NC0038377_CSA Tables_20171101

TABLE 2-1WELL CONSTRUCTION DATAMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLC, ROXBORO, NCIDENTIFICATION PROGRAMDATE INSTALLEDDATE ABANDONEDMONITORING ZONEMATERIALDIAMETER (INCHES)NORTHING (FEET)EASTING (FEET)MEASURING POINT TOC ELEVATION (Feet- MSL)GROUND SURFACE ELEVATION (FEET- MSL)BORING DEPTH2,3 (FEET BGS)SURFACE CASING DEPTH3 (FEET BGS)TOTAL WELL DEPTH2,3 (FEET BGS)MEASURED WELL DEPTH1 (FEET TOC)TOP OF SCREEN ELEVATION (FEET-MSL)BOTTOM OF SCREEN ELEVATION (FEET-MSL)Ash BasinABMW-01 CAMA 6/2/2015 NA Ash PVC 2.00 1012988.38 2029253.96 483.81 481.11 13.3 NA 13.3 15.65 2.813.3478.66 468.16ABMW-02 CAMA 5/31/2015 NA Ash PVC 2.00 1012778.26 2030477.81 493.90 490.68 41.5 NA 39.2 42.4834.0 39.2456.62 451.42ABMW-02BR CAMA 6/3/2015 NA Bedrock PVC 2.00 1012781.97 2030476.42 493.85 490.65 130.0 0-41.0 106.0 107.6494.0 104.0396.21 386.21ABMW-02BRL CAMA/DATA GAP 1/12/2016 NA Bedrock PVC 2.00 1012774.00 2030465.00 493.97 491.05 180.0 0-120.0 165.0 168.57 155.0165.0335.40 325.40ABMW-03 CAMA 5/20/2015 NA Ash PVC 2.00 1012714.21 2030856.72 500.17 497.34 40.5 NA 40.5 43.50 35.340.5461.87 456.67ABMW-03S CAMA 5/27/2015 NA Saprolite PVC 2.00 1012718.52 2030858.24 500.30 497.33 68.0 0-43.0 61.0 63.16 50.060.0447.14 437.14ABMW-04 CAMA 5/31/2015 NA Ash PVC 2.00 1012345.36 2030478.85 491.44 488.76 60.0 NA 53.2 56.20 48.053.2440.44 435.24ABMW-04D CAMA 5/31/2015 NA Transition Zone PVC 2.00 1012350.06 2030467.97 491.50 488.68 64.5 0-54.5 64.5 65.75 55.861.0430.95 425.75ABMW-04BR CAMA 6/4/2015 NA Bedrock PVC 2.00 1012348.07 2030473.02 491.61 488.62 108.5 0-60.0 108.5 111.50 98.7108.2389.61 380.11CSA WellsMW-03BR CAMA 2/10/2015 NA Bedrock PVC 2.00 1015654.79 2031277.75 438.24 435.53 77.0 NA 75.1 76.35 68.874.0367.12 361.89MW-05BR CAMA 1/30/2015 NA Bedrock PVC 2.00 1015146.30 2029179.66 511.40 508.74 67.0 NA 65.0 65.72 58.063.0450.68 445.68MW-06BR (piezometer) CAMA 4/13/2015 NA Bedrock PVC 2.00 1014756.09 2033040.31 463.99 461.70 100.0 NA 100.0 100.31 90.0100.0373.68 363.68MW-07D CAMA 4/25/2015 6/12/2017 Transition Zone PVC 2.00 1014307.45 2034169.17 453.94 451.17 32.5 NA 32.5 32.70 19.530.5432.24 421.24MW-07BR CAMA 4/24/2015 6/12/2017 Bedrock PVC 2.00 1014311.86 2034175.46 453.50 451.21 77.5 NA 77.5 79.60 66.877.5384.60 373.90MW-08S (piezometer) CAMA 2/16/2015 NA Saprolite PVC 2.00 1014446.92 2034603.67 466.87 466.94 30.1 NA 30.1 30.20 25.030.0441.67 436.67MW-08D (piezometer) CAMA 2/16/2015 NA Transition Zone PVC 2.00 1014443.85 2034599.43 466.89 467.04 41.0 NA 41.0 38.30 33.338.5433.79 428.59MW-08BR CAMA 2/14/2015 NA Bedrock PVC 2.00 1014440.25 2034593.99 466.99 467.27 86.5 0-46.5 67.7 67.05 61.867.0405.14 399.94MW-09BR (piezometer) CAMA 4/11/2015 NA Bedrock PVC 2.00 1013360.32 2033864.48 495.39 492.85 66.0 NA 61.0 60.63 48.058.0444.76 434.76MW-09BRL CAMA/REPLACEMENT 2/28/2017 NA Bedrock PVC 2.00 1013345.71 2033841.83 498.56 495.84 158.5 NA 70.3 73.44 60.570.3435.00 425.12MW-10BR CAMA/BKGRD 2/25/2015 NA Bedrock PVC 2.00 1011436.41 2032770.90 513.39 513.47 65.5 NA 65.5 57.60 48.058.0465.79 455.79MW-11BR (piezometer) CAMA/BKGRD 4/24/2015 NA Bedrock PVC 2.00 1010083.75 2027499.40 527.36 524.34 95.0 NA 95.0 98.80 84.394.4438.66 428.56MW-12S CAMA/BKGRD/CCR 4/29/2015 NA Saprolite PVC 2.00 1008653.91 2029202.47 587.38 587.48 56.0 NA 51.0 50.40 39.549.5546.98 536.98MW-12D CAMA/BKGRD/CCR 4/28/2015 NA Transition Zone PVC 2.00 1008654.13 2029191.43 588.02 588.17 97.0 NA 97.0 96.55 87.097.0501.47 491.47MW-13BR CAMA/BKGRD 4/15/2015 NA Bedrock PVC 2.00 1013587.37 2027633.00 528.83 526.67 107.0 NA 100.0 100.71 88.898.7438.02 428.12MW-14BR CAMA/BKGRD 2/5/2015 NA Bedrock PVC 2.00 1015432.97 2028964.70 520.75 517.76 46.4 NA 35.4 36.87 29.034.0488.88 483.88MW-15BR (piezometer) CAMA 5/12/2015 NA Bedrock PVC 2.00 1016021.83 2031813.20 460.92 460.94 78.5 NA 64.0 62.64 53.063.0408.28 398.28MW-16S CAMA 5/8/2015 NA Alluvium PVC 2.00 1015654.53 2032640.89 371.11 367.94 8.5 NA 8.5 10.59 4.97.6363.22 360.52MW-16D CAMA 5/8/2015 NA Transition Zone PVC 2.00 1015659.09 2032643.26 371.21 367.74 39.0 NA 39.0 41.44 28.738.9339.97 329.77MW-16BR CAMA 5/8/2015 NA Bedrock PVC 2.00 1015664.50 2032645.73 371.30 367.83 65.0 0-47.2 59.5 62.26 48.759.0319.34 309.04MW-17BR CAMA/DATA GAP 1/10/2016 NA Bedrock PVC 2.00 1013955.00 2033766.00 490.55 487.51 120.0 NA 120.0 123.50 108.0118.0377.05 367.05MW-18D CAMA/DATA GAP 11/3/2016 NA Transition Zone PVC 2.00 1012472.09 2032396.93 516.71 514.46 49.5 NA 48.8 51.89 38.548.8475.09 464.82MW-18BR CAMA/DATA GAP 11/8/2016 NA Bedrock PVC 2.00 1012468.45 2032399.87 516.78 514.45 129.5 59.50 111.0 113.69 96.0111.0418.09 403.09MW-19D CAMA/DATA GAP 11/4/2016 NA Transition Zone PVC 2.00 1012214.02 2032796.86 495.81 493.18 54.5 NA 54.1 57.03 43.554.1449.41 438.78MW-19BR CAMA/DATA GAP 11/7/2016 NA Bedrock PVC 2.00 1012206.73 2032793.93 495.94 493.51 94.0 74.50 94.0 97.18 84.094.0408.76 398.76Previously Installed WellsBG-1NPDES/CAMA/BKGRD/CCR10/15/2008 NA Bedrock PVC 2.00 1012000.52 2028480.40 540.11 537.04 UNK NA 52.0 55.20 42.052.0494.91 484.91BG-2NPDES/CAMA/BKGRD/CCR9/28/2010 NA Transition Zone PVC 2.00 1010809.99 2028799.48 542.66 539.84 53.0 NA 53.0 48.40 25.444.9513.76 494.26CW-1 NPDES 11/9/2010 NA Transition Zone PVC 2.00 1012696.54 2032714.46 489.88 486.96 25.5 NA 25.5 28.82 15.525.0470.56 461.06CW-1D NPDES 11/8/2010 NA Bedrock PVC 2.00 1012703.55 2032715.65 490.96 488.31 40.4 NA 40.4 43.65 30.139.9457.11 447.31CW-2 NPDES/CAMA 11/11/2010 NA Transition Zone PVC 2.00 1015043.98 2032238.71 389.00 386.56 18.0 NA 18.0 20.47 7.717.5378.33 368.53CW-2D NPDES/CAMA 11/11/2010 NA Bedrock PVC 2.00 1015046.88 2032245.02 389.53 386.93 55.9 NA 55.9 58.55 45.655.4340.78 330.98CW-3 NPDES 11/16/2010 NA Transition Zone PVC 2.00 1015647.59 2031278.02 437.68 435.27 32.3 NA 32.3 34.76 17.031.8417.72 402.92CW-4 NPDES 11/12/2010 NA Bedrock PVC 2.00 1015911.44 2030436.27 451.31 448.76 40.3 NA 40.0 42.81 35.039.8413.30 408.50CW-5 NPDES 11/15/2010 NA Bedrock PVC 2.00 1015162.23 2029182.29 509.60 507.21 43.0 NA 43.0 44.03 36.341.1470.37 465.57CW-6 NPDES 11/11/2010 NA Bedrock PVC 2.00 1014743.82 2033046.08 462.83 NM 77.4 NA 77.4 80.56 72.176.9387.07 382.27MW-2 CAMA/CCR 10/14/2008 NA Bedrock PVC 2.00 1015359.31 2030912.32 461.23 459.18 48.0 NA 48.0 50.12 38.048.0421.11 411.11MW-3 CAMA/CCR 10/14/2008 NA Alluvium PVC 2.00 1014955.04 2032010.00 384.00 NM 18.0 NA 18.0 19.93 8.018.0374.07 364.07MW-4 CAMA 10/15/2008 NA Bedrock PVC 2.00 1013846.48 2032346.28 522.77 519.46 55.0 NA 55.0 59.05 35.055.0483.72 463.72SCREENEDINTERVAL3(FEET BGS)P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\Tables\Table 2-1 Well Construction Data.xlsxPage 1 of 2
TABLE 2-1WELL CONSTRUCTION DATAMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLC, ROXBORO, NCIDENTIFICATION PROGRAMDATE INSTALLEDDATE ABANDONEDMONITORING ZONEMATERIALDIAMETER (INCHES)NORTHING (FEET)EASTING (FEET)MEASURING POINT TOC ELEVATION (Feet- MSL)GROUND SURFACE ELEVATION (FEET- MSL)BORING DEPTH2,3 (FEET BGS)SURFACE CASING DEPTH3 (FEET BGS)TOTAL WELL DEPTH2,3 (FEET BGS)MEASURED WELL DEPTH1 (FEET TOC)TOP OF SCREEN ELEVATION (FEET-MSL)BOTTOM OF SCREEN ELEVATION (FEET-MSL)SCREENEDINTERVAL3(FEET BGS)Previously Installed Piezometers P1 ASH BASIN DAM c. 1983 NA Earthen Dam PVC 2.00 1015210.58 2030732.42 475.86 473.43 UNK UNK UNK 51.22 UNK UNK UNK UNK P1A ASH BASIN DAM c. 1983 NA Earthen Dam PVC 2.00 1015207.52 2030735.62 475.00 473.38 UNK UNK UNK 36.40 UNK UNK UNK UNK P2 ASH BASIN DAM c. 1983 NA Earthen Dam PVC 2.00 1014965.67 2031226.56 458.65 455.77 UNK UNK UNK 49.66 UNK UNK UNK UNK P2A ASH BASIN DAM c. 1983 NA Earthen Dam PVC 2.00 1014968.75 2031221.26 458.62 456.17 UNK UNK UNK 18.66 UNK UNK UNK UNK P3 ASH BASIN DAM c. 1983 NA Earthen Dam PVC 2.00 1014648.01 2031793.01 446.99 443.69 UNK UNK UNK 67.84 UNK UNK UNK UNK P3A ASH BASIN DAM c. 1983 NA Earthen Dam PVC 2.00 1014650.72 2031787.93 445.69 443.39 UNK UNK UNK 51.34 UNK UNK UNK UNK P4 ASH BASIN DAM c. 1983 NA Earthen Dam PVC 2.00 1014521.83 2031950.40 454.57 452.59 UNK UNK UNK 64.15 UNK UNK UNK UNK P4A ASH BASIN DAM c. 1983 NA Earthen Dam PVC 2.00 1014524.33 2031947.13 454.99 452.70 UNK UNK UNK 36.17 UNKUNKUNK UNKPreviously Installed Production WellsDEP-1 (piezometer) CAMA c. 1980 NA Bedrock Steel 6.00 1008975.82 2031689.61 518.32 517.91 130.00 0-36 130.00 UNK NANANA NADEP-2 (piezometer) CAMA c. 1980 NA Bedrock Steel 6.00 1009275.47 2029241.25 562.58 562.01 238.00 0-21 238.00 UNK NANANA NADEP-3 (piezometer) CAMA c. 1980 NA Bedrock Steel 6.00 1009247.06 2029946.59 539.52 539.29 250.00 0-21 250.00 UNK NANANA NAStaff Gauges/Sample LocationSW-CB1 CAMA/DATA GAP 3/3/2016 NA Crutchfield Br Fiberglass 0.25 1015087.00 2032239.00 375.88 NA NA NA NA NA NA NA NA NASW-CBT1 CAMA/DATA GAP 3/3/2016 NA Trib to C'field Br Fiberglass 0.25 1014867.00 2033298.00 407.22 NA NA NA NA NA NA NA NA NASW-CB2 (no staff gauge) CAMA/DATA GAP (no staff gauge) NA Crutchfield Br NA NA pending pending NA NA NA NA NA NA NA NA NA NASW-REF1 CAMA/DATA GAP 3/3/2016 NA Background sw Fiberglass 0.25 1008502.11 2031771.53 486.00 NA NA NA NA NA NA NA NA NANotes:Prepared by: RKD Checked By: JAW1-Well depths measured by SynTerra, June 17, 2015NA - Not applicable PVC- Polyvinyl chloride2 - "Boring Depth" is the total depth of soil boring; "Total Well Depth" is the depth to the bottom of the filter pack MSL - Mean sea levelRM - Needs to be remeasured3 - Values measured during well installation NM - Not measuredUNK - Data not knownBGS - Below ground surface** Estimated until ground surface elevation is resurveyedP:\Duke Energy Progress.1026\105. Mayo Ash Basin GW Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\Tables\Table 2-1 Well Construction Data.xlsxPage 2 of 2
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TABLE 2-2
NPDES GROUNDWATER MONITORING REQUIREMENTS
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC, ROXBORO, NC

Well
Nomenclature Parameter Description Frequency
BG-1, BG-2,
CW-1, CW-1D,
CW-2, CW-2D,
CW-3, CW-4,
CW-5, CW-6
Alkalinity1 Calcium1 Manganese Strontium1
April, July,
and
November
Aluminum Carbonate1 Mercury Sulfate
Antimony Chloride Molybdenum1 Thallium
Arsenic Chromium Nickel TDS
Barium Cobalt1 Nitrate TSS1
Beryllium1 Copper pH Vanadium
Bicarbonate1 Iron Potassium1 Water
Level
Boron Lead Selenium Zinc
Cadmium Magnesium1 Sodium1
Prepared by: JAW Checked by: RKD
Notes:
1Constituent list adjusted in April 2015.

TABLE 3-1
ASH, ROCK, AND SOIL COMPOSITION
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC, ROXBORO, NC
Constituent (mg/kg) Fly Ash* Bottom Ash* Rock** Soil***
Aluminum 70,000 - 140,000 59,000 - 130,000 9,800 - 96,000 15,000 - 100,000
Calcium 7,400 - 150,00 5,700 - 150,000 6,000 - 83,000 1,500 - 62,000
Iron 34,000 - 130,000 40,000 - 160,000 8,800 - 95,000 7,000 - 50,000
Silicon 160,000 - 270,000 160,000 - 280,000 57,000 - 380,000 230,000 - 390,000
Magnesium 3,900 - 23,000 3,400 - 17,000 700 - 56,000 1,000 - 15,000
Potassium 6,200 - 21,000 4,600 - 18,000 4,000 - 45,000 4,500 - 25,000
Sodium 1,700 - 17,000 1,600 - 11,000 900 - 34,000 1,000 - 20,000
Sulfur 1,900 - 34,000 BDL - 15,000 200 - 42,000 840 - 1,500
Titanium 4,300 - 9,000 4,100 - 7,200 200 - 5,400 1,000 - 5,000
Antimony BDL - 16 All BDL 0.08 - 1.8 BDL - 1.3
Arsenic 22 - 260 2.6 - 21 0.50 - 14 2.0 - 12
Barium 380 - 5,100 380 - 3,600 67 - 1,400 200 - 1,000
Beryllium 2.2 - 26 0.21 - 14 0.10 - 4.4 BDL - 2.0
Boron 120 - 1,000 BDL - 335 0.2 - 220 BDL - 70
Cadmium BDL - 3.7 All BDL 0.5 - 3.6 BDL - 0.5
Chromium 27 - 300 51 - 1,100 1.9 - 310 15 - 100
Copper 62 - 220 39 - 120 10 - 120 5.0 - 50
Lead 21 - 230 8.1 - 53 3.8 - 44 BDL - 30
Manganese 91 - 700 85 - 890 175 - 1,400 100 - 1,000
Mercury 0.01 - 0.51 BDL - 0.07 0.1 - 2.0 0.02 - 0.19
Molybdenum 9.0 - 60 3.8 - 27 1.0 - 16 All BDL
Nickel 47 - 230 39 - 440 2.0 - 220 5.0 - 30
Selenium 1.8 - 18 BDL - 4.2 0.60 - 4.9 BDL - 0.75
Strontium 270 - 3,100 270 - 2,000 61 - 890 20 - 500
Thallium BDL - 45 All BDL 0.1 - 1.8 0.20 - 0.70
Uranium BDL - 19 BDL - 16 0.84 - 43 1.2 - 3.9
Vanadium BDL - 360 BDL - 250 19 - 330 20 - 150
Zinc 63 - 680 16 - 370 25 - 140 22 - 99
Notes:
BDL- Below Detection Limit
**Source for rock data is US Geological Survey National Geochemical database.⁷
mg/kg = miligram per kilogram
*Source for most fly ash data is EPRI CP-INFO Database³. Beryllium, Thallium, Mercury (bottom ash only) and Boron (bottom ash
only) are from the EPRI PISCES Database.⁶
***Source for most soils data is Shacklette and Boerngen (1984)⁸; Cadmium and Thallium data are from Smith et al (2005).⁹
Table was obtained from the EPRI Technical update - Coal Combustion Products-
Environmental Issue, Coal Ash: Characteristics, Management, and Environmental
Issues, Table 2, pg 5, EPRI, 2009.
P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\Tables\Table 3‐1  Ash, Rock, and Soil Composition.xlsx Page 1 of 1 
TABLE 3-2
PHYSICAL PROPERTIES OF ASH
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC, ROXBORO NC
From To
AB-01 39 40 37.3 1.6 59.5 35.3 3.6 2.234
ABMW-01 3.5 5 1.4 0.0 2.8 90.7 6.5 2.295
AB-02 24 25 41.6 0.5 60.4 37.3 1.8 2.154
AB-02BR * 14 15 6.8 7.1 49.8 33.2 9.9 2.785
AB-03 35 36 40.0 0.2 47.3 50.3 2.2 2.204
AB-04 23.5 25 27.4 0.0 18.5 72.8 8.7 2.204
Prepared by: EMB Checked by: KDF
Notes:
% = Percent
BGS = below ground surface
* = Transcription error on chain-of-custody. Sample as collected in field was designated "ABMW-02BR".
Clay
(%)
Specific
Gravity
Depth
(Feet BGS)Sample
Moisture
Content
(%)
Gravel
(%)
Sand
(%)
Silt
(%)
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Properties of Ash.xlsx Page 1 of 1
TABLE 3-3
MINERALOGY OF ASH
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC, ROXBORO NC
Sand Silt Clay Quartz Biotite Mullite
%%%%%%
ABMW-01 (3.5-5) 3.3 88.8 8.0 36.5 0.5 62.9
ABMW-02 (28-30) 15.4 79.1 5.5 20.9 ND 79.1
ABMW-04 (17-19) 25.5 68.0 6.5 25.5 ND 74.5
Prepared by: EMB Checked by: KDF
Notes:
%= percent
ND= not detected
1 Sample depth range in feet indicted in parentheses.
Sample ID1
Revised by: EMB
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TABLE 3-4WHOLE ROCK METAL OXIDE ANALYSIS OF ASHMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLC, ROXBORO, NCAl2O3BaO CaOCr2O3Fe2O3K2OMgO MnONa2OP2O5SiO2SrOTiO2V2O5LOISample ID 1%%%%%%%%%%%%%%%ABMW-01 (3.5-5.0) 29.77 0.09 2.72 0.03 5.49 0.77 1.12 0.02 0.30 0.18 57.73 0.14 1.15 0.05 3.86ABMW-02 (28.0-30.0) 36.94 0.06 1.05 0.04 3.75 0.65 0.95 0.01 0.17 0.03 59.04 0.06 1.14 0.07 2.60ABMW-04 (17.0-19.0) 33.68 0.06 0.78 0.03 4.00 0.82 0.93 0.02 0.17 0.07 58.06 0.06 1.11 0.05 2.71Notes:% = Percent< = concentration not detected at or above the reporting limit1 Sample depth range in feet indicted in parentheses. Rechecked by: EMBPrepared by: DMY Checked by: KDFP:\Duke Energy Progress.1026\105. Mayo Ash Basin GW Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\Tables\Table 3‐4 Whole Rock Metal Oxide Analysis of Ash.xlsx Page 1 of 1
TABLE 3-5WHOLE ROCK ELEMENTAL ANALYSIS OF ASHMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLC, ROXBORO, NCAs Cd Ce Co Cu Ga La Mo Ni Pb Sb Se Sn W Zn Zrmg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kgABMW-01 (3.5-5.0) 43 0.5 166 74 162 62 74 4 107 66 7 1 46 3 141 88ABMW-02 (28.0-30.0) 12 0.2 171 79 118 57 75 3 118 53 6 <1 36 3 113 68ABMW-04 (17.0-19.0) 10 <0.2 156 64 107 39 69 2 95 45 5 <1 45 2 71 95Notes:< = concentration not detected at or above the reporting limit1 Sample depth range in feet indicted in parentheses. Sample ID 1Prepared by: DMYChecked by: KDFRechecked by: EMBP:\Duke Energy Progress.1026\105. Mayo Ash Basin GW Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\Tables\Table 3-5 Whole Rock Elemental Analysis of Ash.xlsx Page 1 of 1
TABLE 6-1PHYSICAL PROPERTIES OF SOILMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLC, ROXBORO, NCWet Density Dry Density% Silt %ClayCoarse (19 - 75 mm)Fine (4.75 - 19 mm)Coarse (2 - 4.75 mm)Medium (0.425 - 2 mm)Fine (0.042 - 0.425 mm)Silt (0.005 - 0.075 mm)Clay (< 0.005 mm)%%% %(PCF)(PCF)(cm/sec)AB-01 39 40 Ash Grey silty fi.-med. SAND - - - - 0 1.6 7.5 18.3 33.7 35.3 3.6 - 37 32 2.234 37.3 - - -AB-02 24 25 Ash Grey silty fi.-med. SAND - - - - 0 0.5 7.2 19 34.2 37.3 1.8 - 40 34 2.154 41.6 - - -AB-02BR * 14 15 Ash Greyish brown silty fi.-co. SAND - - - - 0 7.1 8.3 14.2 27.3 33.2 9.9 - 32 28 2.785 6.8 - - -AB-03 35 36 Ash Grey fi.-med sandy SILT - - - - 0 0.2 2.6 10.7 34 50.3 2.2 - 41 33 2.204 40.0 - - -23.5 25 Ash Grey fi. Sandy SILT - - - - 0 0 1 3.9 13.6 72.8 8.7 - 44 28 2.204 27.4 - - -3.5 5 Ash Grey CLAY - - - - 0 0 0 0.5 2.3 90.7 6.5 - 44 22 2.295 1.4 - - -ABMW-02 56 57 Soil Grey fi. - med. Sandy CLAY 1.0 31.6 52.4 15.0 0 1 2.1 10.7 18.8 52.4 15 - 39 33 2.704 9.1 - - -3 4.9 Ash Grey silty fi. -co. SAND - - - - 0 9.6 16.2 32.7 27.8 13.3 0.4 54.5 32.5 25 2.674 16.3 76.4 65.8 7.90E-0440 42 Ash/Soil Brown & grey fi. Sandy CLAY - - - - 0 0 0 2.4 14.8 33.1 49.7 28.4 43 25.5 2.654 35.2 118.1 87.3 2.50E-08ABMW-04 39 41.5 - Grey & brown fi. -med sandy CLAY - - - - 0 0 0 17 24 38 21 26.4 42 31 2.624 28.2 121.8 95 6.60E-08MW-03BR 22 25 Rock Light brown silty fi.-co. SAND w/grvl - - - - 27.8 17.2 6.7 6.9 8.7 22.8 9.9 - 22 18 2.755 1.1 - - -MW-08BR 19 22 Soil Light brown silty fi.-med. SAND - - - - 0 3 6.5 17.1 34.3 33.8 5.3 - 37 32 2.735 10.6 - - -MW-09BR 44 46 SAP/Transition Dark Grey silty fi.-co. SAND w/grvl - - - - 14.8 13.4 7.6 14.3 4.3 29.8 5.8 - NA NA 2.765 9.9 - - -5 6.2 - Reddish brown fi. Sandy SILT - - - - 0 0 0 0.2 10.4 44.8 44.6 28 43 1.5 2.714 26.2 115 91.1 2.70E-0750 52.35 - Light grey fi. Sandy SILT - - - - 0 0 0 1 20.4 77.2 1.4 35.4 43.5 14 2.684 31.8 113.2 85.9 4.20E-05MW-13 2.5 4.75 - Grey & brown fi. Sandy SILT - - - - 0 0 0 9.2 22.6 45.9 22.3 25.7 42 7 2.654 28 121.9 95.3 1.10E-0617 27 Soil Light brown silty fi.-co. SAND - - - - 0 2.1 21.3 26.4 19.5 24.9 5.8 - 35 25 2.722 5.7 - - -52 54 Rock Brown silty fi.-co. SAND w/grvl - - - - 0 20.9 21 17 13 17.9 10.2 - 33 20 2.692 6.8 - - -MW-16 5 6.65 - Grey silty fi. - co. SAND - - - - 0 17.3 7.5 21.4 21.5 21.6 10.7 22.7 34 18 2.664 14.2 134 117.4 8.50E-0634 35 Rock Dark brown silty fi.-co. SAND - - - - 0 21.6 19 16.7 14 21.1 7.6 - 34 25 2.724 7.8 - - -4 5.5 Soil Light brown fi. Sandy CLAY - - - - 0 0 0 8.2 12.6 30.3 48.9 29.9 42.5 1 2.634 25.7 113.4 90.3 1.10E-067 8 Soil Light brown fi.-med sandy SILT - - - - 0 0 0 15.2 20.5 43.9 20.4 - 42 9 2.675 16.7 - - -14.5 18.5 - - 0.3 53.7 29.5 16.5 - - - - - - - - 42 13 2.645 14.6 - - -17.5 18.5 Soil Light brown clayey fi.-med. SAND - - - - 0 0.3 4.1 19.4 30.2 29.5 16.5 - 41 13 2.645 14.6 - - -SB-03 18.5 19.5 Soil Brownish grey fi. Sandy CLAY - - - - 0 1.8 1.8 5.4 18.1 32.9 40 - 43 2.5 2.625 25.5 - - -4 5 Rock Dk. Brown & lt. grey silty fi.-med. SAND - - - - 0 2.1 6.5 19.5 33.2 29.1 9.6 - 38 20 2.675 12.9 - - -6.5 7.5 Soil Light brown silty fi.-co. SAND - - - - 0 1.7 11.7 31.7 31.4 20.3 3.2 - 37.5 27 2.675 8.5 - - -12.4 13.4 Soil Lt. brown & grey silty fi.-co. SAND - - - - 0 1.5 12.8 28.4 29.6 24.5 3.2 - 37.5 28 2.685 8.7 - - -0.3 2.8 Soil Brown silty fi.-med SAND - - - - 0 2.6 6.1 23.9 29.6 27.3 10.5 21 36 17.5 2.674 16.5 125.5 107.7 1.00E-054.5 7.5 Soil Brown silty fi.-co. SAND w/grvl - - - - 11.3 18.8 12.1 22.8 19.5 8.8 6.7 - 26 28 2.695 11.7 - - -Prepared by: LWDChecked by: RKD* Transcription error on chain-of-custody. Sample as collected in field was designated "ABMW-02BR".^ Calculated using a textural classification triangle for unconsolidated materials (A.I. Johnson, 1967) and Specific Yield and Specific Retention from grain size data graph (S.G. Robinson).AB-04ABMW-01ABMW-03Classification Material DescriptionBorehole/ Sample IDDepth (ft)SB-04SB-05SB-07SB-01MW-12MW-13BRMW-16BRVertical Hydraulic Conductivity, K20°CGrain Size Grain Size% Gravel % SandDensityNatural Moisture Content%FinesSpecific Gravity% FinesTotal Porosity% Gravel% SandSpecific Yield ^Effective Porosity ^P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\Tables\Table 6-1 Soil Properties - Physical_2.xlsxPage 1 of 1
TABLE 6-2CHEMICAL PROPERTIES OF SOILMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLC, ROXBORO, NCAl2O3BaO CaOCr2O3Fe2O3K2OMgO MnONa2OP2O5SiO2SrOTiO2V2O5LOI AsCdCeCoCuGaLaMoNiPbSbSeSnWZn Zr%%%%%%%%%%%%%%%ppmppmppmppmppmppmppmppmppmppmppmppmppmppmppmppmABMW-01 3.5 5 Ash 29.77 0.09 2.72 0.03 5.49 0.77 1.12 0.02 0.30 0.18 57.73 0.14 1.15 0.05 3.86 43 0.5 166 74 162 62 74 4 107 66 7 1 46 3 141 88ABMW-02 28 30 Ash 36.94 0.06 1.05 0.04 3.75 0.65 0.95 0.01 0.17 0.03 59.04 0.06 1.14 0.07 2.60 12 0.2 171 79 118 57 75 3 118 53 6 <1 36 3 113 6857 59 Soil 16.52 0.01 8.18 0.02 13.42 0.71 5.15 0.16 0.73 0.17 49.70 0.06 1.11 0.05 4.04 2 0.3 23 40 86 13 5 <1 44 13 3 <1 32 <1 101 597 100 Rock 17.75 0.07 2.81 0.05 4.64 1.72 1.31 0.06 1.67 0.10 70.82 0.07 0.40 <0.01 1.51 2 <0.2 66 12 67 17 30 2 5 11 2 1 42 1 42 15ABMW-04 17 19 Ash 33.68 0.06 0.78 0.03 4.00 0.82 0.93 0.02 0.17 0.07 58.06 0.06 1.11 0.05 2.71 10 <0.2 156 64 107 39 69 2 95 45 5 <1 45 2 71 95ABMW-04BR 105 107 Rock 17.12 0.07 2.77 0.03 4.24 1.87 0.98 0.13 1.64 0.08 68.39 0.07 0.34 <0.01 1.71 2 0.5 58 6 4 15 26 1 4 14 2 2 35 <1 201 18MW-05BR 61 63 Rock 14.340.093.040.023.321.520.680.091.410.1439.120.040.31<0.012.21<1<0.2141010214714811<115217MW-07BR 22 24 Rock 15.92 0.10 1.92 <0.01 2.45 2.27 0.57 0.10 2.19 0.13 75.28 0.05 0.42 <0.01 0.95 101 <0.2 113 5 9 15 41 4 14 7 <1 1 1 <1 48 33MW-09BR 44 46 SAP/Transition 15.33 0.05 2.31 0.05 12.40 1.62 8.39 0.23 1.09 0.18 52.28 0.02 0.75 0.04 4.95 2 0.5 28 69 48 14 12 3 597 10 2 <1 <1 <1 369 17MW-10BR 51.5 53.5 Rock 13.30 0.081.07 0.02 2.81 1.52 0.180.06 1.53 0.09 37.39 0.010.27 <0.01 0.99 <1 <0.2 6 4 3 12 3 <1 2 9 <1 <1 9 <1 34 2330 32 Soil 12.820.071.73<0.013.221.360.720.041.550.1370.890.030.34<0.011.24<1<0.23871812181673<1<1<1391243 44 Rock 13.980.0411.43<0.0115.240.826.790.151.060.2447.260.081.050.101.6830.2455236611136696511<11201550 50.1 - 16.31 0.13 0.29 <0.01 3.53 1.69 1.02 0.06 0.44 0.12 71.35 0.02 0.54 <0.01 4.49 95 <0.2 79 6 64 15 50 6 18 13 1 <1 4 <1 79 15950 51.5 Soil 16.31 0.13 0.29 <0.01 3.53 1.69 1.02 0.06 0.44 0.1271.35 0.02 0.54 <0.01 4.49 95 <0.2 79 6 64 15 50 6 18 13 1 <1 4 <1 79 15988.5 90 Rock 12.74 0.10 0.79 0.069.54 2.58 4.89 0.27 0.570.08 63.23 0.02 0.63 0.043.88 96 0.4 56 34 22 13 15 6 153 11 <1 <1 1 <1 328 5417 27 Soil 13.48 0.04 9.74 <0.01 15.01 1.195.23 0.14 0.95 0.22 51.02 0.08 1.14 0.11 2.67 4 0 42 64 477 13 12 3 39 7 2 <1 <1 <1 125 1152 54 Rock 13.37 0.14 1.44 <0.01 5.34 1.44 1.13 0.11 1.50 0.2167.54 0.03 1.10 0.01 1.87 2 <0.25312501325 2 20 8 <1 2 1 <15216MW-14BR 40 41.5 Rock 13.910.083.180.033.191.520.700.051.460.1437.390.040.33<0.011.52<1<0.214875127367<1<1<1<11720MW-15BR 58 63 Rock 19.03 0.08 3.64 <0.01 5.05 1.51 1.23 0.07 1.64 0.12 67.68 0.08 0.42 <0.01 0.80 5 <0.2 94 9 13 12 28 1 7 12 <1 <1 <1 <1 35 17MW-16 54 55 - 17.45 0.05 3.89 <0.01 5.97 1.45 2.04 0.11 1.69 0.2260.19 0.05 0.50 <0.01 2.36 2 <0.2 88 13 25 12 27 4 29 12 1 <1 <1 <1 71 18SB-07 4.5 7.5 Soil 10.69 0.05 1.03 <0.01 3.50 1.03 0.45 0.11 1.31 0.03 78.53 0.03 0.20 <0.01 1.09 4 <0.2 67 6 10 8 15 2 9 15 <1 <1 <1 1 26 12Prepared by: LWDChecked by: RKDNotes:ft - feetppm - parts per millionMW-11BRMW-12BRMW-13BRABMW-02BRWHOLE ROCK ELEMENTAL ANALYSISBorehole/Sample IDDepth (ft) ClassificationWHOLE ROCK METAL OXIDE ANALYSISP:\Duke Energy Progress.1026\105. Mayo Ash Basin GW Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\Tables\Table 6-2 Chemical Props of Soils.xlsxPage 1 of 1
TABLE 6-3
SOIL, SEDIMENT, AND ASH ANALYTICAL METHODS
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC, ROXBORO, 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
Sediment Specific Samples
Cation exchange capacity meg/100g LONR 29-B
Particle size distribution %
Percent solids %
Percent organic matter % EPA/600/R-02/069
Redox potential mV
Faulkner et al. 1898;
HACH Method 10228
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. Ash samples to be analyzed for Total Inorganics using USEPA Methods 6010/6020 and pH using USEPA Method 9045; select ash
samples will also be analyzed for leaching potential using SPLP Extraction Method 1312 in conjunction with USEPA Methods 6010/6020.
Prepared by: RBI Checked by: TCP
Revised by: EMB Rechecked by: JAW
3. 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.
P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\Tables\
Table 6-3 Soil, Sediment and Ash Analytical Methods.xlsx Page 1 of 1
TABLE 6-4
ASH PORE WATER, GROUNDWATER, SURFACE WATER, AND AREA OF WETNESS
ANALYTICAL METHODS
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC, ROXBORO NC
Parameter Reporting Limits 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)0.5 ng/L EPA 1631
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 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
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 Isotopeug/mL SW846 3010A/6020A
Alkalinity (as CaCO3)5mg/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 0.023 mg-N/L
EPA 300.0 or 9056A or 353.2 (RL
0.01 mgN/L)
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 0.01 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
Arsenic Speciation Vendor Specific mg/L IC-ICP-CRC-MS
Iron Speciation Vendor Specific mg/L IC-ICP-CRC-MS
Manganese Speciation Vendor Specific mg/L IC-ICP-CRC-MS
Prepared by: RBI Checked by: TCP
Revised by: EMB Rechecked by: JAW
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.
1. Select constituents will be analyzed for total and dissolved concentrations.
NA indicates not applicable.
Notes:
INORGANICS
FIELD PARAMETERS
ADDITIONAL GROUNDWATER CONSTITUENTS
ANIONS/CATIONS
RADIONUCLIDES
P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\Tables\Table 6-4 Analytical Method - Aqueous.xlsx Page 1 of 1
TABLE 6-5HISTORIC WATER LEVEL DATAMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLC, ROXBORO, NCWell 6/17/2015 12/3/2015 12/4/2015 1/5/2016 1/6/2016 1/7/2016 1/8/2016 1/26/2016 6/23/2016 6/24/2016 11/2/2016 11/3/2016 6/19/2017 6/20/2017ABMW-1 477.93 481.23 --- --- --- 481.25 --- --- 479.69 --- --- --- 480.20 --- 2.8 13.3 AshABMW-2 481.56 483.07 --- 483.15 --- --- --- --- 482.98 --- 482.79 --- 482.90 --- 34.0 39.2 AshABMW-2BR 482.75 482.59 --- 482.99 --- --- --- --- 482.91 --- 482.50 --- 482.68 --- 94.0 104.0 BedrockABMW-2BRL482.51 482.51 --- 482.14 --- 482.36 --- 155.0 165.0 BedrockABMW-3 483.02 483.21 --- 483.55 --- --- --- --- 483.12 --- 482.84 --- 482.88 --- 35.3 40.5 AshABMW-3S 483.04 483.12 --- 483.35 --- --- --- --- 483.14 --- 482.80 --- 482.92 --- 50.0 60.0 SaproliteABMW-4 485.11 485.31 --- 485.47 --- --- --- --- 485.01 --- 484.51 --- 484.72 --- 48.0 53.2 AshABMW-4BR 483.42 485.46 --- 486.18 --- --- --- --- 485.19 --- 484.80 --- 484.98 --- 98.7 108.2 BedrockABMW-4D 485.06 485.24 --- 485.40 --- --- --- --- 484.98 --- 484.47 --- 484.69 --- 55.8 61.0 Transition ZoneBG-1 510.26 509.81 --- --- --- --- 510.75 --- 512.09 --- 510.48 --- 510.47 --- 42.0 52.0 BedrockBG-2 511.16 510.78 --- --- --- --- 511.43 --- 512.55 --- 512.11 --- 511.31 --- 25.4 44.9 Transition ZoneCW-1 472.20 471.83 --- --- --- --- --- --- 472.53 --- 471.54 --- 471.17 --- 15.5 25.0 Transition ZoneCW-1D 471.93 471.60 --- --- --- --- --- --- 472.24 --- 471.41 --- 471.01 --- 30.1 39.9 BedrockCW-2 375.29 376.65 --- --- 376.61 --- --- --- 375.47 --- --- 375.08 374.98 --- 7.7 17.5 Transition ZoneCW-2D 375.29 376.75 --- --- 376.74 --- --- --- 375.56 --- --- 373.57 373.44 --- 45.6 55.4 BedrockCW-3 421.88 420.48 --- --- --- --- --- --- 422.91 --- 420.62 --- --- 420.34 17.0 31.8 Transition ZoneCW-4 427.70 428.96 --- --- --- --- --- --- --- 430.48 429.21 --- --- 429.31 35.0 39.8 BedrockCW-5 501.53 501.82 --- --- --- --- --- --- 505.03 --- 499.68 501.16 --- 36.3 41.1 BedrockCW-6 450.81 448.99 --- --- 450.33 --- --- --- 452.27 --- --- 449.13 450.07 --- 72.1 76.9 BedrockDEP-1 (Piezometer) --- --- --- --- --- --- --- --- --- --- 504.95 --- --- 504.86 NA NA BedrockDEP-2 (Piezometer) --- --- --- --- --- --- --- --- --- --- 546.34 --- --- 546.79 NA NA BedrockDEP-3 (Piezometer) --- --- --- --- --- --- --- --- --- --- 517.58 --- --- 518.52 NA NA BedrockMW-2 435.11 434.12 --- --- 435.08 --- --- --- 435.64 --- 434.05 --- 434.45 --- 38.0 48.0 BedrockMW-3 377.32 377.59 --- --- 377.57 --- --- --- 377.40 --- 377.36 --- 377.31 --- 8.0 18.0 AlluviumMW-3BR 420.32 421.10 --- --- --- 421.94 --- --- --- 423.59 421.46 --- --- 420.94 68.8 74.0 BedrockMW-4 496.61 494.54 --- --- 496.57 --- --- --- 495.33 --- 492.14 --- 491.98 --- 35.0 55.0 BedrockMW-5BR 501.94 501.78 --- --- 504.47 --- --- --- --- 505.55 500.25 --- 501.17 --- 58.0 63.0 BedrockMW-6BR (Piezometer) 407.15 450.10 --- --- --- --- --- --- 453.01 --- --- 450.79 450.26 --- 90.0 100.0 BedrockMW-7BR 445.94 443.78 --- --- 445.11 --- --- --- 447.80 --- 444.59 --- 66.8 77.5 BedrockMW-7D 444.46 442.58 --- --- 444.08 --- --- --- 446.22 --- 442.55 --- 19.5 30.5 Transition ZoneMW-8BR 432.54 430.93 --- --- 431.01 --- --- --- 433.17 --- 431.38 --- 431.23 --- 61.8 67.0 BedrockMW-8D (Piezometer) 433.53 432.29 --- --- --- --- --- --- 433.97 --- 432.84 --- 431.70 --- 33.3 38.5 Transition ZoneMW-8S (Piezometer) 437.02 437.01 --- --- --- --- --- --- 437.03 --- 437.01 --- 437.02 --- 25.0 30.0 SaproliteMW-9BR 470.42 468.82 --- --- 472.75 --- --- --- 472.88 --- 466.47 --- 465.15 --- 48.0 58.0 BedrockMW-9BRL466.01 --- 60.5 70.3 BedrockMW-10BR 499.57 500.09 --- --- --- 500.31 --- --- 501.37 --- 500.09 --- --- 499.95 48.0 58.0 BedrockMW-11BR 488.05 490.66 --- --- --- 491.18 --- --- ---492.41490.42 --- --- 491.27 84.3 94.4 BedrockMW-12D 556.90 555.52 --- --- --- 556.07 --- --- 558.78 --- 556.58 --- --- 556.81 87.0 97.0 Transition ZoneMW-12S 556.60 555.23 --- --- --- 555.69 --- --- 558.52 --- 556.25 --- --- 556.54 39.5 49.5 SaproliteMW-13BR 495.47 497.28 --- --- --- 498.47 --- --- --- 500.13 499.28 --- --- 499.69 88.8 98.7 BedrockMW-14BR 504.61 503.88 --- --- --- 504.44 --- --- --- 505.26 503.20 --- 503.12 --- 29.0 34.0 BedrockMW-15BR (Piezometer) 402.68 --- 406.52 --- --- --- --- --- 409.01 --- --- 405.57 --- 405.04 53.0 63.0 BedrockMW-16BR 365.41 --- 367.84 --- --- 368.01 --- --- 367.75 --- --- 367.47 --- 365.36 48.7 59.0 BedrockMW-16D 365.52 --- 367.95 --- --- 368.17 --- --- 367.85 --- --- 367.67 --- 365.72 28.7 38.9 Transition ZoneMW-16S 366.92 --- 367.77 --- --- 367.86 --- --- 367.48 --- --- 367.59 --- 367.28 4.9 7.6 AlluviumMW-17BR (Piezometer)455.33 458.69 --- 455.84 --- 455.51 --- 108.0 118.0 BedrockMW-18D492.96 --- 38.5 48.8 Transition ZoneMW-18BR496.71 --- 96.0 111.0 BedrockMW-19D487.59 --- 43.5 54.1 Transition ZoneMW-19BR486.31 --- 84.0 94.0 BedrockPZ-1 443.77 --- --- --- --- --- --- --- --- --- 442.08 --- 442.591 --- UNK UNK Earthen DamPZ-1A 439.81 --- --- --- --- --- --- --- --- --- DRY --- 437.034 --- UNK UNK Earthen DamPZ-2 413.69 --- --- --- --- --- --- --- --- --- 412.13 --- 412.687 --- UNK UNK Earthen DamPZ-2A DRY --- --- --- --- --- --- --- --- --- DRY --- DRY --- UNK UNK Earthen DamPZ-3 394.41 --- --- --- --- --- --- --- --- --- 393.49 --- 394.015 --- UNK UNK Earthen DamPZ-3A 394.86 --- --- --- --- --- --- --- --- --- 393.17 --- 393.659 --- UNK UNK Earthen DamPZ-4 417.02 --- --- --- --- --- --- --- --- --- 419.58 --- 414.663 --- UNK UNK Earthen DamPZ-4A 418.84 --- --- --- --- --- --- --- --- --- DRY --- DRY --- UNK UNK Earthen DamNotes:Prepared by: LWD Checked by: RKDNA - Not applicableUNK - Data not knownMSL - Mean sea levelBGS - Below ground surfaceScreened Interval(Feet, BGS)Monitoring ZoneWater Level (Feet, MSL)Not InstalledNot InstalledNot InstalledNot InstalledAbandonedAbandonedNot InstalledNot InstalledNot InstalledP:\Duke Energy Progress.1026\105. Mayo Ash Basin GW Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\Tables\Table 6-5 Historical Water Level .xlsxPage 1 of 1
TABLE 6-6
HORIZONTAL GROUNDWATER GRADIENTS AND FLOW VELOCITIES
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC, ROXBORO, NC
Direction Data Points
Gradient
(ft per ft)
Velocity
(ft per yr)
NE MW-12S to ABMW-03S 0.017 14.48
NE ABMW-03S to MW-16S 0.034 23.33
NE MW-12D to ABMW-04D 0.018 25.45
NE ABMW-04D to MW-16D 0.030 21.19
Prepared by: EK Checked by: RKD
Note:
ft = feet
yr = year
Water level measurements used for these calculations were collected on June 19-20, 2017
Ash Basin Groundwater Gradients
Saprolite
Transition Zone
P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW Assessment Plan\CSA_UPDATE_2017\CSA Sup
2\Tables\Table 6-6 Horizontal GW Gradients Flow Velocities.xlsx Page 1 of 1
TABLE 6-7
VERTICAL HYDRAULIC GRADIENTS
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC, ROXBORO, NC
Well ID
Vertical
Gradient
(ft per ft)
Flow Direction
ABMW-02 to AMBW-02BR 3.46E-03 Down
ABMW-02BR to ABMW-02BRL 5.22E-03 Down
ABMW-03 to ABMW-03S -2.45E-03 Up
ABMW-04 to ABMW-04BR -4.83E-03 Up
CW-1 to CW-1D 1.19E-02 Down
CW-2 to CW-2D 4.08E-02 Down
CW-3 to MW-03BR -1.28E-02 Up
CW-5 to MW-05BR -4.93E-04 Up
MW-08S to MW-08BR 2.69E-01 Down
MW-12S to MW-12D -5.79E-03 Up
MW-16S to MW-16BR 4.03E-02 Down
MW18D to MW-18BR -6.32E-02 Up
MW-19D to MW-19BR 3.17E-02 Down
Prepare by: ENK Checked by: RKD
Notes:
ft= feet
Vertical gradient calculations based on June 19-20, 2017 water level data collected within 24 hours
P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW Assessment Plan\CSA_UPDATE_2017\CSA Sup
2\Tables\Table 6-7 Vertical Hydraulic Gradients.xlsx Page 1 of 1
TABLE 6-8
IN-SITU HYDRAULIC CONDUCTIVITY RESULTS
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC, ROXBORO, NC
Measured Geometric
Mean Measured Geometric
Mean
PK-SI Test 1 4.97E-04 1.41E+00
PK-SO Test 1 1.92E-04 5.43E-01
ABMW-04BR Slug-Out Test 1 3.34E-06 -- 9.46E-03 --
Test 1 3.20E-05 9.07E-02
Test 2 3.03E-05 8.58E-02
Slug Out Test 1 1.16E-05 3.29E-02
Test 1 5.89E-05 1.67E-01
Test 2 4.89E-05 1.39E-01
Test 1 3.52E-05 9.98E-02
Test 2 3.82E-05 1.08E-01
MW-06BR
MW-07BR PK-SI Test 1 6.10E-04 -- 1.73E+00 --
Slug In Test 1 4.21E-05 1.19E-01
Slug In Test 2 2.05E-05 5.82E-02
Slug Out Test 1 2.81E-05 7.95E-02
Slug Out Test 2 3.33E-05 9.44E-02
MW-09BR Slug-Out Test 1 7.91E-06 -- 2.24E-02 --
MW-10BR Slug-Out Test 1 3.12E-06 -- 8.84E-03 --
PK-SI Test 1 1.98E-03 5.62E+00
PK-SI Test 2 1.22E-03 3.46E+00
PK-SO Test 1 1.90E-03 5.37E+00
PK-SO Test 2 1.99E-03 5.66E+00
MW-13BR PK-SI Test 1 5.71E-04 -- 1.62E+00 --
Test 1 1.55E-05 4.39E-02
Test 2 1.04E-05 2.94E-02
PK-SI Test 1 1.62E-04 4.59E-01
PK-SO Test 1 2.03E-04 5.76E-01
MW-16BR Slug-Out Test 1 1.12E-06 -- 3.17E-03 --
ABMW-2BRL Slug Out Test 1 4.18E-06 -- 1.19E-02 --
MW-9BRL Slug Out Test 1 1.32E-05 -- 3.73E-02 --
MW-18BR Slug Out Test 1 5.08E-06 -- 1.44E-02 --
MW-19BR Slug Out Test 1 1.32E-05 -- 3.73E-02 --
6.66E-05 1.89E-01
1.99E-03 5.66E+00
1.59E-07 4.51E-04
Measured Geometric
Mean Measured Geometric
Mean
ABMW-01 Slug Out Test 2 1.45E-03 -- 4.12E+00 --
ABMW-02 Slug Out Test 1 1.69E-05 -- 4.79E-02 --
ABMW-03 Slug-Out Test 1 4.16E-05 -- 1.18E-01 --
Slug Out Test 1 1.73E-04 4.91E-01
Slug Out Test 2 2.04E-04 5.80E-01
1.29E-04 3.67E-01
1.45E-03 4.12E+00
1.69E-05 4.79E-02
MW-15BR 1.81E-04 5.14E-01
LOWEST CONDUCTIVITY
^GEOMETRIC MEAN
HIGHEST CONDUCTIVITY
LOWEST CONDUCTIVITY
Ash Basin
Well ID Slug
Test
Slug Test
Number
Hydraulic Conductivity
(cm/sec)
Hydraulic Conductivity
(ft/day)
ABMW-04 1.88E-04 5.34E-01
GEOMETRIC MEAN
HIGHEST CONDUCTIVITY
MW-08BR 3.00E-05 8.50E-02
MW-11BR 1.74E-03 4.93E+00
MW-14BR Slug In 1.27E-05 3.59E-02
Bedrock
Well ID Slug
Test
Slug Test
Number
Hydraulic Conductivity
(cm/sec)
Hydraulic Conductivity
(ft/day)
DRY
ABMW-02BR 3.09E-04 8.75E-01
MW-03BR Slug In 2.24E-05 6.35E-02
MW-05BR
Slug In
4.44E-05 1.26E-01
Slug Out
P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\Tables\
Table 6-8 Hydraulic Conductivity Data.xlsx
Page 1 of 2
TABLE 6-8
IN-SITU HYDRAULIC CONDUCTIVITY RESULTS
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC, ROXBORO, NC
Measured Geometric
Mean Measured Geometric
Mean
MW-16S Slug-Out Test 1 6.09E-06 -- 1.73E-02 --
-- --
-- --
-- --
Measured Geometric
Mean Measured Geometric
Mean
Slug Out Test 1 1.60E-04 4.54E-01
Slug Out Test 2 1.61E-04 4.55E-01
Slug Out Test 3 1.61E-04 4.56E-01
MW-08S
MW-12S Slug Out Test 1 7.80E-06 -- 2.21E-02 --
1.48E-04 4.19E-01
1.04E-03 2.94E+00
7.80E-06 2.21E-02
Measured Geometric
Mean Measured Geometric
Mean
ABMW-04D Slug Out Test 1 2.07E-05 -- 5.88E-02 --
MW-07D Slug Out Test 1 6.78E-06 -- 1.92E-02 --
MW-08D
MW-12D Slug Out Test 1 1.06E-03 -- 3.02E+00 --
Test 1 5.54E-04 1.57E+00
Test 2 6.86E-04 1.94E+00
Test 3 2.69E-04 7.63E-01
MW-18D Slug Out Test 1 5.62E-05 5.62E-05 1.59E-01 1.59E-01
MW-19D Slug Out Test 1 4.50E-05 4.50E-05 1.27E-01 1.27E-01
3.31E-04 9.39E-01
3.61E-02 1.02E+02
2.68E-06 7.58E-03
Prepared By: EB/HJF Checked By: JJ/HJF
Notes: Updated (8/30/17) by: HJF Rechecked by: EMB/DMY/RP (8/30/17)
Slug tests were analyzed using the Hvorslev mathmatical model, unless where indicated.
DRY - dry well
PK-SI - Packer Test, Slug-In
PK-SO - Packer Test, Slug Out
cm/sec - centimeter per second
ft/day - feet per day
-- No statistics necessary, only one slug test analyzed
^ - Geomean includes wells in other regulatory programs, not just the CAMA wells displayed
LOWEST CONDUCTIVITY
DRY
MW-16D Slug Out 4.68E-04 1.33E+00
^GEOMETRIC MEAN
HIGHEST CONDUCTIVITY
Alluvium
Well ID Slug
Test
Slug Test
Number
Hydraulic Conductivity
(cm/sec)
Hydraulic Conductivity
(ft/day)
HIGHEST CONDUCTIVITY
GEOMETRIC MEAN
HIGHEST CONDUCTIVITY
LOWEST CONDUCTIVITY
Saprolite
Well ID Slug
Test
Slug Test
Number
Hydraulic Conductivity
(cm/sec)
Hydraulic Conductivity
(ft/day)
ABMW-03S 1.61E-04 4.55E-01
DRY
^GEOMETRIC MEAN
LOWEST CONDUCTIVITY
Transition Zone
Well ID Slug
Test
Slug Test
Number
Hydraulic Conductivity
(cm/sec)
Hydraulic Conductivity
(ft/day)
P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\Tables\
Table 6-8 Hydraulic Conductivity Data.xlsx
Page 2 of 2
TABLE 6-9
VERTICAL HYDRAULIC CONDUCTIVITY OF UNDISTURBED SOIL SAMPLES
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC, ROXBORO, NC
From To
ABMW-02 39.0 41.5 6.6 x 10-8
Gray and brown fine
to medium sandy
clay
Residual saprolitic
schist directly below
ash
ABMW-03 40.0 42.0 2.5 x 10-8 Brown and gray fine
sandy clay
Residual soil directly
below ash
ABMW-03 3.0 4.9 7.9 x 10-4 Gray silty fine to
coarse sand
Representative bottom
ash
MW-12 5.0 6.2 2.7 x 10-7 Reddish brown fine
sandy silt
Background
soil/saprolite
upgradient of plant
MW-12 50.0 52.35 4.2 x 10-5 Light gray fine sandy
silt
Background saprolite/
representative
upgradient regolith
MW-13 2.5 4.75 1.1 x 10-6 Gray and brown fine
sandy silt
Residual soil
upgradient-west of ash
basin
MW-16 5.0 6.65 8.5 x 10-6 Gray silty fine to
coarse sand
Downgradient alluvium
in MW-16S screened
interval
SB-1 4.0 5.5 1.1 x 10-6 Light brown fine
sandy clay
Residual soil/saprolite
NW of ash basin
SB-7 0.3 2.8 1.0 X 10-5 Brown silty fine to
medium sand
Representative soil/fill
near toe of ash basin
dam
Prepared by: RBI Checked by: EMB
Water level measurements used for these calculations were collected on June 17, 2015.
cm/sec = centimeter per second
Comment
BGS = below ground surface
Sample ID
Depth
(feet BGS)
Hydraulic
Conductivity
(cm/sec)
Sediment Type
Notes:Revised by: EMB Rechecked by: JAW
P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\Tables\Table 6-9
Vertical Hydraulic Conductivity of Undisturbed Soil.xlsx Page 1 of 1
TABLE 7-1
PROVISIONAL BACKGROUND THRESHOLD VALUES FOR SOIL
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC, ROXBORO, NC
Parameter Reporting Unit
PSRG Protection of
Groundwater ^PBTV
pH* S.U. NE 5.2 - 7.6
Aluminum mg/kg NE 46746
Antimony mg/kg 0.9 0.67
Arsenic mg/kg 5.8 5.68
Barium mg/kg 580 373
Beryllium mg/kg 63 1.24
Boron mg/kg 45 13
Cadmium mg/kg 3 0.034
Calcium mg/kg NE 4309
Chloride mg/kg NE 26.3
Chromium (Total) mg/kg 3.8 77.4
Cobalt mg/kg 0.9 44.2
Copper mg/kg 700 97.5
Iron mg/kg 150 51501
Lead mg/kg 270 12.6
Magnesium mg/kg NE 26460
Manganese mg/kg 65 1856
Mercury mg/kg 1 0.1
Molybdenum mg/kg NE 4.5
Nickel mg/kg 130 36.5
Nitrate (as N) mg/kg NE 0.155
Potassium mg/kg NE 7368
Selenium mg/kg 2.1 2.86
Sodium mg/kg NE 1111
Strontium mg/kg NE 62.5
Sulfate mg/kg 250 13
Thallium mg/kg 0.28 0.406
Vanadium mg/kg 6 188
Zinc mg/kg 1200 132
Notes:
* - Upper and lower threshold values calculated for parameter
mg/kg - milligrams per kilogram
NE - Not Established
S.U. - Standard Unit
^ PSRG Protection of Groundwater - NCDEQ IHSB Preliminary Soil Remediation Goals Table - October 2016
Prepared by: JHG Checked by: SRW
P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\Tables\Table 7-1 Soil Provisional Background
Threshold Values_2.xlsx Page 1 of 1
TABLE 7-2SECONDARY SOIL EVALUATIONMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLC, ROXBORO, NCFACILITY NAME: MAYODATE UPDATED: 10/19/2017 Reporting Units mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kgSPREADSHEET UPDATED BY: BRANDON RUSSO PSRG Protection of Groundwater 0.9 5.8 580 63 45 3.8 0.9 150 65 NE 2.1 NE NE 0.28 6SPREADSHEET CHECKED BY: JERRY WYLIE Provisional Background Threshold Values 0.67 5.68 373 1.24 13 77.4 44.2 51501 1856 4.5 2.86 62.5 13 0.406 188Sample ID Associated BasinLocation With Repect to Groundwater Flow DirectionSample MediaDepth Interval (FEET BGS)Sample Collection DateAntimony Arsenic Barium Beryllium Boron Chromium Cobalt Iron Manganese Molybdenum Selenium Strontium Sulfate Thallium VanadiumAB-03 (41.7-42.5) Ash Basin Source Area Soil 41.7 - 42.5 03/18/2015 <3.511.283.2 3.1 32.9 54.7 17.7 3020 69.4 1.4 <3.583.7<332 <3.5 88.1ABMW-01 (13-13.5) Ash Basin Source Area Soil 13 - 13.5 06/02/2015 <6.2 <6.2 53.8 0.23 j <15.5 3.7 <6.2 8770 92.2 <3.1 <6.2 10.8 <316 <6.2 11.9ABMW-02BR (45-45.5) Ash Basin Source Area Soil 45 - 45.5 05/31/2015 <6 <6 92.2 0.44 <15 8 6 j 18300 579 <3 <6 23.2 <289 <6 30.3ABMW-02BR (57.5-58) Ash Basin Source Area Soil 57.5 - 58 05/31/2015 <5.1 <5.1 41.2 0.26 <12.8 56.7 37.4 43400 782 <2.6 <5.1 49.4 <263 <5.1 84.9ABMW-03S (51-53) Ash Basin Source Area Soil 51 - 53 05/20/2015 <6.8 <6.8 56.1 0.9 <17 1.3 j 6.6 j 16900 319 <3.4 <5.1 3.3 j <338 <6.8 28.8MW-3BR (0.8-1.2) Ash Basin Downgradient Soil 0.8 - 1.2 02/05/2015 <3 <3 57.6 0.34 j <3 11.3 5.4 8480 327 <6 <3 5.4 <299 <3 16MW-03BR (14.75-15) Ash Basin Downgradient Soil 14.75 - 15 02/05/2015 <2.5 <2.5 74.4 0.24 j <25.4 1.5 j 4.3 7750 468 <5.1 <2.5 9.6 <255 <2.5 7.6MW-03BR (17-18) Ash Basin Downgradient Soil 17 - 18 02/05/2015 <2.7 <2.7 74.5 0.16 j <2.7 <2.7 3.6 4450 459 <5.5 <2.7 10.7 <280 <2.7 4.4MW-15BR (0.5-1) Ash Basin Downgradient Soil 0.5 - 1 05/09/2015 <6.2 <6.2 64.6 0.24 j <15.5 10.4 3.9 j 15600 108 <3.1 <6.2 11.2 <305 <6.2 27.1MW-16BR (1-2) Ash Basin Downgradient Soil 1 - 2 04/25/2015 <6.5 <6.5 95.4 0.4 <16.2 7.6 6 j 7710 1250 <3.2 <6.5 3.2 j <333 <6.5 17.3MW-16BR (23-24) Ash Basin Downgradient Soil 23 - 24 04/26/2015 <5 <5 28.2 0.2 j 10 j 2.1 4.6 j 10600 885 <2.5 <5 23.3 <256 <5 8.4MW-16BR (33-35) Ash Basin Downgradient Soil 33 - 35 04/25/2015 <7.5 <7.5 131 0.36 j 16.8 j 9.2 12 19100 1630 2.9 j <7.5 37.5 <359 <7.5 16.3MW-16BR (54.5-55.5) Ash Basin Downgradient Soil 54.5 - 55.5 04/25/2015 <5.2 <5.2 237 0.4 32.3 37.2 19.6 38300 1010 <2.6 <5.2 40 <266 <5.2 87SB-05 (1-2) Ash Basin Source Area Soil 1 - 2 03/04/2015 <1.4 1.8 47.1 0.36 <17 <1.7 2.8 8280 406 <3.4 1.9 4.2 <346 <1.4 6.8SB-05 (2.3-3.3) Ash Basin Source Area Soil 2.3 - 3.3 03/04/2015 <1.1 1.1 40.9 0.35 <13.5 <1.4 1.7 6670 393 <2.7 1.2 5.2 <271 <1.1 5.9SB-05 (8-9) Ash Basin Source Area Soil 8 - 9 03/04/2015 <1.1 1 j 22.2 0.5 <13.7 <1.4 2.2 5790 195 0.36 j 0.87 j 3.1 <272 <1.1 4.8SB-06 (1-2) Ash Basin Source Area Soil 1 - 2 03/04/2015 <1.3 1.2 j 54.8 0.17 2.9 j 0.74 2.5 3920 192 <0.64 0.9 j 4.1 <309 <1.3 2.7SB-07 (1-2) Ash Basin Source Area Soil 1 - 2 05/07/2015 <5.8 <5.8 68.8 0.46 <14.5 11.4 5.9 9460 693 <2.9 <5.8 5.7 <286 <5.8 17.6SB-07 (4.5-7.5) Ash Basin Source Area Soil 4.5 - 7.5 05/07/2015 <6 <6 15.5 0.21 j <15 8.2 <6 6040 226 <3 <6 2.9 j <300 <6 8.2Prepared by: RKDChecked by: JAW< - concentration not detected at or above the adjusted reporting limit.mg/kg - Milligrams per kilogramNE - Not establishedj - Estimated concentration above the adjusted method detection limit and below the adjusted reporting limit.                        Bold highlighted concentration indicates exceedance of the Inactive Hazardous Sites Branch PSRG Table October 2016 for Protection of Groundwater                        Bold highlighted concentration indicates exceedance of Provisional Background Threshold ValueP:\Duke Energy Progress.1026\105. Mayo Ash Basin GW Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\Tables\Table 7-2 Secondary Source.xlsxPage 1 of 1
TABLE 10-1BACKGROUND GROUNDWATER RESULTS THROUGH APRIL 2017MAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLC, ROXBORO, NCpH Turbidity Alkalinity Aluminum Antimony Arsenic Barium Beryllium Bicarbonate Boron Cadmium Calcium Carbonate Chloride Chromium (VI) ChromiumCobalt Copper IronS.U. NTUs mg/L ug/L ug/L ug/L ug/L ug/L mg/L ug/L ug/L mg/L mg/L mg/L ug/L ug/L ug/L ug/L ug/L6.5-8.5 NE NE NE 1* 10 700 4* NE 700 2 NE NE 250 10 10 1* 1000 300Sample IDSampleCollection DateMW-12S 09/10/2015 5.8 6.31 13 98 <1 <1 19 <1 13 <50 <1 1.77 <10 3.1 --- 3.23 1.02 <1 108MW-12S12/02/20155.76.912164<1<116<112<50<11.56<103.30.0437.17<1<1336MW-12S 01/07/2016 5.8 9.89 11.1 220 <1 <1 11 <1 11.1 <50 <1 1.96 <5 3.1 0.038 1.43 <1 <1 178MW-12S 04/06/2016 5.8 7.42 10.2 566 <1 <1 12 <1 10.2 <50 <1 1.19 <5 3.3 0.058 <1 <1 <1 338MW-12S 07/11/2016 4.9 9.82 12.8 392 <1 <1 13 <1 12.8 <50 <1 2.89 <5 2.9 0.045 <1 <1 1.9 385MW-12S09/07/20165.89.249.5284<1<112<19.5<50<11.56<53.20.16<1<1<1270MW-12S 11/04/2016 5.6 9.12 9.2 200 <1 <1 11 <1 9.2 <50 <1 1.14 B1 <5 3.1 0.088 <1 <1 1.08 245MW-12S12/07/20166.39.9713321<1<18<113<50<12.12<52.20.96<1<12.22327MW-12S 02/01/2017 6.5 8.5323.8361 <11.7911 <123.8<50 <17.07 B2<50.365.71.611.659.463240BG-02 07/11/2011 6.3 9.2 --- 298 <0.5 <5 64.8 B --- --- <50 <0.08 --- --- 32.6 B --- 10.2 --- --- ---BG-02 11/03/2011 6.3 5.63 --- 180 <0.5 <5 67.7 --- --- <50 <0.08 --- --- 32.9 --- 7.5 --- <5 312BG-02 04/04/2012 6.3 5.55 --- <100 <0.5 <5 61.5 --- --- <50 <0.08 --- --- 32.6 --- <5 --- <5 152BG-02 07/09/2012 6.3 9.47 --- 262 <0.5 <5 53.4 --- --- <50 <0.08 --- --- 35.3 --- 5.9 --- <5 460BG-02 11/05/2012 6.3 9.02 --- 506 <0.5 <5 60.2 --- --- <50 <0.08 --- --- 33.3 --- 6 --- <5 759BG-02 04/10/2013 6.3 8.5 --- 226 <1 <1 66 --- --- <50 <1 --- --- 28 --- <5 --- <5 646BG-02 07/09/2013 6.4 8.08 --- 412 <1 <1 69 --- --- <50 <1 --- --- 30 --- <5 --- <5 1130BG-02 11/13/2013 6.4 9.5 --- 384 <1 <1 62 --- --- <50 <1 --- --- 29 --- <5 --- <5 841BG-02 04/01/2014 6.4 7.5 --- 316 <1 <1 71 --- --- <50 <1 --- --- 28 --- <5 --- <5 943BG-02 07/18/2014 6.4 7.71 --- 355 <1 <1 65 --- --- <50 <1 --- --- 30 --- <5 --- <5 1010BG-02 11/12/2014 6.3 5.33 --- 233 <1 <1 61 --- --- <50 <1 --- --- 30 --- <5 --- <5 647BG-02 04/13/2015 6.3 7.09 259 136 <1 <1 54 <1 259 <50 <1 57 <5 28 --- <5 <1 <5 435BG-02 07/07/2015 6.5 8.51 225 193 <1 <1 54 <1 225 <50 <1 56.1 <5 30 --- <5 <1 <5 467BG-02 9/11/2015 6.4 6.88 220 82 <1 <1 50 <1 220 <50 <1 50.6 <10 32 --- 4.05 <1 <1 244BG-02 12/09/2015 6.4 5.24 257 M1 <100 <0.5 <0.5 60 <0.2 257 <50 <0.08 57.2 M1 <5 29.7 <0.03 <0.5 B <0.5 <1 450BG-0201/08/20166.41.9826380<1<158<1263<50<157.3<533<0.03<1<11.21471BG-02 04/04/2016 6.4 2.71 303 65 <1 <1 65 <1 303 <50 <1 59.2 <5 30 <0.03 <5 <1 <5 585BG-02 07/13/2016 6.2 3.4 302 58 <1 <1 59 <1 302 <50 <1 59.9 <5 30 <0.03 <5 <1 <5 484BG-0209/07/20166.72.9257151<1<159<1257<50<156.4<533<0.03<1<1<1553BG-02 11/02/2016 6.3 5.07 240 59 <1 <1 48 <1 240 <50 <1 51.3 <5 34 <0.03 <1 <1 <1 213BG-02 01/30/2017 6.6 9.68 228 82 <1 <1 43 <1 228 <50 <1 50 B2 <5 33 0.055 <1 <1 <1 184MW-12D 06/24/2015 6.2 4.02 53 184 1.63 <1 26 <1 53 <50 <1 12.6 <10 4 --- <11.37<1 326MW-12D 09/10/2015 6.2 3.88 57 220 <1 <1 20 <1 57 <50 <1 11.7 <10 4.1 --- 1.1 <1 <1 277MW-12D 12/04/2015 6.1 8.08 53.2 150 <0.5 <0.5 20 <0.2 53.2 <50 0.099 11.5 <5 3.7 0.64 M1 4.6 0.51 <1 280MW-12D01/07/20166.19.2653.5678<1<122<153.5<50<111.7<54.50.52 M12.99<11.54968MW-12D 04/05/2016 5.9 9.9 55.1 370 <1 <1 21 <1 55.1 <50 <1 11.4 <5 4.5 0.6 1.64 <1 <1 385MW-12D 07/11/2016 5.7 9.35 56.3 155 <1 <1 17 <1 56.3 <50 <1 11.5 <5 4.4 0.73 1.19 <1 <1 223MW-12D09/07/20166.39.253.5257<1<116<153.5<50<110.9<54.80.752.99<1<1409MW-12D 11/04/2016 6.3 9.09 55 272 <1 <1 16 <1 55 <50 <1 10.6 B1 <5 4 0.64 1.92 <1 <1 405MW-12D 02/01/2017 6.1 8.42 54.9 115 <1 <1 14 <1 54.9 <50 <1 10.3 B2 <5 3.8 0.69 1.39 <1 <1 243MW-12D03/28/20175.95.754.3140<1<115<154.3<50<112.1<54.30.631.25<11.24242Transition ZoneAnalytical ParameterReporting Units15A NCAC 02L StandardField ParametersAnalytical ResultsSurficialP:\Duke Energy Progress.1026\105. Mayo Ash Basin GW Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\Tables\Table 10-1 Background Groundwater Results Through April 2017_2.xlsxPage 1 of 4
TABLE 10-1BACKGROUND GROUNDWATER RESULTS THROUGH APRIL 2017MAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLC, ROXBORO, NCLead Magnesium Manganese Mercury Methane Molybdenum Nickel Nitrate + Nitrite Potassium Selenium Sodium Strontium Sulfate Sulfide TDS Thallium TOC Vanadium Zinc Radium (Total) Uranium (Total)ug/L mg/L ug/L ug/L ug/L ug/L ug/L mg-N/L mg/L ug/L mg/L ug/L mg/L mg/L mg/L ug/L mg/L ug/L ug/L pCi/L ug/mL15 NE 50 1 NE NE 100 11 NE 20 NE NE 250 NE 500 0.2* NE 0.3* 1000 NE NESample IDSampleCollection DateMW-12S 09/10/2015 <1 0.723 253 <0.05 12 <1 2.98 0.7 1.53 <1 5.43 23 1.4 <0.1 55 <0.2 0.633 <0.3 64 --- ---MW-12S12/02/2015<10.792152<0.05<10<15.410.6381.4<15.08211.3<0.126<0.20.5190.31379------MW-12S 01/07/2016 <1 0.753 68 <0.05 <10 <1 1.6 0.599 1.58 <1 4.76 18 1.4 <0.1 35 <0.2 1.6 <0.3 157 --- ---MW-12S 04/06/2016 <1 0.749 24 <0.05 <10 <1 <1 0.798 1.22 <1 5.49 17 1.2 <0.1 29 <0.2 0.522 0.408 43 3.537 0.000367MW-12S 07/11/2016 <1 0.694 34 <0.05 <10 <1 1.16 0.566 1.89 <1 4.34 21 1.6 <0.1 43 <0.2 2 0.974 227 2 0.00035MW-12S09/07/2016<10.6411<0.05<10<1<10.7561.36<14.78161.1<0.152<0.20.7630.7111402.560.00035MW-12S 11/04/2016 <1 0.661 B1 19 <0.05 <10 <1 1.19 0.739 1.35 <1 4.85 B2 16 0.89 <0.1 52 <0.2 0.53 0.593 73 2 0.00035MW-12S12/07/2016<10.62222<0.05<10 HS10.31.220.4192.33<14.06142.3<0.157<0.23.60.69864 B21.540.0002338MW-12S 02/01/20172.411.11211 <0.0536 N23.15 3.03 <0.01 3.78 <10.566 B225 1.6 <0.1 85 <0.2 B5145.990 2 0.000262BG-02 07/11/2011 <5 --- 64.2 <0.2 --- --- 9.4 B --- --- <10 --- --- 7.2 B --- 367 B <0.1 --- --- <10 --- ---BG-02 11/03/2011 <5 --- 36.7 <0.2 --- --- 5.2 --- --- <10 --- --- 6.9 --- 341 <0.1 --- --- <10 --- ---BG-02 04/04/2012 <5 --- 27 <0.2 --- --- <5 --- --- <10 --- --- 7.5 --- 412 <0.1 --- --- <10 --- ---BG-02 07/09/2012 <5 --- 54.9 <0.2 --- --- <5 --- --- <10 --- --- 7.7 --- 382 <0.1 --- --- <10 --- ---BG-02 11/05/2012 <5 --- 43.7 <0.2 --- --- <5 --- --- <10 --- --- 8.3 --- 389 <0.1 --- --- <10 --- ---BG-02 04/10/2013 <1 --- 111 0.18 --- --- <5 --- --- <1 --- --- 5.4 --- 430 <0.2 --- --- <5 --- ---BG-02 07/09/2013 <1 --- 248 0.11 --- --- <5 --- --- <1 --- --- 5.2 --- 430 <0.2 --- --- <5 --- ---BG-02 11/13/2013 <1 --- 177 0.11 --- --- <5 --- --- <1 --- --- 5.2 --- 360 <0.2 --- --- <5 --- ---BG-02 04/01/2014 <1 --- 226 0.06 --- --- <5 --- --- <1 --- --- 4.8 --- 450 <0.2 --- --- 8 --- ---BG-02 07/18/2014 <1 --- 244 0.08 --- --- <5 --- --- <1 --- --- 4.9 --- 400 <0.2 --- --- 5 --- ---BG-02 11/12/2014 <1 --- 180 <0.05 --- --- <5 --- --- <1 --- --- 5 --- 370 <0.2 --- --- 8 --- ---BG-02 04/13/2015 <1 11.8 150 0.06 --- <1 <5 --- 3.27 <1 49.7 --- 4.8 --- 380 <0.2 --- --- 11 --- ---BG-02 07/07/2015 <1 12 135 <0.05 --- <1 <5 --- 3.61 <1 48.2 --- 5.1 --- 370 <0.2 --- 5.88 15 --- ---BG-02 9/11/2015 <1 10.6 130 <0.05 400 <1 2.87 0.019 3.56 <1 44.6 291 5.4 <0.1 330 <0.2 1.4 423--- ---BG-02 12/09/2015 <0.1 12.3 200 <0.2 660 0.74 0.82 <0.02<5<0.5 51.3 390 5.1 <0.1 314 <0.1 1.1 5.8 12 --- ---BG-0201/08/2016<112.6196<0.05477<1<1<0.013.4<150.63505.5<0.1370<0.21.34.2<5------BG-02 04/04/2016 <1 13.9 237 <0.05 1130 <1 <5 --- 3.34 <1 56 391 4.9 <0.1 360 <0.2 1.8 5 <5 7.07 0.00117BG-02 07/13/2016 <1 13.5 207 <0.05 2260 <1 <5 <0.01 3.23 <1 53.3 374 4.9 <0.1 370 <0.2 1.6 4.79 <5 7.52 0.001068BG-0209/07/2016<113.1194<0.051670<1<1<0.013.31<153.53785.6<0.1370<0.21.65.34<51.9970.000941BG-02 11/02/2016 <1 10.8 131 <0.05 1120 N2 <1 <1 0.02 3.48 <1 45.3 320 5.6 <0.1 330 H1 <0.2 1.4 3.63 <5 3.36 0.001005BG-02 01/30/2017 <1 10.6 104 <0.05 801 N2 <1 <1 <0.01 3.48 <1 44 B2 287 5.6 <0.1 320 <0.2 1.4 4.14 B2 <5 2 0.001076MW-12D 06/24/2015 <1 3.44683<0.05 <101.752.5 0.08 1.6 <1 8.98 95 0.96 <0.1 120 <0.2 0.396 0.719 <5 --- ---MW-12D 09/10/2015 <1 3.04 218 <0.05 <10 <1 1.350.6641.41 <1 9.03 85 0.99 <0.1 100 <0.2 1.7 0.637 9 --- ---MW-12D 12/04/2015 <0.1 3.24 160 <0.2 <10 0.8 3.7 0.15<5<0.5 9.56 85 <1 <0.1 122 <0.1 <1 <1 <10 --- ---MW-12D01/07/2016<13.28131<0.05<10<12.230.1391.39<18.76871.1<0.182<0.20.1841.655------MW-12D 04/05/2016 <1 3.27 100 <0.05 <10 <1 1.49 0.146 1.42 <1 9.35 92 1.1 <0.1 120 <0.2 0.314 1.06 <5 9 0.000383MW-12D 07/11/2016 <1 3.16 81 <0.05 17.9 <1 1.23 0.176 1.36 <1 9.26 88 1.1 <0.1 98 <0.2 0.276 0.898 6 3.62 0.0002419MW-12D09/07/2016<13.0264<0.0519.4<12.020.181.34<19.05831.1<0.1100<0.20.2891.1353.190.000255MW-12D 11/04/2016 <1 2.97 B1 56 <0.05 28.5 N2 <1 1.37 0.166 1.37 <1 8.39 B2 85 1.1 <0.1 110 <0.2 0.171 1.25 <5 1.659 0.000318MW-12D 02/01/2017 <1 2.8 96 <0.05 71 N2 <1 1.62 0.19 1.22 <1 8.18 B2 83 1 <0.1 110 <0.2 B5 0.366 0.874 <5 1.835 0.000296MW-12D03/28/2017<13.245<0.05<10<11.290.191.41<19.26851.1<0.1960.20.192 B30.805<55.680.000273Transition ZoneAnalytical ParameterReporting Units15A NCAC 02L StandardAnalytical ResultsSaproliteP:\Duke Energy Progress.1026\105. Mayo Ash Basin GW Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\Tables\Table 10-1 Background Groundwater Results Through April 2017_2.xlsxPage 2 of 4
TABLE 10-1BACKGROUND GROUNDWATER RESULTS THROUGH APRIL 2017MAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLC, ROXBORO, NCpH Turbidity Alkalinity Aluminum Antimony Arsenic Barium Beryllium Bicarbonate Boron Cadmium Calcium Carbonate Chloride Chromium (VI) ChromiumCobalt Copper IronAnalytical ParameterS.U. NTUs mg/L ug/L ug/L ug/L ug/L ug/L mg/L ug/L ug/L mg/L mg/L mg/L ug/L ug/L ug/L ug/L ug/L6.5-8.5 NE NE NE 1* 10 700 4* NE 700 2 NE NE 250 10 10 1* 1000 300Sample IDSampleCollection DateBG-01 11/3/2011 5.5 3.84 ---216 <0.5<595.4 ------<50 0.2 ------13.1 ---7.9 ---<5 261BG-01 04/04/2012 5.6 9.52 ---191 <0.5<593 ------<50 0.12 ------14.3 ---6.7 ---<5 388BG-01 07/09/2012 5.3 9.32 ---478 <0.5<5101 ------<50 0.13 ------14.6 ---20---<5 640BG-01 11/05/2012 5.4 9.45 ---465 <0.5<5101 ------<50 0.089 ------13.4 ---<5 ---<5 526BG-01 04/10/2013 5.2 9.05 ---202 <1 <1 97 ------<50 <1 ------13 ---7 ---<5 323BG-01 07/09/2013 5.4 8.95 ---383 <1 <1 97 ------<50 <1 ------13 ---<5 ---<5 488BG-01 11/13/2013 5.5 8.2 ---339 <1 <1 95 ------<50 <1 ------12 ---<5 ---<5 412BG-01 04/01/2014 5.4 8.2 ---202 <1 <1 90 ------<50 <1 ------12 ---<5 ---<5 290BG-01 07/18/2014 5.5 6.68 ---245 <1 <1 93 ------<50 <1 ------12 ---<5 ---<5 325BG-01 11/12/2014 5.5 9.96 ---332 <1 <1 95 ------<50 <1 ------12 ---<5 ---<5 466BG-01 04/13/2015 5.5 8.9 49.8 392 <1 <1 90 <1 49.8 <50 <1 12.5 <5 11 ---<5 <1 <5 409BG-01 09/10/2015 5.3 7.83 54 276 <1 <1 91 <1 54 <50 <1 12.8 <10 11 ---<1 <1 <1 300BG-0111/03/20156.91.7952.133<1<190<152.1<50<112.8 B2<512---<5<1<545BG-01 12/05/2015 5.5 9.5 52.8 250 <0.5 <0.5 94 <0.2 52.8 <50 0.13 12.6 <5 10.1 0.31 1 <0.5 <1 350BG-0101/08/20165.15.7851.1227<1<187<151.1<50<112.6<5120.2<1<1<1272BG-01 04/04/2016 5.5 4.3 53 177 <1 <1 88 <1 53 <50 <1 12.1 <5 11 0.19 M1 <5 <1 <5 190BG-01 07/13/2016 5.0 3.84 53.1 66 <1 <1 86 <1 53.1 <50 <1 12.3 <5 12 0.23 <5 <1 <5 89BG-0109/08/20165.59.4952.9275<1<190<152.9<50<112<5110.3<1<1<1336BG-01 11/02/2016 5.5 2.98 52.8 48 <1 <1 90 <1 52.8 <50 <1 12.4 <5 11 0.23 <1 <1 <1 50BG-0102/01/20175.61.3752.8231<1<187<152.8<50<112.2<59.50.29<1<11.22200BG-01 03/28/2017 5.4 0.47 53 218 <1 <1 87 <1 53 <50 <1 12.9 <5 11 0.25 <1 <1 <1 137MW-13BR 06/23/2015 7.2 2.22 210 37 <1 <1 40 <1 210 <50 <1 75.2 <10 46 ---<1 1.19 <1 1130MW-13BR 09/08/2015 6.9 7.55 230 143 B1 <1 <1 51 <1 230 <50 <1 73 <10 43 ---<1 <1 <1 2400MW-13BR12/02/20157.06.5210171<1<145<1210<50<172.7<1041<0.0316.3<11.22490MW-13BR 01/07/2016 7.3 7.79 223 M1 230 <1 <1 42 <1 223 <50 <1 73.3 <5 45 <0.03 7.65 <1 <1 2550MW-13BR 04/05/2016 7.1 9.05 217 97 <1 <1 35 <1 217 <50 <1 70.8 <5 43 <0.03 <1 1.01 <1 1750MW-13BR 07/11/2016 7.0 8.8 211 407 <1 <1 29 <1 211 <50 <1 70.2 <5 40 <0.03 4.511.921.95 1330MW-13BR09/06/20167.49.67216134<1<138<1216<50<169.7<538<0.032.021.17<12520MW-13BR 11/08/2016 6.9 9.9 221 102 <1 <1 35 <1 221 <50 <1 67 <5 37 0.18 3.582.02<1 2430MW-13BR 02/02/2017 6.9 9.13 213 91 <1 <1 31 <1 213 <50 <1 65 <5 34 0.26 2.72.91<1 2920MW-14BR 09/09/2015 6.9 3.36 160 61 <1 1.8 42 <1 16065<1 20.2 <10 11 ---<1 1.09 <1 2730MW-14BR12/02/20156.72.7710077<1<122<1100<50<113.4<1011<0.03<1<1<1396MW-14BR 01/07/2016 6.7 2.45 94.8 163 <1 <1 17 <1 94.8 <50 <1 13 <5 13 <0.03 <1 <1 1.21 98MW-14BR 04/05/2016 6.7 2.45 104 225 <1 <1 19 <1 104 <50 <1 13 <5 13 <0.03 <1 <1 1.87 89MW-14BR 07/11/2016 6.7 1.34 130 58 <1 <1 22 <1 130 <50 <1 14.4 <5 13 <0.03 <1 <1 1.58 37MW-14BR09/07/20166.75.6913059<1<128<1130<50<115.3 M4<514<0.03<1<11.4356MW-14BR 11/08/2016 7.0 3.74 136 129 <1 <1 28 <1 136 <50 <1 16.2 <5 13 <0.025 <1 1.14 1.97 172MW-14BR 02/02/2017 6.7 1.14 121 63 <1 <1 19 <1 121 <50 <1 28.9 <5 13 0.067 <1 <1 1.36 37Prepared by: LWD Checked by: Notes:54 - Indicates value omitted from dataset. --- - Indicates parameter not measured or analyzed. - Indicates data removed /identified as an outlier. - Indicates data removed due to autocorrelation.mg - N/L - Milligrams nitrogen per liter pCi/L - picocuries per litermg/L - Milligrams per literS.U. - Standard UnitNE - Not establishedug/L - Micrograms per literNTU - Nephelometric turbidity unit ug/mL - micrograms per milliliter< - concentration not detected at or above the reporting limit.* - Interim Maximum Allowable Concentrations (IMACs) of the 15A NCAC 02L Standard, Appendix 1, April, 1, 2013.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.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.HS - Results are from sample aliquot taken from VOA vial with headspace (air bubble greater than 6 mm diameter).BedrockReporting Units15A NCAC 02L StandardField ParametersAnalytical ResultsP:\Duke Energy Progress.1026\105. Mayo Ash Basin GW Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\Tables\Table 10-1 Background Groundwater Results Through April 2017_2.xlsxPage 3 of 4
TABLE 10-1BACKGROUND GROUNDWATER RESULTS THROUGH APRIL 2017MAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLC, ROXBORO, NCLead Magnesium Manganese Mercury Methane Molybdenum Nickel Nitrate + Nitrite Potassium Selenium Sodium Strontium Sulfate Sulfide TDS Thallium TOC Vanadium Zinc Radium (Total) Uranium (Total)Analytical Parameterug/L mg/L ug/L ug/L ug/L ug/L ug/L mg-N/L mg/L ug/L mg/L ug/L mg/L mg/L mg/L ug/L mg/L ug/L ug/L pCi/L ug/mL15 NE 50 1 NE NE 100 NE NE 20 NE NE 250 NE 500 0.2* NE 0.3* 1000 NE NESample IDSampleCollection DateBG-01 11/03/2011<5---8.9<0.2------6.2 ------<10------<5 ---106 <0.1 ------<10 ------BG-01 04/04/2012<5---11.6<0.2------<5 ------<10------<5 ---107 <0.1 ------<10 ------BG-01 07/09/2012<5---21.6<0.2------9.4 ------<10------2 ---128 <0.1 ------<10 ------BG-01 11/05/2012<5---55.6<0.2------<5 ------<10------<2 ---123 <0.1 ------11.6 ------BG-01 04/10/2013 <1 ---15 <0.05 ------<5 ------<1 ------0.44 ---130 <0.2 ------7 ------BG-01 07/09/2013 <1 ---48 <0.05 ------<5 ------<1 ------0.52 ---130 <0.2 ------12 ------BG-01 11/13/2013 <1 ---27 <0.05 ------<5 ------<1 ------0.51 ---130 <0.2 ------30 ------BG-01 04/01/2014 <1 ---14 <0.05 ------<5 ------<1 ------0.4 ---140 <0.2 ------29 ------BG-01 07/18/2014 <1 ---15 <0.05 ------<5 ------<1 ------0.46 ---140 <0.2 ------16 ------BG-01 11/12/2014 <1 ---25 <0.05 ------<5 ------<1 ------0.51 ---120 <0.2 ------34 ------BG-01 04/13/2015 <1 3.35 35 <0.05 ---<1 <5 ---1.4 <1 12.4 ---0.32 ---130 <0.2 ------29 ------BG-01 09/10/2015 <1 3.41 26 <0.0516<1 1.78 0.645 1.38 <1 11.6 172 0.37 <0.1 120 <0.2 0.913 3.93 17 ------BG-0111/03/2015<13.287<0.05---<1<5---1.35<111.8 B21790.36---110<0.2---3.4<5------BG-01 12/05/2015 0.13 3.28 18<0.2<10 <0.5 1.9 0.66 <5 <0.5 12.2 180 <1 <0.1 118 <0.1 1 4.2 14 ------BG-0101/08/2016<13.3611<0.05<10<11.240.6431.39<111.91660.24<0.1130<0.20.5583.94<5------BG-01 04/04/2016 <1 3.2 12 <0.05 <10 <1 <5 ---1.36 <1 11.5 167 0.25 <0.1 130 <0.2 0.738 3.94 7 5.25 0.00035BG-01 07/13/2016 <1 3.09 7 <0.05 <10 <1 <5 0.827 1.28 <1 11.9 177 0.23 <0.1 140 <0.2 0.723 3.58 <5 2.29 0.00035BG-0109/08/2016<13.2113<0.05<10<11.460.8281.32<111.71720.32<0.1130<0.20.6674.69263.8760.00035BG-01 11/02/2016 <1 3.18 8 <0.05 <10 N2 <1 1.82 0.811 1.31 <1 11.4 183 0.26 <0.1 110 H1 <0.2 0.565 3.82 <5 6.24 0.00035BG-0102/01/2017<13.1913<0.05<10 N2<11.60.8091.33<111.21740.26<0.1140<0.20.7034.34 B5<520.00035BG-01 03/28/2017 <1 3.28 10 <0.05 <10 <1 1.41 0.834 1.38 <1 12.5 173 0.25 <0.1 120 <0.2 0.64 B3 4 <5 2.862 0.00035MW-13BR 06/23/2015 <1 13.1 474 <0.05 <10 8.28 <1 <0.01 5.49 <1 25.7 418 180.115370 <0.2 0.9 0.381 36 4.22 0.00035MW-13BR 09/08/2015 <1 12.9 630 <0.05 <10 5.17 <1 <0.01 M2 5.31 <1 24.8 430 12 <0.1 3600.5380.859 0.46599------MW-13BR12/02/2015<113.5548<0.05<105.867.97<0.015.09<123.341614<0.2330<0.20.7610.42954------MW-13BR 01/07/2016 <1 12.9 519 <0.0525.95.81 4.98 <0.01 5.12 <1 23.7 389 15 <0.1 330 <0.2 0.647 <0.3 37 ------MW-13BR 04/05/2016 <1 12.9 481 <0.05274.3 <1 <0.01 4.72 <1 20.8 393 17 <0.1 340 <0.2 0.733 <0.3 9 5.650.00644MW-13BR 07/11/2016 <1 13 348 <0.0554.63.2 2.82 <0.01 4.72 <1 19.4 380 18 <0.1 330 <0.2 0.594 0.871 23 3.103 0.00203MW-13BR09/06/2016<112.7432<0.051352.981.68<0.014.58<118.438116<0.1330<0.2 B20.645<0.33868.20.000601MW-13BR 11/08/2016 <1 12.3 471 <0.0599.6 N22.85 2.26 <0.01 4.46 <1 17.3 374 15 <0.1 310 <0.2 0.574 0.38 6 1.392 0.000569MW-13BR 02/02/2017 <1 12 421 <0.0555 N22.35 1.39 <0.01 4.43 <1 16.8 353 15 <0.1 320 <0.2 0.458 0.406 <5 2.01 0.000617MW-14BR 09/09/2015 <1 3.07 648 <0.051327.3<1 0.011 M2 6.56 <1 60.2 167 27 <0.1 260 <0.2 1.3 0.469 <5 ------MW-14BR12/02/2015<12.29304<0.05<106.62<10.1125.75<141.614110<0.1210<0.20.8221.82<5------MW-14BR 01/07/2016 <1 2.36 199 <0.05 <10 4.56 <1 0.384 4.49 <1 37.4 131 10 <0.1 180 <0.2 0.855 2.45 <5 ------MW-14BR 04/05/2016 <1 2.36 196 <0.05 <10 5.06 <1 0.346 4.06 <1 38.4 134 9.9 <0.1 200 <0.2 0.873 2.86 <5 3.999 0.000391MW-14BR 07/11/2016 <1 2.51 247 <0.05 <10 8.07 <1 0.157 5.18 <1 47.9 140 11 <0.1 200 <0.2 0.84 2.48 11 1.947 0.000606MW-14BR09/07/2016<12.57322<0.05<109.57<10.1917.13<146.3 M416812<0.1230<0.20.8872.07730.000464MW-14BR 11/08/2016 <1 2.64 385 <0.0512.2 N210.7 <1 0.187 6.78 <1 49.9 158 9.6 <0.1 220 <0.2 0.785 1.56 6 2.07 0.000539MW-14BR 02/02/2017 <1 13.1 96 <0.05 <10 N2 5.04 <1 0.291 4.04 <1 38.4 150 8.6 <0.1 200 <0.2 0.832 2.07 <5 2 0.000355Prepared by: JHG Checked by: JAWNotes:54 - Indicates value omitted from dataset. --- - Indicates parameter not measured or analyzed. - Indicates data removed /identified as an outlier. - Indicates data removed due to autocorrelation.mg - N/L - Milligrams nitrogen per liter pCi/L - picocuries per litermg/L - Milligrams per literS.U. - Standard UnitNE - Not establishedug/L - Micrograms per literNTU - Nephelometric turbidity unitug/mL - micrograms per milliliter< - concentration not detected at or above the reporting limit.* - Interim Maximum Allowable Concentrations (IMACs) of the 15A NCAC 02L Standard, Appendix 1, April, 1, 2013.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.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.HS - Results are from sample aliquot taken from VOA vial with headspace (air bubble greater than 6 mm diameter).Analytical ResultsBedrockReporting Units15A NCAC 02L StandardP:\Duke Energy Progress.1026\105. Mayo Ash Basin GW Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\Tables\Table 10-1 Background Groundwater Results Through April 2017_2.xlsxPage 4 of 4
TABLE 10-2
GROUNDWATER PROVISIONAL BACKGROUND THRESHOLD VALUES
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC, ROXBORO, NC
Surficial† Transition Zone Bedrock
pH* S.U. 6.5-8.5 4.9 - 6.5 5.7 - 6.5 5.0 - 7.3
Alkalinity mg/L NE 13 302 223
Aluminum µg/L NE 566 490 536
Antimony µg/L 1∆11 1
Arsenic µg/L 10 1 1 1
Barium µg/L 700 19 78.3 97
Beryllium µg/L 4∆11 1
Bicarbonate mg/L NE 13 302 223
Boron µg/L 700 50 50 50
Cadmium µg/L 2 1 1 1
Calcium mg/L NE 2.89 59.2 73.3
Carbonate mg/L NE 5 5 5
Chloride mg/L 250 3.3 33.3 43
Chromium (VI) µg/L NE 0.088 1.26 0.4
Chromium µg/L 10 3.23 6 7
Cobalt µg/L 1∆1.02 1 1.19
Copper µg/L 1000 1.9 5 5
Iron µg/L 300 385 1319 2550
Lead µg/L 15 1 1 1
Magnesium mg/L NE 0.753 13.5 13.1
Manganese µg/L 50 253 298 519
Mercury µg/L 1 0.2 0.2 0.05
Methane µg/L NE 12 2256 10
Molybdenum µg/L NE 3.15 1 13.1
Nickel µg/L 100 3.03 5 5
Nitrate + Nitrite mg-N/L NE 0.798 0.295 1.03
Potassium mg/L NE 3.78 3.61 6.56
Selenium µg/L 20 1 1 1
Sodium mg/L NE 5.49 53.3 72.6
Strontium µg/L NE 25 391 418
Sulfate mg/L 250 1.6 7.5 18
Sulfide mg/L NE 0.1 0.1 0.1
TDS mg/L 500 85 430 340
Thallium µg/L 0.2∆0.2 0.2 0.2
TOC mg/L NE 2 1.8 1.01
Vanadium µg/L 0.3∆0.974 5.88 5.52
Zinc µg/L 1000 227 12 37.9
Radium (Total) pCi/L NE 4.000 9† 7.6
Uranium (Total) µg/mL NE 0.000367 0.001† 0.00203
Notes:
Updated value based upon ongoing statistical evaluation since September 1, 2017 (Zimmerman To Draovitch; Appendix A).
* - Upper and lower tolerance limits calculated for parameter
∆ - Interim Maximum Allowable Concentrations (IMACs) of 15A NCAC .02L Standard, Appendix 1, April 1, 2013
† - Indicates value is provisional; dataset contains less than 10 valid samples
Surficial (Saprolite) background wells: MW-12S
Transition Zone background wells: BG-2 and MW-12D
Bedrock background wells: BG-1, MW-13BR, and MW-14BR
Radium (Total) - Radium-226 and Radium-228 combined
Uranium (Total) - Uranium-233, Uranium-234, Uranium-236, and Uranium-238 combined
µg/L - micrograms per liter NE - Not Established
µg/mL - micrograms per milliliter pCi/L - picocuries per liter
mg/L - milligrams per liter S.U. - Standard Unit
ND - Not Detected TDS - Total Dissolved Solids
Provisional Background Threshold Values
NCAC 02L
StandardReporting UnitParameter
Prepared by: JHG Checked by: JAW / RKD
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Table 10-2 Groundwater Provisional Background Threshold Values.xlsx Page 1 of 1
TABLE 13-1
SUMMARY OF Kd VALUES FROM BATCH AND COLUMN STUDIES
MAYO STEAM STATION
DUKE ENERGY COMPLEX, LLC, ROXBORO, NC
Arsenic Boron Chromium Cobalt Thallium Vanadium
Trial - 1 166 1.0 32 770 1634 51
Trial - 2 172 1.0 47 1691 1673 57
Trial - 1 6.0 0.0 IDNA 1732 509 38
Trial - 2 7.0 1.0 IDNA IDNA 570 IDNA
Trial - 1 10 1.0 IDNA IDNA 884 4.0
Trial - 2 9.0 1.0 IDNA IDNA 1073 5.0
Trial - 1 4.0 1.0 IDNA 6552 901 IDNA
Trial - 2 3.0 0.0 IDNA IDNA 1442 IDNA
Trial - 1 517 2.0 IDNA 909 2242 388
Trial - 2 533 2.0 IDNA IDNA 2272 IDNA
Trial - 1 607 1.0 3.0 66 2860 618
Trial - 2 576 1.0 3.0 69 803 558
Trial - 1 1795 1.0 IDNA 2226 1726 600
Trial - 2 1638 2.0 IDNA 2256 1793 517
Trial - 1 92 0.0 11 839 4656 52
Trial - 2 34 1.0 13 1528 145 57
Trial - 1 70 1.0 IDNA IDNA 455 IDNA
Trial - 2 92 0.0 IDNA IDNA 698 40
Trial - 1 8.0 0.0 418 6552 330 2.0
Trial - 2 9.0 IDNA IDNA IDNA 347 2.0
Trial - 1 4269 IDNA 6.0 908 1210 2179
Trial - 2 5681 IDNA 6.0 1277 1419 4050
91.1 0.0 14.5 1081.4 1018.3 82.5
92.0 1.0 11.0 1402.5 1141.5 57.0
8.8 0.0 4.5 821.8 554.8 21.5
1 Trial Only 125 - - 250 315 85
1 Trial Only 12 - - 320 140 15
1 Trial Only 250 5.0 - 240 250 240
1 Trial Only 160 - - 135 135 130
1 Trial Only 400 - - 425 450 340
1 Trial Only 190 - - 370 380 150
1 Trial Only 210 - - 370 400 180
1 Trial Only 35 - - 310 320 25
1 Trial Only 120 15 - 370 360 110
Trial A 30 - - 290 175 25
Trial B 12 - - 290 170 15
Trial C 15 - - 260 155 15
1 Trial Only 260 - - 250 240 240
80.2 8.7 - 288.2 247.4 71.8
125.0 10.0 - 290.0 250.0 110.0
22.5 - - 250.0 162.5 20.0
Notes: Prepared by: EMB Checked by: LWD
- = No Data
IDNA = isotherm data not available
Units reported in milliliters per gram (mL/g)
Zero values were replaced with 1x10-30 to allow for geometric mean calculations.
Column Kd values are from the Soil Sorption Evaluation Report (Langley, W.G. & Oza, S., 18 Nov. 2015).
Lower Quartile (exclusive)
MW-8BR (19-22)
MW-12BR (50-51.5)
Batch sorption Kd values were taken from the linear isotherm (So = 0) values from the Addendum to Soil Sorption Evaluation (Langley, W.G.
& Dongwook, K., 2 Feb. 2016).
ABMW-2BR (97-100)
SB-7 (4.5-7.5)
Geometric Mean
Median
Lower Quartile (exclusive)
ABMW-2BR (97-100)
Column Study
MW-3BR (22-25)
MW-5BR (61-63)
MW-8BR (19-22)
MW-12BR (50-51.5)
MW-12BR (88-90)
MW-13BR (52-54)
MW-16BR (36.5-38)
MW-16BR (54-55)
ABMW-2 (57-59)
ABMW-2BR (97-100)
Geometric Mean
Median
Batch Study
Sample Site and Depth (feet)
MW-3BR (22-25)
ABMW-2 (57-59)
ABMW-2BR (97-100)
MW-12BR (88-90)
MW-13BR (52-54)
MW-16BR (36.5-38)
MW-16BR (54-55)
SB-7 (4.5-7.5)
MW-5BR (61-63)
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TABLE 15-1
GROUNDWATER INTERIM MONITORING PROGRAM ANALYTICAL METHODS
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC, ROXBORO, 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
Eh NA mV Field Water Quality Meter
Turbidity NA NTU Field Water Quality Meter
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
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 mg/L EPA 200.7 or 6010D
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
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
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 Organic Carbon 0.1 mg/L SM5310C/EPA9060A
Total Suspended Solids 5 mg/L SM 2450D
Prepared by: HHS Checked by: MCM
Notes:
NA indicates not applicable.
°C - Degrees Celsius
mg/L - Milligrams per liter
mV - 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
FIELD PARAMETERS
INORGANICS
RADIONUCLIDES
ANIONS/CATIONS/OTHER
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TABLE 15-2
INTERIM GROUNDWATER MONITORING PLAN SAMPLE LOCATIONS
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC, ROXBORO, NC
Well ID Radionuclides Well ID Radionuclides
ABMW-1 X MW-13BR
ABMW-2 MW-14BR
ABMW-2BR MW-15BR1
ABMW-2BRL MW-16BR X
ABMW-3 MW-16D X
ABMW-3S MW-16S
ABMW-4 X MW-2
ABMW-4BR MW-3 X
ABMW-4D MW-3BR
BG-1 X MW-4
BG-2 X MW-5BR
CW-1 MW-8BR
CW-1D MW-9BR1
CW-2 X MW-9BRL
CW-2D X MW-18D2
CW-3 MW-18BR2
CW-4 MW-19D2
CW-5 MW-19BR2
CW-6 X SW-CB13
MW-10BR X SW-CB23
MW-11BR1 SW-REF13
MW-12D X SW-CBT13
MW-12S X
Prepared by: RKD Checked by: JAW
Notes
1 - Water level only
2 - Added by agreement with NCDEQ-RRO
3 - Surface water; added by agreement with NCDEQ-RRO
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