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HomeMy WebLinkAboutNC0003433_Tables 2_20150902TABLE 12-1 RISK SCREENING TABLE: COAL ASH PORE WATER DATA CAPE FEAR STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, MONCURE, NC Redox Water Spec Ferrous Aluminum Antimony Arsenic Barium Beryllium gi- Boron Cadmium Calcium Carbonate Chromium Cobalt Copper Iron Analytical Parameter pH Temp DO ORP Eh Turbidity Alkalinity carbonate Chloride Cr(III)/Cr(VI) Assignment Level Cond Iron Alkalinity Alkalinity DIS TOT DIS TOT DIS TOT DIS TOT DIS TOT DIS TOT DIS TOT TOT DIS TOT DIS TOT DIS TOT DIS TOT Reporting Units None S.U. ft Deg C u/cos m g/l mV mV NTU mg/I mg/l ug/l ug/l ug/l ug/l ug/l ug/l ug/l ug/1 ug/l ug/l mg/I ug/I ug/I ug/l ug/l mg/l mg/I mg/l ug/I ug/l ug/l ug/l mg/l mg/l ug/I ug/l m 15A NCAC 02L Standard NE 6.5-8.5 NE NE NE NE NE NE NE NE NE NE NE NE 1* NE 10 NE 700 NE 4* NE NE 700 NE 2 NE NE 250 NE 10 NE 1* NE 1 NE 300 Sample ID Sample Field Parameters Analytical Results Collection Date ASH PORE WATER ABMW-011'I 05/08/2015 Anoxic 8.0 19.65 25 468 0.39 -202 3 4.13 NM 75 26 61 <1 <1 532 582 117 119 <1 <1 75 2310 2270 <1 <1 53.6 <10 18 <1 <1 <1 <1 <0.001 <0.001 1570 1620 ABMW-03(') 05/20/2015 NM NM NM NM NM NM NM NM NM NM 170 215 232 3.1 3.59 361 341 133 137 <1 <1 160 6250 6360 <1 <1 120 <10 6.7 <1 <1 <1 <1 <0.001 <0.001 70 91 ABMW-04(') 05/14/2015 Anoxic 7.3 16.23 19 840 0.19 -184 21 4.36 NM 230 13 30 <1 <1 709 1010 266 258 <1 <1 230 1410 1350 <1 <1 82.4 <10 37 <1 <1 <1 <1 <0.001 <0.001 3960 3630 PZ-06 08/05/2015 Anoxic 7.5 19.45 21 1083 0.31 -161 44 4.63 NM 310 43 170 2.17 2.3 607 647 307 312 <1 <1 310 5160 5380 <1 <1 183 <10 23 <1 <1 18.6 18.7 0.00381 <0.001 2660 3050 PZ-07 08/06/2015 Anoxic 4.0 10.80 18 7193 0.29 179 384 4.79 NM <10 431000 466000 <10 <10 201 193 42 <500 305 318 <10 1050 <5000 <10 <10 370 <10 13 145 138 1100 1050 <0.01 <0.01 2040000 2140000 PZ-08 08/05/2015 Anoxic 6.7 18.10 23 975 0.36 -34 172 4.17 NM 190 7 16 4.22 2.85 224 124 68 61 <1 <1 190 463 465 <1 <1 107 <10 41 <1 <1 12.7 17.8 <0.001 <0.001 2560 2390 DETECTIONS/SAMPLES --- --- --- --- --- --- --- --- --- --- 5/6 6/6 6/6 3/6 3/6 6/6 6/6 6/6 5/6 1/6 1/6 5/6 6/6 5/6 0/6 0/6 6/6 0/6 6/6 1/6 1/6 3/6 3/6 1/6 0/6 6/6 6/6 AVERAGE ASH PORE WATER CONCENTRATION (DETECTIONS --- --- --- --- --- --- --- --- --- --- 195 71,884 77,752 3.16 2.91 439 483 156 177 305 318 193 2,774 3,165 --- --- 153 --- 23 145 138 377 362 0.00381 --- 341,803 358,464 ONLY) MAXIMUM ASH PORE WATER GROUNDWATER CONCENTRATION --- --- --- --- --- --- --- --- --- 310 431,000 466,000 4.22 3.59 709 1,010 307 312 305 318 310 6,250 6,360 --- --- 370 --- 41 145 138 1,100 1,050 0.00381 --- 2,040,000 2,140,000 NUMBER OF ASH PORE WATER SAMPLES EXCEEDING 02L ___ 0 0 0 0 4 0 6 0 0 0 1 0 0 3 0 1 0 0 0 0 1 0 3 0FO 0 5 Prepared by: KDF Checked by: RLP Notes: 0- Bold highlighted concentration indicates exceedance of the 15A NCAC 02L, Appendix 2, April 1, 2013. 0- Highlighted concentration indicates analytical reporting limit is greater than the 15A NCAC 02L, Appendix 2, April 1, 2013. ORP = Oxidation Reduction Potential my = millivolts --- = Not applicable DIS = Dissolved NE = Not established TOT = Total NTU = nephelometric turbidity unit Temp = Temperature S.U. = Standard Unit DO = Dissolved Oxygen ug/I = microgram per liter Deg C = Degree Celsius umhos/cm = micro mhos per centimeter mg/I = milligrams per liter Spec Cond = Specific Conductance mg-N/L = miligram nitrogen per liter ft = feet < = concentration not detected at or above the reporting limit. * - Interim Maximum Allowable Concentrations (IMACs) of the 15A NCAC 02L, Appendix 1, April, 1, 2013. Note 1: Hexavalent Chromium concentration is less than EPA screening value for tapwater (0.035 ug/L). See Table 10-3 (USEPA Regional Screening Levels [RSLs] rev., ]une 26, 2015) P:\Duke Energy Progress. 1026\103. Cape Fear Ash Basin GW Assessment\1.11 CSA Reporting\Tables\Table 12-1 Ash Pore Water Risk Screening.xlsx Page 1 of 2 TABLE 12-1 RISK SCREENING TABLE: COAL ASH PORE WATER DATA CAPE FEAR STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, MONCURE, NC Lead Magnesium Manganese Mercury Molybdenum Nickel Nitrate Potassium Selenium Sodium Strontium Thallium Total Total Total Vanadium Zinc Analytical Parameter Methane (as N) Sulfate Sulfide Dissolved Organic Suspended Solids Carbon Solids DIS TOT TOT DIS TOT DIS I TOT DIS TOT DIS TOT TOT DIS TOT TOT DIS TOT DIS TOT DIS TOT DIS TOT Reporting Units ug/1 ug/I mg/l ug/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I mg-N/L mg/I ug/I ug/I mg/I mg/I mg/l mg/I mg/I ug/I ug/I mg/l mg/I mg/I ug/I ug/1 mg/l mg/I 1 15A NCAC 02L Standard NE 15 NE NE 50 NE 1 NE NE NE NE 100 10 NE NE 20 NE NE NE 250 NE NE 0.2* 500 NE NE NE 0.3* NE 1 Sample ID Sample Analytical Results Collection Date ASH PORE WATER ABMW-011'I 05/08/2015 <1 <1 7.08 163 161 <0.05 <0.05 <10 449 457 1.97 1.92 <0.01 8.64 1.26 <1 19 1.21 1.21 96 0.137 <0.2 <0.2 280 1.8 6 <0.3 0.522 <0.005 0.006 ABMW-031'i 05/20/2015 <1 <1 67.4 124 124 <0.05 <0.05 940 261 239 5.1 5.45 0.016 19.7 1.92 2.32 23.4 4.37 4.45 410 <0.2 0.442 0.422 820 1.2 <5 22.3 22.1 0.005 <0.005 ABMW-041'i 05/14/2015 <1 <1 17.3 409 395 <0.05 <0.05 6200 32.4 35.3 3.38 3.07 <0.01 13.4 1.67 <1 57 3.27 3.2 120 <0.2 <0.2 <0.2 500 1.3 10 <0.3 <0.3 0.006 <0.005 PZ-06 08/05/2015 <1 <1 24.9 1070 1110 <0.05 <0.05 56 263 269 16.2 15.9 <0.01 13 <1 <1 22 5.23 5.22 230 <0.1 <0.2 0.255 760 1.1 13 9.31 11.1 0.022 <0.005 PZ-07 08/06/2015 11.2 10.3 185 24800 26300 <0.05 <0.05 310 <10 <10 2180 2050 <0.01 97.9 16.1 16.4 79.7 10 11 18000 <0.1 13.2 12.6 12000 1.1 16 1910 1880 2.69 3.45 PZ-08 08/05/2015 <1 <1 1 25.4 1570 1 2170 <0.05 I <0.05 <10 122.1 1 16.9 33.9 1 43.5 0.082 1 12.4 <1 1.07 59.2 2.62 2.79 220 <0.1 1.02 1.31 620 0.492 42 9.49 6.43 0.028 0.011 DETECTIONS SAMPLES 1/6 1/6 6/6 6/6 6/6 0/6 0/6 4/6 5/6 5/6 6/6 6/6 2/6 6/6 4/6 3/6 6/6 6/6 6/6 6/6 1/6 3/6 4/6 6/6 6/6 5/6 4/6 5/6 5/6 3/6 AVERAGE ASH PORE WATER CONCENTRATION (DETECTIONS 11.2 10.3 54.5 4,689 5,043 --- --- 1,877 206 203 373.4 353.3 0.049 27.5 5.24 6.6 43.4 4.45 4.6 3,179 0.137 4.89 3.65 2,497 1.2 17 487.8 384.03 0.550 1.156 ONLY) MAXIMUM ASH PORE WATER GROUNDWATER CONCENTRATION 11.2 10.3 185.0 24,800 26,300 --- --- 6,200 449 457 2,180.0 2,050.0 0.082 97.9 16.10 16.4 79.7 10.00 11.0 18,000 0.137 13.20 12.60 12,000 1.8 42 1,910.0 1,880.00 2.690 3.450 NUMBER OF ASH PORE WATER SAMPLES EXCEEDING 02L 0 0 0 0 6 0 0 0 0F 0 1 0 0 0 0 0 0 0 1 2 0 0 4 4 0 0 0 5 0 1 Prepared by: KDF Checked by: RLP Notes: 0- Bold highlighted concentration indicates exceedance of the 15A NCAC 02L, Appendix 2, April 1, 2013. 0- Highlighted concentration indicates analytical reporting limit is greater than the 15A NCAC 02L, Appendix 2, April 1, 2013. ORP = Oxidation Reduction Potential my = millivolts --- = Not applicable DIS = Dissolved NE = Not established TOT = Total NTU = nephelometric turbidity unit Temp = Temperature S.U. = Standard Unit DO = Dissolved Oxygen ug/I = microgram per liter Deg C = Degree Celsius umhos/cm = micro mhos per centimeter mg/I = milligrams per liter Spec Cond = Specific Conductance mg-N/L = miligram nitrogen per liter ft = feet < = concentration not detected at or above the reporting limit. * - Interim Maximum Allowable Concentrations (IMACs) of the 15A NCAC 02L, Appendix 1, April, 1, 2013. Note 1: Hexavalent Chromium concentration is less than EPA screening value for tapwater (0.035 ug/L). See Table 10-3 (USEPA Regional Screening Levels [RSLs] rev., June 26, 2015) P:\Duke Energy Progress. 1026\103. Cape Fear Ash Basin GW Assessment\1.11 CSA Reporting\Tables\Table 12-1 Ash Pore Water Risk Screening.xlsx Page 2 of 2 TABLE 12-2 COAL ASH COPC DETERMINATION CAPE FEAR STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS,LLC, MONCURE, NC Constituent Coal Ash > EPA Soil RSL(') Coal Ash Pore Water Conc.> NC 2L(2) Coal Ash COPC Basis For Coal Ash COPC Determination Aluminum Yes Not Established Yes Above soil RSL Antimony Yes Yes Yes Above soil RSL and groundwater 2L Arsenic Yes Yes Yes Above soil RSL and groundwater 2L Barium Yes No No Below groundwater 2L Beryllium Yes Yes Yes Above soil RSL and groundwater 2L Boron No Yes Yes Above groundwater 2L Cadmium No Yes Yes Above groundwater 2L Calcium Not Established Not Established No Note 3 Chloride Not Established No No Below groundwater 2L Chromium [Cr(III)/Cr(VI)] No Yes Yes Above groundwater 2L Cobalt Yes Yes Yes Above soil RSL and groundwater 2L Copper Yes No No Below groundwater 2L Iron Yes Yes Yes Above soil RSL and groundwater 2L Lead Yes No No Below groundwater 2L Magnesium Not Established Not Established No Note 3 Manganese Yes Yes Yes Above soil RSL and groundwater 2L Mercury Yes No No jBelow groundwater 2L Molybdenum Yes Not Established Yes jAbove soil RSL Nickel No Yes Yes jAbove groundwater 2L Nitrate (as N) Not Established No No Below groundwater 2L Potassium Not Established Not Established No Note 3 Selenium Yes No No Below groundwater 2L Sodium Not Established Not Established No Note 3 Strontium No Not Established No Below soil RSL Sulfate Not Established Yes Yes jAbove groundwater 2L Thallium Yes Yes Yes Above soil RSL and groundwater 2L TDS Not Established Yes Yes Above groundwater 2L Vanadium Yes Yes Yes Above soil RSL and groundwater 2L Zinc No Yes Yes Above groundwater 2L Prepared by: KDF Checked by: VTV Notes: Constituent is a coal ash COPC Constituent is not a coal ash COPC Note 1: See Table 7-3 Note 2: See Tables 7-8 and 12-1 Note 3: Naturally occurring at moderate concentrations in most water bearing units, present at moderate concentrations in many foods and available in dietary supplements. Unlikely to pose potentially unacceptable risk to human health when compared to other P:\Duke Energy Progress. 1026\103. Cape Fear Ash Basin GW Assessment\1.11 CSA Reporting\Tables\Table 12-2 Coal Ash COPCS.xlsx Page 1 of 1 TABLE 12-3 RISK SCREENING TABLE: BACKGROUND GROUNDWATER DATA CAPE FEAR STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, MONCURE, NC Analytical Parameter Redox As PH Water Level Temp Spec Cond DO ORP Turbidity Ferrous Iron Alkalinity Aluminum Antimony Arsenic Barium Beryllium gi- carbonate Alkalinity Boron Cadmium Calcium Carbonate Alkalinity Chloride Chromium Cr(III)/Cr(VI) Cobalt Copper DIS TOT DIS TO DIS TOT DIS TOT DIS TOT DIS TOT DIS TOT TOT DIS TOT DIS TOT DIS TOT Reporting Units None S.U. ft Deg C u/cros mg/I mV NTU mg/I mg/I ug/I ug/I ug/I ug/1 ug/I ug/I ug/I ug/1 ug/I ug/I mg/1 ug/I ug/I ug/I ug/I mg/I mg/l mg/1 ug/I ug/I ug/I ug/1 mg/I mg/1 SSA NCAC 02L Standard NE 6.5-8.5 NE NE NE NE NE NE NE NE NE NE NE 1* NE 10 NE 700 NE 4* NE NE 700 NE 2 NE NE 250 NE 10 NE 1* NE 1 Sample ID Sample Collection Date Field Parameters Analytical Results SURFICIAL BGMW-04 03/04/2015 NM 5.9 14.49 14 189 1.33 70 8.11 NM NA NA 462 NA <1 NA <1 NA 31 NA NA NA NA <50 NA <1 NA NA 8.3 NA <5 NA NA NA 0.007 BGMW-04 06/08/2015 NM 5.7 16.20 18 188 1 97 9.85 NM 31.9 NA 3970 NA <1 NA <1 NA 91 NA <1 31.9 NA 482 NA <1 11.1 <5 9.3 NA <5 NA <1 NA <0.005 MW-15SU 05/29/2015 NM 4.6 10.47 24 2530 2.22 371 4.1 NM 11 NA 6850 NA <1 NA 2.47 NA 29 NA 10 11 NA <50 NA 1.21 147 <10 51 NA 3.39 NA 387 NA 0.0307 MW-15SL 05/29/2015 Anoxic 6.0 10.58 18 329 0.1 116 4.97 NM 47 58 76 <1 <1 2.37 2.4 76 76 <1 <1 47 <50 <50 <1 <1 10 <10 6.3 <1 <1 19.8 21.1 <0.001 <0.001 MW-15SL 06/30/2015 Anoxic 6.1 10.44 19 282 0.3 -61 5.26 4.5 58 71 161 <1 <1 1.77 1.91 67 69 <1 <1 58 <50 <50 <1 <1 7.21 <10 7.6 <1 <1 12 12.3 <0.001 <0.001 MW-16S1l,'l 05/20/2015 Anoxic 6.2 2.19 17 978 16.6 111 4.26 NM 84 <5 110 <1 <1 <1 <1 159 160 <1 <1 84 217 140 <1 <1 59.9 <10 210 <1 <1 5.31 3.52 <0.001 <0.001 MW-16S DUP 05/20/2015 Anoxic 6.2 2.19 17 978 16.6 111 4.26 NM 83 <5 64 <1 <1 <1 <1 156 162 <1 11 83 202 140 <1 <1 59.7 <10 200 <1 <1 5.19 3.9 <0.001 <0.001 BEDROCK BGTMW-04 03/04/2015 NM 7.7 15A2 14 321 0.8 48 0.46 NM NA NA 11 NA <1 NA <1 NA 128 NA NA NA NA <50 NA <1 NA NA 17 NA <5 NA NA NA <0.005 BGTMW-04 06/08/2015 NM 8.1 16.63 20 310 2.3 -43 2.54 NM 122 NA 44 NA <1 NA 3.05 NA 129 NA <1 122 NA <50 NA <1 28.5 <5 16 NA <5 NA <1 NA <0.005 MW-0911,2l 06/30/2015 Anoxic 5.7 14.20 21 1049 0.23 101 3.21 1.5 83 6 16 <1 <1 <1 <1 80 76 <1 <1 82 <50 <50 <1 <1 68.9 <10 240 <1 <1 4.56 6.7 <0.001 <0.001 MW-09BRIt,zi 05/30/2015 Mixed (anoxic) 7.7 17.46 19 706 0.12 -238 2.1 NM 160 82 138 <1 <1 <1 <1 416 420 <1 <1 160 <50 <50 <1 <1 60.3 <10 120 <1 <1 <1 <1 <0.001 <0.001 MW-15BR 06/01/2015 NM 8.2 10.87 21 410 1.52 -71 4.75 NM 150 51 7 <5 <1 6.44 6.76 424 429 <5 <1 150 <50 <50 <5 <1 34.4 <10 NA <5 <1 <5 <1 <0.005 <0.001 MW-15BR 06/30/2015 Mixed (oxic-anoxic) 7.9 9.62 18 431 0.52 137 2.32 0 130 15 30 <1 <1 6.6 6.07 369 398 <1 <1 130 <50 <50 <1 <1 31.9 <10 13 <1 <1 <1 <1 <0.001 <0.001 MW-16BRl1'2l 05/20/2015 Mixed (anoxic) 7.7 53.91 16 589 0.17 -149 4.83 NM 180 6 118 <1 <1 2.59 2.5 352 360 <1 <1 170 51 51 <1 <1 41.1 <10 37 <1 <1 <1 <1 <0.001 0.0025 Detections/Samples --- --- --- --- --- --- --- --- --- 12/12 7/9 14/14 0/9 0/14 5/9 7/14 9/9 14/14 0/9 1/12 12/12 3/9 4/14 0/9 1/14 12/14 0/12 13/13 0/9 1/14 5/9 6/12 0/9 3/14 Average Background Concentrations (Detections Only) ___ ___ ___ ___ ___ ___ ___ ___ --- 87.7 36 804 --- --- 3.30 3.15 210 171 --- 10 87 118 163 --- 1.21 43.1 --- 67 --- 3.39 7.8 62 --- 0.010 Maximum Concentration --- --- --- --- --- --- --- --- --- 180.0 82 6850 --- --- 6.60 6.76 424 429 --- 10 170 217 482 --- 1.21 147.0 --- 240 --- 3.39 19.8 387 --- 0.031 Number of Backgroundwater Samples that are Greater Than NCAC 2L --- --- --- --- --- --- --- --- --- 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 6 0 0 Notes: 0- Bold highlighted concentration indicates exceedance of the 15A NCAC 02L, Appendix 2, April 1, 2013. ORP = Oxidation Reduction Potential mg/I = milligrams per liter ug/I = microgram per liter DIS = Dissolved mg-N/L = milligram nitrogen per liter umhos/cm = micro mhos per centimeter TOT = Total my = millivolts Spec Cord = Specific Conductance Temp = Temperature NE = Not established NM = Not Measured DO = Dissolved Oxygen NTU = nephelometric turbidity unit ft = feet Deg C = Degree Celsius S.U. = Standard Unit --- = Not applicable < = concentration not detected at or above the reporting limit. NA = Not analyzed * - Interim Maximum Allowable Concentrations (IMACs) of the 15A NCAC 02L Standard, Appendix 1, April, 1, 2013. Note 1: Hexavalent chromium concentration is less than EPA screening value for tapwater (0.035 ug/L). See Table 10-3 (USEPA Regional Screening Levels [RSLs] rev., June 26, 2015) Note 2: Sampling for hexavalent chromium was conducted independent of site assessment sampling. Prepared by: BE MAH Checked by: VTV P:\Duke Energy Progress.1026\503. Cape Fear Ash Basin GW Assessment\3.11 CSA Reporting\Tables\Table 12-3 Background Wells GW Results.xlsx page 1 of 2 TABLE 12-3 RISK SCREENING TABLE: BACKGROUND GROUNDWATER DATA CAPE FEAR STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, MONCURE, NC Analytical Parameter Iron Lead Magnesium Manganese Mercury Methane Molybdenum Nickel Nitrate (as N) Potassium Selenium Sodium Strontium Sulfate Sulfide Thallium Total Dissolved Solids Total Organic Carbon Total Suspended Solids Vanadium Zinc DIS TOT DIS TOT TOT DIS TOT DIS TOT DIS TOT DIS TOT TOT DIS TOT TOT DIS TOT DIS TOT DIS TOT DIS TOT Reporting Units ug/I ug/I ug/I ug/I mg/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I mg-N/L mg/I ug/I ug/I mg/I mg/I mg/I mg/I mg/I ug/I ug/I mg/I mg/I mg/I ug/I ug/I mg/I mg/I 15A NCAC 02L Standard NE 300 NE 15 NE NE So NE 1 NE NE NE NE 100 30 NE NE 20 NE NE NE 250 NE NE 0.2* Soo NE NE NE 0.3- NE 1 Sample ID Sample Collection Date Analytical Results UPPER SURFICIAL BGMW-04 03/04/2015 NA 360 NA <1 NA NA 11 NA <0.05 NA NA NA NA <5 NA NA NA <1 NA NA NA 25 NA NA <0.2 140 NA NA NA NA NA <0.005 BGMW-04 06/08/2015 NA 3810 NA 1.22 7.11 NA 49 NA <0.05 NA NA <1 NA <5 3.5 0.339 NA <1 18.1 NA NA 26 NA NA <0.2 150 NA <5 NA NA NA 0.007 MW-15SU 05/29/2015 NA 2490 NA 2.48 82.3 NA 33700 NA <0.05 <10 NA <1 NA ISO 0.623 0.623 NA 1.45 293 NA 1.27 1600 <1 NA 0.218 NA 7.4 NA NA 4.57 NA 0.288 MW-15SL 05/29/2015 45000 45500 <1 <1 3.62 4600 4560 <0.05 <0.05 11 <1 <1 1.53 1.69 0.018 1.57 <1 <1 15.6 0.132 0.133 80 <0.1 <0.2 <0.2 210 1.3 27 <0.3 <0.3 0.005 <0.005 MW-15SL 06/30/2015 37300 38400 <1 <1 2.88 3800 3860 <0.05 <0.05 <10 <1 <1 <1 <1 0.026 1.42 <1 <1 15.5 0.113 0.114 52 <0.1 <0.2 <0.2 190 1.2 30 <0.3 0.383 <0.005 <0.005 MW-16SI','l 05/20/2015 35 93 <1 <1 26 319 202 <0.05 <0.05 <10 <1 <1 5.14 3.14 0.018 0.992 <1 <1 83.1 0.428 0.624 44 <0.1 <0.2 <0.2 630 0.706 <5 0.954 1.1 0.005 <0.005 MW-16S DUP 05/20/2015 33 72 <1 11 26 305 207 <0.05 <0.05 110 <1 <1 4.59 2.95 1 0.015 0.943 <1 <1 82.2 0.41 0.627 44 10.1 <0.2 <0.2 620 0.747 <5 0.827 1.05 <0.005 <0.005 BEDROCK BGTMW-04 03/04/2015 NA 111 NA <1 NA NA 172 NA <0.05 NA NA NA NA <5 NA NA NA <1 NA NA NA 5.7 NA NA <0.2 180 NA NA NA NA NA <0.005 BGTMW-04 06/08/2015 NA 57 NA <1 8.14 NA 59 NA <0.05 NA NA 4.22 NA <5 0.05 2.28 NA <1 22.1 NA NA 8.1 NA NA <0.2 180 NA <5 NA NA NA <0.005 MW-0911'2l 06/30/2015 1130 1800 <1 <1 30.3 792 826 <0.05 <0.05 25 <1 <1 2.21 1.8 <0.01 0.962 <1 <1 61.4 0.506 0.538 41 <0.1 <0.2 <0.2 660 1.3 <5 <0.3 <0.3 0.01 0.01 MW-09BRIt,2i 05/30/2015 268 441 <1 <1 24.1 805 829 <0.05 <0.05 <10 <1 <1 <1 <1 <0.01 2.1 <1 <1 37.2 0.68 0,677 7.9 <0.1 <0.2 <0.2 410 0.517 5 <0.3 <0.3 0.017 <0.005 MW-15BR 06/01/2015 <10 <10 <5 <1 8.49 72 72 <0.05 <0.05 14 16.9 17 <5 <1 NA 1.48 <5 2.02 36.7 0.498 0.501 NA <0.1 <1 <0.2 NA NA NA 1.81 1.73 <0.005 <0.005 MW-15BR 06/30/2015 15 31 <1 <1 8.24 65 69 <0.05 <0.05 <10 11.8 11.5 <1 <1 2.7 1.69 1.95 1.98 42.9 0.469 0.493 37 <0.1 <0.2 <0.2 260 0.371 <5 2 1.82 <0.005 <0.005 MW-1680,2I 05/20/2015 187 329 <1 <1 13.9 332 326 <0.05 <0.05 11 2.89 2.97 <1 <1 <0.01 2.49 <1 <1 57.3 0.494 0.505 41 <0.1 <0.2 <0.2 340 0.892 <5 <0.3 <0.3 <0.005 <0.005 Detections/Samples 8/9 13/14 0/9 2/14 12/12 9/9 14/14 0/9 0/14 4/10 3/10 4/12 4/9 5/14 8/11 12/12 1/9 3/14 12/12 9/9 10/10 13/13 0/10 0/9 1/14 12/12 9/9 3/10 4/10 6/10 4/9 3/14 Average Background Concentrations (Detections Only) 9330 6678 --- 1.85 18.5 1109 2996 --- --- 12 10.5 8.9 3.36 31.9 0.87 1.41 1.95 1.82 63.8 0.418 0.548 154.7 --- --- 0.218 330 1.60 15.5 1.40 1.78 0.009 0.102 Maximum Concentration 45000 45500 --- 2.48 82.3 4600 33700 --- --- 25 16.9 17.0 5.14 ISO 3.50 2.49 1.95 2.02 293.0 0.680 1.27 1600 --- --- 0.218 660 7.40 30.0 2.00 4.57 0.017 0.288 Number of Backgroundwater Samples that are Greater Than NCAC 2L 0 8 0 0 0 0 12 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 0 0 1 3 0 0 0 6 0 0 Notes: 0 - Bold highlighted concentration indicates exceedance of the 15A NCAC 02L, Appendix 2, April 1, 2013 ORP = Oxidation Reduction Potential mg/I = milligrams per liter ug/I = microgram per liter DIS = Dissolved mg-N/L = milligram nitrogen per liter umhos/cm = micro mhos per centimeter TOT = Total my = millivolts Spec Cord = Specific Conductance Temp = Temperature NE = Not established NM = Not Measured DO = Dissolved Oxygen NTU = nephelometric turbidity unit ft = feet Deg C = Degree Celsius S.U. = Standard Unit --- = Not applicable < = concentration not detected at or above the reporting limit. NA = Not analyzed * - Interim Maximum Allowable Concentrations (IMACs) of the 15A NCAC 02L Standard, Appendix 1, April, 1, 2013. Note 1: Hexavalent Chromium concentration is less than EPA screening value for tapwater (0.035 ug/L). See Table 10-3 (USEPA Regional Screening Levels [RSLs] rev., June 26, 2015) Note 2: Sampling for hexavalent chromium was conducted independent of site assessment sampling. Prepared by: BE MAH Checked by: VTV P:\Duke Energy Progress.1026\503. Cape Fear Ash Basin GW Assessment\3.11 CSA Reporting\Tables\Table 12-3 Background Wells GW Results.xlsx page 2 of 2 TABLE 12-4 RISK SCREENING TABLE: SURFICIAL GROUNDWATER DATA CAPE FEAR STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, MONCURE, NC Analytical Parameter Redox Assignment PH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Alkalinity Aluminum Antimony Arsenic Barium Beryllium gi- carbonate Alkalinity ron CadE2' Calcium Carbonate Alkalinity Chloride Chromium Cr(III)/Cr(VI) Cobalt Copper Iron DIS TOT DIS TOT DIS TOT DIS TOT DIS TOT jDI;S, TOT DIS TOT DIS TOT Reporting Units None S.U. ft Deg C u��rOSmg/I mV mV NTU mg/I mg/1 ug/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I mg/I ug/I ug/Img/I mg/I mg/1 ug/I ug/I ug/I ug/I mg/I mg/I ug/I ug/I 15A NCAC 02L Standard NE 6.5-8.5 NE NE NE NE NE NE NE NE NE NE NE NE 1* NE SO NE 700 NE 4* NE 700 NE NE NE 250 NE SO NE 1* NE 1 NE 300 Sample ID Sample Collection Date Field Parameters Analytical Results ABMW-015I4,5l 05/08/2015 Suboxic 11.2 27.41 27 788 0.35 -133 72 0.91 NM 100 602 720 1.67 1.85 28.5 27.7 90 94 <1 <1 55 2970 2930 <1 <1 94 41 20 <1 <1 <1 <1 <0.001 <0.001 <10 14 ABMW-02SLI4,al 05/20/2015 Anoxic 6.2 9.16 17 1785 0.37 32 237 3.69 NM 39 8 69 <1 <1 1.18 <1 14 15 <1 <1 39 <50 <50 <1 <1 8.72 <10 6.6 <1 <10 4.17 <1 <0.001 <0.01 3260 3450 ABMW-02SUI4''i 05/20/2015 Mixed (oxic-anoxic) 3.8 8.75 20 765 6.03 143 348 4.24 NM <10 1980 2090 <1 <1 <1 <1 27 28 <1 <1 <10 200 198 <1 <1 21 <10 39 <1 <1 18 19 0.0024 0.0024 16800 15900 ABMW-03SI4.31 05/27/2015 Oxic 11.7 17.54 21 3186 1.22 -39 166 0.86 NM 600 549 537 <1 <1 <1 1.09 643 638 <1 <1 <10 206 205 <1 <1 236 280 18 7.96 8.68 <1 <1 0.0078 0.0089 <10 21 ABMW-04SI4'si 05/14/2015 Anoxic 6.2 19.53 18 413 0.24 -75 130 2.67 NM 120 23 43 <1 <1 1.55 1.62 66 94 <1 <1 120 <50 <50 <1 <1 26.8 <10 23 <1 <1 1 1.02 <0.001 <0.001 18000 18000 ABMW-05S(4•11 06/02/2015 Anoxic 6.0 24.75 18 1991 0.33 -133 72 3.16 1 NM 110 167 225 <1 <1 <1 <1 55 61 <1 <1 110 177 187 1.05 <1 236 <10 25 <1 <1 326 327 <0.001 <0.001 96800 99600 ABMW-05S DUP 06/02/2015 Anoxic 6.0 24.75 1 18 1 1991 0.33 1 -133 72 3.16 NM 110 173 222 <1 I <1 <1 <1 58 61 <1 <1 110 1 184 187 1,06 1 <1 231 1 <10 25 1 <1 <1 1 349 325 <0.001 <0.001 99300 103000 CMW-01 03/04/2015 NM 6.1 5.80 16 400 0.08 -54 151 13.2 NM NA NA 176 NA <1 NA <1 NA 156 NA NA NA NA 1380 NA <1 NA NA 29 NA <5 NA NA NA <0.005 NA 28700 CMW_01(4,$) 06/09/2015 NM 6.2 8.26 20 517 0.16 -189 16 8.84 NM 178 NA 299 NA <1 NA <1 NA 229 NA <1 178 NA 1830 NA <1 25 <5 16 NA <5 NA <1 NA <0.005 NA 52700 CMW-02 03/04/2015 NM 5.3 8.70 13 965 0.32 224 429 9.08 NM NA NA 38 NA <1 NA <1 NA 20 NA NA NA NA 71 NA <1 NA NA 20 NA <5 NA NA NA <0.005 NA 792 CMW-02 06/09/2015 NM 5.3 10.52 19 947 0.57 -43 162 1.9 NM 23.9 NA 32 NA <1 NA <1 NA 23 NA <1 23.9 NA 78 NA <1 108 <5 28 NA <5 NA 1.82 NA <0.005 NA 796 CMW-02 06/17/2015 NM 5.3 10.96 19 974 0.4 -58 147 323 NM NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA CMW-03 03/04/2015 NM 6.2 14.70 1 12 1 851 0.82 74 279 2.51 NM NA NA 32 NA <1 NA <1 NA 53 NA NA NA NA 969 NA <1 NA NA 34 NA <5 NA NA NA <0.005 NA 129 CMW-03 06/09/2015 NM 6.1 14.98 19 442 2.74 31 236 1.54 NM 61.2 NA 50 NA <1 NA <1 NA 55 NA <1 61.2 NA 653 NA <1 45.9 <5 36 NA <5 NA <1 NA <0.005 NA 55 CMW-05 03/04/2015 NM 6.1 11.90 15 230 3.77 89 294 35.6 NM NA NA 2970 NA <1 NA <1 NA 72 NA NA NA NA 359 NA <1 NA NA 10 NA <5 NA NA NA 0.005 NA 2650 CMW-05 06/09/2015 NM 5.9 15.11 20 201 3.32 -14 191 47.6 NM 28.1 NA 154 NA <1 NA <1 NA 32 NA <1 28.1 NA <50 NA <1 2.59 <5 8.8 NA <5 NA <1 NA <0.005 NA 99 CMW-06 03/04/2015 NM 6.2 4.09 15 462 0.26 9 214 44.4 NM NA NA 4380 NA <1 NA <1 NA 21 NA NA NA NA 413 NA <1 NA NA 23 NA <5 NA NA NA 0.008 NA 5050 CMW-06"") 06/09/2015 NM 6.7 4.94 18 623 0.3 -189 16 6.27 NM 61.2 NA 388 NA <1 NA <1 NA 18 NA <1 61.2 NA 1560 NA <1 9.5 <5 16 NA <5 NA 1.14 NA <0.005 NA 556 CMW-07 03/04/2015 NM 5.1 21.62 1 17 1 67 0.16 1 139 344 1 29 NM NA NA 1110 NA <1 NA <1 NA 59 NA NA NA NA <50 NA <1 NA NA 3.2 NA <5 NA NA NA <0.005 NA 2460 CMW-07 06/09/2015 NM 5.6 23.54 19 282 0.38 -131 75 9.1 NM 28.3 NA 415 NA <1 NA 1.1 NA 162 NA <1 28.3 NA 98 NA <1 9.57 <5 22 NA <5 NA 16.5 NA <0.005 NA 10300 CMW-08 03/04/2015 NM 6.4 6.68 15 724 0.16 -84 122 63.7 NM NA NA 126 NA <1 NA <1 NA 221 NA NA NA NA 1250 NA <1 NA NA 14 NA <5 NA NA NA <0.005 NA 49200 CMW-08"") 06/09/2015 NM 6.3 8.92 23 694 0.29 -85 120 22 NM 163 NA 131 NA <1 NA <1 NA 209 NA <1 163 NA 1300 NA <1 38.4 <5 14 NA <5 NA 3.89 NA <0.005 NA 41800 MW-1014'si 07/01/2015 Anoxic 5.8 13.36 18 1360 0.28 -114 91 3.01 2 120 8 27 <1 <1 <1 I <1 28 29 <1 <1 120 692 922 <1 <1 158 <10 23 <1 <1 19.8 21 <0.001 <0.001 2540 2800 MW-11 07/01/2015 Anoxic 6.2 13.34 21 815 0.18 -148 57 4.65 2 160 6 76 <1 <1 <1 <1 58 59 <1 <1 1 160 <50 <50 <1 <1 53.5 <10 22 <1 <1 <1 1 1.03 1 <0.001 <0.001 2750 3810 MW-12(4,$) 06/30/2015 Mixed (anoxic) 6.7 12.46 22 1 12 0.24 1 -165 1 41 2.1 0.5 210 <5 <5 <1 <1 <1 <1 54 55 <1 <1 210 465 448 <1 <1 35.3 <10 59 <1 <1 2.64 2.43 <0.001 <0.001 414 456 MW-13 06/29/2015 Mixed (anoxic) 5.8 11.64 18 432 0.33 136 341 2.88 0.5 60 14 206 <3 <1 <1 <1 84 102 <3 <1 60 223 319 <1 <1 24.1 <10 28 <1 <1 1.2 1.46 0.0018 <0.001 127 248 MW-17SL""i 03/19/2015 Anoxic 6.0 7.23 14 1189 0.29 -50 155 4.76 6.5 83 203 525 <1 <1 <1 <1 118 126 <1 <1 83 <50 <50 <1 <1 80.9 <10 17 <1 <1 6.3 6.76 <0.001 <0.001 174000 175000 MW-17SU13,5) 03/19/2015 Mixed (anoxic) 5.0 8.15 13 1129 0.33 63 268 4.46 2.5 11 566 607 <1 <1 <1 <1 43 42 1.21 1.3 it <50 <50 <1 <1 110 <10 38 <1 <1 247 241 0.0027 0.0024 2560 2620 MW-18S 06/03/2015 Mixed (oxic-anoxic) 7.1 5.00 17 725 1.68 -10 195 2.99 NM 100 <5 325 <1 <1 <1 I <1 8 1 10 1 <1 <1 100 173 1 180 <1 <1 10.5 <10 29 <1 <1 <1 <1 0.0082 <0.001 <10 288 MW-195 03/11/2015 Oxic 5.3 4.50 15 66 7.05 164 369 19.6 0 <10 55 998 <1 <1 <1 <1 34 47 <1 <1 <10 <50 <50 <1 <1 1.29 <10 15 <1 <1 <1 <1 I <0.001 <0.001 16 486 MW-20514'si 05/21/2015 Anoxic 6.3 9.86 1 16 1 474 0.14 1 -24 181 1 4.98 1 NM 130 11 190 <1 <1 <1 <1 164 163 <1 <1 130 <50 <50 <1 <1 29.4 <10 29 <1 <1 <1 <1 <0.001 <0.001 4040 4270 MW-21SLI3.3i 05/07/2015 Mixed (anoxic) 5.7 10.03 17 1476 0.22 80 285 1.24 NM 63 9 38 <1 <1 <1 <1 39 30 <1 <1 63 57 60 <1 <1 170 <10 23 <1 <1 15.7 18.7 <0.001 <0.001 580 731 MW-21SUi3's1 05/07/2015 Mixed (oxic-anoxic) 4.1 10.21 22 497 3.96 155 360 2.51 NM <10 8070 8180 <1 <1 1.92 4.15 26 27 9.89 8.94 <10 <50 <50 <1 <1 37.7 <10 5.5 <1 <1 173 180 0.0238 0.022 65 181 PZ-01 08/06/2015 Anoxic 6.1 4.88 22 881 0.15 -35 170 8.1 NM 160 22 62 <3 <1 <1 <1 28 30 <1 <1 160 620 650 <1 <1 57.5 <10 19 <1 <1 4.57 4.35 <0.001 <0.001 13500 14700 PZ-02 08/06/2015 Mixed (anoxic) 6.3 6.33 21 632 0.33 55 260 4.08 NM 71 14 167 <1 I <1 <1 <1 1 50 53 1 <1 <1 71 3670 3810 <1 <1 30.5 <10 19 <1 <1 7.7 8.24 0.0083 0.0014 678 1140 PZ-02 DUP 08/06/2015 Mixed (anoxic) 6.3 6.33 21 632 0.33 55 260 4.08 NM 72 9 76 <1 <1 <1 <1 50 53 <1 <1 72 3680 3830 1 <1 <1 30.3 <10 19 <1 <1 7.9 7.8 0.0023 0.0013 687 763 PZ-03S 08/05/2015 Anoxic 7.4 5.84 1 23 1 918 0.16 1 67 272 1 4.96 1 NM 170 <5 275 <1 <1 <1 <1 13 15 <1 <1 170 2440 2440 <1 <1 20.6 <10 67 <1 <1 <1 <1 1 0.009 1 <0.001 15 255 PZ-04 08/05/2015 Anoxic 6.4 9.33 22 747 0.34 -85 120 4.96 NM 130 <5 87 <1 <1 <1 <1 35 36 <1 <1 130 1460 1440 <1 <1 33.9 <10 55 <1 <1 1.3 1.31 0.0019 <0.001 1080 1290 PZ-05 08/05/2015 Mixed (oxic-anoxic) 5.4 2.13 24 692 0.68 214 419 4.1 NM 28 8 87 <1 <1 <1 <1 25 26 <1 <1 28 4770 4910 11 <1 36.5 <10 28 <1 <1 7.67 8.24 0.0083 <0.001 75 200 PZ-09 08/06/2015 Mixed (anoxic) 4.6 12.10 19 358 0.2 370 575 13 NM <10 349 1110 <1 <1 <1 I <1 41 44 <1 <1 <10 86 103 <1 <1 18.4 <10 29 1.5 1.91 27.3 28.4 0.0063 0.0069 18 1170 DETECTIONS/SAMPLES --- --- --- --- --- --- --- --- --- --- 28/33 21/25 38/39 1/25 1/39 4/25 5/39 25/25 39/39 2/25 2/32 27/32 17/25 29/39 2/25 0/39 32/32 2/32 39/39 2/25 2/39 18/25 22/32 21/40 9/39 22/25 39/39 AVERAGE SURFICIAL WATER CONCENTRATION (DETECTIONS ONLY) --- --- --- --- --- --- --- --- --- --- 114.0 611.7 716.9 1.7 1.9 8.29 7.13 74.8 83.8 5.55 5.1 94.3 1,310.2 1,130.3 1.1 --- 63.5 160.5 24.1 4.7 1.3 67.8 55.7 0.0069 0.0065 19,11711.4 16,555.9 MAXIMUM SURFICIAL WATER GROUNDWATER CONCENTRATION ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ 600.0 8,070.0 8,180.0 1.7 1.9 28.50 27.70 643.0 638.0 9.89 8.9 210.0 4,770.0 4,910.0 1.1 --- 236.0 280.0 67.0 8.0 8.7 349.0 327.0 0.0238 0.0220 174,000.0 175,000.0 NUMBER OF SURFICIAL WATER SAMPLES EXCEEDING 21---- --- --- --- --- --- 0 0 0 0 I 1 0 1 0 0 0 1 0 0 13 0 0 0 0 0 0 0 0 22 0 0 0 29 P:\Duke Energy Progress.1026\103. Cape Fear Ash Basin GW Assessment\1.11 CSA Reporting\Tables\Table 12-4 Surficial GW Results KDF.xlsx Page 1 of 4 TABLE 12-4 RISK SCREENING TABLE: SURFICIAL GROUNDWATER DATA CAPE FEAR STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, MONCURE, NC Water Ferrous Aluminum Antimony Arsenic Barium Beryllium gi- ron CadmE2/ Calcium Carbonate Chromium Cobalt Copper Iron Analytical Parameter Redox Assignment PH Temp Spec Cond DO ORP Eh Turbidity Alkalinity carbonate Chloride E.r(III)/Cr(VI) Level Iron Alkalinity Alkalinity DIS TOT DIS TOT DIS TOT DIS TOT DIS TOT jDI;S, TOT DIS TOT DIS TOT Reporting Units None S.U. ft Deg C o. u/cmmg/I my mV NTU mg/I mg/1 ug/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I mg/I ug/I ug/Img/I mg/I mg/1 ug/I ug/I ug/I ug/I mg/I mg/I ug/I ug/I SSA NCAC 02L Standard NE 6.S-8.5 NE NE NE NE NE NE NE NE NE NE NE NE 1* NE SO NE 700 NE 4* NE 700 NE NE NE 2S0 NE SO NE 1* NE 1 NE 300 Sample ID Sample Field Parameters Analytical Results Collection Date Detections/Samples --- --- --- --- --- --- --- --- --- 12/14 7/9 14/14 0/9 0/14 5/9 7/14 9/9 14/14 0/9 1/12 12/12 3/9 4/14 0/9 1/14 12/14 0/12 13/13 0/9 1/14 5/9 6/12 0/9 3/14 8/9 13/14 Average Background Concentrations (Detections Only) ___ ___ ___ ___ ___ ___ ___ ___ ___ 87.7 36 804 --- --- 3.30 3.15 210 171 --- 10 87 118 163 --- 1.21 43.1 --- 67 --- 3.39 7.8 62 --- 0.010 9330 6678 Maximum Concentration --- --- --- --- --- --- --- --- --- 180.0 82 68SO --- --- 6.60 6.76 424 429 --- SO 170 217 482 --- 1.21 147.0 --- 240 --- 3.39 19.8 387 --- 0.031 45000 45500 Number of Backgroundwater Samples that are Greater Than --- --- --- --- --- --- --- --- --- 0 O O 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 6 0 O O 8 NCAC 2L Notes: - Analytical method detection limit is greater than 15A NCAC 02L groundwater criteria - Bold highlighted concentration Indicates exceedance of the 15A NCAC 02L Appendix 2, April 1, 2013. - Indicates support/rationale for soil COPC attributable to coal ash. _ - Indicates constituent is not a soil COPC attributable to coal ash. ORP = Oxidation Reduction Potential my = millivolts DIS = Dissolved NE = Not established TOT = Total Temp = Temperature NTUS = nephelometric turbidity unit S.U. = Standard Unit DO = Dissolved Oxygen ug/I = microgram per liter Deg C = Degree Celsius umhos/cm = micro siemens per centimeter mg/I = milligrams per liter Spec Cord = Specific Conductance mg-N/L = miligram nitrogen per liter ft = feet < = concentration not detected at or above the reporting limit. * - Interim Maximum Allowable Concentrations (IMACs) of the 15A NCAC 02L Appendix 1, April, 1, 2013. --- = Not applicable Coal Ash CC NCAC Surficial Aquifer Water conc. > NCAC Surficial Aquifer CC Note 1: Consitituent is retained as a COPC if analytical method detection limit or concentration is greater than the groundwater criteria Note 2: Constituent is retained as a COPC if no groundwater criteria Note 3: Hexavalent Chromium concentration is greater than EPA screening value for tapwater (0.035 ug/L). See Table 10-3 (USEPA Regional Screening Levels [RSLs] rev., June 26, 2015) Note 4: Hexavalent Chromium concentration is less than EPA screening value for tapwater (0.035 ug/L). See Table 30-3 (USEPA Regional Screening Levels [RSLs] rev., June 26, 2015) Note 5: Speciation Sample date does not match listed sample collection date P:\Duke Energy Progress.1026\103. Cape Fear Ash Basin GW Assessment\l.11 CSA Reporting\Tables\Table 12-4 Surficial GW Results KDF.xlsx Page 2 of 4 TABLE 12-4 RISK SCREENING TABLE: SURFICIAL GROUNDWATER DATA CAPE FEAR STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, MONCURE, NC Analytical Parameter Lead Magnesium Manganese Mercury Methane Molybdenum Nickel Nitrate (as N) Potassium Selenium Sodium Strontium Sulfate Sulfide Thallium Total Dissolved Solids Total Organic Carbon Total Suspended Solids Vanadium Zinc DIS TOT TOT DIS TOT DIS TOT DIS I TOT DIS TOT TOT DIS TOT TOT DIS TOT DIS TOT DIS TOT DIS TOT Reporting Units ug/I ug/I mg/I ug/I ug/l ug/l ug/I ug/l ug/l ug/I ug/I ug/l mg-N/L mg/l ug/l ug/l mg/l mg/1 mg/I mg/I mg/I ug/I ug/I mg/I m9/1 mg/I ug/I ug/1 mg/I mg/I 15A NCAC 02L Standard NE 15 NE NE 50 NE 1 NE NE NE NE 100 10 NE NE 20 NE NE NE 250 NE NE 0.2* Soo NE NE NE 0.3* NE 1 Sample ID Sample Collection Date Analytical Results ABMW-OIS1"'si 05/08/2015 <1 <1 1.51 <5 <5 <0.05 <0.05 <10 1230 1240 4.26 4.5 <0.01 5.53 3.86 3.4 22.1 0.644 0.655 130 <0.1 <0.2 <0.2 360 1.8 <5 63.1 73.3 <0.005 <0.005 ABMW-02SLI4,3i 05/20/2015 <1 <10 4.25 493 519 <0.05 <0.05 <10 <1 <10 6.83 QO 0.271 1.09 <1 <10 9.47 0.028 0.03 14 <0.1 <0.2 <0.2 100 0.898 <5 <0.3 <0.3 0.053 0.638 ABMW-02SUi4,1I 05/20/2015 6.16 6.24 8.71 1560 1540 <0.05 <0.05 30 <1 <1 14.4 14.8 0.03 3.66 <1 <1 79.9 0.552 0.549 270 <0.5 <0.2 <0.2 440 2.5 <5 <0.3 <0.3 0.036 0.037 ABMW-03S14•al 05/27/2015 <1 <1 0.072 <5 <5 <0.05 <0.05 160 51 56 4.51 5.72 0,016 43.5 1.39 1.73 67.8 2.12 2.05 58 <0.1 <0.2 0.22 780 6.2 8 2.34 2.53 <0.005 <0.005 ABMW-04SI"'sl 05/14/2015 <1 <1 11.5 1070 1110 <0.05 <0.05 50 1.09 1.27 <1 <1 0.025 0.525 1.47 <1 13.5 0.143 0.153 5 <0A <0.2 <0.2 230 1.7 <5 <0.3 0.328 <0.005 <0.005 ABMW-05514•11 06/02/2015 <1 <1 81.1 31100 32400 <0.05 <0.05 19 1.42 1.69 145 147 0.021 4.35 <1 <1 43.4 1.57 1.7 1400 <0.5 0.365 0.306 1600 1.5 25 <0.3 <0.3 0.256 0.249 ABMW-05S DUP 06/02/2015 1 <1 <1 1 79.3 32000 1 33700 <0.05 <0.05 18 1 1.73 1 1.84 154 1 149 0.021 1 4.42 <1 <1 44 1.63 1.7 1300 <0.2 1 0.369 0.317 1700 1 1.5 22 0.339 <0.3 0.264 0.25 CMW-01 03/04/2015 NA <1 NA NA 1390 NA <0.05 NA NA NA NA 5 NA NA NA <1 NA NA NA 2.1 NA NA <0.2 200 NA NA NA NA NA <0.005 CMW-01(4's) 06/09/2015 NA <1 13.1 NA 1250 NA <0.05 NA NA <1 NA <5 <0.023 0.674 NA <1 24.1 NA NA <0.1 NA NA <0.2 240 NA 45 NA NA NA 0.008 CMW-02 03/04/2015 NA <1 NA NA 6380 NA <0.05 NA NA NA NA 71 NA NA NA <1 NA NA NA 430 NA NA <0.2 770 NA NA NA NA NA 0.017 CMW-02 06/09/2015 NA <1 40.3 NA 6760 NA <0.05 NA NA <1 NA 72 0.05 0.882 NA <1 36.2 NA NA 480 NA NA <0.2 780 NA <5 NA NA NA 0.019 CMW-02 06/17/2015 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA CMW-03 03/04/2015 NA <1 NA NA 3200 NA <0.05 NA NA NA NA <5 NA NA NA 8.9 NA NA NA 170 NA NA <0.2 450 NA NA NA NA NA <0.005 CMW-03 06/09/2015 NA <1 10.3 NA 85 NA <0.05 NA NA <1 NA <5 <0.023 2.6 NA 46.8 19.6 NA NA 87 NA NA <0.2 250 NA <5 NA NA NA <0.005 CMW-05 03/04/2015 NA 1.2 NA NA 34 NA <0.05 NA NA NA NA <5 NA NA NA <1 NA NA NA 43 NA NA <0.2 240 NA NA NA NA NA 0.007 CMW-05 06/09/2015 NA <1 0.991 NA <5 NA <0.05 NA NA <1 NA <5 <0.023 <0.1 NA <1 34.7 NA NA 47 NA NA <0.2 200 NA 35 NA NA NA 0.005 CMW-06 03/04/2015 NA <1 NA NA 908 NA <0.05 NA NA NA NA <5 NA NA NA <1 NA NA NA 110 NA NA <0.2 330 NA NA NA NA NA 0.008 CMW-0614's1 06/09/2015 NA <1 8.52 NA 204 NA <0.05 NA NA <1 NA <5 0.03 0.123 NA <1 107 NA NA 160 NA NA <0.2 380 NA 9 NA NA NA 0.014 CMW-07 03/04/2015 NA <1 NA NA 770 NA <0.05 NA NA NA NA <5 NA NA NA <1 NA NA NA 10 NA NA <0.2 67 NA NA NA NA NA 0.006 CMW-07 06/09/2015 NA <1 6.39 NA 2210 NA <0.05 NA NA <1 NA <5 <0.023 0.503 NA <1 32.4 NA NA 72 NA NA <0.2 180 NA 10 NA NA NA 0.01 CMW-08 03/04/2015 NA <1 NA NA 13400 NA <0.05 NA NA NA NA 6 NA NA NA <1 NA NA NA 130 NA NA <0.2 430 NA NA NA NA NA <0.005 CMW-0814,3i 06/09/2015 NA <1 28.9 NA 13000 NA <0.05 NA NA <1 NA <5 <0.023 0.168 NA <1 38.2 NA NA 47 NA NA <0.2 400 NA 56 NA NA NA <0.005 MW-100") 07/01/2015 <1 <1 50.9 11700 12500 <0.05 <0.05 17 <1 <1 3.49 3.55 <0.01 2.72 <1 <1 34.6 1.4 1.46 610 <0.2 <0.2 <0.2 1100 1 <5 <0.3 0.366 <0.005 1 <0.005 MW-11 07/01/2015 <1 <1 36.9 792 912 <0.05 <0.05 460 <1 <1 4.5 4.23 <0.01 0.486 <1 <1 48.5 0.532 1 0.535 1 200 <0.1 <0.2 I <0.2 550 5.8 5 0.372 0.867 <0.005 <0.005 MW-121"'si 06/30/2015 1 <1 <1 26.5 842 1 843 <0.05 <0.05 11 1.42 1.57 1.28 11 <1 0.09 0.136 <1 <1 165 0.258 0.257 260 <0.2 <0.2 <0.2 740 1.2 <5 <0.3 <0.3 0.008 <0.005 MW-13 06/29/2015 <1 <1 15.1 641 820 <0.05 <0.05 <10 <1 <1 3.41 3.31 0.094 0.145 <1 <1 33.4 0.18 0.223 91 <0.2 <0.2 0.297 270 0.91 <5 0.587 1.07 0.204 0.011 MW-17SL1'''' 03/19/2015 <1 <1 24.4 7060 7380 <0.05 <0.05 520 <1 <1 1.37 1.58 0.031 1.06 <1 <1 41.3 0.381 0.389 570 <1 <0.2 <0.2 900 2.9 49 <0.3 0.919 <0.005 <0.005 MW-175U13•11 03/19/2015 <1 <1 47.1 45700 45500 <0.05 <0.05 630 <1 <1 61 59 <0.01 0.711 <1 <1 45.2 0.847 0.801 710 <1 <0.2 <0.2 910 48 <5 <0.3 0.381 0.381 0.362 MW-18S 06/03/2015 <1 <1 10.4 118 137 <0.05 <0.05 <10 <1 <1 <1 <1 <0.01 <0.1 <1 <1 1 121 0.09 0.093 180 <0.1 <0.2 <0.2 450 0.481 6 0.876 1.63 0.013 <0.005 MW-19S 03/11/2015 <1 <1 1.78 19 27 <0.05 <0.05 <10 <1 <1 <1 <1 <0.01 <0.1 <1 <1 7.09 0.029 0.037 2.6 <2 <0.2 I <0.2 54 0.44 19 <0.3 0.81 <0.005 <0.005 MW-20Si4'sl 05/21/2015 <1 <1 1 19.6 1190 1 1210 <0.05 1 <0.05 1 12 <1 <1 <1 <1 0.029 0.341 <1 <1 38.4 0.266 1 0.263 1 52 <0.2 <0.2 <0.2 320 1.6 9 0.682 1.03 0.006 <0.005 MW-21SL13,11 05/07/2015 <1 <1 91.3 2130 2430 <0.05 <0.05 <10 <1 <1 7.6 7.9 <0.01 0.806 <1 <1 60.9 0.611 0.627 930 <0.5 <0.2 <0.2 1300 0.651 <5 <0.3 0.313 0.018 0.024 MW-215U1'•si 05/07/2015 <1 <1 12.9 9240 9720 <0.05 <0.05 <10 <1 <1 51.2 49.1 4.8 3.39 1.53 1.96 9.27 0.517 0.526 300 <0.1 <0.2 0.335 360 2.2 <5 <0.3 <0.3 0.197 0.191 PZ-01 08/06/2015 <1 <1 42.4 4150 4250 <0.05 <0.05 30 <1 <1 4.93 4.46 0.026 0.513 <1 <1 68.1 0.273 0.273 260 <0.1 0.592 <0.2 650 1.1 14 0.309 0.604 0.047 <0.005 PZ-02 08/06/2015 <1 <1 16.9 2320 2440 <0.05 <0.05 <10 <1 <1 6.23 8.58 0.105 0.447 <1 <1 1 67.5 0.311 0.319 180 <0.1 <0.2 <0.2 430 2.9 <5 1 0.818 1.66 0.049 <0.005 PZ-02 DUP 08/06/2015 <1 <1 16.8 2350 2440 <0.05 <0.05 <10 <1 <1 6.26 6.02 0.55 0.438 <1 <1 67.1 0.316 0.322 180 <0.1 I <0.2 I <0.2 450 3.4 <5 0.873 1.27 0.011 <0.005 PZ-03S 08/05/2015 1.1 <1 1 16.6 131 1 182 <0.05 I <0.05 1 22 1.5 1.48 1 <1 <1 0.032 0.146 <1 <1 142 0.187 0.196 170 <0A <0.2 <0.2 590 0.733 <5 1.26 1.97 0.078 <0.005 PZ-04 08/05/2015 <1 <1 25.3 508 519 <0.05 <0.05 38 <1 <1 3.51 9.7 0.038 0.305 <1 <1 88.1 0.338 0.341 150 <0.1 0.351 <0.2 470 1.9 <5 0.432 0.979 0.019 <0.005 PZ-05 08/05/2015 1.26 <1 31.3 2930 2990 <0.05 <0.05 33 <1 <1 6.39 6.53 <0.01 0.316 <1 <1 58.6 0.351 0.358 270 <0.1 <0.2 <0.2 510 0.684 <5 <0.3 0.535 0.026 0.006 PZ-09 08/06/2015 <1 <1 8.3 580 627 <0.05 <0.05 <10 <1 <1 36.9 41.9 0.802 4.94 91.3 96.1 30.1 0.617 0.671 110 <0.1 0.65 0.574 240 1.1 39 <0.3 0.811 0.105 0.099 DETECTIONS/SAMPLES 3/25 2/39 32/32 23/25 36/40 0/25 0/39 15/25 7/25 7/32 20/25 22/39 19/32 29/32 5/25 6/39 32/32 25/25 25/25 38/39 0/25 5/25 6/39 39/39 25/25 15/32 12/25 19/25 18/25 19/39 AVERAGE SURFICIAL WATER CONCENTRATION (DETECTIONS ONLY) 2.84 3.72 24.7 6,896.7 5,938.5 --- --- 136.7 184.0 186.3 26.4 30.9 0.372 2.928 19.91 26.49 53.1 0.568 0.581 268.2 --- 0.465 0.342 523.6 3.72 23.4 5.999 4.8 0.098 0.103 MAXIMUM SURFICIAL WATER GROUNDWATER CONCENTRATION 6.16 6.24 91.3 45,700.0 45,500.0 --- --- 630.0 1,230.0 1,240.0 154.0 149.0 4.800 43.500 91.30 96.10 165.0 2.120 2.050 1,400.0 --- 0.650 0.574 1,700.0 48.00 56.0 63.100 73.3 0.381 0.638 NUMBER OF SURFICIAL WATER SAMPLES EXCEEDING 2L 0 0 0 0 34 0 0 0 0 0 0 2 0 0 0 1 0 0 0 13 0 0 5 14 0 0 0 19 0 0 P:\Duke Energy Progress.1026\103. Cape Fear Ash Basin GW Assessment\1.11 CSA Reporting\Tables\Table 12-4 Surficial GW Results KDF.xlsx Page 3 of 4 TABLE 12-4 RISK SCREENING TABLE: SURFICIAL GROUNDWATER DATA CAPE FEAR STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, MONCURE, NC Lead Magnesium Manganese Mercury Molybdenum Nickel Nitrate Potassium Selenium Sodium Strontium Thallium Total Total Total Vanadium Zinc Analytical Parameter Methane (as N) Sulfate Sulfide Dissolved Solids Organic Carbon Suspended Solids DIS TOT 707 DIS TOT DIS TOT DIS TOT DIS TOT TOT DIS TOT TOT DIS TOT DIS TOT DIS TOT DIS TOT Reporting Units ug/I ug/I mg/I ug/I ug/I ug/I ug/1 ug/I ug/I ug/I ug/1 ug/I mg-N/L mg/I ug/1 ug/l mg/I mg/I mg/I mg/l mg/1 ug/I ug/I mg/I mg/I mg/I ug/I ug/I mg/I mg/I SSA NCAC 02L Standard NE 15 NE NE 50 NE 1 NE NE NE NE 300 20 NE NE 20 NE NE NE 250 NE NE 0.2* Soo NE NE NE 0.3* NE 1 Sample ID Sample Analytical Results Collection Date Detections/Samples 0/9 2/14 12/12 9/9 14/14 0/9 0/14 4/10 3/10 4/12 4/9 5/14 8/11 12/12 1/9 3/14 12/12 9/9 10/10 13/13 0/10 0/9 1/14 12/12 9/9 3/10 4/10 6/10 4/9 3/14 Average Background Concentrations (Detections Only) 1.85 18.5 1109 2996 --- --- 12 10.5 8.9 3.36 31.9 0.87 1.41 1.95 1.82 63.8 0.418 0.548 154.7 --- --- 0.218 330 1.60 15.5 1.40 1.78 0.009 0.102 Maximum Concentration --- 2.48 82.3 4600 33700 --- --- 25 16.9 17.0 5.14 ISO 3.50 2.49 1.95 2.02 293.0 0.680 1.27 1600 --- --- 0.218 660 7.40 30.0 2.00 4.57 0.017 0.288 Number of Backgroundwater Samples that are Greater Than NCAC 2L O 0 O 0 12 0 O O O O O 1 0 0 O 0 O O 0 1 0 0 1 3 0 0 O 6 0 0 Coal Ash �u r, u.,ai Hyu i-Srwcial Aquifer COP( Notes: - Analytical method detection limit is greater than 15A NCAC 02L groundwater criteria - Bold highlighted concentration Indicates exceedance of the 15A NCAC 02L Appendix 2, April 1, 2013. - Indicates support/rationale for soil COPC attributable to coal ash. _ - Indicates constituent is not a soil COPC attributable to coal ash. ORP = Oxidation Reduction Potential my = millivolts DIS = Dissolved NE = Not established TOT = Total Temp = Temperature NTUS = nephelometric turbidity unit S.U. = Standard Unit DO = Dissolved Oxygen ug/I = microgram per liter Deg C = Degree Celsius umhos/cm = micro siemens per centimeter mg/I = milligrams per liter Spec Cord = Specific Conductance mg-N/L = miligram nitrogen per liter ft = feet < = concentration not detected at or above the reporting limit. * - Interim Maximum Allowable Concentrations (IMACs) of the 15A NCAC 02L Appendix 1, April, 1, 2013. --- = Not applicable Note 1: Consitituent is retained as a COPC if analytical method detection limit or concentration is greater than the groundwater criteria Note 2: Constituent is retained as a COPC if no groundwater criteria Note 3: Hexavalent Chromium concentration is greater than EPA screening value for tapwater (0.035 ug/L). See Table 10-3 (USEPA Regional Screening Levels [RSLs] rev., June 26, 2015) Note 4: Hexavalent Chromium concentration is less than EPA screening value for tapwater (0.035 ug/L). See Table 10-3 (USEPA Regional Screening Levels [RSLs] rev., June 26, 2015) Note 5: Speciation Sample date does not match listed sample collection date P:\Duke Energy Progress.1026\103. Cape Fear Ash Basin GW Assessment\1.11 CSA Reporting\Tables\Table 12-4 Surficial GW Results KDF.xlsx Page 4 of 4 TABLE 12-5 RISK SCREENING TABLE: BEDROCK GROUNDWATER DATA CAPE FEAR ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, MONCURE NC Analytical Parameter Redox Assignment PH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Alkalinity Aluminum Antimony Arsenic Barium Beryllium gi- carbonate Alkalinity Boron Cadmium Calcium Carbonate Alkalinity Chloride Chromium Cr(III)/Cr(VI) Cobalt Copper Iron DIS TOT DIS TOT DIS TOT DIS TOT DIS TOT DIS TOT TOTReporting Units None S.U. ft Deg C u/crosmg/I mV mV NTUs mg/l mg/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I mg/1 ug/I ug/I JISTOT' g/I mg/I mg/I15A NCAC 2L Standard NE 6.5-8.5 NE NE NE NE NE NE NE NE NE NE NE NE 1* NE SO NE 700 NE 4* NE NE 700 NE NE 250 NE SO NE 1* NE 1 NE 300 Sample ID Sample ection Date Coll Field Parameters Analytical Results BEDROCK ABMW-OIBRI'•'I 05/08/2015 Anoxic 8.1 28.07 28 639 0.37 -138 67 4 NM 120 7 103 <1 <i 5.34 5.64 119 124 <1 <i 120 1010 891 <1 <1 64.7 <10 23 <1 <1 <1 <1 <0.001 <0.001 72 173 ABMW-03BRI4•sl 05/19/2015 Anoxic 7.1 22.84 19 863 0.13 -72 133 8.44 NM 250 <5 177 <1 <1 1.2 1.28 127 129 <1 <1 240 189 188 <1 <1 96.7 <10 31 <1 <1 <1 <1 <0.001 <0.001 1400 1660 ABMW-05BR14•11 05/19/2015 Anoxic 6.2 24.58 21 329 0.14 -264 -59 4.68 NM 140 13 88 <1 <1 2.76 2.58 295 310 <1 <1 140 55 54 <1 <1 23.5 <10 5 <1 <1 <1 <1 <0.001 <0.001 21 129 CTMW-01 03/04/2015 NM 7.1 5.20 18 707 0.37 -54 151 5.48 NM NA NA 9 NA <1 NA <1 NA 185 NA NA NA NA 379 NA <1 NA NA 33 NA <5 NA NA NA <0.005 NA 874 CTMW-0114•1l 06/09/2015 NM 7.1 7.10 21 700 0.7 -140 65 2.6 NM 191 NA 11 NA <1 NA <1 NA 178 NA <1 191 NA 379 NA <1 104 <5 32 NA <5 NA <1 NA <0.005 NA 385 CTMW-02 03/04/2015 NM 6.2 9.14 14 304 3.19 210 415 3.72 NM NA NA 39 NA <1 NA 7.65 NA 245 NA NA NA NA <50 NA <1 NA NA 3.6 NA <5 NA NA NA 0.006 NA 59 CTMW-02 06/09/2015 NM 6.0 11.45 21 302 2.47 -78 127 4.47 NM 137 NA 105 NA <1 NA 8.69 NA 255 NA <1 137 NA <50 NA <1 20.3 <5 3.6 NA <5 NA <1 NA <0.005 NA 172 CTMW-07 03/04/2015 NM 7.0 23.80 18 576 1.89 28 233 1.26 NM NA NA 27 NA <1 NA 1AS NA 36 NA NA NA NA 53 NA <1 NA NA 31 NA <5 NA NA NA <0.005 NA 50 CTMW-07 06/08/2015 NM 7.2 24.43 22 576 1.88 64 269 0.25 NM 161 NA 14 NA <1 NA 1.5 NA 49 NA <1 161 NA 55 NA <1 62.4 <5 31 NA <5 NA <1 NA <0.005 NA 17 CTMW-08 03/04/2015 NM 7.1 9.58 15 783 0.23 -62 143 1.93 NM NA NA 21 NA <1 NA 6.69 NA 185 NA NA NA NA 382 NA <1 NA NA 16 NA <5 NA NA NA 0.005 NA 2070 CTMW-0814•11 06/09/2015 NM 7.3 11.56 19 759 0.55 -111 94 6.97 NM 260 NA 38 NA <1 NA 4.55 NA 187 NA <1 260 NA 356 NA <1 79.4 <5 16 NA <5 NA <1 NA <0.005 NA 1270 CTMW-08 DUP 03/04/2015 NM 7.1 9.58 15 783 0.23 -62 143 1.93 NM NA NA 16 NA <1 NA 6.61 NA 191 NA NA NA NA 422 NA <1 NA NA 16 NA <5 NA NA NA 0.005 NA 2580 CTMW-08 DUP 06/09/2015 NM 7.3 11.56 19 759 0.55 -111 94 6.97 NM 248 NA 50 NA <1 NA 5.15 NA 193 NA <1 248 NA 368 NA <1 81.1 <5 16 NA <5 NA <1 NA <0.005 NA 1640 MW-05BR 06/18/2015 Oxic 11.2 17.86 21 539 1.34 -165 40 3.44 NM 53 1210 1210 <1 <1 <1 <1 36 37 <1 <1 22 <50 <50 <1 <1 45 25 23 <1 1.07 <1 <1 0.00527 <0.001 <10 39 MW-06BR 06/03/2015 Mixed (oxic-anoxic) 7.6 5.40 19 1294 0.78 -193 12 4.64 NM 160 8 82 <1 <1 <1 <1 714 757 <1 <1 160 <50 <50 <1 <1 97.7 <10 250 <1 <1 <1 <1 <0.001 <0.001 <10 116 MW-06BR 06/30/2015 Mixed (anoxic) 7.4 5.06 19 1211 0.31 -248 -43 0.42 0 180 6 10 <1 <1 <1 <1 826 842 <1 <1 180 <50 <50 <1 <1 97.6 <10 250 <1 <1 <1 <1 <0.001 <0.001 157 178 MW-10D14•sl 05/28/2015 Mixed (oxic-anoxic) 6.6 15.40 18 1214 1.18 136 341 4.95 NM 200 <5 154 <1 <1 1.75 1.88 43 56 <1 <1 200 201 221 <1 <1 179 <10 21 <1 <1 <1 <1 <0.001 <0.001 130 243 MW-IOBR14•sl 05/27/2015 Anoxic 8.4 16.60 18 703 0.13 -41 164 3.92 NM 120 23 213 <1 <1 2.42 2.49 73 64 <1 <1 120 127 110 <1 <1 81.4 <10 14 <1 <1 <1 <1 <0.001 <0.001 20 137 MW-12BR1'•sl 03/19/2015 Anoxic 7.4 10.90 16 523 0.28 -43 162 3.88 0 160 <5 88 <1 <1 1.04 1.12 605 612 <1 <1 160 <50 <50 <1 <1 42.5 <10 53 <1 <1 <1 <1 <0.001 <0.001 20 107 MW-14 06/30/2015 Suboxic 9.1 11.80 19 423 0.13 -309 -104 31.6 0 110 104 614 <1 <1 <1 <1 55 64 <1 <1 100 125 132 <1 <1 10.3 <10 40 <1 1.06 <1 <1 0.00155 <0.001 <10 419 MW-17BR1'•sl 03/19/2015 Suboxic 8.2 6.34 14 491 0.23 -19 166 4.6 0 150 8 193 <1 <1 2.18 2.24 540 536 <1 <1 150 <50 <50 <1 <1 38.7 <10 33 <i <1 <1 <1 <0.001 <0.001 <10 143 MW-20BR14•sl 05/27/2015 Anoxic 7.7 13.00 16 331 0.07 -124 81 6.37 NM 140 6 621 <1 <1 1.43 1.57 136 145 <1 <1 140 <50 <50 <1 <1 25.1 <10 12 <i <1 <1 <1 <0.001 <0.001 63 730 MW-21BR1'•s1 05/07/2015 Oxic 8.8 20.45 30 368 1.7 60 265 4.78 NM 76 39 463 <1 <1 1.92 1.98 95 106 <1 <1 74 151 151 <1 <1 5.45 <10 42 <1 <1 <1 <1 <0.001 <0.001 <10 209 PZ-03D 08/05/2015 Anoxic 7.6 6.05 23 645 0.47 -38 167 4.41 NM 150 <5 57 <1 <1 5.01 5.49 131 138 <1 <1 140 57 <50 <1 <1 48.8 <10 62 <1 <1 <1 <1 <0,001 <0.001 21 97 DETECTIONS SAMPLES "-- --- --- --- --" --- --- --- --- --- 19/19 10/14 24/24 0/14 0/24 10/14 18/24 14/24 24/24 0/14 0/19 19/19 8/14 15/24 0/14 0/24 19/19 1/19 24/24 0114 2/24 0/14 0/19 2/14 3/24 9/41 AVERAGE BEDROCK WATER CONCENTRATION (DETECTIONS ONLY) --- --- --- --- --- --- --- --- --- --- 158 142 183 --- --- 2.51 3.81 271 234 --- --- 155 239 276 --- --- 63.4 25 44 --- 1,065 --- --- 0.00341 0.0053 2 MAXIMUM BEDROCK WATER GROUNDWATER CONCENTRATION ___ ___ ___ ___ ___ ___ ___ ___ --- 260 1,210 1,210 --- --- 5.34 8.89 826 842 --- --- 260 1,010 891 --- --- 179.0 25 250 --- 1,070 --- --- 0.00527 0.0060 1,4 NUMBER OF BEDROCK WATER SAMPLES EXCEEDING 02L 0 0 0 0 0 0 0 0 2 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 Detections/Samples --- --- --- --- --- --- --- --- --- 12/14 7/9 14/14 0/9 0/14 5/9 7/14 9/9 14/14 0/9 1/12 12/12 3/9 4/14 0/9 1/14 12/14 0/12 13/13 0/9 1/14 5/9 6/12 0/9 3/14 8/9 13/14 Average Background Concentrations (Detections Only) --- --- --- --- --- --- --- --- --- 87.7 36 804 --- --- 3.30 3.15 210 171 --- 10 87 118 163 --- 1.21 43.1 --- 67 --- 3.39 7.8 62 --- 0.010 9330 6678 Maximum Concentration --- --- --- --- --- --- --- --- --- 180.0 82 6850 --- --- 6.60 6.76 424 429 --- 10 170 217 482 --- 1.21 147.0 --- 240 --- 3.39 19.8 387 --- 0.0307 45000 45500 Number of eackgroundwater Samples that are Greater Than NCAC 2L --- --- --- --- --- --- --- --- 0 0 0 0 O 0 O 0 O O 1 0 0 0 0 0 O O 0 O 0 0 6 0 0 0 8 Notes: - Bold highlighted concentration indicates exceedance of the 15A NCAC 02L, Appendix 2, April 1, 2013. Ey:e:: - Indicates support/rationale for soil COPC attributable to coal ash. - Indicates constituent is not a soil COPC attributable to coal ash. ORP = Oxidation Reduction Potential mV = millivolts DIS = Dissolved NE = Not established TOT = Total NTUs = nephelometric turbidity unit Temp = Temperature S.U. = Standard Unit DO = Dissolved Oxygen ug/I = microgram per liter Deg C = Degree Celsius umhos/cm = micro siemens per centimeter mg/I = milligrams per liter Spec Cord = Specific Conductance mg-N/L = miligram nitrogen per liter ft = feet < = concentration not detected at or above the reporting limit. * - Interim Maximum Allowable Concentrations (IMACs) of the 15A NCAC 02L, Appendix 1, April, 1, 2013 --- = Not applicable Coal Ash COPC NCAC 21 Bedrock Groundwater cone. > NCAC 2L Bedrock Groundwater COPC No Yes No Yes No Yes No No Yes No No Yes No Yes No No No Yes No Yes No No No Yes No Yes Yes Ves Ves Yes Ves Yes Ves Yes' No No No YesNoNo jNo NoNo NO No No No�No No No No No No Yes No No No No No No No No No No No Ves Note 1: Constituent is retained as a COPC if analytical method detection limit or concentration is greater than the groundwater criteria Note 2: Constituent is retained as a COPC if no groundwater criteria Note 3: Hexavalent Chromium concentration is greater than EPA screening value for tapwater (0.035 ug/L). See Table 10-3 (USEPA Regional Screening Levels [RSLs] rev., June 26, 2015) Note 4: Hexavalent Chromium concentration is less than EPA screening value for tapwater (0.035 ug/L). See Table 10-3 (USEPA Regional Screening Levels [RSLs] rev., June 26, 2015) Note 5: Speciation Sample date does not match listed sample collection date Prepared by: KDF Checked by: VTV P:\Duke Energy Progress.1026\103. Cape Fear Ash Basin GW Assessment\1.11 C5A Reporting\Tables\Table 12-5 Bedrock GW Results KDF.xlsx page 1 of 2 TABLE 12-5 RISK SCREENING TABLE: BEDROCK GROUNDWATER DATA CAPE FEAR ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, MONCURE NC Analytical Parameter Lead Magnesium Manganese Mercury Methane Molybdenum Nickel Nitrate (as N) Potassium Selenium Sodium Strontium Sulfate Sulfide Thallium Total Dissolved Solids Total Organic Carbon Total Suspended Solids Vanadium Zinc DIS TOT TOT DIS TOT DIS TOT DIS TOT DIS FTOT TOT DIS I TOT TOT DIS TOT DIS TOT DIS I TOT DIS TOT Reporting Units ug/I ug/I mg/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I mg-N/L mg/I ug/I ug/I mg/I mg/I mg/I mg/I mg/I ug/I ug/I mg/I mg/I mg/I ug/I ug/I mg/I mg/I SSA NCAC 2L Standard NE 15 NE NE SO NE 1 NE NE NE NE 100 10 NE NE 20 NE NE NE 250 NE NE 0.2* 500 NE NE NE 0.3* NE 1 Sample ID Sample Collection Date Analytical Results 11 ROCK ABMW-01BRI"'1 OS/08/2015 <1 <1 11.2 616 629 <0.05 <0.05 <10 70.3 68.8 1.95 1.67 <0.01 2.33 3.76 <1 49.4 0.535 0.542 140 0.345 <0.2 <0.2 400 2.1 7 <0.3 0.867 <0.005 <0.005 ABMW-03BRI4lsl 05/19/2015 <1 <1 16.9 1690 1690 <0.05 <0.05 <10 1.75 1.48 <1 <1 0.018 2.01 <1 <1 62.3 0.575 0.573 140 <0.1 <0.2 <0.2 540 0.883 9 <0.3 <0.3 <0.005 <0.005 ABMW-05BRI"'I 05/19/2015 <1 <1 5.49 63 63 <0.05 <0.05 <10 7.35 7.25 <1 <1 <0.01 1.8 <1 <1 38.4 0.353 0.358 15 <0.1 <0.2 0.359 200 0.471 <5 <0.3 <0.3 <0.005 <0.005 CTMW-01 03/04/2015 NA <1 NA NA 1430 NA <0.05 NA NA NA NA <5 NA NA NA <1 NA NA NA 100 NA NA <0.2 460 NA NA NA NA NA <0.005 CTMW-0114•11 06/09/2015 NA <1 13.8 NA 546 NA <0.05 NA NA <1 NA <5 0.07 1.59 NA <1 23.8 NA NA 100 NA NA <0.2 460 NA <5 NA NA NA <0.005 CTMW-02 03/04/2015 NA <1 NA NA 6 NA <0.05 NA NA NA NA <5 NA NA NA <1 NA NA NA 6 NA NA <0.2 180 NA NA NA NA NA <0.005 CTMW-02 06/09/2015 NA <1 3.05 NA 10 NA <0.05 NA NA 12.6 NA <5 0.16 1.43 NA <1 45.1 NA NA 6.6 NA NA 10.2 170 NA <5 NA NA NA 10.001 CTMW-07 03/04/2015 NA <1 NA NA 138 NA <0.05 NA NA NA NA <5 NA NA NA <1 NA NA NA 85 NA NA <0.2 350 NA NA NA NA NA <0.005 CTMW-07 06/08/2015 NA <1 24.7 NA 110 NA <0.05 NA NA <1 NA <5 <0.023 1.39 NA <1 21.2 NA NA 85 NA NA <0.2 380 NA <5 NA NA NA <0.005 CTMW-08 03/04/2015 NA <1 NA NA 980 NA <0.05 NA NA NA NA <5 NA NA NA <1 NA NA NA 110 NA NA <0.2 480 NA NA NA NA NA <0.005 C-MW-0814•11 06/09/2015 NA <1 15.4 NA 686 NA <0.05 NA NA 7.11 NA <5 0.06 2.34 NA <1 66.5 NA NA 100 NA NA <0.2 450 NA <5 NA NA NA <0.005 CTMW-08 DUP 03/04/2015 NA <1 NA NA 1050 NA <0.05 NA NA NA NA <5 NA NA NA <1 NA NA NA 110 NA NA <0.2 490 NA NA NA NA NA <0.005 CTMW-08 DUP 06/09/2015 NA <1 15.6 NA 750 NA <0.05 NA NA 6.54 NA <5 0.05 2.39 NA <1 65.6 NA NA 110 NA NA <0.2 460 NA <5 NA NA NA <0.005 MW-05BR 06/18/2015 <1 <1 0.91 <5 <5 <0.05 <0.05 <10 6.22 6.56 <1 <1 0.019 2A7 <1 <1 27.7 0.136 0.135 71 <0.1 <0.2 <0.2 220 0.769 <5 14.1 14.4 0.01 <0.005 MW-06BR 06/03/2015 <1 <1 32.5 417 475 <0.05 <0.05 18 4.73 4.57 <1 <1 0.011 4.15 <1 <1 94.1 0.892 0.907 39 <0.1 0.362 <0.2 790 0.653 <5 1.88 2.19 <0.005 <0.005 MW-06BR 06/30/2015 <1 <1 29.2 748 743 <0.05 <0.05 11 3.47 3.17 <1 <1 0.018 3.89 <1 <1 89.6 0.951 0.946 42 <0.1 <0.2 <0.2 770 0.683 <5 0.53 0.659 0.013 <0.005 MW-10D14,s1 05/28/2015 <1 <1 48.5 950 974 <0.05 <0.05 17 <1 <1 <1 <1 <0.01 3.7 <1 <1 22.6 1.33 1.3 410 <0.1 <0.2 0.233 890 0.508 8 0.547 0.938 <0.005 0.017 MW-10BR14,11 05/27/2015 <1 <1 13 375 336 <0.05 <0.05 13 6.04 6.57 <1 <1 0.013 2.46 <1 <1 50.5 0.949 0.941 210 <0.1 <0.2 <0.2 490 0.976 9 2.91 3.34 0.015 <0.005 MW-12BRIal'1 03/19/2015 <1 <1 18.4 476 482 <0.05 <0.05 <10 <1 1.02 <1 <1 <0.01 1.92 <1 <1 39.6 0.448 0.453 12 <1 <0.2 <0.2 280 0.777 <5 <0.3 0.338 <0.005 <0.005 MW-14 06/30/2015 <1 <1 1.48 <5 24 <0.05 <0.05 53 70.9 72 <1 <1 <0.01 2.92 <1 <1 81.9 0.26 0.278 30 0.282 <0.2 <0.2 260 0.795 16 <0.3 1.37 0.009 <0.005 MW-17BRIal'1 03/19/2015 <1 <1 10.1 34 34 <0.05 <0.05 300 4.76 4.88 <1 <1 <0.01 2.05 <1 <1 54.9 0.596 0.595 38 <1 <0.2 <0.2 290 3.6 <5 0.5 0.761 <0.005 <0.005 MW-20BRI4,'1 05/27/2015 <1 <1 6.37 124 131 <0.05 <0.05 <10 2.3 2.55 <1 <1 <0.01 1.92 <1 <1 40 0.316 0.317 12 <0.1 <0.2 <0.2 210 0.548 11 0.826 1.61 <0.005 0.006 MW-216R1"'I 05/07/2015 <1 <1 0.688 <5 <5 <0.05 <0.05 <10 269 232 <1 <1 <0.01 1.21 <1 <1 70.1 0.109 0.109 5.9 <0.1 <0.2 <0.2 180 0.318 <5 0.515 0.997 <0.005 <0.005 PZ-03D O8/05/2015 <1 <1 9.24 448 475 <0.05 <0.05 <10 5.42 5.58 <1 1.36 0.028 2.4 <1 <1 73.2 0.662 0.646 74 <0.1 <0.2 <0.2 390 0.685 5 <0.3 0.384 0.056 <0.005 DETECTIONS/SAMPLES 0/14 0/24 19/19 11/14 22/24 0/14 0/24 6/14 12/14 16/19 1/14 2124 10/19 19/19 1/14 0/24 19/19 14/14 14/14 24/24 2/14 1/14 2/24 24/24 14/14 7119 8/14 12/14 5/14 2/24 AVERAGE BEDROCK WATER CONCENTRATION (DETECTIONS ONLY) --- --- 14.6 540 535 --- --- 69 37.7 27.7 1.95 1.52 0.045 2.32 3.76 --- 53.5 0.58 0.579 86 0.314 0.362 0.296 408 1.0 9 2.73 2.32 0.021 0.012 MAXIMUM BEDROCK WATER GROUNDWATER CONCENTRATION ___ --- 48.5 1,690 1,690 --- --- 300 269.0 232.0 1.95 1.67 0.160 4.15 3.76 --- 94.1 1.33 1.300 410 0.345 0.362 0.359 890 3.8 16 14.10 14.40 0.056 0.017 NUMBER OF BEDROCK WATER SAMPLES EXCEEDING 02L 0 0 0 0 18 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 2 4 0 0 0 12 0 0 Detections/Samples 0/9 2/14 12/12 9/9 14/14 0/9 0/14 4/10 3/10 4/12 4/9 5/14 8/11 12/12 1/9 3/14 12/12 9/9 10/10 13/13 0/10 0/9 1/14 1 12/12 9/9 3/10 4/10 6/10 4/9 3/14 Average Background --- 1.85 18.5 1109 2996 --- --- 12 10.5 8.9 3.36 31.9 0.87 1.41 1.95 1.82 63.8 0.418 0.548 154.7 --- --- 0.218 330 1.60 15.5 1.40 1.78 0.009 0.102 Concentrations (Detections Only) Maximum Concentration --- 2.48 82.3 4600 33700 --- --- 25 16.9 17.0 5.14 ISO 3.50 2.49 1.95 2.02 293.0 0.680 1.27 1600 --- --- 0.218 660 7.40 30.0 2.00 4.57 0.017 0.288 Number of Backgroundwater Samples that are Greater Than 0 0 0 0 12 0 0 O O 0 0 1 0 O 0 0 0 0 0 1 0 0 1 3 0 O 0 6 0 0 NCAC 2L Coal Ash COPC .CAC 2L Bedrock Groundwater conc. > .CAC 2L Bedrock Groundwater COPC No No No No Yes No No No No Yes No Yes=NoNo No No No No No Yes No No Yes Yes No No No Yes No Yes Yes No Yes Yes Yes Yes Yes Yes Yes Yes' No Yes Yes Yes Yes No No No No No Yes No No No No Yes No NoNo No No No No Yes No No Yes Yes No No Yes No No Notes - Bold highlighted concentration indicates exceedance of the 15A NCAC 02L, Appendix 2, April 1, 2013 F .e$ - Indicates support/rationale for soil COPC attributable to coal ash. iiiiij - Indicates constituent is not a soil COPC attributable to coal ash. ORP = Oxidation Reduction Potential mV = millivolts DIS = Dissolved NE = Not established TOT = Total NTUs = nephelometric turbidity unit Temp = Temperature S.U. = Standard Unit DO = Dissolved Oxygen ug/I = microgram per liter Deg C = Degree Celsius umhos/cm = micro siemens per centimeter mg/I = milligrams per liter Spec Cond = Specific Conductance mg-N/L = miligram nitrogen per liter ft = feet < = concentration not detected at or above the reporting limit. * - Interim Maximum Allowable Concentrations (IMACs) of the 15A NCAC 02L, Appendix 1, April, 1, 2013. --- = Not applicable Note 1: Constituent is retained as a COPC if analytical method detection limit or concentration is greater than the groundwater criteria Note 2: Constituent Is retained as a COPC if n0 groundwater criteria Note 3: Hexavalent Chromium concentration is greater than EPA screening value for tapwater (0.035 ug/L). See Table 10-3 (USEPA Regional Screening Levels [RSLs] rev., June 26, 2015) Note 4: Hexavalent Chromium concentration is less than EPA screening value for tapwater (0.035 ug/L). See Table 10-3 (USEPA Regional Screening Levels [RSLs] rev., June 26, 2015) Note 5: Speciation Sample date does not match listed sample collection date Prepared by: KDF Checked by: VTV P:\Duke Energy Progress.1026\103. Cape Fear Ash Basin GW Assessment\1.11 C5A Reporting\Tables\Table 12-5 Bedrock GW Results KDF.xlsx page 2 of 2 TABLEI2-6 SOILS (0-2') ANALYTICAL RESULTS WITH SCREENING CRITERIA - INDUSTRIAL-USE/RESIDENTIAL-USE SOIL RSLs HUMAN HEALTH CAPE FEAR STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, MONCURE, NC Analytical Parameter Percent Moisture pH at 25 Degrees C Aluminum Antimony Arsenic Barium Beryllium Boron Cadmium Calcium Chloride Chromium Cr(III)/Cr(VI) Cobalt Copper Iron Lead Magnesium Manganese Mercury Molybdenum Nickel Nitrate (as N) Potassium Selenium Sodium Strontium Sulfate Thallium Total Organic Carbon Vanadium Zinc Reporting Units % S.U. 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/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 Soil RSL - Industrial Health NE NE 110000 47 3 22000 230 23000 98 NE NE NE 35 4700 a2000 Boo NE 2600 4 Sao 2200 NE NE Sao NE 70000 NE 1.2 NE Sao 3S000 Soil RSL- Residential Health NE NE 7700 3.1 0.68 1500 16 1600 7.1 NE NE NE 2.3 310 55 00 400 NE ISO 0.94 39 150 NE NE 39 NE 4700 NE 0.078 NE 39 2300 Sample ID Sample Collection Date Analytical Results ABMW-04 AB (1-2) 04/11/2015 42.3 5.4 5200 <4.2 21.9 482 1.1 <10.6 0.59j 1390 <216 10.5 6.9j 19.3 20500 <4.2 447 56.2 0.093 <2.1 13 <21.6 853 6.9j <211 97.4 <216 <4.2 104000 20.4 9.7 ABMW-04 AB (1-2) DUP 04/11/2015 19 6.6 6260 <3 30.4 389 1.4 <7.6 <0.36 1710 <154 11.5 6.5 25.7 16800 5.5j 523 55.7 0.13 1.8j 16.1 <15.4 1030 7.1 <151 135 <154 <3 82900 25.8 14.5 B-N1963(0-2) 03/30/2015 11.8 3.2 1920 <1.4 118 47.8 <0.14 40 <0.17 3400 <144 9.3 2.1j 19 50400 42.1 1170 68.8 0.13 1.7j 3.9 <14.4 750 4.7 <141 20.2 5650 <1.4 162000 24.9 10.3 MW-05BR SB (0-2) 04/23/2015 19.8 5.6 11500 <3 <3 62.8 0.21j <7.6 <0.36 1230 <156 24.7 3.7j 8.2 26200 7.4 905 78 0.037 <1.5 1.31 <15.6 <152 <3 <152 17.5 <156 <3 1480 89.6 11.6 MW-06BR SB (0-2) 05/30/2015 14.6 5.5 9800 <3 <3 100 0.58 <7.6 <0.37 442 <144 18.7 17.5 12.7 18900 10.6 1840 1080 0.05 <1.5 6.9 <14.4 <152 <3 <152 8.6 145j <3 4790 50.2 27.6 MW-09 SB (0-2) 04/25/2015 21.2 4.1 4250 <3.3 <3.3 18.1 <0.17 <8.3 <0.4 <83.2 <155 4.3 <3.3 4.7 13000 6.3 j 305 19.4 0.011 <1.7 <0.83 <15.5 <166 <3.3 <166 <1.7 <155 <3.3 6550 10.2 9.4 MW-10BR SB (0-2) 04/08/2015 10 5.0 3300 <2.9 <2.9 33.5 0.21 6.4 <0.35 291 <136 20.6 9.3 7.1 10600 6.9 650 363 0.029 <0.29 2.7 <13.6 114 <2.9 <29 3.9 <136 <2.9 3780 31.6 27.2 MW-12BR SB (0-2) 02/24/2015 17.3 1 5.7 6230 <0.58 1 0.82 j 77.8 1 0.47 7.8 0.092 NA <150 9.4 13.2 8.4 13500 8.7 1520 1510 0.032 <0.29 4.2 <15 68 1.11 79.2 1 14 <150 1 <0.58 2140 1 30.9 19.3 MW-15 SB (0-2) 04/01/2015 18.3 5.2 9980 <1.5 <2.9 64.9 0.6 18.2 <0.18 1120 <153 15.2 6.4 11.4 24100 8.5 2170 367 0.019 <1.5 8.8 <15.3 <146 <2.9 177 j 15.9 539 <2.9 1530 55.1 32.8 MW-16 SB (0-2) 04/28/2015 29.3 5.0 4130 <3.4 <3.4 69.2 0.26 j <8.4 <0.4 642 <180 3.8 4.3 j 4 7250 8.1 1380 392 0.018 <1.7 3.9 <18 227 j <3.4 <168 9.5 <180 <3.4 13400 12.1 18.9 MW-17 SB (0-2) 06/29/2015 16 5.4 7370 <3.1 <3.1 140 0.71 <7.8 <0.37 850 <138 13.3 13.3 12.8 14600 13.1 1400 1230 0.063 <1.6 5.5 <13.8 249j <3.1 <155 11.8 <138 <3.1 13900 46.1 27 MW-18 SB (0-2) 02/11/2015 28.3 5.2 11800 <1.7 <1.7 103 0.73 <34.3 <0.21 664 <173 16.4 34.7 15.9 17500 12.2 1670 3520 0.05 <6.9 6.5j <17.3 73.5 <1.7 241 10.2 344j <1.7 4260 53.9 29.1 MW-19 SB (0-2) 02/11/2015 19.7 5.1 9130 <1.6 1.7 j 58 0.46 <31.4 <0.19 215 275 j 26.5 33.7 7.2 19400 23.4 294 2070 0.052 <0.31 3.9 <15.5 88.6 <1.6 <31.4 4.4 447 <1.6 1610 58.8 8.2 MW-20 SB (0-2) 05/13/2015 19.9 5.1 10100 <3.1 <3.1 75.7 0.39 <7.8 <0.37 1350 <154 16.9 15.2 17.1 18800 9 2470 747 0.0061j <1.6 5.9 <15.4 <156 <3.1 312 16.8 <154 <3.1 2950 47.3 32.2 MW-21 SB(0-2) 04/21/2015 13.9 3.8 1480 <3 60.3 66.1 <0.15 <7.5 <0.36 93.3j <141 3.7 <3 2.2 8420 <3 178 25.3 0.013 <1.5 <0.75 <14.1 <151 3.2j <151 4 <141 <3 932 14.9 3.1j MW-21 SB (0-2) 06/18/2015 36.6 5.2 1610 <4.1 1 40.1 87.5 <0.2 <10.2 1 <0.49 2490 <191 3.1 <4.1 8.3 5980 13.1 393 781 1 0.75 <2 1.8j <19.1 338j 5.7j <205 25 285j <4.1 42700 8.8 20.6 Nitrate Total(as Soil Constituents Aluminum Antimony Arsenic Barium Beryllium Boron Cadmium Calcium Chloride Chromium Cobalt Copper Iron Lead Magnesium Manganese Mercury Molybdenum Nickel Potassium Selenium Sodium Strontium Sulfate Thallium Organic Vanadium Zinc N) Carbon Detected Above Industrial Soil Screening Levels 0 0 S 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 Detection Limit > Industrial Soil Screening Level 0 0 4 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 1s 0 0 0 Detected Above Residential Soil Screening Levels 6 1 0 1 7 1 0 1 0 0 1 0 1 0 1 0 1 0 1 12 1 0 1 16 1 0 1 0 1 10 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 7 0 Detection Limit > Residential Soil Screening Level 0 4 9 1 0 0 0 0 0 1 0 0 3 1 0 1 0 1 0 0 0 0 0 0 1 0 0 0 0 0 0 1 16 1 0 0 0 Coal Ash COPC Soil RSL Soil conc. > Soil RSL Soil COPC potentially attributable to coal ash Yes Yes Yes No Yes Yes Yes No No Yes Yes No Yes No No Yes No Yes Yes No No No No No Yes Yes No Yes Yes Yes Yes Yes Yes Yes Yes No Yes Yes Yes Yes Yes No Yes Yes Yes Yes Yes' Yes No No No Yes' Yes Yes Ves No No Yes' Yes' Ves No Yes Yes Yes No No No No No No Yes Yes No Yes No No Ves No No No No No No No No Yes Yes No Yes No Prepared by: KDF Checked by: MMS NotesL Bold color highlighted concentrations indicate highest exceedance of the EPA Mid -Atlantic Risk Assessment regional screening levels for soil, June 26, 2015, for the category listed below: - Concentration Greater than Soil RSL - Residential -Use Scenario Note 1: COPC is retained if analytical method detection limit or concentration is greater than soil RSL - Concentration Greater than Soil RSL - Industrial -Use Scenario Note 2: COPC is retained if no soil RSL - Detection limit Greater Than Residential Soil RSL - Detection Limit Greater Than Industrial Soil RSL - Indicates support/rationale for soil COPC potentially attributable to coal ash. O- Indicates constituent is not a soil COPC potentially attributable to coal ash. S.U. = Standard Units mg/kg = milligram per kilogram < = concentration not detected at or above the reporting limit. j = indicates concentration reported below Practical Quantitation Limit (PQL), but above Method Detection Limit (MDL) and therefore concentration is estimated DUP = Duplicate P:\Duke Energy Progress. 1026\103. Cape Fear Ash Basin GW Assessment\1.11 CSA Reporting\Tables\Table 12-6 Soils (0-2) Analytical Results- Industrial and Residential.xlsx Page 1 of 1 TABLE12-7 SEDIMENT ANALYTICAL RESULTS WITH SCREENING CRITERIA - INDUSTRIAL-USE/RESIDENTIAL-USE SOIL RSLs HUMAN HEALTH CAPE FEAR STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, MONCURE, NC Analytical Parameter Percent Moisture pH at 25 Degrees C Aluminum Antimony Arsenic Barium Beryllium Boron Cadmium Calcium Chloride Chromium Cr(III)/Cr(VI) Cobalt Copper Iron Lead Magnesium Manganese Mercury Molybdenum Nickel Nitrate (as N) Potassium Selenium Sodium Strontium Sulfate Thallium Total Organic Carbon Vanadium Zinc Reporting Units % S.U. 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/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 Soil RSL- Industrial Health NE NE 110000 47 3 22000 230 23000 98 NE NE NE 35 4700 82000 goo NE 2600 4 580 2200 NE NE 580 NE 70000 NE 1.2 NE 580 35000 Soil RSL - Residential Health NE NE 7700 3.1 0.68 1500 16 1600 7.1 NE NE NE 2.3 310 5500 400 NE ISO 0.94 39 ISO NE NE 39 NE 4700 NE 0.078 NE 39 2300 Sample ID Sample Collection Date Analytical Results S-04 06/11/2015 88.9 6.8 10600 <22.9 45.8j 235 6.8 187 <2.8 9650 <218 8.9j 87.9 39.4 193000 <22.9 2820 1450 0.051j <11.5 66.7 <21.8 <1150 <22.9 <1150 98.7 267j <22.9 166000 30.9j 524 S-09 05/20/2015 88.4 6.4 2390 <22.2 <22.2 23.9 2.3 86.2j <2.7 6500 <1100 <5.6 158 10.6j 11200 <22.2 1490 277 0.068 <11.1 76.2 <110 <1110 <16.7 <1110 47.5 16601 <22.2 200000 <22.2 51.8 S-10 06/11/2015 74.8 7.0 19000 <9.9 <9.9 150 1.2 <24.8 <1.2 3740 <100 25.6 41 27.5 29600 15.1j 2930 606 0.056 <5 18 <10 <497 <9.9 <497 41.2 105j <9.9 47600 62 106 S-16 06/11/2015 58.1 3.6 3670 <5.7 237 18.5 0.82 38 <0.69 984 <303 2j 14.3 <1.4 420000 <5.7 386 143 0.02 <2.9 29.5 <30.3 585 <5.7 <1150 21.7 4680 <5.7 50400 15.3 73.9 SW-85DS 06/11/2015 63.8 6.7 10100 <7.1 <7.1 80.2 0.65j <17.6 <0.85 1950 <67.6 15.3 23.2 13.9 30200 10.2j 2050 267 0.035 <3.5 11.1 <6.8 <353 <7.1 <353 19.8 75.1j <7.1 34800 42.7 56.2 SW-BA1 05/20/2015 39 6.1 5520 <4.2 <4.2 46.2 0.26j <10.5 <0.5 669 <205 5.2 <4.2 7.4 12600 8.2j 728 223 0.02 <2.1 2.3 <20.5 <210 <3.2 <210 8.4 <205 <4.2 11000 12.6 17.3 SW-BA2 05/20/2015 68.3 5.0 10200 <8.2 <8.2 127 0.62j 25.61 <0.98 1010 <380 23.3 12.8j 61.1 33900 11.2j 1300 502 0.057 <4.1 14.5 <38 <409 <6.1 <409 12.3 <380 <8.2 198000 34.6 46.2 SW-BB1 05/20/2015 23.4 5.9 1660 <3.2 <3.2 1 13.9 <0.16 1 <8.1 <0.39 226 <160 1.4j <3.2 2 3640 <3.2 215 32.6 0.0067j <1.6 0.87j <16 <161 <2.4 <161 1.9j <160 <3.2 1060 3.4j 7.8 SW-CFDG 06/11/2015 32.8 6.2 8270 <3.8 <3.8 69.4 0.3j <9.4 <0.45 875 <182 47 11.6 17.1 15500 13.3 1300 537 0.055 <1.9 6.2 <18.6 271j <3.8 <188 9.9 <182 <3.8 15500 38.5 42.6 SW-CFDG CUP 06/11/2015 34 6.0 6120 <3.8 <3.8 46 0.21j <9.5 <0.46 603 <187 24.3 8.5 10.1 12200 8.5 918 300 0.03 <1.9 4.3 <18.7 193j <3.8 <190 7 <187 <3.8 20600 31.6 29.1 SW -HAW 06/11/2015 31.2 6.0 3620 <3.5 <3.5 37.1 <0.18 <8.8 <0.42 481 <182 16 5.9j 5.6 8810 5.1j 660 503 0.018 <1.8 3.2 <18.2 <175 <3.5 <175 5.6 <182 <3.5 8620 21.3 29.2 SW-SHD-56 05/19/2015 41.9 6.4 13600 1 <4.1 <4.1 123 0.66 <10.2 <0.49 1030 <211 44.6 22.6 24.3 30600 17.7 2200 1550 0.12 <2 7.9 <21.1 393j <3.1 <204 13.5 <211 <4.1 29800 66.9 53.3 SW-SHD-PLANT 05/19/2015 41.2 6.1 6780 <4.3 <4.3 74.6 0.56 <10.7 1 1010 <207 18.2 7.3j 11.6 11500 6.71 1440 380 0.023 <2.1 5.6 <20.7 422j <3.2 <215 12.7 <207 <4.3 6930 20.2 34.7 SW-SHD-REF 05/20/2015 51.7 6.1 7710 <5.1 <5.1 101 0.49j <12.7 <0.61 1320 <252 8.8 9j 12.5 15600 9.2j 2390 358 0.024 <2.5 9.8 <25.2 428j <3.8 <255 14.3 <252 <5.1 15600 14.5 39.7 SW 05/19/2015 36.9 6.8 5900 <4.1 <4.1 120 0.97 24.9 <0.49 40300 <195 15 21.4 14.2 29500 8.5 1210 1200 0.014 2.4j 5.4 <19.5 <205 <3.1 362j 104 <195 <4.1 4240 41.3 23.7 Nitrate Total Soil Constituents -- -- Aluminum Antimony Arsenic Barium Beryllium Boron Cadmium Calcium Chloride Chromium Cobalt Copper Iron Lead Magnesium Manganese Mercury Molybdenum Nickel Potassium Selenium Sodium Strontium Sulfate Thallium Organic Vanadium Zinc as N) Carbon Detected Above Industrial Soil Screening Levels 0 0 2 0 0 0 0 0 0 0 3 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Detection Limit > Industrial Soil ScreeningLevel 0 0 13 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 15 0 0 0 DetectedAbove esi entia m 7 0 2 0 0 0 0 0 0 0 13 0 14 0 0 13 0 0 0 0 0 0 0 0 0 0 0 4�Eo Screenin Levels Detection Limit > Residential Soil Screening Level 0 15 13 0 0 0 0 0 0 0 2 0 0 0 iJ 0 0 0 0 0 0 0 0 0 0 15 0 0 Coal Ash COPC Soil RSL Soil cone. > Soil RSL Soil COPC potentially attributable to coal ash Yes Yes Yes No Yes Yes Yes No No Yes Yes No Yes No No Yes No Yes Yes No No No No No Yes Yes No Yes Yes Yes Yes Yes Yes Yes Yes No Yes Yes Yes Yes Yes No Yes Yes Yes Yes Yes' Yes No No No Yes' Yes I Yes Yes No No I Yes' Yes' Yes I No Yes Yes Yes No No I No No No No Yes Yes No Yes No No Yes No No No No No I No No No Yes Yes No Yes No Prepared by: KDF Checked by: MMS Notes Bold color highlighted concentrations indicate highest exceedance of the EPA Mid -Atlantic Risk Assessment regional screening levels (RSLs) for soil, June 26, 2015, for the category listed below: - Concentration Greater than Soil RSL - Residential -Use Scenario Note 1: COPC is retained if analytical method detection limit or concentration is greater than soil RSL - Concentration Greater than Soil RSL - Industrial -Use Scenario Note 2: COPC is retained if no soil RSL - Detection limit Greater Than Residential Soil RSL - Detection Limit Greater Than Industrial Soil RSL 0 -Indicates support/rationale for soil COPC potentially attributable to coal ash. - Indicates constituent is not a soil COPC potentially attributable to coal ash. S.U. = Standard Units mg/kg = milligram per kilogram < = concentration not detected at or above the reporting limit. j = indicates concentration reported below Practical Quantitation Limit (PQL), but above Method Detection Limit (MDL) and therefore concentration is estimated DUP = Duplicate P:\Duke Energy Progress. 1026\103. Cape Fear Ash Basin GW Assessment\1.11 CSA Reporting\Tables\Table 12-7 Sediment Indust Resident.xlsx Page 1 of 1 TABLE 12-8 SURFACE WATER ANALYTICAL RESULTS WITH SCREENING CRITERIA - EPA RECOMMENDED WATER QUALITY CRITERIA AND 15A NCAC 2B STANDARDS HUMAN HEALTH CAPE FEAR ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, MONCURE, NC Analytical Parameter Redox Assignment pH Temp Spec Cond DO ORP Turbidity Alkalinity Aluminum Antimony Arsenic Barium Beryllium Bi- carbonate Alkalinity Boron Cadmium Calcium Carbonate Alkalinity Chloride Chromium Cr(III)/Cr(VI) Cobalt Copper DIS TOT DIS TOT DIS TOT DIS TOT DIS TOT DIS TOT DIS TOT TOT DIS TOT DIS TOT DIS TOT Reporting Units None S.U. Deg C umhos mg/I mV NTU mg/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I mg/I ug/I ug/I ug/I ug/I mg/I mg/I mg/I ug/I ug/I ug/I ug/I mg/I mg/I 15A NCAC 02B Standard NE NE NE NE NE NE 25 NE NE NE NE NE NE 10 NE NE NE NE NE NE NE NE NE NE NE 250 NE NE NE NE NE NE EPA Human Health NE NE NE NE NE NE NE NE NE 6500 NE 5.6 NE 0.018 NE 1000 NE NE NE NE NE NE NE NE NE NE NE NE NE 3 NE 1.3 Sample ID Sample Collection Date Field Parameters Analytical Results SW-85DS 06/11/2015 Anoxic 6.9 23 139 0.4 -205 NM 100 106 51400 <1 <1 1.57 5.56 73 524 <1 2.56 100 2120 2170 <1 <1 25.1 <10 31 <1 40.4 <1 60.1 <0.001 0.055 SW-BA1 05/20/2015 Mixed (oxic-anoxic) 6.5 20 370 7 -58 75.5 27 182 1600 <1 <1 1.04 1.54 70 84 <1 <1 27 <50 <50 <1 <1 13.8 <10 73 <1 <1 2.25 2.67 0.0016 0.0017 SW-BA1 DUP 05/20/2015 Mixed (oxic-anoxic) 6.5 20 370 7 -58 75.5 26 167 1810 <1 <1 1.06 1.S8 69 88 <1 <1 26 <50 <50 <1 <1 13.8 <10 72 <1 <1 2.08 2.79 0.0013 0.0017 SW-BA2 05/20/2015 Mixed (oxic-anoxic) 7.0 21 258 1.71 -220 58.4 45 126 685 <1 <1 1.17 1.92 50 77 <1 <1 45 358 361 <1 <1 10.6 <10 12 <1 <1 3.53 4.6 0.002 0.0019 SW-BBS 05/20/2015 Mixed (oxic-anoxic) 6.6 19 91 6.3 39 37.6 20 200 843 <1 <1 <1 <1 29 35 <1 <1 20 <50 <50 <1 <1 4.99 <10 9.6 <1 <1 <1 <1 0.0013 0,0012 SW-CFDG 06/11/2015 Mixed (oxic-anoxic) 6.6 27 175 7.41 87 18.4 34 153 298 <1 <1 <1 <1 19 23 <1 <1 34 <50 <50 <1 <1 7.99 <10 16 <1 <1 <1 <1 0.0018 0.0019 SW-CFDG DUP 06/11/2015 Mixed (oxic-anoxic) 6.6 27 1 175 7.41 87 18.4 33 153 266 <1 <1 I <1 <1 19 24 <1 <1 33 <50 <50 <1 <1 8.07 <10 16 <1 <1 <1 <1 0.002 0.0018 SW-DEEPR 06/11/2015 Mixed (oxic-anoxic) 7.1 27 150 6.66 89 16.6 27 198 346 <1 <1 <1 <1 19 21 <1 <1 27 <50 <50 <1 <1 7.37 <10 14 <1 <1 <1 <1 0.0022 0.002 SW -HAW 06/11/2015 Oxic 7.0 25 202 6.34 105 10 40 16 88 1.26 <1 <1 <1 22 25 <1 <1 40 63 50 <1 <1 9.33 <10 21 <1 <1 <1 <1 0.0012 0.0013 SW-SHD-56 05/19/2015 Mixed (oxic-anoxic) 6.7 23 219 3 25 20.4 34 112 511 <1 <1 <1 <1 28 33 <1 <1 34 <50 <50 <1 <1 8.74 <10 13 <1 <1 <1 <1 0.0018 0.0018 SW-SHD-PLANT 05/19/2015 Mixed (oxic-anoxic) 6.8 21 301 8.4 -199 31.3 110 143 348 <1 <1 1.4 1.74 85 95 <1 <1 110 61 67 <1 <1 15.1 <10 25 <1 1.02 2.51 2.77 0.002 0.0027 SWSSHD-REF 05/20/2015 Mixed (oxic-anoxic) 6.8 21 156 6.3 -18 187 37 247 5070 <1 <1 1.66 3.04 41 87 <1 <1 37 <50 <50 <1 <1 8.21 <10 16 <1 2.12 1.43 3.08 0.0018 0.0034 SW-UNT 05/19/2015 Mixed (oxic-anoxic) 7.3 24 549 6.9 39 10.2 83 46 211 <1 <1 <1 1.38 52 57 <1 <1 83 1040 1090 <1 <1 43.6 <10 17 <1 <1 <1 1.06 <0.001 0.0011 Human Health Screening Aluminum Antimony Arsenic Barium Beryllium Bi- Boron Cadmium Calcium Carbonate Chromium Cobalt Copper Level COPCs -- -- -- -- -- -- -- - carbonate Alkalinity Chloride Cr(III)/Cr(VI) Alkalinity DIS TOT DIS TOT DIS TOT DIS TOT DIS TOT DIS TOT DIS TOT TOT DIS TOT DIS TOT DIS TOT Detected Above EPA Human Health Surface Water -- -- -- -- -- -- -- -- 0 1 0 0 0 7 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 0 0 Screening Levels Detection Limit > EPA Human Health Surface -- -- -- -- -- -- -- -- 0 0 0 0 0 6 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Water Screening Level Detected Above NC ISA NCAC 02B Surface Water -- -- -- -- -- -- -- -- 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Screening Levels Detection Limit > NC 1SA NCAC 02B Surface Water -- -- -- -- -- -- -- -- 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Screening Level Coal Ash COP( NCAC 2B Surface Water conc. > the Screening Criteria Surface Water COP( No Yes No Yes No Yes No No No Yes No No Yes No Yes No No No No Yes No Yes No No Yes Yes Yes No No No No Yes Yes No Yes Yes' YesZ YesZ Yes' Yes No Yes No No No Yes No No No Yes No No Yes No Yes No No No No Yes No Yes No No Notes: - Bold highlighted concentration indicates greater than the EPA National Recommended Water Quality Criteria, Human Health, June 2015. u - Detection Limit is Greater Than the Surface Water Screeening Level - Bold highlighted concentration indicates greater than the 15A NCAC 02B, May 15, 2013 F__I -Detection Limit is Greater Than the Surface Water Screeening Level - Indicates support/rationale for surface water COPC attributable to coal ash. -Indicates constituent is not a surface water COPC attributable to coal ash. Deg C = Degree Celsius Spec Cond = Specific Conductance S.U. = Standard Unit ug/I = microgram per liter mg/I = milligrams per liter Temp = Temperature my = millivolts umhos/cm = micro mhos per centimeter NE = Not established NTU = nephelometric turbidity unit < = concentration not detected at or above the reporting limi DUP = duplicate Note 1: Consitituent is retained as a COPC if analytical method detection limit or concentration is greater than the surface water criteria Note 2: Constituent is retained as a COPC if no surface water criteria Prepared by: KDF Checked by: MMS P:\Duke Energy Progress.1026\103. Cape Fear Ash Basin GW Assessment\1.11 CSA Reporting\Tables\Table 12-5 Surface Water Anaytical Results.xlsx Page 1 of 2 TABLE 12-8 SURFACE WATER ANALYTICAL RESULTS WITH SCREENING CRITERIA - EPA RECOMMENDED WATER QUALITY CRITERIA AND 15A NCAC 2B STANDARDS HUMAN HEALTH CAPE FEAR ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, MONCURE, NC Analytical Parameter Iron Lead Magnesium Manganese Mercury Methane Molybdenum Nickel Nitrate (as N) Potassium Selenium Sodium Strontium Sulfate Sulfide Thallium Total Dissolved Solids Total Organic Carbon Total Suspended Solids Vanadium Zinc DIS TOT DIS TOT TOT DIS TOT TOT DIS TOT DIS TOT TOT DIS TOT TOT DIS TOT DIS TOT DIS TOT DIS TOT Reporting Units ug/l ug/I ug/l ug/I mg/l ug/l ug/I ug/l ug/l ug/l ug/l ug/l ug/l mg-N/L mg/l ug/l ug/l mg/l mg/l mg/l mg/l mg/l ug/l ug/l mg/l mg/l mg/l ug/l ug/l mg/l mg/l 15A NCAC 02B Standard NE NE NE NE NE NE NE NE NE NE NE NE 25 10 NE NE NE NE NE NE 250 NE NE NE 500 NE NE NE NE NE NE EPA Human Health NE NE NE NE NE NE NE NE NE NE 160 NE 610 NE NE NE 170 NE NE 14 NE NE NE 0.24 T 250 NE NE NE NE NE 7.4 Sample ID Sample Collection Date Analytical Results SW-85DS 06/11/2015 3080 94300 <1 35.1 17.9 1710 4340 0.00551 150 <1 <1 1.17 27.4 <0.01 1.96 <1 1.77 55.7 0.141 0.25 76 <0.2 <0.2 0.309 69 19 31000 4.24 107 <0.005 0.231 SW-BA1 05/20/2015 1210 5350 <1 2.47 8.63 3080 3300 0.0026 95 <1 <1 1.18 1.57 0.029 2.84 <1 <1 31.6 0.141 0.147 4.1 <0.5 <0.2 <0.2 260 21 64 0.494 2.33 0.052 0.008 SW-BAI DUP 05/20/2015 1140 6110 <1 2.57 8.59 3100 3410 0.00124 110 <1 <1 1.12 1.71 0.04 2.91 <1 <1 31.6 0.142 0.15 3.5 <0.5 <0.2 <0.2 250 21 130 0.384 2.31 0.164 0.011 SW-BA2 05/20/2015 2510 8910 1.55 8.84 5.66 2470 3300 0.00262 15 <1 <1 1.55 1.87 0.018 2.01 <1 <1 12.9 0.092 0.1 5.7 <0.1 <0.2 <0.2 150 22 25 1.29 4.31 0.04 0.018 SW-BB1 05/20/2015 561 1930 <1 <1 2.48 43 50 0,00468 26 <1 <1 <1 1.06 0.21 1.24 <1 <1 7.82 0.036 0.038 3.6 <0.1 <0.2 <0.2 82 5 10 0.306 1.39 0,013 <0.005 SW-CFDG 06/11/2015 378 790 <1 <1 3.57 29 126 0.0015 14 1.52 1.4 <1 1.12 0.619 3.76 <1 <1 16.1 0.067 0.065 12 <0.1 <0.2 <0.2 110 7.3 11 1.44 1.59 0.008 <0.005 SW-CFDG DUP 06/11/2015 377 765 <1 <1 3.59 27 154 0.0014 14 1.4 1.42 <1 1.03 0.674 3.77 <1 <1 16.2 0.067 0.064 12 <0.1 <0.2 <0.2 100 7.3 10 1.42 1.63 0.059 0.191 SW-DEEPR 06/11/2015 580 997 <1 <1 3.52 47 64 0.0019 19 <1 <1 <1 I <1 1 0,708 3.88 <1 I <1 1 13.2 0.059 1 0.056 12 <0.1 0,383 <0.2 100 7.4 7 1.71 1.93 0.008 <0.005 SW -HAW 06/11/2015 59 294 <1 <1 3.85 <5 208 <0.001 18 2.45 2.54 1.18 1.41 0.298 3.63 <1 <1 22.2 0.083 0.08 16 <0.1 <0.2 <0.2 120 6.3 6 0.698 1.1 <0.005 <0.005 SW-SHD-56 05/19/2015 369 1210 <1 <1 3.45 354 401 0.00288 21 1.17 <1 <1 <1 0.484 4.09 <1 <1 12.8 0.074 0.077 12 <0.1 <0.2 <0.2 100 7.8 14 0.698 2.39 0.009 <0.005 SW-SHD-PLANT 05/19/2015 1150 2530 <1 <1 4.91 1820 1910 0.00202 31 1.22 1.15 2.04 2.08 0.03 36 <1 <1 19.9 0.124 0.13 9 <0.1 <0.2 <0.2 230 37 12 0.696 2.43 0.016 0.014 SW-SHD-REF 05/20/2015 963 9180 <1 3.6 3.61 869 1150 0.00274 62 <1 <1 1.31 2.92 0.032 2.13 <1 <1 16.2 0.069 0.082 2 <1 <0.2 <0.2 140 19 150 0.698 7.82 0.021 0.016 SW-UNT 05/19/2015 67 534 <1 <1 19.6 3280 3420 0.000786 <10 3.03 2.83 1.89 2.13 0.078 2.56 <1 <1 31.2 0.275 0.292 140 <0.1 <0.2 <0.2 350 4.7 8 0.698 1.67 0,006 <0.005 Iron Lead Magnesium Manganese Mercury Molybdenum Nickel Nitrate Potassium Selenium Sodium Strontium Thallium Total Total Total Vanadium Zinc Human Health Screening Level COPCs (TOT) Methane Sulfate Sulfide Dissolved Organic Suspended (as N) Solids Carbon Solids DIS TOT DIS TOT TOT DIS TOT TOT DIS TOT DIS TOT TOT DIS TOT TOT DIS TOT DIS TOT DIS TOT DIS TOT Detected Above EPA Human Health Surface Water Screening Levels 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 2 0 0 0 0 0 0 Detection Limit > EPA Human Health Surface Water Screening Level 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Detected Above NC SSA NCAC 02B Surface Water Screening Levels 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Detection Limit > NC 15A NCAC 02B Surface Water Screening Level 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Coal Ash COP( NCAC 26 Surface Water conc. > the Screening Criteria Surface Water COP( No Yes No No No No Yes No No No Yes No Yes No No No No No No No Yes No No Yes Yes No No No Yes No Yes No No Yes Yes Yes Yes Yes No Yes YesZ YesZ No Yes No Yes Yes YesZ No No Yes No No No No Yes No No No I No No Yes No No No No No No No No No No I Yes Yes No No No Yes No No Notes: - Bold highlighted concentration indicates greater than the EPA National Recommended Water Quality Criteria, Human Health, June 2015. Detection Limit is Greater Than the Surface Water Screeening Level Bold highlighted concentration indicates greater than the 15A NCAC 02B, May 15, 2013. - Detection Limit is Greater Than the Surface Water Screeening Level - Indicates support/rationale for surface water COPC attributable to coal ash. no -Indicates constituent is not a surface water COPC attributable to coal ash. Deg C = Degree Celsius Spec Cond = Specific Conductance S.U. = Standard Unit ug/I = microgram per liter mg/I = milligrams per liter Temp = Temperature my = millivolts umhos/cm = micro mhos per centimeter NE = Not established NTU = nephelometric turbidity unit < = concentration not detected at or above the reporting limit. DUP = duplicate Note 1: Consitituent is retained as a COPC if analytical method detection limit or concentration is greater than the surface water criteria Note 2: Constituent is retained as a COPC if no surface water criteria Prepared by: KDF Checked by: MMS P:\Duke Energy Progress.1026\103. Cape Fear Ash Basin GW Assessment\1.11 CSA Reporting\Tables\Table 12-5 Surface Water Anaytical Results.xlsx Page 2 of 2 TABLE 12-9 SEEP ANALYTICAL RESULTS WITH SCREENING CRITERIA - EPA RECOMMENDED WATER QUALITY CRITERIA AND 15A NCAC 2B STANDARDS HUMAN HEALTH CAPE FEAR STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, MONCURE, NC Spec Aluminum Antimony Arsenic Barium Beryllium Bi- Boron Cadmium Calcium Carbonate Chromium Cobalt Copper Analytical Parameter Redox Assignment pH Temp DO ORP Turbidity Alkalinity carbonate Chloride Cr(III)/Cr(VI) Cond Alkalinity Alkalinity DIS TOT DIS TOT DIS I TOT DIS TOT DIS TOT DIS TOT DIS TOT TOT DIS TOT DIS TOT DIS TOT Reporting Units None S.U. Deg C u mhos mg mV NTU mg/I ug/I ug/1 ug/I ug/1 ug/l ug/1 ug/l ug/I ug/I ug/I mg/l ug/l ug/1 ug/l ug/1 mg/1 mg/I mg/l ug/I ug/l ug/l ug/l mg/I mg/l SSA NCAC 02B Standard NE NE NE NE NE NE 25 NE NE NE NE NE NE 10 NE NE NE NE NE NE NE NE NE NE NE 250 NE NE NE NE NE NE EPA Human Health NE NE NE NE NE NE NE NE NE 6500 NE 5.6 NE 0.018 NE 1000 NE NE NE NE NE NE NE NE NE NE NE NE NE 3 NE 1.3 Sample Sample ID Collection Date Field Parameters Analytical Results S-04 06/11/2015 Anoxic 7.0 21 1 768 1 0.2 1 -2791 NM 180 70 134000 <1 <10 5.08 408 79 3620 <1 83.1 180 5050 6730 <1 29.4 148 <10 22 <1 69.4 <1 763 0,00117 0,467 S-09 05/20/2015 Mixed(oxic-anoxic) 6.8 24 508 2.9 -286 18.7 110 10 132 <1 <1 <1 <1 51 56 <1 <1 110 3710 3790 <1 <1 36.9 <10 21 <1 <1 <1 1.4 <0.001 <0.001 S-10 06/11/2015 Mixed(oxic-anoxic) 7.0 23 431 0.7 -202 148 130 178 2740 <1 <1 1.36 2.64 57 119 <1 <1 130 1540 1530 <1 <1 18.7 <10 32 <1 1.91 1.14 3.2 <0.001 0.00265 S-16 06/11/2015 Anoxic 2.9 24 2700 0.39 270 55.6 <10 7050 3760 <1 <1 19.9 118 19 21 31.4 14.4 <10 724 553 <1 <1 314 <10 10 <1 <1 361 272 0.00104 0.00106 Human Health Screening Aluminum Antimony Y Arsenic Barium Beryllium Y Bi- Boron Cadmium Calcium Carbonate Chromium Cobalt Copper PP Level COPCs -- -- -- -- -- -- - _ - - carbonate Alkalinity Alkalinity Chloride Cr(III)/Cr(VI) DIS TOT DIS TOT DIS TOT DIS TOT DIS TOT DIS TOT DIS TOT TOT DIS TOT DIS TOT DIS TOT Detected Above EPA Human Health Surface Water -- -- -- -- -- -- -- -- 0 4 0 0 0 3 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 3 0 0 Screening Levels Detection Limit > EPA Human Health Surface Water -- -- -- -- -- -- -- -- 0 0 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Screening Level Detected Above INC5A NCAC 02B Surface Water Screening -- -- -- -- -- -- -- -- 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Levels Detection Limit > NC 15A NCAC 02B Surface Water -- -- -- -- -- -- -- -- 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Screening Level Coal Ash COPC 15A NCAC 2B Standard Seep conc. > the Screening Criteria Seep COPC No Yes No Yes No Yes No No No Yes No No Yes No Yes No No No No Yes No Yes No No Yes Yes Yes No No No No Yes Yes Yes' Yes Yes' Yes' Yes' I Yes Yes I No Yes I No Yes No Yes No No No Yes No No Yes No Yes No No No No Yes No Yes No No Prepared by: KDF Checked by: MMS Notes: C- Bold highlighted concentration indicates greater than the EPA National Recommended Water Quality Criteria, Human Health, June 2015 �. -Detection Limit Greater Than The Surface Water Screeening Level Bold highlighted concentration indicates greater than the 15A NCAC 02B, May 15, 2013. Note 1: Consitituent is retained as a COPC if analytical method detection limit or concentration is greater than the surface water criteria - Detection Limit Greater Than The Surface Water Screeening Level Note 2: Constituent is retained as a COPC if no surface water criteria Te5 I -Indicates support/rationale for seep water COPC attributable to coal ash. - Indicates constituent is not a seep water COPC attributable to coal ash. Deg C = Degree Celsius Spec Cord = Specific Conductance S.U. = Standard Unit ug/I = microgram per liter mg/I = milligrams per liter Temp = Temperature my = millivolts umhos/cm = micro mhos per centimeter NE = Not established NTU = nephelometric turbidity unit < = concentration not detected at or above the reporting limit. P:\Duke Energy Progress. 1026\103. Cape Fear Ash Basin GW Assessment\1.11 CSA Reporting\Tables\Table 12-9 Seep Anaytical Results.xlsx Page 1 of 2 TABLE 12-9 SEEP ANALYTICAL RESULTS WITH SCREENING CRITERIA - EPA RECOMMENDED WATER QUALITY CRITERIA AND 15A NCAC 2B STANDARDS HUMAN HEALTH CAPE FEAR STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, MONCURE, NC Analytical Parameter Iron Lead Magnesium Manganese Mercury Methane Molybdenum Nickel Nitrate (as N) Potassium Selenium Sodium Strontium Sulfate Sulfide Thallium Total Dissolved Solids Total Organic Carbon Total Suspended Solids Vanadium Zinc DIS TOT DIS TOT TOT DIS TOT TOT DIS TOT DIS TOT TOT DIS TOT TOT DIS TOT DIS TOT DIS TOT DIS TOT Reporting Units ug/I ug/I ug/I ug/I mg/l ug/I ug/I ug/I ug/I ug/l ug/I ug/l ug/I mg-N/L mg/1 ug/l ug/I mg/I mg/I mg/I mg/I mg/l ug/I ug/I mg/I mg/I mg/I ug/I ug/I mg/I mg/I ISA NCAC 02B Standard NE NE NE NE NE NE NE NE NE NE NE NE 25 10 NE NE NE NE NE NE 250 NE NE NE 500 NE NE NE NE NE NE EPA Human Health NE NE NE NE NE NE NE NE NE NE 160 NE 610 NE NE NE 170 NE NE 14 NE NE NE 0.24 250 NE NE NE NE NE 7.4 Sample ID Sample Collection Date Analytical Results S-04 06/11/2015 30300 3100000 <1 76.2 59 1770 27100 0.00682 180 1.04 <10 3.48 519 <0.01 2.39 <1 10.6 39.6 0.405 1.97 150 <0.1 <0.2 5.13 51 93 15000 <0.3 217 0.013 5.97 S-09 05/20/2015 297 596 <1 <1 23.6 2260 2360 0.00267 42 <1 <1 4.06 4.29 0.041 1.19 <1 <1 30.6 0.301 0.315 99 <0.5 <0.2 <0.2 360 7.5 180 <0.3 0.739 <0.005 0.008 5-10 06/11/2015 1910 15600 <1 1.95 12.4 3070 3910 0.0105 110 <1 <1 1.63 2.67 <0.01 2.87 <1 <1 47.1 0.152 0.167 19 <0.2 <0.2 <0.2 <25 24 940 1.95 9.31 0.015 0.012 Si 06/11/2015 249000 1 257000 <1 <1 78.7 25400 18800 <0.001 13 <1 2.99 352 206 <0.01 31.2 <1 <1 28 6.28 5.01 2700 <0.5 0.255 0.417 2600 0.976 190 <0.3 3.09 0.802 0.599 Iron Lead Magnesium Manganese Mercury Molybdenum Nickel Nitrate Potassium Selenium Sodium Strontium Thallium Total Total Total Vanadium Zinc Human Health Screening Level COPCs Methane (as N) Sulfate Sulfide Dissolved Organic Suspended Solids Carbon Solids DIS TOT DIS TOT TOT DIS TOT TOT DIS TOT DIS TOT TOT DIS TOT TOT DIS TOT DIS TOT DIS TOT DIS TOT Detected Above EPA Human Health Surface Water Screening Levels 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2 0 0 0 0 0 0 Detection Limit > EPA Human Health Surface Water Screening Level 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Detected Above NC 15A NCAC 02B Surface Water Screening Levels 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 0 0 1 0 0 0 1 0 0 0 0 0 0 Detection Limit > NC 15A NCAC 02B Surface Water Screening Level 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Coal Ash COPC 15A NCAC 26 Standard Seep conc. > the Screening Criteria Seep COPC Notes: C u No Yes No No No No Yes No No No Yes No Yes No No No No No No No Yes No No Yes Yes No No No Yes No Yes No No Yes Yes Yes Yes Yes No Yes Yes2 I Yes2 I No Yes �No Yes Yes Yes I Yes No No Yes No No No No I Yes No No No No No Yes No No No No No No Yes No No Yes Yes No No No Yes No I No - Bold highlighted concentration indicates greater than the EPA National Recommended Water Quality Criteria, Human Health, June 2015. - Detection Limit Greater Than The Surface Water Screeening Level Bold highlighted concentration indicates greater than the 15A NCAC 02B, May 15, 2013. Detection Limit Greater Than The Surface Water Screeening Level T- - Indicates support/rationale for seep water COPC attributable to coal ash. - Indicates constituent is not a seep water COPC attributable to coal ash. Deg C = Degree Celsius Spec Cord = Specific Conductance S.U. = Standard Unit ug/I = microgram per liter mg/I = milligrams per liter Temp = Temperature my = millivolts umhos/cm = micro mhos per centimeter NE = Not established NTU = nephelometric turbidity unit < = concentration not detected at or above the reporting limit. Note 1: Consitituent is retained as a COPC if analytical method detection limit or concentration is greater than the surface water criteria Note 2: Constituent is retained as a COPC if no surface water criteria Prepared by: KDF Checked by: MMS P:\Duke Energy Progress. 1026\103. Cape Fear Ash Basin GW Assessment\1. 11 CSA Reporting\Tables\Table 12-9 Seep Anaytical Results.xlsx Page 2 of 2 TABLE 12-10 MATRIX FOR DETERMINATION OF CONSTITUENTS OF POTENTIAL CONCERN - HUMAN HEALTH CAPE FEAR STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, MONCURE, NC Analytical Parameter Aluminum Antimony Arsenic Barium Beryllium Boron Cadmium Calcium Chloride Chromium Hexavalent Chromium Cobalt Copper Iron Lead Magnesium Manganese Mercury Molybdenum Nickel Nitrate (as N) Potassium Selenium Sodium Strontium Sulfate Thallium Total Dissolved Solids Vanadium Zinc Medium/Basis for COPC Designation Ash Pore Water Concentration exceeds screening value ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ Analytical detection limit exceeds screening value No screening value ✓ ✓ Surficial Groundwater Concentration exceeds screening value ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ Analytical detection limit exceeds screening value No screening value ✓ ✓ Bedrock Groundwater Concentration exceeds screening value ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ Analytical detection limit exceeds screening value No screening value ✓ ✓ Soil Concentration exceeds screening value ✓ ✓ NE ✓ ✓ ✓ NA ✓ Analytical detection limit exceeds screening value ✓ ✓ NE ✓ NA No screening value ✓ NE ✓ NA Sediment Concentration exceeds screening value ✓ ✓ NE ✓ ✓ ✓ NA ✓ Analytical detection limit exceeds screening value ✓ ✓ NE ✓ NA No screening value ✓ NE ✓ NA Surface Water Concentration exceeds screening value ✓ ✓ NE ✓ ✓ ✓ ✓ Analytical detection limit exceeds screening value ✓ NE No screening value ✓ ✓ ✓ ✓ NE ✓ ✓ ✓ Seep Water Concentration exceeds screening value ✓ ✓ ✓ NE ✓ ✓ ✓ ✓ ✓ Analytical detection limit exceeds screening value ✓ ✓ NE No screening value ✓ ✓ ✓ ✓ NE ✓ ✓ ✓ Prepared by: VTV Checked by: MMS Notes: Coal ash COPC (See Table 12-2) Constituent determined to be a human health COPC potentially attributable to coal ash. Constituent not determined to be a human health COPC potentially attributable to coal ash. Hexavalent chromium (Cr`s) is a human health COPC but ash pore water data to date suggest that Cr" in groundwater is not attributable to coal ash (7-10). NA = Not applicable NE = Not evaluated P:\Duke Energy Progress. 1026\103. Cape Fear Ash Basin GW Assessment\1.11 CSA Reporting\Tables\Table 12-10 Matrix Determin COPCs - HH.xlsx Page 1 of 1 TABLE 12-11 THREATENED AND ENDANGERED SPECIES CHATHAM COUNTY, NORTH CAROLINA CAPE FEAR STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, MONCURE, INC Species Protection Status Habitat Requirements Taxonomic Group Common Name Scientific Name State Federal (USFWS) Record Status Triangle Floater Alasmidonta undulata (syn. ) T Current Roanoke, Chowan, Tar, Neuse, Cape Fear drainages Brook Floater Alasmidonta varicosa (syn. ) E FSC Current along Blue Ridge escarpment of Catawba and Yadkin --Pee Dee drainages; Cape Fear drainage Box Spike Elliptio cistellaeformis W3,W5 Current Neuse, Lumber, Pee Dee drainages; Lake Waccamaw Carolina Slabshell Elliptio congaraea W2,W5 Current drainages north to the White Oak drainage Atlantic Spike Elliptio producta W3,W5 Current many Atlantic drainages; very difficult to identify Roanoke Slabshell Elliptio roanokensis (syn. Elliptio judithae) T Current Roanoke, Tar, Neuse, White Oak, Cape Fear, Lumber, and Yadkin --Pee Dee drainages v Atlantic Pigtoe Fusconaia masoni (syn.) E FSC Current Roanoke, Tar, Neuse, Cape Fear, Yadkin --Pee Dee drainages i Yellow Lampmussel Lampsilis cariosa (syn.) E FSC Current Chowan, Roanoke, Neuse, Tar, Cape Fear, Lumber, Yadkin --Pee Dee drainages m Eastern Lampmussel Lampsilis radiata (syn.) T Current Chowan, Roanoke, Tar, Neuse, Cape Fear, Yadkin --Pee Dee drainages Creeper Strophitus undulatus (syn.) T Current Roanoke, Tar, Neuse, Cape Fear, Yadkin --Pee Dee, Catawba, Broad, and French Broad drainage Savannah Lilliput Toxolasma pullus (syn.) E FSC Current Cape Fear, Lumber, and Yadkin --Pee Dee drainages Notched Rainbow Villosa constricta (syn.) SC lCurrent Roanoke, Tar, Neuse, Yadkin --Pee Dee, and Catawba drainages Eastern Creekshell Villosa delumbis (syn.) SR Current Cape Fear, Lumber, Yadkin --Pee Dee, and Catawba drainages Carolina Creekshell Villosa vaughaniana (syn.) E FSC Current Cape Fear, Yadkin --Pee Dee, and Catawba drainages (endemic to North Carolina and adjacent N L 9 N U Carolina Ladle Crayfish Cambarus davidi (syn.) SR Current Neuse and Cape Fear drainages (endemic to North Carolina) N O e N Panhandle Pebblesnail Somatogyrus virginicus (syn.) SR FSC Current Eno River Leonard's Skipper Hesperia leonardus W2 Current wooded borders and openings, brushy fields; host plants -- grasseE Cobweb Skipper Hesperia metea W2 Current dry barren sites, such as powerline clearings and pine/oak sandhills; host plants -- mainly broomsed a <i>Andro 0 on< i> Helicta Satyr Neonympha helicta (syn.) SR Current sedgy wetlands, including sandhi[] seeps, pocosin ecotones, and drained beaver ponds in the Sandhills, low pocosins in the northeast Coastal Plain, and wet open swales in the Piedmont; host plants -- sedges (Alamance*, Anson, Beaufort, Bertie*, Chatham*, Cumberland, Dare, Durham*, Gaston*, Gates*, Granville, Halifax, Harnett, Hoke, Hyde, Martin*, Moore, Pitt, Checkered White Pontia protodice (syn.) SR Current fields, pastures; host plants -- mustard species (Family Brassicaceae) Confused Cloudywing Thorybes confusis W3 Current dry woodland borders and openings, brushy fields; host plants -- legumes Li u Robust Baskettail Epitheca spinosa W3 Current ponds and lakes Spine -crowned Clubtail Gomphus abbreviatus (syn.) SR Current rivers Banner Clubtail Gomphus apomyius W3 Current spring -fed streams Blackwater Clubtail Gomphus dilatatus W3 Current rivers Rapids Clubtail Gomphus quadricolor (syn.) SR Current rocky rivers Septima's Clubtail Gomphus septima (syn.) SR FSC Current rocky rivers Cinnamon Shadowdragon Neurocordulia virginiensis W3 Current large rivers Coppery Emerald Somatochlora georgiana (syn.) SR Current creeks and other slow -moving acidic streams, in forested areas a ma fl Choroter es basalis (syn.) SR Current Waccamaw River DrowningCreek Bear Creek Lanes Creek UT Laurens Creek DutchmanE Magdalen Underwing Catocala illecta W3 Current habitats not known Honey Locust Moth Sphingicampa bicolor W3 Current on honey locust (Gleditsia ) A Liverwort Plagiochila undata W7 Historical on rocks or bark N i Knothole Moss Anacamptodon splachnoides W7 Historical bark of trees > C A Thread Cedar Moss Cryphaea raveneiii W7 Historical on bark of trees e a A Cord Moss Funaria serrata W7 Historical on soil of disturbed places, near streams or ditches Z Fernmoss Thuidium allenii W7 Historical on soil logs, exposed roots and tree bases in swamps, often iust above water line Thin -pod White Wild Indigo Baptisia albescens W1 Historical open woodlands, clearings Fescue Sedge Carex festucacea W7 Current piedmont swamp forests, bogs, upland depression swamps Velvet Sedge Carex vestita (syn.) SC-H Historical low woods Piedmont Horsebalm Collinsonia tuberosa (syn.) SC-V Current rich hardwood forests Autumn Coral -root Corallorhiza odontorhiza Wl Historical forests Dutchman's Breeches Dicentra cucullaria W6 Historical rich, moist forests Ringed Witch Grass Dichanthelium annulum (syn.) SR-P Historical dry sandy or rocky open woods and borders of thickets Leatherwood Dirca palustris W1 Historical rich woods, either alluvial or over mafic or calcareous rocks Purple Coneflower Echinacea purpurea (syn.) SC-V Current open woods and clearings Eastern Isopyrum Enemion biternatum (syn.) SC-V Historical rich bottomlands, levees, and lower slopes Tall Boneset Eupatorium altissimum Wl Current woodlands, openings, and old fields over mafic rocks Showy Aster Eurybia spectabilis (syn.) SR-0 Current pine barrens and woodland borders Large Witch -alder Fothergilla major (syn.) SR-T Current dry ridgetop or bluff forests, seepage wetlands, and Piedmont longleaf pine forests Indian Physic Gillenia stipulata (syn.) T H istorica 11 forests and open woods, mainly over mafic rocks Lewis's Heartleaf Hexastylis lewisii Wl Current mesic mixed hardwood forests, streamhead pocosin ecotones c 0 a Virginia Quillwort Isoetes virginica (syn.) SR-L FSC Historical upland depression swamp forests, clayey soils `m Whiteroot Rush Juncus brachycarpus W7 Historical wet sandy soil N Two -flower Cynthia Krigia biflora W7 Historical rich mesic woods > Catchfly Cutgrass Leersia lenticularis (syn.) SR-P Current low woods Bog Spicebush Lindera subcoriacea (syn.) SR-T FSC ICUrrent streamhead pocosins, white cedar swamps, seepage slopes Sweet Pinesap Monotropsis odorata (syn.) SC-V FSC Current dry forests and bluffs Horsetail Crown Grass Paspalum fluitans (syn.) SR-P Historical drawdown riverbanks and seepage areas in swamp forests Buttercup Phacelia Phacelia covillei (syn.) SR-T FSC Current bottomlands, rich lower slopes Eastern White Pine Pinus strobus W6 Historical dry to moist woods and old fields Harperella Ptilimnium nodosum (syn.) E E Current rocky riverbeds Chinquapin Oak Quercus muehlenbergii Wl I Current calcareous forsts and bluffs Pin Oak Quercus palustris W1 Historicall swamps Three -square Bulrush Schoenoplectus pungens W6 Historical marshes and rocky river bottoms Veined Skullcap Scutellaria nervosa (syn.) E Historical alluvial forests A Heartleaf Skullcap Scutellaria ovata ssp. bracteata W7 Historical rich woods on circumneutral soil Hemlock Water -parsnip Sium suave W6 Historical fresh or brachish marshes, swamps and creek margins Appalachian Golden -banner Thermopsis mollis (syn.) SC-V Historical dry ridges and open woodlands Buffalo Clover Trifolium reFlexum (syn.) T Historical open woods and clearings d Oak Toad Anax rus quercicus (syn.) SR Current pine flatwoods and savannaspine sandhills where near water (many records not yet entered a Four -toed Salamander Hemidactylium scutatum (syn.) SC Current pools, bogs, and other wetlands in hardwood forests v c ti e Grassho pper Sparrow lAnhinga JAmmodramus savannarum W1,W5 Current 1pastures and other grasslands [breeding season only] > Anhin a anhin a W2 Current 1wooded lakes or ponds, or open swamps for nesting) [breeding evidence only] Species Protection Status Habitat Requirements Taxonomic Group Common Name Scientific Name State Federal (USFWS) Record Status Bald Eagle Haliaeetus leucocephalus (syn.) T BGPA Current mature forests near large bodies of water (for nesting); lakes and sounds (for foraging) [nesting sites only] Loggerhead Shrike Lanius ludovicianus W2 SC Current fields and pastures rbreeding season only] Hooded Merganser Lo hod tes cucullatus W3 Current lakes and ponds, with dead trees for nesting breedin evidence only Bachman's Sparrow Peucaea aestivalis (syn.) SC FSC Current open longleaf pine forests old fields rbreeding season only Double -crested Cormorant Phalacrocorax auritus (syn.) SR Current lakes with scattered trees coastal sand bars for nesting) breedin sites only' Red -cockaded Woodpecker Picoides borealis (syn.) E E Historical mature open pine forests mainly in longleaf pine rbreeding evidence only King Rail Rallus ele ans Wl W3 Current fresh to slightly brackish marshes fbireeding season only' m Roanoke Bass Amblo ltes cavifrons (syn.) SR FSC Current streams in Neuse and Tars stems Carolina Darter Etheostoma Collis(syn.)SC FSC Current Roanoke Tar Neuse Cape Fear Yadkin --Pee Dee and Catawba drainage! a r Fantail Darter Etheostoma flabellare WS Current Cape Fear, Neuse, and Tar drainages populations have limited distribution; Pee Dee, Roanoke, New, and French Broad populations stable > Carolina Redhorse Moxostoma sp. 3 (syn. Moxostoma sp. cf. athrurum) T FSC Current Cape Fear and Pee Dee drainages Cape Fear Shiner Notro is mekistocholas (syn.) E E Current Cape Fear drainage endemic to North Carolina` Long-tailed Weasel Mustela frenata W3 Current forests brushy areas Eastern Fox Squirrel Sciurus ni er W2 Current open forests mainly longleaf pine/scrub oaN Slender Glass Lizard Ophisaurus attenuatus (syn.) SR Historical old fields, wooded edges, open woods (Beaufort, Bertie, Bladen, Brunswick, Chatham, Cherokee, Chowan, Clay, Columbus, Durham, Edgecombe, Franklin, Gates, Halifax, Harnett, Iredell, Johnston Lenoir. Oran a Pitt Stanly. Vance Wake Warren Wilson Smooth Earthsnake Virginia valeriae W2 Current deciduous or mixed woods usually in mesic soils P:\Duke Energy Progress.1026\103. Cape Fear Ash Basin GW Assessment\1.11 CSA Reporting\Tables\Table 12-11 ME Chatham County.xlsx Page 1 of 2 TABLE 12-11 THREATENED AND ENDANGERED SPECIES CHATHAM COUNTY, NORTH CAROLINA CAPE FEAR STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, MONCURE, NC A� n 'c E Colonial Wading Bird Colony (syn.) Current m Basic Mesic Forest Piedmont Subtype) (syn. Current Dry Basic Oak --Hickory Forest (syn. Current Dry Oak --Hickory Forest (Piedmont Subtype) (syn. Dry-Mesic Basic Oak --Hickory Forest Piedmont Subt e s n. Dry-Mesic Oak --Hickory Forest (Piedmont Subt e s n.Flood lain Pool s n. durren Low Elevation Seep (Floodplain Subtype) s n.Low Elevation See T is Subt e s n. ' Mesic Mixed Hardwood Forest (Piedmont Subt e s n.Mixed Moisture Hard an Forest s n. Piedmont Acidic Glade s n. Piedmont Alluvial Forest (syn. Current Piedmont Boggy Streamhead (syn. ` Current Piedmont Bottomland Forest (High Subtype) Current (syn. v Piedmont Bottomland Forest (Typic Low Subtype) (syn. Current Piedmont Headwater Stream Forest (Typic Current E Subtype) (syn. $ Piedmont Levee Forest (Typic Subtype) (syn. Current Piedmont Monadnock Forest (Typic Subtype) i Current s n. z Piedmont Swam Forest s n. Current Piedmont Coastal Plain Heath Bluff s n. Current Piedmont/Mountain Semipermanent Impoundment (Open Water Subtype) s n. Current Piedmont/Mountain Semipermanent Impoundment (Piedmont Marsh Subtype) Current (syn. Piedmont/Mountain Semipermanent Impoundment Shrub Subtype) s n. ' Current Rocky Bar and Shore (Mixed Bar Subtype) Current (syn. Rocky Bar and Shore (Southern Wild Rice Subtype) s n. Current Rocky Bar and Shore (Water Willow Subtype) s n. Current Upland De ression Swam Forest s n. Current Upland Pool T is Piedmont Subtype) s n. Current Xeric Hardpan Forest (Acidic Hardpan Subt e s n. Current Xeric Hardpan Forest (Basic Hardpan Subt e) ((syn. Current Prepared by: MMS Checked by: RKD http://porta1.ncdenr.org/web/nhp/database-search US FWS Updated: 3-25-2015 https://www.fws.gov/raleigh/species/cntylist/chatham.html Definitions of Federal Status Codes: E = endangered. A taxon "in danger of extinction throughout all or a significant portion of its range." T = threatened. A taxon "likely to become endangered within the foreseeable future throughout all or a significant portion of its range." C = candidate. A taxon under consideration for official listing for which there is sufficient information to support listing. (Formerly "Cl" candidate species.) BGPA =Bald and Golden Eagle Protection Act. See below. FSC=Federal Species of Concern. FSC is an informal term. It is not defined in the federal Endangered Species Act. In North Carolina, the Asheville and Raleigh Field Offices of the US Fish and Wildlife Service (Service) define Federal Species of Concern as those species that appear to be in decline or otherwise in need of conservation and are under consideration for listing or for which there is insufficient information to support listing at this time.Subsumed under the term "FSC" are all species petitioned by outside parties and other selected focal species identified in Service strategic plans, State Wildlife Action Plans, or Natural Heritage Program Lists. T(S/A) = threatened due to similarity of appearance. A taxon that is threatened due to similarity of appearance with another listed species and is listed for its protection. Taxa listed as T(S/A) are not biologically endangered or threatened and are not subject to Section 7 consultation. See below. EXP = experimental population. A taxon listed as experimental (either essential or nonessential). Experimental, nonessential populations of endangered species (e.g., red wolf) are treated as threatened species on public land, for consultation purposes, and as species proposed for listing on private land. P = proposed. Taxa proposed for official listing as endangered or threatened will be noted as "PE" or "PT", respectively. Bald and Golden Eaale Protection Act (BGPA): In the July 9, 2007 Federal Register( 72:37346-37372), the bald eagle was declared recovered, and removed (de -listed) from the Federal List of Threatened and Endangered wildlife. This delisting took effect August 8,2007. After delisting, the Bald and Golden Eagle Protection Act (Eagle Act) (16 U.S.C. 668-668d) becomes the primary law protecting bald eagles. The Eagle Act prohibits take of bald and golden eagles and provides a statutory definition of "take" that includes "disturb". The USFWS has developed National Bald Eagle Management Guidelines to provide guidance to land managers, landowners, and others as to how to avoid disturbing bald eagles. For mor information, visit http://www.fws.gov/migratorybirds/baideagle.htm Threatened due to similarity of aooearance(T(S/A)1: In the November 4, 1997 Federal Register (55822-55825), the northern population of the bog turtle (from New York south to Maryland) was listed as T (threatened), and the southern population (from Virginia south to Georgia) was listed as T(S/A) (threatened due to similarity of appearance). The T(S/A) designation bans the collection and interstate and international commercial trade of bog turtles from the southern population. The T(S/A) designation has no effect on land management activities by private landowners in North Carolina, part of the southern population of the species. In addition to its official status as T(S/A), the U.S. Fish and Wildlife Service considers the southern population of the bog turtle as a Federal species of concern due to habitat loss. Definitions of Record Status: Current - the species has been observed in the county within the last 50 years. Historic - the species was last observed in the county more than 50 years ago. Obscure - the date and/or location of observation is uncertain. Incidental/migrant - the species was observed outside of its normal range or habitat. Probable/potential - the species is considered likely to occur in this county based on the proximity of known records (in adjacent counties), the presence of potentially suitable habitat, or both. Definition of State Codes: CODE/ STATUS DEFINITION E=Endangered Any native or once -native species of wild animal whose continued existence as a viable component of the State's fauna is determined by the Wildlife Resources Commission to be in jeopardy or any species of wild animal determined to be an 'endangered species' pursuant to the Endangered Species Act. (Article 25 of Chapter 113 of the General Statutes; 1987). T=Threatened Any native or once -native species of wild animal which is likely to become an endangered species within the foreseeable future throughout all or a significant portion of its range, or one that is designated as a threatened species pursuant to the Endangered Species Act. (Article 25 of Chapter 113 of the General Statutes; 1987). SC=Special Concern Any species of wild animal native or once -native to North Carolina which is determined by the Wildlife Resources Commission to require monitoring but which may be taken under regulations adopted under the provisions of this Article. (Article 25 of Chapter 113 of the General Statutes; 1987). Any species which has not been listed by the N.C. Wildlife Resources Commission as an Endangered, Threatened, or Special Concern species, but which exists in the state (or recently occurred in the state) in SR=Significantly Rare small numbers and has been determined by the N.C. Natural Heritage Program to need monitoring. Significantly Rare species include "peripheral" species, whereby North Carolina lies at the periphery of the species' range (such as Hermit Thrush), as well as species of historical occurrence with some likelihood of re -discovery in the state. Species considered extirpated in the state, with little likelihood of re- discovery, are given no N.C. Status (unless already listed by the N.C. Wildlife Resources Commission as E, T, or SC). SR-G=Game Animal Species is a game animal or a furbearer, and therefore (by law) cannot be listed for State protection as E, T, or SC. SC-V=Special Concern -Vulnerable "Any species or higher taxon of plant which is likely to become a threatened species within the foreseeable future"(NCAC 02 NCAC 48F .0401). SC-H=Special Concern -Historical "Any species or higher taxon of plant that occurred in North Carolina at one time, but for which all known populations are currently considered to be either historical or extirpated." "(NCAC 02 NCAC 48F .0401). SR-L= Significantly Rare Limited The range of the species is limited to North Carolina and adjacent states (endemic or near endemic). These are species that may have 20-50 populations in North Carolina, but fewer than 100 populations rangewide. The preponderance of their distribution is in North Carolina and their fate depends largely on conservation here. SR-T=Significantly Rare The species is rare throughout its range (fewer than 100 populations total). Thrnuahnut SR-D=Significantly Rare Disjunct The species is disjunct to North Carolina from a main range in a different part of the country or world. SR-P=Significantly Rare The species is at the periphery of its range in North Carolina. These species are generally more common somewhere else in their ranges, occurring in North Carolina peripherally to their main ranges, mostly in Peripheral habitats which are unusual in North Carolina. SR-O=Significantly Rare Other The range of the species is sporadic or cannot be described by the other Significantly Rare categories W= Watch List Any other species believed to be rare and of conservation concern in the state but not warranting active monitoring at this time P:\Duke Energy Progress.1026\103. Cape Fear Ash Basin GW Assessment\l.11 CSA Reporting\Tables\Table 12-11 T&E Chatham County.xlsx Page 2 of 2 TABLE 12-12 SURFACE WATER AND SEEPS ANALYTICAL RESULTS EPA AND 15A NCAC 2B RECOMMENDED WATER QUALITY CRITERIA FOR AQUATIC LIFE (ACUTE AND CHRONIC) CAPE FEAR STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, MONCURE, NC Analytical Parameter Redox Assignment pH Temp Spec Cond DO ORP Eh Turbidity Alkalinity Aluminum Antimony Arsenic Barium Beryllium Bi- carbonate Alkalinity Boron Cadmium' Calcium Carbonate Alkalinity Chloride Chromium** Cobalt Copper" Iron Lead* DIS T TOT DIS TOT DIS TOT DIS TOT DIS TOT DIS TOT DIS TOT TOT DIS TOT DIS TOT DIS TOT DIS TOT DIS TOT Reporting Units None S.U. Deg C u/cros mg/I my my NTU mg/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I mg/I ug/I ug/I ug/I ug/I mg/I mg/I mg/I ug/I ug/I ug/l ug/I mg/I mg/I ug/I ug/I ug/I ug/I EPA R4 FV1 Chronic NE 6.5-9 NE NE NE NE NE NE NE NE 87 160 NE 190* NE NE NE 0.53 NE NE 750 NE 0.66 NE NE NE 230 11 11 NE NE 0.00654 NE 1000 NE 1.32 NE EPA Aquatic Life Acute NE NE NE NE NE NE NE NE NE NE 750 NE NE 340 NE NE NE NE NE NE NE NE 2 NE NE NE 860.0001 16 16 NE NE 1.3 NE NE NE 65 NE EPA Aquatic Life Chronic NE 6.5-9 NE NE NE NE NE NE NE NE 87 NE NE 150 NE NE NE NE NE NE NE NE 0.25 NE NE NE 230 11 1 11 NE NE 1.3 NE 1000 NE 2.5 NE 15 NCAC 2B Aquatic Life Acute NE 6-9 NE NE NE NE NE NE NE NE NE NE NE 340 NE NE NE 65 NE NE NE NE 0.82 NE NE NE NE NE NE NE NE 0.0036 NE NE NE 14 NE 15 NCAC 2B Aquatic Life Chronic NE 6-9 NE NE NE I NE NE NE NE NE NE NE NE 150 NE NE NE 6.5 NE NE NE NE 0.15 NE NE NE NE NE NE NE NE 0.0027 NE NE NE 0.54 NE Sample ID Sample Collection Date Field Parameters Analytical Results 5-04 06/11/201S Anoxic 7.0 21 768 0.2 -279 -74 NM 180 70 134000 <1 <10 5.08 408 79 3620 <1 83.1 180 5050 6730 <1 29.4 148 <10 22 <1 69.4 <1 763 0.00117 0.467 30300 3100000 <1 76.2 d 5-09 O5/20/2015 Mixed (oxic-anoxic) 6.8 24 508 2.9 -286 -81 18.7 110 10 132 <1 <1 <1 <1 51 56 <1 <1 110 3710 3790 <1 <1 36.9 <10 21 <1 <1 <1 1.4 <0.001 <0.001 297 596 <1 <1 rn 5-10 06/11/2015 Mixed (oxic-anoxic) 7.0 23 431 0.7 -202 3 148 130 178 2740 <1 <1 1.36 2.64 57 119 <1 <1 130 1540 1530 <1 <1 18.7 <10 32 <1 1.91 1.14 3.2 <0.001 0.00265 1950 15600 <1 1.95 SW-85DS 06/11/2015 Anoxic 6.9 23 139 0.4 -205 0 NM 100 106 51400 <1 <1 1.57 5.56 73 524 <1 2.56 100 2120 2170 <1 <1 25.1 <10 31 <1 40.4 <1 60.1 <0.001 0.055 3080 94300 <1 35.1 5-16 06/11/2015 Anoxic 2.9 24 2700 0.39 270 475 55.6 <10 70SO 3760 <1 <1 19.9 118 19 21 31.4 14.4 <10 724 553 <1 <1 314 <10 10 <1 <1 361 272 0.00104 0.00106 249000 257000 <1 <1 SW-BA1 05/20/2015 Mixed (oxic-anoxic) 6.5 20 370 7 -58 147 75.5 27 182 1600 <1 <1 1.04 1.54 70 84 <1 <1 27 <50 <50 <1 <1 13.8 <10 73 <1 <1 2.25 2.67 0.00159 0.00166 1210 5350 <1 2.47 SW-BA1 DUP 05/20/2015 Mixed (oxic-anoxic) 6.5 20 1 370 7 -58 147 75.5 26 167 1 1810 <1 <1 1.06 1.58 69 88 <1 <1 26 <50 <50 <1 <1 1 13.8 <10 72 <1 <1 2.08 2.79 0.00126 0.00167 1140 6110 <1 2.57 SW-BA2 OS/20/2015 Mixed (oxic-anoxic) 7.0 21 258 1.71 -220 -15 58.4 45 126 685 <1 <1 1.17 1.92 50 77 <1 <1 45 358 361 <1 <1 10.6 <10 12 <1 <1 3.53 4.6 0.00201 0.00193 2510 8910 1.55 1 8.84 SW-BB1 05/20/2015 Mixed (oxic-anoxic) 6.6 19 91 6.3 39 244 37.6 20 200 843 <1 <1 <1 <1 29 35 <1 <1 20 <50 <SO <1 <1 4.99 <10 9.6 <1 <1 <1 <1 0.00128 0.00117 561 1930 <1 <1 SW-CFDG 06/11/2015 Mixed (oxic-anoxic) 6.6 27 175 7.41 87 292 18.4 34 153 298 <1 <1 <1 <1 19 23 <1 <1 34 <50 <SO <1 <1 7.99 <10 16 <1 <1 <1 <1 0.00177 0.00187 378 790 <1 <1 'y SW-CFDG DUP 06/11/2015 Mixed (oxic-anoxic) 6.6 27 175 7.41 87 292 18.4 33 153 266 <1 <1 <1 <1 19 24 <1 <1 33 <50 <50 <1 <1 8.07 <10 16 <1 <1 <1 <1 0.00195 0.00179 377 765 <1 <1 SW-DEEPR 06/11/201S Mixed (oxic-anoxic) 7.1 27 150 6.66 89 294 16.6 27 198 346 <1 <1 <1 <1 19 21 <1 <1 27 <50 <SO <1 <1 7.37 <10 14 <1 <1 <1 <1 0.00224 0.002 580 997 <1 <1 SW -HAW 06/11/2015 Oxic 1 7.0 1 25 202 1 6.34 1 105 0 10 1 40 16 88 1.26 <1 <1 <1 22 25 <1 <1 40 63 50 <1 <1 9.33 1 <10 21 <1 <1 <1 <1 0.00124 1 0.00131 59 294 <1 <1 SW-SHD-56 05/19/2015 Mixed (oxic-anoxic) 6.7 23 1 219 1 3 1 25 230 20.4 1 34 1 112 1 511 <1 <1 I <1 <1 28 33 <1 <1 34 <50 <SO <1 <1 1 8.74 1 <10 1 13 <1 <1 <1 I <1 0.00177 0.00181 369 1 1210 <1 <1 SW-SHD-PLANT 05/19/2015 Mixed (oxic-anoxic) 6.8 21 1 301 1 8.4 -199 6 1 31.3 1 110 1 143 1 348 1 <1 I <1 1 1.4 1 1.74 1 85 1 95 1 <1 I <1 1 110 1 61 1 67 1 <1 I <1 1 15.1 1 <10 I 25 I <1 1.02 2.51 1 2.77 0.00201 0.0027 1150 2530 <1 <1 SW-SHD-REF 05/20/2015 Mixed (oxic-anoxic) 6.8 21 156 6.3 -18 187 187 37 247 5070 <1 <1 1.66 3.04 41 87 <1 <1 37 <50 <50 <1 <1 8.21 <10 16 <1 2.12 1.43 3.08 0.00182 0.00336 963 9180 <1 3.6 SW-UNT 05/19/2015 Mixed (oxic-anoxic) 7.3 24 549 6.9 39 237 10.2 83 46 211 <1 <1 <1 1.38 52 57 <1 <1 83 1040 1090 <1 <1 43.6 <10 17 <1 <1 <1 1.06 <O.001 0.00106 67 534 <1 <1 Prepared by: MMS/SRW Checked by: GMH Notes: Bold color highlighted concentrations indicate highest exceedance of the category listed below: - EPA Region 4 Surface Water Quality Criteria - Chronic, Nov 2001 C - EPA National Recommended Water Quality Criteria, Aquatic Life - Acute, June 2015 - EPA National Recommended Water Quality Criteria, Aquatic Life - Chronic, June 2015 - 15A NCAC 02B Criteria, Aquatic Life - Acute, January 2015 - EPA Region 4 Surface Water Quality Criteria - Chronic, Nov 2001 - MDL is greater than EPA National Recommended Water Quality Criteria, Aquatic Life - Acute, June 2015 - MDL is greater than EPA National Recommended Water Quality Criteria, Aquatic Life - Chronic, June 2015 - MDL is greater than 15A NCAC 02B Criteria, Aquatic Life - Acute, January 2015 15A NCAC 02B Criteria, Aquatic Life - Chronic, January 2015 - MDL is greater than 15A NCAC 02B Criteria, Aquatic Life - Chronic, January 2015 Temp = Temperature S.U. = Standard Unit NTU = nephelometric turbidity unit Deg C = Degree Celsius ug/I = microgram per liter DO = Dissolved Oxygen mg/I = milligrams per liter umhos/cm = micro mhos per centimeter Spec Cond = Specific Conductance my = millivolts ORP = Oxidative Reduction Potential < = concentration not detected at or above the reporting limit. NE = Not established NM = Not measured DUP = Duplicate * EPA Region 4 Surface Water Quality Criterion for arsenic is given in terms of As(III), and analytical results are in terms of dissolved arsenic ** EPA and NCAC 2B Water Quality Criteria are given in terms of dissolved Cr(VI), and analytical results are in terms of dissolved chromium Y Hardness dependent - concentrations compared to EPA criteria at a default hardness of 100 mg/L of CaCO, and NCAC 2B criteria at a default hardness of 25 mg/L as Ca CO, Qualitative Redox State derived using USGS Excel ® Workbook for Identifying Redox Processes in ground water. P:\Duke Energy Progress. 1026\103. Cape Fear Ash Basin GW Assessment\l.11 CSA Reporting\Tables\Table 12-12 SW Seep Analytical Results Eco.xlsx Page 1 of 2 TABLE 12-12 SURFACE WATER AND SEEPS ANALYTICAL RESULTS EPA AND 15A NCAC 2B RECOMMENDED WATER QUALITY CRITERIA FOR AQUATIC LIFE (ACUTE AND CHRONIC) CAPE FEAR STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, MONCURE, NC Analytical Parameter Magnesium Manganese Mercury Methane Molybdenum Nickel* Nitrate (as N) Potassium Selenium Sodium Strontium Sulfate Sulfide Thallium Total Dissolved Solids Total Organic Carbon Total Suspended Solids Vanadium Zinc" TOT DIS TOT TOT DIS TOT DIS TOT TOT DIS TOT TOT DIS TOT DIS TOT DIS TOT DIS TOT Reporting Units mg/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I mg-N/L mg/I ug/I ug/I mg/I mg/I mg/I mg/I mg/I ug/l ug/I mg/l mg/l mg/I ug/l ug/I mg/I mg/I EPA R4 FW Chronic NE NE NE 0.012 NE NE NE 87.71 NE NE NE NE 5 NE NE NE NE 0.002 4 NE NE NE NE NE NE 0.05891 NE EPA Aquatic Life Acute NE NE NE 1.4 NE NE NE 470 NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE 0.12 NE EPA Aquatic Life Chronic NE NE NE 0.77 NE NE NE 52 NE NE NE NE 5 NE NE NE NE NE NE NE NE NE NE NE NE 0.12 NE NC26_Aquatic Life_Acute NE NE NE NE NE NE NE 140 NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE 0.036 NE NC2B_Aquatic Life -Chronic NE NE NE 0.012 NE NE NE 16 1 NE NE NE NE 5 NE NE NE NE NE NE I NE NE NE NE NE NE 0.036 NE Sample ID Sample Collection Date Analytical Results S-04 06/11/2015 59 1770 27100 0.00682 180 1.04 <10 3.48 519 <0.01 2.39 <1 10.6 39.6 0.405 1.97 15o <0.1 <0.2 5.13 51 93 15000 <0.3 217 0.013 5.97 d S-09 05/20/2015 23.6 2260 2360 0.00267 42 <1 <1 4.06 4.29 0.041 1.19 <1 <1 30.6 0.301 0.315 99 <0.5 <0.2 <0.2 360 7.5 180 <0.3 0.739 <0.005 0.008 m 5-10 06/11/2015 12.4 3070 3910 0.0105 110 <1 <1 1.63 2.67 <0.01 2.87 <1 <1 47.1 0.152 0.167 19 <0.2 <0.2 <0.2 <25 24 940 1.95 9.31 0.015 0.012 SW-85DS 06/11/2015 17.9 1710 4340 0.00551 150 <1 <1 1.17 27.4 <0.01 1.96 <1 1.77 55.7 0.141 0.25 76 <0.2 <0.2 0.309 69 19 31000 4.24 107 <0.005 0.231 S-16 06/11/2015 78.7 25400 18800 <0.001 13 <1 2.99 352 206 <0.01 31.2 <1 <1 28 6.28 5.01 2700 <0.5 0.255 0.417 2600 0.976 190 <0.3 3.09 0.802 0.599 SW-BA1 05/20/2015 8.63 3080 3300 0.0026 95 <1 <1 1.18 1.57 0.029 2.84 <1 <1 31.6 0.141 0.147 4.1 <0.5 <0.2 <0.2 260 21 64 0.494 2.33 0.052 0.008 SW-BA1 DUP 05/20/2015 8.59 3100 3410 1 0.00124 110 <1 I <1 1.12 1.71 0.04 2.91 <1 <1 1 31.6 0.142 0.15 3.5 <0.5 <0.2 <0.2 250 21 130 0.384 2.31 0.164 0.011 SW-BA2 05/20/2015 5.66 2470 3300 0.00262 15 <1 <1 1.55 1.87 0.018 2.01 <1 <1 12.9 1 0.092 0.1 5.7 1 <0.1 <0.2 <0.2 1 150 22 1 25 1.29 4.31 0.04 0.018 SW-BB1 05/20/2015 2.48 43 50 0.00468 26 <1 <1 <1 1.06 0.21 1.24 <1 <1 7.82 0.036 0.038 3.6 <0.1 <0.2 <0.2 82 5 10 0.306 1.39 0.013 <0.005 SW-CFDG 06/11/2015 3.57 29 126 0.0015 14 1.52 1.4 <1 1.12 0.619 3.76 <1 <1 16.1 0.067 0.065 12 <0.1 <0.2 <0.2 110 7.3 11 1.44 1.59 0.008 <0.005 'y SW-CFDG DUP 06/11/2015 3.59 27 154 0.0015 14 1.4 1.42 <1 1.03 0.674 3.77 <1 <1 16.2 0.067 0.064 12 <0.1 <0.2 <0.2 100 7.3 10 1.42 1.63 0.059 0.191 u � SW-DEEPR 06/11/2015 3.52 47 64 0.0019 19 <1 <1 <1 <1 0.708 3.88 <1 <1 13.2 0.059 0.056 12 <0.1 0.383 <0.2 100 7.4 7 1.71 1.93 0.008 <0.005 SW -HAW 06/11/2015 1 3.85 1 <5 208 <0.001 1 18 1 2.45 2.54 1 1.18 1.41 0.298 3.63 <1 <1 22.2 0.083 0.08 16 <0.1 <0.2 <0.2 120 6.3 6 0.698 1.1 <0.005 <0.005 SW-SHD-56 05/19/2015 3.45 354 401 0.00288 21 1.17 <1 <1 <1 0.484 4.09 <1 <1 12.8 0.074 0.077 12 <0.1 <0.2 <0.2 100 7.8 14 1.42 2.39 0.009 <0.005 SW-SHD-PLANT 05/19/2015 4.91 1820 1910 0.00202 31 1.22 1.15 2.04 2.08 0.03 36 <1 <1 19.9 0.124 0.13 9 <0.1 <0.2 <0.2 230 37 12 1.32 2.43 0.016 0.014 SW-SHD-REF 05/20/2015 3.61 869 1150 0.00274 62 <1 <1 1.31 2.92 0.032 2.13 <1 <1 16.2 0.069 0.082 2 <1 <0.2 <0.2 140 19 150 1.03 7.82 0.021 0.016 SW-UNT O 19/2015 19.6 3280 3420 0.000786 <10 3.03 2.83 1.89 2.13 0.078 2.56 <1 <1 31.2 0.275 0.292 140 <0.1 <0.2 <0.2 350 4.7 8 0.705 1.67 0.006 <0.005 Prepared by: MMS/SRW Checked by: GMH Notes: Bold color highlighted concentrations indicate highest exceedance of the category listed below: - EPA Region 4 Surface Water Quality Criteria - Chronic, Nov 2001 C - EPA National Recommended Water Quality Criteria, Aquatic Life - Acute, June 2015 - EPA National Recommended Water Quality Criteria, Aquatic Life - Chronic, June 2015 - 15A NCAC 02B Criteria, Aquatic Life - Acute, January 2015 - 15A NCAC 02B Criteria, Aquatic Life - Chronic, January 2015 Temp = Temperature S.U. = Standard Unit Deg C = Degree Celsius ug/I = microgram per liter mg/I = milligrams per liter umhos/cm = micro mhos per centimeter my = millivolts ORP = Oxidative Reduction Potential NE = Not established NM= Not measured - EPA Region 4 Surface Water Quality Criteria - Chronic, Nov 2001 - MDL is greater than EPA National Recommended Water Quality Criteria, Aquatic Life - Acute, June 2015 - MDL is greater than EPA National Recommended Water Quality Criteria, Aquatic Life - Chronic, June 2015 - MDL is greater than 15A NCAC 02B Criteria, Aquatic Life - Acute, January 2015 - MDL is greater than 15A NCAC 02B Criteria, Aquatic Life - Chronic, January 2015 NTU = nephelometric turbidity unit DO = Dissolved Oxygen Spec Cord = Specific Conductance < = concentration not detected at or above the reporting limit. DUP = Duplicate * EPA Region 4 Surface Water Quality Criterion for arsenic is given in terms of As(III), and analytical results are in terms of dissolved arsenic ** EPA and NCAC 2B Water Quality Criteria are given in terms of dissolved Cr(VI), and analytical results are in terms of dissolved chromium Y Hardness dependent - concentrations compared to EPA criteria at a default hardness of 100 mg/L of CaCO, and NCAC 2B criteria at a default hardness of 25 mg/L as Ca CO, Qualitative Redox State derived using USGS Excel ® Workbook for Identifying Redox Processes in ground water. P:\Duke Energy Progress. 1026\103. Cape Fear Ash Basin GW Assessment\l.11 CSA Reporting\Tables\Table 12-12 SW Seep Analytical Results Eco.xlsx Page 2 of 2 TABLE 12-13 SOILS (0-2') ANALYTICAL RESULTS WITH SCREENING CRITERIA - EPA REGION 4 RECOMMENDED SCREENING VALUES FOR SOIL - ECOLOGICAL CAPE FEAR STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, MONCURE, NC Analytical Parameter Percent Moisture pH at 25 Degrees C Aluminum Antimony Arsenic Barium Beryllium Boron Cadmium Calcium Chloride Chromium Cobalt Copper Iron Lead Magnesium Manganese Mercury Molybdenum Nickel Nitrate (as N) Potassium Selenium Sodium Strontium Sulfate Thallium Total Organic Carbon Vanadium Zinc Reporting Units / Std. 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/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 EPA Region 4-RSL Soil NE NE 50 3.5 SO 165 1.1 0.5 1.6 NE NE 0.4 20 40 200 50 NE 100 0.1 2 30 NE NE 0.81 NE NE NE 1 NE 2 50 Sample ID Sample Collection Date Analytical Results u ABMW-04 AB (1-2) 04/11/2015 42.3 5.4 5200 <4.2 21.8 482 1.1 <10.6 0.59 j 1390 <216 10.5 6.9 j 19.3 20500 <4.2 447 56.2 0.093 <2.1 13 <21.6 853 6.9 j <211 97.4 <216 <4.2 104000 20.4 9.7 u e A3MW-04 AB (1-2) CUP 04/11/2015 19 6.6 6260 <3 30.4 389 1.4 <7.6 <0.36 1710 <154 11.5 6.5 25.7 16800 5.5j 523 55.7 0.13 1.8j 16.1 <15.4 1030 7.1 <151 135 <154 <3 82900 25.8 14.5 B-141963 (0-2) 03/30/2015 11.8 3.2 1920 <1.4 118 47.8 <0.14 40 <0.17 3400 <144 9.3 2.1j 19 50400 42.1 1170 68.8 0.13 1.7j 3.9 <14.4 750 4.7 <141 20.2 5650 <1.4 162000 24.9 10.3 MW-OSBR SB(0-2) 04/23/2015 19.8 5.6 11500 <3 <3 62.8 0.21j <7.6 <0.36 1230 <156 24.7 3.7j 8.2 26200 7.4 905 78 0.037 <1.5 1.3j <15.6 <152 <3 <152 17.5 <156 <3 1480 89.6 11.6 MW-06BR SB(0-2) 05/30/2015 14.6 5.5 9800 <3 <3 100 0.58 <7.6 <0.37 442 <144 1 18.7 17.5 1 12.7 18900 10.6 1840 1080 0.05 <1.5 6.9 <14.4 <152 <3 <152 1 8.6 145j <3 4790 50.2 27.6 MW-09 SB (0-2) 04/25/2015 21.2 4.1 4250 <3.3 <3.3 18.1 <0.17 <8.3 <0.4 <83.2 <155 4.3 <3.3 4.7 13000 6.3 j 305 19.4 0.011 <1.7 <0.83 <15.5 <166 <3.3 <166 <1.7 <155 <3.3 6550 10.2 9.4 MW-10BR SB (0-2) 04/08/2015 10 5 3300 <2.9 <2.9 33.5 0.21 6.4 <0.35 291 <136 20.6 9.3 7.1 10600 6.9 650 363 0.029 <0.29 2.7 <13.6 114 <2.9 <29 3.9 <136 <2.9 3780 31.6 27.2 MW-12BR SB (0-2) 02/24/2015 17.3 5.7 6230 <0.58 0.82 j 77.8 0.47 7.8 0.092 NA <150 9.4 13.2 8.4 13500 8.7 1520 1510 0.032 <0.29 4.2 <15 68 1.1 j 79.2 14 <150 <0.58 2140 30.9 19.3 c MW-15 SB (0-2) 04/O1/2015 18.3 5.2 9980 <1.5 <2.9 64.9 0.6 18.2 <0.18 1120 <153 15.2 6.4 11.4 24100 8.5 2170 367 0.019 <1.5 8.8 <15.3 <146 <2.9 177 j 15.9 539 <2.9 1530 55.1 32.8 2y MW-16 SB (0-2) 04/28/2015 29.3 5 4130 <3.4 <3.4 69.2 0.26 j <8.4 <0.4 642 1 <180 3.8 4.3 j 4 7250 8.1 1380 392 0.018 <1.7 3.9 <18 227 j <3.4 <168 9.5 <180 <3.4 13400 1 12.1 18.9 m C MW-17 SB (0-2) 06/29/2015 16 5.4 7370 <3.1 <3.1 140 0.71 <7.8 <0.37 850 <138 13.3 13.3 12.8 14600 13.1 1400 1230 0.063 <1.6 5.5 <13.8 249 j <3.1 <155 11.8 <138 <3.1 13900 46.1 27 MW-18 SB (0-2) 02/11/2015 28.3 5.2 11800 <1.7 <1.7 103 0.73 <34.3 <0.21 664 <173 16.4 34.7 15.9 17500 12.2 1670 3520 0.05 <6.9 6.5 j <17.3 73.5 <1.7 241 10.2 344 j <1.7 4260 53.9 29.1 MW-19 SB (0-2) 02/11/2015 19.7 5.1 9130 <1.6 1.7 j 58 0.46 <31.4 <0.19 215 275 j 26.5 23.4 294 2070 0.052 <0.31 3.9 <15.5 88.6 <1.6 <31.4 4.4 447 <1.6 1610 58.88.2 MW-20 SB (0-2) 05/13/2015 19.9 5.1 10100 <3.1 <3.1 75.7 0.39 <7.8 <0.37 1350 <154 16.9 18800 9 2470 747 0.0061 j <1.6 5.9 <15.4 <156 <3.1 312 16.8 <154 <3.1 2950 47.3 32.2 MW-21 SB(0-2) 04/21/2015 13.9 3.8 1480 <3 60.3 66A <0.15 <7.5 <0.36 93.3j <141 3.7 177..�19400 8420 <3 178 25.3 0.013 <1.5 <0.75 <14.1 <151 3.2j <151 4 <141 <3 932 14.9 3.1j MW-21SB (0-2) 06/18/2015 36.6 5.2 1610 <4.1 40.1 87.5 <0.2 <10.2 <0.49 2490 <191 3.1 5980 13.1 393 781 0.75 <2 1.8 j <19.1 338 j 5.7 j <205 25 285 j <4.1 42700 8.8 20.6 Prepared by: MMS/SRW Checked by: GMH Notes: Bold color highlighted concentrations indicate highest exceedance of the category listed below: EPA Region 4 Criteria - Soil - MDL is greater than EPA Region 4 Criteria - Soil Dup = Duplicate %=percent NE = Not established mg/kg = miligram per kilogram S.U. = Standard Units j = indicates concentration reported below Practical Quantitation Limit (PQL), but above Method Detection Limit (MDL) and therefore concentration is estimated. < = concentration not detected at or above the reporting limit. P:\Duke Energy Progress. 1026\103. Cape Fear Ash Basin GW Assessment\5.11 CSA Reporting\Tables\Table 12-13 Soils (0-2) Analytical Results Eco.xlsx Page 1 of 1 TABLE 12-14 SEDIMENT ANALYTICAL RESULTS WITH SCREENING CRITERIA EPA REGION 4 SOIL SCREENING LEVELS EPA REGION 4 EFFECTS VALUES - SEDIMENT CAPE FEAR STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, MONCURE, NC Analytical Parameter Percent Moisture pH at 25 Degrees C Aluminum Antimony Arsenic Barium Beryllium Boron Cadmium Calcium Chloride Chromium Cobalt Copper Iron Lead Magnesium Manganese Mercury Molybdenum Nickel Nitrate (as N) Potassium Selenium Sodium Strontium Sulfate Thallium Total Organic Carbon Vanadium Zinc Reporting Units % Std. 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/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 EPA Region 4-RSL Soil NE NE 50 3.5 10 165 1.1 0.5 1.6 NE NE 0.4 20 40 200 s0 NE 100 0.1 2 30 NE NE 0.81 NE NE NE 1 NE 2 50 EPA Region 4-Effects Value NE NE NE 2 7.24 NE NE NE 0.676 NE NE 52.3 NE 18.7 NE 30.2 NE NE 0.13 NE 15.9 NE NE NE NE NE NE NE NE NE 124 Sample ID Sample Collection Date Analytical Results S-04 06/11/2015 88.9 6.8 10600 <22.9 45.8j 235 6.8 187 <2.8 9650 <218 8.9j 87.8 39.4 193000 <22.9 2820 1450 0.051j <11.5 66.7 <21.8 <1150 <22.9 <1150 98.7 267j <22.9 166000 30.9j 524 u S-09 05/20/2015 88.4 6.4 2390 <22.2 <22.2 23.9 2.3 86.2j <2.7 6500 <1100 <5.6 is8 10.6j 11200 <22.2 1490 277 0.068 <11.1 76.2 <110 <1110 <16.7 <1110 47.5 1660j <22.2 200000 <22.2 51.8 0 En S-10 06/11/2015 74.8 7 19000 <9.9 <9.9 150 1.2 <24.8 <1.2 3740 <100 25.6 41 27.5 29600 15.1j 2930 606 0.056 <5 18 <10 <497 <9.9 <497 41.2 105j <9.9 47600 62 106 SW-85DS 06/11/2015 63.8 6.7 10100 <7.1 <7.1 80.2 0.65 j <17.6 <0.85 1950 <67.6 15.3 23.2 13.9 30200 10.2 j 2050 267 0.035 <3.5 11.1 <6.8 <353 <7.1 <353 19.8 75.1 j <7.1 34800 42.7 56.2 S-16 06/11/2015 58.1 3.6 3670 <5.7 237 18.5 0.82 38 <0.69 984 <303 2j 14.3 <1.4 420000 <5.7 386 143 0.02 <2.9 29.5 <30.3 585 <5.7 <1150 21.7 4680 <5.7 50400 15.3 73.9 SW-BA1 05/20/2015 39 6.1 5520 <4.2 <4.2 46.2 0.26j <10.5 <0.5 669 <205 5.2 <4.2 7.4 1.2600 8.2j 728 223 0.02 <2.1 2.3 <20.5 <210 <3.2 <210 8.4 <205 <4.2 11000 12.6 17.3 SW-BA2 05/20/2015 68.3 5 10200 <8.2 <8.2 127 0.62j 25.6j <0.98 1010 <380 23.3 12.8j 61.1 33900 11.2j 1300 502 0.057 <4.1 14.5 <38 <409 <6.1 <409 12.3 <380 <8.2 198000 34.6 46.2 SW-BB1 05/20/2015 23.4 5.9 1660 <3.2 <3.2 13.9 <0.16 <8.1 <0.39 226 <160 1.4 j <3.2 2 3640 <3.2 215 32.6 0.0067 j <1.6 0.87 j <16 <161 <2.4 <161 1.9 j <160 <3.2 1060 3.4 j 7.8 SW-CFDG 06/11/2015 32.8 6.2 8270 <3.8 <3.8 69.4 0.3j <9.4 <0.45 875 <182 47 11.6 17.1 15500 13.3 1300 537 0.055 <1.9 6.2 <18.6 2711 <3.8 <188 9.9 <182 <3.8 15500 38.5 42.6 C 'y SW-CFDG DUP 06/11/2015 34 6 6120 <3.8 <3.8 46 0.21 j <9.5 <0.46 603 <187 24.3 8.5 10.1 12200 8.5 918 300 0.03 <1.9 4.3 <18.7 1931 <3.8 <190 7 <187 <3.8 20600 31.6 29.1 d cc SW -HAW 06/11/2015 31.2 6 3620 <3.5 <3.5 37.1 <0.18 <8.8 <0.42 481 <182 16 5.9 j 5.6 8810 5.1 j 660 503 0.018 <1.8 3.2 <18.2 <175 <3.5 <175 5.6 <182 <3.5 8620 21.3 29.2 SW-SHD-56 05/19/2015 41.9 6.4 13600 <4.1 <4.1 123 0.66 <10.2 <0.49 1030 <211 44.6 22.6 24.3 30600 17.7 2200 1550 0.12 <2 7.9 <21.1 393j <3.1 <204 13.5 <211 <4.1 29800 66.9 53.3 SW-SHD-PLANT 05/19/2015 41.2 6.1 6780 <4.3 <4.3 74.6 0.56 <10.7 1 1010 <207 18.2 7.3j 11.6 11500 6.7j 1440 380 0.023 <2.1 5.6 <20.7 4221 <3.2 <215 12.7 <207 <4.3 6930 20.2 34.7 SW-SHD-REF 05/20/2015 51.7 6.1 7710 <5.1 <5.1 101 0.49j <12.7 <0.61 1320 <252 8.8 9j 12.5 15600 9.2j 2390 358 0.024 <2.5 9.8 <25.2 4281 <3.8 <255 14.3 <252 <5.1 15600 14.5 39.7 SW-UNT 05/19/2015 36.9 6.8 5900 <4.1 <4.1 120 0.97 24.9 <0.49 40300 <195 15 21.4 14.2 29500 8.5 1210 1200 0.014 2.4j 5.4 <19.5 <205 <3.1 362j 104 <195 <4.1 4240 41.3 23.7 Prepared by: MMS/SRW Checked by: GMH Notes: Bold highlighted concentrations indicate highest exceedance of the category listed below: - EPA Region 4 Soil Screening Levels - EPA Region 4 Effects Value - MDL is greater than EPA Region 4 Soil Screening Levels - MDL is greater than EPA Region 4 Effects Value Dup = Duplicate mg/kg = miligram per kilogram NE = Not established j = indicates concentration reported below Practical Quantitation Limit (PQL), but above Method Detection Limit (MDL) and therefore concentration is estimated. < = concentration not detected at or above the reporting limit. S.U. = Standard Units %= percent P:\Duke Energy Progress. 1026\103. Cape Fear Ash Basin GW Assessment\1.11 CSA Reporting\Tables\Table 12-14 Sediment Analytical Results Eco.xlsx Page 1 of 1 TABLE 12-15 MATRIX FOR DETERMINATION OF CONSTITUENTS OF POTENTIAL CONCERN - ECOLOGICAL CAPE FEAR STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, MONCURE, NC Analytical Parameter pH Aluminum Antimony Arsenic Barium Beryllium Boron Cadmium Calcium Chloride Chromium Cobalt Copper Iron Lead Magnesium Manganese Mercury Methane Molybdenum Nickel Nitrate (as N) Potassium Selenium Sodium Strontium Sulfate Sulfide Thallium Total Organic Carbon Vanadium Zinc Medium/Basis for COPC Designation Soil Concentration exceeds screening value ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ MDL Exceeds screening value ✓ ✓ ✓ ✓ ✓ No screening value ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ Sediment Concentration exceeds screening value ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ MDL Exceeds screening value ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ No screening value ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ Surface Water Concentration exceeds screening value ✓ ✓ ✓ ✓ ✓ MDL Exceeds screening value ✓ ✓ ✓ ✓ No screening value ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ Seep Concentration exceeds screening value ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ MDL Exceeds screening value ✓ ✓ ✓ ✓ No screening value ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ Prepared by: MMS KDF Checked by: MMS Notes: Constituent determined to be a COPC due to exceedance of one or more screening criteria at one or more sample locations ✓ Constituent determined to be a tentative COPC due to a lack of screening criteria Constituent not determined to be a COPC due to no exceedances of any screening criteria at any sample locations Based on data from Tables 12-13 through 12-15 P:\Duke Energy Progress. 1026\103. Cape Fear Ash Basin GW Assessment\1.11 CSA Reporting\Tables\Table 12-15 Matrix Determin COPCs- Eco.xlsx Page 1 of 1