NC0005363_Weatherspoon Coal Pile Asmt Tech Memo_20180116

Former Coal Pile Assessment Tech Memo January 12, 2018
W.H. Weatherspoon Power Plant Page 2 of 3
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The topography at the coal pile area generally slopes toward the south and southeast.
Surface water that falls on the northeastern half of the coal pile area drains to a low
lying area along the southeast and eastern perimeter of the coal pile area. Surface water
that collects in this area flows into a drainage pipe beyond the western perimeter of the
coal stockpile area. The drainage pipe transports surface water underneath the former
rail spur and the discharge flows into a wetland located between the coal pile area, ash
basin, and cooling pond. Surface water on the southwestern half of the coal pile area
drains toward the south and southwest and into the cooling pond.
Coal Pile Area Assessment Objectives
Objectives of the coal pile area assessment include the following:
Characterize inorganic constituents associated with coal pile area soils;
Compare inorganic constituent concentrations in coal pile area soils and site
background soils;
Characterize inorganic constituent concentrations in groundwater underlying the
coal pile area and just beyond the coal pile area perimeter; and
Compare inorganic constituent concentrations in coal pile area groundwater and
site background groundwater.

Soil Assessment
Coal pile area soils will be sampled and analyzed for inorganic parameters to determine
if they are a secondary source of coal pile constituents that can leach into underlying
groundwater. Soil samples will be collected from 17 soil boring locations (CPA-SB1
through CPA-SB17) presented in Figure 1 using a GeoProbe© rig. Soil samples will be
collected from the near ground surface (2 to 3 foot) and at approximately 2-foot
intervals to the top of the groundwater table. Soil samples will be analyzed for
inorganic parameters consistent with assessment of areas used for coal and CCR
management (Table 1).
Continuous soil cores will be collected from the ground surface to the first confining
unit at each proposed well pair and at CPA-2I using a GeoProbe© rig. The continuous
soil cores will serve four purposes:
Continuous soil cores will be used to document the underlying stratigraphy;
Continuous soil cores will be used to identify the zones where shallow (Surficial
sands) and intermediate (Yorktown Formation) wells will be screened;
Soil samples will be collected from a depth corresponding to the middle of the
shallow and intermediate well screens; and
Former Coal Pile Assessment Tech Memo January 12, 2018
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Documentation of the underlying stratigraphy (#1 above) will provide the
flexibility of using different types of drill rigs (e.g., rotosonic, hollow-stem auger)
to install the shallow and deep coal pile assessment wells.
Groundwater Assessment
Fifteen coal pile assessment (CPA) groundwater monitoring wells will be installed to
characterize coal pile area groundwater. Seven shallow (“S”) and seven intermediate
(“I”) groundwater monitoring wells (CPA-1S/I, CPA-3S/I, CPA-4S/I, CPA-5S/I, CPA-
6S/I, CPA-7S/I, and CPA-8S/I) will be installed as well pairs and CPA-2I will be installed
as a single intermediate well.
Proposed CPA well installation locations are shown on Figure 1 and proposed well
details are provided in Table 2. Groundwater samples will be analyzed for the field
parameters (e.g., pH, conductivity, and turbidity) and inorganic constituents consistent
with assessment of areas used for coal and CCR management Table 3.
Coal Pile Assessment Report
A coal pile assessment report will be prepared once all soil and groundwater sample
analytical data is received. The report will include the following components:
1) Site History and Source Characterization
2) Site Geology and Hydrogeology
3) Sampling Results
4) Site Conceptual Model
5) Conclusions and Recommendations

Attachments: Table 1: Soil Sample Analytical Methods
Table 2: Proposed Coal Pile Assessment Soil Samples and Monitoring Wells
Table 3: Groundwater Analytical Methods
Figure 1: Proposed Monitoring Well & Soil Boring Location Map
Former Coal Pile Assessment Tech Memo January 12, 2018
W.H. Weatherspoon Power Plant

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Memo\V4\Weatherspoon Coal Pile Asmt Tech Memo (1-12-18).docx
ATTACHMENTS

TABLE 1
SOIL ANALYTICAL METHODS
W.H. WEATHERSPOON POWER PLANT
DUKE ENERGY PROGRESS, LLC, LUMBERTON, NC
INORGANIC COMPOUNDS UNITS METHOD
Aluminum mg/kg EPA 6010D
Antimony mg/kg EPA 6020B
Arsenic mg/kg EPA 6020A
Barium mg/kg EPA 6010C
Beryllium mg/kg EPA 6020B
Boron mg/kg EPA 6010C
Cadmium mg/kg EPA 6020A
Calcium mg/kg EPA 6010C
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 6020A
Magnesium mg/kg EPA 6010C
Manganese mg/kg EPA 6010C
Mercury mg/kg EPA Method 7471B
Molybdenum mg/kg EPA 6010C
Nickel mg/kg EPA 6010C
Nitrate as Nitrogen mg/kg EPA 9056A
pH SU EPA 9045D
Potassium mg/kg EPA 6010C
Selenium mg/kg EPA 6020A
Sodium mg/kg EPA 6010C
Strontium mg/kg EPA 6010C
Sulfate mg/kg EPA 9056A
Thallium (low level) (SPLP Extract only)mg/kg EPA 6020A
Total Organic Carbon mg/kg EPA 9060
Vanadium mg/kg EPA 6020A
Zinc mg/kg EPA 6010C
Notes:
1. Soil samples to be analyzed for Total Inorganics using USEPA Methods 6010/6020 and pH using USEPA Method 9045, as noted above.
meq/100g - millequivalents per 100 grams
mg/kg - Milligrams per kilogram
mV - Millivolts
S.U. - Standard Unit
Prepared by: RBI Checked by: SRW/TCP/VTV
2. Analytical methods and reporting limits as presented were applicable at time of CSA field implementation in 2015. Analytical methods
and reporting limits are updated periodically and applied as appropriate.
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Table 1 Weatherspoon Coal Pile Asmt Tech Memo Page 1 of 1
TABLE 2
PROPOSED COAL PILE ASSESSMENT SOIL SAMPLES AND MONITORING WELLS
W.H. WEATHERSPOON POWER PLANT
DUKE ENERGY PROGRESS, LLC, LUMBERTON, NC
Monitoring
Well ID
Estimated
Well Depth
(feet bgs)
Soil Sample ID
(Estimated Depth
Interval in feet bgs)
Comments
----CPA-SB1 (2-3)Unsaturated soil sample (water table <20 feet bgs)
----CPA-SB1 (5-6)Unsaturated soil sample
----CPA-SB1 (8-9)Unsaturated soil sample
----CPA-SB1 (11-12)Unsaturated soil sample
----CPA-SB1 (14-15)Unsaturated soil sample
----CPA-SB1 (17-18)Unsaturated soil sample
CPA-1S 35 CPA-SB1 (29-31)Soil sample from shallow well screened interval
CPA-1I 65 CPA-SB1 (59-61)Soil sample from deep well screened interval
----CPA-SB2 (2-3)Unsaturated soil sample (water table <20 feet bgs)
----CPA-SB2 (5-6)Unsaturated soil sample
----CPA-SB2 (8-9)Unsaturated soil sample
----CPA-SB2 (11-12)Unsaturated soil sample
----CPA-SB2 (14-15)Unsaturated soil sample
----CPA-SB2 (17-18)Unsaturated soil sample
CPA-2I 65 CPA-SB2 (59-61)Soil sample from deep well screened interval
----CPA-SB3 (2-3)Unsaturated soil sample (water table <20 feet bgs)
----CPA-SB3 (5-6)Unsaturated soil sample
----CPA-SB3 (8-9)Unsaturated soil sample
----CPA-SB3 (11-12)Unsaturated soil sample
----CPA-SB3 (14-15)Unsaturated soil sample
----CPA-SB3 (17-18)Unsaturated soil sample
CPA-3S 35 CPA-SB3 (29-31)Soil sample from shallow well screened interval
CPA-3I 65 CPA-SB3 (59-61)Soil sample from deep well screened interval
----CPA-SB4 (2-3)Unsaturated soil sample (water table <20 feet bgs)
----CPA-SB4 (5-6)Unsaturated soil sample
----CPA-SB4 (8-9)Unsaturated soil sample
----CPA-SB4 (11-12)Unsaturated soil sample
----CPA-SB4 (14-15)Unsaturated soil sample
----CPA-SB4 (17-18)Unsaturated soil sample
CPA-4S 35 CPA-SB4 (29-31)Soil sample from shallow well screened interval
CPA-4I 65 CPA-SB4 (59-61)Soil sample from deep well screened interval
----CPA-SB5 (2-3)Unsaturated soil sample (water table <20 feet bgs)
----CPA-SB5 (5-6)Unsaturated soil sample
----CPA-SB5 (8-9)Unsaturated soil sample
----CPA-SB5 (11-12)Unsaturated soil sample
----CPA-SB5 (14-15)Unsaturated soil sample
----CPA-SB5 (17-18)Unsaturated soil sample
CPA-5S 35 CPA-SB5 (29-31)Soil sample from shallow well screened interval
CPA-5I 65 CPA-SB5 (59-61)Soil sample from deep well screened interval
----CPA-SB6 (2-3)Unsaturated soil sample (water table <20 feet bgs)
----CPA-SB6 (5-6)Unsaturated soil sample
----CPA-SB6 (8-9)Unsaturated soil sample
----CPA-SB6 (11-12)Unsaturated soil sample
----CPA-SB6 (14-15)Unsaturated soil sample
----CPA-SB6 (17-18)Unsaturated soil sample
CPA-6S 35 CPA-SB6 (29-31)Soil sample from shallow well screened interval
CPA-6I 65 CPA-SB6 (59-61)Soil sample from deep well screened interval
----CPA-SB7 (2-3)Unsaturated soil sample (water table <20 feet bgs)
----CPA-SB7 (5-6)Unsaturated soil sample
----CPA-SB7 (8-9)Unsaturated soil sample
----CPA-SB7 (11-12)Unsaturated soil sample
----CPA-SB7 (14-15)Unsaturated soil sample
----CPA-SB7 (17-18)Unsaturated soil sample
CPA-7S 35 CPA-SB6 (29-31)Soil sample from shallow well screened interval
CPA-7I 65 CPA-SB6 (59-61)Soil sample from deep well screened interval
----CPA-SB8 (2-3)Unsaturated soil sample (water table <20 feet bgs)
----CPA-SB8 (5-6)Unsaturated soil sample
----CPA-SB8 (8-9)Unsaturated soil sample
----CPA-SB8 (11-12)Unsaturated soil sample
----CPA-SB8 (14-15)Unsaturated soil sample
----CPA-SB8 (17-18)Unsaturated soil sample
CPA-8S 35 CPA-SB8 (29-31)Soil sample from shallow well screened interval
CPA-8I 65 CPA-SB8 (59-61)Soil sample from deep well screened interval
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TABLE 2
PROPOSED COAL PILE ASSESSMENT SOIL SAMPLES AND MONITORING WELLS
W.H. WEATHERSPOON POWER PLANT
DUKE ENERGY PROGRESS, LLC, LUMBERTON, NC
Monitoring
Well ID
Estimated
Well Depth
(feet bgs)
Soil Sample ID
(Estimated Depth
Interval in feet bgs)
Comments
----CPA-SB9 (2-3)Unsaturated soil sample (water table <20 feet bgs)
----CPA-SB9 (5-6)Unsaturated soil sample
----CPA-SB9 (8-9)Unsaturated soil sample
----CPA-SB9 (11-12)Unsaturated soil sample
----CPA-SB9 (14-15)Unsaturated soil sample
----CPA-SB9 (17-18)Unsaturated soil sample
----CPA-SB10 (2-3)Unsaturated soil sample (water table <20 feet bgs)
----CPA-SB10 (5-6)Unsaturated soil sample
----CPA-SB10 (8-9)Unsaturated soil sample
----CPA-SB10 (11-12)Unsaturated soil sample
----CPA-SB10 (14-15)Unsaturated soil sample
----CPA-SB10 (17-18)Unsaturated soil sample
----CPA-SB11 (2-31 Unsaturated soil sample (water table <20 feet bgs)
----CPA-SB11 (5-6)Unsaturated soil sample
----CPA-SB11 (8-9)Unsaturated soil sample
----CPA-SB11 (11-12)Unsaturated soil sample
----CPA-SB11 (14-15)Unsaturated soil sample
----CPA-SB11 (17-18)Unsaturated soil sample
----CPA-SB12 (2-3)Unsaturated soil sample (water table <20 feet bgs)
----CPA-SB12 (5-6)Unsaturated soil sample
----CPA-SB12 (8-9)Unsaturated soil sample
----CPA-SB12 (11-12)Unsaturated soil sample
----CPA-SB12 (14-15)Unsaturated soil sample
----CPA-SB12 (17-18)Unsaturated soil sample
----CPA-SB13 (2-3)Unsaturated soil sample (water table <20 feet bgs)
----CPA-SB13 (5-6)Unsaturated soil sample
----CPA-SB13 (8-9)Unsaturated soil sample
----CPA-SB13 (11-12)Unsaturated soil sample
----CPA-SB16 (14-15)Unsaturated soil sample
----CPA-SB13 (17-18)Unsaturated soil sample
----CPA-SB14 (2-3)Unsaturated soil sample (water table <20 feet bgs)
----CPA-SB14 (5-6)Unsaturated soil sample
----CPA-SB14 (8-9)Unsaturated soil sample
----CPA-SB14 (11-12)Unsaturated soil sample
----CPA-SB14 (14-15)Unsaturated soil sample
----CPA-SB14 (17-18)Unsaturated soil sample
----CPA-SB15 (2-3)Unsaturated soil sample (water table <20 feet bgs)
----CPA-SB15 (5-6)Unsaturated soil sample
----CPA-SB15 (8-9)Unsaturated soil sample
----CPA-SB15 (11-12)Unsaturated soil sample
----CPA-SB15 (14-15)Unsaturated soil sample
----CPA-SB15 (17-18)Unsaturated soil sample
----CPA-SB16 (2-3)Unsaturated soil sample (water table <20 feet bgs)
----CPA-SB16 (5-6)Unsaturated soil sample
----CPA-SB16 (8-9)Unsaturated soil sample
----CPA-SB16 (11-12)Unsaturated soil sample
----CPA-SB16 (14-15)Unsaturated soil sample
----CPA-SB16 (17-18)Unsaturated soil sample
----CPA-SB17 (2-3)Unsaturated soil sample (water table <20 feet bgs)
----CPA-SB17 (5-6)Unsaturated soil sample
----CPA-SB17 (8-9)Unsaturated soil sample
----CPA-SB17 (11-12)Unsaturated soil sample
----CPA-SB17 (14-15)Unsaturated soil sample
----CPA-SB17 (17-18)Unsaturated soil sample
Prepared by: VTV Checked by: KLS
Notes:
bgs = below ground surface
~ = Approximately
SynTerra recommends rotosonic or hollow-stem auger drilling methods for boring and well installation.
Continuous cores from GeoProbe drilling provide sufficient material for soil sampling and lithologic description.
Estimated well and soil sample depths based on data from the AW-2S, CW-1, CCR-105 and CCR-106 well clusters.
Number of soil samples shown 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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TABLE 3
GROUNDWATER ANALYTICAL METHODS
W.H. WEATHERSPOON POWER PLANT
DUKE ENERGY PROGRESS, LLC, LUMBERTON, NC
PARAMETER RL UNITS METHOD
pH NA SU Field Water Quality Meter
Specific Conductance NA µS/cm Field Water Quality Meter
Temperature NA ºC Field Water Quality Meter
Dissolved Oxygen NA mg/L Field Water Quality Meter
Oxidation Reduction Potential NA mV Field Water Quality Meter
Turbidity NA NTU Field Water Quality Meter
Ferrous Iron NA mg/L Field Test Kit
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 6020A
Barium 0.005 mg/L EPA 200.7 or 6010C
Beryllium 0.001 mg/L EPA 200.8 or 6020A
Boron 0.05 mg/L EPA 200.7 or 6010C
Cadmium 0.001 mg/L EPA 200.8 or 6020A
Chromium 0.001 mg/L EPA 200.8 or 6010C
Cobalt 0.001 mg/L EPA 200.8 or 6020A
Copper 0.001 mg/L EPA 200.8 or 6020B
Iron 0.01 mg/L EPA 200.7 or 6010C
Lead 0.001 mg/L EPA 200.8 or 6020A
Manganese 0.005 mg/L EPA 200.7 or 6010C
Mercury (low level)0.005 ng/L 1631 ONLY
Molybdenum 0.001 mg/L EPA 200.8 or 6020B
Nickel 0.001 mg/L EPA 200.8 or 6020B
Phosphorus 0.005 mg/L EPA 365.1
Selenium 0.001 mg/L EPA 200.8 or 6020A
Strontium 0.005 mg/L EPA 200.7 or 6010C
Thallium (low level)0.0002 mg/L EPA 200.8 or 6020A
Vanadium (low level)0.0003 mg/L EPA 200.8 or 6020A
Zinc 0.005 mg/L EPA 200.7 or 6010C
Alkalinity (as CaCO3)5 mg/L SM 2320B
Bicarbonate 5 mg/L SM 2320
Calcium 0.01 mg/L EPA 200.7
Carbonate 5 mg/L SM 2320
Chloride 0.1 mg/L EPA 300.0 or 9056A
Magnesium 0.005 mg/L EPA 200.7
Methane 0.01 mg/L RSK 175
Nitrate as Nitrogen 0.01 mg-N/L EPA 353.2
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 SM4500S2-D
Total Dissolved Solids 25 mg/L SM 2540C
Total Organic Carbon 0.1 mg/L SM 5310C/EPA9060A
Total Suspended Solids 2.5 mg/L SM 2450D
Prepared by: RBI Checked by: SRW/TCP/VTV
Notes:
ºC - Degrees Celsius
µS/cm = micro-Siemens per centimeter
mg/L - Milligrams per liter
mg - N/L - Milligrams nitrogen per liter
mV - Millivolts
NA - Not analyzed
NTU - Nephelometric turbidity unit
pCi/L - picocuries per liter
RL = reporting limit
S.U. - Standard Unit
ug/mL - micrograms per milliliter
2.Analytical methods and reporting limits as presented were applicable at time of CSA field implementation in 2015.Analytical methods and reporting limits are updated periodically and
applied as appropriate.
INORGANICS
FIELD PARAMETERS
1. Select constituents will be analyzed for total and dissolved concentrations.
ANIONS/CATIONS
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12/18/2017 3:35 PMP:\Duke Energy Progress.1026\09.WEATHERSPOON PLANT\09.COAL PILE ASSESSMENT\DWG\DE WEATHERSPOON CPA BASE MAP 2017-12-18.dwg148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.comPROJECT MANAGER:LAYOUT:DRAWN BY:TED VOLSKAYDATE:JOHN CHASTAINFIG 1 (PROP MW & SB LOC MAP)12/18/2017FORMER SMOKE STACKFIGURE 1PROPOSED MONITORING WELL & SOILBORING LOCATION MAPW.H. WEATHERSPOON POWER PLANT491 POWER PLANT RDLUMBERTON, NORTH CAROLINACSA MONITORING WELL (SURVEYED)MONITORING WELL (APPROXIMATE)LEGENDMW-3AW-2SAW-2DAW-2I50050100GRAPHIC SCALEIN FEETMW-53IMW-53DMW-5MW-4MW-3MW-1CW-01CW-01COMPLIANCE MONITORING WELL (SURVEYED)SOURCES:OCTOBER 26, 2016 AERIAL PHOTOGRAPH OBTAINED FROM GOOGLE EARTH PROEXTENT OF COAL STOCKPILE (COMPOSITE)COAL STOCKPILE ASSESSMENT AREAMW-2AW-2DRW-05RW-06RW-03RW-02RW-04RW-01RW-00RW-06FUEL OIL RECOVERY WELL (APPROXIMATE)NO. 2 FUEL OIL AST500,000 GALRETIRED COAL PLANTC
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