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HomeMy WebLinkAboutNC0003433_Table 12-4 Surficial GW Results_20150902TABLE 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