NC0022406_BCSS Interim Action Plan 04292016_20160502

F)2
Interim Action Plan
Belews Creek Steam Station
Accelerated Remediation
April 29, 2016
Prepared for:
(� DUKE
�' ENERGY

Duke Energy Carolinas, LLC I Accelerated Remediation Interim Action Plan — Belews Creek Steam Station ��
Background
Table of Contents
1 Background.............................................................................................................................
1.1 Area of Interest..............................................................................................................
1.2 Constituents of Interest.................................................................................................
1.3 On-site Landfills and Structural Fill...............................................................................
2 Interim Action Objectives.........................................................................................................
3 Additional Assessment Activities.............................................................................................
3.1 Status............................................................................................................................
4 Interim Action Tasks................................................................................................................
4.1 Property Acquisition......................................................................................................
4.2 Proposed Interim Action................................................................................................
4.3 Evaluation of Potential Groundwater Impacts from Onsite Landfills and Structural Fill
4.3.1 Findings............................................................................................................
5 Schedule..................................................................................................................................
Tables
Table 1 Groundwater Analytical Results (Accelerated Remediation AOI)
Table 2 AOW Analytical Results (Accelerated Remediation AOI)
Figures
Figure 1 Site Location Map
Figure 2 Additional Assessment Wells and Accelerated Remediation AOI
Figure 3 Interim Action Field Investigation
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.1
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.2
.3
.4
.4
.5
.5
.5
.6
.8
10

Duke Energy Carolinas, LLC I Accelerated Remediation Interim Action Plan — Belews Creek Steam Station ��
Background
1 Background
The North Carolina Department of Environmental Quality (NCDEQ) provided Duke
Energy Carolinas, LLC (Duke Energy) a letter on March 28, 2016 regarding accelerated
remediation at the Belews Creek Steam Station (BCSS) site (Figure 1). The Settlement
Agreement (Agreement) between NCDEQ and Duke Energy dated September 29, 2015
required Duke Energy to implement accelerated remediation at BCSS to address off-site
groundwater impacts. The off-site groundwater impacts are limited to an area northwest
of the ash basin.
Duke Energy provided an "accelerated remediation summary" to NCDEQ on February
17, 2016 for BCSS that outlined the proposed actions for accelerated remediation. The
NCDEQ letter dated March 28, 2016 provided technical direction regarding the path
forward for accelerated remediation and requested responses to specified items be
submitted to NCDEQ by April 30, 2016. This Interim Action Plan (Plan) was developed to
provide those responses.
For BCSS, the accelerated remediation summary provided on February 17, 2016
indicated that accelerated remediation was contingent on the purchase of an adjacent
2.23 -acre parcel located northwest of the BCSS ash basin. The 2.23 -acre parcel is
located within the area referred to as the Area of Interest (AOI) for the purposes of
accelerated remediation at BCSS.
1.1 Area of Interest
Groundwater and area of wetness (AOW) sampling results presented in the 2015
Comprehensive Site Assessment (CSA) indicated that offsite groundwater impacts
attributable to the ash basin were present northwest of the ash basin in the area of the
2.23 -acre parcel not owned by Duke Energy. This parcel is located immediately west of
Middleton Loop Road and northwest of the ash basin.
For purposes of accelerated remediation for offsite groundwater impacts at BCSS, the
AOI is considered to be the area northwest of the ash basin in the immediate vicinity of
the 2.23 -acre parcel not owned by Duke Energy, and is depicted on Figure 2.
Groundwater flow direction in this area is to the northwest toward the Dan River. The
receptor survey included in the CSA indicated: 1) there are no private water supply wells
located within or downgradient from the AOI, and 2) the nearest receptor downgradient
of the northwest corner of the ash basin is the Dan River, located approximately 2,000
feet northwest of this area.
The CSA recommended installation of additional groundwater monitoring wells and
collection of additional assessment data to further delineate the extent of groundwater
impacts west/northwest and downgradient of the ash basin and Middleton Loop Road.
1.2 Constituents of Interest
Groundwater sampling results from the 2015 CSA found exceedances of 2L Standards
or IMACs for beryllium, cobalt, manganese, iron, thallium, and total dissolved solids in

Duke Energy Carolinas, LLC I Accelerated Remediation Interim Action Plan — Belews Creek Steam Station FN
monitoring wells located northwest of the ash basin. Exceedances of 2L Standards or
IMACs were also reported for antimony, manganese, iron, vanadium however these
results were less than the proposed provisional site background concentrations.
The monitoring wells are located on Duke Energy property west of Middleton Loop Road.
The AOI (containing the 2.23 -acre parcel) is located between these wells and the ash
basin. The CSA also sampled AOW locations downgradient of the monitoring wells with
exceedances and the AOI. Samples collected at the AOWs showed exceedances of 2L
Standards or IMACs for cobalt, chromium, manganese, and vanadium, and elevated
concentrations of boron, chloride, and total dissolved solids.
1.3 On-site Landfills and Structural Fill
The March 28, 2016 letter from DEQ also requested an evaluation of the potential
contribution of the on-site landfills and structural fill to groundwater at and off-site of the
facility. This evaluation is provided in Section 4.3.
As described in the CSA, there are three landfills and one structural fill at the BCSS site.
The Craig Road Ash Landfill and FGD Residue Landfill are located south of the BCSS
and are not hydrogeologically connected with the ash basin. The Pine Hall Road Ash
Landfill is located adjacent to and hydrogeologically upgradient of the ash basin. The ash
structural fill is located south of Pine Hall Road and the ash basin, and based on 2015
CSA data it appears groundwater does not flow from the ash basin toward the structural
fill. The locations of these facilities are shown on Figure 1.

Duke Energy Carolinas, LLC I Accelerated Remediation Interim Action Plan — Belews Creek Steam Station ��
Interim Action Objectives
2 Interim Action Objectives
The following items were requested to be submitted to NCDEQ by April 30, 2016:
1. A report that summarizes the results of post -CSA additional assessment
characterization effort;
2. A status report that provides details concerning the pending property purchase in
order to assess the viability of remedial action strategy; and
3. An evaluation of potential off-site migration of impacted groundwater, including
any analyses of a hydraulic capture system, and an evaluation of the potential
contribution of the on-site landfills and structural fill to impacted groundwater at
and offsite of the facility.
A status summary of the post -CSA additional assessment effort is provided in Section 3.
In addition, NCDEQ indicated that if the adjacent offsite property cannot be acquired by
April 30, 2016, then a revised Plan should be submitted with a reasonable timeframe. At
the time of this Plan submittal, Duke Energy is contemplating purchase of the 2.23 -acre
parcel as described in Section 4.
As requested by NCDEQ, Duke Energy plans to implement additional field investigation
to evaluate viable accelerated remediation alternatives to address offsite groundwater
impacts associated with the AOI. Following completion of the additional field
investigation, a feasible and appropriate remedial alternative will be chosen if the offsite
property is not acquired by Duke Energy. The additional field investigation and remedial
alternatives currently under consideration are described in Section 4.

Duke Energy Carolinas, LLC I Accelerated Remediation Interim Action Plan — Belews Creek Steam Station ��
Additional Assessment Activities
3 Additional Assessment Activities
Based on 2015 site investigation results, areas at the site were identified where the
installation of additional monitoring wells may refine site information. Duke Energy is
currently installing an additional 23 groundwater monitoring wells to provide this
additional information.
3.1 Status
As of April 21, 2016, 14 of the 23 proposed additional groundwater monitoring wells have
been installed at the site. Duke Energy plans to complete installation of the remaining
proposed additional monitoring wells before May 31, 2016.
Of the 14 wells installed, Duke Energy collected groundwater samples from 5 wells
located in the accelerated remediation AOI. The additional wells, which were sampled
on March 30 and 31, 2016, include GWA-18D, GWA-19S, GWA-20D, GWA-21 S, and
GWA-21 D. The analytical results are provided in Table 1. Along with results from the
additional wells, Table 1 also includes analytical results for samples collected from other
existing CSA monitoring wells located in the vicinity of the accelerated remediation AOI
during the CSA and March/April 2016 sampling events.
The recent sample results indicate concentrations of boron, chloride, and TDS exceed
their 2L Standards in the deep flow layer (in GWA-20D) on Duke Energy property
between the ash basin and the 2.23 -acre parcel. Boron also exceeded its 2L Standard in
the shallow flow layer (in GWA-19S) downgradient and west of the 2.23 -acre parcel. Due
to these new findings, Duke Energy is planning to install three additional monitoring wells
(shallow, deep, and bedrock) immediately west of the 2.23 -acre parcel to better assess
groundwater quality and flow conditions surrounding the offsite property. The proposed
well nest (GWA-27S/D/BR) is depicted on Figure 2.
In addition to groundwater monitoring wells, the AOWs located downgradient and
northwest of the ash basin (S-2 through S-5) were sampled in March/April 2016 and the
analytical results are provided in Table 2. The results from March/April 2016 are similar
to the results included in the 2015 CSA.

Duke Energy Carolinas, LLC I Accelerated Remediation Interim Action Plan — Belews Creek Steam Station ��
Interim Action Tasks
4 Interim Action Tasks
Duke Energy has been actively pursuing purchase of the adjacent 2.23 -acre parcel not
owned by Duke Energy located northwest of the ash basin. The timeframe in which the
property acquisition will occur is uncertain at this time. Due to this uncertainty, Duke
Energy is planning to conduct an additional field investigation as an interim action to
evaluate groundwater remedial alternatives. A summary of the property acquisition
status and the proposed interim action are provided in the sections below. An estimated
schedule for the interim action is provided in Section 5.
4.1 Property Acquisition
Duke Energy is contemplating purchase of the 2.23 -acre parcel northwest of the ash
basin with the intent to control property use. If property purchase is not made, Duke
Energy is committed to accelerating the proposed interim actions described below such
that the offsite groundwater impacts will be addressed in the timeframe provided in
Section 5.
4.2 Proposed Interim Action
The purpose of additional field investigation is to determine the most suitable
groundwater remediation approach for the AOI. The selected measure will be
implemented on Duke Energy property upgradient of the 2.23 -acre parcel, between the
parcel and the BCSS ash basin. Options to be evaluated include:
Installation of a groundwater extraction system between the parcel and ash
basin.
2. Installation of a subsurface barrier wall (e.g., slurry trench barrier wall, grout
curtain, sheet pile barrier wall, or deep soil mixing barrier wall) between the
parcel and ash basin.
3. A combination of options 1 and 2. The optimal configuration of a barrier wall
and/or location and number of extraction wells will be evaluated through the
incorporation of newly acquired data into the groundwater flow model that was
constructed for the BCSS Corrective Action Plan (CAP2 model).
Proposed field efforts for the investigation consist of advancement of five soil borings,
installation of one 6 -inch diameter pumping well, installation of two temporary
observation wells, and performing an aquifer pump test. The locations of proposed soil
borings, extraction well, and observation wells are depicted on Figure 3.
During initial stages of the project, necessary NCDEQ permit applications will be
submitted and obtained. After investigation field efforts, project data will be evaluated to
provide a recommended approach for addressing groundwater impacts in the
accelerated remediation AOI. Duke Energy will provide an evaluation and recommended
remedial approach report to NCDEQ for review prior to implementing full-scale remedial
design.

Duke Energy Carolinas, LLC I Accelerated Remediation Interim Action Plan — Belews Creek Steam Station ��
Interim Action Tasks
4.3 Evaluation of Potential Groundwater Impacts from
Onsite Landfills and Structural Fill
Provided below are descriptions of each landfill unit and the structural fill as well as
summaries of previously conducted assessments and findings.
Craig Road Ash Landfill (NCDEQ DWM Permit No. 8504)
This landfill is in operation and accepts coal combustion products generated at BCSS.
The landfill was constructed with an engineered liner system and is located on the south
side of Belews Lake and therefore not hydrogeologically connected with the ash basin.
Semi-annual groundwater monitoring is performed in accordance with the requirements
of the permit and the results are submitted to NCDEQ Division of Waste Management.
In 2012, HDR prepared and submitted an assessment report to NCDEQ for exceedances
of 2L and 2B Standards at Phase 1 of the landfill (Groundwater Assessment, Belews
Creek Steam Station, Craig Road Ash Landfill, December 21, 2012). The assessment
report concluded that the exceedances evaluated were naturally occurring and not
related to impacts from the landfill.
FGD Residue Landfill (NCDEQ DWM Permit No. 8505)
This landfill is in operation and accepts coal combustion products generated at
BCSS. The landfill was constructed with an engineered liner system and is located on
the south side of Belews Lake and therefore not hydrogeologically connected with the
ash basin. Semi-annual groundwater monitoring is performed in accordance with the
requirements of the permit and the results are submitted to NCDEQ Division of Waste
Management.
HDR previously prepared and submitted a groundwater assessment report to NCDEQ
DWM for exceedances of 2L Standards at the landfill (Groundwater Assessment Belews
Creek Steam Station FGD Residue Landfill, Permit No. 8505. October 5, 2012). The
assessment concluded, with the exception of exceedances for iron, manganese, sulfate
and total dissolved solids (TDS) at two monitoring wells, the groundwater exceedances
were due to naturally occurring conditions. The assessment recommended the
installation of an additional monitoring well. The additional well was installed and a
supplemental groundwater assessment report (dated June 4, 2015) was submitted to
NCDEQ DWM. The supplemental assessment found that the exceedances for iron and
manganese were naturally occurring but that the exceedances for sulfate, TDS, and the
newly occurring exceedances for selenium could be attributed to either deposition of
gypsum adjacent to the landfill or leachate leaking from the landfill. Due to these
variables, and in some cases decreasing concentrations of these constituents, the
supplemental assessment recommended that if the exceedances continued for the
subsequent three sampling events, an additional assessment should be conducted. As
exceedances of the 2L Standards have persisted in some of the subject monitoring wells,
Duke Energy has communicated to NCDEQ DWM that an additional investigation and
assessment will be initiated at the landfill. HDR is preparing the assessment plan at this
time and plans to submit the assessment plan to NCDEQ DWM by May 31, 2016.

Duke Energy Carolinas, LLC I Accelerated Remediation Interim Action Plan — Belews Creek Steam Station ��
Interim Action Tasks
Pine Hall Road Ash Landfill (NCDEQ DWM Permit No. 8505
The Pine Hall Road Ash Landfill (NCDNR Permit No. 8503) is located adjacent to the ash
basin. The landfill was originally permitted in 1983. The original landfill was unlined and
was permitted with a soil cap 1 -foot thick on the side slopes and 2 feet thick on flatter
areas. A subsequent expansion (Phase I Expansion) was permitted in 2003. This phase
was also unlined but was permitted with a synthetic cap system to be installed at closure.
After groundwater exceedances were observed in wells installed near the landfill, the
placement of additional ash in the Phase I Expansion was halted. The closure design
was changed to utilize an engineered cover system for a portion of the landfill. The
engineered cover system consists of a 40 -mil linear low density polyethylene
geomembrane, a geonet composite, 18 inches of compacted soil, and 6 inches of
vegetative soil cover. The engineered cover system was installed over a 37.9 acre area.
An adjacent 14.5 acre area, located to the northeast, had additional soil cover applied
and was graded to improve surface drainage. The construction of the engineered cover
system and additional soil cover on the 14.5 acre area was completed in December
2008.
HDR previously prepared and submitted an assessment to NCDEQ DWM for
exceedances of 2L Standards at the landfill (Groundwater Assessment Belews Creek
Steam Station Pine Hall Road Ash Landfill, Permit No. 8503, dated October 1, 2012).
The report assessed 2L Standard exceedances at wells MW -3 and MW -6 and found
those exceedances to be attributed to naturally occurring conditions.
The assessment report reviewed the location of wells and surface water sample
locations with exceedances of 2L Standards (MW -4, MW -7, MW2-7, MW2-9, SW -1A,
and SW -2) and found that the hydrologic boundaries and the groundwater flow at the site
was such that groundwater at these locations was discharging to the ash basin. The
report also concluded that with the reduced infiltration, due to the engineered cover
system installed in 2008, the concentrations of constituents in groundwater attributable to
fly ash in these wells will likely continue to decrease over time.
The groundwater model included as part of the BCSS CAP 2, which was submitted to
NCDEQ on March 8, 2016, applied a recharge rate of 0 inches per year to this landfill
area outside of the engineered cover system. The 14.5 acre area of the landfill with the
additional soil cover should have received approximately 9 inches of infiltration per year
as recharge in the model. It is likely that the additional recharge would have a negligible
effect on the model results; however, the correct recharge value will be applied during
upcoming groundwater model revisions.
Structural Fill
An ash structural fill comprised of compacted fly ash was constructed southeast of the
ash basin under the structural fill rules found in 15A NCAC 13B .1700. The ash structural
fill is located south of the Pine Hall Road topographic divide and therefore groundwater
flow beneath the fill should be predominantly away from the ash basin.
After completion of the fill, an engineered cover system consisting of a geomembrane
cover system capped with soil and vegetation was installed over the ash structural fill.
The structural fill is currently used as an equipment/material staging area and for
overflow parking.

Duke Energy Carolinas, LLC I Accelerated Remediation Interim Action Plan — Belews Creek Steam Station FN
Action Tasks
AOW sample location S-9 (from the CSA) exhibited 2L Standard or IMAC exceedances
for boron, cobalt, sulfate, and TDS. As stated in the CSA, due to the location of S-9, it
does not appear that the exceedances at S-9 are related to the ash basin. Additional
inspections were performed in this area to determine if visible sources of ash, possibly
related to the structural fill, could be observed, however none were detected.
Analytical results for S-9 are provided in Table 2. Round 2 data was collected on
October 5, 2015 and Round 5 data was collected on March 31, 2016. A review of the
Round 2 and Round 5 analytical data for S-9 shows the following:
• Boron — the concentration in Round 2 was less than the method detection limit of
50 pg/L. The boron concentration in Round 5 was greater than the 2L Standard
at 1,000 pg/L.
• Cobalt — the concentration in Round 2 was 2.7 pg/L, greater than the IMAC of 1
pg/L; however, in Round 5, cobalt was reported at a concentration less than the
IMAC at 0.23 pg/L.
• Sulfate — the concentration in Round 2 decreased to 3,600 pg/L, less than the 2L
Standard of 250,000 pg/L. The sulfate concentration in Round 5 was also less
than the 2L Standard at 197,000 pg/L.
• TDS — the concentration in Round 2 decreased to 54,000 pg/L, less than the 2L
Standard of 500,000 pg/L. The TDS concentration in Round 5 was also less than
the 2L Standard at 257,000 pg/L.
Exceedances were also reported at S-9 in Round 5 for manganese (56 pg/L) and
vanadium (0.41 pg/L). The site proposed provisional background concentrations
(PPBCs) as provided in CAP 1 Table 2-2 for these constituents are 96.2 pg/L and 7.4
pg/L, respectively.
Groundwater monitoring wells GWA-23S/D were installed north of S-9 in April 2016 and
will be used to evaluate if exceedances observed at S-9 are likely due to the ash basin or
the structural fill. These wells are anticipated to be sampled in early May 2016.
4.3.1 Findings
The following findings are based on the descriptions above for each landfill unit and the
structural fill:
• The Craig Road Ash Landfill and FGD Residue Landfill are lined landfills, with
groundwater monitoring programs conducted under the requirements of NCDEQ
DWM, and are located such that they are not hydrogeologically connected with
the ash basin. Therefore, additional evaluation of the potential contribution of
these landfills to impacted groundwater is not needed.
• Previous assessment at the Pine Hall Road ash landfill indicated groundwater
flows from the area beneath the landfill toward the ash basin. Duke Energy is
planning to install additional assessment monitoring wells GWA-25BR and GWA-
26S/D/BR (shown on Figure 2) to further evaluate groundwater quality
immediately southwest of the landfill, on Duke Energy property between the
landfill and potential offsite receptors. Additional evaluation of the potential
contribution of this landfill to impacted groundwater is not needed.

Duke Energy Carolinas, LLC I Accelerated Remediation Interim Action Plan — Belews Creek Steam Station ��
Interim Action Tasks
• Additional evaluation of the potential contribution of the structural fill to impacted
groundwater should be deferred until evaluation of the groundwater analytical
results from monitoring wells GWA-23S/D is completed.

9
Duke Energy Carolinas, LLC I Accelerated Remediation Interim Action Plan — Belews Creek Steam Station
Schedule
Schedule
Task Description
Complete Additional Assessment Field Activities
Complete Evaluation of Additional Assessment Results
Initiate Interim Action Field Investigation
Perform Aquifer Pump Test
Provide NCDEQ with Accelerated Groundwater
Remediation Evaluation Report
Taraet Date
May 31, 2016
June 30, 2016
May 23, 2016
June 13, 2016
July 15, 2016
FN

Fez
Table 1: Groundwater Analvtical Results (Accelerated Remediation AOI)
c: �pwworking � tpa �d0915075 � Copy of DRAFT Belews_R5_2016Q1_PlusPriorityWells_Groundwater 20160413_REVOO.xIs Page 1 of 2
Location:
GWA-1S
GWA-1D
GWA-10S
GWA-10D
GWA-11S
GWA-11D
Event:
Round 1
Round 2
Round 5
Round 1
Round 2
Round 5
Round 1
Round 2
Round 5
Round 1
Round 2
Round 5
Round 1
Round 2
Round 5
Round 1
Round 2
Round 5
Sample Date:
7/12/2015
9/30/2015
4/1/2016
7/12/2015
9/30/2015
4/1/2016
7/18/2015
10/2/2015
3/29/2016
7/18/2015
10/2/2015
3/29/2016
7/18/2015
10/2/2015
3/29/2016
7/18/2015
10/2/2015
3/29/2016
Constituent
Fraction
2L Standard,IMAC,
or DHHS
Unit
Aluminum
D
NS
u /I
340
190
115
150
100 U
88.5 J
690
630
810
1100
110
780
100 U
190
200
100 U
100 U
100 U
Aluminum
T
NS
u /I
760
320
1210
580
870
176
700
1200
885
1300
300
908 1
170
7400
220
1 170
2700
125
Antimony
D
NS
u /I
0.5 U
0.5 U
0.5 U 1
0.62
0.68
0.98
0.5 U
0.5 U
0.5 U
0.98 J+
3.8
5 U
0.5 U
0.5 U
0.5 U
0.82 1
3
2.2 J
Antimony
T
1
u /I
0.5 U
0.5 U
0.5 U
0.63
0.82
1.3
0.5 U
0.5 U
0.5 U
1.6
4.9
5 U
0.5 U
0.5 U
0.5 U
0.8
2.8
2 J
Arsenic
D
NS
u /I
0.25 J
0.5 U
0.078 J
2.3
1.2
1.9
3.5
3.2
5.5
1.5
0.29 J
1.2
1.1
0.9
0.47
2
3.1
3.8
Arsenic
T
10
u /I
0.49 J
0.48 J
1.6
2.4
2.5
2
5
6.2
5.6
1.7
0.56
1.3
1.3
7.5
0.5
2.1
4.2
4.5 J+
Barium
D
NS
u /I
340
280
124
6.4
6.3
5.6
260
280
300
24
11
21
500
530
330
20
22
20
Barium
T
700
u /I
340
320
124
11
19
4.6 J
260
280
320
23
10 1
23.8
490
570 1
333
22
40
27.9
Beryllium
D
NS
u /I
6.3
5.5
3.5
0.2 U
0.2 U
0.021 J
1.3
1.4
1.8
0.2 U
0.2 U
1 U
6.9
9.7
7.2
0.2 U
0.2 U
0.79 J
Beryllium
T
4
u /I
6
6.5
3.3 1
0.2 U
0.2 U
0.072 J+
1.4
1.4
1.7
0.2 U
0.2 U
1 U
6.6
10.9
6.8 J
0.068 J
0.11 J
1 UJ
Boron
D
NS
u /I
440
420
261
50 U
50 U
50 U
49 J
49 J
43 J
50 U
50 U
50 U
170
130
180
29 J
29 J
50 U
Boron
T
700
u /I
430
390
254
50 U
50 U
29.6 J
46 J
41 J
47.6 J
50 U
50 U
50 U
160
120
185
50 U
26 J
25 J
Cadmium
D
NS
u /I
0.46
0.47
0.14
0.2
0.043 J
0.05 J
0.14
0.12
0.18
0.08 U
0.08 U
0.8 U
0.62
0.76
0.38
0.067 J
0.14
0.8 U
Cadmium
T
2
u /I 1
0.46
0.47
0.16
0.2
0.037 J
0.15
0.14
0.17
0.24 J+
0.08 U
0.08 U
0.8 U
0.61
0.77
0.38 J+
0.062 J
0.13
0.8 UJ
Calcium
T
NS
u /I
8680
10900
2040
9780
10900
6400
1520
1390
1990
68800
21300
85200
38700
30900
15000
58000
56200
55000
Chromium
D
NS
u /I
12.5
7.7
1.3
1.3
0.5 U 1
4.7
0.54 J+
0.35 J
0.16 J
1.3 J+
0.75
0.9 J
0.75 J+
36.2
0.23 J+
0.37 J+
4.5
2.7 J
Chromium
T
10
u /I
29.7
32.1
11.2
4
37.1
11.1
1.4 J+
1.2 J+
0.42 J+
1 J+
0.96 J+
5 U
0.52 J+
66.2
0.19 1
1.5 J+
24.1
17.3 J
Cobalt
D
NS
u /I
8.4
6.3
6.8
1.4
2.6
6
30.6
30.8
40.7
0.5 U
0.5 U
1 U
7.4
10.2
11.1
1.5
2.3
2.4
Cobalt
T
1
u /I
10
7.4
7.6
1.6
3.4
5.2
30.4
32.2
42.2
0.5 UJ
0.29 J
1 U
7.4
13.2
11.2 J
1.6
3
3.2 J
Copper
D
NS
u /I
4.7
1.1
3.5
1.6
1.9
1
8.3 J+
2.3
11.6
2.1 J+
0.49 J
5.8
8.7 J+
4.2
10.3 J
6.8 J+
4.8
3.2 J
Copper
T
1000
u /I 1
0.96 J
1.3
4.6
1.1
3.5
0.95
1.4 J+ 1
2.1
1.6
0.94 J+
0.54 J
5 U
0.35 J+
4.5
0.76
1 UJ
2.9
5 U
Iron
D
NS
u /I
82
47 J
50 U
140 1
50 U
112
50 U
50 U
50 U
50 U
50 U
50 U
50 U
200
50 U
570
350
1000
Iron
T
300
u /I
780
230
1700
620
1400
167
35 J
1100
33.7 J
50 UJ
26 J
50 U
120
11700
26.5 J
810
4200
1410
Lead
D
NS
u /I
0.37
0.28
0.14
0.16
0.16 1
0.32
1.8 J+
1.3
0.8
0.074 J+
0.089 J
1 U
0.84 J+
0.54
0.11
0.48 J+
0.67
1 U
Lead
T
15
u /I
0.37
0.38
1
0.46
0.76
0.5
1.2
2.5
0.83
0.062 J
0.057 J
1 U
0.053 J
3.8
0.11
0.11
0.6
1 U
Magnesium
T
NS
u /I
29200
29700
10400
4000
4710
2840
5650
5930
7990
575
929
272
31100
32400
18100
16700
20300
21300
Manganese
D
NS
u /I
350
280
214
21
26
16.6
810
790
1000
5 U
5 U
5 U
330
260
180
180
240
220
Manganese
T
50
u /I
390
270
240
25
44
21.6 1
800
790
1110
5 U
3.3 J
5 U
320
370
178
190
270
221
Mercury
D
NS
u /I
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.25
0.191
0.54
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
Mercury
T
1
u /I
0.075 J+
0.2U
0.2U
0.2U
0.2U
0.2U
0.47
0.37
0.7
0.2U
0.2U
0.2U
0.2U
0.25
0.2U
0.2U
0.2U
0.2U
Methane
N
NS
u /I
2.5 J+
2.5 J+
1.6 J+
1.5 J+
1.3 J+
2.2 J+
1.2 J+
3J+
1.6 J+
2.1 J+
3.9 J+
1.8 J+
1 J+
1.1 J+
1.6 J+
1 10 U
4.8 J+
3.3 J+
Molybdenum
D
NS
u /I
0.26 J
0.13 J
0.5 U
5.2
3.8
4
0.5 U
0.5 U
0.5 U
6.4
2.2
2.9 J
0.5 U
0.36 J
0.5 U
2.3
3
2.4 J
Molybdenum
T
NS
u /I
0.55
0.59
0.25 J
5.2
4.6
5
0.12 J
0.15 J
0.5 U
5.5
2.4
2.8 J
0.5 U
0.88
0.5 U
2.3
2.9
2.8 J
Nickel
D
NS
u /I
35.8
28.9
14.2
8.2
16.6
19.3
7.6
7.1
10.4
0.6 J+
0.34 J
5 U
13.8
48.9
12.3
12.2
22.3
24.5
Nickel
T
100
u /I
45.2
43.1
17
8.6
28.4
15.8
7.8
7.8
10.6
0.71
0.88 J+
5 U
13.5
57.4
11.6
13
24.5
29.2
Potassium
T
NS
u /I
5180
5000 J
5000 U
5000 U
3280 J
2830 J
3540 J
3900 J
3400 J
19300
13100
19700
6690
7230
4290 J
9180
10300
8470
Selenium
D
NS
u /I
0.5 U
0.5 U
0.69 1
0.5 U
0.5 U
0.45 J
2.3
1.1
55.8
0.46 J
0.5 U
5 U
0.5 U
0.35 J
5.8
0.5 U
0.5 U
5 U
Selenium
T
20
u /I
0.5 U
0.5 U
0.79
0.5 U
0.5 U
0.64
10.6
1.7
55.5
0.38 J
0.22 J
5 U
0.52
0.53
5.8
0.5 U
0.5 U
5 U
Sodium
T
NS
u /I
15000
16100
5170
20100
18000
50200
11500
11800
11600
15300
12800
15500
22600 1
21700
13600
18000
21000
20600
Strontium
D
NS
u /I
180
240
47.9
66
75
57.6
15
15
17
570
360
590
480
480
170
270
300
290
Strontium
T
NS
u /I
180
200
46.5
70
80
44.6
15 1
15
18
560
340
640
460
450
172
280
310
286
Thallium
D
NS
u /I
0.34
0.37
0.14
0.022 J
0.051 J
0.1 U
0.18
0.24
0.18
0.022 J
0.035 J
1 U
0.27
0.38
0.24
0.029 J
0.033 J
1 U
Thallium
T
0.2
u /I
0.34
0.41
0.15
0.07 J
0.051 J
0.018 J
0.2 J
0.25
0.22
0.017 J+
0.017 J
1 U
0.3
0.53
0.23
0.041 J+
0.088 J
1 U
Uranium, Natural
T
NS
u /I
-
0.084 J
-
-
0.35 J
-
-
0.53
-
-
5 U
-
-
0.099 J
-
-
0.5 U
Vanadium
D
NS
u /I
1 U
1 U
0.3 U
1.1
0.45 J
0.74
1 U
1 U
0.3 U
7.4
2.6
2J
1 U
1 U
0.3 U
0.76 J+
1 U
3 U
Vanadium
T
0.3
u /I
0.29 J
0.57 J
1.7
1.5
1.7
0.87
1 U
1.1
0.3 U
7.9
2.9
1.9 J
1 U 1
6.3
0.3 U
0.75 J
4.2
3 U
Zinc
D
NS
u /I
19
15
16.6 J+
6.6 J
15
11.2 J+
22 J+
35
32
4.8 J+
10 U
10 U
43
100
47
16J+
42
12J+
Zinc
T
1000
ug/11
21
17
32.6
6.9 J
9.7 J
5.6 J
20
33
26.2
10 U
2.9 J
2.9 J
38
140
40.2
14
55 J+
24.8
Total Dissolved Solids
N
500000
u /I
380000
251000
75000
158000
135000
180000
138000
81000
109000
265000
120000
249000
578000
484000
225000
526000
541000
445000
Total Organic Carbon
N
NS
u /I
1000 U
1000 U
1000 U
1000 U
1000 U
1000 U
1000 U
1400
1000 U
980 J
1000 U
1000 U
1000 U
1000 U
11600 J
11100
1000 U
1 ono U
Total Suspended Solids
N
NS
u /I
18400
10800
11700
46200
8300
14000
29400
113000
2500 U
18600
86300
9300
6300
565000
2500 U
2600
312000
5000 U
Alkalinity, CO3
N
NS
u /I
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
155000
53800
177000
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
Alkalinity, HCO3
N
NS
u /I
1400 J
1200 J
5000 U
37200
33600
44600
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
19900
2800 J
1200 J
55900
49800
49500
Alkalinity, lab
N
NS
u /I
1400 J
1200 J
5000 U
37200
33600
44600
5000 U
5000 U
5000 U
200000
67400
216000
19900
2800 J
1200 J
55900
49800
49500
Chloride
N
250000
u /I 1
127000
133000
36900
27300
28200
50300
46500
48300
56300
12800
19000
16200
175000
188000
95000
137000
145000
141000
Nitrogen, NO2 plus NO3
N
NS
u /I
640
660
1100
420
650
870
270
270
280
200
280
27
270
240
230
170 1
94
69
Sulfate
N
250000
u /I
1000 U
540 J
650 J
4300
8800
6400
1000 U
1000 U
1400
2700
1800
2200
660 J
580 J
1000 U
5000
7600
6800
Sulfide
N
NS
u /I
100 U
100 U
100 U
100 U
100 U
100 U
100 U
100 UJ
100 U
100 U
100 U
100 U
100 U
100 UJ
100 U
100 U
100 UJ
100 U
Chromium VI
T
0.07
u /I
-
-
0.063
-
-
0.047
-
-
0.01 J
-
-
0.13
-
-
0.03 U
-
-
0.019 J+
Dissolved Oxygen
N
NS
m /I
3.98
4.4
7.1
5.64
3.22
1.8
3.08
2.2
3.5
2.99
0.5
0.4
5.06
4.29
5.0
2.92
0.68
0.5
Temperature
N
NS
Deg C
23.1
17.5
18.6
23
22.5
17.4 1
15.9
14.6
13.6
19.3
14.7
13.3
15.97
13.7
16.1
16.51
13.8
17
pH
N
6.5-8.5
SU 1
4.94
4.9
5.0
6.72
6.6
6.7
4.14
4.4
4.5
11.98
11.4
12.6
5.59
5.2
5.0
6.4
6.5
6.4
Turbidity, field
N
NS
NTU
8.32
2.0
8.2
11.66
9.9
7.2
7.14
8.9
1.7
7.21
9.2
8.0
3.13
6.28
2.1
9.5
11.91
6.0
Specific Conductivity field
N
NS
PS/cm
406.9
500.5
137.9
168.9
197.4
284
200.7
193.5
218
979
332
1076
704
649
362
644
630
663
Oxidation Reduction Potential
N
NS
mV
345.1
320.7
300.5
221.8
163.7
87.3
272.3
375.2
419.9
-45.4
-48.1 1
-72.1
226.1
207.1
174
56.9
15.2 1
89.4
c: �pwworking � tpa �d0915075 � Copy of DRAFT Belews_R5_2016Q1_PlusPriorityWells_Groundwater 20160413_REVOO.xIs Page 1 of 2

Fez
Table 1: Groundwater Analvtical Results (Accelerated Remediation AOI)
c: �pwworking � tpa �d0915075 � Copy of DRAFT Belews_R5_2016Q1_PlusPriorityWells_Groundwater 20160413_REVOO.xIs Page 2 of 2
Location:
GWA-16S
GWA-16D
GWA-17S
GWA-17D
GWA-18D
GWA-19S
GWA-20D
GWA-21S
GWA-21D
Event:
Round 1
Round 2
Round 5
Round 1
Round 2
Round 5
Round 1
Round 2
Round 5
Round 1
Round 2
Round 5
Round 5
Round 5
Round 5
Round 5
Round 5
Sample Date:
7/16/2015
9/29/2015
3/31/2016
7/16/2015
9/29/2015
3/30/2016
7/15/2015
9/29/2015
3/31/2016
7/15/2015
9/29/2015
3/30/2016
3/31/2016
3/31/2016
3/30/2016
3/30/2016
3/30/2016
Constituent
Fraction
2L Standard,IMAC,
or DHHS
Unit
Aluminum
D
NS
u /I
100 U
100 U
100 U
770
410
500
100 U
85 J
54 J
150
100 U
60 J
88 J+
1200
100 U
170
100 U
Aluminum
T
NS
u /l
330
88 J
449
810
480
512
400
11700
127
190
180
82.6 J
133
1260 1
147
228
59.8 J
Antimony
D
NS
u /I 1
0.2 J+
0.5 U
0.11 J
1.6 J+
2.2
1.2 J
0.5 U
0.5 U
0.5 U
0.22 J+
0.98
0.28 J
0.21 J
0.12 J
5 U
0.5 U
0.5 U
Antimony
T
1
u /I
0.25 J+
0.5U
0.111
1.5 J+
2.3
5U
0.5U
0.27J
0.5U
0.191
1
0.21J
0.3J
0.12J
5U
0.5U
0.5U
Arsenic
D
NS
u /1
0.5 U
0.5 U
0.1 U
1.8
2.3
1.2
0.14 J+
0.13 J
0.072 J
0.76 J+
0.64
0.21
1.3
3.8
2.1
0.4
0.45
Arsenic
T
10
u /1
0.5 U
0.5 U
0.19
2.1
2
1.1
0.16 J
0.54
0.1
0.8
0.68
0.29
1.8
4.4
2.6
0.58
0.47
Barium
D
NS
u /1
56
41
30
38
21
29
20
31
29
7.2
7.2
6.1
2.5 J+
530
63
240
5 U
Barium
T
700
u /1
57
44
33.6
40
23
30.4 1
25
130
34.6 1
7.6
7.7
7
1 2.8 J
519
69.8 1
260
114
Beryllium
D
NS
u /l
0.071 J
0.095 J
0.075 J
0.2 U
0.2 U
1 U
0.2 U
0.2 U
0.028 J
0.2 U
0.2 U
0.028 J
0.025 J
7.4
0.42 J
5.9
2.4
Beryllium
T
4
u /l
0.2U
0.098J
0.12
0.2U
0.2U
1 U
0.2U
0.15J
0.0181
0.2U
0.2U
0.14
0.014 J+
7.3
0.12J
6.3
2.6
Boron
D
NS
u /l
50 U
50 U
25 J
50 U
37 J
28 J
50 U
50 U
25 J
50 U
110
50 U
50 U
1300
5300
48 J
50 U
Boron
T
700
u /I
50 U
50 U
50 U
50 U
31 J
50 U
50 U
40 J
26.1 J
50 U
93
50 U
50 U
1300
5990
48.6 J
44.2 J
Cadmium
D
NS
u /l
0.09
0.067 J
0.08 U
0.08 U
0.08 U
0.8 U
0.08 U
0.08 U
0.11
0.08 U
0.08 U
0.21
0.08 U
0.45
0.67 J
0.39
0.55
Cadmium
T
2
u /l
0.08 U
0.067 J
0.051 J
0.12
0.063 J
0.8 U
0.08 U
0.05 J
0.16
0.08 U
0.07 J
0.08 U
0.08 U
0.55
0.63 J
0.38
0.58
Calcium
T
NS
u /l
1380
1110
303
26100
12200
6290
5200
7020
4510
20000
17200
19000
16100
15100 1
118000
10200
24700
Chromium
D
NS
u /l
0.48 J+
0.4 J
0.51
0.92 J+
1.2
1.2 J
0.23 J+
0.98
1.4
0.2 J+
0.32 J
1.4
1.4
3.9
5 U
0.27 J
0.19 J
Chromium
T
10
u /l
6
1
22.7
3.1 J+
1.1
1.6 J
50.7
27.6
5.9
0.73 J+
1.4 J+
1.4 J+
3.1
6.2
1.6 J
0.64 J+
0.73 J+
Cobalt
D
NS
u /l
5.5
4.5
2.7
0.5 U
0.5 U
1 U
1.4
2.8
16.1
0.5 U
0.5 U
0.071 J
0.53
37.5
8.5
24
2.1
Cobalt
T
1
u /I
5.6
4.2
3.3
0.5 U
0.5 U
1 U
2.6
6.4
16.8
0.5 U
0.5 U
0.13
0.65
42.7
9.6
29
2.3
Copper
D
NS
u /l
0.85 J+
2.8
1.5
1.9 J+
1.1 1
5 U
1 U
2
1 4.6
1 U
0.4 J
16.8
1.1
6.1
3.9 J
9.5
3.2
Copper
T
1000
u /l
0.89 J+
5.3
2.2
2.3 J+
3.2
5 U
1.4
11.2
9.9
0.43 J
1.6 J+
215
1 1.3
4.4
1.6 J
1.1
0.93
Iron
D
NS
u /l
50 U
50 U
29 J
50 U
50 U
50 U
510
1300
250
50 U
50 U
80
55 J+
30 J
600
35 J
50 U
Iron
T
300
u /I
610
140
957
79
74
28.4 J
1500
18800
266
39 J+
190
828
136
97.3
1130
90
44 J
Lead
D
NS
u /I
0.058 J+
0.1 U
0.1 U
0.059 J+
0.1 U
1 U
0.1 U
0.059 J
0.1 U
0.051 J
0.1 U
0.1 U
0.1 U
0.34
1 U
0.098 J
0.1 U
Lead
T
15
u /l
0.22
0.068 J
0.51
0.082 J
0.074 J
1 U
0.091 J+
2.4
0.1 U
0.1 U
0.15 J+
0.096 J
0.1 U
0.4
1 U
0.15
0.1 U
Magnesium
T
NS
u /I
1230
1120
929
305 1
105
77.8J
3350 1
7330
4100
296 1
1100
1660
2120
25500
53600
18800
21400
Manganese
D
NS
u /I
140
110
70
5 U
5 U
5 U
380
630
360
5 U
2.5 J
15
33 J+
1200
980
560
5 U
Manganese
T
50
u /l
130
110
70.4
5 U
5 U
5 U
430
740
330
5 U
4.9 J
15
35.8
1230
1040
559
83.5
Mercury
D
NS
u /l
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
Mercury
T
1
u /I
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
Methane
N
NS
u /I
2J+
3.5 J
1.8 J+
10 U
2.9 J
2.5 J+
2.2 J+
2.9 J+
2.5 J+
1.9 J+
1.4 J+
3.8 J+
1.9 J+
1.6 J+
3.1 J+
2.2 J+
1.8 J+
Molybdenum
D
NS
u /I
0.5 U
0.31 J
0.5 U
8.4
18.2
12.8
5.8
2.8
2.8
1.4
1.2
2
1.7
0.5 U
3.1 J
0.5 U
0.5 U
Molybdenum
T
NS
u /l
0.17 J
0.26 J
0.64
8.9 1
15.2
14.1
5.9
4.1
6.3
1.5
1.3
7.4
2.1
0.5 U
3.1 J
0.5 U
0.14 J
Nickel
D
NS
u /I
3.6
2.5
3.3
0.69 J+
0.9
5 U
14.5
5.5
17
0.5 U
0.47 J
2.1
1 1.7
24.9
15.5 1
11.5
6.5
Nickel
T
100
u /I
5.7
2.3
14.3
1.7 J+
0.74
5 U
28.7
12.5
19.8
0.36 J
0.58
1.2
1.9
32.5
15.6
13.2
6.5
Potassium
T
NS
u /I
5000 U
5000 U
5000 U
41500
40600
71500
3710 J
6960
3110 J
4860 J
3500 J
5000 U
2850 J
6140
10400
4110 J
6050
Selenium
D
NS
u /l
0.5 U
0.5 U
0.5 U
0.4 J
0.69
5 U
0.5 U
0.5 U
0.57
0.5 U
0.5 U
0.5 U
0.5 U
44.3
5 U
4.5
0.5 U
Selenium
T
20
u /I
0.5 U
0.5 U
0.58
0.53
0.6
5 U
0.5 U
0.32 J
0.54
0.5 U
0.5 U
0.5 U
0.5 U
53.8
5 U
5.4
0.5 U
Sodium
T
NS
u /I
5000 U
5000 U
5000 U
32600
53700
53100
4340J
5180
5090
7860
6840
6070
10600
9820
36500
19500
25000
Strontium
D
NS
u /I
16
13
7.2
580
260
390
22
22
20
75
66
57
84 J+
91
670
140
5 U
Strontium
T
NS
u /l
15
15
7.5
570
270
381
23
37
21.1
79
64
59.2
84.3
92.1 1
724
145
304
Thallium
D
NS
u /I
0.051 J+
0.07 J
0.038 J
0.1 U
0.1 U
1 U
0.028 J+
0.1 U
0.1 U
0.021 J+
0.1 U
0.1 U
0.016 J
0.35
1 U
0.16
0.15
Thallium
T
0.2
u /I
0.054 J
0.06 J
0.036 J
0.1 U
0.1 U
1 U
0.1 U
0.1
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.34
1 U
0.19
0.17
Uranium, Natural
T
NS
u /I
-
-
-
-
-
-
-
-
0.5 U
-
-
0.25 J
0.83
0.14 J
5 U
0.5 U
0.5 U
Vanadium
D
NS
u /l
1 U
1 U
0.073 J
9.6
11.3 1
2.5 J
1 U
0.88 J
0.2 J
2.8
1.3
0.38
1.3
0.3 U
3 U
0.3 U
0.073 J
Vanadium
T
0.3
u /l
0.64 J
0.31 J
2.1
10.2
9.7
3.6
1.8
33.9
0.34
3.4
1.6 1
0.62
2
0.13 J+
3 U
0.12 J
0.12 J
Zinc
D
NS
u /I
9.1 J
21
47
10 U
2.8 J
3.8 J
10 U 1
6.5 J
56
10 U
10 U
86
4.1 J+
42
61
20
10 U
Zinc
T
1000
u /l
8.5 J
22
44
10 U
69
3.9 J
14 J+
47
65.8
10 U
10 U
53.2
5.8 J 1
41.4
70.1
20
7.7 J
Total Dissolved Solids
N
500000
u /l
30000
34000
25000 U
256000
257000
255000
70000
44000
49000
109000
59000
83000
79000
251000
814000
186000
226000
Total Organic Carbon
N
NS
u /I 1
1000 U
1000 U
1000 U
2500
1200
900 J
1000 U
510 J
1000 U
510 J
1000 U
1000 U
580 J
1000 U
550 J
1000 U
1000 U
Total Suspended Solids
N
NS
u /I
29400
2500 U
6900
16400
5000
2500 U
58700
915000
2500 U
2500 U
5500
6700
2500 U
2500 U
3900
2500 U
2500 U
Alkalinity, CO3
N
NS
u /l
5000 U
5000 U
5000 U
57400
46600
111000
5000 U
5000 U
5000 U
52000 1
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
Alkalinity, HCO3
N
NS
u /l
10700
7000
5500
113000
88600
50005
32200
28700
21900
12700
41800 1
54600
53000
5000 U
17200
2400 J
7500
Alkalinit,lab
N
NS
u /l
10700
7000
5500
170000
135000
201000
32200 1
28700
21900
64700
41800
54600
53000
5000 U
17200
2400J
7500
Chloride
N
250000
u /I
670J
1100
690J
3000
2900
1800
1100
1600
1200
1400
1700
950J
7200
159000
369000
104000
138000
Nitrogen, NO2 plus NO3
N
NS
u /I
20 UJ
20 J
11 J
14 J+
430
67
100 J-
56
11 J
20 UJ
20 U
20 U
220 J+
120 J+
101
250
460
Sulfate
N
250000
u /I I
430J
980J
820 J+
25900 1
38400
19900
5600
8100
19500
13500
14400
13300
5800
740J
44100
1000
2300
Sulfide
N
NS
u /I
100 U
100 U
100 U
100 U
100 U
100 U
100 U
100 U
100 U
100 U
100 U
100 U
100 U
100 U
100 U
100 U
100 U
Chromium VI
T
0.07
u /I
-
0.039
0.041
-
0.77
0.65
-
0.02 U
2.2
-
0.013 J
0.03 J
0.47
0.025 J
0.03 U
0.03 U
0.078
Dissolved Oxygen
N
NS
m /I
5.91
4.9
4.7
4.81
3
0.9
0.76
1.49
0.9
0.56
1.69
1.1
3.7
5.1
0.8
4.9
2.6
Temperature
N
NS
Deg C
21.4
21.6
18.7
20.1
21.4
18.8
23.6 1
24.5
18.8
18.3
22.3
17.9
18.7
16.4
20.4
15.1
16.1
pH
N
6.5-8.5
SU
5.43
5.2
4.7
11.52
11
11.2
6.7
6.37
6.0
10.29
8.68
8.2
8.1
4.4
5.7
4.8
5.1
Turbidity, field
N
NS
NTU
70
9
9.7
9.6
5.4
4.5
21.7
7.94
9.2
3.25
13.13
9.4
1.8
7.6
7.1
1.4
2.4
Specific Conductivity field
N
NSPS/Cm
32
25.3
20.6
63
592
832
102
116.1
91
172
133.7
150
150.4
559.8
1330
375.9
505.4
Oxidation Reduction Potential
N
NS
mV
140
1 74.7 1
294.8
96.8
2.4
116.3
13.7
-14.7
139.3
103.4
-26.4
44.9
21.6
366
-19.9
127.8
1 194.9
c: �pwworking � tpa �d0915075 � Copy of DRAFT Belews_R5_2016Q1_PlusPriorityWells_Groundwater 20160413_REVOO.xIs Page 2 of 2

07Z
Table 2: Area of Wetness Analytical Results (Accelerated Remediation AOI)
c:tpwworkingttpatd0915075iCopy of DRAFT Belews_Areos Of Wetness Results to Date (02L)_20160414_REVOO.xls Page 1 Of 1
Location:
S-2
S-3
S-4
S-5
Event:
Round 1
Round 2
Round 5
Round 1
Round 2
Round 5
Round 1
Round 2
Round 5
Round 1
Round 2
Round 5
Sample Date:
7/16/2015
10/5/2015
3/31/2016
7/17/2015
10/5/2015
3/31/2016
7/17/2015
10/5/2015
3/31/2016
7/17/2015
10/5/2015
3/31/2016
Constituent
Fraction
2L Standard,
IMAC, or DHHS
EUnit
Aluminum
D
NS
ug/I
100 U
100 U
100 U
100 U
80 J
100 U
100 U
100 U
Aluminum
T
NS
u /I
50 J
87 J
230
79.1 J
3000
509
330
106
Anti mon
D
NS
u /I
0.5 U
0.5 U
0.5 U
0.5 U
0.5 U
0.5 U
0.5 U
0.5 U
0.5 U
0.5 U
0.5 U
0.5 U
Antimony
T
1
u /I
0.5 U
0.5 U
0.5 U
0.5 U
0.5 U
0.5 U
0.5 U
0.5 U
0.5 U
0.5 U
0.5 U
0.5 U
Arsenic
D
NS
u /I
0.68
0.51
0.31
0.55
0.42 J
0.27
0.38 J
0.54
0.16
1.1
0.73
0.25
Arsenic
T
10
u /I
0.81
0.64
0.48
1.2
0.98
0.39
0.53
4
1.9
1.3
0.73
0.42
Barium
D
NS
u /I
130
110
145
12
15
11.3
44
52
90.5
11
10
7.6
Barium
T
700
u /I
130
97
139
13
16
11.4
48
130
86.9
12
11
7.5
Beryllium
D
NS
u /I
0.18 J
0.53
0.58
0.2 U
0.072 J
0.015 J+
0.31
0.5
1.4
0.2 U
0.071 J
0.034 J+
Beryllium
T
d
u /I
0.18 J
0.6
0.8
0.1 J
0.16 J
0.069 J+
0.48
5.1
2.6
0.2 U
0.2 U
0.041 J+
Boron
D
NS
u /I
110
110
118
50 U
50 U
50 U
50 U
50 U
50 U
50 U
50 U
50 U
Boron
T
700
u /I
120
89
111
50 U
50 U
50 U
50 U
50 U
50 U
50 U
50 U
50 U
Cadmium
D
NS
u /I
0.08 U
0.1
0.13
0.08 U
0.08 U
0.08 U
0.075 J
0.081
0.18
0.08 U
0.08 U
0.08 U
Cadmium
T
2
u /I
0.069 J
0.11
0.18
0.08 U
0.08 U
0.08 U
0.072 J+
0.62
0.22
0.08 U
0.08 U
0.08 U
Calcium
T
NS
u /I
7530
5460
7300
1290
1250
1110
9440
8420
12000
2690
1520
1700
Chromium
D
NS
u /I
0.54
0.27 J
0.18 J+
0.36 J
0.32 J
0.38 J+
0.46 J
0.32 J
0.15 J+
0.4 J
0.53
0.42 J+
Chromium
T
10
u /I
0.27 J
0.37 J
0.65 J+
11.5
0.33 J
0.25 J+
0.35 J
0.52
0.96 J+
0.51
0.36 J
0.34 J+
Cobalt
D
NS
u /I
0.75
1
1.2
0.87
0.19 J
0.09 J
0.8
1.1
2.3
0.76
0.5 J
0.13
Cobalt
T
1
u /I
0.79
1.3
1.3
1.1
0.5 J
0.16
0.86
9.8
3.2
0.92
0.43 J
0.2
Copper
D
NS
u /I
0.34 J+
1.5
1 J+
1.3
1.5
1.2 J+
1.1
0.24 J
1.8 J+
2.2
7.1
0.55 J+
Copper
T
1000
u /I
0.39 J
0.38 J
0.38 J
1.8
1.2
0.33 J
0.28 J
3.2
1.1
5.6
1.1
0.4 J
Iron
D
NS
u /I
120
58
73
42.2 J
630
41.7 J
120
53
Iron
T
300
u /I
160
243
740
186
13400
1730
620
218
Lead
D
NS
u /I
0.1 U
0.2
0.1 U
0.09 J+
0.16
0.1 U
0.076 J+
0.057 J
0.1 U
0.11 J+
0.83
0.1 U
Lead
T
15
u /I
0.1 U
0.15
0.22
0.43 J+
0.42
0.12
0.13 J+
2.7
1
0.25 J+
0.3
0.17
Magnesium
T
NS
u /I
8580
6180
8260
880
1030
1050
6530
6190
10200
1640
1070
1240
Manganese
D
NS
u /I
320
210
136
110
23
5.1
70
140
64.5
130
78
8.5
Manganese
T
501
u /I
270
180
141
110
34
9.4
75
340
79.8
140 1
56
11.2
Mercury
T
1
u /I
0.000726
0.00121 J+
0.00126
0.00433
0.00221 J+
0.00117
0.00664
0.000676
0.00194
0.00284
0.00161
0.0013 J+
Methane
N
NS
u /I
11 J+
26.7
12.6 J+
4.9 J+
3.4 J+
1.9 J+
13.5
25.2
3.9 J+
11.7
7.8 J+
5.3 J+
Molybdenum
D
NS
u /I
0.5U
0.5U
0.5U
0.5U
0.5U
0.5U
0.5U
0.5U
0.5U
0.5U
0.5U
0.5U
Molybdenum
T
NS
u /I
0.5U
0.5U
0.5U
0.13J
0.5U
0.5U
0.5U
0.5U
0.5U
0.5U
0.5U
0.5U
Nickel
D
NS
u /I
3.4
3.3
5.1
0.5 U
0.46 J
0.5 U
1.5
1.1
4.1
0.4 J
0.53
0.7
Nickel
T
100
u /I
3.5
4
5.1
4.1
0.59
0.5 U
1.5
7.4
3.5
0.38 J
0.38 J
0.5 U
Potassium
T
NS
u /I
3860 J
2990 J
3090 J
5000 U
5000 U
5000 U
2940 J
3020 J
3330 J
5000 U
5000 U
5000 U
Selenium
D
NS
u /I
0.5 U
0.5 U
0.5 U
0.5 U
0.5 U
0.5 U
0.5 U
0.5 U
0.5 U
0.5 U
0.5 U
0.5 U
Selenium
T
20
u/I
0.5U
0.5U
0.5U
0.5U
0.5U
0.5U
0.5U
0.5U
0.41J
0.5U
0.5U
0.5U
Sodium
T
NS
u /I
10500
7760
8800
3000 J
2750 J
2550 J
8860
8690
11100
2880 J
2520 J
2570 J
Strontium
D
NS
u /I
98
64
85.8
14
16
13.5
120
110
154
28
19
18.8
Strontium
T
NS
u /I
99
58
78.7
15
15
12.4
130
160
138
29
17
17.3
Thallium
D
NS
u /I
0.17
0.087 J
0.039 J
0.043 J
0.018 J
0.1 U
0.11
0.11
0.076 J
0.041 J
0.029 J
0.1 U
Thallium
T
0.2
u /I
0.15
0.11
0.037 J
0.056 J+
0.056 J
0.1 U
0.12 J+
0.35
0.12
0.059 J+
0.039 J
0.1 U
Vanadium
D
NS
u /I
1 U
1 U
0.074 J+
1 U
1 U
0.12 J+
1 U
1 U
0.3 U
1 U
1 U
0.16 J+
Vanadium
T
0.3
u /I
0.46 J
1 U
0.31
0.5 J
0.34 J
0.18 J
1 U
2.6
1.2
0.47 J
0.41 J
0.34
Zinc
D
NS
u /I
10U
16
12.2
101-1
12
10U
10U
7.3J
6J
101-1
7.4J
101-1
Zinc
T
1000
u/I
10U
4.1J
5.1J
1OU
10U
10U
3.8J
19
5.6J
1OU
2.6J
1OU
Total Dissolved Solids
N
500000
u /I
152000
80000
99000
37000
45000
25000 U
143000
138000
140000
49000
41000
25000 U
Total Organic Carbon
N
NS
u /I
1100
1700
1000 U
2900
3700
510 J
740 J
1900
1000 U
700 J
2300
1000 U
Total Suspended Solids
N
NS
u /I
2700
5000 U
9900
4000
198000
4200
7000
58100
32600
6800
3900
5000 U
Percent Moisture
N
NS
%
44
37.5
75.1
40.2
Alkalinity, CO3
N
NS
u /I
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
Alkalinity, HCO3
N
NS
u /I
3200 J
2100 J
3300 J
9200
3800 J
5300
6800
4500 J
3800 J
15000
8200
9100
Alkalinity, lab
N
NS
u /I
3200 J
2100 J-
3300 J
9200
3800 J-
5300
6800
4500 J-
3800 J
15000
8200 J-
9100
Cation Exchange Capacity
N
NS
mecill00
31
30
27
Chloride
N
250000
u /I
55000
38400
53400
2800
5900
4500
42600
43700
70200
2700
3200
2800
Nitrogen, NO2 plus NO3
N
NS
u /I
76
181
42J+
26
11 J
14 J+
71
26
67 J+
27
34
160 J+
Sulfate
N
250000
u /I
1000 U
1300
1000
1100
2400
1300
1000 U
1000
770J
1400
3000
1500
Sulfide
N
NS
u /I
100 U
100 U
100 U
100 U
100 U
100 U
100 U
100 U
100 U
100 U
100 U
100 U
Chromium VI
T
0.07
u /I
-
0.03 U
-
0.018 J
-
0.03 U
-
0.034
H
N
8.5
SU
5.1 J
5.5 J
5.8 J
5.1 J
Oxidation Reduction Potential
N
NS
mV
240 J
250 J
210 J
Chromium VI
D
0.07
u /I
0.02 U
0.01 J
0.02 U
Chromium VI
T
0.07
u /I
0.02 U
-
Dissolved Oxygen
N
NS
m /I
7.23
5.6
7.2
2.54
7.2
7.9
6.29
5.8
7.9
8.55
4.5
8.5
Temperature
N
NS
Deg C
22.5
15.8
17.8
20.4
16
16.5
18.2
16.4
16.7
21.99
16.1
16
H
N
6.5-8.5
SU
5.6
6
6.3
5.91
6.4
7.2
6.14
6
6.2
6.92
6.3
6.8
Turbidity, field
N
NS
NTU
3.25
5.21
16.3
10.6
16.9
3.4
10.5
93.2
45.8
5.98
7.61
2.7
Sp ecific Conductivity field
N
NS
pS/cm
215
148.8
192
39.2
37.1
36.9
185.8
172.3
249.8
162
38.2
37.5
Oxidation Reduction Potential
N
NS
mV
1119
156.9
152.1
137.5
170.3
203.2
134
160
190.4
169.9
122.4
188.8
c:tpwworkingttpatd0915075iCopy of DRAFT Belews_Areos Of Wetness Results to Date (02L)_20160414_REVOO.xls Page 1 Of 1

F)l
SITE LOCATION MAP
BELEWS CREEK STEAM STATION
SITE LANDFILLS AND STRUCTURAL FILL
STOKES COUNTY, NORTH CAROLINA
DATE
FIGURE
APRIL 2016

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NOTES:
1. PARCEL DATA FOR THE SITE WAS OBTAINED FROM DUKE ENERGY REAL ESTATE AND IS
APPROXIMATE.
2. SHALLOW MONITORING WELLS (S) ARE SCREENED ACROSS THE SHALLOW FLOW LAYER.
3. DEEP MONITORING WELLS (D) ARE SCREENED IN THE DEEP FLOW LAYER.
4. TOPOGRAPHY DATA FOR THE SITE WAS OBTAINED FROM NCDOT WEB SITE (DATED 2010).
S. AERIAL PHOTOGRAPHY WAS OBTAINED FROM WSP (DATED APRIL 2014).
6. THE COMPLIANCE BOUNDARY IS ESTABLISHED ACCORDING TO THE DEFINITION FOUND IN
15A NCAC 02L.0107 (a).
SCALE (FEET)
300' 0 300' 600'
/" = 600'
CSA GROUNDWATER MONITORING WELL
10 LOCATION
INTERIM ACTION FIELD INVESTIGATION
ACCELERATED REMEDIATION AOI
DUKE ENERGY CAROLINAS, LLC
BELEWS CREEK STEAM STATION ASH BASIN
STOKES COUNTY, NORTH CAROLINA
NT
AOW AND SEDIMENT SAMPLE LOCATION
POST -CSA ADDITIONAL ASSESSMENT
GROUNDWATER MONITORING WELL
PROPOSED SOIL BORING (INTERIM ACTION)
PROPOSED OBSERVATION WELL (INTERIM ACTION)
DATE
APRIL 2016
FIGURE
3