The plume of strontium and manganese greater
than BTVs in the deep flow zone (Figure 3-27 and Figure 3-33) may extend
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beyond the AAB compliance boundary northwest of GWA-47D prior to
discharging to Suck Creek.
Historical groundwater COI data of all wells throughout the Site were reviewed
to consider concentration trends and plume statuses throughout the Site.
Increasing or decreasing concentration trends observed were limited to boron,
strontium, sulfate, and manganese in a small number of wells throughout the
Site. Time -series plots pertaining to these COIs, at select wells in each source
area, were created. The wells selected include representative locations within the
AAB and immediately downgradient between the AAB and Suck Creek.
Within the AAB South area, time -series plots for boron, strontium, sulfate, and
manganese at AB-6S/D/BR, CCR-16S/D, GWA-47D, and GWA-27DA/BR were
created (Figures 3-44 and 3-45). COI concentrations within the AAB South area
are consistent for all COIs in all wells except:
• Decreasing manganese concentration trends in GWA-47D (Figure 3-45)
since April 2016
• Increasing boron concentration trends in GWA-47D (Figure 3-45) since
April 2016
The decreasing manganese and increasing boron concentration trends in GWA-
47D are not observed in CCR-16S/D, a well cluster located between GWA-47D
and the AAB. Further evaluation of the trend data significance will be conducted
as additional groundwater quality data become available.
3.4 Former Units 1-4 Ash Basin Water Quality
3.4.1 Site Conditions
The former Units 1-4 ash basin (U14 basin) is located along the Broad River
immediately east of the coal pile (Figure 1-2). The former basin is separated from
the AAB by Suck Creek. The former basin was unlined and impounded by an
earthen dam located along the north and northeast side of the basin. The former
basin previously received inflows from Units 1-4 operation, primarily sluiced
bottom ash and fly ash. The U1-4 basin was retired in 1977 once it reached
capacity. The upstream, western portions of the ash basin were formerly
converted into holding cells for storm and plant process water. Water from those
holding cells was pumped to the AAB to the east. The impounded ash material
within the inactive basin was previously capped with a soil cover approximately
2 feet thick.
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Excavation of CCR historically deposited in the U1-4 ash basin was completed in
2017. A lined retention basin (LRB) and wastewater treatment plant were
constructed and are operational within the U1-4 ash basin footprint.
3.4.2 Constituent Occurrence and Plume Status
The U1-4 basin is considered a single source area for purposes of evaluating
constituent occurrence and plume status in this section.
The U1-4 basin was historically comprised of ash and has been completely
excavated. A LRB and wastewater treatment plant are constructed in the U1-4
basin footprint. Three well clusters were installed to screen ash pore water and
underlying soil, transition zone, and bedrock. These wells were abandoned
during the beginning of U1-4 basin closure and have not been sampled since late
2015 or early 2016. Therefore, all 2018 sample results referenced in this report
associated with the U1-4 basin are for wells located outside the former basin's
waste boundary. Since the U1-4 basin does not have an associated compliance
boundary, the location for compliance comparison is the former basin's waste
boundary (Figure 1-2).
Figures 3-23, 3-24, and 3-25 are isoconcentration maps illustrating the occurrence
of boron in the shallow, deep, and bedrock flow zones throughout the Site.
Observations about boron distribution in the U1-4 basin area include:
Boron concentrations are less than the 02L standard of 700 µg/L in this
area except at IB-6S, located downgradient of the U1-4 basin dam near the
Broad River.
The plume of boron concentrations greater than the 02L standard is
observed in the shallow flow zone beyond the U1-4 basin waste boundary
in the vicinity of IB-6S. A portion of the plume extends north to the Broad
River in the shallow flow zone.
• Boron concentrations greater than BTVs (50 µg/L) are observed
throughout the U1-4 basin area but are not observed in wells east of the
former basin between the U1-4 basin and Suck Creek.
Figures 3-26, 3-27, and 3-28 are isoconcentration maps illustrating the occurrence
of strontium in the shallow, deep, and bedrock flow zones beneath the Site.
Observations about strontium distribution in the U1-4 basin area include:
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• Strontium does not have a 02L standard or IMAC, so the BTVs for each
flow layer are the appropriate concentrations for initial evaluation.
Strontium concentrations greater than BTVs exist in all wells in this area
except shallow and deep flow zone wells located east between the U1-4
basin and Suck Creek.
Strontium concentrations greater than BTVs also exist in upgradient wells
in this area (GWA-14 and GWA-13 well clusters). Separate assessment of
the nearby gypsum stack -out area is planned during 2019 and 2020, and
assessment results will provide additional understanding of the
conditions in that area.
Strontium concentrations greater than BTVs is observed in the shallow,
deep, and bedrock flow zones beyond the U14 basin waste boundary. A
portion of the plume extends north to the Broad River in the shallow and
deep flow zones.
Figures 3-29, 3-30, and 3-31 are isoconcentration maps illustrating the occurrence
of sulfate in the shallow, deep, and bedrock flow zones beneath the Site.
Observations about sulfate distribution in the U1-4 basin area include:
• All sulfate concentrations in this area are less than the 02L standard of 250
mg/L.
Sulfate BTV contours closely follow the strontium BTV contours in this
area of the Site.
Figures 3-32, 3-33, and 3-34 are isoconcentration maps illustrating the occurrence
of manganese in the shallow, deep, and bedrock flow zones beneath the Site.
Observations about manganese distribution in the U1-4 basin area include:
Manganese BTVs are greater than the 02L standard of 50 µg/L in all three
flow layers, so the BTVs for each flow layer are the appropriate
concentrations for initial evaluation.
Manganese concentrations greater than BTVs include all shallow flow
zone wells along the Broad River and all deep flow zone wells along the
Broad River except CCR-IB-3D. Upgradient monitoring well GWA-13BR
is the only bedrock flow zone well with manganese concentrations greater
than the bedrock flow zone BTV. The U14 basin is likely not the source of
manganese results reported in GWA-13BR based upon groundwater flow
direction (Figures 3-1 through 3-3 and Figures 3-12 through 3-14).
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Additional assessment in the vicinity of Unit 6 may help refine
understanding in this area.
• Manganese concentrations are significantly greater in the shallow flow
zone wells than in the deep flow zones along the Broad River.
• The plume of manganese concentrations greater than BTVs is observed in
the shallow and deep flow zones beyond the U1-4 basin waste boundary.
A portion of the plume extends north to the Broad River in the shallow
and deep flow zones.
Comprehensive 2018 groundwater data for all constituents are provided in Table
3-3. Geomean calculations of all 2018 COI data are provided in Table 3-7. While
boron, strontium, sulfate, and manganese collectively provide a good
understanding of the nature and extent of the groundwater plume in the U1-4
basin area, other COIs are observed greater than 02L standards, IMACs, and/or
BTVs within the plume area. Most notably, COI concentrations greater than 02L
standards, IMAC, and/or BTVs in downgradient well clusters along the Broad
River (GWA-10, CCR-IB-3, IB-7, GWA-11, IB-6, and CCR-IB-1) are important to
consider:
• pH levels are within BTV ranges in these wells with the exception of
August and October 2018 levels in CCR-IB-31)
• TDS concentrations are less than the 02L standard in these wells with the
exception of the May 2018 result in CCR-IB-3S.
• Arsenic concentrations are less than the 02L standard in these wells with
the exception of CCR-IB-3S and IB-7S.
• Chromium concentrations are less than the 02L standard in all of these
wells.
• Cobalt concentrations are less than BTVs with the exception of IB-6S, IB-
7S, and some samples collected from GWA-10S.
• Iron concentrations are less than BTVs with the exception of CCR-IB-1D,
CCR-IB-3S, IB-613, I13-7S, and some samples collected from CCR-IB-1S and
GWA-11S/BRU.
• Thallium concentrations are less than the IMAC with the exception of
GWA-10S (consistently 0.21 µg/L in 2018 compared to 0.2 µg/L IMAC)
and the May 2018 result in CCR-IB-11).
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• Vanadium concentrations are less than BTVs with the exception of CCR-
IB-3D and some samples collected from CCR-IB-1D and GWA-11S.
In addition to boron, strontium, and manganese, these observations of TDS,
arsenic, cobalt, iron, thallium, and vanadium greater than 02L standards, IMACs,
and/or BTVs represent exceedances beyond the U14 basin waste boundary.
Historical groundwater COI data of all wells throughout the Site were reviewed
to consider concentration trends and plume statuses throughout the Site.
Increasing or decreasing concentration trends observed were limited to boron,
strontium, sulfate, and manganese in a small number of wells throughout the
Site. Time -series plots pertaining to these COIs, at select wells in each source
area, were created. The wells selected include representative locations
immediately downgradient between the U14 basin and the Broad River.
Within the U1-4 basin area, time -series plots for boron, strontium, sulfate, and
manganese at GWA-10S/D, GWA-11S/D, and CCR-IB-1S/D were created (Figure
3-46) as representative of monitoring wells downgradient of the U1-4 basin along
the Broad River. COI concentrations are consistent for all COIs in all wells within
the U1-4 basin area with the exception of iron and manganese in GWA-13BR (not
plotted). Monitoring well GWA-13BR is located upgradient near the U1-4 basin
waste boundary. Separate assessment of the nearby gypsum stack -out area is
planned during 2019 and 2020, and assessment results will provide additional
understanding of the conditions in that area. Further evaluation of trend data
significance will be conducted as additional groundwater quality data become
available.
3.5 Unit 5 Inactive Ash Basin Water Quality
3.5.1 Site Conditions
The Unit 5 inactive ash basin (U5 basin) is located southwest of Unit 5 and west
of Unit 6, south of the Broad River (Figure 1-2). The U5 basin is an unlined basin
impounded by two earthen dams located along the north and northeast sides of
the basin. The inactive basin was constructed in 1970 (in advance of Unit 5
operations) and received sluiced ash from Unit 5 from 1972 until 1980.
The U5 basin dams are earth fill embankments. The Main and Saddle Dams are
the principal embankments that form this ash basin (Figure 1-1). The crest of the
Main Dam is generally oriented in an east -west direction and parallels the flow
of the Broad River to the north. The crest of the Saddle Dam is generally
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oriented in a southeast -northwest direction, and the Unit 5 cooling towers are
located immediately northeast.
The U5 basin is currently covered with topsoil and vegetation. A portion of the
footprint is used as a laydown yard. The basin currently receives stormwater
from a localized drainage area. Free water remains in a portion of the inactive
basin footprint to the southeast.
3.5.2 Constituent Occurrence and Plume Status
The U5 basin is divided into two source areas for purposes of evaluating
constituent occurrence and plume status in this section: U5 basin East and U5
basin West.
U5 basin East
U5 basin East includes the area where ash and other wastewater sluicing inflows
historically entered into the basin. This portion of the basin is comprised of
bottom and fly ash deposited in the basin during the 1970s. Free water within the
U5 basin waste boundary is observed only in a portion of the southeastern corner
of the basin. The U5 basin Saddle Dam separates the U5 inactive basin from the
Broad River in the U5 basin East area. Since the U5 basin does not have an
associated compliance boundary, the location for compliance comparison is the
U5 basins waste boundary.
Figures 3-23, 3-24, and 3-25 are isoconcentration maps illustrating the occurrence
of boron in the shallow, deep, and bedrock flow zones throughout the Site.
Observations about boron distribution in the U5 basin East area include:
Boron concentrations are less than the 02L standard of 700 µg/L in all
wells throughout this area.
Boron concentrations greater than BTVs (50 µg/L) are observed in the
vicinity of the eastern U5 basin waste boundary and in areas
downgradient of the U5 basin Saddle Dam north to the Broad River in the
shallow and deep flow zones. Boron concentrations greater than the
bedrock BTV are observed in the area where the U5 basin Saddle Dam and
Main Dam intersect and downgradient areas north to the Broad River.
Figures 3-26, 3-27, and 3-28 are isoconcentration maps illustrating the occurrence
of strontium in the shallow, deep, and bedrock flow zones beneath the Site.
Observations about strontium distribution in the U5 basin East area include:
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• Strontium does not have a 02L standard or IMAC, so the BTVs for each
flow layer are the appropriate concentrations for initial evaluation.
Strontium concentrations greater than BTVs exist in all wells in this area
except monitoring well MW-42S in the shallow zone, monitoring well U5-
8D in the deep flow zone, and monitoring well GWA-31BRA in the
bedrock flow zone.
The plume of strontium concentrations greater than BTVs is observed in
the shallow, deep, and bedrock flow zones beyond the U5 basin waste
boundary on its northern and eastern sides. The plume extends north to
the Broad River in all three flow zones.
Figures 3-29, 3-30, and 3-31 are isoconcentration maps illustrating the occurrence
of sulfate in the shallow, deep, and bedrock flow zones beneath the Site.
Observations about sulfate distribution in the U5 basin West area include:
Sulfate concentrations greater than the 02L standard (250 mg/L) are
observed along the eastern waste boundary of U5 basin East in the
shallow zone; along the eastern waste boundary of U5 basin East and
downgradient of the U5 basin Saddle Dam in the deep flow zone; and in
monitoring well MW-38BR in the vicinity of the Broad River in the
bedrock flow zone.
• The plume of sulfate concentrations greater than the 02L standard is
observed in the shallow and deep flow zones beyond the U5 basin waste
boundary on its northern and eastern sides. The plume extends north to
the Broad River in the deep and bedrock flow zones.
Sulfate BTV contours closely follow the strontium BTV contours in this
area of the Site.
Figures 3-32, 3-33, and 3-34 are isoconcentration maps illustrating the occurrence
of manganese in the shallow, deep, and bedrock flow zones beneath the Site.
Observations about manganese distribution in the U5 basin East area include:
• Manganese BTVs are greater than the 02L standard of 50 µg/L in all three
flow layers, so the BTVs for each flow layer are the appropriate
concentrations for initial evaluation.
• Manganese concentrations greater than BTVs include the majority of
shallow flow zone wells throughout this area, all deep flow zone wells in
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the vicinity and downgradient of the U5 basin Saddle Dam, and bedrock
flow zone well MW-38BR along the Broad River.
Manganese concentrations are generally greatest in monitoring wells
screened within, beneath, and immediately downgradient of the U5 basin
Saddle Dam in the shallow and deep flow zones.
The plume of manganese concentrations greater than BTVs is observed in
the shallow, deep, and bedrock flow zones beyond the U5 basin waste
boundary. A portion of the plume extends north to the Broad River in all
three flow zones.
Comprehensive 2018 groundwater data for all constituents are provided in Table
3-3. Geomean calculations of all 2018 COI data are provided in Table 3-7. While
boron, strontium, sulfate, and manganese collectively provide a good
understanding of the nature and extent of the groundwater plume in the U5
basin East area, other COIs are observed greater than 02L standards, IMACs,
and/or BTVs within the plume area. Most notably, COI concentrations greater
than 02L standards, IMAC, and/or BTVs in downgradient well clusters GWA-5,
CCR-U5-8, GWA-31, CCR-U5-6, GWA-4, GWA-36, MW-38, GWA-37, and GWA-
56 (located at or beyond the U5 basin East waste boundary) are important to
consider:
• pH levels are within BTV ranges in these wells with the exception of CCR-
U5-6S, CCR-U58D (slightly low levels), GWA-4S (slightly low levels), and
GWA-31BRA (slightly high levels from potential grout influence)
• TDS concentrations are less than the 02L standard in these wells with the
exception of CCR-U5-8S/D, GWA-5S, GWA-31D, GWA-36D, and GWA-
37D. The wells with greatest TDS concentrations are located along the
eastern waste boundary and downgradient of the U5 basin Saddle Dam.
• Arsenic concentrations are less than the 02L standard in all of these wells.
• Chromium concentrations are less than the 02L standard in these wells
with the exception of the May 2018 result in CCR-U5-8S (anomalous and
likely not representative of groundwater conditions) and the January 2018
and May 2018 results in GWA-37D.
• Cobalt concentrations are greater than BTVs in approximately half of these
wells: CCR-U5-6S/DA, CCR-U58S/D, GWA-4S/D, GWA-36S/D, and GWA-
37S. The wells with greatest cobalt concentrations are located along the
eastern waste boundary and downgradient of the U5 basin Saddle Dam.
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Iron concentrations are greater than BTVs in the majority of these wells
which were analyzed for iron: GWA-4S/D, GWA-36S/D, GWA-37S/D, and
GWA-56S/D. The wells with greatest iron concentrations are located
downgradient of the U5 basin Saddle Dam and are especially great in
monitoring wells GWA-4S/D and GWA-37S.
• Thallium concentrations are less than the IMAC with the exception of
CCR-U5-6S, CCR-U5-8S/D, GWA-4S, GWA-5S, and GWA-36S.
Vanadium concentrations are less than BTVs with the exception of GWA-
37D and some results in GWA-31BRA. These concentrations are only
slightly greater than BTVs and are within the range of background
concentrations previously observed at the Site (Table 3-7). Therefore, the
vanadium concentrations are likely attributed to naturally occurring
levels.
In addition to boron, strontium, sulfate, and manganese, these observations of
pH, TDS, chromium, cobalt, iron, and thallium greater than 02L standards,
IMACs, and/or BTVs represent exceedances beyond the U5 basin waste
boundary in this area.
Historical groundwater COI data of all wells throughout the Site were reviewed
to consider concentration trends and plume statuses throughout the Site.
Increasing or decreasing concentration trends observed were limited to boron,
strontium, sulfate, and manganese in a small number of wells throughout the
Site. Time -series plots pertaining to these COIs, at select wells in each source
area, were created. The wells selected include representative locations within U5
basin East and immediately downgradient between the U5 basin and the Broad
River.
Within the U5 basin East area, time -series plots for boron, strontium, sulfate, and
manganese at CCR-U5-8S/D, GWA-4S/D, and GWA-37S/D were created (Figure
3-47) as representative of monitoring wells along the eastern waste boundary
and downgradient of the U5 basin Saddle Dam. COI concentrations are
consistent for all COIs in all wells within the U5 basin East area with the
exception of cobalt in GWA-4D (not plotted) from June 2015 to January 2018.
Cobalt concentrations have remained steady in monitoring well GWA-4D since
January 2018, which may indicate the plume is currently stable. Further
evaluation of trend data significance will be conducted as additional
groundwater quality data become available.
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U5 basin West
U5 basin West is the farthest location from where ash and other wastewater
sluicing inflows historically entered into the basin. The discharge tower that
historically discharged free water from the basin was located in the northwest
corner of this area. This portion of the U5 basin is comprised of bottom and fly
ash deposited in the basin during the 1970s. Soil fill material was placed over the
southern portion of Unit 5 basin West and vegetated. Free water no longer exists
within the U5 basin West area. The U5 basin Main Dam separates the U5 inactive
basin from the Broad River in the U5 basin West area. Since the U5 basin does
not have an associated compliance boundary, the location for compliance
comparison is the U5 basin's waste boundary.
Figures 3-23, 3-24, and 3-25 are isoconcentration maps illustrating the occurrence
of boron in the shallow, deep, and bedrock flow zones throughout the Site.
Observations about boron distribution in the U5 basin West area include:
• Boron concentrations are less than the 02L standard of 700 µg/L in all
wells throughout this area except monitoring well CCR-U5-4D, located at
the U5 basin waste boundary.
The plume of boron concentrations greater than the 02L standard is
observed in the deep flow zone beyond the U5 basin waste boundary to
the north. The plume may extend north to the Broad River in the deep
flow zone.
• Boron concentrations greater than BTVs (50 µg/L) are observed in the
vicinity of the U5 basin Main Dam and in areas downgradient to the
Broad River in the all three flow zones.
Figures 3-26, 3-27, and 3-28 are isoconcentration maps illustrating the occurrence
of strontium in the shallow, deep, and bedrock flow zones beneath the Site.
Observations about strontium distribution in the U5 basin West area include:
• Strontium does not have a 02L standard or IMAC, so the BTVs for each
flow layer are the appropriate concentrations for initial evaluation.
Strontium concentrations greater than BTVs exist in all sampled wells in
this area except monitoring wells MW-34S, GWA-34S, and U5-4S in the
shallow zone and GWA-1BRU in the deep flow zone. These wells with
strontium concentrations less than BTVs are located west of the U5 basin
and in the center of the U5 basin Main Dam crest (U54S).
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The plume of strontium concentrations greater than BTVs is observed in
the shallow, deep, and bedrock flow zones beyond the U5 basin waste
boundary on its northern side. The plume extends north to the Broad
River in all three flow zones.
Figures 3-29, 3-30, and 3-31 are isoconcentration maps illustrating the occurrence
of sulfate in the shallow, deep, and bedrock flow zones beneath the Site.
Observations about sulfate distribution in the U5 basin West area include:
• Sulfate concentrations are less than the 02L standard (250 mg/L) in all
wells throughout this area except CCR-U5-4D (located at the U5 basin
waste boundary) and U5-5BR (located along the U5 basin Main Dam
crest).
The plume of sulfate concentrations greater than the 02L standard is
observed in the deep and bedrock flow zones beyond the U5 basin waste
boundary in the vicinity of the U5 basin Main Dam eastern abutment and
locations downgradient to the north. The plume may extend north to the
Broad River in the deep and bedrock flow zones.
Sulfate BTV contours closely follow the strontium BTV contours in this
area of the Site.
Figures 3-32, 3-33, and 3-34 are isoconcentration maps illustrating the occurrence
of manganese in the shallow, deep, and bedrock flow zones beneath the Site.
Observations about manganese distribution in the U5 basin West area include:
• Manganese BTVs are greater than the 02L standard of 50 µg/L in all three
flow layers, so the BTVs for each flow layer are the appropriate
concentrations for initial evaluation.
• Manganese concentrations greater than the shallow and deep BTVs
include wells beneath the U5 basin, in the vicinity of the U5 basin Main
Dam, and in areas downgradient to the Broad River in the shallow and
bedrock flow zones. Manganese concentrations greater than the bedrock
flow zone BTV were observed only in monitoring well U5-2BR, located
beneath the U5 basin. Manganese concentrations are less than BTVs in all
wells located west and northwest of the U5 basin and in the U5-4 well
cluster in all three flow zones.
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Manganese concentrations are generally greatest in monitoring wells
screened within, beneath, and immediately downgradient of the U5 basin
and Main Dam in the shallow and deep flow zones.
The plume of manganese concentrations greater than BTVs is observed in
the shallow and deep flow zones beyond the U5 basin waste boundary
and may extend north to the Broad River. The plume of manganese
concentrations greater than the bedrock flow zone BTV may extend
beyond the U5 basin waste boundary and north to the Broad River in the
western portion of U5 basin West.
Comprehensive 2018 groundwater data for all constituents are provided in Table
3-3. Geomean calculations of all 2018 COI data are provided in Table 3-7. While
boron, strontium, sulfate, and manganese collectively provide a good
understanding of the nature and extent of the groundwater plume in the U5
basin West area, other COIs are observed greater than 02L standards, IMACs,
and/or BTVs within the plume area. Most notably, COI concentrations greater
than 02L standards, IMAC, and/or BTVs in downgradient well clusters CCR-U5-
3, CCR-U5-4, GWA-2, and GWA-35 (located at or beyond the U5 basin West
waste boundary) are important to consider:
• pH levels are within BTV ranges in these wells with the exception of
monitoring well GWA-2BR (high levels likely from grout impact).
• TDS concentrations are less than the 02L standard in these wells with the
exception of monitoring well CCR-U5-4D, located at the U5 basin waste
boundary.
• Arsenic concentrations are less than the 02L standard in these wells.
• Chromium concentrations are less than the 02L standard in these wells.
• Cobalt concentrations are less than BTVs in these wells with the exception
of monitoring wells CCR-U5-4S/D (located at the U5 basin waste
boundary) and GWA-35S (located downgradient of the western portion of
U5 basin West).
• Iron concentrations are greater than BTVs in approximately half of these
monitoring wells: CCR-U5-4S/D, GWA-35S/D, and some results from
CCR-U5-3D and GWA-2BRU.
• Thallium concentrations are less than the IMAC with the exception of
monitoring wells CCR-U5-4S/D, located at the U5 basin waste boundary.
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• Vanadium concentrations are less than BTVs with the exception of the
August 2018 result from GWA-2BR (0.7 µg/L). This concentration is only
slightly greater than the bedrock BTV and are within the range of
background concentrations previously observed at the Site (Table 3-7).
Therefore, the vanadium concentrations are likely attributed to naturally
occurring levels.
In addition to boron, strontium, sulfate, and manganese, these observations of
TDS, cobalt, iron, and thallium greater than 02L standards, IMACs, and/or BTVs
represent exceedances beyond the U5 basin waste boundary in this area.
Historical groundwater COI data of all wells throughout the Site were reviewed
to consider concentration trends and plume statuses throughout the Site.
Increasing or decreasing concentration trends observed were limited to boron,
strontium, sulfate, and manganese in a small number of wells throughout the
Site. Time -series plots pertaining to these COIs, at select wells in each source
area, were created. The wells selected include representative locations within U5
basin West, in the vicinity of the U5 basin Main Dam, and immediately
downgradient between the U5 basin and the Broad River.
Within the U5 basin West area, time -series plots for boron, strontium, sulfate,
and manganese at U5-2S-SLA/D/BR, CCR-U5-3S/D, CCR-U5-4S/D/BR, and
GWA-2S/BRU/BR were created (Figures 3-48 and 3-49) as representative of
monitoring wells beneath U5 basin West and downgradient of the U5 basin Main
Dam. COI concentrations are generally consistent for all COIs in all wells within
the U5 basin West area. Fluctuating COI concentrations that appear slightly
increasing or decreasing are observed in monitoring wells U5-2D/BR; however,
boron and sulfate concentrations in those wells are less than 02L standards.
Further evaluation of trend data significance will be conducted as additional
groundwater quality data become available.
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4.0 SUMMARY AND CONCLUSIONS
4.1 Groundwater Occurrence and Flow
A common finding from predictive groundwater flow and transport modeling is that
reducing the hydraulic head in the ash basins through decanting will reduce the vertical
and horizontal hydraulic gradients that drive constituent migration, with the greatest
reduction near the dams.
Key conclusions about groundwater flow in the vicinity of the AAB include:
• Groundwater flow from AAB East is constrained predominantly to the vicinity of
the Downstream Dam and downgradient locations to the north between the
basin and the Broad River.
• Groundwater flow from AAB North is constrained predominantly to the vicinity
of the ash storage area and downgradient locations to the north between the ash
storage area and the Broad River.
• Groundwater flow from AAB West is constrained predominantly to the vicinity
of the Upstream Dam, downgradient locations to the northwest between the
basin and Suck Creek, and to the north between AAB West and the ash storage
area.
• Groundwater flow from AAB South is constrained to locations farther north
within the ash basin footprint and downgradient locations to the west between
the basin and Suck Creek.
• Data support that the AAB flow system results in limited downward vertical
migration of COIs into the underlying groundwater upgradient from the
dams. In the vicinity of the Downstream and Upstream Dams, COIs flow
downward out of the AAB and beneath the dams. Downgradient to the north of
the Downstream Dam and to the northwest of the Upstream Dam, hydraulic
gradients cause upward flow. This limits downward vertical migration of COIs
to the area in close proximity to the dams, with the exception of the ash storage
area, where very little saprolite and alluvium exist beneath ash pore water.
Key conclusions about groundwater flow in the vicinity of the U1-4 basin include:
• Groundwater flow from U1-4 basin is constrained predominantly to the vicinity
of the U1-4 basin dam and downgradient locations to the northeast between the
former basin and the Broad River.
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• Data support that the former U1-4 basin flow system results in limited
downward vertical migration of COIs into the underlying groundwater
upgradient from the dam. In the vicinity of the dam, COIs flow downward out of
the basins and under the dam. An alluvial deposit layer located beneath the U1-4
basin dam and along the Broad River shoreline is a primary mechanism for
lateral groundwater movement beneath the U1-4 basin and downgradient to the
adjacent Broad River. This limits downward vertical migration of COIs to the
area in close proximity to the U1-4 basin dam.
Key conclusions about groundwater flow in the vicinity of the U5 basin include:
• Groundwater flow from U5 basin East is constrained predominantly to the
vicinity of the eastern waste boundary, the vicinity of the U5 basin Saddle Dam,
and downgradient locations to the north between the inactive basin and the
Broad River.
• Groundwater flow from U5 basin West is constrained predominantly to the
vicinity of the U5 basin Main Dam and downgradient locations to the north
between the inactive basin and the Broad River.
• Data indicate that the transition zone underlying a thin layer of saprolite beneath
the bottom of ash, U5 basin Main Dam, and U5 basin Saddle Dam in the vicinity
of the U5 basin is a primary mechanism for lateral groundwater flow and
transport north toward the Broad River.
Additional assessment of deep bedrock (approximately 300-400 feet below ground
surface) - in the vicinity of the AAB Upstream and Downstream Dams, former U14
basin dam, and U5 basin Main Dam - is ongoing with the installation of monitoring
wells. Results of the deep bedrock assessment will be included in the 2019 CAP.
4.2 Groundwater Quality
Key conclusions about constituent distribution and plume status in the AAB East area
include:
• Significant downward migration of COIs in groundwater is not occurring
beneath the center of the AAB; rather, the AAB acts as a flow -through basin with
lateral flow through the center of the basin.
• The Downstream Dam acts as a barrier to groundwater migration, with flow and
transport of mobile COIs in groundwater beneath and around the dam.
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• The extent of the groundwater plume in this area is best defined by the strontium
and manganese BTV contours in each flow zone (Figures 3-26 through 3-28 and
Figures 3-32 through 3-34).
• Concentrations of strontium, manganese, iron, and thallium greater than 02L
standards, IMACs, and/or BTVs are observed in wells located near the CSS AAB
compliance boundary to the north of the Downstream Dam.
• Concentrations of strontium, manganese, and iron greater than 02L standards,
IMACs, and/or BTVs are observed in wells located near an off -Site parcel (MW-
20 and GWA-21 well clusters).
• The plume is stable, with the exception of general increasing boron concentration
trends observed in AB-11), GWA-22S, MW-11S, and MW-20D.
• It is anticipated that COI concentrations within and downgradient of the AAB
will decrease over time as basin decanting and closure activities progress.
Key conclusions about constituent distribution and plume status in the AAB North area
include:
• Downward migration of COIs in groundwater is occurring beneath the center of
the ash storage area because the saprolite layer beneath ash in that area is thin.
• The extent of the groundwater plume in this area is best defined by the strontium
and manganese BTV contours in each flow zone (Figures 3-26 through 3-28 and
Figures 3-32 through 3-34).
• Concentrations of boron, strontium, sulfate, manganese, TDS, arsenic, cobalt,
iron, and thallium greater than 02L standards, IMAC, and/or BTVs are reported
in wells located at or beyond the CSS AAB compliance boundary located through
the center of the ash storage area.
• The plume is stable, with the exception of general increasing boron, manganese,
and sulfate concentration trends observed in certain shallow and deep flow zone
wells in the area.
• It is anticipated that COI concentrations within and downgradient of the AAB
and ash storage area will decrease over time as basin decanting and closure
activities progress, including incorporation of the ash storage area.
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Key conclusions about constituent distribution and plume status in the AAB West area
include:
• Significant downward migration of COIs in groundwater is not occurring
beneath the center of the AAB; rather, the AAB acts as a flow -through basin with
lateral flow through the center of the basin.
• The Upstream Dam acts as a barrier to groundwater migration, with flow and
transport of mobile COIs in groundwater beneath and around the dam.
• The extent of the groundwater plume in this area is best defined by the strontium
and manganese BTV contours in each flow zone (Figures 3-26 through 3-28 and
Figures 3-32 through 3-34).
• Suck Creek acts as a local groundwater discharge feature.
• The plume extends northwest to Suck Creek but does not extend to the AAB
compliance boundary.
• The plume is stable, with the exception of general increasing boron and sulfate
concentration trends observed in CCR-9D.
• It is anticipated that COI concentrations within and downgradient of the AAB
will decrease over time as basin decanting and closure activities progress.
Key conclusions about constituent distribution and plume status in the AAB South area
include:
• Significant downward migration of COIs in groundwater is not occurring
beneath the southern region of the AAB; rather, the AAB acts as a flow -through
basin with lateral flow through the center of the basin.
• The extent of the groundwater plume in this area is best defined by the boron
02L standard contours and strontium and manganese BTV contours in each flow
zone (Figures 3-4 through 3-6, Figures 3-26 through 3-28, and Figures 3-32
through 3-34).
• Suck Creek acts as a local groundwater discharge feature.
• The plume extends northwest to Suck Creek but does not extend to the AAB
compliance boundary, with the potential exception of the deep flow zone in an
area northwest of GWA-47D where the compliance boundary is located slightly
east of Suck Creek.
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• The plume is stable, with the exception of general decreasing manganese and
increasing boron concentration trends observed in GWA-47D.
• It is anticipated that COI concentrations within and downgradient of the AAB
will decrease over time as basin decanting and closure activities progress.
Key conclusions about constituent distribution and plume status in the U14 basin area
include:
• Significant downward migration of COIs in groundwater is not occurring
beneath the center of the U1-4 basin; rather, the U14 basin acts as a flow -through
basin with lateral flow through the center of the basin.
• The U1-4 basin dam acts as a barrier to groundwater migration, with flow and
transport of mobile COIs in groundwater beneath the dam.
• The extent of the groundwater plume in this area is best defined by the strontium
BTV contours in each flow zone (Figures 3-26 through 3-28).
• Concentrations of boron, strontium, manganese, TDS, arsenic, cobalt, iron,
thallium, and vanadium greater than 02L standards, IMACs, and/or BTVs are
observed in wells located beyond the U14 basin waste boundary along the
Broad River.
• The plume is stable in this area.
• It is anticipated that COI concentrations within and downgradient of the U1-4
basin will decrease over time since the former U14 ash basin is excavated.
Key conclusions about constituent distribution and plume status in the U5 basin East
area include:
• Downward migration of COIs in groundwater is occurring beneath the northern
portion of the U5 basin East area because the saprolite layer beneath ash in that
area is thin.
• The U5 basin Saddle Dam acts as a barrier to groundwater migration, with flow
and transport of mobile COIs in groundwater beneath the dam.
• A nearly continuous transition zone throughout this area is a primary
mechanism for lateral groundwater flow and transport north toward the Broad
River.
Page 4-5

2018 CAMA Annual Interim Monitoring Report April 30, 2019
Duke Energy Carolinas, LLC - Rogers Energy Complex - Cliffside Steam Station SynTerra
• The extent of the groundwater plume in this area is best defined by the strontium
and manganese BTV contours in each flow zone (Figures 3-26 through 3-28 and
Figures 3-32 through 3-34).
• Concentrations of boron, strontium, sulfate, manganese, pH, TDS, arsenic,
chromium, cobalt, iron, and thallium greater than 02L standards, IMACs, and/or
BTVs are observed in wells located beyond the U5 basin East waste boundary.
• The plume is stable in this area, with the potential exception of cobalt in
monitoring well GWA-41).
• It is anticipated that COI concentrations within and downgradient of the U5
basin will decrease over time following U5 basin closure.
Key conclusions about constituent distribution and plume status in the U5 basin West
area include:
• Downward migration of COIs in groundwater is occurring beneath the northern
portion of the U5 basin West area because the saprolite layer beneath ash in that
area is thin.
• The U5 basin Main Dam acts as a barrier to groundwater migration, with flow
and transport of mobile COIs in groundwater beneath the dam.
• A nearly continuous transition zone throughout this area is a primary
mechanism for lateral groundwater flow and transport north toward the Broad
River.
• The extent of the groundwater plume in this area is best defined by the strontium
and manganese BTV contours in each flow zone (Figures 3-26 through 3-28 and
Figures 3-32 through 3-34).
• Concentrations of boron, strontium, sulfate, manganese, TDS, cobalt, iron, and
thallium greater than 02L standards, IMACs, and/or BTVs are observed in wells
located beyond the U5 basin West waste boundary.
• The plume is generally stable in this area.
• It is anticipated that COI concentrations within and downgradient of the U5
basin will decrease over time following U5 basin closure.
Page 4-6

2018 CAMA Annual Interim Monitoring Report April 30, 2019
Duke Energy Carolinas, LLC - Rogers Energy Complex - Cliffside Steam Station SynTerra
5.0 INTERIM MONITORING PLAN UPDATES
5.1 Optimization of the Monitoring Program
Duke submitted an optimized IMP to NCDEQ on December 15, 2018. NCDEQ
approved the optimized IMP by email on December 21, 2018. The plan recommended
adjusting the well and water quality parameter lists to more efficiently monitor
groundwater conditions at the Site. After additional correspondence and discussion
with NCDEQ, Duke submitted a revised optimized IMP on March 20, 2019 which
NCDEQ approved on April 4, 2019 (Appendix E).
IMP analytical parameters were reduced to include the Site COI list and the federal
CCR Rule Appendix III and Appendix IV parameter lists beginning Quarter 1 of 2019. A
summary of the rationale for reducing the IMP well counts is provided below.
Wells critical to the IMP were identified in the following locations:
• Between CCR source areas and downgradient water supply wells (not applicable
for CSS)
• Between CCR source areas and downgradient surface water bodies
• At the Site compliance boundary to verify plume stability
• At existing plume boundaries to detect plume expansion or contraction
• Along geochemical flow transects to monitor plume stability, support the
geochemical model, and confirm horizontal and vertical distribution trends
The IMP well list was divided into quarterly and semi-annually sampling schedules.
For 2019, Site wells are planned to be sampled in the following manner:
• Background wells - semi-annually
• Peripheral monitoring wells - semi-annually
• Wells along flow transect - semi-annually
• Downgradient wells used in model simulations - semi-annually
• Wells with increasing COI concentrations - quarterly
• Wells upgradient of water supply wells - quarterly
New wells installed as part of the CAMA program will be monitored quarterly for at
least four quarters for the full suite of CAMA parameters listed in the optimized IMP.
Additional voluntary parameters will also be collected to facilitate geochemical
Page 5-1

2018 CAMA Annual Interim Monitoring Report April 30, 2019
Duke Energy Carolinas, LLC - Rogers Energy Complex - Cliffside Steam Station SynTerra
modeling at the Site. After four quarterly events, Duke Energy will re-evaluate the
monitoring requirements for the new wells and submit a recommendation to NCDEQ
regarding future monitoring requirements and revise the IMP if needed.
It is recommended that sampling continue in accordance with the optimized IMP with
the exception of:
• Monitoring well AS-11) where a potential trend of increasing boron
concentrations (Section 3.3.2, AAB North) is noted
• Monitoring wells AS-2S and AS-71) where a potential trend of boron and
manganese concentrations (Section 3.3.2, AAB North) is noted
• Monitoring well CCR-9D where a potential trend of increasing boron and sulfate
concentrations (Section 3.3.2, AAB West) is noted
Due to potential increasing concentration trends, monitoring wells AS-11), AS-2S, AS-
7D, and CCR-91) are recommended for quarterly IMP monitoring in the future. No
additional changes to the optimized 2019 IMP are recommended at this time.
5.2 2019 Monitoring and Reporting Schedule
Duke Energy plans to sample the monitoring well network on a quarterly and semi-
annual basis during 2019 in accordance with the optimized 2019 IMP outlined above.
New wells installed throughout the year are anticipated to be added to the monitoring
network and quarterly sampling program. To maximize data available for evaluation
in the CAP, an initial sample is collected from new wells after development has been
completed and verified (i.e., turbidity <10 NTU 24 hours after
development). Depending on timing of initial sample collection, variances in quarterly
sampling schedule may be requested to avoid collection of auto -correlated data. In
general, the sampling events are anticipated to occur in accordance with the following
schedule:
• Quarter 1 (wells sampled quarterly): January 2019
• Quarter 2 (wells sampled semi-annually and quarterly): April 2019
• Quarter 3 (wells sampled quarterly): July 2019
• Quarter4 (wells sampled semi-annually and quarterly): October 2019
Quarterly, comprehensive data submittals to NCDEQ are occurring in accordance with
the following schedule:
• Quarter 1: March 2019 (January 2019 data)
Page 5-2

2018 CAMA Annual Interim Monitoring Report April 30, 2019
Duke Energy Carolinas, LLC - Rogers Energy Complex - Cliffside Steam Station SynTerra
• Quarter 2: June 2019 (April 2019 data)
• Quarter 3: September 2019 (July 2019 data)
• Quarter 4: December 2019 (October 2019 data)
Data from the 2019 IMP will support ongoing groundwater quality, occurrence, and
flow evaluations pertaining to the Site.
The list of Site -specific COIs for inclusion into the CAPs is currently undergoing review
using the COI management approach presented to the NCDEQ on March 15, 2019.
COIs proposed for management under the CAPs would be based on:
• Comparing constituent concentrations to regulatory standards and/or
background values
• Evaluating each constituent's relative mobility
• Reviewing constituent distribution in groundwater based on geochemical
conditions
• Comparing each constituent's relative concentration observed in ash pore water
to the concentration observed in groundwater
• Evaluating constituent concentration trends over time
The results of this review will be presented in the CAP and may result in proposed
modifications to the monitoring program at that time.
Page 5-3

2018 CAMA Annual Interim Monitoring Report April 30, 2019
Duke Energy Carolinas, LLC - Rogers Energy Complex - Cliffside Steam Station SynTerra
6.0 REFERENCES
Harned, D., and Daniel, C., 1992. The transition zone between bedrock and regolith:
Conduit for contamination. In Daniel, C.C., White, R., and Stone, P., eds.,
Groundwater in the Piedmont, Proceedings of a Conference on Ground Water in
the Piedmont of the Eastern United States, Charlotte, N.C., Oct. 16-18, 1989.
Clemson, SC: Clemson University (336-348).
Duke Energy, June 10, 2015. Low Flow Sampling Plan, Duke Energy Facilities, Ash
Basin Groundwater Assessment Program, North Carolina.
General Assembly of North Carolina, 2014. Coal Ash Management Act of 2014. Senate
Bill 729, Ratified Bill (Session 2013) (SB729).
Graziano, R., Falta, R.W., Ebenhack, J., Yu, R., and Murdoch, L.C., November 2018.
Preliminary Updated Groundwater Flow and Transport Modeling Report for
Cliffside Steam Station, Mooresboro, North Carolina.
HDR. (2015a). Comprehensive Site Assessment Report Cliffside Steam Station Ash
Basin. HDR.
HDR. (2015b). Corrective Action Plan Part 1 Cliffside Steam Station Ash Basin. HDR.
HDR. (2016a). Corrective Action Plan Part 2 Cliffside Steam Station Ash Basin.
HDR. (2016b). Comprehensive Site Assessment Supplement 2 Cliffside Steam Station
Ash Basin. HDR.
Izquierdo, Maria and Querol, X., 2012. Leaching behavior of elements from coal
combustion fly ash: an overview. International Journal of Coal Geology 94 (2012):
(pp. 54-66).
LeGrand, H. (1988). Region 21, Piedmont and Blue Ridge. In: J. Black, J. Rosenshein, P.
Seaber, ed. Geological Society of America, 0-2, (pp. 201-207).
LeGrand, H. (1989). A conceptual model of ground water settings in the Piedmont
region, in groundwater in the Piedmont. In: Daniel C., White, R., Stone, P., ed.
Ground Water in the Piedmont of the Eastern United States (pp. 317-327).
Clemson, SC: Clemson University.
Page 6-1

2018 CAMA Annual Interim Monitoring Report April 30, 2019
Duke Energy Carolinas, LLC - Rogers Energy Complex - Cliffside Steam Station SynTerra
LeGrand, H. E. 2004. A Master Conceptual Model for Hydrogeological Site
Characterization in the Piedmont and Mountain Region of North Carolina, A
Guidance Manual, North Carolina Department of Environment and Natural
Resources Division of Water Quality, Groundwater Section.
Multi -Agency Radiological Laboratory Analytical Protocols Manual (MARLAP), July
2004. MARLAP Manual Volume I: Chapter 8, Radiochemical Data Verification
and Validation.
NCDEQ, 2017. Guidelines for the Investigation and Remediation of Soil and
Groundwater Contamination.
NCDEQ, June 29, 2018. Correspondence to Duke Energy, Subject: 2018 Comprehensive
Site Assessment Update Comments - James E. Rogers Energy Complex.
SynTerra. (2017). Surface Water Sampling to Assess 15A NCAC 2B Compliance for
Implementation of Corrective Action Under 15A NCAC 02L .0106 - Cliffside
Steam Station - March 2017. Mooresboro, NC.
SynTerra. (2018). 2018 Comprehensive Site Assessment Update - Cliffside Steam Station
- January 31, 2018. Mooresboro, NC.
SynTerra. (2019). Ash Basin Pumping Test Report for Cliffside Steam Station - January
2019. Mooresboro, NC.
United States Environmental Protection Agency, September 2011, Data Validation
Standard Operating Procedures for Contract Laboratory Program Routine
Analytical Services Inorganic Analysis.
United States Environmental Protection Agency, January 2017a. National Functional
Guidelines for Organic Superfund Methods Data Review.
United States Environmental Protection Agency, January 2017b. National Functional
Guidelines for Inorganic Superfund Methods Data Review.
United States Environmental Protection Agency, November 2018 (Phase I) and July
2018 (Phase II). Test Methods for Evaluating Solid Waste: Physical/Chemical
Methods (SW-846), Update VI.
Page 6-2

2018 CAMA Annual Interim Monitoring Report April 30, 2019
Duke Energy Carolinas, LLC - Rogers Energy Complex - Cliffside Steam Station SynTerra
FIGURES

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FIGURE 1-1
WINSTONSALEM
SITE LOCATION MAP
synTerra
ASHEVILLE�
2018 CAMAANNUAL INTERIM MONITORING REPORT
CLIFFSIDE STEAM STATION
RUTH
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CLEVELANDS
DUKE ENERGY CAROLINAS, LLC
DUKE
COUNTY
COUNTY
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MOORESBORO, NORTH CAROLINA
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
DRAWN BY: J. KIRTZ DATE: 4/25/2019
PROJECT MANAGER: S. SPINNER CONTOUR INTERVAL: 20 FT
1,000 0 1,000 2,00
ENERGY.
CAROLINAS
GRAPHIC SCALE IN FEET
PHONE [phone]
www.s nterracor .com
CHECKED BY: S. DENEALE MAP DATE: 2016

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ASH BASIN WASTE BOUNDARY
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400 0 400 800
GRAPHIC SCALE IN FEET
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
DRAWN BY: J. KIRTZ DATE: 04/26/2019
PROJECT MANAGER: S. SPINNER
CHECKED BY: S. DENEALE
FOSTER WHEELER INC., JUNE 19, 2015.
SAMPLE LOCATIONS WERE DERIVED FROM VARIOUS SOURCES AND ARE A MIX OF
SURVEYED AND APPROXIMATE LOCATIONS. THEREFORE, SAMPLE LOCATIONS ARE
TO BE DEEMED APPROXIMATE.
SPOIL AREA WAS PREVIOUSLY REFERRED TO AS THE EASTERN ASH STORAGE AREA
BASED ON DATAAND INFORMATION RECEIVED TO DATE, NO ASH IS LOCATED IN THE
SPOIL AREA. THEREFORE, THE WASTE BOUNDARY HAS BEEN REMOVED FROM
AROUND THIS AREA.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY CAROLINAS
AERIAL PHOTOGRAPHY OBTAINED FROM GOGGLE EARTH PRO ON SEPTEMBER 7,
2018. IMAGE COLLECTED ON APRIL 20, 2018.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANE
COORDINATE SYSTEM FIPS 3200 (NAD83).
FIGURE 1-2
SITE MAP WITH MONITORING WELL LOCATIONS
2018 CAMA ANNUAL INTERIM MONITORING REPORT
CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS, LLC
MOORESBORO, NORTH CAROLINA

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0
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0 3 Rp ♦ \ a �� 864-421-9999 573 DUKE POWER ROAD
www.synterracorp.com MOORESBORO, NORTH CAROLINA
o aa° O �° °Q gao ° DRAWN BY: J. CHASTAIN DATE: 04/11/2019
40 CHECKED BY: S. DeNEALE DATE:- FIGURE 3-1
°. b � % o •o a PROJECT MANAGER: S. SPINNER
WATER LEVEL MAP (EAST)
° a ° �� II \ / a ° o�• 8 LAYOUT NAME: ABWL(S) SHALLOW FLOW ZONE
8 ` — ° GRAPHIC SCALE (OCTOBER 22, 2018)
Q �o Q" °°a 200 0 100 200 400 2018 CAMA ANNUAL INTERIM
S40 IN FEET MONITORING REPORT
� ° �• Q g50 O o `$ � m° o LEGEND
y WATER LEVEL IN SHALLOW ZONE (NAVD 88, FEET) — DUKE ENERGY PARCEL LINE (APPROXIMATE)
a °o
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D GROUNDWATER FLOW DIRECTION ASH BASIN WASTE BOUNDARY (APPROXIMATE)
-SHALLOW ZONE ASH STORAGE AREA (APPROXIMATE)
d 719.52 WATER LEVEL IN THE SHALLOW ZONE (NAVD 88, FEET) EFFLUENT CHANNEL (APPROXIMATE AND NON -JURISDICTIONAL)
`���� o a D AB 3SL WELL IN ASH PORE WATER
®ASH BASIN PONDED WATER (APPROXIMATE AND NON-JURIDICTIONAL)
/ O o GWA 51D WELL IN DEEP ZONE I STREAM BY AMEC FOSTER WHEELER
O GWA-2BR WELL IN BEDROCK ZONE 0 WETLAND BY AMEC FOSTER WHEELER
o ° O I lI ° ABMW-05S WELL ABANDONED APPROXIMATE STREAM (AERIAL PHOTOGRAPH & TOPOGRAPHIC MAP BASED)
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0 �
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Do p °d
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d ° � n ♦ Q.
d o
b NOTES:
1. WATER LEVELS COLLECTED BY PACE ANALYTICAL SERVICES, LLC ON OCTOBER 28, 2018.
2. BTP = WATER LEVEL BELOW TOP OF PUMP
41
o J 3. NM = WATER LEVEL NOT MEARURED
4. NOT ALL UTILITIES ARE IDENTIFIED ON THIS DRAWING. THE UTILITIES SHOWN ON THIS DRAWING ARE VISUAL AIDS TO LOCATE THE STREAMS AND WETLANDS IN THE
FIELD. THE HORIZONTAL LOCATION AND VERTICAL LOCATION HAVE NOT BEEN FIELD LOCATED ON ANY UTILITIES AND THE SHOWN LOCATIONS ARE APPROXIMATE.
5. THE TOPOGRAPHY IS BASED ON LIDAR BARE EARTH DATA OBTAINED FROM THE FRIS\NORTH CAROLINA FLOOD RISK INFORMATION SYSTEM AT
http://fris.nc.gov/fris/Download.aspx?FIPS=031&ST=NC&user=General%2OPublic AND A DRAWING TITLED AERIAL TOPOGRAPHIC SURVEY-ALLEN STEAM STATION
6. THE WATERS OF THE US HAVE NOT BEEN APPROVED BY THE US ARMY CORPS OF ENGINEERS AT THE TIME OF THE MAP CREATION. THIS MAP IS NOT TO BE USED FOR
JURISDICTIONAL DETERMINATION PURPOSES. THE WETLANDS AND STREAMS BOUNDARIES WERE OBTAINED FROM AMEC FOSTER WHEELER ENVIRONMENTAL &
INFRASTRUCTURE, INC. NATURAL RESOURCE TECHNICAL REPORT, JUNE 19, 2015.
7. DISPLAYED WATER SUPPLY WELL LOCATIONS REFLECT INFORMATION AVAILABLE UP TO DECEMBER 2017.
a

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0 C,Q� \\ e - • ° ° �" 148 River Street, Suite 220 ROGERS ENERGY COMPLEX
Greenville, South Carolina 29601 (CLIFFSIDE STEAM STATION)
0 3 RO ♦ \ a �� 573 DUKE POWER ROAD
864-421-9999
MOORESBORO, NORTH CAROLINA
www.synterracorp.com
a a °Q ggo o I DRAWN BY: J. CHASTAIN DATE:04/11/2019 FIGURE 3-2
CHECKED BY: DATE: JECT MANAGER: - WATER LEVEL MAP (EAST)
a
AYOOUTNAME: ABWL(D) DEEP FLOW ZONE
GRAPHIC SCALE (OCTOBER 22, 2018)
200 O 100 200 400 2018 CAMA ANNUAL INTERIM
s6o ° P 840 �° 0 (IN FEET) MONITORING REPORT
Q g50 O y �725� WATER LEVEL IN DEEP ZONE (NAVD 88, FEET)
INFERRED WATER LEVEL IN DEEP ZONE (NAVD 88, FEET) — — — — ASH BASIN COMPLIANCE BOUNDARY
GROUNDWATER FLOW DIRECTION ASH BASIN WASTE BOUNDARY (APPROXIMATE)
05 1D WELL ID - DEEP ZONE ASH STORAGE AREA (APPROXIMATE)
WATER LEVEL IN THE DEEP ZONE (NAVD 88, FEET)
d � 754.69 EFFLUENT CHANNEL (APPROXIMATE AND NON -JURISDICTIONAL)
o a D AB 3SL WELL IN ASH PORE WATER
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0 �
° o — SURFACE WATER (AERIAL PHOTOGRAPH & TOPOGRAPHIC MAP BASED)
° 680TOPOGRAPHIC CONTOUR (10' INTERVAL)
TOPOGRAPHIC CONTOUR (2' INTERVAL)
d n ♦ Q.
d o
b NOTES:
1. WATER LEVELS COLLECTED BY PACE ANALYTICAL SERVICES, LLC ON OCTOBER 28, 2018.
4
2. BTP = WATER LEVEL BELOW TOP OF PUMP
o ✓J 3. NM = WATER LEVEL NOT MEARURED
4. NOT ALL UTILITIES ARE IDENTIFIED ON THIS DRAWING. THE UTILITIES SHOWN ON THIS DRAWING ARE VISUAL AIDS TO LOCATE THE STREAMS AND WETLANDS IN THE
FIELD. THE HORIZONTAL LOCATION AND VERTICAL LOCATION HAVE NOT BEEN FIELD LOCATED ON ANY UTILITIES AND THE SHOWN LOCATIONS ARE APPROXIMATE.
5. THE TOPOGRAPHY IS BASED ON LIDAR BARE EARTH DATA OBTAINED FROM THE FRIS\NORTH CAROLINA FLOOD RISK INFORMATION SYSTEM AT
http:Hfris.nc.gov/fris/Download.aspx?FIPS=031&ST=NC&user=General%2OPublic AND A DRAWING TITLED AERIAL TOPOGRAPHIC SURVEY-ALLEN STEAM STATION
6. THE WATERS OF THE US HAVE NOT BEEN APPROVED BY THE US ARMY CORPS OF ENGINEERS AT THE TIME OF THE MAP CREATION. THIS MAP IS NOT TO BE USED FOR
JURISDICTIONAL DETERMINATION PURPOSES. THE WETLANDS AND STREAMS BOUNDARIES WERE OBTAINED FROM AMEC FOSTER WHEELER ENVIRONMENTAL &
INFRASTRUCTURE, INC. NATURAL RESOURCE TECHNICAL REPORT, JUNE 19, 2015.
7. DISPLAYED WATER SUPPLY WELL LOCATIONS REFLECT INFORMATION AVAILABLE UP TO DECEMBER 2017.
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40
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Q o PROJECT MANAGER: - BEDROCK FLOW ZONE
g7o I \ ° \ / p ° d• .•_ 8 LAYOUT NAME: AB WL (B)
ACTIVE BASIN
GRAPHIC SCALE OCTOBER 22, 201)
200 0 100 200 400 2018 CAMA ANNUAL INTERIM
s6o Q ° P s4o 4" °o �q �0 (IN FEET) MONITORING REPORT
g50 O o $ e o LEGEND
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'840
0 4 GROUNDWATER FLOW DIRECTION ASH BASIN WASTE BOUNDARY (APPROXIMATE)
so �\ U5 5BR WELL ID - BEDROCK ZONE ASH STORAGE AREA (APPROXIMATE)
& 699.15 WATER LEVEL IN THE BEDROCK ZONE (NAVD 88, FEET) EFFLUENT CHANNEL (APPROXIMATE AND NON -JURISDICTIONAL)
o D & AB 3SL WELL IN ASH PORE WATER
A� a GWA-35S WELL IN SHALLOW ZONE ® ASH BASIN PONDED WATER (APPROXIMATE AND NON-JURIDICTIONAL)
WELL IN DEEP ZONE 0 STREAM BY AMEC FOSTER WHEELER
0 WETLAND BY AMEC FOSTER WHEELER
° O ° I lI a �I ABMW-05S WELL ABANDONED APPROXIMATE STREAM (AERIAL PHOTOGRAPH & TOPOGRAPHIC MAP BASED)
a 0 WATER SUPPLY WELL (APPROXIMATE)
FLOW DIRECTION
o o — SURFACE WATER (AERIAL PHOTOGRAPH & TOPOGRAPHIC MAP BASED)
.
6so TOPOGRAPHIC CONTOUR (10' INTERVAL)
a TOPOGRAPHIC CONTOUR (2' INTERVAL)
o � °
° o o NOTES:
1. WATER LEVELS COLLECTED BY PACE ANALYTICAL SERVICES, LLC ON OCTOBER 28, 2018.
BTP = WATER LEVEL BELOW TOP OF PUMP
o tiJ 3. NM = WATER LEVEL NOT MEARURED
4. NOT ALL UTILITIES ARE IDENTIFIED ON THIS DRAWING. THE UTILITIES SHOWN ON THIS DRAWING ARE VISUAL AIDS TO LOCATE THE STREAMS AND WETLANDS IN THE
FIELD. THE HORIZONTAL LOCATION AND VERTICAL LOCATION HAVE NOT BEEN FIELD LOCATED ON ANY UTILITIES AND THE SHOWN LOCATIONS ARE APPROXIMATE.
\ o
5. THE TOPOGRAPHY IS BASED ON LIDAR BARE EARTH DATA OBTAINED FROM THE FRIS\NORTH CAROLINA FLOOD RISK INFORMATION SYSTEM AT
http://fris.nc.gov/fris/Download.aspx?FIPS=031&ST=NC&user=General%2OPublic AND A DRAWING TITLED AERIAL TOPOGRAPHIC SURVEY-ALLEN STEAM STATION
Q ° 6. THE WATERS OF THE US HAVE NOT BEEN APPROVED BY THE US ARMY CORPS OF ENGINEERS AT THE TIME OF THE MAP CREATION. THIS MAP IS NOT TO BE USED FOR
JURISDICTIONAL DETERMINATION PURPOSES. THE WETLANDS AND STREAMS BOUNDARIES WERE OBTAINED FROM AMEC FOSTER WHEELER ENVIRONMENTAL &
INFRASTRUCTURE, INC. NATURAL RESOURCE TECHNICAL REPORT, JUNE 19, 2015.
7. DISPLAYED WATER SUPPLY WELL LOCATIONS REFLECT INFORMATION AVAILABLE UP TO DECEMBER 2017.
a
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CARO L I NAS
148 River Street, Suite 220 ROGERS ENERGY COMPLEX
CLIFFSIDE STEAM STATION
/ ____ -_ -__ - 4 „� � ry _ so° I �° ^�°• Greenville, South Carolina 29601 ()
864-421-9999 573 DUKE POWER ROAD
www.synterracorp.com MOORESBORO, NORTH CAROLINA
DRAWN BY. J. CHASTAIN DATE.04/24/2019 FIGURE 3-4
CHECKED BY: S. DeNEALE I DATE:04/26/2019 WATER LEVEL MAP (WEST)
PROJECT MANAGER: S. SPINNER
b o o a a°.� °9 Q° `b $ryo LAYOUT NAME: IAB(S) SHALLOW FLOW ZONE
b GRAPHIC SCALE (OCTOBER 22, 2018)
200 0 100 200 400 2018 CAMA ANNUAL INTERIM TI
e d
v o ° ►o 0
MONITORING REPORT
(IN FEET)
1 a.
LEGEND
WATER LEVEL IN SHALLOW ZONE (NAND 8$ FEET) DUKE ENERGY PARCEL LINE (APPROXIMATE)
F3INFERRED WATER LEVEL IN SHALLOW ZONE (NAVD 88, FEET) — ASH BASIN COMPLIANCE BOUNDARY
U o GROUNDWATER FLOW DIRECTION ASH BASIN WASTE BOUNDARY (APPROXIMATE)
WELL ID -SHALLOW ZONE ASH STORAGE AREA (APPROXIMATE)
WATER LEVEL IN THE SHALLOW ZONE (NAVD 88, FEET)
. , EFFLUENT CHANNEL (APPROXIMATE AND NON -JURISDICTIONAL)
AB-3SL WELL IN ASH PORE WATER
ASH BASIN PONDED WATER (APPROXIMATE AND NON-JURIDICTIONAL)
GWA 517D WELL IN DEEP ZONE 0 STREAM BY AMEC FOSTER WHEELER
— <\\� r �� i a ° Q • GWA-2BR WELL IN BEDROCK ZONE
0 WETLAND BY AMEC FOSTER WHEELER
ABMW-05S WELL ABANDONED
APPROXIMATE STREAM (AERIAL PHOTOGRAPH & TOPOGRAPHIC MAP BASED)
WATER SUPPLY WELL (APPROXIMATE)
FLOW DIRECTION
SURFACE WATER (AERIAL PHOTOGRAPH & TOPOGRAPHIC MAP BASED)
\ ° sso TOPOGRAPHIC CONTOUR (10' INTERVAL)
TOPOGRAPHIC CONTOUR (2INTERVAL)
/
' e NOTES:
1. WATER LEVELS COLLECTED BY PACE ANALYTICAL SERVICES, LLC ON OCTOBER 28, 2018.
=WATER LEVEL BELOW TOP OF PUMP
7 3. NM =WATER LEVEL NOT MEARURED
UTILITIES ARE IDENTIFIED ON THIS DRAWING. THE UTILITIES SHOWN ON THIS DRAWING ARE VISUAL AIDS TO LOCATE THE STREAMS AND WETLANDS IN THE
——_--------_—_—_—_ " i O FIELD. THE HORIZONTAL LOCATION AND VERTICAL LOCATION HAVE NOT BEEN FIELD LOCATED ON ANY UTILITIES AND THE SHOWN LOCATIONS ARE APPROXIMATE.
TOPOGRAPHY IS BASED ON LIDAR BARE EARTH DATA OBTAINED FROM THE FRIS\NORTH CAROLINA FLOOD RISK INFORMATION SYSTEM AT
\ `\ http://fris.nc.gov/fris/Download.aspx?FIPS=031&ST=NC&user=General%2OPublicANDADRAWING TITLED AERIAL TOPOGRAPHIC SURVEY-ALLEN STEAM STATION
WATERS OF THE US HAVE NOT BEEN APPROVED BY THE US ARMY CORPS OF ENGINEERS AT THE TIME OF THE MAP CREATION. THIS MAP IS NOT TO BE USED FOR
■ JURISDICTIONAL DETERMINATION PURPOSES. THE WETLANDS AND STREAMS BOUNDARIES WERE OBTAINED FROM AMEC FOSTER WHEELER ENVIRONMENTAL &
s° INFRASTRUCTURE, INC. NATURAL RESOURCE TECHNICAL REPORT, JUNE 19, 2015.
0 7. DISPLAYED WATER SUPPLY WELL LOCATIONS REFLECT INFORMATION AVAILABLE UP TO DECEMBER 2017.
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CAROLINAS
148 River Street, Suite 220 ROGERS ENERGY COMPLEX
CLIFFSIDE STEAM STATION
/ ____ -_ -__ - 4 „� � ry _ ao° I °° ^°°• Greenville, South Carolina 29601 ()
864-421-9999 573 DUKE POWER ROAD
www.synterracorp.com MOORESBORO, NORTH CAROLINA
CHASTAIN :::[DATE: 04/26/2019 FIGURE 3-6
DeNEALE DATE:04/26/2019 WATER LEVEL MAP (WEST)
SPINNER
o o_ d ° ti° PROJECT MANAGER: S.
IAB(B) BEDROCK FLOW ZONE
OCTOBER 22
GRAPHIC SCALE ( , 2018 )
° 0 100 200 400 �° - - a o �,p U ► 2018 CAMA ANNUAL INTERIM
0 0 ° 0 200
/'''�\\\�O ego O , a o ° Q ° (IN FEET) MONITORING REPORT
a.
I d o b a LEGEND
\`\� \ \ 1 ❑ i 1 4 q \�:\ no o C7 ° D �730� WATER LEVEL IN BEDROCK ZONE (NAND 88, FEET) DUKE ENERGY PARCEL LINE (APPROXIMATE)
��\\\ ,%%'> e� o a fl ca �p a , `. INFERRED WATER LEVEL IN BEDROCK ZONE (NAVD 88, FEET) — ASH BASIN COMPLIANCE BOUNDARY
w\ \ [ low - -� a
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\� _ \_ %''o a U5 5BR WELL ID -BEDROCK ZONE ASH STORAGE AREA (APPROXIMATE)
` -��\\\ ;i %.' o a° 699.15 WATER LEVEL IN THE BEDROCK ZONE (NAVD 88, FEET) EFFLUENT CHANNEL (APPROXIMATE AND NON -JURISDICTIONAL)
. \` <, / /! �� 0 9 AB 3SL WELL IN ASH PORE WATER
®ASH BASIN PONDED WATER (APPROXIMATE AND NON-JURIDICTIONAL)
Lj
GWA-35S WELL IN SHALLOW ZONE 0 STREAM BY AMEC FOSTER WHEELER
- < > r �� i a ° Q • GWA 51D WELL IN DEEP ZONE
0 WETLAND BY AMEC FOSTER WHEELER
C` Z� o ABMW-05S WELL ABANDONED
J �, APPROXIMATE STREAM (AERIAL PHOTOGRAPH &TOPOGRAPHIC MAP BASED)
/ �' � WATER SUPPLY WELL (APPROXIMATE)
8 ®� FLOW DIRECTION
SURFACE WATER (AERIAL PHOTOGRAPH & TOPOGRAPHIC MAP BASED)
\ ° sso TOPOGRAPHIC CONTOUR (10' INTERVAL)
TOPOGRAPHIC CONTOUR (2' INTERVAL)
/
' e NOTES:
1. WATER LEVELS COLLECTED BY PACE ANALYTICAL SERVICES, LLC ON OCTOBER 28, 2018.
///_____` � 2. BTP =WATER LEVEL BELOW TOP OF PUMP
- 3. NM =WATER LEVEL NOT MEARURED
/� 4. NOT ALL UTILITIES ARE IDENTIFIED ON THIS DRAWING. THE UTILITIES SHOWN ON THIS DRAWING ARE VISUAL AIDS TO LOCATE THE STREAMS AND WETLANDS IN THE
--_--------_-_-_-_ " i O FIELD. THE HORIZONTAL LOCATION AND VERTICAL LOCATION HAVE NOT BEEN FIELD LOCATED ON ANY UTILITIES AND THE SHOWN LOCATIONS ARE APPROXIMATE.
. \\\ 5. THE TOPOGRAPHY IS BASED ON LIDAR BARE EARTH DATA OBTAINED FROM THE FRIS\NORTH CAROLINA FLOOD RISK INFORMATION SYSTEM AT
\ `\ http://fris.nc.gov/fris/Download.aspx?FIPS=031&ST=NC&user=General%2OPublicANDADRAWING TITLED AERIAL TOPOGRAPHIC SURVEY-ALLEN STEAM STATION
° o 6. THE WATERS OF THE US HAVE NOT BEEN APPROVED BY THE US ARMY CORPS OF ENGINEERS AT THE TIME OF THE MAP CREATION. THIS MAP IS NOT TO BE USED FOR
■ JURISDICTIONAL DETERMINATION PURPOSES. THE WETLANDS AND STREAMS BOUNDARIES WERE OBTAINED FROM AMEC FOSTER WHEELER ENVIRONMENTAL &
s° INFRASTRUCTURE, INC. NATURAL RESOURCE TECHNICAL REPORT, JUNE 19, 2015.
0 7. DISPLAYED WATER SUPPLY WELL LOCATIONS REFLECT INFORMATION AVAILABLE UP TO DECEMBER 2017.
o°

ma
c
0
c�
m
co
760 1
1 /1 /2015
780
c
0
cts
a�
w 760
m
N
J
L
cv
740 1
1 /1 /2015
BG-1 Well Cluster (Upgradient)
BG-1S
o— BG-1 D
BG-1 BR
BG-1 BRA
1/1/2016 1/1/2017 1/1/2018
Date
AB-4 Well Cluster (Within AAB)
o— AB-4S
AB-4SL
AB-4D
0 AB-4BR
1 /1 /2019
1 /1 /2016 1 /1 /2017 1 /1 /2018 1 /1 /2019
Date
Notes:
1. Hydrographs are drawn from water levels measured in the field at each monitoring well during routine monitoring events.
2. All water levels are in feet (ft), NAVD 88.
3. Water levels collected at the following monitoring wells on the following monitoring dates are considered anomalous and should not
be considered for purposes of water elevation trend evaluation:
• AS-713RA (5/11/2017)
• AS-713R (6/24/2015)
• AB-3SL (11/13/2017)
• AB-3BRUA (5/11/2017)
-11
780
760
c
0
740
m
w 720
a�
a�
L 700
a�
640
AB-3 Well Cluster (Within AAB)
❑ -0
r'
A AB-3S
— —� — AB-3SL
AB-31
AB-3BRU
— —o— — AB-3BRUA
• AB-3BR
1 /1 /2015 1 /1 /2016 1 /1 /2017 1 /1 /2018 1 /1 /2019
Date
720
710
700
690
c
680
CU
670
Lu
660
J 650
L
cv 640
630
620
610
1 /1 /2015
116rip
synTerra
DUKE
ENERGY.
CAROLINAS
AS-7 Well Cluster (Within Ash Storage Area)
--- O --- O —0 - 0------o---0
—
—O -a - p
I
I
I
I
I
• AS-7S
AS-7D
— —o— — AS-7BR
AS-7BRA
1 /1 /2016
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE: [phone]
www.synterracorp.com
1 /1 /2017 1 /1 /2018 1 /1 /2019
Date
DRAWN BY: E.KINSEY DATE: 4/15/2019
PROJECTIVIANAGER: S.SPINNER
CHECKED BY: S. DENEALE
FIGURE 3-7
HYDROGRAPHS — AAB — UPGRADIENT AND
WITHIN AAB AND ASH STORAGE AREA
2018 CAMA ANNUAL
INTERIM MONITORING REPORT
CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS, LLC
MOORESBORO, NORTH CAROLINA

AB-2 Well Cluster (Within AAB Upstream Dam)
AB-1 Well Cluster (Within AAB Downstream Dam)
760
740
P
o- AB-2S
AB-2D
El- fl --0
— � � � � A
• AB-26R0
— — -❑ -�- — —
a
o
— —o- — A13-1 S
76
❑ 0-❑ ❑ p-
CU
— v — AB-1D
p 0 AB-1 BRO
740
720
I
Not Applicable
I
o-
720
700
1 /1 /2015
1 /1 /2016 1 / 1 /2017 1 /1 /2018 1 / 1 /2019
1 / 1 /2015
1 /1 /2016 1 /1 /2017 1 /1 /2018 1 / 1 /2019
Date
Date
GWA-20
Well Cluster (Downgradient of AAB Upstream Dam)
GWA-21
Well Cluster (Downgradient of AAB Downstream Dam)
AS-2 Well Cluster (Downgradient of Ash Storage Area)
740
680
680
o- GWA-20S
GWA-20D
p, El- —
— ❑ ❑ — — � - —� ❑— -0 —❑-- ❑\ —❑
• GWA-20BR
670
I
o
O
/
O
M
>
-
> 660
LLJ 730
a)
W 660
a)
i ��
— — �� -�% \ -- v
-- _—� — v v— v b
aD
w
5
>
a)
❑ _
— o *--a
J
-j 650
I
M
io
co
o- AS-2S
— —o- — GWA-21 S
— — AS-2D
• AS-2BR
�-V o
GWA-21 BRU
• GWA-21BR
640
720
640
630
1 /1 /2015
1 /1 /2016 1 /1 /2017 1 /1 /2018 1 /1 /2019
1 /1 /2015
1 /1 /2016 1 /1 /2017 1 /1 /2018 1 /1 /2019
1 /1 /2015
1 /1 /2016 1 /1 /2017 1 /1 /2018 1 /1 /2019
Date
Date
Date
Notes:
148 RIVER STREET, SUITE 220
1. Hydrographs are drawn from water levels measured In the field at each monitoring well during routine monitoring events.
161P
GREENVILLE, SOUTH CAROLINA 29601
FIGURE 3-8
2. All water levels are in feet (ft), NAVD 88.
PHONE:[phone]
HYDROGRAPHS — AAB — WITHIN
3. Water levels collected at the following monitoring wells on the following monitoring dates are considered anomalous and should not be
AAB DAMS AND DOWNGRADIENT
considered for purposes of water elevation trend evaluation:
synTerra
www.synterracorp.com
2018 CAMA ANNUAL
• A13-1D (12/19/2016)
INTERIM MONITORING REPORT
DUKE
DRAWN BY: E.KINSEY DATE: 4/15/2019
• A13-2D (6/16/2016 and 8/08/2017)
• AS-2D (6/24/2015)
CLIFFSIDE STEAM STATION
• GWA-21BR (6/24/2015)
19� ENERGY.
PROJECTMANAGER: S.SPINNER
CHECKED BY: S. DENEALE
DUKE ENERGY CAROLINAS, LLC
MOORESBORO, NORTH CAROLINA
CAROLI NA5

GWA-14 Well Cluster (Upgradient)
690
❑ — GWA-14S
❑ GWA-14D
• GWA-14BR
r
o
�
\
\
a�
\\
W
680
Not Applicable
m
M
670
1/1/2015
1/1/2016 1/1/2017 1/1/2018 1/1/2019
Date
GWA-11 Well Cluster (Downgradient of U1-4 Basin)
I13-3 Well Cluster (Downgradient of U1-4 Basin)
670
700
GWA-11S
v — I13-3S
• GWA-11 BRIJ
• IB-3D
690
g
0
o
I
>
; 680
a�
LJJ 660
— -\
o
W
f—
>
\\
N
>
—
J
L
J 670
L
M
i
660
650
1 /1 /2016 1 /1 /2017 1 /1 /2018 1 /1 /2019
1 /1 /2015
650
1 /1 /2015
1 /1 /2016 1 /1 /2017 1 /1 /2018
Date
Date
Notes:
148 RIVER STREET, SUITE 220
1. Hydrographs are drawn from water levels measured in the field at each monitoring well during routine monitoring events.
161p
GREENVILLE, SOUTH CAROLINA 29601
FIGURE 3-9
2. All water levels are in feet (ft), NAVD 88.
PHONE:[phone]
HYDROGRAPHS — U1-4 BASIN
3. Water levels collected at the following monitoring wells on the following monitoring dates are considered anomalous and should not
be considered for urposes of water elevation trend evaluation:
purposes
Terra
www.s nterracor .com
www.synterracorp.com
2018 CAMA ANNUAL
• IB-3S (12/19/2016)
INTERIM MONITORING REPORT
BY: E.KINSEY DATE: 4/15/2019
CLIFFSIDE STEAM STATION
DUKEDRAWN
19�DI KE
PROJECTIVIANAGER: S.SPINNER
DUKE ENERGY CAROLINAS, LLC
ENERGY®
CHECKED BY: S. DENEALE
MOORESBORO, NORTH CAROLINA
CAROLI NAS

GWA-30 Well
Cluster (Upgradient)
U5-2 Well Cluster (Within
U5 Basin)
790
750
- GWA-30S
o- - U5-2S-SLA
� - GWA-30BRU
� - U5-2D
• GWA-30BR
U5-2BR
0
\ /
0
740
M
\
co
w
LU
❑
780
❑
w
❑�
/
>
(1)
❑�
>
\
(1)
730
co
CU
• -------------------------------- -
1
720
1/1/2015
1/1/2016
1/1/2017 1/1/2018 1/1/2019
1/1/2015
1/1/2016 1/1/2017
1/1/2018 1/1/2019
Date
Date
Notes:
1. Hydrographs are drawn from water levels measured in the field at each monitoring well during routine monitoring events.
16.7
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
FIGURE 3-10
2.
All water levels are in feet (ft), NAVD 88.
PHONE:[phone]
HYDROGRAPHS — US BASIN — UPGRADIENT
AND WITHIN US BASIN
synTerra
www.synterracorp.com
2018 CAMA ANNUAL
INTERIM MONITORING REPORT
��RE
DRAWN BY: E.KINSEY DATE: 4/15/2019
PROJECTIVIANAGER: S.SPINNER
CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS, LLC
ENERGY.
CHECKED BY: S. DENEALE
MOORESBORO, NORTH CAROLINA
CAROLI NA5

740
730
720
710
c
700
690
W
680
J 670
CU
660
650
640
630
U5-4 Well Cluster (Within U5 Basin Main Dam)
-- ♦-- U54S
o- U5-4D
• U5-4BR
U5-46RA
1 /1 /2015 1 /1 /2016 1 /1 /2017 1 /1 /2018 1 /1 /2019
Date
GWA-2 Well Cluster (Downgradient of U5 Basin Main Dam)
.:R
c
0
a�
LU 670
m
m
J
N
660
1 /1 /2015
o- GWA-2S
— — GWA-213RU
• GWA-2BR
i
r
1 /1 /2016 1 /1 /2017 1 /1 /2018 1 /1 /2019
Date
Notes:
1. Hydrographs are drawn from water levels measured in the field at each monitoring well during routine monitoring events.
2. All water levels are in feet (ft), NAVD 88.
3. Water levels collected at the following monitoring wells on the following monitoring dates are considered anomalous and should not
be considered for purposes of water elevation trend evaluation:
• U5-41D (6/24/2015, 01/26/2018,and 04/26/2018)
• 1-15-61D (6/16/2016)
740
p 730
a�
Lu
N
a>
J
a`) 720
W,
710 4-
1 /1 /2015
U5-6 Well Cluster (Within U5 Basin Saddle Dam)
—v - U5-6S
0— U5-6D
1 /1 /2016 1 /1 /2017 1 /1 /2018 1 /1 /2019
Date
GWA-4 Well Cluster (Downgradient of U5 Basin Saddle Dam)
720
700 700 1
1 /1 /2015
16,
synTerra
/ DUKE
ENERGY.
CAROLI NAS
GWA-4S
• GWA-4D
1 /1 /2016 1 /1 /2017 1 /1 /2018 1 /1 /2019
Date
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE: [phone]
www.synterracorp.com
DRAWN BY: E.KINSEY DATE: 4/15/2019
PROJECTIVIANAGER: S.SPINNER
CHECKED BY: S. DENEALE
FIGURE 3-11
HYDROGRAPHS — US BASIN — WITHIN
US BASIN DAMS AND DOWNGRADIENT
2018 CAMA ANNUAL
INTERIM MONITORNIG REPORT
CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS, LLC
MOORESBORO, NORTH CAROLINA

', ? 1 I P i � a" r 1 Main 1"/!' d 1 Broad d
Broad 1 ! r 1 I
River L 4 I r ] II T it r'.! Dam River
1' 1 1 r 1 r P I I pllr rri 1 rr rr 't Ash storage #.¢# f t
111111 1 1!, {} 1 �r P I 1 I p I rr it r 1r r d'F areaa.r•r!
Irr1 t t
Z Saddle
1t i. 1 Former units i- ' i i t
Dam ��.. +.1 i 1 r 1
r r r t r ri i r t
1 1 ! t ., f r l --
r ash basin i �! 1 j 1 } r `it�� ,y..w. i '4 1-S i' `� 19 11 1 11
1 1 t l i TI i Sl } 7' rl N
. 1
1, , 1 f 1} 1� 1} r I r I .I t}�� 1 1 �,� •,:., 'v � �. f �, i 1}
.;;4 : 1 „, i 1 r i� 1 tlf'f}ff t11� ti } 1 r r r T P rrPr r r1 jrl} j11t rl�r.. r�: i i }, ', �.. , '� 't �;�� , • 'r i 4'@ , 1 � �
j' ip� gt r 1r r i I ri Irf 1 i r f �`. _ti i 11 1rF�1 t
,
i
} 1 1 1 !tJ tPe 1 I 1 i r i t r P }} } r t e
Unit sinactive
} 1 1 1} 1 f 1 1 ash basin L} t f } i} }� ri I t .•1 —A Downstream
,1 1j t 1 r ] I f f� } }' }� '• �t . '. Dam I t.
`- - I r
11�1}t}��i�itiii1tlrr1 l
r]rI�I I T� �.�-=-����'����`� �t�t t �t� �; f�i,rrrr���r������ ��. �. �^_oar,, `� �-•,-� � �,.
Main 11 1 j11tr.rrl.r r T I SAck� - �.� �. i tit jrlt:'. rlpJ" .R•. 4 — �� �.�
r 1 1 r. r I Ir �k
Dam P,r1 j j1 jr 1] ;rtti r r p r ��� ,�—Y --'`�• �� r 1 I 1 i�1t ������� �`��, _ y --
\Active � __'�_,�'�•��,�°� ,� •� � —. � -
r
ash basin � � «� '� � - -. ••
I i � l r i r r r + F •� � -� �" � � �� � ­7
�� � � � . P P r 1 \ \ � 1 r r �, r tT Pip � 1 !� - � i � � •. k _.,�'C •� • � � � .. �' _, -- --, �. , � '` �
1J t f�Ir� f f r ltTij p pI per I P r r� �— —�� a fi
—7-
y
°� '� � \ r � •� °� °� 'ti .cam
Notes: Velocity Magnitudes in feet per day (ft/day).
Velocity vectors are in three dimensions.
Velocity vector directions shown as black arrows.
Velocity vectors on figure are displayed for flow and transport model Layer 15 (Transition Zone)
Source: Preliminary Updated Groundwater Flow and Transport Modeling Report for Cliffside Steam Station, Mooresboro, NC (Graziano, et al., November 2018)
LEGEND 0 - 0.001 ft/day
0.001 - 0.005 ft/day
0.05 - 0.1 ft da
/ Y
0.1 - 0.5 ft/day
1P
synTerra
148 RIVER STREET, SUITE 220
PHONE:864-4O-9999 OLINA29601
PHONE: [phone]
FIGURE 3-12
FLOW VELOCITY VECTORS AND
MAGNITUDES IN TRANSITION ZONE
0.005
- 0.01 ft/day
0.5 - 1.0 ft/day
www.synterracorp.com
2018 CAMA ANNUAL
INTERIM MONITORING REPORT
0.01 -
0.05 ft/day
1+ ft/day
'If-S DUKE
ENERGY
DRAWN BY: J. EBENHACK DATE: 4/11/2019
PROJECT MANAGER: S. SPINNER
CHECKED BY: S.DENEALE
CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS, LLC
CAROLINAS
MOORESBORO, NORTH CAROLINA

•, - - � L �� ,` � � r � ] 1 � i r-°..11"•' ''t !!,1
Broad, " ] i �ti� ! ! Main Bro d d !
t 1 1 ] 1 I �!t !, f a ! Dam
! River i !. ! ! ! ! !! ! 1_ l.Rlver 1 1 1 1 1 ! 1
1 , 1
storage Ash
!111l11 !1 1!! t y r r r 1 r 1 P 1Prl rrr ryrl rr r Jtl�llrll r area ! !>>; lil ! ! 1�11}1111,1 lei,=.+•!• • +. • r t r
!1 !1 ! 1 ; �¢� ] I ,P r Tr Tr,>'<<.y ! I ! +1°; r, •�r�. t f � r
L�i1 it rr r r r . , b r<+ •!. Sae ! e.': .<,, a . �, , -,' °•;•. t ., ' T tt i t t tr r P r � t t yr T
Dam Former Units 1-4 f ]j r r r r r , ) ; 1< a 1< `. • .. °± ' I ° t 1 r
•s� ���� tit \ ash basin J �jj r t i 1rr1 y y Pr r �, r. `• . t t t ti i t r r .:
Stet tt�t i 1 1 t�ti ��' i r! ,rj] Ij y
1�yyytrl rIII,r;ttttt��1t; t 1 1 rTrTrrrrrr 11'JI;ii;';' r,r.r r 1- • , ,r) Ir'I �; t t t 1 r ! r
r r it t o� -R�-'rT�t:�,tr1r ttt, t t r 1 k s
r y %tt �R�1 t t t r r r upstream rrrrrr rrrt! tt11rrr rt' }`j1�ti �~ a.. ••_ �rttrrrt�titi� 1 t t P _ t r 1 1 '
�l �tttt yj t tit r Dam 1.11111rI!t� �t 1 rr1�`
tt ; It i t p 1 t I t 1 Unit 5 inactive r f r7rp tit 1jfS �t �tT fist t,'4,• ` ••`�° J r 1 J f s i t t l t t t 1 ash basin P f�1r t t t i i t t , 7 1 ', s ,r Downstream t j
�rr�rrt tt'it�t`t ; �; .tit�ri�rr ]r r ] , 1 P��f ��-` ��, �`�� 1��1�t � q" `;—� }}• ••f'..TS,R�1,, Dam
r t ittttt111 ttttirryrrrrrrl P ] j \�; t tt t`� err rrtt'rrrr rt9. •• .• � � ��` � R • _y � ,s J . _ r ' l�
p— •� t t [ I
Main t T t 1 1 1 r y+ P f Sy+ck, - �;`• —`�' t t F P 1-
i 1 1 r T t t r <e • •. ti .�� •.. '-
Dam r- 1rrrt Tr%tr,S;rf ]PPr r�1c� �°g �� �_"•t•4tt tttttrlPPi'i Pft1 itrT*� ���� ����� _ "_ "�
f Pr]1 r rrr rrr!'T� �1 rr j I r , i ,-�,rr'" .��` •�� �~�� '~• ' — -'
I r j r I a✓' t Active ti
ash basin l d • ti ., r
J J'A %% % P r � � t r �' P i %i' ji r 9. i � rr'` ,'� K .,S � •. ti � `, `.'` � '` °_ � � --+ �• � ~ i
r� jjr �� r fijjjrPltjl 173• .�� �• a .�`� ti r ti I ti
r,t
1 �1�t�T 7 ?t
� � —. —. �. —. —. —. —. �, � •tea._ �~- ~ •. •. ,'''. '� •� \ � ti 1 •.. '` ti 1. .. a -a � � �, y
�. _y r r y tin �. • •� T� 1 •� e� �_ •� � ` \ \ x. 1 1 •� 1 'n. .. 0. • -.. �. �. � •'F
Notes: Velocity Magnitudes in feet per day (ft/day).
Velocity vectors are in three dimensions.
Velocity vector directions shown as black arrows.
Velocity vectors on figure are displayed for flow and transport model Layer 16 (Transition Zone/Upper Fractured Bedrock)
Source: Preliminary Updated Groundwater Flow and Transport Modeling Report for Cliffside Steam Station, Mooresboro, NC (Graziano, et al., November 2018)
LEGEND N0 - 0.001 ft/day
0.05 - 0.1 ft da
/ y
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
FIGURE 3-13
FLOW VELOCITY VECTORS AND
N0.001
- 0.005 ft/day
0.1 - 0.5 ft/day
synTerra
PHONE: [phone]
MAGNITUDES IN TRANSITION
.
wwwsy me rra co rp. co m
ZONE/UPPER FRACTURED BEDROCK
0.005
- 0.01 ft/day
0.5 - 1.0 ft/day
2018 CAMA ANNUALINTERIM
0.01 -
0.05 ft/day
1+ ft/day
�' DUKE
CK DATE: 4/11/2019
DRAWN BY: J. PROJECT MANAGGER:ER:EBENSS.
MONITORING REPORT
CLIFFSIDE STEAM STATION
ENERGY
.SPINNER
CHECKED BY: S. DENEALE
DUKE ENERGY CAROLINAS, LLC
CAROLINAS
MOORESBORO, NORTH CAROLINA

Broad L "g' ] P �•L i 1 �! ! Main —
t ] ] P f11 •} •` 1 1 Dam 1 1 River
1 Rives -, L es• r 1 , ] ] f jT t r jrr*.1 4'�dv S 1 i
1 1 1 y, �% v, t 1 1 1 r r l P f r i P . If 1! 1 Ash storage
1� 1�111yj y�lis+1-T�sttT,L l r; rldl! 11 ! area 1'1 ,' 1<11 j dl j.•'b :._..4,. , ; t t r } - T
r�r•+` r
Saddle r T
1:1'1111.i. � r l I l rf ;1r1 .y r/yj 1 1 �
%]7 ,.*, rr r ; ,'P-r .�+ ! 1 q41, 1t11, ri t r 1 t 1 1 r r.
'` • j •� Former Units 1-4 / p` rT , ° rlq j P rP p •,d, y;d. • i ' I' l 1 1 1 1 t P r
1< Z4 Dam ` ash basin p
, .9 r r f' ,I ,•
rr'ir f, �' t '1. tt I t r] 1i ti rt tr 1 1 t f f t r r
t.1 , �t r i t 11 f• > i p f 4 1 tit l i + 1 i t r I t i riri t i t t f 1 1
irlri t 1 � t >• � r r
t�� 1 tiltt ttil titlt�l �I t 1 r r r 1 'tl•1rPrPPrr1 tt�lt�i�itt gs',',Pr]Prii It � 1 11t�1ttT 1r�jrtT S rjtr]rltittl
T' T it .1 tt' ttil 1� t 1 1 i l r prlr tt tPt11t ,rrt rrlr : 1T t� tt ttrrtTri 1 I r 1r t St 1 1 S r 1 j r
t �a r r ,r; t it Z ti P s rtlrr t t 1 1 ^ P - 1
t ti rT,,It t11t t t r 1 Upstream 1rr111rrPt 'Itlril..Pr1s Zt t }, ,' its 1 r r �"r� �� i 1 1
Dam ] rrrril�� tl r rr 1 tt t tt t `.,�� •, . , ` ' 1 f 1 " 1 t
t 1t S ji 1 it i t 1 t Unit5inactive 1 f .7rITp .. i 1 ti t It IT i`�.<v<'••�� :-�- :
j t 1 1 l "\ S t t 1 1 Downstream T 1
1 irttrirtyll 1 1 17rr ash basin 1 t fllfa�rPs ilttt ttt �0.. Pr TTt it+ •-�•��. f Dam
P i t 1 t 1 1 1 % y r r 1 S 5 • a .s r % l • r
rrli 1 tr t It t tt Iltt rr 1 rr r ] � P ��,�.�� �, � •� �, t t � ,�� , • t ttq< �• �
r 1 r t l t �1 tT r rr r 1 P ' i T � 1 1�4 • ' •6 R� �' "`> ��'� � � l � f -' r � .. �
t f 1 r , r ✓
Main ittt r 1T iirl rrrr r 11 P 0.•• r � t Ittt tt t 1 r 1r 1 1111 prTtrt•`,.
1 1 t r 1 t s ck �=- x
Dam r i t l r t r I P Cr �Tc r f+ Y ~� t t I P l, r t P • �' _ '" J of
r] r r r r r11lt4t, r r � r f � 0. �� t l r.rp ] Pitti itT�:'{�
rg' Active
'ter r , I t f y ^� `�~ y~ • c{ n
ash basin C, A
ti
r � � f � 1 f �' -r. � .� �'— � '` � b • —. ,. � �
� _,, r P r l r Z ti t f r �, � �f j 1 r 1 1 r �, .� 4� � �. _r'• - .' ti_� � � �
. ��. 1' f 1 11 � � t S �, �' r �. sf f 11. r r p /",�, f�fr < .� •_'• � ` '— � � ; �- "� `,_ P r � ` -- _ _ -... � � � �
/ r -• �" p ] fP \ \ , ,• r ,t �; �' lf1�'i�j Tr rP f _ _• �, _ �`._ � -•_ �-° � -, �
��+ � t r % �� � r � `- �r r/�f' j _'�••,� �'� �t�~ ~• '•" " ���~ �~ 4 l ~ � -- �, f `' �� � � '• r '� d f d
�.'-� �� 1 ] f r � \ � t _' �_• `'`" � �r �-'` .�'� yr y"11 � � 1. .��� � � � �, _. Jw `. r � �' r <� r s
- '� �l / �,.� � \ � T _., � �, -'�.-� � .� ��� �`� 1•+ as 1 Lb k `� �- � �, —_ �� -' -'
r"= -° T t f r P lP 1 P r -• r �. � ` �, ,, . 1t1• "1 y 1 '1� 1 1 1t 1 l ��.i�t 1 ]s. �''� .. � � `'_. — -` �° '° r ' � _
--� _' �- �' s rf�rl f � �' ��. _''' �'� ��,"-,.��., ..``..� 1 �l � i 11 1 t j t 1 � � � 1�� rt 1°� � •` • ~' •.� �� s J � �' � `� __ -' � r � '° _� f ~/ ;c
_-� - _. � � �-. -. -, �. ti .� ti � � 1 � •. to � ti •. -.-` �. . � — � _a �.
iiH6G �;
Notes: Velocity Magnitudes in feet per day (ft/day).
Velocity vectors are in three dimensions.
Velocity vector directions shown as black arrows.
Velocity vectors on figure are displayed for flow and transport model Layer 17 (Upper Fractured Bedrock)
Source: Preliminary Updated Groundwater Flow and Transport Modeling Report for Cliffside Steam Station, Mooresboro, NC (Graziano, et al., November 2018)
LEGEND 0 — 0.001 ft/day
0.001 — 0.005 ft/day
0.005 — 0.01 ft/day
0.01 — 0.05 ft/day
0.05 — 0.1 ft/day ♦'
0.1 — 0.5 ft/day synTerra
0.5 — 1.0 ft/day
A 1+ ft/day �� DUKE
ENERGY
CAROLINAS
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE: [phone]
www.synterracorp.com
DRAWN BY: J. EBENHACK DATE: 4/11/2019
PROJECT MANAGER: S. SPINNER
CHECKED BY: S. DENEALE
FIGURE 3-14
FLOW VELOCITY VECTORS AND
MAGNITUDES IN
UPPER FRACTURED BEDROCK
2018 CAMA ANNUAL
INTERIM MONITORING REPORT
CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS, LLC
MOORESBORO, NORTH CAROLINA

Plan view
of cross-
section
A/'16aior awcr
AAB Downstream Dam`
(Southeast Corner) AAB
(Free Water in Northeast Corner)
Broadorw . w
River
rt
IL�Y
Notes. Velocty Magnitudes in feet per day (ft/day).
Velocity vectors are in three dimensions.
Velocity vector directions shown as black arrows.
Cross-section is oriented roughly south -to -north from areas upgradient of the active ash basin (AAB), through the AAB and AAB Downstream Dam, to the Broad River.
Source: Preliminary Updated Groundwater Flow and Transport Modeling Report for Cliffside Steam Station, Mooresboro, NC (Graziano, et al., November 2018)
0.05 - 0.1 ft da
LEGEND .O — 0.001 ft/day / y
`j�
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
FIGURE 3-15
FLOW VELOCITY VECTORS AND
N0.001 - 0.005 ft/day 0.1 — 0.5 ft/day
synTerra
PHONE: [phone]
MAGNITUDES THROUGH AAB
wwwsynterracorp.com
DOWNSTREAM DAM
0.005 - 0.01 ft/day 0.5 - 1.0 ft/day
2018 CAMA ANNUAL
0.01 — 0.05 ft/day . 1+ ft/day
' DUKE
4
DRAWN BY: J. EBENHACK DATE: 4/11/2019
PROJECTMANAGER: S.SPINNER
INTERIM MONITORING REPORT
CLIFFSIDE STEAM STATION
ENERGY
CHECKED BY: S. DENEALE
DUKE ENERGY CAROLINAS, LLC
CAROLINAS
MOORESBORO, NORTH CAROLINA

A - - A'
(SOUTH) NORTH
ACTIVE ASH BASIN
`Oc6
cN
__ U
ASHASH
Q Q Q
m m m m m m m
aaaaQaa
_
-----'-'------------ _'-"� -
WATER IN BASIN _
------------------ --
WATER IN BASIN
WATER IN BASIN
• "
SAPROLITE
_
ASH PORE WATER
-
-
ASH PORE WATER
/I
lit-
TRANSITION ZONE
�
moo-o�
SAPROLITE
/ \milm
0
SAPROLITE
FILL m y m
TRANSITION ZONE
\BEDROCK,I /
I /
I / / I / I / / /
/ \ / I / /
I
BROAD RIVER
\ /
TRANSITION ZONE
BEDROCK
BEDROCK
CROSS SECTION LOCATION
LEGEND
0 75 150 300
GWA 25S
WELL IN SHALLOW FLOW LAYER
V
ASH FLOW LAYER
NOTES
GWA 25D
WELL IN DEEP FLOW LAYER
WATER LEVEL ELEVATION
HORIZONTAL SCALE: 1" = 300'
1.
DEPTH TO WATER GAUGED IN MONITORING WELLS ON OCTOBER 22, 2018. VERTICAL SCALE: 1" = 60'
GWA 21BR
WELL IN BEDROCK FLOW LAYER
SHALLOW FLOW LAYER GROUNDWATER
5X VERTICAL EXAGGERATION
2.
NM -NOT MEASURED DURING 24-HOUR WATER LEVEL EVENT.
AB 4SL
WELL IN ASH PORE WATER
WELL WATER LEVEL ELEVATION
MW 102S
0
ABANDONED WELL/
V
DEEP FLOW LAYER GROUNDWATER
3.
BORON DATA INCLUDED IN THIS FIGURE ARE THE GEOMEAN FOR WELLS FOR WHICH 4 OR MORE VALID SAMPLES
WERE OBTAINED IN 2018. FOR WELLS FOR WHICH 4 OR MORE VALID SAMPLES WERE NOT OBTAINED IN 2018,
GEOTECHNICAL BORING
WELL WATER LEVEL ELEVATION
THE MOST RECENT VALID DATA ARE INCLUDED. (REFERENCE TABLE 3-5).
GENERALIZED WATER TABLE
V
BEDROCK FLOW LAYER GROUNDWATER
4.
THE NORTH CAROLINA 2L FOR BORON IS 700 ug/L.
GENERALIZED GROUNDWATER
WELL WATER LEVEL ELEVATION
5.
BACKGROUND THRESHOLD VALUE (BTV) FOR BORON IS 50 ug/L WITHIN THE SHALLOW,
FLOW DIRECTION
50 pg/L DEEP, 50 pg/L BEDROCK FLOW LAYERS.
1
BORON CONCENTRATION IN ug/L
©
ASH
6.
ALL VERTICAL ELEVATIONS ARE MEASURED IN FEET, NORTH AMERICA VERTICAL DATUM (NAND) OF 1988.
ASH PORE WATER
ALLUVIUM
® FILL
0 SAPROLITE
® TRANSITION ZONE
BEDROCK
780.00' WATER LEVEL
SOURCE INFORMATION:
ORIGINAL CROSS SECTION BASE OBTAINED FROM HDR,
CSA SUPPLEMENT 2, DATED AUGUST 2016.

CROSS SECTION LOCATION
J-
(SOUTH)
1A
LEGEND
GWA 25S
WELL IN SHALLOW FLOW LAYER
GWA 25D
WELL IN DEEP FLOW LAYER
GWA 21BR
WELL IN BEDROCK FLOW LAYER
AB 4SL
WELL IN ASH PORE WATER
MW 102S
ABANDONED WELL/
GEOTECHNICAL BORING
GENERALIZED WATER TABLE
GENERALIZED GROUNDWATER
FLOW DIRECTION
0
ASH
-
ASH PORE WATER
0
ALLUVIUM
®
FILL
0
SAPROLITE
ASH STORAGE AREA
91 1
/ \
SA
tTRANSI
BEDROCK _
J'
(NORTH)
/ - \ /
EDROCK / \ \ /\
0 50 100 200
HORIZONTAL SCALE: 1" = 200'
VERTICAL SCALE: 1" = 40'
5X VERTICAL EXAGGERATION
NOTES
ASH FLOW LAYER
WATER LEVEL ELEVATION
1.
DEPTH TO WATER GAUGED IN MONITORING WELLS ON OCTOBER 22, 2018.
SHALLOW FLOW LAYER GROUNDWATER
2.
NM - NOT MEASURED DURING 24-HOUR WATER LEVEL EVENT.
_
WELL WATER LEVEL ELEVATION
3.
BORON DATA INCLUDED IN THIS FIGURE ARE THE GEOMEAN FOR WELLS FOR WHICH 4 OR MORE VALID SAMPLES
DEEP FLOW LAYER GROUNDWATER
WERE OBTAINED IN 2018. FOR WELLS FOR WHICH 4 OR MORE VALID SAMPLES WERE NOT OBTAINED IN 2018,
THE MOST RECENT VALID DATA ARE INCLUDED. (REFERENCE TABLE 3-5).
WELL WATER LEVEL ELEVATION
4.
THE NORTH CAROLINA 2L FOR BORON IS 700 ug/L.
BEDROCK FLOW LAYER GROUNDWATER
WELL WATER LEVEL ELEVATION
5.
BACKGROUND THRESHOLD VALUE (BTV) FOR BORON IS 50 ug/L WITHIN THE SHALLOW,
50 ug/L DEEP, 50 ug/L BEDROCK FLOW LAYERS.
BORON CONCENTRATION IN ug/L
6.
ALL VERTICAL ELEVATIONS ARE MEASURED IN FEET, NORTH AMERICA VERTICAL DATUM (NAVD) OF 1988.
® TRANSITION ZONE SOURCE INFORMATION:
_ ORIGINAL CROSS SECTION BASE OBTAINED FROM
BEDROCK HDR, CSA SUPPLEMENT 2, DATED AUGUST 2016.
780.00' WATER LEVEL

K-
(WEST)
SUCK
CREEK
CROSS SECTION LOCATION
LEGEND
GWA 25S WELL IN SHALLOW FLOW LAYER
GWA 25D WELL IN DEEP FLOW LAYER
GWA 21BR WELL IN BEDROCK FLOW LAYER
AB 4SL WELL IN ASH PORE WATER
ABANDONED WELL/
MW 102S GEOTECHNICAL BORING
GENERALIZED WATER TABLE
-� GENERALIZED GROUNDWATER
FLOW DIRECTION
© ASH
- ASH PORE WATER
0 ALLUVIUM
® FILL
0 SAPROLITE
ACTIVE ASH BASIN
o16
z V z^ z z Z
- K'
(EAST)
a
o
w
m
TRANSITION
/\—ZONE
/\BEDROCK
\\BEDROCK\\
0 60 120 240
HORIZONTAL SCALE: 1" = 240'
VERTICAL SCALE: 1" = 48'
5X VERTICAL EXAGGERATION
NOTES
V
ASH FLOW LAYER
WATER LEVEL ELEVATION
1.
DEPTH TO WATER GAUGED IN MONITORING WELLS ON OCTOBER 22, 2018.
SHALLOW FLOW LAYER GROUNDWATER
2.
NM - NOT MEASURED DURING 24-HOUR WATER LEVEL EVENT.
WELL WATER LEVEL ELEVATION
3.
BORON DATA INCLUDED IN THIS FIGURE ARE THE GEOMEAN FOR WELLS FOR WHICH 4 OR MORE VALID SAMPLES
WERE OBTAINED IN 2018. FOR WELLS FOR WHICH 4 OR MORE VALID SAMPLES WERE NOT OBTAINED IN 2018,
DEEP FLOW LAYER GROUNDWATER
THE MOST RECENT VALID DATA ARE INCLUDED. (REFERENCE TABLE 3-5).
WELL WATER LEVEL ELEVATION
4.
THE NORTH CAROLINA 2L FOR BORON IS 700 Ng/L.
BEDROCK FLOW LAYER GROUNDWATER
WELL WATER LEVEL ELEVATION
5.
BACKGROUND THRESHOLD VALUE (BTV) FOR BORON IS 50 ug/L WITHIN THE SHALLOW,
50 ug/L DEEP, 50 ug/L BEDROCK FLOW LAYERS.
m
BORON CONCENTRATION IN ug/L
6.
ALL VERTICAL ELEVATIONS ARE MEASURED IN FEET, NORTH AMERICA VERTICAL DATUM (NAVD) OF 1988.
® TRANSITION ZONE SOURCE INFORMATION:
ORIGINAL CROSS SECTION BASE OBTAINED FROM
BEDROCK HDR, CSA SUPPLEMENT 2, DATED AUGUST 2016.
780.00' WATER LEVEL

IN
(SOUTHWEST) a
G to
M M
o Q Q N
SAPROLITE
TRANSITION
ZONE
\ / BEDROCK
LEGEND
(NORTHEAST)
UNITS 1-4 INACTIVE ASH BASIN
SAPROLITE -
/ I TRANSITION
/ — ZONE
1
BEDROCK
ASH PORE
WATER
BROAD RIVER
655.0'
ALLUVIUM
SAPROLITE
TRANSITION
,ZONE
BEDROCK
NOTES
0 50 100 200
HORIZONTAL SCALE: 1" = 200'
VERTICAL SCALE: 1" = 40'
5X VERTICAL EXAGGERATION
GWA 25S
WELL IN SHALLOW FLOW LAYER
V
ASH FLOW LAYER
1.
DEPTH TO WATER GAUGED IN MONITORING WELLS ON OCTOBER 22, 2018.
`- GWA 25D
WELL IN DEEP FLOW LAYER
WATER LEVEL ELEVATION
2.
NM - NOT MEASURED DURING 24-HOUR WATER LEVEL EVENT.
UNITS,-4 BROAD RIVER GWA-21BR
INA! rIVE
WELL IN BEDROCK FLOW LAYER
SHALLOW FLOW LAYER GROUNDWATER
3.
BORON DATA INCLUDED IN THIS FIGURE ARE THE GEOMEAN FOR WELLS FOR WHICH 4 OR MORE VALID SAMPLES
AS.l BASIN AB-4SL
WELL IN ASH PORE WATER
WELL WATER LEVEL ELEVATION
WERE OBTAINED IN 2018. FOR WELLS FOR WHICH 4 OR MORE VALID SAMPLES WERE NOT OBTAINED IN 2018,
ASH
THE MOST RECENT VALID DATA ARE INCLUDED. (REFERENCE TABLE 3-5).
STORAGE
U AREA MW 102S
ABANDONED WELL/
V
DEEP FLOW LAYER GROUNDWATER
4.
THE NORTH CAROLINA 2L FOR BORON IS 700
N
r
GEOTECHNICAL BORING
WELL WATER LEVEL ELEVATION
pg/L.
_� �U ACTIVE
GENERALIZED WATER TABLE
BEDROCK FLOW LAYER GROUNDWATER
5.
BACKGROUND THRESHOLD VALUE (BTV) FOR BORON IS 50 pg/L WITHIN THE SHALLOW,
�N ASH BASIN
GENERALIZED GROUNDWATER
WELL WATER LEVEL ELEVATION
50 pg/L DEEP, 50 pg/L BEDROCK FLOW LAYERS.
OG�Fpp
FLOW DIRECTION
6.
ALL VERTICAL ELEVATIONS ARE MEASURED IN FEET, NORTH AMERICA VERTICAL DATUM (NAVD) OF 1988.
1
BORON CONCENTRATION IN pg/L
h� ©
ASH
FgRpgp
ASH PORE WATER
0
Mpp�wRogp
ALLUVIUM
®
FILL
FIGURE 3-19
NOTE:
SAPROLITE
16
GENERAL CROSS SECTII
CROSS SECTION H-H'IS LINEAR IN NATURE AND ALL
SOURCE INFORMATION:
WnTeaa
148 RIVER STREET, SUITE 220
FORMER UNITS 1-4 ASH
LOCATIONS NOTALONG THE CROSS SECTION ARE ®
TRANSITION ZONE
ORIGINAL CROSS SECTION BASE OBTAINED FROM HDR,
GREENVILLE, SOUTH CAROLINA 29601
2018 CAMA ANNUAL INTERIM MON
PROJECTED ONTO THE CROSS SECTION.
BEDROCK
CSA SUPPLEMENT 2, DATED
AUGUST 2016.
DUKE
PHONE[phone]
WWW.synterracorp.com
CLIFFSIDE STEAM STA
CROSS SECTION LOCATION 780.00'
WATER LEVEL
�I /�`,
K1r_:D — V
DRAWN BY:ADAMFEIGL DATE:04/25/2019
PROJECT MANACER'SCOTTSPINNER
DUKE ENERGY CAROLIN,
RArlii0II=QP l0r) KInaTU rJ

L =
(SOUTH) w w
0
0
w z z
w w w
UNIT 5 INACTIVE ASH BASIN M
I �
a
fit
�m FILL o uh w
FILL � � ? Q
----------------------------------------------------------------------------------- V
FILL ------------------ _ '►---------------_------------- _ -- -_ --_ --_ --_ --_ --_ ASH-= --_ --_ --_ --_ --_ --_ -- _ --_ --_ --_ --_ --_ --_ --_ --_ --_ --_ --_ --_ --_ -------
ASH -_ --_ --_ --_ --_ --_ --_ -- FILL
SAPROLITE=-
\ ASH PORE WATER '----� -- SAPROLITE
TRANSITION =---------------
ZONE - - - --- --- --- --- --- -IF-- --- --
- lEl _
SAPROLITE
14-
TRANSITION
BEDROCK _ / \ \ / 1 / �_ / _ / �- / \ ZONE
LEGEND
GWA 25S
WELL IN SHALLOW FLOW LAYER
GWA 25D
WELL IN DEEP FLOW LAYER
UNITS1-4gROADRIVER GWA 21BR
INACTIVE
WELL IN BEDROCK FLOW LAYER
r ASH BASIN AB 4SL
WELL IN ASH PORE WATER
MW 102S
ABANDONED WELL/
GEOTECHNICAL BORING
GENERALIZED WATER TABLE
GENERALIZED GROUNDWATER
FLOW DIRECTION
r ©
ASH
-
ASH PORE WATER
0
MCCRA�'ROgO
ALLUVIUM
NDFILL
®
FILL
NOTE: 0
SAPROLITE
LOCCROSSNATURE AND
IONS NOT ALO GTHECRIOSSSECTIONAREL ®
PROJECTED ONTO THE CROSS SECTION.
TRANSITION ZONE
BEDROCK
CROSS SECTION LOCATION
780.00'
WATER LEVEL
BEDROCK
NOTES
L'
(NORTH)
BROAD
RIVER
-666.00'
0 50 100 200
HORIZONTAL SCALE: 1" = 200'
VERTICAL SCALE: 1" = 40'
5X VERTICAL EXAGGERATION
ASH FLOW LAYER
WATER LEVEL ELEVATION
1.
DEPTH TO WATER GAUGED IN MONITORING WELLS ON OCTOBER 22, 2018.
2.
NM - NOT MEASURED DURING 24-HOUR WATER LEVEL EVENT.
SHALLOW FLOW LAYER GROUNDWATER
WELL WATER LEVEL ELEVATION
3.
BORON DATA INCLUDED IN THIS FIGURE ARE THE GEOMEAN FOR WELLS FOR WHICH 4 OR MORE VALID SAMPLES
WERE OBTAINED IN 2018. FOR WELLS FOR WHICH 4 OR MORE VALID SAMPLES WERE NOT OBTAINED IN 2018,
V
DEEP FLOW LAYER GROUNDWATER
THE MOST RECENT VALID DATA ARE INCLUDED. (REFERENCE TABLE 3-5).
WELL WATER LEVEL ELEVATION
4.
THE NORTH CAROLINA 2L FOR BORON IS 700 ug/L.
BEDROCK FLOW LAYER GROUNDWATER
WELL WATER LEVEL ELEVATION
5.
BACKGROUND THRESHOLD VALUE (BTV) FOR BORON IS 50 ug/L WITHIN THE SHALLOW,
50 ug/L DEEP, 50 pVL BEDROCK FLOW LAYERS.
m
BORON CONCENTRATION IN ug/L
6.
ALL VERTICAL ELEVATIONS ARE MEASURED IN FEET, NORTH AMERICA VERTICAL DATUM (NAVD) OF 1988.
SOURCE INFORMATION:
ORIGINAL CROSS SECTION BASE OBTAINED
FROM HDR, CSA SUPPLEMENT 2, DATED
AUGUST 2016.

(WEST)
SAPROLITE
UNIT 5INACTIVE ASH BASIN
FILL
D'
(EAST)
\ T
\7FRANSITION
ZONE
_ —
__—
—_ —
— ------------------------------------�-------
------�---�---__
/
--ASH
_ _ _
=
--- - --- ----- ----- ----- ----- ----- -----
-------- --- --- --- ---
SAPROLITE-----------------------------
----- --__ —__ _ -- _—_ _—__ —__ _ -- _—_ _—__
--- --- --- --- --- --- ---
ASH -_--_--_-----_--_--_----
—__ _ -- _
--- -
v
q
cl
-------------------------
-------------------
--- --- --------------
— — — — — — — — — — — — — —
- --- --- ---
---------------
— —
-
/---------y
/
ASH PORE WATER
---------------
-----------_ - - - - -
�----------- L----------------
?�
TRANSITION
ZONE
-
---
ASH PORE WATER
--------------- i------=
bob-
_ �/
m SAPROLITE 0111111110-M
\\/
,ZONESITION \\/
BEDROCK / \ \ / /
- \ \ / \ \ /
/ _
\ /EDT
,BEDROCK
CROSS SECTION LOCATION
LEGEND
NOTES
0 60 120 240
HORIZONTAL SCALE: 1" = 240'
VERTICAL SCALE: 1" = 48'
5X VERTICAL EXAGGERATION
GWA 25S WELL IN SHALLOW FLOW LAYER
V
ASH FLOW LAYER
1.
DEPTH TO WATER GAUGED IN MONITORING WELLS ON OCTOBER 22, 2018.
GWA 25D WELL IN DEEP FLOW LAYER
WATER LEVEL ELEVATION
2.
NM - NOT MEASURED DURING 24-HOUR WATER LEVEL EVENT.
GWA 21BR WELL IN BEDROCK FLOW LAYER
SHALLOW FLOW LAYER GROUNDWATER
3.
BORON DATA INCLUDED IN THIS FIGURE ARE THE GEOMEAN FOR WELLS FOR WHICH 4 OR MORE VALID SAMPLES
AB 4SL WELL IN ASH PORE WATER
WELL WATER LEVEL ELEVATION
WERE OBTAINED IN 2018. FOR WELLS FOR WHICH 4 OR MORE VALID SAMPLES WERE NOT OBTAINED IN 2018,
THE MOST RECENT VALID DATA ARE INCLUDED. (REFERENCE TABLE 3-5).
ABANDONED WELL/
MW 102S
DEEP FLOW LAYER GROUNDWATER
4.
THE NORTH CAROLINA 2L FOR BORON IS 700 ug/L.
GEOTECHNICAL BORING
WELL WATER LEVEL ELEVATION
— GENERALIZED WATER TABLE
BEDROCK FLOW LAYER GROUNDWATER
5.
BACKGROUND THRESHOLD VALUE (BTV) FOR BORON IS 50 ug/L WITHIN THE SHALLOW,
50 ug/L DEEP, 50 ug/L BEDROCK FLOW LAYERS.
GENERALIZED GROUNDWATER
WELL WATER LEVEL ELEVATION
FLOW DIRECTION
6.
ALL VERTICAL ELEVATIONS ARE MEASURED IN FEET, NORTH AMERICA VERTICAL DATUM (NAVD) OF 1988.
1
BORON CONCENTRATION IN ug/L
© ASH
ASH PORE WATER
ALLUVIUM
® FILL
0 SAPROLITE
® TRANSITION ZONE
BEDROCK
780.00' WATER LEVEL
SOURCE INFORMATION:
ORIGINAL CROSS SECTION BASE OBTAINED
FROM HDR, CSA SUPPLEMENT 2, DATED
AUGUST 2016.

E
(SOUTHWEST)
,
,
,
,
,
MAIN DAM
I ,
-----------------------------------------------
I ,
I - ,
I ,
� I
o
V/
I
I
I
I
I I
-ASH PORE WATER ---- --- --- --- --- --- --- --- -- ----
- --- -------------------------------=ASH==---
--------
UNIT 5 INACTIVE ASH BASIN
-
LEGEND
SAPROLITE
/ — \ mm
1 ,\/\M/1
BEDROCK \ � TI
NOTES
E'
(NORTHEAST)
BROAD
RIVER
655.0'
r1koL`I01IIIIIIIIIIIIIItftftftl
0 50 100 200
HORIZONTAL SCALE: 1" = 200'
VERTICAL SCALE: 1" = 40'
5X VERTICAL EXAGGERATION
GWA 25S
WELL IN SHALLOW FLOW LAYER
V
ASH FLOW LAYER
1.
DEPTH TO WATER GAUGED IN MONITORING WELLS ON OCTOBER 22, 2018.
GWA 25D
WELL IN DEEP FLOW LAYER
WATER LEVEL ELEVATION
2.
NM -NOT MEASURED DURING 24-HOUR WATER LEVEL EVENT.
UNITS1-4gROADRIVER GWA 21BR
WELL IN BEDROCK FLOW LAYER
SHALLOW FLOW LAYER GROUNDWATER
INACTIVE
ASH BASIN AB-4SL
WELL IN ASH PORE WATER
WELL WATER LEVEL ELEVATION
3.
BORON DATA INCLUDED IN THIS FIGURE ARE THE GEOMEAN FOR WELLS FOR WHICH 4 OR MORE VALID SAMPLES
WERE OBTAINED IN 2018. FOR WELLS FOR WHICH 4 OR MORE VALID SAMPLES WERE NOT OBTAINED IN 2018,
ABANDONED WELL/
V
DEEP FLOW LAYER GROUNDWATER
THE MOST RECENT VALID DATA ARE INCLUDED. (REFERENCE TABLE 3-5).
MW 102S
GEOTECHNICAL BORING
WELL WATER LEVEL ELEVATION
4.
THE NORTH CAROLINA 2L FOR BORON IS 700 pg/L.
�GENERALIZED
WATER TABLEV
BEDROCK FLOW LAYER GROUNDWATER
5.
BACKGROUND THRESHOLD VALUE (BTV) FOR BORON IS 50 pg/L WITHIN THE SHALLOW,
GENERALIZED GROUNDWATER
WELL WATER LEVEL ELEVATION
50 pg/L DEEP, 50 pg/L BEDROCK FLOW LAYERS.
°ok
FAp�F
FLOW DIRECTION
®
BORON CONCENTRATION IN pg/L6.
ALL VERTICAL ELEVATIONS ARE MEASURED IN FEET, NORTH AMERICA VERTICAL DATUM (NAVD) OF 1988.
©
ASH
gRogo
ASH PORE WATER
0
Moc�wRogp
ALLUVIUM
®
FILL
FIGURE 3-22
SOURCE INFORMATION:
16
GENERAL CROSS SEC
NOTE:
SAPROLITE
CROSS SECTIONAND
ORIGINAL CROSS SECTION BASE OBTAINED FROM
HDR, CSA SUPPLEMENT 2, DATED AUGUST 2016.
mm
e11G
148 RIVER STREET, SUITE 220
INACTIVE UNIT 5 ASH
NOTALONG THE CROSS SECTION ®
TRANSITION ZONE
GREENVILLE, SOUTH CAROLINA 29601
2018 CAMA ANNUAL INTERIM MO
PROJECTED ONTO THE CROSS SECTION. ®
BEDROCK
DUKE
PHONE [phone]
WWW.synterracorp.com
CLIFFSIDE STEAM Sl
CROSS SECTION LOCATION 780.00'
WATER LEVEL
/�`,
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DRAWN BY: ADAMFEIGL DATE:04/25/2019
PROJECT MANACER'SCOTTSPINNER
DUKE ENERGY CAROLI
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DUKE
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'
ENERGY.
DRAWN BY: J. KIRTZ DATE: 04/25/2019
-
♦ /
CAROLINAS
PROJECT MANAGER: S. SPINNER
CHECKED BY: S. DENEALE
NOTES:
Legend
0
0
4i • •0... _._. • • 00
• •
FIGURE 3-24
ISOCONCENTRATION MAP
GEOMEAN OF BORON IN DEEP FLOW ZONE
2018 CAMA ANNUAL INTERIM MONITORING REPORT
CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS, LLC
MOORESBORO, NORTH CAROLINA

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148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
DRAWN BY: J. KIRTZ DATE: 04/25/2019
PROJECT MANAGER: S. SPINNER
CHECKED BY: S. DENEALE
NOTES:
FIGURE 3-26
ISOCONCENTRATION MAP
GEOMEAN OF STRONTIUM IN SHALLOW FLOW ZONE
2018 CAMA ANNUAL INTERIM MONITORING REPORT
CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS, LLC
MOORESBORO, NORTH CAROLINA

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GRAPHIC SCALE IN FEET
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
DRAWN BY: J. KIRTZ DATE: 04/25/2019
PROJECT MANAGER: S. SPINNER
CHECKED BY: S. DENEALE
FIGURE 3-29
ISOCONCENTRATION MAP
GEOMEAN OF SULFATE IN SHALLOW FLOW ZONE
2018 CAMA ANNUAL INTERIM MONITORING REPORT
CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS, LLC
MOORESBORO, NORTH CAROLINA

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t e>DUKE
ENERGY DRAWN BY: J. KIRTZ DATE: 04/25/2019
- / CAROLINA PROJECT MANAGER: S. SPINNER
CHECKED BY: S. DENEALE
9
NOTES:
•
FIGURE 3-30
ISOCONCENTRATION MAP
GEOMEAN OF SULFATE IN DEEP FLOW ZONE
2018 CAMA ANNUAL INTERIM MONITORING REPORT
CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS, LLC
MOORESBORO, NORTH CAROLINA

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GRAPHIC SCALE IN FEET
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
(' DUKE HHw.s nterracor .com
ENERGY. DRAWN BY: J. KIRTZ DATE: 04/25/2079
CAROLINAS PROJECT MANAGER: S. SPINNER
CHECKED BY: S. DENEALE
FIGURE 3-32
ISOCONCENTRATION MAP
GEOMEAN OF MANGANESE IN SHALLOW FLOW ZONE
2018 CAMA ANNUAL INTERIM MONITORING REPORT
CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS, LLC
MOORESBORO, NORTH CAROLINA

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148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
800
DRAWN BY: J. KIRTZ DATE: 04/25/2019
PROJECT MANAGER: S. SPINNER
CHECKED BY: S. DENEALE
m
FIGURE 3-33
ISOCONCENTRATION MAP
GEOMEAN OF MANGANESE IN DEEP FLOW ZONE
2018 CAMA ANNUAL INTERIM MONITORING REPORT
CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS, LLC
MOORESBORO, NORTH CAROLINA

AB-01 S
GWA-21 S
150
2000
150
7500
—0— Boron
�— Strontium
6000
Manganese
125
125
�T
Sulfate
J
J
4500
J
0)
1500
v
�
a
100
�
p
100
3000
0
M
o
75
a) 1000
5
75
Time -series plots for AAB East
1500
0
0
°'
U
Continued on Figure 3-36
O
U
U
U
f Boron
U
�
:5
50
a>
2t
­v— Strontium
50 a�
100
—0— Manganese
U)
U) 500
Sulfate
m
75
U)
m
o7
50
25
25
25
0
0
0
0
1/1/15
1/1/16
1/1/17
1/1/18
1/1/19
1/1/15 1/1/16
1/1/17
1/1/18
1/1/19
Time
Time
AB-01 D
GWA-21 BRU
GWA-21 BR
3500
150
600
150
600
150
3000
—0--- Boron
�— Strontium
Manganese
� Boron
—C— Strontium
Boron
ontium
125
500
Manganese
125
500
� Manganese
125
J
+ Sulfate_
Su
ulfate
lfate
0
2500
100
0 400
E
100
0 400
100
E
2000
o
-
o
-
o
75
L
(3)
300
�
75
300
75
�
U
1500
0
U
U
U
c
U
o
U
o
U
�
50
a)
C
200
50 N
200
50
N
1000
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VJ
07
,^^
VJ
VJ,^^
00
25
m
100
U)
25
m
100
25
U)500
0
0
0
0
0
0
1/1/15 1/1/16
1/1/17
1/1/18
1/1/19
1/1/15
1/1/16
1/1/17
1/1/18
1/1/19
1/1/15
1/1/16 1/1/17 1/1/18 1/1/19
Time
Time
Time
Reference
Boron Strontium
Manganese
Sulfate
Reporting Limits
148 RIVER STREET, SUITE 220
FIGURE 3-35
LEGEND
Criteria
(ka/L) (ka/L)
(ka/L)
(mg/L.)
Boron (fag/L) 50
GREENVILLE,
GREEN ILLE,S
SOUTH CAROLINA 29601
TIME -SERIES PLOTS
700 N/A
250
Strontium 5
PHONEsynTerra
1-9999
AAB EAST 1
IM
IMAC
N/A N/A
N/A
/
N/A
Manganese (fag/L) 5
(pg/
BTV (S)
50 36.71
168.8
1.169
Sulfate (mg/L) 1
www.synterracorp.com
2018 CAMA ANNUAL
BTV (D)
50 56.14
78.31
10
INTERIM MONITORING REPORT
BTV (BR)
50 107.1
89.4
15.1
DUKE
DRAWN BY:
PROJECTMANAGER:
T. BERNIER
S.SPINNER
DATE: 4/8/2019
CLIFFSIDE STEAM STATION
Notes: N/A = Not Applicable
BTV =Background Threshold Value S
=Shallow
D c Deep/Transition Zone
ENERGY.
CHECKED BY:
H. GARRETT
DUKE ENERGY CAROLINAS, LLC
BR =Bedrock IMAC =Interim Maximum Allowable Concentration �Jg/L
micrograms
per liter
mg/L = milligrams per liter
CAROLINAS
MOORESBORO, NORTH CAROLINA

MW-11 S
MW-20D
GWA-22S
3000
300
800
700
150
500
150
Boron
— — Strontium
Boron
Strontium
Manganese
Boron
—v— Strontium
2500
Manganese
250
125
125
J
Sulfate
J
Sulfate
400
Manganese
�_
600
+ Sulfate
0 2000
200
0
100 p
0
100 p
ICUL
p
.9
.= 500
c
p
cc 300
�
2
L
75
v 1500
150 0
cpi 400
75 N
v
75 api
C
U
C
U
0
U
C
U
300
U
U 200
C)
1000
100 a)
50 _p
p
50 a)
�
co
n3
io
(n 200
U)
m 500
jjoijjji
50
m
25
00 100
U)
25
100
0
0
0
0 0
0
0
0
0
2008
2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019
2011
2012 2013 2014 2015 2016 2017 2018 2019
1/1/15
1/1/16 1/1/17 1/1/18 1/1/19
Time
Time
Time
MW-11 DA
MW-20DR
GWA-22BRU
600
300
800
150
500
150
500
t Boron
­v— Strontium
250
700
J
125
400
Boron
­v— Strontium
—0-- Manganese
125
Manganese
J
+ Sulfate
Sulfate
600
E
0 400
200
0
100
0
100
p
500
p
—
is 300
p
c
f Boron
�— Strontium
—
m
300
150
400
Manganese
75
p
75
0
�
0
Sulfate
o
L)
200
C
U
, 300
C)
U
5 200
100 N
50 N
50 (D
L
U7
U) 200
Ed
U)
U7
m
m 100
U)
50
25
25
100
0
0
0
0
0
0
1/1/15
1/1/16 1/1/17 1/1/18 1/1/19
2011
2012 2013 2014 2015 2016 2017 2018 2019
1/1/15
1/1/16 1/1/17 1/1/18 1/1/19
Time
Time
Time
Reference Boron Strontium Manganese Sulfate Reporting Limits
148 RIVER STREET, SUITE 220
FIGURE 3-36
LEGEND Criteria (ka/L) (ka/L) (ka/L) (mg/L.) Boron (fag/L) 50
GREENVILLE, SOUTH CAROLINA 29601
GREEN ILLE,S
TIME -SERIES PLOTS
700 N/A 250 Strontium 5
1-9999
PHONEsynTerra
AAB EAST 2
IM /
IMAC N/A N/A N/A N/A Manganese (fag/L) 5
(pg/
BTV (S) 50 36.71 168.8 1.169 Sulfate (mg/L) 1
www.synterracorp.com
2018 CAMA ANNUAL
BTV (D) 50 56.14 78.31 10
INTERIM MONITORING REPORT
BTV (BR) 50 107.1 89.4 15.1
DUKE
DRAWN BY: T. BERNIER DATE: 4/8/2019
PROJECT MANAGER: S.SPINNER
CLIFFSIDE STEAM STATION
Notes: N/A = Not Applicable BTV = Background Threshold Value S = Shallow D = Deep/Transition Zone
44t
ENERGY
CHECKED BY: H. GARRETT
DUKE ENERGY CAROLINAS, LLC
BR = Bedrock IMAC = Interim Maximum Allowable Concentration pg/L = micrograms per liter
mg/L = milligrams per liter
CAROLINAS
MOORESBORO, NORTH CAROLINA

6000
AB-03S
1600
AB-03SL
160
1200
AB-03SLA
80
1200
f Boron
�— Strontium
1400
1100
140
1100
5000
—I]--Manganese
1000
�
Sulfate
J
J
1200
�
E
0) 1000
120 �
� 900
60
0)
0
4000
c
c
c
1000
0
.2 900
100 0
800
p
i
co
.2
200
co
3000
800
c
U
c 800
U
80
c
U
40
250
(DU
c
g
2000
600
0
U
a)
0
U 200
c
f Boron
60 U
0 150
c
-AV-Boron
C
U
L
w
:E
­v— Strontium
2
­�— Strontium
.2
_
—0— Manganese
100
—D— Manganese
cc
cn
m
400
75
o7
150
01
f Sulfate
;o
40 5
(
Sulfate
20
cc
1000
c0 100
�
m
U)
200
50
20
1
50
0
0
1/1/15
1/1/16
1/1/17 1/1/18 1/1/19
0
0
0
0
1/1/15 1/1/16
1/1/17
1/1/18 1/1/19
1/1/15
1/1/16
1/1/17 1/1/18 1/1/19
Time
Time
Time
AB-031
AB-03BRUA
1400
50
700
250
f Boron
­v— Strontium
+ Boron
­v— Strontium
1200
45
650
600
Manganese
—0— Manganese
Sulfate
40
200
J 550
+ Sulfate
J
1000
35
E
500
E
o
c
0 450
�-
c
800
30
0
io
400
150 0
25
L
°; 350
m
Time -series plots for AAB North
U600
o
0 300
0
Continued on Figures 3-38 through 3-40
20
U
100
U
c
(D
c 250
400
15
200
U
cp
10
U)
m 150
50 C/)
200
100
5
50
0
0
0
0
1/1/15
1/1/16
1/1/17 1/1/18 1/1/19
1/1/15
1/1/16
1/1/17
1/1/18
1/1/19
Time
Time
Reference
Boron Strontium Manganese Sulfate
Reporting Limits
148 RIVER STREET, SUITE 220
FIGURE 3-37
LEGEND Criteria
(kg/L.) (ka/L) (kg/L.) (mg/L.)
Boron (fag/L) 50
GREENVILLE, SOUTH CAROLINA
29601
TIME -SERIES PLOTS
700 N/A 50 250
Strontium 5
PHONE:[phone]
AAB NORTH 1
IMAC
IM
N/A N/A N/A N/A
Manganese (fag/L) 5
(pg/
synTerra
BTV (S)
50 36.71 168.8 1.169
Sulfate (mg/L) 1
www.synterracorp.com
2018 CAMA ANNUAL
BTV (D)
50 56.14 78.31 10
INTERIM MONITORING REPORT
BTV (BR)
50 107.1 89.4 15.1
� DUKE
DRAWN BY: J. THAO DATE: 4/8/2019
PROJECT MANAGER: S.SPINNER
CLIFFSIDE STEAM STATION
Notes: N/A = Not Applicable
BTV = Background Threshold Value S = Shallow
D =
Deep/Transition Zone
ENERGY
CHECKED BY: H. GARRETT
DUKE ENERGY CAROLINAS, LLC
BR =
Bedrock IMAC = Interim Maximum Allowable Concentration pg/L = micrograms per liter
mg/L
= milligrams per liter
CAROLINAS
MOORESBORO, NORTH CAROLINA

CCR-06S
CCR-07S
AS-01 SB
1800
800
2500
800
6000
1000
Boron
1600
Sulfate
f Boron
­v— Strontium
900
2000
700
1400
600
J
J
a) 5500
--0—Manganese
Sulfate
800
600
700 E
C
1500
E
p
1200
p
o
C:
g
500
0
m
600
1
L
1000
L
5000
E
L
1000
ca
400
500
v
400
c
U
800
p
p
0
)
400 U
150
300
U
600
a0
2 4500
a)
p
is
300
m
400
200
cn 3000
U)
100
200
U)
op
200 07
m
f Boron
200
2500
100
50
­v— Strontium
—0— Manganese
100
--0— Sulfate
0
0
0
0
2000
0
1/1/15 1/1/16
1/1/17
1/1/18
1/1/19
1/1/15 1/1/16
1/1/17
1/1/18 1/1/19
1/1/15
1/1/16 1/1/17 1/1/18 1/1/19
Time
Time
Time
CCR-06D
CCR-07D
AS-01 D
1700
200
80
800
800
160
1600
+Boron
f Sulfate
175
750
Boron
� �— Strontium
700
Boron
�— Strontium
140
—0—Manganese
Manganese
1500
150
700
Sulfate
60 6
)
600
+Sulfate
120
E
E
E
po
1400
125
p
_
p 650
p
o
500
100
p
p
600
L
_ac �
1300
100
N
v
40 c
p
cpi
400
80
p
N
U
U
p
U 550
p
p
p
U
p
�j
1200
75
U
o
U
U
p
300
60
U
p
500
m
p
m
1100
50
U) 200
20 p
(0200
40
pp
�
00
U)
1000
25
100 -
100
20
900
0
0
0
0 0
1/1/15 1/1/16
1/1/17
1/1/18
1/1/19
1/1/15 1/1/16
1/1/17
1/1/18
1/1/19
1/1/15 1/1/16 1/1/17 1/1/18 1/1/19
Time
Time
Time
Time -series plots for AAB North
Continued on Figures 3-39 through 3-40
Reference
Boron Strontium
Manganese
Sulfate
Reporting Limits
148 RIVER STREET, SUITE 220
FIGURE 3-38
LEGEND Criteria
(ka/L) (ka/L)
(ka/L)
(ma/L)
Boron (fag/L) 50
GREENVILLE, SOUTH
CAROLINA
29601
TIME -SERIES PLOTS
700 N/A
50
250
Strontium 5
PHONE:[phone]
AAB NORTH 2
IM
IMAC
N/A N/A
N/A
N/A
Manganese (fag/L) 5
(pg/
synTerra
BTV (S)
50 36.71
168.8
1.169
Sulfate (mg/L) 1
www.synterracorp.com
2018 CAMA ANNUAL
BTV (D)
50 56.14
78.31
10
INTERIM MONITORING REPORT
BTV (BR)
50 107.1
89.4
15.1
� DUKE
DRAWN BY: J. THAO
PROJECT MANAGER: S.SPINNER
DATE: 4/8/2019
CLIFFSIDE STEAM STATION
Notes: N/A = Not Applicable
BTV = Background Threshold Value S
= Shallow
D =
Deep/Transition Zone
ENERGY
CHECKED BY: H. GARRETT
DUKE ENERGY CAROLINAS, LLC
BR = Bedrock IMAC
= Interim Maximum Allowable Concentration pg/L = micrograms per liter
mg/L = milligrams per liter
CAROLINAS
MOORESBORO, NORTH CAROLINA

CLMW-03S
AS-07S
4000
3500
+ Boron
300
24000
22000
--W- Boron
_v— Strontium
800
700
­v— Strontium
20000
—0— Manganese
J
—0-- Manganese
250
�1 18000
Sulfate
0)
3000
Sulfate
� 16000
600
200
c 14000
2500
is 12000
500 p
2000
150
10000
400
4000
U
Time -series plots for AAB North
0
0
Continued on Figure 3-40
1500
U
3000
30o
100
N
2
N
M
N
m1000
2000
200
m
50
11111,
500
1000
100
0 0
0 0
2008
2009 2010 2011
2012 2013 2014 2015
2016 2017 2018
2019
1/1/15 1/1/16
1/1/17
1/1/18
1/1/19
Time
Time
CLMW-03D
AS-07D
1600
AS-07BRA
1100
350
3000
160
160
--*— Boron
­v— Strontium
I I
Boron
­v— Strontium
1400
+ Boron
­v— Strontium
1000
300
140
140
900
--0-- Manganese
2500
Manganese
1200
—E]-- Manganese
Sulfate
Sulfate
J
+ Sulfate
800
250
a>
120
1000
120
E
E
700
v
c 2000
.�
100 p
C
•� 800
100
p
7
200
.9
1�
600
c
v 1500
600
150
80
200
80
0
500
o
c
o
U
o
U
o
U
o
c
400
100
U
C:
60 U
150
60
)
75
,
:E 1000
300
U)
40
67 100
40
m
200
50
cn
m
cn
CIS
500
20
50
50
20
100
0
0
0
0
0
0
2008
2009 2010 2011
2012 2013 2014 2015
2016 2017 2018
2019
1/1/15
1/1/16
1/1/17
1/1/18
1/1/19
1/1/15
1/1/16 1/1/17 1/1/18 1/1/19
Time
Time
Time
Reference
Boron Strontium
Manganese
Sulfate
Reporting Limits
148 RIVER STREET, SUITE 220
FIGURE 3-39
LEGEND
Criteria
(kg/L) (kg/L)
(kg/L)
(mg/L.)
Boron (fag/L) 50
10
GREENVILLE, SOUTH CAROLINA
GREEN ILLE,S
29601
TIME -SERIES PLOTS
700 N/A
250
Strontium 5
1-9999
AAB NORTH 3
IMAC
IM
N/A N/A
N/A
/
N/A
Manganese (fag/L) 5
(pg/
synTerra
BTV (S)
50 36.71
168.8
1.169
Sulfate (mg/L) 1
www.synterracorp.com
2018 CAMA ANNUAL
BTV (D)
50 56.14
78.31
10
INTERIM MONITORING REPORT
BTV (BR)
50 107.1
89.4
15.1
� DUKE
DRAWN BY:
PROJECT MANAGER:
J. THAD DATE: 4/8/2019
S.SPINNER
CLIFFSIDE STEAM STATION
Notes: N/A
= Not Applicable
BTV = Background Threshold Value S
= Shallow
D =
Deep/Transition Zone
ENERGY
CHECKED BY: H. GARRETT
DUKE ENERGY CAROLINAS, LLC
BR
= Bedrock IMAC
= Interim Maximum Allowable
Concentration pg/L = micrograms per liter
mg/L = milligrams per liter
CAROLINAS
MOORESBORO, NORTH CAROLINA

AS-08S
AS-02S
5000
160
f Boron
14000
12000
+ Boron
�— Strontium
500
140
�— Strontium
Manganese
4000
--0— Manganese
J
J 10000
Sulfate
.d
400 J
Sulfate
120
0 8000
E
c
100
�
c
6000
c`Lo
3000
u
300 •2
80
4000y
1500�
Not Applicable
U
2000
0
U 1250
—�
200 0
60
U
c
U
:5
1000
U)
40
67 750
pp
1000
07
m
r
100 U)
500
20
250
0
0
0
0
1/1/15
1/1/16
1/1/17
1/1/18
1/1/19
1/1/15 1/1/16
1/1/17
1/1/18 1/1/19
Time
Time
AS-08D
AS-02D
AS-02BR
250
700
400
500
180
5500
5000
Boron
�— Strontium
—0— Manganese
600
-0-- Boron
�— Strontium
_D_ Manganese
160
J
Sulfate
200
J
400
+ Sulfate
140
4500
500
300
�
;_
c
0
a
120
io
150
o
i6
g
i6 300
o
4000
400
io
100
200
c0i
(D
C
�j
3500
100
U
o
U 300
U
o
O
U 200
80
U
0
c
U
U
c
U
75
m
g
60
(D
-
1000
200
76
(n
f Boron
100
40
op
50
U
m
­v— Strontium
U7
m 100
500
100
Manganese
f Sulfate
20
0
0
0
0
0
0
1/1/15 1/1/16
1/1/17
1/1/18
1/1/19
1/1/15
1/1/16
1/1/17
1/1/18
1/1/19
1/1/15
1/1/16
1/1/17 1/1/18 1/1/19
Time
Time
Time
Reference
Boron
Strontium
Manganese
Sulfate
Reporting Limits
148 RIVER STREET, SUITE 220
FIGURE 3-40
LEGEND Criteria
(kg/L.)
(kg/L.)
(kg/L)
(mg/L.)
Boron (fag/L) 50
161P
GREENVILLE,
SOUTH CAROLINA
29601
TIME -SERIES PLOTS
700
N/A
50
250
strontium 5
PHONE:[phone]
AAB NORTH 4
IMAC
IM
N/A
N/A
N/A
N/A
Manganese (fag/L) 5
(pg/
synTerra
BTV (S)
50
36.71
168.8
1.169
Sulfate (mg/L) 1
www.synterracorp.com
2018 CAMA ANNUAL
BTV (D)
50
56.14
78.31
10
INTERIM MONITORING REPORT
BTV (BR)
50
107.1
89.4
15.1
� DUKE
DRAWN BY: J. THAO DATE: 4/8/2019
PROJECT MANAGER: S.SPINNER
CLIFFSIDE STEAM STATION
Notes: N/A = Not Applicable
BTV
= Background Threshold Value S
= Shallow
D =
Deep/Transition Zone
ENERGY
CHECKED BY:
H. GARRETT
DUKE ENERGY CAROLINAS, LLC
BR = Bedrock IMAC = Interim
Maximum Allowable Concentration pg/L = micrograms
per liter
mg/L = milligrams per liter
CAROLINAS
MOORESBORO, NORTH CAROLINA

6000
AB-03S
1600
AB-03SL
160
1200
AB-03SLA
80
1200
f Boron
�— Strontium
1400
1100
140
1100
5000
—I]--Manganese
1000
�
Sulfate
J
J
1200
�
E
0) 1000
120 �
� 900
60
0)
0
4000
c
c
c
1000
0
.2 900
100 0
800
p
i
co
.2
200
co
3000
800
c
U
c 800
U
80
c
U
40
250
(DU
c
g
2000
600
0
U
a)
0
U 200
c
f Boron
60 U
0 150
c
-AV-Boron
C
U
L
w
:E
­v— Strontium
2
­�— Strontium
.2
_
—0—Manganese
100
� Manganese
cn
m
400
�
o7
150
U
f Sulfate
; o
40 5
1:c2
(
Sulfate
20
,2
5
1000
c0 100
U)
Ed
U)
200
50
20
1
50
0
0
1/1/15
1/1/16
1/1/17 1/1/18 1/1/19
0
0
0
0
1/1/15 1/1/16
1/1/17
1/1/18 1/1/19
1/1/15
1/1/16
1/1/17 1/1/18 1/1/19
Time
Time
Time
AB-031
AB-03BRUA
1400
50
700
250
f Boron
­v— Strontium
+ Boron
­v— Strontium
1200
45
650
600
Manganese
—0— Manganese
Sulfate
40
200
J 550
+ Sulfate
J
1000
35
E
500
E
o
c
0 450
�-
c
800
30
0
io
400
150 0
25
°; 350
Time -series
plots for AAB West
U
�
U
Continued on Figures 3-42 through 3-43
9 9
U
600
20
U
U 300
100 0
cc
250
400
15
200
U
cp
10
U)
m 150
50
200
100
5
50
0
0
0
0
1/1/15
1/1/16
1/1/17 1/1/18 1/1/19
1/1/15
1/1/16
1/1/17
1/1/18
1/1/19
Time
Time
Reference
Boron Strontium Manganese Sulfate
Reporting Limits
148 RIVER STREET, SUITE 220
FIGURE 3-41
LEGEND Criteria
(kg/L.) (kg/L.) (kg/L.) (mg/L.)
Boron (fag/L) 50
GREENVILLE,
SOUTH CAROLINA
29601PHONE:[phone]
TIME -SERIES PLOTS
700 N/A 50 250
Strontium 5
AAB WEST 1
IMAC
IM
N/A N/A N/A N/A
Manganese (fag/L) 5
(pg/
synTerra
BTV (S)
50 36.71 168.8 1.169
Sulfate (mg/L) 1
www.synterracorp.com
2018 CAMA ANNUAL
BTV (D)
50 56.14 78.31 10
INTERIM MONITORING REPORT
BTV (BR)
50 107.1 89.4 15.1
DUKE
DRAWN BY:
PROJECTMANAGER:
P. BURDETTE DATE: 4/8/2019
S.SPINNER
CLIFFSIDE STEAM STATIONENERGY.
Notes: N/A = Not Applicable
BTV =Background Threshold Value S =Shallow
D =
Deep/Transition Zone
CHECKED BY:
H. GARRETT
DUKE ENERGY CAROLINAS, LLC
BR =Bedrock
IMAC =Interim Maximum Allowable Concentration �Jg/L =micrograms per liter
mg/L
= milligrams per liter
CAROLINAS
MOORESBORO, NORTH CAROLINA

AB-02S
CCR-11 S
40000
60
1400
250
30000
Boron
­v— Strontium
50
1200
Boron
+Sulfate
� Manganese
�
200
20000
+ Sulfate
J
E
1000
E
O
10000
40
o
O
—
o
m
800
150
c
900
30
Time -series plots for AAB West
c
C
v
a
Continued on Figure 3-43
v 600
100
a
600
20
a)
g
400
pp
�
pp
50
�
300
10
200
0
0
0
0
1/1/15
1/1/16
1/1/17
1/1/18
1/1/19
1/1/15
1/1/16
1/1/17 1/1/18 1/1/19
Time
Time
AB-02D
CCR-09D
CCR-11 D
5000
60
1400
700
1400
250
4500
R
/ \
600
1300
+ Boron
� Sulfate
/�
50
� Boron
4000
J 1200
Sulfate
J
200
J
J
6 1200
500
E
0
is
L
3500
3000
40
o
is 1000
400 m
0 1100
is
L
150
c
.2
c
Boron
�C
L
E� 1000
a
30
a)
a)
c�i 200
c
2500
�— Strontium
Cj
Manganese
O
U 800
300 o
U
100
O
c
2000
f Sulfate
)
150
U
20
i
200
1500
(n
5
U) 100
00
pp 600
U7
00
50
400/
10
100
50
200
0
0
400
0
0
0
1/1/15
1/1/16
1/1/17
1/1/18
1/1/19
1/1/15
1/1/16
1/1/17 1/1/18
1/1/19
1/1/15
1/1/16
1/1/17 1/1/18 1/1/19
Time
Time
Time
Reference
Boron
Strontium
Manganese
Sulfate
Reporting Limits
148 RIVER STREET, SUITE 220
FIGURE 3-42
LEGEND Criteria
(kg/L)
(kg/L)
(ka/L)
(ma/L)
Boron (fag/L) 50
GREEN ILLE,S
GREENVILLE,
SOUTH CAROLINA
29601
TIME -SERIES PLOTS
700
N/A
250
Strontium (ug/L) 5
PHONETerra
1-9999
AAB WEST 2
IM
IMAC
N/A
N/A
N/A
/
N/A
Manganese (fag/L) 5
BTV (S)
50
36.71
168.8
1.169
Sulfate (mg/L) 1
www.synterracorp.com
2018 CAMA ANNUAL
BTV (D)
50
56.14
78.31
10
INTERIM MONITORING REPORT
BTV (BR)
50
107.1
89.4
15.1
� DUKE
DRAWN BY:
PROJECT MANAGER:
P. BURDETTE
S.SPINNER
DATE: 4/8/2019
CLIFFSIDE STEAM STATION
Notes: N/A =
Not Applicable
BTV
= Background Threshold Value
S = Shallow
D = Deep/Transition
Zone
ENERGY
CHECKED BY:
H. GARRETT
DUKE ENERGY CAROLINAS, LLC
BR =
Bedrock IMAC =
Interim
Maximum Allowable Concentration pg/L = micrograms
per liter
mg/L
= milligrams per liter
CAROLINAS
MOORESBORO, NORTH CAROLINA

GWA-20S
14000
250
12000
+ Boron
­�— Strontium
10000
--c— Manganese
�
c
8000
6000
Sulfate
200
J
E
�-
O
4000
c
0
2000�
150
•�
c
aoo�
°;
Not Applicable
Not Applicable
U
100
U
300
m
42
'1^-
V/
200
pp
50
67
100
0 0
1/1/15 1/1/16
1/1/17
1/1/18 1/1/19
Time
GWA-20D
GWA-20BR
250
1000
250
8000
7500
f Boron
Boron
­v— Strontium
Strontium
7000
Manganese
Manganese
g
J
6500
Sulfate
200
800
Sulfate
200
E
Ec
c
6000
o
c
o
c
5500
150
.2
m 600
150 .2
L
L76
c
o
5000
c
`
1000
a
a)
Not Applicable
O
c
O
U
c
800
100
U
400
100 U
600
42
w
U
U
CO
400
50
U)
o? 200
50 07
200
0
0
0
0
1/1/15 1/1/16
1/1/17
1/1/18 1/1/19
1/1/15
1/1/16
1/1/17 1/1/18
1/1/19
Time
Time
Reference
Boron Strontium
Manganese Sulfate
Reporting Limits
148 RIVER STREET, SUITE 220
FIGURE 3-43
LEGEND Criteria
(kg/L) (kg/L)
(kg/L) (mg/L)
Boron (fag/L) 50
GREENVILLE, SOUTH CAROLINA 29601
GREEN ILLE,S
TIME -SERIES PLOTS
700 N/A
250
Strontium 5
1-9999
PHONEsynTerra
AAB WEST 3
IM
IMAC
N/A N/A
N/A N/A
/
Manganese (fag/L) 5
(pg/
BTV (S)
50 36.71
168.8 1.169
Sulfate (mg/L) 1
www.synterracorp.com
2018 CAMA ANNUAL
BTV (D)
50 56.14
78.31 10
INTERIM MONITORING REPORT
BTV (BR)
50 107.1
89.4 15.1
� DUKE
DRAWN BY: P. BURDETTE DATE: 4/8/2019
PROJECT MANAGER: S.SPINNER
CLIFFSIDE STEAM STATION
Notes: N/A = Not Applicable
BTV = Background Threshold Value S = Shallow
D = Deep/Transition
Zone
ENERGY
CHECKED BY: H. GARRETT
DUKE ENERGY CAROLINAS, LLC
BR = Bedrock IMAC = Interim Maximum Allowable Concentration pg/L = micrograms
per liter
mg/L = milligrams per liter
CAROLINAS
MOORESBORO, NORTH CAROLINA

AB-06S
CCR-16S
12000
350
3000
250
Boron
�— Strontium
Manganese
10000
J
300
J
2500
Boron
+Sulfate
200
0 Sulfate
J
J
250
E
E
0
8000
0
2000
L
200
p
co
—
p
6000
L
Time -series plots for AAB South
1500
U
150
o
Continued on Figure 3-45
o
c
U
U
100
U
�
g
4000
(D
g
1000
a)
L
100
—
,,^
v/
-5
Vl
`L^
V!
�
)
m
2000
50
00
500
50
0
0
0
0
1/1/16
1/1/17 1/1/18 1/1/19
1/1/15
1/1/16 1/1/17 1/1/18 1/1/19
1/1/15
Time
Time
AB-06D
AB-06BR
CCR-16D
160
350
160
350
3000
250
140
f Boron
­v— Strontium
300
140
--9- Boron
—v— Strontium
300
_
—D—Manganese
—D—Manganese
J
2500
Sulfate
200
120
Sulfate
120
Sulfate
�_
J
250
E
�
250
E
0
100
0
o
°
a
2000
o
co
100
o
co
150
200
c"Lo
200
80
a)
80
01500
aa)
U
150
o
U
150 o
U
100
p
60
U
60
U
7
1000
a>
L
100
(0
L
100
m40
�
cn
40
50
U)
m
(n
m
500
20
50
20
50
0
0
0
0
0
1/1/15
1/1/16 1/1/17 1/1/18 1/1/19
0
1/1/15 1/1/16 1/1/17 1/1/18 1/1/19
1/1/15
1/1/16
1/1/17 1/1/18 1/1/19
Time
Time
Time
Reference Boron Strontium
Manganese
Sulfate
Reporting Limits
148 RIVER STREET, SUITE 220
FIGURE 3-44
LEGEND Criteria (ka/L) (kg/L.)
(kg/L.)
(mg/L.)
Boron (fag/L)
50
GREENVILLE, SOUTH
CAROLINA
29601PHONE:[phone]
TIME -SERIES PLOTS
700 N/A
50
250
Strontium
5
AAB SOUTH 1
IMAC N/A N/A
IM
N/A
N/A
Manganese (fag/L)
(pg/
5
synTerra
BTV (S) 50 36.71
168.8
1.169
Sulfate (mg/L)
1
www.synterracorp.com
2018 CAMA ANNUAL
BTV (D) 50 56.14
78.31
10
INTERIM MONITORING REPORT
BTV (BR) 50 107.1
89.4
15.1
� DUKE
DRAWN BY: P. BURDETTE DATE: 4/8/2019
PROJECT MANAGER: S.SPINNER
CLIFFSIDE STEAM STATION
Notes: N/A = Not Applicable BTV = Background Threshold Value S =
Shallow
D =
Deep/Transition Zone
ENERGY
CHECKED BY: H. GARRETT
DUKE ENERGY CAROLINAS, LLC
BR =
Bedrock IMAC = Interim Maximum Allowable Concentration
pg/L
= micrograms per liter
mg/L
= milligrams per liter
CAROLINAS
MOORESBORO, NORTH CAROLINA

GWA-27DA
1800
250
1600
1400
200
J_
1200
E
E
c
.� 1000
--
150
L
Not Applicable
800
c 150
a
Not Applicable
o
c
U
100
c
U
100
VJ
m
Boron
50 U)
50
­v— Strontium
—0— Manganese
Sulfate
0 0
1/1/15 1/1/16
1/1/17
1/1/18
1/1/19
Time
GWA-47D
GWA-27BR
1800
250
1800
250
1600
--0- Boron
t Strontium
1600
f Boron
—0— Manganese
200
­v— Strontium
200
1400
f Sulfate
1400
� Manganese
J
ESulfate
E
0
1200
0 1200
is
150
M
150 •�
C
1000
1000
0
800
C 800
Not Applicable
100
100
U
0
U
600
g 600
a)
L
L
m400
50
U)
m 400
50 07
200
200
0 0
0 0
1/1/15
1/1/16
1/1/17 1/1/18 1/1/19
1/1/15 1/1/16
1/1/17
1/1/18
1/1/19
Time
Time
Reference
Boron Strontium Manganese Sulfate
Reporting Limits
148 RIVER STREET, SUITE 220
FIGURE 3-45
LEGEND Criteria
(ka/L) (ka/L) (ka/L) (ma/L)
Boron (fag/L) 50
GREENVILLE, SOUTH CAROLINA 29601
TIME -SERIES PLOTS
700 N/A 50 250
Strontium 5
PHONE:[phone]
AAB SOUTH 2
IM
IMAC
N/A N/A N/A N/A
Manganese (fag/L) 5
(pg/
synTerra
BTV (S)
50 36.71 168.8 1.169
Sulfate (mg/L) 1
www.synterracorp.com
2018 CAMA ANNUAL
BTV (D)
50 56.14 78.31 10
INTERIM MONITORING REPORT
BTV (BR)
50 107.1 89.4 15.1
� DUKE
DRAWN BY: P. BURDETTE DATE: 4/8/2019
PROJECT MANAGER: S.SPINNER
CLIFFSIDE STEAM STATION
Notes: N/A =
Not Applicable
BTV = Background Threshold Value S = Shallow
D = Deep/Transition
Zone
ENERGY
CHECKED BY: H. GARRETT
DUKE ENERGY CAROLINAS, LLC
BR =
Bedrock IMAC
= Interim Maximum Allowable Concentration pg/L
= micrograms
per liter
mg/L
= milligrams per liter
CAROLINAS
MOORESBORO, NORTH CAROLINA

GWA-10S
GWA-11 S
CCR-IB-01 S
2000
800
4000
500
2500
75
—0-- Boron
�— Strontium
3500
Boron
�— Strontium
70
65
1600
—0— Manganese
--0— Manganese
400
60
Sulfate
600
3000
Sulfate
2250
_
E
E
55
E
a
C:
° 2500
a
C
50
io
1200
io
300 •—
45
0
L
�
2000
40
a)
400
c
m 2000
+ Boron
c
L)
c
L)
c
Strontium
35
a)
O
800
0j
O
200
O
—0— Manganese
30
c
1500
U
Sulfate
U
1750
25
N
cn
200
cn 1000
M
U)
20
pp
400
U
m
100 U)
m
15
5
(n
500
500
10
�♦
250
5
0
0
0
0
0
0
1/1/15
1/1/16
1/1/17
1/1/18
1/1/19
1/1/15
1/1/16 1/1/17
1/1/18 1/1/19
1/1/15 1/1/16
1/1/17 1/1/18 1/1/19
Time
Time
Time
GWA-10D
GWA-11 BRU
CCR-IB-01 D
3000
80
2000
200
180
18
Boron
70
1750
Boron
­v— Strontium
180
160
16
2500
— — Strontium
—I]-- Manganese
--0— Manganese
f Sulfate
160
140
14
Sulfate
60
1500
140 E
E
C
2000
g
120
12
50 0
co 1250
120 o
--*— Boron
p
C6
100
�— Strontium
10
40
100
nese
Manga1500
a)1000
a)+
Sulfate
U
o
U
o
c
80
U
80
8
0
C
30
750
U
U
g
1000
g
(D
g
60
6
a)
60
cn
20 �
to
cn 500
U
73
�
m
500
CI
40 U)
m
40
4
U)
10
250
20
20
2
0
0
0
0
0
0
1/1/15
1/1/16
1/1/17
1/1/18
1/1/19
1/1/15
1/1/16 1/1/17
1/1/18 1/1/19
1/1/15
1/1/16
1/1/17 1/1/18 1/1/19
Time
Time
Time
Reference Boron Strontium
Manganese
Sulfate
Reporting Limits
148 RIVER STREET, SUITE 220
FIGURE 3-46
LEGEND
Criteria (kg/L)
(kg/L)
(kg/L)
(mg/L)
Boron (fag/L)
50
GREEN ILLE,S
GREENVILLE, SOUTH
CAROLINA
29601
TIME -SERIES PLOTS
700 N/A
250
Strontium
5
PHONEsynTerra
1-9999
U1-4 BASIN
IM
IMAC
N/A N/A
N/A
/
N/A
Manganese (fag/L)
(pg/
5
BTV (S)
50 36.71
168.8
1.169
Sulfate (mg/L)
1
www.synterracorp.com
2018 CAMA ANNUAL
BTV (D)
50 56.14
78.31
10
INTERIM MONITORING REPORT
BTV (BR)
50 107.1
89.4
15.1
DUKE
DRAWN BY: P. BURDETTE
DATE: 4/8/2019
CLIFFSIDE STEAM STATIONENERGY.
Notes: N/A
= Not Applicable BTV =Background Threshold Value S
=Shallow
D =
Deep/Transition Zone
PROJECTMANAGER: S.SPINNER
CHECKED BY: H. GARRETT
DUKE ENERGY CAROLINAS, LLC
BR
=Bedrock IMAC =Interim Maximum Allowable
Concentration �Jg/L =micrograms
per liter
mg/L = milligrams per liter
CAROLINAS
MOORESBORO, NORTH CAROLINA

CCR-U5-08S
GWA-04S
GWA-37S
700
500
2600 500
10000 500
_
f Sulfate
2400
Boron
�— Strontium
450
� Boron
�— Strontium
450
450
600
—D—Manganese
400
2200
�
Sulfate
400 J
J 8000
Manganese
� Sulfate
400 J
_
J
2000
0>
O)
0) 500
350 E
350 E
350 E
p 1800
o
6000
400
300
cu 1600
300
300 •2
250 N
700
250
250
o
120
0 300
200 U
U 600
200 0
U
200 U
500
100
0
0 200
150
� 400
150
—5
80
cn
150 �p
m
100
m 300
100 U)
Ed 60
100
100
200
50
40
-
50
50
100
20
0
0
0
0
0
0
1/1/15
1/1/16 1/1/17 1/1/18 1/1/19
1/1/15 1/1/16 1/1/17 1/1/18 1/1/19
1/1/15 1/1/16 1/1/17 1/1/18 1/1/19
Time
Time
Time
CCR-U5-08D
GWA-04D
GWA-37D
700
600
500
450
6000
500
450
700
600
500
450
f Boron
Sulfate
5500
5000
+ Boron
— Strontium
—0—�Manganese
�— + Boron
Strontium
—0—Manganese
400 _
J 4500
Sulfate
400
J
J
+ Sulfate
400
J
500
J
350 E
4000
350 E
0
500
J
350 E
g 3500
c
o
C
400
300
3000
300 O
75
400
300 p
250
v 2500
250
cOi
250
v
0 300
�
O 2000
200 0
O 300
v
200 0
500
200 U
0 200
150 a)
400150
200
150
m
100 U7
CIS
100 100 �
m
100 U)
100
200
100
50
100
50
50
0
0
0
0
0
0
1/1/15
1/1/16 1/1/17 1/1/18 1/1/19
1/1/15 1/1/16 1/1/17 1/1/18 1/1/19
1/1/15
1/1/16 1/1/17 1/1/18 1/1/19
Time
Time
Time
Reference Boron Strontium Manganese Sulfate Reporting Limits
148 RIVER STREET, SUITE 220
FIGURE 3-47
LEGEND Criteria (ka/L) (ka/L) (ka/L) (mg/L.) Boron (fag/L) 50
GREENVILLE, SOUTH CAROLINA 29601
GREEN ILLE,S
TIME -SERIES PLOTS
700 N/A 50 250 strontium (ug/L) 5
1-9999
PHONETerra
U5 BASIN EAST
IM
IMAC N/A N/A N/A N/A Manganese (fag/L) 5
BTV (S) 50 36.71 168.8 1.169 Sulfate (mg/L) 1
www.synterracorp.com
2018 CAMA ANNUAL
BTV (D) 50 56.14 78.31 10
INTERIM MONITORING REPORT
BTV (BR) 50 107.1 89.4 15.1
� DUKE
DRAWN BY: J. THAD DATE: 4/8/2019
PROJECT MANAGER: S.SPINNER
CLIFFSIDE STEAM STATION
Notes: N/A = Not Applicable BTV = Background Threshold Value S = Shallow D = Deep/Transition Zone
ENERGY
CHECKED BY: H. GARRETT
DUKE ENERGY CAROLINAS, LLC
BR = Bedrock IMAC = Interim Maximum Allowable Concentration pg/L = micrograms per liter
mg/L = milligrams per liter
CAROLINAS
MOORESBORO, NORTH CAROLINA

U5-02S-SLA
CCR-U5-03S
3000
250
1400
1200
--0- Boron
­v— Strontium
_D_ Manganese
250
200
Boron
­v— Strontium
J 2500 —E�— Manganese 200
Sulfate
J
Sulfate
�
�
J
C
2000
E
O
O1
O
75
150
c
1000
150
c
O
_
co
o
1500
co
Time -series plots for U5 Basin West
0 300
c
�j
100
0
Continued on Figure 3-49
0
100
0
1000
U
c
U
200
O
L
O
m
500
50
m 100
50
0
L0
0 0
1/1/15
1/1/16
1/1/17 1/1/18
1/1/19
1/1/15
1/1/16
1/1/17 1/1/18 1/1/19
Time
Time
U5-02D
U5-02BR
CCR-U5-03D
3000
250
250
250
Boron
­�— Strontium
—0—Manganese
8000
6000
-0-- Boron
­�— Strontium
Manganese
2400
2200
--0- Boron
�— Strontium
--0--Manganese
2500
J
200
200
200
Sulfate
Sulfate
Sulfate
2000
c
2000
E
4000
E
E
0
150
c
150 c
co
150
Ch
c
O
O
1800
0
a)
1500
m
a) 2000
is
aco
c
600
c
400
c
O
U
100
�
U 500
100 c
0
100
C:
7
1000
Cj
C
2 400
0
c 300
0
U
O�
OU)
07
cn 300
UO
cn 200
m
500
50
m 200
50
m
50
100
100
0
0
0
0
0
0
1/1/15
1/1/16
1/1/17 1/1/18
1/1/19
1/1/15 1/1/16 1/1/17
1/1/18
1/1/19
1/1/15
1/1/16
1/1/17 1/1/18 1/1/19
Time
Time
Time
Reference
Boron Strontium Manganese
Sulfate
Reporting Limits
148 RIVER STREET, SUITE 220
FIGURE 3-48
LEGEND
Criteria
(kg/L) (kg/L) (kg/L)
(mg/L.)
Boron (fag/L) 50
GREEN ILLE,S
GREENVILLE, SOUTH CAROLINA
29601
TIME -SERIES PLOTS
700 N/A
250
strontium 5
PHONEsynTerra
1-9999
U5 BASIN WEST 1
IM
IMAC
N/A N/A N/A
/
N/A
Manganese (fag/L) 5
(pg/
BTV (S)
50 36.71 168.8
1.169
Sulfate (mg/L) 1
www.synterracorp.com
2018 CAMA ANNUAL
BTV (D)
50 56.14 78.31
10
INTERIM MONITORING REPORT
BTV (BR)
50 107.1 89.4
15.1
DUKE
DRAWN BY: G. BARRIER
PROJECTMANAGER: S.SPINNER
DATE: 4/8/2019
CLIFFSIDE STEAM STATIONENERGY.
Notes: N/A = Not Applicable
BTV =Background Threshold Value
S =Shallow
D = Deep/Transition Zone
CHECKED BY: H. GARRETT
DUKE ENERGY CAROLINAS, LLC
BR =Bedrock IMAC
=Interim Maximum Allowable Concentration �Jg/L
=micrograms per liter
mg/L = milligrams per liter
CAROLINAS
MOORESBORO, NORTH CAROLINA

CCR-U5-04S
GWA-02S
700
250
2200
500
450
—0--Boron
2100
600
­v— Strontium
400
_
Manganese
200
2000
�1
a)
Sulfate
J
700
350
6
E
" 500
Cn
c
c
150
600
300
c
0
P
2 400
�
0
m
500
250
N
100
0
Not Applicable
Lj
400
200
°;
300
U
300
150
0
0
50
O
200
O
f Boron
cn
cn
o7
m
200
v._.. Strontium
100
m
—�— Manganese
100
0
100
Sulfate
50
0
0
0
1/1/15
1/1/16
1/1/17
1/1/18 1/1/19
1/1/15
1/1/16
1/1/17
1/1/18 1/1/19
Time
Time
CCR-U5-04D
GWA-02BRU
GWA-02BR
700
250
700
250
4500
4250
500
450
600
--9- Boron
­v— Strontium
600
-AV- Boron
­v— Strontium
E
—o— Manganese
—E�— Manganese
400
200
200
4000
Sulfate
J
+ Sulfate
J
cn
1050
350
J
E
500
E
(n 500
E
0
(n
o
cn
o
(n
300
0
��
@ 400
150 0
400
150 0
a)
250
c
0
c
a)
700
U
U 300
U
U 300
U
v
200
100 0
100 c
U
U
U
L
67
150
O
L 200
07
L 200
07
350
f Boron
100
07
50 07
50 07
Strontium
[o
00
Manganese
100
100
Sulfate
50
0
0
0
0
0
0
1/1/15
1/1/16
1/1/17
1/1/18
1/1/19
1/1/15 1/1/16
1/1/17
1/1/18 1/1/19
1/1/15
1/1/16
1/1/17 1/1/18 1/1/19
Time
Time
Time
Reference
Boron
Strontium
Manganese
Sulfate
Reporting Limits
148 RIVER STREET, SUITE 220
FIGURE 3-49
LEGEND Criteria
(kg/L)
(kg/L)
(kg/L)
(mg/L.)
Boron (fag/L) 50
GREEN ILLE,S
GREENVILLE,
SOUTH CAROLINA
29601
TIME -SERIES PLOTS
700
N/A
250
Strontium 5
PHONEsynTerra
1-9999
U5 BASIN WEST 2
IM
IMAC
N/A
N/A
N/A
/
N/A
Manganese (fag/L) 5
(pg/
BTV (S)
50
36.71
168.8
1.169
Sulfate (mg/L) 1
www.synterracorp.com
2018 CAMA ANNUAL
BTV (D)
50
56.14
78.31
10
INTERIM MONITORING REPORT
BTV (BR)
50
107.1
89.4
15.1
DUKE
DRAWN BY:
PROJECT MANAGER:
G. BARRIER
S.SPINNER
DATE: 4/8/2019
CLIFFSIDE STEAM STATION
Notes: N/A =
Not Applicable
BTV =
Background Threshold Value S =
Shallow
D =
Deep/Transition Zone
44t
ENERGY
CHECKED BY:
H. GARRETT
DUKE ENERGY CAROLINAS, LLC
BR =
Bedrock IMAC = Interim Maximum Allowable Concentration
pg/L
= micrograms per liter
mg/L
= milligrams per liter
CAROLINAS
MOORESBORO, NORTH CAROLINA

2018 CAMA Annual Interim Monitoring Report April 30, 2019
Duke Energy Carolinas, LLC - Rogers Energy Complex - Cliffside Steam Station SynTerra
TABLES

TABLE 1-1
MONITORING WELL CONSTRUCTION INFORMATION
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS, LLC, MOORESBORO, NC
Well ID
Date
Installed
Monitoring Zone
Material
Diameter
(Inches)
Northing
(Ft-NAD 83)
Easting
(Ft-NAD 83)
Measuring Point
TOC Elevation
(Ft-NAVD 88)
Ground Surface
Elevation
(Ft-NAVD 88)
Boring
1 Z
Depth '
(Ft-BGS)
SurfaceTotal
Casing
Depth
(Ft-BGS)
Well
Depth
(Ft-BGS)
Screened
Z
Interval
(Feet-BGS)
Top of Screen
Elevation
(Ft-NAVD 88)
Bottom of Screen
Elevation
(Ft-NAVD 88)
AB-iBRO
11/9/2017
Bedrock
PVC
2
545332.78
1179479.24
773.58
773.94
--
127.0
598.94
--
--
--
--
AB-1BROR
4/6/2018
Bedrock
PVC
4
--
--
--
--
176.0
126.5
--
--
--
--
--
AB-1D
6/4/2015
Deep
PVC
2
545332.08
1179466.53
773.44
773.73
135.5
119.4
647.23
121.5
126.5
652.23
647.23
AB-1S
6/2/2015
Shallow
PVC
2
545330.77
1179457.78
773.19
773.80
109.0
--
704.80
54.0
69.0
719.80
704.80
AB-2BRO
11/8/2017
Bedrock
PVC
2
544316.70
1177112.31
773.47
773.75
170.0
80.0
701.75
--
--
--
--
AB-21D
5/4/2015
Deep
PVC
2
544298.96
1177102.27
773.00
773.47
80.5
64.5
695.97
72.5
77.5
700.97
695.97
AB-2S
4/29/2015
Shallow
PVC
2
544305.19
1177106.20
772.92
773.53
49.0
--
724.53
44.0
49.0
729.53
724.53
AB-3-APW
5/9/2018
Ash Pore Water
PVC
6
543980.74
1178029.02
796.85
793.69
75.0
--
724.69
58.0
68.0
735.69
725.69
AB-3BR
2/26/2016
Bedrock
PVC
2
543931.26
1178015.85
796.55
793.41
187.0
119.0
607.91
175.5
185.5
617.91
607.91
AB-3BRU
4/2/2015
Deep
PVC
2
543946.27
1178033.57
795.78
793.88
130.5
115.5
670.81
118.0
123.0
675.88
670.88
AB-3BRUA
4/7/2017
Deep
PVC
2
543918.45
1177995.39
796.02
793.26
130.0
--
663.26
125.0
130.0
668.26
663.26
AB-3-LA15
5/8/2018
Ash Pore Water
PVC
2
543963.50
1178031.74
796.86
793.58
76.0
--
720.58
67.5
72.5
726.08
721.08
AB-3-MA15
5/8/2018
Ash Pore Water
PVC
2
543970.18
1178038.21
796.78
793.72
61.0
--
732.52
56.2
61.2
737.52
732.52
AB-3-MA30
5/10/2018
Ash Pore Water
PVC
2
543999.67
1178006.08
797.01
793.88
62.0
--
731.88
54.7
59.7
739.18
734.18
AB-3SLA
10/20/2017
Ash Pore Water
PVC
2
543965.20
1178056.53
796.90
793.75
72.0
--
723.75
60.0
70.0
733.75
723.75
AB-3I
4/10/2015
Shallow
PVC
2
543941.37
1178027.86
795.97
793.82
105.0
--
691.72
92.0
102.0
701.82
691.82
AB-3S
3/19/2015
Ash Pore Water
PVC
2
543959.27
1178050.31
795.64
793.88
37.0
--
756.77
22.0
37.0
771.88
756.88
AB-3SL
3/20/2015
Ash Pore Water
PVC
2
543953.91
1178043.47
796.02
793.97
72.2
--
721.64
62.2
72.2
731.77
721.77
AB-3-SPW
5/10/2018
Shallow
PVC
6
543966.54
1178009.45
796.40
793.78
105.0
--
688.78
92.0
102.0
701.78
691.78
AB-3-UA15
5/8/2018
Ash Pore Water
PVC
2
543970.18
1178038.21
796.78
793.80
46.0
--
747.80
39.3
44.3
754.50
749.50
AB-4-APW
5/8/2018
Ash Pore Water
PVC
6
543715.56
1178849.00
771.25
768.34
42.0
--
729.34
28.0
38.0
740.34
730.34
AB-4BR
4/28/2015
Bedrock
PVC
2
543722.93
1178887.51
770.66
768.56
120.6
52.5
659.06
104.5
109.5
664.06
659.06
AB-41D
3/28/2015
Deep
PVC
2
543723.87
1178896.54
770.59
768.54
70.4
53.1
708.54
55.0
60.0
713.54
708.54
AB-4-LA15
5/9/2018
Ash Pore Water
PVC
2
543708.81
1178834.06
771.10
768.08
41.0
--
729.08
32.4
37.4
735.68
730.68
AB-4-UA15
5/10/2018
Ash Pore Water
PVC
2
543720.55
1178862.29
771.62
768.22
21.0
--
747.22
14.9
19.9
753.32
748.32
AB-4S
3/30/2015
Ash Pore Water
PVC
2
543721.76
1178877.73
770.59
768.51
20.3
--
748.51
5.0
20.0
763.51
748.51
AB-4SL
3/25/2015
Ash Pore Water
PVC
2
543721.09
1178871.93
770.61
768.51
39.0
--
739.81
28.7
38.7
739.81
729.81
AB-5BR
3/1/2016
Bedrock
PVC
2
542961.78
1179103.52
772.13
769.10
114.0
--
673.00
91.2
96.1
677.90
673.00
AB-5BRU
3/24/2015
Deep
PVC
2
542963.70
1179112.82
771.81
769.72
68.2
49.5
704.22
60.5
65.5
709.22
704.22
AB-5S
3/27/2015
Ash Pore Water
PVC
2
542958.87
1179111.06
771.74
769.69
43.0
--
746.69
5.0
20.0
764.69
749.69
AB-6BR
4/22/2015
Bedrock
PVC
2
542716.60
1178350.92
770.61
768.46
110.5
60.5
667.61
96.0
101.0
672.46
667.46
AB-61D
3/24/2015
Deep
PVC
2
542709.35
1178397.12
770.68
768.57
76.5
56.5
697.83
65.8
70.8
702.77
697.77
AB-6S
3/26/2015
Ash Pore Water
PVC
2
542714.00
1178366.14
770.56
786.41
21.0
--
766.48
5.0
20.0
781.41
766.41
AD1-1
9/4/2017
Shallow
PVC
2
546332.27
1172442.60
688.44
685.86
30.0
--
685.86
15.0
30.0
670.86
655.86
Page 1 of 10

TABLE 1-1
MONITORING WELL CONSTRUCTION INFORMATION
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS, LLC, MOORESBORO, NC
Well ID
Date
Installed
Monitoring Zone
Material
Diameter
(Inches)
Northing
(Ft-NAD 83)
Easting
(Ft-NAD 83)
Measuring Point
TOC Elevation
(Ft-NAVD 88)
Ground Surface
Elevation
(Ft-NAVD 88)
Boring
1 Z
Depth '
(Ft-BGS)
SurfaceTotal
Casing
Depth
(Ft-BGS)
Well
Depth
(Ft-BGS)
Screened
Z
Interval
(Feet-BGS)
Top of Screen
Elevation
(Ft-NAVD 88)
Bottom of Screen
Elevation
(Ft-NAVD 88)
AD2-1
9/4/2017
Shallow
PVC
2
546287.08
1172609.13
691.29
688.50
30.0
--
688.50
15.0
30.0
673.50
658.50
AD2-2
9/4/2017
Shallow
PVC
2
546110.03
1172499.77
682.40
679.61
25.0
--
679.61
9.0
24.0
670.61
655.61
AD2-3
9/4/2017
Shallow
PVC
2
546114.16
1172582.49
682.63
680.33
30.0
--
680.33
15.0
30.0
665.33
650.33
AD2-4
9/4/2017
Shallow
PVC
2
546236.51
1172558.54
694.48
692.15
35.0
--
692.15
20.0
35.0
672.15
657.15
AD3-1
9/4/2017
Shallow
PVC
2
546050.44
1173268.70
684.64
681.76
23.7
--
681.76
8.7
23.7
673.06
658.06
AD3-2
9/4/2017
Shallow
PVC
2
545984.75
1173167.71
680.62
678.18
22.5
--
678.18
7.5
22.5
670.68
655.68
AS-1D
5/26/2015
Deep
PVC
2
544824.26
1177989.02
809.41
807.68
131.5
--
696.68
106.0
111.0
701.68
696.68
AS-1SB
5/18/2015
Shallow
PVC
2
544826.09
1177983.86
809.20
807.46
100.0
--
708.46
83.0
98.0
724.46
709.46
AS-2BR
9/23/2016
Bedrock
PVC
2
545488.11
1177805.06
698.74
697.12
--
--
600.12
92.0
97.0
605.12
600.12
AS-2D
5/18/2015
Deep
PVC
2
545499.30
1177801.35
697.26
695.62
68.3
53.3
635.62
55.0
60.0
640.62
635.62
AS-2S
5/12/2015
Shallow
PVC
2
545494.72
1177817.37
697.84
695.93
33.5
--
665.43
15.5
30.5
680.43
665.43
AS-3BRU
5/15/2015
Deep
PVC
2
545386.76
1178583.59
754.16
752.59
55.5
13.8
699.10
48.5
53.5
704.10
699.10
AS-4D
5/26/2015
Deep
PVC
2
544888.58
1178502.06
837.71
835.82
112.2
92.2
735.82
95.0
100.0
740.82
735.82
AS-4S
5/28/2015
Shallow
PVC
2
544893.77
1178495.92
837.49
835.67
95.0
--
741.27
84.4
94.4
751.27
741.27
AS-5BR
5/8/2015
Bedrock
PVC
2
545349.36
1178357.59
739.77
739.90
119.9
70.3
659.80
75.1
80.1
664.80
659.80
AS-5BRU
4/21/2015
Deep
PVC
2
545349.10
1178362.70
740.45
740.59
63.0
48.0
680.59
55.0
60.0
685.59
680.59
AS-5S
4/16/2015
Shallow
PVC
2
545349.81
1178351.05
739.72
739.90
45.3
--
695.65
29.3
44.3
710.65
695.65
AS-6BR
6/18/2015
Bedrock
PVC
2
545108.97
1178477.25
817.89
816.04
185.7
134.2
657.94
153.1
158.1
662.94
657.94
AS-6BRA
4/4/2017
Bedrock
PVC
2
545090.85
1178480.08
822.29
818.86
--
--
660.36
153.5
158.5
665.36
660.36
AS-6D
6/12/2015
Deep
PVC
2
545101.08
1178487.30
818.30
816.59
135.5
120.2
688.59
123.0
128.0
693.59
688.59
AS-6S
6/1/2015
Shallow
PVC
2
545112.15
1178486.75
817.74
816.09
101.5
--
715.09
86.0
101.0
730.09
715.09
AS-7BR
6/10/2015
Bedrock
PVC
2
545161.83
1177998.47
742.70
740.83
142.1
90.6
613.83
122.0
127.0
618.83
613.83
AS-7BRA
4/6/2017
Bedrock
PVC
2
545197.73
1177993.67
737.25
734.36
130.5
--
604.37
120.0
130.0
614.37
604.37
AS-7D
5/30/2015
Deep
PVC
2
545161.95
1178002.80
742.90
741.04
92.5
62.5
653.54
82.5
87.5
658.54
653.54
AS-7I
7/18/2018
Shallow
PVC
2
545219.64
1177996.97
735.66
732.89
64.0
--
668.89
57.0
62.0
675.89
670.89
AS-7S
6/10/2015
Ash Pore Water
PVC
2
545162.39
1177993.46
742.06
740.61
43.8
--
697.11
28.5
43.5
712.11
697.11
AS-8D
11/1/2017
Deep
PVC
2
545336.86
1178008.05
724.95
725.04
67.9
55.0
657.14
62.9
67.9
662.14
657.14
AS-8S
10/19/2017
Ash Pore Water
PVC
2
545337.36
1178001.60
724.79
725.09
--
--
687.09
23.0
38.0
702.09
687.09
BG-1BR
3/18/2015
Bedrock
PVC
2
541369.47
1177169.46
802.50
800.83
110.4
--
703.92
92.0
97.0
708.83
703.83
BG-1BRA
4/10/2017
Bedrock
PVC
2
541354.77
1177209.47
806.00
802.84
99.0
--
704.84
93.0
98.0
709.84
704.84
BG-1D
3/11/2015
Deep
PVC
2
541371.23
1177162.64
802.63
800.91
77.0
62.0
729.47
66.5
71.5
734.41
729.41
BG-1S
3/18/2015
Shallow
PVC
2
541373.37
1177156.06
802.67
800.83
35.0
--
765.82
20.0
35.0
780.82
765.82
BG-2D
3/16/2005
Deep
PVC
2
543463.45
1171516.98
846.51
844.65
62.5
--
790.65
49.0
54.0
795.65
790.65
CCPMW-ID
2/24/2010
Bedrock
PVC
2
541739.18
1171401.96
875.89
873.33
54.0
46.0
819.19
49.0
54.0
824.33
819.33
Page 2 of 10

TABLE 1-1
MONITORING WELL CONSTRUCTION INFORMATION
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS, LLC, MOORESBORO, NC
Well ID
Date
Installed
Monitoring Zone
Material
Diameter
(Inches)
Northing
(Ft-NAD 83)
Easting
(Ft-NAD 83)
Measuring Point
TOC Elevation
(Ft-NAVD 88)
Ground Surface
Elevation
(Ft-NAVD 88)
Boring
1 Z
Depth '
(Ft-BGS)
SurfaceTotal
Casing
Depth
(Ft-BGS)
Well
Depth
(Ft-BGS)
Screened
Z
Interval
(Feet-BGS)
Top of Screen
Elevation
(Ft-NAVD 88)
Bottom of Screen
Elevation
(Ft-NAVD 88)
CCPMW-1S
2/23/2010
Shallow
PVC
2
541735.11
1171400.29
875.58
873.24
40.0
--
833.34
30.0
40.0
843.24
833.24
CCPMW-2D
2/24/2010
Deep
PVC
2
540576.04
1171840.95
842.38
840.17
70.0
70.0
769.91
65.0
70.0
775.17
770.17
CCPMW-2S
2/24/2010
Shallow
PVC
2
540575.60
1171837.02
842.24
840.26
42.0
--
798.17
32.0
42.0
808.26
798.26
CCPMW-3D
7/16/2017
Deep
PVC
2
540509.40
1172353.50
811.74
810.47
31.0
--
776.55
26.0
31.0
784.47
779.47
CCPMW-3S
6/27/20017
Shallow
PVC
2
540509.78
1172347.95
811.56
810.56
14.0
--
796.54
9.0
14.0
801.56
796.56
CCPMW-4
10/26/2015
Bedrock
PVC
2
542549.85
1171270.61
845.95
843.29
65.0
--
777.62
50.0
65.0
793.29
778.29
CCPMW-5
10/23/2015
Bedrock
PVC
2
542895.88
1171866.91
858.63
855.87
72.5
--
783.23
62.5
72.5
793.37
783.37
CCPMW-6D
10/26/2015
Bedrock
PVC
2
542418.47
1172376.27
854.35
851.45
60.0
--
791.27
50.0
60.0
801.45
791.45
CCPMW-6S
10/21/2015
Shallow
PVC
2
542422.85
1172372.00
854.38
851.48
43.5
--
807.65
33.5
43.5
817.98
807.98
CCPTW-1D
7/18/2007
Deep
PVC
2
541138.87
1172408.22
838.53
836.41
66.0
--
770.30
61.0
66.0
775.41
770.41
CCPTW-1S
2/25/2010
Shallow
PVC
2
541143.89
1172409.56
838.92
836.81
35.0
--
802.14
25.0
35.0
811.81
801.81
CCPTW-2
2/25/2010
Shallow
PVC
2
540669.85
1172528.53
842.18
839.62
45.0
--
794.55
35.0
45.0
804.62
794.62
CCR-3BR
5/20/2016
Bedrock
PVC
2
545368.13
1179107.50
763.00
760.03
57.0
--
615.69
51.5
56.5
708.53
703.53
CCR-4D
5/14/2016
Deep
PVC
2
544901.23
1179171.57
781.43
778.25
25.5
--
756.12
17.5
22.5
760.75
755.75
CCR-5D
5/14/2016
Deep
PVC
2
544761.61
1178923.15
784.10
782.36
35.5
--
748.75
29.5
34.5
752.86
747.86
CCR-6D
5/23/2016
Deep
PVC
2
544535.15
1178459.79
793.86
790.79
64.0
--
727.21
58.5
63.5
732.29
727.29
CCR-6S
5/24/2016
Shallow
PVC
2
544534.11
1178456.08
793.69
790.67
45.0
--
750.34
29.0
44.0
761.67
746.67
CCR-7D
6/1/2016
Deep
PVC
2
544548.64
1178088.48
790.40
787.49
91.0
--
696.22
86.0
91.0
701.49
696.49
CCR-7S
6/2/2016
Shallow
PVC
2
544550.58
1178100.39
790.54
787.75
50.0
--
738.30
34.5
49.5
753.25
738.25
CCR-8D
6/1/2016
Deep
PVC
2
544225.45
1177702.66
798.99
796.21
50.0
--
746.13
44.5
49.5
751.71
746.71
CCR-8BR
7/17/2018
Bedrock
PVC
2
544236.43
1177699.89
801.98
799.27
87.0
--
712.27
80.4
85.4
718.87
713.87
CCR-9D
5/14/2016
Deep
PVC
2
544533.43
1177112.31
752.89
749.94
27.5
--
722.19
22.5
27.5
727.44
722.44
CCR-11D
6/3/2016
Deep
PVC
2
544160.46
1176928.56
736.83
733.74
30.0
--
704.40
24.5
29.5
709.24
704.24
CCR-11S
5/10/2016
Shallow
PVC
2
544152.71
1176927.96
737.07
733.93
20.0
--
714.27
4.5
20.0
729.43
713.93
CCR-12BR
7/18/2018
Bedrock
PVC
2
543955.73
1177092.58
770.85
768.00
107.0
--
661.00
100.0
105.0
668.00
663.00
CCR-12D
5/21/2016
Deep
PVC
2
543966.92
1177095.49
770.10
767.51
64.0
--
702.61
59.0
64.0
708.51
703.51
CCR-12S
5/13/2016
Shallow
PVC
2
543972.65
1177098.72
770.82
767.80
48.0
--
719.57
33.0
48.0
734.80
719.80
CCR-13D
5/15/2016
Deep
PVC
2
543741.79
1177428.57
787.75
784.89
36.0
--
752.37
27.0
32.0
757.89
752.89
CCR-14D
5/4/2016
Deep
PVC
2
543447.60
1177762.27
805.14
801.99
54.0
--
749.70
47.0
52.0
754.99
749.99
CCR-15D
5/26/2016
Deep
PVC
2
542952.96
1178059.05
780.40
778.22
22.5
--
758.56
15.0
20.0
763.22
758.22
CCR-16D
6/2/2016
Deep
PVC
2
542587.17
1177959.94
780.13
780.44
71.5
--
711.90
63.0
68.0
717.44
712.44
CCR-16S
5/13/2016
Shallow
PVC
2
542594.24
1177964.04
780.00
780.44
34.0
--
747.48
18.0
33.0
762.44
747.44
CCR-17BR
7/26/2018
Bedrock
PVC
2
545308.80
1180059.69
789.52
787.08
77.0
--
710.08
75.2
77.0
711.88
710.08
SCR-CCP-1D
5/31/2016
Bedrock
PVC
2
540478.61
1171188.43
878.84
874.92
62.0
--
815.59
55.0
60.0
819.92
814.92
Page 3of10

TABLE 1-1
MONITORING WELL CONSTRUCTION INFORMATION
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS, LLC, MOORESBORO, NC
Well ID
Date
Installed
Monitoring Zone
Material
Diameter
(Inches)
Northing
(Ft-NAD 83)
Easting
(Ft-NAD 83)
Measuring Point
TOC Elevation
(Ft-NAVD 88)
Ground Surface
Elevation
(Ft-NAVD 88)
Boring
1 Z
Depth '
(Ft-BGS)
SurfaceTotal
Casing
Depth
(Ft-BGS)
Well
Depth
(Ft-BGS)
Screened
Z
Interval
(Feet-BGS)
Top of Screen
Elevation
(Ft-NAVD 88)
Bottom of Screen
Elevation
(Ft-NAVD 88)
CCR-CCP-2D
5/26/2016
Deep
PVC
2
540663.08
1171437.12
870.51
867.37
56.0
--
810.20
51.0
56.0
816.37
811.37
CCR-CCP-3D
6/1/2016
Deep
PVC
2
540772.43
1171723.56
862.53
859.53
78.0
--
781.15
72.8
77.8
786.73
781.73
CCR-CCP-3DA
2/23/2017
Bedrock
PVC
2
540782.80
1171758.46
858.41
858.41
70.6
--
786.03
64.6
69.6
793.81
788.81
CCR-CCP-3S
5/21/2016
Shallow
PVC
2
540773.99
1171730.51
862.17
859.23
65.0
--
795.01
50.0
65.0
809.23
794.23
CCR-CCP-4D
6/3/2016
Deep
PVC
2
540752.80
1172032.08
855.36
852.53
60.0
--
793.88
53.0
58.0
799.53
794.53
CCR-CCP-5D
6/2/2016
Deep
PVC
2
540776.52
1172315.71
847.09
844.01
76.0
--
768.51
70.0
75.0
774.01
769.01
CCR-CCP-5S
5/23/2016
Shallow
PVC
2
540774.75
1172320.93
847.46
844.18
65.0
--
779.88
49.0
64.0
795.18
780.18
CCR-CCP-6D
5/26/2016
Deep
PVC
2
541070.37
1172342.13
834.50
834.79
100.0
--
739.09
90.0
95.0
744.79
739.79
CCR-CCP-6S
5/24/2016
Shallow
PVC
2
541062.39
1172343.46
834.19
834.63
65.0
--
773.68
45.0
60.0
789.63
774.63
CCR-CCP-7D
5/19/2016
Deep
PVC
2
541367.68
1172308.91
841.56
842.02
39.0
--
808.53
23.0
33.0
819.02
809.02
CCR-CCP-8D
5/23/2016
Deep
PVC
2
541606.81
1172334.99
845.48
845.82
27.0
--
819.08
17.0
27.0
828.82
818.82
CCR-CCP-9D
5/26/2016
Bedrock
PVC
2
541858.90
1172489.72
842.30
838.99
70.0
--
772.37
61.8
66.8
777.19
772.19
CCR-CCP-9S
5/26/2016
Shallow
PVC
2
541855.78
1172496.03
841.97
838.78
49.8
--
790.88
30.3
45.3
808.48
793.48
CCR-CCP-10D
5/25/2016
Bedrock
PVC
2
542159.40
1172707.91
853.67
850.42
75.5
62.5
781.07
65.0
70.0
785.42
780.42
CCR-CCP-10DA
2/21/2017
Bedrock
PVC
2
542168.33
1172616.73
853.09
849.89
75.0
59.6
778.12
66.7
71.7
783.19
778.19
CCR-CCP-10S
5/26/2016
Shallow
PVC
2
542162.96
1172701.89
853.67
850.45
50.8
--
805.17
30.2
45.2
820.25
805.25
CCR-CCP-11BR
6/6/2016
Bedrock
PVC
2
542409.18
1172295.26
862.61
862.99
81.0
47.0
788.01
71.0
76.0
791.99
786.99
CCR-CCP-12D
5/24/2016
Deep
PVC
2
542638.17
1172133.72
859.70
859.93
80.0
65.0
786.42
68.0
73.0
791.93
786.93
CCR-CCP-12S
5/25/2016
Shallow
PVC
2
542645.70
1172128.12
859.59
859.97
63.0
--
807.57
37.0
52.0
822.97
807.97
CCR-CCP-13D
5/23/2016
Deep
PVC
2
542803.68
1171847.96
857.00
853.99
42.0
--
815.53
33.0
38.0
820.99
815.99
CCR-CCP-14D
5/21/2016
Deep
PVC
2
542798.21
1171503.62
859.86
856.31
53.0
38.0
811.18
39.0
44.0
817.31
812.31
CCR-CCP-15D
5/24/2016
Bedrock
PVC
2
542490.82
1171470.59
880.12
880.46
82.0
--
810.00
66.1
71.1
814.36
809.36
CCR-CCP-15S
5/24/2016
Shallow
PVC
2
542497.98
1171471.40
880.10
880.36
54.8
--
828.41
44.0
54.0
836.36
826.36
CCR-IB-iD
5/24/2016
Deep
PVC
2
545789.61
1177297.62
668.76
668.98
26.0
--
643.62
20.0
25.0
648.98
643.98
CCR-IB-1S
5/14/2016
Shallow
PVC
2
545793.61
1177292.05
668.91
669.09
16.0
--
653.22
6.0
16.0
663.09
653.09
CCR-IB-3BR
8/21/2018
Bedrock
PVC
2
546336.48
1176539.15
682.56
679.25
77.0
--
602.25
69.9
74.9
609.35
604.35
CCR-IB-3D
5/24/2016
Deep
PVC
2
546343.78
1176549.90
678.92
679.14
43.0
--
635.67
38.0
43.0
641.14
636.14
CCR-IB-3S
4/29/2016
Shallow
PVC
2
546341.29
1176555.35
678.74
678.89
30.0
--
651.63
12.0
27.0
666.89
651.89
CCR-U5-1D
5/20/2016
Deep
PVC
2
544697.04
1172082.85
782.01
778.34
56.0
--
732.58
41.0
46.0
737.34
732.34
CCR-U5-2D
5/21/2016
Deep
PVC
2
545208.18
1172437.03
775.22
771.51
66.0
--
705.40
60.5
65.5
711.01
706.01
CCR-U5-3D
5/24/2016
Deep
PVC
2
545207.27
1173011.86
694.88
691.80
27.5
--
665.63
22.0
27.0
669.80
664.80
CCR-U5-3S
5/16/2016
Shallow
PVC
2
545196.63
1173001.51
695.90
694.14
17.0
--
676.91
7.0
17.0
687.14
677.14
CCR-U5-4BR
8/1/2018
Bedrock
PVC
2
545258.10
1173450.07
696.27
696.78
87.0
--
609.78
79.8
84.8
616.98
611.98
CCR-U5-4D
5/22/2016
Deep
PVC
2
545258.55
1173439.22
699.62
695.01
42.0
--
659.07
31.0
36.0
664.01
659.01
Page 4 of 10

TABLE 1-1
MONITORING WELL CONSTRUCTION INFORMATION
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS, LLC, MOORESBORO, NC
Well ID
Date
Installed
Monitoring Zone
Material
Diameter
(Inches)
Northing
(Ft-NAD 83)
Easting
(Ft-NAD 83)
Measuring Point
TOC Elevation
(Ft-NAVD 88)
Ground Surface
Elevation
(Ft-NAVD 88)
Boring
1 Z
Depth '
(Ft-BGS)
SurfaceTotal
Casing
Depth
(Ft-BGS)
Well
Depth
(Ft-BGS)
Screened
Z
Interval
(Feet-BGS)
Top of Screen
Elevation
(Ft-NAVD 88)
Bottom of Screen
Elevation
(Ft-NAVD 88)
CCR-U5-4S
5/18/2016
Shallow
PVC
2
545259.59
1173431.54
698.27
694.91
25.0
--
669.92
10.0
25.0
684.91
669.91
CCR-U5-5D
5/21/2016
Deep
PVC
2
545193.76
1173873.23
768.89
765.68
72.0
--
693.49
66.0
71.0
699.68
694.68
CCR-U5-6DA
6/2/2016
Deep
PVC
2
544988.71
1174228.20
719.04
717.11
24.5
--
692.59
19.5
24.5
697.61
692.61
CCR-U5-6S
5/16/2016
Shallow
PVC
2
545002.37
1174233.24
717.69
714.92
19.0
--
698.29
6.0
16.0
708.92
698.92
CCR-U5-8D
5/23/2016
Deep
PVC
2
544032.01
1174329.25
759.63
757.31
67.0
--
695.73
58.5
62.5
698.81
694.81
CCR-U5-8S
5/16/2016
Shallow
PVC
2
544016.33
1174332.93
760.48
757.61
26.0
--
730.96
11.0
26.0
746.61
731.61
CCR-U5-9S
5/25/2016
Shallow
PVC
2
543695.36
1174509.03
763.11
760.10
21.0
--
739.08
6.0
21.0
754.08
739.08
CCR-U5-10D
5/18/2016
Deep
PVC
2
543349.93
1174871.95
785.63
782.61
42.0
--
740.25
36.0
41.0
746.61
741.61
CCR-U5-10S
5/23/2016
Shallow
PVC
2
543347.33
1174875.32
784.93
782.86
29.5
--
753.83
18.0
28.0
764.86
754.86
CLMW-1
9/7/1995
Shallow
PVC
2
544506.00
1178001.00
789.08
785.78
58.0
--
728.28
47.5
57.5
738.28
728.28
CLMW-2
9/6/1995
Shallow
PVC
2
545343.00
1177765.00
728.92
726.84
53.0
--
673.84
43.0
53.0
683.84
673.84
CLMW-3D
10/20/1995
Shallow
PVC
2
544860.00
1177685.00
774.92
772.47
103.0
--
669.47
93.0
103.0
679.47
669.47
CLMW-3S
10/23/1995
Shallow
PVC
2
544870.00
1177695.00
775.07
772.62
59.0
--
713.62
49.0
59.0
723.62
713.62
CLMW-4
10/24/1995
Shallow
PVC
2
545724.00
1179262.00
670.58
667.90
15.5
--
652.90
5.0
15.0
662.90
652.90
CLMW-5S
10/23/1995
Shallow
PVC
2
545326.00
1179406.00
773.78
773.97
60.0
--
713.97
50.0
60.0
723.97
713.97
CLMW-5D
10/23/1995
Shallow
PVC
2
545266.66
1179317.85
775.39
775.39
115.0
--
660.39
94.0
104.0
681.39
671.39
CLMW-6
10/25/1995
Shallow
PVC
2
542145.00
1178181.00
770.86
768.41
33.1
--
735.27
20.0
30.0
748.41
738.41
CLP-1
10/17/1995
--
PVC
2
545334.89
1178179.10
730.78
725.90
35.0
--
690.90
25.0
35.0
700.90
690.90
CLP-2
10/18/1995
--
PVC
2
545783.09
1179383.34
672.66
670.39
18.0
--
652.39
8.0
18.0
662.39
652.39
CLP-3
10/18/1995
--
PVC
2
544769.40
1179024.38
789.33
783.91
40.4
--
743.91
30.0
40.0
753.91
743.91
CLP-4
10/20/1995
--
PVC
2
544542.79
1178463.08
794.45
791.81
75.0
--
718.81
33.0
73.0
758.81
718.81
GWA-1BRU
5/22/2015
Deep
PVC
2
544172.39
1171772.81
781.29
779.46
28.9
9.0
751.66
22.8
27.8
756.66
751.66
GWA-2BR
--
Bedrock
PVC
2
545310.90
1173062.50
685.43
682.41
78.5
48.5
614.41
63.0
68.0
619.41
614.41
GWA-2BRU
5/4/2015
Deep
PVC
2
545297.33
1173057.26
685.35
683.26
43.4
26.0
645.86
32.4
37.4
650.86
645.86
GWA-2S
4/29/2015
Shallow
PVC
2
545302.41
1173057.42
685.56
683.62
22.0
--
662.62
6.0
21.0
677.62
662.62
GWA-3D
4/27/2015
Deep
PVC
2
545307.36
1173872.82
757.53
755.66
70.5
52.0
688.87
62.0
67.0
693.66
688.66
GWA-4D
4/27/2015
Deep
PVC
2
545086.73
1174248.31
711.64
709.84
42.5
27.0
672.84
32.0
37.0
677.84
672.84
GWA-4S
4/23/2015
Shallow
PVC
2
545093.95
1174247.23
711.61
709.83
21.0
--
689.83
5.0
20.0
704.83
689.83
GWA-5BRU
3/4/2015
Deep
PVC
2
543860.81
1174616.21
776.73
774.79
45.7
30.7
729.69
40.0
45.0
734.79
729.79
GWA-5S
3/6/2015
Shallow
PVC
2
543865.77
1174613.96
777.01
775.01
29.5
--
745.97
14.0
29.0
760.97
745.97
GWA-6D
5/11/2015
Deep
PVC
2
543999.47
1173153.06
809.97
808.30
60.5
39.5
761.30
42.0
47.0
766.30
761.30
GWA-6S
5/8/2015
Shallow
PVC
2
544008.58
1173149.13
810.00
808.33
41.0
--
767.33
31.0
41.0
777.33
767.33
GWA-10D
4/27/2015
Deep
PVC
2
546338.87
1176427.09
679.74
680.04
61.2
--
627.57
47.6
52.6
632.44
627.44
GWA-10S
4/23/2015
Shallow
PVC
2
546329.99
1176416.53
679.55
679.85
29.0
--
652.98
12.0
27.0
667.85
652.85
Page 5 of 10

TABLE 1-1
MONITORING WELL CONSTRUCTION INFORMATION
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS, LLC, MOORESBORO, NC
Well ID
Date
Installed
Monitoring Zone
Material
Diameter
(Inches)
Northing
(Ft-NAD 83)
Easting
(Ft-NAD 83)
Measuring Point
TOC Elevation
(Ft-NAVD 88)
Ground Surface
Elevation
(Ft-NAVD 88)
Boring
1 Z
Depth '
(Ft-BGS)
SurfaceTotal
Casing
Depth
(Ft-BGS)
Well
Depth
(Ft-BGS)
Screened
Z
Interval
(Feet-BGS)
Top of Screen
Elevation
(Ft-NAVD 88)
Bottom of Screen
Elevation
(Ft-NAVD 88)
GWA-11BRU
3/1/2015
Deep
PVC
2
546031.16
1176972.33
674.99
675.20
45.1
28.7
633.42
37.0
42.0
638.20
633.20
GWA-11S
5/29/2015
Shallow
PVC
2
546035.96
1176967.86
674.98
675.24
28.5
--
648.46
12.0
27.0
663.24
648.24
GWA-12BRU
4/2/2015
Deep
PVC
2
545469.36
1177265.70
719.66
717.90
59.9
45.0
664.90
48.0
53.0
669.90
664.90
GWA-12S
4/1/2015
Shallow
PVC
2
545473.23
1177268.05
719.40
717.54
35.0
--
683.54
19.0
34.0
698.54
683.54
GWA-13BR
3/5/2015
Bedrock
PVC
2
545131.60
1176624.21
724.12
724.38
86.5
19.5
638.88
80.5
85.5
643.88
638.88
GWA-14BR
9/27/2016
Bedrock
PVC
2
545436.12
1176399.33
712.55
712.41
133.3
--
676.41
118.5
128.5
593.91
583.91
GWA-14D
3/20/2015
Deep
PVC
2
545444.81
1176393.21
712.52
712.85
61.6
45.9
659.85
48.0
53.0
664.85
659.85
GWA-14S
3/18/2015
Shallow
PVC
2
545438.58
1176397.91
712.41
712.71
38.0
--
676.41
21.3
36.3
691.41
676.41
GWA-20BR
9/30/2016
Bedrock
PVC
2
544377.64
1177018.30
736.61
734.26
123.0
--
675.26
54.0
59.0
680.26
675.26
GWA-20D
4/30/2015
Deep
PVC
2
544359.26
1177009.95
736.24
734.31
38.5
21.2
704.59
25.0
30.0
709.31
704.31
GWA-20S
4/28/2015
Shallow
PVC
2
544365.78
1177012.53
736.13
734.18
19.5
--
715.00
4.5
19.5
729.68
714.68
GWA-21BR
5/20/2015
Bedrock
PVC
2
545690.80
1179245.36
672.98
670.86
68.0
16.6
604.89
60.6
65.6
610.26
605.26
GWA-21BRU
5/16/2015
Deep
PVC
2
545685.65
1179247.30
672.91
670.72
32.0
15.5
645.90
20.0
25.0
650.72
645.72
GWA-21S
5/29/2015
Shallow
PVC
2
545686.38
1179239.27
673.32
671.37
15.8
--
656.28
5.5
15.5
665.87
655.87
GWA-22BRU
4/29/2015
Deep
PVC
2
545851.22
1180003.09
665.19
663.26
--
--
641.26
17.0
22.0
646.26
641.26
GWA-22S
5/4/2015
Shallow
PVC
2
545851.42
1179998.61
665.19
663.28
13.0
--
650.66
2.6
12.6
660.66
650.66
GWA-23D
5/9/2015
Deep
PVC
2
544500.42
1180105.67
786.80
785.16
30.4
--
756.68
23.5
28.5
761.68
756.68
GWA-24BR
3/10/2016
Bedrock
PVC
2
543396.12
1179590.64
798.92
795.94
72.0
--
725.95
65.0
70.0
730.95
725.95
GWA-24D
6/5/2015
Deep
PVC
2
543416.75
1179608.58
794.94
793.02
40.4
25.8
760.21
28.0
33.0
765.02
760.02
GWA-24S
6/5/2015
Shallow
PVC
2
543416.96
1179599.95
794.47
792.52
24.5
--
768.65
14.0
24.0
778.52
768.52
GWA-25D
5/16/2015
Deep
PVC
2
541834.97
1178142.16
792.01
789.99
49.5
34.5
748.49
36.5
41.5
753.49
748.49
GWA-25S
5/13/2015
Shallow
PVC
2
541839.06
1178137.47
791.81
789.64
26.0
--
764.64
10.0
25.0
779.64
764.64
GWA-26D
5/16/2015
Deep
PVC
2
542464.26
1177888.15
782.98
781.18
86.0
53.6
707.38
68.6
73.8
712.58
707.38
GWA-26S
5/13/2015
Shallow
PVC
2
542467.12
1177879.86
783.36
781.43
26.5
--
756.23
10.2
25.2
771.23
756.23
GWA-27BR
9/21/2016
Bedrock
PVC
2
543385.82
1177728.81
805.50
803.11
113.0
--
694.21
103.9
108.9
699.21
694.21
GWA-27DA
6/9/2015
Deep
PVC
2
544554.10
1174338.80
805.48
803.00
61.0
--
747.00
51.0
56.0
752.00
747.00
GWA-28BR
4/30/2015
Bedrock
PVC
2
545417.94
1178962.45
757.90
755.94
100.6
50.6
665.92
85.0
90.0
670.94
665.94
GWA-28BRU
4/2/2015
Deep
PVC
2
545412.27
1178963.41
758.35
756.43
60.9
45.9
697.46
53.9
58.9
702.53
697.53
GWA-28S
4/8/2015
Shallow
PVC
2
545417.20
1178968.54
757.74
755.92
38.5
--
718.45
22.5
37.5
733.45
718.45
GWA-29BR
5/18/2015
Bedrock
PVC
2
545660.02
1177541.87
679.38
677.57
67.8
14.7
632.81
40.0
45.0
637.57
632.57
GWA-29BRA
4/11/2017
Bedrock
PVC
2
545659.90
1177555.32
679.76
676.94
77.3
--
618.54
48.4
58.4
628.54
618.54
GWA-29D
5/11/2015
Deep
PVC
2
545661.19
1177536.39
679.56
677.76
28.6
13.3
652.33
20.5
25.5
657.26
652.26
GWA-30BR
5/20/2015
Bedrock
PVC
2
542781.71
1173642.64
806.90
805.01
80.5
30.2
735.01
65.0
70.0
740.01
735.01
GWA-30BRU
--
Deep
PVC
2
542776.60
1173643.86
806.72
804.88
--
--
761.88
38.0
43.0
766.88
761.88
Page 6 of 10

TABLE 1-1
MONITORING WELL CONSTRUCTION INFORMATION
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS, LLC, MOORESBORO, NC
Well ID
Date
Installed
Monitoring Zone
Material
Diameter
(Inches)
Northing
(Ft-NAD 83)
Easting
(Ft-NAD 83)
Measuring Point
TOC Elevation
(Ft-NAVD 88)
Ground Surface
Elevation
(Ft-NAVD 88)
Boring
1 Z
Depth '
(Ft-BGS)
SurfaceTotal
Casing
Depth
(Ft-BGS)
Well
Depth
(Ft-BGS)
Screened
Z
Interval
(Feet-BGS)
Top of Screen
Elevation
(Ft-NAVD 88)
Bottom of Screen
Elevation
(Ft-NAVD 88)
GWA-30S
5/15/2015
Shallow
PVC
2
542786.16
1173642.62
806.89
804.91
27.5
--
761.91
17.5
27.5
787.41
777.41
GWA-31BR
5/15/2015
Bedrock
PVC
2
544586.56
1174353.57
755.04
753.00
66.1
16.3
701.94
45.9
50.9
707.10
702.10
GWA-31BRA
3/23/2016
Bedrock
PVC
2
544600.62
1174368.22
757.13
753.66
127.0
--
627.16
116.5
126.5
637.16
627.16
GWA-31D
4/24/2015
Deep
PVC
2
544590.13
1174359.77
754.89
752.94
21.8
6.5
737.59
10.4
15.4
742.59
737.59
GWA-32BR
6/5/2015
Bedrock
PVC
2
546973.12
1175046.67
698.56
696.58
95.3
45.0
631.58
60.0
65.0
636.58
631.58
GWA-32D
5/30/2015
Deep
PVC
2
546972.81
1175043.33
698.53
696.62
45.7
4.1
656.67
35.0
40.0
661.67
656.67
GWA-33BR
5/12/2015
Bedrock
PVC
2
544548.03
1176568.66
722.94
720.82
93.1
43.0
630.82
85.0
90.0
635.82
630.82
GWA-33D
5/9/2015
Deep
PVC
2
544542.77
1176568.78
722.88
720.81
33.0
--
689.81
26.0
31.0
694.81
689.81
GWA-33S
5/8/2015
Shallow
PVC
2
544553.92
1176568.35
722.71
720.75
16.5
--
705.75
5.0
15.0
715.75
705.75
GWA-34BR
8/7/2018
Bedrock
PVC
2
545054.77
1171535.26
715.38
712.48
81.4
--
649.98
51.0
61.0
661.48
651.48
GWA-34S
3/22/2016
Shallow
PVC
2
545058.04
1171545.44
715.88
712.55
30.0
--
683.25
14.3
29.3
698.25
683.25
GWA-35D
3/31/2016
Deep
PVC
2
545450.05
1172891.97
697.74
695.25
69.0
49.0
628.25
62.0
67.0
633.25
628.25
GWA-35S
4/7/2016
Shallow
PVC
2
545443.02
1172882.81
698.04
695.69
38.0
--
660.69
20.0
35.0
675.69
660.69
GWA-36D
2/16/2016
Deep
PVC
2
545365.46
1174228.18
710.53
707.52
96.0
80.0
619.52
83.0
88.0
624.52
619.52
GWA-36S
2/17/2016
Shallow
PVC
2
545361.74
1174231.06
710.53
707.80
22.0
--
685.80
7.0
22.0
700.80
685.80
GWA-37D
3/7/2016
Deep
PVC
2
545741.36
1174065.36
710.47
707.68
102.0
86.0
607.67
95.0
100.0
612.67
607.67
GWA-37S
3/8/2016
Shallow
PVC
2
545745.17
1174059.49
710.56
707.59
55.0
--
652.59
40.0
55.0
667.59
652.59
GWA-38D
--
Deep
PVC
2
545295.90
1176204.21
760.01
757.28
65.0
47.0
699.28
53.0
58.0
704.28
699.28
GWA-38S
2/17/2016
Shallow
PVC
2
545303.18
1176204.41
760.01
757.04
50.0
--
706.85
35.0
50.0
722.04
707.04
GWA-39S
4/8/2016
Shallow
PVC
1
544433.87
1176960.10
723.41
720.17
5.0
--
715.17
3.0
5.0
717.17
715.17
GWA-40S
4/8/2016
Shallow
PVC
1
544290.09
1176893.40
723.09
720.07
7.5
--
713.07
4.0
7.0
716.07
713.07
GWA-42S
4/1/2016
Shallow
PVC
1
544318.30
1176795.55
724.65
721.94
9.0
--
712.94
4.0
9.0
717.94
712.94
GWA-43D
3/29/2016
Deep
PVC
2
544428.69
1176622.32
725.10
722.35
49.5
--
674.85
42.5
47.5
679.85
674.85
GWA-43S
3/30/2016
Shallow
PVC
2
544428.85
1176616.35
725.19
722.49
22.0
--
701.49
6.0
21.0
716.49
701.49
GWA-44BR
2/11/2016
Bedrock
PVC
2
544232.45
1176085.01
769.03
765.95
131.0
81.0
666.86
94.1
99.1
671.86
666.86
GWA-44D
2/12/2016
Deep
PVC
2
544225.17
1176084.81
769.07
766.03
77.0
55.7
691.02
70.0
75.0
696.02
691.02
GWA-44S
2/11/2016
Shallow
PVC
2
544236.09
1176085.11
768.88
766.15
52.0
--
715.15
36.0
51.0
730.15
715.15
GWA-45D
2/12/2016
Deep
PVC
2
543267.82
1175816.16
816.59
813.52
90.0
66.0
761.51
84.0
89.0
729.52
724.52
GWA-45S
2/11/2016
Shallow
PVC
2
543264.18
1175816.06
816.55
813.67
56.0
--
758.18
45.5
55.5
768.17
758.18
GWA-46D
2/29/2016
Deep
PVC
2
542651.40
1177341.80
788.60
785.55
30.0
--
762.55
18.0
23.0
767.55
762.55
GWA-47D
2/29/2016
Deep
PVC
2
542672.00
1177735.90
805.18
802.53
60.0
33.0
747.53
50.0
55.0
752.53
747.53
GWA-48BR
3/11/2016
Bedrock
PVC
2
543048.02
1179539.18
808.89
805.54
111.0
--
718.53
82.0
87.0
723.53
718.53
GWA-51D
11/3/2017
Deep
PVC
2
544562.65
1177393.71
792.99
790.20
--
46.0
729.70
55.5
60.5
734.7
729.7
GWA-54BRO
11/1/2017
Bedrock
--
--
54087.34
1177580.25
764.65
761.85
--
--
586.85
112.0
175.0
649.85
586.85
Page 7 of 10

TABLE 1-1
MONITORING WELL CONSTRUCTION INFORMATION
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS, LLC, MOORESBORO, NC
Well ID
Date
Installed
Monitoring Zone
Material
Diameter
(Inches)
Northing
(Ft-NAD 83)
Easting
(Ft-NAD 83)
Measuring Point
TOC Elevation
(Ft-NAVD 88)
Ground Surface
Elevation
(Ft-NAVD 88)
Boring
1 Z
Depth '
(Ft-BGS)
SurfaceTotal
Casing
Depth
(Ft-BGS)
Well
Depth
(Ft-BGS)
Screened
Z
Interval
(Feet-BGS)
Top of Screen
Elevation
(Ft-NAVD 88)
Bottom of Screen
Elevation
(Ft-NAVD 88)
GWA-54D
10/30/2017
Deep
PVC
2
545082.33
1177583.45
765.03
762.31
--
97.0
650.31
107.0
112.0
655.31
650.31
GWA-54S
11/3/2017
Shallow
PVC
2
545098.83
1177581.82
763.76
760.81
--
--
708.81
37.0
52.0
723.81
708.81
GWA-56D
11/8/2017
Deep
PVC
2
545794.47
1174475.75
708.70
708.80
--
57.0
636.80
67.0
72.0
641.80
636.80
GWA-56S
11/8/2017
Shallow
PVC
2
545784.15
1174480.67
708.58
708.82
--
--
668.82
25.0
40.0
683.82
668.82
IB-11D
4/20/2015
Deep
PVC
2
546207.74
1176417.80
700.72
698.84
106.3
--
598.84
95.0
100.0
603.84
598.84
IB-1S
4/16/2015
Ash Pore Water
PVC
2
546195.14
1176407.27
700.74
698.87
44.0
--
655.87
28.0
43.0
670.87
655.87
IB-2AL
3/30/2015
Shallow
PVC
2
545888.70
1176632.62
697.55
695.58
51.0
--
646.78
38.8
48.8
656.78
646.78
IB-2BRU
4/2/2015
Deep
PVC
2
545875.38
1176636.10
697.67
695.68
103.6
88.0
593.68
97.0
102.0
598.68
593.68
IB-2I
5/6/2015
Shallow
PVC
2
545863.40
1176644.01
697.22
695.56
81.5
--
616.56
69.0
79.0
626.56
616.56
IB-2S-SL
3/25/2015
Ash Pore Water
PVC
2
545912.14
1176622.28
697.73
695.67
43.0
--
658.67
22.0
37.0
673.67
658.67
IB-31D
6/2/2015
Deep
PVC
2
545819.44
1177130.04
704.08
704.31
70.0
56.0
638.31
61.0
66.0
643.31
638.31
IB-3S
5/22/2015
Shallow
PVC
2
545822.90
1177126.70
704.15
704.33
42.5
--
663.33
26.0
41.0
678.33
663.33
IB-4BR
4/25/2015
Bedrock
PVC
2
545507.67
1176894.55
701.93
698.49
105.6
55.0
624.19
69.3
74.3
629.19
624.19
IB-4D
3/25/2015
Deep
PVC
2
545503.10
1176913.89
700.38
698.44
58.5
--
646.44
47.0
52.0
651.44
646.44
IB-4S-SL
3/24/2015
Ash Pore Water
PVC
2
545504.39
1176907.15
700.34
698.30
34.0
--
673.30
10.0
25.0
688.30
673.30
IB-6D
8/11/2018
Deep
PVC
2
545896.64
1177148.48
675.76
672.61
57.0
--
615.61
51.2
56.2
621.41
616.41
IB-6S
8/10/2018
Shallow
PVC
2
545901.08
1177140.77
676.14
673.05
32.0
--
641.05
20.5
30.5
652.55
642.55
IB-71D
8/15/2018
Deep
PVC
2
546209.40
1176720.24
681.44
678.53
47.0
--
631.53
39.8
44.8
638.73
633.73
IB-7S
8/14/2018
Shallow
PVC
2
546213.52
1176717.44
681.43
678.39
30.0
--
648.39
19.6
29.6
658.79
648.79
MW-2D
12/21/2007
Deep
PVC
2
545337.00
1177764.00
--
727.53
76.0
--
727.53
71.0
76.0
656.53
651.53
MW-2DA
12/14/2010
Bedrock
PVC
2
545334.70
1177757.00
730.62
727.45
79.7
--
651.45
71.0
76.0
656.45
651.45
MW-4D
12/20/2007
Deep
PVC
2
545716.00
1179246.00
672.12
669.91
26.3
--
643.66
21.3
26.3
648.66
643.66
MW-71D
12/22/2007
Deep
PVC
2
543371.41
1177747.98
807.35
804.11
38.8
--
763.08
33.5
38.5
770.61
765.61
MW-8D
12/22/2007
Deep
PVC
2
544314.00
1176988.00
736.64
734.11
35.0
--
699.11
29.8
34.8
704.36
699.36
MW-8S
12/7/2005
Shallow
PVC
2
544313.00
1176983.00
736.27
733.78
18.0
--
715.88
2.9
17.9
730.88
715.88
MW-10D
12/19/2007
Deep
PVC
2
544812.00
1179010.00
785.50
783.40
39.0
--
744.40
32.8
37.8
750.65
745.65
MW-10S
11/30/2005
Shallow
PVC
2
544816.00
1179004.00
785.81
783.40
35.0
--
748.70
19.7
34.7
763.70
748.70
MW-11BRO
10/31/2017
Bedrock
PVC
2
545438.36
1179830.86
764.96
762.26
--
55.0
587.26
--
--
--
--
MW-11D
12/20/2007
Deep
PVC
2
545432.00
1179823.00
763.67
761.45
43.2
--
718.45
37.9
42.9
723.55
718.55
MW-11DA
10/25/2017
Deep
PVC
2
545440.62
1179837.15
765.02
762.43
--
--
712.43
45.0
50.0
717.43
712.43
MW-11S
12/2/2005
Shallow
PVC
2
545431.00
1179829.00
764.51
762.10
30.5
--
732.10
15.0
30.0
747.10
732.10
MW-20D
--
Deep
PVC
2
545809.00
1179558.00
665.20
662.63
21.5
--
641.13
6.5
21.5
656.13
641.13
MW-20DR
--
Bedrock
PVC
2
545807.10
1179556.00
665.38
662.76
63.0
--
600.26
12.5
62.5
650.26
600.26
MW-21BR
3/27/2015
Bedrock
PVC
2
544846.80
1180097.69
777.56
775.77
95.8
46.8
689.62
81.1
86.1
694.67
689.67
Page 8 of 10

TABLE 1-1
MONITORING WELL CONSTRUCTION INFORMATION
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS, LLC, MOORESBORO, NC
Well ID
Date
Installed
Monitoring Zone
Material
Diameter
(Inches)
Northing
(Ft-NAD 83)
Easting
(Ft-NAD 83)
Measuring Point
TOC Elevation
(Ft-NAVD 88)
Ground Surface
Elevation
(Ft-NAVD 88)
Boring
1 Z
Depth '
(Ft-BGS)
SurfaceTotal
Casing
Depth
(Ft-BGS)
Well
Depth
(Ft-BGS)
Screened
Z
Interval
(Feet-BGS)
Top of Screen
Elevation
(Ft-NAVD 88)
Bottom of Screen
Elevation
(Ft-NAVD 88)
MW-21D
1/3/2011
Deep
PVC
2
544842.60
1180102.00
777.51
775.43
21.5
--
754.23
6.6
21.2
768.83
754.23
MW-22BR
6/16/2015
Bedrock
PVC
2
542828.34
1179648.35
821.11
819.22
100.5
44.7
727.95
86.0
91.0
733.22
728.22
MW-22DR
1/12/2011
Bedrock
PVC
2
542820.80
1179651.00
821.81
818.59
90.4
38.6
728.39
40.4
90.2
778.19
728.39
MW-23D
--
Deep
PVC
2
544306.90
1176393.00
734.08
731.09
46.2
--
685.09
36.0
46.0
695.09
685.09
MW-23DR
12/16/2010
Bedrock
PVC
2
544306.30
1176399.00
733.80
730.69
95.5
48.0
635.69
45.0
95.0
685.69
635.69
MW-23S
3/1/2016
Shallow
PVC
2
544296.91
1176385.60
733.62
730.94
27.0
--
705.94
10.0
25.0
720.94
705.94
MW-24D
--
Deep
PVC
2
541289.40
1178297.00
816.36
813.13
53.4
--
760.13
33.2
53.0
779.93
760.13
MW-24DR
1/3/2012
Bedrock
PVC
2
541281.00
1178293.00
816.28
813.31
105.5
56.8
708.21
60.3
105.1
753.01
708.21
MW-25DR
1/6/2011
Bedrock
PVC
2
545921.80
1178089.00
667.05
664.53
87.3
35.0
577.53
37.3
87.0
627.23
577.53
MW-30D
3/16/2015
Deep
PVC
2
542470.65
1173384.07
833.26
831.12
101.1
83.3
740.08
86.1
91.1
745.02
740.02
MW-30DA
10/17/2017
Deep
PVC
2
542496.19
1173390.01
835.05
832.25
--
--
740.25
87.0
92.0
745.25
740.25
MW-30S
3/10/2015
Shallow
PVC
2
542484.88
1173386.25
833.73
831.49
48.0
--
783.83
32.7
47.7
798.83
783.83
MW-32BR
3/19/2015
Bedrock
PVC
2
542916.96
1172313.50
839.40
837.47
91.2
41.7
764.87
62.5
72.5
774.97
764.97
MW-32D
3/19/2015
Deep
PVC
2
542927.03
1172308.70
839.28
837.34
56.8
39.0
783.75
48.5
53.5
788.84
783.84
MW-32S
3/13/2015
Shallow
PVC
2
542935.85
1172312.99
839.71
837.64
35.0
--
802.71
20.0
35.0
817.64
802.64
MW-34BRU
5/27/2015
Deep
PVC
2
544844.38
1171585.40
751.66
749.85
50.7
35.8
701.15
43.7
48.7
706.15
701.15
MW-34S
5/21/2015
Shallow
PVC
2
544847.26
1171592.47
751.87
749.87
30.0
--
720.47
14.4
29.4
735.47
720.47
MW-36BRU
6/1/2015
Deep
PVC
2
545612.63
1172349.08
678.40
676.49
85.6
63.5
593.36
77.6
82.6
598.89
593.89
MW-36S
5/28/2015
Shallow
PVC
2
545610.32
1172353.94
678.87
676.84
20.0
--
657.87
4.0
19.0
672.84
657.84
MW-38BR
9/27/2016
Bedrock
PVC
2
545675.26
1173824.49
707.70
707.97
125.5
--
590.97
97.5
102.5
610.47
605.47
MW-38D
4/8/2015
Deep
PVC
2
545675.79
1173812.70
707.68
707.90
81.5
64.0
633.90
69.0
74.0
638.90
633.90
MW-38S
3/4/2015
Shallow
PVC
2
545680.97
1173810.80
707.60
707.85
55.0
--
655.16
37.7
52.7
670.15
655.15
MW-40BRU
4/6/2015
Deep
PVC
2
545211.31
1174668.81
709.56
710.06
40.3
24.7
674.66
30.4
35.4
679.66
674.66
MW-40S
4/8/2015
Shallow
PVC
2
545216.38
1174674.71
709.38
709.67
21.5
--
689.67
5.0
20.0
704.67
689.67
MW-42D
3/11/2015
Deep
PVC
2
543355.32
1175355.63
811.12
809.02
55.5
39.7
759.32
44.7
49.7
764.32
759.32
MW-42DA
4/7/2017
Deep
PVC
2
543343.11
1175334.26
812.02
808.73
57.9
--
754.44
49.3
54.3
759.43
754.43
MW-42S
3/3/2015
Shallow
PVC
2
543353.33
1175362.41
811.47
809.47
38.5
--
771.47
28.0
38.0
781.47
771.47
SY-1
9/4/2017
Shallow
PVC
2
546141.41
1173343.23
700.18
697.38
41.0
--
697.38
26.0
41.0
671.38
656.38
SY-2
9/4/2017
Shallow
PVC
2
546221.04
1173559.37
706.88
704.22
48.5
--
704.22
33.5
48.5
670.72
655.72
SY-3
9/5/2017
Shallow
PVC
2
546214.41
1173836.71
710.04
707.68
55.6
--
707.68
36.4
51.4
671.28
656.28
SY-4
9/5/2017
Shallow
PVC
2
546334.16
1174169.15
710.22
707.68
53.5
--
707.68
38.0
53.0
669.68
654.68
SY-5
9/5/2017
Shallow
PVC
2
546697.56
1174180.48
709.96
707.34
55.1
--
707.34
39.8
54.8
667.54
652.54
SYBG-1
9/5/2017
Shallow
PVC
2
546750.52
1173347.67
705.18
702.45
28.6
--
702.45
11.0
26.0
691.45
676.45
U5-11D
4/25/2015
Deep
PVC
2
544204.05
1172474.31
802.94
801.00
68.2
46.0
741.00
55.0
60.0
746.00
741.00
Page 9 of 10

TABLE 1-1
MONITORING WELL CONSTRUCTION INFORMATION
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS, LLC, MOORESBORO, NC
Well ID
Date
Installed
Monitoring Zone
Material
Diameter
(Inches)
Northing
(Ft-NAD 83)
Easting
(Ft-NAD 83)
Measuring Point
TOC Elevation
(Ft-NAVD 88)
Ground Surface
Elevation
(Ft-NAVD 88)
Boring
1 Z
Depth '
(Ft-BGS)
SurfaceTotal
Casing
Depth
(Ft-BGS)
Well
Depth
(Ft-BGS)
Screened
Z
Interval
(Feet-BGS)
Top of Screen
Elevation
(Ft-NAVD 88)
Bottom of Screen
Elevation
(Ft-NAVD 88)
1-15-1S
4/20/2015
Shallow
PVC
2
544207.33
1172478.77
802.71
800.82
55.0
--
746.82
39.0
54.0
761.82
746.82
U5-2BR
--
Bedrock
PVC
2
544669.18
1172562.42
795.06
792.11
106.0
74.0
686.80
100.3
105.3
691.80
686.80
1.15-21D
5/4/2015
Deep
PVC
2
544678.47
1172564.38
793.73
791.99
80.3
65.5
714.99
72.0
77.0
719.99
714.99
U5-2S-SL
4/29/2015
Ash Pore Water
PVC
2
544678.50
1172558.60
--
792.17
67.0
--
727.17
50.0
65.0
742.17
727.17
U5-2S-SL-A
6/22/2016
Ash Pore Water
PVC
2
544669.35
1172556.45
795.42
792.39
65.0
--
727.39
50.0
65.0
742.39
727.39
U5-3D
6/1/2015
Deep
PVC
2
545043.91
1172643.60
765.68
765.91
81.4
63.9
687.09
73.8
78.8
692.09
687.09
U5-3S
4/23/2015
Shallow
PVC
2
545042.70
1172647.90
--
766.10
51.0
--
716.10
35.0
50.0
731.10
716.10
U5-3SA
2/26/2016
Shallow
PVC
2
545045.70
1172638.67
765.85
766.06
57.0
--
710.00
41.0
56.0
725.06
710.06
U5-4BR
5/22/2015
Bedrock
PVC
2
544943.89
1173140.33
765.06
765.31
149.6
99.1
635.21
125.1
130.1
640.21
635.21
U5-4BRA
4/11/2017
Bedrock
PVC
2
544945.38
1173165.30
765.11
765.34
--
--
626.34
129.0
139.0
636.34
626.34
1.15-41D
4/30/2015
Deep
PVC
2
544943.46
1173133.62
764.99
765.19
116.4
--
656.01
104.2
109.2
661.01
656.01
1-15-4S
4/22/2015
Shallow
PVC
2
544943.87
1173128.56
764.82
765.17
76.0
--
690.38
59.8
74.8
705.38
690.38
U5-5BR
10/3/2016
Bedrock
PVC
2
545118.33
1173689.45
765.66
765.62
--
--
655.12
105.5
110.5
660.12
655.12
U5-5D
5/5/2015
Deep
PVC
2
545115.11
1173681.05
765.40
765.69
70.6
50.8
696.47
65.5
69.5
700.19
696.19
U5-61D
4/28/2015
Deep
PVC
2
544862.59
1174118.33
765.19
765.43
68.5
53.0
703.93
56.5
61.5
708.93
703.93
1-15-6S
4/14/2015
Shallow
PVC
2
544871.20
1174112.58
765.28
765.64
53.4
--
713.64
37.0
52.0
728.64
713.64
1-15-71D
4/8/2015
Deep
PVC
2
544583.00
1173958.04
767.37
767.62
85.7
70.2
690.83
71.5
76.8
696.13
690.83
1-15-7S
3/31/2015
Ash Pore Water
PVC
2
544587.86
1173960.06
767.30
767.56
38.0
--
730.59
22.0
37.0
745.59
730.59
U5-7SL
4/2/2015
Ash Pore Water
PVC
2
544593.92
1173962.12
767.21
767.58
68.0
--
701.62
56.0
66.0
711.62
701.62
U5-8BR
2/2/2016
Bedrock
PVC
2
543330.49
1174610.73
770.31
770.54
127.0
76.6
644.64
120.9
125.9
649.64
644.64
1.15-81D
5/9/2015
Deep
PVC
2
543339.56
1174601.29
770.25
770.57
84.1
69.0
694.57
71.0
76.0
699.57
694.57
1-15-8S
5/5/2015
Shallow
PVC
2
543335.66
1174605.44
770.29
770.63
21.0
j --
j 750.63
5.0
20.0
j 765.63
j 750.63
Notes:
-- - No Data Available
1 - Well depths initially measured during well installation and updated as new wells are installed.
Z - Values measured during well installation or calculated with values measured during well installation.
BGS - Below ground surface
Ft - Feet
IMP - Interim Monitoring Plan
NA - Not applicable
NAD 83 - North American Datum 1983
NAVD 88 - North American Vertical Datum 1988
NM - Not Measured
PVC- Polyvinyl chloride
Red font indicates abandoned well
TOC - Top of Casing
Prepared by: DMY and JYT Checked by: KDF and SMD
Page 10 of 10

Well ID
Quarter 1
Groundwater Elevation
(Ft - NAVD-88)
01/26/2018
TABLE 2-1
2018 CAMA WATER ELEVATIONS
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS, LLC, MOORESBORO, NC
Quarter 2
Groundwater Elevation
(Ft - NAVD-88)
04/26/2018
Quarter 3
Groundwater Elevation
(Ft - NAVD-88)
07/30/2018
Quarter 4
Groundwater Elevation
(Ft - NAVD-88)
10/22/2018
Screened
Interval
(Ft-BGS)
Monitoring Zone
IMP WELLS
AB-1BRO
713.28
714.00
713.92
713.96
--
--
Bedrock
AB -ID
711.09
711.26
710.50
711.31
121.5
126.5
Deep
AB-1S
733.43
734.64
734.20
734.37
54.0
69.0
Shallow
AB-2BRO
741.99
744.59
742.57
742.79
--
--
Bedrock
AB-2D
736.10
736.76
734.79
734.47
72.5
77.5
Deep
AB-2S
743.33
744.32
743.30
743.22
44.0
49.0
Shallow
AB-3-1-A152
--
--
762.73
762.32
67.5
72.5
Ash Pore Water
AB-3-MA152
--
--
762.57
762.17
56.2
61.2
Ash Pore Water
AB-3BR
713.10
728.89
736.33
743.10
175.5
185.5
Bedrock
AB-3BRUA
761.77
754.05
751.89
746.99
125.0
130.0
Deep
AB-3I
763.00
763.37
762.63
762.44
92.0
102.0
Shallow
AB-3S
762.77
763.14
762.58
762.42
22.0
37.0
Ash Pore Water
AB-3SL
--
--
762.45
762.26
62.2
72.2
Ash Pore Water
AB-3SLA
762.94
763.34
762.58
761.40
60.0
70.0
Ash Pore Water
AB-4-LA152
--
--
761.94
761.40
32.4
37.4
Ash Pore Water
AB-4-UA152
--
--
761.68
760.55
14.9
19.9
Ash Pore Water
AB-4BR
757.37
757.75
757.17
757.06
104.5
109.5
Bedrock
AB-4D
761.94
762.43
761.91
761.69
55.0
60.0
Deep
AB-4S
761.48
761.87
761.46
761.26
5.0
20.0
Ash Pore Water
AB-4SL
761.71
762.15
761.69
761.43
28.7
38.7
Ash Pore Water
AB-5BR
762.89
763.65
762.93
762.81
91.2
96.1
Bedrock
AB-5BRU
764.11
765.01
764.21
764.17
60.5
65.5
Deep
AB-5S
763.66
764.12
763.52
763.43
5.0
1 20.0
Ash Pore Water
AB-6BR
758.59
760.15
758.94
758.87
96.0
101.0
Bedrock
AB-6D
764.63
765.72
764.66
764.66
65.8
70.8
Deep
AB-6S
764.29
764.76
764.28
764.21
5.0
20.0
Ash Pore Water
AS -ID
728.03
728.99
729.01
728.61
106.0
111.0
Deep
AS-1SB
729.26
730.19
730.18
729.81
83.0
98.0
Shallow
AS-2BR
658.30
660.30
657.89
658.42
92.0
97.0
Bedrock
AS-2D
666.10
667.57
666.44
666.96
55.0
60.0
Deep
AS-2S
672.46
674.33
672.96
673.20
15.5
30.5
Shallow
AS-3BRU
703.95
704.21
704.13
703.98
48.5
53.5
Deep
AS-4D
744.19
744.68
744.69
744.46
95.0
100.0
Deep
AS-4S
742.47
742.63
742.65
742.50
84.4
94.4
Shallow
AS-5BR
701.94
702.42
702.53
702.39
75.1
80.1
Bedrock
Page 1 of 7

Well ID
P WELLS
AS-5BRU
AS-5S
AS-6BRA
AS-6D
AS-6S
AS-7BR
AS-7BRA
AS-7D
AS-7S
AS-8D
AS-8S
BG-1BRA
BG-1D
BG-1S
BG-2D
CCPMW-1D
CCPMW-IS
CCPMW-2D
CCPM W-2S
CCPMW-3D
CCPM W-3S
CCPMW-4
CCPMW-5
CCPMW-6D
CCPM W-6S
CCPTW-1D
CCPTW-1S
CCPTW-2
CCR-7S
CCR-7D
CCR-12S
CCR-12D
CCR-12BR
CCR-13D
Quarter 1
Groundwater Elevation
(Ft - NAVD-88)
01/26/2018
TABLE 2-1
2018 CAMA WATER ELEVATIONS
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS, LLC, MOORESBORO, NC
Quarter 2
Groundwater Elevation
(Ft - NAVD-88)
04/26/2018
Quarter 3
Groundwater Elevation
(Ft - NAVD-88)
07/30/2018
Quarter 4
Groundwater Elevation
(Ft - NAVD-88)
10/22/2018
Screened
Interval
(Ft-BGS)
699.24
699.80
699.85
699.54
55.0
60.0
701.04
701.72
701.83
701.37
29.3
44.3
721.57
721.86
721.97
721.64
153.5
158.5
720.97
721.38
720.55
721.22
123.0
128.0
721.15
721.54
721.71
721.36
86.0
101.0
702.78
703.95
704.52
704.59
122.0
127.0
687.56
688.28
690.35
689.64
120.0
130.0
704.54
706.72
705.48
705.41
82.5
87.5
--
--
--
--
57.0
62.0
708.38
711.20
710.14
709.75
28.5
43.5
691.52
693.30
692.10
692.13
62.9
67.9
697.08
702.86
699.37
699.79
23.0
38.0
774.30
776.68
775.86
775.40
93.0
98.0
773.74
776.04
775.40
774.92
66.5
71.5
773.47
775.73
775.32
774.74
20.0
35.0
793.34
794.71
797.14
797.00
49.0
54.0
834.89
835.75
838.93
837.34
49.0
54.0
--
--
839.56
--
30.0
40.0
798.54
801.58
801.61
802.39
65.0
70.0
--
803.18
803.12
804.43
32.0
42.0
791.18
796.44
795.33
796.89
26.0
31.0
811.56
--
--
--
9.0
14.0
815.42
819.52
818.31
817.81
50.0
65.0
814.14
813.81
815.92
816.98
62.5
72.5
812.45
814.45
815.70
814.90
50.0
60.0
812.43
814.49
815.70
814.87
33.5
43.5
802.67
806.21
806.76
806.54
61.0
66.0
--
--
807.32
807.01
25.0
1 35.0
801.38
798.99
800.53
35.0
45.0
--
750.32
750.73
34.5
49.5
--
--
751.82
751.57
86.0
91.0
737.99
740.23
737.68
738.11
33.0
48.0
738.71
741.60
737.00
737.80
1 59.0
64.0
--
--
735.82
--
100.0
105.0
762.90
765.85
762.43
762.25
27.0
32.0
Monitoring Zone
Deep
Shallow
Bedrock
Deep
Shallow
Bedrock
Bedrock
Deep
Shallow
Ash Pore Water
Deep
Shallow
Bedrock
Deep
Shallow
Deep
Bedrock
Shallow
Deep
Shallow
Deep
Shallow
Bedrock
Bedrock
Bedrock
Shallow
Deep
Shallow
Shallow
Shallow
Deep
Shallow
Deep
Bedrock
Dee
Page 2 of 7

Well ID
P WELLS
CCR-15D
CCR-IB-1S
CCR-IB-11D
CCR-IB-3S
CCR-IB-3D
CCR-U5-3S
CCR-U5-3D
CCR-IB-3BR
CLMW-1
CLM W-2
CLMW-3D
CLMW-3S
CLMW-5D
CLMW-5S
CLM W-6
CLP-1
CLP-2
CLP-3
CLP-4
GWA-10D
GWA-10S
GWA-11BRU
GWA-11S
GWA-12BRU
GWA-12S
GWA-13BR
GWA-14BR
GWA-14D
GWA-14S
GWA-1BRU
GWA-20BR
GWA-20D
GWA-20S
GWA-21BR
Quarter 1
Groundwater Elevation
(Ft - NAVD-88)
01/26/2018
763.74
659.29
659.31
750.70
688.32
725.28
725.34
710.48
736.87
765.74
703.49
654.98
758.09
763.87
658.63
659.43
658.32
658.47
680.37
690.13
696.22
673.30
673.09
676.72
766.34
728.77
723.39
727.10
670.16
TABLE 2-1
2018 CAMA WATER ELEVATIONS
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS, LLC, MOORESBORO, NC
Quarter 2
Groundwater Elevation
(Ft - NAVD-88)
04/26/2018
Quarter 3
Groundwater Elevation
(Ft - NAVD-88)
07/30/2018
Quarter 4
Groundwater Elevation
(Ft - NAVD-88)
10/22/2018
Screened
Interval
(Ft-BGS)
764.68
763.54
763.79
15.0
1 20.0
661.94
659.38
660.00
6.0
16.0
661.71
659.43
659.96
20.0
25.0
--
660.21
660.81
12.0
27.0
--
660.32
661.12
38.0
43.0
--
683.93
683.73
7.0
17.0
--
680.04
680.69
22.0
27.0
--
--
--
69.9
74.9
751.29
751.03
750.76
47.5
57.5
689.53
689.18
689.17
43.0
53.0
726.24
726.54
726.11
93.0
103.0
726.41
726.59
726.17
49.0
59.0
--
--
--
94.0
104.0
738.37
737.72
737.58
50.0
60.0
767.64
765.95
765.95
20.0
30.0
704.85
704.47
704.64
25.0
35.0
658.82
654.96
656.46
8.0
1 18.0
759.24
--
--
30.0
40.0
764.62
764.37
753.31
33.0
73.0
661.08
660.20
660.66
47.6
52.6
660.64
659.99
660.45
12.0
27.0
660.65
658.49
659.05
37.0
42.0
660.46
658.75
659.29
12.0
27.0
681.84
681.51
681.78
48.0
53.0
691.43
691.24
691.46
19.0
34.0
698.56
697.94
698.13
80.5
85.5
676.40
677.04
676.86
118.5
128.5
676.28
677.13
676.84
48.0
53.0
--
678.29
677.70
21.3
36.3
769.74
769.08
767.96
22.8
27.8
729.83
728.60
728.52
54.0
59.0
724.76
1 723.63
723.65
25.0
30.0
728.43
727.64
727.54
4.5
19.5
672.28
670.97
671.34
60.6
65.6
Monitoring Zone
Deep
Shallow
Deep
Shallow
Deep
Shallow
Bedrock
Shallow
Shallow
Shallow
Shallow
Shallow
Shallow
Shallow
Shallow
Shallow
Shallow
Shallow
Shallow
Deep
Shallow
Deep
Shallow
Bedrock
Bedrock
Deep
Shallow
Deep
Bedrock
Deep
Shallow
Bedrock
DeeD
Page 3 of 7

Well ID
P WELLS
GWA-21S
GWA-22BRU
GWA-22S
GWA-23D
GWA-24BR
GWA-24D
GWA-24S
GWA-25D
GWA-25S
GWA-26D
GWA-26S
GWA-27BR
GWA-27D-A
GWA-28BR
GWA-28BRU
GWA-28S
GWA-29BRA
GWA-29D
GWA-2BR
GWA-2BRU
GWA-2S
GWA-30BR
GWA-30BRU
GWA-30S
GWA-31 BR -A
GWA-31D
GWA-32BR
GWA-32D
GWA-33BR
GWA-33D
GWA-33S
GWA-34S
GWA-34BR
GWA-35D
Quarter 1
Groundwater Elevation
(Ft - NAVD-88)
01/26/2018
TABLE 2-1
2018 CAMA WATER ELEVATIONS
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS, LLC, MOORESBORO, NC
Quarter 2
Groundwater Elevation
(Ft - NAVD-88)
04/26/2018
Quarter 3
Groundwater Elevation
(Ft - NAVD-88)
07/30/2018
Quarter 4
Groundwater Elevation
(Ft - NAVD-88)
10/22/2018
Screened
Interval
(Ft-BGS)
--
668.57
--
--
5.5
15.5
653.69
656.17
652.95
653.56
17.0
22.0
656.67
659.30
656.34
656.97
2.6
12.6
760.68
761.25
760.56
760.37
23.5
28.5
772.90
781.72
779.19
777.30
65.0
70.0
772.12
779.91
774.77
774.34
28.0
33.0
--
779.05
773.17
--
14.0
24.0
769.01
770.17
769.30
769.24
36.5
41.5
768.99
770.13
769.67
769.21
10.0
25.0
763.37
766.42
764.29
764.15
68.6
73.8
762.76
765.49
763.67
763.48
10.2
25.2
757.63
758.35
757.55
757.28
103.9
1 108.9
756.26
757.47
756.16
756.04
51.0
56.0
710.42
711.58
710.56
710.62
85.0
90.0
715.97
720.00
716.33
716.60
53.9
58.9
719.31
730.70
--
722.46
22.5
37.5
662.43
664.47
662.40
662.66
48.4
58.4
656.24
658.93
655.65
656.19
20.5
1 25.5
669.66
671.19
670.16
670.47
63.0
68.0
669.62
671.12
670.08
670.40
32.4
37.4
670.94
672.70
671.89
672.16
6.0
21.0
771.63
772.43
771.62
771.74
65.0
70.0
778.00
779.76
778.29
778.53
38.0
43.0
779.90
781.14
780.77
780.53
17.5
1 27.5
680.88
696.62
681.73
696.42
116.5
126.5
737.85
737.69
737.51
737.70
10.4
15.4
666.57
668.71
666.94
667.96
60.0
65.0
665.37
672.19
666.50
668.83
35.0
40.0
696.53
698.85
698.34
698.46
85.0
90.0
715.82
719.73
716.60
717.73
26.0
31.0
716.37
720.74
717.49
718.51
5.0
15.0
703.00
1 712.13
708.10
1 708.07
14.3
29.3
--
-
--
51.0
61.0
668.61
1 670.93
1 669.21
1 669.88
62.0
67.0
Monitoring Zone
Shallow
Deep
Shallow
Deep
Bedrock
Deep
Shallow
Deep
Shallow
Deep
Shallow
Bedrock
Deep
Bedrock
Deep
Shallow
Bedrock
Deep
Bedrock
Deep
Shallow
Bedrock
Deep
Shallow
Bedrock
Deep
Bedrock
Deep
Bedrock
Deep
Shallow
Shallow
Bedrock
Deep
Shallow
Page 4 of 7

Well ID
P WELLS
GWA-36D
GWA-36S
GWA-37D
GWA-37S
GWA-38D
GWA-38S
GWA-39S
GWA-3D
GWA-40S
GWA-42S
GWA-43D
GWA-43S
GWA-44BR
GWA-44D
GWA-44S
GWA-45D
GWA-45S
GWA-46D
GWA-47D
GWA-48BR
GWA-4D
GWA-4S
GWA-51D
GWA-54D
GWA-54-BRO
GWA-54S
GWA-56D
GWA-56S
GWA-5BRU
GWA-5S
GWA-6D
GWA-6S
IB-6S2
IB-7S2
Quarter 1
Groundwater Elevation
(Ft - NAVD-88)
01/26/2018
TABLE 2-1
2018 CAMA WATER ELEVATIONS
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS, LLC, MOORESBORO, NC
Quarter 2
Groundwater Elevation
(Ft - NAVD-88)
04/26/2018
Quarter 3
Groundwater Elevation
(Ft - NAVD-88)
07/30/2018
Quarter 4
Groundwater Elevation
(Ft - NAVD-88)
10/22/2018
Screened
Interval
(Ft-BGS)
701.66
702.43
702.03
706.99
83.0
88.0
699.59
700.89
700.30
700.22
7.0
22.0
672.08
673.60
672.13
672.32
95.0
100.0
668.39
669.98
668.12
668.51
40.0
55.0
703.82
703.89
704.40
704.80
53.0
58.0
706.46
--
--
706.52
35.0
50.0
719.32
720.40
719.51
719.52
3.0
5.0
705.17
695.90
--
--
62.0
67.0
716.90
717.30
716.75
716.39
4.0
7.0
715.23
718.55
714.81
715.97
4.0
9.0
704.89
707.78
706.85
707.64
42.5
47.5
715.90
719.39
716.29
717.73
6.0
21.0
733.12
735.92
734.46
734.28
94.1
99.1
725.31
726.95
726.89
726.72
70.0
75.0
723.27
724.56
724.83
724.72
36.0
51.0
751.90
753.44
752.97
752.74
84.0
89.0
760.33
761.03
--
--
45.5
55.5
763.21
766.82
763.52
763.47
18.0
23.0
754.28
756.05
756.13
755.31
50.0
55.0
771.42
780.39
779.27
777.47
82.0
87.0
705.64
706.15
706.02
706.04
32.0
37.0
706.93
707.40
707.15
707.21
5.0
20.0
738.21
738.68
738.54
738.47
55.5
60.5
718.46
719.69
719.85
719.50
107.0
112.0
717.53
718.72
719.38
719.02
112.0
175.0
716.61
718.21
718.03
717.62
37.0
1 52.0
676.59
676.92
686.46
676.52
67.0
72.0
677.93
679.42
678.68
678.78
25.0
40.0
754.06
754.82
756.09
754.92
40.0
45.0
755.28
757.10
756.03
755.85
14.0
29.0
766.12
767.72
769.24
768.86
42.0
47.0
767.57
768.48
769.80
769.43
31.0
41.0
--
--
--
--
51.2
56.2
--
--
20.5
30.5
--
--
39.8
44.8
Monitoring Zone
Deep
Shallow
Deep
Shallow
Deep
Shallow
Shallow
Deep
Shallow
Shallow
Deep
Shallow
Bedrock
Deep
Shallow
Deep
Shallow
Deep
Deep
Bedrock
Deep
Shallow
Deep
Deep
Bedrock
Shallow
Deep
Shallow
Deep
Shallow
Deep
Shallow
Deep
Shallow
Shallow
Page 5 of 7

Well ID
P WELLS
IB-7D2
MW-10D
MW-10S
MW-11BR0
MW-11D
MW-11DA
MW-11S
M W-20D
MW-20DR
MW-21BR
MW-21D
MW-22BR
MW-22DR
MW-23D
MW-23DR
MW-23S
M W-24D
MW-24DR
MW-25DR
MW-2D-A
MW-30D
MW-30DA
MW-30S
MW-32BR
MW-32D
MW-32S
MW-34BRU
MW-34S
MW-36BRU
MW-36S
MW-38BR
M W-38D
MW-38S
MW-40BRU
Quarter 1
Groundwater Elevation
(Ft - NAVD-88)
O1/26/2018
TABLE 2-1
2018 CAMA WATER ELEVATIONS
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS, LLC, MOORESBORO, NC
Quarter 2
Groundwater Elevation
(Ft - NAVD-88)
04/26/2018
Quarter 3
Groundwater Elevation
(Ft - NAVD-88)
07/30/2018
Quarter 4
Groundwater Elevation
(Ft - NAVD-88)
10/22/2018
Screened
Interval
(Ft-BGS)
--
--
--
--
19.6
1 29.6
757.33
718.55
757.86
757.65
32.8
37.8
757.14
758.33
757.73
757.31
19.7
34.7
755.89
755.65
755.26
755.34
--
--
723.42
724.96
728.06
729.60
37.9
42.9
732.65
732.52
733.80
734.02
45.0
50.0
--
738.00
737.36
736.88
15.0
1 30.0
658.10
660.33
657.67
657.91
6.5
21.5
--
--
--
--
12.5
62.5
761.55
762.96
762.54
762.07
81.1
86.1
768.91
771.55
770.34
770.11
6.6
21.2
776.15
787.86
784.86
782.91
86.0
91.0
775.26
787.91
784.49
782.30
40.4
1 90.2
715.88
718.20
716.20
716.68
36.0
46.0
716.60
718.89
717.09
717.66
45.0
95.0
716.53
719.02
716.88
717.32
10.0
25.0
794.59
799.50
796.91
796.35
33.2
53.0
798.48
802.99
666.27
800.72
60.3
105.1
654.86
655.26
655.15
655.59
37.3
87.0
693.22
694.39
693.98
693.95
71.0
76.0
787.81
787.90
789.74
789.89
86.1
91.1
786.53
788.50
798.13
788.00
87.0
92.0
788.51
790.45
790.58
790.35
32.7
47.7
805.55
808.82
808.60
807.94
62.5
72.5
803.69
799.31
807.80
807.30
48.5
53.5
--
807.05
--
--
20.0
35.0
717.68
721.13
715.52
716.26
43.7
48.7
720.24
728.74
721.33
722.70
14.4
29.4
666.00
669.48
666.18
668.27
77.6
82.6
666.12
669.82
666.84
670.65
4.0
19.0
666.68
668.59
678.42
666.98
97.5
102.5
668.14
1 669.83
1 668.08
1 668.40
69.0
74.0
667.36
668.65
667.20
667.59
1 37.7
52.7
703.81
706.86
704.11
704.53
1 30.4
35.4
Monitoring Zone
Deep
Deep
Shallow
Bedrock
Deep
Deep
Shallow
Deep
Bedrock
Bedrock
Deep
Bedrock
Bedrock
Deep
Bedrock
Shallow
Deep
Bedrock
Bedrock
Bedrock
Deep
Deep
Shallow
Bedrock
Deep
Shallow
Deep
Shallow
Deep
Shallow
Bedrock
Deep
Shallow
Deep
Shallow
Page 6 of 7

TABLE 2-1
2018 CAMA WATER ELEVATIONS
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS, LLC, MOORESBORO, NC
Well ID
Quarter 1
Quarter 2
Quarter 3
Quarter 4
Screened
Interval
(Ft-BGS)
Monitoring Zone
Groundwater Elevation
(Ft - NAVD-88)
01/26/2018
Groundwater Elevation
(Ft - NAVD-88)
04/26/2018
Groundwater Elevation
(Ft - NAVD-88)
07/30/2018
Groundwater Elevation
(Ft - NAVD-88)
10/22/2018
IMP WELLS
MW-42DA
773.02
775.14
775.27
774.42
49.3
54.3
Deep
MW-42S
772.67
775.35
775.57
--
28.0
38.0
Shallow
M W-8D
727.26
728.29
727.09
727.03
29.8
34.8
Deep
M W-8S
730.04
730.26
730.01
729.97
2.9
17.9
Shallow
M W-7D
766.17
766.16
766.15
766.15
33.5
38.5
Deep
1.15-1D
752.09
753.44
755.10
754.69
55.0
60.0
Deep
1-15-15
751.86
753.35
755.45
755.10
39.0
54.0
Shallow
U5-2BR
721.43
725.53
726.38
725.81
100.3
105.3
Bedrock
1.15-2D
723.33
728.58
729.24
728.42
72.0
77.0
Deep
U5-2S-SL-A
730.16
734.66
735.66
--
50.0
65.0
Ash Pore Water
U5-4BR
645.93
660.54
669.88
679.65
125.1
130.1
Bedrock
1-15-4BRA
666.65
686.25
686.92
685.04
129.0
139.0
Bedrock
1.15-4D
721.11
724.78
702.02
699.73
104.2
109.2
Deep
1-15-4S
697.35
698.69
701.22
700.46
59.8
74.8
Shallow
U5-5BR
698.25
698.74
699.19
699.15
105.5
110.5
Bedrock
1.15-5D
703.24
703.95
703.93
704.02
65.5
69.5
Deep
1.15-6D
713.68
714.27
714.36
714.48
56.5
61.5
Deep
1-15-6S
713.56
714.11
714.18
714.35
37.0
52.0
Shallow
U5-8BR
765.80
762.34
756.37
762.08
120.9
125.9
Bedrock
1.15-8D
761.10
762.67
761.94
766.92
71.0
76.0
Deep
U5-8S
762.84
763.54
1 763.76
763.73
5.0
20.0
Shallow
Notes:
not measured or not available
abandoned monitoring well
z - newly installed monitoring well
BGS - below ground surface
Ft - Feet
IMP - Interim Monitoring Plan
NAVD 88 - North American Vertical Datum 1988
Prepared by: HEG Checked by: SMD
Page 7 of 7

TABLE 3-1
HORIZONTAL HYDRAULIC GRADIENTS AND FLOW VELOCITIES
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS, LLC, MOORESBORO, NC
Shallow Flow Zone
Source Area
Upgradient
Groundwater
Level h, (ft)
Downgradient
Groundwater
Level h, (ft)
K
(ft/day);
Ah
(ft)
Al
(ft)4ne
2
vs
(ft/day)
vs
(ft/yr)
Gradient
(Ah/AI)
Active Ash Basin East
765
655
0.100
110.00
3994
0.01
0.275
100.53
0.03
Active Ash Basin North
765
660
0.100
105.00
3570
0.01
0.294
107.35
0.03
Active Ash Basin West
765
715
0.100
1 50.00
32041
0.01
0.156
56.96
1 0.02
Active Ash Basin South
765
735
0.100
30.00
2464
0.01
0.122
44.44
0.01
Former Units 1-4 Ash Basin
705
660
0.100
45.00
1054
0.01
0.427
155.83
0.04
Unit 5 Inactive Ash Basin East
790
670
0.100
120.00
3498
0.01
0.343
125.21
0.03
Unit 5 Inactive Ash Basin West
760
670
0.100
90.00
1452
0.01
0.620
226.24
0.06
Shallow Flow Zone
Geometric Mean 0.28 102.7 0.03
Average 0.32 116.7 0.03
Deep Flow Zone
Source Area
Upgradient
Groundwater
Level h, (ft)'
Downgradient
Groundwater
Level h, (ft)2
K
(ft/day)'
Ah
(ft)
Al
(ft)4
2
ne
vs
(ft/day)
vs
(ft/yr)
Gradient
(Ah/AI)
Active Ash Basin East
770
660
0.100
110.00
4244
0.01
0.259
94.60
0.03
Active Ash Basin North
765
660
0.100
105.00
3208
0.01
0.327
119.47
0.03
Active Ash Basin West
765
715
0.100
50.00
28741
0.01
0.174
1 63.50
0.02
Active Ash Basin South*
Former Units 1-4 Ash Basin
705
660
0.100
45.00
1068
0.01
0.421
153.79
0.04
Unit 5 Inactive Ash Basin East
765
675
0.100
90.00
1478
0.01
0.609
222.26
0.06
Unit 5 Inactive Ash Basin West
765
675
0.100
90.00
2138
0.01
0.421
153.65
0.04
Deep Flow Zone
Geometric Mean 0.34 124.8 0.03
Average 0.37 134.5 0.04
Bedrock Flow Zone
Source Area
Upgradient
Groundwater
Level hl (ft)
Downgradient
Groundwater
Level h, (ft)
K
(ft/day)3
Ah
(ft)
Al
(ft)4ne
2
vs
(ft/day)
vs
(ft/yr)
Gradient
(Ah/AI)
Active Ash Basin East
760
680
0.100
80.00
2976
0.01
0.269
98.12
0.03
Active Ash Basin North
775
660
0.100
115.00
3430
0.01
0.335
122.38
0.03
Active Ash Basin West
775
720
0.100
55.00
30941
0.01
0.178
64.88
1 0.02
Active Ash Basin South
775
760
0.100
15.00
1104
0.01
0.136
49.59
0.01
Former Units 1-4 Ash Basin
695
660
0.100
35.00
1088
0.01
0.322
117.42
0.03
Unit 5 Inactive Ash Basin East
770
675
0.100
95.00
2954
0.01
0.322
117.38
0.03
Unit 5 Inactive Ash Basin West
720
670
0.100
50.00
784
0.01
0.638
232.78
0.06
Bedrock Flow Zone
Geometric Mean 0.28 104.0 0.03
Average 0.32 117.4 0.03
Prepared by: GTC Checked by: SMD
Notes:
* - Calculations were not performed for the deep flow zone for Active Ash Basin South due to insufficient deep data in that area
- Groundwater level shown corresponds to upgradient groundwater contour on Figures 3-1 through 3-6
2 - Groundwater level shown corresponds to downgradient groundwater contour on Figures 3-1 through 3-6
3 - Values taken from Preliminary Updated Groundwater Flow and Transport Modeling Report for Cliffside Steam Station, Mooresboro, NC, November 2018 (SynTerra)
° - The length of a flow path between an upgradient and downgradient groundwater contor within the same flow zone
dh/dl - horizontal hydraulic gradient (ft/ft)
ft - feet
h - water level height in feet
K - horizontal hydraulic conductivity
I - horizontal distance between wells
n, - effective porosity
v, - horizontal seepage velocity
Ah - difference in water level height between upgradient and downgradient locations
Al - horizontal distance between upgradient and downgradient locations
Page 1 of 1

TABLE 3-2
VERTICAL HYDRAULIC GRADIENTS
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS, LLC, MOORESBORO, NC
Well ID
Monitoring
Zone
Reference
Cross -Section
Total Well
1,z
Depth
(Ft-BGS)
Water Level
Elevation
4Q-2018
Vertical Gradient
(dh/dl)
and Flow Direction
Upgradient of the ACTIVE ASH BASIN and ASH STORAGE AREA
BG-1S
Shallow
N/A
765.82
774.74
-0.0043
Upward
BG-1D
Deep
729.47
774.92
BG-1D
Deep
N/A
729.47
774.92
-0.0197
Upward
BG-1BRA
Bedrock
704.84
775.40
MW-24D
Deep
N/A
760.13
796.35
-0.1109
Upward
MW-24DR
Bedrock
708.21
800.72
GWA-24D
Deep
K-K'
760.21
774.34
-0.0869
Upward
GWA-24BR
Bedrock
725.95
777.30
Within the ACTIVE ASH BASIN
AB-3S
Ash Pore Water
K-K'
756.77
762.42
0.0023
Downward
AB-3LA15
Ash Pore Water
720.58
762.32
AB-3LA15
Ash Pore Water
K-K'
720.58
762.32
-0.0043
Upward
AB-3I
Shallow
691.72
762.44
AB-3I
Shallow
K-K'
691.72
762.44
0.4973
Downward
AB-3BRUA
Deep
663.26
746.99
AB-3BRUA
Deep
K-K'
663.26
746.99
0.0736
Downward
AB-3BR
Bedrock
607.91
743.10
AB-4S
Ash Pore Water
A -A' and K-K'
748.51
761.26
-0.0062
Upward
AB-4LA15
Ash Pore Water
729.08
761.40
AB-4LA15
Ash Pore Water
A -A' and K-K'
729.08
761.40
-0.0130
Upward
AB-4D
Deep
708.54
761.69
AB-4D
Deep
A -A' and K-K'
708.54
761.69
0.0935
Downward
AB-4BR
Bedrock
659.06
757.06
AB-5S
Ash Pore Water
N/A
746.69
763.43
-0.0147
Upward
AB-5BRU
Deep
704.22
764.17
AB-5BRU
Deep
N/A
704.22
764.17
1.0029
Downward
AB-5BRU
Bedrock
673.00
732.81
AB-6S
Ash Pore Water
A-A'
766.48
764.21
-0.0061
Upward
AB-6D
Deep
697.83
764.66
AB-6D
Deep
A -A'
697.83
764.66
0.1910
Downward
AB-6BR
Bedrock
667.61
758.87
Beneath and Downgradient of ACTIVE ASH BASIN
UPSTREAM
DAM
AB-2S
Shallow
K-K'
724.53
743.22
0.3064
Downward
AB-2D
Deep
695.97
734.47
AB-2D
Deep
K K'
695.97
734.47
Upward
p
AB- BR
Bedrock
701.75
742.79
GWA-20S
Shallow
K-K'
715.00
727.54
0.2532
Downward
GWA-20D
Deep
704.59
723.65
Page 1 of 4

TABLE 3-2
VERTICAL HYDRAULIC GRADIENTS
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS, LLC, MOORESBORO, NC
Well ID
Monitoring
Zone
Reference
Cross -Section
Total Well
l,z
Depth
(Ft-BGS)
Water Level
Elevation
4Q-2018
Vertical Gradient
(dh/dl)
and Flow Direction
Beneath and Downgradient of ACTIVE ASH BASIN
UPSTREAM DAM (Continued)
GWA-20D
Deep
K-K'
704.59
723.65
-0.1678
Upward
GWA-20BR
Bedrock
675.26
728.52
Beneath and Downgradient of ACTIVE ASH BASIN
DOWNSTREAM DAM
AB-1S
Shallow
N/A
704.80
734.37
0.3686
Downward
AB-1D
Deep
647.23
711.31
AB-1D
Deep
N/A
647.23
711.31
U ward
P
AB-1BROR
Bedrock
597.9
713.96
MW-11S
Shallow
N/A
732.10
736.88
0.1158
Downward
MW-11DA
Deep
712.43
734.02
MW-11DA
Deep
N/A
712.43
734.02
U ward
P
MW-11BRO
Bedrock
587.26
755.34
GWA-21BRU
Deep
A-A'
645.90
659.70
-0.2877
Upward
GWA-21BR
Bedrock
604.89
671.34
MW-20D
Deep
N/A
641.13
657.91
MW-20DR
Bedrock
600.26
--
Within the ASH
STORAGE AREA
AS-1SB
Shallow
J-J'
708.46
729.81
0.0675
Downward
AS-1D
Deep
696.68
728.61
AS-7S
Ash Pore Water
J-J'
697.11
709.75
0.0894
Downward
AS-7D
Deep
653.54
705.41
AS-7D
Deep
J-J'
653.54
705.41
0.3378
Downward
AS-7BRA
Bedrock
604.37
689.64
AS-8S
Ash Pore Water
N/A
687.09
699.79
0.2192
Downward
AS-8D
Deep
657.14
692.13
Downgradient of ASH STORAGE AREA
AS-2S
Shallow
J-J'
665.43
673.20
0.1793
Downward
AS-2D
Deep
635.62
666.96
AS-2D
Deep
635.62
666.96
0.2405
Downward
AS-2BR
Bedrock
600.12
658.42
Upgradient of the FORMER UNITS 1-4 ASH BASIN
GWA-38S
Shallow
H-H'
706.85
706.52
0.1348
Downward
GWA-38D
Deep
699.28
704.80
GWA-14S
Shallow
H-H'
676.41
677.70
0.0400
Downward
GWA-14D
Deep
659.85
676.84
GWA-14D
Deep
H-H'
659.85
676.84
-0.0002
Upward
GWA-14BR
Bedrock
676.41
676.86
Page 2 of 4

TABLE 3-2
VERTICAL HYDRAULIC GRADIENTS
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS, LLC, MOORESBORO, NC
Well ID
Monitoring
Zone
Reference
Cross -Section
Total Well
1,z
Depth
(Ft-BGS)
Water Level
Elevation
4Q-2018
Vertical Gradient
(dh/dl)
and Flow Direction
Downgradient of the FORMER UNITS
1-4 ASH BASIN
GWA-10S
Shallow
B-B'3
652.98
660.45
-0.0069
Upward
GWA-10D
Deep
627.57
660.66
GWA-11S
Shallow
B-Bi3 and H-H'
648.46
659.29
0.0120
Downward
GWA-11BRU
Deep
633.42
659.05
CCR-IB-1S
Shallow
N/A
653.22
660.00
0.0034
Downward
CCR-IB-1D
Deep
643.62
659.96
Upgradient of the UNIT 5 INACTIVE
ASH BASIN
MW-32D
Deep
N/A
783.75
807.30
-0.0042
Upward
MW-32BR
Bedrock
631.58
807.94
GWA-30S
Shallow
N/A
761.91
780.53
0.1107
Downward
GWA-30BRU
Deep
761.88
778.53
GWA-30BRU
Deep
N/A
761.88
778.53
0.2528
Downward
GWA-30BR
Bedrock
735.01
771.74
Within the UNIT 5 INACTIVE ASH
BASIN
U5-2D
Deep
D-D'
714.99
728.42
0.0926
Downward
U5-2BR
Bedrock
686.80
725.81
U5-8S
Shallow
L-L'
750.63
763.73
-0.0523
Upward
U5-8D
Deep
694.57
766.92
U5-8D
Deep
L-L'
694.57
766.92
0.0970
Downward
U5-8BR
Bedrock
644.64
762.08
Beneath and Downgradient of the UNIT 5 INACTIVE
ASH BASIN MAIN DAM
U5-4S
Shallow
N/A
690.38
700.46
0.0185
Downward
U5-4D
Deep
656.01
699.73
U5-4D
Deep
N/A
656.01
699.73
0.5406
Downward
U5-4BRA
Bedrock
626.34
685.04
GWA-2S
Shallow
E-E'
662.62
672.16
0.0809
Downward
GWA-2BRU
Deep
645.86
670.40
GWA-2BRU
Deep
E-E'
645.86
670.40
-0.0022
Upward
GWA-2BR
Bedrock
614.41
670.47
GWA-35S
Shallow
E-E' and M-M'3
660.69
671.21
0.0355
Downward
GWA-35D
Deep
628.25
669.88
Beneath and Downgradient of the UNIT 5 INACTIVE
ASH BASIN SADDLE DAM
U5-6S
Shallow
D-D'
713.64
714.351
-0.0091
Upward
U5-6D
Deep
703.93
714.48
GWA-4S
Shallow
D-D'
689.83
707.207
0.0533
Downward
GWA-4D
Deep
672.84
706.04
GWA-36S
Shallow
N/A
685.80
700.22
-0.0950
Upward
GWA-36D
Deep
619.52
706.99
Page 3 of 4

TABLE 3-2
VERTICAL HYDRAULIC GRADIENTS
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS, LLC, MOORESBORO, NC
Total Well
Water Level
Vertical Gradient
Well ID
Monitoring
Reference
1,z
Depth
Elevation
(dh/dl)
Zone
Cross -Section
(Ft-BGS)
4Q-2018
and Flow Direction
Beneath and Downgradient of the UNIT 5 INACTIVE ASH BASIN SADDLE DAM (Continued)
GWA-37S
Shallow
L-L'
652.59
668.51
-0.0763
Upward
GWA-37D
Deep
607.67
672.32
Notes: Prepared by: JYT Checked by: SMD
1 - "Boring Depth" is the total depth of soil boring; "Total Well Depth" is the depth to the bottom of the filter pack.
Z Values measured during well installation
s General cross section figure provided in 2018 CSA Update but not included in this 2018 CAMA Annual Report.
BGS - Below ground surface
NAVD 88 - North American Vertical Datum 1988
Page 4 of 4

TABLE 3-3
2018 COMPREHENSIVE GROUNDWATER QUALITY DATA
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS LLC, MOORESBORO NC
Analytical Parameters
FIELD PARAMETERS
WATER QUALITY PARAMETERS
SELECTED 40CFR257 APPENDIX III CONSTITUENTS plus Sr
INORGANIC PARAMETERS (TOTAL CONCENTRATION)
pH
Water
Level
Temp
Spec
Cond
DO
ORP
Eh
Turbidity
Alkalinity
Bi-
carbonate
Alkalinity
Sulfide
Total
Organic
Carbon
Total
Suspended
Solids
Boron
Calcium
Chloride
Strontium
Sulfate
Total
Dissolved
Solids
Aluminum
Antimony
Arsenic
Barium
Beryllium
Cadmium
Chromium
(VI)
Chromium
Reporting Units
S.U.
ft
Deg C
umhos/cm
mg/L
mV
mV
NTUs
mg/L
mg/L
mg/L
mg/L
mg/L
ug/L
mg/L
mg/L
ug/L
mg/L
mg/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
15A NCAC 02L Standard
6.5-8.5
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
700
NE
250
NE
250
Soo
NE
1*
10
700
4*
2
10
10
Background Threshold Values (Shallow Flow Zone)
4.4-6.1
NE
NE
NE
NE
NE
NE
NE
13.67
14.42
0.1
1
NE
50
3.221
7.7
36.71
1.169
75.47
253
1
0.5
73.03
0.188
1
0.452
3.968
Background Threshold Values (Deep Flow Zone)
4.8-6.1
NE
NE
NE
NE
NE
NE
NE
19.74
18.13
0.1
1
NE
50
11
5.1
56.14
10
70.98
290
1
0.763
23
0.2
1
0.16
1.791
Background Threshold Values (Bedrock Flow Zone)
5.4-7.4
NE
NE
NE
I NE
I NE
I NE
I NE
I 53
68.82
1 0.1
1
NE
50
16
8.656
107.1
15.1
120
208.2
1
1
19.33
1
1
0.12
3.567
Sample ID
Sample Location
Aquifer Name
Sample
Collection Date
Analytical Results
AB-01BROR
Bedrock
05/04/2018
6.7
61.02
16
480
0.04
-28
177
0.9
NA
NA
NA
NA
NA
511
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
AB-01BROR
Bedrock
08/03/2018
7.0
59.43
21
524
1.30
-89
116
4.4
179
179
<0.1
1.3
9.2
506
79.8
48.5
268
23.1
324
172
0.078j
0.13
19.1
<0.1
<0.08
0.038
32.1
AB-01BROR
Bedrock
10/29/2018
7.1
59.50
21
564
0.10
-182
23
9.4
273
273
<0.1
2.6
15
219
98.8
22.3
283
3.6
346
290
0.11j
0.19
16.3
0.018j
<0.08
0.048
3.9
AB-01D
Deep
02/01/2018
6.6
62.12
12
454
0.90
7
212
5.1
88.7
88.7
<0.1
<1
12.1
599
50.9
57.7
232
31.9
241
200
<0.5
0.19
22.2
<0.1
<0.08
<0.025
4.9
AB-01D
Deep
05/02/2018
6.5
62.50
23
447
0.40
-41
164
7.6
84.4
84.4
<0.1
0.74j
4.4
575
51.5
63.1
220
32.1
278
194
<0.5
0.14 SI
18
<0.1
<0.08
<0.025
6
AB-01D
Deep
08/02/2018
6.6
62.00
28
470
0.70
-104
101
7.3
80.6
80.6
<0.1
<1
9.1
692
55.2
73.1 M1
243
36.1
300
391 S1
<0.5
0.087j
19.2
<0.1
<0.08
<0.025
0.94
AB-01D
Deep
10/29/2018
6.6
62.30
15
460
1.20
-16
190
1.8
66.2
66.2
<0.1
0.81 j
<2.5
777
53.6
72.6
234
32.3
303
<100
<0.5
0.054 j
18.3
0.015 j
<0.08
<0.025
0.32 j
AB-01S
Shallow
02/01/2018
5.5
39.16
13
168
0.30
170
375
9.2
14.9
14.9
<0.1
<1
6.4
<50
5.68
34.6
29.1
3.2
76
341
<0.5
0.39
98.5
<0.1
0.46 SI
<0.025
0.6 S1
AB-01S
Shallow
05/02/2018
5.3
38.99
27
175
0.50
125
330
9.4
14
14
<0.1
<1
3.1
<50
5.67
37.9
25.8
3.7 M1
102
796
<0.5
0.37 S1
90.8
0.054j
0.41
<0.025
0.28 j,S1
AB-01S
Shallow
08/03/2018
5.4
39.05
23
185
0.40
88
293
2.4
12.6
12.6
<0.1
<1 M1
<2.5
<50
5.14
42.7
28.4
3.2
108
73.8 j
<0.5
0.15
113
0.062 j
0.35
<0.025
0.36 j
AB-01S
Shallow
10/29/2018
5.2
38.60
17
186
0.20
5
210
1.1
9.9
9.9
<0.1
1.6 S1
4.7 S1
<50
5
41.1
28.3
3
98
116
<0.5
0.26
117
0.064 j
0.47
<0.025
0.22 j
AB-02BRO
Bedrock
02/05/2018
6.6
30.63
11
449
0.50
-23
182
9.3
51.2
51.2
<0.1 M1
<1
18.4
557
45
58.6
503
53.1
282
<100
<0.5
0.46
28.2
<0.1
<0.08
<0.025
1.1
AB-02BRO
Bedrock
05/02/2018
7.2
29.75
20
451
0.10
-181
24
9.5
NA
NA
NA
NA
NA
357
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
AB-02BRO
Bedrock
08/03/2018
7.0
30.90
21
495
0.70
-144
61
4.8
77.6
77.6
<0.1
0.65j
31.7
533
59.5
62.9
546
53.5
295
145
<0.5
0.59
35.2
<0.1
<0.08
<0.025
1.1
AB-02BRO
Bedrock
10/30/2018
6.6
30.54
20
438
0.10
-136
69
9.9
43.8
43.8
<0.1
0.89j
10.5
461
41.9
65.3
521
47.6
227
124
0.21j
0.89
36.3
<0.1
<0.08
<0.025
28.5
AB-02D
Deep
01/30/2018
6.6
37.42
18
429
0.10
-77
129
9.9
39.1
39.1
<0.1 R1
<1
13.8 S1
307
32.3
57.3
340
56.8
233
<100
<0.5
0.13 S1
47.6
<0.1
<0.08
<0.025
14.9
AB-02D
Deep
05/02/2018
7.3
40.48
28
477
0.30
-178
27
9.3
78
78
<0.1
0.89j
17.3
252
20.8
53.1
301
46.9
271
<100
<0.5
0.083 j,S1
40.8
<0.1
<0.08
<0.025
0.64 S1
AB-02D
Deep
08/03/2018
6.7
38.21
26
444
0.10
-147
58
9.9
71.3
71.3
<0.1
0.93j
39.9
301
30.4
55.4
427
46.4
258
140
0.77
0.17
67.9
<0.1
<0.08
0.037
6
AB-02D
Deep
10/30/2018
6.3
38.50
21
429
0.05
-109
96
7.8
42.3
42.3
<0.1
0.91 j
15.3
334
36.4
59.3
306
53.1
244
<100
<0.5
0.13
41.6
<0.1
<0.08
<0.025
3.6
AB-025
Shallow
01/30/2018
5.6
29.29
14
186
0.60
143
348
9.8
13.2
13.2
<0.1
<1
7.2 S1
852
7.92
33.8
181
11.7
102
2680
<0.5
0.64 S1
196
<0.1
<0.08
<0.025
1.8 S1
AB-02S
Shallow
05/02/2018
5.4
28.80
26
237
0.30
-98
107
9.6
8.5
8.5
<0.1
0.58j
7.2
170
10.5
47.9
59.9
15.6
48
433
0.21 j,S1
0.34 SI
48.4
<0.1
0.077j
<0.025
1.5
AB-02S
Shallow
08/03/2018
5.9
29.62
23
175
0.80
-30
175
9.1
15.3
15.3
<0.1
0.97j
5.7
192
10.1
30.9 M1
39.4
13.2
105
70.8j
0.086j
0.25
39.7
<0.1
0.46
<0.025 M1,R1
0.28j
AB-02S
Shallow
10/30/2018
5.4
29.70
18
211
0.10
38
243
8.2
15
15
<0.1
1.6
5.8
189
12.7
38.5
52
18.6
137
149
0.14j
1
48.3
0.01j
0.14
<0.025
23
AB-03BR
Bedrock
10/31/2018
12.4
54.77
21
9920
0.10
-211
-6
2.8
2350
<5
0.068j
19.9 M1
4.8
46j
12.3
4.3
2970
127
2860
8770
133
8.1
128
0.01j
<0.08
4.6
11.2
AB-03BRA
Bedrock
11/01/2018
9.3
36.05
21
266
0.40
49
254
65.2
120
94.1
0.59
3
8.9
3.9
62.3
15.5
520
7240
3.6
6.1
29.6
0.75
0.1
<0.025
7.9 BC
AB-03BRUA
Deep
01/29/2018
12.1
34.23
17
1387
0.50
-163
43
4.5
302 M1
<5
<0.1
1.8
6.7
<50
3.72
7
344
86.7
520
950
6.4
1.8
34.1
<0.1
<0.08
5.4
7.5
AB-03BRUA
Deep
04/26/2018
11.4
41.97
19
1235
0.70
-72
133
8.5
240
<5
0.65
3.2
6 D6
72.5
7.7
13.3
389
173
606
984
4.3
4
27.5
<0.1
<0.08
<0.05
2.8
AB-03BRUA
Deep
07/31/2018
11.2
44.07
26
1485
0.30
-154
52
9.1
340
<5
<0.1
2.6
5.9
56.1
2.62
9.7
273
108
634
1400
8.7
2.8 S1
21.5
<0.1
<0.08
0.051 S1
2.2 S1
AB-03BRUA
Deep
10/23/2018
11.4
48.92
18
1399
0.20
-83
122
6.5
346
<5
<0.1
2.8
4.4
53.3
1.8
9.7
233
114
580
1350
12.1
3.3
23.8
0.021j
<0.08
0.048
4
AB-03I
Shallow
01/29/2018
6.7
32.76
17
109
0.60
47
252
8.6
52.4
52.4
<0.1
<1
6
63.2
9.04
1.1
139
3.5
56 D6,S1
270
0.94
4.5
99.2
<0.1
<0.08
0.5 M1
0.99 S1
AB-03I
Shallow
04/26/2018
6.7
32.60
20
105
0.70
-97
108
9.8
38
38
<0.1
<1
16.9
44.5 j
9.16
0.98 j
132
2.7
<25
529
0.99
3.6
88.8
<0.1
0.033 j
0.3
7.4
AB-03I
Shallow
07/31/2018
6.5
33.37
26
106
0.60
79
284
9.1
49.4
49.4
<0.1
<1
3.4
56.6
6.01
1.6
119
2.2
85
282 S3
1.3
3 S1
103
<0.1
0.04 j
0.22 SI
0.66 SI
AB-03I
Shallow
10/23/2018
6.3
33.50
17
99
0.50
58
263
7.6
47.4
47.4
<0.1
<1
9.9
45 j
6.8
1.3
117
2.6
75
212
0.97
2.6
84.5
0.024 j
<0.08
0.42
0.65 S1,B
AB-03LA15
Ash Pore Water
08/06/2018
9.7
34.15
24
306
0.20
32
237
1.1
31.5
20.7
<0.1
<1
<2.5
1050
33.8
33.8
772
59.4
196
1900
4.3
400
181
<0.1
<0.08
<0.025
0.27j
AB-03LA15
Ash Pore Water
10/23/2018
10.0
34.56
22
295
0.10
-84
121
0.0
29.3
6.9
<0.1
<1
<2.5
1040
33.7
32.5
770
56.5
182
1850
4.1
404
180
<0.1
<0.08
<0.025
2.2
AB-03MA15
Ash Pore Water
08/06/2018
9.7
34.23
23
455
0.10
-380
-175
0.3
38.7
24.4
<0.1
<1
<2.5
1660
65.5 M1
50.7
1280
118
323
2600
7.4
259
149
0.041j
0.032j
<0.025
0.34j
AB-03MA15
Ash Pore Water
10/23/2018
9.7
34.55
21
434
0.03
-244
-39
0.0
35.9
11.1
0.077j
<1
<2.5
1610
59.1
45.8
1140
99
296
2360
7.4
270
146
<0.1
<0.08
<0.025
1.2 S1
AB-03S
Ash Pore Water
01/29/2018
7.5
32.71
19
887
0.30
-132
73
7.9
138
138
<0.1
<1
7.8 D6
2500
152
62.1
2140
234
588
238
0.65
265
60.8
<0.1
<0.08
<0.025
0.6 S1
AB-03S
Ash Pore Water
04/27/2018
7.3
32.49
21
626
0.20
-32
173
4.8
65.4
65.4
<0.1
<1
<5
2280
94.4
64.8
1580
141
414
231
0.82
234
74.6
<0.1
<0.08
<0.025
14.7
AB-03S
Ash Pore Water
07/31/2018
7.2
33.07
24
1632
0.10
-148
57
6.8
330 M1
330
<0.1
0.65j
19.8
3190
307
68.3
3910
487
1330
229
0.3j
501
96.3
<0.1
0.033j
<0.025
0.29 j,S1
AB-03S
Ash Pore Water
10/23/2018
7.5
33.19
22
748
0.10
-166
39
5.6
108
108
<0.1
<1
16.6
2200
115
77.5
1640
171
499
523
0.75
287
68.2
0.11
<0.08
<0.025
0.66 S1,B
AB-03SL
Ash Pore Water
01/29/2018
9.9
32.90
19
301
0.10
-53
152
8.7
31.1
26
<0.1
<1
6
1040
36.4
31
888
61.9
177
2130
4.6
785
214
<0.1
<0.08
<0.025
1.9 S1
AB-03SL
Ash Pore Water
10/31/2018
9.2
33.62
23
286
0.04
-165
40
6.4
27.7
23.2
<0.1
<1
3.2
1130
34.7
29.8
870
62.1
191
1360
4.6
934
165
0.021j
<0.08
<0.025
1 S1
AB-03SLA
Ash Pore Water
01/29/2018
10.0
33.77
17
307
0.10
32
237
7.5
29.3
26.2
<0.1
<1
6.6
1070
36.3
32.2
993
64
184
2080
4.2
825
180
<0.1
<0.08
<0.025
1 S1
AB-03SLA
Ash Pore Water
04/27/2018
9.8
33.56
23
311
0.10
-375
-170
6.8
30
30
<0.1
<1
9.9
1040
36.2
31.9
933
62.7
203
1990
4.6
784
176
<0.1
<0.08
<0.025
1.5 SS
AB-03SLA
Ash Pore Water
07/31/2018
9.4
34.34
27
303
0.10
-12
193
8.8
27.7
21.7
<0.1
<1
16.3
1020
33.8
32.6
889
61.2
195
2870
3.6
991
171
0.1
<0.08
<0.025
1.3 S1
AB-03SLA
Ash Pore Water
10/23/2018
9.5
34.46
21
295
0.10
-390
-185
3.7
26.3
16.6
<0.1
<1
6
997
32
29.7
819
63.3
183
1370
3.5
1020
134
0.04j
<0.08
<0.025
IA S1
AB-04BR
Bedrock
01/26/2018
6.6
13.29
16
157
0.50
-49
156
4.5
84
84
<0.1
<1
<5
<50
15.9
4.1
114
3
112
<100
<0.5
<0.1
6.2
<0.1
<0.08
<0.025
<0.5
AB-04BR
Bedrock
04/30/2018
6.0
13.29
18
171
0.30
9
214
8.6
74.9
74.9
<0.1
<1
11.2
38.1 j
17.2
4.4
108
3.5
125
<100
<0.5
0.058 j,S1
5.9
0.086 j
<0.08
<0.025
0.2 j,S1
AB-04BR
Bedrock
07/30/2018
6.2
13.48
23
161
0.30
-1
204
8.3
65.1
65.1
<0.1
<1
2.7
47.2 j
15.7
4.4
100
3.7
126
<100
<0.5
<0.1
5.1
<0.1
<0.08
<0.025
0.36 j
AB-04BR
Bedrock
10/22/2018
6.4
13.51
20
191
0.60
-27
178
7.8
64
64
<0.1
<1
12.5
48.5 j
15.4
4.4
114
3.4
114
<100
<0.5
<0.1
7
0.11
<0.08
<0.025
0.39 j,S1
AB-04D
Deep
01/26/2018
5.2
8.65
17
31
0.30
403
608
0.1
<5
<5
<0.1
<1
<2.6
<50
0.578
3.7 M1
8.7
<1 M1
<25
114
<0.5
0.2
19.4
<0.1
<0.08
0.58
1.2 S1
AB-04D
Deep
04/30/2018
4.5
8.57
17
34
0.20
231
436
2.6
3.7 j
3.7 j
<0.1
<1
<2.5
<50
0.664
4
9.3
<1
<25
141
<0.5
0.14 SI
16.8
0.075 j
<0.08
0.073 SI
0.38 j,S1
Page 1 of 45

TABLE 3-3
2018 COMPREHENSIVE GROUNDWATER QUALITY DATA
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS LLC, MOORESBORO NC
Analytical Parameters
INORGANIC PARAMETERS (TOTAL CONCENTRATION)
INORGANIC PARAMETERS (DISSOLVED CONCENTRATION WITH FILTER SIZE)
Cobalt
Copper
Iron
Lead
Lithium
Magnesium
Manganese
Mercury
Molybdenum
Nickel
Nitrate
+ Nitrite
Potassium
Selenium
Sodium
Thallium
Vanadium
Zinc
Aluminum
Antimony
Arsenic
Barium
Beryllium
Boron
Cadmium
Chromium
Cobalt
Reporting Units
ug/L
ug/L
ug/L
ug/L
ug/L
mg/L
ug/L
ug/L
ug/L
ug/L
mg-N/L
mg/L
ug/L
mg/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
15A NCAC 02L Standard
1*
1000
300
15
NE
NE
50
1
NE
100
NE
NE
20
NE
0.2*
0.3*
1000
NE
NE
NE
NE
NE
NE
NE
NE
NE
Background Threshold Values (Shallow Flow Zone)
10.65
6.569
765.3
1
NE
2.479
168.8
0.2
1
6.256
8.837
5
1
6.139
0.117
1.059
15
NE
NE
NE
NE
NE
NE
NE
NE
NE
Background Threshold Values (Deep Flow Zone)
9.041
9.453
559.7
1
NE
1.6
78.31
0.2
1
12.56
2.8
5
1
4.41
0.063
1.095
15.03
NE
NE
NE
NE
NE
NE
NE
NE
NE
Background Threshold Values (Bedrock Flow Zone)
1.497
5
6220
1
NE
1 2.328
89.4
1 0.2
1.716
5
0.92
5
1
1 7.42
0.1
0.37
10
NE
NE
NE
NE
NE
NE
I NE
NE
NE
Sample ID
Sample Location
Aquifer Name
Sample
Collection Date
Analytical Results
AB-01BROR
Bedrock
05/04/2018
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
AB-01BROR
Bedrock
08/03/2018
5
<0.5
2210
0.094 j
6.1
5.19
2540
<0.2
0.96
23.3
<0.02
3.54 j
<0.5
16.6
<0.1
0.17 j
<10
77.5 j
<0.5
0.11
15.2
<0.1
430
<0.08
13.2
5.1
AB-01BROR
Bedrock
10/29/2018
2.9
0.66
1090
0.22
8.2
5.8
1170
<0.2
0.31 j
2.1
<0.02
3.6 j
<0.5
19.4
<0.1
0.5
11.5
<100
<0.5
0.097 j
13.2
<0.1
198
<0.08
0.31 j,S1
1.2
AB-01D
Deep
02/01/2018
0.36 SI
0.61 SI
9060
0.15 S3
5.5
6.06
2240
<0.2
0.79 S3
5.2
0.029
5.74
<0.5
13.7
<0.1
1.5
<10
<100
<0.5
0.18
18.2
<0.1
515
<0.08
<0.5
0.26
AB-01D
Deep
05/02/2018
0.34
1.2
8250
0.16
4.8 S1
6.39
2230
<0.2
1.1 S1
4 SI
0.038
5.3
<0.5
12.7
<0.1
0.12 j,B,SI
13.2
<100
<0.5
0.12
16.6
<0.1
551
<0.08
0.62
0.28
AB-01D
Deep
08/02/2018
0.3
0.98
9100
0.18
4.1
6.72
2450
<0.2
0.61
0.79
0.029
4.35 j
<0.5
12.3
<0.1
0.31 B
7.6 j
<100
<0.5
0.054 j
16.1
<0.1
640
<0.08
<0.5
0.26
AB-01D
Deep
10/29/2018
0.39
0.56
8340
<0.1
3.8
6.7
2710
<0.2
0.49 j
0.66
<0.02
4 j
<0.5
12.3
<0.1
<0.3
5.8 j
<100
<0.5
0.041 j
16.1
0.016 j
721
<0.08
<0.5
0.38
AB-01S
Shallow
02/01/2018
66
0.56 SI
1150
1.9
2.7
2.03
6070
<0.2
<0.5
4
<0.02
<5
<0.5
12.1
0.55
<0.3
21
153
<0.5
0.26
85.1
<0.1
<50
0.5
<0.5
67.7
AB-01S
Shallow
05/02/2018
67.5
0.53
2520
4.2
1.6 SI
2.31
5320
<0.2
<0.5
3.8 S1
0.056
3.69 j
<0.5
13
0.57
0.37 B,51
24.9
<100
<0.5
0.21
89.5
0.041 j
<50
0.37
0.41 j
64.9
AB-01S
Shallow
08/03/2018
70.1
0.24 j
1360
1.4
2.1
2.42
6710
<0.2
0.12 j
5.1
<0.02
3.66 j
<0.5
14.8
0.52
<0.3
10.4
<100
<0.5
0.14
95.5
0.052 j
<50
0.37
0.29 j
68.3
AB-01S
Shallow
10/29/2018
75.9
0.92 S1
1460
1.5
1.6 j,S1
2.4
6730
<0.2
8.7 S1
6.4
<0.02
3.5 j
<0.5
15.2
0.58
0.16 j
14
<100
<0.5
0.17
106
0.065 j
<50
0.56
0.1 j,S1
72.5
AB-02BRO
Bedrock
02/05/2018
11.1
<0.5
7960
0.1
1.3
6.44
1920
<0.2 M1
0.58
3.2
0.045
6.86
<0.5
14.2
<0.1
<0.3
86.1
<100
<0.5
0.41
33.1
<0.1
481
<0.08
0.55
11.1
AB-02BRO
Bedrock
05/02/2018
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
AB-02BRO
Bedrock
08/03/2018
6.2
0.63
14200
0.17
1.2
6.6
2490
<0.2
0.99
1.3 B
0.032 M1
7.25
<0.5
14.9
<0.1
0.19 j
6.8 j
<100
<0.5
0.47
28.8
<0.1
450
<0.08
<0.5
6.3
AB-02BRO
Bedrock
10/30/2018
10.5
1.4
15200
0.14
1.3 j
6.9
2610
<0.2
1.3
20
0.065
6.7
<0.5
13.7
0.065 j
0.22 j
21.1
50.4 j
0.12 j
0.71
34.3
<0.1
431
<0.08
5.3
9.9
AB-02D
Deep
01/30/2018
6.6
0.59 S1
20900
<0.1
22.5
5.86
2960
<0.2
0.68
13.9
0.055
9.64
<0.5
14.9
<0.1
<0.3
<10
<100
<0.5
0.1
41.9
<0.1
304
<0.08
0.59
6
AB-02D
Deep
05/02/2018
0.076 j
0.17 j
7830
0.068 j
0.53 SI
4.8
1480
<0.2
<0.5
0.54 SI
<0.02
60.8
<0.5
23.5
<0.1
0.15 j,S1
<10
<100
0.13 j
0.11
38.4
<0.1
234
<0.08
1.6
3.3
AB-02D
Deep
08/03/2018
4.3
2.2
27700
0.3
91.5
6.3
2830
<0.2
0.28 j
3
0.18
43.2
<0.5
22.5
<0.1
0.078 j
8.2 j
<100
0.23 j
0.073 j
35.1
<0.1
256
<0.08
<0.5
4.3
AB-02D
Deep
10/30/2018
3.9
0.14 j
20900
<0.1
16.6
6.2
2670
<0.2
0.26 j
2.7
<0.02
8.5
<0.5
15
<0.1
<0.3
2.6 j
<100
<0.5
0.091 j,B
40.2
0.019 j
319
<0.08
0.4 j,S1
3.7
AB-02S
Shallow
01/30/2018
22
1.6 S1
21900
0.4
2.5
1.6
37000
<0.2
<0.5
2.2 S1
0.046
<5
<0.5
11.6
0.31
0.49 S1
424
<100
<0.5
0.19
34.6
<0.1
174
<0.08
0.52
24.8
AB-02S
Shallow
05/02/2018
35.3
1.5
7560
0.83
3 SI
2.14
8480 M1
<0.2
<0.5
3.5 SI
0.079
3.24 j
<0.5
13.8
0.32
0.62 B,51
205
59.2 j
0.15 j
0.1
47
<0.1
170
0.09
0.55
34.2
AB-02S
Shallow
08/03/2018
21.9
1.1
4880
0.38
1.6
1.85
8160
<0.2
0.089 j
1.8 B
0.018 j,M1
4.31 j
<0.5
10.4
0.22
0.24 j
189
<100
<0.5
0.17
33.3
<0.1
164
0.5
<0.5
23.7
AB-02S
Shallow
10/30/2018
29.5
1.9
4490
0.37
1.1 j
2.3
9550
<0.2
0.69
14.9
<0.02
4.9 j
<0.5
10.2
0.24
0.46
199
<100
0.11 j
0.82
46.2
<0.1
178
0.13
4.1
28.2
AB-03BR
Bedrock
10/31/2018
4.7
6.7
104
0.43
2640
<0.1
<5
<0.2
22.7
5.3
0.44
866
2.5
492
0.22
19.9
7.2 j
8030
130
7.3
117
0.01 j
41.4 j
<0.08
8.8
4.5
AB-03BRA
Bedrock
11/01/2018
1
7.1
3030
6.6
20.3
1.5
38.6
<0.2
10.1
.5
0.094
13.2
<0.5
53
<0.1
5.5
27.1
1370
5.7
5.7Wj
20.2
0.49
36.2 j
0.063 j
4.2
0.73
AB-03BRUA
Deep
01/29/2018
0.13
1.4 S1
138
0.2351
204
0.15
<5
<0.2
11.5
1.6
<0.02
109
<0.5
119
<0.1
4.7
<10
764
6.7
1.7
38.7
<0.1
<50
<0.08
5
0.14
AB-03BRUA
Deep
04/26/2018
0.17
0.95 S1
170
0.23
146
0.124
3.2 j
<0.2
24.1
1.8
<0.02
78.7
0.2 j
144
<0.1
2.8
5 j
641
6.7
3.2
29
<0.1
54.1
<0.08
0.57 S1
0.048 j
AB-03BRUA
Deep
07/31/2018
0.15
0.97
184
0.16
201
0.151
2.5 j
<0.2
14.5
2.1
<0.02
110 M1
0.33 j
135 M1
<0.1
4
3 j
810
10
2.9 S1
17.2
<0.1
55.9
<0.08
0.69
0.034 j
AB-03BRUA
Deep
10/23/2018
0.19
1.1 S1
144
0.31
225
0.079 j
3 j
<0.2
16.5
2.9
<0.02
117
0.4 j
146
<0.1
3.1
4.9 j
910
12
2.9
20.2
0.011 j
48.7 j
<0.08
0.34 j
0.031 j
AB-03I
Shallow
01/29/2018
0.15
0.96 SI
147
0.62 S3
6
1.49
118
<0.2
0.96
<0.5
0.16
9.3
10.4
6.54
0.32S1
2.6
<10
<100
1.1
4.2
82.7
<0.1
52.4
<0.08
0.9 S1
<0.1
AB-03I
Shallow
04/26/2018
0.27
0.89 S1
368
0.99
4.2
1.41
143
<0.2
1.3
4.3
0.27
7.38
10.5
5.45
0.33
2.9
2.7 j
<100
0.93
3.4
70.3
<0.1
39.3 j
<0.08
0.83 SI
0.072 j
AB-03I
Shallow
07/31/2018
0.15 S1
IA SI
144 SI
0.45 S3
7.9
1.18
216 S3
<0.2
0.71
0.62 S3
0.1
30
3.9 S1
8.09
0.43
2.1
4.1 j
<100
1.1
2.7 S1
93.5
<0.1
51.6
<0.08
0.3 j,B
0.059 j
AB-03I
Shallow
10/23/2018
0.16
0.65 S1
97.8
0.66
5.6 S1
1.3
95.8
<0.2
0.85
0.48 j
0.19
8.3
6.3
6.2
0.34
2.3
3 j
<100
0.9
2.4
79.5
<0.1
43 j
<0.08
0.55
0.04 j
AB-03LA15
Ash Pore Water
08/06/2018
0.02 j
0.12 j
57.5
0.067 j
188
0.306
17.6
<0.2
132
0.58
<0.02
9.83
1.4
10.9
<0.1
24.4
<10
1620
4.3
405
165
<0.1
969
<0.08
0.23 j
<0.1
AB-03LA15
Ash Pore Water
10/23/2018
0.038 j
0.21 j,S1
<50
<0.1
180
0.22
3.6 j
<0.2
132
1.8
<0.02
10.6
1.3
11.1
<0.1
21.8
<10
1640
3.9
368 M1
165
<0.1
938
<0.08
0.14 j
0.013 j
AB-03MA15
Ash Pore Water
08/06/2018
<0.1
<0.5
<50
<0.1
214
1.4
<5
<0.2
299
0.95
<0.02
10.6
1.8
9.99
<0.1
126
<10
<100
7.7
263
7.8
<0.1
34.3 j
<0.08
<0.5
<0.1
AB-03MA15
Ash Pore Water
10/23/2018
0.021 j
0.25 j,S1
<50
<0.1
222
1.3
<5
<0.2
314
0.66
<0.02
10.7
2.3
9.5
<0.1
124
<10
2190
6.9
247
142
<0.1
1550
<0.08
0.12 j
0.013 j
AB-03S
Ash Pore Water
01/29/2018
1.1
<0.5
3660
<0.1
117
15.6
1110
<0.2
70.4
2.8
<0.02
10.5
<0.5
12.8
0.65 S3
5.4
<10
128
0.61
233
57
<0.1
2400
<0.08
<0.5
1.1
AB-03S
Ash Pore Water
04/27/2018
0.53
1.2 S1
1510
0.1
140
6.22
436
<0.2
82.5
8.2
<0.02
8.27
<0.5
11.7
0.4
6.9
<10
122 B
0.82
185
67.5
<0.1
2040
<0.08
8.9
0.61
AB-03S
Ash Pore Water
07/31/2018
1.3
<0.5
8220
0.058 j
103
36.1
2520
<0.2
32.8
3.1
0.023
14.3
<0.5
16.5
0.81
2.9
3.4 j
65.6 j
0.24 j
423
86.1
<0.1
3030
<0.08
0.34 j,B
1.3
AB-03S
Ash Pore Water
10/23/2018
0.67
1 Sl
2190
0.42
134
8.2
566
<0.2
65.1
1.4
<0.02
8.8
<0.5
11.5
0.48
7.2
3.6 j
72.8 j
0.58
221
61.5
0.015 j
2200
<0.08
0.13 j
0.5
AB-03SL
Ash Pore Water
01/29/2018
0.13
0.79 SI
309
0.12 S1
202
0.974
138
<0.2
160
1.5
0.022 S3
11.1
1.9
11.2
0.12 S1
76.5
<10
1950
4.7
752
210
<0.1
1040
<0.08
0.88
0.1
AB-03SL
Ash Pore Water
10/31/2018
0.088 j,S1
0.33 j
108
0.12
196
1.4
62.1
<0.2
165
1.3
0.029 B,S1
10.5
1.4
10.8
0.069 j
62.2
2.9 j
1050
4.3
934 M6
141
<0.1
1040
<0.08
0.16 j,S1
0.023 j,S1
AB-03SLA
Ash Pore Water
01/29/2018
<0.1
<0.5
212
<0.1
225
1.25
<5
<0.2
162
1
<0.02
11.3
2.4
11.1
<0.1
76.8
<10
1970
4.1
863
194
<0.1
977
<0.08
1
<0.1
AB-03SLA
Ash Pore Water
04/27/2018
0.042 j
0.22 j,S1
92.1
0.078 j
230
1.02
<5
<0.2
156
0.96 SI
<0.02
11.1
1.6
11
0.051 j
69.3
<10
1630
4.7
775
155
<0.1
948
<0.08
<0.5
<0.1
AB-03SLA
Ash Pore Water
07/31/2018
0.35
1.5
658
0.84
218
1.45
5.1
<0.2
150
1.5
0.011 j
10.6
1.3
10.6
0.074 j
62.5
4 j
990
3.4
1060
117
<0.1
907
<0.08
0.2 j
<0.1
AB-03SLA
Ash Pore Water
10/23/2018
0.11
0.59 S1
127
0.23
221
1.4
<5
<0.2
155
1.2
<0.02
9.9
1.2
9.8
0.023 j
50.6
2.6 j
1000
3.4
1040
123
<0.1
954
<0.08
<0.5
<0.1
AB-04BR
Bedrock
01/26/2018
<0.1
<0.5
13000
<0.1
4.9
2.89
169
<0.2
<0.5
0.71 S3
0.03 SI
<5
<0.5
5.8
<0.1
<0.3
<10
<100
<0.5
<0.1
5.2
<0.1
<50
<0.08
<0.5
<0.1
AB-04BR
Bedrock
04/30/2018
0.043 j
0.33 j,S1
12300
0.04 j,S1
5.9
2.92
162
<0.2
<0.5
<0.5
0.033
3.41 j
<0.5
6.27
<0.1
<0.3
2.7 j,S1
<100
<0.5
<0.1
5.3
0.085 j
43.2 j
<0.08
0.19 j,51
0.03 j
AB-04BR
Bedrock
07/30/2018
0.033 j
0.32 j,S1
12600 P8,S1
<0.1
4.9
2.77
157 S1
<0.2
<0.5
0.21 j
0.035
<5
<0.5
5.82
<0.1
<0.3
<10
<100
<0.5
<0.1
5.1
0.1
44.7 j
<0.08
<0.5
<0.1
AB-04BR
Bedrock
10/22/2018
0.025 j
<0.5
11700
<0.1
9
2.7
152
<0.2
<0.5
<0.5
0.042
5 j
<0.5
6.2
<0.1
<0.3
2.8 j,B
<100
<0.5
<0.1
5.1
0.077 j
43 j
<0.08
<0.5
0.028 j
AB-04D
Deep
01/26/2018
5.6
5.8
<50
<0.1
2.1
0.894
168
1.7
<0.5
1.7 SI
0.21
<5
<0.5
<5
<0.1
<0.3
<10
<100
<0.5
0.14
16.8
0.1
<50
<0.08
1.9
5.4
AB-04D
Deep
04/30/2018
5.3
1.2 S1
93
0.081 j,S1
1.6
0.912
170
1.4
<0.5
1.3
0.22
<5
<0.5
2.45 j
0.063 j
<0.3
4.3 j,S1
<100
<0.5
0.052 j
16.3
0.076 j
<50
<0.08
0.43 j,S1
5.3
Page 2 of 45

TABLE 3-3
2018 COMPREHENSIVE GROUNDWATER QUALITY DATA
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS LLC, MOORESBORO NC
Analytical Parameters
INORGANIC PARAMETERS (DISSOLVED CONCENTRATION WITH FILTER SIZE)
RADIONUCLIDES
OTHER PARAMETERS
Copper
Iron
Lead
Lithium
Manganese
Mercury
Molybdenum
Nickel
Phosphorus
Selenium
Strontium
Thallium
Vanadium
Zinc
Radium-226
Radium-228
Total
Radium
Uranium-238
Total Uranium
Uranium-238
(Dissolved)
Carbonate
Alkalinity
Fluoride
Phosphorus
Reporting Units
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
mg/L
ug/L
ug/L
ug/L
ug/L
ug/L
pCi/L
pCi/L
pCi/L
ug/mL
ug/mL
ug/mL
mg/L
mg/L
mg/L
15A NCAC 02L Standard
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
5^
NE
0.03^
NE
NE
2
NE
Background Threshold Values (Shallow Flow Zone)
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
2.58
NE
0.0005
NE
5
NE
NE
Background Threshold Values (Deep Flow Zone)
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
1.51
NE
0.0005
NE
5
NE
NE
Background Threshold Values (Bedrock Flow Zone)
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
3.1
NE
0.0005
NE
5
NE
NE
Sample ID
Sample Location
Aquifer Name
Sample
Collection Date
Analytical Results
AB-OIBROR
Bedrock
05/04/2018
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
AB-01BROR
Bedrock
08/03/2018
<0.5
1850
0.057j
NA
2230
<0.2
0.69
25.7
<0.05
<0.5
238
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
0.19
<0.05
AB-OIBROR
Bedrock
1O/29/2018
<0.5
505
<0.1
NA
892
<0.2
0.24 j
1.1
<0.05
<0.5
254
<0.1
0.11 j
<10
NA
NA
NA
NA
NA
NA
<5
0.27 M1
<0.05
AB-01D
Deep
02/01/2018
0.58 B,S3
7970
<0.1
NA
2000
<0.2
0.74
2.5
<0.05
<0.5
198
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
AB-OID
Deep
05/02/2018
<0.5
7740
<0.1
NA
2140
<0.2
0.97
1.5
<0.05
<0.5
210
<0.1
0.065 j,B
3.2j
NA
NA
NA
NA
NA
0.000069j
<5
0.084j
<0.05
AB-OID
Deep
08/02/2018
0.5 n
7900
<0.1
NA
2230
<0.2
0.68
0.44 j,SI
<0.05
<0.5
221
<0.1
0.091 j,B
<10
NA
NA
NA
NA
NA
NA
<5
0.091j
<0.05
AB-OID
Deep
1O/29/2018
0.44 j
8040
<0.1
NA
2460
<0.2
0.46 j
0.55
<0.05
<0.5
218
<0.1
<0.3
3.1 j
NA
NA
NA
NA
NA
NA
<5
0.064 j
<0.05
AB-01S
Shallow
02/O1/2018
0.79 B,SI
882
1.9
NA
5370
<0.2
<0.5
4.2
<0.05
<0.5
25
0.56
<0.3
22
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
AB-OIS
Shallow
05/02/2018
2.6
1100
1.1
NA
5320
<0.2
<0.5
3.7
<0.05
<0.5
26.2
0.53
0.16j,B
23.5
NA
NA
NA
0.00014j
0.00014j
0.000055j
<5
<0.1 MI
0.033 j,SI
AB-01S
Shallow
08/03/2018
0.6
1180
1.3
NA
6010
<0.2
1.9
5.1
<0.05
<0.5
25.3
0.5
0.06 j
11.6
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
AB-OIS
Shallow
1O/29/2018
0.88 51
1300
1.4
NA
6350
<0.2
4.1
7.3
<0.05
<0.5
26.7
0.55
<0.3
13.1
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
AB-02BRO
Bedrock
02/05/2018
<0.5
7860
<0.1
NA
2150
<0.2
0.52
2.8
<0.05
<0.5
529
<0.1
<0.3
92.9
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
AB-02BRO
Bedrock
05/02/2018
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
AB-02BRO
Bedrock
08/03/2018
0.42j
11400
<0.1
NA
2140
<0.2
1
1.2
<0.05
<0.5
481
<0.1
<0.3
3.6j
NA
NA
NA
NA
NA
NA
<5
0.11
<0.05
AB-02BRO
Bedrock
10/30/2018
0.41 j,SI
13000
<0.1
NA
2390
<0.2
0.68
6.6
<0.05
<0.5
504
0.047 j
<0.3
15.1 S1
NA
NA
NA
NA
NA
NA
<5
0.11
<0.05
AB-02D
Deep
O1/30/2018
<0.5
17000
<0.1
NA
2540
<0.2
<0.5
4.6
<0.05
<0.5
300
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
AB-02D
Deep
05/02/2018
0.26j
8590
<0.1
NA
1460
<0.2
0.49j
1.7
<0.05
<0.5
283
<0.1
0.21 j,B
<10
NA
NA
NA
NA
NA
NA
<5
0.086j
<0.05
AB-02D
Deep
08/03/2018
<0.5
14600
<0.1
NA
2020
<0.2
0.26j
1.6
<0.05
<0.5
276
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
0.078j
0.04j
AB-02D
Deep
10/30/2018
0.68 SI
17700
<0.1
NA
2490
<0.2
0.18j
2.2
<0.05
<0.5
300
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
0.097j
<0.05
AB-02S
Shallow
01/30/2018
1.8
3280
0.12
NA
6690
<0.2
<0.5
1.8
<0.05
<0.5
32.8
0.33
<0.3
85.2
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
AB-02S
Shallow
05/02/2018
1.8
6880
0.26
NA
8660
<0.2
<0.5
3.4
<0.05
<0.5
59.9
0.31
0.14 j,B
185
NA
NA
NA
NA
NA
NA
<5
<0.1 MI
<0.05
AB-02S
Shallow
08/03/2018
0.84
3120
0.076j
NA
7310
<0.2
0.081j
1.8
<0.05
<0.5
32.8
0.24
0.091j
149
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
AB-02S
Shallow
10/30/2018
0.91 S1
3760
<0.1
NA
8790
<0.2
0.3 j
7
0.04 j
<0.5
50.6
0.24
0.15 j
159
NA
NA
NA
NA
NA
NA
<5
<0.1
0.056
AB-03BR
Bedrock
10/31/2018
2 SI
49.1j
0.15
NA
<5
<0.2
21.7
4.4
0.029j
2.7
2780
0.019j
19.3
3.8j
NA
NA
NA
NA
NA
NA
256
1.9
0.028j
AB-03BRA
Bedrock
11/01/2018
5.1
1140
4.6
NA
25.2
<O.2
0
3.8
0.27
<0.5
49.4
<0.1
4.3
18.3
NA
NA
NA
NA
NA
NA
26.2
1.9
0.28
AB-03BRUA
Deep
O1/29/2018
0.99
51.4
0.22
NA
<5
<0.2
12
1.9
<0.05
<0.5
385
<0.1
4.9
<10
NA
NA
NA
NA
NA
NA
240
1.3
<0.05
AB-03BRUA
Deep
04/26/2018
0.25 j,SI
<50
0.053 j,S1
NA
<5
<0.2
20.1
1.2 S1
<0.05
0.24j
319
<0.1
3.4
<10
NA
NA
NA
NA
NA
NA
136
2.3
<0.05
AB-03BRUA
Deep
07/31/2018
0.42 j,SI
<50
0.054j
NA
<5
<0.2
15.7
1.4
<0.05
0.4j
232
<0.1
4.3
<10 P8
NA
NA
NA
NA
NA
NA
174
1.7
0.027j
AB-03BRUA
Deep
10/23/2018
0.85 S1
<50
<0.1
NA
<5
<0.2
15.3
1.2
<0.05
<0.5
209
<0.1
2.7
<10
NA
NA
NA
NA
NA
NA
212
1.7
0.032j
AB-03I
Shallow
O1/29/2018
<0.5
<50
<0.1
NA
34.7
<0.2
1.3
<0.5
<0.05
11
128
0.38
2.8
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
AB-03I
Shallow
04/26/2018
0.2 j,SI
<50
0.071 j,SI
NA
65.6
<0.2
1.1
1.1 SI
<0.05
9.5
109
0.36
2.8
<10
NA
NA
NA
NA
NA
NA
<5
0.05 j
0.032 j
AB-03I
Shallow
07/31/2018
1.2 SI
<50
<0.1
NA
106
<0.2
0.92
0.48 j,B
<0.05
5
118
0.45
2
4.5 j,B
NA
NA
NA
NA
NA
NA
<5
0.05 j
0.026 j
AB-03I
Shallow
10/23/2018
0.28 j,51
<50
<0.1
NA
52.4
<0.2
0.87
<0.5
0.025 j
7
119
0.33
1.9
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
0.026 j
AB-03LA15
Ash Pore Water
08/06/2018
0.19 j
<50
<0.1
NA
16.3
<0.2
134
0.64
0.03 j
1.1
697
<0.1
24.2
<10
NA
NA
NA
NA
NA
NA
10.8
0.32
0.032 j
AB-03LA15
Ash Pore Water
10/23/2018
0.35 j,SI
<50
<0.1
NA
3.1 j
<0.2
125
0.66
0.027 j
1.2
722
<0.1
20.5
<10
NA
NA
NA
NA
NA
NA
22.4
0.32
<0.05
AB-03MA15
Ash Pore Water
08/06/2018
<0.5
<50
<0.1
NA
32.5
<0.2
300
0.37 j
<0.05
1.1
38.4
<0.1
122
<10
NA
NA
NA
NA
NA
NA
14.3
0.26
<0.05
AB-03MA15
Ash Pore Water
10/23/2018
<0.5
<50
<0.1
NA
<5
<0.2
295
0.45 j
<0.05
1.4
1120
<0.1
117
<10
NA
NA
NA
NA
NA
NA
24.8
0.25
<0.05
AB-03S
Ash Pore Water
O1/29/2018
<0.5
3120
<0.1
NA
1060
<0.2
72.9
3
0.057
<0.5
1880
0.66
4.8
<10
0
0.654
0.654
0.0016
0.0016
NA
<5
0.16
0.07
AB-03S
Ash Pore Water
04/27/2018
0.19 j,51
1080
<0.1
NA
430
<0.2
84.4
12.6
<0.05
<0.5
1460
0.4
6.1
<10
0.394 U
-0. 106 U
0.394 U
0.00052
0.00052
0.00066
<5
0.29
0.052
AB-03S
Ash Pore Water
07/31/2018
<0.5
7400
<0.1
NA
2410
<0.2
32.3
2.9 B
0.049j
<0.5
3620
0.79
2.4
2.7 j,B
-0.196 U
0.535 U
0.535 U
0.0079
0.0079
0.0076
<5
0.24
0.076
AB-03S
Ash Pore Water
10/23/2018
0.27 j,SI
1830
<0.1
NA
626
<0.2
60.1
1
0.04 j
<0.5
1720
0.44
4.3
2.6 j
0.468
-0.0435 U
0.468 U
NA
0.0012
NA
<5
0.28
0.085
AB-03SL
Ash Pore Water
01/29/2018
<0.5
201
0.13
NA
105
<0.2
162
1.1 S3
0.052
2.1
897
0.12
70
<10
NA
NA
NA
NA
NA
NA
5.1
0.63
<0.05
AB-03SL
Ash Pore Water
1O/31/2018
0.22 j,SI
25.3 j
<0.1
NA
46.9
<0.2
161
0.86
0.028 j
1.3
796
0.045 j
61.6
<10
NA
NA
NA
NA
NA
NA
4.5 j
0.68
0.034 j
AB-03SLA
Ash Pore Water
01/29/2018
0.66
242
0.13
NA
<5
<0.2
167
IASI
0.11
2.4
872
<0.1
78
<10
0.135
0.582
0.717
<0.0005
<0.0005
NA
<5
0.65
<0.05 M1
AB-03SLA
Ash Pore Water
04/27/2018
<0.5
<50
<0.1
NA
<5
<0.2
156
0.54
<0.05
1.7
845
0.039 j
68.3
<10
0.422 U
0.14 U
0.562 U
0.0001 j
0.0001 j
0.000087 j
<5
0.63
0.048 j
AB-03SLA
Ash Pore Water
07/31/2018
0.14 j,SI
<50
0.082 j
NA
<5
<0.2
152
0.75
<0.05
1.1
788
<0.1
57.5
<10 P8
0.183 U
0.035 U
0.218 U
0.00021 j
0.00021 j
0.0001 j
5.9
0.73
0.061
AB-03SLA
Ash Pore Water
1O/23/2018
<0.5
<50
<0.1
NA
<5
<0.2
150
0.71
0.033j
0.88
802
<0.1
48
<10
0.602 U
-0.0984 U
0.602 U
NA
0.00014j
NA
9.7
0.69
0.031j
AB-04BR
Bedrock
01/26/2018
<0.5
11700
<0.1
NA
158
<0.2
<0.5
1.1 S1
<0.05
<0.5
105
<0.1
<0.3
<10
0.773
1.72 B
2.493
<0.0005
<0.0005
NA
<5
<0.1
0.053
AB-04BR
Bedrock
04/30/2018
0.25 j,SI
10900
<0.1
NA
154
<0.2
<0.5
0.18 j,SI
<0.05
<0.5
102
<0.1
0.061 j,SI
3.2j
0.74
0.835 U
1.58
<0.0005
<0.0005
<0.0005
<5
0.071j
0.044j
AB-04BR
Bedrock
07/30/2018
0.23 j,B,SI
11400
<0.1
NA
154
<0.2
<0.5
0.12 j,SI
0.039 j
<0.5
99.3
<0.1
0.089 j,SI
<10
NA
NA
NA
NA
NA
NA
<5
0.068 j
0.056 M1
AB-04BR
Bedrock
1O/22/2018
0.21 j,SI
1O100
<0.1
NA
143
<0.2
<0.5
0.46 j
0.047 j
<0.5
97.6
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
0.065 j
0.063
AB-04D
Deep
O1/26/2018
4.9
<50
0.12
NA
147
1.3 M1,S1
<0.5
2
<0.05
<0.5
7.6
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1 MI
<0.05
AB-04D
Deep
04/30/2018
1.8 51
<50
0.064 j
NA
166
0.13 j
<0.5
1.3 SI
<0.05
<0.5
8.6
0.062 j
<0.3
3.9 j
NA
NA
NA
<0.0005
<0.0005
<0.0005
<5
<0.1
<0.05
Page 3 of 45

TABLE 3-3
2018 COMPREHENSIVE GROUNDWATER QUALITY DATA
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS LLC, MOORESBORO NC
Analytical Parameters
FIELD PARAMETERS
WATER QUALITY PARAMETERS
SELECTED 40CFR257 APPENDIX III CONSTITUENTS plus Sr
INORGANIC PARAMETERS (TOTAL CONCENTRATION)
pH
Water
Level
Temp
Spec
Cond
DO
ORP
Eh
Turbidity
Alkalinity
Bi-
carbonate
Alkalinity
Sulfide
Total
Organic
Carbon
Total
Suspended
Solids
Boron
Calcium
Chloride
Strontium
Sulfate
Total
Dissolved
Solids
Aluminum
Antimony
Arsenic
Barium
Beryllium
Cadmium
Chromium
(VI)
Chromium
Reporting Units
S.U.
ft
Deg C
umhos/cm
mg/L
mV
mV
NTUs
mg/L
mg/L
mg/L
mg/L
mg/L
ug/L
mg/L
mg/L
ug/L
mg/L
mg/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
15A NCAC 02L Standard
6.5-8.5
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
700
NE
250
NE
250
Soo
NE
1*
SO
700
4*
2
SO
10
Background Threshold Values (Shallow Flow Zone)
4.4-6.1
NE
NE
NE
NE
NE
NE
NE
13.67
14.42
0.1
1
NE
50
3.221
7.7
36.71
1.169
75.47
253
1
0.5
73.03
0.188
1
0.452
3.968
Background Threshold Values (Deep Flow Zone)
4.8-6.1
NE
NE
NE
NE
NE
NE
NE
19.74
18.13
0.1
1
NE
50
11
5.1
56.14
10
70.98
290
1
0.763
23
0.2
1
0.16
1.791
Background Threshold Values (Bedrock Flow Zone)
5.4-7.4
NE
NE
NE
NE
NE
NE
NE
53
68.82
0.1
1
NE
50
16
8.656
107.1.
15.1
1.20
208.2
1
1
19.33
1
1
0.12
3.567
Sample ID
Sample Location
Aquifer Name
Sample
Collection Date
Analytical Results
AB-04D
Deep
07/30/2018
4.3
8.70
23
34
0.30
558
763
2.0
<5
<5
<0.1
<1
<2.5
<50
0.616 SI
4
8.4
0.89j
26
112 SI
<0.5
0.23 Sl
17.2
0.099j
<0.08
0.061 SI
0.22j
AB-04D
Deep
10/22/2018
3.4
8.81
21
33
0.20
642
847
0.0
4 j
4 j
<0.1
<1
<2.5
26.4 j
0.61
4
7.9
<1
<25
67.2 j
<0.5
0.064 j
17
0.084 j
<0.08
0.068
0.18 j,S1
AB-04LA15
Ash Pore Water
08/07/2018
6.1
9.30
21
214
0.10
-62
143
2.8
76.3
76.3
<0.1
<1
7.6 D6
963
27.3
7
836
15.5
138
278
0.34j
374
336
0.097j
<0.08
0.13
0.31j
AB-04LA15
Ash Pore Water
10/22/2018
5.4
9.76
22
78
0.20
108
313
3.1
25
25
<0.1
<1
3.7
449
5.1
7.5
178
0.66j
51
281
0.16j
88.7
192
0.26
0.098
<0.025
0.71 S1
AB-04S
Ash Pore Water
01/26/2018
9.8
9.11
17
548
0.10
-44
161
0.0
25
15.6
<0.1
<1
<2.5
2180
80.2
82.5
1650
123
553
384
2.3
121
216
<0.1
<0.08
<0.025
<0.5
AB-04S
Ash Pore Water
04/30/2018
9.7
9.04
18
641
0.40
4
209
0.1
27
12.3
<0.1
<1
<2.5
2600
95.1
107
2070
114
410
643
2.1
74.9
192
<0.1
<0.08
<0.025
<0.5
AB-04S
Ash Pore Water
07/30/2018
8.9
9.20
27
673
0.10
166
371
0.7
32.5
21.9
<0.1
<1
<5
2500
91.7
90.7
2170
124
469
627
1.6
111
224
<0.1
<0.08
<0.025
<0.5
AB-04S
Ash Pore Water
12/19/2018
9.4
8.80
19
722
0.20
99
304
<1
29
17.2
<0.1
<1
<2.5
2750 M1
98.6 M1
102
2300
138
443
692
2.7
92.7
204
<0.1
<0.08
<0.025
<0.5
AB-04SL
Ash Pore Water
01/26/2018
8.9
8.90
15
300
0.50
153
358
8.9
151
147
<0.1
<1
5.6
946
37.2
3.9
1900
12.1
173
1120
2.8
2360
161
<0.1
<0.08
0.17 S1
1.4 S1
AB-04SL
Ash Pore Water
04/30/2018
9.3
8.85
18
271
0.10
14
219
5.3
98.2
84.7
<0.1
0.62 j
<2.5
1780
37.2
4.2
1510
42.4
152
1860
4.5
1310
95.6
<0.1
<0.08
<0.025 M1,R1
0.16 j,Sl
AB-04SL
Ash Pore Water
07/30/2018
9.0
8.96
26
263
0.20
-67
139
1.0
112
103
<0.1
0.5j
<2.5
1720
37.7
4.3
1640
36.3
173
1750
4.9
1780
96.3
<0.1
<0.08
0.034 SI
0.27j
AB-04SL
Ash Pore Water
11/01/2018
9.0
9.06
21
270
0.06
-146
60
9.9
114
91
<0.1
0.7j
14.2
1880
38.3
4.5
1580
40.2
174
2070
4.6
1380 M6
96.8
0.066j
0.065j
<0.025
0.82 B,BC,S1
AB-04UA15
Ash Pore Water
08/07/2018
10.4
10.09
21
651
0.10
7
212
0.3
59.6
19.6
<0.1
<1
<2.5
2840
98.9
76.9
2350
136
417
1720
1.7
83.4
224
<0.1
<0.08
<0.025
1.9
AB-04UA15
Ash Pore Water
11/01/2018
10.6
10.43
22
622
0.10
15
220
0.3
68.7
<5
<0.1
0.75j
<2.5
2900
86.5
62.3
2290
114
400 D6
2380
2.7
68.9
199
<0.1
<0.08
<0.025
0.51 B,BC,S1
AB-05BR
Bedrock
01/31/2018
5.6
9.07
13
51
0.50
145
350
0.0
9.7
9.7
<0.1
<1
<2.5
<50
2.82
3.1
25.1
8.4
39
<100
<0.5
<0.1
8.2
<0.1
<0.08
0.043 S1
1.1 S1
AB-05BR
Bedrock
05/01/2018
5.6
8.93
21
52
0.48
123
328
2.8
8.2
8.2
<0.1
<1
<2.5
<50
2.9
2.9
21.7
6
43
<100
<0.5
<0.1
7.4
0.067 j
<0.08
<0.025
0.13 j
AB-05BR
Bedrock
07/30/2018
5.5
9.20
25
56
0.80
117
322
1.1
8.5
8.5
<0.1
<1
<2.5
<50
2.69
3.1
23.7
5.4
52
<100
<0.5
0.12 S1
8.1
0.056 j
0.029 j
<0.025
0.2 j
AB-05BR
Bedrock
10/22/2018
5.1
9.32
19
51
0.70
104
309
1.2
9
9
<0.1
<1
<2.5
<50
2.3
3.1
22.5
5.4
61
<100
<0.5
0.11 S1
7.1
0.068 j
<0.08
<0.025
0.2 j,S1
AB-05BRU
Deep
01/31/2018
5.7
7.55
13
53
0.90
174
379
0.0
9.7
9.7
<0.1
<1
<2.5
<50
2.48
3.7
43.3
6.2
31 D6
<100
<0.5
0.46
24.4
<0.1
<0.08
0.04 S1
<0.5
AB-05BRU
Deep
05/01/2018
5.6
7.29
25
56
0.99
171
376
2.9
8.7
8.7
<0.1
<1
<2.5
<50
2.46
3.4
34.6
4.7
46
<100
0.14 j
0.44
20.9
0.079 j
<0.08
0.038 M1,S1
<0.5
AB-05BRU
Deep
07/30/2018
5.3
7.60
25
55
0.80
-121
84
2.5
9.8
9.8
<0.1
<1
<2.5
<50
2.4
3.5
39.8
4.9
55
<100
0.093 j
0.46 Sl
23.5
0.059 j
<0.08
<0.025
<0.5
AB-05BRU
Deep
10/22/2018
5.1
7.67
22
65
1.10
117
322
0.7
10
10
<0.1
<1
<5
<50
2
3.6 M1
34.8
4.7 M1
47
<100
<0.5
0.4
20.8
0.087j
<0.08
<0.025
0.16 j,S1
AB-05S
Ash Pore Water
01/31/2018
8.1
7.97
19
624
0.10
-226
-21
9.7
243
243
<0.1
<1
14.1
4990
90.4
15
3500
96.2
416
235
0.74
1590
302
<0.1
<0.08
<0.025
<0.5
AB-05S
Ash Pore Water
05/01/2018
7.9
8.00
22
707
0.11
-213
-8
9.5
296
296
<0.1
1.2
7
4550 M1
110
5.7
2960 M1
108
479
125
0.66
1730
189
<0.1
<0.08
<0.025
0.33j
AB-05S
Ash Pore Water
07/30/2018
7.9
8.22
23
636
0.30
-226
-21
8.2
263
263
<0.1
0.81j
8.1
5580
95
5.1
3770
79.2
426
169 SI
0.62
1790
273
<0.1
0.038j
<0.025
0.46j
AB-05S
Ash Pore Water
10/22/2018
7.8
8.31
20
608
0.20
-131
74
1.3
265
265
<0.1
1 R1
3.8
5440
87.4
4.7
3730
76.4
393
93.8j
0.52
1780
237
0.012j
0.12
<0.025
0.12 j,S1
AB-06BR
Bedrock
01/29/2018
6.5
11.70
16
108
0.60
-18
187
8.3
43.5
43.5
<0.1
<1
3.2
<50
10.3
3.2
101
4.5
84
<100
<0.5
<0.1
6.8
<0.1
<0.08
<0.025
<0.5
AB-06BR
Bedrock
04/30/2018
6.4
10.80
21
110
0.20
-14
191
5.9
40.4
40.4
<0.1 M1
<1
<5
<50
10.6
3.4
100
5.2 M1
92
<100
<0.5
0.11 SI
7.1
<0.1
<0.08
0.031 SI
0.24 j,S1
AB-06BR
Bedrock
07/30/2018
6.3
11.67
26
112
0.20
-8
197
7.6
43.1
43.1
<0.1
<1
3.7
<50
10.3
3.4
SOS
5
93
<100
<0.5
0.063 j,S1
7.4
<0.1
<0.08
<0.025
<0.5
AB-06BR
Bedrock
10/22/2018
6.0
11.74
19
110
0.40
-21
184
3.3
38
38
<0.1
<1
2.6
<50
9.9
3.3
102
5
90
<100
<0.5
<0.1
6.6
0.054 j
<0.08
<0.025
0.15 j,S1
AB-06D
Deep
01/29/2018
5.5
5.62
16
49
3.50
130
335
2.7
7.9
7.9
<0.1
<1
<2.5
<50
2.18
3.6
28.2
<1
33
<100
<0.5
<0.1
25
<0.1
<0.08
<0.025
<0.5
AB-06D
Deep
04/30/2018
5.0
5.41
19
52
2.80
56
261
1.9
8.7
8.7
<0.1 M1
<1
<5
<50
2.35
3.8 MI
28.5
0.55 j,M1
34
<100
<0.5
<0.1
24.2
<0.1
<0.08
<0.025
0.2 j,S1
AB-06D
Deep
08/03/2018
5.2
5.49
21
48
3.20
250
455
0.4
7.8
7.8
<0.1
<1
<2.5
<50
2.3
3.6
31.3
0.55 j
41
<100
<0.5
<0.1
27.2
0.048 j
<0.08
0.034
<0.5
AB-06D
Deep
10/22/2018
5.0
6.02
20
48
2.80
93
298
0.8
8
8
<0.1
<1
<2.5
<50
2.1
3.6
29.5
0.57 j
29
<100
<0.5
0.089 j
24.1
0.033 j
<0.08
<0.025
0.1 j,S1
AB-06S
Ash Pore Water
01/29/2018
8.6
5.92
18
598
0.20
-231
-26
2.4
57.4
57.4
0.78
<1
<2.5
5710
90.7
65.8
1860
134
398
220
<0.5
292
220
<0.1
<0.08
<0.025
<0.5
AB-06S
Ash Pore Water
04/30/2018
8.5
6.04
19
543
0.30
-225
-20
1.9
169
169
0.34
0.97j
<2.5
8550
88
20.8
2430
106
375
245
0.3j
282
187
<0.1
<0.08
0.19 S1
0.36 j,S1
AB-06S
Ash Pore Water
07/30/2018
8.4
6.28
23
541
0.10
-150
55
2.4
123
115
0.2
0.81j
<2.5
9900
84
16.1
2560
121
398
242 SI
0.57
347
176
<0.1
0.042j
<0.025
0.18j
AB-06S
Ash Pore Water
10/22/2018
8.5
6.35
20
579
0.20
-238
-33
2.8
154
144
0.37
1.1
<2.5
10300
78.8
10.5
2890
116
363
275
0.69
352
168
0.012j
<0.08
<0.025
0.51 SI
ADS-01
Shallow
12/18/2018
5.2
10.85
15
31
5.30
168
373
9.5
2.8 j
2.8 j
<0.1
0.71 j
8.2
39.4 j
0.208
3.3
4.1 j
2.2
31
408
<0.5
0.055 j
20.7
0.12
<0.08
0.24 SI
0.33 j,B,SI
AD2-01
Shallow
12/18/2018
5.1
17.27
14
72
6.00
144
349
7.5
1.4 j
1.4 j
<0.1
<1
7.4
30 j
4.92
3.1
48.4
22.1
47
292
<0.5
0.11
49
0.42
0.062 j
0.078 Sl
0.35 j,B,SI
AD2-02
Shallow
12/18/2018
5.3
14.32
14
53
5.80
158
363
8.6
5.2
5.2
<0.1
<1
6.6 D6
<50
2.6
2.6
45.7
14.2
58
384
<0.5
0.16
34.1
0.24
0.053 j
1.8 S1
1.8 B,S1
AD2-03
Shallow
12/18/2018
5.5
11.06
14
26
6.80
176
381
9.7
5.9
5.9
<0.1
<1
18.2
<50
0.598
2.7
7.8
<1
31
603
<0.5
0.11
15.1
0.13
<0.08
0.053 Sl
0.94 B,S1
AD2-04
Shallow
12/18/2018
5.6
22.59
15
44
5.00
181
386
1.7
7.3
7.3
<0.1
<1
<2.5
<50
2.67
1.9
16.1
7
45
<100
<0.5
0.085 j
22.5
0.099 j
<0.08
0.21 S1
0.37 j,B,SI
AD3-01
Shallow
12/18/2018
5.2
13.27
14
33
5.30
131
336
5.2
6.4
6.4
<0.1
<1
<2.5
<50
0.994
2
8.2
2.8
<25
192
0.2 j
<0.1
46.8
0.14
<0.08
1.6S1
4.2 Sl
AD3-02
Shallow
12/18/2018
5.7
10.15
15
70
5.20
153
358
7.6
13.1
13.1
<0.1
<1
4.1
37.7 j
2.24
2.2
16
13.2
48
194
<0.5
0.078 j
15.5
0.063 j
<0.08
0.11 S1
0.68 B,SI
AS-011)
Deep
01/31/2018
5.5
81.07
17
247
0.10
252
457
9.7
<5
<5
<0.1
<1
14.7
660
16.9
32.8
172
56.5
158
617
<0.5
0.8
158
0.22
0.14
0.44
3.6
AS-011)
Deep
04/30/2018
5.4
80.48
20
256
0.20
-21
185
4.0
3.1j
3.1j
<0.1
<1
<2.5
654
18.4
37.3
182
59
165
74.7j
<0.5
0.11 SI
128
0.19
0.15
0.38 M1,S1
1.3 S1
AS-011)
Deep
07/31/2018
5.4
80.40
21
267
0.50
168
373
8.5
2.9j
2.9j
<0.1
<1
5.3
674
17.7
38.1
191
53.3
178
464
<0.5
0.081 j,S1
181
0.17
0.13
0.42 S1
1.6 S1
AS-011)
Deep
10/24/2018
5.6
80.73
16
259
0.60
122
327
5.8
3.4j
3.4j
<0.1
<1
6.9
692
18.2
37.2
195
49.1
167
243
<0.5
0.1
158
0.21
0.16
0.4
3.5
AS-01SB
Shallow
01/31/2018
4.4
79.61
19
759
0.30
327
532
6.9
<5
<5
<0.1
<1
5.3
1820
105
54.2
114
284
578
2490
<0.5
9
<50 D3
4.2
0.15
0.19 SI
5.3
AS-01SB
Shallow
04/30/2018
4.3
79.03
20
791
1 0.30
1 -93
1 112
9.1
1 <5
1 <5
1 <0.1
I <1
17.3
1580
102
60.1
108
309
546
2180
0.18j
6.7
26.6
3.8
0.12
0.16 S1
8.1
AS-01SB
Shallow
07/31/2018
4.3
79.00
23
763
1 0.40
1 379
584
8.1
1 <5
1 <5
1 <0.1
I <1
23.2
1560 D3
85.2 D3
59.7
114 D3
249
562
2210 D3
<0.5
5.9 S1
23.7 j,D3
3.9
0.12
0.15 S1
0.46 j,S1
AS-01SB
Shallow
10/24/2018
4.4
79.39
17
736
1 0.30
1 422
16271
7.7
1 <5
1 <5
1 <0.1
I <1
12.7
1400
75.4
57.7
SOS
262
509
1620
<0.5
5.1
20.5
3.6
2.2
0.15
0.58
Page 4 of 45

TABLE 3-3
2018 COMPREHENSIVE GROUNDWATER QUALITY DATA
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS LLC, MOORESBORO NC
Analytical Parameters
INORGANIC PARAMETERS (TOTAL CONCENTRATION)
INORGANIC PARAMETERS (DISSOLVED CONCENTRATION WITH FILTER SIZE)
Cobalt
Copper
Iron
Lead
Lithium
Magnesium
Manganese
Mercury
Molybdenum
Nickel
Nitrate
+ Nitrite
Potassium
Selenium
Sodium
Thallium
Vanadium
Zinc
Aluminum
Antimony
Arsenic
Barium
Beryllium
Boron
Cadmium
Chromium
Cobalt
Reporting Units
ug/L
ug/L
ug/L
ug/L
ug/L
mg/L
ug/L
ug/L
ug/L
ug/L
mg-N/L
mg/L
ug/L
mg/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
15A NCAC 02L Standard
1*
1000
300
15
NE
NE
50
1
NE
100
NE
NE
20
NE
0.2*
0.3*
1000
NE
NE
NE
NE
NE
NE
NE
NE
NE
Background Threshold Values (Shallow Flow Zone)
10.65
6.569
765.3
1
NE
2.479
168.8
0.2
1
6.256
8.837
5
1
6.139
0.117
1.059
15
NE
NE
NE
NE
NE
NE
NE
NE
NE
Background Threshold Values (Deep Flow Zone)
9.041
9.453
559.7
1
NE
1.6
78.31
0.2
1
12.56
2.8
5
1
4.41
0.063
1.095
15.03
NE
NE
NE
NE
NE
NE
NE
NE
NE
Background Threshold Values (Bedrock Flow Zone)
1.497
5
6220
1
NE
1 2.328
89.4
0.2
1.716
5
0.92
5
1
1 7.42
0.1
0.37
10
NE
NE
NE
NE
NE
NE
NE
NE
NE
Sample ID
Sample Location
Aquifer Name
Sample
Collection Date
Analytical Results
AB-04D
Deep
07/30/2018
5.2
1.2 S1
39.9 j,RO
0.079 j
1.7
0.894
173 S3
0.96
<0.5
1
0.23
<5
<0.5
2.38 j
0.065 j
0.073 j,S1
8.1 j,B
51.2 j
<0.5
<0.1
16.9
0.082 j
<50
<0.08
0.2 j,S1
5.2
AB-04D
Deep
10/22/2018
5.1
0.89 Sl
<50
<0.1
1.7 j
0.9
ISO
1.4
<0.5
0.9
0.22
<5
<0.5
2.3 j
0.068 j
0.083 j
5.8 j,B
62.8 j
<0.5
0.068 j,B,SI
15.2
0.077 j
<50
<0.08
0.13 j
4.9
AB-04LAIS
Ash Pore Water
08/07/2018
3.4
0.59
6990
0.1
33
3.57
817
<0.2
20.4
1.9
0.016 j
2.81 j
0.2 j
4.93 j
0.19
1.2
5.1 j
<100
0.39 j
434
305
0.087 j
979
<0.08
0.18 j
3.8
AB-04LA15
Ash Pore Water
10/22/2018
6.1
1.3S1
2600
0.17
4.3
1.6
591
<0.2
0.99
2.5
0.015 j
<5
<0.5
3.2 j
0.33
1.8
6.2 j,B
97.7 j
0.11 j
107
180
0.24
429
0.09
0.32 j
5.9
AB-04S
Ash Pore Water
01/26/2018
<0.1
<0.5
<50
0.3
120
5.24
<5
<0.2
197
<0.5
<0.02
9.5
0.57
12.5
<0.1
48.6
<10
366
2.3
112
193
<0.1
1940
<0.08
<0.5
<0.1
AB-04S
Ash Pore Water
04/30/2018
<0.1
<0.5
<50
0.077 j,S1
103
4.14
<5
<0.2
157
0.26 j
<0.02
10.4
0.59
13.5
0.034 j
53.6
<10
598
2.2
80
180
<0.1
2440
<0.08
<0.5
<0.1
AB-04S
Ash Pore Water
07/30/2018
<0.1
<0.5
<50
<0.1
116
5.66
<5
<0.2
140
0.5 j
<0.02
10.6
0.48 j
13.4
0.052 j
25.9
<10
523
1.6
105
185
<0.1
2080 Ml
<0.08
<0.5
<0.1
AB-04S
Ash Pore Water
12/19/2018
<0.1
<0.5
<50
<0.1
128
5.42
2.7 j
<0.2
168
<0.5
<0.02
11.5
0.51
14.6
0.063 j
38.4
<10
669
2.5
89.3
201
<0.1
2610
<0.08
0.84
0.074 j
AB-04SL
Ash Pore Water
01/26/2018
0.15
0.85 Sl
174
0.29
56.1
10.9
11.1
<0.2
54.5
0.68 Sl
<0.02
6.48
0.54
<5
0.1
21.7
<10
981
3.4
1860
126
<0.1
1090
<0.08
<0.5
<0.1
AB-04SL
Ash Pore Water
04/30/2018
0.042 j
0.3 j,S1
108
OA Sl
60.1
6.03
8
<0.2
83.1
0.43 j
<0.02
8.56
0.48 j
2.93 j
0.055 j
63.8
<10
1460
4.4
1370
93.4
<0.1
1630
<0.08
0.14 j,S1
<0.1
AB-04SL
Ash Pore Water
07/30/2018
0.03 j
0.18 j,S1
37.9 j,RO
<0.1
62.7
6.16
8.6 SI
<0.2
78.4
0.51
<0.02
8.11
0.32 j
2.74 j
0.04 j
59.6
<10
1530
4.4
1430
88
<0.1
1800
<0.08
0.16 j,S1
<0.1
AB-04SL
Ash Pore Water
11/01/2018
0.19
0.85 B
132
0.31
66.2
5.5
8.7
<0.2
80.2
1.2
0.025 B
8.3
0.52
2.7 j
0.054 j
60.5
3.5 j
1860
4.5
1150
87.1
0.025 j
2090
<0.08
0.3 j.S1
0.054 j
AB-04UA15
Ash Pore Water
08/07/2018
<0.1
0.65
<50
0.12
110
4.13
<5
<0.2
99.6
0.96
<0.02
12.5
0.92
12.4
<0.1
42.6
<10
1590
2.2
106
200
<0.1
2710
<0.08
<0.5
<0.1
AB-04UA15
Ash Pore Water
11/01/2018
0.026 j
0.26 j,B
<50
<0.1
147
1.2
<5
<0.2
157
0.91
0.024
12.6
0.98
9.9
<0.1
55.7
<10
2410
2.6
67.3
205
<0.1
3030
<0.08
0.71 S1
0.038 j
AB-05BR
Bedrock
01/31/2018
2.6
0.73 Sl
54.6
<0.1
1.7
1.35
141
<0.2
<0.5
12.2
0.27 Sl
<5
<0.5
<5
<0.1
<0.3
<10
<100
<0.5
<0.1
8.2
<0.1
<50
<0.08
<0.5
2.7
AB-05BR
Bedrock
05/01/2018
1.9
0.35 j,S1
32.1 j,S1
0.037 j,S1
1.6
1.43
112
<0.2
<0.5
4.9
0.52 Sl
<5
<0.5
3.64 j
0.047 j
<0.3
<10
<100
<0.5
<0.1
7.3
0.043 j
<50
<0.08
<0.5
2.3
AB-05BR
Bedrock
07/30/2018
1.5
1.3 S1
48.6 j,RO
0.11
1.6
1.38
112 SS
<0.2
0.067 j,S1
3.3
0.6
<5
<0.5
3.65 j
0.053 j
<0.3
3.2 j
<100
<0.5
0.18 S1
7.3
0.043 j
<50
<0.08
<0.5
1.5
AB-05BR
Bedrock
10/22/2018
1.2
0.32 j,S1
26.4 j
<0.1
1.3 j
1.3
95.7
<0.2
<0.5
2.7
0.75 M1
<5
<0.5
3.3 j
0.045 j
<0.3
3.1 j,B
<100
<0.5
<0.1
6.9
0.066 j
<50
<0.08
0.094 j
1.6
AB-05BRU
Deep
01/31/2018
4.1
2.4 S1
141
<0.1
2.4
1.22
226
<0.2
<0.5
9.3
0.69
<5
<0.5
<5
0.14
0.36
<10
<100
<0.5
0.64
21.6
<0.1
<50
<0.08
<0.5
4.7
AB-05BRU
Deep
05/01/2018
3.8
2.3 S1
78.3
0.047 j,S1
2.4
1.32
174
<0.2
0.19 j
8.2
0.8
<5
<0.5
4.61 j
0.14
0.29 j,S1
4.2 j
<100
<0.5
0.4
20.3
0.11
<50
0.03 j
0.15 j
5
AB-05BRU
Deep
07/30/2018
3
2
124 RO
0.056 j
2.3
1.33
145 SI
<0.2
0.22 j,S1
3.4
0.75
<5
0.18 j
4.5 j
0.14
0.37 S3
4 j
<100
<0.5
0.3 S1
21.3
<0.1
<50
<0.08
<0.5
4.5
AB-05BRU
Deep
10/22/2018
4
1.8
126
<0.1
1.9 j
1.2
188
<0.2
0.13 j
3.1
0.95
<5
<0.5
4.2 j
0.13
0.32
6.3 j,B
<100
<0.5
0.27S1
20
0.094 j
<50
0.052 j
0.18 j
4.4
AB-05S
Ash Pore Water
01/31/2018
0.14
<0.5
2150
<0.1
96.8
19.6
282
<0.2
1930
2
<0.02
<5
<0.5
<5
<0.1
1.4
<10
<100
0.62
1640
248
<0.1
4230
<0.08
<0.5
0.12
AB-05S
Ash Pore Water
05/01/2018
0.23
<0.5
1590
<0.1
87.6
24.3
235
<0.2
1790
2.6
<0.02
3.87 j
<0.5
5.44
0.064 j
2
<10
<100
0.54
1680
195
<0.1
4950
0.091
<0.5
0.22
AB-05S
Ash Pore Water
07/30/2018
0.13
0.18 j,S1
1600 RO
0.085 j
98.8
23.6
188 s1
<0.2
2050
2.3
0.022
2.77 j
0.19 j
2.74 j
0.031 j
1.8
<10
63.7 j
0.54
1700
242
<0.1
5420
<0.4 D3
<0.5
0.11
AB-05S
Ash Pore Water
10/22/2018
0.12
0.39 j,S1
1040
<0.1
86.5
22.5
174
<0.2
1900
2.6
<0.02
<5
<0.5
2.6 j
0.037 j
1.3
<10
81.8 j
0.49 j
1650
223
<0.1
5030
0.12
0.57
0.12
AB-06BR
Bedrock
01/29/2018
<0.1
<0.5
4110
<0.1
9.8
2.1
59.1
<0.2
<0.5
<0.5
<0.02
<5
<0.5
<5
<0.1
<0.3
<10
<100
<0.5
<0.1
6
<0.1
<50
<0.08
<0.5
<0.1
AB-06BR
Bedrock
04/30/2018
<0.1
0.24 j,S1
4710
<0.1
8.9
2.03
74
<0.2
<0.5
<0.5
<0.02
2.79 j
<0.5
5.09
<0.1
<0.3
<10
<100
<0.5
<0.1
6.2
<0.1
<50
<0.08
<0.5
<0.1
AB-06BR
Bedrock
07/30/2018
<0.1
<0.5
5110 RO
<0.1
9
1.96
84.8 SI
<0.2
<0.5
<0.5
0.015 j
2.64 j
<0.5
4.84 j
<0.1
<0.3
<10
<100
<0.5
<0.1
6.7
<0.1
<50
<0.08
<0.5
<0.1
AB-06BR
Bedrock
10/22/2018
0.013 j
<0.5
3430
<0.1
8.5
2
64.4
<0.2
<0.5
<0.5
<0.02
<5
<0.5
4.7 j
<0.1
<0.3
<10
<100
<0.5
<0.1
5.9
0.037 j
<50
<0.08
0.18 j
0.019 j
AB-06D
Deep
01/29/2018
0.75
IA SI
<50
<0.1
1.6
1.06
39
<0.2
<0.5
0.65
1.4
<5
<0.5
<5
<0.1
<0.3
<10
<100
<0.5
<0.1
23.4
<0.1
<50
<0.08
<0.5
0.76
AB-06D
Deep
04/30/2018
0.47
0.64 B,S1
35.4 j
0.037 j,B,SI
1.5
1.07
37.9
<0.2
<0.5
0.45 j
1.4
<5
<0.5
3.96 j
0.052 j
0.13 j,S1
<10
<100
<0.5
<0.1
22.4
<0.1
<50
<0.08
<0.5
0.62
AB-06D
Deep
08/03/2018
0.55
1.5
<50
<0.1
1.6
1.1
41.6
<0.2
<0.5
0.56 B
1.4
<5
<0.5
3.9 j
0.065 j
<0.3
2.9 j
<100
<0.5
<0.1
21.7
0.066 j
<50
<0.08
<0.5
0.54
AB-06D
Deep
10/22/2018
0.55
0.75 S1
<50
<0.1
1.5 j
0.96
37.3
<0.2
<0.5
0.64
1.3
<5
<0.5
3.5 j
0.065 j
<0.3
4 j,B
<100
<0.5
0.098 j,B,51
21.3
0.033 j
<50
<0.08
0.23 j
0.66 Ml
AB-06S
Ash Pore Water
01/29/2018
<0.1
<0.5
209
<0.1
64.8
6.71
60.9
<0.2
260
0.61
0.039 SI
7.04
1.1
9.16
<0.1
8.1
<10
135
<0.5
297
210
<0.1
5360
<0.08
0.81
<0.1
AB-06S
Ash Pore Water
04/30/2018
0.022 j
<0.5
195
<0.1
98.2
14.3
47
<0.2
250
0.88
<0.02
6.69
0.57
6.35
<0.1
8.7
<10
162
0.21 j
335
178
<0.1
7650
<0.08
0.57 S1
0.02 j
AB-06S
Ash Pore Water
07/30/2018
0.021 j
<0.5
171 RO
<0.1
117
9.49
40.7 S1
<0.2
372
0.97
<0.02
7.35
0.55
6.03
0.039 j
9.5
<10
207
0.19 j
351
178
<0.1
9880
<0.08
<0.5
<0.1
AB-06S
Ash Pore Water
10/22/2018
0.041 j
0.42 j,S1
152
<0.1
130
14.3
41.6
<0.2
312
1.3
<0.02
7.4
0.95
5.4
0.064 j
11.5
<10
238
0.56
325
154
<0.1
9020
0.081
0.12 j
0.031 j
ADI-01
Shallow
12/18/2018
1.3
0.17 j,S1
157
0.34
1.8 j
0.142
36.5
<0.2
<0.5
0.46 j
<0.02
3.47 j
0.63
2.62 j
0.25
0.14 j,S1
4.5 j
<100
<0.5
<0.1
19.1
0.092 j
33.5 j
<0.08
0.12 j
1.1
AD2-01
Shallow
12/18/2018
1.6
0.22 j,S1
106
0.32
3.3
1.63
66.4
<0.2
<0.5
0.78
<0.02
4.73 j
3.3
1.67 j
0.22
0.18 j,S1
13.1
80.6 j
<0.5
0.088 j
43
0.41
26.8 j
0.064 j
0.3 j
1.6
AD2-02
Shallow
12/18/2018
0.22
0.38 j,S1
319
0.2
1.4 j
1.15
158
<0.2
<0.5
0.51
0.035 SI
<5
1.1
3.46 j
0.056 j
0.47S1
3.8 j
106
<0.5
0.1
30
0.23
<50
<0.08
1.3
0.097 j,BC
AD2-03
Shallow
12/18/2018
0.21
0.32 j,S1
558
0.49
1.6 j
0.506
15.9
<0.2
<0.5
0.45 j
0.043 Sl
<5
<0.5
2.84 j
0.048 j
1
6 j
<100
<0.5
<0.1
8.8
0.083 j
<50
<0.08
0.53
0.023 j,BC
AD2-04
Shallow
12/18/2018
0.036 j,S1
0.36 j,S1
57.6
<0.1
3
0.899
8.4
<0.2
<0.5
<0.5
0.016 j,S1
2.88 j
1.1
2.17 j
0.11
0.21 j,S1
5 j
<100
<0.5
0.071 j
22.6
0.078 j
<50
<0.08
0.43 j,S1
0.029 j
AD3-01
Shallow
12/18/2018
0.81
0.27 j,S1
162
0.097 j
1.5 j
1.38
25.1
<0.2
<0.5
2.1
0.039 Sl
<5
0.71
1.56 j
0.042 j
0.34 S3
2.9 j
<100
<0.5
<0.1
45.2
0.16
<50
<0.08
2 S1
0.91
AD3-02
Shallow
12/18/2018
1.7
0.62 SI
327
0.18
0.64 j
1.01
24.2
<0.2
<0.5
1.5
0.3
<5
0.55
8.44
0.027 j
0.45S1
30.5
<100
<0.5
0.05 j
13.5
0.052 j
32.6 j
<0.08
0.38 j
1.7
AS-011)
Deep
01/31/2018
0.8
4.5 S1
501
0.3 Sl
2.7
5.74
280
<0.2
<0.5
2.3
0.057
7.72
0.77
12.9
0.3
<0.3
<10
429
<0.5
1.1
256
0.26
582
0.16
5.5
0.81
AS-OSD
Deep
04/30/2018
0.38
1 B,S1
60.2
0.08 j,B,SI
2.5
6.07
273
0.09 j
<0.5
0.47 j
0.064
7.84
0.64
14.6
0.28
<0.3
3.53 ,S1
<100
<0.5
0.1
120
0.21
626
0.12
0.59 S1
0.38
AS-011)
Deep
07/31/2018
0.36
4.3
338
0.17
2.1
5.8
294
<0.2
0.97
1.5
0.069
7.79
0.63
13.2
0.27
<0.3
5.1 j
<100
<0.5
0.059 j,S1
132
0.19
638
0.14
0.88 B
0.32
AS-OSD
Deep
10/24/2018
0.4
5.1
187
0.19
2.5 j
6.1
306
<0.2
1.2
3.1
0.079 SI
7.8
0.64
13.2
0.29
0.32 BC
6.2 j
<100
<0.5
0.046 j
125
0.19
644
0.15
0.55 Sl
0.26
AS-01SB
Shallow
01/31/2018
15.7
0.97 S1
<500 D3
0.56
8.5
8.76
1090
<0.2
<0.5
5.5
0.05
<50
7.9
<50
0.61
<0.3
<100 D3
1710
<0.5
1.9
<25
4.3
1410
0.14
6.2
13.2
AS-01SB
Shallow
04/30/2018
15.5
3.5 Sl
200 j
0.56
8
8.56
913
<0.2
<0.5
7
0.066
<25 D3
7.3
11 j,D3
0.58
<0.3
41.6 j,D3,S1
1700
0.16 j
6.5
24.2 j,D3
3.8
1430
0.11
9.4
15.1
AS-01SB
Shallow
07/31/2018
14.9
0.9
377 D3
0.68
8.5
7.72 D3
874 D3
<0.2
0.15 j
3
0.073
<25 D3
6.9
9.48 j,D3
0.55
<0.3
41.4 j,D3
1120
<0.5
5.8S1
15.2
3.6
996
0.12
0.3 j,B
14.7
AS-01SB
Shallow
10/24/2018
14.1
1.1 S1
88.7 j
0.65
8.1
7.3
798
0.075 j
0.17 j
3.3
1 0.069 SI
5.2 j
5.4
8.5 j
0.59
0.075 j,BC
35.4
1370
<0.5
5.3
18.9
3.2
1300
2.4
2.3
13.6
Page 5 of 45

TABLE 3-3
2018 COMPREHENSIVE GROUNDWATER QUALITY DATA
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS LLC, MOORESBORO NC
Analytical Parameters
INORGANIC PARAMETERS (DISSOLVED CONCENTRATION WITH FILTER SIZE)
RADIONUCLIDES
OTHER PARAMETERS
Copper
Iron
Lead
Lithium
Manganese
Mercury
Molybdenum
Nickel
Phosphorus
Selenium
Strontium
Thallium
Vanadium
Zinc
Radium-226
Radium-228
Total
Radium
Uranium-238
Total Uranium
Uranium-238
(Dissolved)
Carbonate
Alkalinity
Fluoride
Phosphorus
Reporting Units
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
mg/L
ug/L
ug/L
ug/L
ug/L
ug/L
pCi/L
pCi/L
pCi/L
ug/mL
ug/mL
ug/mL
mg/L
mg/L
mg/L
15A NCAC 02L Standard
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
5^
NE
0.03^
NE
NE
2
NE
Background Threshold Values (Shallow Flow Zone)
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
2.58
NE
0.0005
NE
5
NE
NE
Background Threshold Values (Deep Flow Zone)
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
1.51
NE
0.0005
NE
5
NE
NE
Background Threshold Values (Bedrock Flow Zone)
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
3.1
NE
0.0005
NE
5
NE
NE
Sample ID
Sample Location
Aquifer Name
Sample
Collection Date
Analytical Results
AB-04D
Deep
07/30/2018
1.9 B,S1
<50
0.056 j,S1
NA
174
<0.2
<0.5
0.94 SI
<0.05
<0.5
7.9
0.073 j
0.067 j,S1
3.8 j
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
AB-04D
Deep
10/22/2018
2.2
<50
<0.1
NA
166
0.38
<0.5
1.1
<0.05
<0.5
7.3
0.061 j
0.087 j,BC,S1
7.8 j
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
AB-04LA15
Ash Pore Water
08/07/2018
0.2 j
6030
<0.1
NA
753
<0.2
28.8
2
0.21
0.24 j
746
0.21
1.1
2.7 j
NA
NA
NA
NA
NA
NA
<5
0.092 j
0.23
AB-04LA15
Ash Pore Water
10/22/2018
<0.5
2590
<0.1
NA
582
<0.2
0.99
2.5
0.034 j
<0.5
179
0.31
1.3 BC
5.1 j
NA
NA
NA
NA
NA
NA
<5
<0.1
0.081
AB-04S
Ash Pore Water
01/26/2018
0.52 SI
<50
<0.1
NA
<5
<0.2
192
0.53 SI
<0.05
0.63
1500
<0.1
53.1
<10
0.0681
0.316
0.3841
0.00063
0.00063
NA
9.4
0.11
<0.05
AB-04S
Ash Pore Water
04/30/2018
0.16 j,S1
<50
<0.1
NA
<5
<0.2
163
0.31 j,S1
<0.05
0.58
1940
0.032j
54.4
<10
0.267 U
0.931 U
1.2 U
0.00025j
0.00025j
0.00027j
14.7
0.099j
<0.05
AB-04S
Ash Pore Water
07/30/2018
0.17 j,S1
<50
<0.1
NA
<5
<0.2
138
0.29 j,S1
<0.05
0.4 j
1750 M1
0.045 j
23.4
<10
0.177 U
0.964 U
1.14 U
0.0014
0.0014
0.0013
10.6
0.076 j
<0.05
AB-04S
Ash Pore Water
12/19/2018
0.14 j
<50
<0.1
NA
2.7 j
<0.2
158
0.61
<0.05
0.45 j
2260
0.068 j
35.5
<10
-0.21 U
0.264 U
0.264 U
NA
0.00047 j
NA
11.8
0.095 j
0.029 j
AB-04SL
Ash Pore Water
01/26/2018
<0.5
<50
<0.1
NA
8.2
<0.2
55.7
<0.5
0.14
<0.5
1660
<0.1
36.6
<10
-0.058
0.154
0.096
0.02
0.02
NA
<5
1.1
0.18
AB-04SL
Ash Pore Water
04/30/2018
0.22 j,S1
<50
<0.1
NA
7.3
<0.2
78
0.52 SI
0.15
0.41 j
1490
0.049 j
55.8
<10
0 U
0.805 U
0.805 U
0.007
0.007
0.0076
13.5
0.89
0.16
AB-04SL
Ash Pore Water
07/30/2018
0.38 j,B,SI
<50
<0.1
NA
7.8
<0.2
80.3
0.48 j,S1
0.091
0.49 j
1510
0.039 j
60
<10
0.0119 U
0.2 U
0.212 U
0.0066
0.0066
0.006
9
0.87
0.12 M1
AB-04SL
Ash Pore Water
11/01/2018
0.51 SI
44.2 j
<0.1
NA
6.4
<0.2
89
0.66
0.088
0.46 j
1510
0.029 j
62.8
<10
0.339 U
-0.339 U
0.339 U
NA
0.006
NA
22.7
0.83
0.13
AB-04UA15
Ash Pore Water
08/07/2018
0.28j
<50
<0.1
NA
<5
<0.2
128
0.43j
<0.05
1
1980
0.038j
54.3
<10
NA
NA
NA
NA
NA
NA
40
0.099j
<0.05
AB-04UA15
Ash Pore Water
11/01/2018
0.21 j,S1
<50
<0.1
NA
<5
<0.2
155
1.5
<0.05
0.96
2310
<0.1
54.3
<10
NA
NA
NA
NA
NA
NA
61
0.082j
<0.05
AB-05BR
Bedrock
01/31/2018
0.92 S1
<50
<0.1
NA
128
<0.2
<0.5
13.5
<0.05
<0.5
24.5
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
AB-05BR
Bedrock
05/01/2018
0.45 j,S1
<50
<0.1
NA
117
<0.2
<0.5
6.2
<0.05
<0.5
22.3
0.044 j
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
AB-05BR
Bedrock
07/30/2018
0.35 j,S1
<50
<0.1
NA
103
<0.2
0.12 j,S1
3.7
<0.05
<0.5
21.4
0.037 j
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
AB-05BR
Bedrock
10/22/2018
IA SI
<50
<0.1
NA
94.8
<0.2
<0.5
4.2
0.028 j
<0.5
21.3
0.036 j
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
0.03 j
AB-05BRU
Deep
01/31/2018
2.5 S1
121
<0.1
NA
209
<0.2
<0.5
10.9
<0.05
<0.5
37.6
0.15
0.5
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
AB-05BRU
Deep
05/01/2018
3.3 S1
86.2
<0.1
NA
201
<0.2
0.18 j
9.5
<0.05
<0.5
30.1
0.14
0.3
5.8 j
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
AB-05BRU
Deep
07/30/2018
1.8 S1
97.8
<0.1
NA
196
<0.2
0.14 j,51
3.7
<0.05
<0.5
30
0.1
0.29 j,S1
4 j
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
AB-05BRU
Deep
10/22/2018
2.2
100
<0.1
NA
193
<0.2
0. 12j
3.3
<0.05
<0.5
30
0.12
0.23 j,S1
5.2j
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
AB-05S
Ash Pore Water
01/31/2018
<0.5
996
<0.1
NA
236
<0.2
2210
2
0.87
<0.5
3180
<0.1
1.6
<10
0.993
0.369
1.362
0.0806
0.0806
NA
<5
1.9
1.2
AB-05S
Ash Pore Water
05/01/2018
<0.5
1340
<0.1
NA
252
<0.2
1790
2.9
0.93
<0.5
3160
0.062 j
1.6
<10
0.377 U
0.0912 U
0.468 U
0.118
0.118
0.124
<5
1.9
1.1
AB-05S
Ash Pore Water
07/30/2018
0.2 j,S1
982
<0.1
NA
176
<0.2
2080
2.3
0.92
<0.5
3440
0.027 j
1.2 S1
<10
0.764
0.913 U
1.68 U
0.121
0.121
0.123
<5
2
1.2
AB-05S
Ash Pore Water
10/22/2018
0.39 j,S1
851
<0.1
NA
159
<0.2
1790
2.8
0.96
<0.5
3340
0.027 j
1
6.2 j
0.582 U
0.269 U
0.851 U
NA
0.12
NA
<5
2.2
1
AB-06BR
Bedrock
01/29/2018
<0.5
2720
<0.1
NA
55.1
<0.2
<0.5
<0.5
<0.05
<0.5
94.6
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
0.063
AB-06BR
Bedrock
04/30/2018
<0.5
2840
<0.1
NA
65.2
<0.2
<0.5
<0.5
<0.05
<0.5
95.7
<0.1
0.069 j,S1
<10
NA
NA
NA
<0.0005
<0.0005
<0.0005
<5
0.072 j,M1
0.049 j
AB-06BR
Bedrock
07/30/2018
<0.5
3090
<0.1
NA
80.2
<0.2
<0.5
0.16 j,S1
0.034 j
<0.5
98.4
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
0.07 j
0.05 j
AB-06BR
Bedrock
10/22/2018
0.13 j,S1
2900
<0.1
NA
59.3
<0.2
<0.5
<0.5
0.045 j
<0.5
92.2
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
0.069 j
0.054
AB-06D
Deep
01/29/2018
1.1
<50
<0.1
NA
36.5
<0.2
<0.5
0.62 S1
<0.05
<0.5
26.8
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
AB-06D
Deep
04/30/2018
IA S3
<50
0.046j
NA
36.1
<0.2
<0.5
0.58 SS
<0.05
<0.5
28.2
0.063j
0.063 j,B,SI
<10
NA
NA
NA
<0.0005
<0.0005
<0.0005
<5
<0.1 M3
<0.05
AB-06D
Deep
08/03/2018
1
<50
0.18
NA
33.5
<0.2
<0.5
0.67
<0.05
<0.5
25.9
0.062 j
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
AB-06D
Deep
10/22/2018
1.7
<50
<0.1
NA
33.7
<0.2
<0.5
0.87
<0.05
<0.5
26.8
0.058 j
<0.3
5.7 j
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
AB-06S
Ash Pore Water
01/29/2018
<0.5
107
<0.1
NA
56.8
<0.2
267
0.88 SI
0.3
0.6
1670
<0.1
5.3
<10
0.177
0.602
0.779
0.0012
0.0012
NA
<5
0.33
0.3
AB-06S
Ash Pore Water
04/30/2018
<0.5
102
<0.1
NA
45.2
<0.2
297
1.3 S1
0.23
0.46j
2420
<0.1
8.2
<10
0.171 U
1.17
1.34
0.0014
0.0014
0.0016
<5
0.49
0.23
AB-06S
Ash Pore Water
07/30/2018
<0.5
84.4
<0.1
NA
43.8
<0.2
354
0.81 S1
0.2
0.45j
2460
<0.1
6.4
<10
0.378 U
0.258 U
0.636 U
0.0022
0.0022
0.0019
8.1
0.25
0.18 MI
AB-06S
Ash Pore Water
10/22/2018
0.2 j,S1
87.5
<0.1
NA
39.3
<0.2
289
1.1
0.17
0.44 j
2580
<0.1
8.1 BC
<10
0.198 U
0.478 U
0.676 U
NA
0.0021
NA
10
0.31
0.16
ADI-01
Shallow
12/18/2018
2.3 S1
<50
<0.1
NA
29.4
<0.2
<0.5
0.75
0.028 j
0.57
4.4 j
0.25
0.089 j,S1
6.3 j
NA
NA
NA
NA
NA
NA
<5
<0.1
0.027 j
AD2-01
Shallow
12/18/2018
2.2 S1
<50
0.09 j
NA
58.9
<0.2
<0.5
0.84
<0.05
3.3
43.7
0.23
0.2 j,S1
13.6
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
AD2-02
Shallow
12/18/2018
0.62 B,S1
<50
<0.1
NA
140
<0.2
<0.5
<0.5
0.032 j
1.1
42.8
0.051 j
0.18 j,S1
2.8 j
NA
NA
NA
NA
NA
NA
<5
0.066 j
0.038 j
AD2-03
Shallow
12/18/2018
0.28 j,B,SI
<50
<0.1
NA
2.9 j
<0.2
<0.5
<0.5
0.027 j
<0.5
6.8
0.029 j
0.21 j,S1
2.9 j
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
AD2-04
Shallow
12/18/2018
0.32 j,S1
<50
<0.1
NA
5.9
<0.2
<0.5
0.48 j
0.05 j
1.1
16.8
0.11
0.17 j,B,SI
4.2 j
NA
NA
NA
NA
NA
NA
<5
<0.1
0.074
AD3-01
Shallow
12/18/2018
0.59 B,S1
<50
<0.1
NA
20.2
<0.2
<0.5
0.86
<0.05
0.93
7.1
0.048 j
0.094 j,S1
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
0.029 j
AD3-02
Shallow
12/18/2018
0.55 B,S1
<50
<0.1
NA
21.9
<0.2
<0.5
1.4
0.035 j
0.54
14.6
0.031 j
0.18 j,S1
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
0.041 j
AS-011)
Deep
01/31/2018
7.8 S1
654
0.61 S1
NA
279
<0.2
<0.5
2.3
<0.05
0.88
172
0.29
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
AS-OSD
Deep
04/30/2018
1.8 S1
<50
0.045j
NA
272
<0.2
<0.5
0.42 j,S1
<0.05
0.75
177
0.27
<0.3
3.5j
NA
NA
NA
<0.0005
<0.0005
<0.0005
<5
<0.1
<0.05
AS-011)
Deep
07/31/2018
8.6
<50
0.078 j
NA
285
<0.2
1.9
2.3 B
<0.05
0.63
182
0.27
<0.3
9.9 j,B
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
AS-OSD
Deep
10/24/2018
4.3
<50
<0.1
NA
285
<0.2
1.1
1.3
<0.05
0.49 j
175
0.27
<0.3
11.3 S1
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
AS-01SB
Shallow
01/31/2018
1 S1
<250
<0.5 D3
NA
876
<0.2
<0.5
5.5
<0.05
33.1
100
<0.5 D3
<0.3
<50
NA
NA
NA
NA
NA
NA
<5
0.65
<0.05
AS-01SB
Shallow
04/30/2018
5.8 S1
<250 D3
0.44
NA
858
<0.2
<0.5
8.9
<0.05
7
103
0.56
<1.5 D3
44 j,D3
NA
NA
NA
0.0011
0.0011
0.001
<5
0.8
<0.05
AS-01SB
Shallow
07/31/2018
1.9
<50
0.46
NA
567
<0.2
0.13 j
3 B
<0.05
6.4
74.9
0.56
<0.3
23.7 B
NA
NA
NA
NA
NA
NA
<5
0.6
<0.05
AS-01SB
Shallow
10/24/2018
4.1
<100
0.47
NA
727
<0.2
0.15 j
3.5
1 <0.05
1 4.6
96.6
0.54
<0.3
33.9 S1
NA
NA
NA
NA
NA
NA
<5
0.51
<0.05
Page 6 of 45

TABLE 3-3
2018 COMPREHENSIVE GROUNDWATER QUALITY DATA
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS LLC, MOORESBORO NC
Analytical Parameters
FIELD PARAMETERS
WATER QUALITY PARAMETERS
SELECTED 40CFR257 APPENDIX III CONSTITUENTS plus Sr
INORGANIC PARAMETERS (TOTAL CONCENTRATION)
pH
Water
Level
Temp
Spec
Cond
DO
ORP
Eh
Turbidity
Alkalinity
Bi-
carbonate
Alkalinity
Sulfide
Total
Organic
Carbon
Total
Suspended
Solids
Boron
Calcium
Chloride
Strontium
Sulfate
Total
Dissolved
Solids
Aluminum
Antimony
Arsenic
Barium
Beryllium
Cadmium
Chromium
(VI)
Chromium
Reporting Units
S.U.
ft
Deg C
umhos/cm
mg/L
mV
mV
NTUs
mg/L
mg/L
mg/L
mg/L
mg/L
ug/L
mg/L
mg/L
ug/L
mg/L
mg/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
15A NCAC 02L Standard
6.5-8.5
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
700
NE
250
NE
250
Soo
NE
1*
SO
700
4*
2
SO
10
Background Threshold Values (Shallow Flow Zone)
4.4-6.1
NE
NE
NE
NE
NE
NE
NE
13.67
14.42
0.1
1
NE
50
3.221
7.7
36.71
1.169
75.47
253
1
0.5
73.03
0.188
1
0.452
3.968
Background Threshold Values (Deep Flow Zone)
4.8-6.1
NE
NE
NE
NE
NE
NE
NE
19.74
18.13
0.1
1
NE
50
11
5.1
56.14
10
70.98
290
1
0.763
23
0.2
1
0.16
1.791
Background Threshold Values (Bedrock Flow Zone)
5.4-7.4
NE
NE
NE
NE
NE
I NE
NE
I 53
68.82
1 0.1
1
NE
50
16
1 8.656
107.1.
15.1
1.20
208.2
1
1
19.33
1
1
0.12
3.567
Sample ID
Sample Location
Aquifer Name
Sample
Collection Date
Analytical Results
AS-02BR
Bedrock
01/30/2018
8.3
39.91
15
407
0.90
-195
10
6.1
79.5
79.5
0.14
<1
6.9 Sl
401
56.5
26.3
188
87
261
<100
<0.5
2
7.4
<0.1
<0.08
<0.025
21.2 S1
AS-02BR
Bedrock
04/30/2018
8.1
39.66
25
546
0.50
-281
-76
3.1
94
94
0.19
0.9j
2.6
389
60.2
42.5
244
104
290
<100
0.23j
2.3
11.7
<0.1
<0.08
0.092 S1
1.5 S1
AS-02BR
Bedrock
08/01/2018
7.7
40.29
21
427
0.20
-138
67
2.6
76.1
76.1
0.067 j
<1
<2.5
411
53.4
33.1
213
97.1
277
<100
0.22 j
1.8
7.7
<0.1
<0.08
0.082 S1
0.94
AS-02BR
Bedrock
10/22/2018
7.9
40.32
17
443
0.20
-182
23
1.6
84
84
0.17
<1
<2.5
408
52.8 M1
38.8
242
100
309
<100
0.1j
2
5.2
<0.1
<0.08
<0.025
0.23 j,S1
AS-02D
Deep
01/30/2018
4.9
31.15
7
580
0.80
105
310
3.2
28.5
28.5
0.24
1.2
<2.5
346
59.4
30.1
373
215
408
<100
<0.5
0.69 S1
105
0.13
<0.08
0.051 SI
13.1
AS-02D
Deep
04/30/2018
6.6
29.80
20
621
0.40
-51
154
1.9
63.3
63.3
0.5
3.2
<2.6
343
75.4
30.7
406
216
452
<100
<0.5
1.2
89.2
<0.1
<0.08
0.19 S1
0.86 S1
AS-02D
Deep
08/06/2018
7.8
33.14
29
672
0.10
-204
1
3.8
55.9
55.9
0.084j
1.4
3.1
337
54.7
32.6
589
215
459
83.7j
0.67
1.1
88.1
0.043j
<0.08
<0.025
0.6
AS-02D
Deep
10/22/2018
7.7
30.24
19
734
0.40
-111
94
2.8
90
90
0.066j
2.7
<2.5
348
69.8
32.8
574
225
509
<100
<0.5
1.1
95
0.041j
<0.08
<0.025
0.37 j,S1
AS-02S
Shallow
01/30/2018
4.2
25.26
14
852
2.80
256
461
3.9
<5
<5
<0.1
<1
<2.5
1100
SOS
48
230
374
630
1050
<0.5
7.8
34.8
0.36
1.1
1.4 Sl
1.7 Sl
AS-02S
Shallow
04/30/2018
4.5
23.90
18
738
2.40
-6
199
2.3
<5
<5
<0.1
<1
<2.5
728
66.4
40
145
315
725
454
<0.5
4.9
20.5
0.24
0.83
0.76 M1,S1
3.5
AS-02S
Shallow
08/01/2018
4.6
24.79
23
830
2.60
310
515
4.7
<5
<5
<0.1
<1
<2.5
1260
95.2
49.6
253
352
635
786
<0.5
6.5
32.8
0.29
0.98
0.089 S1
0.41j
AS-02S
Shallow
10/22/2018
4.6
24.64
20
833
2.30
344
549
3.8
lj
lj
<0.1
<1
<2.5
1370
110
50.6
284
340
616
763
<0.5
6.7
41.1
0.27
3.1
1.4
1.7
AS-03BRU
Deep
01/31/2018
5.2
51.19
17
45
5.30
160
365
7.2
5.2
5.2
<0.1
1.1
15.1
<50
1.39
6.2
18.7
<1
34
332
<0.5
<0.1
39.3
<0.1
<0.08
<0.025
1.3 Sl
AS-03BRU
Deep
05/04/2018
5.3
49.87
19
24
4.19
157
362
6.2
<5
<5
<0.1
<1
<2.5
<50
1.37
6.3
17.4 Sl
<1
38
138
<0.5
0.079j
35.1
0.08j
0.033j
<0.025
0.23 j,S1
AS-03BRU
Deep
08/06/2018
5.4
50.00
19
44
6.10
95
300
2.4
5.3
5.3
<0.1
<1
3.4
<50
1.35
7
20.5
<1
38
105
<0.5
<0.1
42
0.078 j
<0.08
<0.025
0.41 j
AS-03BRU
Deep
10/23/2018
4.9
50.10
18
45
5.20
187
392
1.7
6.1
6.1
<0.1
<1
20.6
<50
1.3
6.8
19.2
<1
34 D6
339
<0.5
0.11
40.3
0.076 j
<0.08
<0.025
1.7
AS-04D
Deep
01/31/2018
5.9
94.02
15
82
3.40
89
294
3.1
26.8
26.8
<0.1
<1
<2.5
<50
5.27
6.7
34.6
2.3
86
<100
<0.5
0.15
10.1
<0.1
<0.08
0.35
1.3 Sl
AS-04D
Deep
05/01/2018
5.5
93.50
25
69
2.90
123
328
1.1
16.5
16.5
<0.1
<1
<2.5
<50
4.28
6.7
25.5
1.2
60
<100
0.35 j
<0.1
9.1
<0.1
0.062 j
1.9 Sl
4.2
AS-04D
Deep
08/02/2018
5.2
93.05
24
71
3.50
92
297
0.6
15.8
15.8
<0.1
<1
<2.5
<50
3.62
8
27.8
1.3
58
232 SI
0.12j
0.14
9.2
<0.1
0.049j
1.1
1.4
AS-04D
Deep
10/31/2018
4.9
93.16
19
67
3.90
12
217
0.5
11.3
11.3
<0.1
<1
<2.5
29.4 j
3.6
7.7
27.6
1
74
<100
0.16 j
0.056 j
7.3
0.016 j
0.063 j
0.14
1.1 S1
AS-05BR
Bedrock
01/30/2018
7.5
37.80
9
129
3.40
63
268
4.6
45.9
45.9
<0.1
<1
<2.5
<50
15.2
1.7
63.8
14.7
98
<100
1.6
1.2
<5
<0.1
<0.08
2
9
AS-05BR
Bedrock
04/30/2018
7.1
37.19
21
125
2.80
83
288
4.6
40.1
40.1
<0.1
<1
<2.6
<50
15.2
1.7
58.9
10
85
110
1
0.97 S1
7.4
<0.1
<0.08
1.8 Sl
3.1
AS-05BR
Bedrock
07/30/2018
6.4
37.24
20
77
2.70
145
350
0.9
32.5
32.5
<0.1
<1
<2.5
<50
7.74
1.5
36.5
2.4
78
109 SI
0.25 j
0.4 Sl
7.6
<0.1
<0.08
0.25 M1,SS
0.76
AS-05BR
Bedrock
10/24/2018
6.7
37.38
16
86
3.40
50
255
1.6
33
33
<0.1
<1
<2.5
<50
9.1
1.5
38.5
2.8
70
128
0.36 j
0.54
6.5
0.02 j
<0.08
0.35 Ml
0.81
AS-05BRU
Deep
01/30/2018
5.9
41.07
11
40
3.20
107
312
5.9
14
14
<0.1
<1
<2.5
<50
2.23
1.7
20.8
<1
37
<100
<0.5
0.25 S1
8.5
<0.1
<0.08
0.37 Sl
16
AS-05BRU
Deep
04/30/2018
5.8
40.55
16
40
3.00
47
252
6.7
11.3
11.3
<0.1 Ml
<1
10 D6
<50
2.44
1.8 Ml
21.2
<1 M1
48
105
<0.5
0.18 SS
9
0.041j
<0.08
0.25 S1
13.8
AS-05BRU
Deep
07/30/2018
5.7
40.60
21
43
3.20
200
405
9.5
17.4
17.4
<0.1
<1
7.5
<50
2.61
1.5 M1,RS
24
<1 M1,RS
50
213 SI
<0.5
0.19 S1
9.3
<0.1
<0.08
0.025 SI
0.4 j
AS-05BRU
Deep
10/24/2018
5.9
40.86
16
39
3.30
89
294
4.0
12
12
<0.1
<1
6.4
<50
2.3
1.7
20.8
<1
47
116
<0.5
0.18
8.9
0.036 j
<0.08
0.026
0.44 j
AS-05S
Shallow
02/02/2018
5.4
38.72
8
23
6.00
78
283
8.3
5.8
5.8
<0.1
<1
7.2
<50
0.362
2.1
7
<1
<25
379
<0.5
0.16
30.4
0.11
<0.08
1.6
6.4
AS-05S
Shallow
04/30/2018
5.3
37.80
18
23
3.20
63
268
5.0
<5
<5
<0.1
<1
<2.5
<50
0.268
2.3
6.3
<1
<25
269 SI
<0.5
<0.1
32.3
0.11
0.029 j
<0.025
0.57 Sl
AS-05S
Shallow
07/30/2018
5.0
37.89
22
24
4.30
217
422
7.2
7
7
<0.1
<1
66.5
<50
0.249 SI
2.2
8
<1
35
2830
<0.5
36.1
44.3
<0.1
<0.08
<0.025
<0.5
AS-05S
Shallow
10/24/2018
5.3
38.18
16
23
4.50
138
343
7.9
1 j
1 j
<0.1
<1
<2.5
<50
0.19
2.3
6.8
<1
28
151
<0.5
0.045 j
34.8
0.11
<0.08
<0.025
0.31 j
AS-06BRA
Bedrock
01/31/2018
6.8
100.65
12
111
1.10
68
273
5.3
54.3
54.3
<0.1
<1
<2.5
<50
14.4
1.5
65.3
3.8
79 D6
<100
<0.5
0.8
6
<0.1
<0.08
<0.025
1.9 SS
AS-06BRA
Bedrock
05/01/2018
6.7
100.13
30
117
1.40
15
220
4.2
51
51
<0.1
<1
<2.5
<50
14.8
1.7
52.3
4.1
102
60.8 j
0.96
0.62
5.4
<0.1
<0.08
<0.025
4.2
AS-06BRA
Bedrock
08/02/2018
6.6
100.30
23
113
1.00
40
245
1.1
55.2
55.2
<0.1
<1
<2.5
<50
14.4
1.6
65.1
4.2
99
<100
0.3 j
0.2
5 j
<0.1
<0.08
<0.025
0.44 j
AS-06BRA
Bedrock
10/31/2018
6.2
100.57
18
107
0.80
101
306
0.6
47.3
47.3
<0.1
<1
<2.5
<50
13.6
1.5
59
3.6
91
<100
0.51
0.26
4.7j
<0.1
<0.08
0.12
0.71 S1
AS-06D
Deep
01/31/2018
5.8
97.25
14
44
5.60
133
338
9.6
15.3
15.3
<0.1
<1
<2.5
<50
2.61
1.8
28.6
<1
41
<100
<0.5
<0.1
13.5
<0.1
<0.08
0.071 SI
9.1
AS-06D
Deep
05/01/2018
5.6
96.88
23
44
4.80
-40
165
3.0
14.6
14.6
<0.1
<1
<2.6
<50
2.75
1.8
26.6
0.66 j
52
<100
0.2 j
0.074 j
11.9
<0.1
<0.08
0.045 S1
1.1
AS-06D
Deep
08/02/2018
5.8
96.75
24
47
4.10
107
312
2.3
14.5
14.5
<0.1
<1
<2.5
<50
2.79
2
31.3
0.8 j
52
<100
<0.5
<0.1
15.5
<0.1
<0.08
0.059
0.84
AS-06D
Deep
10/31/2018
5.2
96.98
20
44
4.20
127
332
0.8
11.4
11.4
<0.1
<1
<2.5
<50
2.9
1.9
31.1
0.69 j
54
<100
<0.5
<0.1
14.9
0.02 j
0.059 j
0.14
0.46 j,S1
AS-06S
Shallow
02/02/2018
5.6
96.58
9
34
4.50
286
491
9.7
5.2
5.2
<0.1
<1
9.3
<50
0.86
3.6
12
<1 MI
<25
229
<0.5
<0.1
14.5
<0.1
<0.08
0.1 MS,SI
15.7
AS-06S
Shallow
05/07/2018
5.2
96.14
21
35
4.60
-88
117
9.9
4.9 j
4.9 j
<0.1
<1
6.1
<50
0.792
3.3
12.4
0.61 j
29
693
0.39 j
0.079 j
15.8
0.048 j
0.03 j
0.22 S1
48.5
AS-06S
Shallow
08/02/2018
4.9
96.05
27
36
4.50
82
287
8.7
5.7
5.7
<0.1
<1
13
<50
0.753 SI
3.2
13.1
0.84 j
34
184 SI
<0.5
<0.1
16.3
<0.1
<0.08
0.12
0.49 j
AS-06S
Shallow
10/31/2018
5.2
96.25
18
32
6.10
109
314
7.0
<5
<5
<0.1
<1
6.4
<50
0.8
3.1
13.5
0.82 j
30 D6
65.3 j
<0.5
<0.1
14.8
0.03 j
<0.08
0.14
1.2 Si
AS-07BRA
Bedrock
02/02/2018
12.2
74.95
10
2375
0.40
-148
57
9.7
512
<5
<0.1
3
28.3
<50
16.4
7.5
899
70.3
720
3600
12.8
21.9
75
<0.1
<0.08
0.066 SI
14.4
AS-07BRA
Bedrock
04/30/2018
11.8
48.20
22
20
0.70
85
290
9.9
450
<5
<0.1
2.1
30.3
40.2j
10.3
7.3
728
67.1
680 D6
3800
10.9
20.7
65.8
<0.1
<0.08
0.68 SI
3.9
AS-07BRA
Bedrock
08/03/2018
12.9
46.95
22
2232
1.60
76
281
1.5
503
<5
<0.1
2.3
3.5
44.6 j
12.5
7.2
903
57.8
Soo
4830
12.3
17
82.9
<0.1
<0.08
1.4
1.2
AS-07BRA
Bedrock
10/30/2018
11.9
47.34
14
2379
1.00
-209
-4
3.6
533
<5
<0.1
2.5
<2.5
55
15.4
7.1
1030
59.8
700
5060
10.3
19.1
81.7
<0.1
<0.08
0.98
1.4
AS-07D
Deep
01/29/2018
5.9
38.10
17
430
0.10
70
275
5.5
8.1
8.1
<0.1
<1
<2.5
755
41.4
33.4
273
129
269
<100
<0.5
0.12 S1
270 S1
<0.1
0.4
0.36
1 SS
AS-07D
Deep
05/01/2018
5.6
36.11
17
453
0.30
50
255
4.6
12.5
12.5
<0.1
<1
3.1
716
45.7
34.7
270
129
320
91.6j
<0.5
0.24
121
0.088j
0.26
0.098 S1
11
AS-07D
Deep
08/03/2018
4.9
36.45
21
447
0.30
115
320
8.9
7
7
<0.1
<1
12.2
941
46.7
39.5
269
128
328
271
0.12j
0.23
120
0.099j
0.47
0.24
2.4
AS-07D
Deep
10/30/2018
5.5
37.28
17
462
0.80
123
328
1.4
7.2
7.2
<0.1
<1
<2.5
934
47.6
40.4
263
134
299
<100
<0.5
0.18
70.8
0.098j
0.54
0.35 SI
0.53
AS-07I
Shallow
10/30/2018
5.3
33.49
20
635
0.10
-154
51
3.5
14.5
14.5
<0.1
0.61j
<2.5
707
46.2
45.6
182
209
438
451
<0.5
2.4
47
2.3
1.6
0.038 SI
0.31j
Page 7 of 45

TABLE 3-3
2018 COMPREHENSIVE GROUNDWATER QUALITY DATA
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS LLC, MOORESBORO NC
Analytical Parameters
INORGANIC PARAMETERS (TOTAL CONCENTRATION)
INORGANIC PARAMETERS (DISSOLVED CONCENTRATION WITH FILTER SIZE)
Cobalt
Copper
Iron
Lead
Lithium
Magnesium
Manganese
Mercury
Molybdenum
Nickel
Nitrate
+ Nitrite
Potassium
Selenium
Sodium
Thallium
Vanadium
Zinc
Aluminum
Antimony
Arsenic
Barium
Beryllium
Boron
Cadmium
Chromium
Cobalt
Reporting Units
ug/L
ug/L
ug/L
ug/L
ug/L
mg/L
ug/L
ug/L
ug/L
ug/L
mg-N/L
mg/L
ug/L
mg/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
15A NCAC 02L Standard
1*
1000
300
15
NE
NE
50
1
NE
100
NE
NE
20
NE
0.2*
0.3*
1000
NE
NE
NE
NE
NE
NE
NE
NE
NE
Background Threshold Values (Shallow Flow Zone)
10.65
6.569
765.3
1
NE
2.479
168.8
0.2
1
6.256
8.837
5
1
6.139
0.117
1.059
15
NE
NE
NE
NE
NE
NE
NE
NE
NE
Background Threshold Values (Deep Flow Zone)
9.041
9.453
559.7
1
NE
1.6
78.31
0.2
1
12.56
2.8
5
1
4.41
0.063
1.095
15.03
NE
NE
NE
NE
NE
NE
NE
NE
NE
Background Threshold Values (Bedrock Flow Zone)
1.497
5
6220
1
NE
1 2.328
89.4
0.2
1.716
5
0.92
5
1
1 7.42
0.1
0.37
10
NE
NE
NE
NE
NE
NE
I NE
NE
NE
Sample ID
Sample Location
Aquifer Name
Sample
Collection Date
Analytical Results
AS-02BR
Bedrock
01/30/2018
0.33S1
0.87S1
310
0.12
12.1
3.38
341
<0.2
13.4
12.3 Sl
<0.02
5.78
<0.5
17.4
<0.1
0.43S1
<10
<100
<0.5
1.8
5.6
<0.1
350
<0.08
3.9 Sl
<0.1
AS-02BR
Bedrock
04/30/2018
0.063 j
0.49 j,B,SI
169
0.12 B,S1
12.5
3.88
358
<0.2
16.2
0.74
<0.02
10.6
<0.5
33.3
<0.1
0.26 j,S1
<10
<100
0.18 j
2.1
7.2
<0.1
374
<0.08
0.59 Sl
0.049 j
AS-02BR
Bedrock
08/01/2018
0.097 j
0.73
153
0.1
13.2
3.42
350
<0.2
18.3
1.4
0.16
7.3
<0.5
22.3
<0.1
<0.3
17.2 B,SI
<100
0.17 j
1.6
6
<0.1
382
<0.08
2.5 SI
0.08 j
AS-02BR
Bedrock
10/22/2018
0.065 j
0.34 j,SI
121
<0.1
11.6
3.6
360
<0.2
15.7
0.82
<0.02
8.6
<0.5
24.9
<0.1
0.14 j
<10
<100
<0.5
1.6
5.1
<0.1
382
<0.08
0.18 j
0.051 j
AS-02D
Deep
01/30/2018
1.8
<0.5
890
<0.1
11.4
16.6
594
<0.2
0.61
18
<0.02
8.35
<0.5
20.6
<0.1
0.32S1
<10
<100
0.55
0.75
93.2
<0.1
336
<0.08
2.4
1.3
AS-02D
Deep
04/30/2018
0.45
0.12 j,B,SI
505
0.039 j,B,S1
9.6
16.3
596
<0.2
1
4.1
<0.02
12.6
<0.5
24.7
<0.1
0.31 S3
4.1 j,S1
<100
0.5
1.4
83.8
0.044 j
305
<0.08
0.57S1
0.51
AS-02D
Deep
08/06/2018
1.3
0.52
453
0.17
SOS
15.1
558
<0.2
22.6
9
<0.02
40.8
0.96
28.8
<0.1
1.1
5.9 j,B
<100
0.83
0.7
60.7
<0.1
300
<0.08
0.76
0.27
AS-02D
Deep
10/22/2018
0.18
5.3
133
0.12
59.9
15.5
528
<0.2
11.6
2
<0.02
37.2
<0.5
27.8
<0.1
0.2 j
3.3 j,B
<100
0.44 j
0.89
68.3
0.012 j
306
<0.08
0.46 j
0.097 j
AS-02S
Shallow
01/30/2018
16.6
<0.5
<250
<2 D3
2.9
19.6
11300
<0.2
<0.5
3.4
0.26
<50
39.8
<50
<2 D3
<0.3
<50
697
<0.5
8.2
27.3
0.32
930
1
<0.5
14.4
AS-02S
Shallow
04/30/2018
14.3
0.45 j,B,SI
26.6 j
0.49 Sl
2.1
12.9
6210
0.1 j
<0.5
4.1
0.45
5.68
4.1
7.36
0.38
<0.3
6 j,D3,Sl
525
<0.5
5.4
23.5
0.27
801
0.84
3.5
15.6
AS-02S
Shallow
08/01/2018
18.4
0.29 j
<250 D3
0.63
2.4
19.3
12000
<0.2
<0.5
3
0.45
<25 D3
5.7
10.5 j,D3
0.44
<0.3
13 j,D3,B,S1
738
<0.5
6.3
29.4
0.27
1060
0.95
0.75 S1
16.8
AS-02S
Shallow
10/22/2018
20
0.3 j,SI
<250
0.76
2.2 j
19.8
13000
<0.2
<0.5
4.4
0.44
<25
4.2
11.5 j
0.54
<0.3
<50
604 D3
<0.5
5.8
34 D3
0.28
1150 D3
2.4
2.3
19.7
AS-03BRU
Deep
01/37/2018
0.1
76.9
353
0.17 SI
1.8
0.595
8.5
<0.2
<0.5
1.2SI
0.4
<5
<0.5
<5
<0.1
<0.3
35.6
<100
<0.5
<0.1
34.8
<0.1
<50
<0.08
<0.5
<0.1
AS-03BRU
Deep
05/04/2018
0.072 j
0.28 j
123
0.085 j,B
1.6
0.585
6.1
<0.2
<0.5
0.51SI
0.39
3.14 j
<0.5
3.49 j
0.067 j
0.12 j,S1
3.3 j,B
<100
<0.5
0.11
38
0.062 j
<50
<0.08
0.16 j
0.059 j
AS-03BRU
Deep
08/06/2018
0.052 j
1.3
81
0.11
1.9
0.591
5.6
<0.2
1.2
0.4 j
0.4
2.87 j
<0.5
3.42 j
0.059 j
0.098 j
4.2 j,B
<100
<0.5
<0.1
39.6
0.089 j
<50
<0.08
<0.5
0.04 j
AS-03BRU
Deep
10/23/2018
1.5
26.7 Sl
394
0.51
1.7 j,SI
0.62
38.8
<0.2
29.5
59.8
0.41
2.8 j
<0.5
3.2 j
0.067 j
1.2
29.1
<100
<0.5
<0.1
38.7
0.053 j
<50
<0.08
0.21 j
0.088 j
AS-04D
Deep
01/31/2018
0.56
1.9 S1
69.6
<0.1
8.7
0.727
81.4
<0.2
<0.5
6.5
0.43
<5
<0.5
7.1
<0.1
<0.3
14.9
<100
<0.5
0.3
7.6
<0.1
<50
<0.08
1.2
0.74
AS-04D
Deep
05/01/2018
0.9
1.6 Sl
<50
0.2 SI
6.9
0.796
38.9
<0.2
0.12 j
9.6
0.55
3.66 j
<0.5
5.98
<0.1
<0.3
17.5
<100
0.16 j
0.1
8.6
<0.1
<50
0.059 j
2.4
0.92
AS-04D
Deep
08/02/2018
0.59
16.8
313
0.36 B
6.2
0.764
30.4
<0.2
32
6.5
0.52
3.72 j
<0.5
5.83
<0.1
1.1
35.2
<100
<0.5
<0.1
6.6
<0.1
<50
0.04 j
0.54
0.6
AS-04D
Deep
10/31/2018
0.75
4.4
<50
0.24
5.6SI
0.78
22.6
<0.2
4.9
7.7
0.51
3.9 j
<0.5
6
<0.1
0.34
15
<100
<0.5
0.18
6
0.01 j
27.7 j
<0.08
0.41 j,SI
0.75
AS-05BR
Bedrock
01/30/2018
0.18
0.78 S1
89.6
<0.1
11.1
0.456
6.3
<0.2
1.9
4.5
0.4
5.68
<0.5
7.58
<0.1
3.2
<10
<100
1.1
0.88
5.3
<0.1
<50
<0.08
2
0.13
AS-05BR
Bedrock
04/30/2018
0.067 j
1.1 B,SI
110
0.089 j,B,Sl
6.3
0.523
7.8
<0.2
1.1
1.5
0.37
4.15 j
<0.5
7.36
<0.1
2.1
<10
<100
0.69
0.82
5.8
<0.1
<50
<0.08
0.99 Sl
0.025 j
AS-05BR
Bedrock
07/30/2018
0.041 j
5.7
124 RO
0.11
3.2
0.518
10.2 SI
<0.2
4.8 SI
1.1
0.32
<5
<0.5
5.23
<0.1
0.87
10.1
<100
0.22 j
0.36 SI
7.3
<0.1
<50
<0.08
0.57 SI
<0.1
AS-05BR
Bedrock
10/24/2018
0.061 j
6.3
111
0.19
3.9
0.52
12.1
<0.2
4.1
1
0.33
<5
<0.5
5.3
<0.1
1.1 B
7.5 j
<100
0.2 j
0.37
6.3
<0.1
<50
<0.08
1.2 SI
0.028 j
AS-05BRU
Deep
01/30/2018
0.43
0.93 Sl
260
<0.1
0.81
0.402
10
<0.2
0.56
12.9
0.28
<5
<0.5
<5
<0.1
0.37S1
<10
<100
<0.5
0.18
8
<0.1
<50
<0.08
1.7
0.35
AS-05BRU
Deep
04/30/2018
0.37
1 B,SI
693
0.12 B,SI
0.74
0.472
23.5
<0.2
0.58SI
13.5
0.27
<5
<0.5
3.98 j
<0.1
<1.5 D3
3.9 j,SI
<100
<0.5
0.2
7.7
<0.1
<50
<0.08
0.68S1
0.16
AS-05BRU
Deep
07/30/2018
0.08 j
1.3 Sl
233 RO
0.17
0.75
0.493
9 Sl
<0.2
0.86SI
0.3 j
0.3
<5
<0.5
4.16 j
<0.1
0.21 j,S1
<10
<100
<0.5
0.21S1
8
<0.1
<50
<0.08
0.18 j,SI
0.052 j
AS-05BRU
Deep
10/24/2018
0.1
1.8 Sl
91.8
0.13
0.77 j,SI
0.42
12.1
<0.2
3.3
1.8
0.29
<5
<0.5
3.7 j
<0.1
0.2 j,B
4.6 j
<100
<0.5
0.15
7.8
0.029 j
<50
<0.08
<0.5
0.069 j
AS-05S
Shallow
02/02/2018
0.26
0.77 S1
224
0.21
1.3
0.397
15.2
<0.2
<0.5
5.2
0.21 SI
<5
<0.5
<5
<0.1
<0.3
<10
<100
<0.5
0.17
29.4
<0.1
<50
<0.08
5.7
0.23
AS-05S
Shallow
04/30/2018
0.22
0.26 j,B,SI
151 S1
0.13 B,SI
0.96
0.372
12.5
<0.2
<0.5
0.76
0.17
<5
<0.5
2.04 j
0.08 j
0.083 j,SI
3.6 j,SI
<100
<0.5
<0.1
30.2
0.12
<50
<0.08
0.29 j,SI
0.14 S3
AS-05S
Shallow
07/30/2018
0.11
<0.5
1570 RO
<0.1
8.4
0.54
45.6 S1
<0.2
2.5 n
0.27 j
0.2
2.77 j
<0.5
2 j
0.057 j
0.19 j,S1
11.6
<100
<0.5
0.048 j,SI
28.5
<0.1
<50
<0.08
<0.5
0.073 j
AS-05S
Shallow
10/24/2018
0.1
1.6 Sl
70.5
0.14
0.92 j,SI
0.37
10.5
<0.2
0.22 j
1
0.2
<5
<0.5
2 j
0.078 j
0.17 j,B
4.8 j
<100
<0.5
0.043 j
28.9
0.11
<50
<0.08
<0.5
0.077 j
AS-06BRA
Bedrock
01/31/2018
0.15
0.85 S1
125
OA SI
3
1.02
21.4
<0.2
1.5
2.9
0.041
<5
<0.5
5.86
<0.1
1
<10
<100
<0.5
0.66
<5
<0.1
<50
<0.08
<0.5
0.37
AS-06BRA
Bedrock
05/01/2018
0.22
1.1 Sl
122
0.092 j,SI
2.6
1.11
21.6
<0.2
1.8
5.8
0.14
2.74 j
<0.5
6.04
<0.1
1
8.6 j
<100
0.56
0.39
5
<0.1
<50
<0.08
1
0.16
AS-06BRA
Bedrock
08/02/2018
0.12
22.4
62.8
0.21
2.8
1.16
28.6
<0.2
22.5
3
0.031
<5
<0.5
6.1
<0.1
0.86
35.6
<100
0.21 j
0.22
4.6 j
<0.1
<50
<0.08
<0.5
0.084 j
AS-06BRA
Bedrock
10/31/2018
0.084 j,SI
15.1
<50
<0.1
2.7 S3
1.1
19.8
<0.2
6.2
2.6
0.084 B,SI
<5
<0.5
6
<0.1
0.68
25.2
<100
0.28 j
0.21
4.5 j
<0.1
<50
<0.08
0.16 j,SI
0.098 j,SI
AS-06D
Deep
01/31/2018
0.47
8.5
397
<0.1
0.96
0.565
17.8
<0.2
1.1
20.3
0.39
<5
<0.5
<5
<0.1
<0.3
<10
<100
<0.5
<0.1
12.6
<0.1
<50
<0.08
3.6
0.3
AS-06D
Deep
05/01/2018
0.16
0.6 Sl
70
0.09 j,SI
0.99
0.603
7.9
<0.2
0.16 j
1.7
0.42
<5
<0.5
3.96 j
<0.1
<0.3
5.9 j
<100
0.25 j
<0.1
11.9
<0.1
<50
<0.08
0.46 j
0.14
AS-06D
Deep
08/02/2018
0.21
3.5
64.6
0.076 j
0.87
0.618
13.4
<0.2
2.3
7.7
0.42
<5
<0.5
3.88 j
<0.1
<0.3
<10
<100
<0.5
<0.1
14
<0.1
<50
<0.08
<0.5
0.12
AS-06D
Deep
10/31/2018
0.096 j,S1
7.9
<50
<0.1
0.86 j,SI
0.64
12.6
<0.2
3.8
2.8
0.43
<5
<0.5
4.1 j
<0.1
0.18 j
10.5
<100
<0.5
<0.1
13.4
0.017 j
<50
<0.08
0.15 j,SI
0.049 j,S1
AS-06S
Shallow
02/02/2018
0.68
1.4 SI
298
0.28
2.3
0.568
136
<0.2
<0.5
10.4
0.58
<5
<0.5
<5
0.12
<1.5 D3
39.5
<100
<0.5
<0.1
13.2
<0.1
<50
<0.08
3.7
0.57
AS-06S
Shallow
05/07/2018
1.1
2.3
817
0.35
1.7
0.608
138
<0.2
1.3
32.6
0.6
<5
<0.5
3 j
1 0.12
<0.3
48.9
323
0.35 j
<0.1
13.2
0.061 j
31.6 j
0.035 j
8.9
0.73
AS-06S
Shallow
08/02/2018
0.3
1.6
186
0.13
1.5
0.611
76.1
<0.2
5.4
5.9
0.58
<5
<0.5
2.9 j
0.083 j
0.19 j,B
39.4
<100
<0.5
<0.1
13.1
0.038 j
<50
0.035 j
0.96
0.27
AS-06S
Shallow
10/31/2018
0.74
3.6
156
0.18
1.4 j,SI
0.63
111
<0.2
8.6
16.2
0.62
<5
<0.5
3.1 j
0.086 j
0.17 j
44.2
<100
<0.5
<0.1
14.2
0.028 j
<50
<0.08
0.33 j,SI
0.16
AS-07BRA
Bedrock
02/02/2018
0.26
43.7
323
0.35
467
<0.1
5.1
<0.2
41.8
8
<0.02
187 MI
2.4
120 MI
<0.1
31.3
<10
3120
<0.5
<0.1
69.2
<0.1
<50
<0.08
<0.5
<0.1
AS-07BRA
Bedrock
04/30/2018
0.2
18.4
289
0.45SI
367
0.0934j
5
<0.2
41.2
3
<0.02
166
1.9
118
0.093j
27.3
3.5 j,SI
3170
12
18
51.3
<0.1
37.7j
<0.08
0.67 S1
0.056j
AS-07BRA
Bedrock
08/03/2018
0.063 j
25.4
66.6
0.37
425
<0.1
<5
<0.2
55.8
1.2 B
<0.02
176
2.1
109
0.055 j
26.3
8.7 j,B
3950
12.5
17.3
68.5
<0.1
38.5 j
<0.08
0.92
0.059 j
AS-07BRA
Bedrock
10/30/2018
0.073j
22.5
<50
0.29
407
<0.1
<5
<0.2
51.9
1.4
<0.02
208
1.9
125
0.055j
23.6
7.4j
4660
10.7
19.1
75.7
<0.1
51
<0.08
0.68 SI
0.062j
AS-07D
Deep
01/29/2018
0.14
<0.5
69.8 SI
<0.1
6.6
11.5
1560
<0.2
<0.5
5.5
0.092 SI
7.3
0.95
13.3
0.12 SI
<0.3
<10
<100
<0.5
<0.1
252 SI
<0.1
667
0.41
0.75
0.12
AS-07D
Deep
05/01/2018
0.33
0.63 SI
164
0.058 j,SI
14
12.9
1810
<0.2
0.35 j
10.4
0.069
8.39
1
14.9
0.11
<0.3
8.4 j
<100
<0.5
0.22
72.4
0.076 j
725
0.14
3.7
0.3
AS-07D
Deep
08/03/2018
0.28
0.87
274
0.16
5.4
13.7
2130
<0.2
0.28 j
6.3
0.077
9.01
1
14.8
0.13
0.079 j
11.1 B
<100
<0.5
0.09 j
64.4
0.097 j
753
0.45
1.1
0.18
AS-07D
Deep
10/30/2018
0.35
0.65
<50
<0.1
4.9
13.7
2180
<0.2
0.87
12.2
0.077
7.9
0.91
13.2
0.16
<0.3
10.3
<100
<0.5
0.14 B
64.3
0.09 j
861
0.52
0.37 j,SI
0.41
AS-07I
Shallow
10/30/2018
15
0.37 j
3730
0.41
4.4
21.2
7030
<0.2
<0.5
2
0.025
6.3
2.2
13.1
0.78
0.1 j
22
344
<0.5
2.2
42.8
2.2
709
1.6
0.18 j,SI
10.2
Page 8 of 45

TABLE 3-3
2018 COMPREHENSIVE GROUNDWATER QUALITY DATA
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS LLC, MOORESBORO NC
Analytical Parameters
INORGANIC PARAMETERS (DISSOLVED CONCENTRATION WITH FILTER SIZE)
RADIONUCLIDES
OTHER PARAMETERS
Copper
Iron
Lead
Lithium
Manganese
Mercury
Molybdenum
Nickel
Phosphorus
Selenium
Strontium
Thallium
Vanadium
Zinc
Radium-226
Radium-228
Total
Radium
Uranium-238
Total Uranium
Uranium-238
(Dissolved)
Carbonate
Alkalinity
Fluoride
Phosphorus
Reporting Units
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
mg/L
ug/L
ug/L
ug/L
ug/L
ug/L
pCi/L
pCi/L
pCi/L
ug/mL
ug/mL
ug/mL
mg/L
mg/L
mg/L
15A NCAC 02L Standard
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
5^
NE
0.03^
NE
NE
2
NE
Background Threshold Values (Shallow Flow Zone)
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
2.58
NE
0.0005
NE
5
NE
NE
Background Threshold Values (Deep Flow Zone)
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
1.51
NE
0.0005
NE
5
NE
NE
Background Threshold Values (Bedrock Flow Zone)
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
3.1
NE
0.0005
NE
5
NE
NE
Sample ID
Sample Location
Aquifer Name
Sample
Collection Date
Analytical Results
AS-02BR
Bedrock
01/30/2018
<0.5
121
<0.1
NA
280
<0.2
12.3
2.2 Sl
<0.05
<0.5
166
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
0.14
<0.05
AS-02BR
Bedrock
04/30/2018
0.22 j,S1
85.9
<0.1
NA
352
<0.2
14.6
0.31 j,S1
<0.05
<0.5
199
<0.1
0.14 j,B,SI
<10
NA
NA
NA
0.0016
0.0016
0.0016
<5
0.12
<0.05
AS-02BR
Bedrock
08/01/2018
0.16 j,S1
108
0.13
NA
316
<0.2
14.5
2.7 S1
<0.05
<0.5
197
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
0.15
<0.05
AS-02BR
Bedrock
10/22/2018
0.16 j,S1
83.8
<0.1
NA
320
<0.2
13.3
0.61
0.034 j
<0.5
200
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
0.14
0.037 j
AS-02D
Deep
01/30/2018
<0.5
434
<0.1
NA
510
<0.2
0.83
16.4
<0.05
<0.5
342
<0.1
<0.3
10.4
0.465
0.709
1.174
<0.0005
<0.0005
NA
<5
<0.1
<0.05
AS-02D
Deep
04/30/2018
IA S3
412
0.77
NA
534
<0.2
1.3
7.7
<0.05
0.22j
378
<0.1
1.1S1
<10
0.671 U
0.9 U
1.57 U
0.00015j
0.00015j
0.00024j
<5
0.051j
0.041j
AS-02D
Deep
08/06/2018
0.32j
40.4j
<0.1
NA
138
<0.2
23.3
2.1
<0.05
1.4
606
<0.1
0.99
<10
0.779
0.571 U
1.35 U
0.00026j
0.00026j
0.00019j
<5
<0.1
0.028j
AS-02D
Deep
10/22/2018
0.37 j,S1
<50
<0.1
NA
235
<0.2
15.7
1.4
0.049j
0.92
641
<0.1
0.54 S1
<10
1.04
0.622 U
1.66
NA
0.00028j
NA
<5
0.067j
0.066
AS-02S
Shallow
01/30/2018
<0.5
<100 D3
0.16
NA
9280
<0.2
<0.5
2.3
<0.05
37
193
0.17
<0.3
<50 D3
0.75
0.0644
0.8144
<0.0005
<0.0005
NA
<5
0.11
<0.05
AS-02S
Shallow
04/30/2018
2.7 S1
<100 D3
0.53
NA
7460
<0.2
<0.5
4.8
<0.05
4.4
160
0.41
<0.3
8.8 j,D3
0.193 U
0.451 U
0.644 U
0.00015j
0.00015j
0.00015j
<5
0.12
<0.05
AS-02S
Shallow
08/01/2018
0.58 S1
<250
0.49
NA
9880
<0.2
<0.5
3.2 S1
<0.05
5.4
229
0.4
0.13 j,B
<50
0.159 U
0.684 U
0.843 U
0.00017j
0.00017j
0.00015j
<5
0.11
<0.05
AS-02S
Shallow
10/22/2018
2.9
<250
0.73 S1
NA
11000 D3
<0.2
<0.5
5.2
0.03 j
3.2
237 D3
0.5
<0.3
<50
0.296 U
0.624 U
0.92 U
NA
0.00017 j
NA
<5
0.082 j
0.027 j
AS-03BRU
Deep
01/31/2018
18.8 Sl
69.8
<0.1
NA
<5
<0.2
<0.5
0.55
<0.05
<0.5
18.6
<0.1
<0.3
26.1
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
AS-03BRU
Deep
05/04/2018
0.78
29.1 j
0.033 j
NA
4.6 j
<0.2
<0.5
0.39 j
<0.05
<0.5
19.4
0.066 j
0.29 j
3.1 j
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
AS-03BRU
Deep
08/06/2018
0.82
<50
0.057 j
NA
3.8 j
<0.2
0.53
0.56
<0.05
<0.5
19
0.061 j
<0.3
3.2 j
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
AS-03BRU
Deep
10/23/2018
3.7
51
0.17
NA
5.1
<0.2
0.99
1.8
<0.05
<0.5
19
0.05 j
<0.3
4.8 j
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
AS-04D
Deep
01/31/2018
0.68 Sl
<50
<0.1
NA
84
<0.2
1.4
4.9
<0.05
<0.5
38.5
<0.1
1.1
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
AS-04D
Deep
05/01/2018
0.48 j,S1
<50
0.12
NA
41
<0.2
0.38 j
8.9
<0.05
<0.5
27.7
<0.1
0.11 j
11.9
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
AS-04D
Deep
08/02/2018
11.8
<50
0.22 SI
NA
22.4
<0.2
12.3
6.6
<0.05
<0.5
27.9
<0.1
0.5
17.4
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
AS-04D
Deep
10/31/2018
0.35 j,S1
<50
<0.1
NA
37
<0.2
8.3
4.7
<0.05
<0.5
34.5
<0.1
0.31
7 j
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
AS-05BR
Bedrock
01/30/2018
<0.5
<50
<0.1
NA
5.8
<0.2
1.1
1.9
0.053
<0.5
56.3
<0.1
2.1
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
0.053
AS-05BR
Bedrock
04/30/2018
0.45 j,S1
<50
<0.1
NA
5j
<0.2
0.73
0.53 Sl
<0.05
<0.5
50
<0.1
1.8
<10
NA
NA
NA
0.000095j
0.000095j
0.000077j
<5
<0.1
0.036j
AS-05BR
Bedrock
07/30/2018
4.2 S1
<50
0.051 j,S1
NA
7
<0.2
3.7 S1
0.55 S1
0.04 j
<0.5
33.4
<0.1
0.74 S1
8.2 j
NA
NA
NA
NA
NA
NA
<5
<0.1
0.047 j
AS-05BR
Bedrock
10/24/2018
3.5
<50
<0.1
NA
6.8
<0.2
3
1.1S1
0.046 j
<0.5
32.2
<0.1
0.61
9 j,S1
NA
NA
NA
NA
NA
NA
<5
<0.1
0.05
AS-05BRU
Deep
01/30/2018
<0.5
<50
<0.1
NA
6.2
<0.2
<0.5
7.8
<0.05
<0.5
19.5
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
AS-05BRU
Deep
04/30/2018
0.49 j,S1
62.1
<0.1
NA
7.7
<0.2
0.25 j
4.8
<0.05
<0.5
20.8
<0.1
0.083 j,B,SI
<10
NA
NA
NA
<0.0005
<0.0005
<0.0005
<5
<0.1 MI
0.031 j
AS-05BRU
Deep
07/30/2018
1.8 Sl
<50
<0.1
NA
6.7
<0.2
1.5S1
0.55 Sl
0.033 j
<0.5
23.4
<0.1
0.15 j,S1
2.6 j
NA
NA
NA
NA
NA
NA
<5
<0.1 M1,R1
0.04 j
AS-05BRU
Deep
10/24/2018
IA Sl
<50
<0.1
NA
9.1
<0.2
2.2
1.4
0.045 j
<0.5
19.4
<0.1
<0.3
11.4 Sl
NA
NA
NA
NA
NA
NA
<5
<0.1
0.048 j
AS-05S
Shallow
02/02/2018
0.67
527
0.25
NA
11.9
<0.2
<0.5
4.8
<0.05
<0.5
8.3
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
AS-05S
Shallow
04/30/2018
0.3 j,S1
49.7 j,SI
0.082j,S1.
NA
9.7 Sl
<0.2
<0.5
0.36 j,S1
<0.05
<0.5
5.8
0.089 j
0.09 j,B,Sl
2.8 j
NA
NA
NA
<0.0005
<0.0005
<0.0005
<5
<0.1
<0.05
AS-05S
Shallow
07/30/2018
1.4 S1
<50
0.082 j,S1
NA
7
<0.2
0.3 j,S1
0.58 SI
<0.05
<0.5
7.7
0.068 j
<0.3
4.2 j
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
AS-05S
Shallow
10/24/2018
1.5 Sl
<50
<0.1
NA
7.6
<0.2
0.18 j
1
<0.05
<0.5
6.4
0.068 j
0.27 j
7.7 j,S1
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
AS-06BRA
Bedrock
01/31/2018
<0.5
93.2
<0.1
NA
50.6
<0.2
1.3
3.4
<0.05
<0.5
40.3
<0.1
1.1
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
AS-06BRA
Bedrock
05/01/2018
0.72 S3
44 j
<0.1
NA
21.1
<0.2
1.3
4.3
<0.05
<0.5
54.5
<0.1
0.89
7.9 j,B
NA
NA
NA
NA
NA
NA
<5
<0.1
0.048 j
AS-06BRA
Bedrock
08/02/2018
13.2
<50
<0.1
NA
37.7
<0.2
7.9
1.8 SS
0.026 j
<0.5
65.7
<0.1
0.7
15.3
NA
NA
NA
NA
NA
NA
<5
0.063 j
0.028 j
AS-06BRA
Bedrock
10/31/2018
11.7
<50
<0.1
NA
25.8
<0.2
4.1
2.1
0.028 j
<0.5
59.1
<0.1
0.62
16.1
NA
NA
NA
NA
NA
NA
<5
0.059 j
0.032 j
AS-06D
Deep
01/31/2018
7.4 S1
102
<0.1
NA
11.4
<0.2
0.74
10.8
<0.05
<0.5
30.1
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
AS-06D
Deep
05/01/2018
0.75 S3
47.3 j
0.04 j
NA
8
<0.2
0.15 j
1.3
<0.05
<0.5
26.4
<0.1
0.18 j
5.2 j,B
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
AS-06D
Deep
08/02/2018
3.6 Sl
<50
0.19 S1
NA
8.5
<0.2
1.7
3.9
<0.05
<0.5
29.6
<0.1
<0.3
3.8 j
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
AS-06D
Deep
10/31/2018
4.4
<50
<0.1
NA
7.5
<0.2
1.6
1
<0.05
<0.5
28.6
<0.1
0.14 j
5.1 j
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
AS-06S
Shallow
02/02/2018
0.7
129
<0.1
NA
118
<0.2
<0.5
5.3
<0.05
<0.5
11
0.11
<0.3
35.2
NA
NA
NA
NA
NA
NA
<5
<0.1 MI
<0.05
AS-06S
Shallow
05/07/2018
1.2 B
124
0.089 j
NA
102
<0.2
0.42 j
13.2
<0.05
<0.5
14.4
0.13
<0.3
42 B
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
AS-06S
Shallow
08/02/2018
4 Sl
<50
0.063 j,S1
NA
64.6
<0.2
5.4
4.8
<0.05
0.16 j
11.8
0.081 j
<0.3
35.6
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
AS-06S
Shallow
10/31/2018
2 S3
<50
<0.1
NA
42.8
<0.2
1.6
2.1
<0.05
<0.5
11.4
0.064 j
0.086 j
42.1
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
AS-07BRA
Bedrock
02/02/2018
<0.5
<50
<0.1
NA
<5
<0.2
<0.5
<0.5
<0.05
<0.5
847
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
472
0.25
<0.05
AS-07BRA
Bedrock
04/30/2018
7.5 S1
<50
0.14
NA
<5
<0.2
37.5
0.83 SI
<0.05
2.2
669
0.071j
24.2
<10
NA
NA
NA
0.0012
0.0012
0.00052
289
0.25
<0.05
AS-07BRA
Bedrock
08/03/2018
18.4
<50
0.35
NA
<5
<0.2
57
0.98
<0.05
2.1
817
0.056j
26.8
6.5j
NA
NA
NA
NA
NA
NA
322
0.25
<0.05
AS-07BRA
Bedrock
10/30/2018
18.8
<50
0.27
NA
<5
<0.2
52.6
0.92
0.035j
1.8
963
0.057j
23.5
4.7 j,S1
NA
NA
NA
NA
NA
NA
162
0.2
0.039j
AS-07D
Deep
01/29/2018
<0.5
<50
<0.1
NA
1290
<0.2
<0.5
5.2
<0.05
1.1
241
0.11
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
AS-07D
Deep
05/01/2018
0.3 j,S1
96.8
0.03 j
NA
1790
<0.2
0.18 j
8.2
<0.05
0.96
275
0.11
0.076 j
7.6 j
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
AS-07D
Deep
08/03/2018
1.5
<50
0.073j
NA
1770
<0.2
0.27j
5.8
0.028j
0.9
227
0.14
<0.3
10.1
NA
NA
NA
NA
NA
NA
<5
<0.1
0.032j
AS-07D
Deep
10/30/2018
1.3 S1
<50
<0.1
NA
1980
<0.2
0.73
15.2
<0.05
0.91
247
0.15
<0.3
9.3 j,SI
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
AS-07I
Shallow
10/30/2018
0.23 j,S1
2330
0.34
NA
6810
<0.2
<0.5
1.7
<0.05
2.2
178
0.75
0.079j
15.8 S1
NA
NA
NA
NA
NA
NA
<5
0.23
<0.05
Page 9 of 45

TABLE 3-3
2018 COMPREHENSIVE GROUNDWATER QUALITY DATA
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS LLC, MOORESBORO NC
Analytical Parameters
FIELD PARAMETERS
WATER QUALITY PARAMETERS
SELECTED 40CFR257 APPENDIX III CONSTITUENTS plus Sr
INORGANIC PARAMETERS (TOTAL CONCENTRATION)
pH
Water
Level
Temp
Spec
Cond
DO
ORP
Eh
Turbidity
Alkalinity
Bi-
carbonate
Alkalinity
Sulfide
Total
Organic
Carbon
Total
Suspended
Solids
Boron
Calcium
Chloride
Strontium
Sulfate
Total
Dissolved
Solids
Aluminum
Antimony
Arsenic
Barium
Beryllium
Cadmium
Chromium
(VI)
Chromium
Reporting Units
S.U.
ft
Deg C
umhos/cm
mg/L
mV
mV
NTUs
mg/L
mg/L
mg/L
mg/L
mg/L
ug/L
mg/L
mg/L
ug/L
mg/L
mg/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
15A NCAC 02L Standard
6.5-8.5
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
700
NE
250
NE
250
Soo
NE
1*
SO
700
4*
2
SO
10
Background Threshold Values (Shallow Flow Zone)
4.4-6.1
NE
NE
NE
NE
NE
NE
NE
13.67
14.42
0.1
1
NE
50
3.221
7.7
36.71
1.169
75.47
253
1
0.5
73.03
0.188
1
0.452
3.968
Background Threshold Values (Deep Flow Zone)
4.8-6.1
NE
NE
NE
NE
NE
NE
NE
19.74
18.13
0.1
1
NE
50
11
5.1
56.14
10
70.98
290
1
0.763
23
0.2
1
0.16
1.791
Background Threshold Values (Bedrock Flow Zone)
5.4-7.4
NE
NE
NE
NE
I NE
I NE
I NE
53
68.82
0.1
1
NE
50
16
8.656
107.1.
15.1
1.20
208.2
1
1
19.33
1
1
0.12
3.567
Sample ID
Sample Location
Aquifer Name
Sample
Collection Date
Analytical Results
AS-07S
Ash Pore Water
O1/29/2018
6.6
33.42
14
1311
0.30
-63
142
9.2
127
127
<0.1
<1
20.3
1290
174
37.3
3090
483
990
470
0.52
346
40.1
<0.1
0.088
<0.025
<0.5
AS-07S
Ash Pore Water
05/01/2018
6.4
30.59
25
1482
2.20
29
234
9.8
162
162
<0.1
0.54j
23.7
1440
251
29
3240
594
1270
69.2j
0.93
18.9
29.9
0.037j
0.25
<0.025
12.2
AS-07S
Ash Pore Water
08/06/2018
10.3
32.04
24
1209
0.10
-314
-109
6.6
152
152
<0.1
<1
19.2
1370
173
43.7
2530
453
947
161
0.33j
273
29.7
0.038j
0.068j
<0.025
3
AS-07S
Ash Pore Water
10/30/2018
6.5
32.14
19
1230
0.30
-90
115
7.9
142
142
<0.1
<1
3.9
1500
179
43.3
2580
431
972
70.2j
0.35j
335
29.7
0.044j
0.077j
0.025 S1
6.3
AS-08D
Deep
02/01/2018
6.7
33.20
12
599
0.40
-92
113
7.5
70.8
70.8
<0.1
<1
<2.6
707
58.8
33.8
292
151
398
<100
NA
NA
81.6
NA
NA
<0.025 M1
NA
AS-08D
Deep
04/27/2018
6.2
31.56
17
586
0.30
-52
154
2.3
51.8
51.8
<0.1
<1
<2.5
801
56.5
37.5
298
166
387
68.2j
0.16j
0.63 S1
101
<0.1
<0.08
<0.025
2.5 S1
AS-08D
Deep
08/03/2018
6.0
32.69
20
587
0.40
-200
5
1.4
33.1
33.1
<0.1
<1
<2.5
918
60.9
39.8
285
171
410
<100
<0.5
0.45
108
0.09j
<0.08
<0.025
1.3
AS-08D
Deep
10/24/2018
5.9
32.73
16
579
0.90
-8
197
2.3
28
28
<0.1
<1
<2.5
839
55.8
38.2
249
191
394
57.5j
0.28j
0.54
89.2
0.16
0.24
<0.025
1.2
AS-08S
Ash Pore Water
02/01/2018
6.9
20.23
12
470
0.50
27
232
9.3
217
217
<0.1
<1
10.4 D6
196
73 MI
3.3
1630
40.7
313
1390
NA
NA
195
NA
NA
0.23
NA
AS-08S
Ash Pore Water
04/27/2018
6.4
21.44
18
323
0.20
-66
139
7.8
129
129
<0.1
<1
10.7
96
32.3
2.7
861
20.7
194
258
<0.5
38.9
276
<0.1
0.074j
<0.025
4.2
AS-08S
Ash Pore Water
08/03/2018
6.7
25.50
20
451
0.50
46
251
9.9
201
201
<0.1
<1
6.8
186
68.9
2.5
1680
30.2
284
371
<0.5
24.8
333
<0.1
<0.08
0.072
0.26j
AS-08S
Ash Pore Water
10/24/2018
6.8
25.00
14
387
1.30
64
269
7.1
177
177
<0.1
0.64j
4.6
151
55.6
2.4
1420
26.9
245
210
<0.5
32.6
300
0.011j
<0.08
<0.025
0.36j
BG-01BRA
Bedrock
04/27/2018
12.1
29.37
19
2671
0.20
10
215
7.3
432
<5
<0.1
7.2
9.9
<50
30
4.1
1780
34.6
590
2230
2.4
0.86 S1
160
<0.1
<0.08
0.039 S1
0.98 S1
BG-01BRA
Bedrock
07/31/2018
11.7
30.20
22
1205
0.20
-225
-20
9.6
284
<5
<0.1
3.6
14.8
<50
22.9
3.9
1160
32
450
1610
1.2
0.43 S1
111
<0.1
<0.08
<0.025
0.47 j,S1
BG-01BRA
Bedrock
1O/25/2018
11.9
30.55
15
863
0.20
-253
-48
3.4
225
<5
<0.1
2.8
8.2 D6
<50
20.6
2.8 M1
925
23.7 M1
297
765
0.59
0.29
87.7
<0.1
<0.08
<0.025
0.24 j,S1
BG-0lD
Deep
01/29/2018
5.8
21.85
14
46
5.40
186
391
0.3
8.8
8.8
<0.1
<1
<2.5
<50
2.1
2.3
31
1.4
44 D6
<100
<0.5
<0.1
14.6
<0.1
<0.08
0.04 Sl
<0.5
BG-0lD
Deep
04/27/2018
5.8
26.55
17
47
3.70
289
494
1.1
8.7
8.7
<0.1
<1
<2.5
<50
2.09
2.2
32.2
1.1
47
<100
<0.5
<0.1
14.7
<0.1
<0.08
0.027 Sl
0.32 j,Sl
BG-0lD
Deep
07/31/2018
5.6
27.25
26
47
4.80
87
292
1.0
8.8
8.8
<0.1
<1
<2.5
<50
2.09
2.3
30.3
1.6
48
<100
<0.5
0.24 Sl
14.2
<0.1
<0.08
0.1 Sl
0.3 j,S1
BG-0lD
Deep
1O/25/2018
5.3
27.70
14
48
6.00
164
369
0.1
9.4
9.4
<0.1
<1
<2.5
<50
2
2.3
27.7
1.5
40
<100
<0.5
<0.1
13
<0.1
<0.08
0.035
0.09 j,51
BG-01S
Shallow
01/29/2018
5.1
29.18
14
39
6.90
13
218
5.4
<5
<5
<0.1
<1
<2.5
<50
0.681
3.9
15
<1
26
154
<0.5
<0.1
44.6
<0.1
<0.08
0.16 Sl
0.55 SI
BG-01S
Shallow
04/27/2018
5.1
26.90
15
52
3.90
155
360
0.1
2.5 j
2.5 j
<0.1
<1
<2.5
<50
0.978
6.1
24.8
<1
36
<100
<0.5
<0.1
86.8
0.08 j
<0.08
0.49 S1
2.6 S1
BG-015
Shallow
07/31/2018
4.9
27.40
25
55
5.40
213
418
9.4
2.5 j
2.5 j
<0.1
<1
3
<50
0.893
7.5
22.9
<1
40
288
<0.5
0.047 j,Sl
83.5
0.095 j
<0.08
0.14 Sl
0.48 j,S1
BG-01S
Shallow
1O/25/2018
4.7
27.90
14
50
7.10
238
443
0.1
2.1 j
2.1 j
<0.1
<1
<2.5
<50
0.76
6.2
17.6
<1
28
56.7 j
<0.5
<0.1
63.5
0.12
<0.08
0.21
0.33 j,S1
CCPMW-01D
Bedrock
02/01/2018
5.2
41.05
14
51
6.20
24
229
0.6
<5
<5
<0.1
<1
<2.5
<50
2.49
6.9
20.9
1.3
36
<100
NA
NA
15.8
NA
NA
0.062
NA
CCPMW-01D
Bedrock
05/04/2018
5.1
39.94
20
50
6.90
218
423
4.8
3.9 j
3.9 j
<0.1
<1
<5
<50
2.58
7.1
21 Sl
1.4
47
<100
<0.5
<0.1
14.9
<0.1
<0.08
0.058 S1
0.14 j,S1
CCPMW-01D
Bedrock
07/31/2018
5.2
37.00
22
50
5.50
87
292
1.7
4.9 j
4.9 j
<0.1
<1
<5
<50
2.52
7.7
21.9
1.2
48
70.8 j
<0.5
<0.1
15.9
<0.1
<0.08
0.077 S1
0.58 Sl
CCPMW-01D
Bedrock
11/O1/2018
5.2
37.53
23
54
5.40
175
380
1.0
4.8 j
4.8 j
<0.1
<1
<2.5
<50
2.6
7.2
23.8
1.2
48
<100
<0.5
<0.1
17.4
0.033 j
<0.08
0.057
0.3 j,B,BC,SI
CCPMW-Ols
Shallow
02/01/2018
5.5
37.73 Top of Pump
12
23
8.20
225
430
0.1
<5
<5
<0.1
<1
<5
<50
0.25
3.5
<5
<1
<25
122
NA
NA
24.3
NA
NA
0.45
NA
CCPMW-OlS
Shallow
05/04/2018
5.3
Top of Pump
27
27
0.30
108
313
1.3
<5
<5
<0.1
<1
<2.6
<50
0.214 SI
3.4
3.1 j,Sl
<1
47
<100
<0.5
<0.1
16.9
0.07 j
<0.08
0.29 SI
1 sl
CCPMW-01S
Shallow
07/31/2018
5.4
35.96
25
25
6.10
131
336
0.2
2.8 j
2.8 j
<0.1
<1
<5
<50
0.142
3.6
2.6 j
<1
<25
55.9 j
<0.5
<0.1
25.1
<0.1
<0.08
0.61 M1,S3
1.6 Sl
CCPMW-Ols
Shallow
11/O1/2018
6.6
Below Pump
19
21
0.10
113
318
1.8
1.1 j
1.1 j
<0.1
<1
<2.5
<50
0.13
3.5
<5
<1
<25
<100
<0.5
<0.1
18.6
0.058 j
<0.08
0.2 M1
0.71 B,BC,S1
CCR-03BR
Bedrock
02/06/2018
6.5
37.83
13
157
0.80
12
217
7.8
NA
NA
NA
NA
NA
89.5 CC
23.1 E
3.2
NA
8.3
NA
NA
0.18 j
0.65
7.1
<0.1
<0.08
NA
4.3
CCR-03BR
Bedrock
05/08/2018
6.2
37.15
29
142
0.80
13
218
9.2
56.5
NA
NA
NA
NA
5.1 sl
18.4
2.9
NA
7.6
118
NA
0.12 j
0.46
10.6
<0.1
<0.08
NA
14.8
CCR-04D
Deep
02/05/2018
5.4
23.35
12
105
4.20
203
408
5.9
NA
NA
NA
NA
NA
55.4 F5
8.37
9.1
NA
16.3
NA
NA
<0.5
0.18
18.3
0.038j
<0.08
NA
0.2j
CCR-04D
Deep
05/08/2018
5.7
23.10
19
102
4.90
-219
-14
5.0
8.8
NA
NA
NA
NA
45.8
7.1
7.8
NA
19.2
70
NA
<0.5
0.064 j
17.6
0.045 j
<0.08
NA
0.29 j,51
CCR-05D
Deep
02/05/2018
4.9
25.90
12
320
0.50
287
492
4.4
NA
NA
NA
NA
NA
119 FS,CC,AB
24.5 E
48.9
NA
48.2
NA
NA
<0.5
0.61
66
0.094j
0.11
NA
0.41j
CCR-05D
Deep
05/08/2018
5.5
25.35
17
165
1.00
-189
16
0.2
14.3
NA
NA
NA
NA
52.5
9.69
26.3
NA
20.5
115
NA
<0.5
0.15
37.7
0.051j
0.034j
NA
0.25 j,Sl
CCR-06D
Deep
02/05/2018
5.1
34.84
15
468
0.60
58
263
0.1
NA
NA
NA
NA
NA
1380 FS,CC,E,AB
35.7 E
44.5
NA
137 E
NA
NA
<0.5
0.25
67.3
0.24
0.18
NA
2.3
CCR-06D
Deep
05/08/2018
4.9
35.04
21
565
1.90
236
441
0.8
<5
NA
NA
NA
NA
1630
45.1
44.6
NA
183
390
NA
<0.5
2.1
60.8
0.45
0.35
NA
3.1
CCR-06S
Shallow
02/05/2018
4.4
34.51
14
1120
0.70
261
466
8.3
NA
NA
NA
NA
NA
1580 FS,CC,E,AB
213 E
25.8
NA
583 E
NA
NA
<0.5
2.6
22.9
1.2
0.43
NA
1.2
CCR-065
Shallow
05/08/2018
4.2
34.63
24
1155
1.20
134
339
1.7
<5
NA
NA
NA
NA
1520
172
27.2
NA
558
1000
NA
<0.5
10.2
32
1.7
1
NA
0.7 Sl
CCR-07D CAMA
Deep
01/30/2018
5.9
38.75
14
200
0.10
92
297
3.3
<5
<5
<0.1
<1
<2.5
613
11.6
29
140
33.7
131
<100
<0.5
<0.1
189
0.14
0.086
0.15 S1
<0.5
CCR-07D(Geochem Model)
Deep
06/12/2018
5.6
38.60
19
222
1.80
245
450
0.8
<5
<5
<0.1
0.113 51
<5
602
13.8
35
161
36
140
26
<1
<1
217
<1
<1
0.15
<1
CCR-07D CAMA
Deep
08/03/2018
5.6
38.58
25
224
0.50
87
292
0.5
3.5j
3.5j
<0.1
<1
<2.5
690
14.7
37
168
34
150
<100
<0.5
0.053j
223
0.15
0.094
0.16
0.25j
CCR-07D CAMA
Deep
10/25/2018
5.5
38.82
17
214
0.30
33
238
0.3
3j
3j
<0.1
<1
<2.5
585
13
35.2
142
34.5
126
<100
<0.5
0.058j
181
0.14
0.14
0.15
0.41 j,S1
CCR-07S CAMA
Shallow
01/30/2018
6.7
40.41
18
1443
0.20
34
239
1.3
277
277
<0.1
<1
<2.5
2730
258 M1
47.1
2650
501
1110
<100
<0.5
0.17 S1
54.6
<0.1
<0.08
0.072 S1
<0.5
CCR-07S(Geochem Model)
Shallow
06/12/2018
6.6
40.19
19
1517
2.38
267
472
5.6
312
312
<0.1
0.53 S1
<5
2750
273
50
2870
530
1100
99
<1
<1
59
<1
<1
0.28 P4,R0
1.03
CCR-07S CAMA
Shallow
08/03/2018
6.6
40.22
22
1505
0.70
86
291
2.0
263
263
<0.1
0.82j
<2.5
2980
225
52.8
2550
467
1180
<100
<0.5
0.15
56.1
<0.1
<0.08
0.028
0.17j
CCR-07S CAMA
Shallow
10/25/2018
6.5
40.78
17
1429
0.60
96
301
1.1
251
251
<0.1
0.85j
<2.5
2670
237
53.6
2260
454
1040
117
<0.5
0.1
47.9
<0.1
0.086
0.043
0.15 j,S1
CCR-08D(Geochem Model)
Deep
06/12/2018
5.2
37.46
20
866
1.11
125
330
0.1
<5
<5
<0.1
0.21 S1
<5
2260
137
75
1590
360
660
68
<1
<1
<1
0.03 P4,R0
<1
CCR-08D CAMA
Deep
09/14/2018
5.2
37.95
26
368
1.20
123
328
1.9
2.9j
2.9j
<0.1
<1
<2.6
1760
SOS
84.5 M6
1230
292 M6
609
<200
<0.5
Z34Z
0.077j
0.11
<0.025
0.25j
CCR-08D CAMA
Deep
10/31/2018
5.3
37.90
16
809
0.90
196
401
0.8
3.2j
3.2j
<0.1
<1
<5
1610
89.4 M1
86.6
1080 MS
263
620
<100
<0.5
0.065j
1.7
0.091
0.65 S1
CCR-09D
Deep
02/05/2018
5.0
20.52
14
1327
0.90
543
748
1.1
NA
NA
NA
NA
NA
13SO FS,CC,E,AB
196 E
30.2
NA
625 E
NA
NA
<0.5
0.36
0.13
NA
0.81
Page 10 of 45

TABLE 3-3
2018 COMPREHENSIVE GROUNDWATER QUALITY DATA
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS LLC, MOORESBORO NC
Analytical Parameters
INORGANIC PARAMETERS (TOTAL CONCENTRATION)
INORGANIC PARAMETERS (DISSOLVED CONCENTRATION WITH FILTER SIZE)
Cobalt
Copper
Iron
Lead
Lithium
Magnesium
Manganese
Mercury
Molybdenum
Nickel
Nitrate
+ Nitrite
Potassium
Selenium
Sodium
Thallium
Vanadium
Zinc
Aluminum
Antimony
Arsenic
Barium
Beryllium
Boron
Cadmium
Chromium
Cobalt
Reporting Units
ug/L
ug/L
ug/L
ug/L
ug/L
mg/L
ug/L
ug/L
ug/L
ug/L
mg-N/L
mg/L
ug/L
mg/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
15A NCAC 02L Standard
1*
1000
300
15
NE
NE
50
1
NE
100
NE
NE
20
NE
0.2*
0.3*
1000
NE
NE
NE
NE
NE
NE
NE
NE
NE
Background Threshold Values (Shallow Flow Zone)
10.65
6.569
765.3
1
NE
2.479
168.8
0.2
1
6.256
8.837
5
1
6.139
0.117
1.059
15
NE
NE
NE
NE
NE
NE
NE
NE
NE
Background Threshold Values (Deep Flow Zone)
9.041
9.453
559.7
1
NE
1.6
78.31
0.2
1
12.56
2.8
5
1
4.41
0.063
1.095
15.03
NE
NE
NE
NE
NE
NE
NE
NE
NE
Background Threshold Values (Bedrock Flow Zone)
1.497
5
6220
1
NE
2.328
89.4
0.2
1.716
5
0.92
5
1
1 7.42
0.1
0.37
10
NE
NE
NE
NE
NE
NE
I NE
NE
NE
Sample ID
Sample Location
Aquifer Name
Sample
Collection Date
Analytical Results
AS-07S
Ash Pore Water
01/29/2018
2.2
<0.5
39400
<0.1
51.6
41.8
15900
<0.2
5.5
4.6
0.073 Sl
21.6
0.54
15.4
0.97 S3
1.4
<10
268
0.54
506
43.4
<0.1
1250
<0.08
<0.5
2.2
AS-07S
Ash Pore Water
05/01/2018
4.6
0.6 Sl
1870
<0.1
119
48
11300
<0.2
2.8
26.5
0.072
27
5.1
20.2
2.4
0.43 S3
29.6
<100 M1,R1
0.92
5.2
28.7 RI
<0.1
1400 MI
0.25
1.1
4.6
AS-07S
Ash Pore Water
08/06/2018
1.9
0.15 j
35800
<0.1
57.9
35.8
13000
<0.2
6.8
3.8
0.036
19.4
0.14 j
14.6
0.68
1.1
19.4 B
<1000
0.33 j
266
260
0.046 j
13000
0.038 j
0.3 j
1.9
AS-07S
Ash Pore Water
10/30/2018
1.7
0.43 j
36300
<0.1
55
36.4
12600
<0.2
7.3
6.6
<0.02
20.4
<0.5
15
0.66
0.61
10.1
<100
0.33 j
325
26.2
0.032 j
1380
0.061 j
0.49 j,S1
1.7
AS-08D
Deep
02/01/2018
NA
NA
9370
NA
NA
16.5
4950 M1
<0.2 MI
NA
NA
0.032
13
NA
17
NA
NA
<10 B
<100
NA
NA
85
NA
672
NA
NA
NA
AS-08D
Deep
04/27/2018
3.1
0.29 j,S1
6680
0.048 j
4.2
18.6
4630
<0.2
2
2.7
0.022
11.2
0.83
15.4
<0.1
0.17 j,S1
3.4 j
58.6 j
0.14 j
0.5
89
<0.1
689
<0.08
2.9
3.8
AS-08D
Deep
08/03/2018
4
0.4 j
2980
0.076 j
3.3
21.4
5030
<0.2
3.1
3.5
<0.02
11.6
1.2
16.7
<0.1
0.1 j
7 j
<100
<0.5
0.37
87.8
0.15
695
<0.08
0.44 j
3.9
AS-08D
Deep
10/24/2018
4.2
0.55 SI
1770
0.095 j
3.9
20.2
4470
<0.2
2.1
4.7
0.037 Sl
9.3
1.6
14.2
<0.1
<0.3
11.8
<100
<0.5
0.37
83.8
0.15
733
0.2
0.33 j,S1
3.4
AS-08S
Ash Pore Water
02/01/2018
NA
NA
1110
NA
NA
12.9
1780
<0.2
NA
NA
0.15
7.08
NA
5.63
NA
NA
<10 B
466
NA
NA
174
NA
201
NA
NA
NA
AS-08S
Ash Pore Water
04/27/2018
5.9
0.63 Sl
13800
0.088 j
4.9
7.16
2800
<0.2
3.1
4.8
0.033
5.56
<0.5
3.72 j
0.32
0.24 j,S1
8.6 j
<100
<0.5
29.7
228
<0.1
87.8
0.092
2.4
5.8
AS-08S
Ash Pore Water
08/03/2018
0.84
0.33 j
1510
0.14
6.2
12.4
2930
<0.2
5.9
0.95 B
0.16
9.36
0.2 j
5.52
0.19
0.71
2.5 j
50.3 j
<0.5
6.2
270
<0.1
151
<0.08
<0.5
0.87
AS-08S
Ash Pore Water
10/24/2018
0.53
0.38 j,S1
1140
0.14
8.4
10.8
4200
<0.2
5
1.2
0.18
8.1
0.32 j
4.8 j
0.21
1 B
3.6 j
<100
<0.5
7.8
265
<0.1
134
<0.08
<0.5
0.5
BG-01BRA
Bedrock
04/27/2018
0.18
1.2 S1
497
0.088j
351
0.572
34.5
<0.2
11.6
1.3 S1
0.028
157
0.24j
95.3
0.036j
2.4
<10
1330
2
0.76
107
<0.1
<50
<0.08
0.15 j,S1
0.031j
BG-01BRA
Bedrock
07/31/2018
0.35
1.2
1060
0.14
218
0.855
44.1
<0.2
9.9
1.1
0.1
99.4
0.29 j
63
<0.1
1.6
<10
753
1
0.31 SI
87.7
<0.1
<50
<0.08
<0.5
0.023 j
BG-01BRA
Bedrock
10/25/2018
0.21
0.41 j
705
<0.1
171
0.92
58.6
<0.2
5.6
0.75
0.095 SI
65.7
<0.5
42.7
0.019 j
0.85
2.5 j
476
0.47 j
0.24
78.2
<0.1
<50
<0.08
0.16 j
0.053 j,S1
BG-01D
Deep
01/29/2018
0.64
1.5 Sl
<50
0.34 S3
1.8
1
17.3
<0.2
<0.5
2.1
1.5
<5
<0.5
<5
<0.1
<0.3
<10
<100
<0.5
<0.1
14.4
<0.1
<50
<0.08
<0.5
0.5
BG-01D
Deep
04/27/2018
0.45
1.2 S1
<50
0.08 j
1.8
0.956
9.6
<0.2
<0.5
1.8
1.5
<5
<0.5
3.82 j
<0.1
0.073 j,S1
<10
<100
<0.5
<0.1
12.9
<0.1
<50
<0.08
<0.5
0.4
BG-01D
Deep
07/31/2018
0.63
1.3
<50
0.17
1.7
0.938
13.4
<0.2
<0.5
2.2
1.5
<5
<0.5
3.9 j
<0.1
0.074 j
3 j
95.5 j
<0.5
0.13 Sl
13.4
<0.1
<50
<0.08
0.17 j
0.48
BG-01D
Deep
10/25/2018
0.46
1.1
<50
<0.1
1.8 j
0.91
9.8
<0.2
<0.5
1.8
1.5
<5
<0.5
3.5 j
<0.1
<0.3
4.4 j
<100
<0.5
<0.1
13.4
<0.1
<50
<0.08
<0.5
0.4
BG-01S
Shallow
01/29/2018
0.54
<0.5
252
<0.1
1.4
0.873
14.5
<0.2
<0.5
0.58
1.3
<5
<0.5
<5
<0.1
<0.3
<10
<100
<0.5
<0.1
38.9
<0.1
<50
<0.08
<0.5
0.53
BG-01S
Shallow
04/27/2018
1.6
0.84 S1
<50
<0.1
1.6
1.57
29.4
<0.2
<0.5
2.9
2
2.58 j
<0.5
3.64 j
0.09 j
0.13 j,S1
5.1 j,B
<100
<0.5
<0.1
72.5
0.15
<50
<0.08
4.4
1.5
BG-01S
Shallow
07/31/2018
1.5
0.55
375
0.061 j
1.6
1.5
24.6
<0.2
<0.5
0.87
2.1
2.6 j
<0.5
4.01 j
0.077 j
<0.3
6.8 j
54 j
<0.5
<0.1
77.7
0.081 j
<50
<0.08
0.28 j,B
1.4
BG-01S
Shallow
10/25/2018
1.1
<0.5
57.2
0.091 j
1.6 j
1.2
16.9
<0.2
<0.5
0.67
1.7
<5
<0.5
3.6 j
0.075 j
0.094 j
5.2 j
<100
<0.5
<0.1
59.9
0.095 j
<50
<0.08
0.72
1
CCPMW-01D
Bedrock
02/01/2018
NA
NA
<50
NA
NA
1.43
8 Sl
<0.2
NA
NA
0.96
<5
NA
<5
NA
NA
<10
<100
NA
NA
14.2
NA
<50
NA
NA
NA
CCPMW-01D
Bedrock
05/04/2018
0.38
0.22 j
<50
<0.1
1.1
1.43
6.6
<0.2
<0.5
0.96 SI
0.81
<5
<0.5
2.83 j
0.029 j
0.095 j,S1
<10
<100
<0.5
0.048 j
15.4
<0.1
<50
<0.08
0.17 j
0.38
CCPMW-01D
Bedrock
07/31/2018
0.37
0.42 j
70.6
0.061 j
1.1
1.36
7.9
<0.2
<0.5
1.1
0.78
<5
<0.5
2.76 j
<0.1
<0.3
<10
<100
<0.5
<0.1
14.9
<0.1
<50
<0.08
0.64 B
0.32
CCPMW-01D
Bedrock
11/01/2018
0.35
0.23 j,B
<50
<0.1
1.2 j
1.5
7.6
<0.2
<0.5
1.2
1
<5
<0.5
2.8 j
<0.1
<0.3
3.3 j
108
<0.5
<0.1
17.6
0.037 j
<50
<0.08
0.15 j,S1
0.33
CCPMW-01S
Shallow
02/01/2018
NA
NA
99.6
NA
NA
0.734
36.6
<0.2
NA
NA
0.19
<5
NA
<5
NA
NA
<10
<100
NA
NA
14.6
NA
<50
NA
NA
NA
CCPMW-01S
Shallow
05/04/2018
1.5
0.2 j
34.7 j
3.4
1.8
0.672
19.6
<0.2
<0.5
0.9 S1
0.11
<5
<0.5
1.39 j
0.035 j
<0.3
<10
<100
<0.5
<0.1
19.2
0.069 j
<50
<0.08
0.2 j
1.8
CCPMW-01S
Shallow
07/31/2018
1.7
0.33 j
39.6 j
0.083 j
1.9
0.56
30.7
<0.2
0.078 j
1.1
4.3
<5
<0.5
1.58 j
0.03 j
<0.3
<10
<100
<0.5
<0.1
23.7
<0.1
<50
<0.08
1.5 B
1.6
CCPMW-01S
Shallow
11/01/2018
1.4
0.41 j,B
34.5 j
<0.1
1.8 j
0.61
15.1
<0.2
<0.5
0.66
0.029
<5
<0.5
1.3 j
0.015 j
0.091 j
4 j
<100
<0.5
<0.1
18.8
0.053 j
<50
<0.08
0.45 j,S1
1.2
CCR-03BR
Bedrock
02/06/2018
0.7
NA
NA
0.033 j
3.8
1.86
NA
<0.2
0.69
NA
NA
3.33
<0.5
4.86
<0.1
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
CCR-03BR
Bedrock
05/08/2018
1
NA
NA
0.057 j
3.1
1.93
NA
<0.2
0.79
NA
NA
2.66
<0.5
5.02
<0.1
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
CCR-04D
Deep
02/05/2018
0.84
NA
NA
<0.1
1.1
3.31
NA
0.07 j
<0.5
NA
NA
0.733
2.1
5.08
0.06 j
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
CCR-04D
Deep
05/08/2018
0.78
NA
NA
0.031 j
0.87
3.57
NA
<0.2
<0.5
NA
NA
0.893
2.1
4.96
0.077 j
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
CCR-051)
Deep
02/05/2018
9.3
NA
NA
0.041j
1.8
11.4
NA
0.47
<0.5
NA
NA
1.15
3.4
10.4
0.054j
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
CCR-05D
Deep
05/08/2018
14
NA
NA
0.035 j
1.9
6.12
NA
0.16 j
<0.5
NA
NA
1.76
0.56
10.5
0.075 j
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
CCR-06D
Deep
02/05/2018
4.8
NA
NA
<0.5 D3
3.6
20.9
NA
0.09 j
0.096 j
NA
NA
11.3
7.1
11.8
0.28 j,D3
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
CCR-06D
Deep
05/08/2018
6.5
NA
NA
0.23
4.5
25.6
NA
<0.2
0.092 j
NA
NA
12.4
2
12.8
0.51
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
CCR-06S
Shallow
02/05/2018
76.4
NA
NA
1.1 j,D3
9.4
26.7 E
NA
<0.2
<0.5
NA
NA
15.3
64
9.04
<2 D3,51
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
CCR-06S
Shallow
05/08/2018
147
NA
NA
1.2
11
36.3
NA
<0.2
<0.5
NA
NA
16.5
46
9.24
0.6
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
CCR-07D CAMA
Deep
01/30/2018
<0.1
<0.5
<50
<0.1
1
3.18
87.1
<0.2
<0.5
<0.5
<0.02
7.58
0.74
13
0.23
<0.3
<10
<100
<0.5
<0.1
158
0.12
520
0.08
<0.5
<0.1
CCR-07D(Geochem Model)
Deep
06/12/2018
<1
<1
22
<1
<5
3.91
108
0.07
<1
<1
0.0065j
8.5
0.739j
13.6
0.256
0.237j
3.919j
4.182j
<1
<1
205
<1
607
<1
<1
<1
CCR-07D LAMA
Deep
08/03/2018
0.062 j
0.31 j
25.6 j
<0.1
1.1
4.14
109
<0.2
<0.5
0.14 j,B
<0.02
9.34
0.6
15.2
0.24
<0.3
<10
<100
<0.5
0.061 j
180
0.16
554
0.12
0.32 j
0.057 j
CCR-07D CAMA
Deep
10/25/2018
0.067 j
<0.5
<50
<0.1
1.2 j
3.5
93
0.09 j
<0.5
<0.5
0.031 Sl
7.4
0.62
12.7
0.26
<0.3
3.3 j
<100
<0.5
<0.1
174
0.14
553
0.13
0.27 j
0.067 j,S1
CCR-07S CAMA
Shallow
01/30/2018
2.5
<0.5
<50
<0.1
<0.5
35.2
4890
<0.2
3.7
0.52 S3
0.056
14.2
2.2
20.5
0.4
<0.3
<10
<100
<0.5
0.22
44.8
<0.1
2280
<0.08
<0.5
3
CCR-07S(Geochem Model)
Shallow
06/12/2018
3.01
<1
64
<1
<5
43.3
5560
<0.05
4.11
0.589j
0.077
16.7
2.04
21.6
0.429
0.204j
2.447j
2.873j
<1
<1
58
<1
2760
<1
<1
3
CCR-07S CAMA
Shallow
08/03/2018
2.8
0.15 j
<50
0.083 j
<0.5
38.8
5720
<0.2
3.3
0.62 B
0.14
18.3
3.4
22.1
0.4
0.074 j
2.9 j
51.9 j
<0.5
0.17
49
<0.1
2500
<0.08
<0.5
2.9
CCR-07S CAMA
Shallow
10/25/2018
2.7
0.15 j
51
0.14
0.42 j
34.8
4990
<0.2
2.7
0.55
0.098 Sl
j 14.8
1.8
18.8
0.48
<0.3
4.2 j
<100
<0.5
0.097 j
47
0.018 j
2530
0.09
0.17 j
2.5
CCR-08D(Geochem Model)
Deep
06/12/2018
206
0.681j
5.114j
<1
4.306j
9.32
9910
<0.05
<1
21.4
<0.01
8.66
2.14
13.2
1.28
<0.3
32
69
<1
6.72
56
<1
2360
<1
<1
206
CCR-08D CAMA
Deep
09/14/2018
189
31.9
<100
1.3
3.1
6.72
7430
<0.2
<0.5
19.2
0.034
6.7 j
6.3
10.4
1.2
0.069 j
24.1 B
<200
<0.5
5.6
37.1
0.086 j
1680 M1
0.13
0.23 j
180
CCR-08D CAMA
Deep
10/31/2018
193 M1
2.2
<50
0.091 j
4.7 S3
6.1 M1
6640 M1
<0.2
<0.5
19.7
0.011 j,S1
6.2
3
9.4 M1
1.2
<0.3
22.5 M1
<200
<0.5
6.4
41.2
0.057 j
1840
1.6
0.13 j,Sl
206
CCR-09D
Deep
02/05/2018
170
NA
NA
0.17 j,D3
2.1
34.8 E
NA
0.07 j
<0.5
NA
NA
3.5
31.4
18.4
<0.5 D3
NA
NA
NA
I NA
NA
NA
NA
NA
NA
NA
NA
Page 11 of 45

TABLE 3-3
2018 COMPREHENSIVE GROUNDWATER QUALITY DATA
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS LLC, MOORESBORO NC
Analytical Parameters
INORGANIC PARAMETERS (DISSOLVED CONCENTRATION WITH FILTER SIZE)
RADIONUCLIDES
OTHER PARAMETERS
Copper
Iron
Lead
Lithium
Manganese
Mercury
Molybdenum
Nickel
Phosphorus
Selenium
Strontium
Thallium
Vanadium
Zinc
Radium-226
Radium-228
Total
Radium
Uranium-238
Total Uranium
Uranium-238
(Dissolved)
Carbonate
Alkalinity
Fluoride
Phosphorus
Reporting Units
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
mg/L
ug/L
ug/L
ug/L
ug/L
ug/L
pCi/L
pCi/L
pCi/L
ug/mL
ug/mL
ug/mL
mg/L
mg/L
mg/L
15A NCAC 02L Standard
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
5^
NE
0.03^
NE
NE
2
NE
Background Threshold Values (Shallow Flow Zone)
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
2.58
NE
0.0005
NE
5
NE
NE
Background Threshold Values (Deep Flow Zone)
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
1.51
NE
0.0005
NE
5
NE
NE
Background Threshold Values (Bedrock Flow Zone)
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
3.1
NE
0.0005
NE
5
NE
NE
Sample ID
Sample Location
Aquifer Name
Sample
Collection Date
Analytical Results
AS-07S
Ash Pore Water
01/29/2018
0.65
37200
0.2
NA
15100
<0.2
5.7
4.6
0.14
0.74
2720
0.93
2.3
<10
0.538
0.685
1.223
0.0013
0.0013
NA
<5
0.18
0.07
AS-07S
Ash Pore Water
05/01/2018
0.65 S1
996 111,111
<0.1
NA
9870 M1
<0.2
2.5
28.6
<0.05
4.2
2970
2.4
0.5
32.8 R1
0.124 U
0.276 U
0.4 U
0.0049
0.0049
0.0048
<5
0.21
<0.05
AS-07S
Ash Pore Water
08/06/2018
0.14j
331000
<0.1
NA
11800
<0.2
6.7
3.5
0.037j
<0.5
22000
0.68
0.27j
190
0.117 U
-0.0099 U
0.117 U
0.0023
0.0023
0.0023
<5
0.24
0.041j
AS-07S
Ash Pore Water
10/30/2018
<0.5
32500
<0.1
NA
11700
<0.2
7
6.9
0.07
<0.5
2410
0.64
0.41
6.7 j,S1
NA
NA
NA
NA
NA
NA
<5
0.26
0.078
AS-08D
Deep
02/01/2018
NA
4650
NA
NA
4240
<0.2
NA
NA
<0.05
NA
241
NA
NA
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
AS-08D
Deep
04/27/2018
0.23 j,S1
3920
0.04j
NA
3940
<0.2
2
3.9
<0.05
1.5
243
<0.1
0.12j,S1
4.2j
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
AS-08D
Deep
08/03/2018
<0.5
1320
<0.1
NA
3960
<0.2
1.9
3.4
<0.05
2
237
<0.1
0.063 j
7.5 j
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
AS-08D
Deep
10/24/2018
0.24 j,S1
843
<0.1
NA
4030
<0.2
1.3
4.1
<0.05
1.8
230
<0.1
<0.3
19 S1
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
AS-08S
Ash Pore Water
02/01/2018
NA
379
NA
NA
1560
<0.2
NA
NA
<0.05
NA
1370
NA
NA
<10
NA
NA
NA
NA
NA
NA
<5
0.2
<0.05
AS-08S
Ash Pore Water
04/27/2018
0.44 j,S1
11700
<0.1
NA
2450
<0.2
3.3
6.5
<0.05
0.23 j
699
0.31
0.14 j,S1
7.2 j
NA
NA
NA
NA
NA
NA
<5
0.15
<0.05
AS-08S
Ash Pore Water
08/03/2018
0.36j
396
<0.1
NA
2430
<0.2
6.2
0.81
<0.05
0.18j
1500
0.19
0.27j
<10
NA
NA
NA
NA
NA
NA
<5
0.34
<0.05
AS-08S
Ash Pore Water
10/24/2018
0.65 S1
185
<0.1
NA
3830
<0.2
4.8
1.1
<0.05
<0.5
1260
0.19
0.38
5.8 j,S1
NA
NA
NA
NA
NA
NA
<5
0.21
<0.05
BG-01BRA
Bedrock
04/27/2018
0.39 j,S1
<50
<0.1
NA
<5
<0.2
9
1.4
<0.05
0.23j
1250
<0.1
1.6
<10
NA
NA
NA
NA
NA
NA
378
0.092j
0.031j
BG-01BRA
Bedrock
07/31/2018
0.64 S1
<50
0.053j
NA
<5
<0.2
8.7
1.9
0.052
0.25j
968
<0.1
0.72
<10
NA
NA
NA
NA
NA
NA
130
0.24
0.12
BG-01BRA
Bedrock
10/25/2018
0.31 j,51
124
<0.1
NA
10.8
<0.2
5
0.75
0.062
<0.5
855
<0.1
0.38
<10
NA
NA
NA
NA
NA
NA
104
0.18 M1
0.12
BG-01D
Deep
01/29/2018
1.5
<50
<0.1
NA
10.7
<0.2
<0.5
1.9
<0.05
<0.5
30.7
<0.1
<0.3
<10
0
0.448
0.448
<0.0005
<0.0005
NA
<5
<0.1
<0.05
BG-01D
Deep
04/27/2018
1.8 sl
<50
0.078 j
NA
8.5
<0.2
<0.5
1.7
<0.05
<0.5
27.6
<0.1
0.098 j,S1
<10
0.277 U
0.623 U
0.9 U
<0.0005
<0.0005
<0.0005
<5
<0.1
<0.05
BG-01D
Deep
07/31/2018
1.5
78.7
0.086 j
NA
9.4
<0.2
<0.5
1.9
<0.05
<0.5
28.9
<0.1
0.069 j
3.4 j,B
0.589 U,D6
0.75 U
1.34 U
<0.0005
<0.0005
<0.0005
<5
<0.1
0.026 j
BG-01D
Deep
10/25/2018
1.8
<50
<0.1
NA
8.9
<0.2
<0.5
1.7
0.031 j
<0.5
28.4
<0.1
0.084 j
3.6 j
0.566 U
0.731
1.3 U
NA
<0.0005
NA
<5
<0.1
0.033 j
BG-01S
Shallow
01/29/2018
<0.5
<50
<0.1
NA
10.6
<0.2
<0.5
0.83 SI
<0.05
<0.5
13.1
<0.1
<0.3
<10
0
0.669
0.669
<0.0005
<0.0005
NA
<5
<0.1
<0.05
BG-01S
Shallow
04/27/2018
IA SI
27.9 j
<0.1
NA
24.5
<0.2
<0.5
5.6
<0.05
<0.5
20.9
0.09 j
0.088 j,S1
4.2 j
0.0818 U
0.776 U
0.858 U
<0.0005
<0.0005
<0.0005
<5
<0.1
<0.05
BG-01S
Shallow
07/31/2018
0.68 SI
<50
<0.1
NA
20.1
<0.2
<0.5
0.75 B
<0.05
<0.5
21.7
0.071 j
<0.3
4.7 j,B
0.132 U
0.472 U
0.604 U
<0.0005
<0.0005
<0.0005
<5
<0.1
<0.05
BG-01S
Shallow
10/25/2018
IA 51
<50
<0.1
NA
15.9
<0.2
<0.5
1.1
<0.05
<0.5
17
0.071 j
0.12 j
4 j
-0.09 U
0.291 U
0.291 U
NA
<0.0005
NA
<5
<0.1
<0.05
CCPMW-01D
Bedrock
02/01/2018
NA
<50
NA
NA
7.3
<0.2
NA
NA
<0.05
NA
20.3
NA
NA
<10
0.223
0.49
0.713
NA
NA
NA
<5
<0.1
<0.05
CCPMW-01D
Bedrock
05/04/2018
1.7
<50
<0.1
NA
7.1
<0.2
<0.5
1
<0.05
<0.5
21.5
<0.1
<0.3
3.2 j
0.127 U
0.391 U
0.518 U
<0.0005
<0.0005
<0.0005
<5
<0.1 MI
<0.05
CCPMW-01D
Bedrock
07/31/2018
0.46 j,S1
<50
0.057 j
NA
6.3
<0.2
<0.5
1.3 B
<0.05
<0.5
20.5
<0.1
<0.3
<10 P8
0.127 U
0.402 U
0.529 U
<0.0005
<0.0005
<0.0005
<5
<0.1
<0.05
CCPMW-01D
Bedrock
11/01/2018
2.4 S1
<50
<0.1
NA
7.6
<0.2
<0.5
1
<0.05
<0.5
23.8
<0.1
<0.3
5.5 j
0.244 U
0.617 U
0.861 U
NA
<0.0005
NA
<5
<0.1
<0.05
CCPMW-01S
Shallow
02/01/2018
NA
<50
NA
NA
17.5
<0.2
NA
NA
<0.05
NA
<5
NA
NA
<10
0.163
-0.00925
0.15375
NA
NA
NA
<5
<0.1
<0.05
CCPMW-01S
Shallow
05/04/2018
4.8
<50
0.041 j
NA
22.4
<0.2
<0.5
1.8
<0.05
<0.5
4.4 j
0.034 j
<0.3
4.9 j
0 U
0.0236 U
0.0236 U
<0.0005
<0.0005
<0.0005
<5
<0.1
<0.05
CCPMW-01S
Shallow
07/31/2018
2.5
<50
0.074 j
NA
26.1
<0.2
0.07 j
1.3 B
<0.05
<0.5
2.7 j
0.027 j
<0.3
4.2 j,B
0.432 U
0.844
1.28 U
<0.0005
<0.0005
<0.0005
<5
<0.1
<0.05
CCPMW-01S
Shallow
11/01/2018
0.85 SI
<50
<0.1
NA
14.1
<0.2
<0.5
<0.5
<0.05
<0.5
<5
<0.1
<0.3
3 j
-0.167 U
0.327 U
0.327 U
NA
<0.0005
NA
<5
<0.1
<0.05
CCR-03BR
Bedrock
02/06/2018
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
0.65
0.513
1.163
NA
NA
NA
NA
<0.1 MI
NA
CCR-03BR
Bedrock
05/08/2018
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
0.238 U
0.526 U
0.764 U
NA
NA
NA
NA
<0.1
NA
CCR-04D
Deep
02/05/2018
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
0.185
0.046
0.231
NA
NA
NA
NA
<0.1
NA
CCR-04D
Deep
05/08/2018
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
0.123 U
0.247 U
0.37 U
NA
NA
NA
NA
<0.1
NA
CCR-051)
Deep
02/05/2018
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
0.367
0.333
0.7
NA
NA
NA
NA
<0.1
NA
CCR-05D
Deep
05/08/2018
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
0.278 U
0.166 U
0.444 U
NA
NA
NA
NA
<0.1 MI
NA
CCR-06D
Deep
02/05/2018
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
0.3
0.381
0.681
NA
NA
NA
NA
0.076 j
NA
CCR-06D
Deep
05/08/2018
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
0.374 U
0.906
1.28 U
NA
NA
NA
NA
0.079 j
NA
CCR-06S
Shallow
02/05/2018
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
0.14
3.22
3.36
NA
NA
NA
NA
0.57
NA
CCR-06S
Shallow
05/08/2018
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
0.718 S1,B
3.91
4.63
NA
NA
NA
NA
0.93
NA
CCR-07D CAMA
Deep
01/30/2018
<0.5
<50
<0.1
NA
73.2
<0.2
<0.5
<0.5
<0.05
0.69
119
0.24
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
CCR-07D(Geochem Model)
Deep
06/12/2018
<1
5.275j
<1
2.16j
100
0.036j
<1
<1
<0.05
0.688j
152
0.228
0.238j
3.485j
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
CCR-07D LAMA
Deep
08/03/2018
0.62
<50
<0.1
NA
86.1
<0.2
<0.5
0.18 j
<0.05
0.64
140
0.24
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
CCR-07D CAMA
Deep
10/25/2018
1 51
<50
<0.1
NA
84.9
<0.2
<0.5
<0.5
<0.05
0.62
138
0.24
<0.3
2.5 j
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
CCR-07S CAMA
Shallow
01/30/2018
<0.5
<50
<0.1
NA
4120
<0.2
4.2
0.52
<0.05
2.4
2240
0.47
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
CCR-07S(Geochem Model)
Shallow
06/12/2018
<1
3.395j
<1
2.366j
5530
<0.05
4.04
0.368j
<0.05
2.04
2740
0.441
0.159j
3.394j
NA
NA
NA
NA
NA
NA
<5
0.47j
<0.05
CCR-07S CAMA
Shallow
08/03/2018
0.27j
<50
0.065j
NA
5020
<0.2
3.4
0.69
<0.05
3.4
2410
0.43
0.085j
<10
NA
NA
NA
NA
NA
NA
<5
0.095j
<0.05
CCR-07S CAMA
Shallow
10/25/2018
1.5
<50
<0.1
NA
4580
<0.2
2.6
0.56
<0.05
2.5
2160
0.44
<0.3
4.2j
NA
NA
NA
NA
NA
NA
<5
0.097j
<0.05
CCR-08D(Geochem Model)
Deep
06/12/2018
1.23
3.861j
<1
5
10000
<0.05
<1
21.7
<0.05
2.06
1600
1.13
0.111j
36
NA
NA
NA
NA
NA
NA
<5
<1
<0.05
CCR-08D LAMA
Deep
09/14/2018
2.1
<100
0.084 j
NA
7140 MI
<0.2
<0.5
18.4
<0.05
5.9
1150 M1
1.2
<0.3
23.2 M1
0 U
0.29 U
0.29 U
<0.0005
<0.0005
NA
<5
0.073 j,M 1, R1
<0.05
CCR-08D CAMA
Deep
10/31/2018
1.7 SI
<100
<0.1
NA
7810
<0.2
<0.5
20.2
<0.05
3.7
1230
1.2
<0.3
33.2
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
CCR-09D
Deep
02/05/2018
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
0.491
0.852
1.343
NA
NA
NA
NA
0.22
NA
Page 12 of 45

TABLE 3-3
2018 COMPREHENSIVE GROUNDWATER QUALITY DATA
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS LLC, MOORESBORO NC
Analytical Parameters
FIELD PARAMETERS
WATER QUALITY PARAMETERS
SELECTED 40CFR257 APPENDIX III CONSTITUENTS plus Sr
INORGANIC PARAMETERS (TOTAL CONCENTRATION)
pH
Water
Level
Temp
Spec
Cond
DO
ORP
Eh
Turbidity
Alkalinity
Bi-
carbonate
Alkalinity
Sulfide
Total
Organic
Carbon
Total
Suspended
Solids
Boron
Calcium
Chloride
Strontium
Sulfate
Total
Dissolved
Solids
Aluminum
Antimony
Arsenic
Barium
Beryllium
Cadmium
Chromium
(VI)
Chromium
Reporting Units
S.U.
ft
Deg C
umhos/cm
mg/L
mV
mV
NTUs
mg/L
mg/L
mg/L
mg/L
mg/L
ug/L
mg/L
mg/L
ug/L
mg/L
mg/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
15A NCAC 02L Standard
6.5-8.5
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
700
NE
250
NE
250
Soo
NE
1*
SO
700
4*
2
SO
10
Background Threshold Values (Shallow Flow Zone)
4.4-6.1
NE
NE
NE
NE
NE
NE
NE
13.67
14.42
0.1
1
NE
50
3.221
7.7
36.71
1.169
75.47
253
1
0.5
73.03
0.188
1
0.452
3.968
Background Threshold Values (Deep Flow Zone)
4.8-6.1
NE
NE
NE
NE
NE
NE
NE
19.74
18.13
0.1
1
NE
50
11
5.1
56.14
10
70.98
290
1
0.763
23
0.2
1
0.16
1.791
Background Threshold Values (Bedrock Flow Zone)
5.4-7.4
NE
NE
NE
NE
NE
NE
NE
53
68.82
0.1
1
NE
50
16
8.656
107.1
15.1
120
206.2
1
1
19.33
1
1
0.12
3.567
Sample ID
Sample Location
Aquifer Name
Sample
Collection Date
Analytical Results
CCR-09D
Deep
05/07/2018
4.5
18.10
18
781
3.50
540
745
0.7
<5
NA
NA
NA
NA
928
115
17.4
NA
357
654
NA
<0.5
3.6
36.2
0.45
0.061j
NA
1 SI
CCR-11D
Deep
02/05/2018
7.4
5.74
5
445
8.00
5
210
0.0
NA
NA
NA
NA
NA
1190 FS,CC,E,AB
62.4 E
55.3
NA
85.5
NA
NA
<0.5
0.09j
109
<0.1
<0.08
NA
0.19j
CCR-11D
Deep
05/08/2018
6.6
5.21
19
476
0.30
-46
159
1.0
27.1
NA
NA
NA
NA
1080
54
63.9
NA
95.8
386
NA
<0.5
0.07j
122
<0.1
<0.08
NA
0.3 j,S1
CCR-11S
Shallow
02/05/2018
7.5
6.50
7
563
1.00
9
214
1.7
NA
NA
NA
NA
NA
1020 FS,CC,E,AB
84.5 E
40
NA
97.5
NA
NA
<0.5
<0.1
27.6
<0.1
<0.08
NA
0.4 j
CCR-11S
Shallow
05/08/2018
6.7
6.59
20
526
1.20
21
226
0.6
35.6
NA
NA
NA
NA
1290
75.4
74.6
NA
SOS
412
NA
<0.5
0.076j
43.7
<0.1
<0.08
NA
0.15 j,S1
CCR-12D CAMA
Deep
02/02/2018
6.2
30.70
11
264
0.30
4
209
9.8
38.8
38.8
<0.1
<1
17.7
339
12.4
25.7
70.6
23.2
156
366
<0.5
0.23
26.6
<0.1
<0.08
<0.025
11.7
CCR-12D CAMA
Deep
05/04/2018
6.3
28.55
21
244
1.10
-18
187
9.9
45.7 MI
45.7
<0.1
<1
<5
274
12.5
25.7
60.6
23.8
171
60.8 j
0.31 j
0.14
19.4
<0.1
<0.08
<0.025 MI
1 S1
CCR-12D CAMA
Deep
08/03/2018
6.1
33.02
24
317
1.00
5
210
8.8
46.3
46.3
<0.1
<1
3.9
768
17.9
45.1
92.1
32.3
198
172
<0.5
0.23
34.1
<0.1
<0.08
0.042
0.45 j
CCR-12D CAMA
Deep
10/26/2018
6.3
32.36
13
248
0.90
21
226
6.0
50.8
50.8
<0.1
0.62 j
<5
390
13.4
31.9
82.6
25.4
186
<100
<0.5
0.14
20.9
0.01 j
<0.08
<0.025
0.11 j
CCR-12S CAMA
Shallow
01/31/2018
5.1
32.60
15
301
0.30
109
314
0.8
<5
<5
<0.1
<1
<2.5
1300
14.6
56
80.5
51.1
156
191
<0.5
0.54
138
0.2
0.17
3.3
4.8
CCR-12S CAMA
Shallow
05/04/2018
5.0
30.35
19
268
0.20
244
449
4.3
2.9 j
2.9 j
<0.1
<1
3.1
1060
12.5
50.4
67
39.2
160
358
<0.5
0.35
130
0.23
0.12
3.3 P4,R0
4.5
CCR-12S CAMA
Shallow
08/03/2018
5.1
33.07
23
306
0.50
231
436
4.8
2.5 j
2.5 j
<0.1
<1
2.9
1280
14.8
56.3
74.6
49.2
190
582
<0.5
0.43
140
0.2
0.1
2.9
4.9
CCR-12S CAMA
Shallow
1O/26/2018
4.9
32.82
13
310
1.90
378
583
3.3
2.2 j
2.2 j
<0.1
0.55 j
<5
1270
17.2
58.3
78
55.1
204
177
<0.5
0.45
147
0.2
0.24
4.6
4.5
CCR-13D CAMA
Deep
02/O1/2018
4.8
24.51
15
50
2.70
116
321
1.5
<5
<5
<0.1
<1
4.2
192
2.58
13.1
18.4
2.3
33
153
<0.5
0.13
33.6
0.14
<0.08
<0.025
<0.5
CCR-13D CAMA
Deep
05/02/2018
5.1
24.04
21
36
3.90
44
249
0.1
1.8 j
1.8 j
<0.1
<1
<2.5
37.9 j
1.08
3.5
12.8
3.9
28
53.4 j
<0.5
<0.1
10.8
<0.1
<0.08
<0.025
<0.5
CCR-13D CAMA
Deep
07/30/2018
4.6
25.32
26
34
4.00
243
448
0.1
3.5 j
3.5 j
<0.1
<1
<2.5
<50
0.824 S3
3.4
11.1
4
39
<100
<0.5
<0.1
8.9
<0.1
<0.08
0.039 SI
<0.5
CCR-13D CAMA
Deep
10/30/2018
5.1
25.50
17
43
4.20
-60
145
2.2
2.5 j
2.5 j
<0.1
<1
<2.5
124
1.8
8.7
15.1
2.7
38
96.8 j
<0.5
0.06 j
19.1
0.085 j
<0.08
<0.025
0.11 j
CCR-14D
Deep
02/05/2018
4.8
44.42
17
355
1.60
290
495
0.1
NA
NA
NA
NA
NA
1120 FS,CC,E,AB
46 E
59.7
NA
69.1
NA
NA
<0.5
0.27
157
1.1
0.24
NA
0.33j
CCR-14D
Deep
05/07/2018
4.6
44.70
21
432
1.40
274
479
0.3
<5
NA
NA
NA
NA
1080
51.9
88
NA
60.4
265
NA
<0.5
0.38
164
1.3
0.27
NA
0.34 j,S1
CCR-15D CAMA
Deep
02/01/2018
4.7
16.45
13
45
2.30
102
307
1.5
<5
<5
<0.1
<1
<2.5
160
1.23
13.1
11.6
<1
50
<100
<0.5
0.1
107
0.18
<0.08
<0.025
<0.5
CCR-15D CAMA
Deep
05/07/2018
4.8
16.05
20
45
3.50
239
444
0.8
<5
<5
<0.1
<1
<2.5
84.1
0.854
10.6
8.6
<1
35 D6
54.8 j
<0.5
0.052 j
79.2
0.12
<0.08
<0.025
<0.5
CCR-15D CAMA
Deep
08/07/2018
4.7
16.45
25
40
6.60
202
407
0.0
2.3 j
2.3 j
<0.1
<1
<2.5
99.9
0.814
10
8.8
<1
29
<100
<0.5
0.06 j
82.5
0.14
<0.08
<0.025
<0.5
CCR-15D CAMA
Deep
11/O1/2018
4.9
16.43
20
51
3.00
77
282
1.5
<5
<5
<0.1
<1
<2.5
SOS
0.82
9.9
8.4
<1
35
56 j
<0.5
0.061 j
84.4
0.13
<0.08
<0.025
0.39 j,B,BC,Sl
CCR-16D
Deep
02/05/2018
6.6
16.53
15
114
1.50
19
224
5.3
NA
NA
NA
NA
NA
75.7 FS,CC,AB
5.28
2.8
NA
4.4
NA
NA
<0.5
0.14
25.9
<0.1
0.053 j
NA
0.4 j
CCR-16D
Deep
05/08/2018
6.0
15.45
16
60
3.60
42
247
3.5
6.9
NA
NA
NA
NA
16.4 SI
4.14
2.2
NA
2.1
60
NA
<0.5
0.11
17.3
<0.1
0.052 j
NA
0.34 j,S1
CCR-16S
Shallow
02/05/2018
4.4
16.60
15
202
1.20
520
725
1.2
NA
NA
NA
NA
NA
2870 FS,CC,E,AB
19.3
4.8
NA
69.6
NA
NA
<0.5
0.13
54.5
0.44
0.92
NA
3.5
CCR-16S
Shallow
05/08/2018
4.3
15.05
18
240
3.00
277
482
1.0
<5
NA
NA
NA
NA
2640
22.2
10.6
NA
87.7
179
NA
<0.5
1.7
90.3
0.51
1
NA
0.28 j,S1
CCR-IB-01D CAMA
Deep
01/30/2018
6.1
9.34
14
130
0.10
23
228
4.2
24.5
24.5
<0.1
<1
<2.5
<50
10.9
13.1
44.1
16.8
87
<100
<0.5
0.28 SI
6.6
<0.1
<0.08
<0.025
<0.5
CCR-IB-OID CAMA
Deep
05/02/2018
6.0
8.56
17
148
0.80
20
225
2.0
5.7
5.7
<0.1
<1
<2.5
<50
10.4
15
56.3
13
93
<100
<0.5
1.9
8.1
1.6
1.7
<0.025 MI
1.9
CCR-IB-01D CAMA
Deep
08/03/2018
5.8
8.75
21
128
2.90
63
268
7.3
12.6
12.6
<0.1 M3
<1
9.4
<50
10.2
16.3
68.3
13
90
107
<0.5
0.098 j
10.8
0.039 j
<0.08
0.034
0.37 j
CCR-IB-01D CAMA
Deep
1O/25/2018
5.4
9.00
17
116
2.40
119
324
9.2
6
6
<0.1
<1
16.8
<50
9.3
17.6
83.4
13.3
87
239
<0.5
0.15
15.3
0.08 j
<0.08
<0.025
0.33 j,S1
CCR-IB-01S CAMA
Shallow
01/30/2018
6.0
9.49
15
221
0.40
74
279
9.1
44.4
44.4
<0.1
<1
<2.5
146
23.7
13.5
353
44.6
144
<100
<0.5
0.14 S1
41.6
<0.1
<0.08
<0.025 Ml
<0.5
CCR-IB-01S CAMA
Shallow
05/02/2018
6.0
8.54
16
274
0.30
65
270
0.8
35.1
35.1
<0.1
<1
<2.6
136
29.5
14.2
390
64.6
175
<100
<0.5
0.048 j,S1
40.9
<0.1
<0.08
<0.025
<0.5
CCR-IB-01S CAMA
Shallow
08/03/2018
5.8
8.96
20
237
0.10
24
229
6.8
37.4
37.4
<0.1
<1
<2.5
168
25.9
14.6
399
51
151
<100
<0.5
0.17
50.8
<0.1
<0.08
<0.025
0.34 j
CCR-IB-01S CAMA
Shallow
10/25/2018
5.7
9.08
19
270
0.10
-74
131
6.3
40.5
40.5
<0.1
<1
<2.5
176
28.8
13.9
413
66.2
156
53.7 j
<0.5
0.28
47.7
0.026 j
<0.08
<0.025
1.1
CCR-IB-03D CAMA
Deep
01/30/2018
7.7
19.80
9
477
1.70
111
316
0.7
150
150
<0.1
<1
<2.5
72.7
54.3
9.4
277
83.7
310
<100
<0.5
0.81
15.4
<0.1
<0.08
0.73 S1
0.84 S1
CCR-IB-03D CAMA
Deep
05/02/2018
7.6
19.32
22
485
1.50
-141
64
2.2
157
157
<0.1
0.57j
<2.5
67.7
35.6
8.6
215
80.3
316
<100
0.3 j,S1
0.84 S1
10.8
<0.1
<0.08
2 S1
3.4
CCR-IB-03D CAMA
Deep
08/06/2018
9.2
18.44
26
524
1.50
-93
112
2.2
131
84.4
<0.1
<1
<2.5
77.5
8.76
9
194
95.1
338
<100
0.18 j
0.77
8.2
<0.1
<0.08
4.9
3.3
CCR-IB-03D CAMA
Deep
1O/24/2018
10.4
17.85
18
673
0.60
-34
171
3.6
160
<5
<0.1
0.8 j
<2.5
62.6
4.1
8.2
98.6
90.8
375
82.3 j
0.31 j
4.7
5.5
<0.1
<0.08
3.8 M6
3.8
CCR-IB-03S CAMA
Shallow
01/30/2018
6.9
19.05
20
662
0.20
-36
169
6.8
131
131
<0.1
<1
4.9 Sl
261
97.6 M1
26.4
993
181
450
319
<0.5
116
101
<0.1
<0.08
0.032 S1
0.58 S1
CCR-IB-03S CAMA
Shallow
05/02/2018
6.4
17.94
20
740
0.10
15
220
7.8
113
113
<0.1
0.65j
6.4
273
97.9
36.5
974
197
508
1040
<0.5
132
81.8
0.44
0.08
<0.025
0.41 j,S1
CCR-IB-03S CAMA
Shallow
08/06/2018
6.3
18.15
20
640
0.30
-27
178
9.7
69.9
69.9
<0.1
0.64 j
7.7
236
81.8 M1
26.8
824
205
463
1510
<0.5
112
55.5
0.6
0.12
<0.025
0.35 j
CCR-IB-03S CAMA
Shallow
10/31/2018
6.0
17.96
21
643
0.30
-28
177
9.4
71.9
71.9
<0.1
0.73 j
4.7
267
81
31.1
801
196
439
871
<0.5
89.8 1411
42.3
0.4
0.37
<0.025
0.37 j,S1
CCR-US-OID
Deep
02/05/2018
6.0
43.25
15
185
0.90
143
348
0.9
NA
NA
NA
NA
NA
8.1 BH,FS
25.4 E
4.7
NA
13.6
NA
NA
<0.5
0.065 j
19.5
<0.1
<0.08
NA
1.1
CCR-U5-01D
Deep
05/08/2018
5.9
39.36
24
229
1.60
432
637
0.4
56.5
NA
NA
NA
NA
6.8
26
6.5
NA
38.3
157
NA
<0.5
<0.1
22.4
<0.1
0.032j
NA
0.68 S1
CCR-U5-02D
Deep
05/08/2018
5.3
Bottom of Pump
25
154
5.61
457
662
0.5
12.8
NA
NA
NA
NA
80
12
2.8
NA
41.9
109
NA
<0.5
0.075j
65.3
0.17
0.073j
NA
2.6 S1
CCR-U5-03D(Geochem Model)
Deep
06/12/2018
5.8
14.43
21
321
1.08
318
523
3.0
77.7
77.7
<0.1
0.476 SI
5
134
37.3
5
276
72
200
203
<1
<1
26
<1
<1
0.16
<1
CCR-U5-03D CAMA
Deep
08/02/2018
5.8
14.80
24
329
0.70
-195
10
6.9
83.4
83.4
<0.1
<1
<2.6
136
40.9
5.7
287
80.3
217
209 S1
<0.5
0.05j
25.9
<0.1
0.045j
0.07
0.24j
CCR-U5-03D CAMA
Deep
10/29/2018
5.9
14.85
17
312
2.40
521
726
9.9
68
68
<0.1
0.71j
15.9
132
38.7
5.4
218
75.4
214
612
<0.5
0.17
26.9
0.063j
0.11
0.026
0.6
CCR-U5-03S(Geochem Model)
Shallow
06/12/2018
5.8
11.55
22
275
2.21
330
535
2.1
70
70
<0.1
0.655 S1
<5
134
30
4.7
193
59
170
47
<1
<1
43
<1
<1
1.4 M6
2.53
CCR-U5-035 LAMA
Shallow
08/02/2018
5.8
11.90
22
268
4.10
98
303
1.7
71.5
71.5
<0.1
<1
<2.6
127
30.5
4.9
200
60.5
176
75.1 j,51
<0.5
0.055 j
46.4
<0.1
0.049 j
0.2
0.77
CCR-U5-03S CAMA
Shallow
10/29/2018
5.9
11.81
19
255
1.00
190
395
1.9
63.4
63.4
<0.1
0.89j
<2.5
129
29.9
4.6
224
52
166
64.8j
<0.5
0.079j
42.4
0.021j
0.065j
0.16
0.34j
CCR-U5-04D CAMA
Deep
01/30/2018
5.4
22.08
13
823
0.50
177
382
0.1
20.3
20.3
<0.1
<1
<2.5
946
97.7
4.5
593
394
692
518
<0.5
0.57 S1
14.8
2.1
0.2
<0.025
<0.5
Page 13 of 45

TABLE 3-3
2018 COMPREHENSIVE GROUNDWATER QUALITY DATA
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS LLC, MOORESBORO NC
Analytical Parameters
INORGANIC PARAMETERS (TOTAL CONCENTRATION)
INORGANIC PARAMETERS (DISSOLVED CONCENTRATION WITH FILTER SIZE)
Cobalt
Copper
Iron
Lead
Lithium
Magnesium
Manganese
Mercury
Molybdenum
Nickel
Nitrate
+ Nitrite
Potassium
Selenium
Sodium
Thallium
Vanadium
Zinc
Aluminum
Antimony
Arsenic
Barium
Beryllium
Boron
Cadmium
Chromium
Cobalt
Reporting Units
ug/L
ug/L
ug/L
ug/L
ug/L
mg/L
ug/L
ug/L
ug/L
ug/L
mg-N/L
mg/L
ug/L
mg/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
15A NCAC 02L Standard
1*
1000
300
15
NE
NE
50
1
NE
100
NE
NE
20
NE
0.2*
0.3*
1000
NE
NE
NE
NE
NE
NE
NE
NE
NE
Background Threshold Values (Shallow Flow Zone)
10.65
6.569
765.3
1
NE
2.479
168.8
0.2
1
6.256
8.837
5
1
6.139
0.117
1.059
15
NE
NE
NE
NE
NE
NE
NE
NE
NE
Background Threshold Values (Deep Flow Zone)
9.041
9.453
559.7
1
NE
1.6
78.31
0.2
1
12.56
2.8
5
1
4.41
0.063
1.095
15.03
NE
NE
NE
NE
NE
NE
NE
NE
NE
Background Threshold Values (Bedrock Flow Zone)
1.497
5
6220
1
NE
2.328
89.4
0.2
1.716
5
0.92
5
1
1 7.42
0.1
0.37
10
NE
NE
NE
NE
NE
NE
NE
NE
NE
Sample ID
Sample Location
Aquifer Name
Sample
Collection Date
Analytical Results
CCR-09D
Deep
05/07/2018
53.2
NA
NA
0.27
2.2
25
NA
0.1 j
<0.5
NA
NA
2.9
9.2
12.9
0.1
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
CCR-SSD
Deep
02/05/2018
1.6
NA
NA
<0.1
0.7
5.32
NA
<0.2
3.4
NA
NA
8.53
<0.5
15.7
0.17
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
CCR-SSD
Deep
05/08/2018
2
NA
NA
<0.1
<0.5
5.26
NA
<0.2
3.1
NA
NA
7.02
<0.5
15.3
0.22
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
CCR-11S
Shallow
02/05/2018
0.34
NA
NA
<0.1
0.73
16.2
NA
<0.2
0.15 j
NA
NA
1.57
<0.5
16.5
<0.1
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
CCR-11S
Shallow
05/08/2018
0.52
NA
NA
0.031 j
<0.5
4.78
NA
<0.2
1.2
NA
NA
1.87
<0.5
17.7
0.089 j
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
CCR-12D CAMA
Deep
02/03/2018
13.8
16.1
15200
0.16
6.5
7.88
909
<0.2
0.7
13.1
0.56
<5
<0.5
8.83
<0.1
<0.3
<10
<100
<0.5
0.13
25.8
0.19
308
0.18
1.9
3.7
CCR-12D CAMA
Deep
05/04/2018
11.4
0.28 j
10600
0.036 j,B
6.7
7.88
696
<0.2
0.24 j
5.5
0.034
4.34 j
<0.5
9.85
<0.1
0.15 j,51
4.1 j.B
<100
0.15 j
0.2
21.9
<0.1
294
<0.08
0.32 j
10.5
CCR-12D CAMA
Deep
08/03/2018
10.5
0.77
11800
0.14
4.5
9.55
2320
<0.2
1.8
3.5
0.024
5.64
<0.5
12.7
<0.1
0.14 j
8.5 j
<100
<0.5
0.19
26.1
<0.1
593
<0.08
<0.5
9.8
CCR-12D CAMA
Deep
10/26/2018
6.2
0.13 j
15900
<0.1
8.5
8.3
665
<0.2
0.71
1.9
<0.02
4 j
<0.5
10.1
<0.1
<0.3
4.8 j
<100
<0.5
0.11
18.5
<0.1
337
<0.08
0.091 j
5.3
CCR-12S CAMA
Shallow
O1/31/2018
16.8
0.63 S1
174
<0.1
3.6
12.4
37SO
<0.2
<0.5
7.5
<0.02
<5
2
11.7
0.21
<0.3
31.9
113
<0.5
0.47
129
0.23
1200
0.15
4.8
17.1
CCR-12S CAMA
Shallow
05/04/2018
15.6
0.59
384
0.1 B
3.6
11.3
3150
0.08 j,51
<0.5
7.5
0.13
<5
1.7
11.7
0.21
<0.3
23.8 B
133
<0.5
0.48
130
0.24
1020
0.13
4.3
16.2
CCR-12S CAMA
Shallow
08/03/2018
15.7
0.68
693
0.1
3.6
12.4
3610
<0.2
<0.5
7.1
<0.02
<5
1.9
11.3
0.19
<0.3
24.5
148
<0.5
0.42
127
0.2
1140
0.12
5
15.7
CCR-12S CAMA
Shallow
1O/26/2018
16.5
0.55
93
<0.1
3.2
12.7
3610
<0.2
<0.5
7.3
<0.02
<5
2
10.7
0.21
0.11 j
25.5
124
<0.5
0.52
130
0.24
1160
0.24
4.6
16
CCR-13D CAMA
Deep
02/01/2018
5.7
3.1
<50
<0.1
2.9
1.79
263
0.54
<0.5
6.2
<0.02
<5
<0.5
<5
0.11 SI
<0.3
17.2
141
<0.5
0.13
28.7
0.15
177
<0.08
0.66 SI
6.1
CCR-13D CAMA
Deep
05/02/2018
<0.1
<0.5
<50
<0.1
<0.5
1.13
30
0.07 j
<0.5
<0.5
<0.02
<5
<0.5
2.23 j
0.067 j
<0.3
11.9
<100
<0.5
<0.1
10.8
0.049 j
45.3 j
<0.08
0.14 j
3
CCR-13D CAMA
Deep
07/30/2018
2.6
1.6 S3
211 RO
<0.1
2.2
0.958
30.5 S3
<0.2
<0.5
5.4
<0.02
<5
<0.5
1.93 j
0.056 j
<0.3
7.4 j
68.3 j
<0.5
0.087 j,S1
13.8
0.04 j
69.1
<0.08
0.2 j,51
3.4
CCR-13D CAMA
Deep
10/30/2018
3.7
2.1
<50
<0.1
2.4 j
1.5
125
0.16 j
<0.5
5.2
<0.02
<5
<0.5
2.5 j
0.071 j
<0.3
13.2
103
<0.5
0.062 j,B
21.6
0.1
133
<0.08
<0.5
4
CCR-14D
Deep
02/05/2018
1.5
NA
NA
0.029 j
3.5
5.14
NA
<0.2
<0.5
NA
NA
3.05
1.2
12.2
0.16
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
CCR-14D
Deep
05/07/2018
1.8
NA
NA
0.049 j
4.5
5.88
NA
<0.2
<0.5
NA
NA
3.44
0.44 j
13.3
0.23
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
CCR-15D CAMA
Deep
02/01/2018
4.5
<0.5
<50
0.15 S3
1.1
0.782
160
<0.2
<0.5
0.51 S3
0.27
<5
<0.5
<5
<0.1
<0.3
<10
<100
<0.5
<0.1
95.3
0.16
174
<0.08
0.64 SI
4.7
CCR-15D CAMA
Deep
05/07/2018
2.9
<0.5
<50
0.11
0.74
0.601
83.5
<0.2
<0.5
0.14 j,B,SI
0.053
<5
<0.5
4.1 j
0.055 j
<0.3
<10
96.6 j
<0.5
0.19
87.5
0.17
117
<0.08
0.14 j
4.3
CCR-15D CAMA
Deep
08/07/2018
2.7
0.31 j
<50
0.13
0.77
0.514
74.6
<0.2
<0.5
0.22 j
0.026
2.62 j
<0.5
4.04 j
0.058 j
<0.3
4.3 j
<100
<0.5
0.059 j
79.2
0.14
93.2
<0.08
<0.5
3.1
CCR-15D CAMA
Deep
11/O1/2018
2.8
0.96 B
<50
<0.1
0.96 j
0.53
81.9
<0.2
<0.5
0.58
0.051
<5
<0.5
3.9 j
0.052 j
<0.3
4.1 j
<100
<0.5
0.051 j
90.5
0.12
116
<0.08
<0.5
3.1
CCR-16D
Deep
02/05/2018
0.18
NA
NA
0.084 j
6.2
1.32
NA
<0.2
0.43 j
NA
NA
5.7
<0.5
5.79
0.041 j
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
CCR-16D
Deep
05/08/2018
0.32
NA
NA
0.18
3.8
1.09
NA
<0.2
0.16 j
NA
NA
3.63
<0.5
4.35
0.058 j
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
CCR-16S
Shallow
02/05/2018
72
NA
NA
1.4
2.9
1.92
NA
0.07 j
<0.5
NA
NA
5.59
5.9
4.12
0.22
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
CCR-16S
Shallow
05/08/2018
85.1
NA
NA
1.9
2.8
2.91
NA
0.066 j
<0.5
NA
NA
4.92
2.1
4.64
0.21
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
CCR-IB-01D CAMA
Deep
O1/30/2018
0.13
<0.5
5190
<0.1
5.2
2.74
140
<0.2
<0.5
1.6 SI
0.028
<5
<0.5
<5
<0.1
<0.3
<10
<100
<0.5
0.16
8.4
<0.1
<50
<0.08
<0.5
0.15
CCR-IB-01D CAMA
Deep
05/02/2018
1.9
2
2430
1.8
5.5 SS
2.56
89.4
<0.2
<0.5
2.7 SI
0.097
<5
1.8
4.17 j
1.8
2
2.6 j
79.3 j
<0.5
0.11
10.2
<0.1
<50
<0.08
0.33 j
0.24
CCR-IB-01D CAMA
Deep
08/03/2018
0.2
0.35 j
2810
0.094 j
3.4
2.69
109
<0.2
<0.5
1.7 B
0.11
<5
<0.5
4.61 j
<0.1
0.078 j
5.3 j,B
<100
<0.5
0.077 j
9.7
<0.1
<50
<0.08
<0.5
0.19
CCR-IB-01D CAMA
Deep
10/25/2018
0.25
0.67
1160
0.23
2.4 j
2.6
56.8
<0.2
<0.5
1.5
0.18
<5
<0.5
4.7 j
0.023 j
0.1 j
7.7 j
67.3 j
<0.5
0.11
14.7
0.035 j
<50
<0.08
0.11 j
0.2
CCR-IB-01S CAMA
Shallow
O1/30/2018
2.2
<0.5
418
<0.1
<0.5
6.11
1790
<0.2
<0.5
<0.5
0.021
<5
<0.5
<5
<0.1
<0.3
<10
<100
<0.5
0.1
39.2 M1,R1
<0.1
154 MI
<0.08
<0.5
2.1
CCR-IB-01S CAMA
Shallow
05/02/2018
3.2
<0.5
223
<0.1
<0.5
8
1840
<0.2
<0.5
0.53 SI
<0.02
5.09
<0.5
4.4 j
0.099 j
0.14 j,B,SI
<10
<100
<0.5
<0.1
40.3
<0.1
134
<0.08
0.29 j
3.1
CCR-IB-01S CAMA
Shallow
08/03/2018
2
0.21 j
1470
0.065 j
0.15 j
6.62
2020
<0.2
<0.5
0.76 B
<0.02
5.47
<0.5
4.33 j
0.081 j
0.11 j
<10
<100
<0.5
0.063 j
44
<0.1
141
<0.08
0.27 j
2
CCR-IB-01S CAMA
Shallow
10/25/2018
3.2
<0.5
1800
<0.1
0.25 j
7.2
2200
<0.2
<0.5
1.1
<0.02
5.1
<0.5
4.1 j
0.1
0.46
<10
<100
<0.5
0.056 j
45.6
0.023 j
166
<0.08
0.56
3.1
CCR-IB-03D CAMA
Deep
O1/30/2018
<0.1
IA SI
<50
<0.1
9.6
5.94
<5
<0.2
11.2
0.88 Sl
0.054
17.3
<0.5
23.9
<0.1
1.8 S3
<10
<100
<0.5
0.73
9.6
<0.1
73.9
<0.08
2.5
<0.1
CCR-IB-03D CAMA
Deep
05/02/2018
0.027 j
0.9
<50
<0.1
26.7 SI
6.12
<5
<0.2
10.8
1.6 SI
0.055
38.1
<0.5
35.5
<0.1
1.8
<10
<100
0.28 j
0.76
10.8
<0.1
66.2
<0.08
2.4
0.071 j
CCR-IB-03D CAMA
Deep
08/06/2018
<0.1
0.97
<50
<0.1
48
5.32
<5
<0.2
10.4
0.47 j
0.18
65
0.26 j
49.8
<0.1
1.6
<10
<100
0.19 j
0.82
9.3
<0.1
67.6
<0.08
3
<0.1
CCR-IB-03D CAMA
Deep
10/24/2018
0.031 j
1.7 SI
<50
<0.1
34.2
0.7
<5
<0.2
11.3
0.68
0.11 SI
85.5
<0.5
68.7
<0.1
10.7
<10
<200
0.22 j
4.3
<5
<0.1
64.5 j,D3
<0.08
2.6
0.023 j
CCR-IB-03S CAMA
Shallow
O1/30/2018
6.4
<0.5
4040
<0.1
18.9
9.82
1910
<0.2
34.9
1.3 S1
<0.02
7.95
<0.5
14.2
<0.1
<0.3
<10
<100
<0.5
109
87.5
<0.1
254
<0.08
<0.5
5.7
CCR-IB-03S CAMA
Shallow
05/02/2018
11.5
0.21 j
4700
0.11
20.4 SI
11.9
2180
<0.2
25.5
2.8 SI
0.014 j
8.01
0.73
13.3
0.098 j
0.22 j,B,SI
4.7 j
479
<0.5
125
78.3
0.31
263
0.078 j
0.22 j
11.5
CCR-IB-03S CAMA
Shallow
08/06/2018
19
0.43 j
5350
0.18
15.2
9.66
2050
<0.2
20.1
3.8
<0.02 M1
6.93
1.2
12.6
0.12
0.35
12.2 B
168
<0.5
98.7
47
0.3
225
0.11
<0.5
17.5
CCR-IB-03S CAMA
Shallow
10/31/2018
18.8
0.46 j
4870
0.13
12.3
10.6
2130
<0.2
16.3
3.9
<0.02
7.1
0.76
12.6
0.12
0.31
14.6
126
<0.5
82.9
39.8
0.26
254
0.33
<0.5
18.2
CCR-US-011)
Deep
02/05/2018
1.1
NA
NA
<0.1
0.86
2.58
NA
<0.2
0.28 j
NA
NA
2.91
<0.5
3.58
<0.1
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
CCR-US-01D
Deep
05/08/2018
1.1
NA
NA
0.055 j
1.1
7.3
NA
<0.2
0.15 j
NA
NA
2.7
1.2
3.9
0.03 j
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
CCR-U5-02D
Deep
05/08/2018
0.58
NA
NA
<0.1
0.94
5.98
NA
<0.2
<0.5
NA
NA
2.68
9.1
3.3
0.095 j
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
CCR-1.15-03D(Geochem Model)
Deep
06/12/2018
3.71
<1
211
<1
<5
11
2270
<0.05
<1
1.16
<0.01
1.93
<1
4.03
0.198 j,63
0.345
<5
4.745j
<1
<1
26
<1
137
<1
<1
3.48
CCR-1.15-0313 CAMA
Deep
08/02/2018
3
0.3 j
173
0.053 j,B
0.3 j
11.4
2140
<0.2
<0.5
1.4
<0.02
<5
<0.5
4.02 j
0.14
0.15 j
<10
<100
<0.5
<0.1
24.1
<0.1
127
<0.08
<0.5
2.7
CCR-U5-03D CAMA
Deep
1O/29/2018
2.1
0.71
588
0.34
0.52 j
11.3
1990
<0.2
<0.5
1.8
0.018 j,S1
<5
<0.5
3.8 j
0.16
0.56
3.1 j
<100
<0.5
0.047 j
23.2
0.022 j
121
0.092
<0.5
1.9
CCR-1.15-03S(Geochem Model)
Shallow
06/12/2018
0.39j
0.522j
60
<1
<5
11.2
968
<0.05
<1
2.78
0.097
2.19
<1
3.85
0.157 j,133
0.39
2.489j
10
<1
<1
43
<1
138
<1
1.08
0.348j
CCR-U5-03S CAMA
Shallow
08/02/2018
0.58
0.28 j
87.4
0.072 j,B
0.77
11.1
1120
<0.2
0.16 j
2.1
0.12
<5
0.14 j
3.56 j
0.076 j
0.23 j
<10
<100
<0.5
0.05 j
42.7
<0.1
116
0.045 j
0.17 j
0.64
CCR-U5-03S CAMA
Shallow
10/29/2018
0.71
0.31 j
70.5
<0.1
0.25 j
9.9
1310
<0.2
<0.5
1.4
0.13
<5
<0.5
3.6 j
0.081 j
0.36
6 j
<100
<0.5
0.046 j
38.3
0.019 j
115
0.051 j
0.16 j,S1
0.62
CCR-U5-04D CAMA
Deep
O1/30/2018
67.1
<0.5
1750
0.18
7.3
30.4
4150
<0.2
<0.5
34.1
<0.02
7.95
2.3
8.07
0.73
<0.3
14.7
446
<0.5
0.85
12.6
2.3
892
0.24
<0.5
76.5
Page 14 of 45

TABLE 3-3
2018 COMPREHENSIVE GROUNDWATER QUALITY DATA
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS LLC, MOORESBORO NC
Analytical Parameters
INORGANIC PARAMETERS (DISSOLVED CONCENTRATION WITH FILTER SIZE)
RADIONUCLIDES
OTHER PARAMETERS
Copper
Iron
Lead
Lithium
Manganese
Mercury
Molybdenum
Nickel
Phosphorus
Selenium
Strontium
Thallium
Vanadium
Zinc
Radium-226
Radium-228
Total
Radium
Uranium-238
Total Uranium
Uranium-238
(Dissolved)
Carbonate
Alkalinity
Fluoride
Phosphorus
Reporting Units
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
mg/L
ug/L
ug/L
ug/L
ug/L
ug/L
pCi/L
pCi/L
pCi/L
ug/mL
ug/mL
ug/mL
mg/L
mg/L
mg/L
15A NCAC 02L Standard
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
5^
NE
0.03^
NE
NE
2
NE
Background Threshold Values (Shallow Flow Zone)
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
2.58
NE
0.0005
NE
5
NE
NE
Background Threshold Values (Deep Flow Zone)
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
1.51
NE
0.0005
NE
5
NE
NE
Background Threshold Values (Bedrock Flow Zone)
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
3.1
NE
0.0005
NE
5
NE
NE
Sample ID
Sample Location
Aquifer Name
Sample
Collection Date
Analytical Results
CCR-09D
Deep
05/07/2018
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
0.198 U
-0.00333 U
0.198 U
NA
NA
NA
NA
0.26
NA
CCR-SSD
Deep
02/05/2018
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
0.294
0.516
0.81
NA
NA
NA
NA
0.35
NA
CCR-SSD
Deep
05/08/2018
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
0.235 U
0.567 U
0.802 U
NA
NA
NA
NA
0.33
NA
CCR-11S
Shallow
02/05/2018
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
0
0.365
0.365
NA
NA
NA
NA
0.1
NA
CCR-11S
Shallow
05/08/2018
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
0 U
0.419 U
0.419 U
NA
NA
NA
NA
0.42
NA
CCR-12D CAMA
Deep
02/02/2018
0.69
13800
<0.1
NA
891
<0.2
<0.5
2.7
<0.05
<0.5
66.1
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
CCR-12D CAMA
Deep
05/04/2018
0.46 j
13000
<0.1
NA
750
<0.2
0.23 j
3.5
<0.05
<0.5
70.8
<0.1
0.21 j
3.8 j
NA
NA
NA
NA
NA
NA
<5
0.087 j
<0.05
CCR-12D CAMA
Deep
08/03/2018
0.7
10800
0.045 j
NA
1760
<0.2
1.6
3.2
<0.05
<0.5
79.3
<0.1
<0.3
7.7 j
NA
NA
NA
NA
NA
NA
<5
0.084 j
<0.05
CCR-12D CAMA
Deep
10/26/2018
0.33 j
16000
<0.1
NA
552
<0.2
0.68
2.2
0.046 j
<0.5
75.4
<0.1
<0.3
12.4
NA
NA
NA
NA
NA
NA
<5
0.08 j
0.043
CCR-12S CAMA
Shallow
01/31/2018
0.92 SI
110
<0.1
NA
3290
<0.2
<0.5
7.6
<0.05
2.1
73.3
0.22
<0.3
21.4
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
CCR-12S CAMA
Shallow
05/04/2018
4.3
202
0.055j
NA
3150
<0.2
<0.5
7.5
<0.05
2.1
67.9
0.2
0.23j
26.2
NA
NA
NA
NA
NA
NA
<5
0.091j
<0.05
CCR-12S CAMA
Shallow
08/03/2018
0.84
156
0.049j
NA
3390
<0.2
<0.5
7.1
<0.05
1.9
69.7
0.19
<0.3
23.4
NA
NA
NA
NA
NA
NA
<5
0.095j
<0.05
CCR-12S CAMA
Shallow
10/26/2018
1.7
40.2 j
<0.1
NA
3350
<0.2
<0.5
7.3
<0.05
1.9
71.8
0.2
0.091 j
24.3
NA
NA
NA
NA
NA
NA
<5
0.087 j
<0.05
CCR-13D CAMA
Deep
02/01/2018
3.5
<50
<0.1
NA
237
<0.2
<0.5
6.5
<0.05
<0.5
16
0.12
<0.3
16.7
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
CCR-13D CAMA
Deep
05/02/2018
2.4
<50
<0.1
NA
39.7
0.1 j
<0.5
4.9
<0.05
<0.5
11.8
0.074 j
0.11 j,B
7.6 j,B
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
CCR-13D CAMA
Deep
07/30/2018
2.3 S1
<50
<0.1
NA
70.5
<0.2
<0.5
6
<0.05
<0.5
13.8
0.063 j
<0.3
9.6 j
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
CCR-13D CAMA
Deep
10/30/2018
3
<50
<0.1
NA
140
0.14j
<0.5
5.1
<0.05
<0.5
15.2
0.074j
<0.3
12.1 S1
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
CCR-14D
Deep
02/05/2018
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
0.543
0.418
0.961
NA
NA
NA
NA
<0.1
NA
CCR-14D
Deep
05/07/2018
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
0.29 U
0.897
1.19 U
NA
NA
NA
NA
<0.1
NA
CCR-15D CAMA
Deep
02/01/2018
0.56 B,S1
<50
0.15
NA
163
<0.2
<0.5
0.8
<0.05
<0.5
13
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
CCR-15D CAMA
Deep
05/07/2018
0.94 B
<50
0.12
NA
121
<0.2
<0.5
0.51
<0.05
0.24 j
11.6
0.067 j
0.61 B
4.1 j,B
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
CCR-15D CAMA
Deep
08/07/2018
0.63
29.9 j
0.14
NA
84.7
<0.2
<0.5
0.56
<0.05
<0.5
8.7
0.064 j
<0.3
3 j
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
CCR-15D CAMA
Deep
11/01/2018
1.3 S1
<50
<0.1
NA
97.2
<0.2
<0.5
0.9
<0.05
<0.5
9.4
0.05 j
<0.3
5 j
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
CCR-16D
Deep
02/05/2018
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
0.124
0.647
0.771
NA
NA
NA
NA
0.053 j
NA
CCR-16D
Deep
05/08/2018
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
0.128 U
0.155 U
0.283 U
NA
NA
NA
NA
<0.1
NA
CCR-16S
Shallow
02/05/2018
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
0.662
0.573
1.235
NA
NA
NA
NA
0.19
NA
CCR-16S
Shallow
05/08/2018
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
0.509 SI
0.996
1.51
NA
NA
NA
NA
0.29
NA
CCR-IB-01D CAMA
Deep
01/30/2018
<0.5
2420
<0.1
NA
95.1
<0.2
<0.5
1.6
<0.05
<0.5
54.8
<0.1
<0.3
10.2
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
CCR-IB-01D CAMA
Deep
05/02/2018
0.3 j
2050
0.081 j
NA
82.2
<0.2
<0.5
0.96
<0.05
<0.5
64.1
<0.1
0.34 B
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
CCR-IB-01D CAMA
Deep
08/03/2018
0.59
1520
<0.1
NA
80.4
<0.2
<0.5
1.5
<0.05
<0.5
64.7
<0.1
<0.3
5.8 j
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
CCR-IB-01D CAMA
Deep
10/25/2018
0.86 SI
769
<0.1
NA
51.7
<0.2
<0.5
1.4
<0.05
<0.5
81.5
0.021 j
<0.3
11.1
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
CCR-IB-01S CAMA
Shallow
01/30/2018
<0.5
178
<0.1
NA
1860
<0.2
<0.5
<0.5
<0.05
<0.5
343 M1,R1
<0.1
<0.3
<10 M1,R1
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
CCR-IB-01S CAMA
Shallow
05/02/2018
0.79
195 B
<0.1
NA
1840
<0.2
<0.5
0.59
<0.05
<0.5
384
0.098 j
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
CCR-IB-01S CAMA
Shallow
08/03/2018
0.28 j
380
<0.1
NA
1770
<0.2
<0.5
0.81
<0.05
<0.5
354
0.084 j
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
CCR-IB-01S CAMA
Shallow
10/25/2018
0.63 SI
623
<0.1
NA
1980
<0.2
<0.5
1.7
<0.05
<0.5
397
0.094 j
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
0.052 j
<0.05
CCR-IB-03D CAMA
Deep
01/30/2018
1.1
<50
<0.1
NA
<5
<0.2
9.9
0.92
<0.05
<0.5
185
<0.1
1.4
<10
NA
NA
NA
NA
NA
NA
<5
0.18
<0.05
CCR-IB-03D CAMA
Deep
05/02/2018
1.8
<50
<0.1
NA
<5
<0.2
10.6
3.4
<0.05
<0.5
213
<0.1
1.7
<10
NA
NA
NA
NA
NA
NA
<5
0.15
<0.05
CCR-IB-03D CAMA
Deep
08/06/2018
0.77
<50
<0.1
NA
<5
<0.2
10.7
0.46j
<0.05
0.14j
171
<0.1
1.6
<10
NA
NA
NA
NA
NA
NA
46.8
0.16
<0.05
CCR-IB-03D CAMA
Deep
10/24/2018
1.2 S1
<100
<0.1
NA
<5
<0.2
11.5
0.66
0.062
<0.5
100
<0.1
9.4
3.3 j,SI
NA
NA
NA
NA
NA
NA
156
0.3
0.054
CCR-IB-03S CAMA
Shallow
01/30/2018
<0.5
3180
<0.1
NA
1630
<0.2
34
1.2
<0.05
<0.5
934
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
0.2
<0.05
CCR-IB-03S CAMA
Shallow
05/02/2018
0.11j
4200
0.074j
NA
2110
<0.2
26.3
2.7
<0.05
0.59
915
0.11
0.17 j,B
3.3j
NA
NA
NA
NA
NA
NA
<5
0.22
0.03 j,S1
CCR-IB-03S CAMA
Shallow
08/06/2018
1.9
3990
0.069j
NA
1760
<0.2
19.8
4
<0.05
0.83
695
0.12
0.099j
10.9
NA
NA
NA
NA
NA
NA
<5
0.28
<0.05
CCR-IB-03S CAMA
Shallow
10/31/2018
0.19j,S1
4270
<0.1
NA
1990
<0.2
16
3.7
<0.05
0.81
751
0.11
<0.3
11.8
NA
NA
NA
NA
NA
NA
<5
0.22
<0.05
CCR-US-01D
Deep
02/05/2018
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
0.346
0.489
0.835
NA
NA
NA
NA
<0.1
NA
CCR-US-01D
Deep
05/08/2018
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
0.666 U
1.11
1.78
NA
NA
NA
NA
<0.1
NA
CCR-U5-02D
Deep
05/08/2018
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
0.0682 U
0.212 U
0.28 U
NA
NA
NA
NA
<0.1
NA
CCR-1.15-03D(Geochem Model)
Deep
06/12/2018
0.473j
13
<1
<5
2280
<0.05
<1
1.58
<0.05
<1
275
0.179 j,B3
0.173j
<5
NA
NA
NA
NA
NA
NA
<5
0.055j
<0.05
CCR-U5-03D CAMA
Deep
08/02/2018
1.2 SI
<50
0.066 j,S1
NA
1960
<0.2
<0.5
1.5 S1
<0.05
<0.5
264
0.14
0.099j
2.6j
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
CCR-U5-03D CAMA
Deep
10/29/2018
0.92
<50
<0.1
NA
1870
<0.2
<0.5
2.2
<0.05
<0.5
200
0.15
<0.3
3.8 j
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
CCR-1.15-03S(Geochem Model)
Shallow
06/12/2018
0.812j
8.724j
<1
<5
968
<0.05
<1
1.99
<0.05
<1
191
0.177 j,B3
0.372
2.025j
NA
NA
NA
NA
NA
NA
<5
0.0525j
<0.05
CCR-U5-035 LAMA
Shallow
08/02/2018
0.81 S1
<50
0.079 j,51
NA
1050
<0.2
0.079 j
2.2 S1
<0.05
<0.5
184
0.081 j
0.16 j
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
CCR-U5-03S CAMA
Shallow
10/29/2018
0.43j
<50
<0.1
NA
1220
<0.2
<0.5
1.3
<0.05
<0.5
202
0.077j
0.26j
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
IE CCR-U5-04D CAMA
Deep
01/30/2018
0.56
1490
0.14
NA
3520
<0.2
<0.5
39.5
<0.05
<0.5
508
0.96
<0.3
13.5
NA
NA
NA
NA
NA
NA
<5
0.14
<0.05
Page 15 of 45

TABLE 3-3
2018 COMPREHENSIVE GROUNDWATER QUALITY DATA
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS LLC, MOORESBORO NC
Analytical Parameters
FIELD PARAMETERS
WATER QUALITY PARAMETERS
SELECTED 40CFR257 APPENDIX III CONSTITUENTS plus Sr
INORGANIC PARAMETERS (TOTAL CONCENTRATION)
pH
Water
Level
Temp
Spec
Cond
DO
ORP
Eh
Turbidity
Alkalinity
Bi-
carbonate
Alkalinity
Sulfide
Total
Organic
Carbon
Total
Suspended
Solids
Boron
Calcium
Chloride
Strontium
Sulfate
Total
Dissolved
Solids
Aluminum
Antimony
Arsenic
Barium
Beryllium
Cadmium
Chromium
(VI)
Chromium
Reporting Units
S.U.
ft
Deg C
umhos/cm
mg/L
mV
mV
NTUs
mg/L
mg/L
mg/L
mg/L
mg/L
ug/L
mg/L
mg/L
ug/L
mg/L
mg/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
15A NCAC 02L Standard
6.5-8.5
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
700
NE
250
NE
250
Soo
NE
1*
SO
700
4*
2
SO
10
Background Threshold Values (Shallow Flow Zone)
4.4-6.1
NE
NE
NE
NE
NE
NE
NE
13.67
14.42
0.1
1
NE
50
3.221
7.7
36.71
1.169
75.47
253
1
0.5
73.03
0.188
1
0.452
3.968
Background Threshold Values (Deep Flow Zone)
4.8-6.1
NE
NE
NE
NE
NE
NE
NE
19.74
18.13
0.1
1
NE
50
11
5.1
56.14
10
70.98
290
1
0.763
23
0.2
1
0.16
1.791
Background Threshold Values (Bedrock Flow Zone)
5.4-7.4
NE
NE
NE
NE
NE
NE
NE
53
68.82
0.1
1
NE
So
16
8.656
107.1
15.1
120
208.2
1
1
19.33
1
1
0.12
3.567
Sample ID
Sample Location
Aquifer Name
Sample
Collection Date
Analytical Results
CCR-US-04S CAMA
Shallow
O1/30/2018
4.9
20.66
16
515
2.50
208
413
5.2
<5
<5
<0.1
<1
25.9 SI
574
47.5
4.8
556
222
379
3840
<0.5
2.5
18.1
6.1
0.22
1 SS
2 SI
CCR-U5-05D
Bedrock
02/02/2018
7.1
63.42
13
589
1.80
-45
160
0.2
NA
NA
NA
NA
NA
440
82.7 E
6.5
NA
163
NA
NA
<0.5
1.3
26.5
0.054j
<0.08
NA
0.24j
CCR-U5-05D
Bedrock
05/08/2018
6.9
62.82
18
561
0.88
221
426
0.6
132
NA
NA
NA
NA
374
69.4
6.4
NA
132
408
NA
<0.5
1.4
22.7
<0.1
<0.08
NA
0.67 S1
CCR-U5-06DA
Deep
02/02/2018
5.2
10.95
12
490
1.50
140
345
7.6
NA
NA
NA
NA
NA
183
54.4 E
6
NA
235
NA
NA
<0.5
0.16
24.4
0.084j
<0.08
NA
0.52
CCR-U5-06DA
Deep
05/08/2018
4.9
10.57
18
530
0.60
181
386
0.8
15
NA
NA
NA
NA
173
53.4
5.8
NA
215
424
NA
<0.5
0.1
18.1
<0.1
<0.08
NA
0.13 j,S1
CCR-U5-06S
Shallow
02/02/2018
3.7
9.75
10
520
0.60
33
238
0.0
NA
NA
NA
NA
NA
159
41.6 E
6.3
NA
216
NA
NA
<0.5
0.47
16.3
1.3
0.044j
NA
0.16j
CCR-U5-06S
Shallow
05/08/2018
3.7
9.27
17
480
2.00
116
321
0.0
<5
NA
NA
NA
NA
156
35.9
6
NA
169
320
NA
<0.5
0.28
17.5
1.1
0.035j
NA
0.65 S1
CCR-U5-08D
Deep
02/OS/2018
4.5
9.64
14
925
0.60
103
308
8.2
NA
NA
NA
NA
NA
190
75.6 E
6.3
NA
471 E
NA
NA
<0.5
1.7
25.1
10.3
0.64
NA
5.6
CCR-US-08D
Deep
05/09/2018
4.7
8.78
21
900
0.70
-56
149
4.4
<5
NA
NA
NA
NA
180
77.3
6.8
NA
479
804
NA
<0.5
0.93
18
8.8
0.59
NA
1.2 S1
CCR-U5-08S
Shallow
02/05/2018
5.6
9.85
12
925
4.00
382
587
3.0
NA
NA
NA
NA
NA
20.8 BH,FS
77 E
13.3
NA
425 E
NA
NA
<0.5
0.42
39.4
0.16
0.13
NA
1
CCR-U5-08S
Shallow
05/09/2018
5.4
9.30
21
817
0.70
139
344
7.8
55.8
NA
NA
NA
NA
15.5
62.4 M1
14.6
NA
363
627
NA
<0.5
0.44
53.9
0.15
0.15
NA
17.7
CCR-1.15-09S
Shallow
02/05/2018
4.5
7.25
16
176
1.60
36
241
0.1
NA
NA
NA
NA
NA
275
15
6.8
NA
57.1
NA
NA
<0.5
0.12
106
0.9
0.044j
NA
<0.5
CCR-U5-09S
Shallow
05/08/2018
5.5
7.16
18
65
0.80
85
290
0.1
13.1
NA
NA
NA
NA
384
4.7
2.7
NA
5.8
59
NA
<0.5
<0.1
21.6
0.17
<0.08
NA
0.2 j,SI
CCR-US-SOD
Deep
02/02/2018
5.7
25.42
11
SOS
2.60
97
302
1.0
NA
NA
NA
NA
NA
8.4 BH
9.06
5.1
NA
11
NA
NA
<0.5
0.077j
33.4
0.073j
0.032j
NA
1.2
CCR-US-SOD
Deep
05/08/2018
5.5
23.73
18
107
3.80
414
619
1.5
24.5
NA
NA
NA
NA
9.8
9.09
5.6
NA
9.5
76
NA
<0.5
0.051 j
34.9
0.07 j
<0.08
NA
1.2 S1
CCR-US-SOS
Shallow
02/02/2018
5.2
24.66
14
54
2.60
-3
202
9.5
NA
NA
NA
NA
NA
4 j,BH
1.92
5
NA
<1
NA
NA
<0.5
0.056 j
38.4
0.23
<0.08
NA
2.3
CCR-US-IOS
Shallow
05/08/2018
5.2
23.55
19
59
4.85
475
680
6.5
9.8
NA
NA
NA
NA
5.7
2.18
4.9
NA
<1
53
NA
<0.5
<0.1
41
0.21
<0.08
NA
2.1 S1
CLMW-01
Shallow
02/01/2018
4.8
38.14
19
505
0.20
134
339
5.5
<5
<5
<0.1
<1
2.7
1460
61.5 M1
62.4
920
124
334
246
<0.5
1.1
62.3
<0.1
<0.08
0.2 S1
4.9
CLMW-01
Shallow
05/04/2018
4.7
37.70
24
499
0.30
-93
112
9.4
<5
<5
<0.1
<1
<2.7
1500
61
67.9
934
111
343
364
<0.5
0.73
68.2
0.088j
<0.08
0.22 SS
4.4
CLMW-01
Shallow
08/01/2018
4.7
38.06
23
485
0.20
112
317
3.5
<5
<5
<0.1
<1
<2.5
1440
61.2
71.7
904
119
334
173
0.18j
0.86
49.9
0.085j
<0.08
0.16 S1
0.36j
CLMW-01
Shallow
1O/23/2018
4.8
38.22
21
460
0.60
249
454
8.1
<5
<5
<0.1
<1
<2.5
1340
57.8
65.2 MS
827
98.3 M1
286
197
<0.5
0.58
44.9
0.082j
0.32
0.077
1.3 SS
CLMW-02
Shallow
02/01/2018
4.1
40.52
18
506
0.50
129
334
4.0
<5
<5
<0.1
<1
<2.5
450
33.1
40.2
84.5
202
424
1670
NA
NA
40.4
NA
NA
0.12
NA
CLMW-02
Shallow
04/27/2018
4.1
39.33
18
629
0.50
267
472
7.2
<5
<5
<0.1 RI
<1
<2.5
482
38.3
43.4
92.1
209
427
1840
0.28j
1.3
38
1.1
0.47
0.12
1.5 SS
CLMW-02
Shallow
08/01/2018
4.2
39.74
21
660
0.80
165
370
1.8
<5
<5
<0.1
<1
<2.5
566
43.2
47
97.4
242
459
1880
<0.5
1.2
36.7
0.91
0.48
0.13 S1
0.46j
CLMW-02
Shallow
1O/23/2018
3.8
39.74
18
6
0.90
323
528
1.9
<5
<5
<0.1
<1
10.6
517
40.7
46.2
98.9
212
412
1970
<0.5
0.71
39.7
0.92
0.59
0.082
0.96 SI,B
CLMW-03D
Deep
01/31/2018
5.2
49.45
18
645
0.50
213
418
8.9
<5
<5
<0.1
<1
4.3
776
57.8
47.3
308
256
459
480
<0.5
0.49
42.9
0.48
0.18
0.12 M1,R1,S1
1.2 S1
CLMW-03D
Deep
04/27/2018
5.1
48.53
20
700
0.10
19
224
8.4
4.4j
4.4j
<0.1
<1
4.7
794
65.6
46.3
324
253 M6
514
488
0.19j
0.3 SS
40.9
0.43
0.25
0.11 SS
0.75 SS
CLMW-03D
Deep
08/07/2018
5.2
48.43
26
753
1.00
208
413
9.8
3.9 j
3.9 j
<0.1
<1
12.1
928
67.3
52.6 M6
261
303 M6
526
649
<0.5
0.18
32.4
0.49
0.2
0.16
2.1
CLMW-03D
Deep
1O/29/2018
5.1
48.63
21
759
0.60
-24
181
5.2
3.2 j
3.2 j
<0.1
<1
2.6
982
71.3
51.1
288
287
548
175
<0.5
0.1
31.4
0.4
0.3
0.14
0.92
CLMW-03S
Shallow
01/31/2018
4.3
49.51
16
655
2.20
137
342
9.2
<5
<5
<0.1
<1
15.8
903
43.7
46.9
49.7
247
447
3170
<0.5
8.9
24.5
1.7
0.65
0.92
3.9
CLMW-03S
Shallow
04/27/2018
4.2
48.66
22
692
1.40
-21
184
7.2
<5
<5
<0.1
<1
4.4
832
40.4
49.6
41.4
239
480
2490
0.21 j
3.9
20.1
1.8
0.7
0.1 SI
1.7 SI
CLMW-03S
Shallow
07/31/2018
4.2
48.60
22
721
2.10
347
552
7.6
<5
<5
<0.1
<1
15.9
877
43.7
53.9
39.8
272
509
3070
<0.5
2.9 S1
26.2
1.7
0.71
0.079 S1
0.32 j,S1
CLMW-03S
Shallow
1O/29/2018
4.2
48.78
19
721
1.80
207
412
0.9
<5
<5
<0.1
<1
<5
952
47.4
52.1
30.1
260
506
2410
<0.5
2.9
16.3
1.4
1.7
0.07
0.26 j
CLMW-05S
Shallow
02/01/2018
5.3
36.31
16
126
0.20
167
372
9.7
6.2
6.2
<0.1
<1
37.1
<50
2.47
26.9
21.6
3.6
58
765
<0.5
0.3
100
<0.1
0.3351
<0.025
0.75 SI
CLMW-05S
Shallow
05/03/2018
5.1
36.12
32
126
0.30
188
393
7.2
5.5
5.5
<0.1
<1
2.7
<50
2.53
27.9
24.1
4.6
63
132
<0.5
0.18
110
0.076 j
0.26
<0.025
0.34 j,SI
CLMW-05S
Shallow
08/03/2018
5.2
36.07
21
112
1.00
309
514
6.0
8
8
<0.1 M1
<1
<2.5
<50
3.22
25.9
33
4.7
74
142
<0.5
0.12
128
0.081j
0.35
<0.025
0.22j
CLMW-05S
Shallow
1O/24/2018
5.2
35.92
18
103
1.10
153
358
4.5
4 j
4 j
<0.1
<1
<2.6
<50
2
23.8
22.4
3.9
65
55 j
<0.5
0.089 j
96.8
0.057 j
0.27
<0.025
0.22 j
CLMW-06
Shallow
02/01/2018
5.4
4.87
13
35
2.50
210
415
7.0
5.6
5.6
<0.1
<1
5.6
<50
1.06
3.2
18
<1
33
244
<0.5
<0.1
30
<0.1
<0.08
0.14 S1
<0.5
CLMW-06
Shallow
05/04/2018
4.9
4.14
20
37
2.00
260
465
2.0
<5
<5
<0.1
<1
<2.5
<50
1.17 SI
3.2
15.6 SI
<1
31
65 j
<0.5
<0.1
25.3
0.071 j
<0.08
0.1 SI
0.24 j,SI
CLMW-06
Shallow
08/03/2018
5.3
4.46
24
37
1.30
-21
184
4.3
4.7 j
4.7 j
<0.1
<1
3.2
<50
1.07
3.4
16.1
<1
31
159
<0.5
<0.1
26.8
0.054 j
<0.08
0.13
0.24 j
CLMW-06
Shallow
1O/31/2018
4.5
4.60
21
39
1.80
200
405
6.1
4.3 j
4.3 j
<0.1
<1
<2.5
26.7 j
1.2
3.4
17.1
<1
39
<100
<0.5
0.042 j
28.3
0.073 j
<0.08
0.15
0.27 j,S1
GWA-01BRU
Deep
01/31/2018
7.1
14.97
14
146
2.00
-9
196
9.8
63.6
63.6
<0.1
<1
<2.6
<50
20.2
3.9
44.4
7.2
102
<100
<0.5
0.1
<5
<0.1
<0.08
0.12 S1
<0.5
GWA-01BRU
Deep
05/07/2018
7.1
12.90
18
152
1.60
8
213
3.7
64.4
64.4
<0.1
<1
<2.5
<50
22.1
3.9
44
7.8
<25
<100
<0.5
0.092 j
2.6 j
<0.1
<0.08
<0.025
0.18 j,51
GWA-01BRU
Deep
08/06/2018
7.0
12.44
27
157
1.10
-191
14
6.2
64.8
64.8
<0.1
<1
<2.5
<50
21.5
4.2
45.1
8.1
122
<100
<0.5
0.17
2.6 j
<0.1
<0.08
<0.025
<0.5
GWA-01BRU
Deep
11/02/2018
7.0
12.72
17
149
0.40
-3
202
9.4
66.4
66.4
<0.1
<1
<5
<50
21
4
45.6
7.6
109
<100
0.13 j
0.14
<5
<0.1
<0.08
0.14
1.4
GWA-02BR
Bedrock
01/30/2018
9.9
15.67
13
347
0.30
-70
135
1.3
77.7
64.7
<0.1
<1
<2.5
83.2
24.7
4.1
120
64.5
224
<100
<0.5
0.37 S1
10.8
<0.1
<0.08
<0.025
<0.5
GWA-02BR
Bedrock
05/03/2018
9.9
14.91
17
365
0.10
-107
98
2.2
56.5
40.1
<0.1
0.68 j
<2.5
85.9
29.5
4.1
133
71.7
196
<100
0.13 j
0.26
10.4
<0.1
<0.08
<0.025
<0.5
GWA-02BR
Bedrock
08/02/2018
11.3
15.02
22
1001
0.20
-192
13
1.3
221
2.4j
0.15
1.9
<2.5
75
10.4
5.8
202
78.5
396
99.9 j,S1
0.11j
0.89
18
<0.1
<0.08
0.025
0.29j
GWA-02BR
Bedrock
1O/30/2018
9.9
14.52
17
372
0.10
-288
-83
0.5
89.9
44.6
0.065j
1.2
<2.5
102
31.6
4.2
166
73.6
275
<100
0.46j
0.34
14
<0.1
<0.08
<0.025
<0.5
GWA-02BRU
Deep
01/30/2018
6.3
15.66
14
358
0.30
1 168
1 373
0.1
132
132
<0.1
<1
<2.5
123
50.9
4.3
149
63.1
259
<100
<0.5
0.24 S1
6.8
<0.1
<0.08
<0.025 M1,R1
<0.5
GWA-02BRU
Deep
05/03/2018
6.2
15.03
19
391
0.40
1 64
1 269
1.4
139
139
<0.1
<1
<2.5
121
59.4
4.8
157
69.9
268
<100
<0.5
0.18
5.5
<0.1
<0.08
<0.025
0. 14 j,S1
GWA-02BRU
Deep
08/02/2018
6.1
15.02
20
398
0.70
-191
15
1.0
137
137
<0.1
<1
<2.6
126
62.4 M1
4.9
169
73.4
269
<100
<0.5
0.2
6.2
<0.1
<0.08
<0.025
<0.5
GWA-02BRU
Deep
10/30/2018
6.3
14.56
19
387
0.30
29
234
0.1
128
128
<0.1
<1
<2.6
134
59.3
4.7
158
70.5
273
<100
<0.5
0.24
5.3
0.019j
<0.08
<0.025
<0.5
Page 16 of 45

TABLE 3-3
2018 COMPREHENSIVE GROUNDWATER QUALITY DATA
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS LLC, MOORESBORO NC
Analytical Parameters
INORGANIC PARAMETERS (TOTAL CONCENTRATION)
INORGANIC PARAMETERS (DISSOLVED CONCENTRATION WITH FILTER SIZE)
Cobalt
Copper
Iron
Lead
Lithium
Magnesium
Manganese
Mercury
Molybdenum
Nickel
Nitrate
+ Nitrite
Potassium
Selenium
Sodium
Thallium
Vanadium
Zinc
Aluminum
Antimony
Arsenic
Barium
Beryllium
Boron
Cadmium
Chromium
Cobalt
Reporting Units
ug/L
ug/L
ug/L
ug/L
ug/L
mg/L
ug/L
ug/L
ug/L
ug/L
mg-N/L
mg/L
ug/L
mg/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
15A NCAC 02L Standard
1*
1000
300
15
NE
NE
50
1
NE
100
NE
NE
20
NE
0.2*
0.3*
1000
NE
NE
NE
NE
NE
NE
NE
NE
NE
Background Threshold Values (Shallow Flow Zone)
10.65
6.569
765.3
1
NE
2.479
168.8
0.2
1
6.256
8.837
5
1
6.139
0.117
1.059
15
NE
NE
NE
NE
NE
NE
NE
NE
NE
Background Threshold Values (Deep Flow Zone)
9.041
9.453
559.7
1
NE
1.6
78.31
0.2
1
12.56
2.8
5
1
4.41
0.063
1.095
15.03
NE
NE
NE
NE
NE
NE
NE
NE
NE
Background Threshold Values (Bedrock Flow Zone)
1.497
5
6220
1
NE
2.328
89.4
0.2
1.716
5
0.92
5
1
1 7.42
0.1
0.37
10
NE
NE
NE
NE
NE
NE
NE
NE
NE
Sample ID
Sample Location
Aquifer Name
Sample
Collection Date
Analytical Results
CCR-US-04S CAMA
Shallow
O1/30/2018
127
0.88 SS
1170
0.9
6.8
14.5
2090
<0.2
<0.5
33.1
0.24
8.23
1.3
5.57
0.49
0.39S1
30.8
1940
<0.5
2.6
14
8
515
0.25
1.6
144
CCR-U5-05D
Bedrock
02/02/2018
14
NA
NA
0.06 j
7.3
11.7
NA
<0.2
0.34 j
NA
NA
8.28
<0.5
10.9
<0.1
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
CCR-U5-05D
Bedrock
05/08/2018
3.5
NA
NA
0.055 j
3.3
11.1
NA
<0.2
0.4 j
NA
NA
8.76
<0.5
11.7
<0.1
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
CCR-U5-06DA
Deep
02/02/2018
105
NA
NA
0.11
1.2
17.9
NA
<0.2
<0.5
NA
NA
15
<0.5
8.09
0.18
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
CCR-1.15-06DA
Deep
05/08/2018
105
NA
NA
0.031 j
0.93
16.5
NA
<0.2
<0.5
NA
NA
14
<0.5
7.31
0.15
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
CCR-1.15-06S
Shallow
02/02/2018
43
NA
NA
0.3
8.9
16
NA
<0.2 M1
<0.5
NA
NA
5.23
0.25 j
5.7
0.73
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
CCR-U5-06S
Shallow
05/08/2018
36.4
NA
NA
0.19
8
13
NA
<0.2
<0.5
NA
NA
4.81
0.26 j
5.45
0.6
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
CCR-1.15-0813
Deep
02/05/2018
187
NA
NA
0.98
19.9
32.8 E
NA
<0.2
<0.5
NA
NA
8.04
1.3
8.39
2.3
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
CCR-U5-08D
Deep
05/09/2018
179
NA
NA
0.3
18.2
31.6
NA
<0.2
<0.5
NA
NA
7.97
0.85
8.83
2.3
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
CCR-1.15-08S
Shallow
02/05/2018
35
NA
NA
0.15
1.1
68.7 E
NA
<0.2
<0.5
NA
NA
3.99
0.25 j
11.7
0.19
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
CCR-US-08S
Shallow
05/09/2018
35.5
NA
NA
0.27
1.1
57.3 MI
NA
<0.2
0.44 j
NA
NA
4.32
0.2 j
10.3 M1
0.27
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
CCR-1.15-09S
Shallow
02/05/2018
12.9
NA
NA
0.11
3.2
6.35
NA
<0.2
<0.5
NA
NA
1.78
<0.5
1.74
0.26
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
CCR-US-09S
Shallow
05/08/2018
2.6
NA
NA
<0.1
0.6
2.26
NA
<0.2
<0.5
NA
NA
1.21
<0.5
2.2
0.076 j
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
CCR-U5-10D
Deep
02/02/2018
1
NA
NA
<0.1
1
3.51
NA
<0.2
0.13 j
NA
NA
3.13
0.18 j
3.58
0.071 j
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
CCR-US-SOD
Deep
05/08/2018
0.85
NA
NA
0.029 j
0.96
3.53
NA
<0.2
<0.5
NA
NA
2.98
0.2 j
3.86
0.06 j
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
CCR-U5-105
Shallow
02/02/2018
1.6
NA
NA
0.071 j
0.81
2.33
NA
<0.2
<0.5
NA
NA
1.19
<0.5
4.09
0.079 j
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
CCR-US-SOS
Shallow
05/08/2018
1.7
NA
NA
0.07 j
1.6
2.07
NA
<0.2
<0.5
NA
NA
1.37
<0.5
3.48
0.051 j
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
CLMW-01
Shallow
02/01/2018
2.5
<0.5
254
0.1S1
0.9
0.696
204
<0.2
<0.5
4.9
0.024
6.62
0.76
10.6
0.53
<0.3
<10
121
<0.5
1.1
42.6
<0.1
1340
<0.08
3.2
2.4
CLMW-01
Shallow
05/04/2018
2.4
0.32 j
408
0.11 B
0.96
0.653
223
<0.2
0.095 j
4
0.023
6.56
0.56
10.4
0.47
<0.3
23.3 B
130
<0.5
0.81
50.8
0.089 j
1310
<0.08
1.4
2.4
CLMW-01
Shallow
08/01/2018
2.3
0.6
78.5
0.085 j
0.99
0.693
211
<0.2
<0.5
0.86
0.011 j
5.93
0.62
10.4
0.46
<0.3
6.6 j,B,2g,S1
121
0.11 j
0.76
42.5
0.085 j
1310
<0.08
0.47 j,S1
2.1
CLMW-01
Shallow
10/23/2018
2.3
0.78 SI
152
0.16
1.8 j,S1
0.61
214
<0.2
<0.5
3
<0.02
6.4
0.36 j
10.4
0.47
0.16 j
8.9 j
91.5 j
<0.5
0.58
40.1
0.061 j
1230
0.33
0.32 j
2
CLMW-02
Shallow
02/01/2018
NA
NA
52
NA
NA
27.2
1310
<0.2
NA
NA
0.12
11
NA
17
NA
NA
31.9 B
1480
NA
NA
33.3
NA
404
NA
NA
NA
CLMW-02
Shallow
04/27/2018
16.8
IA SI
139
0.37
5.8
27.3
1450
<0.2
<0.5
3.4
0.13
10.6
7.7
15.9
0.37
0.21 j,S1
28.3
1520
0.31 j
1.4
31.3
0.92
434
0.47
1.3 SS
17.3
CLMW-02
Shallow
08/O1/2018
17.9
0.83
<50
0.43
5.5
29.1
1680
<0.2
<0.5
2.2
0.14
10.5
4.9
15.6
0.42
<0.3
30.8 B
1660
<0.5
1.1
33.3
0.85
508
0.4
0.24 j,51
16.6
CLMW-02
Shallow
10/23/2018
17.4
1.3 SS
188
1.3
5.7 SI
27.7
1330
<0.2
<0.5
3.2
0.13
10.6
4.1
16.4
0.47
0.19 j
32.4
1560
<0.5
1
34.1
0.82
467
0.71
0.44 j
15.3
CLMW-03D
Deep
O1/31/2018
0.15
0.5151
468
0.1451
4.7
26.8
39
<0.2
<0.5
151
0.059
8.7
3
14.4
<0.1
0.42
11.5
<100
<0.5
0.45
39.5
0.41
720
0.19
0.53
0.13
CLMW-03D
Deep
04/27/2018
0.13
0.57 SS
466
0.065 j
4.7
30.4
42.3
<0.2
<0.5
1.2 SI
0.064
9
3.1
15.3
0.089 j
0.17 j,S1
10.6
<100
0.13 j
0.054 j
34.3
0.49
720
0.21
0.54 SI
0.1
CLMW-03D
Deep
08/07/2018
0.24
0.85
881
0.32
4.3
34.8
53.4
<0.2
0.068 j
1.3
0.06
9.8
2.5
15.6
0.11
0.47
13.6
<100
<0.5
0.12
27.8
0.45
877
0.22
0.34 j
0.084 j
CLMW-03D
Deep
10/29/2018
0.14
0.42 j
171
0.1
3.7
35.2
44.4
<0.2
<0.5
0.88
0.069 SI
9.9
2.1
15.7
0.082 j
0.24 j
12.7
<100
<0.5
0.093 j,B
29.5
0.39
904
0.29
0.26 j,S1
0.096 j
CLMW-03S
Shallow
O1/31/2018
40.3
1.3S1
307
0.46
10.3
29.5
2510
<0.2
0.59
3.4
0.15
<10 D3
4.2
10.7
0.34
1.1
67
1940
<0.5
4.6
18.6
1.7
766
0.7
6.8
42.9
CLMW-03S
Shallow
04/27/2018
41
0.45 j,51
140
0.56
10.3
26.2
2590
<0.2
<0.5
2.7
0.15
6.59
13
9.42
0.42 j,D3
0.18 j,51
57.2
2000
0.21 j
3.9
16
1.7
745
0.61
0.74 SS
40.4
CLMW-03S
Shallow
07/31/2018
40.8
0.33 j
550
0.47
9.4
25.3
3190
<0.2
<0.5
1.6
0.13
6.36
4
9.33
0.33
0.13 j
59.7
2060
<0.5
2.7 S1
15.8
1.7
799
0.67
0.31 j
39.9
CLMW-03S
Shallow
10/29/2018
35.7
0.13 j
<100
0.38
8.1
29.8
3790
<0.2
<0.5
1.2
0.18
5.7 j
2.5
9 j
0.3
<0.3
50.5
2180
<0.5
2.9
15.8
1.5
916
1.6
0.74 SS
35.7
CLMW-OSS
Shallow
02/O1/2018
55.3
<0.5
685
1.2
0.82
1.6
4550
<0.2
<0.5
3.1
<0.02
<5
<0.5
10
0.4
<0.3
11.3
<100
<0.5
0.21
91.6
<0.1
<50
0.28
<0.5
56.5
CLMW-05S
Shallow
05/03/2018
61.8
0.29 j,S1
252
0.89
0.92
1.86
4780
<0.2
<0.5
3.6
<0.02
3.23 j
<0.5
9.76
0.37
0.065 j,S1
9.5 j
<100
<0.5
0.14
102
0.081 j
<50
0.26
<0.5
69.3
CLMW-05S
Shallow
08/03/2018
60.8
1.6
146
0.97
1
1.96
5410
<0.2
<0.5
3.4
0.072
3.6 j
<0.5
10.5
0.36
0.078 j
18.5
66.4 j
<0.5
0.12
108
0.065 j
<50
0.38
0.18 j
64
CLMW-05S
Shallow
10/24/2018
48.5
0.12 j,S1
130
0.5
0.87 j,S1
1.6
4410
<0.2
<0.5
2.8
0.021 B,S1
2.9 j
<0.5
8.1
0.34
<0.3
8.1 j
<100
<0.5
0.1
106
0.07 j
<50
0.21
0.18 j,SI
59.7
CLMW-06
Shallow
02/O1/2018
12.4
0.64 S1
613
<0.1
1.2
0.795
206
<0.2
<0.5
7.2
0.97
<5
<0.5
<5
<0.1
<0.3
<10
129
<0.5
<0.1
23.6
<0.1
<50
<0.08
0.56 S1
13.5
CLMW-06
Shallow
05/04/2018
12
<0.5
96.6
<0.1
1.1
0.834
154
0.15 j,S1
<0.5
1.1 S1
1.1
<5
<0.5
2.96 j
0.08 j
0.077 j,S1
2.7 j,B
<100
<0.5
0.083 j
25.4
0.09 j
<50
<0.08
0.39 j
11.5
CLMW-06
Shallow
08/03/2018
11.4
0.2 j
452
<0.1
1.1
0.828
162
<0.2
<0.5
1
0.97
<5
<0.5
2.84 j
0.058 j
<0.3
3.2 j
<100
<0.5
<0.1
23.7
0.059 j
<50
<0.08
0.22 j,B
11.3
CLMW-06
Shallow
10/31/2018
11
0.15 j
46 j
<0.1
1.1 j,S1
0.85
157
0.14 j
<0.5
1.1
1.1
<5
<0.5
3.1 j
0.073 j
<0.3
35.2
<100
<0.5
0.068 j
26.2
0.06 j
<50
<0.08
0.24 j,S1
10.7
GWA-01BRU
Deep
O1/31/2018
0.22
0.63 S3
SIB
<0.1
2.9
1.18
48.4
<0.2
<0.5
0.78 51
<0.02
<5
<0.5
5.89
<0.1
<0.3
<10
<100
<0.5
<0.1
<5
<0.1
<50
<0.08
0.74
0.18
GWA-01BRU
Deep
05/07/2018
0.15
0.46 j
666
0.033 j
1.6
1.37
62.9
<0.2
0.23 j
0.68 B,S1
<0.02
<5
<0.5
6.99
<0.1
<0.3
<10
114
<0.5
0.11
2.7 j
<0.1
<50
<0.08
0.5 j
0.13
GWA-01BRU
Deep
08/06/2018
0.28
0.64
1090
0.059 j
2.9
1.28
89.1
<0.2
0.28 j
<0.5
<0.02
<5
<0.5
7.54
<0.1
<0.3
<10
<100
<0.5
0.091 j
3 j
<0.1
<50
<0.08
<0.5
0.2
GWA-01BRU
Deep
11/02/2018
0.26
0.55 S1
923
<0.1
4.5
1.3
69.4
<0.2
0.15 j
<0.5
<0.02
<5
<0.5
7
<0.1
0.086 j,S1
3.3 j
<100
<0.5
0.1
<5
<0.1
<50
<0.08
0.56 S1
0.19 S1
GWA-02BR
Bedrock
01/30/2018
0.13
<0.5
66.7
<0.1
34.5
2.36
32.2
<0.2
4
IA S3
0.094
29.3
<0.5
19.5
<0.1
<0.3
<10
<100
<0.5
0.31
8.5
<0.1
76
<0.08
<0.5
<0.1
GWA-02BR
Bedrock
05/03/2018
0.073 j,51
<0.5
28.3 j
0.046 j
31.1
2.16
14
<0.2
4
1
0.082
31.9
<0.5
19
<0.1
0.15 j,S1
<10
<100
0.13 j
0.28
10.1
<0.1
78.1
<0.08
<0.5
0.065 j
GWA-02BR
Bedrock
08/02/2018
0.073 j
0.38 j
<50
0.062 j,B
133
0.438
<5
<0.2
3.3
1.7
<0.02
134
0.14 j
42.3
<0.1
0.7
<10
61.3 j
0.11 j
0.69
16.9
<0.1
75.6
<0.08
<0.5
0.077 j
GWA-02BR
Bedrock
1O/30/2018
0.065 j
5
<50
<0.1
42.3
2.2
19
<0.2
3.2
0.99
<0.02
41.1
<0.5
22.1
<0.1
<0.3
5 j
<100
0.59
0.37
12.3
<0.1
91.7
<0.08
<0.5
0.066 j
GWA-02BRU
Deep
01/30/2018
0.51
<0.5
624
<0.1
11
5.5
160
<0.2
<0.5
1.9 S3
<0.02
<5
<0.5
14.7
<0.1
<0.3
<10
<100
<0.5
0.3
<5
<0.1
110
<0.08
<0.5
0.43
GWA-02BRU
Deep
05/03/2018
0.54
<0.5
272
<0.1
10.2
6
113
<0.2
0.22 j
2.3
<0.02
4.99 j
<0.5
11
<0.1
0.14 j,S1
<10
<100
<0.5
0.12
5 j
<0.1
118
<0.08
0.17 j,S1
0.43
GWA-02BRU
Deep
08/02/2018
0.58
<0.5
SIB
<0.1
11.4
6.15
123
<0.2
0.18 j
2.1
<0.02
4.99 j
<0.5
10.7
<0.1
<0.3
<10
<100
<0.5
0.15
5.6
<0.1
117
<0.08
0.2 j
0.46
IL GWA-02BRU
Deep
10/30/2018
1 0.55
1 2.9
445
<0.1
10.3
6.2
SOS
<0.2
0.16 j
3
<0.02
5 j
<0.5
10.6
<0.1
<0.3
5.1 j
1 <100
1 <0.5
0.22 B
5.7
0.021 j
128
<0.08
0.091 j,S1
0.55
Page 17 of 45

TABLE 3-3
2018 COMPREHENSIVE GROUNDWATER QUALITY DATA
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS LLC, MOORESBORO NC
Analytical Parameters
INORGANIC PARAMETERS (DISSOLVED CONCENTRATION WITH FILTER SIZE)
RADIONUCLIDES
OTHER PARAMETERS
Copper
Iron
Lead
Lithium
Manganese
Mercury
Molybdenum
Nickel
Phosphorus
Selenium
Strontium
Thallium
Vanadium
Zinc
Radium-226
Radium-228
Total
Radium
Uranium-238
Total Uranium
Uranium-238
(Dissolved)
Carbonate
Alkalinity
Fluoride
Phosphorus
Reporting Units
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
mg/L
ug/L
ug/L
ug/L
ug/L
ug/L
pCi/L
pCi/L
pCi/L
ug/mL
ug/mL
ug/mL
mg/L
mg/L
mg/L
15A NCAC 02L Standard
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
5^
NE
0.03^
NE
NE
2
NE
Background Threshold Values (Shallow Flow Zone)
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
2.58
NE
0.0005
NE
5
NE
NE
Background Threshold Values (Deep Flow Zone)
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
1.51
NE
0.0005
NE
5
NE
NE
Background Threshold Values (Bedrock Flow Zone)
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
3.1
NE
0.0005
NE
5
NE
NE
Sample ID
Sample Location
Aquifer Name
Sample
Collection Date
Analytical Results
CCR-US-04S CAMA
Shallow
O1/30/2018
1.2
<50
0.78
NA
1950 MS
<0.2
<0.5
38.9
<0.05
1.8
525
0.58
0.3
25.5
NA
NA
NA
NA
NA
NA
<5
0.49
<0.05
CCR-1.15-0513
Bedrock
02/02/2018
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
0.195
0.293
0.488
NA
NA
NA
NA
0.12
NA
CCR-U5-05D
Bedrock
05/08/2018
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
0.418 U
0.181 U
0.599 U
NA
NA
NA
NA
0.21
NA
CCR-U5-06DA
Deep
02/02/2018
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
0.178
0.581
0.759
NA
NA
NA
NA
<0.1
NA
CCR-1.15-06DA
Deep
05/08/2018
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
0.0606 U
0.218 U
0.279 U
NA
NA
NA
NA
<0.1 MI
NA
CCR-1.15-06S
Shallow
02/02/2018
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
0.485
0.162
0.647
NA
NA
NA
NA
0.12
NA
CCR-U5-06S
Shallow
05/08/2018
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
0.142 U
0.552 U
0.694 U
NA
NA
NA
NA
0.12
NA
CCR-1.15-0813
Deep
02/05/2018
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
0.308
1.37
1.678
NA
NA
NA
NA
1.5
NA
CCR-U5-08D
Deep
05/09/2018
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
0.504 U
0.85
1.35
NA
NA
NA
NA
1.4
NA
CCR-1.15-08S
Shallow
02/05/2018
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
0.242
0.324
0.566
NA
NA
NA
NA
<0.1
NA
CCR-US-08S
Shallow
05/09/2018
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
0 U
0.458 U
0.458 U
NA
NA
NA
NA
<0.1
NA
CCR-1.15-09S
Shallow
02/05/2018
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
0.576
0.382
0.958
NA
NA
NA
NA
<0.1
NA
CCR-US-09S
Shallow
05/08/2018
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
0 U
0.446 U
0.446 U
NA
NA
NA
NA
<0.1
NA
CCR-U5-10D
Deep
02/02/2018
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
0.131
0.146
0.277
NA
NA
NA
NA
<0.1
NA
CCR-US-SOD
Deep
05/08/2018
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
0.245 U
0.469 U
0.714 U
NA
NA
NA
NA
<0.1
NA
CCR-U5-105
Shallow
02/02/2018
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
0.485
0.625
1.11
NA
NA
NA
NA
<0.1
NA
CCR-US-SOS
Shallow
05/08/2018
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
0 U
0.395 U
0.395 U
NA
NA
NA
NA
<0.1
NA
CLMW-01
Shallow
02/01/2018
<0.5 B
<50
<0.1
NA
185
<0.2
<0.5
4.1
<0.05
0.77
806
0.53
<0.3
<10
0.168
1.23
1.398
<0.0005
<0.0005
NA
<5
<0.1
<0.05
CLMW-01
Shallow
05/04/2018
7.8
43j
0.053j
NA
196
<0.2
<0.5
2.8
<0.05
1.9
878
0.42
<0.3
9j
0.747 U
0.768 U
1.52 U
0.000057j
0.000057j
0.000041j
<5
<0.1
0.078
CLMW-01
Shallow
08/01/2018
2.4
<50
0.047 j
NA
184
<0.2
<0.5
1.1 S1
<0.05
0.62
867
0.42
0.088 j,B
4.3 j
0.597 U
1.2
1.8
<0.0005
<0.0005
<0.0005
<5
<0.1
<0.05
CLMW-01
Shallow
10/23/2018
1.4 S1
<50
<0.1
NA
179
<0.2
<0.5
1.8
<0.05
0.37 j
795
0.42
<0.3
10.4
0.804
0.086 U
0.89 U
NA
<0.0005
NA
<5
<0.1
<0.05
CLMW-02
Shallow
02/O1/2018
NA
<50
NA
NA
1220
<0.2
NA
NA
<0.05
NA
70.3
NA
NA
31.2
NA
NA
NA
NA
NA
NA
<5
0.34
<0.05
CLMW-02
Shallow
04/27/2018
11.8
26.2 j
0.33
NA
1260
<0.2
<0.5
3.8
<0.05
7.7
76.2
0.39
0.077 j,S1
35.8
NA
NA
NA
NA
NA
NA
<5
0.39
<0.05
CLMW-02
Shallow
08/01/2018
0.81 SI
<50
0.36
NA
1480
<0.2
<0.5
2.3 S1
<0.05
4.8
88.7
0.39
<0.3
25.4
NA
NA
NA
NA
NA
NA
<5
0.42
<0.05
CLMW-02
Shallow
10/23/2018
3.1
<50
0.9
NA
1190
<0.2
<0.5
3.2
<0.05
4.1
91.4
0.4
<0.3
39.8
NA
NA
NA
NA
NA
NA
<5
0.48
<0.05
CLMW-03D
Deep
O1/31/2018
<0.5
<50
<0.1
NA
29
<0.2
<0.5
0.81
<0.05
3
282
<0.1
<0.3
<10
0.334
0.893
1.227
<0.0005
<0.0005
NA
<5
<0.1
<0.05
CLMW-03D
Deep
04/27/2018
0.66 SI
<50
0.03j
NA
32.9
<0.2
<0.5
1
<0.05
2.9
278
0.096j
0.087 j,S1
9.2j
0.753
1.11
1.86
<0.0005
<0.0005
<0.0005
<5
<0.1 MI
<0.05
CLMW-03D
Deep
08/07/2018
1.8
<50
0.062 j
NA
38
<0.2
<0.5
0.6
<0.05
2.7
249
0.1
<0.3
10.3
0.474
0.204 U
0.678 U
<0.0005
<0.0005
<0.0005
<5
<0.1 M1
<0.05
CLMW-03D
Deep
10/29/2018
1.5
<50
<0.1
NA
36
<0.2
<0.5
0.59
<0.05
2.4
294
0.081 j
<0.3
12.4
0.584 U
0.779
1.36
NA
<0.0005
NA
<5
<0.1
<0.05
CLMW-03S
Shallow
01/31/2018
IA SI
<50
0.36 SI
NA
2040
<0.2
<0.5
5.9
<0.05
4.5
39.5
0.36
<0.3
59.1
0
0.0963
0.0963
<0.0005
<0.0005
NA
<5
0.73
<0.05
CLMW-03S
Shallow
04/27/2018
3
<50
0.42 j,D3
NA
2330
<0.2
<0.5
2.6
<0.05
12.2
34.4
0.32 j,D3
0.2 j.S1
54.2
0.192 U
0.641 U
0.833 U
0.00021 j
0.00021 j
0.0002 j
<5
0.6
<0.05
CLMW-03S
Shallow
07/31/2018
4.3
<50
0.43
NA
3100
<0.2
<0.5
1.6
<0.05
4.1
38.8
0.32
<0.3
56.3
0.863 U
0.379 U
1.24 U
0.0002j
0.0002j
0.00019j
<5
0.72
<0.05
CLMW-03S
Shallow
10/29/2018
1.8
<50
0.36
NA
3770 M1
<0.2
<0.5
1.8
<0.05
2.9
36
0.32
<0.3
48.7 M1
0.581
0.735 U
1.32
NA
0.00019 j
NA
<5
0.53
<0.05
CLMW-OSS
Shallow
02/O1/2018
0.84 B,S1
94.4
0.72
NA
4410
<0.2
<0.5
3
<0.05
<0.5
19.8
0.39
<0.3
10.1
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
CLMW-05S
Shallow
05/03/2018
2.6
165
0.67
NA
4600
<0.2
<0.5
4
<0.05
<0.5
22.8
0.46
0.065j
11.6 B
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
CLMW-05S
Shallow
08/03/2018
2.5
63.6
0.86
NA
4740
<0.2
<0.5
3.6
<0.05
<0.5
27.5
0.36
0.073 j
15.6
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
CLMW-05S
Shallow
10/24/2018
0.73 SI
116
0.56
NA
4870 MI
<0.2
<0.5
3.3
<0.05
<0.5
22.5
0.35
<0.3
9 j,S1
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
CLMW-06
Shallow
02/O1/2018
0.5 SI
216
<0.1
NA
168
<0.2
<0.5
8.4
<0.05
<0.5
14.2
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
CLMW-06
Shallow
05/04/2018
0.8
<50
<0.1
NA
147
<0.2
<0.5
1.2
<0.05
<0.5
16.5
0.079 j
0.31
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
CLMW-06
Shallow
08/03/2018
0.94
<50
<0.1
NA
144
<0.2
<0.5
1
<0.05
<0.5
15.6
0.06 j
<0.3
2.6 j
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
CLMW-06
Shallow
10/31/2018
0.48 j,51
<50
<0.1
NA
140
<0.2
<0.5
1.4
<0.05
<0.5
16.5
0.056 j
<0.3
28.2
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-01BRU
Deep
O1/31/2018
0.9 S1
302
<0.1
NA
37.7
<0.2
<0.5
1.6
<0.05
<0.5
46.4
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-01BRU
Deep
05/07/2018
0.86 B
276
0.1
NA
47.5
<0.2
0.3 j
1.3
<0.05
<0.5
42.6
<0.1
0.082 j,B
4.2 j,B
NA
NA
NA
NA
NA
NA
<5
0.052 j
<0.05
GWA-01BRU
Deep
08/06/2018
0.64
423
0.049 j
NA
60.6
<0.2
0.26 j
<0.5
<0.05
<0.5
41.7
<0.1
<0.3
2.6 j
NA
NA
NA
NA
NA
NA
<5
0.061 j
0.038 j
GWA-01BRU
Deep
11/02/2018
0.23 j,S1
452
<0.1
NA
44.2
<0.2
0.14 j,SI
0.79 SI
<0.05
<0.5
41.5
<0.1
<0.3
5.9 j
NA
NA
NA
NA
NA
NA
<5
<0.1
0.026 j
GWA-02BR
Bedrock
01/30/2018
0.5
<50
<0.1
NA
24.3
<0.2
3.9
1.1
<0.05
<0.5
110
<0.1
<0.3
<10
0.329
0.126
0.455
<0.0005
<0.0005
NA
13
<0.1
<0.05
GWA-02BR
Bedrock
05/03/2018
<0.5
<50
<0.1
NA
12.9
<0.2
3.8
0.96
<0.05
<0.5
124
<0.1
0.18 j
<10
0.388 U
0.779 U
1.17 U
0.00019 j
0.00019 j
0.00017 j
16.4
0.089 j
<0.05
GWA-02BR
Bedrock
08/02/2018
0.2 j,S1
<50
0.051 j,S1
NA
<5
<0.2
3.7
1.5 SS
<0.05
0.18j
180
<0.1
0.48
<10
0.796
1.05 SI
1.85
<0.0005
<0.0005
0.00012j
218
0.1
0.028j
GWA-02BR
Bedrock
1O/30/2018
0.12 j,S1
<50
<0.1
NA
16.5
<0.2
3
1.3
<0.05
<0.5
144
<0.1
0.12 j
<10
0.577 U
1.33 S1,B
1.91
NA
0.00011 j
NA
45.2
0.084 j
<0.05
GWA-02BRU
Deep
01/30/2018
<0.5
444
<0.1
NA
116
<0.2
<0.5
1.8
<0.05
<0.5
134
<0.1
<0.3
<10
0.0617
0.699
0.7607
<0.0005
<0.0005
NA
<5
<0.1
<0.05
GWA-02BRU
Deep
05/03/2018
0.2j
180
0.029j
NA
123
<0.2
0.19j
2
<0.05
<0.5
142
<0.1
<0.3
<10
0.267 U
0.401 U
0.668 U
0.00063
0.00063
0.00063
<5
<0.1
<0.05
GWA-02BRU
Deep
08/02/2018
0.21 j,S1
350
<0.1
NA
120
<0.2
0.17j
2.1 S1
<0.05
<0.5
152
<0.1
<0.3
<10
0.221 U
1.35 S1
1.57
0.00056
0.00056
0.00052
<5
<0.1
<0.05
GWA-02BRU
Deep
10/30/2018
0.68 S1
434
<0.1
NA
127
<0.2
0.17 j
2.3
<0.05
<0.5
156
<0.1
<0.3
3.4 j,S1
0.257 U
0.592 U
0.849 U
NA
0.00052
NA
<5
<0.1
<0.05
Page 18 of 45

TABLE 3-3
2018 COMPREHENSIVE GROUNDWATER QUALITY DATA
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS LLC, MOORESBORO NC
Analytical Parameters
FIELD PARAMETERS
WATER QUALITY PARAMETERS
SELECTED 40CFR257 APPENDIX III CONSTITUENTS plus Sr
INORGANIC PARAMETERS (TOTAL CONCENTRATION)
pH
Water
Level
Temp
Spec
Cond
DO
ORP
Eh
Turbidity
Alkalinity
Bi-
carbonate
Alkalinity
Sulfide
Total
Organic
Carbon
Total
Suspended
Solids
Boron
Calcium
Chloride
Strontium
Sulfate
Total
Dissolved
Solids
Aluminum
Antimony
Arsenic
Barium
Beryllium
Cadmium
Chromium
(VI)
Chromium
Reporting Units
S.U.
ft
Deg C
umhos/cm
mg/L
mV
mV
NTUs
mg/L
mg/L
mg/L
mg/L
mg/L
ug/L
mg/L
mg/L
ug/L
mg/L
mg/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
15A NCAC 02L Standard
6.5-8.5
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
700
NE
250
NE
250
Soo
NE
1*
SO
700
4*
2
SO
10
Background Threshold Values (Shallow Flow Zone)
4.4-6.1
NE
NE
NE
NE
NE
NE
NE
13.67
14.42
0.1
1
NE
50
3.221
7.7
36.71
1.169
75.47
253
1
0.5
73.03
0.188
1
0.452
3.968
Background Threshold Values (Deep Flow Zone)
4.8-6.1
NE
NE
NE
NE
NE
NE
NE
19.74
18.13
0.1
1
NE
50
11
5.1
56.14
10
70.98
290
1
0.763
23
0.2
1
0.16
1.791
Background Threshold Values (Bedrock Flow Zone)
5.4-7.4
NE
NE
NE
NE
NE
NE
I NE
53
68.82
1 0.1
1
NE
50
16
8.656
107.1.
15.1
1.20
208.2
1
1
19.33
1
1
0.12
3.567
Sample ID
Sample Location
Aquifer Name
Sample
Collection Date
Analytical Results
GWA-02S
Shallow
O1/30/2018
5.8
14.49
14
283
0.30
84
289
1.4
64.1
64.1
<0.1
<1
<2.5
129
30.8
5.1
128
65.1
182
189
<0.5
<0.1
28.7
<0.1
0.096
0.19 Sl
<0.5
GWA-02S
Shallow
05/03/2018
5.6
13.24
16
277
0.70
163368
2.5
65.7
65.7
<0.1
0.57j
<2.5
125
31.4
5.3
129
70.3
178
193
<0.5
0.076j
27.4
0.059j
0.088
0.22
0.49 j,S1
GWA-02S
Shallow
08/02/2018
4.2
13.58
20
280
0.70
-98107
2.9
65.1
65.1
<0.1 RI
<1
<2.5
133
32.5
5.1
138
70.1
198
111 SI
<0.5
0.065 j
29.6
0.044 j
0.1
0.2
0.36 j
GWA-02S
Shallow
10/30/2018
5.8
13.20
17
279
0.40
169374
0.6
63.1
63.1
<0.1
0.66j
<2.6
147
34
5
140
69.3
194
91.3j
<0.5
0.14
30.7
0.045j
0.12
0.2 SI
0.52
GWA-03D
Deep
02/01/2018
5.8
62.26
16
473
0.60
134339
9.7
39.3
39.3
<0.1
<1
<2.5
367
57.5
5.6
224
188
365
487
NA
NA
21.3
NA
NA
0.13
NA
GWA-03D
Deep
04/30/2018
5.7
61.53
21
496
0.90
1501355
9.0
36
36
<0.1
<1
4.6
401
56.7
6.1
220
184
358
203
<0.5
0.28 SI
15.5
0.23
0.24
0.39 SI
9.1
GWA-03D
Deep
08/08/2018
5.7
61.00
20
473
0.70
193
398
9.1
34.7
34.7
<0.1
<1
2.8
410
56.5
6.2
240
180
358
159
<0.5
0.28
14.8
0.23
0.23
0.58
1.3 B
GWA-03D
Deep
11/02/2018
5.9
60.11 Top of Pump
17
504
4.40
205
410
9.4
47.3
47.3
<0.1
0.97 j
<2.5
424
61.3
6.3
251
192
392
<100
<0.5
0.2
15
0.18
0.25
0.2
0.53 S1
GWA-04D
Deep
O1/29/2018
5.5
5.83
16
551
0.50
86
291
2.7
29.3
29.3
<0.1
<1
<5
173
61.4
6
445
248
415
123
<0.5
0.61 S1
30.4
1.8
<0.08
<0.025
<0.5
GWA-04D
Deep
05/03/2018
5.5
5.56
29
575
0.40
53
258
3.8
17.7
17.7
<0.1
<1
<2.5
170
62
6.4
466
254
425
107
<0.5
0.41
31.7
1.8
<0.08
<0.025
0.2 j,S1
GWA-04D
Deep
07/31/2018
5.3
5.63
24
572
0.80
-125
80
5.3
26.4
26.4
<0.1
<1
<2.5
167
58.6
6.4
447
216
439
127
<0.5
0.34 S1
29.3
1.8
<0.08
<0.025
<0.5
GWA-04D
Deep
10/22/2018
5.5
5.60
20
538
0.50
-42
163
3.3
27
27
<0.1
0.67j
<2.6
175
54.7
6.2
445
225
429
118
<0.5
0.36
27.8
1.7
0.093
<0.025
0.2 j,S1
GWA-04S
Shallow
01/29/2018
4.3
4.53
17
482
0.30
181
386
3.2
<5
<5
<0.1
<1
<2.5
189
34.2
5.8
599
214
363
3310
<0.5
1.3
17.3
2.6
<0.08
<0.025
<0.5
GWA-04S
Shallow
05/03/2018
4.2
4.10
28
516
0.30
130
335
4.7
<5
<5
<0.1
<1
<2.6
150
39
6.1
500
227
367
3470
<0.5
0.91
15.2
1.9
0.046j
<0.025
0.14 j,S1
GWA-04S
Shallow
07/31/2018
4.2
4.46
27
493
0.80
141
346
2.6
<5
<5
<0.1
<1
<2.5
177
36.9
6.2
587
199
370
3170
<0.5
0.85 SI
16.1
2.3
0.072j
<0.025
0.27 j,S1
GWA-04S
Shallow
10/22/2018
4.4
4.40
20
483
1.20
193
398
0.2
<5
<5
<0.1
<1
<2.5
190
33.3
6.2
570
212
363
3050
<0.5
0.99
17
2.3
0.17
<0.025
0.7 S1
GWA-05BRU
Deep
01/29/2018
7.2
22.58
18
677
0.50
-134
71
1.4
323
323
2.5
13.3
2.9
<50
82.4
10.8
207
53.1
429
<100
<0.5
0.56 S1
27.7
<0.1
<0.08
<0.025
<0.5
GWA-05BRU
Deep
04/27/2018
7.3
21.91
23
699
0.60
-232
-27
0.5
326
326
1.4
16.9
<2.8
35.6j
82.6
10.7
219
47.1
444
<100
<0.5
0.29 SI
28.7
<0.1
<0.08
0.043 S1
0.25 j,S1
GWA-05BRU
Deep
07/30/2018
7.3
20.64
23
630
0.90
-98
107
1.7
305
305
0.34
8.3
10.9
32.4j
82.2
10.9
209
65
432
328 SI
0.15j
0.51 S1
25.9
<0.1
<0.08
0.072 S1
0.88
GWA-05BRU
Deep
10/26/2018
7.3
21.84
9
649
0.40
-185
20
1.0
286
286
0.63
10.8
<2.5
30.5j
86.8
10.4
204
52.6
438
64.4j
<0.5
0.36
31.3
<0.1
<0.08
0.063
0.48j
GWA-05S
Shallow
01/29/2018
5.3
21.50
16
1003
0.40
183
388
6.8
24
24
<0.1
1.3
<2.5
<50
121 M1
4.3
127
747
778
271
<0.5
0.52 S1
24.4
0.16
0.14
3.1 P4,R0
4
GWA-05S
Shallow
04/27/2018
5.2
19.78
19
986
0.90
-98
107
7.9
21.3
21.3
<0.1
1.9
<5
<50
115
6.4
116
433
770
622
<0.5
0.44 S1
27
0.2
0.19
0.78 S1
1.4 S1
GWA-05S
Shallow
07/30/2018
5.1
20.98
19
999
1.00
219
424
1.0
25.4
25.4
<0.1
1.9
<2.5
<50
106 M1
6.6
112
475
803
99 j,SI
<0.5
0.63 S1
20.8
0.18
0.14
1.7
2.8
GWA-05S
Shallow
10/26/2018
5.2
21.21
9
970
0.90
86
291
4.0
20.6
20.6
<0.1
1.7
<2.5
<50
111
5.6
106
502
786
165
<0.5
0.3
22.5
0.19
0.3
1.3 M6
2.6
GWA-SOD
Deep
O1/30/2018
6.0
20.12
15
171
0.30
6
211
2.1
44.2
44.2
<0.1
<1
<2.5
<50
16.4
7.9
156
29.1
121
<100
<0.5
<0.1
40.3
<0.1
<0.08
0.6 SI
0.88 SI
GWA-101)
Deep
05/02/2018
5.9
19.30
20
170
0.30
-276
-71
0.6
44
44
<0.1
<1
<2.5
<50
16.4
7.6
127
22.9
127
<100
<0.5
0.11 SI
31.5
<0.1
0.059j
0.44 SI
2.7
GWA-IOD
Deep
08/06/2018
6.0
19.36
21
170
0.30
117
322
0.7
39.6
39.6
<0.1
<1
<2.5
<50
16.2
8.5
138
25
121
<100
<0.5
0.11
35
0.041j
0.054j
1.1
1.1
GWA-101)
Deep
10/24/2018
5.9
19.07
17
169
0.30
48
253
1.9
41
41
<0.1
<1
<2.5
<50
16.5
7.9
137
23.1
126
<100
<0.5
0.079j
35.1
0.019j
0.054j
0.66
0.81
GWA-10S
Shallow
O1/30/2018
5.3
20.05
14
348
0.60
91
296
7.7
11.9
11.9
<0.1
<1
3.6 SI
114
33.9
11.3
229
136
241
584
<0.5
0.53 SI
56
0.31
0.33
<0.025
<0.5
GWA-10S
Shallow
05/02/2018
5.2
19.43
19
333
0.40
30
235
5.1
3j
3j
<0.1
<1
<2.5
104
33.8
14.7
213
107
244
269
<0.5
0.34 S1
46.4
0.45
0.29
0.029 SI
0.42 j,S1
GWA-10S
Shallow
08/06/2018
5.0
19.40
21
317
0.40
-95
110
7.7
8.6
8.6
<0.1
<1
<2.5
122
30.7
16
203
108
225
663
<0.5
0.44
43
0.76
0.26
0.046
0.3j
GWA-10S
Shallow
10/24/2018
5.1
19.11
17
270
0.90
-93
112
9.0
6
6
<0.1
<1
4.3
99.3
24.8
12.6
210
86.8
187
828
<0.5
0.44
44.5
0.76
0.38
0.051
0.3j
GWA-11BRU
Deep
O1/30/2018
6.5
16.48
14
500
0.10
117
322
1.7
66.1
66.1
<0.1
<1
<5
372
55
35.4
303
131
319
<100
<0.5
0.24 S1
13.6
<0.1
<0.08
0.23 S1
0.92 S1
GWA-11BRU
Deep
05/02/2018
6.5
15.69
23
545
2.80
132
337
1.2
63.9
63.9
<0.1
<1
<2.5
392
56.7
40.8
287
105
325
<100
<0.5
0.077 j,S1
11.4
<0.1
<0.08
0.09 SI
0.2 j,S1
GWA-11BRU
Deep
08/03/2018
6.4
15.60
24
503
3.00
111
316
0.2
58.5
58.5
<0.1
<1
<5
421
57.3
46.2
314
96.1
329
<100
<0.5
0.1
12.5
<0.1
<0.08
0.23
0.47j
GWA-11BRU
Deep
10/25/2018
6.3
16.91
16
474
0.30
30
235
1.8
63.8
63.8
<0.1
0.72j
<2.5
358
52.3
40.2
276
101
314
<100
0.81
0.2
13.9
0.013j
<0.08
<0.025
0.2 j,S1
GWA-IIS
Shallow
O1/30/2018
5.9
16.34
19
447
0.20
58
263
7.9
32.1
32.1
<0.1
<1
3.4 SI
404
47.4
47
543
107
280
380
<0.5
0.43 SI
42.4
<0.1
0.23
<0.025
<0.5
GWA-11S
Shallow
05/02/2018
6.1
15.51
20
458
0.40
46
251
3.8
39.2
39.2
<0.1
<1
2.5
390
50.9
46.6
543
103
299
1130
<0.5
0.85 SI
41.6
0.1
0.35
<0.025 M1
2.7
GWA-IIS
Shallow
08/03/2018
5.8
15.48
21
429
0.10
105
310
5.9
36.6
36.6
<0.1
<1
<2.5
442
48.5
42.3
528
93
286
135
<0.5
0.21
41.1
<0.1
0.18
<0.025
0.25j
GWA-11S
Shallow
10/25/2018
5.9
15.76
17
450
0.40
-44
161
5.2
50.5
50.5
<0.1
0.59 j,MI
<2.5
394
51.8
34.8 M1
621
112
307
71.6 j
<0.5
0.63
38.8
0.047 j
0.19
<0.025
0.17 j,S1
GWA-12BRU
Deep
O1/30/2018
6.0
39.29
13
127
0.10
28
233
3.9
31
31
<0.1
<1
<2.5
<50
8.5
14.7
47.2
10.3 MI
93
<100
<0.5
1.1
10.4
<0.1
<0.08
<0.025
<0.5
GWA-12BRU
Deep
05/02/2018
5.9
37.52
26
134
0.25
24
229
0.7
30.1
30.1
<0.1
<1
<2.5
<50
9.08
15.6
47.3
8.6
109
<100
<0.5
<0.1
9.1
0.06 j
<0.08
<0.025
0.17 j,S1
GWA-12BRU
Deep
08/02/2018
6.1
38.15
26
145
0.30
29
234
2.5
32.8
32.8
<0.1
<1
<2.5
<50
10.1
21.4
54.6
8.7
102
<100
<0.5
0.048 j
8.7
<0.1
<0.08
<0.025
<0.5
GWA-12BRU
Deep
10/23/2018
5.9
37.87
18
147
0.70
23
228
2.4
30.6
30.6
<0.1
<1
<2.5
<50
9.3
21.4
50.4
7.8
96
<100
0.3 j
0.085 j
8
0.017 j
<0.08
<0.025
0.16 j,B,SI
GWA-12S
Shallow
O1/30/2018
5.7
29.28
10
137
3.50
124
329
3.4
15.4
15.4
<0.1 RI
<1
<2.5
<50
9.05
23
16.4
11.1
76
<100
<0.5
0.19 SS
16.1
<0.1
<0.08
0.049 SI
<0.5
GWA-12S
Shallow
05/02/2018
5.6
27.78
25
139
4.30
188
393
7.1
16.1
16.1
<0.1
<1
<2.5
<50
9.64
21.9
18.4
9.7
89
170
<0.5
0.11 S1
17.7
0.038 j
<0.08
0.037 S1
0.33 j,S1
GWA-12S
Shallow
08/02/2018
5.9
28.21
27
145
2.60
125
330
6.0
20.1
20.1
<0.1
<1
<2.5
<50
10.2
24
20.3
13.3
94
200 SI
<0.5
0.054 j
19.1
<0.1
<0.08
0.051
0.71
GWA-12S
Shallow
10/23/2018
5.3
27.97
18
147
2.80
-49
156
2.8
17.2
17.2
<0.1
<1
<2.5
<50
9.6
22.7
18.4
12.2
81
<100
<0.5
0.052 j
17.3
<0.1
<0.08
0.037
0.31 j,B,51
GWA-13BR
Bedrock
02/O1/2018
6.6
27.63
11
406
1.20
-69
136
7.1
95.9
95.9
0.1
<1
5.2
95.3
56.9
10.2
149
87.3
295
700
<0.5
0.13
67.2
<0.1
<0.08
0.025 S1
13
GWA-13BR
Bedrock
05/04/2018
6.5
25.74
22
454
0.70
1 9
1 214
2.0
1 95.8
1 95.8
1 <0.1
1 0.64 j
2.5
72.5
62.6
9.6
134
56.1
324
<100
<0.5
<0.1
59.3
0.055 j
<0.08
<0.025
0.44 j,S1
GWA-13BR
Bedrock
08/06/2018
6.5
25.95
35
471
0.60
1 -67
1 138
2.2
1 SOS
1 SOS
1 <0.1
I <1
3.3
88.8
66.3
10.6
172
113
336
<100
<0.5
1.2
75.1
0.055j
<0.08
<0.025
<0.5
GWA-13BR
Bedrock
11/01/2018
6.3
25.68
20
468
0.30
1 -52
1 1531
2.7
1 111
1 111
1 <0.1
1 0.57j
<2.5
85.8
66.6
10.2
165
97.9
327
<100
0.15j
<0.1
74.8
0.062j
<0.08
<0.025
0.67 B,BC,S1
GWA-14BR
Bedrock
01/29/2018
8.5
39.22
17
246
0.20
1 -34
1 1711
2.1
1 114
1 114
1 <0.1
I <1
<2.5
<50
31.7
3.4
118
21.5
148
<100
<0.5
0.58 SI
<5
<0.1
<0.08
<0.025
<0.5
Page 19 of 45

TABLE 3-3
2018 COMPREHENSIVE GROUNDWATER QUALITY DATA
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS LLC, MOORESBORO NC
Analytical Parameters
INORGANIC PARAMETERS (TOTAL CONCENTRATION)
INORGANIC PARAMETERS (DISSOLVED CONCENTRATION WITH FILTER SIZE)
Cobalt
Copper
Iron
Lead
Lithium
Magnesium
Manganese
Mercury
Molybdenum
Nickel
Nitrate
+ Nitrite
Potassium
Selenium
Sodium
Thallium
Vanadium
Zinc
Aluminum
Antimony
Arsenic
Barium
Beryllium
Boron
Cadmium
Chromium
Cobalt
Reporting Units
ug/L
ug/L
ug/L
ug/L
ug/L
mg/L
ug/L
ug/L
ug/L
ug/L
mg-N/L
mg/L
ug/L
mg/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
15A NCAC 02L Standard
1*
1000
300
15
NE
NE
50
1
NE
100
NE
NE
20
NE
0.2*
0.3*
1000
NE
NE
NE
NE
NE
NE
NE
NE
NE
Background Threshold Values (Shallow Flow Zone)
10.65
6.569
765.3
1
NE
2.479
168.8
0.2
1
6.256
8.837
5
1
6.139
0.117
1.059
15
NE
NE
NE
NE
NE
NE
NE
NE
NE
Background Threshold Values (Deep Flow Zone)
9.041
9.453
559.7
1
NE
1.6
78.31
0.2
1
12.56
2.8
5
1
4.41
0.063
1.095
15.03
NE
NE
NE
NE
NE
NE
NE
NE
NE
Background Threshold Values (Bedrock Flow Zone)
1.497
5
6220
1
NE
1 2.328
89.4
0.2
1.716
5
0.92
5
1
1 7.42
0.1
0.37
10
NE
NE
NE
NE
NE
NE
I NE
NE
NE
Sample ID
Sample Location
Aquifer Name
Sample
Collection Date
Analytical Results
GWA-02S
Shallow
01/30/2018
0.19
<0.5
343
<0.1
0.54
10.9
231
<0.2
<0.5
1.5 51
0.08
<5
<0.5
<5
0.12
<0.3
<10
<100
<0.5
<0.1
24.4
<0.1
120
0.1
0.72
0.2
GWA-02S
Shallow
05/03/2018
0.2 S1
<0.5
217
0.05 j
0.42 j
11
222
<0.2
<0.5
1.5
0.08
<5
<0.5
3.74 j
0.14
0.26 j,S1
<10
<100
<0.5
0.068 j
25.5
<0.1
116
0.085
0.61 SI
0.18
GWA-02S
Shallow
08/02/2018
0.17
0.16 j
176
<0.1
0.45 j
11
202
<0.2
<0.5
1.3
0.087
<5
<0.5
3.83 j
0.12
0.16 j
2.9 j
<100
<0.5
<0.1
26.3
0.038 j
123
0.072 j
0.47 j
0.25
GWA-02S
Shallow
10/30/2018
0.21
0.16 j
231
<0.1
0.44 j
11.7
263
<0.2
<0.5
1.6
0.088
2.7 j
<0.5
4.1 j
0.13
0.4
2.7 j
<100
<0.5
0.051 j,B
29
0.035 j
136
0.12
0.24 j,S1
0.18
GWA-03D
Deep
02/01/2018
NA
NA
1010
NA
NA
14
1380
<0.2
NA
NA
0.11
6.09
NA
8.78
NA
NA
<10 B
<100
NA
NA
12.5
NA
364
NA
NA
NA
GWA-03D
Deep
04/30/2018
3.4
1.2 SI
389
0.12 SI
4.4
14.1
1410
<0.2
0.3 j,51
30.4
0.082
6.29
<0.5
9.28
0.096 j
0.69
3.4 j,51
<100
<0.5
0.28
13.8
0.17
370
0.24
3.4
3.4
GWA-03D
Deep
08/08/2018
3.4
2.3
164
0.14
4.6
14.1
1500
<0.2
1.6
27.6
0.08
6.13
0.49 j
9.21
0.1
0.49
6.5 j,B
<100
<0.5
0.14
13.3
0.32
370
0.28
0.99
3.4
GWA-03D
Deep
11/02/2018
3.2
IA S3
<50
<0.1
5.2
14.8
1440
<0.2
0.26 j
28.6
0.097
6.4
<0.5
9.7
0.077 j
0.58 S3
3.4 j
<100
<0.5
0.18
14.2
0.15 S3
395
0.17
0.53 S3
2.8
GWA-04D
Deep
01/29/2018
98.6
<0.5
16400
<0.1
5.8
15.2
4430
<0.2
<0.5
40.5
0.047 51
7.38
<0.5
8.82
<0.1
<0.3
12.6
113
<0.5
0.47
31.4
1.8
168
<0.08
<0.5
96
GWA-04D
Deep
05/03/2018
91.3
0.27 j,S1
15800
0.044 j
9.2
14.6
4280
<0.2
<0.5
37.2
0.054
9.62
0.29 j
9.4
<0.1
0.23 j,S1
12
110
<0.5
0.38
28.1
1.9
153
<0.08
0.17 j,S1
86.4
GWA-04D
Deep
07/31/2018
94
<0.5
16800
<0.1
7.3
13.9
4300
<0.2
<0.5
38.6
0.044
7.7
0.22 j
8.57
<0.1
0.073 j
13.9
110
<0.5
0.36 SI
27.8
1.6
158
<0.08
0.2 j,B
82.6
GWA-04D
Deep
10/22/2018
92.3
0.18 j,S1
15200
<0.1
7.2
13.6
4240
<0.2
<0.5
39
0.055
7.4
<0.5
8.2
<0.1
0.14 j
15.2 B
103
<0.5
0.38 B,S1
26
1.8
161
0.072 j
0.16 j
82.2
GWA-045
Shallow
01/29/2018
72
1.2 SI
20900
0.54
6.6
14.9
2120
<0.2
<0.5
20.6
0.69
7
0.54
5.47
1.9 51
<0.3
31.3
2860
<0.5
1.9
16.9
2.4
179
<0.08
<0.5
67.9
GWA-04S
Shallow
05/03/2018
66.2
1.4
17200
0.46
5.6
15.5
1990
<0.2
<0.5
18.7
0.045
6.24
0.46 j
5.4
1.2
0.17 j,51
24.6
3100
<0.5
0.75
13.8
2
140
0.046 j
<0.5
58.5
GWA-04S
Shallow
07/31/2018
64
0.97
20000
0.47
5.2
14.7
2070
<0.2
<0.5
18.3
0.05
6.75
0.42 j
5.63
1.8
0.11 j
29.7
2800
<0.5
0.87 S1
14.9
2.3
167
0.067 j
0.24 j,B
66.3
GWA-04S
Shallow
10/22/2018
64.9
5.4
18300
0.49
5.5
13.7
1980
<0.2
<0.5
18.5
0.063
6.4
<0.5
5.5
2
0.42
34.4 B
2600
<0.5
0.88
14.6
2.4
180
0.17
0.16 j
64.9
GWA-05BRU
Deep
01/29/2018
<0.1
<0.5
163
<0.1
8.5
12.2
214
<0.2
<0.5
1.9
<0.02
9.47
<0.5
49
<0.1
0.39
<10
<100
<0.5
0.47
27.2
<0.1
<50
<0.08
<0.5
<0.1
GWA-05BRU
Deep
04/27/2018
0.042 j
<0.5
66
<0.1
8.7
12
206
<0.2
0.13 j
0.16 j,S1
<0.02
9.25
<0.5
52.7
<0.1
0.54 Si
<10
<100
<0.5
0.45
27.3
0.037 j
28.9 j
<0.08
0.38 j,S1
0.052 j
GWA-05BRU
Deep
07/30/2018
0.1
IA SI
804 RO
0.26
8.6
12
59.5 51
<0.2
0.8 51
1.5
<0.02
9.29
<0.5
48.4
<0.1
0.53 51
14 B
<100
0.15 j
0.29 SI
23.2
<0.1
28.9 j
<0.08
0.19 j,51
0.027 j
GWA-05BRU
Deep
10/26/2018
0.11
0.16 j
378
0.11
7.8
12.5
271
<0.2
0.17 j
1.2
<0.02
9
<0.5
43.8
<0.1
0.31
3.7 j
<100
<0.5
0.33
27.9
0.032 j
27.3 j
<0.08
0.46 j
0.1
GWA-05S
Shallow
01/29/2018
4
0.79 SI
239
<0.1
2.1
57.9
440
<0.2
<0.5
9.8
6
5.77
3.2
5.22
0.46 51
<0.3
<10
<100
<0.5
0.42
21.2
0.17
<50
0.14
3.7
3.9
GWA-05S
Shallow
04/27/2018
3.4
0.68 S1
535
0.06 j
2.2
54.2
492
<0.2
<0.5
8.8
5.2
5.45
3.2
5.08
0.4
0.52 S1
3.8 j
57 j
<0.5
0.41
19.4
0.18
<50
0.17
0.98 SI
3.2
GWA-05S
Shallow
07/30/2018
2.9
0.88 SI
41.5 j,RO
<0.1
1.6
55.9
535
<0.2
0.086 j,51
10
4.9
5.08
3.5
5.13
0.35
0.24 j,S1
4.2 j,B
53.5 j
<0.5
0.35 SI
20.8
0.16
<50
0.14
2.6
2.8
GWA-05S
Shallow
10/26/2018
2
1.3
102
<0.1
1.6 j
58.6
253
<0.2
<0.5
6.8
6.8
5.3
4.2
5.2
0.42
0.26 j
4.7 j
<100
<0.5
0.34
20.2
0.18
<50
0.3
2.8
2
GWA-10D
Deep
01/30/2018
3.4
<0.5
<50
<0.1
6.2
4.58
192
<0.2
<0.5
4.4
0.9
<5
<0.5
6.64
<0.1
0.53 51
<10
<100
<0.5
<0.1
33.4
<0.1
<50
<0.08
0.67
3.7
GWA-SOD
Deep
05/02/2018
3.2
0.27 j
<50
0.029 j
6.3 51
4.74
151
<0.2
0.2 j,51
4.4 51
0.76
3.52 j
0.26 j
6.64
<0.1
0.36 B,S1
2.8 j
<100
<0.5
0.11
32.1
<0.1
<50
0.048 j
0.82
3.7
GWA-10D
Deep
08/06/2018
3.3
0.29 j
<50
<0.1
7.2
4.52
187
<0.2
0.18 j
4.2
0.78
3.13 j
0.27 j
6.17
<0.1
0.23 j
4.3 j
<100
<0.5
0.092 j
32.7
0.043 j
<50
0.052 j
0.76
3.2
GWA-SOD
Deep
10/24/2018
3.4
0.38 j,S1
<50
<0.1
6.6
4.7
179
<0.2
0.15 j
4.8
0.81
3.3 j
<0.5
6.6
<0.1
0.31
4.8 j
<100
<0.5
0.053 j
31.2
0.015 j
<50
<0.08
0.72 SI
3.6
GWA-10S
Shallow
01/30/2018
14.3
<0.5
250
<0.1
3.5
9.35
1620
<0.2
<0.5
13.2
0.4
<5
1.1
8.66
0.21
0.3151
10.4
<100
<0.5
0.24
49.4
0.27
113
0.32
<0.5
13
GWA-SOS
Shallow
05/02/2018
10.6
0.16 j
85.7
0.039 j
3.5 S1
9.81
1150
<0.2
0.15 j,S1
11.7 SI
0.5
4.59 j
0.52
8.24
0.21
<0.3
5.7 j
136
<0.5
0.31
45.1
0.46
102
0.32
0.38 j
10.6
GWA-10S
Shallow
08/06/2018
11.8
0.34 j
276
0.1
5.2
8.83
1100
<0.2
0.17 j
10.8
0.48
3.9 j
0.57
7.61
0.21
0.19 j
10.6
205
<0.5
0.79
38.3
0.65
108
0.28
<0.5
10.5
GWA-10S
Shallow
10/24/2018
9
0.31 j,S1
220
0.11
6.3
8.1
835
<0.2
0.2 j
9.2
0.82
4.1 j
0.6
6.3
0.21
0.27 j
9.4 j
307
<0.5
0.42
38.7
0.66
91.7
0.32
0.11 j,S1
8.7
GWA-11BRU
Deep
01/30/2018
<0.1
1 SI
262
<0.1
20.8
11.4
758
<0.2
<0.5
9.3
0.036
12.3
<0.5
14.7
<0.1
<0.3
<10
<100
<0.5
0.21
13
<0.1
363 MI
<0.08
<0.5
0.38
GWA-11BRU
Deep
05/02/2018
0.29
0.25 j
389
<0.1
17 S3
11.9
609
<0.2
0.13 j,S1
2.9 S3
0.3
11.7
<0.5
14.7
<0.1
0.17 j,B,SI
<10
<100
<0.5
0.1
11.6
<0.1
325
<0.08
0.4 j
0.46
GWA-11BRU
Deep
08/03/2018
0.052 j
0.19 j
327
<0.1
13.3
12.2
452
<0.2
0.092 j
0.89
0.058
12.1
<0.5
15.4
<0.1
<0.3
2.5 j
<100
<0.5
0.084 j
10.3
<0.1
344
<0.08
0.31 j,B
0.27
GWA-11BRU
Deep
10/25/2018
0.53
0.19 j
621
<0.1
6.5
10.9
1250
<0.2
0.21 j
3.2
<0.02
6.2
<0.5
12.5
<0.1
<0.3
6.2 j
<100
0.29 j
0.18
12.3
0.017 j
334
<0.08
0.16 j
0.62
GWA-11S
Shallow
01/30/2018
1
0.87 SI
529
0.19
2.3
10.6
2120
<0.2
1.1
4.2
<0.02
5.43
<0.5
13.2
<0.1
0.68 SS
<10
<100
<0.5
0.33
37
<0.1
401
0.18
<0.5
0.99
GWA-115
Shallow
05/02/2018
1.4
1
1510
0.32
2.8 S3
11.2
1820
<0.2
2.3 S1
4.8 S3
0.19
5.93
<0.5
13.3
0.039 j
2.5
4 j
58.9 j
<0.5
0.39
36.6
0.043 j
360
0.19
<0.5
1.1
GWA-11S
Shallow
08/03/2018
0.89
0.2 j
155
<0.1
1.8
11
2100
<0.2
0.99
3.4
<0.02
5.82
<0.5
14
<0.1
0.54
<10
<100
<0.5
0.19
33.7
0.05 j
363
0.18
<0.5
0.91
GWA-115
Shallow
10/25/2018
0.89
<0.5
272
<0.1
1.8 j
10.7
1750
<0.2
4
3.5
0.33
5.5
<0.5
12.1
0.032 j
0.71
2.9 j
<100
<0.5
0.28
37.6
0.04 j
377
0.17
<0.5
0.86
GWA-12BRU
Deep
01/30/2018
2.1
<0.5
598
<0.1
3.4
4.2
45.7
<0.2
<0.5
5.7
<0.02
<5
<0.5
7.97
<0.1
0.38 51
<10
<100
<0.5
0.98
8.4
<0.1
<50
<0.08
<0.5
2.1
GWA-12BRU
Deep
05/02/2018
2.3
1.7
575
<0.1
2.3 51
4.35
41.8
<0.2
<0.5
4 S3
<0.02
2.82 j
<0.5
8.75
0.037 j
0.064 j,S1
6.3 j
<100
<0.5
0.1
8.1
<0.1
<50
<0.08
0.31 j
2.3
GWA-12BRU
Deep
08/02/2018
2.3
<0.5
373
0.088 j,B
2.5
4.8
42.1
<0.2
0.45 j
6.4
<0.02
2.79 j
<0.5
8.32
0.046 j
0.075 j
6.5 j
53.7 j
<0.5
0.076 j
7.8
<0.1
<50
<0.08
0.54
2.3
GWA-12BRU
Deep
10/23/2018
2.5
0.24 j,S1
361
<0.1
2.6
4.6
39.7
<0.2
0.44 j
6.9
<0.02
2.7 j
<0.5
8.2
0.056 j
0.14 j
8.2 j
<100
<0.5
0.059 j
7.7
0.012 j
<50
<0.08
0.24 j
2.4
GWA-12S
Shallow
01/30/2018
0.13
<0.5
130
<0.1
<0.5
3.35
11.2
<0.2
<0.5
0.58 51
0.18
<5
<0.5
9.16
<0.1
<0.3
<10
<100
<0.5
0.12
15.9
<0.1
<50
<0.08
<0.5
<0.1
GWA-12S
Shallow
05/02/2018
2.2
<0.5
162
0.036 j
3.5 S1
3.4
4.1 j
<0.2
<0.5
6 S3
0.19
<5
<0.5
9.86
0.032 j
<0.3
<10
<100
<0.5
<0.1
15.8
<0.1
<50
<0.08
0.16 j
0.05 j
GWA-125
Shallow
08/02/2018
0.08 j
2.3
206
0.22 B
0.3 j
3.49
4.5 j
<0.2
1.5
1.4
0.23
<5
<0.5
9.67
0.032 j
0.13 j
3.5 j
<100
<0.5
<0.1
16.8
<0.1
<50
<0.08
0.47 j
0.061 j
GWA-12S
Shallow
10/23/2018
0.052 j
0.27 j,S1
<50
<0.1
0.3 j,S1
3.4
<5
<0.2
<0.5
<0.5
0.23
<5
<0.5
9.3
0.037 j
0.072 j
<10
<100
<0.5
<0.1
17.3
<0.1
<50
<0.08
0.094 j
0.047 j
GWA-13BR
Bedrock
02/01/2018
0.4 S1
1.1 S1
5840
<0.1
16.8
7.25
248
<0.2
0.73 51
14.6
0.021
6.39
<0.5
9.07
<0.1
3.6
<10
<100
<0.5
<0.1
57.2
<0.1
86.9
<0.08
4.2
0.18
GWA-13BR
Bedrock
05/04/2018
0.022 j
0.15 j
4680
0.066 j,B
16.6
8.52
211
<0.2
0.14 j
0.46 j,S1
0.015 j
6.85
<0.5
9.58
<0.1
<0.3
<10
<100
<0.5
0.065 j
66.7
0.05 j
73.4
<0.08
0.2 j
<0.1
GWA-13BR
Bedrock
08/06/2018
<0.1
0.14 j
6040
<0.1
18.5
8.96
268
<0.2
0.16 j
<0.5
<0.02
6.88
<0.5
9.87
<0.1
<0.3
<10
<100
<0.5
<0.1
63.2
0.063 j
79.1
<0.08
<0.5
<0.1
GWA-13BR
Bedrock
11/01/2018
0.03 j
0.28 j,B
6010
<0.1
18.8
8.8
262
<0.2
0.13 j
0.58
<0.02
7
<0.5
9.5
<0.1
0.098 j
3.3 j
<100
<0.5
<0.1
74.2
0.058 j
85.9
<0.08
0.25 j,S1
0.016 j
GWA-14BR
Bedrock
01/29/2018
<0.1
<0.5
<50
<0.1
13.7
4.04
98.5
<0.2
1.8
<0.5
<0.02
6.4
<0.5
10.4
<0.1
<0.3
<10
<100
<0.5
0.62
<5
<0.1
<50
<0.08
<0.5
<0.1
Page 20 of 45

TABLE 3-3
2018 COMPREHENSIVE GROUNDWATER QUALITY DATA
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS LLC, MOORESBORO NC
Analytical Parameters
INORGANIC PARAMETERS (DISSOLVED CONCENTRATION WITH FILTER SIZE)
RADIONUCLIDES
OTHER PARAMETERS
Copper
Iron
Lead
Lithium
Manganese
Mercury
Molybdenum
Nickel
Phosphorus
Selenium
Strontium
Thallium
Vanadium
Zinc
Radium-226
Radium-228
Total
Radium
Uranium-238
Total Uranium
Uranium-238
(Dissolved)
Carbonate
Alkalinity
Fluoride
Phosphorus
Reporting Units
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
mg/L
ug/L
ug/L
ug/L
ug/L
ug/L
pCi/L
pCi/L
pCi/L
ug/mL
ug/mL
ug/mL
mg/L
mg/L
mg/L
15A NCAC 02L Standard
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
5^
NE
0.03^
NE
NE
2
NE
Background Threshold Values (Shallow Flow Zone)
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
2.58
NE
0.0005
NE
5
NE
NE
Background Threshold Values (Deep Flow Zone)
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
1.51
NE
0.0005
NE
5
NE
NE
Background Threshold Values (Bedrock Flow Zone)
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
3.1
NE
0.0005
NE
5
NE
NE
Sample ID
Sample Location
Aquifer Name
Sample
Collection Date
Analytical Results
GWA-02S
Shallow
01/30/2018
0.66
<50
<0.1
NA
199
<0.2
<0.5
1.7
<0.05
<0.5
117
0.12
<0.3
<10
0.0815
0.0398
0.1213
<0.0005
<0.0005
NA
<5
<0.1
<0.05
GWA-02S
Shallow
05/03/2018
0.11j
<50
<0.1
NA
191
<0.2
<0.5
1.6
<0.05
<0.5
118
0.12
0.13j
<10
-0.072 U
0.0695 U
0.0695 U
<0.0005
<0.0005
<0.0005
<5
<0.1
<0.05
GWA-02S
Shallow
08/02/2018
0.27 j,S1
<50
<0.1
NA
178
<0.2
<0.5
1.2 SI
<0.05
<0.5
126
0.11
0.22j
<10
0.214 U
0.719 U
0.933 U
<0.0005
<0.0005
<0.0005
<5
<0.1
<0.05
GWA-02S
Shallow
10/30/2018
0.55 S1
<50
<0.1
NA
232
<0.2
<0.5
1.8
0.03 j
<0.5
134
0.12
0.14 j
10 j,S1
0. 177 U
1.15 S1,B
1.33
NA
<0.0005
NA
<5
<0.1
<0.05
GWA-03D
Deep
02/01/2018
NA
115
NA
NA
1400
<0.2
NA
NA
<0.05
NA
190
NA
NA
<10
0.231 S1
0.285
0.516
NA
NA
NA
<5
<0.1
<0.05
GWA-03D
Deep
04/30/2018
IA S1
36.8j
0.086j
NA
1400
<0.2
0.19j
28.3
<0.05
0.23j
216
0.1
0.55 S1
3.2j
0.363
2.27 S1
2.63
<0.0005
<0.0005
0.000042j
<5
<0.1
0.048j
GWA-03D
Deep
08/08/2018
2.7
<50
0.041j
NA
1330
<0.2
1.7
28.6
0.063
0.37j
214
0.097j
0.51
7.2j
0.224 U
0.515 U
0.739 U
<0.0005
<0.0005
<0.0005
<5
<0.1
0.088
GWA-03D
Deep
11/02/2018
5.2
<50
<0.1
NA
1060
<0.2
0.41 j,S1
29.7
0.057
<0.5
245
0.057 j
0.52 S1
7.4 j
0.416 U
0.635
1.05 U
NA
<0.0005
NA
<5
<0.1
0.055
GWA-04D
Deep
01/29/2018
<0.5
16200
<0.1
NA
4340
<0.2
<0.5
38.8
<0.05
<0.5
459
<0.1
<0.3
<10 B
0.445
3.44 B
3.885
0.0007
0.0007
NA
<5
0.12
<0.05
GWA-04D
Deep
05/03/2018
<0.5
14500
0.03j
NA
3840
<0.2
<0.5
35.3
<0.05
0.24j
418
<0.1
0.18j
9.6j
1.17
2.58
3.75
0.00059
0.00059
0.00061
<5
0.12
<0.05
GWA-04D
Deep
07/31/2018
<0.5
14700
<0.1
NA
3900
<0.2
<0.5
34.4
<0.05
0.22j
425
<0.1
<0.3
9.4 j,B
1.65 B
3.14
4.79
0.00065
0.00065
0.00055
<5
0.16
<0.05
GWA-04D
Deep
10/22/2018
0.24 j,S1
13500
<0.1
NA
3860
<0.2
<0.5
37.7
<0.05
<0.5
416
<0.1
<0.3
13.8
1.11
3.19
4.3
NA
0.00066
NA
<5
0.15
<0.05
GWA-04S
Shallow
01/29/2018
1.8
18800
0.52
NA
1980
<0.2
<0.5
19.2
<0.05
3.4
575
1.6
<0.3
27.8
0.228
0.89
1.118
<0.0005
<0.0005
NA
<5
0.21
<0.05
GWA-04S
Shallow
05/03/2018
1.8
16200
0.42
NA
1880
<0.2
<0.5
16.7
<0.05
0.36j
465
1.2
0.18j
24.2
0.536
0.504 U
1.04 U
0.00016j
0.00016j
0.00014j
<5
0.22
<0.05
GWA-04S
Shallow
07/31/2018
1.2 SI
17900
0.44
NA
1950
<0.2
<0.5
19.1
<0.05
0.4j
535
1.9
0.16j
27.6 B
0.152 U
0.462 U
0.614 U
<0.0005
<0.0005
<0.0005
<5
0.24
<0.05
GWA-04S
Shallow
10/22/2018
1.8
16600
0.42 S1
NA
1870
<0.2
<0.5
18.4
<0.05
0.4j
512
1.9
<0.3
30
0.83
-0.449 U
0.83 U
NA
0.000095j
NA
<5
0.23
<0.05
GWA-05BRU
Deep
01/29/2018
<0.5
85
<0.1
NA
216
<0.2
<0.5
<0.5
0.054
<0.5
197
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
0.055
GWA-05BRU
Deep
04/27/2018
0.14 j,S1
54.1
<0.1
NA
199
<0.2
0.12 j
1.2
<0.05
<0.5
184
<0.1
0.42 S1
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
0.052
GWA-05BRU
Deep
07/30/2018
0.24 j,B,SI
40.1 j
<0.1
NA
44.1
<0.2
0.74 SI
1.3
0.026 j
<0.5
189
<0.1
0.37 SI
<10
NA
NA
NA
NA
NA
NA
<5
0.06 j
0.052
GWA-05BRU
Deep
10/26/2018
1
316
<0.1
NA
257
<0.2
0.12j
0.74
0.058
<0.5
177
<0.1
0.31
<10
NA
NA
NA
NA
NA
NA
<5
0.054j
0.052
GWA-05S
Shallow
01/29/2018
0.82
<50
<0.1
NA
373
<0.2
<0.5
9.9
<0.05
3.5
120
0.44
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05 M1
GWA-05S
Shallow
04/27/2018
0.93 SI
<50
<0.1
NA
451
<0.2
<0.5
8.6
<0.05
3.3
97.7
0.41
0.22 j,S1
2.6 j
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-05S
Shallow
07/30/2018
1.3 B,S1
<50
<0.1
NA
512
<0.2
<0.5
9.8
<0.05
3
107
0.4
0.11 j,S1
3.6 j
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-05S
Shallow
10/26/2018
1.8
<50
<0.1
NA
262
<0.2
<0.5
7.2
<0.05
3.7
95.4
0.39
0.16 j
6.6 j
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-10D
Deep
01/30/2018
<0.5
<50
<0.1
NA
160
<0.2
<0.5
3.5
<0.05
<0.5
147
<0.1
0.36
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-10D
Deep
05/02/2018
0.38j
<50
<0.1
NA
155
<0.2
0. 17j
3.6
<0.05
0.27j
129
<0.1
0.41 B
3j
NA
NA
NA
NA
NA
NA
<5
<0.1
0.057 SI
GWA-10D
Deep
08/06/2018
1
<50
<0.1
NA
163
<0.2
0.16j
3.9
0.037j
0.15j
125
<0.1
0.46
5.3j
NA
NA
NA
NA
NA
NA
<5
<0.1
0.036j
GWA-SOD
Deep
10/24/2018
0.37 j,S1
<50
<0.1
NA
161
<0.2
<0.5
3.9
0.039 j
<0.5
124
<0.1
0.24 j
4.3 j,SI
NA
NA
NA
NA
NA
NA
<5
<0.1
0.038 j
GWA-10S
Shallow
01/30/2018
<0.5
<50
<0.1
NA
1390
<0.2
<0.5
12.1
<0.05
0.55
222
0.2
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-SOS
Shallow
05/02/2018
0.25j
<50
0.028j
NA
1120
<0.2
0.18j
11.7
<0.05
0.51
210
0.22
0.13 j,B
5.2j
NA
NA
NA
NA
NA
NA
<5
0.087j
<0.05
GWA-10S
Shallow
08/06/2018
0.51
<50
<0.1
NA
935
<0.2
0.15 j
9.8
<0.05
1.3
181
0.2
0.069 j
10.7
NA
NA
NA
NA
NA
NA
<5
0.11
<0.05
GWA-10S
Shallow
10/24/2018
0.81 SI
<50
<0.1
NA
764
<0.2
0.13 j
9
<0.05
0.53
186
0.19
<0.3
7.8 j,S1
NA
NA
NA
NA
NA
NA
<5
0.082 j
<0.05
GWA-11BRU
Deep
01/30/2018
0.51
415
<0.1
NA
903
<0.2
<0.5
4.3
<0.05
<0.5
282
<0.1
<0.3
<10
0.843
2.66
3.503
<0.0005
<0.0005
NA
<5
<0.1
<0.05
GWA-11BRU
Deep
05/02/2018
0.41 j
393
<0.1
NA
716
<0.2
0.15 j
2.8
<0.05
<0.5
289
<0.1
0.19 j,B
<10
0.94
1.85
2.79
0.00023 j
0.00023 j
0.00034 j
<5
<0.1
<0.05
GWA-11BRU
Deep
08/03/2018
0.33 j
308
<0.1
NA
618
<0.2
0.11 j
1.5
<0.05
<0.5
273
<0.1
<0.3
5.5 j
0.343 U
1.59
1.93
0.00024 j
0.00024 j
0.00029 j
<5
<0.1
<0.05
GWA-11BRU
Deep
10/25/2018
0.11 j,S1
550
<0.1
NA
1010
<0.2
0.16 j
2.5
<0.05
<0.5
269
<0.1
<0.3
2.6 j
0.587 U
2.22
2.81
NA
0.00031 j
NA
<5
<0.1
<0.05
GWA-11S
Shallow
01/30/2018
0.65
<50
<0.1
NA
2070
<0.2
1.1
4
0.072
<0.5
486
<0.1
0.36
<10
0.0642
0.0223
0.0865
<0.0005
<0.0005
NA
<5
<0.1 MI
0.075
GWA-11S
Shallow
05/02/2018
0.63
52.3 B
0.031j
NA
1890
<0.2
2.1
4
0.056
<0.5
546
0.033j
0.46 B
<10
0.61 U
0.16 U
0.77 U
0.000076j
0.000076j
<0.0005
<5
0.11
0.074 S1
GWA-11S
Shallow
08/03/2018
0.19j
<50
<0.1
NA
1820
<0.2
0.96
3.5
0.065
<0.5
457
<0.1
0.42 B
<10
0.351 U
0.0475 U
0.399 U
<0.0005
<0.0005
<0.0005
<5
0.12
0.073
GWA-11S
Shallow
10/25/2018
0.38 j,S1
<50
<0.1
NA
1640
<0.2
3.1
3.2
0.066
<0.5
588
0.028 j
0.48
2.6 j
0. 132 U
0.441 U
0.573 U
NA
<0.0005
NA
<5
0.15 M1
0.09
GWA-12BRU
Deep
01/30/2018
<0.5
468
<0.1
NA
44.2
<0.2
<0.5
5.6
<0.05
<0.5
44.7
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1 MI
<0.05
GWA-12BRU
Deep
05/02/2018
<0.5
462
<0.1
NA
37.1
<0.2
<0.5
6.9
<0.05
<0.5
43.4
0.037 j
0.17 j,B
5.3 j,B
NA
NA
NA
NA
NA
NA
<5
0.1
0.026 j,S1
GWA-12BRU
Deep
08/02/2018
0.25 j,S1
330
0.11 SI
NA
38.3
<0.2
0.33j
6.4
<0.05
<0.5
50
0.041j
<0.3
7j
NA
NA
NA
NA
NA
NA
<5
0.12
<0.05
GWA-12BRU
Deep
10/23/2018
0.18 j,S1
329
<0.1
NA
37.4
<0.2
0.16 j
7
<0.05
<0.5
46.5
0.054 j
<0.3
6.5 j
NA
NA
NA
NA
NA
NA
<5
0.1
0.0423
GWA-12S
Shallow
01/30/2018
<0.5
<50
<0.1
NA
8.7
<0.2
<0.5
<0.5
<0.05
<0.5
16.2
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-12S
Shallow
05/02/2018
0.48 j
<50
<0.1
NA
<5
<0.2
<0.5
0.47 j
<0.05
<0.5
16.4
0.029 j
0.13 j,B
<10
NA
NA
NA
NA
NA
NA
<5
<0.1 M1
<0.05
GWA-12S
Shallow
08/02/2018
2.8 SI
<50
0.061 j,S1
NA
<5
<0.2
0.53
1.6 S1
<0.05
<0.5
18.4
<0.1
<0.3
4 j
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-12S
Shallow
10/23/2018
0.8 S1
<50
<0.1
NA
<5
<0.2
<0.5
<0.5
<0.05
<0.5
17.1
0.034 j
<0.3
2.7 j
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-13BR
Bedrock
02/01/2018
<0.5 B
5090
<0.1
NA
213
<0.2
<0.5
4.4
<0.05
<0.5
128
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-13BR
Bedrock
05/04/2018
<0.5
5100
<0.1
NA
228
<0.2
0.12 j
<0.5
<0.05
<0.5
150
<0.1
<0.3
3.4 j
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-13BR
Bedrock
08/06/2018
0. 16j
5110
0.082j
NA
228
<0.2
0. 12j
0.47j
<0.05
<0.5
142
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-13BR
Bedrock
11/01/2018
0.19 j,S1
5930
<0.1
NA
261
<0.2
0.12 j
<0.5
<0.05
<0.5
162
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-14BR
Bedrock
01/29/2018
<0.5
<50
<0.1
NA
91.6
<0.2
1.9
<0.5
<0.05
<0.5
110
<0.1
0.42 S1
<10
NA
NA
NA
NA
NA
NA
<5
0.13
<0.05
Page 21 of 45

TABLE 3-3
2018 COMPREHENSIVE GROUNDWATER QUALITY DATA
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS LLC, MOORESBORO NC
Analytical Parameters
FIELD PARAMETERS
WATER QUALITY PARAMETERS
SELECTED 40CFR257 APPENDIX III CONSTITUENTS plus Sr
INORGANIC PARAMETERS (TOTAL CONCENTRATION)
pH
Water
Level
Temp
Spec
Cond
DO
ORP
Eh
Turbidity
Alkalinity
Bi-
carbonate
Alkalinity
Sulfide
Total
Organic
Carbon
Total
Suspended
Solids
Boron
Calcium
Chloride
Strontium
Sulfate
Total
Dissolved
Solids
Aluminum
Antimony
Arsenic
Barium
Beryllium
Cadmium
Chromium
(VI)
Chromium
Reporting Units
S.U.
ft
Deg C
umhos/cm
mg/L
mV
mV
NTUs
mg/L
mg/L
mg/L
mg/L
mg/L
ug/L
mg/L
mg/L
ug/L
mg/L
mg/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
15A NCAC 02L Standard
6.5-8.5
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
700
NE
250
NE
250
Soo
NE
1*
10
700
4*
2
10
10
Background Threshold Values (Shallow Flow Zone)
4.4-6.1
NE
NE
NE
NE
NE
NE
NE
13.67
14.42
0.1
1
NE
50
3.221
7.7
36.71
1.169
75.47
253
1
0.5
73.03
0.188
1
0.452
3.968
Background Threshold Values (Deep Flow Zone)
4.8-6.1
NE
NE
NE
NE
NE
NE
NE
19.74
18.13
0.1
1
NE
50
11
5.1
56.14
10
70.98
290
1
0.763
23
0.2
1
0.16
1.791
Background Threshold Values (Bedrock Flow Zone)
5.4-7.4
NE
NE
NE
NE
I NE
I NE
NE
S3
68.82
0.1
1
NE
50
16
8.656
107.1.
15.1
1.20
208.2
1
1
1 19.33
1 1
1
0.12
3.567
Sample ID
Sample Location
Aquifer Name
Sample
Collection Date
Analytical Results
GWA-14BR
Bedrock
05/04/2018
8.4
35.11
22
282
1.00
15
220
8.6
81.8
81.8
<0.1
<1
<2.5
<50
34.4
3.1
108
50.4
180
232
0.56
1.5
8.3
<0.1
<0.08
0.94 SI
4
GWA-14BR
Bedrock
08/02/2018
8.6
35.46
22
349
0.10
67
272
9.1
75.9
75.9
<0.1
0.75 j
6.5
<50
34.7
10
151
88.8
221
406 S1
1.3
1.6
12.5
<0.1
<0.08
0.29
0.46 j
GWA-14BR
Bedrock
10/23/2018
8.5
35.63
18
293
0.30
-71
135
9.0
75
75
<0.1
0.72 j
5.2
<50
28.4
5.9
113
54.8
187
128
1.6
1.4
6.4
<0.1
<0.08
0.1
0.45 j,B,SI
GWA-14D
Deep
01/29/2018
6.0
39.38
15
674
2.30
132
337
3.1
105
105
<0.1
<1
<2.5
109
84.2
12.4
256
216
456
<100
<0.5
0.16 SI
50.2
<0.1
<0.08
1.9
2.5 SI
GWA-14D
Deep
05/03/2018
5.9
35.12
20
650
2.70
61
266
2.7
104
104
<0.1
0.99 j,M1,Rl
<5
128
83.3
14.9
240
212
448
99.8j
<0.5
0.16
50.4
0.042j
0.039j
0.73
1.3 Sl
GWA-14D
Deep
08/02/2018
6.0
35.36
26
558
2.60
120
325
8.6
100
100
<0.1
<1
5
83.4
68.1
7.8
230
172
398
179 S1
<0.5
0.085j
47.1
<0.1
0.055j
1
0.97
GWA-14D
Deep
10/23/2018
5.9
36.66
16
578
2.00
88
293
1.9
99.5
99.5
<0.1
0.63 j
<2.5
88.7
70.2
8.2
218
182
412
<100
<0.5
0.1
49.3
0.042 j
0.1
0.62
0.86 B,SI
GWA-20BR
Bedrock
01/30/2018
10.4
7.64
16
382
0.10
-102
103
0.5
62.5
43.8
<0.1
<1
<2.5
228
44.5
37.7
794
66.6
254
<100
<0.5
0.97
97.5
<0.1
<0.08
0.074 SI
<0.5
GWA-20BR
Bedrock
04/30/2018
10.9
7.22
16
480
0.40
-135
70
1.0
34.5
<5
<0.1
1.4
5.2
151
45.9
39.8
739
67.9
206
109
0.17 j
1.2
47.9
<0.1
<0.08
<0.025
0.24 j,Sl
GWA-20BR
Bedrock
07/30/2018
9.1
8.01
25
414
0.40
-194
11
1.9
63.4
63.4
<0.1
<1
5.5
299
51.5
46
748
79
300
<100
0.081j
0.79 S1
127
<0.1
<0.08
0.034 S1
0.26j
GWA-20BR
Bedrock
10/24/2018
7.2
8.07
19
423
0.20
-189
16
0.6
51
51
<0.1
0.51j
8.6
320
42.9
43.9
502
72.5 MI
282
<100
0.34j
0.64
118
<0.1
<0.08
<0.025
0.35j
GWA-20D
Deep
01/30/2018
5.7
12.57
16
528
0.20
25
230
6.5
17.8
17.8
<0.1
<1
<2.5
BOB
54.4
55.8
448
151
320
<100
<0.5
0.39 S1
83.8
<0.1
<0.08
0.061 S1
<0.5
GWA-20D
Deep
04/30/2018
5.8
12.00
22
543
5.30
-96
109
1.0
16.4
16.4
<0.1
<1
<2.6
814
63.3
56.7
472
165
362
<100
<0.5
0.15 SS
82.3
<0.1
0.049 j
<0.025
0.17 j,Sl
GWA-20D
Deep
07/30/2018
5.7
12.61
21
575
0.20
47
252
9.3
<5
<5
<0.1
<1
<2.5
845
64.3
57.4
511
173
382
<100
<0.5
0.43 S1
86.6
<0.1
0.049j
<0.025
0.57
GWA-20D
Deep
10/24/2018
5.5
1258.00
20
587
0.20
51
256
8.2
17
17
<0.1
<1
2.9
911
70.6 M1
55
555
180
382
<100
<0.5
0.14
92.5
0.016j
0.12
<0.025
0.27j
GWA-20S
Shallow
01/30/2018
6.3
8.58
14
558
0.70
148
353
7.0
119
119
<0.1
<1
3.4 S1
223
66.7
47.9
112
90.1
307
238
<0.5
0.28 SI
17.4
<0.1
<0.08
0.17 SI
<0.5
GWA-20S
Shallow
04/30/2018
6.5
8.14
21
554
0.20
7
212
9.8
121
121
<0.1
0.66j
13.1
281
74.5
49.3
144
91.7
332
420
<0.5
0.14 S1
10.8
<0.1
<0.08
<0.025
0.3 j,Sl
GWA-20S
Shallow
07/30/2018
6.2
8.49
20
543
0.30
10
215
9.7
111
111
<0.1
0.59j
5.6
256
64.3
49.7
134
99.1
338
95.4 j,SI
<0.5
0.57 SI
21.5
<0.1
<0.08
0.22 S1
0.5j
GWA-20S
Shallow
10/24/2018
6.2
8.50
21
554
0.20
-7
198
3.8
118
118
<0.1
0.68j
8.9
271
71.5
47.3
126
86.5
337
88.2j
<0.5
0.23
17.7
0.014j
<0.08
<0.025
0.2j
GWA-21BR
Bedrock
01/26/2018
7.4
2.82
14
432
0.30
-42
163
4.1
208
208
<0.1
1.1
6.7
120
65.5
14.5
282
<1
59
<100
<0.5
<0.1
7.7
<0.1
<0.08
<0.025
<0.5
GWA-21BR
Bedrock
04/26/2018
7.1
0.50
19
431
0.20
-53
152
1.7
108
108
<0.1
1.4
6.8
108
69.1
14.3
272
<1
288
<100
<0.5
0.055 j,SI
6.3
<0.1
<0.08
<0.025
0.36 j,Sl
GWA-21BR
Bedrock
07/30/2018
7.1
2.01
25
443
0.50
-146
59
1.0
207
207
<0.1
1.1
7.3
110
66.9
15.4
255
<1
274
<100
<0.5
0.052 j,SI
6.3
<0.1
<0.08
<0.025
0.18j
GWA-21BR
Bedrock
10/24/2018
7.3
1.64
17
427
0.30
-117
88
0.0
207
207
<0.1
1.3
7.4
114
69.9
15.5
269
<1
276
<100
<0.5
0.06j
6.7
<0.1
<0.08
<0.025
0.35j
GWA-21BRU
Deep
01/26/2018
6.7
13.41
14
296
9.30
58
263
3.0
37.9
37.9
<0.1
<1
<2.5
148
29.6
24.4
154
54.5
170
<100
<0.5
<0.1
26.2
<0.1
<0.08
<0.025
<0.5
GWA-21BRU
Deep
04/26/2018
6.0
9.24
22
258
5.40
77
282
0.3
24.1
24.1
<0.1
<1
<2.5
141
26
21.4
136
58.8
171
<100
<0.5
0.066 j,SI
14.9
<0.1
<0.08
<0.025
0.18 j,SI
GWA-21BRU
Deep
07/30/2018
6.1
13.67
31
286
0.40
109
314
0.8
30.7
30.7
<0.1
<1
<2.5
151
28.8
19.5
141
77.2
180
<100
<0.5
0.063 j,SI
24.2
<0.1
<0.08
<0.025
<0.5
GWA-21BRU
Deep
10/24/2018
6.2
13.28
13
269
0.70
89
294
0.0
28.8
28.8
<0.1
0.72j
<2.5
174
28.2
21.7
141
68.3
168
<100
0. 14j
0.088j
24.6
<0.1
<0.08
<0.025
0.14j
GWA-21S
Shallow
01/26/2018
8.6
12.3 Top of Pump
13
379
7.50
67
272
3.1
35
35
<0.1
<1
<2.5
262
44.1
31.2
172
75.6
227 D6
234
<0.5
3.6
9
<0.1
<0.08
3.2
3.5 S1
GWA-21S
Shallow
04/26/2018
10.9
4.96
21
457
5.90
152
357
0.4
77.4
1.4 j
<0.1
1.2
<2.5
196
55.3
11.2
170
91.7
254
1720
0.95
33
16.7
<0.1
<0.08
4.6
4
GWA-21S
Shallow
07/30/2018
7.1
Top of Pump
26
447
1.40
-33
172
0.3
127
127
<0.1
0.97j
<2.5
148
71 M1,R1
13.3
269
98.8
312
<100
0.34j
11.9
39.1
<0.1
<0.08
0.091 Sl
0.38j
GWA-21S
Shallow
10/24/2018
6.4
Below Pump
15
405
2.00
93
298
0.0
76.8
76.8
<0.1
1
<2.5
141
52.6
19.4
179
95.8
272
<100
0.27 j
3
39.1
<0.1
<0.08
0.12
0.6
GWA-22BRU
Deep
01/31/2018
8.5
11.23
14
224
1.00
30
235
2.5
79.6
79.6
<0.1
<1
<2.5
<50
27.2
15.6
128
3
129
<100
<0.5
0.42
12.9
<0.1
<0.08
<0.025
<0.5
GWA-22BRU
Deep
05/03/2018
8.4
11.12
19
245
3.70
-72
133
2.5
94.4
94.4
<0.1
<1
<2.5
<50
28.9
17
140
4.9
146
<100
<0.5
0.4
14
<0.1
<0.08
0.12
0.25 j,Sl
GWA-22BRU
Deep
08/06/2018
8.3
11.17
19
246
2.50
-15
190
1.0
89.2
89.2
<0.1
<1
<2.5
28.7 j
26.6
17.4
138
6
154
<100
<0.5
0.4
14.2
<0.1
<0.08
0.16
1.7
GWA-22BRU
Deep
11/01/2018
6.9
11.64
17
215
0.90
48
253
3.3
79.8
79.8
<0.1
<1
<2.5
<50
28.2
19.1
114
2.8
129
<100
<0.5
0.18
12.4
<0.1
<0.08
<0.025
0.92 B,BC,SI
GWA-22S
Shallow
01/31/2018
5.7
8.36
11
193
1.10
137
342
9.8
7.8
7.8
<0.1
<1
<2.5
265
12.3
47.3
76.5
1.4
123
149
<0.5
<0.1
64.9
0.3
<0.08
0.045 Sl
12.3
GWA-22S
Shallow
05/03/2018
5.6
7.70
15
131
3.00
116
321
7.7
4.8 j
4.8 j
<0.1
<1
4.2
253
8.17
33
56.2
3.5
94
336
<0.5
0.17
50.6
0.27
0.056 j
<0.025
0.39 j,SI
GWA-22S
Shallow
08/06/2018
5.5
8.55
20
185
0.90
36
241
8.7
5.5
5.5
<0.1
<1
<2.5
376
10.4
49.7
71.7
1.5
104
254
<0.5
0.17
70.8
0.45
0.05 j
0.046
16.2
GWA-22S
Shallow
11/01/2018
5.0
8.21
18
191
0.90
168
373
6.8
5.5
5.5
<0.1
0.53 j
<2.5
419
10.9
51.1
78.2
1.9
134
279
<0.5
0.2
73.4
0.51
<0.08
<0.025
0.34 j,B,BC,SI
GWA-23D
Deep
01/31/2018
5.2
26.09
12
43
6.00
271
476
3.5
<5
<5
<0.1
<1
<2.5
<50
1.12
5.1
16.7
<1
1020
<100
<0.5
<0.1
21.4
<0.1
<0.08
0.033 SI
<0.5
GWA-23D
Deep
05/01/2018
4.9
26.05
25
40
6.10
200
405
0.7
2.6 j
2.6 j
<0.1
<1
<5
<50
1.2
4.6
15.6
0.58 j
30
<100
<0.5
<0.1
19
0.082 j
<0.08
0.53 Sl
1.8
GWA-23D
Deep
08/06/2018
5.1
26.08
33
43
3.60
99
304
2.1
2.3 j
2.3 j
<0.1
<1
<2.6
<50
1.32
5.3
16.7
0.51 j
38
<100
<0.5
<0.1
20.8
0.12
<0.08
0.044
0.17 j
GWA-23D
Deep
10/25/2018
5.4
26.44
12
43
5.40
140
345
0.6
2 j
2 j
<0.1
<1
<5
<50
1.2
5.3
15.1
<1
<25
<100
<0.5
0.063 j
20.6
0.085 j
<0.08
0.048
0.14 j,SI
GWA-24BR
Bedrock
01/31/2018
5.8
25.81
14
57
2.80
22
227
1.4
13.9
13.9
<0.1
<1
<2.5
<50
3.47
1.1
26
6.6
58 D6
<100
<0.5
<0.1
8.7
<0.1
<0.08
<0.025
<0.5
GWA-24BR
Bedrock
05/03/2018
5.9
18.52
18
56
2.33
172
377
1.3
14.3
14.3
<0.1
<1
<2.5
<50
3.47
1.2
29.1
7.4
42
<100
<0.5
<0.1
8.5
<0.1
<0.08
<0.025
<0.5
GWA-24BR
Bedrock
08/06/2018
6.1
20.68
20
56
2.10
160
365
0.0
14.1
14.1
<0.1 Ml
<1
<2.5
<50
3.62
1.3
30.6
7.4
58
<100
<0.5
<0.1
9.4
<0.1
<0.08
0.051 M1,R3
0.2 j
GWA-24BR
Bedrock
10/30/2018
6.0
20.62
10
66
6.70
116
321
1.1
15.2
15.2
<0.1
<1
<2.5
<50
3.7
1.2
31.7
7
57
<100
<0.5
<0.1
9.6
<0.1
<0.08
0.063 S1
0.16 j
GWA-24D
Deep
01/31/2018
5.4
22.48
14
44
5.10
25
230
0.2
7.6
7.6
<0.1
<1
<2.5
<50
2.09
2.4
20.3
2.6
29
<100
<0.5
<0.1
9.2
<0.1
<0.08
<0.025
<0.5
GWA-24D
Deep
05/03/2018
5.6
18.05
16
44
5.41
167
372
0.3
7.4
7.4
<0.1
<1
<2.5
<50
2.24
2.5
23.7
3.6
31
<100
<0.5
<0.1
9.1
0.04 j
<0.08
<0.025
0.13 j,Sl
GWA-24D
Deep
08/06/2018
5.7
20.15
23
46
3.50
199
404
0.3
6.9
6.9
<0.1
<1
<2.5
32.4 j
2.54
2.8
26.2
3.7
44
138
<0.5
<0.1
10.4
0.043 j
<0.08
0.033
<0.5
GWA-24D
Deep
10/30/2018
5.6
19.78
15
46
4.90
-14
191
2.6
7.3
7.3
<0.1
<1
<2.5
<50
2.2
2.6
24.5
3.1
47
<100
<0.5
<0.1
10.6
0.033 j
<0.08
0.051 Sl
0.11 j
GWA-24S
Shallow
01/31/2018
5.3
21.24 Top of Pump
14
42
4.40
278
483
4.8
<5
<5
<0.1
<1
14.5
<50
1.02
3
16.1
3.1
33
3660
<0.5
0.13
31.9
0.1
<0.08
0.036 Sl
1.2 Sl
GWA-24S
Shallow
05/03/2018
5.0
21.12___i
21
28
5.50
270
475
0.5
<5
<5
<0.1
<1
<2.5
<50
0.154
5.1
<5
0.6 j
<25
99.6 j
<0.5
0.081 j
9.8
0.1
<0.08
1.2
2
Page 22 of 45

TABLE 3-3
2018 COMPREHENSIVE GROUNDWATER QUALITY DATA
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS LLC, MOORESBORO NC
Analytical Parameters
INORGANIC PARAMETERS (TOTAL CONCENTRATION)
INORGANIC PARAMETERS (DISSOLVED CONCENTRATION WITH FILTER SIZE)
Cobalt
Copper
Iron
Lead
Lithium
Magnesium
Manganese
Mercury
Molybdenum
Nickel
Nitrate
+ Nitrite
Potassium
Selenium
Sodium
Thallium
Vanadium
Zinc
Aluminum
Antimony
Arsenic
Barium
Beryllium
Boron
Cadmium
Chromium
Cobalt
Reporting Units
ug/L
ug/L
ug/L
ug/L
ug/L
mg/L
ug/L
ug/L
ug/L
ug/L
mg-N/L
mg/L
ug/L
mg/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
15A NCAC 02L Standard
1*
1000
300
15
NE
NE
50
1
NE
100
NE
NE
20
NE
0.2*
0.3*
1000
NE
NE
NE
NE
NE
NE
NE
NE
NE
Background Threshold Values (Shallow Flow Zone)
10.65
6.569
765.3
1
NE
2.479
168.8
0.2
1
6.256
8.837
5
1
6.139
0.117
1.059
15
NE
NE
NE
NE
NE
NE
NE
NE
NE
Background Threshold Values (Deep Flow Zone)
9.041
9.453
559.7
1
NE
1.6
78.31
0.2
1
12.56
2.8
5
1
4.41
0.063
1.095
15.03
NE
NE
NE
NE
NE
NE
NE
NE
NE
Background Threshold Values (Bedrock Flow Zone)
1.497
5
6220
1
NE
2.328
89.4
0.2
1.716
5
0.92
5
1
1 7.42
0.1
0.37
10
NE
NE
NE
NE
NE
NE
NE
NE
NE
Sample ID
Sample Location
Aquifer Name
Sample
Collection Date
Analytical Results
GWA-14BR
Bedrock
05/04/2018
0.24
1.5
239
0.083 j,B
12.9
3.88
35.2
<0.2
6.3
2.6
0.61
9.12
0.19 j
10.5
<0.1
2.1
8.1 j,B
<100
0.46 j
1.3
7.8
<0.1
<50
<0.08
2.1
0.16
GWA-14BR
Bedrock
08/02/2018
0.14
1.5
462
0.15 B
22.6
3.93
31.9
<0.2
30.5
0.82
0.77
18.9
0.24 j
18.6
<0.1
1.5
12.8
<100
1
1.5
9.1
<0.1
<50
<0.08
0.34 j
0.067 j
GWA-14BR
Bedrock
10/23/2018
0.14
0.88 S1
157
0.12
22.4
3.5
44.3
<0.2
11.4
0.6
0.47
12.9
<0.5
14.2
<0.1
1.8
15.2
<100
1.3
1.2
5.3
<0.1
<50
<0.08
0.099 j
0.055 j
GWA-14D
Deep
01/29/2018
0.47
3A S1
76.6
<0.1 B
1.2
30.1
11.1
<0.2
1
5.3
2.5
6.55
1.3
6.38
<0.1
0.55
<10
<100
<0.5
0.17
48
<0.1
92.7
<0.08
1.8
0.4
GWA-14D
Deep
05/03/2018
0.31
0.58 S1
96 S1
0.066 j
0.7
27.1
5.1
<0.2
0.68
3
3.1
6.36
1.5
6.47
0.095 j
0.6
<10
<100
<0.5
0.13
44.1
<0.1
110
0.051 j
0.9 S1
0.25
GWA-14D
Deep
08/02/2018
0.17
6
120
0.078 j,B
0.43 j
23.9
7.5
<0.2
3.7
1.4
3
5.21
0.95
5.91
0.063 j
0.6
12.1
<100
<0.5
0.087 j
43.3
<0.1
74.9
0.047 j
0.86
0.14
GWA-14D
Deep
1O/23/2018
0.11
0.83 SI
<50
<0.1
0.64 j,S1
23.5
<5
<0.2
0.48 j
1.7
3
5.3
1.2
5.8
0.077 j
0.49
5.6 j
<100
<0.5
0.093 j
49.1
0.04 j
83
0.056 j
0.71
0.078 j
GWA-20BR
Bedrock
01/30/2018
<0.1
<0.5
1320
<0.1
41.2
3.9
180
<0.2
2.1
<0.5
0.024
9.11
<0.5
19
<0.1
<0.3
<10
<100
<0.5
0.64
100
<0.1
239
<0.08
<0.5
<0.1
GWA-20BR
Bedrock
04/30/2018
0.021 j
0.17 j,S1
87.2
<0.1
36.7
0.514
11.4
<0.2
5.6
0.39 j
0.2
12.9
<0.5
27
<0.1
0.63
<10
61.6 j
<0.5
0.97
78.4
<0.1
223
<0.08
0.26 j,S1
<0.1
GWA-20BR
Bedrock
07/30/2018
0.068 j
0.24 j,S1
1680 RO
<0.1
33.2
5.5
187 Si
<0.2
2.7 S1
0.54
0.024
8.21
<0.5
19
<0.1
0.17 j,S1
<10
<100
<0.5
0.54 S1
124
<0.1
301
<0.08
<0.5
0.14
GWA-20BR
Bedrock
10/24/2018
0.22
0.15 j,S1
9320
<0.1
21.7
8.4
467
<0.2
1.8
0.99
0.016 j,S1
6.8
<0.5
17.7
<0.1
0.11 j,BC
<10
<100
0.15 j
0.54
6.6
0.017 j
103
<0.08
<0.5
0.24
GWA-20D
Deep
O1/30/2018
90
<0.5
1980
<0.1
1.2
10.7
5660
<0.2
<0.5
6.1
<0.02
<5
<0.5
14.6
0.66
<0.3
<10
<100
<0.5
0.16
76.5
<0.1
781
<0.08
<0.5
104
GWA-20D
Deep
04/30/2018
97.8
0.13 j,S1
794
<0.1
1.5
11.8
5520
<0.2
<0.5
6.3
<0.02
4.22 j
<0.5
15.6
0.64
0.11 j,S1
7.3 j,S1
<100
<0.5
0.16
79.8
<0.1
784
0.038 j
<0.5
96.2
GWA-20D
Deep
07/30/2018
87.2
0.22 j,S1
2990 P8,110
0.27
2
11.7
5470
<0.2
<0.5
6.9
<0.02
4.36 j
0.36 j
14.2
0.62
<0.3
6.5 j
<100
<0.5
0.14 S1
86.6
<0.1
876
0.032 j
0.26 j,S1
78.9
GWA-20D
Deep
10/24/2018
95.7
<0.5
1610
0.13
1.8 j
12.6
6000 M1
<0.2
<0.5
6.6
0.012 j,S1
4.5 j
<0.5
15.1
0.7
<0.3
9.2 j
<100
<0.5
0.12
82.3
<0.1
832
0.099
0.22 j,S1
92.4
GWA-20S
Shallow
01/30/2018
9.8
<0.5
908
0.3
<0.5
13.5
1270
<0.2
<0.5
2.2 S1
0.094
<5
<0.5
11
<0.1
<0.3
<10
<100
<0.5
0.29
15.8
<0.1
221
<0.08
<0.5
10.3
GWA-20S
Shallow
04/30/2018
6
6.4
1900
0.88
0.52
13.9
5750
<0.2
<0.5
3
0.013 j
<5
<0.5
12.1
0.044 j
0.24 j,S1
4.8 j,S1
54.4 j
<0.5
0.098 j
12.4
<0.1
247
<0.08
0.16 j,S1
11.8
GWA-20S
Shallow
07/30/2018
28.6
0.25 j,S1
2580 P8,R0
0.92
0.42 j
12.5
8210
<0.2
0.17 j,S1
3.5
0.021
2.54 j
0.44 j
10.4
0.089 j
<0.3
5.2 j
<100
<0.5
0.12 S1
23.2
<0.1
267
<0.08
0.22 j,S1
31.2
GWA-20S
Shallow
10/24/2018
12.9
0.11 j,S1
2210
1.1
0.31 j,S1
13.7
5590
<0.2
0.14 j
2.7
0.069 SI
<5
<0.5
11.3
0.095 j
<0.3
6.2 j
<100
<0.5
0.06 j
16.8
0.013 j
245
<0.08
0.11 j,S1
12
GWA-21BR
Bedrock
O1/26/2018
0.77
<0.5
3610
<0.1
7.4
5.95
395
<0.2
<0.5
1.1 Sl
<0.02
<5
<0.5
9.08
<0.1
<0.3
<10
<100
<0.5
<0.1
6.4
<0.1
107
<0.08
<0.5
0.66
GWA-21BR
Bedrock
04/26/2018
0.36
<0.5
3300
<0.1
7
6.16
383
<0.2
<0.5
0.6
<0.02
3.1 j
<0.5
9.82
<0.1
0.14 j,S1
<10
<100
<0.5
0.081 j,S1
6.3
<0.1
102
<0.08
<0.5
0.36
GWA-21BR
Bedrock
07/30/2018
0.36
0.16 j,S1
3250 P8,R0
<0.1
7
6
370
<0.2
<0.5
0.46 j
0.016 j
3.05 j
<0.5
9.24
<0.1
<0.3
<10
<100
<0.5
<0.1
6.8
<0.1
110
<0.08
<0.5
0.36
GWA-21BR
Bedrock
10/24/2018
0.4
0.51 SI
3390
<0.1
6.8
6.3
388
<0.2
<0.5
0.56
<0.02
3.1 j
<0.5
9.9
<0.1
0.085 j,BC
<10
<100
<0.5
<0.1
103
<0.1
279
<0.08
0.11 j,51
0.29
GWA-21BRU
Deep
01/26/2018
1.1
<0.5
63
<0.1
0.91
7.63
127
<0.2
1.3
2.3 S1
<0.02
<5
<0.5
7.38
0.16
<0.3
<10
<100
<0.5
<0.1
22.8
<0.1
127
<0.08
<0.5
1.1
GWA-21BRU
Deep
04/26/2018
1.8
0.98 SI
80.8
0.053 j
0.6
6.67
75
<0.2
0.56
2.2
0.18
3.05 j
0.35 j
7.01
0.12
0.1 j,S1
<10
<100
<0.5
0.055 j,S1
13.8
<0.1
133
<0.08
1.7
1.4
GWA-21BRU
Deep
07/30/2018
0.97
0.61 S3
2690 P8,RO
<0.1
0.7
6.71
97.951
<0.2
1.1 S3
1.8
0.023
4.71 j
0.19 j
7.49
0.15
<0.3
<10
<100
0.077 j
<0.1
25.9
<0.1
152
<0.08
<0.5
1
GWA-21BRU
Deep
10/24/2018
1.1
0.48 j,S1
118
<0.1
0.75 j,S1
6.5
98.8
<0.2
1.1
1.7
0.017 j,S1
4.9 j
<0.5
8.5
0.19
0.14 j,BC
<10
<100
<0.5
0.064 j
23.6
<0.1
153
<0.08
<0.5
1.1
GWA-21S
Shallow
O1/26/2018
0.32
0.8 S1
<50
<0.1
<0.5
1.56
13.4
<0.2
36.6
0.8 Sl
1.1
16.9
2.4
8.26
0.16
4.8
<10
<100
<0.5
3.5
10.4
<0.1
208
<0.08
1.7
0.92
GWA-21S
Shallow
04/26/2018
0.24
2.4 S1
<50
<0.1
6.9
0.266
<5
<0.2
21.4
0.74
1.1
19.5
3
6.36
0.18
58.7
<10
1570
1
35.3
15.4
<0.1
179
<0.08
4.4
0.29
GWA-21S
Shallow
07/30/2018
0.68
0.52 S1
92.3 R0,M1,R1
<0.1
5.5
6.01
42.5 51
<0.2
5.1 S1
0.65
0.21
15.6
2.2
7.67
0.51
4.5
<10
<100
0.34 j
12.9
37.8
<0.1
148
<0.08
0.45 j,S1
0.25
GWA-21S
Shallow
10/24/2018
1.4
0.43 j,S1
94.4
<0.1
2.7
5.1
128
<0.2
3.2
2.3
0.34
19.1
0.7
9.9
0.4
1.5 BC
2.6 j
<100
0.21 j
5.6
42.3
<0.1
134
<0.08
0.18 j,S1
0.36
GWA-22BRU
Deep
O1/31/2018
<0.1
<0.5
82.3
<0.1
8.4
1.41
8.4
<0.2
0.63
<0.5
<0.02
12
<0.5
6.15
<0.1
0.97
<10
<100
<0.5
0.37
10.8
<0.1
<50
<0.08
<0.5
<0.1
GWA-22BRU
Deep
05/03/2018
0.03 j,S1
0.38 j,S1
218
0.069 j
17
1.48
5.1
<0.2
0.71
0.17 j
0.054
20.2
<0.5
8.04
<0.1
1.1
<10
<100
<0.5
0.39
12.8
<0.1
<50
<0.08
0.22 j,S1
0.03 j
GWA-22BRU
Deep
08/06/2018
0.04 j
0.34 j
162
<0.1
19.2
1.47
6.7
<0.2
1
1.1
0.067
20.3
<0.5
7.92
<0.1
0.95
<10
<100
<0.5
0.4
12.7
<0.1
<50
<0.08
0.47 j
0.029 j
GWA-22BRU
Deep
11/O1/2018
0.093 j
0.29 j,B
304
<0.1
10.1
1.6
26.7
<0.2
0.36 j
0.78
0.028
9.7
<0.5
5.9
<0.1
0.54
5.5 j
<100
<0.5
0.16
12.1
<0.1
<50
<0.08
0.57 S1
0.1
GWA-22S
Shallow
O1/31/2018
2.3
0.55 S3
648
0.11 S3
1.1
6.99
51.5
<0.2
<0.5
8.5
<0.02
<5
<0.5
6.33
<0.1
3.5
<10
<100
<0.5
<0.1
59.4
0.3
254
<0.08
10.6
2.4
GWA-22S
Shallow
05/03/2018
1.5
1.2
581
0.36
1
5.21
33
<0.2
<0.5
1.4
<0.02
<5
<0.5
4.86 j
0.044 j
1
9.4 j
<100
<0.5
<0.1
47.1
0.29
232
0.036 j
0.15 j,S1
1.4
GWA-22S
Shallow
08/06/2018
2.2
1.6
665
0.26
1.5
7.38
49.1
<0.2
0.34 j
9.4
0.012 j
<5
<0.5
6.2
0.046 j
0.4
7.9 j
80.1 j
<0.5
0.12
59.1
0.4
348
0.062 j
4.9
1.8
GWA-22S
Shallow
11/O1/2018
2.4
1.6 B
523
0.22
1.6 j
7.8
52.3
<0.2
<0.5
1.5
<0.02
<5
<0.5
6.8
0.041 j
0.73
7.6 j
79.7 j
<0.5
0.11
70.6
0.3
362
<0.08
0.27 j,S1
2
GWA-23D
Deep
O1/31/2018
0.76
<0.5
<50
<0.1
1.7
1.17
9.8
<0.2
<0.5
1.4 S3
1.3
<5
<0.5
<5
<0.1
<0.3
<10
<100
<0.5
<0.1
21
<0.1
<50
<0.08
<0.5
0.74
GWA-23D
Deep
05/O1/2018
0.89
IA SI
<50
0.03 j,SI
1.8
1.25
8.8
<0.2
<0.5
3.5
1.3
<5
<0.5
2.66 j
0.048 j
<0.3
4.1 j
<100
<0.5
<0.1
18.7
0.067 j
<50
<0.08
3.1
0.94
GWA-23D
Deep
08/06/2018
0.76
0.46 j
<50
0.04 j
1.7
1.33
30
<0.2
<0.5
3.2
1.4
<5
<0.5
2.69 j
0.048 j
<0.3
4.7 j,B
<100
<0.5
<0.1
19.5
0.1
<50
<0.08
0.59
0.78
GWA-23D
Deep
10/25/2018
0.72
0.61
<50
<0.1
1.6 j
1.3
8.5
<0.2
<0.5
1.2
1.4
<5
<0.5
2.5 j
0.046 j
<0.3
7.2 j
<100
<0.5
0.047 j
20.6
0.1
<50
<0.08
0.12 j
0.67
GWA-24BR
Bedrock
O1/31/2018
0.2
0.5 S1
<50
<0.1
2.9
1.47
<5
<0.2
<0.5
1.7
0.34
<5
<0.5
<5
<0.1
<0.3
<10
<100
<0.5
<0.1
7.4
<0.1
<50
<0.08
<0.5
0.19
GWA-24BR
Bedrock
05/03/2018
0.12 S1
0.13 j,S1
<50
0.26
2.6
1.57
<5
<0.2
<0.5
1.5
0.33
<5
<0.5
3.86 j
<0.1
<0.3
<10
<100
<0.5
0.12
8.3
<0.1
<50
<0.08
<0.5
0.11
GWA-24BR
Bedrock
08/06/2018
0.11
0.33 j
68.4
0.047 j
2.9
1 1.58
2.9 j
<0.2
<0.5
1.2
0.38
<5
<0.5
3.89 j
<0.1
<0.3
<10
<100
<0.5
<0.1
8.3
<0.1
<50
<0.08
<0.5
0.1
GWA-24BR
Bedrock
1O/30/2018
0.1
70.1
<50
<0.1
2.7
1.6
<5
<0.2
<0.5
19
0.47
<5
<0.5
3.9 j
<0.1
<0.3
2.7 j
<100
<0.5
<0.1
9
<0.1
<50
<0.08
0.24 j,S1
0.098 j
GWA-24D
Deep
01/31/2018
0.24
<0.5
<50
<0.1
1.9
1.18
5.2
<0.2
<0.5
1.5
1
<5
<0.5
<5
<0.1
<0.3
<10
<100
<0.5
<0.1
8.4
<0.1
<50
<0.08
<0.5
0.23
GWA-24D
Deep
05/03/2018
0.19 S1
0.27 j,S1
<50
<0.1
1.8
1.25
4.3 j
<0.2
<0.5
1.3
0.96
<5
<0.5
3.05 j
<0.1
<0.3
<10
<100
<0.5
<0.1
8.5
<0.1
<50
<0.08
0.15 j,S1
0.18
GWA-24D
Deep
08/06/2018
0.18
0.36 j
<50
<0.1
1.8
1.35
4.8 j
<0.2
<0.5
1.1
1.2
<5
<0.5
3.32 j
0.027 j
<0.3
4.5 j,B
<100
<0.5
<0.1
8.6
0.042 j
<50
<0.08
<0.5
0.18
GWA-24D
Deep
1O/30/2018
0.16
0.34 j
<50
<0.1
1.6 j
1.3
4.5 j
<0.2
<0.5
1.3
1.3
<5
<0.5
3.3 j
0.018 j
<0.3
3.6 j
<100
<0.5
<0.1
9.7
0.035 j
<50
<0.08
0.19 j,S1
0.16
GWA-24S
Shallow
01/31/2018
11.3
2.2 S1
5750
0.36 Sl
3
1.5
122
<0.2
<0.5
6
0.99
<5
<0.5
<5
0.14
1.2
14.5
<100
<0.5
<0.1
11.8
<0.1
<50
<0.08
<0.5
8.4
GWA-24S
Shallow
05/03/2018
4.5
1.5
33.6 j
0.068 j
1 1.7
1 0.607
29.4
<0.2
<0.5
2.7
0.018 j
<5
<0.5
2.64 j
0.031 j
<0.3
5.2 j
92.2 j
<0.5
0.049 j
10
0.085 j
27.3 j
<0.08
0.74 S1
4.7
Page 23 of 45

TABLE 3-3
2018 COMPREHENSIVE GROUNDWATER QUALITY DATA
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS LLC, MOORESBORO NC
Analytical Parameters
INORGANIC PARAMETERS (DISSOLVED CONCENTRATION WITH FILTER SIZE)
RADIONUCLIDES
OTHER PARAMETERS
Copper
Iron
Lead
Lithium
Manganese
Mercury
Molybdenum
Nickel
Phosphorus
Selenium
Strontium
Thallium
Vanadium
Zinc
Radium-226
Radium-228
Total
Radium
Uranium-238
Total Uranium
Uranium-238
(Dissolved)
Carbonate
Alkalinity
Fluoride
Phosphorus
Reporting Units
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
mg/L
ug/L
ug/L
ug/L
ug/L
ug/L
pCi/L
pCi/L
pCi/L
ug/mL
ug/mL
ug/mL
mg/L
mg/L
mg/L
15A NCAC 02L Standard
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
5^
NE
0.03^
NE
NE
2
NE
Background Threshold Values (Shallow Flow Zone)
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
2.58
NE
0.0005
NE
5
NE
NE
Background Threshold Values (Deep Flow Zone)
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
1.51
NE
0.0005
NE
5
NE
NE
Background Threshold Values (Bedrock Flow Zone)
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
3.1
NE
0.0005
NE
5
NE
NE
Sample ID
Sample Location
Aquifer Name
Sample
Collection Date
Analytical Results
GWA-14BR
Bedrock
05/04/2018
0.42 j
26.8 j
<0.1
NA
31.4
<0.2
5.7
1.9
<0.05
<0.5
106
<0.1
1.6
<10
NA
NA
NA
NA
NA
NA
<5
0.12
<0.05
GWA-14BR
Bedrock
08/02/2018
0.46 j,S1
<50
<0.1
NA
32.7
<0.2
26.9
0.58 Sl
<0.05
0.21 j
132
<0.1
1.3
<10
NA
NA
NA
NA
NA
NA
<5
0.15
<0.05
GWA-14BR
Bedrock
10/23/2018
0.61 SI
<50
<0.1
NA
40.9
<0.2
10.2
<0.5
<0.05
<0.5
105
<0.1
1.3
<10
NA
NA
NA
NA
NA
NA
<5
0.12
<0.05
GWA-14D
Deep
01/29/2018
2.5
<50
<0.1
NA
8.1
<0.2
0.88
4.5
<0.05
1.5
250
0.1
0.5 S1
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-14D
Deep
05/03/2018
3.6 S1
<50
<0.1
NA
3.4 j
<0.2
0.62
2.6
<0.05
1.4
214
0.085 j
0.52
5.5 j,B
NA
NA
NA
NA
NA
NA
<5
<0.1
0.032 j,S1
GWA-14D
Deep
08/02/2018
6.2
<50
0.094 j,S1
NA
5.2
<0.2
3.3
1.5 SS
<0.05
1
215
0.065 j
0.47
9.9 j
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-14D
Deep
10/23/2018
0.91 S1
<50
<0.1
NA
<5
<0.2
0.34j
1.1
<0.05
1
202
0.069j
0.34
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-20BR
Bedrock
01/30/2018
<0.5
2400
<0.1
NA
308
<0.2
1.2
0.65
<0.05
<0.5
680
<0.1
<0.3
<10
1.41 S1
1.21
2.62
<0.0005
<0.0005
NA
18.6
<0.1
<0.05
GWA-20BR
Bedrock
04/30/2018
0.18 j,S1
46.4 j
<0.1
NA
25.1
<0.2
2.9
0.32 j,S1
<0.05
<0.5
827
<0.1
0.4 S1
<10
0.743
0.766 U
1.51
0.000073 j
0.000073 j
0.0003 j
28.2
0.076 j
<0.05
GWA-20BR
Bedrock
07/30/2018
0.23 j,B,SI
4070
<0.1
NA
331
<0.2
2.1 S1
0.82 SI
<0.05
<0.5
610
<0.1
0.11 j,S1
<10
1.24
1.32 B
2.56
0.0003 j
0.0003 j
0.00015 j
<5
<0.1
<0.05
GWA-20BR
Bedrock
10/24/2018
1.2 SI
2980
<0.1
NA
347
<0.2
2
0.89
<0.05
<0.5
247
<0.1
<0.3
<10
2.33 SI
2.19
4.52
NA
0.00017 j
NA
<5
<0.1
<0.05
GWA-20D
Deep
01/30/2018
<0.5
1740
<0.1
NA
4890
<0.2
<0.5
6.7
<0.05
<0.5
434
0.74
<0.3
<10
0.538
0.622
1.16
<0.0005
<0.0005
NA
<5
<0.1 M1
<0.05
GWA-20D
Deep
04/30/2018
2.2 S1
918
<0.1
NA
5430
<0.2
<0.5
5.9
<0.05
<0.5
454
0.64
<0.3
10.5
0.176 U
0.482 U
0.658 U
<0.0005
<0.0005
<0.0005
<5
0.053j
<0.05
GWA-20D
Deep
07/30/2018
0.33 j,B,SI
1830
0.054 j,S1
NA
5450
<0.2
<0.5
5.7
<0.05
<0.5
513
0.61
0.076 j,S1
6.8j
0.709 U
0.955 B
1.66
<0.0005
<0.0005
<0.0005
<5
0.058j
<0.05
GWA-20D
Deep
10/24/2018
0.73 S1
1080
<0.1
NA
5460
<0.2
<0.5
6.1
<0.05
<0.5
492
0.66
<0.3
8.4 j,SI
0.796 SI
0.434 U
1.23 U
NA
<0.0005
NA
<5
<0.1
<0.05
GWA-20S
Shallow
01/30/2018
<0.5
495
<0.1
NA
1340
<0.2
<0.5
2.2
<0.05
<0.5
101
<0.1
<0.3
<10
0
-0.0872
-0.0872
<0.0005
<0.0005
NA
<5
<0.1
<0.05
GWA-20S
Shallow
04/30/2018
0.27 j,S1
831
0.23
NA
6130
<0.2
<0.5
4
<0.05
<0.5
130
0.059j
0.066 j,S1
3.2j
0.121 U
1.34
1.46 U
0.00024j
0.00024j
0.00015j
<5
<0.1
<0.05
GWA-20S
Shallow
07/30/2018
0.23 j,B,SI
328
<0.1
NA
8500
<0.2
0.1 j,S1
3.5
<0.05
<0.5
135
0.11
0.1 j,S1
5.6 j
-0.121 U
-0.135 U
0 U
0.00039 j
0.00039 j
0.00011 j
<5
<0.1
<0.05
GWA-20S
Shallow
10/24/2018
0.4 j,S1
465
<0.1
NA
5230
<0.2
<0.5
2.7
<0.05
<0.5
117
0.092 j
<0.3
5.1 j,S1
0.549 U
-0.998 U
0.549 U
NA
0.00042 j
NA
<5
<0.1
<0.05
GWA-21BR
Bedrock
01/26/2018
<0.5
3240
<0.1
NA
352
<0.2
<0.5
1.5 Sl
<0.05
<0.5
253
<0.1
<0.3
<10
2 B,S1
2.67 B
4.67
<0.0005
<0.0005
NA
<5
<0.1
<0.05
GWA-21BR
Bedrock
04/26/2018
<0.5
3000
<0.1
NA
345
<0.2
<0.5
0.47 j,S1
<0.05
<0.5
240
<0.1
0.075 j,S1
<10
2.28 SI
2.4
4.68
<0.0005
<0.0005
<0.0005
<5
0.066j
<0.05
GWA-21BR
Bedrock
07/30/2018
0.14 j,B,SI
3120
<0.1
NA
369
<0.2
<0.5
0.46 j,SI
<0.05
<0.5
255
<0.1
0.087 j,S1
<10
2.7
4.75 B
7.45
<0.0005
<0.0005
<0.0005
<5
0.072 j
<0.05
GWA-21BR
Bedrock
10/24/2018
0.23 j,S1
9360
<0.1
NA
442
<0.2
<0.5
<0.5
0.026 j
<0.5
423
<0.1
<0.3
<10
3.28 SI
3.64
6.92
NA
<0.0005
NA
<5
0.066 j
<0.05
GWA-21BRU
Deep
01/26/2018
<0.5
84.7
<0.1
NA
120
<0.2
1.3
2.4
<0.05
<0.5
135
0.18
<0.3
<10
0.199
1.46 B
1.659
<0.0005
<0.0005
NA
<5
<0.1
<0.05
GWA-21BRU
Deep
04/26/2018
1.3 S1
79.6
<0.1
NA
59.9
<0.2
0.61
3.5
<0.05
0.26 j
119
0.15
<0.3
<10
0.33 U
0.432 U
0.762 U
<0.0005
<0.0005
<0.0005
<5
<0.1
<0.05
GWA-21BRU
Deep
07/30/2018
1.4 B,S1
56.1
<0.1
NA
91.2
<0.2
1 Sl
2.5
<0.05
0.18 j
145
0.17
<0.3
<10
0.0241 U
0.428 U
0.452 U
<0.0005
<0.0005
<0.0005
<5
0.061 j
<0.05
GWA-21BRU
Deep
10/24/2018
0.63 SI
81.5
<0.1
NA
103
<0.2
1
2.2
<0.05
<0.5
130
0.19
<0.3
6.4 j,S1
0.327 U
-0.0881 U
0.327 U
NA
<0.0005
NA
<5
0.06 j
<0.05
GWA-21S
Shallow
01/26/2018
0.8 S1
<50
<0.1
NA
36.5
<0.2
17.2
2.3
<0.05
2
155
0.18
5.2
<10
0.615 B,S1
0.877 B
1.492
<0.0005
<0.0005
NA
<5
0.36
<0.05
GWA-21S
Shallow
04/26/2018
2.7 S1
<50
<0.1
NA
<5
<0.2
24.7
0.98 SI
<0.05
3.1
144
0.19
63
<10
0.0622 U
0.712 U
0.774 U
0.000069j
0.000069j
0.000069j
76
0.26
<0.05
GWA-21S
Shallow
07/30/2018
1 B,S1
<50
0.064 j,S1
NA
15.5
<0.2
4.8 S1
0.66 S1
<0.05
2.5
266
0.52
5.1
<10
0.0956 U
-0.126 U
0.0956 U
0.0012
0.0012
0.0013
<5
<0.1
<0.05
GWA-21S
Shallow
10/24/2018
0.98 SI
<50
<0.1
NA
75.8
<0.2
4
1.5
<0.05
0.9
168
0.38
1.9
4.6 j,S1
0.598 U
0.266 U
0.864 U
NA
0.00012 j
NA
<5
0.064 j
<0.05
GWA-22BRU
Deep
01/31/2018
<0.5
108
<0.1
NA
12.5
<0.2
0.64
0.78
<0.05
<0.5
121
<0.1
0.92
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-22BRU
Deep
05/03/2018
0.45j
<50
<0.1
NA
<5
<0.2
0.74
0.66
<0.05
<0.5
126
<0.1
1
138
NA
NA
NA
NA
NA
NA
<5
0.061j
0.029 j,S1
GWA-22BRU
Deep
08/06/2018
0.26 j
25.9 j
<0.1
NA
5.7
<0.2
0.95
0.58
0.034 j
<0.5
117
<0.1
0.94
2.7 j
NA
NA
NA
NA
NA
NA
<5
0.061 j
0.028 j
GWA-22BRU
Deep
11/01/2018
0.76 SI
372
<0.1
NA
37.8
<0.2
0.3 j
2.2
0.04 j
<0.5
103
<0.1
0.41
5.4 j
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-22S
Shallow
01/31/2018
0.75 SI
370
<0.1
NA
45.7
<0.2
<0.5
10.9
<0.05
<0.5
68
<0.1
<0.3
<10
0.391
0.367
0.758
<0.0005
<0.0005
NA
<5
<0.1
<0.05
GWA-22S
Shallow
05/03/2018
0.55
44.6 j
0.07 j
NA
29.5
<0.2
<0.5
1.4
<0.05
<0.5
53.2
0.037 j
0.3 j
4.1 j
0.287 U
0.508 U
0.795 U
<0.0005
<0.0005
<0.0005
<5
<0.1
<0.05
GWA-22S
Shallow
08/06/2018
0.88
187
0.11
NA
43.1
<0.2
0.11 j
4.2
<0.05
<0.5
66.1
0.046 j
0.088 j
4.9 j
0.26 U
0.467 U
0.727 U
<0.0005
<0.0005
<0.0005
<5
<0.1
<0.05
GWA-22S
Shallow
11/01/2018
0.91 SI
358
0.098 j
NA
48.7
<0.2
<0.5
1.3
<0.05
<0.5
74
0.034 j
0.17 j
8.3 j
0.914
0.602 U
1.52
NA
<0.0005
NA
<5
<0.1
<0.05
GWA-23D
Deep
01/31/2018
0.55 SI
<50
<0.1
NA
7.7
<0.2
<0.5
1.4
<0.05
<0.5
15.3
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-23D
Deep
05/01/2018
2.2 S1
<50
<0.1
NA
9.1
<0.2
<0.5
6.9
<0.05
<0.5
15
0.044 j
<0.3
4.3 j,B
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-23D
Deep
08/06/2018
0.98
<50
0.091 j
NA
9.2
<0.2
<0.5
4.4
<0.05
<0.5
15.2
0.048 j
<0.3
4.6 j
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-23D
Deep
10/25/2018
3.9
<50
<0.1
NA
8.4
<0.2
<0.5
1.7
<0.05
<0.5
15.7
0.046 j
<0.3
16.5
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-24BR
Bedrock
01/31/2018
<0.5
<50
<0.1
NA
<5
<0.2
<0.5
1.7
<0.05
<0.5
25.4
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-24BR
Bedrock
05/03/2018
0.53
<50
<0.1
NA
<5
<0.2
<0.5
1.7
<0.05
<0.5
26.9
<0.1
0.089 j
<10
NA
NA
NA
NA
NA
NA
<5
0.065 j
<0.05
GWA-24BR
Bedrock
08/06/2018
0.49 j
<50
<0.1
NA
<5
<0.2
<0.5
1.2
<0.05
<0.5
26.5
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
0.065 j
<0.05
GWA-24BR
Bedrock
10/30/2018
1.2 S1
<50
<0.1
NA
<5
<0.2
<0.5
1.5
<0.05
<0.5
29.3
<0.1
<0.3
3.8 j,SI
NA
NA
NA
NA
NA
NA
<5
0.06 j
<0.05
GWA-24D
Deep
01/31/2018
<0.5
<50
<0.1
NA
<5
<0.2
<0.5
1.4
<0.05
<0.5
19.9
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-24D
Deep
05/03/2018
1.7
<50
0.038 j
NA
4.1 j
<0.2
<0.5
1.4
<0.05
<0.5
21.6
<0.1
<0.3
3.9 j,B
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-24D
Deep
08/06/2018
0.42 j
<50
<0.1
NA
3.8 j
<0.2
<0.5
1
<0.05
<0.5
19.7
0.027 j
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-24D
Deep
10/30/2018
0.82 S1
<50
<0.1
NA
4.1 j
<0.2
<0.5
1.7
<0.05
<0.5
22.7
0.019 j
<0.3
12.2 S1
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-24S
Shallow
01/31/2018
0.92 SI
<50
<0.1
NA
101
<0.2
<0.5
4.8
<0.05
<0.5
14.7
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-24S
Shallow
1 05/03/2018
2.9
<50
<0.1
NA
32.8
<0.2
<0.5
2.6
<0.05
<0.5
1 2.8 j
0.032 j
<0.3
6.2 j,B
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
Page 24 of 45

TABLE 3-3
2018 COMPREHENSIVE GROUNDWATER QUALITY DATA
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS LLC, MOORESBORO NC
Analytical Parameters
FIELD PARAMETERS
WATER QUALITY PARAMETERS
SELECTED 40CFR257 APPENDIX III CONSTITUENTS plus Sr
INORGANIC PARAMETERS (TOTAL CONCENTRATION)
pH
Water
Level
Temp
Spec
Cond
DO
ORP
Eh
Turbidity
Alkalinity
Bi-
carbonate
Alkalinity
Sulfide
Total
Organic
Carbon
Total
Suspended
Solids
Boron
Calcium
Chloride
Strontium
Sulfate
Total
Dissolved
Solids
Aluminum
Antimony
Arsenic
Barium
Beryllium
Cadmium
Chromium
(VI)
Chromium
Reporting Units
S.U.
ft
Deg C
umhos/cm
mg/L
mV
mV
NTUs
mg/L
mg/L
mg/L
mg/L
mg/L
ug/L
mg/L
mg/L
ug/L
mg/L
mg/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
15A NCAC 02L Standard
6.5-8.5
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
700
NE
250
NE
250
Soo
NE
1*
SO
700
4*
2
SO
10
Background Threshold Values (Shallow Flow Zone)
4.4-6.1
NE
NE
NE
NE
NE
NE
NE
13.67
14.42
0.1
1
NE
50
3.221
7.7
36.71
1.169
75.47
253
1
0.5
73.03
0.188
1
0.452
3.968
Background Threshold Values (Deep Flow Zone)
4.8-6.1
NE
NE
NE
NE
NE
NE
NE
19.74
18.13
0.1
1
NE
50
11
5.1
56.14
10
70.98
290
1
0.763
23
0.2
1
0.16
1.791
Background Threshold Values (Bedrock Flow Zone)
5.4-7.4
NE
NE
NE
NE
I NE
I NE
NE
53
68.82
0.1
1
NE
50
16
8.656
107.1.
15.1
1.20
208.2
1
1
19.33
1
1
0.12
3.567
Sample ID
Sample Location
Aquifer Name
Sample
Collection Date
Analytical Results
GWA-24S
Shallow
08/06/2018
5.1
21.25
25
36
5.00
91
296
3.0
3.1 j
3.1 j
<0.1
<1
<2.5
28.5 j
0.604
5.3
7.7
1.3
29
92.2 j
<0.5
<0.1
15.3
0.071 j
<0.08
0.099
0.34 j
GWA-24S
Shallow
10/30/2018
5.4
20.90
14
40
5.70
103
308
1.8
4.1 j
4.1 j
<0.1
<1
<2.5
<50
1
3.2
15.5
2.5
37
72.1 j
<0.5
<0.1
13.6
0.075 j
<0.08
0.4 M1,SI
2.1
GWA-25S
Shallow
02/01/2018
5.4
22.73
15
46
5.70
93
298
2.2
5.7
5.7
<0.1
<1
<2.5
<50
1.49
3.8
21.5
<1
30 D6
171
NA
NA
38.9
NA
NA
0.05
NA
GWA-25S
Shallow
05/04/2018
4.8
21.98
19
45
6.30
202
407
4.1
3.3 j
3.3 j
<0.1
<1
<2.5
<50
1.42
3.7
17.2 SI
<1
39 D6
<100
<0.5
<0.1
31.4
0.075 j
<0.08
0.098 SI
0.21 j,S1
GWA-25S
Shallow
08/07/2018
5.1
22.48
23
47
5.20
202
407
0.6
4.4 j
4.4 j
<0.1
<1
<2.5
<50
1.54
4.1
22.3
<1
42
<100
<0.5
<0.1
39.3
0.086 j
<0.08
0.076
0.19 j
GWA-25S
Shallow
11/02/2018
5.4
22.41
16
48
5.50
138
343
0.8
4.3 j
4.3 j
<0.1
<1
<2.5
<50
14.4
4.1
103
<1
34 D6
73.8 j
<0.5
0.042 j
41
0.071 j
<0.08
0.22
0.18 j,S1
GWA-26S
Shallow
01/29/2018
4.7
20.41
15
22
6.10
44
249
3.3
<5
<5
<0.1
<1
<2.5
<50
<0.1
3.1
<5
<1
<25
113
<0.5
0.13 S1
31.4
<0.1
<0.08
<0.025
IAS1
GWA-26S
Shallow
05/07/2018
4.8
17.73
17
19
6.30
186
391
9.2
<5
<5
<0.1
<1
4.5
<50
<0.1
2.4
<5
<1
<25
490
<0.5
0.078j
20.2
0.054j
<0.08
0.025 S1
0.22 j,S1
GWA-26S
Shallow
08/07/2018
4.7
19.46
35
23
4.10
238
443
2.2
1.8 j
1.8 j
<0.1
<1
<2.5
<50
<0.1
3.1
4.1 j
<1
<25
266
<0.5
0.095 j
33.8
0.061 j
<0.08
0.058
0.45 j
GWA-26S
Shallow
11/01/2018
5.0
19.46
22
23
5.70
83
288
7.4
<5
<5
<0.1
<1
<2.5
<50
<0.1
3.1
4.1 j
<1
<25
172
<0.5
0.13
33
0.05 j
0.057 j
<0.025
0.42 j,B,BC,SI
GWA-27BR
Bedrock
01/26/2018
6.6
47.87
16
304
0.20
27
232
9.9
129 MI
129
<0.1
<1
<2.5
381
39.9
15.8
354
5.4
192
<200
<0.5
0.32
24.5
<0.1
<0.08
<0.025
37.2
GWA-27BR
Bedrock
05/02/2018
6.6
46.11
25
300
0.80
4
209
9.7
127
127
<0.1
<1
<2.6
219
42.4
16.9
171
4.6
193
<100
0.23 j,S1
1 SI
12.4
<0.1
<0.08
<0.025
1.7
GWA-27BR
Bedrock
08/03/2018
6.4
47.77
23
311
0.30
-16
189
5.6
119
119
<0.1
<1
<5
245
40.6
20.4
172
4.1
200
<100
<0.5
0.11
12.2
<0.1
<0.08
0.045
0.44j
GWA-27BR
Bedrock
10/22/2018
6.4
48.16
17
313
0.90
34
239
2.2
125
125
<0.1
0.5 j
<2.8
222
36.2
21.5 M1
165
4.6 M1
198
<100
<0.5
0.13
10.1
<0.1
<0.08
<0.025
0.33 j,S1
GWA-27DA
Deep
01/26/2018
5.1
49.22
18
377
0.60
29
234
8.9
<5
<5
<0.1
<1
<2.5
926
40
58.2
111
70.6
226
104
<0.5
<0.5 D3
152
0.23
0.13
0.14 SI
<0.5
GWA-27DA
Deep
05/01/2018
5.2
48.34
21
415
0.80
107
312
1.9
2j
2j
<0.1
<1
<2.5
920
48.7
75.3
101
64.8
256
66.8j
0.16j
0.22
141
0.18
0.13
0.19 SI
6.1
GWA-27DA
Deep
08/03/2018
4.5
49.22
21
451
1.00
178
383
4.3
1.1 j
1.1 j
<0.1
<1
<2.5
1110
51.8
95.8
115
61.6
274
115
<0.5
0.21
170
0.2
0.12
0.13
0.32 j
GWA-27DA
Deep
10/22/2018
5.2
49.42
19
457
1.00
96
301
0.0
2j
2j
<0.1
<1
<2.5
952
48
95.9
109
65.8
256
<100
<0.5
0.3
150
0.19
0.51
0.1
0.32 j,S1
GWA-28BR
Bedrock
01/26/2018
6.8
47.48
14
177
0.50
-65
141
5.2
65.4
65.4
<0.1
<1
5.3
<50
19.6
4.2
93.1
5
106
<100
<0.5
<0.1
8.6
<0.1
<0.08
<0.025
0.6 S1
GWA-28BR
Bedrock
04/26/2018
6.6
46.44
17
165
0.30
-31
174
2.5
56.9
56.9
<0.1
<1
5.2
<50
18.7
3.9
85.4
5.5
150
<100
0.19 j
0.066 j,SI
7.7
<0.1
<0.08
<0.025
0.44 j,S1
GWA-28BR
Bedrock
08/07/2018
6.2
41.80
24
118
0.90
-64
141
8.9
36.5
36.5
<0.1
<1
<2.5
<50
6.24
2.5
52.9
12
85
<100
<0.5
0.22
8
<0.1
<0.08
<0.025 M1,RI
0.18 j
GWA-28BR
Bedrock
10/29/2018
6.6
47.08
17
152
0.30
-40
165
1.2
58.5
58.5
<0.1
<1
<5
<50
15.3
3.7
75.1
5.7
134
<100
0.45 j
<0.1
7.5
0.017 j
<0.08
<0.025
0.11 j
GWA-28BRU
Deep
01/26/2018
6.5
42.38
17
106
0.30
3
208
9.7
31.5
31.5
<0.1
<1
2.9
<50
5.59
2.3
48.6
10.7
80
<100
<0.5
0.31
7.7
<0.1
<0.08
<0.025
1.2 S1
GWA-28BRU
Deep
04/26/2018
6.1
38.20
18
105
0.40
-6
199
6.2
12
12
<0.1
<1
4.7
<50
5.36
2.3
43.5
10.7
104
<100
0.12j
0.36 S1
8.4
<0.1
0.032j
<0.025
0.5 S1
GWA-28BRU
Deep
07/30/2018
6.2
42.02
26
132
1.50
7
212
9.6
41.5
41.5
<0.1
<1
<2.5
<50
5.88
2.5
47.9
11.1
113
53.4 j,S1
0.12 j
0.23 S1
6.9
<0.1
<0.08
<0.025
0.37 j
GWA-28BRU
Deep
10/29/2018
6.3
41.25
19
127
1.30
16
221
4.8
39.7
39.7
<0.1
<1
<2.5
<50
6
2.4
49.1
11
99
<100
<0.5
0.19
6.7
<0.1
<0.08
<0.025
0.14 j
GWA-28S
Shallow
05/01/2018
4.8
29.25
23
37
3.30
206
411
9.8
<5
<5
<0.1
<1
8.9
<50
0.496
2.7
4.8 j
1.6
<25
400
<0.5
0.23
33
0.087 j
<0.08
0.38 S1
2.4
GWA-28S
Shallow
07/30/2018
4.9
Top of Pump
30
42
3.00
185
390
6.4
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
GWA-28S
Shallow
10/29/2018
4.6
31.35
20
43
3.00
131
336
4.0
1.2 j
1.2 j
<0.1
0.62 j
7 D6
<50
0.48
2.8
5
1.5
27
291
<0.5
0.12
33
0.075 j
<0.08
0.031
0.44 j
GWA-29BRA
Bedrock
01/29/2018
7.9
17.19
15
230
0.60
-80
125
8.8
108
108
<0.1
<1
3.7
<50
30.9
3.8
264
12.9
147
136
<0.5
2
23.6
<0.1
<0.08
<0.025
1.5 SI
GWA-29BRA
Bedrock
05/02/2018
7.7
16.64
25
231
2.13
60
265
1.5
96.7
96.7
<0.1
0.58j
<5
<50
31.3
3.2
220
10.7
139
<100
0.14 j,S1
1.4 S1
18.6
<0.1
<0.08
0.079 SI
0.3 j,SI
GWA-29BRA
Bedrock
08/03/2018
7.6
16.78
23
227
2.30
36
241
0.3
98.9
98.9
<0.1
<1
<5
<50
32.5
3.1
220
10.8
151
61.1 j
0.14 j
1.1
22.4
<0.1
<0.08
0.18
0.71
GWA-29BRA
Bedrock
10/29/2018
7.7
16.52
15
219
0.50
-11
194
2.6
97
97
<0.1
0.52j
<2.5
<50
30.7
2.8
189
10.2
149
<100
1.3
2.1
24.8
<0.1
<0.08
<0.025
0.66
GWA-29D
Deep
01/29/2018
5.8
22.79
14
131
6.00
108
313
2.9
26.3
26.3
<0.1
<1
<2.5
<50
9.75
13.9
38.3
8.4
68
328
<0.5
<0.1
32.9
<0.1
<0.08
1.9
2.4 S1
GWA-29D
Deep
05/02/2018
5.8
22.44
26
122
4.30
185
390
4.6
26.4
26.4
<0.1
<1
<5
<50
9.65
12.8
34.3
7.6
66
165
<0.5
0.052 j,SI
25.9
<0.1
<0.08
0.22 SI
0.21 j,SI
GWA-29D
Deep
08/03/2018
5.7
22.04
21
121
4.10
138
343
9.1
25.9
25.9
<0.1
<1
3
<50
10.1
14.1
37.6
8.4
73
317
<0.5
0.061 j
31.1
<0.1
<0.08
0.13
0.59
GWA-29D
Deep
10/29/2018
5.4
22.84
15
113
5.00
12
217
4.8
23.3
23.3
<0.1
0.51j
<2.5
<50
9.1
13.4
34.2
7.8
62
<100
<0.5
0.071j
28.4
0.013j
<0.08
0.097
4.1
GWA-30BR
Bedrock
01/31/2018
6.4
35.27
11
149
0.40
-1
204
5.9
38.2
38.2
<0.1 MI
<1
7.5
<50
12.4
8
72.3
16.5
95
256
<0.5
0.67
12.4
<0.1
<0.08
<0.025
IA SI
GWA-30BR
Bedrock
05/03/2018
6.2
34.77
22
124
0.40
-57
148
3.4
25.9
25.9
<0.1
<1
<5
<50
9.6
5.9
49.1
13.3
86
134
<0.5
0.2
8.4
0.041 j
<0.08
<0.025
0.37 j,SI
GWA-30BR
Bedrock
07/31/2018
6.3
35.28
21
113
0.40
-61
144
9.7
27.1
27.1
<0.1
<1
<2.5
<50
8.56
5.8
44.5
12.4
92
155
0.094j
0.12 SI
7.3
<0.1
<0.08
<0.025
0.37 j,S1
GWA-30BR
Bedrock
10/22/2018
6.2
35.16
16
114
0.40
-32
174
9.3
28.5
28.5
<0.1
<1
3.2
<50
7.8
5.9
45
12.8
86
111
0.32 j
0.097 j
6.4
0.058 j
<0.08
<0.025
0.64 SI
GWA-30S
Shallow
01/31/2018
5.7
26.94
10
50
1.00
8
213
1.7
17.1
17.1
<0.1
<1
<2.5
<50
3.56
4.1
26.9
<1
33
<100
<0.5
<0.1
19.6
<0.1
<0.08
0.027 S1
<0.5
GWA-30S
Shallow
05/03/2018
5.5
25.44
20
43
1.00
59
264
7.9
2.2 j
2.21-
<0.1
<1
<5
<50
1.88
4.1
17.2
<1
34 D6
67.4 j
<0.5
0.067 j
25.4
0.12
<0.08
0.26
0.99 SI
GWA-30S
Shallow
07/31/2018
5.7
26.12
20
49
1.10
94
299
2.4
14.7
14.7
<0.1
<1
<2.5
<50
3.01
4.4
23.9
0.52 j
43
<100
<0.5
0.092 j,SI
20.8
0.038 j
<0.08
<0.025
4
GWA-30S
Shallow
10/22/2018
5.9
26.36
16
57
0.80
50
255
1.3
15
15
<0.1
<1
<2.5
<50
3.6
4.4
27.3
0.71 j
40
<100
<0.5
0.11
17
0.027 j
<0.08
<0.025
0.57 S1
GWA-31BRA
Bedrock
01/31/2018
8.2
74.35
6
556
0.80
-138
67
9.2
113
113
0.5
<1
5.3
<50
28.2
1.5
70
167
392
491
<0.5
1.5
15.6
<0.1
<0.08
<0.025
4.1
GWA-31BRA
Bedrock
05/03/2018
8.0
58.86
24
560
0.20
193
398
9.9
112
112
0.5
<1
13.8
26.6j
27.2
1.5
57
162
360
494
0.25j
2.1
13.2
<0.1
<0.08
<0.025
3.4
GWA-31BRA
Bedrock
08/06/2018
7.9
73.14
29
462
0.40
-128
77
6.7
105
105
0.41
<1
3.3
36.1j
23
1.5
46.3
109
306
158
0.22j
2.2
7.3
<0.1
<0.08
<0.025
0.84
GWA-31BRA
Bedrock
10/31/2018
7.9
58.55
23
418
0.30
-321
-116
4.0
118
118
0.19
0.51 j
<2.5
39.4 j
22.7
1.2 M1
43.1
95.1 M1
290
<100
<0.5
1.9
5.9
<0.1
<0.08
0.054
0.34 j,S1
GWA-31D
Deep
01/31/2018
6.9
16.90
5
1243
4.00
136
341
4.2
109
109
<0.1
1.6
<2.5
50.9
194
17.4
549
542
880
130
<0.5
0.44
46.3
<0.1
<0.08
0.17 S1
<0.5
GWA-31D
Deep
05/03/2018
6.8
17.50
22
1191
4.20
104
309
1.9
143
143
<0.1
2.3
<2.7
40.8j
170
17.7
476
373
850
<100
<0.5
0.31
58.4
<0.1
<0.08
0.31
0.66 SI
GWA-31D
Deep
08/06/2018
6.6
16.94
34
1050
1.60
-74
131
3.5
131
131
<0.1
2.5
<2.5
59.4
168
15.4
452
403
866
208
<0.5
0.56
68.2
<0.1
<0.08
0.14
0.4j
GWA-31D
Deep
10/31/2018
6.7
16.97
26
1140
2.90
31
236
1.4
175
175
1 <0.1
2.3
<2.5
76
167
14.3
519
342
904
61.9j
<0.5
0.38
65.5
<0.1
<0.08
1.9
5.7
Page 25 of 45

TABLE 3-3
2018 COMPREHENSIVE GROUNDWATER QUALITY DATA
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS LLC, MOORESBORO NC
Analytical Parameters
INORGANIC PARAMETERS (TOTAL CONCENTRATION)
INORGANIC PARAMETERS (DISSOLVED CONCENTRATION WITH FILTER SIZE)
Cobalt
Copper
Iron
Lead
Lithium
Magnesium
Manganese
Mercury
Molybdenum
Nickel
Nitrate
+ Nitrite
Potassium
Selenium
Sodium
Thallium
Vanadium
Zinc
Aluminum
Antimony
Arsenic
Barium
Beryllium
Boron
Cadmium
Chromium
Cobalt
Reporting Units
ug/L
ug/L
ug/L
ug/L
ug/L
mg/L
ug/L
ug/L
ug/L
ug/L
mg-N/L
mg/L
ug/L
mg/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
15A NCAC 02L Standard
1*
1000
300
15
NE
NE
50
1
NE
100
NE
NE
20
NE
0.2*
0.3*
1000
NE
NE
NE
NE
NE
NE
NE
NE
NE
Background Threshold Values (Shallow Flow Zone)
10.65
6.569
765.3
1
NE
2.479
168.8
0.2
1
6.256
8.837
5
1
6.139
0.117
1.059
15
NE
NE
NE
NE
NE
NE
NE
NE
NE
Background Threshold Values (Deep Flow Zone)
9.041
9.453
559.7
1
NE
1.6
78.31
0.2
1
12.56
2.8
5
1
4.41
0.063
1.095
15.03
NE
NE
NE
NE
NE
NE
NE
NE
NE
Background Threshold Values (Bedrock Flow Zone)
1.497
5
6220
1
NE
2.328
89.4
0.2
1.716
5
0.92
5
1
1 7.42
0.1
0.37
10
NE
NE
NE
NE
NE
NE
NE
NE
NE
Sample ID
Sample Location
Aquifer Name
Sample
Collection Date
Analytical Results
GWA-24S
Shallow
08/06/2018
5.3
0.56
44.2 j
<0.1
2.1
0.715
57.2
<0.2
<0.5
2.9
0.34
<5
<0.5
3.12 j
0.065 j
<0.3
4.8 j,B
<100
<0.5
<0.1
11.6
0.063 j
<50
<0.08
0.19 j
3.8
GWA-24S
Shallow
10/30/2018
5.3
2
42.6 j
<0.1
2 j
1
33.9
<0.2
<0.5
5
1.3
<5
<0.5
3.3 j
0.062 j
<0.3
5.4 j
<100
<0.5
<0.1
13.1
0.046 j
<50
<0.08
0.11 j,S1
4.6
GWA-25S
Shallow
02/O1/2018
NA
NA
199
NA
NA
1.44
29.1
<0.2 M1
NA
NA
2
<5
NA
<5
NA
NA
<70 B
<100
NA
NA
32.9
NA
<50
NA
NA
NA
GWA-25S
Shallow
05/04/2018
3
1.1
28.9 j
0.037 j,B
1.7
1.32
25.1
<0.2
<0.5
1.4S1
1.9
<5
<0.5
2.87 j
0.045 j
<0.3
<10
<100
<0.5
<0.1
34.3
0.065 j
<50
<0.08
0.2 j
2.8
GWA-25S
Shallow
08/07/2018
2.5
0.28 j
<50
0.048 j
1.7
1.38
25.4
<0.2
<0.5
1.1
2.1
<5
<0.5
3.19 j
0.05 j
<0.3
4.9 j
<100
<0.5
<0.1
35.2
0.071 j
<50
<0.08
0.18 j
2.2
GWA-25S
Shallow
11/02/2018
2.3
0.39 j,SI
113
<0.1
1.8 j
4.3
27.3
<0.2
<0.5
1.2
2.1
2.6 j
<0.5
4.6 j
0.037 j
0.079 j,S1
5 j
<100
<0.5
<0.1
35.3
0.063 j,51
<50
<0.08
0.21 j,S1
2
GWA-26S
Shallow
O1/29/2018
0.8
1 S1
83.7
0.2 B,S1
1.1
0.445
18.2
<0.2
<0.5
1.6
0.042 SI
<5
<0.5
<5
<0.1
<0.3
<10
<100
<0.5
<0.1
30.8
<0.1
<50
<0.08
0.53
0.76
GWA-26S
Shallow
05/07/2018
0.56
0.6
580
0.17
0.79
0.259
30.6
<0.2
<0.5
0.27 j,B,Sl
<0.02
<5
<0.5
1.86 j
0.029 j
0.098 j
5.8 j
<100
<0.5
0.05 j
16.7
0.041 j
<50
<0.08
0.31 j
0.56
GWA-26S
Shallow
08/07/2018
0.74
2.6
300
0.35
1.1
0.449
21.6
<0.2
<0.5
0.58
0.023
<5
<0.5
1.71 j
0.03 j
<0.3
5.7 j
<100
<0.5
0.085 j
30.1
0.072 j
<50
<0.08
0.49 j
0.89
GWA-26S
Shallow
11/01/2018
0.89
0.27 j,B
186
0.26
1.3 j
0.45
19.6
<0.2
<0.5
0.67
0.03
<5
<0.5
1.6 j
0.031 j
0.26 j
5 j
<100
<0.5
0.055 j
31.5
0.048 j
<50
<0.08
0.15 j,S1
0.79
GWA-27BR
Bedrock
O1/26/2018
0.43
1.9
2750
<0.1
19.7
3.45
144
<0.2
2.4
16.3
0.087 SI
<5
<0.5
13.1
<0.1
<0.3
<20
<100
<0.5
0.22
10.8
<0.1
175
<0.08
3.4
0.14
GWA-27BR
Bedrock
05/02/2018
0.1
0.58
1170
0.052 j
18.2 S3
3.66
31.9
<0.2
1.4 S3
2 S3
0.025
4.66 j
0.62
12.9
<0.1
<0.3
3.7 j
<100
0.23 j
0.45
10.4
<0.1
177
<0.08
0.7
0.088 j
GWA-27BR
Bedrock
08/03/2018
0.081 j
0.33 j
369
<0.1
19
3.74
16.2
<0.2
3.5
3.1
0.27
5.96
0.52
14.5
<0.1
0.2 j
5.1 j
<100
<0.5
0.11
10
<0.1
201
<0.08
0.16 j,B
0.067 j
GWA-27BR
Bedrock
10/22/2018
0.063 j
0.54 Sl
371
<0.1
19.2
3.3
14.3
<0.2
2.1
1.6
3.3
5.9
0.64
14.3
<0.1
0.12 j
3.4 j,B
<100
<0.5
0.13 Sl
9.7
<0.1
209
<0.08
0.12 j
0.067 j
GWA-27DA
Deep
O1/36/2018
0.72
<0.5
62.3
<0.1
1.5
3.5
1240
<0.2
<0.5
0.6 Sl
0.16
<5
4.5
10.5
0.14
<0.3
<10
<100
<0.5
0.24
135
0.19
808
0.14
<0.5
0.69
GWA-27DA
Deep
05/01/2018
0.91
0.72 S3
262
<0.1
1.6
4.02
1210
<0.2
0.2 j
4.6
0.098
3.22 j
2.9
11.5
0.17
<0.3
4.4 j
<100
<0.5
0.22
136
0.2
910
0.13
1.6
0.9
GWA-27DA
Deep
08/03/2018
0.82
0.26 j
62.2
0.077 j
1.5
4.06
1450
<0.2
0.45 j
0.59 B
0.15
3.62 j
2.5
12
0.14
<0.3
5.1 j,B
<100
<0.5
0.21
148
0.19
925
0.12
0.33 j
0.82
GWA-27DA
Deep
10/22/2018
0.86
0.95 Sl
<50
<0.1
1.4 j
3.6
1330
<0.2
0.42 j
0.83
0.1
2.9 j
2.5
10.2
0.16
<0.3
7.2 j,B
<100
<0.5
0.33 Sl
147
0.2
915
0.37
0.39 j
0.85
GWA-28BR
Bedrock
O1/36/2018
0.23
<0.5
5860
<0.1
3.8
2.16
92
<0.2
<0.5
0.82 SI
<0.02
<5
<0.5
6.43
<0.1
<0.3
<10
<100
<0.5
<0.1
7.9
<0.1
<50
<0.08
<0.5
0.21
GWA-28BR
Bedrock
04/26/2018
0.14
0.39 j,S1
5530
0.048 j
3.3
2.03
86
<0.2
<0.5
0.67
0.013 j
<5
<0.5
6.38
<0.1
0.18 j,51
3.2 j
<100
<0.5
OA Sl
7.3
<0.1
<50
<0.08
0.42 j,S1
0.12
GWA-28BR
Bedrock
08/07/2018
7.8
0.56
6280
0.073 j
11.1
1.77
60.4
<0.2
3.2
2.8
0.011 j
7.91
<0.5
7.32
<0.1
<0.3
6.6 j
<100
<0.5
0.21
7
<0.1
<50
<0.08
<0.5
8.2
GWA-28BR
Bedrock
10/29/2018
0.069 j
5.8
4980
0.14
3
1.6
77.5
<0.2
2.5
0.66
<0.02
<5
<0.5
5.8
<0.1
<0.3
7.5 j
<100
0.35 j
<0.1
7.5
0.014 j
<50
<0.08
0.11 j,S1
0.068 j
GWA-28BRU
Deep
O1/26/2018
7.6
<0.5
7250
<0.1
5.7
1.64
58.8
<0.2
<0.5
1.9 SS
<0.02
<5
<0.5
5.87
<0.1
<0.3
<10
<100
<0.5
0.25
6.2
<0.1
<50
<0.08
<0.5
7.1
GWA-28BRU
Deep
04/26/2018
5.4
0.51 Sl
8650
0.13
4.3
1.58
52.6
<0.2
0.12 j
1
0.023
2.67 j
<0.5
5.58
<0.1
0.14 j,51
7.3 j
<100
0.13 j
0.24 Sl
6.3
<0.1
<50
<0.08
<0.5
5.8
GWA-28BRU
Deep
07/30/2018
6.4
1.4 Sl
6590 RO
0.072 j
14.3
1.72
45.9 Sl
<0.2
5.3 Sl
2.3
0.02
8.95
<0.5
6.98
<0.1
0.081 j,S1
5.6 j
<100
0.11 j
0.22 Sl
6.1
<0.1
<50
<0.08
<0.5
5.6
GWA-28BRU
Deep
1O/29/2018
5.1
0.28 j
6390
<0.1
14.1
1.8
43.4
<0.2
1.3
0.87
<0.02
9.4
<0.5
7.1
<0.1
<0.3
4.9 j
<100
<0.5
0.17
6
<0.1
<50
<0.08
<0.5
4.3
GWA-28S
Shallow
05/O1/2018
2.5
2.7 S1
300
0.56 SI
1.9
1.04
35.8
<0.2
<0.5
5.9
1.1
<5
<0.5
2.66 j
0.065 j
0.14 j,S1
11.2
104
<0.5
0.72
29.8
0.072 j
<50
<0.08
1.6
2.3
GWA-28S
Shallow
07/30/2018
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
GWA-28S
Shallow
10/29/2018
2.2
2.9
126
0.3
1.7 j
1
35.4
<0.2
2.8
3.8
1.1
<5
<0.5
2.4 j
0.065 j
0.32
9.9 j
114
<0.5
0.13
26.9
0.065 j
<50
<0.08
0.32 j,S1
2
GWA-29BRA
Bedrock
O1/29/2018
<0.1
1.3 Sl
412
<0.1 B
0.56
2.09
39.9
<0.2
25.5
1.9
<0.02
<5
<0.5
12.5
<0.1
<0.3
<10
<100
<0.5
1.7
21.4
<0.1
<50
<0.08
<0.5
<0.1
GWA-29BRA
Bedrock
05/02/2018
<0.1
0.67
<50
<0.1
0.45 j,S1
1.97
5.6
<0.2
21
1.1 S1
0.018 j
3.85 j
<0.5
11.9
<0.1
2.3
<10
<100
0.14 j
1.5
18.7
<0.1
<50
<0.08
0.31 j
0.031 j
GWA-29BRA
Bedrock
08/03/2018
<0.1
0.68
124
0.055 j
0.32 j
2.07
9.6
<0.2
16.1
1.4 B
0.024
4.02 j
<0.5
12.4
<0.1
3.2
<10
<100
0.12 j
1.2
18.1
<0.1
<50
<0.08
0.32 j
<0.1
GWA-29BRA
Bedrock
10/29/2018
0.33
0.62
82
<0.1
0.29 j
1.9
133
<0.2
13.5
2.8
<0.02
3.2 j
<0.5
10.7
<0.1
1.9
3.3 j
<100
1.1
2.1
23.2
<0.1
<50
<0.08
0.35 j,S1
0.32
GWA-29D
Deep
O1/29/2018
0.47
0.96 Sl
261
0.16 B,S1
0.78
3.93
9.6
<0.2
<0.5
5.8
0.14 S3
<5
<0.5
<5
<0.1
<0.3
<10
<100
<0.5
<0.1
29.1
<0.1
<50
<0.08
16.4
1.2
GWA-29D
Deep
05/02/2018
0.21
0.41 j
95
0.15
0.72 SI
3.77
5.6
<0.2
<0.5
0.81 S1
0.13
<5
0.24 j
5.12
0.058 j
0.18 j,B,SI
3.9 j
<100
<0.5
0.058 j
25.2
<0.1
<50
<0.08
0.15 j
0.19
GWA-29D
Deep
08/03/2018
0.29
1.3
277
0.3
3.6
4.05
10.7
<0.2
<0.5
1.1 B
0.11
<5
0.18 j
5.48
0.056 j
<0.3
6.9 j,B
<100
<0.5
<0.1
23.7
<0.1
<50
<0.08
2.1
0.23
GWA-29D
Deep
10/29/2018
0.5
0.69
65
0.12
1.3 j
3.5
13.7
<0.2
<0.5
5.1
0.14
<5
<0.5
5.1
0.058 j
0.08 j
6.2 j
<100
<0.5
<0.1
26.9
0.015 j
<50
<0.08
1 S1
0.45
GWA-30BR
Bedrock
O1/31/2018
<0.1
<0.5
8730
<0.1
5.4
2.06
103
<0.2
<0.5
1.1 S3
0.028
<5
<0.5
<5
<0.1
0.33
<10
<100
<0.5
0.42
10.1
<0.1
<50
<0.08
<0.5
<0.1
GWA-30BR
Bedrock
05/03/2018
0.06 j,S1
0.16 j,S1
6850
0.055 j
3.5
1.84
63.4
<0.2
0.14 j
0.32 j
0.018 j
2.64 j
<0.5
4.42 j
<0.1
0.078 j,S1
<10
184
<0.5
0.14
8
0.039 j
<50
<0.08
0.58 Sl
0.053 j
GWA-30BR
Bedrock
07/31/2018
0.051 j
0.5
7200
0.074 j
2.8
1.7
59.9
<0.2
1.4
0.91
0.024
<5
<0.5
4.41 j
<0.1
0.096 j
3 j
<100
<0.5
0.19 S1
6.3
<0.1
<50
<0.08
2.4 B
0.088 j
GWA-30BR
Bedrock
10/22/2018
0.06 j
0.78 Sl
6220
<0.1
2.8
1.7
57.4
<0.2
1.1
0.88
0.023
<5
<0.5
3.9 j
<0.1
0.24 j
3.5 j,B
<100
<0.5
0.073 j,B,SI
6
0.049 j
<50
<0.08
0.14 j
0.041 j
GWA-30S
Shallow
O1/31/2018
1.2
<0.5
66.1
<0.1
<0.5
1.54
84.3
<0.2
<0.5
1.5
0.046
<5
<0.5
<5
<0.1
<0.3
<10
<100
<0.5
<0.1
18.7
<0.1
<50
<0.08
1.6
1.4
GWA-30S
Shallow
05/03/2018
5
0.58 S1
368
0.032 j
2.6
0.987
202
<0.2
<0.5
6.3
0.041
<5
<0.5
2.56 j
0.28
<0.3
2.6 j
<100
<0.5
0.056 j
21.8
0.1
<50
<0.08
1.1 S1
5.1
GWA-30S
Shallow
07/31/2018
5.4
0.68
256
0.084 j
0.99
1.42
251
<0.2
0.074 j
7.9
<0.02
<5
<0.5
2.66 j
0.12
<0.3
<10
<100
<0.5
0.13 S3
19.2
<0.1
<50
<0.08
4.3
6.8
GWA-30S
Shallow
1O/22/2018
3.3
0.66 SI
198
<0.1
0.48 j,S1
1.6
194
<0.2
<0.5
2.9
<0.02
<5
<0.5
2.5 j
0.082 j
0.08 j
4 j,B
<100
<0.5
0.12 B,S1
15.8
0.028 j
<50
<0.08
0.62
3.6
GWA-31BRA
Bedrock
01/31/2018
0.15
<0.5
454
0.23 Sl
44.2
1.37
61.4
<0.2
9.4
5.4
<0.02
11.8
<0.5
90.4
<0.1
0.55
<10
<100
<0.5
1.7
13.3
<0.1
<50
<0.08
1.5
<0.1
GWA-31BRA
Bedrock
05/03/2018
0.13 S1
0.12 j,S1
548
0.24
39.8
1.37
55.8
<0.2
8.6
2.9
<0.02
11.2
<0.5
89.4
<0.1
0.63
<10
<100
0.38 j
2.2
9.5
<0.1
25.6 j
<0.08
0.23 j,S1
0.02 j
GWA-31BRA
Bedrock
08/06/2018
0.082 j
0.34 j
123
0.12
37.6
1.02
38.6
<0.2
28.5
2.1
<0.02
9.83
<0.5
69.2
<0.1
0.78
6.2 j,B
<100
0.17 j
2.3
7.9
<0.1
25.6 j
<0.08
0.35 j
0.035 j
GWA-31BRA
Bedrock
1O/31/2018
0.043 j,S1
0.59
119
<0.1
33.9
0.95
54.2
<0.2
14.2
0.47 j
0.012 j,B,Sl
9.8
<0.5
61.5
<0.1
0.26 j
2.6 j
<100
<0.5
1.8
6.1
0.011 j
34.4 j
<0.08
0.16 j,S1
0.041 j,S1
GWA-31D
Deep
01/31/2018
0.15
1.4 S1
72.4
<0.1
3.5
29.4
7.5
<0.2
1.7
36.3
3.7 M1,R1
29.1
0.68
26.4
<0.1
<0.3
<10
<100
<0.5
0.28
42.6
<0.1
<50
<0.08
<0.5
0.14
GWA-31D
Deep
05/03/2018
0.18 SI
1.2
133
<0.1
5.6
31.1
5.5
<0.2
1.3
28.8
24.8
22.9
0.35 j
23
<0.1
0.34S1
<10
<100
<0.5
0.33
54.4
<0.1
38.8 j
<0.08
0.61 Sl
0.24
GWA-31D
Deep
08/06/2018
0.18
2
126
0.087 j
4.6
29.4
5.8
<0.2
1.1
48.6
9.5
25.6
0.65
24
0.031 j
0.43
6.1 j,B
<100
<0.5
0.44
60.6
<0.1
57
0.047 j
0.29 j
0.22
GWA-31D
Deep
10/31/2018
0.27
1.7
67.2
<0.1
1 7.9
30.8
8.5
<0.2
1.5
38
1 17.4
25
<0.5
23.3
0.019 j
0.48
6.2 j
<100
<0.5
0.24
44.9
<0.1
62.1
<0.08
14.7
0.4
Page 26 of 45

TABLE 3-3
2018 COMPREHENSIVE GROUNDWATER QUALITY DATA
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS LLC, MOORESBORO NC
Analytical Parameters
INORGANIC PARAMETERS (DISSOLVED CONCENTRATION WITH FILTER SIZE)
RADIONUCLIDES
OTHER PARAMETERS
Copper
Iron
Lead
Lithium
Manganese
Mercury
Molybdenum
Nickel
Phosphorus
Selenium
Strontium
Thallium
Vanadium
Zinc
Radium-226
Radium-228
Total
Radium
Uranium-238
Total Uranium
Uranium-238
(Dissolved)
Carbonate
Alkalinity
Fluoride
Phosphorus
Reporting Units
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
mg/L
ug/L
ug/L
ug/L
ug/L
ug/L
pCi/L
pCi/L
pCi/L
ug/mL
ug/mL
ug/mL
mg/L
mg/L
mg/L
15A NCAC 02L Standard
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
5^
NE
0.03^
NE
NE
2
NE
Background Threshold Values (Shallow Flow Zone)
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
2.58
NE
0.0005
NE
5
NE
NE
Background Threshold Values (Deep Flow Zone)
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
1.51
NE
0.0005
NE
5
NE
NE
Background Threshold Values (Bedrock Flow Zone)
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
3.1
NE
0.0005
NE
5
NE
NE
Sample ID
Sample Location
Aquifer Name
Sample
Collection Date
Analytical Results
GWA-24S
Shallow
08/06/2018
0.73
<50
<0.1
NA
24
<0.2
<0.5
2.4
<0.05
<0.5
9.7
0.06 j
<0.3
3.1 j
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-24S
Shallow
10/30/2018
2.8
<50
<0.1
NA
29.4
<0.2
<0.5
3.5
<0.05
<0.5
14.2
0.06 j
<0.3
11.8 S1
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-25S
Shallow
02/01/2018
NA
<50
NA
NA
23.3
<0.2
NA
NA
<0.05
NA
18.1
NA
NA
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-25S
Shallow
05/04/2018
0.94
<50
<0.1
NA
26.7
<0.2
<0.5
1.4
<0.05
<0.5
19
0.046 j
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-25S
Shallow
08/07/2018
1.4
<50
0.049 j
NA
22
<0.2
<0.5
1.1
<0.05
<0.5
20.5
0.048 j
<0.3
5.2 j
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-25S
Shallow
11/02/2018
1 SI
<50
<0.1
NA
21
<0.2
<0.5
1.2 S1
<0.05
<0.5
20.3
0.026 j
<0.3
5.7 j
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-26S
Shallow
01/29/2018
1.5
<50
0.13
NA
14.2
<0.2
<0.5
1.5 S1
<0.05
<0.5
<5
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-26S
Shallow
05/07/2018
0.76 B
<50
0.097 j
NA
12.6
<0.2
<0.5
0.62
<0.05
<0.5
3.1 j
0.033 j
0.52 B
3.5 j,B
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-26S
Shallow
08/07/2018
0.85
<50
0.22
NA
14.4
<0.2
<0.5
0.63
<0.05
<0.5
3.9 j
0.041 j
<0.3
4.1 j
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-26S
Shallow
11/01/2018
3.3
<50
0.11
NA
14.1
<0.2
<0.5
0.77
<0.05
<0.5
4.1 j
0.023 j
<0.3
8.7 j
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-27BR
Bedrock
01/26/2018
<0.5
307
<0.1
NA
36.5
<0.2
1.7
3.5
<0.05
<0.5
166
<0.1
<0.3
<10
0.515
1.27 B
1.785
0.0026
0.0026
NA
<5
<0.1
<0.05 MS
GWA-27BR
Bedrock
05/02/2018
1.7
192
<0.1
NA
21.9
<0.2
1.4
2.1
<0.05
0.63
152
<0.1
0.22 j,B
<10
0 U
0.669 U
0.669 U
0.002
0.002
0.0028
<5
<0.1
<0.05
GWA-27BR
Bedrock
08/03/2018
0.59
83.4
<0.1
NA
12.1
<0.2
3.7
6.1
<0.05
0.52
153
<0.1
<0.3
3.7 j
0.417 U
1.47
1.89
0.0015
0.0015
0.0015
<5
<0.1
<0.05
GWA-27BR
Bedrock
10/22/2018
0.17 j,S1
66.6
<0.1
NA
12
<0.2
2.1
3
<0.05
0.63
153
<0.1
<0.3
3.1 j
0.524
0.151 U
0.675 U
NA
0.0014
NA
<5
<0.1
<0.05
GWA-27DA
Deep
01/26/2018
0.74 SI
<50
<0.1
NA
1130
<0.2
<0.5
<0.5
<0.05
3
98.6
0.16
<0.3
<10
0.0613
0.507
0.5683
<0.0005
<0.0005
NA
<5
<0.1
<0.05
GWA-27DA
Deep
05/01/2018
3.6 S1
73.7
<0.1
NA
1150
<0.2
0.085 j
2.5
<0.05
2.8
96.7
0.16
<0.3
5.7 j
0.254 U
0.186 U
0.44 U
<0.0005
<0.0005
<0.0005
<5
<0.1
<0.05
GWA-27DA
Deep
08/03/2018
0.84
<50
<0.1
NA
1300
<0.2
0.36 j
0.56
<0.05
2.4
103
0.15
<0.3
4.9 j
0. 196 U
0.387 U
0.583 U
<0.0005
<0.0005
<0.0005
<5
<0.1
<0.05
GWA-27DA
Deep
10/22/2018
1.6
<50
<0.1
NA
1260
<0.2
0.44 j
0.97
<0.05
2.3
101
0.15
<0.3
5.9 j
0.0714 U
0.378 U
0.449 U
NA
<0.0005
NA
<5
<0.1
<0.05
GWA-28BR
Bedrock
01/26/2018
<0.5
5130
<0.1
NA
80
<0.2
<0.5
0.83 S1
<0.05
<0.5
82.2
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-28BR
Bedrock
04/26/2018
0.17 j,S1
5250
<0.1
NA
79.4
<0.2
<0.5
0.68 S1
<0.05
<0.5
76.2
<0.1
0.09 j,S1
2.6 j
NA
NA
NA
NA
NA
NA
<5
0.092 j
0.047 j
GWA-28BR
Bedrock
08/07/2018
0.15 j
5100
<0.1
NA
56.9
<0.2
2.7
2.5
0.041 j
<0.5
45.9
<0.1
<0.3
5.5 j
NA
NA
NA
NA
NA
NA
<5
0.067 j
0.047 j
GWA-28BR
Bedrock
10/29/2018
0.36 j,S1
4950
<0.1
NA
81.8
<0.2
2.7
0.82
0.051
<0.5
76.1
<0.1
<0.3
6.9 j
NA
NA
NA
NA
NA
NA
<5
0.092 j
0.055
GWA-28BRU
Deep
01/26/2018
<0.5
5900
<0.1
NA
48.8
<0.2
<0.5
1.4 S1
0.085
<0.5
42.9
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
0.073
GWA-28BRU
Deep
04/26/2018
<0.5
6670
<0.1
NA
47
<0.2
0.096j
0.81 Sl
0.076
<0.5
40.6
<0.1
0.15j,S1
3.7j
NA
NA
NA
NA
NA
NA
<5
0.065j
0.11
GWA-28BRU
Deep
07/30/2018
0.35 j,S1
5600
<0.1
NA
37.4
<0.2
5.2 S1
2
0.076
<0.5
43.9
<0.1
<0.3
3.8 j
NA
NA
NA
NA
NA
NA
<5
0.064 j
0.088
GWA-28BRU
Deep
10/29/2018
0.14 j
5950
<0.1
NA
39.7
<0.2
1.1
0.94
0.08
<0.5
44.5
<0.1
<0.3
5.2 j
NA
NA
NA
NA
NA
NA
<5
0.066 j
0.084
GWA-28S
Shallow
05/01/2018
3.7 S1
64.5
0.46
NA
32.6
<0.2
<0.5
5.7
<0.05
<0.5
4.7 j
0.061 j
<0.3
11.2
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-28S
Shallow
07/30/2018
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
GWA-28S
Shallow
10/29/2018
3.1
<50
0.26
NA
31.6
<0.2
1.8
3
<0.05
<0.5
4.4 j
0.055 j
0.13 j
10.3
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-29BRA
Bedrock
01/29/2018
<0.5
82.6
<0.1
NA
30.7
<0.2
26.1
1.7 SI
<0.05
<0.5
258
<0.1
0.33 SI
<10
NA
NA
NA
NA
NA
NA
<5
0.24
<0.05
GWA-29BRA
Bedrock
05/02/2018
2.9
<50
<0.1
NA
<5
<0.2
20.9
1.8
<0.05
<0.5
215
<0.1
2.3
<10
NA
NA
NA
NA
NA
NA
<5
0.24
0.025 j,S1
GWA-29BRA
Bedrock
08/03/2018
0.99
<50
<0.1
NA
<5
<0.2
15.9
1.6
0.03 j
<0.5
191
<0.1
3.2
<10
NA
NA
NA
NA
NA
NA
<5
0.24
0.028 j
GWA-29BRA
Bedrock
10/29/2018
0. 13j
63.6
<0.1
NA
124
<0.2
13
2.7
0.037j
<0.5
178
<0.1
1.6
<10
NA
NA
NA
NA
NA
NA
<5
0.21
0.041j
GWA-29D
Deep
01/29/2018
1
96.7
<0.1
NA
11.8
<0.2
<0.5
23.9
<0.05
<0.5
38.3
<0.1
<0.3
<10
0.271
0.844
1.115
<0.0005
<0.0005
NA
<5
<0.1
<0.05
GWA-29D
Deep
05/02/2018
0.69
<50
0.11
NA
4.2 j
<0.2
<0.5
0.82
<0.05
0.2 j
32.4
0.07 j
0.11 j,B
2.7 j
0.325
0.361 U
0.686 U
<0.0005
<0.0005
<0.0005
<5
<0.1
<0.05
GWA-29D
Deep
08/03/2018
0.5 j
<50
0.043 j
NA
5.1
<0.2
<0.5
2.8
<0.05
0.18 j
30.6
0.043 j
<0.3
3.2 j
0.287 U
2.78
3.07
<0.0005
<0.0005
<0.0005
<5
<0.1
<0.05
GWA-29D
Deep
10/29/2018
0.89
<50
<0.1
NA
7.5
<0.2
<0.5
3
<0.05
<0.5
32.3
0.057 j
<0.3
6.3 j
0.16 U
0.439 U
0.599 U
NA
<0.0005
NA
<5
<0.1
<0.05
GWA-30BR
Bedrock
01/31/2018
<0.5
7390
<0.1
NA
75.4
<0.2
<0.5
0.57
<0.05
<0.5
56.8
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-30BR
Bedrock
05/03/2018
<0.5
6110
0.037 j
NA
55.5
<0.2
0.14 j
0.6
<0.05
<0.5
43.1
<0.1
0.25 j
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
0.031 j,S1
GWA-30BR
Bedrock
07/31/2018
0.44 j,S1
5840
0.25
NA
51.5
<0.2
0.57
2.9 B
<0.05
<0.5
41.4
<0.1
<0.3
<10 P8
NA
NA
NA
NA
NA
NA
<5
<0.1
0.029 j
GWA-30BR
Bedrock
10/22/2018
1 S1
5620
<0.1
NA
54.8
<0.2
0.54
1.2
0.029 j
<0.5
42.2
<0.1
<0.3
8.7 j
NA
NA
NA
NA
NA
NA
<5
<0.1
0.033 j
GWA-30S
Shallow
01/31/2018
<0.5
<50
<0.1
NA
77.7
<0.2
<0.5
1.4
<0.05
<0.5
24.2
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-30S
Shallow
05/03/2018
0.97
63.5
<0.1
NA
190
<0.2
<0.5
6.8
<0.05
<0.5
16.8
0.27
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1 MI
<0.05
GWA-30S
Shallow
07/31/2018
0.51 S3
187
<0.1
NA
256
<0.2
0.094 j
9.3
<0.05
<0.5
25.2
0.12
<0.3
<10 P8
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-30S
Shallow
10/22/2018
0.74 S1
130
<0.1
NA
193
<0.2
<0.5
3.5
<0.05
<0.5
24.2
0.076 j
<0.3
3.6 j
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-31BRA
Bedrock
01/31/2018
<0.5
153
<0.1
NA
53.8
<0.2
8.8
1.9
<0.05
<0.5
59.7
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
0.1
<0.05
GWA-31BRA
Bedrock
05/03/2018
<0.5
70.8
<0.1
NA
46.9
<0.2
8.5
0.43 j
<0.05
<0.5
50.9
<0.1
0.22 j
<10
NA
NA
NA
NA
NA
NA
<5
0.11
<0.05
GWA-31BRA
Bedrock
08/06/2018
0.13 j
26.2 j
<0.1
NA
33.4
<0.2
20.7
0.52
<0.05
<0.5
38.4
<0.1
0.42
<10
NA
NA
NA
NA
NA
NA
<5
0.13
<0.05
GWA-31BRA
Bedrock
10/31/2018
0.71 SI
55.2
<0.1
NA
45.4
<0.2
12.3
1.2
<0.05
<0.5
40.4
<0.1
0.26 j
<10
NA
NA
NA
NA
NA
NA
<5
0.11
<0.05
GWA-31D
Deep
01/31/2018
0.97 S3
<50
<0.1
NA
<5
<0.2
1.9
15.8
<0.05
0.8
343
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-31D
Deep
05/03/2018
1.4
<50
<0.1
NA
3.6 j
<0.2
1.2
35.7
<0.05
0.41 j
442
<0.1
0.34
2.6 j
NA
NA
NA
NA
NA
NA
<5
0.092 j
<0.05
GWA-31D
Deep
08/06/2018
2.4
<50
0.042 j
NA
3.5 j
<0.2
1.4
46.1
0.03 j
0.64
434
<0.1
0.34
5.5 j
NA
NA
NA
NA
NA
NA
<5
0.095 j
0.057
GWA-31D
Deep
10/31/2018
2 S1
<50
<0.1
NA
<5
<0.2
1.8
35.1
<0.05
0.56
346
<0.1
0.24j
4.3j
NA
NA
NA
NA
NA
NA
<5
0.09j
0.032j
Page 27 of 45

TABLE 3-3
2018 COMPREHENSIVE GROUNDWATER QUALITY DATA
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS LLC, MOORESBORO NC
Analytical Parameters
FIELD PARAMETERS
WATER QUALITY PARAMETERS
SELECTED 40CFR257 APPENDIX III CONSTITUENTS plus Sr
INORGANIC PARAMETERS (TOTAL CONCENTRATION)
pH
Water
Level
Temp
Spec
Cond
DO
ORP
Eh
Turbidity
Alkalinity
Bi-
carbonate
Alkalinity
Sulfide
Total
Organic
Carbon
Total
Suspended
Solids
Boron
Calcium
Chloride
Strontium
Sulfate
Total
Dissolved
Solids
Aluminum
Antimony
Arsenic
Barium
Beryllium
Cadmium
Chromium
(VI)
Chromium
Reporting Units
S.U.
ft
Deg C
umhos/cm
mg/L
mV
mV
NTUs
mg/L
mg/L
mg/L
mg/L
mg/L
ug/L
mg/L
mg/L
ug/L
mg/L
mg/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
15A NCAC 02L Standard
6.5-8.5
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
700
NE
250
NE
250
Soo
NE
1*
10
700
4*
2
10
10
Background Threshold Values (Shallow Flow Zone)
4.4-6.1
NE
NE
NE
NE
NE
NE
NE
13.67
14.42
0.1
1
NE
50
3.221
7.7
36.71
1.169
75.47
253
1
0.5
73.03
0.188
1
0.452
3.968
Background Threshold Values (Deep Flow Zone)
4.8-6.1
NE
NE
NE
NE
NE
NE
NE
19.74
18.13
0.1
1
NE
50
11
5.1
56.14
10
70.98
290
1
0.763
23
0.2
1
0.16
1.791
Background Threshold Values (Bedrock Flow Zone)
5.4-7.4
NE
NE
NE
NE
I NE
I NE
I NE
53
68.82
0.1
1
NE
50
16
8.656
107.1.
15.1
1.20
208.2
1
1
19.33
1
1
0.12
3.567
Sample ID
Sample Location
Aquifer Name
Sample
Collection Date
Analytical Results
GWA-32D
Deep
01/30/2018
6.3
33.14
14
48
7.10
76
281
8.0
15.5
15.5
<0.1
<1
4.3 S1
<50
5.17
1.4
14.9
<1
28
287
<0.5
0.13 SI
14.4
0.1
<0.08
0.13 SI
<0.5
GWA-32D
Deep
04/30/2018
5.4
26.30
20
31
6.65
136
341
7.6
3.6 j
3.6 j
<0.1
<1
8.5
<50
2.26
1.3
12.2
4.5
<25
482
<0.5
0.15 SI
8.4
0.1
0.037 j
0.071 S1
0.25 j,S1
GWA-32D
Deep
08/02/2018
6.8
31.93
20
26
7.40
115
320
5.1
6.3
6.3
<0.1
<1
<5
<50
2.18
1.4
7.5
0.65 j
29
283 SI
<0.5
0.094 j
8.7
0.1
<0.08
0.1 M1
0.53
GWA-32D
Deep
10/29/2018
5.6
29.15
18
31
6.60
177
382
4.3
6.5
6.5
<0.1
<1
<2.5
<50
2.8
1.2
10.6
2.6
<25
104
<0.5
0.051 j
9.2
0.14
<0.08
0.086
0.17 j
GWA-33BR
Bedrock
01/29/2018
8.2
26.12
15
387
0.20
-152
54
2.2
121
121
<0.1
<1
<2.5
136
54.9 M1
12
189
67.1
255
<100
<0.5
<0.1
17.6
<0.1
<0.08
<0.025
<0.5
GWA-33BR
Bedrock
05/03/2018
8.0
24.28
22
401
0.50
-165
41
2.4
127
127
<0.1
<1
<2.6
141
54.1
12.9
205
72.9
266
<100
<0.5
<0.1
16.3
<0.1
<0.08
<0.025
0.21 j,S1
GWA-33BR
Bedrock
08/01/2018
8.7
24.64
20
409
0.40
38
243
3.4
122
122
<0.1
<1
2.9
157
53.5
13.3
201
78.7
285
<100
<0.5
<0.1
19.1
<0.1
<0.08
<0.025
0.17 j
GWA-33BR
Bedrock
10/23/2018
8.5
24.48
16
425
0.40
-267
-62
3.1
120
120
<0.1
<1
4.4
167
53.5
12.7
197
77.8
289
<100
<0.5
<0.1
20.2
<0.1
<0.08
<0.025
0.38 j,S1,B
GWA-33D
Deep
01/29/2018
6.2
6.64
13
394
0.70
55
260
2.3
69.3
69.3
<0.1
<1
<2.5
<50
44.8
4.8
170
113
273
<100
<0.5
0.22 SI
77
<0.1
<0.08
0.094 SI
0.75 S1
GWA-33D
Deep
05/03/2018
6.1
4.63
22
406
0.60
-81
124
3.5
80.6
80.6
<0.1
0.99j
<2.6
<50
48.1
5.7
181
120
288
<100
<0.5
0.31
72.8
<0.1
<0.08
<0.025
0.47 j,S1
GWA-33D
Deep
08/01/2018
5.9
6.41
21
392
0.80
46
251
2.6
84
84
<0.1
0.94j
<2.5
<50
45.2
6.2
176
106
293
<100
<0.5
0.17
67.2
<0.1
<0.08
0.05 S1
0.2 j,S1
GWA-33D
Deep
10/23/2018
6.1
5.18
17
367
0.40
-6
199
3.9
76.2
76.2
<0.1
1.2
<2.6
<50
38.8
6.1
155
98.9
265
<100
<0.5
0.13
61.9
<0.1
<0.08
<0.025
0.35 j,B,SI
GWA-33S
Shallow
01/29/2018
5.2
5.53
12
278
0.20
119
324
9.6
<5
<5
<0.1
1.3
3.9
<50
26.2
2.6
167
113
199
<100
<0.5
0.1 SI
35.4
0.76
0.19
<0.025
<0.5
GWA-33S
Shallow
05/03/2018
4.9
3.72
19
233
0.50
-83
122
4.1
<5
<5
<0.1
1.2
<2.6
<50
19.8
1.9
140
98.7
180
76.4 j
<0.5
0.2
29.9
0.82
0.085
<0.025
0.48 j,S1
GWA-33S
Shallow
08/01/2018
5.0
5.45
21
234
0.20
89
294
9.1
<5
<5
<0.1
1.2
5.4
44.7 j
20.9
3.3
140
92.9
183
277
<0.5
0.21
38.1
0.72
0.13
0.052 SI
0.43 j
GWA-33S
Shallow
10/23/2018
4.4
4.20
18
229
0.80
261
466
4.5
<5
<5
<0.1
1.3
6.5 SI
41.2 j
18.3
2.6
134
84.9
177
99.2 j
<0.5
0.21
40.2
1.1
0.17
<0.025
0.81 B,S3
GWA-34S
Shallow
02/01/2018
5.8
12.55
14
45
4.70
-37
168
1.6
9.6
9.6
<0.1
<1
<2.5
<50
3.3
2.6
14.5
1.1
38
229
NA
NA
10.7
NA
NA
<0.025
NA
GWA-34S
Shallow
04/30/2018
5.3
3.77
16
32
6.20
232
437
8.6
4.6 j
4.6 j
<0.1
<1
2.5
<50
2.01
2.9
12.8
1.4
<25
128
<0.5
0.069 j,S1
8.1
0.06 j
<0.08
0.035 S1
0.2 j,S1
GWA-34S
Shallow
08/06/2018
5.5
7.81
19
34
7.60
-89
117
9.8
7.8
7.8
<0.1
<1
22.7
<50
2.33
3
15.9
1.3
52
787
<0.5
0.1
13.3
0.17
<0.08
0.028
0.38 j
GWA-34S
Shallow
10/30/2018
5.5
7.35
14
33
6.30
154
359
0.1
8.6
8.6
<0.1
<1
<5
<50
2.4
2.8
14.6
1.4
33
<100
<0.5
0.04 j
10.2
0.057 j
<0.08
0.12 S1
0.3 j
GWA-35D
Deep
02/01/2018
6.8
29.02
16
330
0.10
-54
151
1.1
79.9
79.9
<0.1
<1
<2.5
130
42.2
3
125
65.4
224
<100
NA
NA
11
NA
NA
<0.025
NA
GWA-35D
Deep
05/01/2018
5.6
26.81
20
27
0.30
-4
201
3.2
66.8
66.8
<0.1
<1
<2.5
138
29.4
3.3
108
60.5
191
<100
<0.5
0.19
12.1
0.089 j
<0.08
<0.025
0.36 j
GWA-35D
Deep
08/06/2018
6.5
28.03
26
305
1.20
-83
122
5.5
66.8
66.8
<0.1
<1
<5.3
133
37.6
3.6
113
68.2
199
<100
<0.5
0.16
9.6
0.065 j
<0.08
<0.025
0.57
GWA-35D
Deep
11/01/2018
6.2
27.55
18
276
0.10
-28
178
3.4
72.1
72.1
<0.1
<1
<2.5
133
33.9
3.3 M1
116
65.9 M1
186
<100
<0.5
0.087 j
13.1
0.044 j
<0.08
<0.025
0.22 j,B,BC,SI
GWA-35S
Shallow
02/01/2018
5.7
29.18
17
194
0.50
21
226
9.7
33.8
33.8
<0.1
<1
3.5
106
13.9
3.4
54.4
51
124
<100
NA
NA
36.6
NA
NA
NA
NA
GWA-35S
Shallow
02/02/2018
5.6
29.24
14
191
0.60
81
286
6.4
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
<0.025
NA
GWA-35S
Shallow
05/01/2018
5.8
26.73
23
229
0.30
10
215
2.7
43.6
43.6
<0.1
0.51 j
<2.5
115
15.6
3.3
50.7
48.9
139
<100
<0.5
0.63
34.3
<0.1
<0.08
<0.025
<0.5
GWA-35S
Shallow
08/06/2018
5.8
27.38
25
229
0.70
-161
44
6.4
55.2
55.2
<0.1
<1
<2.6
113
14.6
3.6
51.9
47.1
136
<100
<0.5
0.66
34.3
0.045 j
<0.08
<0.025
<0.5
GWA-35S
Shallow
11/01/2018
5.9
26.73
19
203
1.20
-14
191
1.7
63.7
63.7
<0.1
0.52 j
<2.6
113
13.3
3.4
47.2
37
126
<100
<0.5
0.74
32.8
0.029 j
<0.08
<0.025
0.22 j,B,BC,SI
GWA-36D
Deep
01/29/2018
5.7
8.80
16
703
0.50
37
242
0.9
36.9
36.9
<0.1
<1
<2.5
179
93.8
6
322
318
542
<100
<0.5
1.1
31.6
<0.1
<0.08
<0.025 M1
<0.5
GWA-36D
Deep
04/27/2018
5.8
7.95
21
737
0.70
11
216
4.6
32.2
32.2
<0.1
<1
<2.5
177
92.4
6
346
293
560
288
<0.5
0.61 SI
32
<0.1
0.039j
<0.025
IA SI
GWA-36D
Deep
08/02/2018
5.5
8.45
28
710
0.30
-3
202
7.5
33.4
33.4
<0.1
<1
<2.6
162
83
6.4
301
323
561
161 S1
<0.5
0.24
26.2
0.072j
0.041j
<0.025
0.28j
GWA-36D
Deep
10/31/2018
5.7
8.22
16
698
0.40
48
253
1.9
29.6
29.6
<0.1
<1
12.7
183
90.9
6.1
316
299
553
77.3j
<0.5
0.3
26
0.076j
0.12
<0.025
0.3 j,S1
GWA-36S
Shallow
01/29/2018
4.8
10.48
15
316
5.40
196
401
9.4
<5
<5
<0.1
<1
<2.5
54.3
27.3
3
218
136
223
2790
<0.5
1.9
24.3
1.3
0.15
<0.025
0.58 S1
GWA-36S
Shallow
04/27/2018
5.4
9.63
21
245
3.50
109
314
9.3
2.1j
2.1j
<0.1
0.67j
8.9
55.1
21.2
1.6
188
96.2
157
2540
<0.5
2.3
36.2
1.2
0.24
<0.025
0.29 j,S1
GWA-36S
Shallow
08/02/2018
4.7
9.88
24
223
4.50
-118
87
4.5
<5
<5
<0.1
0.56 j
<2.6
79.9
18.2
2.5
185
92.7
148
2010
<0.5
0.68
30.9
1.4
0.15
<0.025
0.32 j
GWA-36S
Shallow
10/31/2018
4.6
9.96
19
379
2.70
299
504
7.6
<5
<5
<0.1
0.98j
5.5
145
32.9
4.8
397
155
280
3080
<0.5
2
50.9
2.5
0.49
<0.025
1 SI
GWA-37D
Deep
01/29/2018
3.0
38.03
14
689
0.20
208
413
9.9
47.7
47.7
0.18
<1
6
61.7
94.6
3.8
596
292
536
590
<0.5
0.25 S1
50
<0.1
<0.08
0.14 S1
23.5
GWA-37D
Deep
05/03/2018
5.8
37.72
35
695
0.20
-176
30
9.7
46.7
46.7
0.11
<1
9.7
56.3
96.4
4.1
594
308
540
1110
0.19j
0.25
52.7
0.056j
<0.08
0.11 M1
11.1
GWA-37D
Deep
07/31/2018
5.7
38.00
35
702
0.00
119
324
9.8
43.9
43.9
<0.1
<1
5.8
62
92.2
4
578
267
559
702
<0.5
0.15 S1
49.6
<0.1
0.032j
2.1
5.3
GWA-37D
Deep
11/02/2018
5.8
41.40
18
688
0.10
157
362
7.0
46.5
46.5
<0.1
<1
7.7
66.8
93.2
4.1
596
285
537
364
0.25 j
0.19
48.9
0.073 j
<0.08
1.8
9.7
GWA-37S
Shallow
01/29/2018
5.7
42.06
16
310
0.10
52
257
9.8
37.5 M1
37.5
<0.1
<1
5.4
91.2
17.2
17.2
73.5
82.4
188
302
<0.5
1.1
51.6
0.15
<0.08
<0.025
1.9 S1
GWA-37S
Shallow
05/03/2018
5.7
41.74
29
313
0.12
-4
201
9.7
33.2 M1
33.2
<0.1
0.81 j
6.3
78
17
18.5
75.9
79.8
169
180
<0.5
1.1
56.8
0.15
<0.08
<0.025
3.4
GWA-37S
Shallow
07/31/2018
5.7
41.98
24
302
0.40
-36
169
7.9
36.4
36.4
<0.1
0.55 j
9.2
94.2
18
18.3 M1
79
73.7 M1
205
344 S3
<0.5
0.6 S1
52.6
0.13
0.062 j
<0.025
0.34 j,S1
GWA-37S
Shallow
10/22/2018
6.0
42.03
19
278
0.10
-44
161
5.3
41
41
<0.1
0.88 j
3.4 S1
66.6
13.1
19.5
71.5
55.2
172
<100
<0.5
1.1
54.5
0.1
0.079 j
<0.025
0.38 j,S1
GWA-43D
Deep
01/29/2018
6.4
19.44
15
337
0.60
170
375
2.1
97.4
97.4
<0.1
<1
<2.5
<50
39.2
3.2
166
70.9
217
<100
<0.5
0.17 SI
126
<0.1
<0.08
0.18 S1
1.3 S1
GWA-43D
Deep
04/26/2018
6.3
17.32
20
351
0.90
102
307
2.8
96.6
96.6
<0.1
0.59j
<2.6
29.5j
40.3
3.2
160
77.6
266
<100
<0.5
0.15 S1
123
<0.1
<0.08
0.069
0.26 j,S1
GWA-43D
Deep
08/01/2018
6.2
18.29
23
345
1.70
87
292
0.3
95
95
<0.1
<1
<2.5
29.6j
40.2
3.8
163
81 M1
261
<100
<0.5
0.13
132
<0.1
<0.08
IA S1
1.2 B
GWA-43D
Deep
10/23/2018
6.2
17.42
17
352
0.70
63
268
0.8
91.1
91.1
<0.1
0.54 j
<2.5
29.7 j
39.6
3.5
164
82.8
254
<100
<0.5
0.13
121
0.016 j
<0.08
0.1
0.48 j,B,SI
GWA-43S
Shallow
01/29/2018
5.6
9.02
14
138
4.30
169
374
5.0
<5
<5
<0.1
<1
2.8
78
13.9
1.6
178
44.9
85 D6
285
<0.5
0.15 S1
106
0.18
<0.08
0.44 MI
1.1 S1
GWA-43S
Shallow
04/26/2018
4.9
5.80
16
132
1 7.20
1 -40
1 165
4.3
1 1.6j
1 1.6j
I <0.1
1 0.53j
<2.5
67.6
13.5
1.9
166
41.2
95
109
<0.5
0.14 S1
93.9
0.18
0.031j
0.34
0.88 S1
GWA-43S
Shallow
08/01/2018
5.3
9.00
24
131
1 4.00
1 166
1 371
2.4
1 2.9 j
1 2.9 j
I <0.1
I <1
I <2.5
92.7
12.7
1.6
172
46.7
93
122
<0.5
0.1
104
0.21
0.042 j
0.84 S1
0.6
GWA-43S
Shallow
10/23/2018
4.6
7.47
19
129
1 4.10
1 208
14131
2.9
1 <5
1 <5
1 <0.1
1 0.52 j
I <2.5
1 89.2
1 11.2
1 1.6
150
42
86
85.8 j
<0.5
0.14
95.4
0.18
<0.08
0.42
0.9 B,S1
Page 28 of 45

TABLE 3-3
2018 COMPREHENSIVE GROUNDWATER QUALITY DATA
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS LLC, MOORESBORO NC
Analytical Parameters
INORGANIC PARAMETERS (TOTAL CONCENTRATION)
INORGANIC PARAMETERS (DISSOLVED CONCENTRATION WITH FILTER SIZE)
Cobalt
Copper
Iron
Lead
Lithium
Magnesium
Manganese
Mercury
Molybdenum
Nickel
Nitrate
+ Nitrite
Potassium
Selenium
Sodium
Thallium
Vanadium
Zinc
Aluminum
Antimony
Arsenic
Barium
Beryllium
Boron
Cadmium
Chromium
Cobalt
Reporting Units
ug/L
ug/L
ug/L
ug/L
ug/L
mg/L
ug/L
ug/L
ug/L
ug/L
mg-N/L
mg/L
ug/L
mg/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
15A NCAC 02L Standard
1*
1000
300
15
NE
NE
50
1
NE
100
NE
NE
20
NE
0.2*
0.3*
1000
NE
NE
NE
NE
NE
NE
NE
NE
NE
Background Threshold Values (Shallow Flow Zone)
10.65
6.569
765.3
1
NE
2.479
168.8
0.2
1
6.256
8.837
5
1
6.139
0.117
1.059
15
NE
NE
NE
NE
NE
NE
NE
NE
NE
Background Threshold Values (Deep Flow Zone)
9.041
9.453
559.7
1
NE
1.6
78.31
0.2
1
12.56
2.8
5
1
4.41
0.063
1.095
15.03
NE
NE
NE
NE
NE
NE
NE
NE
NE
Background Threshold Values (Bedrock Flow Zone)
1.497
5
6220
1
NE
1 2.328
89.4
0.2
1.716
5
0.92
5
1
1 7.42
0.1
0.37
10
NE
NE
NE
NE
NE
NE
NE
NE
NE
Sample ID
Sample Location
Aquifer Name
Sample
Collection Date
Analytical Results
GWA-32D
Deep
01/30/2018
<0.1
1.1 51
169
0.13
0.94
0.214
7.1
<0.2
<0.5
0.64 S1
0.26
<5
<0.5
<5
<0.1
<0.3
<10
<100
<0.5
<0.1
11.2
<0.1
<50
<0.08
<0.5
<0.1
GWA-32D
Deep
04/30/2018
0.15
1.7 SI
174
0.17 S3
0.35 j
0.692
15.8
<0.2
<0.5
0.34 j
0.18
<5
0.37 j
1.24 j
0.06 j
0.11 j,Sl
<10
108
0.18 j
0.2
7.1
0.22
<50
0.16
0.33 j,B,Sl
0.23
GWA-32D
Deep
08/02/2018
0.069 j
1.3
122
0.095 j
0.5
0.178
6.5
<0.2
<0.5
0.45 j
0.3
<5
<0.5
1.76 j
0.033 j
0.11 j,B
2.9 j
<100
<0.5
0.047 j
6.9
0.12
<50
<0.08
0.8
0.057 j
GWA-32D
Deep
10/29/2018
0.094 j
0.74
32.6 j
<0.1
0.46 j
0.5
8.7
<0.2
<0.5
<0.5
0.25
<5
<0.5
1.3 j
0.03 j
0.09 j
3.2 j
<100
<0.5
<0.1
8.4
0.12
<50
<0.08
0.13 j,S1
0.083 j
GWA-33BR
Bedrock
01/29/2018
<0.1
<0.5
1290
<0.1
19.1
6.4
328
<0.2
<0.5
<0.5
<0.02
9.26
<0.5
10.8
<0.1
<0.3
22
<100
<0.5
<0.1
18.4
<0.1
131
<0.08
<0.5
<0.1
GWA-33BR
Bedrock
05/03/2018
<0.1
0.2 j,S1
791
0.066 j
25.5
6.22
260
<0.2
0.25 j
0.15 j
<0.02
13.9
<0.5
12.7
<0.1
<0.3
<10
<100
<0.5
<0.1
16.4
<0.1
138
<0.08
0.17 j,Sl
<0.1
GWA-33BR
Bedrock
08/01/2018
<0.1
0.43 j
1010
<0.1
34.6
6.16
332
<0.2
0.25 j
0.28 j
<0.02
15.8
<0.5
13.7
<0.1
<0.3
<10 2g
70.4 j
<0.5
<0.1
46.1
<0.1
34.7 j
<0.08
<0.5
<0.1
GWA-33BR
Bedrock
10/23/2018
<0.1
<0.5
1490
<0.1
45.3
6.1
335
<0.2
0.28 j
<0.5
<0.02
19.9
<0.5
15.1
<0.1
<0.3
<10
<100
<0.5
<0.1
18.6
<0.1
157
<0.08
<0.5
0.015 j
GWA-33D
Deep
01/29/2018
0.79 S1
0.86 S1
686
<0.1
25.9
10.4
99.9 sl
<0.2
<0.5
19.7
0.049 SI
9.75
<0.5
11.2
<0.1
0.32
<10
<100
<0.5
0.12
80.2
<0.1
<50
<0.08
<0.5
0.92
GWA-33D
Deep
05/03/2018
0.44
0.69 SI
1680
<0.1
23.5
10.1
120
<0.2
<0.5
12.6
<0.02
10.6
<0.5
13.6
<0.1
0.43 S3
<10
<100
<0.5
0.18
67.5
<0.1
<50
<0.08
<0.5
0.51
GWA-33D
Deep
08/01/2018
0.4
0.67
636 SI
<0.1
24.5
9.71
111
<0.2
<0.5
11.5 51
0.018 j,S1
9.62
<0.5
13.2
<0.1
0.34
5.4 j,B,2g,S1
<100
<0.5
0.074 j
66.6
<0.1
<50
<0.08
<0.5
0.65
GWA-33D
Deep
10/23/2018
0.36
0.62 SI
308
<0.1
22.7
8.6
71.2
<0.2
<0.5
15.2
0.2
8.6
<0.5
11.4
<0.1
0.56
3.4 j
<100
<0.5
0.046 j
64.9
<0.1
<50
<0.08
0.44 j
0.41
GWA-335
Shallow
01/29/2018
18.6
1 Sl
7430
<0.1
7
10.1
646
<0.2
<0.5
20.7
0.021 S1
<5
<0.5
<5
<0.1
0.33
30.4
<100
<0.5
<0.1
33.4
0.77
<50
0.2
<0.5
18.8
GWA-335
Shallow
05/03/2018
13.8
0.67 Sl
7490
0.069 j
4.5
7.99
577
<0.2
<0.5
11.9
0.02 j
<5
<0.5
4 j
0.077 j
0.4 Sl
28.4
60.3 j
<0.5
0.16
27.1
0.68
<50
0.084
0.4 j,S1
14.5
GWA-335
Shallow
08/01/2018
14.2
1.5
9390
0.21
6.9
8.12
514
<0.2
<0.5
14.8
0.018 j
<5
<0.5
3.26 j
0.077 j
0.64
32.9 B,2g
74.2 j
<0.5
0.14
33.1
0.7
36.9 j
0.14
0.4 j,S1
13.9
GWA-335
Shallow
10/23/2018
14.6
2.2 S1
3660
0.14
6.3
7.4
523
<0.2
<0.5
14 SI
0.028
<5
<0.5
3 j
0.092 j
0.39
32.5
84.3 j
<0.5
0.13
36.4
0.93
40.1 j
0.15
0.31 j
13.7
GWA-34S
Shallow
02/01/2018
NA
NA
526
NA
NA
0.737
102
<0.2
NA
NA
0.043
<5
NA
<5
NA
NA
<10
<100
NA
NA
8
NA
<50
NA
NA
NA
GWA-345
Shallow
04/30/2018
0.19
0.26 j,S1
528
0.048 j,S1
0.47 j
0.695
21.8
<0.2
<0.5
0.56
0.1
<5
<0.5
1.95 j
0.029 j
0.1 j,S1
<10
<100
<0.5
<0.1
7.4
0.069 j
<50
<0.08
0.28 j,S1
0.23
GWA-345
Shallow
08/06/2018
0.46
0.49 j
438
0.45
1.2
0.839
32.5
<0.2
<0.5
0.9
0.085
<5
<0.5
2.45 j
0.037 j
0.22 j
3.2 j
214
<0.5
<0.1
10.5
0.095 j
<50
<0.08
0.23 j
0.33
GWA-345
Shallow
10/30/2018
0.26
0.24 j
35.3 j
<0.1
0.47 j
0.66
26.2
<0.2
<0.5
0.55
0.1
<5
<0.5
2.1 j
0.02 j
<0.3
3.2 j
<100
<0.5
<0.1
9.5
0.051 j
<50
<0.08
0.1 j,S1
0.24
GWA-35D
Deep
02/01/2018
NA
NA
5200
NA
NA
3.98
134
<0.2
NA
NA
<0.02
<5
NA
10
NA
NA
<10
<100
NA
NA
8.4
NA
123
NA
NA
NA
GWA-35D
Deep
05/01/2018
1.3
0.48 j,S1
4030
0.12 Sl
13.2
5.1
124
<0.2
0.22 j
5.4
<0.02
4.07 j
<0.5
11.6
<0.1
0.13 j,S1
5 j
<100
<0.5
0.11
11
0.056 j
123
<0.08
<0.5
0.87
GWA-35D
Deep
08/06/2018
0.38
0.19 j
5670
0.062 j
9.1
4.31
119
<0.2
0.28 j
2.1
0.014 j
3.5 j
<0.5
8.69
<0.1
<0.3
70.3
<100
<0.5
0.16
9.4
0.049 j
118
<0.08
<0.5
0.55
GWA-35D
Deep
11/01/2018
0.88
0.14 j,B
3940
<0.1
9.3
4.7
120
<0.2
0.14 j
3.8
<0.02
3.8 j
<0.5
8.2
<0.1
<0.3
6 j
<100
<0.5
0.072 j
12.7
0.0731
135
<0.08
0.1 j,S1
0.8
GWA-35S
Shallow
02/01/2018
NA
NA
12000
NA
NA
6.81
1680
<0.2
NA
NA
0.08
<5
NA
<5
NA
NA
<10 B
<100
NA
NA
32
NA
108
NA
NA
NA
GWA-35S
Shallow
02/02/2018
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
GWA-35S
Shallow
05/01/2018
18.6
<0.5
15500
<0.1
<0.5
7.59
1720
<0.2
<0.5
0.59
0.029
<5
<0.5
3.34 j
0.14
0.12 j,S1
<10
<100
<0.5
0.62
34.2
<0.1
106
<0.08
<0.5
20
GWA-355
Shallow
08/06/2018
18.6
<0.5
17500
0.041 j
<0.5
7.25
1730
<0.2
<0.5
0.36 j
0.03
<5
<0.5
2.65 j
0.13
<0.3
<10
<100
<0.5
0.77
31.5
0.046 j
97.6
<0.08
0.18 j
18.5
GWA-35S
Shallow
11/01/2018
16.1
0.2 j,B
16800
<0.1
0.14 j
6.5
1500
<0.2
<0.5
5.9
<0.02
<5
<0.5
2.8 j
0.099 j
<0.3
5.2 j
<100
<0.5
0.7
32.8
0.033 j
113
<0.08
0.17 j,S1
15.7
GWA-36D
Deep
01/29/2018
37.3
<0.5
1640
<0.1
5
27.3
4320
<0.2
<0.5
17.1
<0.02
7.23
<0.5
7.45
<0.1
<0.3
16.6
<100
<0.5
0.34
30.1
<0.1
171
0.088
<0.5
42.5
GWA-36D
Deep
04/27/2018
38.5
0.25 j,S1
2140
0.13
5.6
26.4
4530
<0.2
0.1 j
20.3
<0.02
7.23
0.4 j
7.46
<0.1
0.65S1
24.9 B
<100
<0.5
0.37
27.7
0.12
162
0.096
0.18 j,S1
41.5
GWA-36D
Deep
08/02/2018
36.7
<0.5
979
0.17 B
5.1
22.7
3920
<0.2
<0.5
14.9
<0.02
6.09
<0.5
6.58
<0.1
0.28 j
250
<100
<0.5
0.21
26.2
0.073 j
164
0.073 j
0.22 j
38.2
GWA-36D
Deep
10/31/2018
37.4
0.14 j
989
0.18
8.2
25.4
4630
<0.2
<0.5
15.3
0.021 B,S1
7.4
<0.5
7.6
<0.1
0.24 j
19.1
<100
<0.5
0.2
24.8
0.075 j
170
0.14
0.19 j,S1
37.9
GWA-36S
Shallow
01/29/2018
74.6
1.3 Sl
3030
0.26 S3
7
10.7
1090
<0.2
<0.5
22.2
0.13 Sl
5.26
0.86
<5
0.64S1
<0.3
28.8
2710
<0.5
2
22.5
1.3
53.6
0.12
<0.5
80.8
GWA-36S
Shallow
04/27/2018
65.6
1 S1
2730
0.22
7.1
7.57
880
<0.2
<0.5
16.2
0.076
5.14
3.8
2.33 j
0.6
0.12 j,S1
22.3 B
659
<0.5
2.1
31.2
0.83
55.7
0.24
0.27 j,S1
66.8
GWA-365
Shallow
08/02/2018
37.2
1.3
1070
0.35 B
9
5.85
499
<0.2
<0.5
9.5
0.64
5.95
0.43 j
2.12 j
0.82
<0.3
20.4
1730
<0.5
0.83
29.2
1.4
82.3
0.18
1 0.32 j
44.8
GWA-36S
Shallow
10/31/2018
96.3
1.8
2050
0.58
12.3
12.1
1600
<0.2
<0.5
26.2
0.19
7.7
0.89
4.3 j
1.1
0.16 j
45
2840
<0.5
2.3
43.1
2.5
137
0.47
0.57 S1
110
GWA-37D
Deep
01/29/2018
1.6
1.2 Sl
1210
0.29 S3
12
23.6
67.9
<0.2
<0.5
19.7
<0.02
5.43
<0.5
13.6
<0.1
1.9
<10
<100
<0.5
0.17
44.6
<0.1
56
<0.08
4.5
1.2
GWA-37D
Deep
05/03/2018
1.3
0.49 j,S1
1440
0.29
11
22.7
55.5
<0.2
0.36 j
14.5
<0.02
5.52
<0.5
14.1
<0.1
1
3.1 j
<100
0.23 j
0.23
42.6
0.053 j
52.6
<0.08
3.1
1.1
GWA-37D
Deep
07/31/2018
1.3
1.6
871
0.31
11.2
21.7
38.3
<0.2
0.5
13.2
0.014 j
5.18
<0.5
13.7
<0.1
1.4
2.5 j
<100
<0.5
0.11 S3
44.3
<0.1
56.9
0.043 j
3.4 B
1.1
GWA-37D
Deep
11/02/2018
1.4
0.64 Sl
571
0.3
12.1
22.1
42.3
<0.2
0.98
12.9
<0.02
5.2
<0.5
14
<0.1
1.6
4 j
54.7 j
<0.5
0.13
43.3
0.05 j,S1
61.6
<0.08
3.3
1.2
GWA-37S
Shallow
01/29/2018
105
<0.5
17300
0.21 Sl
0.8
10.7
7840
<0.2
<0.5
10
0.049 Sl
<5
<0.5
5.62
0.12 Sl
0.42
<10
<100
<0.5
1.1
49.8
0.14
83.8
<0.08
0.78
109
GWA-37S
Shallow
05/03/2018
96.9
0.12 j,S1
16700
0.19
0.65
10
7890
<0.2
0.15 j
9.5
0.037
3.81 j
<0.5
6.01
0.13
0.3 S1
7.3 j
<100
<0.5
0.98
51.6
0.13
71.6
<0.08
1.9 Sl
88.6
GWA-375
Shallow
07/31/2018
109
0.26 j,S1
13300
0.21
0.37 j
9.57
8800
<0.2
0.15 j
7.2
0.034
4.22 j
<0.5
5.62
0.14
0.41 S3
7.4 j
<100
<0.5
0.74 Sl
48.8
0.12
85.1
0.029 j
0.33 j,B
105
GWA-37S
Shallow
10/22/2018
72.3
0.19 j,Sl
17600
<0.1
0.44 j,S1
8.2
7500
<0.2
0.15 j
4.7
0.06
3.2 j
<0.5
6.3
0.1
0.28 j
5.9 j,B
<100
<0.5
0.96
51.6
0.094 j
63.1
<0.08
0.17 j
72.6
GWA-43D
Deep
01/29/2018
0.23
1.1 S1
<50
<0.1
22.2
11.7
<5
<0.2
<0.5
6.1
0.077 Sl
7.48
<0.5
7.88
<0.1
0.76
<10
<100
<0.5
0.13
119
<0.1
<50
<0.08
0.86
0.22
GWA-43D
Deep
04/26/2018
0.34
0.48 j,S1
<50
<0.1
22.5
11.6
2.9 j
<0.2
0.18 j
6.4
0.042
7.4
0.27 j
8.15
<0.1
0.73 S3
<10
<100
<0.5
0.23 S1
121
<0.1
26.6 j
<0.08
0.14 j,S1
0.34
GWA-43D
Deep
08/01/2018
0.12
0.93
45.7 j
<0.1
20.8
11.6
<5
<0.2
0.16 j
8.9
0.069
7.1
0.16 j
7.85
<0.1
0.79
8.2 j,B,2g,S1
<100
<0.5
0.11
116
<0.1
37.6 j
<0.08
0.56 S3
0.15
GWA-43D
Deep
10/23/2018
0.24
13.5 Sl
<50
<0.1
20.3
11.6
3.2 j
<0.2
<0.5
11.1
0.042
7.2
<0.5
7.7
<0.1
0.7
2.6 j
<100
<0.5
0.088 j
118
0.012 j
29.9 j
<0.08
0.2 j
0.24
GWA-43S
Shallow
01/29/2018
1.4
<0.5
713
<0.1
0.99
3.27
34.7
<0.2
<0.5
2.3
0.97
<5
<0.5
<5
<0.1
<0.3
<10
129
<0.5
<0.1
94.2
0.19
70
<0.08
0.64
1.3
GWA-43S
Shallow
04/26/2018
1.3
0.61 Sl
246
0.054 j
0.79
3.01
18.6
<0.2
<0.5
1.6
1.7
2.88 j
0.33 j
2.12 j
0.051 j
0.29 j,S1
3 j
55.7 j
<0.5
0.12 Sl
90.7
0.16
62.5
<0.08
0.44 j,S1
1.3
GWA-435
Shallow
08/01/2018
1.2
0.52
194
0.057 j
1.1
1 2.83
18.4
<0.2
<0.5
1
0.9
3.69 j
0.24 j
2.37 j
0.066 j
0.1 j
6.3 j,B,Sl
64.5 j
<0.5
0.069 j
96.5
0.2
85.4
0.043 j
0.58 Sl
1.2
GWA-43S
Shallow
10/23/2018
1.2
0.76 SS
156
<0.1
0.91 j
2.6
16
<0.2
<0.5
1.5
0.79
3.4 j
<0.5
2.7 j
0.062 j
0.44
4.6 j
<S00
<0.5
0.051 j
95.6
0.18
92.2
<0.08
0.48 j
1.1
Page 29 of 45

TABLE 3-3
2018 COMPREHENSIVE GROUNDWATER QUALITY DATA
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS LLC, MOORESBORO NC
Analytical Parameters
INORGANIC PARAMETERS (DISSOLVED CONCENTRATION WITH FILTER SIZE)
RADIONUCLIDES
OTHER PARAMETERS
Copper
Iron
Lead
Lithium
Manganese
Mercury
Molybdenum
Nickel
Phosphorus
Selenium
Strontium
Thallium
Vanadium
Zinc
Radium-226
Radium-228
Total
Radium
Uranium-238
Total Uranium
Uranium-238
(Dissolved)
Carbonate
Alkalinity
Fluoride
Phosphorus
Reporting Units
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
mg/L
ug/L
ug/L
ug/L
ug/L
ug/L
pCi/L
pCi/L
pCi/L
ug/mL
ug/mL
ug/mL
mg/L
mg/L
mg/L
15A NCAC 02L Standard
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
5^
NE
0.03^
NE
NE
2
NE
Background Threshold Values (Shallow Flow Zone)
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
2.58
NE
0.0005
NE
5
NE
NE
Background Threshold Values (Deep Flow Zone)
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
1.51
NE
0.0005
NE
5
NE
NE
Background Threshold Values (Bedrock Flow Zone)
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
3.1
NE
0.0005
NE
5
NE
NE
Sample ID
Sample Location
Aquifer Name
Sample
Collection Date
Analytical Results
GWA-32D
Deep
01/30/2018
0.76
<50
<0.1
NA
<5
<0.2
<0.5
<0.5
<0.05
<0.5
11.1
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-32D
Deep
04/30/2018
IA SI
<50
0.17
NA
12.8
<0.2
0.12j
0.98 S3
<0.05
0.44j
15.8
0.096j
0.5 S3
3.1j
NA
NA
NA
0.00022j
0.00022j
0.0002j
<5
<0.1
0.033j
GWA-32D
Deep
08/02/2018
0.65 S1
<50
<0.1
NA
3.2 j
<0.2
<0.5
0.2 j,S1
<0.05
<0.5
6.3
0.036 j
0.069 j,B
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
0.039 j
GWA-32D
Deep
10/29/2018
0.81
<50
<0.1
NA
7.2
<0.2
<0.5
<0.5
<0.05
<0.5
9.5
0.032 j
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-33BR
Bedrock
01/29/2018
<0.5
1310
<0.1
NA
332
<0.2
<0.5
<0.5
<0.05
<0.5
189
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-33BR
Bedrock
05/03/2018
0.12 j
518
<0.1
NA
267
<0.2
0.24 j
0.37 j
<0.05
<0.5
185
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
0.072 j
<0.05
GWA-33BR
Bedrock
08/01/2018
0.15 j,S1
<50
<0.1
NA
50.7
<0.2
0.23 j
0.15 j,B,SI
<0.05
<0.5
143
<0.1
<0.3
4.5 j
NA
NA
NA
NA
NA
NA
<5
0.068 j
<0.05
GWA-33BR
Bedrock
10/23/2018
2 S3
957
<0.1
NA
321
<0.2
0.23 j
<0.5
<0.05
<0.5
190
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
0.056 j
<0.05
GWA-33D
Deep
01/29/2018
<0.5
256 SI
<0.1
NA
87.2
<0.2
<0.5
21.5
<0.05
<0.5
158
<0.1
0.49 SI
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-33D
Deep
05/03/2018
<0.5
1020
<0.1
NA
107
<0.2
<0.5
13.4
<0.05
<0.5
162
<0.1
0.24j
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-33D
Deep
08/01/2018
0.21 j,S1
264
<0.1
NA
102
<0.2
<0.5
14.7
<0.05
<0.5
164
<0.1
0.16 j
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-33D
Deep
10/23/2018
0.47 j,S1
109
<0.1
NA
73.6
<0.2
<0.5
15
<0.05
<0.5
146
<0.1
0.21 j
9.2 j
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-33S
Shallow
01/29/2018
1.4
5570
<0.1 B
NA
639
<0.2
<0.5
20.7
<0.05
<0.5
159
<0.1
<0.3
30
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05 MI
GWA-33S
Shallow
05/03/2018
3.4
6480
0.034j
NA
506
<0.2
<0.5
13.1
<0.05
<0.5
125
0.066j
0.24j
29.9
NA
NA
NA
0.000034j
0.000034j
<0.0005
<5
0.066j
<0.05
GWA-33S
Shallow
08/01/2018
0.85 S1
5720
0.081j
NA
420
<0.2
<0.5
14.7
<0.05
<0.5
128
0.07j
0.18j
25
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-33S
Shallow
10/23/2018
2.2 S1
4220
0.11
NA
474
<0.2
<0.5
13.5
<0.05
<0.5
120
0.086j
0.096j
29
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-34S
Shallow
02/01/2018
NA
222
NA
NA
52.3
<0.2
NA
NA
<0.05
NA
11.9
NA
NA
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-34S
Shallow
04/30/2018
0.69 SI
<50
0.037j
NA
20.6
<0.2
<0.5
0.62 SI
<0.05
<0.5
12.8
0.033j
0.095 j,S1
<10
NA
NA
NA
<0.0005
<0.0005
<0.0005
<5
<0.1
<0.05
GWA-34S
Shallow
08/06/2018
0.52
93
0.13
NA
23.3
<0.2
<0.5
0.85
<0.05
<0.5
12.4
0.037 j
0.16 j
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-34S
Shallow
10/30/2018
5.1
<50
<0.1
NA
19.8
<0.2
<0.5
2.1
<0.05
<0.5
13.6
0.02 j
<0.3
10.8 Sl
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-35D
Deep
02/01/2018
NA
4650
NA
NA
113
<0.2
NA
NA
<0.05
NA
102
NA
NA
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-35D
Deep
05/01/2018
0.41 j,S1
4490
<0.1
NA
114
<0.2
0.16 j
4.5
<0.05
<0.5
105
<0.1
<0.3
4.5 j
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-35D
Deep
08/06/2018
0.16 j
3970
<0.1
NA
105
<0.2
0.14 j
2.2
<0.05
<0.5
99.2
0.029 j
0.094 j
69.8
NA
NA
NA
NA
NA
NA
<5
0.051 j
<0.05
GWA-35D
Deep
11/01/2018
2.4 S1
3890
<0.1
NA
119
<0.2
0.12 j
3.4
<0.05
<0.5
114
<0.1
<0.3
8.7 j
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-35S
Shallow
02/01/2018
NA
10800
NA
NA
1610
<0.2
NA
NA
<0.05
NA
47
NA
NA
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-35S
Shallow
02/02/2018
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
GWA-35S
Shallow
05/01/2018
0.62 SI
15500
0.031j
NA
1690
<0.2
<0.5
0.74 SI
<0.05
<0.5
50.6
0.16
0.088j
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-355
Shallow
08/06/2018
0.12j
15600
<0.1
NA
1520
<0.2
<0.5
0.78
<0.05
<0.5
47.3
0.15
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-35S
Shallow
11/01/2018
1.2 S1
16300
<0.1
NA
1510
<0.2
<0.5
6.2
<0.05
<0.5
46.7
0.097 j
<0.3
7.3 j
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-36D
Deep
01/29/2018
<0.5
878
0.11 B
NA
4190
<0.2
<0.5
17.2
<0.05
<0.5
314
<0.1
<0.3
14 B
0.307
0.9 B
1.207
<0.0005
<0.0005
NA
<5
<0.1
<0.05
GWA-36D
Deep
04/27/2018
0.24 j,S1
1080
0.14
NA
4020
<0.2
<0.5
16.5
<0.05
0.34j
309
<0.1
0.18 j,S1
15.5
0.158 U
0.365 U
0.523 U
0.000041j
0.000041j
<0.0005
<5
<0.1
<0.05
GWA-36D
Deep
08/02/2018
0.16 j,S1
573
0.13 S1
NA
3960
<0.2
<0.5
15.4
<0.05
<0.5
307
<0.1
0.21j
174
0.364 U
1.48 S1
1.84 U
<0.0005
<0.0005
<0.0005
<5
<0.1
<0.05
GWA-36D
Deep
10/31/2018
0.24 j,S1
555
<0.1
NA
4260
<0.2
<0.5
14.8
<0.05
<0.5
303
<0.1
0.11j
11.6
0.292 U
0.601 U
0.893 U
NA
<0.0005
NA
<5
<0.1
<0.05
GWA-36S
Shallow
01/29/2018
1.6
2040
0.23 B
NA
1120
<0.2
<0.5
22.3
<0.05
0.85
226
0.7
<0.3
27.6
0.369
0.244
0.613
<0.0005
<0.0005
NA
<5
0.3
<0.05
GWA-36S
Shallow
04/27/2018
1.1 Sl
871
0.1
NA
860
<0.2
<0.5
17.1
<0.05
3.6
182
0.62
0.084 j,S1
21
0 U
-0.106 U
0 U
0.0002 j
0.0002 j
0.00012 j
<5
0.19
<0.05
GWA-365
Shallow
08/02/2018
3.7 S1
813
0.39 SI
NA
520
<0.2
<0.5
11.1
<0.05
0.5
180
0.86
<0.3
23.5
0.46 U
0.424 U
0.884 U
0.00025j
0.00025j
0.00024j
<5
0.16
<0.05
GWA-36S
Shallow
10/31/2018
2.5
658
0.28
NA
1580
<0.2
<0.5
26.2
<0.05
1.1
376
1.2
<0.3
38.7
0.786 U
0.787
1.57
NA
0.00046 j
NA
<5
0.57
<0.05
GWA-37D
Deep
01/29/2018
<0.5
260
<0.1
NA
47.6
<0.2
<0.5
11.6
<0.05
<0.5
574
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-37D
Deep
05/03/2018
<0.5
458
<0.1
NA
45.9
<0.2
0.24 j
10.1
<0.05
<0.5
534
<0.1
0.28 j
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
0.054 SI
GWA-37D
Deep
07/31/2018
1.5
<50
0.065 j
NA
30.8
<0.2
0.39 j
12.2
<0.05
<0.5
552
<0.1
0.34
2.7 j,B
NA
NA
NA
NA
NA
NA
<5
<0.1
0.037 j
GWA-37D
Deep
11/02/2018
0.34 j,S1
176
<0.1
NA
40.4
<0.2
1 S1
10.6
0.04 j
<0.5
555
<0.1
0.52 SI
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
0.061
GWA-37S
Shallow
01/29/2018
<0.5
15700
<0.1 B
NA
7520 M1
<0.2
<0.5
10.1
<0.05
<0.5
73.8
0.12
<0.3
<10 B
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-37S
Shallow
05/03/2018
<0.5
15400
0.061j
NA
7210 M1
<0.2
0.13j
10.1
<0.05
<0.5
69.1
0.12
0.16j
7j
NA
NA
NA
NA
NA
NA
<5
<0.1
0.033 j,S1
GWA-37S
Shallow
07/31/2018
<0.5
12600
<0.1
NA
8010
<0.2
0.12 j
6.8
<0.05
<0.5
73.2
0.14
0.25 j
5.5 j,B
NA
NA
NA
NA
NA
NA
<5
<0.1 M1,R1
0.029 j
GWA-37S
Shallow
10/22/2018
<0.5
15200
<0.1
NA
6950
<0.2
<0.5
4.5
0.032 j
<0.5
64.2
0.082 j
0.073 j,S1
5.2 j
NA
NA
NA
NA
NA
NA
<5
<0.1
0.033 j
GWA-43D
Deep
01/29/2018
0.63
<50
<0.1
NA
<5
<0.2
<0.5
7.1
<0.05
<0.5
157
<0.1
0.8 S1
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-43D
Deep
04/26/2018
IA S1
<50
<0.1
NA
2.7j
<0.2
0. 12j
7.3
<0.05
0.2j
159
<0.1
0.73 S1
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-43D
Deep
08/01/2018
0.94 SI
<50
<0.1
NA
<5
<0.2
0.12 j
8
<0.05
<0.5
158
<0.1
0.69
3.9 j
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-43D
Deep
10/23/2018
0.81 SI
<50
<0.1
NA
3 j
<0.2
0.13 j
6.3
<0.05
<0.5
151
<0.1
0.52
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
0.026 j
GWA-43S
Shallow
01/29/2018
0.96
190
<0.1
NA
21.8
<0.2
<0.5
2.2
<0.05
<0.5
161
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-43S
Shallow
04/26/2018
2.8 S1
<50
<0.1
NA
14.7
<0.2
<0.5
1.9 S1
<0.05
0.22 j
164
0.035 j
0.14 j,S1
4.3 j
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-43S
Shallow
08/01/2018
0.68 SI
<50
<0.1
NA
14.4
<0.2
<0.5
1.3 S3
<0.05
0.22 j
159
0.053 j
0.23 j,B
4.7 j
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-43S
Shallow
10/23/2018
0.77 SI
<50
1 <0.1
NA
14.8
<0.2
<0.5
1 1.2
0.029 j
<0.5
143
0.057 j
<0.3
2.9 j
NA
NA
NA
NA
NA
NA
<5
0.054 j
0.026 j
Page 30 of 45

TABLE 3-3
2018 COMPREHENSIVE GROUNDWATER QUALITY DATA
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS LLC, MOORESBORO NC
Analytical Parameters
FIELD PARAMETERS
WATER QUALITY PARAMETERS
SELECTED 40CFR257 APPENDIX III CONSTITUENTS plus Sr
INORGANIC PARAMETERS (TOTAL CONCENTRATION)
pH
Water
Level
Temp
Spec
Cond
DO
ORP
Eh
Turbidity
Alkalinity
Bi-
carbonate
Alkalinity
Sulfide
Total
Organic
Carbon
Total
Suspended
Solids
Boron
Calcium
Chloride
Strontium
Sulfate
Total
Dissolved
Solids
Aluminum
Antimony
Arsenic
Barium
Beryllium
Cadmium
Chromium
(VI)
Chromium
Reporting Units
S.U.
ft
Deg C
umhos/cm
mg/L
mV
mV
NTUs
mg/L
mg/L
mg/L
mg/L
mg/L
ug/L
mg/L
mg/L
ug/L
mg/L
mg/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
15A NCAC 02L Standard
6.5-8.5
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
700
NE
250
NE
250
Soo
NE
1*
10
700
4*
2
10
10
Background Threshold Values (Shallow Flow Zone)
4.4-6.1
NE
NE
NE
NE
NE
NE
NE
13.67
14.42
0.1
1
NE
50
3.221
7.7
36.71
1.169
75.47
253
1
0.5
73.03
0.188
1
0.452
3.968
Background Threshold Values (Deep Flow Zone)
4.8-6.1
NE
NE
NE
NE
NE
NE
NE
19.74
18.13
0.1
1
NE
50
11
5.1
56.14
10
70.98
290
1
0.763
23
0.2
1
0.16
1.791
Background Threshold Values (Bedrock Flow Zone)
5.4-7.4
NE
NE
NE
NE
NE
NE
I NE
I 53
68.82
0.1
1
NE
50
16
1 8.656
107.1.
15.1
1.20
208.2
1
1
19.33
1
1
0.12
3.567
Sample ID
Sample Location
Aquifer Name
Sample
Collection Date
Analytical Results
GWA-44BR
Bedrock
01/26/2018
6.9
35.90
17
913
0.20
-70
135
6.3
98.4
98.4
<0.1
<1
5.7
60.5
141
19
318
357
694
492
<0.5
0.88
46.3
<0.1
<0.08
<0.025
8.5 S1
GWA-44BR
Bedrock
04/26/2018
8.1
33.11
19
856
0.40
11
216
1.1
96.2
96.2
<2.5
0.51j
<5
50.1
127
16.1
276
298
655
<100
0.24j
0.67 S1
35.6
<0.1
<0.08
<0.025
0.63 S1
GWA-44BR
Bedrock
08/01/2018
6.8
34.65
23
778
0.40
-22
183
4.8
93.2
93.2
<0.1
<1
4.3
58.5
110 M1
18.2
267
302 M6
592
278
0.52
0.69
37
<0.1
0.073 j
<0.025
0.54 B
GWA-44BR
Bedrock
10/23/2018
6.7
34.76
17
780
0.30
-30
175
2.6
95.5
95.5
<0.1
<1
4.2
58.2
107
16.7
257
300
599
<100
0.12 j
0.76
33.2
0.019 j
<0.08
<0.025
0.4 j,B,SI
GWA-44D
Deep
01/26/2018
7.2
43.75
17
797
0.20
-113
92
7.2
SOS
101
<0.1
<1
6.5
<50
124
16.4
283
297
588
146
<0.5
0.36
53.2
<0.1
<0.08
<0.025
2 S1
GWA-44D
Deep
04/26/2018
7.1
42.06
19
822
0.30
-146
59
9.5
106
106
0.13
<1
2.5
39.6j
123 M1
17
250
274
617
167
0.31j
0.36 S1
46.5
<0.1
<0.08
0.072
3.5
GWA-44D
Deep
08/01/2018
7.1
42.20
21
795
0.30
-106
99
6.2
102
102
<0.1
<1
11.6
42.5j
113
18.6
254
301
612
249
0.081j
0.26
45.8
<0.1
<0.08
<0.025
0.53 B
GWA-44D
Deep
10/23/2018
6.7
42.35
13
766
0.30
-98
107
1.8
99.4
99.4
<0.1
<1
<2.5
40.3j
109
17.4
231
285
593
<100
<0.5
0.21
41
0.033j
<0.08
<0.025
0.47 j,B,SI
GWA-44S
Shallow
01/26/2018
6.0
45.61
17
871
0.60
13
218
7.0
47.1
47.1
<0.1
<1
4.5 SI
<50
135
14.3
242
378
664
472
<0.5
0.3
36.3
0.12
<0.08
0.82 M1
25.4 S1
GWA-44S
Shallow
04/26/2018
6.9
44.26
19
946
0.80
45
250
9.6
36.4
36.4
<0.1
<1
2.8
37.4 j
140
14.3
212
402
740
208
<0.5
1.4
34
0.2
0.088
0.7
40.2
GWA-44S
Shallow
08/01/2018
5.7
44.09
20
939
1.00
242
447
4.0
38.4
38.4
<0.1
<1
<2.5
36.8 j
139
15.4
222
441
736
99.6 j
<0.5
0.54
33.4
0.2
0.099
2.7
2.1
GWA-44S
Shallow
10/23/2018
5.8
44.20
17
883
0.90
105
310
0.9
44.9
44.9
<0.1
<1
<2.5
33.2 j
124 M1
14.2
217
420 M6
707
<100
<0.5
0.35
30.6
0.16
0.21
2.1
2.5
GWA-47D
Deep
02/01/2018
5.5
50.83
17
139
1.80
79
284
9.8
10.5
10.5
<0.1
<1
4.5
348
5.49
30.3
78.3
<1
83
364
<0.5
0.35
164
0.25
<0.08
0.2 S1
29.5
GWA-47D
Deep
05/07/2018
5.3
48.13
26
135
1.90
152
357
5.4
10.1
10.1
<0.1
<1
<2.7
367
5.02
29.5
76.9
<1
95
1060
<0.5
0.13
175
0.27
0.085
0.048 S1
1.8 Sl
GWA-47D
Deep
08/03/2018
5.3
49.05
22
142
3.20
60
265
7.0
11.3
11.3
<0.1
<1
<2.5
399
6.1
30.2
76.4
<1
90
312
<0.5
<0.1
159
0.19
0.03 j
0.027
0.49 j
GWA-47D
Deep
10/25/2018
4.8
49.82
16
124
1.90
151
356
0.8
8
8
<0.1
<1
<2.5
378
4.2
28.9
64.9
<1
74
<100
<0.5
<0.1
140
0.24
0.074j
0.047
0.33 j,S1
GWA-48BR
Bedrock
02/02/2018
6.7
37.66
11
106
0.40
31
236
8.4
37.3
37.3
<0.1
<1
<2.5
<50
9.8
1.3
62.5
10.1
83 D6
<100
<0.5
<0.1
17.8
<0.1
<0.08
<0.025
0.9 S1
GWA-48BR
Bedrock
05/07/2018
6.6
28.50
16
102
0.70
12
217
9.2
31.5
31.5
<0.1
<1
<2.7
<50
10
1.2
58.7
10.4
91
<100
<0.5
<0.1
15.2
<0.1
<0.08
<0.025 P4,R0
0.28 j,S1
GWA-48BR
Bedrock
08/07/2018
6.3
29.66
19
105
3.20
6
211
9.7
33.6
33.6
<0.1
<1
7.4
<50
10.5
1.6
70.5
12.4
86
659
<0.5
0.065 j
22.2
0.043 j
<0.08
<0.025
0.86
GWA-48BR
Bedrock
10/30/2018
6.9
31.10
18
102
3.40
-18
187
2.9
34.9
34.9
<0.1
<1
<2.5
<50
10.2
1.5
66.5
12.1
96
<100
<0.5
<0.1
19
<0.1
<0.08
<0.025
0.29 j
GWA-51D
Deep
02/01/2018
5.4
54.71
15
701
0.50
99
304
9.0
6.1
6.1
<0.1
<1
<5
851
62.8
55.9
265
250
492
271
<0.5
1.6
114
0.13
0.42 SI
0.11 SS
29.3
GWA-51D
Deep
05/01/2018
5.1
54.25
22
673
0.46
328
533
3.1
4j
4j
<0.1
<1
<2.5
713
64.9
56.7
205
217
467
93.5j
0.12j
1.3
94.2
0.13
0.32
0.94 S1
1.8
GWA-51D
Deep
08/01/2018
5.0
54.45
23
702
1.10
410
615
6.0
2.8j
2.8j
<0.1
<1
<2.6
824
64.9
66.1
244
245
500
160
<0.5
1
108
0.16
0.29
0.42 S1
1.3 B
GWA-51D
Deep
11/02/2018
5.0
54.50
18
725
1.10
250
455
2.3
2.4j
2.4j
<0.1
<1
<2.6
841
69.7
70.4 M6
256
233
513
80.2j
<0.5
1.5
106
0.14
0.29
0.68
0.64 S1
GWA-54BRO
Bedrock
01/29/2018
6.7
46.88
17
439
0.40
33
238
5.3
70.4
70.4
<0.1
<1
10.2
90.3
63.8
23.2
169
109
296
103
<0.5
0.62 S1
<5
<0.1
<0.08
<0.025
2.7 S1
GWA-54BRO
Bedrock
05/01/2018
6.6
45.43
21
439
0.80
-43
162
9.8
64.6
64.6
0.49
<1
3.4
80.5
67.9
24.1
139
101
297
128
0.31j
1.4
<5
<0.1
0.038j
0.048 S1
3.2
GWA-54BRO
Bedrock
08/01/2018
6.5
45.34
22
437
0.10
-34
171
9.4
66.8
66.8
0.051 j
<1
6.3
94.9
64.2
28.1
170
114
329
170
0.11 j
1.2
3.3 j
<0.1
<0.08
<0.025
2.8
GWA-54BRO
Bedrock
11/02/2018
6.5
45.48
18
444
0.10
16
221
9.2
65.6
65.6
0.19
<1
4.3
102
66.1
27.4
178
112
317
78.3j
0.29j
0.83
<5
0.017j
<0.08
0.088
8.8
GWA-54D
Deep
01/29/2018
7.1
46.35
15
423
0.50
-105
100
9.1
66
66
0.24
2.8
10.1
64.2
48.4
33
254
77.8
276
151
<0.5
0.37 S1
20.1
<0.1
<0.08
<0.025
1.3 S1
GWA-54D
Deep
05/01/2018
7.3
45.26
15
413
1.50
-75
131
9.6
136
136
0.5
6.5
7.9
57.3
57.1
32.3
205
25.2
284
140
<0.5
0.45
16.9
<0.1
<0.08
0.058 S1
1.8
GWA-54D
Deep
08/01/2018
7.0
45.20
22
427
0.40
-216
-11
8.4
141
141
0.63
0.94j
14.5
66.2
53.5
35.6
224
30.4
268
118 SI
<0.5
0.33
18.8
<0.1
<0.08
0.055 SS
0.75
GWA-54D
Deep
10/29/2018
7.4
45.44
19
431
0.70
-315
-110
2.1
130
130
0.78
0.95j
<2.5
71.8
49.8
33.7
205
34.7
280
<100
<0.5
0.58
15.6
<0.1
<0.08
0.048
0.32j
GWA-54S
Shallow
01/29/2018
5.1
46.96
15
88
3.60
200
405
5.8
<5
<5
<0.1
<1
<2.5
71.8
0.707
18.1
21.7
<1
49
183
<0.5
<0.1
62.6
0.12
0.089
<0.025
1.3 S1
GWA-54S
Shallow
05/01/2018
4.8
45.83
18
85
4.30
126
331
8.4
1.4 j
1.4 j
<0.1
<1
6.5
68.9
0.506
17.6
18.5
<1
47
363
<0.5
0.056 j
69.7
0.15
0.064 j
0.37 S1
4.1
GWA-54S
Shallow
08/01/2018
4.7
45.75
23
77
4.30
-160
45
3.7
<5
<5
<0.1
<1
<2.5
66.2
0.502
18
21.1
<1
52
131
<0.5
<0.1
79.2
0.11
0.049 j
0.033 SI
0.32 j
GWA-54S
Shallow
10/29/2018
4.9
45.26
19
97
4.90
164
369
2.5
<5
<5
<0.1
<1
<2.5
71.2
0.36
19.6
20.4
<1
55 D6
137
<0.5
0.061 j
83.6
0.16
0.056 j
0.036
1.7
GWA-56D
Deep
01/26/2018
6.5
32.33
17
410
0.40
6
211
9.0
61.3
61.3
<0.1
<1
4.1
<50
51.6
17.1
182
119
296
<100
<0.5
0.4
25.7
<0.1
<0.08
<0.025
8.2 S1
GWA-56D
Deep
04/26/2018
6.5
30.81
20
448
0.40
-6
199
6.8
64.2
64.2
<0.1
<1
<2.5
<50
51.7
17.9
162
109
315
62.6j
0.15j
0.29 S1
22.1
<0.1
<0.08
<0.025
1.3 S1
GWA-56D
Deep
07/31/2018
6.4
32.24
28
455
0.80
-45
160
6.3
74.9
74.9
<0.1
<1
4.8
<50
56
17.5
167
107
335
145
0.18j
0.2 S1
24.4
<0.1
<0.08
<0.025
0.67 SI
GWA-56D
Deep
10/22/2018
6.5
32.18
20
443
0.80
-34
171
3.1
58.5
58.5
<0.1
<1
4.1
<50
53.1
18.4
171
118
306
72.8j
<0.5
0.16
20.8
0.042j
0.051j
<0.025
1.7
GWA-56S
Shallow
01/26/2018
6.4
30.55
21
473
0.50
-9
196
9.1
85.5
85.5
<0.1
<1
<2.6
<50
54.6
16.2
78.2
134
312
207
<0.5
0.81
34.7
<0.1
<0.08
<0.025
3.8 S1
GWA-56S
Shallow
04/30/2018
6.2
29.43
21
482
0.90
37
242
9.0
75.2
75.2
<0.1
0.67j
3.6
35.2j
54.8
17
66.7
143
312
704
0.23j
0.31 SI
32.8
<0.1
0.036j
0.61 S1
1.2 S1
GWA-56S
Shallow
07/31/2018
5.9
29.94
26
483
1.60
-194
11
8.7
60.9
60.9
<0.1
<1
10.9
35.6 j
51.3
17.1
59.7
128 M1
327
731
<0.5
0.074 j,S1
26.1
<0.1
<0.08
0.99 M6,S1
1.4 S1
GWA-56S
Shallow
10/22/2018
6.1
29.80
20
470
1.50
44
249
6.0
67
67
<0.1
0.66j
5.3 S1
33.7j
48.5
17.1
62.8
142
340
292 S3
<0.5
0.12
24.7
0.021j
<0.08
0.85
1.6
IB-06D
Deep
11/01/2018
6.8
18.15
19
381
0.10
-369
-164
1.9
103
103
<0.1
<1
<2.5
164
51.3
23.7
212
58.2
258
<100
<0.5
0.18
8.2
0.024j
<0.08
<0.025
1.2 B
IB-06S
Shallow
11/02/2018
5.5
18.98
19
5o5
1.50
-72
133
3.2
26
26
<0.1
0.54j
<5
782
59.4 M1
11.3
377
180
341
<100
0.3j
0.065j
40.2
0.064j
0.2
0.034 M1,R1
3.3
IB-07D
Deep
11/01/2018
6.4
20.50
20
273
0.10
-74
131
4.0
102
102
<0.1
0.56j
<2.5
<50
31
15.9
128
18.7
182
<100
<0.5
0.49
11.6
<0.1
<0.08
<0.025
4.6
IB-07S
Shallow
11/01/2018
5.6
20.31
19
430
0.10
66
271
2.0
25.1
25.1
<0.1
0.69j
<2.5
372
44.9 M1
43.8
292
102
293
51.4j
0.11j
14.2
55.2
0.25
0.34 B,BC
<0.025
1.1 B
MW-02DA
Bedrock
04/27/2018
6.7
36.18
18
181
0.30
14
219
9.7
64.9
64.9
<0.1
<1
<2.5
<50
12.8
6.6
189
18.7
139
134
1.6
0.87 SI
26.3
<0.1
<0.08
0.19 Si
4 S1
MW-02DA
Bedrock
08/01/2018
6.5
36.63
22
188
0.60
-112
93
2.8
62.5
62.5
<0.1
<1
<2.5
<50
13.4
7
141
20.7
144
<100
0.5 j
0.57
24.6
<0.1
<0.08
<0.025
0.43 j
MW-02DA
Bedrock
10/23/2018
6.5
36.73
18
193
0.40
-145
60
1.1
65.3
65.3
0.11
<1
<2.5
<50
13.5
7
136
21.8
139
<100
0.45j
0.92
33.6
0.012j
<0.08
<0.025
0.59 S1,B
MW-08D
Deep
01/31/2018
6.2
8.92
16
357
0.20
34
239
8.5
40.9
40.9
<0.1
<1
<2.5
107
15.9
50.1
104
47.8
204
<100
<0.5
<0.1
39.7
<0.1
<0.08
<0.025
<o.5
MW-08D
Deep
04/30/2018
1 6.0
1 8.70
26
369
1.00
-100
105
7.0
6.2 MI
6.2
<0.1
<1
6
136
16.5
57.4
105
56.3
211
1 <100
<0.5
<0.1
40
0.059j
<0.08
0.07 S1
0.7 S1
Page 31 of 45

TABLE 3-3
2018 COMPREHENSIVE GROUNDWATER QUALITY DATA
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS LLC, MOORESBORO NC
Analytical Parameters
INORGANIC PARAMETERS (TOTAL CONCENTRATION)
INORGANIC PARAMETERS (DISSOLVED CONCENTRATION WITH FILTER SIZE)
Cobalt
Copper
Iron
Lead
Lithium
Magnesium
Manganese
Mercury
Molybdenum
Nickel
Nitrate
+ Nitrite
Potassium
Selenium
Sodium
Thallium
Vanadium
Zinc
Aluminum
Antimony
Arsenic
Barium
Beryllium
Boron
Cadmium
Chromium
Cobalt
Reporting Units
ug/L
ug/L
ug/L
ug/L
ug/L
mg/L
ug/L
ug/L
ug/L
ug/L
mg-N/L
mg/L
ug/L
mg/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
15A NCAC 02L Standard
1*
1000
300
15
NE
NE
50
1
NE
100
NE
NE
20
NE
0.2*
0.3*
1000
NE
NE
NE
NE
NE
NE
NE
NE
NE
Background Threshold Values (Shallow Flow Zone)
10.65
6.569
765.3
1
NE
2.479
168.8
0.2
1
6.256
8.837
5
1
6.139
0.117
1.059
15
NE
NE
NE
NE
NE
NE
NE
NE
NE
Background Threshold Values (Deep Flow Zone)
9.041
9.453
559.7
1
NE
1.6
78.31
0.2
1
12.56
2.8
5
1
4.41
0.063
1.095
15.03
NE
NE
NE
NE
NE
NE
NE
NE
NE
Background Threshold Values (Bedrock Flow Zone)
1.497
5
6220
1
NE
2.328
89.4
0.2
1.716
5
0.92
5
1
1 7.42
0.1
0.37
10
NE
NE
NE
NE
NE
NE
NE
NE
NE
Sample ID
Sample Location
Aquifer Name
Sample
Collection Date
Analytical Results
GWA-44BR
Bedrock
01/26/2018
2.3
1.4 S1
1230
0.12 SI
19.9
21.9
476
<0.2
3
25
<0.02
16.7
<0.5
14.3
<0.1
0.6 S1
<10
<100
<0.5
0.75
36.5
<0.1
54
<0.08
3.1
2
GWA-44BR
Bedrock
04/26/2018
2.1
0.56 SI
839
0.058 j,S1
17.3
20.2
448
<0.2
2.5
16.6
<0.02
14.8
0.31 j
13.3
<0.1
0.37 S3
2.8 j
<100
0.19 j
0.63
34.6
<0.1
43.3 j
<0.08
0.18 j,S1
2
GWA-44BR
Bedrock
08/O1/2018
1.9
3.1
892
0.2
15.1
18.4
396
<0.2
6.9
17.5
0.018 j
14.5
<0.5
13.6
<0.1
0.47
17.4 B,S1
<100
0.26 j
0.63
31.5
<0.1
51.1
<0.08
<0.5
1.7
GWA-44BR
Bedrock
10/23/2018
1.9
1.7 S1
816
<0.1
15.2
18.1
406
<0.2
2.6
14.6
<0.02
13.6
<0.5
12.4
<0.1
0.24 j
5 j
<100
<0.5
0.68
32.2
0.015 j
60.3
<0.08
0.83
1.8
GWA-44D
Deep
O1/26/2018
0.72
<0.5
515
<0.1
21.9
19
260
<0.2
1.8
7.4
<0.02
12
<0.5
13.7
<0.1
0.44 S3
<10
<100
<0.5
0.27
46.8
<0.1
<50
<0.08
2.3
0.69
GWA-44D
Deep
04/26/2018
0.59
0.6 S3
588
0.11
20.8
18.1
218
<0.2
1.6
6.7
<0.02
11.4
<0.5
14
<0.1
0.7 S3
<10
<100
0.28 j
0.4 S1
42
<0.1
32 j
<0.08
1.1 S1
0.49
GWA-44D
Deep
08/O1/2018
0.6
0.33 j
588
0.093 j
18.2
18.5
190
<0.2
3.8
7.5
<0.02
10.8
<0.5
13.6
<0.1
0.43
3.3 j,B,SI
<100
<0.5
0.22
42.4
<0.1
40.2 j
<0.08
<0.5
0.48
GWA-44D
Deep
10/23/2018
0.74
1.9S1
321
<0.1
18.4
17.7
176
<0.2
1.7
6.3
<0.02
10.4
<0.5
13
<0.1
0.17 j
<10
<100
<0.5
0.18
39.1
<0.1
41.4 j
<0.08
0.1 j
0.62
GWA-44S
Shallow
O1/26/2018
0.56
0.99 SI
1160
<0.1
0.86
27.4
37.6
<0.2
0.93
16.7
0.49
7.58
4.7
10.1
0.11
0.7
<10
<100
<0.5
0.4
31
0.12
<50
<0.08
6.2
0.32
GWA-44S
Shallow
04/26/2018
0.77
1.5 SI
1310
0.052 j
0.91
27.1
54.9
<0.2
1.3
26.1
0.71
7.31
5.1
8.82
0.058 j
0.75 S1
2.5 j
<100
<0.5
1.2
31.1
0.2
30.3 j
0.091
1.9
0.46
GWA-44S
Shallow
08/O1/2018
0.1
2.7
110
0.055 j
0.76
28
19.7
<0.2
1.5
3.1
0.6
7.85
3.4
9.68
0.12
0.3
3.7 j
57.7 j
<0.5
0.5
31.4
0.18
34.9 j
0.1
2.2 S1
0.1
GWA-44S
Shallow
10/23/2018
0.1
0.76 S1
30.7 j
<0.1
0.64 j,S1
27.6
9.8
<0.2
0.37 j
2.1
0.42
7
3.2
9.5
0.12
0.43
<10
<100
<0.5
0.29
29.8
0.16
37.3 j
0.22
2
0.095 j
GWA-47D
Deep
02/O1/2018
1.8
0.7 S1
486
0.16 SI
3.2
3
189
<0.2
0.64 SI
26.1
0.35
<5
<0.5
10.2
0.16 S1
8.2
11.4
<100
<0.5
0.23
145
0.25
312
<0.08
22.8
1.8
GWA-47D
Deep
05/07/2018
1.5
1.3
1010
0.56
3.6
3.2
168
0.07 j
0.19 j
2.9 S1
0.42
4.74 j
<0.5
10.4
0.18
0.78
15.2
219
<0.5
0.057 j
146
0.23
333
0.078 j
1.2
1.3
GWA-47D
Deep
08/03/2018
1.1
0.87
287
0.06 j
2.5
3.25
178
<0.2
0.17 j
1.5
0.45
4.58 j
<0.5
10.7
0.13
<0.3
8.8 j
58.7 j
<0.5
<0.1
135
0.21
338
0.03 j
0.34 j,B
1
GWA-47D
Deep
10/25/2018
1.1
0.25 j
<50
<0.1
2.9
2.9
104
0.13 j
<0.5
2
0.47
3.9 j
<0.5
9.4
0.15
<0.3
10.6
<100
<0.5
<0.1
138
0.22
357
0.068 j
0.18 j
0.96
GWA-48BR
Bedrock
02/02/2018
<0.1
<0.5
2320
<0.1
6.7
1.62
53
<0.2
<0.5
0.88 SI
0.02 SI
<5
<0.5
5.06
<0.1
<0.3
<10
<100
<0.5
<0.1
16.6
<0.1
<50
<0.08
<0.5
<0.1
GWA-48BR
Bedrock
05/07/2018
<0.1
<0.5
2170
<0.1
6.7
1.67
42.7
<0.2
0.23
<0.5
<0.02
3.46 j
<0.5
5.45
<0.1
<0.3
<10
<100
<0.5
0.062 j
15.4
<0.1
<50
<0.08
<0.5
<0.1
GWA-48BR
Bedrock
08/07/2018
0.1
0.34 j
2700
0.18
6.6
1.84
50.7
<0.2
0.25 j
0.34 j
<0.02
4.07 j
<0.5
5.97
<0.1
0.22 j
4 j
<100
<0.5
<0.1
16.9
<0.1
<50
<0.08
<0.5
<0.1
GWA-48BR
Bedrock
10/30/2018
0.1
<0.5
2090
<0.1
5.1
1.7
53.8
<0.2
0.28 j
0.76
<0.02
3.4 j
<0.5
5.5
<0.1
<0.3
<10
<100
<0.5
<0.1
17.9
0.01 j
<50
<0.08
0.12 j,51
0.034 j
GWA-51D
Deep
02/O1/2018
72.9
24.6
1160
0.61
4.8
24.1
9030
<0.2
1.5
41.2
0.1
<5
1.7
14.6
0.26 51
7.6
36.9
102
<0.5
1.5
91.5
0.13
743
0.46
6.7
70.7
GWA-51D
Deep
05/O1/2018
65.6
25.5
97.2
0.16 S3
3.3
23.7
6830
<0.2
0.23 j
15.5
0.099
4.08 j
1.8
14.2
0.31
0.083 j,S1
28.4
55.9 j
<0.5
1.1
88.4
0.12
720
0.3
1.4
64.6
GWA-51D
Deep
08/O1/2018
71.2
24.2
201
0.37
2.7
23.6
8520
<0.2
1.2
16.3
0.11
4.04 j
1.7
13.9
0.3
0.065 j
33.8 B
89.1 j
<0.5
1.1
96.8
0.13
742
0.28
0.54 S1
67.8
GWA-51D
Deep
11/02/2018
85.9
16.3
<50
0.11
2.9
24.5
9400
<0.2
0.19 j
16.6
0.13
4.1 j
1.7
14.3
0.32
<0.3
33.6
74.4 j
<0.5
1.4
97.2
0.13 SI
777
0.77
0.62 S1
81.8
GWA-54BRO
Bedrock
O1/29/2018
0.11
0.93 SI
629
0.74
14.1
4.01
84.4
<0.2
3.7
1.4
0.064 SI
<5
1.8
13.8
<0.1
<0.3
<10
113
<0.5
0.71
<5
<0.1
87.4
<0.08
3.7
0.2
GWA-54BRO
Bedrock
05/O1/2018
0.24
0.69 SI
1910
0.54 SI
14
4.07
62.2
<0.2
3.7
1.9
0.05
2.86 j
1.7
15.5
<0.1
0.39 Si
8.8 j
62.6 j
0.34 j
0.66
<5
<0.1
84.7
<0.08
1.2
0.11
GWA-54BRO
Bedrock
08/O1/2018
0.16
1.1
1120
0.47
12.6
4.19
52.9
<0.2
3
1.5
0.051
2.83 j
1.6
14.9
<0.1
0.13 j
3.6 j
<100
0.083 j
0.6
<5
<0.1
88.4
<0.08
<0.5
0.083 j
GWA-54BRO
Bedrock
11/02/2018
0.21
4.9
950
0.62
14.7
4.4
44
<0.2
3.6
4.9
0.07
2.8 j
1.2
15.3
<0.1
0.37 S1
7.5 j
<100
0.11 j,51
0.56
<5
<0.1
96.8
<0.08
1.1 S1
0.056 j,S1
GWA-54D
Deep
O1/29/2018
0.1
1.4 S1
3260
<0.1 B
7.8
5.73
129
<0.2
12.9
0.87
<0.02
6.32
<0.5
20
<0.1
<0.3
<10
<100
<0.5
0.37
17.2
<0.1
55.6
<0.08
<0.5
<0.1
GWA-54D
Deep
05/O1/2018
0.069 j
1.4 S1
1270
0.096 j,S1
5.3
5.18
190
<0.2
2.7
1
<0.02
6.47
<0.5
20.5
<0.1
0.14 j,S1
5.4 j
<100
0.22 j
0.61
17
<0.1
54
<0.08
0.46 j
0.04 j
GWA-54D
Deep
08/O1/2018
0.073 j
0.43 j
787
0.1
4.5
5.22
248
<0.2
13.8
1.2
<0.02
6.56
<0.5
19
<0.1
0.18 j
6.2 j
<100
<0.5
0.37
16.5
<0.1
63.5
<0.08
<0.5
<0.1
GWA-54D
Deep
1O/29/2018
0.043 j
0.34 j,S1
210
<0.1
3.7
5.4
233
<0.2
1.6
<0.5
<0.02
5.3
<0.5
16.8
<0.1
0.14 j
2.9 j
<100
<0.5
0.51
15.9
<0.1
73.6
<0.08
0.13 j,51
0.016 j
GWA-54S
Shallow
O1/29/2018
15.7
1.2 S1
209
0.12 B,S1
3.3
1.54
522
<0.2
<0.5
3.5
0.44
<5
<0.5
8.18
0.24S1
<0.3
14.9
<100
<0.5
<0.1
58
<0.1
65.1
<0.08
1.2
17
GWA-54S
Shallow
05/O1/2018
7.6
1.5 S1
588
0.3 51
3
1.47
220
<0.2
0.087 j
4.8
0.52
3.65 j
<0.5
9.02
0.19
0.16 j,S1
14.6
66.4 j
<0.5
<0.1
66.1
0.13
57.1
0.047 j
1.2
8.3
GWA-54S
Shallow
08/O1/2018
5.7
3.6
131
0.41
2.7
1.44
192
<0.2
3.5
1.9
0.74
3.59 j
<0.5
7.97
0.16
0.079 j
16.7
82.2 j
<0.5
<0.1
69
0.12
59.6
0.049 j
0.34 j,S1
5.6
GWA-54S
Shallow
10/29/2018
4.3
1.4 S1
129
0.24
2.7
1.5
119
<0.2
0.63
1.9
0.71
3.4 j
<0.5
8.4
0.18
0.2 j
11.9
61.5 j
<0.5
<0.1
75.5
0.14
61.4
<0.08
2
4.1
GWA-56D
Deep
O1/26/2018
0.86
0.89 S1
2550
<0.1
16.5
11.2
242
<0.2
0.89
13.5
0.58
6.25
1.4
11.3
<0.1
0.35S1
<10
<100
<0.5
0.23
27.4
<0.1
<50
<0.08
7.2
0.75
GWA-56D
Deep
04/26/2018
0.56
0.93 SI
1450
0.05 j
17.1
10.6
250
<0.2
0.18 j
8.5
0.81
7.19
1.5
12.7
<0.1
0.31S1
5.8 j
<100
0.16 j
0.13 S1
25.9
0.043
<50
<0.08
0.23 j,51
0.6
GWA-56D
Deep
07/31/2018
0.62
6.6
1350
0.35
16.6
10
333
<0.2
10.3
14.6
0.38
7.08
0.58
12.6
<0.1
0.31
10.5
<100
0.15 j
0.15 S1
23.7
0.045 j
<50
<0.08
<0.5
1.1
GWA-56D
Deep
1O/22/2018
0.52
3.3
1480
0.25
15.6
9.8
319
<0.2
1.5
6.9
0.7
6.8
1.3
11
<0.1
0.33
5.1 j,B
<100
<0.5
0.072 j,S1
24.5
0.048 j
<50
<0.08
<0.5
0.54
GWA-56S
Shallow
O1/26/2018
4.3
<0.5
2830
0.93
3
23.3
1170
<0.2
<0.5
3 SI
0.64
<5
1.2
5.07
<0.1
<0.3
<10
<100
<0.5
0.66
29.4
<0.1
<50
<0.08
0.61 SI
3.8
GWA-56S
Shallow
04/30/2018
3.4
0.41 j,S1
927
0.21 S1
1.3
23.2
256
<0.2
0.17 j,S1
1.6
0.83
2.82 j
1.4
5.22
0.11
0.48 S3
6.2 j,S1
50.2 j
0.29 j
0.29
28
<0.1
32.2 j
0.054 j
1.6 S1
2.9
GWA-56S
Shallow
07/31/2018
0.45
0.51
739
0.15
0.45 j
22.7
18.6
<0.2
0.29 j
0.76
1.1
<5
1.8
5.02
0.042 j
0.36
4.3 j
<100
<0.5
0.054 j,S1
21.6
<0.1
38.2 j
<0.08
1.1
0.38
GWA-56S
Shallow
1O/22/2018
0.51
0.99 SI
344 RO
0.16 S3
0.6 j,S1
22.2
13
<0.2
0.97 S3
3.3
1.1
<5
1.7
5 j
0.053 j
0.58S1
5.4 j,B
<100
<0.5
0.055 j,S1
23.1
0.023 j
32.5 j
<0.08
1.1
0.34
IB-06D
Deep
11/O1/2018
0.046 j
<0.5
2050
<0.1
12.2
8.5
315
<0.2
0.34 j
1
<0.02
3.6 j
<0.5
8.5
<0.1
0.075 j
13.1
<100
<0.5
0.16
8.1
0.029 j
159
<0.08
0.28 j
0.044 j
IB-065
Shallow
11/02/2018
25.9
0.31 j
652
<0.1
4.5
13.8
6080 M 1
<0.2
0.13 j
8.3
0.14
3.7 j
<0.5
11.4
0.055 j
<0.3
10.9
<100
0.2 j
0.064 j
35.6
0.058 j
712
0.15 BC
1.1
24.9
IB-07D
Deep
11/O1/2018
1.4
0.53
436
<0.1
6.4
8.7
207
<0.2
2.3
4.3
0.32
2.8 j
<0.5
10.1
<0.1
0.4
3.3 j
<100
<0.5
0.45
11.2
<0.1
<50
<0.08
1.5
1.3
IB-075
Shallow
11/01/2018
13.1
0.13 j
1690
<0.1
12.6
10.3
2210
<0.2
1.2
35.1
0.11
5.1
<0.5
12.2
0.19
0.24 j
5.4 j
<100
<0.5
13
56.2
0.22
383
0.32
0.4 j
13.4
MW-02DA
Bedrock
04/27/2018
0.84
1.4 S1
977
0.23
27.5
2.22
493
<0.2
3.5
5.7
0.078
3.64 j
<0.5
19.3
0.04 j
0.24 j,S1
9.2 j
<100
1.2
0.3
19.7
<0.1
<50
<0.08
0.56 S1
0.38
MW-02DA
Bedrock
08/01/2018
1.1
0.78
650
0.04 j
19.5
2.15
650
<0.2
4.2
3.7
<0.02
3.18 j
<0.5
19
<0.1
<0.3
6.3 j,B,SI
<100
0.57
0.51
23.1
<0.1
<50
<0.08
<0.5
0.93
MW-02DA
Bedrock
1O/23/2018
2.5
0.79 SI
2260
<0.1
18.2
2.3
1100
<0.2
4.5
5.1
<0.02
3.1 j
<0.5
18.8
<0.1
0.098 j
5.9 j
<100
0.24 j
0.73
38.4
0.01 j
<50
<0.08
0.17 j
3.2
MW-08D
Deep
01/31/2018
4.9
0.51 SI
35700
<0.1
6.8
4.34
5260
<0.2
<0.5
0.57 SI
0.063
<5
<0.5
13.5
<0.1
<0.3
<10
<100
<0.5
<0.1
35.9
<0.1
105
<0.08
<0.5
6.1
MW-08D
Deep
04/30/2018
1 5
10.28 j,B,SI
33900
<0.1
6.5
5.05
5270
<0.2
<0.5
0.61
0.054
3.25 j
<0.5
15.4
<0.1
0.11 j,S1
<10
<100
<0.5
<0.1
37
0.046 j
128
<0.08
<0.5
4.9
Page 32 of 45

TABLE 3-3
2018 COMPREHENSIVE GROUNDWATER QUALITY DATA
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS LLC, MOORESBORO NC
Analytical Parameters
INORGANIC PARAMETERS (DISSOLVED CONCENTRATION WITH FILTER SIZE)
RADIONUCLIDES
OTHER PARAMETERS
Copper
Iron
Lead
Lithium
Manganese
Mercury
Molybdenum
Nickel
Phosphorus
Selenium
Strontium
Thallium
Vanadium
Zinc
Radium-226
Radium-228
Total
Radium
Uranium-238
Total Uranium
Uranium-238
(Dissolved)
Carbonate
Alkalinity
Fluoride
Phosphorus
Reporting Units
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
mg/L
ug/L
ug/L
ug/L
ug/L
ug/L
pCi/L
pCi/L
pCi/L
ug/mL
ug/mL
ug/mL
mg/L
mg/L
mg/L
15A NCAC 02L Standard
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
5^
NE
0.03^
NE
NE
2
NE
Background Threshold Values (Shallow Flow Zone)
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
2.58
NE
0.0005
NE
5
NE
NE
Background Threshold Values (Deep Flow Zone)
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
1.51
NE
0.0005
NE
5
NE
NE
Background Threshold Values (Bedrock Flow Zone)
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
3.1
NE
0.0005
NE
5
NE
NE
Sample ID
Sample Location
Aquifer Name
Sample
Collection Date
Analytical Results
GWA-44BR
Bedrock
01/26/2018
<0.5
702
<0.1
NA
419
<0.2
2.9
21.3
<0.05
<0.5
282
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
0.1
<0.05
GWA-44BR
Bedrock
04/26/2018
<0.5
728
<0.1
NA
411
<0.2
2.5
15.8
<0.05
<0.5
280
<0.1
0.21 j,S1
<10
NA
NA
NA
NA
NA
NA
<5
0.079j
<0.05
GWA-44BR
Bedrock
08/01/2018
0.62 51
644
<0.1
NA
354
<0.2
4.3
14.9
<0.05
<0.5
253
<0.1
0.18 j,B
7.2 j
NA
NA
NA
NA
NA
NA
<5
0.084 j
<0.05
GWA-44BR
Bedrock
10/23/2018
0.71 SI
733
<0.1
NA
379
<0.2
2.6
13.3
<0.05
<0.5
241
<0.1
0.09 j
3.6 j
NA
NA
NA
NA
NA
NA
<5
0.083 j
<0.05
GWA-44D
Deep
01/26/2018
<0.5
326
0.11
NA
241
<0.2
1.6
7.8
<0.05
<0.5
254
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-44D
Deep
04/26/2018
<0.5
342
<0.1
NA
194
<0.2
1.5
6
<0.05
<0.5
233
<0.1
0.22j,S1
<10
NA
NA
NA
NA
NA
NA
<5
0.053j
<0.05
GWA-44D
Deep
08/01/2018
<0.5
280
<0.1
NA
171
<0.2
3.9
6.8 S1
<0.05
<0.5
242
<0.1
0.22 j,B
<10
NA
NA
NA
NA
NA
NA
<5
0.053j
<0.05
GWA-44D
Deep
10/23/2018
0.17 j,S1
259
<0.1
NA
160
<0.2
1.5
6.2
<0.05
<0.5
214
<0.1
<0.3
9.8 j
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-44S
Shallow
01/26/2018
0.99 SI
154
<0.1
NA
18.8
<0.2
<0.5
8.2
<0.05
3.1
214
0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-44S
Shallow
04/26/2018
IA SI
80
<0.1
NA
30.7
<0.2
0.47 j
9.7
<0.05
5.4
202
0.048 j
0.37 SI
<10
NA
NA
NA
NA
NA
NA
<5
0.083 j
<0.05
GWA-445
Shallow
08/01/2018
1.6
<50
<0.1
NA
13.9
<0.2
0.87
3.1 S1
<0.05
3.4
218
0.11
0.31
<10
NA
NA
NA
NA
NA
NA
<5
0.091 j
<0.05
GWA-44S
Shallow
10/23/2018
1.4 SI
<50
<0.1
NA
9.7
<0.2
0.28 j
1.7
<0.05
3.1
206
0.1
0.26 j
<10
NA
NA
NA
NA
NA
NA
<5
0.069 j,M1
<0.05
GWA-47D
Deep
02/07/2018
0.8 B,S1
153
<0.1
NA
153
<0.2
<0.5
26.3
<0.05
<0.5
67.1
0.16
6
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-47D
Deep
05/07/2018
0.37 j,B
164
0.13
NA
146
<0.2
0.14 j
3.1
<0.05
<0.5
69
0.18
1.1
10.6 B
NA
NA
NA
NA
NA
NA
<5
<0.1 M1
<0.05
GWA-47D
Deep
08/03/2018
0.96
<50
0.046 j
NA
114
<0.2
0.091 j
1.1
<0.05
<0.5
64.5
0.13
0.058 j,B
8.3 j
NA
NA
NA
NA
NA
NA
<5
<0.1 MI
<0.05
GWA-47D
Deep
10/25/2018
IA SI
<50
<0.1
NA
89
0.13 j
<0.5
1.2
<0.05
<0.5
64.6
0.13
<0.3
9.4 j
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-48BR
Bedrock
02/02/2018
<0.5
1730
<0.1
NA
47.8
<0.2
<0.5
<0.5
<0.05
<0.5
57.1
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-48BR
Bedrock
05/07/2018
0.18 j,B
1570
<0.1
NA
43.6
<0.2
0.24 j
0.14 j
<0.05
<0.5
57.2
<0.1
0.62 B
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-48BR
Bedrock
08/07/2018
0.11 j
1420
<0.1
NA
44.1
<0.2
0.23 j
<0.5
<0.05
<0.5
61.4
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
0.051 j
<0.05
GWA-48BR
Bedrock
10/30/2018
0.23 j,S1
1820
<0.1
NA
49
0.09 j
0.24 j
0.68
<0.05
<0.5
62.7
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-51D
Deep
02/01/2018
28.7
378
0.21
NA
7840
<0.2
0.59
24.4
<0.05
1.6
209
0.28
<0.3
33.1
1.85 SI
3.45
5.3
<0.0005
<0.0005
NA
<5
<0.1
<0.05
GWA-51D
Deep
05/01/2018
26.3
38.6j
0.071j
NA
6700
<0.2
0.16j
16.5
<0.05
1.6
204
0.31
<0.3
28
2.08
4.25
6.33
0.00014j
0.00014j
0.00012j
<5
<0.1
<0.05
GWA-51D
Deep
08/01/2018
17.4
<50
0.099j
NA
7570
<0.2
0.36j
14.5
<0.05
1.7
227
0.27
<0.3
27.4
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-51D
Deep
11/02/2018
16.4
<50
<0.1
NA
8910
<0.2
0. 14 j,S1
16.7
<0.05
1.7
235
0.29
<0.3
40.2
NA
NA
NA
NA
NA
NA
<5
0.056 j,M1
<0.05
GWA-54BRO
Bedrock
01/29/2018
1.1
963
0.7
NA
81.1
<0.2
4.1
1.7 SI
<0.05
1.7
163
<0.1
<0.3
<10
0
1.01 B
1.01
0.0021
0.0021
NA
<5
<0.1
<0.05
GWA-54BRO
Bedrock
05/01/2018
0.34 j,S1
694
0.15
NA
62.2
<0.2
3
0.73 SI
<0.05
1.6
156
<0.1
<0.3
4.2 j
0.395 U
0.35 U
0.745 U
0.0021
0.0021
0.0015
<5
<0.1
0.036 j
GWA-54BRO
Bedrock
08/01/2018
0.27 j,S1
160
<0.1
NA
42.2
<0.2
2.6
0.68 B,S1
<0.05
1.6
167
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
0.045 j
GWA-54BRO
Bedrock
11/02/2018
0.48 j,S1
234
<0.1
NA
36.7
<0.2
2.1 S1
0.72 SI
<0.05
1.4
166
<0.1
0.081 j,S1
2.8 j
NA
NA
NA
NA
NA
NA
<5
<0.1
0.025 j
GWA-54D
Deep
01/29/2018
<0.5
2600
<0.1
NA
106
<0.2
20.1
0.65 SI
0.053
<0.5
212
<0.1
<0.3
<10
0.0728
0.534
0.6068
<0.0005
<0.0005
NA
<5
<0.1
0.067
GWA-54D
Deep
05/01/2018
0.2 j,S1
844
<0.1
NA
191
<0.2
4.6
0.94 S1
0.14
<0.5
220
<0.1
0.12j
<10
0.497
-0.039 U
0.497 U
0.00013j
0.00013j
0.00012j
<5
<0.1
0.18
GWA-54D
Deep
08/01/2018
<0.5
467
<0.1
NA
260
<0.2
17.2
0.75 B,S1
0.14
<0.5
227
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
0.07 j
0.18
GWA-54D
Deep
10/29/2018
<0.5
352
<0.1
NA
258
<0.2
3.7
<0.5
0.14
<0.5
217
<0.1
0.076j
<10
NA
NA
NA
NA
NA
NA
<5
0.055j
0.16
GWA-54S
Shallow
01/29/2018
0.99
<50
<0.1
NA
569
<0.2
<0.5
4.2
<0.05
<0.5
19.3
0.23
<0.3
12.5
0.813
0.806
1.619
<0.0005
<0.0005
NA
<5
<0.1
<0.05
GWA-54S
Shallow
05/01/2018
4.8
<50
0.067 j
NA
237
<0.2
<0.5
3.2
<0.05
<0.5
18.2
0.2
<0.3
14.4
0.614
0.204 U
0.818 U
0.000058 j
0.000058 j
<0.0005
<5
<0.1
<0.05
GWA-54S
Shallow
08/01/2018
4.1
<50
0.29
NA
168
<0.2
2.4
2.3 B,S1
<0.05
<0.5
19.1
0.16
0.09 j
17.2
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-54S
Shallow
10/29/2018
10.5
<50
0.13
NA
118
<0.2
0.58
2.1
<0.05
<0.5
19
0.15
<0.3
21.3
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-56D
Deep
01/26/2018
1.4 S1
1240
<0.1
NA
159
<0.2
0.91
15.9
<0.05
1.8
161
<0.1
<0.3
<10
1.5
1.06
2.56
<0.0005
<0.0005
NA
<5
<0.1
<0.05
GWA-56D
Deep
04/26/2018
1 SI
534
0.075 j,S1
NA
148
<0.2
0.4j
12.4
<0.05
1.9
152
<0.1
0. 17 j,S1
8.6j
0.961
2.44 B
3.4
0.00032j
0.00032j
0.0002j
<5
<0.1
<0.05
GWA-56D
Deep
07/31/2018
4.3
453
0.086j
NA
173
<0.2
7.2
35.5
<0.05
2.5
153
<0.1
0.43
18.8 B
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-56D
Deep
10/22/2018
2.8
414
<0.1
NA
133
<0.2
1.3
13.6
<0.05
2.3
153
<0.1
0.15 j,S1
9.8 j
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
GWA-56S
Shallow
01/26/2018
<0.5
1960
<0.1
NA
944
<0.2
<0.5
2.3
<0.05
1.3
69.2
<0.1
<0.3
<10
0.204
0.231
0.435
<0.0005
<0.0005
NA
<5
<0.1
<0.05
GWA-56S
Shallow
04/30/2018
0.41 j,S1
180
0.1
NA
199
<0.2
0.22j
2.4 S1
<0.05
1.8
63
0.12
0.31 SI
3.9j
0.513
0.413 U
0.926 U
0.000042j
0.000042j
0.000067j
<5
0.061j
<0.05
GWA-56S
Shallow
07/31/2018
0.59 S1
33.8 j
<0.1
NA
17.7
<0.2
0.26 j
0.65
<0.05
1.7
53.9
0.041 j
0.064 j
<10 P8
NA
NA
NA
NA
NA
NA
<5
0.052 j
<0.05
GWA-56S
Shallow
10/22/2018
IA SI
<50
<0.1
NA
13.7
<0.2
0.39 j
2
<0.05
1.6
58.1
0.044 j
0.12 j,S1
<10
NA
NA
NA
NA
NA
NA
<5
0.054 j
<0.05
IB-06D
Deep
11/01/2018
0.23j
1980
<0.1
NA
311
<0.2
0.33j
0.76
<0.05
<0.5
205
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
0.082j
<0.05
IB-065
Shallow
11/02/2018
0.22 j
686
<0.1
NA
5560 M1
<0.2
<0.5
8.3
<0.05
<0.5
336
0.04 j
<0.3
8.8 j
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
IB-07D
Deep
11/01/2018
<0.5
385
<0.1
NA
203
<0.2
2
2.7
<0.05
<0.5
123
<0.1
0.31
<10
NA
NA
NA
NA
NA
NA
<5
0.1
0.031j
IB-07S
Shallow
11/01/2018
0.34j
1730
<0.1
NA
2220
<0.2
0.89
35
<0.05
<0.5
286
0.19
0.17j
4j
NA
NA
NA
NA
NA
NA
<5
0.11 M1
<0.05
MW-02DA
Bedrock
04/27/2018
0.67 S1
140
<0.1
NA
343
<0.2
3.4
4.8
<0.05
<0.5
156
0.037 j
0.16 j,51
6.6 j
NA
NA
NA
NA
NA
NA
<5
0.08 j
0.027 j
MW-02DA
Bedrock
08/01/2018
0.11 j,S1
535
<0.1
NA
615
<0.2
4.2
3.7 S1
<0.05
<0.5
135
<0.1
<0.3
4.9 j
NA
NA
NA
NA
NA
NA
<5
0.11
<0.05
MW-02DA
Bedrock
10/23/2018
0.78 SI
1120
<0.1
NA
1250
<0.2
4.4
5.6
<0.05
<0.5
171
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
0.095j
0.034j
MW-08D
Deep
01/31/2018
<0.5
30500
<0.1
NA
4520
<0.2
<0.5
0.62
<0.05
<0.5
93.3
<0.1
<0.3
<10
2.56
2.04
4.6
<0.0005
<0.0005
NA
<5
<0.1
<0.05
MW-08D
Deep
04/30/2018
0.42 j,S1
32600
<0.1
NA
5010
<0.2
<0.5
0.26j,S1
<0.05
<0.5
98.4
<0.1
<0.3
<10
NA
NA
NA
<0.0005
<0.0005
<0.0005
<5
<0.1
0.051
Page 33 of 45

TABLE 3-3
2018 COMPREHENSIVE GROUNDWATER QUALITY DATA
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS LLC, MOORESBORO NC
Analytical Parameters
FIELD PARAMETERS
WATER QUALITY PARAMETERS
SELECTED 40CFR257 APPENDIX III CONSTITUENTS plus Sr
INORGANIC PARAMETERS (TOTAL CONCENTRATION)
pH
Water
Level
Temp
Spec
Cond
DO
ORP
Eh
Turbidity
Alkalinity
Bi-
carbonate
Alkalinity
Sulfide
Total
Organic
Carbon
Total
Suspended
Solids
Boron
Calcium
Chloride
Strontium
Sulfate
Total
Dissolved
Solids
Aluminum
Antimony
Arsenic
Barium
Beryllium
Cadmium
Chromium
(VI)
Chromium
Reporting Units
S.U.
ft
Deg C
umhos/cm
mg/L
mV
mV
NTUs
mg/L
mg/L
mg/L
mg/L
mg/L
ug/L
mg/L
mg/L
ug/L
mg/L
mg/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
15A NCAC 02L Standard
6.5-8.5
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
700
NE
250
NE
250
Soo
NE
1*
SO
700
4*
2
SO
10
Background Threshold Values (Shallow Flow Zone)
4.4-6.1
NE
NE
NE
NE
NE
NE
NE
13.67
14.42
0.1
1
NE
50
3.221
7.7
36.71
1.169
75.47
253
1
0.5
73.03
0.188
1
0.452
3.968
Background Threshold Values (Deep Flow Zone)
4.8-6.1
NE
NE
NE
NE
NE
NE
NE
19.74
18.13
0.1
1
NE
50
11
5.1
56.14
10
70.98
290
1
0.763
23
0.2
1
0.16
1.791
Background Threshold Values (Bedrock Flow Zone)
5.4-7.4
NE
NE
NE
NE
NE
NE
NE
I 53
68.82
0.1
1
NE
50
16
8.656
107.1.
15.1
1.20
208.2
1
1
19.33
1
1
0.12
3.567
Sample ID
Sample Location
Aquifer Name
Sample
Collection Date
Analytical Results
MW-08D
Deep
07/30/2018
5.9
9.55
31
367
0.40
-145
60
1.3
14.9
14.9
<0.1
<1
<2.5
131
15
57.3
101
53.8
221
<100
<0.5
0.059 j,S1
38.3
<0.1
<0.08
<0.025
0.22j
MW-08D
Deep
10/24/2018
6.0
10.24
19
359
0.40
-47
158
8.9
36
36
<0.1
<1
10.4
140
15.5
54.5
105
48.3
205
<100
<0.5
<0.1
40
0.064j
<0.08
<0.025
0.54
MW-08S
Shallow
01/31/2018
7.2
6.15
12
499
1.20
-53
152
7.4
177
177
<0.1
<1
2.8
217
72.4
36.6
141
50.9
276
<100
<0.5
0.36
35.1
<0.1
<0.08
<0.025
11.1
MW-08S
Shallow
04/30/2018
7.0
6.10
23
475
1.70
-96
109
1.9
169
169
<0.1 R1
0.66j
<5
141
67.7 M1
29.9
121
49.3
293
<100
<0.5
0.18 S1
35.2
<0.1
<0.08
<0.025
<0.5
MW-08S
Shallow
07/30/2018
6.8
6.26
31
604
0.60
-71
134
7.9
171
171
<0.1
0.53j
<2.5
253
82.7
46.3
140
77.6
389
<100
<0.5
0.39 S1
40.8
<0.1
<0.08
0.026 SI
1.2
MW-08S
Shallow
10/24/2018
6.8
6.26
21
554
0.70
-81
125
9.0
170
170
<0.1
<1
3.4
269
80.4
41.1
147
60.5
332
<100
<0.5
0.54
55
<0.1
<0.08
<0.025
0.25j
MW-10D
Deep
01/31/2018
5.3
28.04
7
84
2.40
232
437
0.6
10.3
10.3
<0.1
<1
<2.5
163
4.26
7.3
67
11.8
46
<100
<0.5
<0.1
24.9
<0.1
<0.08
0.35
<0.5
MW-10D
Deep
04/27/2018
4.9
26.86
18
81
1.90
301
506
1.2
7.4
7.4
<0.1
<1
<2.5
167
4.47
8.6 M1
46.9
14.6
59
75 j
<0.5
<0.1
26.6
0.091 j
0.035 j
0.069 SI
0.24 j,S1
MW-10D
Deep
07/30/2018
5.1
27.64
20
100
1.80
118
323
9.4
8.3
8.3
<0.1
<1
41
161
5.1
11.1
47.1
17.1
70
732
<0.5
0.17 S1
28.5
0.093j
0.031j
0.049 SI
0.85
MW-10D
Deep
10/24/2018
5.3
28.12
18
98
2.20
159
364
6.8
6
6
<0.1
<1
5.9
167
5.2
9.9
41.9
15.2
62
182
<0.5
0.067 j
25.3
0.11
<0.08
0.096
1.1
MW-10S
Shallow
01/31/2018
5.3
28.51
11
206
1.80
104
309
6.2
7
7
<0.1
<1
3.5
238
15.3
14
50.8
57.5
423
525
<0.5
0.51
40.3
0.14
<0.08
0.59
0.89 SI
MW-10S
Shallow
04/27/2018
5.1
27.40
21
199
2.10
90
295
2.1
8.5
8.5
<0.1
<1
<2.5
232
15.1
18
60.2
49.3
123
159
<0.5
0.42 S1
46.7
0.16
0.082
0.46 SI
0.93 SI
MW-10S
Shallow
07/30/2018
5.0
28.08
24
206
2.00
190
395
9.7
7.3
7.3
<0.1
<1
13.4 D6,S1
225
15.1
18.8
55.8
55.7
128
616
<0.5
0.85 SI
45.6
0.14 SI
0.086
0.76 SI
1 SI
MW-10S
Shallow
10/23/2018
5.0
28.28
17
204
2.30
118
323
5.9
6.2
6.2
<0.1
<1
6.1
228
14.9
16.6
52.4
57.2
123
430
<0.5
0.42
43.5
0.15
0.2
0.44
0.92 S1,B
MW-11BR0
Bedrock
05/07/2018
6.6
10.57
17
446
0.02
-39
166
1.0
NA
NA
NA
NA
NA
109
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
MW-11BR0
Bedrock
08/02/2018
6.6
9.35
22
447
0.20
-83
122
9.2
NA
NA
NA
NA
NA
112
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
MW-11BR0
Bedrock
10/25/2018
6.8
10.00
17
452
0.40
-67
139
9.1
176
176
<0.1
<1
19.6
125
68.5
27.1
121
8.9
269
352
0.13j
<0.1
3.6j
0.061j
<0.08
<0.025
1.1
MW-11DA
Deep
01/31/2018
7.0
32.28
11
1139
0.60
-89
116
7.7
107
107
<0.1
1.8
20.4
75.7
49
153
237
147
564
<100
<0.5
0.74
46.4
<0.1
<0.08
<0.025
3
MW-11DA
Deep
05/02/2018
7.0
32.35
19
856
0.60
-143
62
6.7
152
152
<0.1
1.8
24
66.3
36.6
110
177
78.5
442
<100
<0.5
IA S1
34.6
<0.1
<0.08
<0.025 P4,R0
1.5
MW-11DA
Deep
08/02/2018
6.9
31.18
21
555
2.40
53
258
2.7
149
149
<0.1
0.76j
3.8
81.4
26.5
58.2
127
42.2
319
72.8 j,S1
0.097j
0.25
21
<0.1
<0.08
0.14
0.57
MW-11DA
Deep
10/25/2018
6.7
30.77
16
459
0.20
-52
153
5.2
133
133
<0.1
1.5
3
78.9
23.7
39.2
105
35.6
271
<100
<0.5
0.25
19.9
<0.1
<0.08
<0.025
0.14 j,S1
MW-11S
Shallow
01/31/2018
5.3
27.62 Top of Pump
11
326
3.50
121
326
4.8
5.8
5.8
<0.1
<1
<2.5
750
32.6
61.8
59.8
35.1
205
243
<0.5
0.13
77.5
<0.1
<0.08
0.45
0.89 S1
MW-11S
Shallow
05/02/2018
5.1
27.41
18
329
3.10
13
218
5.1
4.4 j
4.4 j
<0.1
<1
<2.5
774
33.9
66.4
38.1
40.6
258 D6
744
<0.5
0.18 S1
81.7
0.12
<0.08
0.75 S1
6.2
MW-11S
Shallow
08/02/2018
5.1
26.96
24
379
2.50
391
596
5.7
3.8 j
3.8 j
<0.1
<1
<2.5
790
38.9
86.6
41.8
47.7
272
65.9 j,S1
<0.5
0.19
90.2
0.11
<0.08
2.2
30.5
MW-11S
Shallow
10/25/2018
5.4
27.35
16
382
3.60
147
352
6.2
5
5
<0.1
<1
<2.5
817
41.2
86.9
42.2
41.3
256
304
0.2 j
0.26
96
0.13
0.056 j
2.9
17.4
MW-20D
Deep
02/01/2018
6.4
7.13
13
344
0.30
20
225
9.8
53.1
53.1
<0.1
<1
4.5
580
30.4
50.7
158
27.1
194
<100
NA
NA
20.1
NA
NA
<0.025
NA
MW-20D
Deep
05/03/2018
6.5
6.80
20
263
1.40
-41
164
9.8
SOS
SOS
<0.1
1.2
10.6
393
37.3
22
173
14.8
204
331
<0.5
0.08j
16.5
<0.1
<0.08
<0.025
0.36 j,S1
MW-20D
Deep
08/06/2018
6.4
7.57
22
349
0.50
-174
31
5.5
43.4
43.4
<0.1
<1
3
597
30.6
58.3
143
26.2
204
<100
<0.5
0.22
19.4
<0.1
0.036j
<0.025
0.16j
MW-20D
Deep
10/24/2018
6.4
7.41
17
339
2.60
32
237
1.5
37
37
<0.1
<1
<5
600
31.2
24.6
128
3.9
208
<100
<0.5
0.21
26
0.014j
0.075j
<0.025
6.2
MW-20DR
Bedrock
01/31/2018
7.6
Artesian
12
466
0.20
-29
176
0.1
270
270
<0.1
1.9
<2.5
178
75.1
8.7
317
<1
286
<100
<0.5
<0.1
<5
<0.1
<0.08
<0.025
<0.5
MW-20DR
Bedrock
05/03/2018
7.1
Artesian
16
474
0.30
-87
118
1.0
272
272
<0.1
1.9
<2.6
180
78.9 M1
9.1
343
<1
294
<100
<0.5
<0.1
<5
<0.1
<0.08
<0.025
<0.5
MW-20DR
Bedrock
08/06/2018
7.1
0.00
20
486
0.20
-16
189
1.3
245
245
<0.1 M1
1.9
<2.5
196
76.6
9.3
347
<1
305
<100
<0.5
0.078j
<5
0.053j
<0.08
<0.025 M1,R1
<0.5
MW-20DR
Bedrock
10/24/2018
7.1
0.00
15
469
0.10
-35
170
0.0
247
247
<0.1
1.5
<2.5
176
74.5
8.5
335
<1
299
<100
<0.5
<0.1
<5
0.016j
<0.08
<0.025
0.18j
MW-21BR
Bedrock
01/31/2018
6.9
16.00
10
138
0.60
61
266
1.0
57.1
57.1
<0.1
<1
<5
<50
16.4
4.8
55.2
8.6
93
<100
<0.5
0.2
7.6
<0.1
<0.08
<0.025
<0.5
MW-21BR
Bedrock
05/01/2018
6.9
14.99
20
141
1.20
265
470
1.0
52.7
52.7
<0.1
<1
<2.5
<50
18.6
4.4
49.4
7
98
<100
<0.5
0.19
7.6
<0.1
<0.08
<0.025
0.2 j
MW-21BR
Bedrock
08/06/2018
6.8
14.95
25
139
0.80
41
246
1.4
51.3
51.3
<0.1
<1
<2.5
<50
18.2
4.9
56.2
7.7
97
<100
<0.5
0.22
8.2
<0.1
<0.08
0.046
<0.5
MW-21BR
Bedrock
10/25/2018
7.0
15.40
12
135
1.00
126
331
1.0
51
51
<0.1
<1
<2.5
<50
17
4.8
50.4
7.6
100
<100
<0.5
0.24
8.2
<0.1
<0.08
<0.025
0.097 j,S1
MW-21D
Deep
01/31/2018
5.3
8.47
13
44
6.40
250
455
7.9
<5
<5
<0.1
<1
6.8
<50
1.6
4.6
18.1
<1
<25
361
<0.5
<0.1
20.6
<0.1
<0.08
0.046 S1
<0.5
MW-21D
Deep
05/01/2018
5.0
6.35
19
47
7.20
167
372
8.8
2.8 j
2.8 j
<0.1
<1
6.3
<50
2.13
4.8
20.9
1.2
35
232
<0.5
0.097 j
24.5
0.11
<0.08
0.056 S1
0.47 j
MW-21D
Deep
08/06/2018
5.0
7.13
24
44
6.20
185
390
0.2
4.1 j
4.1 j
<0.1
<1
<2.5
<50
1.72
5.4
18.9
1
37
<100
<0.5
<0.1
18.2
0.1
<0.08
0.078
0.2 j
MW-21D
Deep
10/25/2018
4.8
7.40
16
43
7.70
133
338
0.0
2 j
2 j
<0.1
<1
<2.5
<50
1.7
5.5
18.1
0.99 j
37
143 SI
<0.5
0.28 S1
22.1
0.11
0.051 j
0.055
0.46 j,S1
MW-22BR
Bedrock
01/31/2018
6.7
44.97
13
99
2.10
21
226
2.9
33.5
33.5
<0.1
<1
<2.5
<50
9.64
1.5
50.3
6.3
75
<100
<0.5
0.17
11.5
<0.1
<0.08
0.2 S1
0.88 S1
MW-22BR
Bedrock
05/03/2018
6.2
33.25
20
79
3.10
103
308
6.0
20.5
20.5
<0.1
<1
<2.5
<50
7.09
2.5
42.8
11.2
57
<100
<0.5
0.1
10.8
<0.1
<0.08
0.032
0.44 j,S1
MW-22BR
Bedrock
08/06/2018
6.1
36.25
23
2
2.20
75
280
1.5
22.8
22.8
<0.1
<1
<2.5
<50
6.38
2.1
40.7
7.4
70
<100
<0.5
0.06 j
10
<0.1
<0.08
0.051
0.25 j
MW-22BR
Bedrock
10/30/2018
6.4
37.88
16
77
3.40
-9
196
1.0
24.5
24.5
<0.1
<1
<2.5
<50
7.2
1.8
43.1
6.1
75
<100
<0.5
0.086 j
9.3
<0.1
<0.08
0.081 S1
0.26 j
MW-22DR
Bedrock
01/31/2018
6.0
46.51
11
70
0.60
114
319
9.7
14.9
14.9
<0.1
<1
17.8 D6
<50
4.43
2.5
32.5
13.2
54
<100
<0.5
<0.1
6.4
<0.1
<0.08
<0.025
<0.5
MW-22DR
Bedrock
05/03/2018
5.7
32.25
29
46
4.67
201
406
8.4
7.8
7.8
<0.1
<1
<2.5
<50
2.9
2.6
19.8
2.7
32
<100
<0.5
0.05 j
9.2
<0.1
<0.08
0.032
0.19 j,S1
MW-22DR
Bedrock
08/08/2018
5.6
37.44
21
43
5.70
185
390
2.3
6.1
6.1
<0.1
<1
<2.5
<50
2.31
3
16.6
2.4
38 D6
51.5 j
<0.5
<0.1
12.5
<0.1
<0.08
0.04
0.34 j,B
MW-22DR
Bedrock
10/30/2018
6.5
39.22
18
92
2.00
-183
22
5.9
16.4
16.4
<0.1
<1
<2.5
<50
8.8
3.4
33.3
8
62
<100
<0.5
0.042 j
8.5
0.011 j
<0.08
0.06 S1
0.14 j
MW-23D
Deep
01/29/2018
7.3
17.80
16
958
0.30
-11
195
7.5
124
124
<0.1
<1
8.9
55.4
151
16.6
334
379
716
385
<0.5
1.1
45.7
<0.1
<0.08
<0.025
5.4
MW-23D
Deep
04/26/2018
6.5
15.88
17
764
0.60
-53
152
1.5
109
109
<0.1
0.51j
<2.5
38j
112
15.3
293
245
573
<100
<0.5
0.69 S1
33.1
0.07j
<0.08
0.031
0.62 S1
MW-23D
Deep
08/01/2018
7.0
17.94
21
919
0.40
2
207
2.3
116
116
<0.1
<1
3.3
48.3j
153 M1
17.4
336
377 M6
688
115
<0.5
0.96
44.3
<0.1
<0.08
<0.025
0.75
MW-23D
Deep
10/23/2018
6.8
17.64
16
899
1.30
-28
177
0.8
116
116
<0.1
<1
<2.5
44.7j
130
16.1
310
359
695
<100
<0.5
0.65
32.8
0.033j
<0.08
<0.025
0.32 j,B,SI
Page 34 of 45

TABLE 3-3
2018 COMPREHENSIVE GROUNDWATER QUALITY DATA
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS LLC, MOORESBORO NC
Analytical Parameters
INORGANIC PARAMETERS (TOTAL CONCENTRATION)
INORGANIC PARAMETERS (DISSOLVED CONCENTRATION WITH FILTER SIZE)
Cobalt
Copper
Iron
Lead
Lithium
Magnesium
Manganese
Mercury
Molybdenum
Nickel
Nitrate
+ Nitrite
Potassium
Selenium
Sodium
Thallium
Vanadium
Zinc
Aluminum
Antimony
Arsenic
Barium
Beryllium
Boron
Cadmium
Chromium
Cobalt
Reporting Units
ug/L
ug/L
ug/L
ug/L
ug/L
mg/L
ug/L
ug/L
ug/L
ug/L
mg-N/L
mg/L
ug/L
mg/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
15A NCAC 02L Standard
1*
1000
300
15
NE
NE
50
1
NE
100
NE
NE
20
NE
0.2*
0.3*
1000
NE
NE
NE
NE
NE
NE
NE
NE
NE
Background Threshold Values (Shallow Flow Zone)
10.65
6.569
765.3
1
NE
2.479
168.8
0.2
1
6.256
8.837
5
1
6.139
0.117
1.059
15
NE
NE
NE
NE
NE
NE
NE
NE
NE
Background Threshold Values (Deep Flow Zone)
9.041
9.453
559.7
1
NE
1.6
78.31
0.2
1
12.56
2.8
5
1
4.41
0.063
1.095
15.03
NE
NE
NE
NE
NE
NE
NE
NE
NE
Background Threshold Values (Bedrock Flow Zone)
1.497
5
6220
1
NE
1 2.328
89.4
0.2
1.716
5
1 0.92
5
1
1 7.42
0.1
0.37
10
NE
NE
NE
NE
NE
NE
NE
NE
NE
Sample ID
Sample Location
Aquifer Name
Sample
Collection Date
Analytical Results
MW-08D
Deep
07/30/2018
4.6
0.4 j,S1
35600 P8,51
0.048 j
7
4.71
5250
<0.2
<0.5
0.39 j
0.064
3.1 j
<0.5
13.5
<0.1
<0.3
<10
<100
<0.5
<0.1
38.6
0.072 j
129
<0.08
<0.5
4.7
MW-08D
Deep
10/24/2018
4.7
0.98 S1
36000
<0.1
6.6
4.8
5400
<0.2
<0.5
<0.5
0.051 SI
3.1 j
<0.5
13.9
<0.1
<0.3
<10
120
<0.5
<0.1
36.1
0.054 j
132
<0.08
0.46 j,S1
4.8
MW-08S
Shallow
O1/31/2018
4.1
<0.5
1850
<0.1
<0.5
11.5
2950
<0.2
<0.5
7.3
0.027
<5
<0.5
9.34
<0.1
2.9
<10
<100
<0.5
0.33
32.4
<0.1
218
<0.08
2
4.2
MW-08S
Shallow
04/30/2018
2.4
0.14 j,S1
586
0.045 j,S1
0.32 j
13.4
2260
<0.2
<0.5
0.85
0.012 j
3.2 j
0.19 j
7.28
<0.1
0.13 j,S1
<10
<100
<0.5
0.18
33.2
<0.1
134
<0.08
<0.5
2.3
MW-08S
Shallow
07/30/2018
3.6
0.56 SI
1180 RO
0.058 j
0.41 j
14.7
3200
<0.2
0.15 j,S1
1.9
0.075
3.06 j
0.17 j
9.62
<0.1
<0.3
3.2 j,B
<100
<0.5
0.29 SI
41.8
<0.1
258
<0.08
0.28 j,S1
3.7
MW-08S
Shallow
10/24/2018
5
0.48 j,S1
1390
<0.1
0.44 j,S1
14.1
3820
<0.2
0.11 j
1.4
0.045S1
3.1 j
<0.5
9.6
<0.1
<0.3
2.9 j
<100
<0.5
0.27
39.2
<0.1
251
<0.08
0.25 j,S1
3.4
MW-SOD
Deep
O1/31/2018
1.9
8.4
<50
<0.1
4.2
2.92
81.4
<0.2
<0.5
3
0.48
<5
0.83
<5
<0.1
<0.3
<10
<100
<0.5
<0.1
24
<0.1
170
<0.08
<0.5
2
MW-10D
Deep
04/27/2018
2.1
9.7
48 j
<0.1
2.4
3.25
86.5
<0.2
<0.5
2.3
0.5
<5
0.98
4.72 j
0.11
0.12 j,S1
5.6 j
<100
<0.5
0.15
22.6
0.14
150
<0.08
0.25 j,S1
2
MW-SOD
Deep
07/30/2018
1.8
12.8
1100 RO
0.29
2.3
3.75
99.4 51
<0.2
2.2 SI
2.8
0.47
<5
1.1
4.84 j
0.11
0.63 51
10.2 B
<100
<0.5
<0.1
24.6
0.093 j
163
0.045 j
0.3 j,S1
1.8
MW-10D
Deep
10/24/2018
1.8
9.3
229
0.16
2.1 j
3.7
96.5
<0.2
0.6
2.7
0.45
<5
1
4.9 j
0.094 j
0.26 j
8.2 j
<100
<0.5
<0.1
21.4
0.096 j
150
<0.08
0.27 j,S1
1.5
MW-SOS
Shallow
O1/31/2018
1.8
<0.5
318
0.11 SI
2
6.57
178
<0.2
<0.5
2.3
0.46
<5
3.4
6.47
0.16
<0.3
<10
102
<0.5
0.47
39.1
0.14
252
0.098
0.88
1.8
MW-10S
Shallow
04/27/2018
1.8
1 S1
99.1
0.072 j
2
6.86
198
0.15 j
<0.5
2.2
0.41
<5
3.5
6.76
0.14
0.13 j,S1
6.4 j
73.2 j
<0.5
0.36
38.7
0.17
208
0.088
1 SI
1.8
MW-SOS
Shallow
07/30/2018
1.9
2.2
555 RO
0.25 SI
2.1
6.89
196 SI
<0.2
1 SI
3.4
0.44
<5
3.8
6.78
0.14
0.38 51
11.7 B
74.4 j
<0.5
0.3 SI
41.2
0.2 SI
215
0.082
1A S1
1.9
MW-10S
Shallow
10/23/2018
1.8
1.3 SI
327
0.22
3.4 SI
6.9
190
0.093 j
0.34 j
2.1
0.47
<5
2.6
6.5
0.14
0.38
8.1 j
73.2 j
<0.5
0.29
40.3
0.12
215
0.2
0.52
1.7
MW-11BR0
Bedrock
05/07/2018
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
MW-11BR0
Bedrock
08/02/2018
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
MW-11BRO
Bedrock
10/25/2018
0.17
3.8
10600
0.27
7.3
5.4
1660
<0.2
<0.5
0.87
0.038 B,S1
3.4 j
<0.5
9.1
<0.1
0.31
9.2 j
<100
<0.5
<0.1
<5
0.051 j
119
<0.08
0.2 j
0.062 j,S1
MW-11DA
Deep
O1/31/2018
71.9
<0.5
12700
<0.1
16.9
5.16
383
<0.2
9.2
10.3
0.035
35.8
<0.5
116 M1
<0.1
<0.3
<10
<100
<0.5
0.55
44.1
<0.1
78.4
<0.08
<0.5
87.5
MW-11DA
Deep
05/02/2018
28.8
0.19 j
11400
0.039 j
11 SI
4.48
328
<0.2
8.4
1.3 SI
0.028
29.8
<0.5
95.2
<0.1
<0.3
<10
<100
0.12 j
1.1
33.6
<0.1
66.1
<0.08
0.36 j
39.5
MW-11DA
Deep
08/02/2018
82.8
5
762
0.28 B
10
3
177
<0.2
47
6.6
0.3
19
<0.5
64.2
<0.1
0.43
16.1
<100
<0.5
0.31
19.9
<0.1
79.8
0.041 j
0.39 j
212
MW-11DA
Deep
10/25/2018
58.1
2.7
1440
<0.1
10.5
2.8
214
<0.2
17.4
7
0.24
18.2
<0.5
52
<0.1
<0.3
12.9
<100
<0.5
0.2
20.4
<0.1
78.5
<0.08
19.5
62.1
MW-11S
Shallow
01/31/2018
0.84
<0.5
128
<0.1
1.8
6.95
1940
<0.2
<0.5
1.3 S1
0.37
<5
0.82
7.93
<0.1
<0.3
<10
<100
<0.5
0.12
63.6
<0.1
709
<0.08
0.93
1
MW-11S
Shallow
05/02/2018
1.3
0.4 j
492
0.1
2 SI
6.99
1870
<0.2
<0.5
5.3 S1
0.31
<5
0.88
8.56
0.083 j
0.12 j,B,SI
2.8 j
<100
<0.5
0.14
79.8
0.091 j
700
0.038 j
1.4
1.1
MW-11S
Shallow
08/02/2018
1.4
1
152
0.052 j,B
2
7.34
2020
<0.2
0.4 j
19.4
0.32
<5
0.86
8.43
0.074 j
<1.5 D3
<10
<100
<0.5
0.17
88
0.1
754
<0.08
25.5
1.4
MW-11S
Shallow
10/25/2018
1.6
0.84
258
0.12
2.5 j
7.8
2200
<0.2
0.29 j
14.2
0.31
<5
0.84
9.1
0.09 j
0.24 j
6.3 j
<100
<0.5
0.19
90
0.12
772
0.05 j
1.2
1.2
MW-20D
Deep
02/O1/2018
NA
NA
3460
NA
NA
9.44
300
<0.2
NA
NA
0.023
<5
NA
11.6
NA
NA
<10
<100
NA
NA
16.6
NA
557
NA
NA
NA
MW-20D
Deep
05/03/2018
1
<0.5
3720
0.1
2.9
8.3
307
<0.2
0.13 j
1.6
0.012 j
3.51 j
<0.5
10.7
0.042 j
0.22 j,S1
2.6 j
<100
<0.5
0.16
13.4
<0.1
360
<0.08
<0.5
1.1
MW-20D
Deep
08/06/2018
1.6
<0.5
6250
<0.1
2.7
9.6
306
<0.2
0.069 j
2.7
0.011 j
2.74 j
<0.5
9.99
0.054 j
<0.3
<10
<100
<0.5
0.2
19.2
<0.1
532
0.032 j
0.45 j
1.4
MW-20D
Deep
10/24/2018
1.5
0.39 j,S1
3000
<0.1
2.5
10.2
256
<0.2
0.17 j
8.4
0.038 SI
2.7 j
<0.5
10.7
0.083 j
0.15 j,BC
3.1 j
<100
<0.5
0.22
22.8
<0.1
553
0.054 j
4.2
1.5
MW-20DR
Bedrock
O1/31/2018
<0.1
<0.5
278
<0.1
8.7
8.95
550
<0.2
<0.5
<0.5
<0.02
<5
<0.5
12.9
<0.1
<0.3
<10
<100
<0.5
<0.1
<5
<0.1
158
<0.08
<0.5
<0.1
MW-20DR
Bedrock
05/03/2018
<0.1
0.49 j,S1
249
<0.1
8.3
9.38
592
<0.2
<0.5
0.41 j
<0.02
3.08 j
<0.5
13.5
<0.1
<0.3
<10
<100
<0.5
<0.1
<5
<0.1
161
<0.08
<0.5
<0.1
MW-20DR
Bedrock
08/06/2018
<0.1
0.29 j
236
<0.1
9
9.32
602
<0.2
0.089 j
0.87
<0.02
2.89 j
<0.5
12.7
<0.1
<0.3
<10
<100
<0.5
0.13
2.7 j
<0.1
179
<0.08
<0.5
<0.1
MW-20DR
Bedrock
10/24/2018
0.026 j
0.12 j,S1
293
<0.1
8.7
9.1
552
<0.2
<0.5
<0.5
<0.02
3 j
<0.5
13.1
<0.1
<0.3
<10
<100
<0.5
<0.1
<5
0.014 j
162
<0.08
<0.5
0.019 j
MW-21BR
Bedrock
O1/31/2018
<0.1
<0.5
<50
<0.1
4.1
1.77
30.9
<0.2
<0.5
0.75 SI
0.079
<5
<0.5
<5
<0.1
0.31
<10
<100
<0.5
0.22
7.9
<0.1
<50
<0.08
<0.5
<0.1
MW-21BR
Bedrock
05/O1/2018
0.053 j
0.15 j,S1
<50
<0.1
3.9
1.93
49.7
<0.2
0.28 j
1.3
0.085
3.7 j
<0.5
4.5 j
<0.1
0.38 51
<10
<100
<0.5
0.17
7.7
<0.1
<50
<0.08
<0.5
0.027 j
MW-21BR
Bedrock
08/06/2018
0.05 j
0.12 j
<50
<0.1
4
1.92
64
<0.2
0.28 j
1
0.16
3.53 j
<0.5
4.12 j
<0.1
0.17 j
<10
<100
<0.5
0.22
8.1
<0.1
<50
<0.08
0.18 j
0.043 j
MW-21BR
Bedrock
10/25/2018
0.085 j
0.18 j
<50
<0.1
3.9
1.8
72.5
<0.2
0.26 j
1.3
0.23
3.4 j
<0.5
4 j
<0.1
0.29 j
3.1 j
<100
<0.5
0.19
8.3
<0.1
<50
<0.08
<0.5
0.04 j,S1
MW-21D
Deep
O1/31/2018
0.76
0.58 S1
349
<0.1
1.5
1.26
10.4
<0.2
<0.5
1.6
1.3
<5
<0.5
<5
<0.1
<0.3
<10
<100
<0.5
<0.1
17.5
<0.1
<50
<0.08
<0.5
0.76
MW-21D
Deep
05/O1/2018
0.83
0.77 SI
130
0.49 SI
1.4
1.59
10
<0.2
<0.5
1.9
1.7
<5
<0.5
2.87 j
0.052 j
0.07 j,S1
3.1 j
<100
<0.5
<0.1
17.6
0.094 j
<50
0.029 j
0.15 j
0.75
MW-21D
Deep
08/06/2018
0.71
0.57
<50
<0.1
1.5
1.36
9.1
<0.2
<0.5
1.4
1.3
<5
<0.5
2.62 j
0.053 j
<0.3
3.5 j
<100
<0.5
<0.1
16.6
0.081 j
<50
<0.08
<0.5
0.7
MW-21D
Deep
10/25/2018
0.66
1.6 S1
110 Sl
0.3 S1
1.6 j
1.3
9.9
<0.2
<0.5
1.8
1.3
<5
<0.5
2.6 j
0.056 j
0.12 j
10A S1
<100
<0.5
<0.1
17.4
0.082 j
<50
<0.08
0.16 j
0.6
MW-22BR
Bedrock
O1/31/2018
0.19
<0.5
119
<0.1
2.6
1.21
47.2
<0.2
0.78
1.6
0.99
<5
<0.5
<5
<0.1
1.5
<10
<100
<0.5
0.15
11.1
<0.1
<50
<0.08
<0.5
0.31
MW-22BR
Bedrock
05/03/2018
0.85
0.16 j,S1
327
<0.1
3.1
1.62
54.8
<0.2
0.22 j
3.6
0.26
2.54 j
0.2 j
4.54 j
<0.1
0.12 j,S1
<10
<100
<0.5
0.062 j
10.3
<0.1
<50
<0.08
0.23 j,S1
0.73
MW-22BR
Bedrock
08/06/2018
2
0.58
559
0.058 j
3
1.36
49.2
<0.2
1.2
5.7
0.76
<5
<0.5
4.21 j
<0.1
0.12 j
2.7 j,B
<100
<0.5
<0.1
9.5
<0.1
<50
<0.08
0.19 j
1.8
MW-22BR
Bedrock
1O/30/2018
0.78
0.37 j
493
<0.1
2.2 j
1.4
40.1
<0.2
0.47 j
2
1.1
<5
<0.5
4.7 j
<0.1
0.34
4.4 j
<100
<0.5
0.07 j,B
9.4
<0.1
<50
<0.08
0.18 j,S1
0.74
MW-22DR
Bedrock
01/31/2018
1.2
<0.5
1580
<0.1
2.6
1.34
84.5
<0.2
<0.5
3.9
0.075
<5
<0.5
<5
<0.1
<0.3
<10
<100
<0.5
<0.1
6.6
<0.1
<50
<0.08
<0.5
1.2
MW-22DR
Bedrock
05/03/2018
1.2
0.66 SI
798
<0.1
2.3
0.962
47.2
<0.2
<0.5
3.3
0.93
<5
<0.5
2.72 j
0.055 j
<0.3
5.7 j
<100
<0.5
<0.1
9
<0.1
<50
<0.08
0.26 j,S1
1.2
MW-22DR
Bedrock
08/08/2018
1.3
0.78
469
0.047 j
2.3
1.02
39.6
<0.2
0.099 j
3.4
1.2
<5
<0.5
2.58 j
0.073 j
<0.3
7.2 j,B
<100
<0.5
0.096 j
11.4
0.037 j
<50
<0.08
0.18 j
1.2
MW-22DR
Bedrock
1O/30/2018
1
0.23 j
418
<0.1
1.9 j
0.97
51.8
<0.2
0.41 j
3.3
0.87
<5
<0.5
3.8 j
0.044 j
<0.3
4 j
<100
<0.5
<0.1
9.3
0.01 j
<50
<0.08
0.11 j,S1
1.2
MW-23D
Deep
01/29/2018
0.33
<0.5
1520
<0.1
21.1
23.1
667
<0.2
2.2
7.2
<0.02
14.8
<0.5
14.6
<0.1
<0.3
<10
116
<0.5
0.9
39.8
<0.1
<50
<0.08
1.9
0.31
MW-23D
Deep
04/26/2018
1.7
0.19 3,51
939
0.033 j
18.9
18.6
605
<0.2
1.4
21.2
0.049
11.6
0.6
12
<0.1
0.079 j,SI
<10
<100
<0.5
0.57 S1
30
0.053 j
30.7 j
<0.08
0.35 j,S1
1.8
MW-23D
Deep
08/01/2018
0.22
<0.5
1090
<0.1
19.1
22
694
<0.2
2
5.4
<0.02
15.5
<0.5
15
<0.1
<0.3
<10
<100
<0.5
0.68
32.6
<0.1
44.9 j
<0.08
0.61 SI
0.23
MW-23D
Deep
10/23/2018
0.21
0.45 j,S1
707
<0.1
19.1
19.7
563
1 <0.2
2.2
4.9
<0.02
13.1
<0.5
13.1
<0.1
<0.3
<10
<100
<0.5
0.61
33.4
0.025 j
46.6 j
<0.08
1.1
0.22
Page 35 of 45

TABLE 3-3
2018 COMPREHENSIVE GROUNDWATER QUALITY DATA
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS LLC, MOORESBORO NC
Analytical Parameters
INORGANIC PARAMETERS (DISSOLVED CONCENTRATION WITH FILTER SIZE)
RADIONUCLIDES
OTHER PARAMETERS
Copper
Iron
Lead
Lithium
Manganese
Mercury
Molybdenum
Nickel
Phosphorus
Selenium
Strontium
Thallium
Vanadium
Zinc
Radium-226
Radium-228
Total
Radium
Uranium-238
Total Uranium
Uranium-238
(Dissolved)
Carbonate
Alkalinity
Fluoride
Phosphorus
Reporting Units
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
mg/L
ug/L
ug/L
ug/L
ug/L
ug/L
pCi/L
pCi/L
pCi/L
ug/mL
ug/mL
ug/mL
mg/L
mg/L
mg/L
15A NCAC 02L Standard
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
5^
NE
0.03^
NE
NE
2
NE
Background Threshold Values (Shallow Flow Zone)
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
2.58
NE
0.0005
NE
5
NE
NE
Background Threshold Values (Deep Flow Zone)
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
1.51
NE
0.0005
NE
5
NE
NE
Background Threshold Values (Bedrock Flow Zone)
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
3.1
NE
0.0005
NE
5
NE
NE
Sample ID
Sample Location
Aquifer Name
Sample
Collection Date
Analytical Results
MW-08D
Deep
07/30/2018
0.35 j,B,SI
33800
<0.1
NA
5170
<0.2
<0.5
0.46 j,S1
0.033 j
<0.5
101
<0.1
0.087 j,S1
<10
NA
NA
NA
NA
NA
NA
<5
0.053 j
0.039 j
MW-08D
Deep
10/24/2018
0.2 j,S1
32600
<0.1
NA
5180
<0.2
<0.5
<0.5
0.039 j
<0.5
95.2
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
0.049 j
MW-08S
Shallow
01/31/2018
<0.5
1290
<0.1
NA
2530
<0.2
<0.5
6.8
<0.05
<0.5
147
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
MW-08S
Shallow
04/30/2018
0.4 j,S1
470
<0.1
NA
2160
<0.2
<0.5
0.87 SI
<0.05
<0.5
115
<0.1
<0.3
7.2 j
0.264 U
0.699 U
0.963 U
0.00023 j
0.00023 j
0.00023 j
<5
<0.1
<0.05
MW-08S
Shallow
07/30/2018
0.63 B,S1
987
<0.1
NA
3180
<0.2
0.096 j,S1
2
<0.05
<0.5
138
<0.1
0.086 j,S1
3.3 j
0.105 U
0.695 U
0.8 U
0.00023 j
0.00023 j
0.00022 j
<5
<0.1
<0.05
MW-08S
Shallow
10/24/2018
0.25 j,S1
785
<0.1
NA
2760
<0.2
<0.5
1.5
<0.05
<0.5
133
<0.1
<0.3
<10
0.777 U
0.462 U
1.24 U
NA
0.00024 j
NA
<5
<0.1
<0.05
MW-SOD
Deep
01/31/2018
8 S1
<50
<0.1
NA
70.3
<0.2
<0.5
3.5
<0.05
0.95
59.8
0.11
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
MW-10D
Deep
04/27/2018
12.9
<50
0.14
NA
76.2
<0.2
<0.5
2.3
<0.05
0.69
44.4
0.1
0.096 j,S1
6 j
NA
NA
NA
NA
NA
NA
<5
<0.1 M1
<0.05
MW-SOD
Deep
07/30/2018
29.9
<50
0.14 SI
NA
104
<0.2
7.8
3.3
<0.05
0.98
49.4
0.1
0.096 j,S1
24.3
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
MW-10D
Deep
10/24/2018
8.1
<50
<0.1
NA
87.4
<0.2
0.45 j
2.5
<0.05
0.86
38.1
0.084 j
<0.3
13.1 S3
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
MW-SOS
Shallow
01/31/2018
1.2 SI
<50
<0.1
NA
158
<0.2
<0.5
2.7
<0.05
3.3
49.1
0.15
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
MW-10S
Shallow
04/27/2018
1.6 SI
<50
0.055j
NA
173
0.09j
<0.5
2.3
<0.05
4.4
49.3
0.13
0.099 j,S1
6.8j
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
MW-SOS
Shallow
07/30/2018
3.9 B,S1
<50
0.064 j,S1
NA
180
<0.2
0.93 SI
2.7
<0.05
3.1
53.6
0.16
<0.3
8.5 j
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
MW-10S
Shallow
10/23/2018
IA SI
<50
<0.1
NA
177
0.1 j
0.2 j
1.9
<0.05
2.6
49.8
0.13
<0.3
6.4 j
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
MW-11BRO
Bedrock
05/07/2018
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
MW-11BR0
Bedrock
08/02/2018
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
MW-11BRO
Bedrock
10/25/2018
1.5
9910
<0.1
NA
1530
<0.2
<0.5
<0.5
<0.05
<0.5
117
<0.1
0.085j
2.8j
NA
NA
NA
NA
NA
NA
<5
0.05j
<0.05
MW-11DA
Deep
01/31/2018
<0.5
7950
<0.1
NA
326
<0.2
8.7
12.2
<0.05
<0.5
253
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
0.34
<0.05
MW-11DA
Deep
05/02/2018
0.12j
10200
<0.1
NA
318
<0.2
9
6
<0.05
<0.5
174
<0.1
0.087 j,B
2.8j
NA
NA
NA
NA
NA
NA
<5
0.48
<0.05
MW-11DA
Deep
08/02/2018
0.94 S1
829
0.27 S1
NA
191
<0.2
34.6
9.7
<0.05
<0.5
109
<0.1
0.19j
10.2
NA
NA
NA
NA
NA
NA
<5
0.41
<0.05
MW-11DA
Deep
10/25/2018
2.8
642
<0.1
NA
205
<0.2
14.7
29.4
<0.05
<0.5
97.4
<0.1
0.13 j
9.2 j
NA
NA
NA
NA
NA
NA
<5
0.4
<0.05
MW-11S
Shallow
01/31/2018
0.7 S3
<50
<0.1
NA
1660
<0.2
<0.5
1.4
<0.05
0.74
61.7
<0.1
<0.3
<10
0.609
0.315
0.924
<0.0005
<0.0005
NA
<5
<0.1
<0.05
MW-11S
Shallow
05/02/2018
2.7
<50
<0.1
NA
1880
<0.2
<0.5
1.8
<0.05
0.96
39.7
0.087 j
<0.3
3.4 j
-0.207 U
0.309 U
0.309 U
<0.0005
<0.0005
<0.0005
<5
<0.1
<0.05
MW-11S
Shallow
08/02/2018
1.7 SI
128
<0.1
NA
1960
<0.2
0.16j
21.4
0.065
0.78
40.9
0.064j
<1.5 D3
<10
0 U
-0.0194 U
0 U
<0.0005
<0.0005
<0.0005
<5
<0.1
<0.05
MW-11S
Shallow
10/25/2018
2.4
<50
<0.1
NA
1940
<0.2
<0.5
2.1
<0.05
0.81
40.3
0.077 j
<0.3
13.9
0.751 U
0.427 U
1.18 U
NA
<0.0005
NA
<5
<0.1
<0.05
MW-20D
Deep
02/01/2018
NA
2700
NA
NA
261
<0.2
NA
NA
<0.05
NA
127
NA
NA
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
MW-20D
Deep
05/03/2018
0.71
2830
<0.1
NA
193
<0.2
<0.5
2.4
<0.05
0.17j
114
0.049j
<0.3
3.1j
NA
NA
NA
NA
NA
NA
<5
0.085j
0.028 j,S1
MW-20D
Deep
08/06/2018
0.14j
4640
<0.1
NA
253
<0.2
0.1j
4
<0.05
<0.5
132
0.06j
<0.3
2.9j
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
MW-20D
Deep
10/24/2018
0.22 j,S1
2680
<0.1
NA
239
<0.2
0.22j
15.4
<0.05
<0.5
117
0.079j
<0.3
3.1 j,S1
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
MW-20DR
Bedrock
01/31/2018
<0.5
240
<0.1
NA
501
<0.2
<0.5
1.1
<0.05
<0.5
300
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
MW-20DR
Bedrock
05/03/2018
<0.5
220
<0.1
NA
536
<0.2
<0.5
0.45 j
<0.05
<0.5
309
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
0.1
<0.05
MW-20DR
Bedrock
08/06/2018
0.41 j
234
<0.1
NA
538
<0.2
0.18 j
0.42 j
<0.05
<0.5
303
<0.1
0.1 j
3.4 j
NA
NA
NA
NA
NA
NA
<5
0.098 j
<0.05
MW-20DR
Bedrock
10/24/2018
<0.5
273
<0.1
NA
519
<0.2
<0.5
<0.5
<0.05
<0.5
302
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
0.095 j
<0.05
MW-21BR
Bedrock
01/31/2018
<0.5
<50
<0.1
NA
27.2
<0.2
<0.5
0.84
<0.05
<0.5
51.7
<0.1
0.33
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
MW-21BR
Bedrock
05/01/2018
<0.5
<50
<0.1
NA
46.5
<0.2
0.27 j
IA SI
<0.05
<0.5
51.9
<0.1
0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
MW-21BR
Bedrock
08/06/2018
0.49 j
<50
<0.1
NA
62
<0.2
0.34 j
1.2
<0.05
<0.5
50.6
<0.1
0.36
4.2 j
NA
NA
NA
NA
NA
NA
<5
0.054 j
<0.05
MW-21BR
Bedrock
10/25/2018
0.28 j,S1
<50
<0.1
NA
57.6
<0.2
0.27 j
1.2
<0.05
<0.5
51.8
<0.1
0.31
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
MW-21D
Deep
01/31/2018
0.88 S3
<50
<0.1
NA
7.7
<0.2
<0.5
1.6
<0.05
<0.5
16.6
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
MW-21D
Deep
05/01/2018
0.84 S1
<50
0.038 j
NA
9.3
<0.2
<0.5
1.6
<0.05
<0.5
19.8
0.057 j
<0.3
3.6 j
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
MW-21D
Deep
08/06/2018
0.83
129
<0.1
NA
11.5
<0.2
<0.5
1.5
<0.05
<0.5
17
0.056 j
0.13 j
4.2 j
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
MW-21D
Deep
10/25/2018
1 Sl
<50
<0.1
NA
8.4
<0.2
<0.5
1.5
<0.05
<0.5
17.4
0.047 j
<0.3
3 j
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
MW-22BR
Bedrock
01/31/2018
<0.5
<50
<0.1
NA
44
<0.2
0.71
1.6
<0.05
<0.5
41.6
<0.1
1.8
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
MW-22BR
Bedrock
05/03/2018
0.28 j
138
<0.1
NA
49.8
<0.2
0.17 j
3.4
<0.05
0.17 j
39.1
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
MW-22BR
Bedrock
08/06/2018
0.19 j
335
<0.1
NA
44.5
<0.2
1.1
5.3
<0.05
<0.5
37.6
<0.1
0.1 j
3.2 j
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
MW-22BR
Bedrock
10/30/2018
<0.5
375
<0.1
NA
35.9
<0.2
0.41 j
1.9
<0.05
<0.5
41.2
<0.1
0.29 j
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
MW-22DR
Bedrock
01/31/2018
<0.5
391
<0.1
NA
77
<0.2
<0.5
3.8
<0.05
<0.5
30.8
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
MW-22DR
Bedrock
05/03/2018
3.3
<50
<0.1
NA
44.7
<0.2
<0.5
3.1
<0.05
<0.5
18.4
0.061 j
<0.3
9.4 j,B
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
MW-22DR
Bedrock
08/08/2018
0.78
<50
<0.1
NA
35.2
<0.2
<0.5
3.3
<0.05
<0.5
15.3
0.068 j
<0.3
4.5 j
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
MW-22DR
Bedrock
10/30/2018
0.41 j,S1
100
<0.1
NA
44.2
<0.2
0.27 j
4
<0.05
<0.5
29.1
0.042 j
<0.3
8.6 j,S1
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
MW-23D
Deep
01/29/2018
0.51
1070
<0.1 B
NA
663
<0.2
2.1
7
<0.05
<0.5
335
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
MW-23D
Deep
04/26/2018
0.99 S1
820
<0.1
NA
533
<0.2
1.5
21.9
<0.05
0.52
282
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
MW-23D
Deep
08/01/2018
0.64 SI
734
<0.1
NA
569
<0.2
1.9
5.6 SI
<0.05
<0.5
314
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
0.062j
<0.05
MW-23D
Deep
10/23/2018
0.43j,S1
737
<0.1
NA
596
<0.2
2.1
5.4
1 <0.05
<0.5
295
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
0.062j
<0.05
Page 36 of 45

TABLE 3-3
2018 COMPREHENSIVE GROUNDWATER QUALITY DATA
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS LLC, MOORESBORO NC
Analytical Parameters
FIELD PARAMETERS
WATER QUALITY PARAMETERS
SELECTED 40CFR257 APPENDIX III CONSTITUENTS plus Sr
INORGANIC PARAMETERS (TOTAL CONCENTRATION)
pH
Water
Level
Temp
Spec
Cond
DO
ORP
Eh
Turbidity
Alkalinity
Bi-
carbonate
Alkalinity
Sulfide
Total
Organic
Carbon
Total
Suspended
Solids
Boron
Calcium
Chloride
Strontium
Sulfate
Total
Dissolved
Solids
Aluminum
Antimony
Arsenic
Barium
Beryllium
Cadmium
Chromium
(VI)
Chromium
Reporting Units
S.U.
ft
Deg C
umhos/cm
mg/L
mV
mV
NTUs
mg/L
mg/L
mg/L
mg/L
mg/L
ug/L
mg/L
mg/L
ug/L
mg/L
mg/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
15A NCAC 02L Standard
6.5-8.5
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
700
NE
250
NE
250
Soo
NE
1*
10
700
4*
2
10
10
Background Threshold Values (Shallow Flow Zone)
4.4-6.1
NE
NE
NE
NE
NE
NE
NE
13.67
14.42
0.1
1
NE
50
3.221
7.7
36.71
1.169
75.47
253
1
0.5
73.03
0.188
1
0.452
3.968
Background Threshold Values (Deep Flow Zone)
4.8-6.1
NE
NE
NE
NE
NE
NE
NE
19.74
18.13
0.1
1
NE
50
11
5.1
56.14
10
70.98
290
1
0.763
23
0.2
1
0.16
1.791
Background Threshold Values (Bedrock Flow Zone)
5.4-7.4
NE
NE
NE
NE
NE
NE
NE
I 53
68.82
0.1
1
NE
50
16
8.656
107.1.
15.1
1.20
208.2
1
1
19.33
1
1
0.12
3.567
Sample ID
Sample Location
Aquifer Name
Sample
Collection Date
Analytical Results
MW-23DR
Bedrock
01/29/2018
7.3
16.93
16
233
0.30
-76
129
2.9
93.3
93.3
<0.1
<1
<5
<50
28.9
4.8
104
24
145
<100
<0.5
0.25 SI
36.7
<0.1
<0.08
<0.025
<0.5
MW-23DR
Bedrock
04/26/2018
7.2
14.91
17
234
0.40
-111
94
0.2
88.4
88.4
<0.1
<1
<2.5
<50
29.4
5.4
99.2
22.9
160
<100
<0.5
0.26 Sl
34.9
<0.1
<0.08
<0.025
0.13 j,S1
MW-23DR
Bedrock
08/01/2018
7.3
16.75
19
235
0.20
-106
100
0.4
89.8
89.8
<0.1
<1
<2.5
<50
29.6
5.7
105
27.1
162
<100
<0.5
0.25
35.9
<0.1
<0.08
<0.025
<0.5
MW-23DR
Bedrock
10/23/2018
7.0
16.41
17
233
1.70
-91
115
1.5
88.4
88.4
<0.1
<1
<2.5
<50
28.9
5.3
104
25.3
167
<100
<0.5
0.23
36.3
0.01 j
<0.08
<0.025
0.36 j,B,SI
MW-23S
Shallow
01/29/2018
4.9
16.73
18
441
0.80
537
742
4.3
8.4
8.4
<0.1
<1
<2.5
51.9
41.8
14
167
170
291
197
<0.5
0.14 S1
59.8
1.5
0.19
2.5 M6
3.2
MW-23S
Shallow
04/26/2018
5.0
14.60
17
120
3.20
-49
156
3.9
10.2
10.2
<0.1
<1
<2.5
<50
7.61
3.8
41.9
25.9
87
214
<0.5
0.092 Sl
46
0.41
0.05 j
1.5
1.8 SS
MW-23S
Shallow
08/01/2018
4.8
16.88
22
461
1.60
69
274
1.9
8.8
8.8
<0.1
0.62 j
<2.5
31.7 j
38
15.6
165
153
273
509
<0.5
0.1
54
0.9
0.18
3
2.4
MW-23S
Shallow
10/23/2018
4.5
16.51
16
419
0.80
184
389
3.1
5.4
5.4
<0.1
0.71 j
<2.5
34.6 j
36.5
14.4
139
158
267
98.1 j
<0.5
0.16
46.6
1.2
0.19
2.4 M6
4.8
MW-24D
Deep
01/29/2018
5.3
21.70
15
53
6.60
43
248
0.1
<5
<5
<0.1
<1
<2.5
<50
1.82
4.2
25.3
<1
50
<100
<0.5
0.14 Sl
21.4
<0.1
<0.08
0.034 SI
<0.5
MW-24D
Deep
04/27/2018
5.4
16.71
17
51
6.10
360
565
0.7
3.6 j
3.6 j
<0.1
<1
<2.5
<50
1.83
4
26.3
<1
48
<100
<0.5
0.14 Sl
21.9
<0.1
<0.08
<0.025
0.22 j,S1
MW-24D
Deep
08/07/2018
5.0
19.31
18
52
6.80
158
363
0.0
4 j
4 j
<0.1
<1
<2.5
<50
1.94
4.3
27.5
1.4
45
<100
<0.5
0.13
23.1
0.042 j
<0.08
0.056
<0.5
MW-24D
Deep
11/02/2018
4.8
19.53
17
53
7.20
159
364
1.4
3.4 j
3.4 j
<0.1
<1
<2.5
<50
2
4.5
26.5
<1
46
<100
<0.5
0.2
22
0.037 j
<0.08
0.088
0.22 j,S1
MW-24DR
Bedrock
01/29/2018
7.3
17.62
17
129
0.40
-124
81
0.8
55
55
<0.1
<1
<2.5
<50
15.6
1.4
79.2
11.3
106
<100
<0.5
<0.1
<5
<0.1
<0.08
<0.025
<0.5
MW-24DR
Bedrock
04/27/2018
7.2
13.12
17
134
1.60
-65
140
1.7
51.5
51.5
<0.1
<1
<2.5
<50
15.4
1.4
81.1
10
111
<100
<0.5
<0.1
3.7 j
<0.1
<0.08
<0.025
<0.5
MW-24DR
Bedrock
08/07/2018
7.1
14.80
19
132
0.70
-79
126
0.3
52.3
52.3
<0.1
<1
<2.5
<50
15.8
1.5
80.6
10.7
120
<100
<0.5
<0.1
4 j
<0.1
<0.08
<0.025
0.22 j
MW-24DR
Bedrock
11/02/2018
7.2
14.95
16
133
0.20
-38
167
1.8
57.5
57.5
<0.1
<1
<2.5
<50
15.7
1.5
78.5
10.5
116
<100
<0.5
<0.1
3.4 j
<0.1
<0.08
<0.025
0.15 j,S1
MW-25DR
Bedrock
02/01/2018
7.9
11.37
15
174
2.30
60
265
0.5
85.5
85.5
<0.1
<1 Ml,RS
<2.5
<50
25.9
1.4
109
4.1
119
<100
NA
NA
<5
NA
NA
<0.025
NA
MW-25DR
Bedrock
05/07/2018
6.2
10.72
19
69
6.30
118
323
0.0
29.2
29.2
<0.1
<1
<2.5
<50
7.99
1.9
29.3
1.3
59
<100
<0.5
0.38
<5
<0.1
<0.08
0.3 Sl
0.35 j,Sl
MW-25DR
Bedrock
08/06/2018
6.3
10.75
20
SOS
4.00
135
340
0.0
42.6
42.6
<0.1
<1
<2.5
<50
12.5
2.1
48.4
2.8
74
<100
<0.5
0.6
<5
0.042 j
<0.08
0.4
0.46 j
MW-25DR
Bedrock
11/01/2018
5.9
10.55
17
78
5.10
125
330
2.7
37.3
37.3
<0.1
<1
<5
<50
8.8
2
35.8
1.6
67 D6
98.4 j
<0.5
0.51
2.9 j
0.021 j
<0.08
0.42
0.95 B,BC,SS
MW-30D
Deep
01/26/2018
8.8
43.45
16
140
0.90
126
331
0.6
40.7
40.7
<0.1
<1
<2.6
<50
11.5
7.5
67.9
16.9
106
<100
<0.5
1.4
44.4
<0.1
<0.08
<0.025
<0.5
MW-30D
Deep
04/30/2018
8.5
43.22
21
144
0.74
91
296
0.4
42.5
42.5
<0.1
<1
<2.5
<50
12.6
7.5
61.3
15.7
103
<100
<0.5
1.1
43.5
<0.1
<0.08
0.041 S1
0.26 j,S1
MW-30D
Deep
07/31/2018
8.1
43.59
26
143
0.50
44
249
1.7
39.7
39.7
<0.1
<1
<2.5
<50
12.3
7.7
61.7
15.2
114
62.7 j
<0.5
1.6 Sl
50.1
<0.1
<0.08
0.057 SI
0.29 j,S1
MW-30D
Deep
10/25/2018
8.1
43.79
12
139
1.00
-58
148
1.7
40.7
40.7
<0.1
<1
<2.5
<50
11.4
7.5
55.3
15.2
SOS
<100
0.11 j
2
44.4
<0.1
<0.08
0.22 Ml
0.35 j,S1
MW-30DA
Deep
01/26/2018
7.3
48.52
17
147
0.10
-48
157
5.1
57.9
57.9
<0.1
1.7
4.8
<50
13.9
7.1
69.4
5.6
104
<100
<0.5
0.39
22
<0.1
<0.08
<0.025
2.3 S1
MW-30DA
Deep
04/27/2018
6.8
46.55
18
137
0.20
-39
166
0.6
49.3
49.3
<0.1
0.66 j
2.7
<50
12.2
7.2
70.5
9
105
<100
<0.5
0.1 Sl
25.7
<0.1
<0.08
<0.025
0.28 j,S1
MW-30DA
Deep
07/31/2018
6.5
46.89
24
140
1.20
81
286
2.0
36.2
36.2
<0.1
<1
2.6
<50
9.13
7.6
63.7
11.4
190
81.5 j
<0.5
0.16 S1
25.4
<0.1
<0.08
<0.025
0.21 j,S1
MW-30DA
Deep
10/25/2018
6.7
47.08
14
117
0.50
-34
171
0.2
37.2
37.2
<0.1
<1
<2.5
<50
8.4
7.3
58.7
11.6
86
<100
<0.5
0.09 j
24.3
<0.1
<0.08
<0.025
0.091 j,S1
MW-30S
Shallow
01/31/2018
5.4
Top of Pump
14
37
5.70
25
230
9.8
<5
<5
<0.1
<1
<2.5
<50
1.18
4.9
10.9
<1
26
364
<0.5
<0.1
33.8
<0.1
<0.08
3.7
2.9 Sl
MW-30S
Shallow
04/27/2018
5.3
43.51
22
36
4.40
173
378
9.8
3.4 j
3.4 j
<0.1
<1
<2.5
<50
1.15
3.9
10.7
<1
26
124
<0.5
<0.1
35
0.13
<0.08
4.1
5.5
MW-30S
Shallow
07/31/2018
5.1
43.17
21
34
5.40
237
442
9.0
4 j
4 j
<0.1
<1
<2.5
<50
1.08
4.1
9.8
<1
34
158
<0.5
0.24 SI
34.2
0.1
<0.08
2.7
3
MW-30S
Shallow
10/25/2018
5.5
43.37
14
33
5.70
120
325
2.8
4.5 j
4.5 j
<0.1
<1
<2.5
<50
1.1
4.2
9.1
<1
29
51.3 j
<0.5
<0.1
32.3
0.1
<0.08
3
2.4
MW-32BR
Bedrock
01/26/2018
7.1
33.85
16
121
0.30
-22
183
1.8
28.3
28.3
<0.1
<1
3.8
<50
9.64
3.2
61.1
17.6
91
<100
<0.5
0.12
<5
<0.1
<0.08
<0.025 Ml
1.9 Sl
MW-32BR
Bedrock
04/27/2018
7.1
30.58
18
127
0.40
-50
155
0.5
31.6
31.6
<0.1
<1
<5
<50
10.2
3.4
61.5
14.9
108
55.9 j
0.13 j
0.12 SI
3.1 j
<0.1
<0.08
<0.025
0.31 j,S1
MW-32BR
Bedrock
07/31/2018
6.7
30.74
21
124
0.30
-56
149
8.0
30.7
30.7
<0.1
<1
11.6 D6
<50
10.5
3.7
55.3
16.7
113
309
0.095 j
0.11 Sl
3.8 j
<0.1
<0.08
<0.025 M1
0.62 S1
MW-32BR
Bedrock
10/25/2018
7.0
31.42
17
117
0.30
-130
75
6.2
28
28
<0.1
<1
4.6
<50
9.7
3.4
51.5
16.6
100
116
<0.5
0.077j
2.8j
0.016j
<0.08
<0.025
0.43 j,S1
MW-32D
Deep
01/26/2018
6.0
35.59
14
88
2.90
144
349
3.0
12.1
12.1
<0.1
<1
<2.6
<50
7.53
5.5
42.3
8.4
57
106
<0.5
0.36
7.5
<0.1
<0.08
<0.025
<0.5
MW-32D
Deep
04/27/2018
5.8
30.84
16
85
2.20
171
376
0.0
12.4
12.4
<0.1
<1
<2.5
<50
7.05
5.3
42
6.3
69
<100
<0.5
0.14 SI
7.7
<0.1
<0.08
<0.025
0.58 Sl
MW-32D
Deep
07/31/2018
5.8
31.47
25
88
2.70
164
369
0.4
12.3
12.3
<0.1
<1
<2.5
<50
6.68
5.5
38.2
6.5
65 D6
<100
<0.5
0.11 Sl
7.1
<0.1
<0.08
<0.025
0.24 j,S1
MW-32D
Deep
10/25/2018
6.0
32.01
17
82
3.40
48
253
1.5
11
11
<0.1
<1
<2.5
<50
6.5
5.4
37.1
6.1
63
<100
<0.5
0.079 j
7
<0.1
<0.08
0.068
0.26 j,S1
MW-32S
Shallow
07/31/2018
4.8
Below Pump
21
72
5.30
263
468
1.1
1.1 j
1.1 j
<0.1
<1
<2.5
<50
1.88
7.4
27.9
<1
25
62 j
<0.5
<0.1
49.5
0.092 j
<0.08
0.17 S1
0.33 j,S1
MW-32S
Shallow
10/25/2018
5.1
32.32 Top of Pump
16
70
5.50
137
342
4.1
<5
<5
<0.1
<1
<2.6
<50
1.9
7.3
27.6
<1
54
199
<0.5
0.11
46.4
0.2
<0.08
0.16
0.55 Sl
MW-34BRU
Deep
02/01/2018
7.3
33.75
10
151
0.50
-58
147
8.9
53.7
53.7
<0.1
<1
5.3
<50
20.6
5.3
59.4
11.2
113
257
NA
NA
<5
NA
NA
<0.025
NA
MW-34BRU
Deep
05/01/2018
7.3
30.13
20
156
0.30
-119
86
4.8
55.9
55.9
<0.1 Ml
<1
<2.5
<50
22.5
5.3
63
12
133
66.7 j
<0.5
0.17
<5
<0.1
<0.08
<0.025
0.4 j
MW-34BRU
Deep
08/06/2018
7.4
36.01
28
159
0.50
-143
62
6.6
55.8
55.8
<0.1
<1
<2.5
<50
21.8
5.5
65.6
12.3
115
<100
<0.5
<0.1
<5
<0.1
<0.08
<0.025
<0.5
MW-34BRU
Deep
10/29/2018
7.6
34.92
19
152
0.60
-129
76
2.2
55
55
<0.1
<1
<2.5
<50
22.1
4.8
66
11
114
<100
<0.5
<0.1
<5
<0.1
<0.08
0.041
0.16j
MW-34S
Shallow
04/30/2018
5.0
20.80
18
21
6.50
21
226
2.3
<5
<5
<0.1
<1 Ml
<5
<50
0.508
2.9
4.4j
<1
<25
216
<0.5
0.14 S1
10.4
0.064j
<0.08
0.088 S1
0.52 S1
MW-34S
Shallow
10/29/2018
5.5
28.32
19
23
5.20
134
339
1.7
3.6 j
3.6 j
<0.1
<1
7.8
<50
0.82
2.3
7.3
0.75 j
<25
132
<0.5
0.049 j
11.3
0.044 j
<0.08
0.077
0.25 j
MW-36BRU
Deep
02/01/2018
8.1
12.28
14
164
0.20
-137
68
9.4
81.5
81.5
<0.1
<1
7.2
<50
24.2
1.8
72.7
6.9
118
374
NA
NA
<5
NA
NA
0.032
NA
MW-36BRU
Deep
05/01/2018
2.9
10.24
15
173
0.90
31
236
3.0
80.6
80.6
<0.1
<1
<2.5
<50
27.3
1.8
68.9
7.4
122
87.3 j
<0.5
0.053 j
<5
<0.1
<0.08
<0.025
0.27 j
MW-36BRU
Deep
1 08/06/2018
7.8
17.37
20
174
0.90
-125
80
2.0
77.8
77.8
<0.1 Ml
<1
<5
<50
26.4
2.1
73.4
7.9
124
<100
<0.5
<0.1
<5
<0.1
<0.08
<0.025 M1
<0.5
MW-36BRU
Deep
11/01/2018
7.8
10.44
17
172
0.70
-92
113
1.3
84.9
84.9
<0.1
<1
<2.5
<50
25.6
1.9
71
7.3
117
<100
0.18 j
0.042 j
<5
<0.1
<0.08
<0.025
0.41 j,B,BC,S1
MW-36S
Shallow
02/01 2018
5.9
12.63
14
100
5.00
178
3831
9.6
1 13.6
13.6
<0.1
<1
3.4
56.8
8.12
2.5
66.8
24.8
86
318
NA
NA
35.3
NA
NA
0.26
NA
Page 37 of 45

TABLE 3-3
2018 COMPREHENSIVE GROUNDWATER QUALITY DATA
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS LLC, MOORESBORO NC
Analytical Parameters
INORGANIC PARAMETERS (TOTAL CONCENTRATION)
INORGANIC PARAMETERS (DISSOLVED CONCENTRATION WITH FILTER SIZE)
Cobalt
Copper
Iron
Lead
Lithium
Magnesium
Manganese
Mercury
Molybdenum
Nickel
Nitrate
+ Nitrite
Potassium
Selenium
Sodium
Thallium
Vanadium
Zinc
Aluminum
Antimony
Arsenic
Barium
Beryllium
Boron
Cadmium
Chromium
Cobalt
Reporting Units
ug/L
ug/L
ug/L
ug/L
ug/L
mg/L
ug/L
ug/L
ug/L
ug/L
mg-N/L
mg/L
ug/L
mg/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
15A NCAC 02L Standard
1*
1000
300
15
NE
NE
50
1
NE
100
NE
NE
20
NE
0.2*
0.3*
1000
NE
NE
NE
NE
NE
NE
NE
NE
NE
Background Threshold Values (Shallow Flow Zone)
10.65
6.569
765.3
1
NE
2.479
168.8
0.2
1
6.256
8.837
5
1
6.139
0.117
1.059
15
NE
NE
NE
NE
NE
NE
NE
NE
NE
Background Threshold Values (Deep Flow Zone)
9.041
9.453
559.7
1
NE
1.6
78.31
0.2
1
12.56
2.8
5
1
4.41
0.063
1.095
15.03
NE
NE
NE
NE
NE
NE
NE
NE
NE
Background Threshold Values (Bedrock Flow Zone)
1.497
5
6220
1
NE
2.328
89.4
0.2
1.716
5
0.92
5
1
1 7.42
0.1
0.37
10
NE
NE
NE
NE
NE
NE
NE
NE
NE
Sample ID
Sample Location
Aquifer Name
Sample
Collection Date
Analytical Results
MW-23DR
Bedrock
01/29/2018
<0.1
<0.5
956
<0.1
7.5
4.58
51.4
<0.2
<0.5
<0.5
<0.02
<5
<0.5
9.1
<0.1
<0.3
<10
<100
<0.5
0.23
35
<0.1
<50
<0.08
<0.5
<0.1
MW-23DR
Bedrock
04/26/2018
<0.1
0.36 j,SI
936
0.028 j
7.7
4.46
46.8
<0.2
0.27 j
0.15 j
<0.02
4.17 j
<0.5
9.22
<0.1
0.076 j,SI
<10
<100
<0.5
0.26 SI
34.7
<0.1
<50
<0.08
<0.5
0.02 j
MW-23DR
Bedrock
08/01/2018
<0.1
<0.5
1080
<0.1
7.2
4.48
55.5
<0.2
0.24 j
0.16 j
<0.02
3.91 j
<0.5
8.53
<0.1
<0.3
4.1 j,B,2g
<100
<0.5
0.21
34.4
<0.1
<50
<0.08
0.65 SI
<0.1
MW-23DR
Bedrock
10/23/2018
0.024 j
0.23 j,S1
923
<0.1
6.9
4.4
53.2
<0.2
0.29 j
<0.5
<0.02
4.2 j
<0.5
8.5
<0.1
<0.3
<10
<100
<0.5
0.19
34.6
<0.1
<50
<0.08
0.096 j
0.014 j
MW-23S
Shallow
01/29/2018
1.3
0.7 SI
152
<0.1
2.9
23.3
73.7
0.25
<0.5
5.6
0.57
<5
2
5.22
0.14 SI
<0.3
<10
<100
<0.5
0.14
56.7
1.6
<50
0.18
3
1.3
MW-23S
Shallow
04/26/2018
1.6
2.7 SI
227
0.074 j
1.1
4.78
75.1
<0.2
<0.5
2.3
2.5
<5
0.61
4.93 j
0.071 j
0.17 j,S1
5.6 j
<100
<0.5
<0.1
53.5
0.46
<50
0.056 j
1.8
1.5
MW-23S
Shallow
08/01/2018
0.56
0.36 j
470
0.042 j
2.3
20.6
59
<0.2
<0.5
3.7
0.61
<5
1
5.4
0.11
<0.3
6.9 j,B,2g
<100
<0.5
0.079 j
18.4
1.1
150
0.12
2.2 SI
0.75
MW-23S
Shallow
10/23/2018
0.92
0.53 S1
132
<0.1
2.5 j
18.9
55.4
0.16 j
<0.5
5.3
0.71
<5
1.3
4.8 j
0.14
0.23 j
5.5 j
<100
<0.5
0.11
47.1
1.2
38.1 j
0.17
3.3
0.96
MW-24D
Deep
01/29/2018
0.12
<0.5
<50
<0.1 B
1.6
1.13
<5
<0.2
<0.5
0.57
2.8
<5
<0.5
<5
<0.1
<0.3
<10
<100
<0.5
0.16
20.6
<0.1
<50
<0.08
<0.5
<0.1
MW-24D
Deep
04/27/2018
0.089 j
0.21 j,SI
<50
0.036 j
1.6
1.07
4.2 j
<0.2
<0.5
0.49 j,S1
2.5
<5
<0.5
4.18 j
0.034 j
0.096 j,SI
<10
<100
<0.5
0.11
18.4
0.069 j
<50
<0.08
0.3 j,SI
0.085 j
MW-24D
Deep
08/07/2018
0.11
0.19 j
49.5 j
<0.1
1.5
1.12
4.9 j
<0.2
<0.5
0.41 j
2.4
<5
<0.5
4.6 j
0.038 j
<0.3
3 j
<100
<0.5
0.14
20.6
0.039 j
<50
<0.08
<0.5
0.12
MW-24D
Deep
11/02/2018
0.12
0.16 j,S1
51.7
<0.1
1.6 j
1.2
4.8 j
<0.2
<0.5
0.55
2.8
<5
<0.5
4.3 j
0.031 j
0.21 j,S1
<10
<100
<0.5
0.12
20.2
0.035 j,SI
<50
<0.08
0.15 j,SI
0.1 SI
MW-24DR
Bedrock
01/29/2018
<0.1
<0.5
988
<0.1 B
7.1
1.81
60.8
<0.2
<0.5
<0.5
<0.02
<5
<0.5
7.2
<0.1
<0.3
<10
<100
<0.5
<0.1
<5
<0.1
<50
<0.08
<0.5
<0.1
MW-24DR
Bedrock
04/27/2018
<0.1
0.23 j,SI
949
0.032 j
7.2
1.7
51.8
<0.2
<0.5
<0.5
<0.02
<5
<0.5
7.24
<0.1
0.064 j,SI
<10
<100
<0.5
<0.1
3.3 j
<0.1
<50
<0.08
<0.5
<0.1
MW-24DR
Bedrock
08/07/2018
<0.1
0.14 j
987
0.059 j
6.5
1.69
60.3
<0.2
0.13 j
<0.5
<0.02
2.59 j
<0.5
7.64
<0.1
<0.3
<10
<100
<0.5
<0.1
3.6 j
<0.1
<50
<0.08
<0.5
<0.1
MW-24DR
Bedrock
11/02/2018
<0.1
<0.5
LOBO
<0.1
6.8
1.7
58.2
<0.2
0.12 j
<0.5
0.011 j
<5
<0.5
7.4
<0.1
0.12 j,S1
<10
<100
<0.5
<0.1
3.1 j
<0.1
<50
<0.08
<0.5
<0.1
MW-25DR
Bedrock
02/01/2018
NA
NA
<50
NA
NA
1.37
24.5 SI
<0.2
NA
NA
<0.02
<5
NA
8.7
NA
NA
<10
<100
NA
NA
<5
NA
<50
NA
NA
NA
MW-25DR
Bedrock
05/07/2018
0.42
1.7
<50
<0.1
1.8
1.17
3 j
<0.2
0.83
0.39 j,B,SI
<0.02
<5
<0.5
4.04 j
<0.1
0.17 j
<10
<100
<0.5
0.44
<5
<0.1
<50
<0.08
0.4 j
0.44
MW-25DR
Bedrock
08/06/2018
1.4
2.1
<50
0.047 j
2.3
1.38
9.2
<0.2
1.8
0.7
0.015 j
<5
<0.5
4.27 j
<0.1
0.29 j
6.8 j
<100
<0.5
0.59
<5
<0.1
<50
<0.08
0.43 j
1.1
MW-25DR
Bedrock
11/01/2018
1.1
3.5
99.1
0.15
2.3 j
1.2
6.4
<0.2
1.1
1.1
0.022
<5
<0.5
3.9 j
<0.1
0.35
8.3 j
<100
<0.5
0.38
<5
0.024 j
<50
<0.08
0.55 SI
0.72
MW-30D
Deep
01/26/2018
<0.1
<0.5
<50
<0.1
12.1
2.07
5.3
<0.2
3
1 SI
0.32
5.98
<0.5
8.82
<0.1
12
<10
<100
<0.5
1.3
46.3
<0.1
<50
<0.08
<0.5
<0.1
MW-30D
Deep
04/30/2018
0.051 j
0.37 j,S1
43.1 j
0.028 j,SI
11.6
2.21
7.2
<0.2
2.9
1.4
0.1
6.44
0.38 j
9.52
<0.1
11
<10
<100
<0.5
1.1
44.2
<0.1
<50
<0.08
<0.5 B
0.11
MW-30D
Deep
07/31/2018
0.1
0.26 j
50.4
<0.1
10.1
2.16
10.4
<0.2
2.5
2.2
0.1
5.38
0.29 j
8.36
<0.1
9.8
<10
<100
<0.5
1.5 SI
44.1
<0.1
<50
<0.08
0.2 j
0.091 j
MW-30D
Deep
10/25/2018
0.086 j
0.11 j
<50
<0.1
10.4
2.1
7.1
<0.2
2.7
1.9
0.098 SI
4.9 j
<0.5
8.1
<0.1
9.3
<10
<100
<0.5
1.6
47.2
<0.1
<50
<0.08
0.23 j
0.12
MW-30DA
Deep
01/26/2018
0.31
<0.5
2320
<0.1
13.4
2.86
408
<0.2
3.6
1.6 SI
<0.02
<5
<0.5
8.76
<0.1
0.43 51
<10
<100
<0.5
0.31
18.3
<0.1
<50
<0.08
1.1 SI
0.2
MW-30DA
Deep
04/27/2018
0.6
0.2 j,SI
1840
<0.1
9.4
3.04
326
<0.2
1.4
1.7
<0.02
3.71 j
<0.5
8.89
<0.1
0.18 j,S1
<10
<100
<0.5
0.16
20.6
0.037 j
<50
<0.08
0.22 j,S1
0.35
MW-30DA
Deep
07/31/2018
1.4
9.1
398
0.17
10
2.95
195
<0.2
3.8
13.6
0.058
3.73 j
<0.5
8.17
<0.1
0.34
9.5 j
<100
<0.5
0.15 SI
24.3
<0.1
<50
<0.08
0.17 j
0.97
MW-30DA
Deep
10/25/2018
0.96
3
53.1
<0.1
10.6
2.9
147
<0.2
2.6
5.6
0.081 SI
3.8 j
<0.5
8.1
<0.1
0.22 j
5.7 j
<100
<0.5
0.068 j
24.9
<0.1
<50
<0.08
0.18 j
0.73
MW-30S
Shallow
01/31/2018
0.59
<0.5
506
<0.1
1.2
1.38
13.5
<0.2
<0.5
1.6
0.91
<5
<0.5
<5
<0.1
1.1
<10
<100
<0.5
<0.1
32.8
<0.1
<50
<0.08
2.4
0.58
MW-30S
Shallow
04/27/2018
0.39
2.7
236
0.052 j
1
1.4
9.8
<0.2
<0.5
2.7
0.76
<5
<0.5
1.65 j
0.078 j
0.18 j,S1
6.6 j
<100
<0.5
<0.1
30.3
0.062 j
<50
<0.08
3.6
0.33
MW-30S
Shallow
07/31/2018
0.32
0.27 j
340
0.045 j
1.2
1.37
8.2
<0.2
0.064 j
1.9
0.77
<5
<0.5
1.61 j
0.069 j
0.18 j
2.7 j
<100
<0.5
0.52 SI
32.1
0.083 j
<50
<0.08
3.1
0.26
MW-30S
Shallow
10/25/2018
0.28
0.13 j
38.8 j
<0.1
1.2 j
1.4
4.6 j
<0.2
<0.5
1.2
0.77
<5
<0.5
1.5 j
0.073 j
0.11 j
4.7 j
<100
<0.5
<0.1
33.3
0.099 j
<50
<0.08
2.3
0.25
MW-32BR
Bedrock
01/26/2018
<0.1
<0.5
5260
<0.1
7.3
1.93
31.9
<0.2
1.1
1.2 SI
<0.02
<5
<0.5
6.14
<0.1
<0.3
<10
<100
<0.5
<0.1
<5
<0.1
<50
<0.08
<0.5
<0.1
MW-32BR
Bedrock
04/27/2018
0.023 j
0.3 j,S1
4980
0.036 j
6.9
1.92
30.1
<0.2
0.79
0.21 j,SI
0.015 j
3.81 j
<0.5
7.13
<0.1
0.13 j,S1
<10
<100
<0.5
0.079 j
2.7 j
<0.1
<50
<0.08
<0.5
0.022 j
MW-32BR
Bedrock
07/31/2018
0.1
2.3
5720
0.24
5.1
1.91
35.7
<0.2
2.8
1.4
<0.02
2.97 j
<0.5
5.97
<0.1
0.34
5.1 j
<100
<0.5
0.078 j,SI
<5
<0.1
<50
<0.08
<0.5
<0.1
MW-32BR
Bedrock
10/25/2018
0.058 j
1.2
5260
0.1
5.1
1.9
34.6
<0.2
1.4
0.59
0.025 B,SI
2.6 j
<0.5
5.7
<0.1
0.16 j
3.6 j
<100
<0.5
0.056 j
2.6 j
<0.1
<50
<0.08
0.17 j
0.023 j,S1
MW-32D
Deep
01/26/2018
2.5
3.4
<50
0.14 SI
3
1.81
13.4
<0.2
<0.5
7.6
2.4
<5
<0.5
<5
<0.1
<0.3
<10
<100
<0.5
0.23
8
<0.1
<50
<0.08
<0.5
2.3
MW-32D
Deep
04/27/2018
2
2.9
<50
0.11
3
1.73
11.9
<0.2
0.09 j
6.8
2.4
<5
<0.5
4.31 j
<0.1
0.16 j,S1
3.9 j
<100
<0.5
0.06 j
6.9
<0.1
<50
<0.08
0.92 SI
1.9
MW-32D
Deep
07/31/2018
1.8
2.7
<50
0.084 j
2.7
1.6
11.6
<0.2
0.074 j
6.4
2.4
<5
<0.5
4.01 j
<0.1
<0.3
4.6 j
<100
<0.5
0.11 SI
6.6
<0.1
<50
<0.08
0.19 j
1.8
MW-32D
Deep
10/25/2018
1.6
2.2
<50
0.092 j
2.9
1.6
9.6
<0.2
<0.5
5.8
2.5
<5
<0.5
4 j
<0.1
<0.3
4.8 j
<100
<0.5
0.09 j
7.4
<0.1
<50
<0.08
0.36 j
1.8
MW-32S
Shallow
07/31/2018
0.88
2.4
<50
<0.1
2.4
1.96
35.4
<0.2
<0.5
1.7
4.2
<5
<0.5
4.63 j
0.072 j
<0.3
4.3 j
71.9 j
<0.5
<0.1
44.7
0.081 j
<50
<0.08
0.39 j
0.87
MW-32S
Shallow
10/25/2018
1
7.3
120
0.12
2.6
2
38.3
<0.2
<0.5
2.1
4
<5
<0.5
4.6 j
0.081 j
0.17 j
5.9 j
<100
<0.5
<0.1
43.4
0.082 j
<50
<0.08
0.62
0.82
MW-34BRU
Deep
02/01/2018
NA
NA
1270
NA
NA
1.73
38.2
<0.2
NA
NA
<0.02
<5
NA
5.17
NA
NA
<10
252
NA
NA
<5
NA
<50
NA
NA
NA
MW-34BRU
Deep
05/01/2018
0.03 j
0.3 j,S1
450
0.036 j,SI
1.3
1.72
38.2
<0.2
<0.5
0.28 j
<0.02
<5
<0.5
5.11
<0.1
<0.3
<10
<100
<0.5
0.13
<5
<0.1
<50
<0.08
<0.5
0.022 j
MW-34BRU
Deep
08/06/2018
0.06 j
0.23 j
744
<0.1
1.3
1.68
41.6
<0.2
1.7
0.56
<0.02
<5
<0.5
4.73 j
<0.1
<0.3
<10
<100
<0.5
<0.1
<5
<0.1
<50
<0.08
<0.5
0.055 j
MW-34BRU
Deep
10/29/2018
0.073 j
0.87
793
<0.1
1.3 j
1.7
44.7
<0.2
0.33 j
<0.5
<0.02
<5
<0.5
4.9 j
<0.1
<0.3
9 j
<100
<0.5
<0.1
<5
<0.1
<50
<0.08
<0.5
0.028 j
MW-34S
Shallow
04/30/2018
0.99
0.49 j,SI
135
0.13 SI
1.2
0.593
28.5
<0.2
<0.5
0.78
0.039
<5
<0.5
1.42 j
0.031 j
0.096 j,S1
<10
<100
<0.5
<0.1
9.4
0.067 j
<50
<0.08
0.5 S1
0.94
MW-34S
Shallow
10/29/2018
2.1
0.5 j
132
<0.1
1.1 j
0.54
37.2
<0.2
<0.5
0.59
0.12 SI
<5
<0.5
1.7 j
0.031 j
0.15 j
7.4 j
<100
<0.5
<0.1
9.7
0.034 j
<50
<0.08
0.092 j,SI
1.9
MW-36BRU
Deep
02/01/2018
NA
NA
437
NA
NA
1.52
69.6
<0.2
NA
NA
<0.02
<5
NA
8.03
NA
NA
<10
<100
NA
NA
<5
NA
<50
NA
NA
NA
MW-36BRU
Deep
05/01/2018
0.068 j
0.38 j,S1
178
0.043 j,SI
3
1.57
58.6
<0.2
0.34 j
0.23 j
<0.02
<5
<0.5
8.53
<0.1
0.15 j,S1
<10
<100
<0.5
<0.1
<5
<0.1
<50
<0.08
<0.5
0.044 j
MW-36BRU
Deep
08/06/2018
0.036 j
0.18 j
229
0.046 j
2.8
1.6
74.8
<0.2
0.31 j
<0.5
<0.02
<5
<0.5
7.96
<0.1
<0.3
23.8
<100
<0.5
0.09 j
<5
<0.1
<50
<0.08
<0.5
0.027 j
MW-36BRU
Deep
11/01/2018
0.042 j
0.23 j,B
138
<0.1
2.8
1.5
72.8
<0.2
0.32 j
<0.5
<0.02
<5
<0.5
7.8
<0.1
0.084 j
<10
56.6 j
<0.5
<0.1
<5
<0.1
<50
<0.08
0.38 j,SI
0.038 j
MW-36S
Shallow
02/01/2018
NA
NA
384
NA
NA
3.39
142
<0.2
NA
NA
0.4
<5
NA
<5
NA
NA
<10
<100
NA
NA
27.6
NA
56.1
NA
NA
NA
Page 38 of 45

TABLE 3-3
2018 COMPREHENSIVE GROUNDWATER QUALITY DATA
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS LLC, MOORESBORO NC
Analytical Parameters
INORGANIC PARAMETERS (DISSOLVED CONCENTRATION WITH FILTER SIZE)
RADIONUCLIDES
OTHER PARAMETERS
Copper
Iron
Lead
Lithium
Manganese
Mercury
Molybdenum
Nickel
Phosphorus
Selenium
Strontium
Thallium
Vanadium
Zinc
Radium-226
Radium-228
Total
Radium
Uranium-238
Total Uranium
Uranium-238
(Dissolved)
Carbonate
Alkalinity
Fluoride
Phosphorus
Reporting Units
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
mg/L
ug/L
ug/L
ug/L
ug/L
ug/L
pCi/L
pCi/L
pCi/L
ug/mL
ug/mL
ug/mL
mg/L
mg/L
mg/L
15A NCAC 02L Standard
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
5^
NE
0.03^
NE
NE
2
NE
Background Threshold Values (Shallow Flow Zone)
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
2.58
NE
0.0005
NE
5
NE
NE
Background Threshold Values (Deep Flow Zone)
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
1.51
NE
0.0005
NE
5
NE
NE
Background Threshold Values (Bedrock Flow Zone)
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
3.1
NE
0.0005
NE
5
NE
NE
Sample ID
Sample Location
Aquifer Name
Sample
Collection Date
Analytical Results
MW-23DR
Bedrock
01/29/2018
<0.5
823
<0.1
NA
46.7
<0.2
<0.5
<0.5
<0.05
<0.5
98.7
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
MW-23DR
Bedrock
04/26/2018
0.43 j,S1
828
<0.1
NA
44.2
<0.2
0.24 j
0.92 SI
<0.05
<0.5
101
<0.1
0.063 j,S1
<10
NA
NA
NA
NA
NA
NA
<5
0.075 j
<0.05
MW-23DR
Bedrock
08/01/2018
<0.5
910
<0.1
NA
46.4
<0.2
0.23 j
0.82 B,S1
<0.05
<0.5
101
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
0.076 j
<0.05
MW-23DR
Bedrock
10/23/2018
<0.5
856
<0.1
NA
47.7
<0.2
0.22 j
<0.5
<0.05
<0.5
95
<0.1
<0.3
3.8 j
NA
NA
NA
NA
NA
NA
<5
0.067 j
<0.05
MW-23S
Shallow
01/29/2018
1.8
<50
<0.1 B
NA
69.5
<0.2
<0.5
5.7
<0.05
1.9
161
0.14
<0.3
<10 B
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
MW-23S
Shallow
04/26/2018
0.75 SI
<50
0.029 j,S1
NA
67.2
<0.2
<0.5
2.7
<0.05
0.54
45.3
0.099 j
0.066 j,S1
4.7 j
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
MW-23S
Shallow
08/01/2018
2.4
953
<0.1
NA
318
<0.2
<0.5
4.2 S1
<0.05
1.1
198
0.11
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
MW-23S
Shallow
10/23/2018
2.9
<50
<0.1
NA
52.7
<0.2
<0.5
4.9
<0.05
1.3
123
0.12
<0.3
14.8
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
MW-24D
Deep
01/29/2018
<0.5
<50
<0.1
NA
<5
<0.2
<0.5
0.52 SI
<0.05
<0.5
24.5
<0.1
<0.3
<10
0.241
0.577
0.818
<0.0005
<0.0005
NA
<5
<0.1
<0.05 M1,R1
MW-24D
Deep
04/27/2018
1.3 S1
<50
<0.1
NA
3.6 j
<0.2
<0.5
0.62
<0.05
<0.5
22.2
0.038 j
0.077 j,S1
<10
0.26 U
0.309 U
0.569 U
<0.0005
<0.0005
<0.0005
<5
<0.1
<0.05
MW-24D
Deep
08/07/2018
1.8
<50
0.042 j
NA
4.2 j
<0.2
<0.5
0.48 j
<0.05
<0.5
24.3
0.034 j
<0.3
2.6 j
0.215 U
-0.372 U
0.215 U
<0.0005
<0.0005
<0.0005
<5
<0.1
<0.05
MW-24D
Deep
11/02/2018
1.2 SI
<50
<0.1
NA
4.2 j
<0.2
<0.5
0.51 S1
<0.05
<0.5
24.6
0.022 j
<0.3
3.3 j
0.107 U
0.211 U
0.318 U
NA
<0.0005
NA
<5
<0.1
<0.05
MW-24DR
Bedrock
01/29/2018
<0.5
924
<0.1
NA
49.3
<0.2
<0.5
<0.5
0.057
<0.5
72.7
<0.1
<0.3
<10
1.88
0.729
2.609
<0.0005
<0.0005
NA
<5
0.13
0.052
MW-24DR
Bedrock
04/27/2018
0.11 j,S1
947
<0.1
NA
47.2
<0.2
0.13 j
0.21 j
<0.05
<0.5
68.9
<0.1
0.11 j,S1
<10
0.677 U
1.09
1.77 U
<0.0005
<0.0005
<0.0005
<5
0.13
0.04 j
MW-24DR
Bedrock
08/07/2018
0.13 j
943
<0.1
NA
53.4
<0.2
0.12 j
<0.5
0.056
<0.5
73.6
<0.1
<0.3
4.1 j
0.681 U
0.618 U
1.3 U
<0.0005
<0.0005
<0.0005
<5
0.17
0.044 j
MW-24DR
Bedrock
11/02/2018
0.15 j,S1
985
<0.1
NA
51.6
<0.2
<0.5
<0.5
0.057
<0.5
71.8
<0.1
<0.3
<10
1.43
1.29
2.72
NA
<0.0005
NA
<5
0.14
0.055
MW-25DR
Bedrock
02/01/2018
NA
<50
NA
NA
19.1
<0.2
NA
NA
<0.05
NA
81.2
NA
NA
<10
NA
NA
NA
NA
NA
NA
<5
0.24
<0.05
MW-25DR
Bedrock
05/07/2018
1.9 B
<50
<0.1
NA
3 j
<0.2
0.95
0.46 j
<0.05
<0.5
31.3
<0.1
0.77 B
<10
NA
NA
NA
NA
NA
NA
<5
0.06 j
<0.05
MW-25DR
Bedrock
08/06/2018
2
26 j
<0.1
NA
7.3
<0.2
1.8
0.72
<0.05
<0.5
41.3
<0.1
0.39
4.7 j
NA
NA
NA
NA
NA
NA
<5
0.092 j
<0.05
MW-25DR
Bedrock
11/01/2018
2.2 S1
<50
<0.1
NA
4 j
<0.2
0.97
0.61
<0.05
<0.5
34.2
<0.1
0.23 j
4.8 j
NA
NA
NA
NA
NA
NA
<5
0.072 j
<0.05
MW-30D
Deep
01/26/2018
<0.5
<50
0.14
NA
8.3
<0.2
2.8
1.9 S1
<0.05
<0.5
62.3
<0.1
10.9
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05 M1,R1
MW-30D
Deep
04/30/2018
0.41 j,S1
<50
<0.1
NA
8.8
<0.2
2.6
2 SI
<0.05
0.26 j
59.7
<0.1
9
<10
0.524 U
1.61
2.13
0.00038 j
0.00038 j
0.00034 j
<5
0.062 j
<0.05
MW-30D
Deep
07/31/2018
0.24 j,SI
<50
<0.1
NA
9
<0.2
2.3
2.2
<0.05
0.28 j
56
<0.1
8.9
<10 P8
-0.063 U
0.884 U
0.884 U
0.0003 j
0.0003 j
0.00031 j
<5
0.058 j
<0.05
MW-30D
Deep
10/25/2018
0.48 j,S1
<50
<0.1
NA
8.9
<0.2
2.2
2.6
<0.05
<0.5
58.2
<0.1
7.3
8.1 j
0.671
0.315 U
0.986 U
NA
0.00034 j
NA
<5
0.054 j
<0.05
MW-30DA
Deep
01/26/2018
<0.5
1790
<0.1
NA
329
<0.2
2.9
0.75 SI
<0.05
<0.5
60.8
<0.1
<0.3
<10
0.215
0.138
0.353
<0.0005
<0.0005
NA
<5
0.12
<0.05
MW-30DA
Deep
04/27/2018
0.22 j,S1
1730
<0.1
NA
269
<0.2
1.1
0.91
<0.05
<0.5
58.4
<0.1
0.088 j,S1
<10
-0.336 U
0.327 U
0.327 U
<0.0005
<0.0005
<0.0005
<5
0.072j
<0.05
MW-30DA
Deep
07/31/2018
0.8 S1
486
0.048j
NA
218
<0.2
2.1
4.3
<0.05
<0.5
63.5
<0.1
0.14j
8j,B
0.144 U
0.412 U
0.556 U
<0.0005
<0.0005
<0.0005
<5
0.073j
<0.05
MW-30DA
Deep
10/25/2018
0.34 j,S1
311
<0.1
NA
191
<0.2
1.3
3.2
<0.05
<0.5
63.1
<0.1
0.22 j
8.6 j
0.241 U
0.378 U
0.619 U
NA
<0.0005
NA
<5
0.071 j
<0.05
MW-30S
Shallow
01/31/2018
<0.5
<50
<0.1
NA
8.6
<0.2
<0.5
1.5
<0.05
<0.5
10.2
<0.1
<0.3
<10
0.267
0.365
0.632
<0.0005
<0.0005
NA
<5
<0.1
<0.05
MW-30S
Shallow
04/27/2018
1.8 SI
<50
<0.1
NA
6.7
<0.2
<0.5
2.5
<0.05
<0.5
9.1
0.081 j
0.064 j,S1
4.8 j
-0.191 U
0.135 U
0.135 U
<0.0005
<0.0005
<0.0005
<5
<0.1
<0.05
MW-30S
Shallow
07/31/2018
0.52 S1
<50
<0.1
NA
4.4 j
<0.2
0.082 j
2
<0.05
<0.5
9.5
0.067 j
<0.3
2.5 j,B
0 U
0.437 U
0.437 U
<0.0005
<0.0005
<0.0005
<5
<0.1
<0.05
MW-30S
Shallow
10/25/2018
0.77 SI
<50
<0.1
NA
4 j
<0.2
<0.5
1.1
<0.05
<0.5
9.7
0.074 j
<0.3
2.9 j
0.545 U
0.586
1.13
NA
<0.0005
NA
<5
<0.1
<0.05
MW-32BR
Bedrock
01/26/2018
<0.5
4260
<0.1
NA
25.6
<0.2
0.98
<0.5
0.093
<0.5
52.7
<0.1
<0.3
<10
0.0716
0.0466
0.1182
<0.0005
<0.0005
NA
<5
<0.1
0.1 M1
MW-32BR
Bedrock
04/27/2018
0.19 j,S1
4170
<0.1
NA
25.9
<0.2
1
0.16 j
0.098
<0.5
50.6
<0.1
0.092 j,S1
<10
0.243 U
0.67
0.913 U
<0.0005
<0.0005
<0.0005
<5
0.075 j
0.1
MW-32BR
Bedrock
07/31/2018
<0.5
3910
<0.1
NA
26.4
<0.2
2.1
0.42 j
0.08
<0.5
49.8
<0.1
0.083 j
<10
-0.197 U
0.249 U
0.249 U
<0.0005
<0.0005
<0.0005
<5
0.092 j
0.12
MW-32BR
Bedrock
10/25/2018
0.18 j,S1
4390
<0.1
NA
28.6
<0.2
1.2
0.44 j
0.1
<0.5
50.5
<0.1
<0.3
<10
-0.064 U
0.262 U
0.262 U
NA
<0.0005
NA
<5
0.08 j
0.11
MW-32D
Deep
01/26/2018
2.8
<50
<0.1
NA
12
<0.2
<0.5
7.5
<0.05
<0.5
40.9
<0.1
<0.3
<10
0.146
0.387
0.533
<0.0005
<0.0005
NA
<5
<0.1
<0.05
MW-32D
Deep
04/27/2018
3.6
<50
0.088 j
NA
11.9
<0.2
0.11 j
7.8
<0.05
<0.5
36.2
<0.1
0.095 j,S1
3.8 j
0 U
0.799
0.799 U
0.000035 j
0.000035 j
<0.0005
<5
<0.1
<0.05
MW-32D
Deep
07/31/2018
2.8
<50
0.08 j
NA
11.3
<0.2
0.081 j
6.2
<0.05
<0.5
36.4
<0.1
<0.3
4.7 j
0 U
-0.114 U
0 U
<0.0005
<0.0005
<0.0005
<5
<0.1
<0.05
MW-32D
Deep
10/25/2018
2.4
<50
<0.1
NA
12.9
<0.2
<0.5
6.6
<0.05
<0.5
37.7
<0.1
<0.3
4.8 j
0.3 U
0.117 U
0.417 U
NA
<0.0005
NA
<5
<0.1
<0.05
MW-32S
Shallow
07/31/2018
3.5
<50
<0.1
NA
33.8
<0.2
<0.5
1.8
<0.05
<0.5
27
0.069 j
<0.3
4.5 j,B
0.0628 U
0.459 U
0.522 U
<0.0005
<0.0005
<0.0005
<5
<0.1
<0.05
MW-32S
Shallow
10/25/2018
1.6
<50
<0.1
NA
34
<0.2
<0.5
1.6
<0.05
<0.5
27
0.072 j
<0.3
7.1 j
0.581 U
0.364 U
0.945 U
NA
<0.0005
NA
<5
<0.1
<0.05
MW-34BRU
Deep
02/01/2018
NA
1090
NA
NA
35.5
<0.2
NA
NA
<0.05
NA
53.2
NA
NA
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
MW-34BRU
Deep
05/01/2018
0.19 j,S1
350
<0.1
NA
35.2
<0.2
0.093j
0.44 j,SI
<0.05
<0.5
59.5
<0.1
0.059j
<10
NA
NA
NA
NA
NA
NA
<5
0.051j
<0.05
MW-34BRU
Deep
08/06/2018
0.15j
595
0.053j
NA
35.8
<0.2
1.4
0.66
<0.05
<0.5
58.4
<0.1
0.077j
<10
NA
NA
NA
NA
NA
NA
<5
0.068j
0.027j
MW-34BRU
Deep
10/29/2018
0. 16j
618
<0.1
NA
37.5
<0.2
0.41j
<0.5
0.026j
<0.5
60.2
<0.1
<0.3
3j
NA
NA
NA
NA
NA
NA
<5
<0.1
0.026j
MW-34S
Shallow
04/30/2018
1.3 S1
<50
0.048j
NA
25.2
<0.2
<0.5
1 S1
<0.05
<0.5
4.3j
0.031j
<0.3
2.9j
NA
NA
NA
<0.0005
<0.0005
<0.0005
<5
<0.1
<0.05
MW-34S
Shallow
10/29/2018
1.4
<50
<0.1
NA
33.2
<0.2
<0.5
0.76
<0.05
<0.5
6.6
0.029 j
<0.3
5.6 j
NA
NA
NA
NA
NA
NA
<5
<0.1
0.24
MW-36BRU
Deep
02/01/2018
NA
117
NA
NA
58.9
<0.2
NA
NA
<0.05
NA
59.8
NA
NA
<10
NA
NA
NA
NA
NA
NA
<5
0.15
<0.05
MW-36BRU
Deep
05/01/2018
0.13 j,S1
29.2 j
<0.1
NA
51.2
<0.2
0.28 j
0.81 SI
<0.05
<0.5
64.2
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
0.15
<0.05
MW-36BRU
Deep
08/06/2018
0.6
153
<0.1
NA
58.7
<0.2
0.3j
<0.5
<0.05
<0.5
61.9
0.049j
0.063j
19.5
NA
NA
NA
NA
NA
NA
<5
0.19
0.027j
MW-36BRU
Deep
11/01/2018
0.26 j,S1
115
<0.1
NA
67.2
<0.2
0.26 j
0.57
<0.05
<0.5
68.4
<0.1
<0.3
5.6 j
NA
NA
NA
NA
NA
NA
<5
0.18
<0.05
MW-36S
Shallow
02/01/2018
NA
<50
NA
NA
114
<0.2
NA
NA
1 <0.05
NA
55.8
NA
NA
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
Page 39 of 45

TABLE 3-3
2018 COMPREHENSIVE GROUNDWATER QUALITY DATA
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS LLC, MOORESBORO NC
Analytical Parameters
FIELD PARAMETERS
WATER QUALITY PARAMETERS
SELECTED 40CFR257 APPENDIX III CONSTITUENTS plus Sr
INORGANIC PARAMETERS (TOTAL CONCENTRATION)
pH
Water
Level
Temp
Spec
Cond
DO
ORP
Eh
Turbidity
Alkalinity
Bi-
carbonate
Alkalinity
Sulfide
Total
Organic
Carbon
Total
Suspended
Solids
Boron
Calcium
Chloride
Strontium
Sulfate
Total
Dissolved
Solids
Aluminum
Antimony
Arsenic
Barium
Beryllium
Cadmium
Chromium
(VI)
Chromium
Reporting Units
S.U.
ft
Deg C
umhos/cm
mg/L
mV
mV
NTUs
mg/L
mg/L
mg/L
mg/L
mg/L
ug/L
mg/L
mg/L
ug/L
mg/L
mg/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
15A NCAC 02L Standard
6.5-8.5
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
700
NE
250
NE
250
Soo
NE
1*
SO
700
4*
2
SO
10
Background Threshold Values (Shallow Flow Zone)
4.4-6.1
NE
NE
NE
NE
NE
NE
NE
13.67
14.42
0.1
1
NE
50
3.221
7.7
36.71
1.169
75.47
253
1
0.5
73.03
0.188
1
0.452
3.968
Background Threshold Values (Deep Flow Zone)
4.8-6.1
NE
NE
NE
NE
NE
NE
NE
19.74
18.13
0.1
1
NE
50
11
5.1
56.14
10
70.98
290
1
0.763
23
0.2
1
0.16
1.791
Background Threshold Values (Bedrock Flow Zone)
5.4-7.4
NE
NE
NE
I NE
I NE
I NE
NE
I 53
68.82
0.1
1
NE
So
16
8.656
107.1.
15.1
1.20
208.2
1
1
19.33
1
1
0.12
3.567
Sample ID
Sample Location
Aquifer Name
Sample
Collection Date
Analytical Results
MW-36S
Shallow
05/01/2018
5.6
9.05
15
61
5.60
0
205
4.9
4.3 j
4.3 j
<0.1
<1
7.3
50
2.15
1.8
15.9
9.8
49
263
<0.5
0.15
26.5
<0.1
<0.08
0.17 S1
0.62
MW-36S
Shallow
08/06/2018
5.4
11.66
19
89
1.80
-166
39
5.6
7.1
7.1
<0.1
<1
2.8
78.4
6.06
3.5
54.9
21.6
56 D6
230
<0.5
0.12
50.4
0.069 j
<0.08
0.22
0.41 j
MW-36S
Shallow
11/01/2018
5.5
8.98
18
60
4.60
204
409
4.6
4 j
4 j
<0.1
0.51 j
9
56.7
4.3
0.7 j
37.6
2.2
55
154
<0.5
0.14
62.8
0.058 j
<0.08
0.19
0.7 B,BC,SS
MW-38BR
Bedrock
01/26/2018
6.7
41.02
16
695
0.30
-29
176
7.1
82.2
82.2
<0.1
<1
3.5
54.3
96
3.3
421
278
528
118
<0.5
0.94
40.2
<0.1
<0.08
<0.025
1.9 Sl
MW-38BR
Bedrock
04/27/2018
6.4
39.54
17
710
0.40
0
205
2.8
78.8
78.8
<0.1
<1
<2.5
55.7
92.6
3.2
415
250
531
93.6 j
0.18 j
0.83 SI
39.6
<0.1
<0.08
<0.025
0.99 SS
MW-38BR
Bedrock
07/31/2018
6.4
39.91
23
692
0.30
11
216
8.5
82.5
82.5
<0.1
<1
6
56.9
93.8
3.4
393
276
533
380
<0.5
0.75 SI
39.1
<0.1
<0.08
<0.025
0.98 Sl
MW-38BR
Bedrock
10/22/2018
6.6
40.74
18
655
0.50
-65
140
0.3
81
81
<0.1
<1
<2.6
47.5j
82.1
3.1
357
243
497
<100
<0.5
0.81
33.7
0.021j
<0.08
<0.025
0.29 j,SI
MW-38D
Deep
01/26/2018
5.9
39.54
16
548
0.90
85
290
8.7
40.3
40.3
<0.1
<1
<2.5
230
67.4
5.2
214
232
396
234
<0.5
0.33
28.3
0.11
0.28
0.12 SI
0.66 S1
MW-38D
Deep
04/27/2018
5.8
38.02
22
614
0.60
89
294
8.1
40.4
40.4
<0.1
<1
<2.5
232
69.3
5.2
224
218
420
185
0.13j
0.27 S1
29.6
0.12
0.28
0.056 S1
5.6
MW-38D
Deep
07/31/2018
5.6
39.60
23
576
0.40
53
258
7.5
37.2
37.2
<0.1
0.5j
8
238
66.4
6
205
246
445
462
<0.5
0.31 SI
26.1
0.049j
0.26
0.14 SI
1.3 S1
MW-38D
Deep
10/22/2018
5.8
39.28
19
563
0.70
22
227
1.4
39
39
<0.1
<1
<2.6
241
64.6
5.7
212
227
424
97.8j
<0.5
0.13
23.6
0.084j
0.33
0.11
0.58 SI
MW-38S
Shallow
02/02/2018
5.2
40.26
10
352
0.40
60
265
6.2
12.2
12.2
<0.1
<1
5.2
105
17.6
7.9
69.5
145
253
384
<0.5
0.19
39.4
0.21
0.17
0.29 S1
2.8 SI
MW-38S
Shallow
04/27/2018
5.4
38.99
20
443
0.20
60
265
9.6
11.9
11.9
<0.1
<1
<2.5
144
6.5
6.6
98.1
163
309
399
<0.5
0.11 SI
39.2
0.42
0.19
0.15 SI
1.2 Sl
MW-38S
Shallow
07/31/2018
5.2
40.18
23
371
0.30
37
242
6.7
12.2
12.2
<0.1
<1
3.5
120
20.3
9.6
79
153
268
327
<0.5
0.12 S1
40.1
0.13
0.17
0.32 S1
0.83 S1
MW-38S
Shallow
10/22/2018
5.3
40.01
19
335
0.70
126
331
0.8
11
11
<0.1
<1
<2.5
99.1
13.8
9.8 Ml
67.4
123 MI
233
51.8 j
<0.5
0.048 j
36.1
0.16
0.16
<0.05
0.31 j,Sl
MW-40BRU
Deep
01/26/2018
8.1
5.72
15
427
0.50
-144
61
2.6
109
109
<0.1
<1
<2.6
<50
69.3
8.7
208
101
303
<100
<0.5
0.46
14.8
<0.1
<0.08
1.2
<0.5
MW-40BRU
Deep
04/26/2018
7.7
3.67
20
447
0.60
-35
170
1.9
111
111
<2.5
0.72j
<2.5
<50
72.3
7.4
197
92 MI
283
<100
<0.5
0.43 S1
12.9
<0.1
<0.08
<0.025
0.82 S1
MW-40BRU
Deep
07/31/2018
7.6
5.45
30
451
0.90
-89
116
0.8
103
103
<0.1
<1
<2.5
<50
72.7
8.4
202
93.1
278
<100
<0.5
0.47 S1
13.7
<0.1
<0.08
0.032 S1
0.24 j,Sl
MW-40BRU
Deep
10/22/2018
7.5
5.00
21
423
0.70
6
211
0.3
107
107
<0.1
0.81j
<2.5
<50
63.7
8.2
192
92.3
298
<100
0.14j
0.57
15.3
<0.1
<0.08
0.15
0.27 j,Sl
MW-40S
Shallow
01/26/2018
5.5
7.25
18
323
2.70
96
301
9.9
8.8
8.8
<0.1
<1
2.7
<50
34.6
15.9
165
114
223
424
<0.5
<0.1
81
0.11
<0.08
1.1
1.7 Sl
MW-40S
Shallow
04/26/2018
5.5
6.23
20
342
2.60
108
313
9.7
10.8
10.8
<2.5
<1
4.5
27 j
34.7
15.1
152
92.3
232
626
<0.5
0.13 S1
74.5
0.12
0.047 j
0.77
1.8 Sl
MW-40S
Shallow
07/31/2018
5.3
7.00
22
354
4.20
-118
87
9.8
9.3
9.3
<0.1
<1
4.7
30.3 j
34.8
15.7
156
107
243
1190
<0.5
0.074 j,SI
79.9
0.096 j
0.051 j
0.57 Sl
1.2 Sl
MW-40S
Shallow
10/22/2018
5.6
6.98
22
339
2.60
131
336
8.7
9
9
<0.1
<1
3.4
28j
31.9
16
160
117
252
393
<0.5
0.08j
71.9
0.12
0.089
0.49
1.7
MW-42DA
Deep
01/29/2018
7.2
38.95
19
468
1.20
-1
204
9.8
94.4
94.4
<0.1
<1
<2.5
<50
43.1
11.5
121
106
302
160
<0.5
1.3
57.8
<0.1
<0.08
0.086 SI
0.5 S1
MW-42DA
Deep
04/30/2018
7.4
36.74
24
472
2.80
76
281
8.0
92.5
92.5
<0.1
0.6j
<2.6
<50
42.2
11.8
107
114
294
306
0.31j
0.84 S1
49.6
<0.1
<0.08
0.072 S1
7.7
MW-42DA
Deep
07/30/2018
7.1
36.75
32
421
0.10
90
295
9.0
86.5
86.5
<0.1
<1
<2.6
<50
41.6
11
106
98.1
301
63.2 j,Sl
0.2 j
0.4 Sl
40.6
<0.1
<0.08
0.1 S1
0.44 j
MW-42DA
Deep
10/23/2018
7.1
37.60
15
405
4.30
23
228
1.1
84.7
84.7
<0.1
<1
<5
<50
41.1
10.3
108
99.1
287
<100
0.11 j
0.3
37.7
<0.1
<0.08
0.11
0.47 j,B,Sl
MW-42S
Shallow
01/29/2018
5.7
38.74
16
74
3.20
270
475
6.4
27.6
27.6
<0.1
<1
2.8
<50
5.96
1.8
37.8
3.4
43
266
<0.5
11.1
36.4
<0.1
<0.08
0.62
5.8
MW-42S
Shallow
04/30/2018
5.6
36.01
19
78
6.60
212
417
2.0
23.1
23.1
<0.1
<1
<2.5
<50
6
1.9
35.5
8.9
39
94.1 j
<0.5
0.086 j,SI
31.8
<0.1
0.029 j
0.7 Sl
3
MW-42S
Shallow
07/30/2018
5.5
35.90
22
8
6.80
192
397
2.1
25.5
25.5
<0.1
<1
<2.5
<50
6.18
2.3
36.4
6.1
71
67.1 j,Sl
<0.5
<0.1
31
<0.1
<0.08
1.3
1.3
MW-42S
Shallow
10/23/2018
5.6
36.1 Top of Pump
11
64
5.30
160
365
4.2
29.9
29.9
<0.1
<1
<5
<50
5.2
1.3
31.9
2
58
94.8 j
<0.5
0.089 j
27.2
0.023 j
<0.08
0.53
1.1 B,SI
SY-01
Shallow
12/18/2018
5.6
27.00
18
371
0.20
67
272
8.1
49.8
49.8
<0.1
0.93j
5.9
85.3
38.7
2.7
69.3
125
242
147
<0.5
0.18
26.4
0.024j
0.084
<0.025
0.45 j,B,SI
SY-02
Shallow
12/18/2018
5.8
37.35
17
243
0.30
93
298
2.8
70.9
70.9
<0.1
1.1
<2.5
<50
19.4
2.4
18.9
51.8
148
<100
<0.5
0.14
37.2
0.059 j
0.06 j
0.055 SS
0.24 j,B,SI
SY-03
Shallow
12/18/2018
4.9
42.68
18
161
1.70
559
764
5.0
8.7
8.7
<0.1
0.82j
4
91.9
12.3
2.8
72.9
50.6
114
271
<0.5
0.15
39.8
0.53
0.35
0.16 P4,S1
0.91 B,SI
SY-04
Shallow
12/18/2018
3.7
42.96
18
239
1.10
165
370
8.0
25.2
25.2
<0.1
0.9j
39.9
46.1j
17
3.6
105
85.1
162
3260
<0.5
0.79
60.8
0.52
0.16
<0.025 P4
6.3
SY-05
Shallow
12/18/2018
4.7
39.73
18
215
3.70
82
287
5.1
<5
<5
<0.1
0.54j
3.2
54.6
17.7
2.2
76.8
91.7 M1
147
1220
0.46j
0.51
29.6
5.2
0.38
0.45 S1
1.6 B,S1
SY-BG-01
Shallow
12/18/2018
4.0
10.32
15
61
0.80
91
296
4.6
<5
<5
<0.1
<1
<5
<50
1.31
1.4
15.5
14.6
44
545
<0.5
0.2
44.7
0.33
0.21
0.031 SI
1.2 B,SI
US-01D
Deep
01/29/2018
7.2
50.85
14
330
0.20
17
222
0.2
119
119
<0.1
<1
<2.5
<50
37.4
5.2
83.5
4.9
165
<100
0.54
0.99 SI
14.8
<0.1
<0.08
<0.025
<0.5
U5-011)
Deep
04/27/2018
6.8
49.50
19
300
2.10
-11
195
0.5
106
106
<0.1
<1
<2.5
<50
32.9
5.2
73.8
3.8
149
<100
0.36j
0.63 SI
14.8
<0.1
<0.08
0.038 SI
0.63 S1
US-01D
Deep
07/30/2018
6.5
47.84
29
263
1.90
17
222
1.0
92.2
92.2
<0.1
<1
<2.5
<50
33.4
5.6
72.9
3.2
151
<100
0.12 j
0.44 SI
15.5
<0.1
<0.08
0.027 S1
0.25 j
U5-011)
Deep
10/22/2018
6.2
48.25
17
193
1.50
47
252
0.0
63
63
<0.1
<1
<2.5
<50
20.8
5.5
53.4
2.2
96
<100
<0.5
0.22
17.9
<0.1
<0.08
0.14
0.25 j,Sl
U5-01S
Shallow
01/29/2018
6.1
50.69
13
167
0.30
176
381
9.9
81.3
81.3
<0.1
<1
6.7
<50
7.16
5.4
69.6
4.9
95
<100
<0.5
6.7
67.7
<0.1
<0.08
<0.025
6.2
U5-01S
Shallow
04/27/2018
6.0
49.30
20
159
0.30
-133
72
8.5
44.3
44.3
0.21
1.1
27.8 D6
<50
6.28
5.3
60.8
2.3
76
287
<0.5
6.6
62.6
<0.1
<0.08
<0.025
0.31 j,Sl
US-01S
Shallow
07/30/2018
6.1
47.26
20
546
0.40
-95
110
5.9
141
141
<0.1
10.2
26.9
35.4j
21.5
10.7
162
39.6
311
211 SI
<0.5
3.7 Sl
172
<0.1
<0.08
<0.025
0.73
U5-01S
Shallow
10/22/2018
6.3
47.61
18
608
0.40
-139
66
4.1
Ill
111
<0.1
9.9
80.5
<50
20.8
12.1
175
12.8
282
<100
<0.5
2.9
193
<0.1
<0.08
<0.025
0.47 j,Sl
U5-02BR
Bedrock
01/29/2018
6.1
73.61
18
342
0.10
6
211
0.0
155
155
<0.1
1.1
<2.5
140
34.6
7.7
437
20.1
193
<100
<0.5
160
70.7
<0.1
<0.08
<0.025
<0.5
U5-02BR
Bedrock
04/30/2018
5.8
49.30
16
311
0.50
-5
200
3.7
130
130
<0.1
1.1
<2.5
129
37.3
8.3
319
25.2
198
165
<0.5
59.8
44.9
0.065j
0.049j
<0.025
0.46 j,SI
U5-02BR
Bedrock
07/31/2018
6.0
68.67
19
350
0.10
-10
195
9.9
145
145
<0.1
1.1
15.6
128
35
8.3
500
27.9
219
1450
<0.5
285
89
0.098j
0.063j
<0.025
0.84 S1
U5-02BR
Bedrock
10/29/2018
6.0
69.13
18
308
0.30
-217
-12
8.3
119
119
<0.1
1
9.3
114
33.4
7.8
362
21.3
184
414
0.17j
152
54
0.093j
0.19
<0.025
3.7
U5-02D
Deep
01/29/2018
6.8
70.26
16
546
0.20
128
333
7.9
176
176
<0.1
1.2
27.5
138
63.6
7.1
1180
72.6
312
261
<0.5
3160
138
<0.1
<0.08
<0.025
1.4 S1
U5-02D
Deep
04/30/2018
6.7
65.08
18
527
0.30
-113
92
6.1
141
141
<0.1
1.3
26
109
60.4
7.7
1430
74.5
306
146
<0.5
4390
141
<0.1
<0.08
0.028 SI
<0.5
U5-021)
Deep
07/31/2018
6.6
64.47
24
582
1.60
-114
92
9.7
327
327
0.085j
0.98j
28.5
122
65
7.3
1620
96.1
367
86.8j
<0.5
4650
156
<0.1
<0.08
<0.025
0.18 j,SI
U5-02D
Deep
10/29/2018
6.8
65.19
18
521
0.20
-352
-147
8.0
125
125
<0.1
1.3
16.6
128
59.4
6.8
1380
86.7
325
276
<0.5
4070
141
0.032j
<0.08
<0.025
0.25j
Page 40 of 45

TABLE 3-3
2018 COMPREHENSIVE GROUNDWATER QUALITY DATA
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS LLC, MOORESBORO NC
Analytical Parameters
INORGANIC PARAMETERS (TOTAL CONCENTRATION)
INORGANIC PARAMETERS (DISSOLVED CONCENTRATION WITH FILTER SIZE)
Cobalt
Copper
Iron
Lead
Lithium
Magnesium
Manganese
Mercury
Molybdenum
Nickel
Nitrate
+ Nitrite
Potassium
Selenium
Sodium
Thallium
Vanadium
Zinc
Aluminum
Antimony
Arsenic
Barium
Beryllium
Boron
Cadmium
Chromium
Cobalt
Reporting Units
ug/L
ug/L
ug/L
ug/L
ug/L
mg/L
ug/L
ug/L
ug/L
ug/L
mg-N/L
mg/L
ug/L
mg/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
15A NCAC 02L Standard
1*
1000
300
15
NE
NE
50
1
NE
100
NE
NE
20
NE
0.2*
0.3*
1000
NE
NE
NE
NE
NE
NE
NE
NE
NE
Background Threshold Values (Shallow Flow Zone)
10.65
6.569
765.3
1
NE
2.479
168.8
0.2
1
6.256
8.837
5
1
6.139
0.117
1.059
15
NE
NE
NE
NE
NE
NE
NE
NE
NE
Background Threshold Values (Deep Flow Zone)
9.041
9.453
559.7
1
NE
1.6
78.31
0.2
1
12.56
2.8
5
1
4.41
0.063
1.095
15.03
NE
NE
NE
NE
NE
NE
NE
NE
NE
Background Threshold Values (Bedrock Flow Zone)
1.497
5
6220
1
NE
2.328
89.4
0.2
1.716
5
0.92
5
1
1 7.42
0.1
0.37
10
NE
NE
NE
NE
NE
NE
NE
NE
NE
Sample ID
Sample Location
Aquifer Name
Sample
Collection Date
Analytical Results
M W-36S
Shallow
05/O1 2018
0.094 j
0.52 S1
312
0.24 SI
0.36 j
0.856
12
<0.2
<0.5
0.4 j
1.6
<5
<0.5
7.47
<0.1
0.49 51
<10
<100
<0.5
0.053 j
24
<0.1
40.2 j
<0.08
0.38 j
0.034 j
MW-36S
Shallow
08/06/2018
0.074 j
0.92
333
0.17
0.45 j
2.79
12.9
<0.2
0.13 j
0.23 j
0.15
<5
<0.5
3.4 j
<0.1
0.13 j
4.8 j
<100
<0.5
0.13
44.2
0.079 j
71.9
0.028 j
0.36 j
0.039 j
MW-36S
Shallow
11/O1/2018
0.11
1.9 B
217
0.18
0.34 j
1.8
11.4
<0.2
<0.5
0.72
4.6
<5
<0.5
1.4 j
<0.1
0.48
9 j
<100
<0.5
0.068 j
59
0.031 j
61
<0.08
0.38 j,S1
0.042 j
MW-38BR
Bedrock
01/26/2018
1
<0.5
2680
<0.1
18.6
21.3
235
<0.2
0.56
5.8
<0.02
9.13
<0.5
17.5
<0.1
<0.3
<10
<100
<0.5
0.85
35.7
<0.1
50
<0.08
1.7
0.88
MW-38BR
Bedrock
04/27/2018
0.92
0.64 SI
2570
<0.1
19.1
19.7
230
<0.2
0.72
5.5
0.027 SI
9.93
0.19 j
18
<0.1
0.12 j,SI
3.5 j,B
<100
0.33 j
0.75
34.3
<0.1
47.7 j
<0.08
0.18 j,S1
0.82
MW-38BR
Bedrock
07/31/2018
0.82
0.72
2950
0.13
14.5
19.1
256
<0.2
1.1
5
0.013 j
7.93
<0.5
17.6
<0.1
0.15 j
8.2 j
<100
<0.5
0.68 S1
33.4
<0.1
49.3 j
<0.08
0.21 j
0.79
MW-38BR
Bedrock
1O/22/2018
0.85
0.41 j,SI
2220
<0.1
12.2
17.2
259
<0.2
1.6
7.4
0.018 j
7.3
<0.5
17.2
<0.1
0.076 j
5.5 j,B
<100
<0.5
0.7 SI
31
0.019 j
44.9 j
0.051 j
0.42 j
0.79
MW-38D
Deep
01/26/2018
2.8
2.5
385
0.16SI
9.1
22.4
442
<0.2
<0.5
18.4
0.08 S3
7.46
<0.5
9.18
<0.1
0.72
15.9
130
<0.5
0.47
24.8
<0.1
198
0.32
1.7
2.6
MW-38D
Deep
04/27/2018
2.7
2.1
454
0.18
8.6
22.7
489
<0.2
0.57
22.1
0.06
7.39
0.23 j
9.34
0.036 j
0.55 51
7.8 j,B
<100
0.12 j
0.15
24
0.15
210
0.25
2.1
2.4
MW-38D
Deep
07/31/2018
2.5
2.8
533
0.21
6.7
22.8
407
<0.2
1
18.8
0.031
6.59
<0.5
9.18
<0.1
0.5
7.9 j
<100
<0.5
0.19 S3
22
0.052 j
226
0.3
0.42 j
2.4
MW-38D
Deep
1O/22/2018
2.5
2.1
94.1
<0.1
6.7
22.6
363
<0.2
0.29 j
16.9
0.035
6.2
<0.5
9
0.035 j
0.33
5.9 j,B
<100
<0.5
0.13 B,S1
21.3
0.081 j
218
0.31
0.35 j
2.3
MW-38S
Shallow
02/02/2018
4.7
0.6 SI
387
0.15
0.99
25.5
439
<0.2 MI
<0.5
3.1
0.6
<5
<0.5
6.38
<0.1
0.32
<10
<100
<0.5
0.14
33.4
0.21
109
0.2
2
3.9
MW-38S
Shallow
04/27/2018
2.6
0.21 j,SI
1290
0.13
1.8
4.94
235
<0.2
<0.5
2.9
0.14
<5
0.24 j
1.6 j
0.07 j
0.63S1
7.8 j,B
<100
<0.5
0.084 j
27.6
0.37
124
0.21
0.81 SI
2.5
MW-385
Shallow
07/31/2018
3.9
0.43 j
364
0.11
0.97
26
444
<0.2
0.16 j
1.4
0.56
3.67 j
0.41 j
6.96
0.037 j
0.24 j
4 j
<100
<0.5
0.13 SI
34
0.12
114
0.18
0.5 j
3.8
MW-38S
Shallow
1O/22/2018
4.5
9.6
85.2
0.097 j
0.64 j,SI
23.8
471
<0.2
0.47 j
4.9
0.66
3.2 j
<0.5
6.3
0.044 j
0.096 j
13.2 B
<100
<0.5
0.058 j,B,SI
32.8
0.18
94.6
0.19
0.17 j
4.4
MW-40BRU
Deep
01/26/2018
<0.1
<0.5
208
<0.1
3.5
4.4
252
<0.2
30.6
1.1 SI
<0.02
7.24
<0.5
7.17
<0.1
<0.3
<10
<100
<0.5
0.78
17.5
<0.1
<50
<0.08
<0.5
0.11
MW-40BRU
Deep
04/26/2018
0.029 j
0.72 SI
183
0.048 j
3.6
4.48
203
<0.2
30.6
4.4
0.037
7.24
<0.5
7.46
<0.1
0.34S1
16.6
<100
0.29 j
0.72
18
<0.1
<50
<0.08
0.78 SI
0.032 j
MW-40BRU
Deep
07/31/2018
0.035 j
0.74
195
<0.1
3
4.44
205
<0.2
29.5
0.49 j
0.039
7.13
<0.5
7.48
<0.1
0.26 j
23.2
<100
0.26 j
0.68 SI
18
<0.1
<50
<0.08
0.83 B
0.022 j
MW-40BRU
Deep
10/22/2018
0.034 j
1 SI
36.5 j
<0.1
2.9
4
89.8
<0.2
26.9
1.3
0.073
6.8
<0.5
6.6
<0.1
1.1
47
<100
0.22 j
0.62 SI
16.3
<0.1
<50
0.05 j
0.59
0.024 j
MW-40S
Shallow
01/26/2018
0.57
0.68SI
445
<0.1
0.56
13.7
27.5
<0.2
<0.5
2 S3
0.39
<5
<0.5
5.6
<0.1
0.46S1
<10
<100
<0.5
<0.1
68.8
<0.1
<50
<0.08
1.8
0.52
MW-40S
Shallow
04/26/2018
0.98
0.76 SI
613
0.15
0.68
13.5
41.4
<0.2
<0.5
1.8
0.39
2.61 j
0.58
5.63
0.078 j
0.81 51
2.9 j
<100
<0.5
0.086 j,SI
66.4
0.094 j
<50
0.051 j
1.2 SS
1
MW-40S
Shallow
07/31/2018
0.57
0.34 j
1180
0.15
0.57
13.7
32.8
<0.2
<0.5
0.86
0.45
2.95 j
0.39 j
5.78
0.068 j
0.59
3 j
<100
<0.5
<0.1
67.4
0.075 j
26.7 j
0.062 j
0.6 B
0.42
MW-40S
Shallow
10/22/2018
0.62
0.5 j,S1
354
0.15
0.76 j,S1
12.7
21.8
<0.2
<0.5
1.3
0.52
<5
0.39 j
5.4
0.073 j
1
3.9 j,B
56.3 j
<0.5
<0.1
67.2
0.098 j
27.5 j
0.076 j
0.63
0.42
MW-42DA
Deep
01/29/2018
0.5
0.52 S1
210
<0.1
30.2
7.34
92.1
<0.2
3.1
2.7
0.031 SI
19.4
<0.5
27.2
<0.1
1.1
<10
<100
<0.5
1
51.6
<0.1
<50
<0.08
<0.5
0.32
MW-42DA
Deep
04/30/2018
0.57
1 SS
347
0.18 SI
39.9
6.9
69.7
<0.2
2.9
8.2
0.018 j
20.3
<0.5
25.3
<0.1
1.5
3.5 j,S1
82.2 j
0.29 j
0.74
48.8
<0.1
<50
<0.08
4.8
0.45
MW-42DA
Deep
07/30/2018
0.14
1.2 S1
100 RO
<0.1
38.9
6.81
19.5 S1
<0.2
30.6
2.5
0.031
16.6
<0.5
18.4
<0.1
1.2
6.2 j
<100
0.2 j
0.34 SI
40.3
<0.1
<50
<0.08
0.23 j,S1
0.068 j
MW-42DA
Deep
10/23/2018
0.099 j
0.98 SS
46.4 j
<0.1
36.8
6.9
15.2
<0.2
17.3
1.9
0.014 j
17.1
<0.5
19
0.016 j
0.71
7 j
<100
<0.5
0.26
35.4
<0.1
<50
<0.08
0.15 j
0.065 j
MW-42S
Shallow
O1/29/2018
0.4
1.2 S1
432
0.14 SI
0.79
2.61
21.6
<0.2
<0.5
5.5
0.091 SI
<5
<0.5
<5
<0.1
<0.3
<10
<100
<0.5
3.9
34.5
<0.1
<50
<0.08
1.4
0.23
MW-42S
Shallow
04/30/2018
0.46
0.3 j,SI
139
0.031 j,S1
0.46 j
2.52
9.1
<0.2
0.09 j,S1
3.5
0.17
<5
<0.5
2.87 j
0.039 j
0.097 j,SI
6 j,S1
<100
<0.5
0.06 j
31.6
<0.1
<50
0.029 j
1.2 SI
0.46
MW-42S
Shallow
07/30/2018
0.19
1 SI
127 RO
0.045 j
0.42 j
2.62
6.8 SI
<0.2
4.5 SI
2
0.35
<5
<0.5
2.91 j
0.034 j
0.12 j,SI
7.1 j
<100
<0.5
0.074 j,SI
26.9
<0.1
<50
<0.08
1.2 SI
0.17
MW-42S
Shallow
10/23/2018
0.21
1.8 SI
123
0.12
0.41 j,S1
2.2
7.1
<0.2
3.4
2.3
0.11
<5
<0.5
2.8 j
0.038 j
0.42
5.9 j
<100
<0.5
<0.1
24.1
0.017 j
<50
<0.08
0.78
0.14
SY-01
Shallow
12/18/2018
17.1
0.26 j,S1
1380
0.13
0.54 j
12.6
8550
<0.2
<0.5
1.2
0.01 j,SI
2.85 j
0.58
5.86
0.7
0.07 j,S1
6.1 j
<100
<0.5
0.15
24.3
0.024 j
74.7
0.086
0.34 j
16.7
SY-02
Shallow
12/18/2018
2
0.17 j,SI
47.4 j
<0.1
0.52 j
9.56
8190
<0.2
<0.5
0.74
0.53
<5
<0.5
4.5 j
0.079 j
<0.3
3.2 j
<100
<0.5
0.13
33.8
0.052 j
<50
0.06 j
0.53
1.9
SY-03
Shallow
12/18/2018
3.2
35.2
130
0.2
2.5
4
1070
<0.2
<0.5
5.6
1.1
5.85
2.2
5.48
0.28
0.27 j,SI
6.8 j
III
<0.5
0.15
34.2
0.5
78.6
0.36
0.77
3.3
SY-04
Shallow
12/18/2018
9.7
3
4890
1.4
4.5
10.2
2630
<0.2
0.12 j
4.6
0.086 SI
4.88 j
<0.5
6.45
0.12
4.9
16.6
105
<0.5
0.47
43.7
0.33
38.7 j
0.15
0.74
8.9
SY-05
Shallow
12/18/2018
15.3
1.6
87.4
0.13
5.8
5.1
1140
0.25
<0.5
4.6
1.2
3.68 j
3
3.51 j
0.25
0.24 j,51
49.4
992
0.1 j
0.51
24.7
5.4
48.3 j
0.39
0.7
15.6
SY-BG-01
Shallow
12/18/2018
16.2
15.1
2340
1.2
5.1
1.06
49.2
<0.2
<0.5
29.3
0.15
2.52 j
<0.5
1.72 j
0.11
0.39SI
19.8
348
<0.5
0.048 j
37.6
0.34
<50
0.22
0.21 j
17.1
US-OSD
Deep
O1/29/2018
0.95
0.55 SI
474
<0.1
26.5
2.27
253
<0.2
0.78
2.4
0.063 SI
19.9
<0.5
7.67
<0.1
6.5
<10
<100
<0.5
0.8
10.2
<0.1
<50
<0.08
<0.5
0.97
US-01D
Deep
04/27/2018
1.1
0.65 SI
422
0.043 j
32.8
2.17
264
<0.2
0.5
3.2
0.091
19.5
<0.5
7.63
<0.1
1.9
7.1 j
<100
0.28 j
0.41
11.1
<0.1
<50
<0.08
0.46 j,S1
0.96
U5-011)
Deep
07/30/2018
1
1.1 S3
129 RO
0.055 j
14.4
2.28
254
<0.2
35.2
8.8
0.09
9.49
<0.5
5.57
0.027 j
1.6
4.3 j
<100
0.1 j
0.31 S3
14.8
<0.1
<50
<0.08
0.23 j,SI
0.96
US-01D
Deep
10/22/2018
0.78
0.53 SI
87.3
<0.1
9.2
1.9
157
<0.2
7.9
2.5
0.16
5.7
<0.5
5 j
0.059 j
0.82
2.9 j,B
<100
<0.5
0.24 B,SI
14.6
0.018 j
<50
<0.08
0.21 j
1.3
U5-01S
Shallow
O1/29/2018
3.1
1.6 SI
29200
0.11 SI
<0.5
2.75
1710
<0.2
<0.5
6.8
0.06 SI
<5
<0.5
<5
<0.1
<0.3
<10
<100
<0.5
5.9
61.6
<0.1
<50
<0.08
2.2
3.5
US-01S
Shallow
04/27/2018
2.3
0.24 j,SI
22900
0.084 j
0.37 j
2.27
1260
<0.2
<0.5
0.88 SI
0.041
<5
<0.5
3.25 j
<0.1
0.28 j,SI
<10
<100
<0.5
6.2
55.1
<0.1
<50
<0.08
<0.5
2.5
US-01S
Shallow
07/30/2018
38.1
2.7
184000 S3
1
<0.5
8.71
29200
<0.2
0.95 S3
1.5
0.15
<5
0.56
1.4 j
<0.1
0.9
<10
<100
<0.5
2.9 SI
159
<0.1
31 j
<0.08
0.55 SI
33.4
US-01S
Shallow
1O/22/2018
24.3
2.8
131000
0.36
<2.5
9.1
14200
<0.2
0.33 j
0.63
<0.02
<5
0.41 j
1.4 j
<0.1
0.48
<10
<100
<0.5
3.1
169
0.01 j
<50
<0.08
0.24 j
25.9
U5-02BR
Bedrock
01/29/2018
33.2
<0.5
6980
0.18SI
1.2
13.5
6950
<0.2
2.9
3.9
0.022 S3
<5
<0.5
<5
0.39SI
<0.3
<10
<100
<0.5
173
67.2
<0.1
130
<0.08
<0.5
35.9
U5-02BR
Bedrock
04/30/2018
19.1
0.22 j,S1
2910
0.28 SI
1.2
11
5680
<0.2
1.7
5.7
<0.02
3.24 j
<0.5
4.84 j
0.26
0.2 j,S1
13 SS
96.1 j
<0.5
125
54.5
0.062 j
125
<0.08
0.25 j,S1
25.7
U5-02BR
Bedrock
07/31/2018
33.4
0.42 j
9790
0.78
1.3
13.2
6650
<0.2
3.5
3.5
0.029
3.8 j
<0.5
4.48 j
0.42
0.76
6 j
<100
<0.5
285
71.5
0.082 j
120
0.07 j
0.3 j
32.7
U5-02BR
Bedrock
10/29/2018
22.6
0.62
5430
0.68
1.5 j
10.7
5750
<0.2
2.1
4.8
<0.02
3.3 j
<0.5
4.6 j
0.34
0.58
7.2 j
<100
0.15 j
150
46.5
0.06 j
103
0.16
<0.5
21
U5-02D
Deep
01/29/2018
6.3
<0.5
36600
0.13 SI
6.1
15.2
1290
<0.2
54.7
1.4
0.065 SI
7.18
<0.5
<5
<0.1
<1.5 D3
<10
221
<0.5
3240
148
<0.1
130
<0.08
1
6.6
US-02D
Deep
04/30/2018
2.4
0.12 j,SI
36200
0.077 j,S1
18.6
13.3
793
<0.2
91.5
<0.5
0.059
7.29
<0.5
2.86 j
<0.1
0.13 j,SI
<10
<100
<0.5
4430
132
<0.1
115
<0.08
<0.5
2.2
U5-02D
Deep
07/31/2018
2.3
0.13 j
40700
<0.1
23.8
14.1
757
<0.2
III
<0.5
0.07
7.66
<0.5
2.73 j
<0.1
0.16 j
<10
<100
<0.5
4540
141
<0.1
116
<0.08
<0.5
2.2
1.15-021)
Deep
10/29/2018
2.5
0.29 j
35500
0.37
18.3
12.7
754
<0.2
SOS
<0.5
<0.02
7.4
<0.5
2.6 j
I <0.1
0.43
<10
<100
<0.5
4070
129
0.01 j
118
<0.08
0.67 SS
2.4
Page 41 of 45

TABLE 3-3
2018 COMPREHENSIVE GROUNDWATER QUALITY DATA
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS LLC, MOORESBORO NC
Analytical Parameters
INORGANIC PARAMETERS (DISSOLVED CONCENTRATION WITH FILTER SIZE)
RADIONUCLIDES
OTHER PARAMETERS
Copper
Iron
Lead
Lithium
Manganese
Mercury
Molybdenum
Nickel
Phosphorus
Selenium
Strontium
Thallium
Vanadium
Zinc
Radium-226
Radium-228
Total
Radium
Uranium-238
Total Uranium
Uranium-238
(Dissolved)
Carbonate
Alkalinity
Fluoride
Phosphorus
Reporting Units
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
mg/L
ug/L
ug/L
ug/L
ug/L
ug/L
pCi/L
pCi/L
pCi/L
ug/mL
ug/mL
ug/mL
mg/L
mg/L
mg/L
15A NCAC 02L Standard
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
5^
NE
0.03^
NE
NE
2
NE
Background Threshold Values (Shallow Flow Zone)
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
2.58
NE
0.0005
NE
5
NE
NE
Background Threshold Values (Deep Flow Zone)
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
1.51
NE
0.0005
NE
5
NE
NE
Background Threshold Values (Bedrock Flow Zone)
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
3.1
NE
0.0005
NE
5
NE
NE
Sample ID
Sample Location
Aquifer Name
Sample
Collection Date
Analytical Results
MW-36S
Shallow
05/01 2018
0.48 j,S1
<50
<0.1
NA
<5
<0.2
<0.5
0.6 Sl
<0.05
<0.5
16.2
<0.1
0.12 j
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
MW-36S
Shallow
08/06/2018
0.87
<50
0.065 j
NA
3.3 j
<0.2
0.12 j
0.28 j
<0.05
<0.5
45.8
<0.1
0.24 j
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
MW-36S
Shallow
11/01/2018
0.84 SI
<50
<0.1
NA
6.4
<0.2
<0.5
0.54
<0.05
<0.5
39
<0.1
0.13 j
10.8
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
MW-38BR
Bedrock
01/26/2018
<0.5
2270
<0.1
NA
204
<0.2
<0.5
6.1
<0.05
<0.5
386
<0.1
<0.3
<10
0.945
2.72
3.665
<0.0005
<0.0005
NA
<5
<0.1
<0.05
MW-38BR
Bedrock
04/27/2018
0.28 j,S1
2110
<0.1
NA
189
<0.2
0.78
5.4
<0.05
<0.5
349
<0.1
0.097 j,S1
<10
1.21 SI
1.93
3.14
0.00015j
0.00015j
0.00014j
<5
0.073j
<0.05
MW-38BR
Bedrock
07/31/2018
0.22 j,S1
2320
0.049j
NA
227
<0.2
0.96
5
<0.05
<0.5
348
<0.1
0.072j
4.6j
1.16
2.59 B
3.75
0.00015j
0.00015j
0.00012j
<5
0.086j
<0.05
MW-38BR
Bedrock
10/22/2018
0.51 SI
2050
<0.1
NA
234
<0.2
1
5.8
<0.05
<0.5
330
<0.1
<0.3
10.9
1.14
1.92
3.06
NA
0.00016 j
NA
<5
0.085 j
<0.05
MW-38D
Deep
01/26/2018
2.8
408
0.38
NA
362
<0.2
<0.5
17.3
<0.05
<0.5
180
<0.1
0.89
12.3
0.774
0.228
1.002
<0.0005
<0.0005
NA
<5
<0.1
<0.05
MW-38D
Deep
04/27/2018
1.9 S1
130
0.07j
NA
382
<0.2
0.36j
19.7
<0.05
<0.5
175
0.041j
0.37 Sl
8j
0.34 U
0.789
1.13 U
0.00013j
0.00013j
0.0001j
<5
<0.1
<0.05
MW-38D
Deep
07/31/2018
2.5
34.7 j
0.065 j
NA
353
<0.2
0.51
16.9
<0.05
<0.5
183
<0.1
0.23 j
5.3 j
0.579 U
0.529 U
1.11 U
0.00012 j
0.00012 j
<0.0005
<5
<0.1
<0.05
MW-38D
Deep
10/22/2018
6.4
26.9 j
<0.1
NA
325
<0.2
0.21 j
17.7
<0.05
<0.5
186
0.028 j
0.15 j, BC,S1
4.8 j
1.04
0.419 U
1.46
NA
0.00011 j
NA
<5
<0.1
<0.05
MW-38S
Shallow
02/02/2018
0.73
90.2
<0.1
NA
359
<0.2
<0.5
2.7
<0.05
<0.5
71.9
<0.1
<0.3
<10
0.304
0.783
1.087
<0.0005
<0.0005
NA
<5
<0.1
<0.05
MW-38S
Shallow
04/27/2018
0.39 j,S1
817
<0.1
NA
214
<0.2
<0.5
2.7
<0.05
0.31 j
83.1
0.061 j
0.4 S1
11.4
0.184 U
-0.178 U
0.184 U
<0.0005
<0.0005
<0.0005
<5
<0.1 MI
<0.05
MW-38S
Shallow
07/31/2018
0.68 S1
<50
0.047j
NA
397
<0.2
0.11j
1.6
<0.05
0.26j
73.7
0.036j
<0.3
<10
0.339 U
0.378 U
0.717 U
<0.0005
<0.0005
<0.0005
<5
<0.1
<0.05
MW-38S
Shallow
10/22/2018
4.1
<50
<0.1
NA
436
<0.2
0.23 j
2.7
<0.05
<0.5
63.9
0.038 j
<0.3
6.6 j
0.317 U
0.0411 U
0.358 U
NA
<0.0005
NA
<5
<0.1
<0.05
MW-40BRU
Deep
01/26/2018
<0.5
172
<0.1
NA
263
<0.2
31
1.4S1
<0.05
<0.5
186
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
MW-40BRU
Deep
04/26/2018
1.7 Sl
<50
<0.1
NA
15
<0.2
29.6
3.4
<0.05
<0.5
176
<0.1
1.2
74.3
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
MW-40BRU
Deep
07/31/2018
2
<50
<0.1
NA
12.6
<0.2
26.3
1.7 B
<0.05
<0.5
168
<0.1
1.3
114
NA
NA
NA
NA
NA
NA
<5
<0.1
0.028 j
MW-40BRU
Deep
10/22/2018
1.4
<50
<0.1
NA
19.1
<0.2
26
1.5
0.03 j
<0.5
165
<0.1
1.2
102
NA
NA
NA
NA
NA
NA
<5
j <0.1
0.027 j
MW-40S
Shallow
01/26/2018
0.64 Sl
56.4
<0.1
NA
19.2
<0.2
<0.5
1.9 Sl
<0.05
<0.5
147
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
MW-40S
Shallow
04/26/2018
0.73 Sl
<50
<0.1
NA
33.5
<0.2
<0.5
1.7 SI
<0.05
0.39 j
148
0.066 j
0.21 j,S1
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
MW-40S
Shallow
07/31/2018
0.22 j,S1
<50
0.054 j
NA
15.4
<0.2
<0.5
0.62 B
<0.05
0.44 j
147
0.064 j
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
MW-40S
Shallow
10/22/2018
0.51 Sl
<50
<0.1
NA
16.2
<0.2
<0.5
0.8
<0.05
0.34 j
146
0.057 j
0.14 j,S1
4 j
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
MW-42DA
Deep
01/29/2018
0.77
<50
<0.1
NA
52.4
<0.2
2.8
2.8
<0.05
<0.5
112
<0.1
IA Sl
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
MW-42DA
Deep
04/30/2018
1.2 S1
SOS
0.072 j
NA
60.4
<0.2
2.7
6.9
<0.05
<0.5
108
<0.1
1.4
3.5 j
NA
NA
NA
0.0019
0.0019
0.0017
<5
0.071 j
0.042 j
MW-42DA
Deep
07/30/2018
0.92 Sl
<50
<0.1
NA
7.7
<0.2
29.8
1.8
<0.05
<0.5
106
<0.1
IA Sl
5.6 j
NA
NA
NA
NA
NA
NA
<5
0.056 j
<0.05 M1
MW-42DA
Deep
10/23/2018
1.5 Sl
<50
<0.1
NA
11.5
<0.2
16.1
1.5
<0.05
<0.5
99
<0.1
0.43
6.6 j
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
MW-42S
Shallow
01/29/2018
1.3
<50
<0.1
NA
13.4
<0.2
<0.5
2.7
<0.05
<0.5
34.1
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
MW-42S
Shallow
04/30/2018
1.6 SI
<50
<0.1
NA
7.3
<0.2
<0.5
2.8 SS
<0.05
<0.5
35.3
0.043 j
0.094 j,Sl
7.4 j
NA
NA
NA
<0.0005
<0.0005
<0.0005
<5
<0.1
<0.05
MW-42S
Shallow
07/30/2018
1.1 Sl
<50
<0.1
NA
4.7 j
<0.2
4.1S1
1.9
<0.05
<0.5
32
0.036 j
0.14 j,S1
3.6 j
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
MW-42S
Shallow
10/23/2018
1.3 S1
<50
<0.1
NA
3.2 j
<0.2
2.7
1.7
<0.05
<0.5
29.4
0.034 j
<0.3
13.2
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
SY-01
Shallow
12/18/2018
1.3 B,S1
869
<0.1
NA
7610 Ml
<0.2
<0.5
1.6
<0.05
0.56
65.5
0.69
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
0.027 j
SY-02
Shallow
12/18/2018
0.42 j,B,SI
<50
<0.1
NA
7550
<0.2
<0.5
0.79
<0.05
<0.5
17.2
0.079 j
<0.3
3 j
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
SY-03
Shallow
12/18/2018
35.9
30.4 j
0.12
NA
933
<0.2
<0.5
5.6
0.032 j
2.2
63.1
0.28
0.28 j,S1
6.4 j
NA
NA
NA
NA
NA
NA
<5
<0.1
0.031 j
SY-04
Shallow
12/18/2018
1.3 B,S1
1980
<0.1
NA
2300
<0.2
<0.5
3.1
0.028 j
<0.5
94.4
0.076 j
0.39 Sl
9 j
NA
NA
NA
NA
NA
NA
<5
<0.1
0.057
SY-05
Shallow
12/18/2018
2.5 S1
<50
<0.1
NA
1020
0.14j
<0.5
4.1
0.028j
3
66.9
0.25
0.15 j,S1
49.3
NA
NA
NA
NA
NA
NA
<5
0.41 MI
0.033j
SY-BG-01
Shallow
12/18/2018
15.5
224
0.49
NA
41.9
<0.2
<0.5
30.5
0.027 j
<0.5
12.8
0.11
0.073 j,S1
18
NA
NA
NA
NA
NA
NA
<5
<0.1
0.0293
US-OSD
Deep
01/29/2018
<0.5
293
<0.1
NA
197
<0.2
<0.5
2.3
<0.05
<0.5
55.2
<0.1
5.2
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
US-01D
Deep
04/27/2018
0.33 j,S1
247
<0.1
NA
200
<0.2
0.42 j
3
<0.05
<0.5
50.6
<0.1
1.7
3.3 j
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
U5-011)
Deep
07/30/2018
1 S3
88.1
<0.1
NA
229
<0.2
26.4
5.9
<0.05
<0.5
58.6
0.028 j
1 51
4.4 j
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
US-01D
Deep
10/22/2018
0.86 Sl
65.2
<0.1
NA
168
<0.2
4.5
3.1
<0.05
<0.5
38.8
0.072 j
0.62 BC,S1
9.8 j
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
U5-01S
Shallow
01/29/2018
0.68
30400
<0.1
NA
1810
<0.2
<0.5
3.1
<0.05
<0.5
67.5
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
US-01S
Shallow
04/27/2018
0.11 j,S1
24800
<0.1
NA
1320
<0.2
<0.5
0.72
<0.05
<0.5
55.5
<0.1
0.15 j,S1
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
US-01S
Shallow
07/30/2018
0.16 j,S1
93000
0.055 j,S1
NA
13900
<0.2
0.86 SI
1.6
<0.05
0.33j
153
<0.1
0.73 S3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
0.098
US-01S
Shallow
10/22/2018
<0.5
120000
0.096 j,S1
NA
13300
<0.2
0.16j
0.83
0.026j
0.39j
153
<0.1
0.4 BC,S1
4.5j
NA
NA
NA
NA
NA
NA
<5
<0.1
0.039j
U5-02BR
Bedrock
01/29/2018
<0.5
6700
0.1 B
NA
6820
<0.2
3.1
3.7
<0.05
<0.5
433
0.42
<0.3
<10 B
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
U5-02BR
Bedrock
04/30/2018
0.12 j,S1
5100
0.13
NA
5790
<0.2
2.4
4.8
<0.05
<0.5
368
0.28
1 0. 18 j,S1
11.1
NA
NA
NA
0.0011
0.0011
0.00097
<5
0.056j
<0.05
U5-02BR
Bedrock
07/31/2018
0.48 j,S1
8050
0.25
NA
6230
<0.2
3.5
3
<0.05
<0.5
459
0.41
0.072j
6.6 j,B
NA
NA
NA
NA
NA
NA
<5
0.069j
0.033j
U5-02BR
Bedrock
10/29/2018
0.71
4580
0.19
NA
5350
<0.2
1.9
4
<0.05
<0.5
327
0.3
<0.3
6.7 j
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
U5-02D
Deep
01/29/2018
<0.5
35100
0.13 B
NA
1250
<0.2
56
0.7 S1
0.06
<0.5
1180
<0.1
0.42 SI
<10
0.299 SI
1.19 B
1.489
<0.0005
<0.0005
NA
<5
0.43
<0.05
US-02D
Deep
04/30/2018
<0.5
34500
<0.1
NA
764
<0.2
86.7
<0.5
0.21
<0.5
1360
<0.1
0. 12 j,S1
4.7j
0.25 U
0.53 U
0.78 U
0.00014j
0.00014j
0.00011j
<5
0.58
0.22
U5-02D
Deep
07/31/2018
<0.5
37100
<0.1
NA
711
<0.2
106
0.18j
0.027j
<0.5
1470
<0.1
0.11j
<10
0.513 U
0.16 U
0.673 U
0.00023j
0.00023j
0.00022j
<5
0.45
0.32
US-021)
Deep
10/29/2018
0.17j
1 33500
<0.1
NA
713
<0.2
105
0.45j
0.046j
<0.5
1290
<0.1
0.075j
3.1j
0.392 U
0.472 U
0.864 U
NA
0.00031j
NA
<5
0.5
0.048j
Page 42 of 45

TABLE 3-3
2018 COMPREHENSIVE GROUNDWATER QUALITY DATA
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS LLC, MOORESBORO NC
Analytical Parameters
FIELD PARAMETERS
WATER QUALITY PARAMETERS
SELECTED 40CFR257 APPENDIX III CONSTITUENTS plus Sr
INORGANIC PARAMETERS (TOTAL CONCENTRATION)
pH
Water
Level
Temp
Spec
Cond
DO
ORP
Eh
Turbidity
Alkalinity
Bi-
carbonate
Alkalinity
Sulfide
Total
Organic
Carbon
Total
Suspended
Solids
Boron
Calcium
Chloride
Strontium
Sulfate
Total
Dissolved
Solids
Aluminum
Antimony
Arsenic
Barium
Beryllium
Cadmium
Chromium
(VI)
Chromium
Reporting Units
S.U.
ft
Deg C
umhos/cm
mg/L
mV
mV
NTUs
mg/L
mg/L
mg/L
mg/L
mg/L
ug/L
mg/L
mg/L
ug/L
mg/L
mg/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
15A NCAC 02L Standard
6.5-8.5
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
700
NE
250
NE
250
Soo
NE
1*
SO
700
4*
2
SO
10
Background Threshold Values (Shallow Flow Zone)
4.4-6.1
NE
NE
NE
NE
NE
NE
NE
13.67
14.42
0.1
1
NE
50
3.221
7.7
36.71
1.169
75.47
253
1
0.5
73.03
0.188
1
0.452
3.968
Background Threshold Values (Deep Flow Zone)
4.8-6.1
NE
NE
NE
NE
NE
NE
NE
19.74
18.13
0.1
1
NE
50
11
5.1
56.14
10
70.98
290
1
0.763
23
0.2
1
0.16
1.791
Background Threshold Values (Bedrock Flow Zone)
5.4-7.4
NE
NE
NE
NE
NE
NE
NE
53
68.82
0.1
1
NE
50
16
8.656
107.1
15.1
120
208.2
1
1
19.33
1
1
0.12
3.567
Sample ID
Sample Location
Aquifer Name
Sample
Collection Date
Analytical Results
U5-02S-SLA
Ash Pore Water
10/29/2018
6.4
61.41
19
623
1.90
-59
146
9.4
165
165
<0.1
1
22.1
319
61.7
5.5
1930
130
469
<100
0.37j
779
93
0.024j
0.083
<0.025
1.2
U5-04BRA
Bedrock
01/31/2018
11.8
96.44
9
805
1.80
70
275
5.8
187
<5
<0.1
2.7
4.3
<50
20.6
7
155
38.5
270
2060
3.9
1.6
13.2
<0.1
<0.08
12.1
19.6
U5-04BRA
Bedrock
05/01/2018
10.9
77.05
31
676
0.60
-244
-39
9.0
173
22.1
<0.1
2.6
3.6
<50
21.1
6.2
131
43.5
279
1890
4.9
2
11.8
<0.1
<0.08
8.6
20
U5-04BRA
Bedrock
08/01/2018
10.9
78.06
29
654
2.50
79
284
8.1
161
<5
<0.1
3
4.1
25.1j
19.3
6
152
53
290
2300
4.2
1.9
18.8
<0.1
<0.08
14.3
18.6
U5-04BRA
Bedrock
11/01/2018
11.3
10.75
20
668
2.00
-91
114
9.8
155
<5
<0.1
3.3
5.2
<50
16.3
5.2
134
52.6
296
1900
50.2
2.1
15
0.019j
<0.08
7.5
8.6 BC
U5-04D
Deep
05/01/2018
8.6
14JM
22
222
0.50
-10
196
16.0
58.9
58
<0.1
.3
5.6
37.4
<1
88.8
47.2
.7
1.4
17.4
<0.1
<0.08
1. 11
8
U5-04D
Deep
08/01/2018
7.3
63.07
23
265
1.10
-35
170
7.1
64.8
64.8
<0.1
3.1
4.1
26.2j
40.3
0.62j
117
63.9
178
575
0.81
1.4
25.4
<0.1
<0.08
0.16 S1
2.1
U5-04D
Deep
11/01/2018
7.2
63.70
20
276
0.50
-65
140
3.1
76.1
76.1
<0.1
3.3
2.7
26.2 j
41.5
0.69 j
122
61.8
181
107
0.75
1.3
24.1
<0.1
<0.08
0.13
2 B,BC
U5-04S
Shallow
01/31/2018
5.5
67.51
8
82
3.30
115
320
9.0
15.4
15.4
<0.1
<1
9.6 D6
58.2
6.5
3
10.9
11.5
56
284
<0.5
0.1
30
0.12
<0.08
2.1
5.1
U5-04S
Shallow
05/01/2018
5.3
66.10
26
838
2.70
-109
96
9.5
14.7
14.7
<0.1
<1
16.1
53.1
6.9
3.2
33
12.9
64
788
0.22 j
0.19
22.9
0.1
0.034 j
1.9 Sl
3.7
U5-04S
Shallow
08/01/2018
5.4
63.58
19
118
2.80
31
236
7.0
23
23
<0.1
<1
6.1
151
9.82
3.9
9.3
22.5
74
643
<0.5
0.11
19.5
<0.1
<0.08
3.6
3.1
US-045
Shallow
11/01/2018
5.4
63.91
22
108
1.60
176
381
8.5
28.3
28.3
<0.1
<1
10.6
136
9.6
3.5
10.5
18.2
84
634
<0.5
0.23
26.4
0.085 j
<0.08
2.3
4.2 BC
U5-05BR
Bedrock
01/30/2018
9.8
67.41
5
1762
0.80
88
293
3.0
111 MI
5.8
<0.1
1.3
<2.7
407
95.6
351
1650
639
1690
<100
2.9
15.1
48.4
<0.1
<0.08
0.033 S1
5
U5-05BR
Bedrock
05/01/2018
9.3
66.92
26
2817
0.30
-16
189
2.2
90.5
45.1
<0.1
1.4
<2.5
351
93.2 M1
312
1280
569
1550
<100
3.6
15.1
34
<0.1
<0.08
0.11 S1
10.4
U5-05BR
Bedrock
08/02/2018
8.7
66.46
27
2440
0.80
-92
113
7.5
102
72.7
<0.1
0.98j
<5
449
83.2 MI
305
1360
606
1420
112 SI
2.4
10.7
39.7
<0.1
<0.08
<0.025
1.4
U5-05BR
Bedrock
10/31/2018
8.3
67.30
24
2287
0.70
73
278
2.7
113
107
<0.1
1.3
<2.6
490
90
225
1280
507
1320
<100
3.8
10.5
38.7
<0.1
<0.08
0.094
0.82 S1
U5-05D
Deep
01/30/2018
6.3
62.04
11
700
0.90
-18
187
9.9
47.6
47.6
<0.1
2
8.1 SI
363
80.7
5.2
201
277
552
208
<0.5
2.9
15.8
<0.1
<0.08
<0.025
1.6 SI
U5-05D
Deep
05/01/2018
6.2
61.45
32
518
1.30
58
263
7.9
48.2
48.2
<0.1
2.1
17
213
68.3
3.2
121
170
368
164
0.39j
0.88
12.9
<0.1
0.045j
<0.025
2
U5-05D
Deep
08/02/2018
6.2
61.40
30
632
1.40
-10
195
9.8
95.7
95.7
<0.1
1.6
6.7
409
78.6
5.1
256
214
467
184 SI
0.14j
1.6
17.7
<0.1
0.055j
<0.025
1.5
U5-05D
Deep
10/31/2018
6.2
61.32
25
647
1.30
-15
191
9.9
64
64
<0.1
0.83j
4.1
454
75
4.8
222
205
433
260
<0.5
1.1
15.8
0.07j
0.18
<0.025
15.8
U5-06D
Deep
01/30/2018
5.8
51.51
16
441
0.30
27
232
2.0
27.5
27.5
<0.1
1.8
6 S1
157
40.5
4.6
428
171
324
208
<0.5
1
25
0.28
<0.08
<0.025
1.1 S1
U5-06D
Deep
05/01/2018
6.4
50.92
20
458
0.30
-40
165
3.1
96.5
96.5
<0.1 M1
7.5
7.8 D6
112
63.9
2.7
254
103 M1
302
136
0.2j
3.1
31.2
0.083j
<0.08
<0.025
1.8
U5-06D
Deep
08/01/2018
5.2
50.88
21
484
0.60
-184
22
6.8
11.7
11.7
0.35
0.59j
3.4
207
43
6.2
527
208
337
875
<0.5
0.58
32.3
0.86
<0.08
<0.025
1.2
U5-06D
Deep
10/31/2018
6.1
50.55
20
402
0.80
-68
137
4.1
45.6
45.6
0.066j
4.1
<5
155
50.9
4.2
343
133
296
163
<0.5
2.3
28.6
0.12
<0.08
0.045
1 SI
U5-08BR
Bedrock
01/30/2018
10.4
0.40
8
348
1.40
45
250
3.7
122
43.7
<0.1 MI,R1
<1
9.4 SI
<50
12.4
3.2
252
43.9
218
138
1.1
3.8
20.7
<0.1
<0.08
0.54 S1
0.92 S1
U5-08BR
Bedrock
04/27/2018
10.3
7.89
16
179
1.40
77
282
1.8
88.1
55.8
<0.1
1
8
28.4j
9.98
3.1
287
54.5
207
131
1
3.3
24.6
<0.1
<0.08
0.37 S1
0.73 S1
U5-08BR
Bedrock
08/07/2018
8.4
27.50
22
177
1.00
64
269
2.4
71.5
71.5
<0.1
<1
<5
37.3 j
14.7
1.4
32.8
13.3
124
102
1.5
3.9
3.2 j
<0.1
<0.08
0.69
1.4
U5-08BR
Bedrock
11/01/2018
10.4
8.28
20
309
0.40
-169
36
9.1
89.8
11.4
<0.1
0.95 j
13.1
29.2 j
10.2
3.1
277
38.9
198
120
1
2.6
26.9
<0.1
<0.08
0.39
1.2 B,BC,S1
U5-08D
Deep
01/30/2018
6.0
8.60
9
84
1.10
33
238
0.6
33.5
33.5
<0.1
<1
<2.5
<50
7.7
3.5
38.2
2.2
61 D6
<100
<0.5
0.11 S1
10.9
<0.1
<0.08
1.1 S1
1.2 S1
U5-08D
Deep
04/27/2018
6.0
7.57
17
92
1.90
-98
107
1.2
32.1
32.1
<0.1
<1
<2.5
43.9 j
8.03
3.4
41.1
1.9
73
<100
<0.5
0.083 j, SI
12.8
<0.1
<0.08
0.97 S1
1.3 S1
U5-08D
Deep
08/01/2018
5.9
8.45
25
83
0.90
48
253
1.0
35.2
35.2
<0.1
<1
<2.5
43.5 j
8.19
3.8
40.1
2.1
69
<100
<0.5
0.11
12
<0.1
<0.08
1 SI
1.2
U5-08D
Deep
10/26/2018
6.2
8.23
13
82
1.70
-17
188
0.5
31.6
31.6
<0.1
<1
<2.6
40.5 j
8.1
3.6
38.1
2.1
83
<100
<0.5
0.11
12
0.019 j
<0.08
1.2
1.3
U5-08S
Shallow
01/30/2018
6.5
6.53
10
371
0.20
-88
117
1.0
146
146
<0.1
1.5
<2.5
<50
52.1
5.9
144
43.3
215
<100
<0.5
11.2
78
<0.1
<0.08
<0.025
<0.5
US-OSS
Shallow
04/27/2018
6.4
5.73
15
333
0.50
-80
125
1.9
122
122
0.29
1.4
<2.5
31.4j
48.4
5.3
133
36.5
192
<100
<0.5
10.2
63.8
<0.1
<0.08
<0.025
0.25 j,S1
U5-08S
Shallow
08/01/2018
6.5
6.70
25
381
0.30
-102
103
1.6
169
169
0.078 j
1.3
3.9
40.6 j
52.7
5.5
165
21.6
219
<100
1
<0.5
16
92.6
<0.1
<0.08
<0.025
<0.5
U5-08S
Shallow
10/26/2018
6.6
5.85
14
401
0.40
-114
91
1.7
162
162
<0.1
1.9
5.4
43.9j
54
5.2
175
11.3
223
<100
0.13j
1 13.6
136
<0.1
<0.08
<0.025
0.15j
Prepared by: BER Checked by: SMD
Page 43 of 45

TABLE 3-3
2018 COMPREHENSIVE GROUNDWATER QUALITY DATA
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS LLC, MOORESBORO NC
Analytical Parameters
INORGANIC PARAMETERS (TOTAL CONCENTRATION)
INORGANIC PARAMETERS (DISSOLVED CONCENTRATION WITH FILTER SIZE)
Cobalt
Copper
Iron
Lead
Lithium
Magnesium
Manganese
Mercury
Molybdenum
Nickel
Nitrate
+ Nitrite
Potassium
Selenium
Sodium
Thallium
Vanadium
Zinc
Aluminum
Antimony
Arsenic
Barium
Beryllium
Boron
Cadmium
Chromium
Cobalt
Reporting Units
ug/L
ug/L
ug/L
ug/L
ug/L
mg/L
ug/L
ug/L
ug/L
ug/L
mg-N/L
mg/L
ug/L
mg/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
15A NCAC 02L Standard
1*
1000
300
15
NE
NE
50
1
NE
100
NE
NE
20
NE
0.2*
0.3*
1000
NE
NE
NE
NE
NE
NE
NE
NE
NE
Background Threshold Values (Shallow Flow Zone)
10.65
6.569
765.3
1
NE
2.479
168.8
0.2
1
6.256
8.837
5
1
6.139
0.117
1.059
15
NE
NE
NE
NE
NE
NE
NE
NE
NE
Background Threshold Values (Deep Flow Zone)
9.041
9.453
559.7
1
NE
1.6
78.31
0.2
1
12.56
2.8
5
1
4.41
0.063
1.095
15.03
NE
NE
NE
NE
NE
NE
NE
NE
NE
Background Threshold Values (Bedrock Flow Zone)
1.497
5
6220
1
NE
1 2.328
89.4
0.2
1.716
5
0.92
5
1
1 7.42
0.1
0.37
10
NE
NE
NE
NE
NE
NE
I NE
NE
NE
Sample ID
Sample Location
Aquifer Name
Sample
Collection Date
Analytical Results
U5-02S-SLA
Ash Pore Water
10/29/2018
10.9
0.27 j
50500
<0.1
79
26
1010
<0.2
571
8.5
<0.02
11.6
0.54
3.1 j
2.4
0.28 j
11.5
<100
0.3 j
760
84.6
0.017 j
301
0.088
0.15 j,S1
8
US-04BRA
Bedrock
01/31/2018
0.41
6
207
<0.1
53.8
<0.1
<5
<0.2
11
7.3
0.12
37
0.52
56.3
<0.1
23.1
<10
1880
4.8
1.7
11.4
<0.1
<50
<0.08
19.4
0.37
U5-04BRA
Bedrock
05/01/2018
0.48
5.9
389
0.22 SI
53.8
<0.1
6.9
<0.2
9.5
8.7
0.24
37.5
0.5 j
51.4
<0.1
22.6
20.6
1720
5.2
1.9
12.6
<0.1
<50
<0.08
12
0.3
U5-04BRA
Bedrock
08/01/2018
0.53
8
627
0.17
65.7
0.126
13.2
<0.2
39
9.8
0.56
44.6
0.56
48.3
<0.1
20.5
18.7
1540
4.3
1.9
11.5
<0.1
25.7 j
<0.08
8.1
0.32
US-04BRA
Bedrock
11/01/2018
0.46
5.8
310
0.2
81.1
0.12
5
<0.2
33.1
2.7
0.44
46.6 M1
0.53
48.8
0.055 j
21.9
12.9
1650
47.8
1.9
13.2
0.01 j
<50
<0.08
6.7
0.33
U5-04D
Deep
05/01/2018
0.24
.7 S1
1200
0.28 S3
5.6
0.852
4.6
<0.2
1.1
4.8
0.45
9.64
<0.5
2.7 j
<0.1
1.5
55
236
0.67
1.4
13.3
<0.1
0.08
4.9
0.18
US-04D
Deep
08/01/2018
0.28
2.9
1000
0.097 j
9.1
1.08
27.9
<0.2
27.8
12
0.48
12.5
0.17 j
3.48 j
<0.1
1.8
60.7
132
0.9
1.3
22
<0.1
27.3 j
<0.08
1.5 Sl
0.16
U5-04D
Deep
11/01/2018
0.28
2.2
216
<0.1
10
1
20.7
<0.2
24.4
7.6
0.39
12.3
<0.5
4.3 j
<0.1
1.3
51.3
<100
0.67
1.3
23.6
<0.1
26.8 j
<0.08
1.3
0.13
U5-04S
Shallow
01/31/2018
1.3
<0.5
292
0.18 SI
1.3
2.67
36.6
<0.2
<0.5
3.9
0.47
<5
0.55
<5
<0.1
<0.3
<10
<100
<0.5
<0.1
26.8
<0.1
57.1
<0.08
2.7
0.9
U5-04S
Shallow
05/01/2018
1
0.44 j,S1
849
0.19 S3
0.92
2.9
25.7
<0.2
<0.5
1.7
0.53
<5
0.65
2.89 j
0.047 j
0.28 j,S1
17.8
<100
0.17 j
0.068 j
19.5
0.047 j
65.1
<0.08
2.1
0.81
US-04S
Shallow
08/01/2018
1.1
0.57
616
0.12
0.95
4.11
18.5
<0.2
<0.5
0.81
0.7
<5
0.64
3.13 j
<0.1
0.22 j
2.9 j
<100
<0.5
0.071 j
16.2
0.054 j
138
<0.08
2.5 S1
0.97
U5-04S
Shallow
11/01/2018
1.2
0.91 B
574
0.3
1.8 j
3.9
17.3
<0.2
<0.5
1.5
0.66
<5
0.5 j
3.1 j
0.03 j
1.1
4 j
<100
0.12 j
0.074 j
22.6
0.055 j
137
<0.08
2.5
0.88
U5-05BR
Bedrock
01/30/2018
1.5
2 S1
63.4
<0.1
75.4
4.34
<5
<0.2
86.5
10.7
<0.02
180
1.9
295
<0.1
17.1
<10
<100
3.2
17.4
40.6
<0.1
336
<0.08
3.6
1.9
U5-05BR
Bedrock
05/01/2018
2.5
2.2 S1
39.5 j
0.082 j,S1
71.4
6.99 M1
4.2 j
<0.2
92.8
17.7
2.4
169
1.8
263
0.031 j
14.7
2.8 j
<100
3.3
15
42.7
<0.1
386
<0.08
1.7
2.8
U5-05BR
Bedrock
08/02/2018
1.1
8.8
93
0.19
62.3
10.5
41.9
<0.2
137
13.2
2.1
153 M6
1.5
247 M6
<0.1
5.4
7.7 j
<100
2.3
9.9
35.8
<0.1
426
<0.08
<0.5
1.2
U5-05BR
Bedrock
10/31/2018
1.9
2.8
<50
0.16
59.2
12.3
89.5
<0.2
105
12.9
2.5
140
0.99
223
0.023 j
5.8
6.2 j
<100
3.6
9.9
35.9
<0.1
447
<0.08
0.2 j,S1
1.8
US-051)
Deep
01/30/2018
11.3
0.82 S1
19600
0.3
31.8
12.8
4010
<0.2
0.64
31.7
0.085
9.43
<0.5
22.4
<0.1
0.45 S3
52.4
<100
<0.5
1.6
13.4
<0.1
297
<0.08
<0.5
9.6
U5-05D
Deep
05/01/2018
5.3
2 S1
13600
0.27 SI
23.6
9.59
2310
<0.2
0.82
22.8
0.13
8.51
<0.5
13.2
<0.1
0.65
114
<100
0.29 j
1.1
14.7
<0.1
231
0.048 j
0.76
7
US-051)
Deep
08/02/2018
20.5
1.3
9380
0.36
27
12
3240
<0.2
21.4
60.7
0.068
8.96
<0.5
19.9
<0.1
0.47 B
50.2
<100
<0.5
0.96
11.3
0.042 j
415
0.041 j
0.46 j
21.9
U5-05D
Deep
10/31/2018
45.8
1.8
10600
0.41
32.2
13.7
4470
<0.2
5.3
128
<0.02
8.9
<0.5
13.9
<0.1
0.82
36.5
<100
0.13 j
0.49
12.8
0.059 j
376
0.073 j
0.92 SI
18.1
US-06D
Deep
01/30/2018
30.2
<0.5
15300
<0.1
23.6
12.8
1500
<0.2
0.77
12
0.052
11.3
<0.5
5.72
<0.1
1.3 S1
117
184
<0.5
0.76
23.4
0.39
169
<0.08
1
35.9
U5-06D
Deep
05/01/2018
14.3
1.1 S1
7310
0.11 S3
29.4
9.48
708
<0.2
1.2
6.6
0.016 j
13.3
<0.5
5.01
0.05 j
2.3
870
70.6 j
0.28 j
2.7
34
0.067 j
116
<0.08
1.6
18.2
US-06D
Deep
08/01/2018
37.5
0.44 j
19400
0.13
12.7
16.3
2050
<0.2
3.5
15.9
<0.02
9.62
0.19 j
6.72
0.088 j
1
96.7
715
<0.5
0.5
26.7
0.84
183
<0.08
0.49 j,S1
35.9
U5-06D
Deep
10/31/2018
20.7
0.84
10400
<0.1
19.8
11.1
1170
<0.2
1.9
9.7
<0.02
9.8
<0.5
4.8 j
<0.1
1.1
184
113
<0.5
1.4
26.8
0.15
158
<0.08
0.86 S1
25.2
US-08BR
Bedrock
01/30/2018
0.26
1.1 SS
77.3
0.14
52.2
0.836
<5
<0.2
5.9
2.3 S1
0.1
40.5
<0.5
30.6
<0.1
3.1
10.3
<100
1
3.5
18.4
<0.1
<50
<0.08
<0.5
0.13
U5-08BR
Bedrock
04/27/2018
0.23
1.1 S1
99.2
0.15
55.4
0.914
3.6j
<0.2
5.5
1.8
0.17
42.3
0.25j
28.8
<0.1
3.1
23.7 B
<100
1
3.1
20.7
0.039j
26.1j
<0.08
0.5 S1
0.11
U5-08BR
Bedrock
08/07/2018
0.048 j
0.48 j
46.8 j
<0.1
11.3
0.33
<5
<0.2
10.4
1.6
0.024
5.27
0.22 j
22.6
<0.1
2.6
5.7 j
60.4 j
1.4
3.8
3.4 j
<0.1
34.1 j
<0.08
1.2
0.044 j
U5-08BR
Bedrock
11/01/2018
0.18
1.9 B
103
0.12
51.8
0.39
2.8 j
<0.2
4.9
1.8
0.16
39.9
<0.5
26.1
<0.1
3.1
13.6
<100
0.98
2.5
22.4
<0.1
29 j
<0.08
0.51 SI
0.1
US-08D
Deep
01/30/2018
0.1
<0.5
<50
<0.1
1.8
2.14
9.1
<0.2
<0.5
1 SI
0.45
<5
<0.5
<5
<0.1
0.8 Sl
<10
<100
<0.5
<0.1
10.4
<0.1
<50
<0.08
1
<0.1
U5-08D
Deep
04/27/2018
0.21
0.21 j,S1
<50
<0.1
1.4
2.27
10.5
<0.2
0.095 j
1.7
0.44
<5
<0.5
4.01 j
<0.1
0.7 S1
7.5 j
<100
<0.5
0.09 j
10.9
<0.1
38.1 j
<0.08
1.2 S1
0.14
US-08D
Deep
08/01/2018
0.1
0.16 j
<50
<0.1
1.8
2.24
6.4
<0.2
<0.5
0.54
0.43
<5
<0.5
4.37 j
<0.1
0.51
3.2 j,B,SI
<100
<0.5
0.074 j
10.6
<0.1
40.1 j
<0.08
1 SI
0.045 j
U5-08D
Deep
10/26/2018
0.19
0.2 j
<50
<0.1
1.4 j
2.3
7.6
<0.2
<0.5
1.4
0.49
<5
<0.5
4.1 j
0.02 j
0.59
7.9 j
<100
<0.5
0.08 j
10.8
0.02 j
36.2 j
<0.08
1
0.11
U5-08S
Shallow
01/30/2018
0.98
0.71 SI
6000
<0.1
<0.5
6.92
3010
<0.2
0.54
1.6 SI
0.027
<5
<0.5
<5
<0.1
<0.3
30
<100
<0.5
11.9
68.6
<0.1
<50
<0.08
<0.5
1.1
U5-08S
Shallow
04/27/2018
1.2
0.12 j,S1
4080
<0.1
0.35 j
6.38
2720
<0.2
0.59
0.87 SI
0.012 j,SI
4.36 j
<0.5
2.66 j
<0.1
0.16 j,S1
28.5 B
<100
<0.5
13
52.8
<0.1
29.6 j
<0.08
0.17 j,S1
1.4
US-08S
Shallow
08/01/2018
1.1
0.3 j
7380
0.06 j
0.34 j
7.22
3160
<0.2
0.71
0.43 j
0.023
5.58
<0.5
3.6 j
<0.1
0.12 j
17 B,S1
<100
<0.5
13.9
85.1
<0.1
38.8 j
<0.08
<0.5
1
U5-08S
Shallow
10/26/2018
0.58
0.18 j
9820
<0.1
0.26 j
7.3
3040
<0.2
0.69
0.5 j
<0.02
5.9
<0.5
3.9 j
<0.1
<0.3
25.7
<100
<0.5
17.9
96
<0.1
41 j
<0.08
0.17 j
1.1
Prepared by: BER Checked by: SMD
Page 44 of 45

TABLE 3-3
2018 COMPREHENSIVE GROUNDWATER QUALITY DATA
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS LLC, MOORESBORO NC
Analytical Parameters
INORGANIC PARAMETERS (DISSOLVED CONCENTRATION WITH FILTER SIZE)
RADIONUCLIDES
OTHER PARAMETERS
Copper
Iron
Lead
Lithium
Manganese
Mercury
Molybdenum
Nickel
Phosphorus
Selenium
Strontium
Thallium
Vanadium
Zinc
Radium-226
Radium-228
Total
Radium
Uranium-238
Total Uranium
Uranium-238
(Dissolved)
Carbonate
Alkalinity
Fluoride
Phosphorus
Reporting Units
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
mg/L
ug/L
ug/L
ug/L
ug/L
ug/L
pCi/L
pCi/L
pCi/L
ug/mL
ug/mL
ug/mL
mg/L
mg/L
mg/L
15A NCAC 02L Standard
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
5^
NE
0.03^
NE
NE
2
NE
Background Threshold Values (Shallow Flow Zone)
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
2.58
NE
0.0005
NE
5
NE
NE
Background Threshold Values (Deep Flow Zone)
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
1.51
NE
0.0005
NE
5
NE
NE
Background Threshold Values (Bedrock Flow Zone)
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
3.1
NE
0.0005
NE
5
NE
NE
Sample ID
Sample Location
Aquifer Name
Sample
Collection Date
Analytical Results
U5-02S-SLA
Ash Pore Water
10/29/2018
0.22j
51100
<0.1
NA
938
<0.2
551
7.2
<0.05
<0.5
1980
2.2
<0.3
9.7j
0.45
0.779 U
1.23
NA
0.0086
NA
<5
0.41
<0.05
U5-04BRA
Bedrock
01/31/2018
6.2 SS
83.3
<0.1
NA
<5
<0.2
11.6
6.8
<0.05
0.56
148
<0.1
23.5
<10
NA
NA
NA
NA
NA
NA
153
0.98
<0.05
U5-04BRA
Bedrock
05/01/2018
4.7
54.3
0.055 j
NA
<5
<0.2
9.2
3.1
<0.05
0.44 j
135
<0.1
22.7
9.2 j,B
NA
NA
NA
NA
NA
NA
151
0.88
0.027 j
U5-04BRA
Bedrock
08/01/2018
5.6
<50
0.063j
NA
<5
<0.2
38.7
1.5 B,S1
<0.05
0.55
141
<0.1
20.8
6.4j
NA
NA
NA
NA
NA
NA
143
0.93
<0.05
US-04BRA
Bedrock
11/01/2018
5.1
39.8j
<0.1
NA
<5
<0.2
32.5
1.6
0.053
0.49j
130
0.037j
21
4.1j
NA
NA
NA
NA
NA
NA
111
0.83
0.072
U5-041)
Deep
05/01/2018
3.4 Sl
242
0.11
NA
9.7
<0.2
1.2
<0.05
<0.5
82.7
<0.1
NA
IN&NA
NA
NA
NA
<5
70.1
0.05
US-04D
Deep
08/01/2018
3.1
209
<0.1
NA
11
<0.2
26.7
7.6 S1
0.045j
<0.5
114
<0.1
1.4
49.9
NA
NA
NA
NA
NA
NA
<5
0.053j
0.055
U5-041)
Deep
11/01/2018
2.2 S1
45 j
<0.1
NA
9.2
<0.2
23.1
4.4
0.05
<0.5
120
<0.1
1.2
62
NA
NA
NA
NA
NA
NA
<5
0.061 j
0.055
U5-04S
Shallow
01/37/2018
<0.5
<50
<0.1
NA
28.8
<0.2
<0.5
2.1
<0.05
<0.5
10.9
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
U5-04S
Shallow
05/01/2018
2.8 Sl
<50
<0.1
NA
12.8
<0.2
<0.5
0.99 S3
<0.05
0.58
10.2
0.033 j
0.12 j
3 j,B
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
US-04S
Shallow
08/01/2018
0.58 Sl
29.6 j
<0.1
NA
9.3
<0.2
0.063 j
0.59 B,Sl
<0.05
0.65
8.8
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
0.65
U5-04S
Shallow
11/01/2018
2.1 Sl
<50
<0.1
NA
9.1
<0.2
<0.5
0.69
0.035 j
0.47 j
9.8
0.018 j
0.11 j
5.8 j
NA
NA
NA
NA
NA
NA
<5
<0.1
0.043 j
U5-05BR
Bedrock
01/30/2018
1.5
<50
<0.1
NA
<5
<0.2
SOS
12.4
<0.05
2.1
1400
<0.1
18.8
<10
NA
NA
NA
NA
NA
NA
106
0.14
<0.05
U5-05BR
Bedrock
05/01/2018
1.3 Sl
<50
<0.1
NA
5.1
<0.2
91.6
19.1
<0.05
1.7
1270
0.029 j
15.6
<10
NA
NA
NA
NA
NA
NA
45.3
0.14
<0.05
U5-05BR
Bedrock
08/02/2018
7.4
<50
0.088 j,S1
NA
37.4
<0.2
129
11.9
<0.05
1.4
1240
<0.1
5
4.6 j
NA
NA
NA
NA
NA
NA
29.5
0.14
<0.05
U5-05BR
Bedrock
10/31/2018
2.2 Sl
<50
<0.1
NA
82.9
<0.2
101
12.2
<0.05
0.97
1180
<0.1
5.6
3.3 j
NA
NA
NA
NA
NA
NA
5.2
0.1
0.031 j
US-051)
Deep
01/30/2018
0.58
16500
<0.1
NA
3460
<0.2
0.69
31
<0.05
<0.5
181
<0.1
<0.3
62.1
1.17
4.09
5.26
0.002
0.002
NA
<5
0.16
<0.05
U5-05D
Deep
05/01/2018
1 Sl
10700
0.12
NA
2270
<0.2
0.88
26.8
<0.05
<0.5
154
<0.1
0.32
96.6
1.87 S3
2.86
4.73
0.0015
0.0015
0.0031
<5
0.11
<0.05
US-05D
Deep
08/02/2018
0.39 j,S1
17800
0.074 j,S1
NA
3990
<0.2
6.8
63.9
<0.05
<0.5
214
<0.1
0.26 j,B
13.3
1.1
1.38 SI
2.48
0.0034
0.0034
0.0017
<5
0.13
<0.05
U5-05D
Deep
10/31/2018
2.6
26000
0.11
NA
3720
<0.2
6.4
81.9
<0.05
<0.5
195
<0.1
0.33
46.7
0.557 U
1.33
1.89
NA
0.0014
NA
<5
0.089 j
<0.05
US-06D
Deep
01/30/2018
<0.5
14300
<0.1
NA
1450
<0.2
0.57
13.4
<0.05
<0.5
426
0.1
1.3
107
NA
NA
NA
NA
NA
NA
<5
0.1
<0.05
U5-061)
Deep
05/01/2018
0.37 j,S1
9140
0.041j
NA
890
<0.2
1.2
8.9
<0.05
<0.5
298
0.044j
2
906
NA
NA
NA
NA
NA
NA
<5
0.066 j,M1
0.027j
US-06D
Deep
08/01/2018
0.22 j,S1
16900
<0.1
NA
1690
<0.2
1.7
14.4
<0.05
0.31j
476
0.12
0.7
61.2
NA
NA
NA
NA
NA
NA
<5
0.16
<0.05
U5-061)
Deep
10/31/2018
0.37 j,S1
11500
<0.1
NA
1230
<0.2
0.8
9.9
0.048j
<0.5
348
<0.1
0.73
216
NA
NA
NA
NA
NA
NA
<5
0.15
0.063
US-08BR
Bedrock
01/30/2018
0.54
<50
<0.1
NA
<5
<0.2
5.2
1.6
0.066
<0.5
232
<0.1
2.7
<10
NA
NA
NA
NA
NA
NA
78.8
<0.1
0.078
1.15-08BR
Bedrock
04/27/2018
0.74 Sl
<50
<0.1
NA
<5
<0.2
5.4
1.1
<0.05
<0.5
250
<0.1
2.6
14.6
NA
NA
NA
NA
NA
NA
32.4
0.079 j
0.057
U5-08BR
Bedrock
08/07/2018
0.36 j
<50
<0.1
NA
<5
<0.2
10.3
1.6
0.026 j
0.21 j
29.4
<0.1
2.5
<10
NA
NA
NA
NA
NA
NA
<5
1.1
0.0253
1.15-08BR
Bedrock
11/01/2018
0.54 Sl
<50
<0.1
NA
<5
<0.2
4.7
1.1
0.046 j
<0.5
247
<0.1
2.9
4.5 j
NA
NA
NA
NA
NA
NA
78.5
0.077 j
0.06
US-08D
Deep
01/30/2018
<0.5
<50
<0.1
NA
8.3
<0.2
<0.5
0.92
<0.05
<0.5
34.2
<0.1
0.6
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
U5-08D
Deep
04/27/2018
1.5 Sl
<50
<0.1
NA
7.5
<0.2
<0.5
1.4
<0.05
<0.5
35.7
<0.1
0.75 Sl
7.6 j
NA
NA
NA
NA
NA
NA
<5
<0.1
0.032 j
US-08D
Deep
08/01/2018
0.21 j,S1
<50
<0.1
NA
4.6 j
<0.2
<0.5
0.66 Sl
0.035 j
<0.5
36.4
<0.1
0.56 B
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
0.033 j
U5-08D
Deep
10/26/2018
0.31 j
<50
<0.1
NA
5.5
<0.2
<0.5
1
0.043 j
<0.5
35.3
0.015 j
0.59
4.2 j
NA
NA
NA
NA
NA
NA
<5
<0.1
0.039 j
U5-08S
Shallow
01/30/2018
<0.5
5150
<0.1
NA
3080
<0.2
0.54
1.1
<0.05
<0.5
131
<0.1
<0.3
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
U5-08S
Shallow
04/27/2018
<0.5
3660
<0.1
NA
2470
<0.2
0.69
0.88
<0.05
<0.5
118
<0.1
0.095j,S1
<10
NA
NA
NA
NA
NA
NA
<5
<0.1
<0.05
US-08S
Shallow
08/01/2018
<0.5
6670
<0.1
NA
2820
<0.2
0.62
0.85 S1
<0.05
<0.5
154
<0.1
0. 13 j,B
<10
NA
NA
NA
NA
NA
NA
<5
0.065j
<0.05
U5-08S
Shallow
10/26/2018
0.29 j
8320
<0.1
NA
2830
<0.2
0.74
1.3
<0.05
<0.5
150
<0.1
0.12 j
11.1
NA
NA
NA
NA
NA
NA
<5
0.09 j
<0.05
Prepared by: BER Checked by: SMD
Page 45 of 45

TABLE 3-4
DATA QUALIFIERS AND ACRONYMS
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS LLC, MOORESBORO, NC
COLOR NOTES
Bold highlighted concentration indicates exceedance of the 15A NCAC 02L .0202 Standard or the IMAC. (Effective date for 15A NCAC 02L .0202
Standard and IMAC is April 1, 2013
Turbidity of Sample >_ 10 NTUs
Provisional Background Threshold Values reflect the values represented in the NCDEQ letter dated 10/11/2017.
Analytical data review has not been completed for this dataset.
ABBREVIATION NOTES
BGS - below ground surface
BOD - Biologic Oxygen Demand
CB - Compliance Boundary
COD - Chemical Oxygen Demand
Deg C - Degrees Celsius
DMAs - dimethylarsinic acid
DUP - Duplicate
Eh - Redox Potential
ft - Feet
GPM - gallons per minute
IMAC - Interim Maximum Allowable Concentrations. From the 15A NCAC 02L Standard, Appendix 1, April, 1, 2013.
MDC - Minimum Detectable Concentration
McSe - Methylseleninic acid
mg/kg - milligrams per kilogram
mg/L - milligrams per liter
mg-N/L - Milligram nitrogen per liter
MMAs - monomethylarsonic acid
mV - millivolts
NA - Not available or Not Applicable
NE - Not established
NM - Not measured
NTUs - Nephelometric Turbidity Units
pCi/L - picocuries per liter
PSRG - Primary Soil Remediation Goals
RL - Reporting Limit
SeCN - selnocynante
SeMe (IV) - Selenomethionine
SPLP - Synthetic Precipitation Leaching Procedure
S.U. - Standard Units
TCLP - Toxicity Characteristic Leaching Procedure
ug/L - micrograms per liter
ug/mL - microgram per milliliter
umhos/cm - micromhos per centimenter
Well Locations referenced to NAD83 and elevations referenced to NAVD88
LABORATORY FLAGS
< - concentration not detected at or above the adjusted reporting limit.
^ Federal MCL.
* Interim Maximum Allowable Concentrations (IMACs) of the 15A NCAC 02L Standard, Appendix 1, April 1, 2013.
AB - Analyte was detected in the associated instrument blank.
1g - Result confirmed by second analysis performed out of hold.
2g - The concentration in the Blank QC is less than the reporting limit but greater than 1/2 the reporting limit.
B - Target analyte detected in method blank at or above the reporting limit. Target analyte concentration in sample is less than 1OX the
concentration in the method blank. Anal to concentration in samiDle could be due to blank contamination.
Page 1 of 2

TABLE 3-4
DATA QUALIFIERS AND ACRONYMS
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS LLC, MOORESBORO, NC
LABORATORY FLAGS (CONTINUED)
B1 - Target analyte detected in method blank at or above the reporting limit. Target analyte concentration in sample was greater than 10X the
concentration in the method blank. Analyte concentration in sample is not affected by blank contamination.
B2 - Target analyte was detected in blank(s) at a concentration greater than 1/2 the reporting limit but less than the reporting limit. Analyte
concentration in sample is valid and may be used for compliance purposes.
B3 - Target analyte was detected in Continuing Calibration Blank(s) at a concentration greater than 1/2 the reporting limit but less than the
reporting limit. Analyte concentration in sample is valid and may be used for compliance purposes.
B4 - Target analyte was detected in Continuing Calibration Blank(s) at or above the reporting limit.
B5 - Target analyte was present in blank(s) above the method detection limit but less than the reporting limit. Data is valid for compliance
purposes.
B6 - Target analyte was detected in Continuing Calibration Blank(s) at a concentration greater than the reporting limit.
BC - The same analyte was detected in an associated blank at a concentration above 1/2 the reporting limit but below the
laboratory reporting limit.
CC - The continuing calibration for this compound is outside of Pace Analytical acceptance limits. The result may be biased.
CH - The continuing calibration for this compound is outside of Pace Analytical acceptance limits. The results may be biased high.
CL - The continuing calibration for this compound is outside of Pace Analytical acceptance limits. The results may be biased low.
CR - The dissolved metal result was greater than the total metal result for this element. Results were confirmed by reanalysis.
CU - The continuing calibration for this compound is outside of Pace Analytical acceptance limits. Analyte presence below reporting limits in
associated samples. Results unaffected by high bias.
D3 - Sample was diluted due to the presence of high levels of non -target analytes or other matrix interference.
D4 - Sample was diluted due to the presence of high levels of target analytes.
D6 - The precision between the sample and sample duplicate exceeded laboratory control limits.
E - Analyte concentration exceeded the calibration range. The reported result is estimated.
F5 - The recovery of the analyte in the CRDL standard (also known as the reporting limit verification) did not meet the acceptance criteria.
H - Sample analyzed past the recommended holding time.
H1 - Analysis conducted outside the EPA method holding time.
H2 - Extraction of preparation conducted outside EPA method holding time.
H3 - Sample was received or analysis requested beyond the recognized method holding time.
H6 - Analysis initiated outside of the 15 minute EPA required holding time.
HS - Results are from sample aliquot taken from VOA vial with headspace (air bubble greater than 6 mm diameter).
j - Estimated concentration above the adjusted method detection limit and below the adjusted reporting limit.
j- - Estimated concentration, biased low.
j+ - Estimated concentration, biased high.
Ll - Analyte recovery in the laboratory control sample (LCS) was above quality control (QC) limits. Results may be biased high.
L2 - Analyte recovery in the laboratory control sample (LCS) was below QC limits. Results for this analyte in associated samples may be biased
low.
L3 - Analyte recovery in the laboratory control sample (LCS) exceeded quality control (QC) limits. Analyte presence below reporting limits in
associated samples. Results unaffected by high bias.
M - Matrix spike / matrix spike dup failure.
M1 - Matrix spike recovery was high: the associated Laboratory Control Spike (LCS) was acceptable.
M2 - Matrix spike recovery was Low: the associated Laboratory Control Spike (LCS) was acceptable.
M4 - The spike recovery value was unusable since the analyte concentration in the sample was disproportionate to the spike level.
M6 - Matrix spike and Matrix spike duplicate recovery not evaluated against control limits due to sample dilution.
N2 - The lab does not hold accreditation for this parameter.
ND - Not detected
P2 - Re -extraction or re -analysis could not be performed due to insufficient sample amount.
P4 - Sample field preservation does not meet EPA or method recommendations for this analysis.
P8 - Analyte was detected in the method blank. All associated samples had concentrations of at least ten times greater than the blank or were
below the reporting limit.
RO - The data are unusable. The sample results are rejected due to serious deficiencies in meeting QC criteria. The analyte may or may not be
resent in the sample.
R1 - Relative Percent Difference (RPD) value was outside control limits.
S - Associated calibration check did not meet specified criteria.
S1 - Data review findings indicate result may be unreliable. Use with caution.
U - Analyte was analyzed for, but not detected above the MDC.
Prepared by: BER Checked by: SMD
Page 2 of 2

TABLE 3-5
GEOMETRIC MEAN OF COIs - 2018 QUARTERLY DATA
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS, LLC, MOORESBORO NC
Analytical Parameter
CONSTITUENTS OF INTEREST (COIs)
Boron
Strontium
Sulfate
Total
Dissolved
Solids
Arsenic
Chromium
Cobalt
Iron
Manganese
Thallium
Vanadium
Reporting Units
pg/L
pg/L
mg/L
mg/L
pg/L
pg/L
pg/L
pg/L
pg/L
pg/L
pg/L
15A NCAC 02L Standard
700
NE
250
500
10
10
1*
300
50
0.2*
0.3*
Background Threshold Values (Shallow Flow Zone)
50
36.71
1.169
75.47
0.5
3.968
10.65
765.3
166.6
0.117
1.059
Background Threshold Values (Deep Flow Zone)
50
56.14
SO
70.98
0.763
1.791
9.041
559.7
78.31
0.063
1.095
Background Threshold Values (Bedrock Flow Zone)
50
107.1
1 15.1
1 120
1 1
1 3.567
1 1.497
6220
89.4
0.1
0.37
Sample ID
Location With Respect to
Cliffside Source Areas and Boundaries
Well Screen
Location
Data
Reduction Method
Analytical Results
AB-03LA15
Within AAB
Ash Pore Water
Quarter 4 2018
1040
770
56.5
182
404
2.2
<0.1
<50
<5
<0.1
21.8
AB-03MAIS
Within AAB
Ash Pore Water
Quarter 4 2018
1610
1140
99
296
270
1.2
<0.1
<50
<5
<0.1
124
AB-03S
Within AAB
Ash Pore Water
Geomean
2515
2158
229
634
307
1.1
0.8
3158
911
0.6
5.3
AB-03SL
Within AAB
Ash Pore Water
Quarter 4 2018
1130
870
62.1
191
934
1
<0.1
108
62.1
<0.1
62.2
AB-03SLA
Within AAB
Ash Pore Water
Geomean
1031
906
62.8
191
899
1.2
0.11
201
5
<0.1
64.1
AB-04LAIS
Within AAB
Ash Pore Water
Quarter 4 2018
449
1 178
<1
1 51
88.7
1 0.7
6.1
2600
1 591
0.3
1 1.8
AB-04S
Within AAB
Ash Pore Water
Geomean
2498
2032
124
466
98.3
<0.5
<0.1
<50
<S
<0.1
40.1
AB-04SL
Within AAB
Ash Pore Water
Geomean (except Fe)
1528
1651
29.4
168
1660
<0.5
<0.1
132
9
<0.1
47.3
AB-04UA15
Within AAB
Ash Pore Water
Quarter 4 2018
2900
2290
114
400
6"
&54
<0.1
<50
<5
<0.1
55.7
AB-OSS
Within AAB
Ash Pore Water
Geomean
5124
3474
89
427
1721
<0.5
0.15
1040
216
<0.1
1.6
AB-06S
Within AAB
Ash Pore Water
Geomean (except Fe)
8400
2405
119
383
317
<0.5
<0.1
152
46.9
<0.1
9.4
AS-07S
Within the ash storage area, beyond AAB compliance boundary
Ash Pore Water
Geomean (except As, Cr, V)
1398
1 2843
486
1 1037
335
6.3
2.4
17591
13098
1
0.6
AS-08S
Beneath the ash storage area, beyond AAB compliance boundary
Ash Pore Water
Geomean (except As, Cr, Co, TI, V)
152
1353
28.8
255
32.6
<0.5
0.53
2266
2798
0.21
1
US-02S-SL-A
Within US basin
Ash Pore Water
Quarter 4 2018
319
1930
130
469
779
1.2
10.9
50500
1010
2.4
<0.3
AB-01S
Within AAB Downstream Dam
Shallow
Geomean
<50
27.9
3.3
95.2
0.3
<0.5
69.8
1549
6160
0.6
<0.3
AB-02S
Within AAB Upstream Dam
Shallow
Geomean
269
68.7
14.5
91.6
0.5
2
26.6
7761
12505
0_3
0.4
AB-03I
Beneath AAB
Shallow
Geomean
51.7
126
2.7
54.7
3.4
1.3
0.2
166
137
0_4
2,¢
AS-01SB
Beneath ash storage area, within AAB compliance boundary
Shallow
Geomean (except Fe)
1583
109
275
548
6.5
1 1.8
15
88.7
1 913
0_6
<0.3
AS-02S
Downgradient of ash storage area, beyond AAB compliance boundary
Shallow
Geomean (except Fe, TI)
1064
221
345
650
6.4
1.4
17.2
<250
10229
0.54
<0.3
AS-OSS
In the vicinity of the spoil area, beyond AAB compliance boundary
Shallow
Geomean (except Fe)
<50
7
<1
28
0.4
0.9
0.2
70.5
17.4
<0.1
1 <0.3
AS-06S
In the vicinity of the spoil area, beyond AAB compliance boundary
Shallow
Geomean (except V)
<50
12.7
<1
29.3
<0.1
4.6
0.6
290
112
0.101
<0.3
AS-07I
Beneath the ash storage area, beyond AAB compliance boundary
Shallow
Quarter 4 2018
707
182
209
438
2.4
<0.5
15
3730
7030
0_8
<0.3
BG-01S
Background well
Shallow
Geomean
<50
19.7
<1
32
<0.1
0.7
1.1
128
20.5
<0.1
<0.3
CCPMW-01S
Background well
Shallow
Geomean (except As, Cr, Co, TI, V)
<50
<5
<1
29.3
<0.1
I <0.5
1 1.4
<50
1 24
<0.1
<0.3
CCR-07S CAMA
Near AAB waste boundary
Shallow
Geomean (except As)
2780
2573
487
1106
0.1
<0.5
2.7
53.4
5278
0_4
<0.3
CCR-12S LAMA
Near AAB waste boundary
Shallow
Geomean
1223
74.8
48.3
176
0.4
4.7
16.1
256
3522
0_2
<0.3
CCR-IB-01S CAMA
Near U1-4 basin waste boundary
Shallow
Geomean
156
386
55.8
156
0.13
0.6
2.6
705
1956
<0.1
<0.3
CCR-IB-03S LAMA
Near U1-4 basin waste boundary
Shallow
Geomean
259
894
195
464
111.4
0.4
12.7
4716
2065
0.109
0.3
CCR-U5-03S CAMA
Near US basin waste boundary
Shallow
Quarter 4 2018
129
224
52
166
<0.1
<0.5
0.7
70.5
1310
<0.1
0.4
CCR-US-04S LAMA
Near US basin waste boundary
Shallow
Quarter 1 2018
574
1 556
222
379
1 2.5
2
127
1170
2090
0_5
0.4
CLMW-01
Near AAB waste boundary
Shallow
Geomean
1434
695
113
323
0.8
1.8
2.4
188
213
0_5
<0.3
CLMW-02
Downgradient of ash storage area, beyond AAB compliance boundary
Shallow
Geomean (except As, Cr, Co, TI, V)
502
93.1
216
430
0.7
0.96
17.4
90.8
1435
0.47
<0.3
CLMW-03S
Beneath ash storage area, within AAB compliance boundary
Shallow
Geomean (except Fe)
8900
39.6
254
485
4.1
0.9
39.4
<100
2977
0_3
<0.3
CLMW-OSS
Beneath AAB Downstream Dam
Shallow
Geomean
<50
24.9
4.2
64.7
0.2
<0.5
56.3
239
4773
0.4
<0.3
Page 1 of 6

TABLE 3-5
GEOMETRIC MEAN OF COIs - 2018 QUARTERLY DATA
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS, LLC, MOORESBORO NC
Analytical Parameter
CONSTITUENTS OF INTEREST (COIs)
on
Strontium
Sulfate
Total
Dissolved
Solids
Arsenic
Chromium
Cobalt
Iron
Manganese
Thallium
Vanadium
Reporting Units
pg/L
pg/L
mg/L
mg/L
pg/L
pg/L
pg/L
pg/L
pg/L
pg/L
pg/L
15A NCAC 02L Standard
700
NE
250
500
10
10
1*
300
50
0.2*
0.3*
Background Threshold Values (Shallow Flow Zone)
50
36.71
1.169
75.47
0.5
3.968
10.65
765.3
166.6
0.117
1.059
Background Threshold Values (Deep Flow Zone)
50
56.14
10
70.98
0.763
1.791
9.041
559.7
78.31
0.063
1.095
Background Threshold Values (Bedrock Flow Zone)
50
107.1
1 15.1
1 120
1 1
1 3.567
1 1.497
6220
89.4
0.1
0.37
Sample ID
Location With Respect to
Cliffside Source Areas and Boundaries
Well Screen
Location
Data
Reduction Method
Analytical Results
CLMW-06
Near AAB waste boundary
Shallow
Geomean
<50
16.7
<1
33.3
<0.1
<0.5
11.7
187
169
<0.1
<0.3
GWA-025
Downgradient of US basin, beyond US basin waste boundary
Shallow
Geomean
133
134
68.7
188
<0.1
<0.5
0.2
235
228
0.13
<0.3
GWA-04S
Downgradient of US basin, beyond US basin waste boundary
Shallow
Geomean
176
563
213
366
1
<0.5
66.7
19045
2039
<0.3
GWA-05S
Downgradient of US basin, beyond US basin waste boundary
Shallow
Geomean (except Fe)
<50
115
527
784
0.5
2.5
3
102
414
0_4
0.314
GWA-10S
Near U1-4 basin waste boundary
Shallow
Geomean
109
214
108
223
0.4
<0.5
11.3
190
1144
0_2
10.3
GWA-11S
Near U1-4 basin waste boundary
Shallow
Geomean
407
558
104
293
0.5
<0.5
1
428
1941
<0.1
0.9
GWA-12S
Downgradient of U1-4 basin, beyond U1-4 basin waste boundary
Shallow
Geomean
<50
18.3
11.5
84.7
<0.1
<0.5
0.2
121
5.7
<0.1
<0.3
GWA-20S
Near AAB Upstream Dam toe
Shallow
Geomean (except Fe)
257
128
91.7
328
0.3
<0.5
12.1
1 2210
4279
<0.1
<0.3
GWA-21S
Near AAB Downstream Dam toe
Shallow
Geomean (except Fe)
181
194
90
264
5
0.9
0.5
94.4
24.6
PU
3_2
GWA-22S
Downgradient of AAB, near AAB compliance boundary/Duke property line
Shallow
Geomean
321
70.1
1.9
113
0.2
2.3
2.1
602
45.7
<0.1
1
GWA-24S
Sidegradient of AAB
Shallow
Geomean
<50
9.9
1.6
30.7
0.101
1.1
6.1
138
51.4
<0.1
0.4
GWA-25S
Upgradient of AAB
Shallow
Geomean (except As, Cr, Co, TI, V)
<50
30.4
<1
36
<0.1
<0.5
2.3
75.5
26.7
<0.1
<0.3
GWA-26S
Downgradient of AAB, within AAB compliance boundary
Shallow
Geomean
<50
<5
<1
<25
0.11
<0.5
0.7
228
22
<0.1
<0.3
GWA-28S
Downgradient of AAB, within AAB compliance boundary
Shallow
Quarter 4 2018
<50
5
1.5
27
0.12
<0.5
2.2
126
35.4
<0.1
0.32
GWA-30S
Upgradient of US basin
Shallow
Geomean
<50
23.4
<1
37.3
<0.1
1
3.2
187
170
0.13
<0.3
GWA-33S
Upgradient of U1-4 basin
Shallow
Geomean
<50
145
96.8
1 185
0.2
1 0.54
15.2
6613
563
<0.1
0.4
GWA-34S
Downgradient of US basin, beyond US basin waste boundary
Shallow
Geomean (except As, Cr, Co, TI, V)
<50
14.4
1.3
35.7
<0.1
<0.5
0.26
256
37.1
<0.1
<0.3
GWA-35S
Downgradient of US basin, beyond US basin waste boundary
Shallow
Geomean (except As, Cr, Co, TI, V)
112
51
45.7
131
0.74
<0.5
16.1
15292
1 1655
<0.1
1 <0.3
GWA-36S
Downgradient of US basin, beyond US basin waste boundary
Shallow
Geomean
77
234
117
195
1.6
<0.5
64.7
2064
935
Q$
<0.3
GWA-37S
Downgradient of US basin, beyond US basin waste boundary
Shallow
Geomean
82
74.9
71.9
183
0.9
1
94.6
16126
7993
0.12
0.347
GWA-43S
Upgradient of U1-4 basin
Shallow
Geomean
81
166
43.6
89.6
0.13
0.9
1.3
270
20.9
<0.1
<0.3
GWA-44S
Upgradient of U1-4 basin
Shallow
Geomean
<50
223
410
711
0.5
1 8.6
0.3
268
25.1
<0.1
0.5
GWA-54S
Downgradient of ash storage area, near AAB compliance boundary
Shallow
Geomean
69
20.4
<1
50.7
<0.1
1.3
7.4
213
226
0.2
<0.3
GWA-56S
Downgradient of US basin, beyond US basin waste boundary
Shallow
Geomean (except Fe)
<50
66.5
137
323
0.2
1.8
1.4
1 739
1 92.3
<0.1
1 0.4
MW-08S
Near AAB Upstream Dam toe
Shallow
Geomean (except Fe)
214
137
58.6
320
0.3
1.1
3.6
1390
3005
<0.1
0.4
MW-10S
Downgradient of AAB, within AAB compliance boundary
Shallow
Geomean (except Fe)
231
54.7
54.8
169
0.5
0.9
1.8
327
190
0.14
<0.3
MW-11S
Near AAB waste boundary
Shallow
Geomean (except V)
782
44.8
40.9
246
0.2
7.4
1.3
223
2004
<0.1
<0.3
MW-23S
Upgradient of U1-4 basin
Shallow
Geomean
<50
113
102
207
1 0.12
1 2.9
1
215
65.2
0.11
<0.3
MW-30S
Background well
Shallow
Geomean
<50
10.1
<1
28.6
0.12
3.3
0.4
199
8.4
<0.1
<0.3
MW-32S
Background well
Shallow
Quarter 42018
<50
27.6
<1
54
0.11
0.6
1
120
1 38.3
<0.1
I <0.3
MW-34S
Sidegradient of US basin
Shallow
Quarter 4 2018
<50
7.3
<1
<25
<0.1
<0.5
1 2.1
132
37.2
<0.1
<0.3
MW-365
Downgradient of US basin, beyond US basin waste boundary
Shallow
Geomean (except As, Cr, Co, TI, V)
60
38.5
10.4
60
0.14
0.7
0.11
305
22.4
<0.1
0.480
MW-38S
Downgradient of US basin, beyond US basin waste boundary
Shallow
Geomean
116
77.6
145
264
0.105
1
3.8
353
383
<0.1
<0.3
MW-40S
Downgradient of US basin, beyond US basin waste boundary
Shallow
Geomean
<50
158
107
237
<0.1
1.6
0.7
581
30
<0.1
0.7
Page 2 of 6

TABLE 3-5
GEOMETRIC MEAN OF COIs - 2018 QUARTERLY DATA
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS, LLC, MOORESBORO NC
Analytical Parameter
CONSTITUENTS OF INTEREST (COIs)
on
Strontium
Sulfate
Total
Dissolved
Solids
Arsenic
Chromium
Cobalt
Iron
Manganese
Thallium
Vanadium
Reporting Units
pg/L
pg/L
mg/L
mg/L
pg/L
pg/L
pg/L
pg/L
pg/L
pg/L
pg/L
15A NCAC 02L Standard
700
NE
250
500
10
10
1*
300
50
0.2*
0.3*
Background Threshold Values (Shallow Flow Zone)
50
36.71
1.169
75.47
0.5
3.968
10.65
765.3
166.6
0.117
1.059
Background Threshold Values (Deep Flow Zone)
50
56.14
10
70.98
0.763
1.791
9.041
559.7
78.31
0.063
1.095
Background Threshold Values (Bedrock Flow Zone)
50
107.1
1 15.1
1 120
1 1
1 3.567
1 1.497
6220
89.4
0.1
0.37
Sample ID
Location With Respect to
Cliffside Source Areas and Boundaries
Well Screen
Location
Data
Reduction Method
Analytical Results
MW-42S
Sidegradient of U5 basin
Shallow
Geomean (except Fe)
<50
35.3
4.4
51.3
0.3
2.2
0.3
123
9.9
<0.1
<0.3
U5-01S
Beneath US basin
Shallow
Geomean
<50
105
8.7
159
4.7
0.9
9
63362
5467
<0.1
0.4
US-04S
Within US basin Main Dam
Shallow
Geomean
89
13.7
15.7
68.7
0.15
4
1.1
544
23.4
<0.1
0.4
US-08S
Beneath US basin
Shallow
Geomean
<50
153
24.9
212
12.6
<0.5
0.9
6490
2978
<0.1
<0.3
AB-01D
Beneath AAB Downstream Dam
Deep
Geomean
656
232
33.1
279
0.11
1.7
0.3
6679
2400
<0.1
0.4
AB-02D
Beneath AAB Upstream Dam
Deep
Geomean
297
1 340
50.6
251
0.12
3.8
1 1.7
17544
1 2399
<0.1
<0.3
AB-04D
Beneath AAB
Deep
Geomean (except Fe)
<50
8.6
<1
25.2
0.14
<0.5
5.3
<50
173
<0.1
<0.3
AB-05BRU
Beneath AAB
Deep
Geomean (except Fe)
<50
38.0
5.1
43.8
0.4
<0.5
3.7
126
181
0.14
0.333
AB-06D
Beneath AAB
Deep
Geomean
<50
29.4
<1
34
<0.1
<0.5
0.6
<50
38.9
<0.1
<0.3
AS-011)
Beneath ash storage area, within AAB compliance boundary
Deep
Geomean
670
185
54.3
167
0.2
2.3
0.5
209
288
9.3
0.305
AS-02D
Downgradient of ash storage area, beyond AAB compliance boundary
Deep
Geomean
343
476
218
1 456
1
1.3
0.7
1 406
568
<0.1
0.4
AS-03BRU
In the vicinity of the spoil area, beyond AAB compliance boundary
Deep
Geomean
<50
18.9
<1
35.9
<0.1
1 0.7
0.2
1 193
10.3
<0.1
<0.3
AS-04D
In the vicinity of the spoil area, within AAB compliance boundary
Deep
Geomean
<50
28.7
1.4
68.6
0.104
1.7
0.7
85.9
38.4
<0.1
0.4
AS-05BRU
In the vicinity of the spoil area, beyond AAB compliance boundary
Deep
Geomean (except Fe, V)
<50
21.7
<1
45.2
0.2
2.5
0.2
91.8
12.6
<0.1
<0.3
AS-06D
In the vicinity of the spoil area, beyond AAB compliance boundary
Deep
Geomean
<50
29.3
<1
49.5
<0.1
1.4
0.2
97.3
12.4
<0.1
<0.3
AS-07D
Beneath the ash storage area, beyond AAB compliance boundary
Deep
Geomean
830
269
130
303
0.2
1.9
0.3
112
1903
0.13
<0.3
AS-08D
Beneath the ash storage area, beyond AAB compliance boundary
Deep
Geomean (except As, Cr, Co, TI, V)
613
280
169
1 397
1 0.5
1.2
4.2
4263
4764
<0.1
<0.3
BG-01D
Background well
Deep
Geomean
<50
1 30.3
1.4
44.6
0.12
<0.5
1 0.5
<50
1 12.2
<0.1
<0.3
CCR-07D CAMA
Near AAB waste boundary
Deep
Geomean
621
152
34.5
136
<0.1
<0.5
<0.1
<50
96.6
0_2
<0.3
CCR-08D LAMA
Near AAB waste boundary
Deep
Quarter 4 2018
1610
1080
263
620
5.8
0.65
193
<50
6640
1_2
<0.3
CCR-12D CAMA
Near AAB waste boundary
Deep
Geomean
408
75.5
25.9
177
0.2
0.9
10.1
13186
994
<0.1
<0.3
CCR-13D LAMA
Near AAB waste boundary
Deep
Geomean (except Fe)
82
14.1
3.1
34.2
<0.1
<0.5
1.5
<50
56.7
<0.1
<0.3
CCR-15D CAMA
Near AAB waste boundary
Deep
Geomean
108
9.3
<1
36.5
<0.1
<0.5
3.2
<50
95.1
<0.1
<0.3
CCR-IB-01D LAMA
Near U1-4 basin waste boundary
Deep
Geomean
<50
1 61.3
13.9
89.2
0.3
1 0.6
0.3
2532
93.8
0.14
<0.3
CCR-IB-03D CAMA
Near U1-4 basin waste boundary
Deep
Geomean (except As, Cr, V)
70
184
87
334
1
3.3
0.1
50
5.0
0.100
1.6
CCR-US-03D LAMA
Near US basin waste boundary
Deep
Quarter 4 2018
132
218
75.4
214
0.17
0.6
2.1
588
1990
0.2
0.6
CCR-U5-04D CAMA
Near US basin waste boundary
Deep
Quarter 1 2018
946
593
394
692
0.6
<0.5
67.1
1750
4150
Q.Z
<0.3
CLMW-03D
Beneath ash storage area, within AAB compliance boundary
Deep
Geomean
866
294
274
511
0.2
1.1
0.2
426
44.5
<0.1
<0.3
GWA-01BRU
Sidegradient of US basin
Deep
Geomean
<50
44.8
7.7
76.3
0.12
0.501
0.2
1 L
65.9
<0.1
<0.3
GWA-02BRU
Downgradient of US basin, beyond US basin waste boundary
Deep
Geomean
126
158
69.1
267
0.2
<0.5
0.5
445
122
<0.1
<0.3
GWA-03D
Downgradient of US basin, beyond US basin waste boundary
Deep
Geomean (except As, Cr, Co, TI, V)
400
233
186
368
1 0.2
0.5
3.2
238
1432
<0.1
0.58
GWA-04D
Downgradient of US basin, beyond US basin waste boundary
Deep
Geomean
171
1 451
235
427
0.4
<0.5
94
16038
4312
<0.1
<0.3
GWA-05BRU
Downgradient of US basin, beyond US basin waste boundary
Deep
Geomean (except Fe)
<50
210
54.1
436
0.4
<0.5
<0.1
378
163
<0.1
0.4
GWA-10D
Near U1-4 basin waste boundary
Deep
Geomean
<50
139
24.9
124
<0.1
1.2
3.3
<50
176
<0.1
0.342
Page 3 of 6

TABLE 3-5
GEOMETRIC MEAN OF COIs - 2018 QUARTERLY DATA
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS, LLC, MOORESBORO NC
Analytical Parameter
CONSTITUENTS OF INTEREST (COIs)
on
Strontium
Sulfate
Total
Dissolved
Solids
Arsenic
Chromium
Cobalt
Iron
Manganese
Thallium
Vanadium
Reporting Units
pg/L
pg/L
mg/L
mg/L
pg/L
pg/L
pg/L
pg/L
pg/L
pg/L
pg/L
15A NCAC 02L Standard
700
NE
250
500
10
10
1*
300
50
0.2*
0.3*
Background Threshold Values (Shallow Flow Zone)
50
36.71
1.169
75.47
0.5
3.968
10.65
765.3
166.6
0.117
1.059
Background Threshold Values (Deep Flow Zone)
50
56.14
SO
70.98
0.763
1.791
9.041
559.7
78.31
0.063
1.095
Background Threshold Values (Bedrock Flow Zone)
50
107.1
1 15.1
1 120
1 1
1 3.567
1 1.497
6220
89.4
0.1
0.37
Sample ID
Location With Respect to
Cliffside Source Areas and Boundaries
Well Screen
Location
Data
Reduction Method
Analytical Results
GWA-11BRU
Near U1-4 basin waste boundary
Deep
Geomean
385
295
107
322
0.14
<0.5
0.2
379
715
<0.1
<0.3
GWA-12BRU
Downgradient of U1-4 basin, beyond U1-4 basin waste boundary
Deep
Geomean
<50
49.8
8.8
99.8
0.15
<0.5
2.3
464
42.3
<0.1
<0.3
GWA-14D
Sidegradient of U1-4 basin
Deep
Geomean
101
236
195
428
0.12
1.3
0.2
81.5
6.8
<0.1
0.6
GWA-20D
Near AAB Upstream Dam toe
Deep
Geomean (except Fe)
844
495
167
361
0.2
<0.5
92.6
1610
5659
0_7
<0.3
GWA-21BRU
Near AAB Downstream Dam toe
Deep
Geomean (except Fe)
153
143
64.1
172
<0.1
<0.5
1.2
118
96
0.2
<0.3
GWA-22BRU
Downgradient of AAB, near AAB compliance boundary/Duke property line
Deep
Geomean
<50
130
4
139
0.3
0.7
<0.1
172
9.4
<0.1
0.9
GWA-23D
Sidegradient of AAB
Deep
Geomean
<50
16
<1
73.4
<0.1
<0.5
0.8
1 <50
9.3
<0.1
<0.3
GWA-24D
Sidegradient of AAB
Deep
Geomean
<50
23.6
3.2
36.9
<0.1
<0.5
0.2
<50
<5
<0.1
<0.3
GWA-27DA
Downgradient of AAB, within AAB compliance boundary
Deep
Geomean (except As)
974
109
65.6
252
0.3
0.7
0.8
84.4
1304
0.2
<0.3
GWA-28BRU
Downgradient of AAB, within AAB compliance boundary
Deep
Geomean (except Fe)
<50
47.2
10.9
98.2
0.3
<0.5
6
6390
49.8
<0.1
<0.3
GWA-29D
Downgradient of U3-4 basin, beyond U1-4 basin waste boundary
Deep
Geomean
<50
36.1
8
67.1
<0.1
1.1
0.3
145
9.4
<0.1
<0.3
GWA-31D
Near US basin waste boundary
Deep
Geomean
55
498
409
875
0.4
0.9
0.2
95
1 6.7
<0.1
0.4
GWA-32D
Downgradient of CSS infrastructure, separate from CAMA source areas
Deep
Geomean
<50
11
1.7
26.7
<0.1
<0.5
<0.1
104
8.9
<0.1
<0.3
GWA-33D
Upgradient of U3-4 basin
Deep
Geomean
<50
170
109
280
0.2
<0.5
0.5
689
98.7
<0.1
0.4
GWA-35D
Downgradient of US basin, beyond US basin waste boundary
Deep
Geomean (except As, Cr, Co, TI, V)
133
115
64.9
199
<0.1
<0.5
0.9
4652
124
<0.1
<0.3
GWA-36D
Downgradient of US basin, beyond US basin waste boundary
Deep
Geomean
175
321
308
554
0.5
<0.5
37.5
1358
4341
<0.1
0.338
GWA-37D
Downgradient of US basin, beyond US basin waste boundary
Deep
Geomean
62
591
286
543
0.2
10.8
1.4
965
49.7
<0.1
1.4
GWA-43D
Upgradient of U1-4 basin
Deep
Geomean
<50
1 163
77.9
249
0.14
1 0.7
0.2
<50
1 <5
<0.1
0.7
GWA-44D
Upgradient of U1-4 basin
Deep
Geomean
<50
254
289
602
0.3
1.1
0.7
489
209
<0.1
0.4
GWA-47D
Downgradient of AAB, within AAB compliance boundary
Deep
Geomean
373
73.9
<1
85.1
0.15
1.7
1.3
290
156
0.2
0.9
GWA-51D
Downgradient of AAB, within AAB compliance boundary
Deep
Geomean
805
241
236
493
1.3
2.6
73.5
183
8363
2,2
0.333
GWA-54D
Downgradient of ash storage area, near AAB compliance boundary
Deep
Geomean
65
221
37.9
277
0.4
0.9
<0.1
910
194
<0.1
<0.3
GWA-56D
Downgradient of US basin, beyond US basin waste boundary
Deep
Geomean
<50
170
113
313
0.2
1.9
0.6
1649
283
<0.1
0.325
MW-08D
Near AAB Upstream Dam toe
Deep
Geomean
128
1 104
51.4
210
<0.1
I <0.5
4.8
35290
1 5295
<0.1
<0.3
MW-10D
Downgradient of AAB, within AAB compliance boundary
Deep
Geomean (except Fe)
164
49.9
14.5
58.6
0.103
0.6
1.9
229
90.7
0.103
<0.3
MW-11DA
Near AAB waste boundary
Deep
Geomean
75
154
64.5
383
0.5
0.8
56.2
3550
263
<0.1
0.328
MW-20D
Downgradient of AAB, near AAB compliance boundary/Duke property line
Deep
Geomean (except As, Cr, Co, TI, V)
535
150
14.2
202
0.2
6.2
1.5
3941
291
<0.1
<0.3
MW-21D
Sidegradient of AAB
Deep
Geomean
<50
19
1
33.1
0.13
<0.5
0.7
126
9.8
<0.1
<0.3
MW-23D
Upgradient of U1-4 basin
Deep
Geomean
<50
316
335
666
1 0.8
0.9
0.4
1024
630
<0.1
<0.3
MW-24D
Background well
Deep
Geomean
<50
1 26.4
1.1
47.2
0.2
<0.5
0.11
50.3
1 <5
<0.1
<0.3
MW-30D
Background well
Deep
Geomean
<50
61.4
15.7
106
1.5
<0.5
<0.1
<50
7.3
<0.1
10.5
MW-30DA
Background well
Deep
Geomean
<50
65.4
9
116
0.2
<0.5
0.7
548
248
<0.1
<0.3
MW-32D
Background well
Deep
Geomean
<50
39.8
6.8
63.3
0.14
<0.5
1.9
<50
11.5
<0.1
<0.3
MW-34BRU
Sidegradient of US basin
Deep
Geomean (except As, Cr, Co, TI, V)
<50
63.4
11.6
118
<0.1
<0.5
<0.1
762
40.6
<0.1
<0.3
Page 4 of 6

TABLE 3-5
GEOMETRIC MEAN OF COIs - 2018 QUARTERLY DATA
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS, LLC, MOORESBORO NC
Analytical Parameter
CONSTITUENTS OF INTEREST (COIs)
on
Strontium
Sulfate
Total
Dissolved
Solids
Arsenic
Chromium
Cobalt
Iron
Manganese
Thallium
Vanadium
Reporting Units
pg/L
pg/L
mg/L
mg/L
pg/L
pg/L
pg/L
pg/L
pg/L
pg/L
pg/L
15A NCAC 02L Standard
700
NE
250
500
10
10
1*
300
50
0.2*
0.3*
Background Threshold Values (Shallow Flow Zone)
50
36.71
1.169
75.47
0.5
3.968
10.65
765.3
166.6
0.117
1.059
Background Threshold Values (Deep Flow Zone)
50
56.14
SO
70.98
0.763
1.791
9.041
559.7
78.31
0.063
1.095
Background Threshold Values (Bedrock Flow Zone)
50
107.1
1 15.1
1 120
1 1
1 3.567
1 1.497
6220
89.4
0.1
0.37
Sample ID
Location With Respect to
Cliffside Source Areas and Boundaries
Well Screen
Location
Data
Reduction Method
Analytical Results
MW-36BRU
Downgradient of US basin, beyond US basin waste boundary
Deep
Geomean (except As, Cr, Co, TI, V)
<50
71.5
7.4
120
<0.1
<0.5
<0.1
223
68.6
<0.1
<0.3
MW-38D
Downgradient of US basin, beyond US basin waste boundary
Deep
Geomean
235
214
231
421
0.2
1.3
2.6
306
423
<0.1
0.5
MW-40BRU
Downgradient of US basin, beyond US basin waste boundary
Deep
Geomean
<50
200
94.5
290
0.5
<0.5
<0.1
128
175
<0.1
0.4
MW-42DA
Sidegradient of US basin
Deep
Geomean (except Fe)
<50
110
104
296
0.6
0.9
0.3
<50
37.1
<0.1
1.1
U5-01D
Beneath US basin
Deep
Geomean (except Fe)
<50
70
3.4
137
0.5
<0.5
1
87.3
227
<0.1
2
US-02D
Beneath US basin
Deep
Geomean (except V)
124
1394
81.9
327
4025
<0.5
3.1
37197
874
<0.1
0.43
U5-04D
Beneath US basin Main Dam
Deep
Quarter 4 2018
<50
122
61.8
181
1.3
2.0
0.3
216
20.7
<0.1
1.3
U5-OSD
Beneath US basin
Deep
Geomean
346
193
213
450
1.5
3
15.4
12759
3403
<0.1
0.6
U5-06D
Beneath US basin Saddle Dam
Deep
Geomean
154
374
149
314
1.4
1.2
24.1
12256
1263
<0.1
1.3
US-08D
Beneath US basin
Deep
Geomean
<50
39.4
2.1
71.1
0.103
1.2
0.14
<50
8.3
<0.1
0.6
AB-01BROR
Beneath AAB Downstream Dam
Bedrock
Quarter 4 2018
219
283
3.6
346
1 0.2
1 3.9
2_9
1090
1170
<0.1
AB-02BRO
Beneath AAB Upstream Dam
Bedrock
Quarter 4 2018 (except B)
470
521
1 47.6
227
0.9
28.5
31
15200
1 2610
<0.1
1 <0.3
AB-03BR
Beneath AAB
Bedrock
Quarter 2018
<50
2970
127
2860
84
44�2
4_7
104
<5
0_2
49,9
AB-03BRA
Beneath AAB
Bedrock
Quarter 4 2018
<50
623
4•Si
S20
6.4
7-.4
1
3030
386
cO.1
S:S
AB-03BRUA
Beneath AAB
Bedrock
Geomean (except As, Cr, V)
57.4
304
117
563
2-9
3.4
0.2
158
<5
<0.1
33
AB-04BR
Beneath AAB
Bedrock
Geomean
<50
109
3.4
119
<0.1
<0.5
<0.1
12391
160
<0.1
<0.3
AB-05BR
Beneath AAB
Bedrock
Geomean (except Fe)
<50
23.2
6.2
48
0.11
<0.5
Lz
<50
114
<0.1
<0.3
AB-06BR
Beneath AAB
Bedrock
Geomean (except Fe)
<50
101
4.9
89.7
<0.1
<0.5
1 10.1
3430
69.9
<0.1
<0.3
AS-02BR
Downgradient of ash storage area, beyond AAB compliance boundary
Bedrock
Geomean
402
221
96.8
284
2
1.6
0.11
176
352
<0.1
<0.3
AS-OSBR
In the vicinity of the spoil area, beyond AAB compliance boundary
Bedrock
Geomean (except Fe)
<50
47.9
5.6
82.1
0.7
2
<0.1
111
8.8
<0.1
1_6
AS-06BRA
In the vicinity of the spoil area, beyond AAB compliance boundary
Bedrock
Geomean
<50
60.2
3.9
92.3
0.4
1.3
0.14
83.2
22.6
<0.1
0_9
AS-07BRA
Beneath the ash storage area, beyond AAB compliance boundary
Bedrock
Geomean (except As, Cr, V)
<50
883
63.5
1 724
336
3:1
0.12
133
5
<0.1
27
BG-01BRA
Background well
Bedrock
Quarter 4 2018
<50
1241
29.7
429
0.5
Q.5
0.2
719
44.7
<0.1
4 b
CCPMW-01D
Background well
Bedrock
Geomean (except As, Cr, Co, TI, V)
<50
21.9
1.3
44.4
<0.1
<0.5
0.35
54.5
7.5
<0.1
<0.3
GWA-02BR
Downgradient of US basin, beyond US basin waste boundary
Bedrock
Geomean (except As, Cr, V)
86
152
71.9
263
0.3
<0.5
<0.1
<50
14.4
<0.1
<0.3
GWA-13BR
Upgradient of U1-4 basin
Bedrock
Geomean
85
154
85.8
320
0.2
1.2
<0.1
5612
246
<0.1
0_4
GWA-14BR
Sidegradient of U3-4 basin
Bedrock
Geomean
<50
121
47.9
182
1.2
0.8
0.15
172
47
<0.1
1_1
GWA-20BR
Near AAB Upstream Dam toe
Bedrock
Geomean (except As, Cr, Fe, V)
240
685
71.3
258
0.6
<0.5
<0.1
9320
116
<0.1
<0.3
GWA-21BR
Near AAB Downstream Dam toe
Bedrock
Geomean (except Fe)
113
269
<1
189
<0.1
<0.5
0.4
3390
384
<0.1
<0.3
GWA-24BR
Sidegradient of AAB
Bedrock
Geomean
<50
29.3
7.1
1 53.3
<0.1
<0.5
0.13
54.1
<5
<0.1
<0.3
GWA-27BR
Downgradient of AAB, within AAB compliance boundary
Bedrock
Geomean
260
204
4.7
196
0.3
1.7
0.12
815
32.1
<0.1
<0.3
GWA-28BR
Downgradient of AAB, within AAB compliance boundary
Bedrock
Geomean
<50
75
6.6
116
0.11
<0.5
0.4
5642
78
<0.1
<0.3
GWA-29BRA
Downgradient of U3-4 basin, beyond U3-4 basin waste boundary
Bedrock
Geomean
<50
222
11.1
146
1.6
0.7
0.13
120
23.1
<0.1
114
GWA-30BR
Upgradient of US basin
Bedrock
Geomean
<50
51.6
13.7
89.7
0.2
0.6
<0.1
7194
68.8
<0.1
<0.3
Page 5 of 6

TABLE 3-5
GEOMETRIC MEAN OF COIs - 2018 QUARTERLY DATA
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS, LLC, MOORESBORO NC
Analytical Parameter
CONSTITUENTS OF INTEREST (COIs)
on
Strontium
Sulfate
Total
Dissolved
Solids
Arsenic
Chromium
Cobalt
Iron
Manganese
Thallium
Vanadium
Reporting Units
pg/L
pg/L
mg/L
mg/L
pg/L
pg/L
pg/L
pg/L
pg/L
pg/L
pg/L
15A NCAC 02L Standard
700
NE
250
500
10
10
1*
300
50
0.2*
0.3*
Background Threshold Values (Shallow Flow Zone)
50
36.71
1.169
75.47
0.5
3.968
10.65
765.3
166.6
0.117
1.059
Background Threshold Values (Deep Flow Zone)
50
56.14
SO
70.98
0.763
1.791
9.041
559.7
78.31
0.063
1.095
Background Threshold Values (Bedrock Flow Zone)
50
107.1
1 15.1
1 120
1 1
1 3.567
1 1.497
6220
89.4
0.1
0.37
Sample ID
Location With Respect to
Cliffside Source Areas and Boundaries
Well Screen
Location
Data
Reduction Method
Analytical Results
GWA-31BRA
Near US basin waste boundary
Bedrock
Geomean
<50
53.1
129
335
1.9
1.4
<0.1
246
51.7
<0.1
GWA-33BR
Upgradient of U1-4 basin
Bedrock
Geomean
150
198
74
273
<0.1
<0.5
<0.1
1113
312
<0.1
<0.3
GWA-44BR
Upgradient of U1-4 basin
Bedrock
Geomean
57
279
313
634
0.7
1
3
931
lie
<0.1
GWA-48BR
Upgradient of AAB
Bedrock
Geomean
<50
64.4
11.2
88.9
<0.1
0.501
0.1
2309
49.8
<0.1
<0.3
GWA-54BRO
Downgradient of ash storage area, near AAB compliance boundary
Bedrock
Geomean
92
163
109
309
1
3.8
0.2
1063
59.1
<0.1
<0.3
MW-02DA
Downgradient of ash storage area, beyond AAB compliance boundary
Bedrock
Quarter 4 2018
<50
1 136
21.8
1 139
0.9
1 0.6
2_5
2260
1 1100
<0.1
<0.3
MW-11BRO
Near AAB waste boundary
Bedrock
Quarter 4 2018
125
121
8.9
269
<0.1
1.1
0.2
10600
1660
<0.1
0.31
MW-20DR
Downgradient of AAB, near AAB compliance boundary/Duke property line
Bedrock
Geomean
182
335
<1
296
<0.1
<0.5
<0.1
263
574
<0.1
<0.3
MW-21BR
Sidegradient of AAB
Bedrock
Geomean
<50
52.7
7.7
97.0
0.2
<0.5
<0.1
<50
51.7
<0.1
<0.3
MW-22BR
Upgradient of AAB
Bedrock
Geomean
<50
44.1
7.5
68.8
<0.1
<0.5
0.7
322
47.5
<0.1
<0.3
MW-22DR
Upgradient of AAB
Bedrock
Geomean
<50
24.4
5.1
44.9
<0.1
<0.5
1.2
705
53.5
<0.1
I <0.3
MW-23DR
Upgradient of U3-4 basin
Bedrock
Geomean
<50
103
24.8
1 158
0.2
<0.5
<0.1
972
51.6
<0.1
<0.3
MW-24DR
Background well
Bedrock
Geomean
<50
79.8
10.6
113
<0.1
<0.5
<0.1
1000
57.7
<0.1
<0.3
MW-25DR
Opposite (North) side of Broad River from CSS
Bedrock
Geomean (except As, Cr, Co, TI, V)
<50
48.5
2.2
76.8
0.5
0.95
1.1
59.3
8.1
<0.1
0.35
MW-32BR
Background well
Bedrock
Geomean
<50
57.2
16.4
103
0.11
0.6
<0.1
5298
33
<0.1
<0.3
MW-38BR
Downgradient of US basin, beyond US basin waste boundary
Bedrock
Geomean
53
396
261
522
0.8
0.9
0.9
2592
245
<0.1
<0.3
U5-02BR
Beneath US basin
Bedrock
Geomean
127
399
23.4
198
143
0.9
26.3
5732
6233
9„2
0_4
US-04BRA
Beneath US basin Main Dam
Bedrock
Geomean (except As, Cr, V)
<50
143
46.5
284
4-.435.5
0.5
354
6.9
<0.1
22
U5-05BR
Beneath US basin
Bedrock
Geomean
421
1385
576
1489
12.7
2.8
1.7
SE
16.8
<0.1
9.4
U5-08BR
Beneath US basin
Bedrock
Geomean (except As, Cr)
<50
160
1 33.4
1 182
3.9
1 1.4
0.2
78.0
<5
<0.1
2_6
Notes:
Geometric means were calculated for wells with four or more valid sample results. Sample results were excluded from geomeans calculations:
1. if turbidity >10 NTU (for COIs other than boron)
2. if pH >10 S.U. (for arsenic, chromium (total), and vanadium only)
3. for unusable data (RO qualified)
4. if a result was non -detect at a reporting limit (RL) greater than the normal laboratory RL
For wells with datasets containing fewer than four valid results, the most recent valid sample data was used. All data are from 2018.
Bold, underlined, italicized text - Constituent concentration exceeds applicable comparison criteria.
pg/L - Micrograms per liter
B - Boron
Q - Constituent concentration shown is most recent valid sample available due to insufficient dataset for geomean calculation.
NA - Not Analyzed
As - Arsenic
12.40 - Strike -through data is suspect due to elevated pH (>10 S.U) and/or turbidity (>SO NTU).
AAB - active ash basin
Cr - Chromium
* - Interim Maximum Allowable Concentrations (IMACs) of the 15A NCAC 02L Standard, Appendix 1, April 1, 2013.
U1-4 - Units 1-4
Co - Cobalt
< - concentration not detected at or above the adjusted reporting limit.
US - Unit 5
Fe - Iron
NE - Not Established
TI - Thallium
S.U. - Standard Unit
V - Vanadium
NTU - Nephelometric turbidity unit
Prepared by: HEG Checked by: SMD
Page 6 of 6

TABLE 3-6
CONSTITUENTS OF INTEREST EVALUATION
2018 CAMA ANNUAL INTERIM MONITORING REPORT
CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS, LLC, MOORESBORO, NC
AAB EAST
Constituent of Interest
(2018 CSA Update) s
2L Criterion
Groundwater Zone
Statistically Derived
Background Value'
Maximum 2018
Geomean Concentration
Near or Outside of
4
Compliance Boundary
(ug/L or mg/L -see 2L
Criterion)
Exceedance Rati02
Number of Wells Above Criterion
Near or Outside of Compliance
Boundary
Rationale for Exclusion from Mapping in Annual Report
Constituents with 2L Standard Criterion
Shallow: 0.50
5.05
0.50
0
No geomeans exceed comparative criteria
Arsenic
10 (pg/1)
Deep: 0.763
0.33
0.03
0
No geomeans exceed comparative criteria
Bedrock: 1
0.09
0.01
0
No geomeans exceed comparative criteria
Shallow: 50
320.58
0.46
0
Figure 3-23
Boron
700 (pg/1)
Deep: 50
534.55
0.76
0
Figure 3-24
Bedrock: 50
182.33
0.26
0
Figure 3-25
Shallow: 3.968
2.27
0.23
1 0
No geomeans exceed comparative criteria
Chromium (Total)
10 (pg/I)
Deep: 1.791
6.20
0.62
0
No geomeans exceed comparative criteria
Bedrock: 3.567
<0.5
NA
0
No geomeans exceed comparative criteria
Shallow: 765.3
601.55
0.79
0
No geomeans exceed comparative criteria
Iron
300 (pg/1)
Deep: 559.7
3941.44
7.04
1
MW-20D encompassed by boron, strontium, sulfate, and manganese plume; similar to manganese
Bedrock: 6220
3390.00
0.55
0
No geomeans exceed comparative criteria
Shallow: 168.8
45.71
0.27
0
Figure 3-32
Manganese
50 (pg/1)
Deep: 78.31
291.44
3.72
2
Figure 3-33
Bedrock: 89.4
573.53
6.42
2
Figure 3-34
Sulfate
250 (mg/1)
Shallow: 1.169
90.00
0.36
0
Figure 3-29
Deep: 10
64.11
0.26
0
Figure 3-30
Bedrock: 15.1
1.00
0.00
0
Figure 3-31
Shallow: 75.47
264.48
0.53
0
No geomeans exceed comparative criteria
Total Dissolved Solids
500 (mg/1)
Dee : 70.98
202.43
0.40
0
Nogeomeans exceed comparative criteria
Bedrock: 120
295.92
1 0.59
0
No geomeans exceed comparative criteria
Constituents with IMAC Criterion
Shallow: 10.65
2.07
0.19
0
No geomeans exceed comparative criteria
Cobalt
1 (pg/1)
Deep: 9.041
1.50
0.17
0
No geomeans exceed comparative criteria
Bedrock: 1.497
0.45
0.30
0
No geomeans exceed comparative criteria
Thallium
0.2 (pg/1)
Shallow: 0.117
0.28
1.38
1
GWA-21S encom assed by boron strontium sulfate and manganese plume; similar to background
Deep: 0.063
0.15
0.76
0
No geomeans exceed comparative criteria
Bedrock: 0.1
0.20
0.76
0
No geomeans exceed comparative criteria
Shallow: 1.059
3.19
3.01
1
GWA-21S encompassed by boron, strontium, sulfate, and manganese plume; pH issue well/constituent
Vanadium
0.3 (Ng/1)
Dee : 1.095
0.86
0.79
0
No eomeans exceed comparative criteria
Bedrock: 0.37
1 0.30
1 0.18
1 0
INo geomeans exceed comparative criteria
Constituents with Background Criterion
Shallow: 36.71
193.71
5.28
2
Figure 3-26
Strontium
NE
I Deep: 56.14
149.56
2.66
3
Figure 3-27
Bedrock: 107.10
1 335.30
1 3.13
2
1 Figure 3-28
Notes:
' - Background values shown reflect those accepted by NCDEQ in May 14, 2018 letter. These values are currently being updated for re -approval from NCDEQ in 2019.
Z - The exceedance ratio is the ratio of the observed constituent concentration divided by the reference criterion.
3 - Constituent list reflects the COI list identified in the 2018 CSA update (SynTerra, 2018).
4 - The following wells were used to calculate geomean concentrations at or near the compliance boundary in AAB East: GWA-21S/BRU/BR, GWA-22S/BRU, MW-20D/DR
NE - Not Established
Updated Background Values Include Groundwater Data Collected Through 2018 (Draft SynTerra, March 2019)
pg/I - micrograms per liter
mg/I - milligrams per liter
Yellow highlighted value reference criterion
Prepared by: DAA Checked by: SMD
Page 1 of 6

TABLE 3-6
CONSTITUENTS OF INTEREST EVALUATION
2018 CAMA ANNUAL INTERIM MONITORING REPORT
CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS, LLC, MOORESBORO, NC
AAB NORTH
Constituent of Interest
(2018 CSA Update
2L Criterion
Groundwater Zone
Statistically Derived
Background Value
Maximum 2018
Geomean Concentration
Near or Outside of
Compliance Boundary
(ug/L or mg/L - see 2L
Criterion)
Exceedance Ration
Number of Wells Above Criterion
Near or Outside of Compliance
Boundary
Rationale for Exclusion from Mapping in Annual Report
Constituents with 2L Standard Criterion
Arsenic
10 (lag/1)
Shallow: 0.50
335.00
33.50
2
Wells are encompassed by boron strontium sulfate and manganeseplume; low mobility
Deep: 0.763
0.54
0.10
0
No geomeans exceed comparative criteria
Bedrock: 1
19.60
1.96
1
High PH in AS-7BRA rout impact) causing high arsenic H issue constituent
Shallow: 50
1397.80
0.58
3
Figure 3-23
Boron
700 (Ng/1)
Deep: 50
830.20
0.04
2
Figure 3-24
Bedrock: 50
402.20
0.00
0
Figure 3-25
Chromium (Total)
10 (lag/1)
Shallow: 3.968
6.30
0.63
0
No geomeans exceed comparative criteria
Deep: 1.791
1.90
0.20
0
No geomeans exceed comparative criteria
Bedrock: 3.567
3.80
0.38
0
No geomeans exceed comparative criteria
Shallow: 765.3
17590.60
22.99
3
Wells are encompassed by boron, strontium, sulfate, and manganese plume; similar to manganese
Iron
300 (Ng/1)
Deep: 559.7
4262.60
7.60
2
Wells are encompassed by boron strontium sulfate and manganeseplume; similar to manganese
Bedrock: 6220
1063.30
0.17
1
MW-2DA encompassed by boron strontium sulfate and manganeseplume; similar to manganese
Manganese
50 (lag/1)
Shallow: 168.8
13097.80
77.59
6
Figure 3-32
Deep: 78.31
4764.50
60.80
3
Figure 3-33
Bedrock: 89.4
352.20
3.94
2
Figure 3-34
Shallow: 1.169
486.50
1.95
2
Figure 3-29
Sulfate
250 (mg/1)
Deep: 10
169.20
0.68
0
Figure 3-30
Bedrock: 15.1
108.90
0.44
0
Figure 3-31
Total Dissolved Solids
500 (mg/1)
Shallow: 75.47
1037.20
2.07
2
Wells are encompassed by boron strontium sulfate and manganeseplume; similar to sulfate
Deep: 70.98
397.20
0.79
0
No geomeans exceed comparative criteria
Bedrock: 120
1 723.60
1 1.45
1 1
AS-7BRA encompassed by boron strontium sulfate and manganese plume
Constituents with IMAC Criterion
Cobalt
1 (Ng/1)
Shallow: 10.65
17.40
1.63
3
Concentrations similar to background; encompassed by boron strontium sulfate and manganese
Deep: 9.041
4.20
0.46
0
No geomeans exceed comparative criteria
Bedrock: 1.497
0.20
0.00
0
No geomeans exceed comparative criteria
Shallow: 0.117
1.00
5.06
5
Wells are encompassed by boron, strontium, sulfate, and manganese plume; not highly mobile
Thallium
0.2 (Ng/1)
Deep: 0.063
0.13
0.64
0
No geomeans exceed comparative criteria
Bedrock: 0.1
0.10
0.50
0
No geomeans exceed comparative criteria
Vanadium
0.3 (Ng/1)
Shallow: 1.059
1.00
0.94
0
No geomeans exceed comparative criteria
Deep: 1.095
<0.30
0.00
0
lNo geomeans exceed comparative criteria
Bedrock: 0.37
1 27.00
1 72.94
1 2
1 Hi h pH in AS-7BRA rout impact) causing high vanadium; AS-5BR similar to background
Constituents with Background Criterion
Strontium
NE
Shallow: 36.71
2843.02
77.45
5
1 Figure 3-26
I Deep: 56.14
280.30
4.99
3
1 Figure 3-27
Bedrock: 107.10
1 883.30
1 8.25
4
1 Figure 3-28
Notes:
' - Background values shown reflect those accepted by NCDEQ in May 14, 2018 letter. These values are currently being updated for re -approval from NCDEQ in 2019.
z - The exceedance ratio is the ratio of the observed constituent concentration divided by the reference criterion.
3 - Constituent list reflects the COI list identified in the 2018 CSA update (SynTerra, 2018).
4 - The following wells were used to calculate geomean concentrations at or near the compliance boundary in AAB North: AS-2S/BR, AS-3BRU, AS-5S/BRU/BR, AS-6S/D, AS-7S/I/D/BRA, AS-8S/D, CLMW-2, GWA-54S/D/BRO, and MW-2DA.
NE - Not Established
Updated Background Values Include Groundwater Data Collected Through 2018 (Draft SynTerra, March 2019)
pg/I - micrograms per liter
mg/I - milligrams per liter
Yellow highlighted value reference criterion
Prepared by: DAA Checked by: SMD
Page 2 of 6

TABLE 3-6
CONSTITUENTS OF INTEREST EVALUATION
2018 CAMA ANNUAL INTERIM MONITORING REPORT
CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS, LLC, MOORESBORO, NC
AAB SOUTH
Constituent of Interest
(2018 CSA Update)3
2L Criterion
Groundwater Zone
Statistically Derived
Background Value
Maximum 2018
Geomean Concentration
Near or Outside of
Compliance Boundary
(ug/L or mg/L -see 2L
Criterion)
Exceedance Ration
Number of Wells Above Criterion
Near or Outside of Compliance
Boundary
Rationale for Exclusion from Mapping in Annual Report
Constituents with 2L Standard Criterion
Shallow: 0.50
0.00
0.00
0
No geomeans exceed comparative criteria
Arsenic
10 (lag/1)
Deep: 0.763
0.30
0.03
0
No geomeans exceed comparative criteria
Bedrock: 1
0.26
0.03
0
No geomeans exceed comparative criteria
Shallow: 50
0.00
0.00
0
Figure 3-23
Boron
700 (Ng/1)
Deep: 50
974.10
1.39
1
Figure 3-24groundwater in the vicinity of GWA-27DA discharges to Suck Creek prior to compliance boundary
Bedrock: 50
259.60
0.37
0
Figure 3-25
Chromium (Total)
10 (lag/1)
Shallow: 3.968
0.00
0.00
0
No geomeans exceed comparative criteria
Deep: 1.791
1.71
0.20
0
No geomeans exceed comparative criteria
Bedrock: 3.567
1.74
0.17
0
No geomeans exceed comparative criteria
Shallow: 765.3
0.00
0.00
0
No geomeans exceed comparative criteria
Iron
300 (Ng/1)
Deep: 559.7
289.70
0.50
0
No geomeans exceed comparative criteria
Bedrock: 6220
814.00
0.13
0
No geomeans exceed comparative criteria
Manganese
50 (lag/1)
Shallow: 168.8
0.00
0.00
0
Figure 3-32
Deep: 78.31
1,304.20
16.70
2
Figure 3-33; groundwater in the vicinity of GWA-27DA discharges to Suck Creek prior to compliance boundary
Bedrock: 89.4
32.10
0.36
0
Figure 3-34
Shallow: 1.169
0.00
0.00
0
Figure 3-29
Sulfate
250 (mg/1)
Deep: 10
65.60
0.26
0
Figure 3-30
Bedrock: 15.1
4.70
0.02
0
Figure 3-31
Total Dissolved Solids
500 (mg/1)
Shallow: 75.47
0.00
0.00
0
No eomeans exceed comparative criteria
Deep: 70.98
25.24
0.50
0
No geomeans exceed comparative criteria
Bedrock: 120
195.70
0.39
1 0
INo geomeans exceed comparative criteria
Constituents with IMAC Criterion
Cobalt
1 (lag/1)
Shallow: 10.65
0.00
0.00
0
No geomeans exceed comparative criteria
Deep: 9.041
1.30
0.15
0
No geomeans exceed comparative criteria
Bedrock: 1.497
0.10
0.08
0
No geomeans exceed comparative criteria
Shallow: 0.117
0.00
0.00
0
No geomeans exceed comparative criteria
Thallium
0.2 (Ng/1)
Deep: 0.063
0.15
0.77
0
No geomeans exceed comparative criteria
Bedrock: 0.1
0.10
0.50
0
No geomeans exceed comparative criteria
Vanadium
0.3 (Ng/1)
Shallow: 1.059
0.00
0.00
0
No eomeans exceed comparative criteria
Deep: 1.095
0.90
0.80
0
No geomeans exceed comparative criteria
Bedrock: 0.37
1 0.20
0.58
1 0
INo geomeans exceed comparative criteria
Constituents with Background Criterion
Strontium
NE
Shallow: 36.71
1 0.00
1 0.00
1 0
Figure 3-26
I Deep: 56.14
108.90
1.94
2
Figure 3-27; groundwater in the vicinity of GWA-27DA discharges to Suck Creek prior to compliance boundary
Bedrock: 107.10
203.60
1.90
1
Figure 3-28groundwater in the vicinity of GWA-27BR discharges to Suck Creek prior to compliance boundary
Notes:
' - Background values shown reflect those accepted by NCDEQ in May 14, 2018 letter. These values are currently being updated for re -approval from NCDEQ in 2019.
z - The exceedance ratio is the ratio of the observed constituent concentration divided by the reference criterion.
3 - Constituent list reflects the COI list identified in the 2018 CSA update (SynTerra, 2018).
4 - The following wells were used to calculate geomean concentrations at or near the compliance boundary in AAB South: GWA-27DA/BR and GWA-47D
NE - Not Established
pg/I - micrograms per liter
mg/I - milligrams per liter
Yellow highlighted value reference criterion
Prepared by: DAA Checked by: SMD
Page 3 of 6

TABLE 3-6
CONSTITUENTS OF INTEREST EVALUATION
2018 CAMA ANNUAL INTERIM MONITORING REPORT
CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS, LLC, MOORESBORO, NC
U1-4 BASIN
Constituent of Interest
(2018 CSA Update) s
2L Criterion
Groundwater Zone
Statistically Derived
Background Value'
Maximum 2018
Geomean Concentration
Near or Outside of
4
Compliance Boundary
(ug/L or mg/L -see 2L
Criterion)
Exceedance Ratio 2
Number of Wells Above Criterion
Near or Outside of Compliance
Boundary
Rationale for Exclusion from Mapping in Annual Report
Constituents with 2L Standard Criterion
Shallow: 0.50
111.40
11.40
1
CCR-IB-3S encompassed by boron, strontium, sulfate, and manganese plume; low mobility
Arsenic
10 (ug/1)
Deep: 0.763
0.77
0.08
0
No geomeans exceed comparative criteria
Bedrock: 1
1.59
0.16
0
No geomeans exceed comparative criteria
Shallow: 50
407.00
0.58
0
Figure 3-23
Boron
700 (ug/1)
Deep: 50
385.03
0.55
0
Figure 3-24
Bedrock: 50
<50
NA
0
Figure 3-25
Shallow: 3.968
0.60
0.06
1 0
No geomeans exceed comparative criteria
Chromium (Total)
10 (ug/1)
Deep: 1.791
3.30
0.33
0
No geomeans exceed comparative criteria
Bedrock: 3.567
0.68
0.07
1 0
No geomeans exceed comparative criteria
Iron
300 (ug/1)
Shallow: 765.3
4,716.20
6.16
1
CCR-IB-3S encompassed by boron strontium sulfate and manganese plume
Deep: 559.7
2,532.12
4.52
1
CCR-IB-1D encompassed by boron, strontium, sulfate, and manganese plume
Bedrock: 6220
120.30
0.02
0
No geomeans exceed comparative criteria
Shallow: 168.8
2,064.90
12.23
4
1 Figure 3-32
Manganese
50 (ug/1)
Deep: 78.31
714.63
9.13
3
Figure 3-33
Bedrock: 89.4
23.11
0.26
0
Figure 3-34
Shallow: 1.169
194.60
0.78
0
Figure 3-29
Sulfate
250 (mg/1)
Deep: 10
107.49
0.43
0
Figure 3-30
Bedrock: 15.1
11.10
0.04
0
Figure 3-31
Shallow: 75.47
464.30
0.93
0
No geomeans exceed comparative criteria
Total Dissolved Solids
500 (mg/1)
Dee : 70.98
333.80
0.67
0
No geomeans exceed comparative criteria
Bedrock: 120
146.43
0.29
0
No geomeans exceed comparative criteria
Constituents with IMAC Criterion
Shallow: 10.65
12.7
1.19
2
CCR-IB-3S and GWA-10S encompassed by boron, strontium, sulfate, and manganese plume; similar to background
Cobalt
1 (ug/1)
Deep: 9.041
3.32
0.37
0
No geomeans exceed comparative criteria
Bedrock: 1.497
0.13
0.09
0
No geomeans exceed comparative criteria
Thallium
0.2 (ug/1)
Shallow: 0.117
0.21
1.05
1
GWA-10S encompassed by boron strontium sulfate and manganeseplume; similar to background
Deep: 0.063
0.14
0.71
0
No geomeans exceed comparative criteria
Bedrock: 0.1
0.10
0.50
0
No geomeans exceed comparative criteria
Shallow: 1.059
0.90
0.85
0
No geomeans exceed comparative criteria
Vanadium
0.3 (ug/1)
Dee : 1.095
1.60
1.46
1
CCR-IB-3D encompassed b boron strontium sulfate and manganese plume; similar to background
Bedrock: 0.37
1.43
3.87
1
GWA-29BRA encompassed by boron strontium sulfate and manganeseplume; similar to background
Constituents with Background Criterion
Shallow: 36.71
1 893.90
1 24.35
Figure 3-26
Strontium
NE
I Deep: 56.14
294.64
5.25
Fi ure 3-27
Bedrock: 107.10
221.68
2.07
1
Figure 3-28
Prepared by: DAA Checked by: SMD
Notes:
' - Background values shown reflect those accepted by NCDEQ in May 14, 2018 letter. These values are currently being updated for re -approval from NCDEQ in 2019.
Z - The exceedance ratio is the ratio of the observed constituent concentration divided by the reference criterion.
3 - Constituent list reflects the COI list identified in the 2018 CSA update (SynTerra, 2018).
4 - The following wells were used to calculate geomean concentrations at or near the compliance boundary in U1-4 basin: CCR-IB-SS/D, CCR-IB-3S/D, GWA-SOS/D, GWA-11S/BRU, and GWA-29D/BRA.
NE - Not Established
Updated Background Values Include Groundwater Data Collected Through 2018 (Draft SynTerra, March 2019)
ug/I = micrograms per liter
mg/I = milligrams per liter
Yellow highlighted value reference criterion
Page 4 of 6

TABLE 3-6
CONSTITUENTS OF INTEREST EVALUATION
2018 CAMA ANNUAL INTERIM MONITORING REPORT
CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS, LLC, MOORESBORO, NC
U5 BASIN EAST
Constituent of Interest
(2018 CSA Update )3
2L Criterion
Groundwater Zone
Statistically Derived
Background Value
Maximum 2018
Geomean Concentration
Near or Outside of
Compliance Boundary
(ug/L or mg/L -see 2L
Criterion)
Exceedance Ratio
Number of Wells Above Criterion
Near or Outside of Compliance
Boundary
Rationale for Exclusion from Mapping in Annual Report
Constituents with 2L Standard Criterion
Shallow: 0.50
1.56
0.16
0
No geomeans exceed comparative criteria
Arsenic
10 (ug/1)
Deep: 0.763
0.48
0.05
0
No geomeans exceed comparative criteria
Bedrock: 1
1.90
0.19
0
No geomeans exceed comparative criteria
Shallow: 50
175.72
0.25
0
Figure 3-23
Boron
700 (ug/1)
Deep: 50
235.21
0.34
0
Figure 3-24
Bedrock: 50
53.47
0.08
0
Figure 3-25
Chromium (Total)
10 (ug/1)
Shallow: 3.968
2.53
0.25
0
No geomeans exceed comparative criteria
Deep: 1.791
10.76
1.08
1
GWA-37D encompassed by boron, strontium, sulfate, and manganese plume
Bedrock: 3.567
1.41
0.14
0
No geomeans exceed comparative criteria
Shallow: 765.3
19045.35
24.89
3
Wells encompassed by boron, strontium, sulfate, and manganese plume; similar to manganese
Iron
300 (ug/1)
Deep: 559.7
16038.49
28.66
4
Wells encompassed by boron strontium sulfate and manganeseplume; similar to manganese
Bedrock: 6220
2591.56
0.42
1 0
No geomeans exceed comparative criteria
Manganese
50 (ug/1)
Shallow: 168.8
7993.45
47.35
5
Figure 3-32
Deep: 78.31
4341.22
55.44
6
Figure 3-33
Bedrock: 89.4
244.67
2.74
1
Figure 3-34
Shallow: 1.169
526.99
2.11
1
Figure 3-29
Sulfate
250 (mg/1)
Deep: 10
408.56
1.63
3
Figure 3-30
Bedrock: 15.1
261.29
1.05
1
1 Figure 3-31
Total Dissolved Solids
500 (mg/1)
Shallow: 75.47
784.16
1.57
1
GWA- S encompassed by boron strontium sulfate and manganeseplume; similar to sulfate
I Deep: 70.98
874.78
1.75
3
lWells are encompassed by boron, strontium, sulfate, and manganese plume; similar to sulfate
Bedrock: 120
522.04
1.04
1
MW-38BR encompassed by boron strontium sulfate and manganeseplume; similar to sulfate
Constituents with IMAC Criterion
Shallow: 10.65
17.40
1.63
3
Wells encompassed by boron strontium sulfate and manganese plume; similar to background
Cobalt
1 (ug/1)
Deep: 9.041
4.20
0.46
0
No geomeans exceed comparative criteria
Bedrock: 1.497
0.19
0.13
0
No geomeans exceed comparative criteria
Shallow: 0.117
1.69
8.46
3
Wells encompassed by boron, strontium, sulfate, and manganese plume
Thallium
0.2 (ug/1)
Deep: 0.063
0.10
0.50
0
No geomeans exceed comparative criteria
Bedrock: 0.1
<0.10
0.00
0
No geomeans exceed comparative criteria
Vanadium
0.3 (ug/1)
Shallow: 1.059
0.68
0.65
0
No eomeans exceed comparative criteria
Deep: 1.095
1.44
1.31
1
GWA-37D encompassed by boron, strontium, sulfate, and manganese plume; similar to background
Bedrock: 0.37
0.51
1.39
1
GWA-31BRA encompassed by boron strontium sulfate and manganeseplume; similar to background
Constituents with Background Criterion
Strontium
NE
Shallow: 36.71
1 562.64
1 15.33
1 7
Figure 3-26
I Deep: 56.14
1 590.95
1 10.53
8
Figure 3-27
Bedrock: 107.10
1 395.68
1 3.69
1
1 Figure 3-28
Prepared by: DAA Checked by: SMD
Notes:
1 - Background values shown reflect those accepted by NCDEQ in May 14, 2018 letter. These values are currently being updated for re -approval from NCDEQ in 2019.
z - The exceedance ratio is the ratio of the observed constituent concentration divided by the reference criterion.
3 - Constituent list reflects the COI list identified in the 2018 CSA update (SynTerra, 2018).
4 - The following wells were used to calculate geomean concentrations at or near the compliance boundary in U5 basin East: GWA-4S/D, GWA-5S/BRU, GWA-31D/BRA, GWA-36S/D, GWA-37S/D, GWA-56S/D, MW-38S/D/BR, and MW-40S/BRU.
NE - Not Established
Updated Background Values Include Groundwater Data Collected Through 2018 (Draft SynTerra, March 2019)
ug/I = micrograms per liter
mg/I = milligrams per liter
Yellow highlighted value reference criterion
Page 5 of 6

TABLE 3-6
CONSTITUENTS OF INTEREST EVALUATION
2018 CAMA ANNUAL INTERIM MONITORING REPORT
CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS, LLC, MOORESBORO, NC
U5 BASIN WEST
Constituent of Interest
(2018 CSA Update )3
2L Criterion
Groundwater Zone
Statistically Derived
Background Value
Maximum 2018
Geomean Concentration
Near or Outside of
Compliance Boundary
(ug/L or mg/L -see 2L
Criterion)
Exceedance Ratio
Number of Wells Above Criterion
Near or Outside of Compliance
Boundary
Rationale for Exclusion from Mapping in Annual Report
Constituents with 2L Standard Criterion
Shallow: 0.50
32.08
3.21
0
No geomeans exceed comparative criteria
Arsenic
10 (ug/1)
Deep: 0.763
0.57
0.06
0
No geomeans exceed comparative criteria
Bedrock: 1
0.34
0.03
0
No geomeans exceed comparative criteria
Shallow: 50
574.00
0.82
0
Figure 3-23
Boron
700 (ug/1)
Deep: 50
946.00
1.35
1
Figure 3-24
Bedrock: 50
86.00
0.12
0
Figure 3-25
Chromium (Total)
10 (ug/1)
Shallow: 3.968
2.00
0.20
0
No geomeans exceed comparative criteria
Deep: 1.791
0.60
0.06
0
No geomeans exceed comparative criteria
Bedrock: 3.567
<0.50
0.00
0
No geomeans exceed comparative criteria
Shallow: 765.3
1,466.37
1.92
1
CCR-U5-3S encompassed by boron, strontium, sulfate, and manganese plume; similar to background
Iron
300 (ug/1)
Deep: 559.7
4,651.54
8.31
3
Wells are encompassed by boron strontium sulfate and manganese plume
Bedrock: 6220
46.61
0.01
0
No geomeans exceed comparative criteria
Manganese
50 (ug/1)
Shallow: 168.8
2,090.00
12.38
3
Figure 3-32
Deep: 78.31
4,150.00
52.99
5
Figure 3-33
Bedrock: 89.4
14.39
0.16
0
Figure 3-34
Shallow: 1.169
222.00
0.89
0
Figure 3-29
Sulfate
250 (mg/1)
Deep: 10
394.00
1.58
1
Figure 3-30
Bedrock: 15.1
1 71.90
0.29
1 0
1 Figure 3-31
Shallow: 75.47
429.16
0.86
0
1 No ge means exceed comparative criteria
Total Dissolved Solids
500 (mg/1)
I Deep: 70.98
692.00
1.38
1
CCR-U5-4D encompassed by boron, strontium, sulfate, and manganese plume; similar to sulfate
Bedrock: 120
263.00
0.53
0
No geomeans exceed comparative criteria
Constituents with IMAC Criterion
Cobalt
1 (ug/1)
Shallow: 10.65
127.00
11.92
1
CCR-1-15-4S encompassed by boron strontium sulfate and manganese plume
Deep: 9.041
67.10
7.42
1
CCR-U5-4D encompassed by boron, strontium, sulfate, and manganese plume
Bedrock: 1.497
0.08
0.05
0
No geomeans exceed comparative criteria
Shallow: 0.117
0.49
2.45
1
CCR-U5-4S encompassed by boron, strontium, sulfate, and manganese plume
Thallium
0.2 (ug/1)
Deep: 0.063
0.73
3.65
1
CCR-U5-4D encompassed by boron strontium sulfate and manganese plume
Bedrock: 0.1
0.10
0.50
0
No geomeans exceed comparative criteria
Vanadium
0.3 (ug/1)
Shallow: 1.059
0.48
0.45
0
No eomeans exceed comparative criteria
Deep: 1.095
0.56
0.51
0
No geomeans exceed comparative criteria
Bedrock: 0.37
<0.30
0.00
0
No geomeans exceed comparative criteria
Constituents with Background Criterion
Strontium
NE
Shallow: 36.71
556.00
15.15
4
Figure 3-26
I Deep: 56.14
593.00
10.56
Figure 3-27
Bedrock: 107.10
152.10
1.42
1
Figure 3-28
Prepared by: DAA Checked by: SMD
Notes:
' - Background values shown reflect those accepted by NCDEQ in May 14, 2018 letter. These values are currently being updated for re -approval from NCDEQ in 2019.
z - The exceedance ratio is the ratio of the observed constituent concentration divided by the reference criterion.
3 - Constituent list reflects the COI list identified in the 2018 CSA update (SynTerra, 2018).
4 - The following wells were used to calculate geomean concentrations at or near the compliance boundary in U5 basin West: CCR-U5-3S/D, CCR-U5-4S/D, GWA-2S/BRU/BR, GWA-31), GWA-351), MW-36S/BRU.
NE - Not Established
ug/I = micrograms per liter
mg/I = milligrams per liter
Yellow highlighted value reference criterion
Page 6 of 6

TABLE 3-7
GROUNDWATER BACKGROUND THRESHOLD VALUES AND
REGIONAL BACKGROUND CONCENTRATION RANGES
2018 CAMA ANNUAL INTERIM MONITORING REPORT
ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION
DUKE ENERGY CAROLINAS, LLC, MOORESBORO, NC
1
Constituent
Reporting
Unit
15A NCAC 02L
Standard
Approved Cliffside
Background Threshold ValueS2
Constituent Concentration Ranges in
Cliffside Background Wells
Constituent Concentration Ranges in
Big 6 Piedmont Background Wells
Shallow
Flow Zone
Deep
Flow Zone
Bedrock
Flow Zone
Shallow
Flow Zone
Deep
Flow Zone
Bedrock
Flow Zone
Shallow
Flow Zone
Deep
Flow Zone
Bedrock
Flow Zone
pH*
S.U.
6.5-8.5
4.4-6.1
4.8-6.1
5.4-7.4
4.0-6.1
3.8-8.5
4.5-7.6
4.0-7.8
3.8-8.5
4.5-8.5
Arsenic
pg/L
10
1
1.303
1
<0.1 - 0.73
<0.1 - 1.1
<0.1 - 1.2
<0.1 - 1.1
<0.1 - 2.1
<0.1 - 3.13
Boron
pg/L
700
50
50
50
<50
<50
<50
<50
<50
<50
Chromium
lag/L
10
3.968
1.791
3.567
<0.5 - 5.5
<0.5 - 4.4
<0.5 - 8.8
<0.5 -14.1
<0.5 - 19.5
<0.5 - 11.3
Cobalt
pg/L
1*
10.65
5.1
1.497
0.16 - 17.3
<0.1 - 6.1
<0.1 - 2.6
<0.1 - 17.3
<0.1 - 6.1
<0.1 - 21.7
Iron
dig/L
300
684
515
6220
20 - 1000
<10 - 3200
<50 - 8730
<50 - 6820
<50 - 3200
<50- 8730
Manganese
pg/L
50
168.8
78.31
89.4
6.7 - 251
<5 - 408
<5- 134
<5 - 780
<5 - 408
<5 - 1510
Strontium
dig/L
NE
36.73
56.14
107.1
<5- 36.3
<5 - 70.5
<5- 116
<5 - 309
<5 - 782
<5 - 458
Sulfate
mg/L
250
1.169
10
15.1
0.18-5.5
<1-18.5
<1-17.6
<1-12.8
<1-48.1
<1-140
TDS
mg/L
500
75
70.98
120
<25 - 69
<25 - 116
<25 - 158
<25 -164
<25 - 750
<25 - 820
Thallium
pg/L
0.2*
0.1
0.063
0.2
<0.1 - 0.2
<0.1
<0.1
<0.1 - 0.2
<0.2
<0.2
Vanadium
pg/L
0.3*
1
1.095
0.37
<0.3 - 0.72
<0.3 - 12.2
<0.3 - 0.48
<0.3 - 15.4
<0.3 - 24.4
<0.3 - 26.6
Notes:
* - Interim Maximum Allowable Concentrations (IMACs) of the 15A NCAC 02L Standard, Appendix 1, April 1, 2013.
Ng/L - micrograms per liter
1 - Indicates that BTUs were calculated for constituents identified as a COI in the 2018 CSA Update (January 2018)
z - Indicates that BTVs were calculated using data from background groundwater samples collected June 2015 to March 2017
BTV - Background Threshold Value
BTVs represent UTLs calculated from background datasets
COI - Constituent of Interest
CSA - Comprehensive Site Assessment
mg/L - milligrams per liter
NCAC - North Carolina Administrative Code
NE - Not Established
S.U. - Standard Units
TDS - Total Dissolved Solids
UTL - Upper tolerance limit
Prepared by: HES Checked by: SMD/HEG
Page 1 of 1