Coal Pile Area Assessment Work Plan_20190502

DUKE
ENERGY
May 2, 2019
North Carolina Department of Environmental Quality
Water Quality Regional Operations
3800 Barrett Drive
1628 Mail Service Center
Raleigh, North Carolina 27699
Attn: Mr. Eric Rice (submitted electronically)
Re: Roxboro Steam Electric Plant Coal Pile Area
Groundwater Assessment Work Plan
Roxboro Steam Electric Plant
1700 Dunnaway Road
Semora, North Carolina 27343
Dear Mr. Rice:
2500 Fairfax Road
Greensboro, North Carolina 27407
336-215-4576
As indicated in a letter from the North Carolina Department of Environmental Quality (NCDEQ)
dated September 8, 2017 (Zimmerman to Sullivan), it is understood that in addition to
requirements of the Coal Ash Management Act (CAMA), Duke Energy is bound by the
requirements of the North Carolina General Statutes and North Carolina Administrative Code
02L. Therefore, Duke Energy is required to assess soil and groundwater in areas where there is a
potential for groundwater impact. Pursuant to technical direction provided in the September 8,
2017 letter and additional clarification in correspondence from NCDEQ dated April 5, 2019, the
coal pile at the Duke Energy Roxboro Steam Electric Plant (Roxboro) requires completion of a
Comprehensive Site Assessment (CSA) submitted to NCDEQ no later than March 31, 2020.
Duke Energy is submitting the attached Coal Pile Area Assessment Work Plan to assess potential
groundwater and soil impacts from the coal pile area at Roxboro. Upon concurrence with this
work plan, Duke Energy will pursue receipt of necessary permits for the installation of 18
proposed groundwater monitoring wells and perform associated sampling and analysis around
the coal pile area.
If you need additional information regarding this submittal, do not hesitate to call or email, 336-
215-4576 or [e-mail].
Roxboro Steam Electric Plant - Page 1 of 2

Respectfully submitted,
K-`64
Kimberlee Witt, PE
Environmental Services
Attachments: Coal Pile Assessment Work Plan, SynTerra May 2019
ecc: Coal Ash War Room - NCDEQ
Rick Bolich - NCDEQ
Eric Smith - NCDEQ
Steve Lanter - NCDEQ
John Toepfer - Duke Energy
Ed Sullivan — Duke Energy
Craig Eady - SynTerra
Roxboro Steam Electric Plant - Page 2 of 2

410
synTerra
COAL PILE AREA ASSESSMENT WORK PLAN
ROXBORO STEAM ELECTRIC PLANT
1700 DUNNAWAY ROAD
SEMORA, NORTH CAROLINA 27343
May 2, 2019
PREPARED FOR
DUKE ENERGY PROGRESS, LLC
DUKE
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Coal Pile Area Assessment Work Plan May 2, 2019
Duke Energy Progress, LLC - Roxboro Steam Electric Plant SynTerra
TABLE OF CONTENTS
SECTION
PAGE
1.0 INTRODUCTION 1......................................................................................................1-1
1.1 Regulatory Background...........................................................................................1-1
1.2 Site Description.........................................................................................................1-1
2.0 COAL PILE AREA ASSESSMENT OBJECTIVES..................................................2-1
2.1 Soil Assessment......................................................................................................... 2-1
2.2 Groundwater Assessment....................................................................................... 2-2
3.0 COAL PILE AREA ASSESSMENT REPORT..........................................................3-1
LIST OF FIGURES
Figure 1 USGS Topographic Map
Figure 2 Proposed Monitoring Well Clusters and Soil Boring Locations
LIST OF TABLES
Table 1 Soil Sample Analytical Methods
Table 2 Proposed Coal Pile Area Assessment Soil Sample and Monitoring Well
Depths
Table 3 Groundwater Analytical Methods
Page i

Coal Pile Area Assessment Work Plan May 2, 2019
Duke Energy Progress, LLC - Roxboro Steam Electric Plant SynTerra
1.0 INTRODUCTION
Duke Energy Progress, LLC (Duke Energy) owns and operates the coal-fired Roxboro
Steam Electric Plant (Roxboro, Plant, or Site) located at 1700 Dunnaway Road in
Semora, Person County, North Carolina (Figure 1). The Site is situated on
approximately 6,095 acres located between McGhees Mill Road to the east, Semora
Road (Highway 57) to the south and Hyco Reservoir to the west and north. Coal is
transported to Roxboro by rail and stored on Site. Proposed groundwater and soil
assessment activities for the coal storage area (Coal Pile) and adjacent areas are
described herein.
1.1 Regulatory Background
In 2014, The North Carolina General Assembly passed the Coal Ash Management Act
(CAMA) which requires owners of coal combustion residual (CCR) surface
impoundment to conduct detailed assessment of Site groundwater within and around
the CCR surface impoundment. In addition to CAMA requirements, Duke Energy is
also bound by the rules and requirements of the NC General Statutes and NC
Administrative Code 02L to assess soil and groundwater in areas where there is a
potential for groundwater impacts, identified as primary and secondary sources.
Pursuant to technical direction provided in a September 8, 2017 letter, Duke Energy
understands the Coal Pile area at Roxboro is a potential primary source.
Additional clarification was provided in correspondence form the North Carolina
Department of Environmental Quality (NCDEQ) dated April 5, 2019. This requires
submittal of a Comprehensive Site Assessment (CSA) of sources not associated with the
ash basins including the Coal Pile. Coal Pile Area CSA submittal is required by March
31, 2020.
1.2 Site Description
Detailed descriptions of the Site operational history, the Site conceptual model, physical
setting and features, geology/hydrogeology, and results of the findings of CAMA-
related works are documented in the following documents:
• Comprehensive Site Assessment Report — Roxboro Steam Electric Plant (SynTerra,
September 2015).
• Corrective Action Plan, Part 1 — Roxboro Steam Electric Plant (SynTerra, December
2015).
• Corrective Action Plan, Part 2 — Roxboro Steam Electric Plant (SynTerra, February
2016).
Page 1-1

Coal Pile Area Assessment Work Plan May 2, 2019
Duke Energy Progress, LLC - Roxboro Steam Electric Plant SynTerra
• Ash Basins Extension Impoundments and Discharge Canals Assessment Report —
Roxboro Steam Electric Plant (SynTerra, May 2017).
• Comprehensive Site Assessment Report Update— Roxboro Steam Electric Plant
(SynTerra, October 2017).
• 2018 CAMA Annual Interim Monitoring Report — Roxboro Steam Electric Plant
(SynTerra, April 2018).
The Coal Pile occupies approximately 20 acres and is located in the north -central
portion of the Plant (Figure 2). Surface water runoff from the area currently discharges
directly to Hyco Reservoir through National Pollution Discharge Elimination System
(NPDES) Outfall 006; however, the construction of a coal pile retention basin to capture
runoff is planned for 2019 in the adjacent, undeveloped area to the northwest. The Coal
Pile is bounded to the north by the coal rail line followed by Hyco Reservoir and to the
east by the Intake Canal (an internal plant water body receiving flow from Hyco
Reservoir). The Coal Pile is bounded to the south by the powerhouse of the Roxboro
Plant with ancillary structures and the limestone storage area to the west. The land
surface surrounding the coal pile is generally flat with an approximate surface elevation
of 430 feet North American Vertical Datum of 1988 (NAVD 88). Adjacent areas to the
north and east abruptly grade to meet Hyco Reservoir, where full pool elevation is
approximately 410 feet.
Page 1-2

Coal Pile Area Assessment Work Plan May 2, 2019
Duke Energy Progress, LLC - Roxboro Steam Electric Plant SynTerra
2.0 COAL PILE AREA ASSESSMENT OBJECTIVES.
Objectives of the Coal Pile area assessment include the following:
• Characterize inorganic constituents associated with coal pile area and coal pile
retention basin area soils;
• Compare inorganic constituent concentrations in coal pile area and coal pile
retention basin area soils and Site background soils;
• Characterize inorganic constituent concentrations in groundwater underlying the
coal pile area and coal pile retention basin area; and
• Compare inorganic constituent concentrations in coal pile area and coal pile
retention basin area groundwater and Site background groundwater.
2.1 Soil Assessment
Coal Pile area and coal pile retention basin soils will be sampled and analyzed for
inorganic parameters to determine if residual soils are a source of coal related
constituents that may leach into underlying groundwater in excess of NC 02L standards
or Site background threshold values (BTV). CCR materials are not stockpiled in the
Coal Pile area or the proposed retention basin area; however, soils will be assessed prior
to the installation of the coal pile retention basin. A continuous soil boring within
unconsolidated material is planned at each well cluster location (CPA-1 through CPA-
6). Detailed boring logs with lithologic descriptions will be logged and unsaturated soil
samples collected as part of well installation activities. The proposed locations of the
monitoring wells are included in Figure 2. Proposed locations are approximate and may
vary slightly based on field observations, coal pile retention basin design, and locations
of underground utilities, which will be determined prior to initiation of boring
activities.
Soil samples will be analyzed for inorganic parameters consistent with assessment of
areas used for coal and CCR management (Table 1). Soil samples will be collected from
the near ground surface (two to three feet in depth) and at approximately five foot
intervals to the top of the groundwater table or bedrock, whichever is encountered first.
An additional soil sample will be collected below the water table within the new well
screen intervals for wells installed in the shallow flow zone. Synthetic Precipitation
Leaching Procedure (SPLP) samples will be collected at a frequency of two per well
cluster location with one unsaturated sample collected from near ground surface (two
to three feet in depth) and a saturated sample collected two to three feet below the
water table (Table 2).
Page 2-1

Coal Pile Area Assessment Work Plan May 2, 2019
Duke Energy Progress, LLC - Roxboro Steam Electric Plant SynTerra
Soil or rock samples will be collected from depths that coincide with the screen intervals
of newly installed wells for potential analysis of metal oxy-hydroxide phases of iron
and aluminum (HFO and HAO). Following the first round of groundwater sampling,
wells that are geochemically significant to the Site will be selected for analysis as
necessary.
2.2 Groundwater Assessment
Groundwater conditions proximate to the area of investigation will be assessed by
installing groundwater monitoring wells in and around the Coal Pile and coal pile
retention basin and collecting/analyzing representative groundwater samples from the
wells.
A total of 18 coal pile area assessment (CPA) groundwater monitoring wells are
proposed to be installed to characterize Coal Pile area and coal pile retention basin
groundwater conditions. Six shallow ("S"), six transition zone ("D"), and six bedrock
("BR") groundwater monitoring wells (CPA-1S/D/BR, CPA-2S/D/BR, CPA-3S/D/BR,
CPA-4S/D/BR, CPA-5S/D/BR, CPA-6S/D/BR) are planned for installation as well clusters
at the proposed locations shown in Figure 2.
Well installation procedures and well construction materials and lengths will be
consistent with ongoing CAMA assessment activities in accordance with the approved
Proposed Groundwater Assessment Work Plan (Rev. 1) (SynTerra, 2014). Shallow wells are
proposed to be installed so that the top of the screened interval is positioned
approximately five feet below the water table, where practical, to avoid potential issues
such as biofouling and introduction of artificial redox conditions, which are common
among monitoring wells with screened intervals that bracket the water table.
The primary drilling technology for soil sampling, well drilling, and well installation
with either be rotary sonic drilling or a combination of air rotary and hollow stem auger
drilling.
Anticipated well depths are provided in Table 2. Groundwater samples will be
analyzed for field parameters (e.g., pH, specific conductance, temperature, dissolved
oxygen (DO), oxidation-reduction potential (ORP), Eh, and turbidity) and inorganic
constituents consistent with ongoing CAMA assessment activities (Table 3).
Page 2-2

Coal Pile Area Assessment Work Plan May 2, 2019
Duke Energy Progress, LLC - Roxboro Steam Electric Plant SynTerra
3.0 COAL PILE AREA CSA REPORT
A Coal Pile Area CSA Report will be prepared after soil and groundwater sample
analytical data is received, validated, and evaluated. Pursuant to NCDEQ
correspondence dated April 5, 2019, the Coal Pile Area CSA Report is to be submitted
by March 31, 2020. Components of the report will include:
1) Brief Site History
2) Description of Source Assessment Activities
3) Observations Concerning Geology and Hydrogeology in Areas of Additional
Assessment
4) Soil Analytical Results
5) Groundwater Analytical Results
6) Site Conceptual Model
7) Conclusions and Recommendation.
Page 3-1

Coal Pile Area Assessment Work Plan May 1, 2019
Duke Energy Progress, LLC - Roxboro Steam Electric Plant SynTerra
Figures
P:\Duke Energy Progress.1026\107. Roxboro Ash Basin GW Assessment Plan\80.Coal Pile Assessment\Work
Plan \ Draft \ Roxboro Coal Pile Assessment Work Plan - 5-1-19.docx

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NOTES:
DUKE ENERGY PROPERTY LINES ARE REPRESENTED BASED ON
HISTORICAL DOCUMENTED PROPERTY BOUNDARIES AND
CURRENT PERSON COUNTY GIS. DUKE ENERGY IS WORKING
TO VERIFY PROPERTY LINE LOCATION IN THE AREA SOUTHWEST
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OF THE WEST ASH BASIN SOUTHERN EXTENSION IMPOUNDMENT.
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ALL BOUNDARIES ARE APPROXIMATE.
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OBTAINED FROM THE USGS STORE AT
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synTerra
CHARLOTTE
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
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COAL PILE AREA ASSESSMENT WORK PLAN
ROXBORO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
SEMORA, NORTH CAROLINA
DRAWN BY: J. KIRTZ DATE: 4/16/2019 000 0 11000 2,00
PROJECT MANAGER: C. EADY CONTOUR INTERVAL: 10 FT
CHECKED BY: K. LAWING MAP DATE: 2016
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• PROPOSED COAL PILE AREAASSESSMENT MONITORING
WELL CLUSTER AND SOIL BORING LOCATION
NPDES OUTFALL LOCATION
DUKE ENERGY PROGRESS ROXBORO PLANT
SITE BOUNDARY
NOTES:
ALL BOUNDARIES ARE APPROXIMATE.
THE PROPOSED LOCATIONS ARE APPROXIMATE AND COULD BE ADJUSTED BASED ON
ACTUAL FIELD CONDITIONS PRESENTAT THE TIME OF DRILLING.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON MARCH 21, 2018. IMAGE
COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANE
COORDINATE SYSTEM FIPS 3200 (NAD83).
FIGURE 2
PROPOSED MONITORING WELL CLUSTERS
AND SOIL BORING LOCATIONS
COAL PILE AREA ASSESSMENT WORK PLAN
ROXBORO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
SEMORA, NORTH CAROLINA

Coal Pile Area Assessment Work Plan May 1, 2019
Duke Energy Progress, LLC - Roxboro Steam Electric Plant SynTerra
Tables
P:\Duke Energy Progress.1026\107. Roxboro Ash Basin GW Assessment Plan\80.Coal Pile Assessment\Work
Plan \ Draft \ Roxboro Coal Pile Assessment Work Plan - 5-1-19.docx

TABLE 1
SOIL SAMPLE ANALYTICAL METHODS
ROXBORO STEAM ELETRIC PLANT
DUKE ENERGY PROGRESS, LLC, SEMORA, NC
INORGANIC COMPOUNDS
UNITS
METHOD
Aluminum
mg/kg
EPA 6010D
Antimony
mg/kg
EPA 6020B
Arsenic
mg/kg
EPA 6020B
Barium
mg/kg
EPA 6010D
Beryllium
mg/kg
EPA 6010D
Boron
mg/kg
EPA 6010D
Cadmium
mg/kg
EPA 6020B
Calcium
mg/kg
EPA 6010D
Chloride
mg/kg
EPA 9056A
Chromium
mg/kg
EPA 6010C
Cobalt
mg/kg
EPA 6020A
Copper
mg/kg
EPA 6010C
Iron
mg/kg
EPA 6010C
Lead
mg/kg
EPA 6020B
Magnesium
mg/kg
EPA 6010D
Manganese
mg/kg
EPA 6010C
Mercury
mg/kg
EPA 7471B
Molybdenum
mg/kg
EPA 6010D
Nickel
mg/kg
EPA 6010C
Nitrate as Nitrogen
mg/kg
EPA 9056A
pH
S.U.
EPA 9045D
Potassium
mg/kg
EPA 6010D
Selenium
mg/kg
EPA 6020B
Sodium
mg/kg
EPA 6010D
Strontium
mg/kg
EPA 6010C
Sulfate
mg/kg
EPA 9056A
Thallium
mg/kg
EPA 6020B
Total Organic Carbon
mg/kg
EPA 9060
Vanadium
I mg/kg
I EPA 6020B
Zinc
I mg/kg
JEPA 6010C
Prepared by: RBI Checked by: SRW/TCP/VTV
Notes:
1. Soil samples to be analyzed for Total Inorganics using USEPA Methods 6010/6020 and pH using USEPA Method 9045, as noted above.
2. Soil samples collected from near ground surface (2 to 3ft) and from just below water table (field determined) in each boring will also be
analyzed for leaching potential using SPLP Extraction Method 1312 in conjunction with USEPA Methods 6010/6020
3. Analytical methods and reporting limits as presented were developed for CSA field implementation in 2015. Analytical methods and
reporting limits are updated periodically and applied as appropriate.
meq/100g - millequivalents per 100 grams
mg/kg - Milligrams per kilogram
mV - Millivolts
S.U. - Standard Unit
P:\Duke Energy Progress.1026\107. Roxboro Ash Basin GW Assessment Plan\80.Coal Pile Assessment\Work Plan\Draft\Tables\Table 1 Soil Sample Analytical
Methods
Page 1 of 1

TABLE 2
PROPOSED COAL PILE AREA ASSESSMENT SOIL SAMPLE AND MONITORING WELL DEPTHS
ROXBORO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESSS, LLC, SEMORA, NC
Monitoring
Well I
Estimated
Well Depth
(feet bgs)
Soil Sample ID
(Estimated Depth
Interval in feet bus)
Comments
--
CPA-SB1 2-3
Near -surface unsaturated soil sample (water table —15 feet bgs)
--
--
CPA-SBi Varies
Continue sampling at 5' intervals until bottom of unconsolidated
material or saturated conditions are reached (7-8', 12-13', etc.)
--
--
CPA-SB1 (Varies)
Saturated soil sample (may not apply)
CPA -IS
40
CPA-SB1 (35-36)
Soil sample from shallow well screened interval
CPA-113
60
CPA-SB1 (55-56)
Weathered Rock sample from deep well screened interval
CPA-1BR
100
CPA-SB1 (95-96)
Rock sample from bedrock well screened interval
--
CPA-SB2 2-3
Near -surface unsaturated soil sample (water table —15 feet bgs)
--
CPA-SB2 Varies
Continue sampling at 5' intervals until bottom of unconsolidated
material or saturated conditions are reached (7-8', 12-13', etc.)
--
CPA-SB2 (Varies)
Saturated soil sample (may not apply)
CPA-2S
40
CPA-SB2 (35-36)
Soil sample from shallow well screened interval
CPA-2D
60
CPA-SB2 (55-56)
Weathered Rock sample from deep well screened interval
CPA-213R
100
CPA-SB2 (95-96)
Rock sample from bedrock well screened interval
--
CPA-SB3 2-3
Near -surface unsaturated soil sample (water table "15 feet bgs)
--
--
CPA-SB3 Varies
Continue sampling at 5' intervals until bottom of unconsolidated
material or saturated conditions are reached (7-8', 12-13', etc.)
--
--
CPA-SB3 (Varies)
Saturated soil sample (may not apply)
CPA-3S
40
CPA-SB3 (35-36)
Soil sample from shallow well screened interval
CPA-313
60
CPA-SB3 (55-56)
Weathered Rock sample from deep well screened interval
CPA-3BR
100
CPA-SB3 (95-96)
Rock sample from bedrock well screened interval
--
--
CPA-SB4 2-3
Near -surface unsaturated soil sample (water table "15 feet bgs)
--
CPA-SB4 Varies
Continue sampling at 5' intervals until bottom of unconsolidated
material or saturated conditions are reached (7-8', 12-13', etc.)
--
CPA-SB4 (Varies)
Saturated soil sample (may not apply)
CPA-4S
40
CPA-SB4 (35-36)
Soil sample from shallow well screened interval
CPA-413
60
CPA-SB4 (55-56)
Weathered Rock sample from deep well screened interval
CPA-4BR
100
CPA-SB4 (95-96)
Rock sample from bedrock well screened interval
--
CPA-SB5 2-3
Near -surface unsaturated soil sample (water table "15 feet bgs)
--
CPA-SB5 Varies
Continue sampling at 5' intervals until bottom of unconsolidated
material or saturated conditions are reached (7-8', 12-13', etc.)
--
--
CPA-SB5 (Varies)
Saturated soil sample (may not apply)
CPA-5S
40
CPA-SB5 (35-36)
Soil sample from shallow well screened interval
CPA-513
60
CPA-SB5 (55-56)
Weathered Rock sample from deep well screened interval
CPA-5BR
100
CPA-SB5 (95-96)
Rock sample from bedrock well screened interval
--
CPA-SB6 2-3
Near -surface unsaturated soil sample (water table "15 feet bgs)
--
--
CPA-SB6 Varies
Continue sampling at 5' intervals until bottom of unconsolidated
material or saturated conditions are reached (7-8', 12-13', etc.)
--
--
CPA-SB6 (Varies)
Saturated soil sample (may not apply)
CPA-6S
40
CPA-SB6 (35-36)
Soil sample from shallow well screened interval
CPA-613
60
CPA-SB6 55-56
Weathered Rock sample from deep well screened interval
CPA-6BR
100
CPA-SB6 95-96
Rock sample from bedrock well screened interval
Prepared by: KTL Checked by: CDE
Notes:
bgs = below ground surface
— = Approximately
Estimated well and soil sample depths based on data from the CCR-113D and CCR-113BR wells.
Number of soil samples is approximate. A shallower water table will result in fewer samples, and a deeper water table will result in additional samples.
SynTerra recommends each well screen be submerged beneath the water table and have a length of at least 10 feet.
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Locations
Page 1 of 1

TABLE 3
GROUNDWATER ANALYTICAL METHODS
ROXBORO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC, SEMORA, NC
PARAMETER RL JUNITS IMETHOD
FIELD PARAMETERS
pH
NA
SU
Field Water Quality Meter
Specific Conductance
NA
µS/Cm
Field Water Quality Meter
Temperature
NA
dC
Field Water Quality Meter
Dissolved Oxygen
NA
mg/L
Field Water Quality Meter
Oxidation Reduction Potential
NA
mV
Field Water Quality Meter
Eh
NA
mV
Field Water Quality Meter
Turbidity
NA
INTU
I Field Water Quality Meter
INORGANICS
Aluminum
0.005
mg/L
EPA 200.7 or 6010D
Antimony
0.001
mg/L
EPA 200.8 or 6020B
Arsenic
0.001
mg/L
EPA 200.8 or 6020B
Barium
0.005
mg/L
EPA 200.7 or 6010D
Beryllium
0.001
mg/L
EPA 200.8 or 6020B
Boron
0.05
mg/L
EPA 200.7 or 6010D
Cadmium
0.001
mg/L
EPA 200.8 or 6020B
Chromium
0.001
mg/L
EPA 200.8 or 6020B
Cobalt
0.001
mg/L
EPA 200.8 or 6020B
Copper
0.001
mg/L
EPA 200.8 or 6020B
Hexavalent Chromium
0.000025
mg/L
EPA 218.7
Iron
0.01
mg/L
EPA 200.7 or 6010D
Lithium
0.005
mg/L
EPA 200.7 or 6010D
Lead
0.001
mg/L
EPA 200.8 or 6020B
Manganese
0.005
mg/L
EPA 200.7 or 6010D
Mercury
0.00005
mg/L
EPA 245.1 or 7470A
Molybdenum
0.001
mg/L
EPA 200.8 or 6020B
Nickel
0.001
mg/L
EPA 200.8 or 6020B
Selenium
0.001
mg/L
EPA 200.8 or 6020B
Strontium
0.005
mg/L
EPA 200.7 or 6010D
Thallium (low level)
0.0002
mg/L
EPA 200.8 or 6020B
Vanadium (low level)
0.0003
mg/L
EPA 200.8 or 6020B
Zinc
0.005
m /L
EPA 200.7 or 6010D
RADIONUCLIDES
Radium 226
1
pCi/L
EPA 903.1 Modified
Radium 228
1
pCi/L
EPA 904.0/SW846 9320 Modified
Uranium (233, 234, 236, 238)
Varies by isotope
µg/mL
SW846 3010A/6020B
Total Uranium
NA
µg/mL
Calculated
ANIONS/CATIONS/OTHER
Alkalinity (as CaCO3)
5
mg/L
SM 2320B
Bicarbonate
5
mg/L
SM 2320B
Calcium
0.01
mg/L
EPA 200.7
Carbonate
5
mg/L
SM 2320B
Chloride
0.1
mg/L
EPA 300.0 or 9056A
Fluoride
0.1
mg/L
EPA 300.0 or 9056A
Magnesium
0.005
mg/L
EPA 200.7 or 6010D
Potassium
0.1
mg/L
EPA 200.7
Sodium
0.05
mg/L
EPA 200.7
Sulfate
0.1
mg/L
EPA 300.0 or 9056A
Sulfide
0.1
mg/L
SM 4500 S2 D
Total Dissolved Solids
25
mg/L
SM 2540C
Total Phosphorus
0.05
mg/L
EPA 365.1
Total Organic Carbon
0.1
mg/L
SM5310C/EPA9060A
Total Sus ended Solids
5
m /L
SM 2450D
Prepared by: HHS Checked by: RHJ
Notes:
NA indicates not applicable.
°C - Degrees Celsius
mg/L - Milligrams per liter
my - Millivolts
NTU - Nephelometric turbidity unit
pCi/L - picocuries per liter
RL = reporting limit
S.U. - Standard Unit
ug/ml-- micrograms per milliliter
µS/cm = micro -Siemens per centimeter
Dissolved and total metals analysis
P:\Duke Energy Progress. 1026\107. Roxboro Ash Basin GW Assessment Plan\80.Coal Pile Assessment\Work Plan\Draft\Tables\Table 3 Groundwater Analytical Methods
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