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NC0000396_SARP_Rev 0_ Appendix B_b_20161219
TABLE 10-1 EXPLORATION AND SAMPLING PLAN - WATER ASHEVILLE STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, ARDEN, NC GW Assessment Radium/Uranium Iron Manganese Arsenic Selenium Chromium ABMW-02 3/17/2015 5/27/2015 X X X X X X X ABMW-02S 3/17/2015 5/27/2015 X X X X X X X ABMW-04 3/31/2015 5/26/2015 X X X X X X ABMW-04BR ABMW-04D 3/31/2015 5/26/2015 X X X X X X ABMW-05BR 4/13/2015 5/27/2015 X X X X X X ABMW-05D 4/12/2015 5/26/2015 X X X X X X ABMW-05S 4/13/2015 5/26/2015 X X X X X X ABMW-06BR ABMW-07 ABMW-07BR ABMW-07S 4/12/2015 5/27/2015 X X X X X X ABMW-08 5/14/2015 5/21/2015 X ADP-7 5/13/2015 X AMW-1B 5/19/2015 X AMW-2 5/19/2015 X AMW-3A 5/12/2015 X AMW-3B 5/12/2015 X CB-01 7/6/2015 X CB-01BR CB-01D 4/28/2015 5/21/2015 X CB-02 7/7/2015 X X CB-03 5/19/2015 X CB-03R 7/8/2015 X X X CB-04 7/8/2015 X X CB-04B 7/7/2015 X X CB-05 7/9/2015 X X X CB-06 7/8/2015 X X X CB-07 7/8/2015 X CB-08 7/6/2015 X X CB-08BR 5/11/2015 5/22/2015 X CB-08D CB-09 7/6/2015 X X CB-09BR 4/27/2015 5/28/2015 X X X X X CB-09SL 4/27/2015 5/28/2015 X X X DP-01 5/13/2015 X GW-01 7/6/2015 X X GW-01BR 5/14/2015 5/27/2015 X X X X X X GW-01D 5/7/2015 5/28/2015 X X X X X X GW-02 5/14/2015 X GW-03 5/14/2015 X GW-04 5/18/2015 X MW-01BR 5/11/2015 5/21/2015 X MW-01D 5/11/2015 5/21/2015 X MW-02BR 4/13/2015 5/21/2015 X MW-03BR MW-03D 5/7/2015 5/21/2015 X MW-04D 4/28/2015 5/21/2015 X MW-05BR 5/4/2015 5/28/2015 X X X MW-05D 5/7/2015 5/27/2015 X X X X X X MW-06BR MW-06D 4/15/2015 5/21/2015 X MW-06S 4/15/2015 5/21/2015 X MW-07BR MW-08BR MW-08S 3/6/2015 5/27/2015 X X X X X X MW-09BR 5/4/2015 5/21/2015 X MW-09D 5/4/2015 5/21/2015 X MW-09S 4/27/2015 5/21/2015 X MW-10 5/12/2015 X MW-11 5/20/2015 X MW-11D 2/12/2015 5/20/2015 X MW-12BR MW-12D 3/31/2015 5/21/2015 X MW-13BR 3/3/2015 5/20/2015 X MW-13D 2/12/2015 5/20/2015 X MW-14BR 2/13/2015 5/20/2015 X MW-15A 3/4/2015 5/20/2015 X MW-15BR MW-15D 3/4/2015 5/20/2015 X MW-16 3/11/2015 X MW-16BR 3/11/2015 5/28/2015 X X X MW-16A 5/28/2015 X X X MW-17A 3/3/2015 5/21/2015 X MW-18BR 5/4/2015 5/28/2015 X X X X MW-18D 5/4/2015 5/28/2015 X X X MW-19BR MW-20A 6/24/2015 X MW-21D 6/30/2015 X X X X X X MW-22BR 6/30/2015 X X X X X X MW-22D 6/30/2015 X X X X X X MW-23BR MW-23DL 6/30/2015 X X X X X X MW-23DU 6/24/2015 X X X X X X MW-24BR MW-24S 5/11/2015 6/1/2015 X X X X Prepared by: BER Check by: KLS Parameters Sample ID Initial Date Sampled Second Date Sampled Speciation P:\Duke Energy Progress.1026\102. Asheville Ash Basin GW Assessment Plan\1.11 CSA Reporting\tables\Table 10-1 Exploration and Sampling Plan - WATER Page 1 of 1 TABLE 10-2 ASH PORE WATER, GROUNDWATER, SURFACE WATER, AND SEEP ANALYTICAL METHODS ASHEVILLE STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, ARDEN, NC Parameter Reporting Limits Units Method pH NA SU Field Water Quality Meter Specific Conductance NA µS/cm Field Water Quality Meter Temperature NA ºC Field Water Quality Meter Dissolved Oxygen NA mg/L Field Water Quality Meter Oxidation Reduction Potential NA mV Field Water Quality Meter Turbidity NA NTU Field Water Quality Meter Ferrous Iron NA mg/L Field Test Kit Aluminum 0.005 mg/L EPA 200.7 or 6010C Antimony 0.001 mg/L EPA 200.8 or 6020A Arsenic 0.001 mg/L EPA 200.8 or 6020A Barium 0.005 mg/L EPA 200.7 or 6010C Beryllium 0.001 mg/L EPA 200.8 or 6020A Boron 0.05 mg/L EPA 200.7 or 6010C Cadmium 0.001 mg/L EPA 200.8 or 6020A Chromium 0.001 mg/L EPA 200.7 or 6010C Cobalt 0.001 mg/L EPA 200.8 or 6020A Copper 0.005 mg/L EPA 200.7 or 6010C Iron 0.01 mg/L EPA 200.7 or 6010C Lead 0.001 mg/L EPA 200.8 or 6020A Manganese 0.005 mg/L EPA 200.7 or 6010C Mercury (low level)0.000012 mg/L EPA 245.7 or 1631 Molybdenum 0.005 mg/L EPA 200.7 or 6010C Nickel 0.005 mg/L EPA 200.7 or 6010C Selenium 0.001 mg/L EPA 200.8 or 6020A Strontium 0.005 mg/L EPA 200.7 or 6010C Thallium (low level)0.0002 mg/L EPA 200.8 or 6020A Vanadium (low level)0.0003 mg/L EPA 200.8 or 6020A Zinc 0.005 mg/L EPA 200.7 or 6010C Radium 226 1 pCi/L EPA 903.1 Modified Radium 228 3 pCi/L EPA 904.0/SW846 9320 Modified Uranium (233, 234, 236, 238)Varies by Isotope ug/mL SW846 3010A/6020A Alkalinity (as CaCO3)20 mg/L SM 2320B Bicarbonate 20 mg/L SM 2320 Calcium 0.01 mg/L EPA 200.7 Carbonate 20 mg/L SM 2320 Chloride 0.1 mg/L EPA 300.0 or 9056A Magnesium 0.005 mg/L EPA 200.7 Methane 0.1 mg/L RSK 175 Nitrate as Nitrogen 0.023 mg-N/L EPA 300.0 or 9056A Potassium 0.1 mg/L EPA 200.7 Sodium 0.05 mg/L EPA 200.7 Sulfate 0.1 mg/L EPA 300.0 or 9056A Sulfide 0.05 mg/L SM4500S-D Total Dissolved Solids 25 mg/L SM 2540C Total Organic Carbon 0.1 mg/L SM 5310 Total Suspended Solids 2 mg/L SM 2450D Arsenic Speciation Vendor Specific mg/L IC-ICP-CRC-MS Chromium Speciation Vendor Specific mg/L IC-ICP-CRC-MS Iron Speciation Vendor Specific mg/L IC-ICP-CRC-MS Manganese Speciation Vendor Specific mg/L IC-ICP-CRC-MS Selenium Vendor Specific mg/L IC-ICP-CRC-MS Prepared by: RBI Checked by: BDW Notes: INORGANICS FIELD PARAMETERS NA indicates not applicable. ADDITIONAL GROUNDWATER CONSTITUENTS 1. Select constituents will be analyzed for total and dissolved concentrations. ANIONS/CATIONS RADIONUCLIDES P:\Duke Energy Progress.1026\102. Asheville Ash Basin GW Assessment Plan\1.11 CSA Reporting\tables\Table 10-2ASH PORE WATER, GROUNDWATER, SURFACE WATER, AND SEEP COCPS AND ANALYTICAL METHODS.xlsx Page 1 of 1 TABLE 10-3 GROUNDWATER ANALYTICAL RESULTS ASHEVILLE STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, ARDEN, NC Aluminum Aluminum Antimony Antimony Arsenic Arsenic Barium Barium Beryllium Beryllium Boron Boron Cadmium Cadmium Calcium Chromium Chromium Cobalt Cobalt Copper Copper Iron Iron DIS TOT DIS TOT DIS TOT DIS TOT DIS TOT DIS TOT DIS TOT TOT DIS TOT DIS TOT DIS TOT DIS TOT Unknown S.U. ft Deg C umhos /cm mg/l mV mV NTU mg/l mg/l ug/l ug/l ug/l ug/l ug/l ug/l ug/l ug/l ug/l ug/l mg/l ug/l ug/l ug/l ug/l mg/l mg/l mg/l ug/l ug/l ug/l ug/l mg/l mg/l ug/l ug/l 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 Collection Date CB-05 04/06/2015 6.7 3.66 12 216 0.51 -29 175.7 9.16 NM 29.9 NA 135 NA <1 NA <1 NA 15 NA <1 29.9 NA 142 NA <1 6.79 <5 22 NA <5 NA <1 NA <0.005 NA 19600 CB-05 07/09/2015 Mixed(oxic-anoxic)6.0 5.05 19 230 0.95 -88 117 3.99 NM 34.6 90 191 <1 <1 <1 <1 14 17 <1 <1 34.6 198 209 <1 <1 6.97 <5 27 <1 <5 <1 <1 <0.001 <0.005 20000 25400 CB-06 04/06/2015 6.0 3.48 11 525 1.3 36 240.5 8.53 NM 7.7 NA 31 NA <1 NA <1 NA 31 NA <1 7.7 NA 609 NA <1 42.8 <5 37 NA <5 NA 1.42 NA <0.005 NA 14600 CB-06 07/08/2015 Mixed(oxic-anoxic)5.9 4.94 24 745 0.6 -93 112 4.19 NM 25.9 34 58 <1 <1 <1 <1 50 52 <1 <1 25.9 794 807 <1 <1 57.7 <5 150 <1 <5 2.24 2.21 <0.001 <0.005 20500 22000 CB-07 04/06/2015 5.9 7.73 11 456 6.2 65 270 0.78 NM 14.6 NA 8 NA <1 NA <1 NA 36 NA <1 14.6 NA 233 NA <1 37.2 <5 95 NA <5 NA <1 NA <0.005 NA <10 CB-07 07/08/2015 Oxic 5.8 8.65 21 276 4.45 66 271 1.13 NM 22.9 5 8 <1 <1 <1 <1 29 29 <1 <1 22.9 259 263 <1 <1 23.3 <5 36 <1 <5 <1 <1 0.00113 <0.005 <10 <10 MW-10 05/12/2015 Mixed(oxic-anoxic)5.0 5.58 16 64 0.96 47 251.7 4.09 <0.5 <10 40 121 <1 <1 <1 <1 45 47 <1 <1 <10 <50 <50 <1 <1 2.39 <10 8.9 <1 <1 4.69 4.29 0.00108 <0.001 242 369 MW-11 05/20/2015 Mixed(oxic-anoxic)5.0 8.61 16 346 1.98 93 298 1.01 <0.5 11 151 215 <1 <1 <1 <1 96 102 <1 <1 11 <50 <50 <1 <1 19.3 <10 73 3.03 2.96 1.76 2.14 <0.001 <0.001 72 <10 MW-15A 03/04/2015 Mixed(oxic-anoxic)5.4 6.23 10 188 2.86 47 252 3.28 0.5 <10 81 165 <1 <1 <1 <1 113 117 <1 <1 <10 62 61 <1 <1 9.55 <10 43 <1 <1 1.15 1.25 <0.001 <0.001 627 879 MW-15A 05/20/2015 Mixed(anoxic)4.9 7.94 18 167 0.41 151 356 4.73 <0.5 <10 128 179 <1 <1 <1 <1 80 84 <1 <1 <10 51 54 <1 <1 7.7 <10 34 <1 <1 <1 <1 <0.001 <0.001 122 217 MW-16A 03/11/2015 Mixed(oxic-anoxic)5.3 9.63 10 400 0.88 35 240 0.63 0.5 <10 186 200 <1 <1 <1 <1 117 123 <1 <1 <10 301 303 <1 <1 33.6 <10 93 <1 <1 1.1 1.01 <0.001 <0.001 500 522 MW-16A DUP 03/11/2015 Mixed(oxic-anoxic)5.3 9.63 10 400 0.88 35 240 0.63 0.5 <10 180 203 <1 <1 <1 <1 116 124 <1 <1 <10 295 302 <1 <1 33.4 <10 92 <1 <1 1.09 1.1 <0.001 <0.001 484 538 MW-16A 05/28/2015 Mixed(oxic-anoxic)5.0 9.84 15 432 0.51 12 216.7 3.17 <0.5 <10 213 226 <1 <1 <1 <1 117 118 <1 <1 <10 358 354 <1 <1 35.4 <10 97 <1 <1 1.32 1.35 0.00197 <0.001 185 248 MW-17A 03/03/2015 Mixed(oxic-anoxic)6.3 5.28 8 1331 1.24 22 227 9.4 3 36 58 321 <1 <1 1.08 <1 139 154 <1 <1 36 1240 1060 <1 <1 132 <10 330 <1 <1 28.2 26.3 <0.001 <0.001 23000 8970 MW-17A 05/21/2015 Anoxic 6.2 6.89 24 1573 0.49 -163 42 6.72 6 48 83 1970 <1 <1 4.04 3.35 126 125 <1 <1 48 1650 1540 <1 <1 166 <10 390 2.21 3.92 29.8 25.8 <0.001 0.00106 40400 40600 MW-20A 06/24/2015 Mixed(oxic-anoxic)6.0 4.98 21 707 0.68 -93 111.8 2.43 NM 99 126 250 <1 <1 <1 <1 66 64 <1 <1 99 646 641 2.15 2.01 76.7 <10 23 <1 <1 16.3 16.4 <0.001 <0.001 16000 16300 ABMW-02S 03/17/2015 Mixed(anoxic)4.2 25.53 17 813 0.41 99 304.1 2.39 1 <10 14000 14200 <1 <1 12.1 11.2 28 29 10.8 11 <10 717 760 2.87 2.96 81.4 <10 12 1.31 1.47 562 569 0.00363 0.00352 1050 1120 ABMW-02S 05/27/2015 Mixed(anoxic)4.1 26.05 19 832 0.26 122 327 9.33 <0.5 <10 15600 15100 <1 <1 15.4 16 16 19 11.7 12.5 <10 770 751 3.17 3.3 81.5 <10 14 <1 <1 567 578 0.00416 0.00456 198 557 ABMW-02S DUP 05/27/2015 Mixed(anoxic)4.1 26.05 19 832 0.26 122 327 9.33 <0.5 <10 15700 15300 <1 <1 15.5 16 16 17 11.6 12.6 <10 767 761 3.21 3.24 83.2 <10 14 <1 <1 563 576 0.00388 0.00454 206 453 ABMW-05S 04/13/2015 Mixed(oxic-anoxic)5.9 16.44 14 211 3.53 51 256 2.62 <0.5 69 H 6 92 <1 <1 <1 <1 16 16 <1 <1 69 H <50 <50 <1 <1 13.7 <10 7.8 <1 <1 13.9 14.3 <0.001 <0.001 28 207 ABMW-05S 05/26/2015 Mixed(anoxic)5.8 18.3 20 222 0.42 -36 169 25.7 3 71 12 21 <1 <1 <1 <1 20 21 <1 <1 71 <50 <50 <1 <1 12.6 <10 5.2 <1 <1 16.1 16.7 <0.001 <0.001 4080 4800 ABMW-07S 04/12/2015 Mixed(oxic-anoxic) 6.5 24.47 18 355 3.73 117 322 6.47 <0.5 70 <5 380 <1 <1 <1 <1 49 48 <1 <1 70 598 596 <1 <1 24.9 <10 6.3 1.26 1.24 6.06 6.12 <0.001 <0.001 <10 216 ABMW-07S 05/27/2015 Mixed(oxic-anoxic)6.3 25.86 21 423 0.5 -35 170 1.96 <0.5 60 <5 8 <1 <1 <1 <1 45 47 <1 <1 60 783 789 <1 <1 30.6 <10 7.3 <1 <1 3.17 3.5 <0.001 <0.001 93 170 AMW-03A 05/12/2015 Oxic 12.1 8.17 15 2350 5.41 -189 15.6 1.5 <0.5 440 6540 7200 <1 <1 <1 <1 52 49 <1 <1 30 <50 <50 <1 <1 188 350 1.1 3.39 <1 <1 <1 0.00118 0.00117 <10 <10 APD-07 05/13/2015 Oxic 5.5 25.6 21 169 1.2 66 270.7 4.76 <0.5 25 <5 29 <1 <1 <1 <1 11 13 <1 <1 25 134 119 <1 <1 16.4 <10 10 <1 <1 <1 <1 <0.001 <0.001 <10 38 CB-01 04/07/2015 4.9 45.5 15 17 8.68 136 341.2 6.74 NM <5 NA 269 NA <1 NA <1 NA 19 NA <1 <5 NA <50 NA <1 0.044 <5 1.6 NA <5 NA 1.94 NA <0.005 NA 279 CB-01 07/06/2015 Oxic 4.7 49.12 16 20 8.34 161 366 3.82 NM <5 50 150 <1 <1 <1 <1 20 21 <1 <1 <5 <50 <50 <1 <1 0.143 <5 1.7 <1 <5 2.02 1.95 7.90E-03 0.012 <10 86 CB-02 04/07/2015 5.4 23.55 15 159 0.61 119 324.1 8.73 NM 10.3 NA 295 NA <1 NA <1 NA 33 NA <1 10.3 NA 174 NA <1 10.1 <5 2.9 NA <5 NA 4.26 NA <0.005 NA 319 CB-02 07/07/2015 Mixed(oxic-anoxic)5.3 24 18 148 0.83 115 320 4.43 NM 16.4 9 141 <1 <1 <1 <1 30 32 <1 <1 16.4 153 155 <1 <1 9.7 <5 2.7 <1 <5 4 4.17 <0.001 <0.005 <10 146 CB-04 04/08/2015 5.1 19 13 340 4.52 112 316.6 6.73 NM <5 NA 567 NA <1 NA <1 NA 64 NA <1 <5 NA 590 NA <1 29.8 <5 7.5 NA <5 NA 1.63 NA <0.005 NA 291 CB-04 07/08/2015 Mixed(oxic-anoxic)5.2 20.38 18 335 3.12 206 357 18 NM <5 25 4690 <1 <1 <1 <1 53 110 <1 <1 <5 604 598 <1 <1 31 <5 7.6 <1 <5 2.17 5.41 <0.001 <0.005 11 3340 CB-09 04/07/2015 5.0 37.29 16 38 2.24 114 319.4 8.79 NM <5 NA 347 NA <1 NA <1 NA 29 NA <1 <5 NA <50 NA <1 0.504 <5 6.7 NA <5 NA 1.36 NA <0.005 NA 653 CB-09 07/06/2015 Oxic 4.9 37.02 16 41 2.25 159 364 4.5 NM <5 21 103 <1 <1 <1 <1 26 29 <1 <1 <5 <50 <50 <1 <1 0.545 <5 6.7 <1 <5 <1 <1 0.00178 <0.005 <10 158 CB-09SL 04/27/2015 Mixed(oxic-anoxic)6.0 36.05 13 76 1.08 130 335.4 30.4 <0.5 25 12 1280 <1 <1 <1 <1 29 46 <1 <1 25 <50 <50 <1 <1 4.15 <10 6.1 <1 2.86 <1 1.21 0.00179 <0.001 65 475 CB-09SL 05/28/2015 Mixed(oxic-anoxic)5.8 35.98 19 59 1.59 84 289.3 5.97 <0.5 16 11 119 <1 <1 <1 <1 27 32 <1 <1 16 <50 <50 <1 <1 3.38 <10 6.6 <1 <1 <1 <1 <0.001 <0.001 29 73 DP-01 05/13/2015 Mixed(oxic-anoxic) 7.1 11.94 21 550 0.74 50 255 39.6 2.25 180 16 153 <1 <1 640 1180 148 163 <1 <1 180 409 378 <1 <1 98.3 <10 2.3 <1 <1 20.4 20.7 <0.001 <0.001 5810 8770 GW-03 05/14/2015 Mixed(oxic-anoxic)5.6 12.99 17 476 2.72 78 283.3 6.98 <0.5 55 <5 431 <1 <1 <1 <1 46 42 <1 <1 55 1360 1170 <1 <1 75.5 <10 39 <1 <1 <1 17.2 <0.001 <0.001 <10 485 MW-06S 04/15/2015 Anoxic 5.5 1.55 14 332 0.33 115 319.8 9.52 <0.5 12 23 399 <1 <1 <1 <1 86 84 <1 <1 12 1150 1090 <1 <1 22.9 <10 12 <1 <1 15.1 15.6 <0.001 <0.001 89 645 MW-06S 05/21/2015 Mixed(anoxic)5.3 4.51 16 343 0.45 51 256 3.94 <0.5 <10 19 62 <1 <1 <1 <1 85 83 <1 <1 <10 1090 1050 <1 <1 23.2 <10 12 <1 <1 6.66 6.17 <0.001 <0.001 163 225 MW-08S 03/06/2015 Mixed(oxic-anoxic)6.0 7.69 11 2013 0.79 41 246 4.25 <0.5 70 <5 124 <1 <1 <1 <1 249 251 <1 <1 70 4930 5030 <1 <1 274 <10 450 <1 <1 8.16 7.73 <0.001 <0.001 42 162 MW-08S 05/27/2015 Mixed(oxic-anoxic)5.9 6.93 23 1949 0.95 108 313 8.15 <0.5 78 <5 7 <1 <1 <1 <1 222 223 <1 <1 78 5210 5330 <1 <1 245 <10 450 <1 <1 3 3.09 <0.001 <0.001 30 17 MW-09S 04/27/2015 Mixed(oxic-anoxic)5.5 28.52 19 2252 2.04 132 337.3 4.16 <0.5 46 64 35 <1 <1 <1 <1 225 215 <1 <1 46 4870 4730 <1 <1 293 <10 560 <1 <1 17.4 15.8 <0.001 <0.001 105 70 MW-09S 05/21/2015 Mixed(oxic-anoxic)5.5 28.56 20 2291 1.19 37 242 5.59 <0.5 42 29 245 <1 <1 <1 <1 187 183 <1 <1 42 4840 4800 <1 <1 296 <10 570 <1 <1 5.85 5.9 <0.001 <0.001 18 211 MW-24S 05/11/2015 Mixed(oxic-anoxic)5.0 11.26 17 75 5.48 72 276.5 1.77 NM <10 49 174 <1 <1 <1 <1 55 57 <1 <1 <10 <50 <50 <1 <1 3.23 <10 12 <1 <1 1.84 2.05 0.00109 <0.001 221 304 MW-24S 06/01/2015 Mixed(oxic-anoxic)5.2 11.19 15 79 4.67 97 301.5 2.74 <0.5 <10 39 91 <1 <1 <1 <1 57 55 <1 <1 <10 <50 <50 <1 <1 3.15 <10 13 <1 <1 <1 1.02 <0.001 <0.001 37 60 P-100 05/19/2015 Anoxic 5.4 75.12 22 359 0.22 -124 81 9.01 <0.5 <10 22 220 <1 <1 <1 <1 41 43 <1 <1 <10 745 732 <1 <1 30.6 <10 12 1.3 12.7 34.8 35.9 <0.001 <0.001 62 545 P-101 05/19/2015 Anoxic 5.7 86.39 22 418 0.24 -6 199 2.53 <0.5 10 8 123 <1 <1 <1 <1 75 76 <1 <1 10 1240 1200 <1 <1 36.2 <10 12 <1 2.34 14.6 14.3 <0.001 <0.001 35 155 P-103 05/20/2015 Mixed(anoxic)5.6 48.53 20 209 0.19 -80 125 8.91 0.5 18 19 257 <1 <1 <1 <1 62 63 <1 <1 18 388 420 <1 <1 13.4 <10 11 <1 6.07 23.7 20 <0.001 <0.001 427 724 P-104 05/19/2015 Mixed(oxic-anoxic)5.7 44.84 21 222 0.87 -21 184 13.3 <0.5 30 12 670 <1 <1 <1 <1 48 48 <1 <1 30 208 194 <1 <1 20.3 <10 7.1 <1 1.64 26.4 26.8 0.00103 0.00106 28 737 P-105 05/13/2015 Mixed(oxic-anoxic)5.0 44.78 20 70 3.56 74 279 8.09 NM <10 36 412 <1 <1 <1 <1 24 28 <1 <1 <10 <50 <50 <1 <1 3.41 <10 9 <1 2.5 3.66 3.97 0.00162 0.0011 12 422 PZ-19 05/20/2015 5.7 24.34 22 450 2.48 117 322 9.77 <0.5 NA NA 379 NA 2.16 NA <1 NA 46 NA <1 NA NA 969 NA <1 46.6 NA 9.8 NA 4.34 NA <1 NA <0.001 NA 471 PZ-22 05/18/2015 Mixed(oxic-anoxic)5.5 3.07 17 467 0.56 35 240 5.73 2 14 6 104 <1 <1 <1 <1 51 53 <1 <1 14 1220 1210 <1 <1 45.8 <10 8.3 <1 <1 7.27 6.95 <0.001 <0.001 1860 2300 PZ-23 05/18/2015 Mixed(anoxic)5.4 21.4 17 228 0.42 147 352 9.22 0 20 11 332 <1 <1 <1 <1 59 64 <1 <1 20 250 226 <1 <1 13.1 <10 4.4 <1 <1 25 22.4 <0.001 <0.001 <10 358 PZ-24 05/19/2015 Mixed(oxic-anoxic)6.0 8.63 24 511 1.02 90 295.4 33.4 7 170 98 2480 <1 <1 <1 1.11 227 243 <1 <1 170 <50 <50 <1 <1 36.8 <10 6.8 1.09 4.49 3.94 4.35 <0.001 <0.001 66000 69200 PZ-26 05/19/2015 Oxic 4.8 27.08 20 42 1.94 101 306 9.44 <0.5 <10 38 213 <1 <1 <1 <1 42 45 <1 <1 <10 <50 <50 <1 <1 0.525 <10 2.8 <1 <1 2.1 2.23 0.00177 <0.001 <10 189 ABMW-04D 03/31/2015 Anoxic 6.1 36.62 16 366 0.25 9 214.2 5.08 3 50 21 385 <1 <1 1.52 2.15 83 85 <1 <1 50 1060 1050 <1 <1 31.7 <10 12 <1 <1 66.1 67.3 <0.001 <0.001 8010 8370 ABMW-04D 05/26/2015 Anoxic 5.7 37.05 18 375 0.45 212 417 6.47 3.5 51 21 315 <1 <1 2.36 2.68 83 85 <1 <1 51 1090 1080 <1 <1 34.6 <10 12 <1 <1 55.7 54.2 <0.001 <0.001 5550 6360 ABMW-04D DUP 05/26/2015 Anoxic 5.7 37.05 18 375 0.45 212 417 6.47 3.5 48 21 273 <1 <1 1.76 2.83 84 84 <1 <1 48 1070 1080 <1 <1 34.9 <10 13 <1 <1 53.8 54.6 <0.001 <0.001 5680 6290 ABMW-05D 04/12/2015 Mixed(anoxic)6.2 17.07 14 291 0.49 96 301 5.57 3.5 110 21 119 <1 <1 <1 <1 28 26 <1 <1 110 103 108 <1 <1 18 <10 9.8 <1 <1 2.02 1.2 <0.001 <0.001 19100 21100 ABMW-05D 05/26/2015 Anoxic 6.1 20.33 19 270 0.48 -96 109 9.39 4 98 34 148 <1 <1 <1 <1 19 16 <1 <1 98 106 106 <1 <1 16.7 <10 11 <1 <1 <1 <1 <0.001 <0.001 18500 19000 AMW-02A 05/19/2015 Mixed(oxic-anoxic)5.7 22.12 18 296 0.54 -34 171 9.4 <0.5 53 20 47 <1 <1 <1 <1 57 58 <1 <1 53 229 225 <1 <1 20.6 <10 8.2 <1 <1 21.8 21.2 0.00124 <0.001 15600 16800 CB-01D 04/28/2015 Mixed(oxic-anoxic) 6.7 38.22 17 75 1.56 1 206 7.52 <0.5 26 <5 266 <1 <1 <1 <1 19 24 <1 <1 26 <50 <50 <1 <1 5.12 <10 1.3 <1 7.04 2.03 2.54 <0.001 <0.001 246 528 CB-01D 05/21/2015 Mixed(oxic-anoxic)6.4 38.36 16 57 0.8 48 253 2.83 0.5 20 5 85 <1 <1 <1 <1 16 18 <1 <1 20 <50 <50 <1 <1 3.72 <10 1.1 <1 1.27 1.63 1.66 <0.001 <0.001 449 589 CB-03 05/19/2015 Anoxic 5.8 31.24 18 439 0.4 229 434 40.8 <0.5 17 6 867 <1 <1 <1 <1 37 40 <1 <1 17 929 947 <1 <1 34.2 <10 8.8 <1 <1 1.74 1.88 <0.001 0.00122 <10 844 CB-03R 04/08/2015 5.0 35.46 16 541 0.7 102 307.2 49.7 NM <5 NA 2000 NA <1 NA 1.08 NA 47 NA <1 <5 NA 571 NA <1 41.2 <5 11 NA 20 NA 17.1 NA 0.009 NA 6240 CB-03R 07/08/2015 Mixed(oxic-anoxic)4.5 35.33 18 644 1.75 152 357 5.97 NM <5 183 2090 <1 <1 <1 <1 58 76 <1 <1 <5 676 720 <1 <1 62.2 <5 10 <1 <5 30.4 29.9 0.0482 0.025 464 2980 CB-08 04/07/2015 5.1 50.29 16 1021 1.49 122 326.7 2.16 NM 8.5 NA 190 NA <1 NA <1 NA 201 NA <1 8.5 NA 2350 NA <1 119 <5 220 NA <5 NA 2.54 NA <0.005 NA 63 CB-08 DUP 04/07/2015 5.1 50.29 16 1021 1.49 122 326.7 2.16 NM 7.9 NA 199 NA <1 NA <1 NA 207 NA <1 7.9 NA 2330 NA <1 117 <5 220 NA <5 NA 2.76 NA <0.005 NA 76 CB-08 07/06/2015 Mixed(oxic-anoxic)5.1 49.45 16 964 1.94 297 502 2.35 NM 13.8 134 175 <1 <1 <1 <1 169 180 <1 <1 13.8 2350 2310 <1 <1 107 <5 220 <1 <5 2.89 2.68 0.0145 0.022 14 46 CB-08 DUP 07/06/2015 Mixed(oxic-anoxic)5.1 49.45 16 964 1.94 297 502 2.35 NM 13.5 NA 167 NA <1 NA <1 NA 177 NA <1 13.5 NA 2320 NA <1 105 <5 220 NA <5 NA 2.71 NA 0.026 NA 39 GW-01 04/07/2015 4.8 20.81 15 123 0.89 121 326 0.67 NM <5 NA 152 NA <1 NA <1 NA 59 NA <1 <5 NA <50 NA <1 7.3 <5 6.6 NA <5 NA 4.71 NA <0.005 NA 15 GW-01 07/06/2015 Mixed(oxic-anoxic)4.8 20.58 19 137 1.1 263 468 4.99 NM 5 138 251 <1 <1 <1 <1 55 57 <1 <1 5 <50 <50 <1 <1 8.39 <5 6.6 1.31 <5 4.54 4.76 <0.001 <0.005 <10 101 GW-01D 05/07/2015 Mixed(anoxic)5.4 20.66 19 63 0.38 75 280 7.3 <0.5 11 27 573 <1 <1 <1 <1 40 46 <1 <1 11 <50 <50 <1 <1 2.86 <10 5 <1 <1 7.47 7.77 0.00123 <0.001 340 951 Tr a n s i t i on Z o n e Eh Turbidity Al l u v i a l Sa p r o l i t e 15A NCAC 02L Standard Redox Assignment pH Reporting Units Analytical Parameter Field Parmeter Ferrous Iron Alkalinity Bi- carbonate Alkalinity Water Level Temp Spec Cond DO ORP Carbonate Alkalinity Chloride Analytical Results P:\Duke Energy Progress.1026\102. Asheville Ash Basin GW Assessment Plan\1.11 CSA Reporting\tables\Table 10-3 Groundwater Analytical Results Page 1 of 4 TABLE 10-3 GROUNDWATER ANALYTICAL RESULTS ASHEVILLE STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, ARDEN, NC Aluminum Aluminum Antimony Antimony Arsenic Arsenic Barium Barium Beryllium Beryllium Boron Boron Cadmium Cadmium Calcium Chromium Chromium Cobalt Cobalt Copper Copper Iron Iron DIS TOT DIS TOT DIS TOT DIS TOT DIS TOT DIS TOT DIS TOT TOT DIS TOT DIS TOT DIS TOT DIS TOT Unknown S.U. ft Deg C umhos /cm mg/l mV mV NTU mg/l mg/l ug/l ug/l ug/l ug/l ug/l ug/l ug/l ug/l ug/l ug/l mg/l ug/l ug/l ug/l ug/l mg/l mg/l mg/l ug/l ug/l ug/l ug/l mg/l mg/l ug/l ug/l 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 Collection Date Eh Turbidity 15A NCAC 02L Standard Redox Assignment pH Reporting Units Analytical Parameter Field Parmeter Ferrous Iron Alkalinity Bi- carbonate Alkalinity Water Level Temp Spec Cond DO ORP Carbonate Alkalinity Chloride Analytical Results GW-01D 05/28/2015 Mixed(anoxic)5.3 20.59 17 55 0.42 63 267.5 5.53 <0.5 13 34 139 <1 <1 <1 <1 38 41 <1 <1 13 <50 <50 <1 <1 2.51 <10 5.3 <1 <1 3.9 4.02 <0.001 <0.001 160 295 GW-04 05/18/2015 Mixed(oxic-anoxic)5.5 23.26 18 390 1.09 83 288 7.15 <0.5 <10 <5 80 <1 <1 <1 <1 47 53 <1 <1 <10 929 994 <1 <1 33 <10 10 4.93 4.93 <1 <1 <0.001 <0.001 <10 67 MW-01D 05/11/2015 Mixed(oxic-anoxic)5.3 28.94 20 68 2.02 87 291.7 1.35 <0.5 <10 38 80 <1 <1 <1 <1 21 22 <1 <1 <10 <50 <50 <1 <1 2.55 <10 2.7 <1 <1 16.3 15.4 0.00111 <0.001 72 107 MW-01D 05/21/2015 Mixed(oxic-anoxic)5.5 29.02 18 71 0.65 62 267 3.54 0.5 12 38 95 <1 <1 <1 <1 20 20 <1 <1 12 <50 <50 <1 <1 3.04 <10 2.9 <1 <1 9.35 9.45 0.00115 <0.001 189 360 MW-03D 05/07/2015 Mixed(oxic-anoxic)6.3 38.88 16 394 0.82 -13 192 35.9 4 14 19 228 <1 <1 <1 <1 40 44 <1 <1 14 480 531 <1 <1 31.9 <10 10 <1 194 1.98 3.88 <0.001 0.00615 8240 12000 MW-03D 05/21/2015 Anoxic 6.0 39.44 20 385 0.33 89 294 4.76 5.5 26 32 73 <1 <1 <1 <1 32 37 <1 <1 26 541 469 <1 <1 30.9 <10 11 <1 <1 <1 <1 <0.001 <0.001 15900 12700 MW-04D 04/28/2015 Mixed(oxic-anoxic)5.5 8.35 13 54 6.4 83 288 5.19 <0.5 <10 18 450 <1 <1 <1 <1 27 39 <1 <1 <10 <50 <50 <1 <1 2.83 <10 2.9 <1 <1 12.4 12.2 0.00157 <0.001 <10 582 MW-04D 05/21/2015 Mixed(oxic-anoxic)5.1 9.65 16 46 5.04 167 372 2.62 <0.5 <10 30 49 <1 <1 <1 <1 31 32 <1 <1 <10 <50 <50 <1 <1 2.15 <10 3.1 <1 <1 6.24 5.28 0.00131 <0.001 <10 34 MW-05D 05/07/2015 Mixed(oxic-anoxic)5.5 17.95 14 401 4.74 64 269 0.89 2.5 <10 114 130 <1 <1 <1 <1 39 40 <1 <1 <10 528 505 <1 <1 28.7 <10 9 <1 <1 51.4 48 0.00343 0.00301 8900 10100 MW-05D DUP 05/07/2015 Mixed(oxic-anoxic)5.5 17.95 14 401 4.74 64 269 0.89 2.5 <10 116 135 <1 <1 <1 <1 38 39 <1 <1 <10 511 505 <1 <1 28.2 <10 9 <1 <1 50.9 49.9 0.00375 0.00331 8810 9590 MW-05D 05/27/2015 Mixed(oxic-anoxic)4.0 18.49 17 389 1.7 93 297.7 2.82 NM <10 501 481 <1 <1 <1 <1 47 47 <1 <1 <10 524 518 <1 <1 27.9 <10 9.2 <1 <1 39 39.1 0.0126 0.0105 534 484 MW-06D 04/15/2015 Anoxic 5.8 1.63 15 392 0.32 121 325.7 5.42 <0.5 31 9 282 <1 <1 <1 <1 76 85 <1 <1 31 1700 1750 <1 <1 44.8 <10 11 3.68 1.25 6.14 7.47 <0.001 <0.001 <10 406 MW-06D 05/21/2015 Anoxic 5.5 4.61 18 383 0.34 428 633 1.06 <0.5 11 14 21 <1 <1 <1 <1 71 69 <1 <1 11 1700 1680 <1 <1 43.2 <10 11 <1 <1 4.17 3.85 <0.001 <0.001 15 23 MW-09D 05/04/2015 Mixed(oxic-anoxic)5.8 29.2 16 2175 3.7 37 242 5.57 2.5 40 45 187 <1 <1 <1 <1 302 304 <1 <1 40 4480 4420 <1 <1 254 <10 500 <1 <1 25.9 26.9 0.00102 <0.001 3170 3300 MW-09D 05/21/2015 Mixed(anoxic)5.5 29.16 18 2175 0.39 -138 67 1.99 1.5 43 37 56 <1 <1 <1 <1 233 237 <1 <1 43 4630 4620 <1 <1 253 <10 470 <1 <1 16.9 17.8 <0.001 <0.001 1590 2170 MW-11D 02/12/2015 Mixed(oxic-anoxic)5.9 9.13 7 602 5.67 38 242.6 5.37 2 50 32 214 <1 <1 <1 <1 238 242 <1 <1 50 90 88 <1 <1 50 <10 130 <1 1.07 4.71 4.21 <0.001 0.0011 1760 1870 MW-11D 05/20/2015 Mixed(oxic-anoxic)5.3 8.88 18 595 3.4 91 296 4.01 <0.5 13 128 176 <1 <1 <1 <1 282 288 <1 <1 13 67 65 <1 <1 37.7 <10 130 <1 <1 1.06 1.11 <0.001 <0.001 <10 91 MW-12D 03/31/2015 Mixed(oxic-anoxic)5.5 35.78 19 94 3.04 72 277.2 7.93 <0.5 13 45 384 <1 <1 <1 <1 61 63 <1 <1 13 <50 <50 <1 <1 3.64 <10 8 <1 3.35 10.7 11 <0.001 <0.001 73 433 MW-12D 05/21/2015 Mixed(oxic-anoxic)5.2 35.67 19 78 3.13 102 307 6.84 <0.5 <10 60 170 <1 <1 <1 <1 60 61 <1 <1 <10 <50 <50 <1 <1 3.92 <10 9.9 <1 <1 2.34 2.15 0.00144 <0.001 <10 118 MW-13D 02/12/2015 Mixed(oxic-anoxic) 6.8 27.93 8 223 3.65 -11 194 7.28 <0.5 89 11 339 <1 <1 <1 <1 28 34 <1 <1 89 <50 <50 <1 <1 33.2 <10 4.4 <1 <1 4.27 4.11 <0.001 <0.001 129 515 MW-13D 05/20/2015 Mixed(oxic-anoxic) 6.6 29.91 18 165 0.5 -168 37 2.93 2.5 59 18 74 <1 <1 <1 <1 21 22 <1 <1 59 <50 <50 <1 <1 18.4 <10 4.4 <1 <1 7.01 6.75 <0.001 <0.001 2440 2780 MW-15D 03/04/2015 Mixed(oxic-anoxic)6.2 4.85 14 132 1.53 48 253 4.33 <0.5 39 5 134 <1 <1 <1 <1 62 62 <1 <1 39 <50 <50 <1 <1 8.9 <10 7.3 <1 <1 <1 <1 0.007 <0.001 12 202 MW-15D 05/20/2015 Mixed(oxic-anoxic)5.7 6.9 15 94 2.78 72 277 1.83 <0.5 30 5 16 <1 <1 <1 <1 59 58 <1 <1 30 <50 <50 <1 <1 7.15 <10 7.7 <1 <1 <1 <1 <0.001 <0.001 77 109 MW-18D 05/04/2015 Mixed(oxic-anoxic)5.8 7.5 13 874 1.35 115 320.2 4.26 2.5 43 15 168 <1 <1 <1 <1 66 67 <1 <1 43 796 807 <1 <1 110 <10 88 <1 <1 6.95 7.35 <0.001 <0.001 3670 3530 MW-18D 05/28/2015 Mixed(oxic-anoxic)6.1 8.27 17 914 0.78 -126 79.4 5.04 2 62 19 93 <1 <1 <1 <1 53 54 <1 <1 62 789 793 <1 <1 118 <10 94 <1 <1 4.43 4.61 <0.001 <0.001 6810 6960 MW-21D 06/30/2015 Mixed(oxic-anoxic)6.2 2.77 19 301 4.6 -96 109.3 1.92 NM 69 12 56 <1 <1 <1 <1 37 40 <1 <1 69 72 79 <1 <1 20.9 <10 21 <1 <1 1.42 1.66 0.035 <0.001 6690 4640 MW-22D 06/30/2015 Mixed(oxic-anoxic)5.3 8.61 18 142 3.06 108 312.7 4.27 NM <10 37 164 <1 <1 <1 <1 26 28 <1 <1 <10 <50 <50 <1 <1 6.05 <10 24 <1 <1 2.39 2.5 0.00105 <0.001 20 184 MW-23DL 06/30/2015 Anoxic 7.1 5.55 19 281 0.46 -264 -58.6 4.97 NM 86 26 169 <1 <1 <1 <1 15 16 <1 <1 86 <50 <50 <1 <1 31.4 <10 4 <1 <1 <1 <1 <0.001 <0.001 9240 11200 MW-23DU 06/24/2015 Mixed(oxic-anoxic)5.6 5.2 19 145 2.24 67 272.3 1.45 NM 25 14 83 <1 <1 <1 <1 50 50 <1 <1 25 94 87 <1 <1 6.72 <10 7.3 <1 <1 35.9 36.9 0.00172 <0.001 98 162 PZ-16 05/18/2015 Oxic 5.8 49.02 21 326 3.95 114 318.9 21.7 <0.5 37 <5 710 <1 <1 <1 <1 26 27 <1 <1 37 694 684 <1 <1 37.3 <10 4.9 2.06 11.5 <1 1.31 <0.001 0.00135 <10 877 ABMW-05BR 04/13/2015 Mixed(oxic-anoxic)6.4 23.88 15 221 0.86 90 295.1 1.57 4 73 20 47 <1 <1 <1 <1 18 20 <1 <1 73 <50 <50 <1 <1 15.4 <10 7.9 <1 <1 1.41 1.45 <0.001 <0.001 15900 17300 ABMW-05BR 05/27/2015 Anoxic 7.2 24.25 18 301 0.29 -245 -40 57.4 2 91 9 62 <1 <1 <1 <1 29 31 <1 <1 91 <50 <50 <1 <1 21.9 <10 8.7 <1 10.5 3.54 4.21 <0.001 <0.001 7740 11400 AMW-01B 05/19/2015 Anoxic 7.1 41.41 18 430 0.41 -230 -25 8.96 3 51 35 95 <1 <1 <1 <1 <5 <5 <1 <1 51 421 422 <1 <1 53.5 <10 9.3 <1 <1 <1 <1 <0.001 <0.001 5910 6660 AMW-03B 05/12/2015 Oxic 7.7 8.27 16 83 0.84 -69 136 6.86 <0.5 33 <5 113 <1 <1 <1 <1 5 7 <1 <1 33 <50 <50 <1 <1 6.14 <10 <2.5 <1 <1 <1 <1 <0.001 <0.001 12 47 CB-04B 04/08/2015 7.1 24.35 18 257 0.74 -7 198.4 2.42 NM 31.1 NA 30 NA <1 NA 1.62 NA 20 NA <1 31.1 NA <50 NA <1 17.8 <5 6.2 NA <5 NA <1 NA <0.005 NA 625 CB-04B 07/07/2015 Oxic 6.9 24.8 19 263 4.04 174 379 3.1 NM 33.5 <5 39 <1 <1 <1 <1 19 21 <1 <1 33.5 <50 <50 <1 <1 19.7 <5 6.2 <1 <5 <1 <1 <0.001 <0.005 20 315 CB-08BR 05/11/2015 Mixed(oxic-anoxic) 6.7 48.76 16 458 4.51 44 248.5 5.39 <0.5 98 <5 93 <1 <1 <1 <1 34 40 <1 <1 98 291 343 <1 <1 65.5 <10 47 <1 3.83 <1 <1 <0.001 <0.001 172 311 CB-08BR 05/22/2015 Mixed(oxic-anoxic) 6.8 48.55 15 352 1.89 -55 150 9.14 <0.5 92 <5 110 <1 <1 <1 <1 22 25 <1 <1 92 175 171 <1 <1 46.9 <10 26 <1 <1 <1 <1 <0.001 <0.001 345 601 CB-09 BR 04/27/2015 Suboxic 8.9 44.46 16 185 0.49 123 327.8 16.2 <0.5 76 33 405 <1 <1 <1 <1 19 26 <1 <1 76 <50 <50 <1 <1 24.7 <10 6.4 <1 8.25 <1 <1 <0.001 0.00116 <10 460 CB-09BR 05/28/2015 Mixed(anoxic) 6.5 48.57 16 135 0.36 69 274.4 10.8 <0.5 54 <5 160 <1 <1 <1 <1 18 33 <1 <1 54 <50 <50 <1 <1 16.1 <10 6.4 <1 <1 <1 <1 <0.001 <0.001 232 402 GW-01BR 05/14/2015 Mixed(oxic-anoxic) 7.0 23.71 19 162 2.42 57 261.6 4.72 1.5 57 7 80 <1 <1 <1 <1 12 12 <1 <1 57 <50 <50 <1 <1 17.4 <10 1.3 <1 <1 <1 <1 <0.001 <0.001 1520 1780 GW-01BR 05/27/2015 Mixed(oxic-anoxic) 7.8 22.67 20 171 2.13 -211 -6 11.3 <0.5 65 10 69 <1 <1 <1 <1 11 11 <1 <1 65 <50 <50 <1 <1 18.5 <10 1.5 <1 <1 <1 <1 <0.001 <0.001 445 946 GW-02 05/14/2015 Mixed(oxic-anoxic)5.5 42.95 18 900 2.99 77 281.6 6.81 <0.5 21 124 274 <1 <1 1.44 1.02 250 273 <1 <1 21 1030 1050 <1 <1 112 <10 230 <1 <1 12.7 11.9 <0.001 <0.001 14 115 MW-01BR 05/11/2015 Mixed(oxic-anoxic) 6.8 23.36 18 129 2.53 44 249.2 9.81 <0.5 50 8 136 <1 <1 <1 <1 16 18 <1 <1 50 <50 <50 <1 <1 12.6 <10 1.6 <1 <1 <1 <1 <0.001 <0.001 926 1370 MW-01BR 05/21/2015 Mixed(oxic-anoxic) 7.0 23.31 19 135 1.55 53 258 3.9 <0.5 54 <5 121 <1 <1 <1 <1 16 15 <1 <1 54 <50 <50 <1 <1 14.1 <10 1.2 <1 <1 <1 <1 <0.001 <0.001 218 713 MW-02BR 04/13/2015 Suboxic 9.0 31.01 15 270 0.2 104 308.5 2.44 <0.5 60 20 86 <1 <1 <1 <1 <5 <5 <1 <1 53 71 67 <1 <1 34.8 <10 5.7 <1 2.1 <1 <1 <0.001 <0.001 <10 95 MW-02BR 05/21/2015 Suboxic 8.8 31.34 15 274 0.19 67 272 2 <0.5 59 20 50 <1 <1 <1 <1 <5 <5 <1 <1 58 63 64 <1 <1 35.1 <10 5.4 <1 <1 <1 <1 <0.001 <0.001 12 61 MW-05BR 05/04/2015 Anoxic 8.1 17.89 21 376 0.12 36 241.1 14.5 4 29 14 111 <1 <1 <1 <1 17 19 <1 <1 29 411 418 <1 <1 39.9 <10 6.6 <1 <1 <1 <1 <0.001 <0.001 11400 18800 MW-05BR 05/28/2015 Anoxic 6.9 19.23 16 422 0.29 26 230.8 4.6 1.5 33 45 71 <1 <1 <1 <1 19 23 <1 <1 33 464 454 <1 <1 36.1 <10 8.4 <1 <1 <1 <1 <0.001 <0.001 28900 27900 MW-09BR 05/04/2015 Mixed(oxic-anoxic) 7.2 31.98 19 1022 4.39 -22 183 14.9 <0.5 77 7 44 <1 <1 <1 <1 121 129 <1 <1 77 489 490 <1 <1 121 <10 190 <1 <1 <1 <1 <0.001 <0.001 289 1570 MW-09BR 05/21/2015 Mixed(oxic-anoxic) 6.7 31.9 20 1039 3.01 -107 98 15.5 1.5 73 6 12 <1 <1 <1 <1 96 100 <1 <1 73 554 530 <1 <1 129 <10 200 <1 <1 <1 <1 <0.001 <0.001 1390 2540 MW-13BR 03/03/2015 Mixed(oxic-anoxic)6.4 28 11 104 4.55 8 213 8.04 <0.5 32 12 173 <1 <1 <1 <1 26 27 <1 <1 32 <50 <50 <1 <1 10.3 <10 4.6 <1 <1 1.68 1.7 <0.001 <0.001 144 335 MW-13BR DUP 03/03/2015 Mixed(oxic-anoxic)6.4 28 11 104 4.55 8 213 8.04 <0.5 30 11 162 <1 <1 <1 <1 25 26 <1 <1 30 <50 <50 <1 <1 10.5 <10 4.6 <1 <1 1.73 1.74 <0.001 <0.001 142 319 MW-13BR 05/20/2015 Mixed(oxic-anoxic)5.4 30.03 18 52 2.53 53 258 3.16 <0.5 <10 35 50 <1 <1 <1 <1 29 30 <1 <1 <10 <50 <50 <1 <1 2.51 <10 4.4 <1 <1 <1 <1 <0.001 <0.001 43 76 MW-14BR 02/13/2015 Mixed(oxic-anoxic) 7.0 16.44 8 524 4.71 9 214.4 2.6 <0.5 98 <5 70 <1 <1 <1 <1 93 93 <1 <1 97 422 421 <1 <1 73.3 <10 6.9 <1 <1 <1 <1 <0.001 <0.001 <10 76 MW-14BR 05/20/2015 Oxic 6.8 13.74 16 595 1.83 65 270 3.05 <0.5 97 <5 24 <1 <1 <1 <1 74 78 <1 <1 97 377 386 <1 <1 83.5 <10 6.3 <1 <1 <1 <1 <0.001 <0.001 <10 31 MW-16BR 03/11/2015 Anoxic 6.3 9.67 13 529 0.43 -63 142 9.7 3 21 35 263 <1 <1 <1 <1 32 329 <1 <1 21 <50 109 <1 <1 28 <10 120 <1 <1 3.76 3.49 <0.001 <0.001 5530 60100 MW-16BR 05/28/2015 Anoxic 5.9 10.1 15 515 0.12 -165 40 4.14 2.5 26 83 128 <1 <1 <1 <1 283 288 <1 <1 26 116 117 <1 <1 22.8 <10 120 <1 <1 1.47 1.61 <0.001 <0.001 56600 56900 MW-18BR 05/04/2015 Mixed(oxic-anoxic)5.9 7.92 16 923 1.4 123 328.1 5.39 <0.5 47 9 66 <1 <1 <1 <1 49 48 <1 <1 47 878 892 <1 <1 123 <10 97 <1 <1 <1 <1 <0.001 <0.001 27 92 MW-18BR 05/28/2015 Mixed(oxic-anoxic)5.7 8.45 17 900 0.81 2 206.6 1.95 <0.5 42 12 30 <1 <1 <1 <1 43 43 <1 <1 42 861 851 <1 <1 125 <10 96 <1 <1 1.05 1.02 <0.001 <0.001 122 125 MW-22BR 06/30/2015 Mixed(oxic-anoxic)6.4 14.56 17 291 0.78 -130 74.6 5.69 NM 42 36 198 <1 <1 <1 <1 22 22 <1 <1 42 <50 <50 <1 <1 13.6 <10 38 <1 <1 <1 <1 0.187 <0.001 14300 16000 PZ-17D 05/15/2015 Mixed(oxic-anoxic)5.8 56.41 16 481 0.77 39 243.8 9.74 <0.5 62 <5 73 <1 <1 <1 <1 58 60 <1 <1 62 870 889 <1 <1 63.7 <10 9.4 1.29 8.66 <1 <1 <0.001 <0.001 192 450 PZ-17S 05/15/2015 Oxic 5.4 27.44 17 71 5.89 173 378 1.38 <0.5 <10 43 61 <1 <1 <1 <1 69 72 <1 <1 <10 53 <50 <1 <1 4.73 <10 1.9 <1 <1 <1 <1 0.00185 0.00188 <10 17 Prepared by: BER/SRW Checked by: KLS Notes: - Bold highlighted concentration indicates exceedance of the 15A NCAC 02L Standard, Appendix 2, April 1, 2013. ORP = Oxidation Reduction Potential NE = Not established mV = millivolts DIS = Dissolved NTU = nephelometric turbidity unit TOT = Total S.U. = Standard Unit Temp = Temperature ug/l = microgram per liter DO = Dissolved Oxygen umhos/cm = micro mhos per centimeter Deg C = Degree Celsius Spec Cond = Specific Conductance mg/l = milligrams per liter NM = Not Measured mg-N/L = miligram nitrogen per liter DUP = Duplicate Qualitative Redox State derived using USGS Excel® Workbook for Identifying Redox Processes in ground water. < = concentration not detected at or above the reporting limit. * - Interim Maximum Allowable Concentrations (IMACs) of the 15A NCAC 02L Standard, Appendix 1, April, 1, 2013. NA = Not analyzed for March/June 2015 NPDES Compliance Sampling Event Be d r o c k Tr a n s i t i on Z o n e P:\Duke Energy Progress.1026\102. Asheville Ash Basin GW Assessment Plan\1.11 CSA Reporting\tables\Table 10-3 Groundwater Analytical Results Page 2 of 4 TABLE 10-3 GROUNDWATER ANALYTICAL RESULTS ASHEVILLE STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, ARDEN, NC Lead Lead Magnesium Manganese Manganese Mercury Mercury Molybdenum Molybdenum Nickel Nickel Potassium Selenium Selenium Sodium Strontium Strontium Thallium Thallium Vanadium Vanadium Zinc Zinc DIS TOT TOT DIS TOT DIS TOT DIS TOT DIS TOT TOT DIS TOT TOT DIS TOT DIS TOT DIS TOT DIS TOT Unknown ug/l ug/l mg/l ug/l ug/l ug/l 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 NE 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 Collection Date CB-05 04/06/2015 NA <1 4.29 NA 594 NA <0.05 NA NA <1 NA <5 NA 0.706 NA <1 15.9 NA NA 15 NA NA 0.239 150 NA <5 NA NA NA <0.005 CB-05 07/09/2015 Mixed(oxic-anoxic) <1 <1 4.13 415 488 <0.05 <0.05 570 <1 <1 <1 <5 <0.023 0.875 <1 <1 17.4 0.033 0.033 8.9 <0.1 <0.2 <0.2 150 9.9 <5 0.491 0.855 <0.005 <0.005 CB-06 04/06/2015 NA <1 12.2 NA 3330 NA <0.05 NA NA <1 NA <5 NA 4.37 NA <1 23.2 NA NA 170 NA NA <0.2 360 NA <5 NA NA NA <0.005 CB-06 07/08/2015 Mixed(oxic-anoxic) <1 <1 15.5 3810 3950 <0.05 <0.05 57 <1 <1 <1 <5 <0.023 6.88 <1 <1 37.4 0.394 0.409 110 <0.1 <0.2 <0.2 520 2.3 <5 <0.3 <0.3 0.019 <0.005 CB-07 04/06/2015 NA <1 11.6 NA <5 NA <0.05 NA NA <1 NA <5 NA 4.21 NA 21.3 23.1 NA NA 36 NA NA <0.2 310 NA <5 NA NA NA <0.005 CB-07 07/08/2015 Oxic <1 <1 7.38 5 <5 <0.05 <0.05 <10 <1 <1 <1 <5 0.49 3.5 14.3 14.6 19.9 0.184 0.172 56 <0.1 <0.2 <0.2 190 0.994 <5 0.344 0.574 0.186 <0.005 MW-10 05/12/2015 Mixed(oxic-anoxic) <1 <1 2.59 365 340 <0.05 <0.05 230 <1 <1 3.45 3.1 0.096 1.36 <1 <1 4.02 0.024 0.024 0.3 <0.1 <0.2 <0.2 44 0.71 <5 <0.3 <0.3 0.051 0.085 MW-11 05/20/2015 Mixed(oxic-anoxic) <1 <1 10.2 264 407 <0.05 <0.05 <10 <1 <1 2.26 3.53 0.8 1.08 <1 <1 25.8 0.108 0.096 25 <0.1 <0.2 <0.2 220 1.1 <5 <0.3 <0.3 0.007 <0.005 MW-15A 03/04/2015 Mixed(oxic-anoxic) <1 <1 4.61 1080 1060 <0.05 <0.05 <10 <1 <1 <1 <1 0.125 1.11 <1 <1 14.8 0.117 0.12 5.3 <0.5 <0.2 <0.2 120 0.583 <5 <0.3 <0.3 0.009 0.007 MW-15A 05/20/2015 Mixed(anoxic) <1 <1 4.22 814 840 <0.05 <0.05 <10 <1 <1 <1 <1 0.177 0.884 <1 <1 11.7 0.1 0.102 5.3 <0.1 <0.2 <0.2 99 0.395 <5 <0.3 <0.3 0.007 <0.005 MW-16A 03/11/2015 Mixed(oxic-anoxic) <1 <1 11.7 1880 1980 <0.05 <0.05 <10 <1 <1 <1 <1 <0.01 2.67 <1 <1 14.9 0.181 0.184 33 <0.1 <0.2 <0.2 260 2 <5 <0.3 <0.3 <0.005 <0.005 MW-16A DUP 03/11/2015 Mixed(oxic-anoxic) <1 <1 11.6 1860 2000 <0.05 <0.05 12 <1 <1 <1 <1 <0.01 2.72 <1 <1 14.7 0.179 0.186 36 <0.1 <0.2 <0.2 260 2.1 <5 <0.3 <0.3 <0.005 <0.005 MW-16A 05/28/2015 Mixed(oxic-anoxic) <1 <1 12.6 1960 1940 <0.05 <0.05 <10 <1 <1 <1 <1 0.022 2.57 <1 <1 17.5 0.204 0.203 33 <0.1 <0.2 <0.2 350 0.725 <5 <0.3 <0.3 <0.005 <0.005 MW-17A 03/03/2015 Mixed(oxic-anoxic) <1 <1 39.8 17300 12800 <0.05 <0.05 11 <1 <1 4.06 5.16 <0.01 4.23 <1 <1 15.4 0.569 0.507 140 <0.5 <0.2 <0.2 1300 5.1 19 <0.3 0.401 0.018 0.019 MW-17A 05/21/2015 Anoxic <1 <1 51 14900 11900 <0.05 <0.05 81 1.07 <1 7.13 4.77 0.056 4.51 <1 <1 14 0.601 0.536 160 <0.1 <0.2 <0.2 1200 3.9 67 0.347 2.63 0.077 0.048 MW-20A 06/24/2015 Mixed(oxic-anoxic) <1 <1 14 15900 15800 <0.05 <0.05 73 <1 <1 26.7 25.1 0.094 7.45 1 1.18 17.5 0.554 0.548 220 <0.5 <0.2 <0.2 480 3.8 5 <0.3 0.328 0.063 0.01 ABMW-02S 03/17/2015 Mixed(anoxic) <1 <1 22.3 17000 17500 <0.05 <0.05 <10 <1 <1 229 233 1.4 5.67 7.55 10.7 19.3 0.251 0.258 610 <1 0.267 0.369 640 0.421 <5 <0.3 <0.3 0.499 0.503 ABMW-02S 05/27/2015 Mixed(anoxic) <1 <1 22.2 16600 16200 <0.05 <0.05 11 <1 <1 232 247 1.4 5.05 10.1 10.8 15.7 0.254 0.259 730 <0.2 0.243 0.333 670 0.359 12 <0.3 0.666 0.517 0.48 ABMW-02S DUP 05/27/2015 Mixed(anoxic) <1 <1 22.7 16700 16500 <0.05 <0.05 11 <1 <1 236 245 1.3 5.08 10.4 10.3 15.7 0.253 0.262 720 <0.2 0.256 0.329 660 0.363 7 <0.3 0.421 0.514 0.484 ABMW-05S 04/13/2015 Mixed(oxic-anoxic) <1 <1 12.2 393 395 <0.05 <0.05 28 <1 <1 2.15 2.28 <0.01 1.76 <1 <1 7.16 0.088 0.087 17 <2 <0.2 <0.2 130 0.82 <5 <0.3 <0.3 0.009 <0.005 ABMW-05S 05/26/2015 Mixed(anoxic) <1 <1 12.6 521 537 <0.05 <0.05 32 <1 <1 3.33 3.37 0.017 1.29 <1 <1 6.34 0.083 0.083 20 <0.5 <0.2 0.309 130 0.698 <5 <0.3 <0.3 0.008 0.006 ABMW-07S 04/12/2015 Mixed(oxic-anoxic) <1 <1 5.59 768 798 <0.05 <0.05 52 101 103 <1 <1 0.224 8.85 4.29 3.65 13.9 0.337 0.333 82 <0.1 0.396 0.311 190 0.78 <5 0.344 0.76 0.007 0.007 ABMW-07S 05/27/2015 Mixed(oxic-anoxic) <1 <1 6.59 740 763 <0.05 <0.05 37 119 122 <1 <1 0.326 10.1 1.75 1.65 11.6 0.433 0.442 120 <0.2 0.426 0.664 200 0.424 <5 <0.3 <0.3 0.022 0.007 AMW-03A 05/12/2015 Oxic <1 <1 0.007 <5 <5 <0.05 <0.05 <10 1.47 <1 <1 <1 0.071 8.77 <1 <1 7.7 1.11 1.22 0.34 <0.1 <0.2 <0.2 500 0.352 <5 8.78 8.98 0.013 <0.005 APD-07 05/13/2015 Oxic <1 <1 6.76 14 12 <0.05 <0.05 <10 <1 <1 <1 <1 0.727 0.597 20 19 4.07 0.046 0.047 27 <0.1 <0.2 <0.2 96 0.261 <5 <0.3 <0.3 <0.005 <0.005 CB-01 04/07/2015 NA <1 0.407 NA 26 NA <0.05 NA NA <1 NA <5 NA 0.548 NA <1 1.04 NA NA 0.36 NA NA <0.2 31 NA <5 NA NA NA 0.022 CB-01 07/06/2015 Oxic <1 <1 0.448 25 25 <0.05 <0.05 <10 <1 <1 1.13 <5 0.4 0.409 <1 <1 0.993 <0.005 <0.005 0.61 <0.1 <0.2 <0.2 <25 0.106 <5 <0.3 <0.3 0.082 0.077 CB-02 04/07/2015 NA <1 3.52 NA 3030 NA <0.05 NA NA <1 NA <5 NA 0.912 NA <1 9.94 NA NA 38 NA NA <0.2 100 NA <5 NA NA NA 0.01 CB-02 07/07/2015 Mixed(oxic-anoxic) <1 <1 3.46 2930 3000 <0.05 <0.05 <10 <1 <1 <1 <5 2.2 0.838 <1 <1 10 0.014 0.013 35 <0.1 <0.2 <0.2 93 0.281 <5 <0.3 <0.3 0.02 0.008 CB-04 04/08/2015 NA <1 6.76 NA 747 NA <0.05 NA NA <1 NA <5 NA 2.64 NA 8 18.1 NA NA 140 NA NA <0.2 240 NA 5 NA NA NA <0.005 CB-04 07/08/2015 Mixed(oxic-anoxic) <1 1.57 7.88 876 920 <0.05 0.06 <10 <1 <1 1.46 <5 3.5 3.49 6.78 7.58 17.7 0.215 0.213 130 <0.1 <0.2 <0.2 230 0.261 28 <0.3 4.68 0.045 0.015 CB-09 04/07/2015 NA <1 1.03 NA 50 NA <0.05 NA NA <1 NA <5 NA 0.76 NA <1 4.1 NA NA 0.24 NA NA <0.2 35 NA 6 NA NA NA 0.015 CB-09 07/06/2015 Oxic <1 <1 0.976 35 40 <0.05 <0.05 <10 <1 <1 1.1 <5 <0.01 0.704 <1 <1 4.06 0.008 0.008 0.11 <0.2 <0.2 <0.2 25 0.158 <5 <0.3 <0.3 0.038 0.037 CB-09SL 04/27/2015 Mixed(oxic-anoxic) <1 <1 2.56 96 125 <0.05 <0.05 <10 1.28 <1 <1 2.13 0.086 1.41 <1 <1 8.54 0.029 0.04 0.74 <0.5 <0.2 <0.2 92 0.397 110 <0.3 0.56 0.039 0.049 CB-09SL 05/28/2015 Mixed(oxic-anoxic) <1 <1 1.77 69 71 <0.05 <0.05 <10 1.24 1.25 <1 <1 0.206 1.28 <1 <1 4.15 0.026 0.028 0.57 <0.2 <0.2 <0.2 43 0.209 6 <0.3 <0.3 0.016 0.012 DP-01 05/13/2015 Mixed(oxic-anoxic) <1 <1 8.96 1580 1570 <0.05 <0.05 23 49.5 51.6 3.46 3.64 0.015 8.18 <1 <1 6.22 1.81 1.81 96 <0.1 <0.2 <0.2 370 0.49 22 0.762 3.12 <0.005 <0.005 GW-03 05/14/2015 Mixed(oxic-anoxic) <1 <1 21.4 455 555 <0.05 <0.05 <10 <1 <1 <1 <1 0.606 3.08 2 2.84 12.5 0.813 0.679 170 <5 <0.2 <0.2 440 0.671 7 <0.3 0.301 0.006 <0.005 MW-06S 04/15/2015 Anoxic <1 <1 10.8 10600 10000 <0.05 <0.05 15 <1 <1 1.31 1.9 0.077 2.6 <1 <1 14.1 0.155 0.147 120 <0.2 <0.2 <0.2 220 0.44 8 <0.3 0.543 <0.005 <0.005 MW-06S 05/21/2015 Mixed(anoxic) <1 <1 10.7 10000 9970 <0.05 <0.05 12 <1 <1 <1 <1 0.051 2.34 <1 <1 14.6 0.139 0.141 130 <0.1 <0.2 <0.2 220 0.345 <5 <0.3 <0.3 <0.005 0.005 MW-08S 03/06/2015 Mixed(oxic-anoxic) <1 <1 79.9 2840 2850 <0.05 <0.05 <10 1.51 1.59 2.3 2.47 0.13 2.02 1.08 1.17 18.8 4.38 4.41 260 <1 <0.2 <0.2 1500 0.348 <5 <0.3 0.342 0.037 0.009 MW-08S 05/27/2015 Mixed(oxic-anoxic) <1 <1 78.5 2970 2830 <0.05 <0.05 <10 3.03 3.2 1.89 1.65 0.123 1.91 1.21 1.41 15 4.14 4.16 290 <0.2 <0.2 <0.2 1900 0.294 <5 <0.3 <0.3 0.011 0.014 MW-09S 04/27/2015 Mixed(oxic-anoxic) <1 <1 91.3 4580 4290 0.08 <0.05 <10 <1 <1 5.27 5.24 0.695 4.76 41.9 36.6 18.1 3.26 3.08 250 <0.5 0.225 0.294 1700 0.357 <5 <0.3 <0.3 0.009 0.009 MW-09S 05/21/2015 Mixed(oxic-anoxic) <1 <1 87.7 3870 3630 <0.05 0.22 <10 <1 <1 3.46 3.92 0.666 3.94 39.3 40.6 17.5 3.04 2.95 270 <0.5 0.213 <0.2 1700 0.246 <5 <0.3 <0.3 0.04 0.049 MW-24S 05/11/2015 Mixed(oxic-anoxic) <1 <1 3.6 160 170 <0.05 <0.05 <10 <1 <1 1.23 1.16 1.2 1.61 <1 <1 3.48 0.037 0.037 0.49 <0.1 <0.2 <0.2 54 0.307 <5 <0.3 <0.3 0.009 0.008 MW-24S 06/01/2015 Mixed(oxic-anoxic) <1 <1 3.4 137 136 <0.05 <0.05 <10 <1 <1 <1 1.07 1.2 1.54 <1 <1 3.25 0.041 0.036 0.62 <0.1 <0.2 <0.2 66 0.211 <5 <0.3 <0.3 0.009 <0.005 P-100 05/19/2015 Anoxic <1 <1 8.4 3360 3380 <0.05 <0.05 <10 <1 <1 8.44 13.6 0.013 0.851 <1 <1 17.2 0.018 0.018 140 <0.1 <0.2 <0.2 230 0.303 <5 <0.3 0.457 0.04 0.038 P-101 05/19/2015 Anoxic <1 <1 14 2280 2320 <0.05 <0.05 <10 <1 <1 2.2 4.18 <0.01 2.24 <1 <1 14.3 0.356 0.362 160 <0.5 <0.2 <0.2 260 0.268 <5 <0.3 <0.3 0.033 0.027 P-103 05/20/2015 Mixed(anoxic) <1 <1 6.49 8200 7410 <0.05 <0.05 <10 <1 <1 7.66 10.1 0.02 4.71 <1 <1 5.8 0.025 0.025 50 <0.5 <0.2 <0.2 120 0.565 <5 <0.3 0.488 0.097 0.076 P-104 05/19/2015 Mixed(oxic-anoxic) <1 <1 8.52 1120 1150 <0.05 <0.05 <10 <1 <1 2.66 3.56 4.7 1.46 2.08 1.37 6.04 0.095 0.088 41 <0.1 <0.2 <0.2 140 0.17 8 <0.3 0.559 0.079 0.068 P-105 05/13/2015 Mixed(oxic-anoxic) <1 <1 2.95 110 120 <0.05 <0.05 <10 <1 <1 1.99 5.01 1.4 0.919 <1 <1 2.58 0.026 0.026 3.1 <0.5 <0.2 <0.2 44 0.145 26 <0.3 0.584 0.044 0.047 PZ-19 05/20/2015 NA <1 10.2 NA 272 NA <0.05 NA NA <1 NA 5.63 1.6 8.43 NA <1 16.9 NA 0.565 170 NA NA 0.252 NA 0.331 NA NA 0.99 NA 0.014 PZ-22 05/18/2015 Mixed(oxic-anoxic) <1 <1 9.74 2190 2230 <0.05 <0.05 <10 <1 <1 1.26 1.29 0.419 7.77 <1 <1 17.2 0.8 0.826 200 <0.2 <0.2 <0.2 290 0.432 <5 <0.3 <0.3 0.027 0.027 PZ-23 05/18/2015 Mixed(anoxic) <1 <1 3.68 3680 3640 <0.05 <0.05 29 <1 <1 <1 1.43 0.771 2.15 <1 <1 16.5 0.111 0.112 62 <0.1 <0.2 <0.2 120 0.301 <5 <0.3 0.389 0.018 0.014 PZ-24 05/19/2015 Mixed(oxic-anoxic) <1 <1 8.45 1950 2000 <0.05 <0.05 14000 <1 <1 <1 3.56 0.027 6.78 <1 <1 5.24 0.199 0.202 <0.1 <0.1 <0.2 <0.2 260 9 44 1.41 4.25 0.028 0.006 PZ-26 05/19/2015 Oxic <1 <1 2.33 28 34 <0.05 0.13 <10 <1 <1 <1 <1 2 0.781 <1 <1 2 0.009 0.009 0.13 <0.1 <0.2 <0.2 <25 0.193 <5 <0.3 <0.3 0.019 0.015 ABMW-04D 03/31/2015 Anoxic <1 <1 12.9 5840 6070 <0.05 <0.05 44 1.15 1.22 2.41 2.5 <0.01 2.1 <1 <1 5.59 0.209 0.214 100 <0.1 <0.2 <0.2 240 0.618 5 <0.3 0.789 0.022 0.021 ABMW-04D 05/26/2015 Anoxic <1 <1 13.9 5790 5820 <0.05 <0.05 <10 1.16 1.01 2.2 2.25 0.016 1.95 <1 <1 5.19 0.18 0.176 110 <0.1 <0.2 0.319 250 0.549 6 <0.3 0.564 0.024 0.022 ABMW-04D DUP 05/26/2015 Anoxic <1 <1 13.9 5790 5790 <0.05 <0.05 11 <1 1.08 2.05 2.31 0.037 1.95 <1 <1 5.26 0.175 0.179 110 <0.1 0.205 0.291 240 0.548 <5 <0.3 0.451 0.017 0.026 ABMW-05D 04/12/2015 Mixed(anoxic) <1 <1 11.1 555 517 <0.05 <0.05 160 1.04 1.34 1.44 1.14 <0.01 4.8 <1 <1 10 0.117 0.114 15 <2 <0.2 <0.2 200 0.923 10 <0.3 <0.3 0.007 <0.005 ABMW-05D 05/26/2015 Anoxic <1 <1 10.4 357 369 <0.05 <0.05 210 <1 <1 <1 <1 0.025 2.27 <1 <1 8.01 0.11 0.108 16 <0.5 <0.2 <0.2 170 0.715 6 <0.3 <0.3 0.029 0.032 AMW-02A 05/19/2015 Mixed(oxic-anoxic) <1 <1 5.68 2870 2950 <0.05 <0.05 790 <1 <1 1.87 1.35 0.04 2.96 <1 <1 13.9 0.236 0.236 65 <0.5 <0.2 <0.2 190 1.1 <5 <0.3 <0.3 <0.005 <0.005 CB-01D 04/28/2015 Mixed(oxic-anoxic) <1 <1 1.11 231 226 <0.05 <0.05 <10 1.49 1.38 1.66 6.03 0.036 1.8 <1 <1 5.63 0.026 0.025 2.7 <0.2 <0.2 <0.2 44 0.487 7 <0.3 0.416 0.026 0.024 CB-01D 05/21/2015 Mixed(oxic-anoxic) <1 <1 1.12 308 286 <0.05 <0.05 <10 <1 <1 1.44 2.07 0.038 1.54 <1 <1 3.89 0.019 0.019 2.2 <0.1 <0.2 <0.2 37 0.518 <5 <0.3 0.34 0.021 0.02 CB-03 05/19/2015 Anoxic <1 <1 6.4 317 331 <0.05 0.1 100 5.21 5.49 <1 1.84 0.465 11.8 3.5 3.03 13.1 0.575 0.584 150 <0.5 0.497 0.398 240 0.273 14 <0.3 0.675 0.036 0.029 CB-03R 04/08/2015 NA <1 10.2 NA 510 NA <0.05 NA NA <1 NA 49 NA 6.29 NA <1 18.6 NA NA 180 NA NA <0.2 310 NA 38 NA NA NA 0.118 CB-03R 07/08/2015 Mixed(oxic-anoxic) <1 1.54 12 669 754 <0.05 <0.05 <10 <1 <1 50.4 52 25 8.8 <1 1.78 17.7 0.653 0.733 180 <0.5 0.211 0.257 420 1.1 25 <0.3 2.7 0.496 0.102 CB-08 04/07/2015 NA <1 38.5 NA 1120 NA 0.11 NA NA <1 NA <5 NA 2.74 NA 18.6 8.58 NA NA 120 NA NA <0.2 710 NA <5 NA NA NA 0.031 CB-08 DUP 04/07/2015 NA <1 38.1 NA 1110 NA 0.12 NA NA <1 NA <5 NA 2.71 NA 20.1 8.5 NA NA 120 NA NA <0.2 730 NA <5 NA NA NA 0.031 CB-08 07/06/2015 Mixed(oxic-anoxic) <1 <1 37.8 1090 1080 <0.05 0.13 <10 <1 <1 2.67 <5 1.7 2.63 19.2 19.5 8.06 0.659 0.655 140 <0.1 <0.2 <0.2 840 0.362 <5 <0.3 <0.3 0.126 0.112 CB-08 DUP 07/06/2015 Mixed(oxic-anoxic) NA <1 36.7 NA 1080 NA 0.12 NA NA <1 NA <5 1.8 2.64 NA 18.9 8.09 NA NA 140 NA NA <0.2 860 NA <5 NA <0.3 NA 0.105 GW-01 04/07/2015 NA <1 6.66 NA 507 NA 0.16 NA NA <1 NA <5 NA 0.676 NA 1.6 1.09 NA NA 25 NA NA <0.2 83 NA <5 NA NA NA 0.01 GW-01 07/06/2015 Mixed(oxic-anoxic) <1 <1 7.58 564 551 <0.05 0.15 <10 <1 <1 2.28 <5 3 0.654 1.38 1.78 1.05 <0.005 <0.005 35 <0.1 <0.2 <0.2 78 0.56 <5 <0.3 <0.3 0.013 0.012 GW-01D 05/07/2015 Mixed(anoxic) <1 <1 2.38 347 369 <0.05 <0.05 <10 <1 <1 2.34 2.5 0.524 1.51 <1 <1 2.73 0.031 0.033 2.3 <0.1 <0.2 <0.2 35 0.311 6 <0.3 0.451 0.016 0.016 Analytical Parameter Redox Assignment Methane Sulfide Analytical Results Total Dissolved Solids Total Organic Carbon Total Suspended Solids Nitrate (as N)Sulfate Tr a n s i t i on Z o n e Reporting Units 15A NCAC 02L Standard Al l u v i a l Sa p r o l i t e P:\Duke Energy Progress.1026\102. Asheville Ash Basin GW Assessment Plan\1.11 CSA Reporting\tables\Table 10-3 Groundwater Analytical Results Page 3 of 4 TABLE 10-3 GROUNDWATER ANALYTICAL RESULTS ASHEVILLE STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, ARDEN, NC Lead Lead Magnesium Manganese Manganese Mercury Mercury Molybdenum Molybdenum Nickel Nickel Potassium Selenium Selenium Sodium Strontium Strontium Thallium Thallium Vanadium Vanadium Zinc Zinc DIS TOT TOT DIS TOT DIS TOT DIS TOT DIS TOT TOT DIS TOT TOT DIS TOT DIS TOT DIS TOT DIS TOT Unknown ug/l ug/l mg/l ug/l ug/l ug/l 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 NE 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 Collection Date Analytical Parameter Redox Assignment Methane Sulfide Analytical Results Total Dissolved Solids Total Organic Carbon Total Suspended Solids Nitrate (as N)Sulfate Reporting Units 15A NCAC 02L Standard GW-01D 05/28/2015 Mixed(anoxic) <1 <1 2.41 239 240 <0.05 0.14 <10 <1 <1 1.19 1.44 0.542 1.31 <1 <1 2.52 0.028 0.029 2.9 <0.1 <0.2 <0.2 41 0.311 11 <0.3 <0.3 0.01 0.017 GW-04 05/18/2015 Mixed(oxic-anoxic) <1 <1 16.8 174 185 <0.05 <0.05 <10 <1 <1 10.9 10.9 0.599 2.04 <1 <1 15.1 0.157 0.17 150 <0.5 <0.2 <0.2 260 0.273 <5 <0.3 0.328 0.029 <0.005 MW-01D 05/11/2015 Mixed(oxic-anoxic) <1 <1 2.48 263 248 <0.05 <0.05 15 <1 <1 8 7.67 1.4 1.37 <1 <1 3.46 0.032 0.031 5.9 <0.1 <0.2 <0.2 47 0.316 <5 <0.3 <0.3 0.008 0.008 MW-01D 05/21/2015 Mixed(oxic-anoxic) <1 <1 2.45 188 221 <0.05 <0.05 <10 <1 <1 5.39 4.78 1.2 1.49 <1 <1 3.32 0.036 0.031 5.3 <0.1 <0.2 <0.2 41 0.263 <5 <0.3 <0.3 0.026 0.024 MW-03D 05/07/2015 Mixed(oxic-anoxic) <1 <1 7.15 490 633 <0.05 <0.05 11 1.06 4.61 30 135 0.039 4.19 <1 <1 20.5 0.252 0.265 140 <0.1 <0.2 <0.2 250 0.574 11 <0.3 1.75 0.076 0.081 MW-03D 05/21/2015 Anoxic <1 <1 7.28 608 560 <0.05 <0.05 <10 <1 <1 <1 3.89 0.029 4.32 <1 <1 20.6 0.248 0.25 140 <0.1 <0.2 <0.2 270 0.837 70 <0.3 <0.3 0.054 0.047 MW-04D 04/28/2015 Mixed(oxic-anoxic) <1 <1 1.57 228 204 <0.05 <0.05 <10 <1 <1 1.43 1.48 1.7 1.15 <1 <1 2.6 0.03 0.031 1.8 <0.2 <0.2 <0.2 35 0.152 8 <0.3 0.379 0.008 <0.005 MW-04D 05/21/2015 Mixed(oxic-anoxic) <1 <1 1.5 100 87 <0.05 <0.05 <10 <1 <1 1.12 1.07 1.6 1.04 <1 <1 2.49 0.028 0.027 1.5 <0.1 <0.2 <0.2 33 0.138 <5 <0.3 <0.3 0.006 <0.005 MW-05D 05/07/2015 Mixed(oxic-anoxic) <1 <1 7.6 565 557 <0.05 <0.05 <10 <1 <1 36.9 29.5 1.5 2.73 3.36 3.41 24.8 0.251 0.252 150 <0.1 <0.2 <0.2 250 0.249 <5 <0.3 <0.3 0.025 0.02 MW-05D DUP 05/07/2015 Mixed(oxic-anoxic) <1 <1 7.56 570 569 <0.05 <0.05 12 <1 <1 37 33 1.5 2.77 3.45 3 24.5 0.25 0.254 160 <0.1 <0.2 <0.2 250 0.207 <5 <0.3 <0.3 0.02 0.02 MW-05D 05/27/2015 Mixed(oxic-anoxic) <1 <1 7.61 459 456 <0.05 <0.05 <10 <1 <1 27.3 26.1 1 2.79 2.1 2 22.7 0.265 0.267 190 <0.1 <0.2 <0.2 250 0.279 <5 <0.3 <0.3 0.064 0.063 MW-06D 04/15/2015 Anoxic <1 <1 11.2 4720 5280 <0.05 <0.05 74 1.06 <1 1.44 1.47 <0.01 2.2 <1 <1 9.7 0.344 0.337 140 <0.1 <0.2 0.236 280 0.367 31 <0.3 0.363 0.008 0.009 MW-06D 05/21/2015 Anoxic <1 <1 10.6 4580 4480 <0.05 <0.05 57 <1 <1 1.11 1.13 0.021 1.65 <1 <1 8.95 0.306 0.302 150 <0.1 0.221 <0.2 260 0.304 <5 <0.3 <0.3 0.008 0.006 MW-09D 05/04/2015 Mixed(oxic-anoxic) <1 <1 79.4 3690 3670 <0.05 <0.05 <10 2.04 2.16 14.3 14.9 0.439 7.84 32.9 32.2 22.4 1.74 1.76 250 <0.1 <0.2 0.327 1700 0.658 6 <0.3 0.516 0.082 0.08 MW-09D 05/21/2015 Mixed(anoxic) <1 <1 81.9 4010 3730 <0.05 <0.05 <10 2.82 2.19 8.33 10.4 0.083 7.31 19.6 14.8 31 1.98 1.89 270 <0.5 <0.2 <0.2 1700 0.548 <5 <0.3 <0.3 0.084 0.084 MW-11D 02/12/2015 Mixed(oxic-anoxic) <1 <1 16.5 551 503 <0.05 <0.05 <10 <1 <1 3.51 3.7 2.3 5.41 <1 <1 33 0.385 0.383 22 <0.1 <0.2 <0.2 350 0.905 <5 0.421 1.21 0.016 0.018 MW-11D 05/20/2015 Mixed(oxic-anoxic) <1 <1 16.5 154 159 <0.05 <0.05 <10 <1 <1 1.18 1.11 2.4 3.9 <1 <1 35.8 0.33 0.333 18 <0.1 <0.2 <0.2 380 0.444 <5 <0.3 <0.3 0.013 0.007 MW-12D 03/31/2015 Mixed(oxic-anoxic) <1 <1 2.45 463 480 <0.05 <0.05 <10 1.88 2.09 4.66 5.9 1.4 1.37 <1 <1 7.66 0.027 0.024 7.2 <0.1 <0.2 <0.2 56 0.615 5 <0.3 0.388 0.043 0.037 MW-12D 05/21/2015 Mixed(oxic-anoxic) <1 <1 2.44 157 155 <0.05 <0.05 <10 <1 <1 1.23 1.27 1.4 0.969 <1 <1 4.8 0.021 0.02 7.3 <0.1 <0.2 0.674 50 0.211 5 <0.3 <0.3 0.033 0.029 MW-13D 02/12/2015 Mixed(oxic-anoxic) <1 <1 2.78 556 563 <0.05 <0.05 <10 2.65 3.04 <1 1.05 0.236 3.96 <1 <1 4.62 0.076 0.092 4 <0.1 <0.2 <0.2 110 0.478 <5 0.78 1.67 <0.005 0.006 MW-13D 05/20/2015 Mixed(oxic-anoxic) <1 <1 2.3 1200 1300 <0.05 <0.05 <10 3.84 3.4 1.07 1.08 0.126 3.71 <1 <1 5.17 0.112 0.114 1.9 <0.1 <0.2 <0.2 93 0.752 <5 <0.3 0.503 0.012 0.008 MW-15D 03/04/2015 Mixed(oxic-anoxic) <1 <1 2.41 196 167 <0.05 <0.05 <10 <1 <1 1.06 <1 0.666 2.89 <1 <1 6.94 0.112 0.108 0.67 <0.1 <0.2 <0.2 76 0.41 <5 <0.3 0.333 0.026 0.009 MW-15D 05/20/2015 Mixed(oxic-anoxic) <1 <1 2.18 80 87 <0.05 <0.05 <10 <1 <1 <1 <1 0.787 2.45 <1 <1 6.49 0.105 0.099 0.29 <0.1 <0.2 <0.2 72 0.209 <5 <0.3 0.502 0.009 <0.005 MW-18D 05/04/2015 Mixed(oxic-anoxic) <1 <1 25.8 1810 1510 <0.05 <0.05 <10 1.5 1.45 3.03 2.87 0.102 8.86 <1 <1 15.2 0.316 0.321 260 <0.1 <0.2 <0.2 620 0.697 <5 <0.3 0.523 0.016 0.006 MW-18D 05/28/2015 Mixed(oxic-anoxic) <1 <1 27.6 2890 2870 <0.05 <0.05 14 1.4 1.4 1.67 1.89 0.077 8.62 <1 <1 12.9 0.297 0.298 280 0.2 <0.2 <0.2 650 1.3 <5 <0.3 <0.3 <0.005 <0.005 MW-21D 06/30/2015 Mixed(oxic-anoxic) <1 <1 5.31 4680 4560 <0.05 <0.05 <10 4.76 5.42 1.35 1.25 0.199 8.66 1.11 1.19 18.5 0.094 0.095 31 <0.1 <0.2 <0.2 170 0.56 6 <0.3 <0.3 0.06 0.009 MW-22D 06/30/2015 Mixed(oxic-anoxic) <1 <1 4.07 129 132 <0.05 <0.05 <10 <1 <1 6.19 6.1 0.286 1.83 <1 <1 10.8 0.044 0.044 11 <0.1 <0.2 <0.2 90 0.338 5 <0.3 <0.3 <0.005 <0.005 MW-23DL 06/30/2015 Anoxic <1 <1 3.52 71 76 <0.05 <0.05 <10 3.66 3.59 <1 <1 <0.01 5.18 <1 <1 9.41 0.118 0.119 22 <0.1 <0.2 <0.2 160 0.908 23 <0.3 <0.3 0.008 0.134 MW-23DU 06/24/2015 Mixed(oxic-anoxic) <1 <1 3.56 850 865 <0.05 <0.05 <10 <1 <1 2.86 2.76 0.435 3.3 <1 <1 11 0.048 0.048 26 <0.1 <0.2 <0.2 84 0.672 <5 <0.3 <0.3 0.01 <0.005 PZ-16 05/18/2015 Oxic <1 <1 10.5 <5 83 <0.05 <0.05 <10 <1 <1 <1 5.35 2.1 1.97 27.1 27 9.48 0.236 0.237 110 <0.1 <0.2 <0.2 210 0.374 25 <0.3 1.29 0.08 0.048 ABMW-05BR 04/13/2015 Mixed(oxic-anoxic) <1 <1 6.87 121 128 <0.05 <0.05 52 <1 <1 <1 <1 <0.01 3.06 <1 <1 7.12 0.11 0.115 17 <2 <0.2 <0.2 160 0.528 17 <0.3 <0.3 0.008 0.006 ABMW-05BR 05/27/2015 Anoxic <1 <1 6.01 149 157 <0.05 <0.05 68 5.61 4.21 <1 <1 0.028 7.93 <1 <1 18.3 0.192 0.21 19 <0.5 <0.2 <0.2 180 1.5 27 <0.3 <0.3 0.008 0.017 AMW-01B 05/19/2015 Anoxic <1 <1 2.74 373 362 <0.05 <0.05 NA 2.45 2.55 <1 <1 0.015 2.57 <1 <1 22.1 0.083 0.085 120 <0.1 <0.2 <0.2 280 0.558 6 <0.3 <0.3 0.014 0.006 AMW-03B 05/12/2015 Oxic <1 <1 1.86 5 <5 <0.05 <0.05 <10 <1 <1 1.75 1.77 0.075 2.06 <1 <1 6.07 0.059 0.06 3.3 <0.1 <0.2 <0.2 72 1.4 8 <0.3 0.344 0.097 <0.005 CB-04B 04/08/2015 NA <1 4.29 NA 43 NA <0.05 NA NA 5.39 NA <5 NA 5.38 NA <1 16.4 NA NA 62 NA NA <0.2 180 NA <5 NA NA NA <0.005 CB-04B 07/07/2015 Oxic <1 <1 4.63 34 41 <0.05 <0.05 <10 7.78 6.65 2.06 <5 0.03 6 <1 <1 19 0.141 0.144 70 <0.1 <0.2 <0.2 170 0.428 <5 0.421 0.699 0.113 0.006 CB-08BR 05/11/2015 Mixed(oxic-anoxic) <1 <1 7.01 591 633 <0.05 <0.05 <10 1.26 1.29 1.83 4.36 0.362 5.11 3.13 3.93 8.79 0.228 0.251 34 <0.1 <0.2 <0.2 290 0.284 <5 <0.3 0.678 0.032 0.03 CB-08BR 05/22/2015 Mixed(oxic-anoxic) <1 <1 5.27 465 473 <0.05 <0.05 <10 1.3 1.3 <1 <1 0.096 4.07 1.18 1.4 7.74 0.172 0.178 31 <0.1 <0.2 <0.2 210 0.226 5 <0.3 0.437 0.027 0.015 CB-09 BR 04/27/2015 Suboxic <1 <1 2.53 12 21 <0.05 <0.05 <10 7.01 7.4 <1 4.42 0.065 4.23 1.44 1.56 8.39 0.11 0.115 3.9 <0.2 <0.2 <0.2 130 0.308 25 2.01 3.03 0.017 0.008 CB-09BR 05/28/2015 Mixed(anoxic) <1 <1 3.2 65 76 <0.05 <0.05 <10 1.14 1.17 <1 1.36 0.069 3.41 <1 <1 4.76 0.088 0.098 1.8 <0.1 <0.2 <0.2 96 0.204 8 <0.3 0.499 0.011 0.021 GW-01BR 05/14/2015 Mixed(oxic-anoxic) <1 <1 3.46 89 93 <0.05 <0.05 <10 <1 <1 <1 <1 <0.01 2.36 <1 <1 6.02 0.082 0.084 8.5 <0.1 <0.2 <0.2 110 0.221 <5 <0.3 0.575 <0.005 <0.005 GW-01BR 05/27/2015 Mixed(oxic-anoxic) <1 <1 3.52 63 66 <0.05 <0.05 NA 1.34 1.28 <1 <1 0.019 3.33 <1 <1 6.25 0.091 0.088 8.3 <0.1 <0.2 <0.2 110 0.401 <5 0.969 1.08 0.013 0.009 GW-02 05/14/2015 Mixed(oxic-anoxic) <1 <1 34.6 1850 1780 <0.05 0.05 <10 <1 <1 7.28 7.55 0.63 3.94 <1 1.01 6.92 0.546 0.556 85 <0.1 <0.2 <0.2 720 0.357 <5 <0.3 <0.3 0.261 0.043 MW-01BR 05/11/2015 Mixed(oxic-anoxic) <1 <1 2.76 67 64 <0.05 <0.05 <10 <1 <1 <1 <1 <0.01 3.57 <1 <1 9.19 0.076 0.078 7.8 <0.1 <0.2 <0.2 110 0.228 7 <0.3 <0.3 0.005 <0.005 MW-01BR 05/21/2015 Mixed(oxic-anoxic) <1 <1 3.1 74 77 <0.05 <0.05 <10 <1 <1 <1 <1 <0.01 4.05 <1 <1 6.83 0.078 0.075 8.2 <0.2 <0.2 <0.2 110 0.22 <5 <0.3 0.322 <0.005 <0.005 MW-02BR 04/13/2015 Suboxic <1 <1 0.769 27 25 <0.05 <0.05 150 8.76 9.39 <1 1.36 <0.01 3.43 <1 <1 16.5 0.083 0.079 59 <0.5 <0.2 <0.2 200 0.737 <5 <0.3 0.372 0.022 0.023 MW-02BR 05/21/2015 Suboxic <1 <1 0.689 27 25 <0.05 <0.05 100 9.7 9.45 <1 <1 <0.01 3.41 <1 <1 16.8 0.079 0.075 56 <0.1 <0.2 <0.2 180 0.878 <5 <0.3 0.373 0.008 <0.005 MW-05BR 05/04/2015 Anoxic <1 <1 5.02 148 172 <0.05 <0.05 <10 <1 <1 <1 <1 <0.01 3.76 <1 <1 15.5 0.31 0.318 120 <0.1 <0.2 <0.2 250 0.399 40 <0.3 0.368 <0.005 <0.005 MW-05BR 05/28/2015 Anoxic <1 <1 6.13 254 244 <0.05 <0.05 32 1.05 1.21 <1 <1 0.027 3.72 <1 <1 18.1 0.329 0.328 140 <0.1 <0.2 0.287 260 0.239 29 <0.3 <0.3 <0.005 0.005 MW-09BR 05/04/2015 Mixed(oxic-anoxic) <1 <1 17.1 230 247 <0.05 <0.05 <10 4.22 4.17 <1 <1 <0.01 16.8 <1 <1 24.7 0.676 0.697 86 <0.5 <0.2 <0.2 760 1.1 <5 <0.3 0.379 0.099 0.101 MW-09BR 05/21/2015 Mixed(oxic-anoxic) <1 <1 19.5 243 317 <0.05 <0.05 <10 3.47 2.48 <1 <1 <0.01 17.8 <1 <1 24.6 0.788 0.746 87 <0.1 <0.2 <0.2 860 0.827 <5 <0.3 <0.3 0.051 0.028 MW-13BR 03/03/2015 Mixed(oxic-anoxic) <1 <1 2.24 250 268 <0.05 <0.05 <10 <1 <1 1.05 1.31 0.244 1.48 <1 <1 2.64 0.028 0.031 2.1 <0.5 0.211 <0.2 67 0.43 7 0.459 0.879 0.009 0.009 MW-13BR DUP 03/03/2015 Mixed(oxic-anoxic) <1 <1 2.25 249 269 <0.05 <0.05 12 <1 <1 1.09 1.05 0.248 1.48 <1 <1 2.68 0.029 0.03 2 <0.1 <0.2 <0.2 58 0.411 <5 0.449 0.82 0.01 0.009 MW-13BR 05/20/2015 Mixed(oxic-anoxic) <1 <1 1.92 100 105 <0.05 <0.05 <10 <1 <1 <1 <1 0.343 1.07 <1 <1 2.23 0.018 0.018 1.6 <0.1 <0.2 <0.2 34 0.169 <5 <0.3 <0.3 0.014 0.033 MW-14BR 02/13/2015 Mixed(oxic-anoxic) <1 <1 14.8 220 216 <0.05 <0.05 <10 5.69 5.88 <1 <1 0.822 6.33 18.2 16.5 13.6 0.295 0.295 160 <0.1 <0.2 <0.2 350 0.94 <5 <0.3 0.528 <0.005 <0.005 MW-14BR 05/20/2015 Oxic <1 <1 14.7 17 31 <0.05 <0.05 <10 3.83 3.74 <1 <1 0.903 7.03 13.1 13.8 9.86 0.297 0.307 170 <0.1 <0.2 <0.2 390 0.815 <5 <0.3 <0.3 <0.005 <0.005 MW-16BR 03/11/2015 Anoxic <1 <1 4.69 84 852 <0.05 <0.05 17 2.55 2.9 <1 <1 <0.01 5.27 <1 <1 21.8 0.028 0.29 31 <0.5 <0.2 <0.2 290 9 15 <0.3 <0.3 0.005 0.014 MW-16BR 05/28/2015 Anoxic <1 <1 4.67 723 715 <0.05 <0.05 17 <1 <1 <1 <1 0.024 3.48 <1 <1 19.5 0.268 0.266 36 0.299 <0.2 <0.2 310 0.7 10 <0.3 <0.3 0.011 0.01 MW-18BR 05/04/2015 Mixed(oxic-anoxic) <1 <1 24.4 224 227 <0.05 <0.05 <10 <1 <1 4.33 4.16 0.261 9.1 1.45 1.4 15.5 0.434 0.443 260 <0.1 <0.2 <0.2 660 0.373 <5 <0.3 0.554 0.018 0.008 MW-18BR 05/28/2015 Mixed(oxic-anoxic) <1 <1 27.8 324 313 <0.05 <0.05 <10 <1 <1 4.86 4.67 0.124 9.14 <1 <1 15.2 0.418 0.415 290 <0.1 <0.2 <0.2 660 0.323 <5 <0.3 <0.3 0.006 0.008 MW-22BR 06/30/2015 Mixed(oxic-anoxic) <1 <1 4.08 309 324 <0.05 <0.05 <10 2.59 2.8 <1 <1 <0.01 10.4 <1 <1 16 0.113 0.121 25 <0.5 <0.2 <0.2 170 0.727 13 <0.3 <0.3 0.102 0.011 PZ-17D 05/15/2015 Mixed(oxic-anoxic) <1 <1 9.67 36 48 <0.05 <0.05 <10 <1 <1 6.95 11.2 0.298 8.03 23.6 22.2 11.1 0.307 0.315 140 <0.1 <0.2 <0.2 320 0.314 7 <0.3 <0.3 0.051 0.047 PZ-17S 05/15/2015 Oxic <1 <1 0.993 24 24 <0.05 <0.05 <10 <1 <1 1.45 1.61 0.443 2.83 10.4 11 2.74 0.119 0.122 19 <0.1 <0.2 <0.2 44 0.269 <5 <0.3 <0.3 0.019 0.006 Prepared by: BER/SRW Checked by: KLS Notes: - Bold highlighted concentration indicates exceedance of the 15A NCAC 02L Standard, Appendix 2, April 1, 2013. ORP = Oxidation Reduction Potential NE = Not established mV = millivolts DIS = Dissolved NTU = nephelometric turbidity unit TOT = Total S.U. = Standard Unit Temp = Temperature ug/l = microgram per liter DO = Dissolved Oxygen umhos/cm = micro mhos per centimeter Deg C = Degree Celsius Spec Cond = Specific Conductance mg/l = milligrams per liter NM = Not Measured mg-N/L = miligram nitrogen per liter DUP = Duplicate Qualitative Redox State derived using USGS Excel® Workbook for Identifying Redox Processes in ground water. < = concentration not detected at or above the reporting limit. * - Interim Maximum Allowable Concentrations (IMACs) of the 15A NCAC 02L Standard, Appendix 1, April, 1, 2013. NA = Not analyzed for March/June 2015 NPDES Compliance Sampling Event Be d r o c k Tr a n s i t i on Z o n e P:\Duke Energy Progress.1026\102. Asheville Ash Basin GW Assessment Plan\1.11 CSA Reporting\tables\Table 10-3 Groundwater Analytical Results Page 4 of 4 TABLE 10-4 15A NCAC 2L STANDARD EXCEEDANCES IN GROUNDWATER ASHEVILLE STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, ARDEN, NC pH Antimony Arsenic Beryllium Boron Cadmium Chloride Chromium Cobalt Iron Manganese Nickel Nitrate (as N)Selenium Sulfate Thallium Total Dissolved Solids Vanadium S.U. ug/l ug/l ug/l ug/l ug/l mg/l ug/l ug/l ug/l ug/l ug/l mg-N/L ug/l mg/l ug/l mg/l ug/l 6.5-8.5 1 * 10 4 * 700 2 250 10 1 * 300 50 100 10 20 250 0.2 * 500 0.3 * Sample ID Sample Collection Date CB-05 04/06/2015 BE BE BE BE BE BE BE BE BE 19600 594 BE BE BE BE 0.239 BE BE CB-05 07/09/2015 6 BE BE BE BE BE BE BE BE 25400 488 BE BE BE BE BE BE 0.855 CB-06 04/06/2015 6 BE BE BE BE BE BE BE 1.42 14600 3330 BE BE BE BE BE BE BE CB-06 07/08/2015 5.9 BE BE BE 807 BE BE BE 2.21 22000 3950 BE BE BE BE BE 520 BE CB-07 04/06/2015 5.9 BE BE BE BE BE BE BE BE BE BE BE BE 21.3 BE BE BE BE CB-07 07/08/2015 5.8 BE BE BE BE BE BE BE BE BE BE BE BE BE BE BE BE 0.574 MW-10 05/12/2015 5 BE BE BE BE BE BE BE 4.29 369 340 BE BE BE BE BE BE BE MW-11 05/20/2015 5 BE BE BE BE BE BE BE 2.14 BE 407 BE BE BE BE BE BE BE MW-15A 03/04/2015 5.4 BE BE BE BE BE BE BE 1.25 879 1060 BE BE BE BE BE BE BE MW-15A 05/20/2015 4.9 BE BE BE BE BE BE BE BE BE 840 BE BE BE BE BE BE BE MW-16A 03/11/2015 5.3 BE BE BE BE BE BE BE 1.01 522 1980 BE BE BE BE BE BE BE MW-16A DUP 03/11/2015 5.3 BE BE BE BE BE BE BE 1.1 538 2000 BE BE BE BE BE BE BE MW-16A 05/28/2015 5 BE BE BE BE BE BE BE 1.35 BE 1940 BE BE BE BE BE BE BE MW-17A 03/03/2015 6.3 BE BE BE 1060 BE 330 BE 26.3 8970 12800 BE BE BE BE BE 1300 0.401 MW-17A 05/21/2015 6.2 BE BE BE 1540 BE 390 BE 25.8 40600 11900 BE BE BE BE BE 1200 2.63 MW-20A 06/24/2015 6.02 BE BE BE BE 2.01 BE BE 16.4 16300 15800 BE BE BE BE BE BE 0.328 ABMW-02S 03/17/2015 4.2 BE 11.2 11 760 2.96 BE BE 569 1120 17500 233 BE BE 610 0.369 640 BE ABMW-02S 05/27/2015 4.1 BE 16 12.5 751 3.3 BE BE 578 557 16200 247 BE BE 730 0.333 670 0.666 ABMW-02S DUP 05/27/2015 4.1 BE 16 12.6 761 3.24 BE BE 576 453 16500 245 BE BE 720 0.329 660 0.421 ABMW-05S 04/13/2015 5.9 BE BE BE BE BE BE BE 14.3 BE 395 BE BE BE BE BE BE BE ABMW-05S 05/26/2015 5.8 BE BE BE BE BE BE BE 16.7 4800 537 BE BE BE BE 0.309 BE BE ABMW-07S 04/12/2015 BE BE BE BE BE BE BE BE 6.12 BE 798 BE BE BE BE 0.311 BE 0.76 ABMW-07S 05/27/2015 6.3 BE BE BE 789 BE BE BE 3.5 BE 763 BE BE BE BE 0.664 BE BE AMW-03A 05/12/2015 12.1 BE BE BE BE BE BE BE BE BE BE BE BE BE BE BE BE 8.98 APD-07 05/13/2015 5.5 BE BE BE BE BE BE BE BE BE BE BE BE BE BE BE BE BE CB-01 04/07/2015 4.9 BE BE BE BE BE BE BE 1.94 BE BE BE BE BE BE BE BE BE CB-01 07/06/2015 4.7 BE BE BE BE BE BE BE 1.95 BE BE BE BE BE BE BE BE BE CB-02 04/07/2015 5.4 BE BE BE BE BE BE BE 4.26 319 3030 BE BE BE BE BE BE BE CB-02 07/07/2015 5.3 BE BE BE BE BE BE BE 4.17 BE 3000 BE BE BE BE BE BE BE CB-04 04/08/2015 5.1 BE BE BE BE BE BE BE 1.63 BE 747 BE BE BE BE BE BE BE CB-04 07/08/2015 5.2 BE BE BE BE BE BE BE 5.41 3340 920 BE BE BE BE BE BE 4.68 CB-09 04/07/2015 5 BE BE BE BE BE BE BE 1.36 653 BE BE BE BE BE BE BE BE CB-09 07/06/2015 4.9 BE BE BE BE BE BE BE BE BE BE BE BE BE BE BE BE BE CB-09SL 04/27/2015 6 BE BE BE BE BE BE BE 1.21 475 125 BE BE BE BE BE BE 0.56 CB-09SL 05/28/2015 5.8 BE BE BE BE BE BE BE BE BE 71 BE BE BE BE BE BE BE DP-01 05/13/2015 BE BE 1180 BE BE BE BE BE 20.7 8770 1570 BE BE BE BE BE BE 3.12 GW-03 05/14/2015 5.6 BE BE BE 1170 BE BE BE 17.2 485 555 BE BE BE BE BE BE 0.301 MW-06S 04/15/2015 5.5 BE BE BE 1090 BE BE BE 15.6 645 10000 BE BE BE BE BE BE 0.543 MW-06S 05/21/2015 5.3 BE BE BE 1050 BE BE BE 6.17 BE 9970 BE BE BE BE BE BE BE MW-08S 03/06/2015 6 BE BE BE 5030 BE 450 BE 7.73 BE 2850 BE BE BE 260 BE 1500 0.342 MW-08S 05/27/2015 5.9 BE BE BE 5330 BE 450 BE 3.09 BE 2830 BE BE BE 290 BE 1900 BE MW-09S 04/27/2015 5.5 BE BE BE 4730 BE 560 BE 15.8 BE 4290 BE BE 36.6 BE 0.294 1700 BE MW-09S 05/21/2015 5.5 BE BE BE 4800 BE 570 BE 5.9 BE 3630 BE BE 40.6 270 BE 1700 BE MW-24S 05/11/2015 5 BE BE BE BE BE BE BE 2.05 304 170 BE BE BE BE BE BE BE MW-24S 06/01/2015 5.2 BE BE BE BE BE BE BE 1.02 BE 136 BE BE BE BE BE BE BE P-100 05/19/2015 5.4 BE BE BE 732 BE BE 12.7 35.9 545 3380 BE BE BE BE BE BE 0.457 P-101 05/19/2015 5.7 BE BE BE 1200 BE BE BE 14.3 BE 2320 BE BE BE BE BE BE BE P-103 05/20/2015 5.6 BE BE BE BE BE BE BE 20 724 7410 BE BE BE BE BE BE 0.488 P-104 05/19/2015 5.7 BE BE BE BE BE BE BE 26.8 737 1150 BE BE BE BE BE BE 0.559 P-105 05/13/2015 5 BE BE BE BE BE BE BE 3.97 422 120 BE BE BE BE BE BE 0.584 PZ-19 05/20/2015 5.7 2.16 BE BE 969 BE BE BE BE 471 272 BE BE BE BE 0.252 BE 0.99 PZ-22 05/18/2015 5.5 BE BE BE 1210 BE BE BE 6.95 2300 2230 BE BE BE BE BE BE BE PZ-23 05/18/2015 5.4 BE BE BE BE BE BE BE 22.4 358 3640 BE BE BE BE BE BE 0.389 PZ-24 05/19/2015 6 BE BE BE BE BE BE BE 4.35 69200 2000 BE BE BE BE BE BE 4.25 PZ-26 05/19/2015 4.8 BE BE BE BE BE BE BE 2.23 BE BE BE BE BE BE BE BE BE ABMW-04D 03/31/2015 6.1 BE BE BE 1050 BE BE BE 67.3 8370 6070 BE BE BE BE BE BE 0.789 ABMW-04D 05/26/2015 5.7 BE BE BE 1080 BE BE BE 54.2 6360 5820 BE BE BE BE 0.319 BE 0.564 ABMW-04D DUP 05/26/2015 5.7 BE BE BE 1080 BE BE BE 54.6 6290 5790 BE BE BE BE 0.291 BE 0.451 ABMW-05D 04/12/2015 6.2 BE BE BE BE BE BE BE 1.2 21100 517 BE BE BE BE BE BE BE ABMW-05D 05/26/2015 6.1 BE BE BE BE BE BE BE BE 19000 369 BE BE BE BE BE BE BE AMW-02A 05/19/2015 5.7 BE BE BE BE BE BE BE 21.2 16800 2950 BE BE BE BE BE BE BE CB-01D 04/28/2015 BE BE BE BE BE BE BE BE 2.54 528 226 BE BE BE BE BE BE 0.416 CB-01D 05/21/2015 6.4 BE BE BE BE BE BE BE 1.66 589 286 BE BE BE BE BE BE 0.34 CB-03 05/19/2015 5.8 BE BE BE 947 BE BE BE 1.88 844 331 BE BE BE BE 0.398 BE 0.675 CB-03R 04/08/2015 5 BE BE BE BE BE BE 20 17.1 6240 510 BE BE BE BE BE BE BE CB-03R 07/08/2015 4.5 BE BE BE 720 BE BE BE 29.9 2980 754 BE 25 BE BE 0.257 BE 2.7 CB-08 04/07/2015 5.1 BE BE BE 2350 BE BE BE 2.54 BE 1120 BE BE BE BE BE 710 BE CB-08 DUP 04/07/2015 5.1 BE BE BE 2330 BE BE BE 2.76 BE 1110 BE BE 20.1 BE BE 730 BE CB-08 07/06/2015 5.1 BE BE BE 2310 BE BE BE 2.68 BE 1080 BE BE BE BE BE 840 BE CB-08 DUP 07/06/2015 5.1 BE BE BE 2320 BE BE BE 2.71 BE 1080 BE BE BE BE BE 860 BE GW-01 04/07/2015 4.8 BE BE BE BE BE BE BE 4.71 BE 507 BE BE BE BE BE BE BE GW-01 07/06/2015 4.8 BE BE BE BE BE BE BE 4.76 BE 551 BE BE BE BE BE BE BE GW-01D 05/07/2015 5.4 BE BE BE BE BE BE BE 7.77 951 369 BE BE BE BE BE BE 0.451 GW-01D 05/28/2015 5.3 BE BE BE BE BE BE BE 4.02 BE 240 BE BE BE BE BE BE BE GW-04 05/18/2015 5.5 BE BE BE 994 BE BE BE BE BE 185 BE BE BE BE BE BE 0.328 MW-01D 05/11/2015 5.3 BE BE BE BE BE BE BE 15.4 BE 248 BE BE BE BE BE BE BE MW-01D 05/21/2015 5.5 BE BE BE BE BE BE BE 9.45 360 221 BE BE BE BE BE BE BE MW-03D 05/07/2015 6.3 BE BE BE BE BE BE 194 3.88 12000 633 135 BE BE BE BE BE 1.75 MW-03D 05/21/2015 6 BE BE BE BE BE BE BE BE 12700 560 BE BE BE BE BE BE BE MW-04D 04/28/2015 5.5 BE BE BE BE BE BE BE 12.2 582 204 BE BE BE BE BE BE 0.379 MW-04D 05/21/2015 5.1 BE BE BE BE BE BE BE 5.28 BE 87 BE BE BE BE BE BE BE MW-05D 05/07/2015 5.5 BE BE BE BE BE BE BE 48 10100 557 BE BE BE BE BE BE BE MW-05D DUP 05/07/2015 5.5 BE BE BE BE BE BE BE 49.9 9590 569 BE BE BE BE BE BE BE MW-05D 05/27/2015 4 BE BE BE BE BE BE BE 39.1 484 456 BE BE BE BE BE BE BE MW-06D 04/15/2015 5.8 BE BE BE 1750 BE BE BE 7.47 406 5280 BE BE BE BE 0.236 BE 0.363 MW-06D 05/21/2015 5.5 BE BE BE 1680 BE BE BE 3.85 BE 4480 BE BE BE BE BE BE BE MW-09D 05/04/2015 5.8 BE BE BE 4420 BE 500 BE 26.9 3300 3670 BE BE 32.2 BE 0.327 1700 0.516 MW-09D 05/21/2015 5.5 BE BE BE 4620 BE 470 BE 17.8 2170 3730 BE BE BE 270 BE 1700 BE MW-11D 02/12/2015 5.9 BE BE BE BE BE BE BE 4.21 1870 503 BE BE BE BE BE BE 1.21 MW-11D 05/20/2015 5.3 BE BE BE BE BE BE BE 1.11 BE 159 BE BE BE BE BE BE BE MW-12D 03/31/2015 5.5 BE BE BE BE BE BE BE 11 433 480 BE BE BE BE BE BE 0.388 MW-12D 05/21/2015 5.2 BE BE BE BE BE BE BE 2.15 BE 155 BE BE BE BE 0.674 BE BE MW-13D 02/12/2015 BE BE BE BE BE BE BE BE 4.11 515 563 BE BE BE BE BE BE 1.67 MW-13D 05/20/2015 BE BE BE BE BE BE BE BE 6.75 2780 1300 BE BE BE BE BE BE 0.503 MW-15D 03/04/2015 6.2 BE BE BE BE BE BE BE BE BE 167 BE BE BE BE BE BE 0.333 MW-15D 05/20/2015 5.7 BE BE BE BE BE BE BE BE BE 87 BE BE BE BE BE BE 0.502 MW-18D 05/04/2015 5.8 BE BE BE 807 BE BE BE 7.35 3530 1510 BE BE BE 260 BE 620 0.523 MW-18D 05/28/2015 6.1 BE BE BE 793 BE BE BE 4.61 6960 2870 BE BE BE 280 BE 650 BE MW-21D 06/30/2015 6.2 BE BE BE BE BE BE BE 1.66 4640 4560 BE BE BE BE BE BE BE MW-22D 06/30/2015 5.3 BE BE BE BE BE BE BE 2.5 BE 132 BE BE BE BE BE BE BE MW-23DL 06/30/2015 BE BE BE BE BE BE BE BE BE 11200 76 BE BE BE BE BE BE BE MW-23DU 06/24/2015 5.58 BE BE BE BE BE BE BE 36.9 BE 865 BE BE BE BE BE BE BE PZ-16 05/18/2015 5.8 BE BE BE BE BE BE 11.5 1.31 877 83 BE BE 27 BE BE BE 1.29 ABMW-05BR 04/13/2015 6.4 BE BE BE BE BE BE BE 1.45 17300 128 BE BE BE BE BE BE BE ABMW-05BR 05/27/2015 BE BE BE BE BE BE BE 10.5 4.21 11400 157 BE BE BE BE BE BE BE AMW-01B 05/19/2015 BE BE BE BE BE BE BE BE BE 6660 362 BE BE BE BE BE BE BE AMW-03B 05/12/2015 BE BE BE BE BE BE BE BE BE BE BE BE BE BE BE BE BE 0.344 CB-04B 04/08/2015 BE BE BE BE BE BE BE BE BE 625 BE BE BE BE BE BE BE BE CB-04B 07/07/2015 BE BE BE BE BE BE BE BE BE 315 BE BE BE BE BE BE BE 0.699 CB-08BR 05/11/2015 BE BE BE BE BE BE BE BE BE 311 633 BE BE BE BE BE BE 0.678 CB-08BR 05/22/2015 BE BE BE BE BE BE BE BE BE 601 473 BE BE BE BE BE BE 0.437 CB-09BR 04/27/2015 8.9 BE BE BE BE BE BE BE BE 460 BE BE BE BE BE BE BE 3.03 CB-09BR 05/28/2015 BE BE BE BE BE BE BE BE BE 402 76 BE BE BE BE BE BE 0.499 GW-01BR 05/14/2015 BE BE BE BE BE BE BE BE BE 1780 93 BE BE BE BE BE BE 0.575 GW-01BR 05/27/2015 BE BE BE BE BE BE BE BE BE 946 66 BE BE BE BE BE BE 1.08 GW-02 05/14/2015 5.5 BE BE BE 1050 BE BE BE 11.9 BE 1780 BE BE BE BE BE 720 BE MW-01BR 05/11/2015 BE BE BE BE BE BE BE BE BE 1370 64 BE BE BE BE BE BE BE MW-01BR 05/21/2015 BE BE BE BE BE BE BE BE BE 713 77 BE BE BE BE BE BE 0.322 MW-02BR 04/13/2015 9 BE BE BE BE BE BE BE BE BE BE BE BE BE BE BE BE 0.372 MW-02BR 05/21/2015 8.8 BE BE BE BE BE BE BE BE BE BE BE BE BE BE BE BE 0.373 MW-05BR 05/04/2015 BE BE BE BE BE BE BE BE BE 18800 172 BE BE BE BE BE BE 0.368 MW-05BR 05/28/2015 BE BE BE BE BE BE BE BE BE 27900 244 BE BE BE BE 0.287 BE BE MW-09BR 05/04/2015 BE BE BE BE BE BE BE BE BE 1570 247 BE BE BE BE BE 760 0.379 MW-09BR 05/21/2015 BE BE BE BE BE BE BE BE BE 2540 317 BE BE BE BE BE 860 BE MW-13BR 03/03/2015 6.4 BE BE BE BE BE BE BE 1.7 335 268 BE BE BE BE BE BE 0.879 MW-13BR DUP 03/03/2015 6.4 BE BE BE BE BE BE BE 1.74 319 269 BE BE BE BE BE BE 0.82 MW-13BR 05/20/2015 5.4 BE BE BE BE BE BE BE BE BE 105 BE BE BE BE BE BE BE MW-14BR 02/13/2015 BE BE BE BE BE BE BE BE BE BE 216 BE BE BE BE BE BE 0.528 MW-16BR 03/11/2015 6.3 BE BE BE BE BE BE BE 3.49 60100 852 BE BE BE BE BE BE BE MW-16BR 05/28/2015 5.9 BE BE BE BE BE BE BE 1.61 56900 715 BE BE BE BE BE BE BE MW-18BR 05/04/2015 5.9 BE BE BE 892 BE BE BE BE BE 227 BE BE BE 260 BE 660 0.554 MW-18BR 05/28/2015 5.7 BE BE BE 851 BE BE BE 1.02 BE 313 BE BE BE 290 BE 660 BE MW-22BR 06/30/2015 6.4 BE BE BE BE BE BE BE BE 16000 324 BE BE BE BE BE BE BE PZ-17D 05/15/2015 5.8 BE BE BE 889 BE BE BE BE 450 BE BE BE 22.2 BE BE BE BE PZ-17S 05/15/2015 5.4 BE BE BE BE BE BE BE BE BE BE BE BE BE BE BE BE BE Prepared by: BER/SRW Checked by: KLS Notes: - Bold highlighted concentration indicates exceedance of the 15A NCAC 02L Standard, Appendix 2, April 1, 2013. ug/l = microgram per liter mg/l = milligrams per liter S.U. = Standard Units * - Interim Maximum Allowable Concentrations (IMACs) of the 15A NCAC 02L Standard, Appendix 1, April, 1, 2013. BE = indicates concentration was below the 15A NCAC 02L Standard, April 1, 2013. DUP = Duplicate Analytical Parameter Al l u v i a l Sa p ro l i t e Be d r o c k Analytical Results 15A NCAC 02L Standard Tr a n si t i o n Z o n e Reporting Units P:\Duke Energy Progress.1026\102. Asheville Ash Basin GW Assessment Plan\1.11 CSA Reporting\tables\Table 10-4 2L Exceedances in Groundwater Page 1 of 1 TABLE 16-1 RECOMMENDED GROUNDWATER MONITORING PARAMETERS ASHEVILLE STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, ARDEN, NC PARAMETER RL UNITS METHOD pH NA SU Field Water Quality Meter Specific Conductance NA µS/cm Field Water Quality Meter Temperature NA ºC Field Water Quality Meter Dissolved Oxygen NA mg/L Field Water Quality Meter Oxidation Reduction Potential NA mV Field Water Quality Meter Turbidity NA NTU Field Water Quality Meter Aluminum 0.005 mg/L EPA 200.7 or 6010C Antimony 0.001 mg/L EPA 200.8 or 6020A Arsenic 0.001 mg/L EPA 200.8 or 6020A Barium 0.005 mg/L EPA 200.7 or 6010C Beryllium 0.001 mg/L EPA 200.8 or 6020A Boron 0.05 mg/L EPA 200.7 or 6010C Cadmium 0.001 mg/L EPA 200.8 or 6020A Chromium 0.001 mg/L EPA 200.7 or 6010C Cobalt 0.001 mg/L EPA 200.8 or 6020A Copper 0.001 mg/L EPA 200.8 or 6020A Iron 0.01 mg/L EPA 200.7 or 6010C Lead 0.001 mg/L EPA 200.8 or 6020A Manganese 0.005 mg/L EPA 200.8 or 6020A Mercury 0.0005 mg/L EPA 245.1 Molybdenum 0.001 mg/L EPA 200.8 or 6020A Nickel 0.001 mg/L EPA 200.7 or 6010C Selenium 0.001 mg/L EPA 200.8 or 6020A Silver 0.001 mg/L EPA 200.8 or 6020A Thallium (low level)0.0002 mg/L EPA 200.8 or 6020A Vanadium 0.0003 mg/L EPA 200.8 or 6020A Zinc 0.005 mg/L EPA 200.7 or 6010C Alkalinity (as CaCO3)20 mg/L SM 2320B Bicarbonate 20 mg/L SM 2320 Calcium 0.01 mg/L EPA 200.7 Carbonate 20 mg/L SM 2320 Chloride 0.1 mg/L EPA 300.0 or 9056A Magnesium 0.005 mg/L EPA 200.7 Nitrate as Nitrogen 0.023 mg-N/L EPA 300.0 or 9056A Potassium 0.1 mg/L EPA 200.7 Sodium 0.05 mg/L EPA 200.7 Sulfate 0.1 mg/L EPA 300.0 or 9056A Total Dissolved Solids 25 mg/L SM 2540C Total Organic Carbon 0.1 mg/L SM 5310 Total Suspended Solids 2 mg/L SM 2450D Prepared by: RBI Checked by: BDW Notes: INORGANICS FIELD PARAMETERS NA indicates not applicable. 1. Select constituents will be analyzed for total and dissolved concentrations. ANIONS/CATIONS P:\Duke Energy Progress.1026\102. Asheville Ash Basin GW Assessment Plan\1.11 CSA Reporting\tables\Table 16-1 Recommended Groundwater Monitoring Parameters.xlsx Page 1 of 1 TABLE 16-2 RECOMMENDED GROUNDWATER MONITORING LOCATIONS ASHEVILLE STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, ARDEN, NC Section Monitoring Well ID Geologic Unit Monitored Rationale Running Count B MW-11 Alluvium Downslope of ash basin, adjacent to French Broad 1 B MW-11D Transition Zone Downslope of ash basin, adjacent to French Broad 2 B MW-15A Alluvium Downslope of ash basin, adjacent to French Broad 3 B MW-15D Transition Zone Downslope of ash basin, adjacent to French Broad 4 B,C MW-16A Alluvium Downslope of ash basin, adjacent to French Broad 5 B,C MW-16BR Transition Zone Downslope of ash basin, adjacent to French Broad 6 B MW-17A Alluvium Downslope of ash basin, adjacent to French Broad 7 B,E MW-18D Transition Zone Downslope of ash basin, adjacent to French Broad 8 B,E MW-18BR Bedrock Downslope of ash basin, adjacent to French Broad 9 B CB-07 Alluvium Downslope of ash basin, adjacent to French Broad 10 B CB-06 Alluvium Downslope of ash basin, adjacent to French Broad 11 B MW-20A Alluvium Downslope of ash basin, adjacent to French Broad 12 D CB-05 Alluvium Downslope of ash basin, adjacent to French Broad 13 B MW-21D Transition Zone Downslope of ash basin in southwest direction 14 B MW-22D Transition Zone Downslope of ash basin in southwest direction 15 B MW-22BR Bedrock Downslope of ash basin in southwest direction 16 D CB-04 Saprolite Downslope of ash basin in southwest direction 17 D CB-04B Bedrock Downslope of ash basin in southwest direction 18 D MW-05D Transition Zone Downslope of ash basin in southwest direction 19 D MW-05BR Bedrock Downslope of ash basin in southwest direction 20 D MW-03D Transition Zone Downslope of ash basin in southwest direction 21 MW-23DU Transition Zone Monitor contaminant migration south of ash basin 22 MW-23DL Transition Zone Monitor contaminant migration south of ash basin 23 MW-24S Saprolite Determine background concentrations upland of basins 24 CB-01 Saprolite Monitor contaminant migration east of ash basins 25 CB-01D Transition Zone Monitor contaminant migration east of ash basins 26 D GW-01 Transition Zone Determine background concentrations upland of basins 27 D GW-01D Transition Zone Determine background concentrations upland of basins 28 D GW-01BR Bedrock Determine background concentrations upland of basins 29 C CB-09 Saprolite Determine background concentrations upland of basins 30 C CB-09SL Saprolite Determine background concentrations upland of basins 31 C CB-09BR Bedrock Determine background concentrations upland of basins 32 MW-13D Transition Zone Monitor contaminant migration northwest of basins 33 MW-13BR Bedrock Monitor contaminant migration northwest of basins 34 CB-08 Transition Zone Monitor contaminant migration northwest of basins 35 CB-08BR Bedrock Monitor contaminant migration northwest of basins 36 A,C MW-12D Transition Zone Adjacent to 1964 basin, intersecting flow path to French Broad 37 C MW-09S Saprolite Adjacent to 1964 basin, intersecting flow path to French Broad 38 C MW-09D Transition Zone Adjacent to 1964 basin, intersecting flow path to French Broad 39 C MW-09BR Bedrock Adjacent to 1964 basin, intersecting flow path to French Broad 40 C MW-08S Saprolite Adjacent to 1964 basin, intersecting flow path to French Broad 41 GW-2 Bedrock Adjacent to 1964 basin, intersecting flow path to French Broad 42 GW-3 Saprolite Adjacent to 1964 basin, intersecting flow path to French Broad 43 A MW-14BR Bedrock Monitor contaminant migration northwest of basins 44 MW-10 Alluvium Determine background concentrations upland of basins 45 AMW-3B Bedrock Determine background concentrations upland of basins 46 Prepared by: BDW Checked by:TDP File: P:\Duke Energy Progress.1026 \102. Asheville Ash Basin GW Assessment Plan\1.11 CSA Reporting\tables\Table 16-2 Recommended Groundwater Monitoring Locations Page 1 of 1 TABLE B-1 NC DENR ANALYSIS OF PRIVATE WATER WELLS MARCH 2015 AND APRIL 2015 ASHEVILLE STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, ARDEN, NC P:\Duke Energy Progress.1026\102. Asheville Ash Basin GW Assessment Plan\1.11 CSA Reporting\tables\Table B-1 Analysis of Private Well Water Page 1of 1 2015006170 2015006171 2015006271 2015006272 2015021986 2015021985 J15020240 J15020240 J15030146 J15030146 J15061010 J15061010 WellAS5 WellAS9 WellAS3 WellAS11 AS14 AS13 2/9/2015 2/9/2015 3/4/2015 3/4/2015 6/26/2015 6/26/2015 R&C R&C Prism Prism Pace Pace 3/10/2015 3/10/2015 4/20/2015 4/20/2015 7/13/2015 7/13/2015 Test Parameter Analytical Method Limits Source Units AS 5 AS 9 AS 3 AS 11 AS14 AS13 Anions Chloride EPA 300.0 250 2L mg/L 7.75 2.17 61 56 10.4 83.9 Anions Sulfate EPA 300.0 250 2L mg/L 1.32 4.68 12 340 243 356 ICP Metals Aluminum (Al)EPA 200.7 mg/L < 0.05 < 0.05 < 0.05 < 0.05 < 0.01 < 0.01 ICP Metals Barium (Ba)EPA 200.7 0.7 2L mg/L 0.051 0.016 0.044 0.0056 0.0167 0.0071 ICP Metals Boron (B)EPA 200.7 0.7 2L mg/L < 0.1 < 0.1 < 0.5 < 0.5 0.325 0.0386 ICP Metals Calcium (Ca)EPA 200.7 mg/L 4.9 15 8.5 97 117 137 ICP Metals Chromium (Cr)EPA 200.7 0.01 2L mg/L < 0.001 < 0.001 < 0.001 < 0.001 < 0.0005 < 0.0005 ICP Metals Copper (Cu)EPA 200.7 1 2L mg/L < 0.005 0.012 0.023 < 0.005 0.0035 0.002 ICP Metals Iron (Fe)EPA 200.7 0.3 2L mg/L 0.084 < 0.05 0.09 < 0.05 < 0.05 0.108 ICP Metals Magnesium (Mg)EPA 200.7 mg/L 2.1 2.8 5.3 1 13.8 1.44 ICP Metals Manganese (Mn)EPA 200.7 0.05 2L mg/L 0.012 < 0.005 0.039 < 0.005 0.24 0.0051 ICP Metals Nickel (Ni)EPA 200.7 0.1 2L mg/L < 0.005 < 0.005 0.007 < 0.002 < 0.0005 < 0.0005 ICP Metals Potassium (K)EPA 200.7 mg/L 1.4 2 1.7 1.6 3.98 2.42 ICP Metals Sodium (Na)EPA 200.7 mg/L 5.1 6.4 29 72 18.8 77.9 ICP Metals Strontium (Sr)EPA 200.7 mg/L 0.06 0.084 0.073 0.21 0.426 0.342 ICP Metals Zinc (Zn)EPA 200.7 1 2L mg/L < 0.005 0.019 0.025 0.018 0.0341 < 0.005 IMS Metals Antimony (Sb)EPA 200.8 1 (IMAC)ug/L < 1 < 1 < 1 < 1 < 0.5 < 0.5 IMS Metals Arsenic (As)EPA 200.8 10 2L ug/L < 5 < 5 < 1 < 1 < 0.5 < 0.5 IMS Metals Beryllium (Be)EPA 200.8 4 (IMAC)ug/L < 1 < 1 < 1 < 1 < 0.2 < 0.2 IMS Metals Cadmium (Cd)EPA 200.8 2 2L ug/L < 0.1 < 0.1 < 1 < 1 < 0.08 < 0.08 IMS Metals Cobalt (Co)EPA 200.8 1 (IMAC)ug/L < 1 < 1 1 < 1 < 0.5 < 0.5 IMS Metals Lead (Pb)EPA 200.8 15 2L ug/L < 2 < 2 6.5 < 1 0.47 0.35 IMS Metals Molybdenum (Mo)EPA 200.8 ug/L < 5 < 5 < 2 8.4 3.1 10 IMS Metals Selenium (Se)EPA 200.8 20 2L ug/L < 5 < 5 < 1 < 1 < 0.5 < 0.5 IMS Metals Thallium (Tl) Low Level EPA 200.8 0.2 (IMAC)ug/L < 0.1 < 0.1 < 1 < 1 < 0.1 < 0.1 IMS Metals Vanadium (V) Low Level EPA 200.8 0.3 (IMAC)ug/L < 0.3 < 0.3 < 5 < 5 < 1 < 1 Wet Lab Mercury (Hg)EPA 245.1 1 2L ug/L < 0.2 < 0.2 < 0.2 < 0.2 < 0.2 < 0.2 Wet Lab TDS SM2540C 500 2L mg/L 44 81 140 560 526 696 Wet Lab TSS SM2540D mg/L 1.3 < 1 < 3.1 < 3.1 < 2.5 < 4.5 Vendor Work Alkalinity (Vendor)mg/L 9.8 58.8 5.8 13 117 7.2 Vendor Work Bicarbonate Alkalinity (Vendor)mg/L 9.8 58.8 5.8 13 117 7.2 Vendor Work Carbonate Alkalinity (Vendor)mg/L 0 0 < 5 < 5 < 5 < 5 Vendor Work Hexavalent Chromium (Vendor)mg/L < 0.01 < 0.01 < 0.01 < 0.01 < 0.00003 < 0.00003 Vendor Work Conductivity (Vendor)umhos/cm 72.6 128 214 713 709 990 Vendor Work Dissolved Oxygen (Vendor)mg/L 6.2 4.1 4.8 2 7.79 0.03 Vendor Work pH (Vendor)su 5.1 6.2 5 8.6 7.59 7.63 Vendor Work Temperature (Vendor)° C 15.4 16.2 14.8 15.3 20 15.3 Vendor Work Turbidity (Vendor)NTU 1.1 < 1 < 1 < 1 < 1 1.9 Source: "Copy of Receptor Survey Vendor 2015-07-27.xls" from Duke Energy Reported Date Sample ID Order ID Well ID Sample Date Laboratory TABLE B-3 PUBLIC AND PRIVATE WATER WELLS - UPDATED JULY 2015 WITHIN 0.5 MILE RADIUS OF ASH BASIN COMPLIANCE BOUNDARY ASHEVILLE STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, ARDEN, NC P:\Duke Energy Progress.1026\102. Asheville Ash Basin GW Assessment Plan\1.11 CSA Reporting\tables\ Table B-3 Asheville DWW&RS Supplemental Rev2 Page 1 of 2 8/15/2015 MAP WELL ID PUBLIC WATER SYSTEM NAME PROPERTY ADDRESS PROPERTY OWNER PARCEL ID NUMBER MU N I C I P A L WE L L OT H E R DR I N K I N G IR R I G A T I O N LI V E S T O C K SW I M M I N G P O O L NO T I N U S E OT H E R APPROXIMATE DISTANCE FROM COMPLIANCE BOUNDARY (FEET) WELL DEPTH (FEET) WELL CASING OR OPEN HOLE DEPTH (FEET)SCREEN INTERVAL (FEET) DW-1 NA 00313 LONG SHOALS RD HICKLIN HILL LLC 964427668600000 Y X 2690 500 DW-2 NA 00018 HOYT RD ROMINE JACK R & ROMINE CAROL W 964412057200000 Y X 2270 DW-3 NA 00040 BEAR LEAH TRL MOTTINGER KENT T & MOTTINGER JIMI G 964441277300000 610 DW-4 NA 00038 BEAR LEAH TRL MOTTINGER KENT T & MOTTINGER JIMI G 964441533400000 690 DW-5 NA 00036 BEAR LEAH TRL HART CECILY ANN 964441706600000 Y Y X 850 DW-6 NA 00016 BEAR LEAH TRL GASPERSON TIMOTHY D (ETAL)964440834500000 1555 DW-7 NA 00404 GLENN BRIDGE RD CRAIG AUDREY 964440800000000 2140 DW-8 NA 00018 GLENVIEW RD MONTGOMERY SHANNON & HUGHES DANNY A 964460986100000 1895 DW-9 NA 00124 NEW ROCKWOOD RD ANGEL SHERRY BATES 964452910900000 Y Y X 360 DW-10 NA 00015 HOYT RD BEAL JOHN D & BEAL RACHEL P 964403801300000 Y X X 2405 DW-11 NA 00022 WINTERHILL RD BERLIN ARNOLD L & BERLIN GLORIA 964460714900000 Y X 2420 220 DW-12 (PRW-4)NA 00213 SUMNER DR BROWN WALLACE A & WAGNER STACEY C 964421373800000 Y X 1905 600 DW-13 NA 00312 GLENN BRIDGE RD COPNEY MKEKA BRIAN 964460865800000 Y Y X 1985 DW-14 (PRW-8)NA 00218 SUMNER DR CRUZ SEGARRA RICARDO & CRUZ SEGARRA JERI A 964431271400000 Y Y X X 1080 800 100 DW-15 NA 00218 SUMNER DR CRUZ SEGARRA RICARDO & CRUZ SEGARRA JERI A 964431271400000 Y Y 1215 DW-16 NA 00014 HOYT RD DENNIS DEBORAH M 964402854200000 Y Y X 2535 DW-17 NA 00014 HOYT RD DENNIS DEBORAH M 964402854200000 Y Y spring 2440 DW-18 NA 00039 GLENVIEW PL GRADY WILLIAM D & GRADY KAROLEN A 964471719900000 Y 1805 DW-19 NA 150 NEW ROCKWOOD RD HARDY CANDACE L 964451451800000 Y spring X 710 DW-20 NA 00182 BRADLEY BRANCH RD HOLDEN MARY ELIZABETH 964480780600000 Y Y X 2650 DW-21 NA 00048 HOYT RD HOLT JUANITA IRENE 964432213800000 Y spring 860 DW-22 NA 00211 GLENN BRIDGE RD HUNT CONNIE 964491162300000 Y X 2540 DW-23 NA 00026 HOYT RD HUTCHISON ALVIN & HUTCHISON SUSAN 964412655900000 Y X 1840 225 70 DW-24 NA 00025 HOYT RD LANCE VENICE G 964413512500000 Y X X 1725 16-18 DW-25 NA 00140 GLENN BRIDGE RD LEIK INCORPORATED 965402139700000 Y Y X 3245 800 40 DW-26 NA 00140 GLENN BRIDGE RD LEIK INCORPORATED 965402139700000 Y Y 3260 DW-27 NA 00115 JUSTIN TRL DAN GILBERT 964430665500000 Y X 1530 300 DW-28 (PRW-9)NA 00105 JUSTIN TRL MCCLELLAN B & MCCLELLAN ON & SHEILA C 964420870000000 Y X X 2255 137 DW-29 NA 00139 LEDBETTER RD ORR WHITNEY L & ROHRBAUGH STUART W 964404689000000 Y Y X 2355 DW-30 NA 00044 HOYT RD PACK FRANCES IMAJEAN 964422923100000 Y X 1055 635 37 DW-31 NA 00042 HOYT RD PACK FRANCES IMAJEAN 964422951800000 Y X 870 410 21 DW-32 NA 148 LEDBETTER RD RICE TOM B & RICE LEONIA 964413785000000 Y 1370 285 DW-33 NA 00006 SHADE DR SHADE GENEVA 964470956100000 Y X 2515 78 DW-34 (PRW-3)NA 00215 SUMNER DR SIMPSON JOSEPH T & SIMPSON DEBORAH J 964421784900000 Y Y X 1420 585 SOURCE OF DRINKING WATER WELL USE Several springs. TABLE B-3 PUBLIC AND PRIVATE WATER WELLS - UPDATED JULY 2015 WITHIN 0.5 MILE RADIUS OF ASH BASIN COMPLIANCE BOUNDARY ASHEVILLE STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, ARDEN, NC P:\Duke Energy Progress.1026\102. Asheville Ash Basin GW Assessment Plan\1.11 CSA Reporting\tables\ Table B-3 Asheville DWW&RS Supplemental Rev2 Page 2 of 2 8/15/2015 MAP WELL ID PUBLIC WATER SYSTEM NAME PROPERTY ADDRESS PROPERTY OWNER PARCEL ID NUMBER MU N I C I P A L WE L L OT H E R DR I N K I N G IR R I G A T I O N LI V E S T O C K SW I M M I N G P O O L NO T I N U S E OT H E R APPROXIMATE DISTANCE FROM COMPLIANCE BOUNDARY (FEET) WELL DEPTH (FEET) WELL CASING OR OPEN HOLE DEPTH (FEET)SCREEN INTERVAL (FEET) SOURCE OF DRINKING WATER WELL USE DW-35 (PRW-2)NA 00025 BRITTIAN PARK DR WEBB JAMES S & WEBB SUE PARKER W 964403737400000 Y X 2325 100 DW-36 NA 00024 CUTSHAW DR WILLIS PEGGY JO 964471665800000 Y Y X 1360 DW-37 (PRW-7)NA 00212 SUMNER DR YOUNG DON & YOUNG MARIE 964421842200000 Y X 1725 450 DW-38 NA 00067 NEW ROCKWOOD RD DOAN SANDRA KAY 964472027900000 Y Y X 540 PRW-1 NA 00017 BRITTIAN PARK DR WEBB JAMES CURTIS 964403526400000 2565 PRW-5 NA 00211 SUMNER DR LEATHERWOOD ALEXANDER RYAN 964421215600000 2285 PRW-6 NA 00102 JUSTIN TRL MCCLELLAN DONALD L 964421601800000 2155 PRW-10 NA 00206 SUMNER DR SUMNER TERESA FORE 964329687700000 2910 EDR-1 NA 00185 BRADLEY BRANCH RD POPLAR TERRACE MOBILE HM PRK TRUST & ASHEVILLE PRO 964480552400000 2750 NOTES Municipal includes County, City, or other municipal water source(s). UNK - Unknown NA - Not available - Possible water supply well. - Reported/Observed water supply well. - Water supply well or spring reported by property owner. - Information provided in EDR; no well reported by property owner or observed. Last Revised: July 31, 2015 Parcel ID, owner and well location address information were obtained from the Buncombe County North Carolina website (http://www.buncombecounty.org/Governing/Depts/GIS/) Prepared By: HJF Checked By: TDP SynTerra CSA Supplement 1 Figures & Tables - bD-CI eEor i, u [ ' cE� --IE 4a7 E IE-ED .Er TAKE JULIAN aui rT IL O D W-23 L� r LAKL(FOMA A316 o O craws PRwb O i H MW-14BR �` - R1i � WArEF INiAHE PoOt T-Q'lsE - s cromr ia- / MW 13D ®MW13BR n. yy.. ' - r \ 1w 1 CB 8BR CB8 t-� 1 ace rono MW-96R rz��ENi Div e?sIN 6 i�1 / • r MW-93®MW-9D - — NTFL PONT /sn+:o Piae _ HOT PoNO - ti MWBS "^�.�\ �.��, to � t�+ aeovE oaoonD ramnv WILD 1D A& —MW_u111A " t MH-17 I/ 1664 ASH BASIN `a PZ 26 MW 1D MW-18R 0 PI aACNGATE` / �I — cunao H_OusE C P-103 G02 MW-186RL CBr � GW 31� O AS8 sv O nsl; O AS2o O MWd.86R COl � `D-Ol i MW- 9BR, UP, MW-20A6 \ O AS7 SW-101 W t00 O A814 ,& ABMW-118R f- P-102 1982 ASH BASIN IF - I - I': I (➢P i00 -� GW-4'iI \ C[ M W-6D M W.6S r MW -6BR t FP Z-2 2 GW 5 ce-3 S 9 C BCB-3� A a® MWSD MW 56R MW-22D IV MW 228R AMW18 10 O A51/DW-9 AMW-2A // y AMW 26 MW-23DU A MW'23DL MW-23BR �srrN a^" I EEO � s SFr Dw13 O rr LEGEND - DUKE ENERGY PROGRESS PARCEL LINE BUNCOMBE COUNTY PARCEL LINE CCR SURFACE IMPOUNDMENT COMPLIANCE BOUNDARY CCR SURFACE IMPOUNDMENT B CB-8D CSA MONITORING WELL (SURVEYED) �p FC-B-81 COMPLIANCE MONITORING WELL (SURVEYED) 2 CB-1 BACKGROUND COMPLIANCE MONITORING WELL (SURVEYED) '.9 GW-4 MONITORING WELL (SURVEYED) r P-10 PIEZOMETER (SURVEYED) O S-T2 SEEP SAMPLE LOCATION _aIP ABANDONED WELL oR t EDR REPORTED WELL (APPROXIMATE) .,. 0DW-21 WATER SUPPLY WELL STREAM APPROXIMATE STORM WATER DITCH APPROXIMATE # ) SOURCES: _. 1.) MARCH 16. 2015 AERIAL PHOTOGRAPH OBTAINED FROM NC GEOSPATIAL PORTAL AT http://Ga[a.nconemap.gov/geopoltaVcatalog/malNllome.page "�� f i•: 2.)DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CARODNA STATE PLANE COORDINATE SYSTEM FIRS 32W (NAD 83). g 3.I PARCEL BOUNDARY WAS OBTAINED FROM BUNCOMBE COUNTY GIS DATA. 4) COMPLIANCE MONITORING WELL LOCATIONS AND WASTE BOUNDARY FROM BOA OF INC, SURVEY DATED MARCH 2O09. COMPLIANCE WELLS CB-3R, CB-9 AND SG1 SURVEYED BY FICA OF Nc. SURVEY DATED 2012-11-28. ry a'.I ADDITIONAL MONITORING WELL AND PIEZOMETER LOCATIONS WERE BASED ON DATA 1-7 PROVIDED BY PROGRESS ENERGY. IF AD vcT`EE \\ cl \ o � MW-10 AMW-3A - fAAMW-38'. GRAPHIC SCALE 150 0 150 300 600 i (IN FEET) i AS12 O O Dw-22 . synTerra j O mA, 13 JT,cA. 1 \ / ) 1��'� _ 148 River Street, Suite 220 Greenville, South Carolina 29601 864-421-9999 O DW_20 www.synterracorp.com DRAWN BY: JOHN CHASTAIN DATE: 08/07/2016 CHECKED BY: TODD PLATING DATE: 08/07/2016 \ \ PROJECT MANAGER: KATHY WEBB _ LAYOUT NAME: FIG 1-2 (SITE LAYOUT MAP) DUKEO O W33 ENERGY PROGRESS ASHEVILLE PLANT 200 CP & L DRIVE ARDEN, NORTH CAROLINA FIGURE 1-2 SITE LAYOUT MAP 7W _ {p. MW-14BR 5918, .� \CB-9BR CB 8BR \ MW-13BR f♦ �- 1 #'' ♦♦_ MW-9B , `\MAN-16BR • ♦ r. • -I. - ' r ♦_ ♦ "a 1982 _ ♦ _ 4 mod' \ GW-2 ASH BASIN 1 1964ASH BASIN ABMW-5BR ♦� ,y �,• Mw-1BIR „� LEGEND ♦ - x ILI " � 1 SPECIFIC CONDUCTANCE CONCENTRATION (umho: M8BRSI _ ND NOT DETECTED ABOVE REPORTING LIMIT 90ABMW-11BR 350. ` ' ` HIGHEST CONCENTRATION AREA CONTOUR a ` �y -`J'y PZ-17D STANDARD CONTOUR 376 k. INTERMEDIATE CONTOUR - 1. , APPROX. PROVISIONAL BACKGROUND CONTOUR , MW-2BR � eMONITORING WELL _ G PIEZOMETER ♦b` . / �,` �� v® .� WATER SUPPLY WELL - ♦, MW-5BR /� 1 ` f `® ASH BASIN BOUNDARY W CB-413 / - _ _ _ _ASH BASIN COMPLIANCE BOUNDARY DUKE ENERGY PROGRESS ASHEVILLE PLANT SITE `. AMW-1 BN % - -, -3BOUNDARY AMWB ,,ter ... • r -3 . NOTES: AS-13 ♦ - �. ` ! CONCENTRATIONS SHOWN REFLECT DATA GATHERED BETWEEN `�' AS=S ■ .1�: ' 2/9/16 AND 7/12/16. 40 y NONORTH CAROLINA2LOR INTERIM MAXIMUM ALLOWABLE AS-11 254 CONCENTRATION ESTABLISHED FOR SPECIFIC CONDUCTANCE. �V"af� �AS 17 ` 7,7, 2 # r iG m` • •41, v / AS-4 369 AERIAL PHOTOGRAPH OBTAINED FROM GOOGLE EARTH PRO, ', AS-15 DATED10/18/2015. 58 454 r DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANE COORDINATE SYSTEM FIPS 3200 (NAD83/2011). AS 20 F ik * &;',=# `•' p i,�" 4Z3 GRAPHIC SCALE --14D6 FIGURE 1 ' 1s1 �N FEET ISOCONCENTRATION MAP 148 RIVER STREET, SUITE 220 SPECIFIC CONDUCTANCE IN BEDROCK PHONE 86442019999AROLINA29601 UTH GROUNDWATER Terra t n r, or om ASHEVILLE STEAM ELECTRIC PLANT PROET. CT MANAGER: PLATING DATE: 08/25/2016 ARDEN, NORTH CAROLINA CHECKED BY: T. PLATING II �to'� dy '4 F 352 -'ram ' • ` �-- •', \CB-9BR ♦� 1 �• ND f •. •. �' MW-13BR�'�' • - 1 a � . `CB-8BRwOT IOT /� 1 • �. \ MW-9BRfiv �. • . N8D MW-1T6BR1 AWI -. yt GW-1BR j 1982 ASH BASIN 1 GW-2 / 1964ASH ,• BASIN \ ABMW-5BR It MW-1 BR \MW-18BR I ABMW-11BR ' ® � 1 PZ-17D �• ol i ♦` MW-6BR ♦4* MW-51BR • AMW-1 B '00- /AS-13 CY. �_ND SAS-17 AS-11 MW-22BR i ND AS-15 Ny,D AS=6 AS-4 4" ���,� P4 , AS-14 �i7�� �✓� Cpw� AS 20 �r A �j►��� �`R;. /°� �� i Its 7. DW-6 a . r •1 LEGEND GRAPHIC SCALE 330 165 0 330 N FEET 148 RIVER STREET, SUITE 220 GREENVILLE, SOUTH CAROLINA 29601 PHONE 864-421-9999 synTerra IR-1 n erracor com DRAWN YO BY: B. UNG DATE: 08/25/2016 PROJECT MANAGER: T. PLATING CHECKED BY: T. PLATING 660 NOTES: FIGURE 1-20 ISOCONCENTRATION MAP BORON IN BEDROCK GROUNDWATER ASHEVILLE STEAM ELECTRIC PLANT ARDEN, NORTH CAROLINA ; " � - i 0 'k -v ho - 'A As w_ o , • • MW-14BR Tull;i I6.2 .ICI ._._.—•`- • r �-- MW CB-8113`R - 6.4 ! ! MW.-9BR LMW-16BR 120 '01;x. AMW-18BR %♦ 98 W" e r %. CBr.4B AS-13 .M6.8 AS-11 22E.8 1982 ASH BASIN ABMW-5BR MW-6BR / MW-5BR I' I • _ AMW-1 B% } •9"8 GW-1 BR j ♦'. MW-1 BR I 1 �I 1 1�lp synTerra LEGEND - - '• A AMW-3B, ` y� GRAPHIC SCALE 330 165 0 330 660 148 RIVER STREET, SUITE 220 GREENVILLE, SOUTH CAROLINA 29601 PHONE 864-421-9999 wwwsvnterracorp.com DRAWN BY: B. YOUNG DATE: 08/25/2016 PROJECT MANAGER: T. PLATING CHECKED BY: T. PLATING P-\N,kP F—rnv Prnnrw..a 1OP6\00 (`,IS RARF r)ATA\A havill 1 TOTAL CHLORIDE CONCENTRATION (mg/L) ND NOT DETECTED ABOVE REPORTING LIMIT HIGHEST CONCENTRATION AREA CONTOUR NORTH CAROLINA 2L CONTOUR 1 /♦ , � INTERMEDIATE CONTOUR • / r ♦` APPROX. PROVISIONAL BACKGROUND CONTOUR MONITORING WELL G PIEZOMETER WATER SUPPLY WELL ASH BASIN BOUNDARY ASH BASIN COMPLIANCE BOUNDARY DUKE ENERGY PROGRESS ASHEVILLE PLANT SITE — ��BOUNDARY NOTES: CONCENTRATIONS SHOWN REFLECT DATA GATHERED BETWEEN w;. 2/9/16 AND 7/12/16. THE NORTH CAROLINA 2L FOR CHLORIDE IS 250 mg/L. PROVISIONAL BACKGROUND CONCENTRATION IS 6.4 mg/L. AERIAL PHOTOGRAPH OBTAINED FROM GOOGLE EARTH PRO, DATED 10/18/2015. r DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANE COORDINATE SYSTEM FIPS 3200 (NAD83/2011). FIGURE 1-23 ISOCONCENTRATION MAP CHLORIDE IN BEDROCK GROUNDWATER ASHEVILLE STEAM ELECTRIC PLANT ARDEN, NORTH CAROLINA AS-9 bA do ski MW-14B CB-9BR M13 • ••CB-8BR � e e n- • MW-9BR'° `\ WV-1613R _ 1.0 `•� 1 .. \ GW-2 120 1964ASH BASIN ABMW-5BR MW-18BR1982 ASH MW-1 BR ASH - r,� BASIN Gd+ ABMW-11 BR .: ti �., �> �%MW-2BR MW-6BR • �� MW-5BR • CB-4B� _ AMW-1 B 420 � � • •. AS-11 MW-2213R AS' 1lP., 1-0- . LEGEND 1 TOTAL SULFATE CONCENTRATION (mg/L) ND NOT DETECTED ABOVE REPORTING LIMIT HIGHEST CONCENTRATION AREA CONTOUR NORTH CAROLINA 2L CONTOUR �. INTERMEDIATE CONTOUR APPROX. PROVISIONAL BACKGROUND CONTOUR MONITORING WELL ` G PIEZOMETER WATER SUPPLY WELL e" ASH BASIN BOUNDARY ASH BASIN COMPLIANCE BOUNDARY , DUKE ENERGY PROGRESS ASHEVILLE PLANT SITE —' BOUNDARY AMW-3B` NOTES: CONCENTRATIONS SHOWN REFLECT DATA GATHERED BETWEEN 2/9/16 AND 7/12/16. THE NORTH CAROLINA 2L FOR SULFATE IS 250 mg/L. PROVISIONAL BACKGROUND CONCENTRATION IS 4.4 mg/L. AERIAL PHOTOGRAPH OBTAINED FROM GOOGLE EARTH PRO, DATED 10/18/2015. DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANE COORDINATE SYSTEM FIPS 3200 (NAD83/2011). �. { a 150 y� - >; DW-6 .7 , 0.46 ' k s -` AS-14 1 Terra '; _�. glib `• GRAPHIC SCALE 330 165 0 330 660 FIGURE 1-47 IN FEET ISOCONCENTRATION MAP 148 RIVER STREET, SUITE 220 SULFATE IN BEDROCK GROUNDWATER PHONE 64-421-rHCARouNA29601 ASHEVILLE STEAM ELECTRIC PLANT PHONE 864-421-9999 WwWBOm DATE: 08/25/2016 ARDEN, NORTH CAROLINA PROJECT MANAGER: T. PLATING CHECKED BY: T. PLATING MW-146R / • MW-13BR-i--.—.—.Tv -A-- CB-9BR ♦, ' 1 . ACIB- • • _ \ MW-9BR • `, .�� GW-1 BR 1982 • \ GW-2 ASH BASIN • M 6 1964ASH r BASIN ABMW-5BR / �. • 180 MW-1 BR / MW-18BR 56 ABMW-11 BR ' 1 ® ,�� PZ-17D �I a ', •, / 290 •, o '•` '� . MW-6BR MW-2BR _ GB-4B MW-5BR �� A ( 1 `_ ^%looll •` `. —} AMW-1 B'% - AMW-3113, ^ AS 13 711100, _ `MW-22BR LAS-11 570- ' AS-4 80 , n. e" L♦ 4 �' synTerra GRAPHIC SCALE 330 165 0 330 660 1148 RIVER STREET, SUITE 220 I GREENVILLE, SOUTH CAROLINA 29601 PHONE 864-421-9999 DRAWN BY: B. YOUNG DATE: 08/25/2016 PROJECT MANAGER: T. PLATING CHECKED BY: T. PLATING LEGEND 1 TOTAL DISSOLVED SOLIDS CONCENTRATION (mg/L) ND NOT DETECTED ABOVE REPORTING LIMIT HIGHEST CONCENTRATION AREA CONTOUR NORTH CAROLINA 2L CONTOUR INTERMEDIATE CONTOUR APPROX. PROVISIONAL BACKGROUND CONTOUR MONITORING WELL G PIEZOMETER WATER SUPPLY WELL ASH BASIN BOUNDARY ASH BASIN COMPLIANCE BOUNDARY DUKE ENERGY PROGRESS ASHEVILLE PLANT SITE — -BOUNDARY NOTES: CONCENTRATIONS SHOWN REFLECT DATA GATHERED BETWEEN 2/9/16 AND 7/12/16. THE NORTH CAROLINA 21- FOR TOTAL DISSOLVED SOLIDS IS 500 mg/L. PROVISIONAL BACKGROUND CONCENTRATION IS 151 mg/L. AERIAL PHOTOGRAPH OBTAINED FROM GOOGLE EARTH PRO, DATED 10/18/2015. DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANE COORDINATE SYSTEM FIPS 3200 (NAD83/2011). FIGURE 1-50 ISOCONCENTRATION MAP TOTAL DISSOLVED SOLIDS IN BEDROCK GROUNDWATER ASHEVILLE STEAM ELECTRIC PLANT ARDEN, NORTH CAROLINA E 1982 Basin o ` p 80% �' ri 80"% � x ,Zp 60% \y �G "� 6 0 % d'Q •1 O 20°fo CB-5 �� CB-7 z 20% 964 Basin i M -11 MW-15A �aA ©o no moo1-0 Background 0 0 0 0 Q? t—Ca— —CI 148 RIVER STREET, SUITE 220 GREENVILLE, SOUTH CAROLINA 29601 PHONE 864-421-9999 www.s nterracor .com ,tipDRAWN BY: T. PLATING DATE: JULY 2016 T�i, PROJECT MANAGER T. PLATING s LAYOUT: FILEu ATH: P'.\D ke Energy Progress.1026\102. Asheville Ash Basin GW Assessment Plan\ 19 EG_CSASUP\Slalls[ics\Piper Diagrams Well ID % Difference ABMW-02S 27.6 • CB-01 17.6 C B-04 7.4 • CB-09 18.1 • CB-09SL 8.12 GW-01 20.6 GW-03 9.91 MW-08S 0.396 MW-09S 3.37 • MW-24S 9.37 • CB-05 12.9 • CB-06 9.30 • CB-07 6.23 • MW-10 7.98 MW-11 3.12 MW-15A 3.82 MW-16A 6.2 MW-17A 4.57 MW-20A 12.7 Notes: • Background 1982 Basin 1964 Basin Red text indicates ion charge balance percent difference greater than 10%. Data included for analysis from Round 4 sampling event(January 2016. FIGURE 1-81 PIPER DIAGRAM - SURFICIAL ZONE ASHEVILLE STEAM ELECTRIC PLANT 200 CP&L DRIVE ARDEN, NORTH CAROLINA 0 80% .� 60% /40% 20% ..f 6a° Va. O 8 at— Ca — 80 0 60% 1O a • 0" o 0% Boron MW-22D y sue• 11 , 10 JR Background Ci --ip- L7 synTerra 148 RIVER STREET, SUITE 220 GREENVILLE, SOUTH CAROLINA 29601 PHONE 864-421-9999 wW W. sVn te rraco rp. co m DRAWN BY: T. PLATING DATE: JULY 2016 PROJECT MANAGER: T. PLATING LAYOUT: FI LEPATH: P'.\Duke Energy P,gressAOM102. Asheville Ash Basin GW Assessment Plan\ 19 EG_GSASUP\Slalls[ic \Piper Dlaq—, Well ID % Difference ABMW-04D 9.46 AMW-02A 16.9 • CB-01 D 6.40 CB-08 1.01 • GW-01 D 11.4 • MW-01 D 13.1 • MW-03D 5.8 • MW-05D 16.3 • MW-09D 2.18 • MW-11 D 2.73 • MW-12D 16.3 • MW-13D 6.75 • MW-15D 7.51 • MW-18D 8.43 • MW-21 D 3.38 • MW-22D 0.408 • MW-23DL 7.93 • MW-23DU 2.38 Notes: • Background 1982 Basin 1964 Basin Red text indicates ion charge balance percent difference greater than 10%. Data included for analysis from Round 4 sampling event (January 2016). FIGURE 1-82 PIPER DIAGRAM — TRANSITION ZONE ASHEVILLE STEAM ELECTRIC PLANT 200 CP&L DRIVE ARDEN, NORTH CAROLINA Well ID % Difference AMW-01 B 2.50 • AMW-03B 11.6 o� pQo °�CB-04B 1.47 CB-08BR 3.83 �d�� a \° • CB-09BR 8.41 j o° DQ • GW-01 BR 7.85 GW-02 0.549 o ry MW-01 BR 6.82 MW-05BR 13.1 MB-09BR 0.033 MW-13BR 9.80 AS-09 MW-14BR 0.796 MW-16BR 30.7 AMW-18BR 1.16 , MW-22BR 10.6 80% (1% PZ-17D 2.15 A ? PZ-17S 7.41 0 60% as ,r3 6 0 % `gip • AS-09 9.92 6, • AS-11 2.10 40% p° 40%\ • AS-13 4.55 Q\° ba • AS-14 3.02 20% • o° CB-08BR MW-22BR �0°Io • AS-20 0.568 Notes: AS_ g MW-13BR • Background 1982 Basin 'k '0. voa `�Oa Background -0 o\° a\° o\° 1964 Basin 0 0 0 o ry C • Private Water Supply Well Red text indicates ion charge balance percent difference greater Ca CI f than 10%. Data included for analysis from Round 4 sampling event (January 2016). 148 RIVER STREET, SUITE 220 GREENVILLE, SOUTH CAROLINA 29601 PHONE 864-421-9999 www.s nterracor .corn DRAWN BY: T. PLATING DATE: JULY 2016 Terr PROJECT MANAGER T. PLATING jc)maLAYOUT: FI LEPATH: Duke Energy Progreti .\Pi 6\102. Asheville Ash Basin GW Assessment Plan\ 19 iB EG_CSASUP\Slalls[ics\Piper Diagrams FIGURE 1-83 PIPER DIAGRAM — BEDROCK ZONE ASHEVILLE STEAM ELECTRIC PLANT 200 CP&L DRIVE ARDEN, NORTH CAROLINA TABLE 1-1 WELL CONSTRUCTION DETAILS ASHEVILLE STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, ARDEN, NC Identification Program Date Installed Monitoring Zone Material Diameter (inches) Northing (ft) Easting (ft) Total Well Depth' (Feet BGS) Screened Interval (Feet BGS) Measuring Point TOC Elevation (Feet MSL) Ground Surface Elevation (Feet MSL) Measured Well Depth (Feet TOC) Ash Basin ABMW-02 CAMA 3/11/2015 Ash Pore Water PVC 2 644193.446 944173.886 30 25 30 2150.30 2147.48 32.5 ABMW-02S CAMA 3/10/2015 Saprolite PVC 2 644197.299 944173.307 45 35 45 2150.29 2147.43 48.55 ABMW-04 CAMA 3/23/2015 Ash Pore Water PVC 2 643664.02 944356.036 55 50 55 2156.41 2153.10 59 ABMW-04BR CAMA 3/23/2015 Bedrock PVC 2 643658.2 944364.242 81 76 81 2156.41 2153.20 85.1 ABMW-04D CAMA 3/23/2015 Transition Zone PVC 2 643658.738 944355.794 66.5 61.5 66.5 2156.43 2153.23 70.5 ABMW-05BR CAMA 4/2/2015 Bedrock PVC 2 644066.825 945458.711 77 72 77 2137.68 2134.52 80.1 ABMW-05D CAMA 4/2/2015 Transition Zone PVC 2 644060.609 945458.767 40 30 40 2137.51 2134.36 43.06 ABMW-05S CAMA 3/30/2015 Saprolite PVC 2 644055.808 945458.926 27 22 27 2137.21 2134.28 29.97 ABMW-06BR CAMA 3/25/2015 Bedrock PVC 2 643639.995 946150.286 27 22 27 2151.50 2149.31 32.92 ABMW-07 CAMA 4/9/2015 Ash Pore Water PVC 2 642759.518 945404.438 12 7 12 2144.62 2141.64 15.82 ABMW-07BR CAMA 4/9/2015 Bedrock PVC 2 642759.222 945399.069 57 47 57 2144.57 2141.64 61.28 ABMW-07S CAMA 4/9/2015 Saprolite PVC 2 642758.18 945393.851 31 21 31 2144.66 2141.67 34.1 ABMW-08 CAMA 4/28/2015 Ash Pore Water PVC 2 642779.646 946158.894 30 20 30 2165.40 2162.91 33.32 ABMW-11BR CAMA/DATA GAP 12/30/2015 Bedrock PVC 2 643576.4 944794.38 156 136 156 2165.13 2165.48 156 CSA Wells CB-01BR CAMA 4/12/2015 Bedrock PVC 2 643309.762 946467.632 85 75 85 2197.18 2197.18 89.9 CB-01BRL CAMA/DATA GAP 12/20/2015 Bedrock PVC 6 643265.21 946472.63 328 OB OB 2197.43 2200.27 NM CB-01D CAMA BKGRD 4/13/2015 Transition Zone PVC 2 643314.249 946470.176 57 47 57 2197.21 2197.21 59.2 CB-08BR CAMA 4/23/2015 Bedrock PVC 2 645127.296 943045.093 95 85 95 2139.92 2139.92 99.3 CB-08D CAMA 4/22/2015 Transition Zone PVC 2 645122.331 943047.278 36 31 36 2140.52 2140.52 39.43 CB-09BR CAMA BKGRD 4/21/2015 Bedrock PVC 2 645585.6514 944225.4181 93 83 93 2181.11 2178.15 97.85 CB-09SL CAMA BKGRD 4/14/2015 Saprolite PVC 2 645595.2507 944227.571 74 69 74 2181.42 2178.17 78.1 GW-01BR CAMA 4/28/2015 Bedrock PVC 2 644226.305 946513.036 74 64 74 2181.49 2178.11 76.44 GW-01D CAMA 4/27/2015 Transition Zone PVC 2 644229.405 946520.488 44 34 44 2181.32 2178.33 46.45 MW-01BR CAMA 4/9/2015 Bedrock PVC 2 643966.653 946144.16 66 56 66 2170.03 2166.99 70.1 MW-01D CAMA 4/9/2015 Transition Zone PVC 2 643962.563 946147.959 40 35 40 2170.19 2166.95 43.08 MW-02BR CAMA 3/11/2015 Bedrock PVC 2 642718.441 945945.093 77 72 77 2168.03 2164.65 81.2 MW-03BR CAMA 3/31/2015 Bedrock PVC 2 642476.982 945214.383 91 81 91 2141.31 2138.15 95 MW-03D CAMA 3/31/2015 Transition Zone PVC 2 642486.811 945215.216 40 30 40 2142.04 2139.03 42.96 MW-04D CAMA 3/17/2015 Transition Zone PVC 2 642758.697 946389.259 38 33 38 2166.42 2163.27 41.82 MW-05BR CAMA 4/26/2015 Bedrock PVC 2 642369.098 944866.403 43 38 43 2085.74 2085.35 43.3 MW-05D CAMA 4/27/2015 Transition Zone PVC 2 642371.685 944870.236 26 16 26 2085.85 2085.54 26.3 MW-06BR CAMA 4/12/2015 Bedrock PVC 2 642610.67 944767.718 56 46 56 2062.31 2059.28 59.15 MW-06D CAMA 4/13/2015 Transition Zone PVC 2 642608.295 944772.91 28 23 28 2062.73 2059.45 31.25 MW-06S CAMA 4/13/2015 Saprolite PVC 2 642607.038 944778.44 17.5 7.5 17.5 2063.12 2059.85 21.02 MW-07BR CAMA 4/11/2015 Bedrock PVC 2 643619.05 943730.983 70 60 70 2073.58 2070.16 72.89 MW-08BR CAMA 2/3/2015 Bedrock PVC 2 644588.011 943388.961 80 70 80 2123.89 2123.90 82.2 MW-08S CAMA 2/4/2015 Saprolite PVC 2 644584.03 943389.913 40 30 40 2123.34 2123.46 39.8 MW-09BR CAMA 4/20/2015 Bedrock PVC 2 644862.111 943406.689 93 83 93 2145.43 2142.22 65.92 MW-09D CAMA 4/21/2015 Transition Zone PVC 2 644856.171 943403.214 44.5 34.5 44.5 2145.09 2141.82 48.84 MW-09S CAMA 4/21/2015 Saprolite PVC 2 644850.643 943401.141 28 18 28 2144.61 2141.51 31.84 MW-11D CAMA 2/5/2015 Transition Zone PVC 2 646194.603 942186.783 35 25 35 2035.22 2032.44 32.36 MW-12BR CAMA 3/20/2015 Bedrock PVC 2 645001.825 943708.374 105.5 95.5 105.5 2161.88 2158.92 109.8 MW-12D CAMA 3/20/2015 Transition Zone PVC 2 645000.207 943704.17 55.5 50.5 55.5 2161.89 2158.83 57.6 MW-13BR CAMA 2/23/2015 Bedrock PVC 2 645439.848 943740.8 56 46 56 2154.28 2151.48 59.44 MW-13D CAMA 1/30/2015 Transition Zone PVC 2 645440.319 943735.67 41 36 41 2153.97 2151.23 43.06 MW 146R CAMA 2/4/2015 Bedrock PVC 2 645921.638 942943.861 26 21 26 2076.87 2076.88 24.38 MW-15A CAMA 2/12/2015 Alluvial PVC 2 645527.168 942348.227 6 6 11 2034.60 2031.64 9.88 P:\Duke Energy Progress. 1026\102. Asheville Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 1-1 Well Construction Data Page 1 of 3 TABLE 1-1 WELL CONSTRUCTION DETAILS ASHEVILLE STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, ARDEN, NC Identification Program Date Installed Monitoring Zone Material Diameter (inches) Northing (ft) Easting (ft) Total Well Depth' (Feet BGS) Screened Interval (Feet BGS) Measuring Point TOC Elevation (Feet MSL) Ground Surface Elevation (Feet MSL) Measured Well Depth (Feet TOC) MW-15BR CAMA 2/12/2015 Bedrock PVC 2 645533.236 942347.132 112 102 112 2034.62 2031.68 116.5 MW-15D CAMA 2/12/2015 Transition Zone PVC 2 645539.537 942346.395 48 33 48 2034.41 2031.48 51.63 MW-16A CAMA 3/6/2015 Alluvial PVC 2 644728.661 942586.871 12 7 12 2036.96 2033.85 16.22 MW-16BR CAMA 3/6/2015 Bedrock PVC 2 644724.671 942588.372 47 42 47 2037.02 2033.66 51.52 MW-17A CAMA 2/16/2015 Alluvial PVC 2 644122.021 942913.03 7 2 7 2034.81 2032.16 10.07 MW-18BR CAMA 4/23/2015 Bedrock PVC 2 643580.556 943192.704 33 28 33 2035.54 2032.78 35.65 MW-18D CAMA 4/23/2015 Transition Zone PVC 2 643583.294 943186.685 22 17 22 2035.44 2032.49 24.42 MW-18BRL CAMA/DATA GAP 7/1/2016 Bedrock (lower) PVC 2 643616.404 943166.05 110 100 110 2036.06 2032.58 113.47 MW-19BR CAMA 6/13/2015 Bedrock PVC 2 643013.092 943570.759 55 45 55 2036.18 2033.42 58.56 MW-20A CAMA 6/12/2015 Alluvial PVC 2 642458.09 943846.028 8 3 8 2037.38 2034.18 10.68 MW-21D CAMA 6/25/2015 Transition Zone PVC 2 641783.209 944429.867 14 9 14 2044.23 2044.54 NM MW-22BR CAMA 6/24/2015 Bedrock PVC 2 641599.235 944541.539 47 42 47 2048.98 2049.33 NM MW-22D CAMA 6/24/2015 Transition Zone PVC 2 641604.32 944539.421 26.5 16.5 26.5 2049.06 2049.37 NM MW-23BR CAMA 6/27/2015 Bedrock PVC 2 641966.862 945482.88 57.5 47.5 57.5 2106.44 2103.14 61.55 MW-23DL CAMA 6/15/2015 Transition Zone PVC 2 641967.401 945486.766 26.5 21.5 26.5 2106.26 2103.13 29.6 MW-23DU CAMA 6/17/2015 Transition Zone PVC 2 641966.029 945479.96 16.5 6.5 16.5 2106.36 2103.00 19.06 MW-24BR CAMA 5/7/2015 Bedrock PVC 2 645580.3611 950648.8257 68.2 58.2 68.2 2173.03 2170.44 71.03 MW-24S CAMA 5/5/2015 Saprolite PVC 2 645579.3597 950641.3468 38 28 38 2173.44 2170.89 41.24 Previously Installed Wells CB-1 NPDES/CAMA BKGRD 7/13/2010 Saprolite PVC 2 643345.477 946546.0126 59 44 59 2212.91 2210.41 62.02 CB-2 NPDES 7/14/2010 Saprolite PVC 2 642685.1591 945930.7673 28 12 27 2167.79 2167.79 30.25 CB-3 NPDES 8/16/2010 Transition Zone PVC 2 642516.48 945138.56 35 25 35 2133.23 2130.55 38.53 CB-3R NPDES 10/8/2012 Transition Zone PVC 2 642444.2763 945214.0457 35 25 35 2138.97 2135.83 38.59 CB-4 NPDES 7/13/2010 Saprolite PVC 2 642173.37 944539.22 20 10 20 2067.24 2064.77 22.77 CB-4B NPDES 8/17/2010 Bedrock PVC 2 642177.8233 944537.2873 39 28 38 2066.34 2064.04 41.22 CB-5 NPDES 7/12/2010 Alluvial PVC 2 641932.394 944098.641 7 2 7 2040.49 2037.86 9.27 CB-6 NPDES 7/12/2010 Alluvial PVC 2 643018.5346 943602.5124 6.5 1.5 6.5 2035.48 2032.46 9.73 CB-7 NPDES 7/12/2010 Alluvial PVC 2 643584.343 943192.079 9 4 9 2034.72 2032.00 11.49 CB-8 NPDES 8/17/2010 Bedrock PVC 2 645101.5645 943051.2785 57 47 57 2145.19 2142.49 60.9 CB-9 NPDES/CAMA BKGRD 10/8/2012 Saprolite PVC 2 645590.5 944231.165 62 52 62 2182.08 2178.86 65.6 GW-1 NPDES 8/6/2007 Saprolite PVC 2 644238.8406 946531.794 24 14 24 2181.16 2171.70 26.6 GW-2 UNK 8/7/2007 Bedrock PVC 2 644159.6 943456.3 44.5 29.5 44.5 2094.20 2092.20 47.18 GW-3 UNK 8/7/2007 Saprolite PVC 2 643613.6 943710.2 17 7 17 2071.10 2069.10 19.68 GW-4 UNK 8/6/2007 Transition Zone PVC 2 642665 944495.4 24 14 24 2084.40 2082.50 25.9 GW-53 UNK 8/7/2007 Transition Zone PVC 2 642527.4 945181.5 30 20 30 2138.40 2136.40 32.37 MW-10 CAMA BKGRD 2/24/2014 Alluvial PVC 2 641997.91 948045.12 8 3 8 2171.20 2167.82 11.65 MW-11 CAMA 2/24/2014 Alluvial PVC 2 646195.8 942195.91 8 3 8 2035.00 2031.72 11.36 P-100 UNK 12/4/2014 Saprolite PVC 2 642810.189 944985.522 100.3 80.2 99.9 2164.55 2164.55 101.35 P-101 UNK 12/4/2014 Saprolite PVC 2 642913.542 944784.735 97.4 77.4 97 2164.71 2164.71 98.8 P-102 UNK 11/25/2015 Saprolite PVC 2 643547.213 944773.538 52.8 42.8 52.4 2165.28 2165.28 52.6 P-103 UNK 11/25/2014 Saprolite PVC 2 643790.3 944960.145 54.1 44.1 53.7 2163.90 2163.90 54.15 P-104 UNK 11/26/2014 Saprolite PVC 2 644847.977 943912.409 54.5 44.5 54.1 2174.26 2174.26 54.8 P-105 UNK 11/26/2014 Saprolite PVC 2 645029.624 943789.91 48.3 38.3 47.9 2174.17 2174.17 48.6 PZ-16 UNK 10/18/2006 Transition Zone PVC 2 643153.6 944361.2 52 42 52 2167.00 2164.20 54.55 PZ-17D UNK 10/19/2006 Bedrock PVC 2 643136.2 944195.8 79 69 79 2149.20 2147.40 82.1 PZ-17S UNK 10/19/2006 Bedrock PVC 2 643132.8 944189.8 37 27 37 2148.80 2146.70 40.09 PZ-19 UNK 10/16/2006 Saprolite PVC 2 642899.7 944420.9 24 9 24 2105.40 2102.50 27.05 PZ-22 UNK 10/18/2006 Saprolite PVC 2 642575.4 944801.9 10 5 10 2062.60 2063.00 9.17 PZ-23 UNK 10/23/2006 Saprolite PVC 2 642717 945935.5 29.5 19.5 29.5 2167.70 2164.70 32.28 P:\Duke Energy Progress. 1026\102. Asheville Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 1-1 Well Construction Data Page 2 of 3 TABLE 1-1 WELL CONSTRUCTION DETAILS ASHEVILLE STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, ARDEN, NC Identification Program Date Installed Monitoring Zone Material Diameter (inches) Northing (ft) Easting (ft) Total Well Depth' (Feet BGS) Screened Interval (Feet BGS) Measuring Point TOC Elevation (Feet MSL) Ground Surface Elevation (Feet MSL) Measured Well Depth (Feet TOC) PZ-24 UNK 10/20/2006 Saprolite PVC 2 642771.9 946416.7 33 23 33 2166.20 2162.90 33.98 PZ-26 UNK 10/24/2006 Saprolite PVC 2 643980.9 946109.2 28 18 28 2168.30 2165.70 29.85 PZ-27 UNK 10/24/2006 Saprolite PVC 2 643832.4 944243.2 60 50 60 2157.00 2153.90 NM AMW-1B UNK 6/24/2014 Bedrock PVC 2 641961.0498 944768.2511 64 54 64 2083.58 2080.53 NM AMW-2A UNK 6/26/2014 Transition Zone PVC 2 642100.6435 945131.5577 30 20 30 2107.93 2104.95 NM AMW-2B UNK 6/26/2014 Bedrock PVC 6 642095.0435 945124.9565 94 OB OB 2107.45 2104.09 NM AMW-3A UNK 7/7/2014 Saprolite PVC 2 641987.4145 948032.1855 72 62 72 2173.37 2169.87 NM AMW-3B CAMA BKGRD 7/7/2014 Bedrock PVC 2 641985.9787 948035.6561 98 88 98 2173.00 2169.62 NM APD-1 UNK UNK Saprolite PVC 2 643664.181 943691.705 NM NA NA 2060.22 NA NM APD-7 UNK UNK Saprolite PVC 2 644738.779 943971.131 NM NA NA 2157.01 NA 37.75 APZ-30 UNK 6/20/2014 Bedrock PVC 6 642200.8 944983.63 218 OB OB 2103.50 2100.31 NM B-1 UNK 6/20/2014 UNK UNK UNK 644207.664 943620.697 NM NM NM 2126.64 2123.73 48.66 B-1-A UNK 6/20/2014 UNK UNK UNK 644209.915 943618.451 NM NM NM 2126.67 2123.36 30.45 B-2 UNK 6/20/2014 UNK UNK UNK 644385.422 943539.606 NM NM NM 2126.40 2123.67 41.6 DP-1 UNK UNK Saprolite PVC 2 644598.121 944155.982 20.73 NM NM 2144.35 NM 20.73 Private Water Supply Wells AS-3 NA UNK Bedrock PVC 6 641518.484 944483.491 121.5 OB OB NM NM NM AS-4 NA UNK Bedrock PVC 6 641518.484 944483.491 180 OB OB NM NM NM DW-4B NA UNK Bedrock PVC 6 641518.484 944483.491 NM OB OB NM NM NM AS-6 NA UNK Bedrock Steel 6 641219.278 944646.615 140.5 OB OB NM NM NM DW-6 NA UNK Bedrock Steel 6 640550.734 944953.816 161.5 OB OB NM NM NM DW-7 NA UNK Bedrock Steel 6 639935.005 944915.272 102 OB OB NM NM NM AS-9 NA UNK Bedrock PVC 6.2 643654.3000 941346.7170 280.7 OB OB 2068.95 2076.51 NM AS-11 NA UNK Bedrock PVC 6.2 641703.5415 942988.9811 798.5 OB OB 2130.89 2129.92 NM AS-13 NA UNK Bedrock PVC 6.1 641817.0340 942860.9997 543.5 OB OB 2148.68 2147.48 NM AS-14 NA UNK Bedrock Steel 5.9 640755.9531 943491.7351 340.3 OB OB 2133.90 2133.62 NM AS-20 NA UNK Bedrock Steel 6 NM NM 221.9 OB OB NM NM NM Stream Staff Gauges A-01 NA 3/1/2016 Surface Water NA NA 645318.846 942407.653 NA NA NA 2029.691 2026.911 NA A-02 NA 3/1/2016 Surface Water NA NA 645312.758 942475.959 NA NA NA 2031.514 2028.570 NA B-01 NA 3/1/2016 Surface Water NA NA 644390.654 942800.472 NA NA NA 2031.833 2028.783 NA C-01 NA 3/1/2016 Surface Water NA NA 643437.769 943272.879 NA NA NA 2030.162 2026.702 NA C-02 NA 3/1/2016 Surface Water NA NA 643720.895 943604.788 NA NA NA 2045.031 2042.100 NA D-01 NA 3/1/2016 Surface Water NA NA 643421.623 943316.994 NA NA NA 2031.024 2027.527 NA MH-17 NA 3/1/2016 Surface Water NA NA 644087.391 942929.650 NA NA NA 2034.365 2031.540 NA N-01 NA 3/1/2016 Surface Water NA NA 646381.850 942827.050 NA NA NA 2031.695 2028.402 NA PW-F NA 3/1/2016 Surface Water NA NA 643879.124 943050.313 NA NA NA 2032.374 2029.395 NA SD-01 NA 3/1/2016 Surface Water NA NA 646408.893 942682.038 NA NA NA 2033.724 2030.502 NA Prepared by: BOW Checked by: TDP Notes: BGS - Below ground surface NF - No Flow OB = Open borehole TOC - Top of casing NM - Not Measured MSL - Mean sea level NA= Not Applicable PVC- Polyvinyl chloride UNK - Data not known "'Total Well Depth" is the depth to the bottom of the screened interval, as measured during well installation. Well depths measured by SynTerra, 2015. 3Total soil boring depth as reported on the monitoring well construction logs. Red text indicates an abandoned well. P:\Duke Energy Progress. 1026\102. Asheville Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 1-1 Well Construction Data Page 3 of 3 TABLE 1-2 ALLUVIAL GROUNDWATER EXCEEDANCES ASHEVILLE STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, ARDEN, NC Analytical Parameter pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Boron Cadmium Chloride Chromium (VI) Chromium (VI) Speciation Cobalt Iron Manganese Selenium Sodium Strontium Sulfate Thallium Total Dissolved Solids Vanadium Zinc Reporting Units S.U. ft Deg C umhos/cm mg/L mV mV NTUs mg/L ug/L ug/L mg/L ug/L ug/L ug/L ug/L ug/L ug/L mg/L ug/L mg/L ug/L mg/L ug/L ug/L 15A NCAC 02L Standard 6.5-8.5 NE NE NE NE NE NE NE NE 700 2 250 0.07A 0.07A 1* 300 50 20 NE NE 250 0.2* 500 0.3* 1000 Sample ID Sample Collection Date Field Parameters Analytical Results Background VW-10 03/05/2014 5.4 5.72 10 72 5.94 226 NM 2.9 NM <50 <1 4.4 NA NA 3.18 207 187 <1 NA NA 0.63 <0.2 55 NA 29 VW-10 04/17/2014 5.0 5.64 12 68 0.3 182 NM 2.9 NM <50 <1 8.3 NA NA NA 1040 573 <1 NA NA 0.41 <0.2 48 NA 17 MW-10 07/23/2014 4.6 5.70 19 67 0.38 244 NM 0.93 NM <50 <1 8.4 NA NA <5 598 363 <1 3.3 NA 0.58 <0.2 44 NA 15 VW-10 11/04/2014 NM NM NM NM NM NM NM NM NM NA <1 NA NA NA 6.11 675 555 <1 3.27 NA NA <0.2 NA NA 17 VW-10 05/12/2015 5.0 5.58 16 64 0.96 47 252 4.09 <0.5 <50 <1 8.9 NA NA 4.29 369 340 <1 4.02 24 0.3 <0.2 44 <0.3 85 MW-10 12/08/2015 5.4 5.79 14 74 0.4 27 232 0.69 0 <50 <0.08 12.6 0.14 NA 3.6 64 200 <0.5 5.09 24 <1 0.13 91 <1 12 VW-10 01/19/2016 5.1 5.62 8 72 0.53 481 686 0.71 0 <50 <1 14 0.17 M1 NA 2.99 63 185 <1 4.85 25 0.29 <0.2 40 <0.3 15 VW-10 04/12/2016 5.1 5.69 13 67 0.37 141 346 1.82 NM <50 <1 12 0.12 NA 2.12 54 B2 142 <1 4.15 24 0.43 <0.2 46 <0.3 14 VW-10 07/08/2016 4.6 5.74 23 70 1.71 S 359 564 6.97 NM <50 <1 15 0.14 NA 2.95 31 175 <1 5.64 26 0.3 <0.2 53 <0.3 17 Alluvial CB-5 11/18/2010 NM 3.61 14 210 NM NM NM 6.46 NM 283 <0.08 23.3 NA NA NA 24100 415 <10 NA NA 31.5 <0.1 163 NA <10 CB-5 04/12/2011 5.8 3.63 12 235 0.67 -119 86 3.24 NM 169 <0.08 35.4 NA NA NA 22700 424 <10 NA NA 19.9 <0.1 112 NA <10 CB-5 07/14/2011 5.8 3.94 21 268 0.54 -95 111 2.36 NM 295 <0.08 32.3 B NA NA NA 23600 397 <10 NA NA 21 B <0.1 152 B NA <10 CB-5 11/08/2011 5.8 3.58 14 252 1.29 -122 84 9.27 NM 296 <0.08 28 NA NA NA 17400 395 <10 NA NA 25.9 <0.1 165 NA <10 CB-5 04/11/2012 5.9 3.56 13 232 0.55 -87 119 8.49 NM 130 <0.08 25.9 NA NA NA 19300 391 <10 NA NA 11.5 <0.1 134 NA <10 CB-5 07/17/2012 5.9 3.76 20 241 0.57 -16 189 7.97 NM 265 <0.08 26.5 NA NA NA 20200 329 <10 NA NA 17.1 <0.1 141 NA <10 CB-5 11/16/2012 6.0 3.51 13 203 2.48 97 302 3.08 NM 241 <0.08 26.1 NA NA NA 13800 295 <10 NA NA 6.9 <0.1 123 NA <10 CB-5 04/04/2013 5.8 3.33 8 203 2.03 58 263 3.04 NM 149 <1 18 NA NA NA 13400 283 <1 NA NA 6.2 <0.2 130 NA <5 CB-5 07/02/2013 5.6 3.40 18 215 0.46 -119 86 2.61 NM 176 <1 15 NA NA NA 18500 341 <1 NA NA 2.6 1 <0.2 140 NA <5 CB-5 11/06/2013 5.9 3.72 16 196 0.27 10 215 3.2 NM 186 <1 16 NA NA NA 20400 382 <1 NA NA 5.3 <0.2 120 NA <5 CB-5 04/17/2014 6.0 3.57 12 202 0.3 20 225 5.1 NM 117 <1 16 NA NA NA 21300 466 <1 NA NA 9.2 <0.2 140 NA <5 CB-5 07/10/2014 6.1 3.40 19 237 0.54 -12 193 5.5 NM 182 <1 22 NA NA NA 27400 438 <1 NA NA 3 <0.2 150 NA <5 CB-5 07/24/2014 5.9 9.55 19 226 0.24 -14 NM 7.15 NM 190 <1 21 NA NA <5 24100 434 <1 16 NA 1.4 <0.2 150 NA <5 CB-5 11/04/2014 5.9 3.73 16 255 0.4 15 220 15.3 NM 214 <1 23 NA NA NA 24700 476 <1 NA NA 17 <0.2 150 NA 6 CB-5 04/06/2015 6.7 3.66 12 216 0.51 -29 176 9.16 NM 142 <1 22 NA NA <1 19600 594 <1 15.9 NA 15 0.239 150 NA <5 CB-5 07/09/2015 6.0 5.05 19 230 0.95 -88 117 3.99 NM 209 <1 27 NA NA <1 25400 488 <1 17.4 33 8.9 <0.2 150 0.855 <5 CB-5 11/03/2015 6.1 3.49 17 302 1.27 16 221 4.83 NM 303 <1 22 NA NA <1 29800 761 <1 24.9 55 83 <0.2 180 0.381 <5 CB-5 12/09/2015 5.6 3.55 12 261 3.22 101 306 3.18 4 230 <0.08 22.2 <0.03 NA 0.84 23200 640 <0.5 21.8 50 58 <0.1 178 <1 <10 CB-5 01/18/2016 6.0 3.51 9 273 0.82 30 235 2.18 3 186 <1 22 <0.03 NA <1 26900 625 <1 18.7 42 48 <0.2 130 0.461 <5 CB-5 04/06/2016 6.0 3.61 13 243 1.3 95 300 1.56 NM 152 <1 26 NA NA <1 19400 551 <1 17.1 41 36 <0.2 160 0.385 <5 CB-5 07/07/2016 5.5 4.21 18 290 0.38 40 245 5.42 NM 246 NA 31 NA NA <1 24100 546 1 <1 21.3 43 43 <0.2 160 0.473 <5 CB-6 11/18/2010 NM 3.53 13 689 NM NM NM 3.99 NM 918 <0.08 38.9 NA NA NA 1 24600 3430 <10 NA NA 378 1 <0.1 642 NA <10 CB-6 04/12/2011 5.4 3.44 13 1247 0.71 -105 100 2.92 NM 758 <0.08 40 NA NA NA 32700 5060 <10 NA NA 715 <0.1 1070 NA <10 CB-6 DUP 04/12/2011 5.4 3.44 13 1247 0.71 -105 100 2.92 NM 706 <0.08 41.9 NA NA NA 32900 5080 <10 NA NA 694 <0.1 1050 NA <10 CB-6 07/14/2011 5.6 3.37 21 1090 1.21 -46 159 2.12 NM 918 <0.08 65.4 NA NA NA 37600 4720 <10 NA NA 428 <0.1 789 NA 14.1 CB-6 11/08/2011 5.5 3.26 14 930 2.42 -60 145 6.59 NM 985 <0.08 55.3 NA NA NA 28300 7080 1 <10 NA NA 353 <0.1 686 NA <10 CB-6 04/10/2012 5.6 3.06 15 737 1.77 -62 143 3.05 NM 758 <0.08 42.4 NA NA NA 17500 4250 <10 NA NA 304 1 <0.1 621 NA <10 CB-6 07/17/2012 5.7 2.72 21 604 1.39 80 285 6.65 NM 759 0.11 22.5 NA NA NA 10400 2050 <10 NA NA 174 <0.1 346 NA <10 CB-6 11/16/2012 5.2 2.68 11 602 3.96 255 460 9.55 NM 702 0.14 21.9 NA NA NA 3410 3060 <10 NA NA 207 <0.1 406 NA <10 CB-6 04/04/2013 5.8 2.68 9 429 1.29 57 262 6.42 NM 639 <1 13 NA NA NA 7720 1660 <1 NA NA 140 <0.2 250 NA <5 CB-6 07/02/2013 5.5 2.74 20 407 1.63 -15 190 4.9 NM 865 <1 11 NA NA NA 1 7250 1500 <1 NA NA 110 <0.2 240 NA 6 P:\Duke Energy Progress.1026\102. Asheville Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 1-2 Alluvial GW Exceedances Page 1 of 3 TABLE 1-2 ALLUVIAL GROUNDWATER EXCEEDANCES ASHEVILLE STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, ARDEN, NC Analytical Parameter pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Boron Cadmium Chloride Chromium (VI) Chromium (VI) Speciation Cobalt Iron Manganese Selenium Sodium Strontium Sulfate Thallium Total Dissolved Solids Vanadium Zinc Reporting Units S.U. ft Deg C umhos/cm mg/L mV mV NTUs mg/L ug/L ug/L mg/L ug/L ug/L ug/L ug/L ug/L ug/L mg/L ug/L mg/L ug/L mg/L ug/L ug/L 15A NCAC 02L Standard 6.5-8.5 NE NE NE NE NE NE NE NE 700 2 250 0.07A 0.07A 1* 300 50 20 NE NE 250 0.2* 500 0.3* 1000 Sample ID Sample Collection Date Field Parameters Analytical Results CB-6 11/06/2013 6.0 3.35 16 343 2.1 49 254 8.8 NM 781 <1 13 NA NA NA 5610 1630 <1 NA NA 100 <0.2 210 NA <5 CB-6 04/17/2014 6.0 4.25 11 511 1 151 356 5.8 NM 629 <1 29 NA NA NA 15400 2690 <1 NA NA 190 <0.2 360 NA <5 CB-6 07/10/2014 5.9 3.32 19 607 0.4 40 245 5.3 NM 827 <1 63 NA NA NA 18100 2620 <1 NA NA 160 <0.2 400 NA <5 CB-6 07/24/2014 5.9 3.54 18 604 0.45 8 NM 9.02 NM 837 <1 61 NA NA <5 18000 2640 <1 28.2 NA 160 <0.2 390 NA <5 CB-6 11/04/2014 5.9 3.63 14 582 1.48 83 288 5.78 NM 806 <1 43 NA NA NA 14600 3010 <1 NA NA 210 1 <0.2 400 NA <5 CB-6 DUP 11/04/2014 5.9 3.63 14 582 1.48 83 288 5.78 NM 808 <1 41 NA NA NA 16000 3110 <1 NA NA 220 <0.2 410 NA <5 CB-6 04/06/2015 6.0 3.48 11 525 1.3 36 241 8.53 NM 609 <1 37 NA NA 1.42 14600 3330 <1 23.2 NA 170 <0.2 360 NA <5 CB-6 07/08/2015 5.9 4.94 24 745 0.6 -93 112 4.19 NM 807 <1 150 NA NA 2.21 22000 3950 <1 37.4 409 110 <0.2 520 <0.3 <5 CB-6 11/04/2015 3.4 3.27 16 1739 1.39 258 463 1.5 NM 802 <1 66 NA NA 67.3 22100 21800 1.21 54.1 B2 1400 930 <0.2 1300 <0.3 7 CB-6 12/08/2015 3.5 3.46 9 1552 1.8 438 643 2.78 3.5 700 0.49 66.3 <0.03 NA 45.5 16400 18300 1 47.1 1100 870 0.11 1250 <1 34 CB-6 01/21/2016 3.6 3.38 8 1215 3.7 214 419 2.27 1.25 599 <1 55 <0.03 NA 23.6 16600 14300 <1 41 911 590 <0.2 910 <0.3 18 CB-6 04/06/2016 3.7 3.23 11 1139 0.79 443 648 3.13 NM 576 <1 54 NA NA 21.5 19000 13500 <1 40.2 808 590 <0.2 820 <0.3 18 CB-6 07/07/2016 4.7 5.31 22 1122 0.56 243 448 3.41 NM 780 NA 49 NA NA 11.1 25400 10300 <1 51.7 746 580 <0.2 840 <0.3 1 7 CB-7 11/18/2010 NM 8.06 15 419 NM NM NM 0 NM 259 0.22 121 NA NA NA 342 236 <10 NA NA 53.5 <0.1 319 NA <10 CB-7 11/08/2011 5.5 7.95 16 643 4.8 -52 153 1.19 NM 282 0.14 159 NA NA NA 65.3 95.5 <10 NA NA 49.6 1 <0.1 372 NA <10 CB-7 07/17/2012 5.4 7.74 20 538 0.99 203 408 0.71 NM 270 <0.08 152 NA NA NA <50 130 <10 NA NA 66.9 <0.1 311 NA <10 CB-7 11/06/2013 5.7 8.03 17 384 3.2 62 267 7 NM 240 <1 68 NA NA NA 816 47 1.92 NA NA 42 <0.2 210 NA <5 CB-7 04/06/2015 5.9 7.73 11 456 6.2 65 270 0.78 NM 233 <1 95 NA NA <1 <10 <5 21.3 23.1 NA 36 <0.2 310 NA <5 CB-7 07/08/2015 5.8 8.65 21 276 4.45 66 271 1.13 NM 263 <1 36 NA NA <1 <10 <5 14.6 19.9 172 56 <0.2 190 0.574 <5 CB-7 11/02/2015 5.2 5.53 17 247 4.7 500 705 1.5 NM 66 <1 41 NA NA <1 20 5 23.2 7.57 225 21 1 <0.2 180 0.337 <5 CB-7 12/08/2015 5.8 5.82 12 306 2 274 479 1.5 0 88 <0.08 67.1 <0.03 NA 0.58 <50 14 11.3 10.9 320 25.3 <0.1 242 <1 38 CB-7 01/19/2016 5.9 5.79 6 322 1.7 156 361 1.5 0 121 <1 65 <0.03 NA <1 44 14 8.13 14 318 31 <0.2 200 <0.3 86 CB-7 04/06/2016 5.6 7.06 11 727 1.95 296 501 1.21 NM 213 <1 190 NA NA <1 66 40 3.86 49.8 598 31 <0.2 440 <0.3 <5 CB-7 07/07/2016 5.5 8.95 19 670 0.33 313 518 2.16 NM 272 NA 150 NA NA 1.25 86 175 <1 46.1 457 37 <0.2 460 0.372 <5 VW-11 03/05/2014 5.7 7.77 9 365 6.87 211 NM 0.8 NM <50 <1 73 NA NA 2.99 78 221 <1 NA NA 27 1 <0.2 240 NA 20 MW-11 04/17/2014 5.3 7.35 11 342 3.2 244 NM 0.5 NM <50 <1 80 NA NA NA <10 577 <1 NA NA 19 <0.2 210 NA 10000 VW-11 05/20/2015 5.0 8.61 16 346 1.98 93 298 1.01 <0.5 <50 <1 73 NA NA 2.14 <10 407 <1 25.8 96 25 <0.2 220 <0.3 <5 VW-11 12/08/2015 5.5 6.35 12 488 3.4 238 443 2.81 0 <50 0.1 121 0.65 NA 2 <50 250 <0.5 39.4 130 24.2 0.12 300 <1 <10 VW-11 01/18/2016 5.6 5.99 2 531 3.2 226 431 0.9 0 <50 <1 120 0.48 NA 1.23 25 239 <1 40.1 137 30 <0.2 280 <0.3 5 VW-11 04/07/2016 5.4 7.92 12 452 1.76 255 460 1.1 NM <50 <1 97 0.41 NA <1 <10 281 <1 38.4 125 28 1 <0.2 220 <0.3 <5 MW-11 07/08/2016 5.4 8.48 18 501 1.11 S 309 514 0.98 0 <50 <1 110 0.26 NA <1 61 113 <1 47 138 30 <0.2 300 <0.3 <5 MW-15A 03/04/2015 5.4 6.23 10 188 2.86 47 252 3.28 0.5 61 <1 43 NA NA 1.25 879 1060 <1 14.8 120 5.3 <0.2 120 <0.3 7 MW-15A 05/20/2015 4.9 7.94 18 167 0.41 151 356 4.73 <0.5 54 <1 34 NA NA <1 217 840 <1 11.7 102 5.3 <0.2 99 <0.3 <5 MW-15A 12/08/2015 5.2 6.11 14 165 1.24 257 462 1.08 0 71 <0.08 39.4 <0.03 NA 0.61 <50 1000 <0.5 13.2 93 5.8 <0.1 <25 <1 <10 MW-15A O1/18/2016 5.1 5.88 5 172 0.7 225 430 0.6 NM 60 <1 43 <0.03 NA <1 43 1000 <1 11.9 100 5.8 1 <0.2 91 <0.3 <5 MW-15A 04/07/2016 5.0 6.89 13 149 0.13 212 417 0.44 NM <50 <1 36 <0.03 NA <1 63 673 <1 11 90 4.8 <0.2 69 <0.3 <5 MW-15A 07/08/2016 4.9 8.17 17 173 0.73 S 340 545 2.49 0 132 <1 41 <0.03 NA <1 125 385 <1 9.87 118 5.1 <0.2 110 0.373 <5 MW-16A 03/11/2015 5.3 9.63 10 400 0.88 35 240 0.63 0.5 303 <1 93 NA NA 1.01 522 1980 <1 14.9 184 33 <0.2 260 <0.3 <5 MW-16A DUP 03/11/2015 5.3 9.63 10 400 0.88 35 240 0.63 0.5 302 <1 92 NA NA 1.1 538 2000 <1 14.7 186 36 <0.2 260 <0.3 <5 MW-16A 05/28/2015 5.0 9.84 15 432 0.51 12 217 3.17 <0.5 354 <1 97 NA NA 1.35 248 1940 <1 17.5 203 33 <0.2 350 <0.3 <5 MW-16A 12/08/2015 5.1 8.46 15 432 0.61 153 358 2.65 0.5 480 <0.08 132 <0.03 NA 1.4 420 1600 <0.5 22.8 240 46.5 <0.1 355 <1 <10 MW-16A O1/18/2016 5.0 8.41 5 598 0.6 268 473 0.5 0 524 <1 140 0.034 NA 1.33 96 1620 <1 22.1 275 59 <0.2 330 <0.3 <5 P:\Duke Energy Progress.1026\102. Asheville Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 1-2 Alluvial GW Exceedances Page 2 of 3 TABLE 1-2 ALLUVIAL GROUNDWATER EXCEEDANCES ASHEVILLE STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, ARDEN, NC Analytical Parameter pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Boron Cadmium Chloride Chromium (VI) Chromium (VI) Speciation Cobalt Iron Manganese Selenium Sodium Strontium Sulfate Thallium Total Dissolved Solids Vanadium Zinc Reporting Units S.U. ft Deg C umhos/cm mg/L mV mV NTUs mg/L ug/L ug/L mg/L ug/L ug/L ug/L ug/L ug/L ug/L mg/L ug/L mg/L ug/L mg/L ug/L ug/L 15A NCAC 02L Standard 6.5-8.5 NE NE NE NE NE NE NE NE 700 2 250 0.07^ 0.07^ 1* 300 50 20 NE NE 250 0.2* 500 0.3* 1000 Sample ID Sample Collection Date Field Parameters Analytical Results MW-16A 04/08/2016 5.0 9.21 11 509 0.25 264 469 0.65 NM 447 <1 100 <0.03 NA 2 53 1560 <1 19.3 240 65 <0.2 310 <0.3 <5 MW-16A 07/08/2016 4.9 10.18 17 480 0.83 S 343 548 2.39 NM 517 <1 100 0.048 NA 1.81 171 1640 <1 19.3 228 69 <0.2 360 <0.3 <5 MW-17A 03/03/2015 6.3 5.28 8 1331 1.24 22 227 9.4 3 1060 <1 330 NA NA 26.3 8970 12800 <1 15.4 507 140 <0.2 1300 0.401 19 MW-17A 05/21/2015 6.2 6.89 24 1573 0.49 -163 42 6.72 6 1540 <1 390 NA NA 25.8 40600 11900 <1 14 536 160 <0.2 1200 2.63 48 MW-17A 12/09/2015 5.7 5.77 3 1531 2.8 255 460 6.82 NM 2000 <0.08 403 <0.03 NA 22.6 29500 6700 <0.5 14.8 560 144 <0.1 1100 <1 <0.1 B MW-17A 01/19/2016 5.7 5.52 1 1612 0.6 98 303 8.7 2 1940 <1 410 <0.03 NA 22.4 24200 6420 <1 14.1 602 170 <0.2 1100 <0.3 8 MW-17A 04/11/2016 5.8 6.29 12 1688 0.23 69 274 7.27 NM 1980 <1 410 <0.03 NA 22.4 30000 5900 <1 14.9 625 190 <0.2 NA 1.17 6 MW-17A 04/12/2016 5.8 6.29 12 1688 0.23 69 274 7.27 NM NA NA NA NA NA NA NA NA NA NA NA NA NA 1200 NA NA MW-17A 07/12/2016 5.7 6.65 20 1704 0.35 184 389 5.08 NM 2470 NA 430 <0.03 NA 17 35500 5040 <1 14.8 648 190 <0.2 1300 <0.3 <5 MW-20A 06/24/2015 6.0 4.98 21 707 0.68 -93 112 2.43 NM 641 2.01 23 NA NA 16.4 16300 15800 1.18 17.5 548 220 <0.2 480 0.328 10 MW-20A 09/03/2015 6.0 6.66 20 506 0.73 91 296 3.94 1.5 727 <1 24 NA <0.006 <1 3180 10400 <1 18 M4 352 78 <0.2 330 0.458 <5 MW-20A 12/09/2015 5.5 5.02 13 433 1 101 306 8.13 3 630 2.7 16.5 <0.03 NA 37.7 7600 5400 3.5 13.7 310 186 <0.1 294 <1 L3 <10 MW-20A 01/21/2016 5.7 5.14 9 385 1 -186 19 9.73 0.5 625 1.57 13 <0.03 NA 33.8 7110 4610 1.19 12.4 269 180 <0.2 300 <0.3 8 MW-20A 04/13/2016 5.7 3.05 13 464 0.28 89 294 9.45 NM 751 <1 16 <0.03 NA 28.1 6270 8030 <1 14.9 339 190 0.201 320 <0.3 11 Water Supply Wells AS-3 02/06/2014 5.4 3.44 10 222 4.8 342 NM 1.03 NM <50 NA NA NA NA NA 20 36 NA NA NA NA <0.2 NA NA NA AS-3 (Duke) 03/04/2015 NM NM NM NM NM NM NM NM NM <50 <1 59 NA NA 1.03 117 45 <1 28.2 78 14 <0.2 160 <0.3 31 AS-3(Vendor) 03/04/2015 5.0 NM 15 214 4.8 NM NM <1 NM <500 <1 61 <10 NA 1 90 39 <1 29 73 12 <1 140 <5 25 AS-3 02/11/2016 5.0 3.92 11 256 3.44 306 511 2.76 NM <50 <1 60 0.38 NA <1 369 38 <1 27.9 75 12 <0.2 150 <0.3 <5 Notes: Q - Bold highlighted concentration indicates exceedance of the 15A NCAC 02L Standard, Appendix 2, April 1, 2013. Deg C = Degrees Celsius mV = Millivolts mg/L = Milligram per liter ORP = Oxidation Reduction Potential DO = Dissolved oxygen DUP = Duplicate NA = Not analyzed ug/L = Microgram per liter umhos/cm = Micro mhos per centimeter NE = Not established S.U. = Standard Unit Temp = Temperature Spec Cord = Specific Conductance NTU = Nephelometric turbidity unit ft = Feet < = Concentration not detected at or above the reporting limit * = Interim Maximum Allowable Concentrations (IMACs) of the 15A NCAC 02L Standard, Appendix 1, April 1, 2013. B = Target analyte detected in method blank at or above the reporting limit. Target analyte concentration in sample is less than 10x the concentration in the method blank. B2 = Target analyte was detected in blank(s) at a concentration greater than 1/2 the reporting limit but less than the reporting limit. Analyte concentration in sample is valid and may be used for compliance purposes. L3 = Analyte recovery in the laboratory control sample (LCS) exceeded QC limits. Analyte presence below reporting limits in associated samples. Results unaffected by high bias. M1 = Matrix Spike Recovery exceeded QC limits. Batch accepted based on laboratory control sample (LCS) recovery M4 = The spike recovery value was unusable since the analyte concentration in the sample was disproportionate to the spike level. S = Associated calibration check did not meet specified criteria. = NC DHHS Health Screening Level. NM = Not measured Eh = Redox Potential Prepared by: BER Checked by: TOP P:\Duke Energy Progress.1026\102. Asheville Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 1-2 Alluvial GW Exceedances Page 3 of 3 TABLE 1-3 SAPROLITE GROUNDWATER EXCEEDANCES ASHEVILLE STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, ARDEN, NC Analytical Parameter PH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Beryllium Boron Cadmium Chloride Chromium (VI) Chromium (VI) Speci ati on Chromium Cobalt Iron Lead Manganese Nickel Nitrate Selenium Sodium Strontium Sulfate Thallium Total Dissolved Solids Vanadium Reporting Units S.U. ft Deg C umhos/cm mg/L mV mV NTUs mg/L ug/L ug/L ug/L ug/L ug/L mg/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L mg/L ug/L mg/L ug/L mg/L ug/L mg/L ug/L 15A NCAC 02L Standard 6.5-8.5 NE NE NE NE NE NE NE NE 1* 10 4* 700 2 250 0.07^ 0.07A 10 1* 300 15 50 100 10 20 NE NE 250 0.2* 500 0.3* Sample ID Sample Collection Date Field Parameters Analytical Results Background AMW-3A 11/04/2014 NM NM NM NM NM NM NM NM NM <1 <1 <1 NA <1 NA NA NA 12.4 <1 153 <1 22 <1 NA <1 6.54 NA NA <0.2 NA NA AMW-3A 05/12/2015 12.1 8.17 15 2350 5.41 -189 16 1.5 <0.5 <1 <1 <1 <50 <1 1.1 NA NA <1 <1 <10 <1 <5 <1 NA <1 7.7 1220 0.34 <0.2 500 8.98 CB-1 11/17/2010 4.6 47.73 14 15 NM NM NM 9.16 NM <0.5 <5 NA <50 <0.08 <5 NA NA <5 NA 1160 <5 46.3 <5 0.51 <10 NA NA <5 <0.1 <25 NA CB-1 04/12/2011 4.4 48.20 17 18 7.57 126 331 4.81 NM <0.5 <5 NA <50 <0.08 <5 NA NA <5 NA 589 <5 36.3 <5 0.43 <10 NA NA <5 <0.1 <25 NA CB-1 07/19/2011 4.8 48.40 22 17 7.16 -4 201 17.6 NM <0.5 <5 NA 51.1 <0.08 <5 NA NA 81.5 NA 1330 <5 43 53 B 0.43 <10 NA NA <5 <0.1 <25 NA CB-1 11/09/2011 5.4 50.47 12 19 8.36 -86 119 20.9 NM <0.5 6.7 NA <50 <0.08 <5 NA NA 8.7 NA 17800 6 293 12 0.42 <10 NA NA <5 <0.1 93 NA CB-1 04/10/2012 4.8 49.75 15 16 9.67 1 -44 161 8.11 NM <0.5 <5 NA <50 <0.08 <5 NA NA <5 NA 276 <5 28.4 <5 0.41 <10 NA NA <5 <0.1 <25 NA CB-1 07/16/2012 4.6 49.09 16 20 8.65 317 522 3.65 NM <0.5 <5 NA <50 <0.08 1.6 NA NA <5 NA 179 <5 26.8 <5 0.42 <10 NA NA <2 <0.1 <25 NA CB-1 11/15/2012 4.9 50.89 16 18 7.82 335 540 7.86 NM <0.5 <5 NA <50 <0.08 1.4 NA NA <5 NA 218 <5 28.5 <5 0.36 <10 NA NA <2 <0.1 <25 NA CB-1 04/03/2013 4.5 49.47 15 20 7.89 135 340 4.78 NM <1 <1 NA <50 <1 1.5 NA NA 15 NA 98 <1 27 10 0.43 <1 NA NA <0.1 <0.2 <10 NA CB-1 07/01/2013 5.3 44.71 16 24 8.75 60 265 9.2 NM <1 <1 NA <50 <1 1.7 NA NA <5 NA 2870 <1 67 <5 0.42 1.22 NA NA <0.1 <0.2 <25 NA CB-1 11/05/2013 4.5 43.93 15 18 9.4 413 618 12 NM <1 <1 NA <50 <1 1.6 NA NA <5 NA 664 <1 33 <5 0.42 <1 NA NA 0.15 <0.2 <25 NA CB-1 04/16/2014 4.4 46.05 15 17 8.3 410 615 2.8 NM <1 <1 NA <50 <1 1.7 NA NA <5 NA 152 <1 24 <5 0.42 <1 NA NA 0.18 <0.2 <25 NA CB-1 07/09/2014 4.6 46.41 16 18 8.67 387 592 3.6 NM <1 <1 NA <50 <1 1.7 NA NA <5 NA 215 <1 26 <5 0.45 <1 NA NA 0.12 <0.2 <25 NA CB-1 11/03/2014 4.5 48.24 16 22 7.53 352 557 7.09 NM <1 <1 NA <50 <1 1.7 NA NA <5 NA 175 <1 25 <5 0.4 <1 NA NA 0.17 <0.2 <25 NA CB-1 04/07/2015 4.9 45.50 15 17 8.68 136 341 6.74 NM <1 <1 <1 <50 <1 1.6 NA NA <5 1.94 279 <1 26 <5 0.42 <1 1.04 NA 0.36 <0.2 31 NA CB-1 07/06/2015 4.7 49.12 16 20 8.34 161 366 3.82 NM <1 <1 <1 <50 <1 1.7 NA NA <5 1.95 86 <1 25 <5 1.8 <1 0.993 <5 0.61 <0.2 <25 <0.3 CB-1 11/03/2015 5.1 50.73 16 15 7.9 525 730 21 NM <1 <1 <1 <50 <1 1.2 NA NA 5 4.11 4040 <1 91 <5 1.3 <1 0.893 B2 <5 0.4 <0.2 <25 3.03 CB-1 DUP 11/03/2015 5.1 50.73 16 15 7.9 525 730 21 NM <1 <1 <1 <50 <1 1.2 NA NA <5 4.18 4560 <1 98 6 1.3 <1 0.894 <5 0.54 <0.2 <25 3.21 CB-1 12/08/2015 5.1 50.76 15 15 6.4 69 274 8.8 0 <0.5 <0.5 <0.2 <50 <0.08 1.6 0.031 NA 0.78 1.9 290 <0.1 27 1.4 NA <0.5 <5 <5 <1 <0.1 33 <1 CB-1 01/20/2016 4.9 48.27 10 16 8.32 220 425 7.81 0 <1 <1 <1 <50 <1 2.2 <0.03 NA <1 2.1 279 <1 28 1.53 NA <1 1.03 <5 <0.1 <0.2 <25 <0.3 CB-1 04/07/2016 4.9 44.14 14 17 8.22 329 534 9.74 NM <1 <1 <1 <50 <1 2 <0.03 NA <5 2.36 532 <1 31 <5 1.8 <1 1.17 <5 0.35 <0.2 <25 <0.3 CB-1 07/05/2016 4.8 47.44 23 17 5.44 360 565 8.95 NM <1 <1 <1 <50 <1 1.9 <0.03 NA <5 2.39 595 <1 32 <5 1.8 <1 1.05 <5 0.23 <0.2 <25 0.537 CB-1 DUP 07/05/2016 4.8 47.44 23 17 5.44 360 565 8.95 NM <1 <1 <1 <50 <1 NA NA NA <1 2.32 492 <1 32 1.36 NA <1 NA <5 NA <0.2 NA 0.397 CB-9 11/15/2012 5.0 37.78 15 46 1.66 399 604 8.42 NM <0.5 <5 NA <50 <0.08 6.8 NA NA <5 NA 2880 <5 105 <5 0.38 <10 NA NA <2 0.12 <25 NA CB-9 04/03/2013 4.9 37.18 15 40 7.8 112 317 2.01 NM <1 <1 NA <50 <1 6.5 NA NA <5 NA 370 <1 67 <5 0.33 <1 NA NA 0.2 <0.2 42 NA CB-9 07/01/2013 5.3 34.74 16 48 1.9 38 243 8.43 NM <1 <1 NA <50 <1 6.4 NA NA 6 NA 2080 <1 92 6 0.33 1.12 NA NA 0.11 <0.2 26 NA CB-9 11/05/2013 4.7 35.72 15 38 2.8 378 583 8.7 NM <1 <1 NA <50 <1 6.8 NA NA <5 NA 883 <1 60 <5 0.34 <1 NA NA 0.21 <0.2 28 NA CB-9 04/16/2014 4.8 36.13 15 38 2.2 347 552 3.5 NM <1 <1 NA <50 <1 6.9 NA NA <5 NA 248 <1 39 <5 0.33 <1 NA NA 0.13 <0.2 <25 NA CB-9 07/09/2014 4.8 35.89 16 38 2.59 353 558 5.3 NM <1 <1 NA <50 <1 6.8 NA NA <5 NA 531 <1 47 <5 0.35 <1 NA NA 0.12 <0.2 28 NA CB-9 11/03/2014 4.9 37.18 15 47 2.01 228 433 8.34 NM <1 <1 NA <50 <1 6.9 NA NA <5 NA 341 <1 41 <5 0.29 <1 NA NA 0.14 <0.2 26 NA CB-9 04/07/2015 5.0 37.29 16 38 2.24 114 319 8.79 NM <1 <1 <1 <50 <1 6.7 NA NA <5 1.36 653 <1 50 <5 0.29 <1 4.1 NA 0.24 <0.2 35 NA CB-9 07/06/2015 4.9 37.02 16 41 2.25 159 364 4.5 NM <1 <1 <1 <50 <1 6.7 NA NA <5 <1 158 <1 40 <5 1.2 <1 4.06 8 0.11 <0.2 25 <0.3 CB-9 09/09/2015 5.0 37.50 16 37 1.97 223 428 7.51 NM NA NA NA NA NA NA NA 0.109 NA NA NA NA NA NA NA NA NA NA NA NA NA NA CB-9 11/02/2015 4.5 36.57 16 37 2.7 575 780 9 NM <1 <1 <1 <50 <1 6.6 NA NA <5 1.64 1050 <1 65 <5 1.1 <1 4.07 8 0.36 <0.2 <25 1.33 CB-9 12/08/2015 5.3 37.09 15 36 1.72 204 409 3.38 0 <0.5 <0.5 Ll <0.2 <50 <0.08 6.7 0.1 NA <0.5 0.8 150 <0.1 34 1.2 NA <0.5 <5 7 <1 <0.1 43 <1 CB-9 DUP 12/08/2015 5.3 37.09 15 36 1.72 204 409 3.38 0 <0.5 <0.5 L3 <0.2 <50 <0.08 6.8 0.11 NA <0.5 0.77 91 <0.1 33 1.3 NA <0.5 <5 7.1 <1 <0.1 60 D6 <1 CB-9 01/21/2016 5.2 35.48 15 36 1.8 284 489 1.8 0 <1 <1 <1 <50 <1 6.9 0.12 NA <1 <1 84 <1 36 1.28 NA <1 3.89 7 0.14 <0.2 <25 <0.3 CB-9 04/06/2016 5.1 34.71 15 37 2.21 336 541 9.33 NM <1 <1 <1 <50 <1 6.9 0.089 NA <5 1.45 739 <1 52 <5 1.2 <1 4 7 0.25 <0.2 <25 0.763 CB-9 07/05/2016 5.0 36.47 17 36 2.38 348 553 9.75 NM <1 <1 <1 <50 <1 7.1 0.085 NA <5 1.14 294 <1 40 <5 1.2 <1 3.94 7 0.11 <0.2 <25 0.501 CB-9 DUP 07/05/2016 S.0 36.47 17 36 2.38 348 553 9.75 NM <1 <1 <1 <50 <1 NA NA NA 1 1.16 345 <1 44 1.86 NA <1 NA 8 NA <0.2 NA 0.55 CB-9SL 04/27/2015 6.0 36.05 13 76 1.08 130 335 30.4 <0.5 <1 <1 <1 <50 <1 6.1 NA NA 2.86 1.21 475 <1 125 2.13 NA <1 8.54 40 0.74 <0.2 92 0.56 CB-9SL 05/28/2015 5.8 35.98 19 59 1.59 84 289 5.97 <0.5 <1 <1 <1 <50 <1 6.6 NA NA <1 <1 73 <1 71 <1 NA <1 4.15 28 0.57 <0.2 43 <0.3 CB-9SL 09/08/2015 5.8 36.51 16 59 2.61 165 370 3 NM NA NA NA NA NA NA NA 0.111 NA NA NA NA NA NA NA NA NA NA NA NA NA NA CB-9SL 12/08/2015 6.0 35.99 14 56 2.11 198 403 6.44 0 <0.5 <0.5 L3 0.29 <50 <0.08 6.2 0.2 NA 1.3 <0.5 320 0.19 12 0.77 NA <0.5 <5 28 <1 <0.1 93 <1 CB-9SL 01/21/2016 5.8 34.50 9 54 2 225 430 7.1 0 <1 <1 <1 <50 <1 6.5 0.2 NA <1 <1 95 <1 15 <1 NA <1 3 30 0.24 <0.2 41 <0.3 CB-9SL 04/13/2016 5.6 34.05 15 56 1.63 97 302 1.05 NM <1 <1 <1 <50 <1 6.3 0.25 NA <1 <1 23 <1 6 <1 NA <1 3.25 24 0.25 <0.2 54 <0.3 CB-9SL 07/11/2016 5.7 35.64 17 55 1.5 129 334 9.3 NM <1 <1 <1 <50 <1 6.3 0.23 NA 19.3 <1 158 4.89 13 12.4 NA <1 3.27 27 0.72 <0.2 43 0.392 MW-24S 05/11/2015 5.0 11.26 17 75 5.48 72 277 1.77 NM <1 <1 <1 <50 <1 12 NA NA <1 2.05 304 <1 170 1.16 NA <1 3.48 37 0.49 <0.2 54 <0.3 MW-24S 06/01/2015 5.2 11.19 15 79 4.67 97 302 2.74 <0.5 <1 <1 <1 <50 <1 13 NA NA <1 1.02 60 <1 136 1.07 NA <1 3.25 36 0.62 <0.2 66 <0.3 MW-24S 09/02/2015 5.2 11.34 18 78 5.03 193 398 0.96 NM NA NA NA NA NA NA NA 0.152 NA NA NA NA NA NA NA NA NA NA NA NA NA NA MW-24S 12/08/2015 5.2 10.95 14 77 4.81 154 359 0.25 0 <0.5 <0.5 L3 0.23 <50 <0.08 13 0.3 M1 NA <0.5 0.78 <50 <0.1 120 0.75 NA <0.5 <5 35 <1 <0.1 72 <1 MW-24S 01/19/2016 5.3 10.98 12 79 5.12 148 353 0.8 0 <1 <1 <1 <50 <1 14 0.31 NA <1 1.06 <10 <1 150 1.02 NA <1 3.31 37 0.66 <0.2 36 <0.3 MW-24S 04/12/2016 5.2 11.30 14 81 4.66 205 410 0.75 NM <1 <1 <1 232 <1 14 0.26 NA <1 <1 235 B2 <1 359 1.04 NA <1 3.38 228 0.74 <0.2 63 <0.3 MW-24S DUP 04/12/2016 5.2 11.30 14 81 4.66 205 410 0.75 NM <1 <1 <1 <50 <1 15 0.26 NA <1 <1 16 B2 <1 153 1.05 NA <1 3.34 40 0.78 <0.2 57 <0.3 MW-24S 07/08/2016 4.3 10.81 17 80 6.21 S 325 530 1.22 NM <1 <1 <1 <50 <1 14 0.26 NA <1 <1 <10 <1 136 <1 NA <1 3.35 40 0.62 <0.2 52 <0.3 Saprolite ABMW-2S 1 03/17/2015 4.2 25.53 17 813 0.41 99 304 2.39 1 <1 11.2 11 760 1 2.96 12 NA NA 1.47 1 569 1 1120 1 <1 17500 1 233 NA 10.7 19.3 258 610 0.369 640 <0.3 P:\Duke Energy Progress. 1026\102. Asheville Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 1-3 Saprolite GW Exceedances Page 1 of 4 TABLE 1-3 SAPROLITE GROUNDWATER EXCEEDANCES ASHEVILLE STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, ARDEN, NC Analytical Parameter PH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Beryllium Boron Cadmium Chloride Chromium (VI) Chromium (VI) Speci ati on Chromium Cobalt Iron Lead Manganese Nickel Nitrate Selenium Sodium Strontium Sulfate Thallium Total Dissolved Solids Vanadium Reporting Units S.U. ft Deg C umhos/cm mg/L mV mV NTUs mg/L ug/L ug/L ug/L ug/L ug/L mg/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L mg/L ug/L mg/L ug/L mg/L ug/L mg/L ug/L 15A NCAC 02L Standard 6.5-8.5 NE NE NE NE NE NE NE NE 1* 10 4* 700 2 250 0.07^ 0.07A 10 1* 300 15 50 100 10 20 NE NE 250 0.2* 500 0.3* Sample ID Sample Collection Date Field Parameters Analytical Results ABMW-2S 05/27/2015 4.1 26.05 19 832 0.26 122 327 9.33 <0.5 <1 16 12.5 751 3.3 14 NA 0.054 <1 578 557 <1 16200 247 NA 10.8 15.7 259 730 0.333 670 0.666 ABMW-2S DUP 05/27/2015 4.1 26.05 19 832 0.26 122 327 9.33 <0.5 <1 16 12.6 761 3.24 14 NA NA <1 576 453 <1 16500 245 NA 10.3 15.7 262 720 0.329 660 0.421 ABMW-2S 09/01/2015 3.9 26.90 17 746 1.5 235 440 1.2 NM NA NA NA NA NA NA NA 0.047 B NA NA NA NA NA NA NA NA NA NA NA NA NA NA ABMW-2S 12/09/2015 4.2 25.07 17 773 0.36 240 445 1.17 0 <0.5 18.9 11.6 730 2.9 13.7 <0.03 NA <0.5 417 <100 0.11 9600 168 NA 14.5 <25 220 397 M6 0.24 611 <1 ABMW-2S 01/21/2016 4.1 24.38 16 866 0.22 165 370 0.43 0 <1 23.5 12.4 851 3.48 16 <0.06 NA <1 589 27 <1 18400 286 NA 2.48 16.2 340 630 0.258 710 0.364 ABMW-5S 04/13/2015 5.9 16.44 14 211 3.53 51 256 2.62 <0.5 <1 <1 <1 <50 <1 7.8 NA NA <1 14.3 207 <1 395 2.28 NA <1 7.16 87 17 <0.2 130 <0.3 ABMW-SS 05/26/2015 5.8 18.30 20 222 0.42 -36 169 25.7 3 <1 <1 <1 <50 <1 5.2 NA 0.017 <1 16.7 4800 <1 537 3.37 NA <1 6.34 83 20 0.309 130 <0.3 ABMW-5S 09/01/2015 5.7 19.66 21 221 4.8 120 325 2.6 NM NA NA NA NA NA NA NA <0.006 NA NA NA NA NA NA NA NA NA NA NA NA NA NA ABMW-7S 04/12/2015 6.5 24.47 18 355 3.73 117 322 6.47 <0.5 <1 <1 <1 596 <1 6.3 NA NA 1.24 6.12 216 <1 798 <1 NA 3.65 13.9 333 82 0.311 190 0.76 ABMW-7S 05/27/2015 6.3 25.86 21 423 0.5 -35 170 1.96 <0.5 <1 <1 <1 789 <1 7.3 NA 0.232 <1 3.5 170 <1 763 <1 NA 1.65 11.6 442 120 0.664 200 <0.3 ABMW-7S 09/03/2015 6.3 28.71 19 420 0.8 122 327 4.1 NM NA NA NA NA NA NA NA 0.026 j NA NA NA NA NA NA NA NA NA NA NA NA NA NA APD-1 02/18/2014 5.7 5.41 8 653 0.91 271 NM 5.8 NM <1 1.35 NA 949 <1 48 NA NA <5 8.03 1770 <1 4720 <5 NA <1 NA NA 290 <0.2 580 NA APD-7 02/17/2014 5.3 25.10 12 214 0.61 219 NM 19.1 NM <1 <1 NA 132 <1 20 NA NA <5 <1 739 <1 38 <5 NA 16.4 NA NA 25 <0.2 110 NA APD-7 05/13/2015 5.5 25.60 21 169 1.2 66 271 4.76 <0.5 <1 <1 <1 119 <1 10 NA NA <1 <1 38 <1 12 <1 NA 19 4.07 47 27 <0.2 96 <0.3 CB-2 11/17/2010 5.3 19.13 13 212 NM NM NM 9.29 NM <0.5 <5 NA 241 <0.08 8.5 NA NA <5 NA 705 <5 2570 <5 0.11 <10 NA NA 92.9 0.18 158 NA CB-2 04/12/2011 5.3 17.31 14 244 0.4 -61 144 6.35 NM <0.5 <5 NA 229 <0.08 6.9 NA NA <5 NA 292 <5 2630 <5 <0.1 <10 NA NA 93.8 0.16 113 NA CB-2 07/15/2011 5.3 18.89 16 260 0.56 47 252 1.4 NM <0.5 <5 NA 245 <0.08 6.9 B NA NA <5 NA <50 <5 2580 <5 <0.2 <10 NA NA 80.6 0.18 133 B NA CB-2 11/09/2011 5.5 19.79 13 278 0.74 -93 112 1.81 NM <0.5 <5 NA 239 <0.08 8.7 NA NA <5 NA 197 <5 2690 <5 <0.2 <10 NA NA 95.8 0.18 262 NA CB-2 04/10/2012 5.2 18.64 15 253 0.44 -60 145 7.53 NM <0.5 <5 NA 219 <0.08 19.7 NA NA <5 NA <50 <5 2560 <5 <0.2 <10 NA NA 69.4 0.17 161 NA CB-2 DUP 04/10/2012 5.2 18.64 15 253 0.44 -60 145 7.53 NM <0.5 <5 NA 219 <0.08 11.4 NA NA <5 NA 54.5 <5 2540 <5 <0.2 <10 NA NA 74.6 0.17 162 NA CB-2 07/16/2012 5.3 19.98 19 279 0.98 382 587 2.31 NM <0.5 <5 NA 226 0.12 10.1 NA NA <5 NA 109 <5 2660 <5 <0.02 <10 NA NA 89.7 0.2 154 NA CB-2 11/15/2012 5.3 20.58 13 277 0.61 271 476 5.44 NM <0.5 <5 NA 230 0.098 10.5 NA NA <5 NA 146 <5 2580 <5 0.029 B <10 NA NA 83.6 0.21 153 NA CB-2 04/03/2013 5.3 18.32 14 263 0.82 93 298 2.54 NM <1 <1 NA 227 <1 9.3 NA NA <5 NA 34 <1 2890 <5 0.05 1.17 NA NA 86 <0.2 160 NA CB-2 07/01/2013 6.4 18.42 15 280 0.54 -103 102 1.37 NM <1 <1 NA 223 <1 8.8 NA NA <5 NA 243 <1 2900 <5 0.32 1.58 NA NA 79 <0.2 160 NA CB-2 DUP 07/01/2013 6.4 18.42 15 280 0.54 -103 102 1.37 NM <1 <1 NA 222 <1 8.7 NA NA <5 NA 175 <1 2910 <5 0.32 1.45 NA NA 79 <0.2 150 NA CB-2 11/06/2013 5.1 22.04 14 277 0.4 564 769 7.2 NM <1 <1 NA 307 <1 8.1 NA NA <5 NA 214 <1 3030 <5 <0.023 3.92 NA NA 91 <0.2 160 NA CB-2 04/16/2014 5.2 21.77 12 204 0.4 450 655 2.4 NM <1 <1 NA 257 <1 4.3 NA NA <5 NA 169 <1 2950 <5 0.92 <1 NA NA 68 <0.2 120 NA CB-2 07/09/2014 5.2 22.44 15 189 0.68 322 527 8 NM <1 <1 NA 240 <1 3.6 NA NA <5 NA 335 <1 3030 <5 1.4 <1 NA NA 59 <0.2 120 NA CB-2 11/03/2014 5.2 23.45 13 184 0.4 298 503 4.09 NM <1 <1 NA 209 <1 3.1 NA NA <5 NA 70 <1 2920 <5 1.7 <1 NA NA 50 <0.2 92 NA CB-2 04/07/2015 5.4 23.55 15 159 0.61 119 324 8.73 NM <1 <1 <1 174 <1 2.9 NA NA <5 4.26 319 <1 3030 <5 2.2 <1 9.94 NA 38 <0.2 100 NA CB-2 07/07/2015 5.3 24.00 18 148 0.83 115 320 4.43 NM <1 <1 <1 155 <1 2.7 NA NA <5 4.17 146 <1 3000 <5 9.8 <1 10 13 35 <0.2 93 <0.3 CB-2 11/03/2015 5.3 24.39 15 157 1.3 22 227 3.5 NM <1 <1 <1 198 <1 2.9 NA NA <5 5.7 97 <1 2750 <5 10 <1 10.8 19 38 0.483 81 <0.3 CB-4 11/18/2010 NM 17.58 13 217 NM NM NM 0.22 NM <0.5 <5 NA 404 <0.08 11.6 NA NA <5 NA <50 <5 368 <5 1.9 10.5 NA NA 96.9 <0.1 163 NA CB-4 04/12/2011 5.1 16.48 14 259 2.92 -79 126 3.74 NM <0.5 <5 NA 344 <0.08 10.2 NA NA <5 NA 90.5 <5 381 <5 1.8 <10 NA NA 85 <0.1 111 NA CB-4 07/14/2011 5.0 17.52 16 267 2.92 -29 176 0.65 NM <0.5 <5 NA 356 <0.08 9.8 B NA NA <5 NA <50 <5 411 <5 1.7 10.7 NA NA 84.1 <0.1 146 B NA CB-4 11/08/2011 5.1 17.60 15 291 2.14 -54 151 6.83 NM <0.5 <5 NA 415 <0.08 10.6 NA NA <5 NA 50.7 <5 465 <5 1.7 <10 NA NA 66.5 <0.1 180 NA CB-4 DUP 11/08/2011 5.1 17.60 15 291 2.14 -54 151 6.83 NM <0.5 <5 NA 419 <0.08 11.9 NA NA <5 NA 82.2 <5 469 <5 1.7 <10 NA NA 65.6 <0.1 293 NA CB-4 04/10/2012 5.1 16.80 14 261 2.32 -49 156 1.62 NM <0.5 <5 NA 324 0.085 11.7 NA NA <5 NA <50 <5 414 <5 1.8 <10 NA NA 73.4 <0.1 175 NA CB-4 07/16/2012 5.1 17.56 17 284 2.44 184 389 1.54 NM <0.5 <5 NA 371 <0.08 12.4 NA NA <5 NA 72.7 <5 475 <5 1.5 10.4 NA NA 94.5 <0.1 176 NA CB-4 11/15/2012 5.2 17.40 15 308 2.32 263 468 0.36 NM <0.5 <5 NA 391 0.12 12.4 NA NA <5 NA <50 <5 483 <5 1.5 <10 NA NA 91.9 <0.1 180 NA CB-4 04/03/2013 5.0 16.37 13 265 3.45 108 313 3.93 NM <1 <1 NA 322 <1 9 NA NA <5 NA 34 <1 464 <5 1.3 10 NA NA 97 <0.2 180 NA CB-4 07/01/2013 5.1 16.44 16 243 4.2 17 222 0.78 NM <1 <1 NA 288 <1 6.7 NA NA <5 NA 17 <1 393 <5 1.1 8.93 NA NA 75 <0.2 150 NA CB-4 11/06/2013 5.0 18.19 15 307 2.7 377 582 5.4 NM <1 <1 NA 525 <1 9.5 NA NA <5 NA 97 <1 591 <5 1.3 12.4 NA NA 120 <0.2 200 NA CB-4 04/16/2014 5.2 17.69 13 322 2.9 241 446 1.2 NM <1 <1 NA 527 <1 8.9 NA NA <5 NA 39 <1 597 <5 1.9 10.4 NA NA 130 <0.2 210 NA CB-4 DUP 04/16/2014 5.2 17.69 13 322 2.9 241 446 1.2 NM <1 <1 NA 519 <1 6.9 NA NA <5 NA 33 <1 593 <5 0.33 10.3 NA NA 130 <0.2 220 NA CB-4 07/09/2014 5.1 18.70 17 331 3.93 407 612 4.2 NM <1 <1 NA 567 <1 8.6 NA NA <5 NA 209 <1 677 <5 2.3 9.69 NA NA 130 <0.2 230 NA CB-4 11/03/2014 5.1 19.70 15 366 3.77 434 639 9.59 NM <1 <1 NA 653 <1 9 NA NA <5 NA 241 <1 809 <5 2.8 8.43 NA NA 130 <0.2 230 NA CB-4 04/08/2015 5.1 19.00 13 340 4.52 112 317 6.73 NM <1 <1 <1 590 <1 7.5 NA NA <5 1.63 291 <1 747 <5 2.8 8 18.1 NA 140 <0.2 240 NA CB-4 07/08/2015 5.2 20.38 18 335 3.12 206 357 18 NM <1 <1 <1 598 <1 7.6 NA NA <5 5.41 3340 1.57 920 <5 16 7.58 17.7 213 130 <0.2 230 4.68 CB-4 11/04/2015 5.2 20.30 16 359 2.23 0 205 8.15 NM <1 <1 <1 683 <1 8.9 NA NA <5 2.47 226 <1 975 <5 8.9 6.23 18.5 B2 243 140 <0.2 220 0.446 CB-4 12/09/2015 5.1 18.59 14 291 5.8 262 467 10.1 0 <0.5 <0.5 <0.2 540 <0.08 4.5 0.23 NA 0.55 B 1.7 210 0.22 570 1.4 NA 8.8 17.4 190 115 <0.1 198 <1 CB-4 01/19/2016 5.3 16.89 9 212 5.97 164 369 2.83 0 <1 <1 <1 378 <1 2.2 <0.03 NA <1 1.05 10 <1 382 <1 NA 7.36 14.9 136 100 <0.2 120 <0.3 CB-4 04/05/2016 5.2 18.31 13 213 8.52 329 534 2.41 NM <1 <1 <1 350 <1 2 NA NA <5 <1 111 <1 408 <5 1 5.57 15.1 138 93 <0.2 140 <0.3 CB-4 DUP 04/05/2016 5.2 18.31 13 213 8.52 329 534 2.41 NM <1 <1 <1 348 <1 2 NA NA <5 <1 117 <1 406 <5 1.1 5.24 15.2 137 96 <0.2 140 <0.3 CB-4 07/05/2016 5.2 21.42 26 241 3.33 383 588 4.5 NM <1 <1 <1 400 <1 5.2 NA NA <5 1.64 28 <1 722 <5 16 4.65 14.7 178 92 <0.2 150 <0.3 DP-1 02/17/2014 6.9 11.62 11 1229 0.17 -107 NM 48.1 NM <1 1220 NA 1140 <1 8.2 NA NA <5 41.8 10100 <1 2430 9 NA <1 NA NA 160 0.73 730 NA DP-1 05/13/2015 7.1 11.94 21 550 0.74 50 255 39.6 2.25 <1 1180 <1 378 <1 2.3 NA NA <1 20.7 8770 <1 1570 3.64 NA <1 6.22 1810 96 <0.2 370 3.12 GW-1 12/14/2007 4.5 20.39 14 98 NM NM NM NM NM <5 6.3 NA <10 <1 8.2 NA NA 35.7 NA 56800 29.4 NA 34.1 6.3 <10 NA NA <5 0.12 50 NA GW-1 04/21/2008 3.8 19.78 14 98 NM NM NM NM NM <5 <5 NA <10 <1 <5 NA NA <5 NA 2880 <5 189 8.7 8.2 <10 NA NA <5 <0.5 40 NA P:\Duke Energy Progress.1026\102. Asheville Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 1-3 Saprolite GW Exceedances Page 2 of 4 TABLE 1-3 SAPROLITE GROUNDWATER EXCEEDANCES ASHEVILLE STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, ARDEN, NC Analytical Parameter PH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Beryllium Boron Cadmium Chloride Chromium (VI) Chromium (VI) Speci ati on Chromium Cobalt Iron Lead Manganese Nickel Nitrate Selenium Sodium Strontium Sulfate Thallium Total Dissolved Solids Vanadium Reporting Units S.U. ft Deg C umhos/cm mg/L mV mV NTUs mg/L ug/L ug/L ug/L ug/L ug/L mg/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L mg/L ug/L mg/L ug/L mg/L ug/L mg/L ug/L 15A NCAC 02L Standard 6.5-8.5 NE NE NE NE NE NE NE NE 1* 10 4* 700 2 250 0.07^ 0.07A 10 1* 300 15 50 100 10 20 NE NE 250 0.2* 500 0.3* Sample ID Sample Collection Date Field Parameters Analytical Results GW-1 10/13/2008 4.4 19.95 13 72 NM NM NM NM NM <5 <5 NA <50 <1 <5 NA NA <5 NA 122 <5 74.8 5 5.2 <10 NA NA <5 <0.1 54 NA GW-1 04/14/2009 4.3 19.70 14 89 NM NM NM NM NM <5 <5 NA <50 <1 <5 NA NA <5 NA 575 <5 98.5 7.5 7.7 <10 NA NA <5 <0.5 70 NA GW-1 10/16/2009 4.5 19.82 14 102 NM NM NM NM NM <5 <5 NA <50 <1 <5 NA NA <5 NA 232 <5 100 6.5 8.2 <10 NA NA <5 <0.5 74 NA GW-1 05/11/2010 3.1 19.63 13 106 NM NM NM NM NM <5 <5 NA <50 <1 <5 NA NA <5 NA 459 <5 90.3 5 8.6 <10 NA NA <5 <0.1 26 NA GW-1 11/17/2010 4.5 20.16 11 69 NM NM NM 6.32 NM <0.5 <5 NA <50 <0.08 <5 NA NA <5 NA 63.6 <5 81 <5 7.7 <10 NA NA <5 <0.1 46 NA GW-1 04/12/2011 4.3 19.33 13 112 5.06 49 254 7.46 NM <0.5 <5 NA <50 <5 <5 NA NA <5 NA 248 <5 138 7.1 10.9 <10 NA NA <5 <0.1 44 NA GW-1 07/14/2011 4.3 19.88 16 87 5.01 -84 121 2.77 NM <0.5 <5 NA <50 <0.08 <5 NA NA <5 NA 79.6 <5 134 7 B 7.5 <10 NA NA <5 <0.1 <25 NA GW-1 11/09/2011 4.6 20.54 14 96 4.36 -82 123 2.28 NM <0.5 <5 NA <50 <0.08 <5 NA NA <5 NA 102 <5 205 5.9 7.9 <10 NA NA <5 <0.1 86 NA GW-1 04/10/2012 4.6 20.03 16 104 3.95 -67 138 3.07 NM <0.5 <5 NA <50 <0.08 <5 NA NA <5 NA 96 <5 341 5.9 8 <10 NA NA <5 <0.1 64 NA GW-1 07/16/2012 4.4 19.92 16 93 2.92 297 502 7.98 NM <0.5 <5 NA 65.1 0.082 4.7 NA NA <5 NA 147 <5 310 <5 7.1 <10 NA NA <2 <0.1 57 NA GW-1 11/15/2012 4.6 20.69 15 96 2.26 348 553 5.76 NM <0.5 <5 NA <50 0.1 4.9 NA NA <5 NA 480 <5 293 <5 6 <10 NA NA 3.1 <0.1 37 NA GW-1 04/03/2013 4.5 20.68 15 93 2.48 137 342 2.57 NM <1 <1 NA <50 <1 5.4 NA NA <5 NA 31 <1 442 <5 5.9 2.04 NA NA 1.9 <0.2 69 NA GW-1 07/01/2013 4.8 20.47 17 125 3.42 12 217 2.17 NM <1 <1 NA <50 <1 6.2 NA NA <5 NA 49 <1 612 6 7.1 3.32 NA NA 3.2 <0.2 80 NA GW-1 11/05/2013 4.5 20.94 14 148 2.3 436 641 3.1 NM <1 <1 NA <50 <1 7 NA NA <5 NA 89 <1 737 5 7.8 4.9 NA NA 15 <0.2 87 NA GW-1 04/17/2014 4.6 20.55 15 138 1.6 290 495 8 NM <1 1.25 NA <50 <1 6 NA NA <5 NA 275 <1 692 <5 6.4 1.47 NA NA 17 <0.2 75 NA GW-1 07/10/2014 4.4 20.14 17 154 1.5 364 569 1.9 NM <1 1.61 NA <50 <1 7.1 NA NA <5 NA 84 <1 683 <5 6.2 1.53 NA NA 24 <0.2 85 NA GW-1 11/04/2014 4.7 20.95 17 155 0.98 337 542 8.62 NM <1 <1 NA <50 <1 6.7 NA NA <5 NA 568 <1 534 <5 4.1 1.56 NA NA 27 <0.2 75 NA GW-1 04/07/2015 4.8 20.81 15 123 0.89 121 326 0.67 NM <1 <1 <1 <50 <1 6.6 NA NA <5 4.71 15 <1 507 <5 3.2 1.6 1.09 NA 25 <0.2 83 NA GW-1 07/06/2015 4.8 20.58 19 137 1.1 263 468 4.99 NM <1 <1 <1 <50 <1 6.6 NA NA <5 4.76 101 <1 551 <5 13 1.78 1.05 <5 35 <0.2 78 <0.3 GW-1 11/02/2015 5.2 20.55 17 115 1.4 541 746 0.8 NM <1 <1 <1 <50 <1 6.6 NA NA <5 3.79 26 <1 397 <5 7.4 1.33 1.41 <5 27 0.21 67 <0.3 GW-1 12/09/2015 4.8 20.09 16 127 1.1 355 560 4.64 0 <0.5 0.94 0.23 <50 <0.08 6.7 1 NA 1.2 5.6 <50 0.16 460 3.2 NA 1.7 <5 <5 24.5 <0.1 84 <1 L3 GW-1 01/18/2016 4.8 20.19 15 161 1.8 397 602 8.02 0 <1 <1 <1 <50 <1 5.5 0.87 NA 1.2 6.13 104 <1 725 3.4 NA 1.53 1.13 <5 29 <0.2 82 <0.3 GW-1 04/05/2016 4.8 20.65 14 220 1.51 360 565 2.43 NM <1 1.26 <1 <50 <1 7.9 NA NA <5 6.92 141 <1 1070 <5 32 2.32 1.13 <5 52 <0.2 120 <0.3 GW-1 07/06/2016 4.8 20.46 22 180 0.55 366 571 2.78 NM <1 <1 <1 <50 <1 6.9 NA NA <5 5.06 29 <1 668 <5 1S B2 2.17 1.32 <5 50 <0.2 120 <0.3 GW-1 DUP 07/06/2016 4.8 20.46 22 180 0.55 366 571 2.78 NM <1 <1 <1 <50 <1 6.9 NA NA <5 4.98 33 <1 657 <5 15 B2 2.17 1.29 <5 58 <0.2 110 <0.3 GW-3 12/14/2007 5.7 12.76 16 498 NM NM NM NM NM <5 <5 <1 1120 <1 12.1 NA NA <5 NA 337 <5 NA <5 <0.1 <10 NA NA 150 0.10 320 NA GW-3 04/21/2008 6.4 12.15 14 463 NM NM NM NM NM <5 <5 <1 1300 <1 14.2 NA NA <5 NA 889 <5 1370 <5 <0.1 <10 NA NA 127 <0.1 300 NA GW-3 10/13/2008 5.7 12.69 16 504 NM NM NM NM NM <5 <5 <1 1290 <1 21.2 NA NA <5 NA 86.1 <5 1850 <5 <0.1 <10 NA NA 148 <0.1 370 NA GW-3 04/14/2009 5.7 11.93 14 500 NM NM NM NM NM <5 <5 <1 1320 <1 24.7 NA NA <5 NA 122 <5 1120 <5 <0.1 <10 NA NA 142 <0.5 218 NA GW-3 10/16/2009 5.7 11.88 16 470 NM NM NM NM NM <5 <5 <1 1190 <1 26.8 NA NA <5 NA 261 <5 736 <5 0.25 <10 NA NA 156 <0.5 328 NA GW-3 05/11/2010 5.7 11.50 14 481 NM NM NM NM NM <5 <5 <1 1240 <1 34.2 NA NA <5 NA 3470 <5 1770 <5 <0.1 <10 NA NA 143 <0.1 290 NA GW-3 02/18/2014 5.7 12.40 11 678 2.03 341 NM 9.5 NM <1 <1 NA 1400 <1 51 NA NA <5 18.3 1100 <1 385 <5 NA 1.59 NA NA 210 <0.2 470 NA GW-3 05/14/2015 5.6 12.99 17 476 2.72 78 283 6.98 <0.5 <1 <1 <1 1170 <1 39 NA NA <1 17.2 485 <1 555 <1 NA 2.84 12.5 679 170 <0.2 440 0.301 GW-3 12/09/2015 5.7 11.92 15 295 2 279 484 9.3 0 <0.5 <0.5 <0.2 760 <0.08 14.7 0.16 NA <0.5 3.9 310 0.17 ISO 0.57 NA 3.8 17.8 420 83.9 <0.1 221 <1 11 GW-3 01/21/2016 5.7 11.77 12 221 0.37 119 324 3.37 1 <1 <1 <1 477 <1 17 <0.03 NA <1 51.5 955 <1 3200 2.41 NA 1.17 12.7 316 50 <0.2 200 <0.3 GW-3 04/25/2016 5.8 13.00 16 880 1.26 304 509 1.96 NM <1 <1 <1 1840 <1 89 NA NA <1 1.66 NA <1 NA NA NA <1 NA NA 310 <0.2 670 NA VW-6S 04/15/2015 5.5 1.55 14 332 0.33 115 320 9.52 <0.5 <1 <1 <1 1090 <1 12 NA NA <1 15.6 645 <1 10000 1.9 NA <1 14.1 147 120 <0.2 220 0.543 VW-6S 05/21/2015 5.3 4.51 16 343 0.45 51 256 3.94 <0.5 <1 <1 <1 1050 <1 12 NA NA <1 6.17 225 <1 9970 <1 NA <1 14.6 141 130 <0.2 220 <0.3 MW-8S 03/06/2015 6.0 7.69 11 2013 0.79 41 246 4.25 <0.5 <1 <1 <1 5030 <1 450 NA NA <1 7.73 162 <1 2850 2.47 NA 1.17 18.8 4410 260 <0.2 1500 0.342 MW-8S 05/27/2015 5.9 6.93 23 1949 0.95 108 313 8.15 <0.5 <1 <1 <1 5330 <1 450 NA 0.045 <1 3.09 17 <1 2830 1.65 NA 1.41 15 4160 290 <0.2 1900 <0.3 MW-8S 09/01/2015 6.2 7.34 25 1897 1.18 169 374 1.02 NM NA NA NA NA NA NA NA 0.026 B NA NA NA NA NA NA NA NA NA NA NA NA NA NA MW-8S 12/09/2015 6.0 6.27 17 1810 0.8 272 477 2.31 0 <0.5 0.74 <0.2 5600 <0.08 398 0.035 NA <0.5 2.8 <50 <0.1 2600 1.5 NA 1.2 14.4 3700 243 <0.1 1280 <1 L3 VW-8S 01/20/2016 6.1 5.86 11 1851 0.4 197 402 0.5 0 <1 <1 <1 6140 <1 420 <0.03 NA <1 2.75 15 <1 2920 1.56 NA 1.13 14.3 3540 260 <0.2 1300 <0.3 MW-9S 04/27/2015 5.5 28.52 19 2252 2.04 132 337 4.16 <0.5 <1 <1 <1 4730 <1 560 NA NA <1 15.8 70 <1 4290 5.24 NA 36.6 18.1 3080 250 0.294 1700 <0.3 MW-9S 05/21/2015 5.5 28.56 20 2291 1.19 37 242 5.59 <0.5 <1 <1 <1 4800 <1 570 NA NA <1 5.9 211 <1 3630 3.92 NA 40.6 17.5 2950 270 <0.2 1700 <0.3 MW-9S 12/09/2015 5.2 28.20 12 2182 1.3 429 634 3.32 0 <0.5 <0.5 <0.2 5400 0.18 <1 0.37 NA 0.64 4 <50 <0.1 3400 3.2 NA 39.7 17.2 3000 290 0.19 1410 <1 Ll MW-9S 01/20/2016 5.7 27.69 7 2135 1.4 362 567 1 NM <1 <1 <1 5560 <1 530 0.5 NA 16.1 3.64 78 <1 3410 9.71 NA 34 17 2600 290 <0.2 1500 <0.3 P-100 05/19/2015 5.4 75.12 22 359 0.22 -124 81 9.01 <0.5 <1 <1 <1 732 <1 12 NA NA 12.7 35.9 545 <1 3380 13.6 NA <1 17.2 18 140 <0.2 230 0.457 P-101 05/19/2015 5.7 86.39 22 418 0.24 -6 199 2.53 <0.5 <1 <1 <1 1200 <1 12 NA NA 2.34 14.3 155 <1 2320 4.18 NA <1 14.3 362 160 <0.2 260 <0.3 P-103 05/20/2015 5.6 48.53 20 209 0.19 -80 125 8.91 0.5 <1 <1 <1 420 <1 11 NA NA 6.07 20 724 <1 7410 10.1 NA <1 5.8 25 50 <0.2 120 0.488 P-104 05/19/2015 5.7 44.84 21 222 0.87 -21 184 13.3 <0.5 <1 <1 <1 194 <1 7.1 NA NA 1.64 26.8 737 <1 1150 3.56 NA 1.37 6.04 88 41 <0.2 140 0.559 P-105 05/13/2015 5.0 44.78 20 70 3.56 74 279 8.09 NM <1 <1 <1 <50 <1 9 NA NA 2.5 3.97 422 <1 120 5.01 NA <1 2.58 26 3.1 <0.2 44 0.584 PZ-IS 12/14/2006 6.6 11.70 16 1 NM NM NM NM NM 4.8 <2 <0.7 345 <0.5 7.2 NA NA <2 NA 987 <2 463 2.8 0.37 <2 76.2 NA 180 <4 397 NA PZ-8 12/14/2006 5.8 49.49 14 1 NM NM NM NM NM <2 476 <0.7 1200 <0.5 7.5 NA NA <2 NA 22500 <2 2720 <2 0.54 <2 5.2 NA 40 <4 310 NA PZ-12 12/14/2006 7.1 12.54 14 0 NM NM NM NM NM <2 2 <0.7 574 <0.5 6.7 NA NA <2 NA 233 <2 7880 2.5 0.41 <2 23 NA 110 <4 222 NA PZ-19 12/14/2006 5.7 17.63 14 0 NM NM NM NM NM 10.4 5.2 <0.7 623 0.7 6.1 NA NA 9.3 NA 595 <2 76.2 8.7 0.99 <2 21.4 NA 94 5.8 191 NA PZ-19 06/12/2007 7.3 17.66 16 329 NM NM NM NM NM <0.1 0.42 0.88 478 0.23 7.16 NA NA 82.2 NA 18700 0.7 179 59.5 1.52 2.9 NA NA 104 0.43 214 NA PZ-19 12/13/2007 5.6 17.74 22 373 NM NM NM NM NM <5 <5 <1 483 <1 12.3 NA NA 81.7 NA 7210 <5 NA 55.5 0.95 <10 NA NA 112 0.22 272 NA PZ-19 04/21/2008 6.5 17.71 19 357 NM NM NM NM NM <5 <5 <1 558 <1 11.3 NA NA 8.5 NA 572 <5 81.6 5.7 0.97 <10 NA NA 113 0.16 230 NA PZ-19 10/13/2008 5.8 17.34 17 373 NM NM NM NM NM <5 <5 <1 498 <1 13.3 NA NA 6.3 1 NA I 558 <5 23.8 <5 1.4 <10 NA NA 122 0.13 262 NA P:\Duke Energy Progress. 1026\102. Asheville Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 1-3 Saprolite GW Exceedances Page 3 of 4 TABLE 1-3 SAPROLITE GROUNDWATER EXCEEDANCES ASHEVILLE STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, ARDEN, NC Analytical Parameter PH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Beryllium Boron Cadmium Chloride Chromium (VI) Chromium (VI) Speci ati on Chromium Cobalt Iron Lead Manganese Nickel Nitrate Selenium Sodium Strontium Sulfate Thallium Total Dissolved Solids Vanadium Reporting Units S.U. ft Deg C umhos/cm mg/L mV mV NTUs mg/L ug/L ug/L ug/L ug/L ug/L mg/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L mg/L ug/L mg/L ug/L mg/L ug/L mg/L ug/L SSA NCAC 02L Standard 6.5-8.5 NE NE NE NE NE NE NE NE 1* SO 4* 700 2 250 0.07^ 0.07A SO 1* 300 15 50 100 10 20 NE NE 250 0.2* 500 ll Sample ID Sample Collection Date Field Parameters Analytical Results PZ-19 05/11/2010 5.9 17.63 16 323 NM NM NM NM NM <5 <5 <1 547 <1 12.2 NA NA 15.8 NA 1590 <5 38.6 8.8 1.3 <10 NA NA 121 0.16 160 NA PZ-19 02/19/2014 5.9 21.77 14 488 0.5 301 NM 2.3 NM <1 <1 NA 1000 <1 12 NA NA <5 <1 151 <1 238 <5 NA <1 NA NA 170 0.2 310 NA PZ-19 05/20/2015 5.7 24.34 22 450 2.48 117 322 9.77 <0.5 2.16 <1 <1 969 <1 9.8 NA NA 4.34 <1 471 <1 272 5.63 NA <1 16.9 565 170 0.252 NA 0.99 PZ-22 12/14/2006 5.5 1.30 10 0 NM NM NM NM NM 3.3 <2 <0.7 706 0.5 6 NA NA <2 NA 351 <2 1570 2.1 0.52 <2 19.6 NA 100 <4 198 NA PZ-22 06/12/2007 7.4 1.58 16 318 NM NM NM NM NM <0.1 0.85 0.22 579 0.48 7.35 NA NA 9 NA 12700 5.4 1150 6.5 0.05 2.7 NA NA 105 0.32 217 NA PZ-22 12/13/2007 4.8 1.55 13 351 NM NM NM NM NM <5 <5 <1 578 <1 10.9 NA NA <5 NA 1390 <5 NA <5 0.19 <10 NA NA 106 0.11 214 NA PZ-22 04/21/2008 5.6 1.65 14 346 NM I NM NM NM NM <5 <5 <1 1 756 <1 10.1 NA NA <5 NA 1110 <5 1840 <5 0.16 <10 NA NA 116 0.12 222 NA PZ-22 10/13/2008 5.3 1.56 15 358 NM NM NM NM NM <5 <5 <1 722 <1 12.3 NA NA <5 NA 750 <5 1830 <5 0.17 <10 NA NA 123 0.12 238 NA PZ-22 04/14/2009 5.3 1.42 13 320 NM NM NM NM NM <5 <5 <1 733 <1 11.9 NA NA <5 NA 1190 <5 2040 <5 0.12 <10 NA NA 118 <0.5 230 NA PZ-22 10/16/2009 5.5 1.48 16 345 NM NM NM NM NM <5 <5 <1 633 <1 13 NA NA <5 NA 1260 <5 1830 <5 0.23 <10 NA NA 115 <0.5 230 NA PZ-22 05/11/2010 5.5 1.47 14 306 NM NM NM NM NM <5 <5 <1 772 <1 12.7 NA NA <5 NA 1390 <5 1880 <5 0.14 <10 NA NA 107 <0.1 164 NA PZ-22 02/19/2014 5.7 1.55 9 441 0.1 109 NM 8.8 NM <1 <1 NA 798 <1 11 NA NA <5 9.13 4740 <1 2200 <5 NA <1 NA NA 170 <0.2 270 NA PZ-22 07/23/2014 5.2 2.29 19 417 0.43 255 NM 7.36 NM <1 <1 NA 1200 <1 10 NA NA <5 12 1430 <1 2400 <5 0.84 <1 16.8 NA 170 <0.2 280 NA PZ-22 05/18/2015 5.5 3.07 17 467 0.56 35 240 5.73 2 <1 <1 <1 1210 <1 8.3 NA NA <1 6.95 2300 <1 2230 1.29 NA <1 17.2 826 200 <0.2 290 <0.3 PZ-23 02/20/2014 5.4 19.98 14 298 0.4 482 NM 2.9 NM <1 2.58 NA 287 <1 8.8 NA NA <5 25.3 53 <1 3800 <5 NA <1 NA NA 91 0.22 160 NA PZ-23 05/18/2015 5.4 21.40 17 228 0.42 147 352 9.22 0 <1 <1 <1 226 <1 4.4 NA NA <1 22.4 358 <1 3640 1.43 NA <1 16.5 112 62 <0.2 120 0.389 PZ-24 02/20/2014 6.0 5.84 14 422 0.3 14 NM 7.5 NM <1 2.21 NA <50 <1 4.3 NA NA <5 2.67 45900 <1 1730 6 NA <1 NA NA 0.12 <0.2 210 NA PZ-24 05/19/2015 6.0 8.63 24 511 1.02 90 295 33.4 7 <1 1.11 <1 <50 <1 6.8 NA NA 4.49 4.35 69200 <1 2000 3.56 NA <1 5.24 202 <0.1 <0.2 260 4.25 PZ-26 02/20/2014 4.5 23.50 15 31 2.9 281 NM 8.2 NM <1 <1 NA <50 <1 1.9 NA NA <5 2.34 657 <1 40 <5 NA <1 NA NA <0.1 <0.2 <25 NA PZ-26 05/19/2015 4.8 27.08 20 42 1.94 101 306 9.44 <0.5 <1 <1 <1 <50 <1 2.8 NA NA <1 2.23 189 <1 34 <1 NA <1 2 9 0.13 <0.2 <25 <0.3 PZ-26 12/10/2015 5.0 26.50 12 41 1.7 223 428 8.88 0 <0.5 <0.5 0.35 <50 <0.08 3.7 0.093 NA <0.5 2.4 340 0.11 34 1 1 NA <0.5 <5 11 <1 <0.1 42 D6 <1 PZ-27 02/20/2014 7.5 32.80 16 1376 0.2 -109 NM 274 NM 10.6 1730 NA 2370 6.5 32 NA NA 30 1 11.5 1 125001 14.1 1 484 1 34 1 NA 1 3.54 1 NA NA 1 300 1 1.34 1 960 NA Still Pipe 02/18/2014 6.0 Artesian 14 1220 0.25 246 NM 0.61 NM <1 3.89 NA 1660 <1 85 NA NA <5 1 39.8 1 950 1 <1 1 10400 1 17 1 NA 1 1.75 1 NA NA 1 390 1 <0.2 1 870 NA Prepared by: BER Checked by: TDP Notes: Q - Bold highlighted concentration indicates exceedance of the 15A NCAC 02L Standard, Appendix 2, April 1, 2013. Deg C = Degrees Celsius my = Millivolts mg/L = Milligram per liter ORP = Oxidation Reduction Potential DO = Dissolved oxygen DUP = Duplicate NA = Not analyze ug/L = Microgram per liter umhos/cm = Micro mhos per centimeter NE = Not established S.U. = Standard Unit ft = Feet Temp = Temperature Spec Cond = Specific Conductance NM = Not measured Eh = Redox Potential NTU = Nephelometric turbidity unit = NC DHHS Health Screening Level < = Concentration not detected at or above the reporting limit = Interim Maximum Allowable Concentrations (IMACs) of the 15A NCAC 02L Standard, Appendix 1, April 1, 2013. j = Indicates concentration reported below Practical Quantitation Limit (PQL), but above Method Detection Limit (MDL) and therefore concentration is estimated. B = Target analyte detected in method blank at or above the reporting limit. Target analyte concentration in sample is less than 10x the concentration in the method blank. B2 = Target analyte was detected in blank(s) at a concentration greater than 1/2 the reporting limit but less than the reporting limit. Analyte concentration in sample is valid and may be used for complicance purposes. D6 = The relative percent difference (RPD) between the sample and sample duplicate exceeded laboratory control limits. -1 = Analyte recovery in the laboratory control sample (LCS) was above QC limits. Results may be biased high. L3 = Analyte recovery in the laboratory control sample (LCS) exceeded QC limits. Analyte presence below reporting limits in associated samples. Results unaffected by high bias. MI = Matrix spike recovery exceeded QC limits. Batch accepted based on laboratory control sample (LCS) recovery. M6 = Matrix spike and matrix spike duplicate recovery not evaluated against control limits due to sample dilution. P:\Duke Energy Progress. 1026\102. Asheville Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 1-3 Saprolite GW Exceedances Page 4 of 4 TABLE 1-4 TRANSITION ZONE EXCEEDANCES ASHEVILLE STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, ARDEN, NC Analytical Parameter PH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Boron Chloride Chromium (VI) Chromium (VI) Speciation Chromium Cobalt Iron Manganese Nickel Nitrate as N) Nitrate Selenium Sodium Strontium Sulfate Thallium Total Dissolved Solids Vanadium Reporting Units S.U. ft Deg C umhos/cm mg/L mV mV NTUs mg/L ug/L mg/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L mg-N/L mg/L ug/L mg/L ug/L mg/L ug/L mg/L ug/L 15A NCAC 02L Standard 6.5-8.5 NE NE NE NE NE NE NE NE 700 250 0.07^ 0.07A 10 1* 300 50 100 10 10 20 NE NE 250 0.2* 500 0.3* Sample ID Sample Collection Date Field Parameters Analytical Results Background CB-1D 04/28/2015 6.7 38.22 17 75 1.56 1 206 7.52 <0.5 <50 1.3 NA NA 7.04 2.54 528 226 6.03 0.036 NA <1 5.63 25 2.7 <0.2 44 0.416 CB -ID 05/21/2015 6.4 38.36 16 57 0.8 48 253 2.83 0.5 <50 1.1 NA NA 1.27 1.66 589 286 2.07 0.038 NA <1 3.89 19 2.2 <0.2 37 0.34 CB -ID 09/08/2015 5.8 38.92 16 30 2.87 122 327 2.36 NM NA NA NA 0.013 j NA NA NA NA NA NA NA NA NA NA NA NA NA NA CB-1D 12/08/2015 6.4 39.34 15 39 1.5 -67 138 3.26 NM <50 1.2 <0.03 NA 2.4 2.6 610 180 3.7 0.11 NA <0.5 <5 19 3.2 <0.1 67 <1 CB-1D 01/20/2016 5.8 37.24 13 31 2.12 115 320 3.67 0 <50 0.83 <0.03 NA 1.83 2.34 269 151 2.72 0.093 NA <1 1.78 14 3.2 <0.2 <25 <0.3 CB -ID 04/13/2016 5.6 34.08 15 36 3.17 91 296 4.08 NM <50 0.91 <0.03 NA <1 3.08 231 93 4.97 0.165 NA <1 2.92 17 4.6 <0.2 38 <0.3 CB-1D 1 07/08/2016 1 5.1 1 36.70 1 20 30 6.53 S 213 418 9.65 NM <50 0.96 <0.03 NA <1 2.33 193 70 2.32 0.208 NA <1 2.48 14 2.1 <0.2 <25 <0.3 CB -ID DUP 07/08/2016 5.1 36.70 20 30 HE S 213 418 9.65 NM <50 7.5 <0.03 NA <1 2.03 163 68 1.85 0.206 NA <1 2.1 14 5.6 <0.2 <25 <0.3 Transition Zone ABMW-4D 03/31/2015 6.1 36.62 16 366 0.25 9 214 5.08 3 1050 12 NA NA <1 67.3 8370 6070 2.5 <0.01 NA <1 5.59 214 100 <0.2 240 0.789 ABMW-4D 05/26/2015 5.7 37.05 18 375 0.45 212 417 6.47 3.5 1080 12 NA 0.02 <1 54.2 6360 5820 2.25 0.016 NA <1 5.19 176 110 0.319 250 0.564 ABMW-4D DUP 05/26/2015 5.7 37.05 18 375 0.45 212 417 6.47 3.5 1080 13 NA NA <1 54.6 6290 5790 2.31 0.037 NA <1 5.26 179 110 0.291 240 0.451 ABMW-4D 09/08/2015 5.8 38.81 17 366 0.49 21 226 3.44 NM NA NA NA 0.021 j NA NA NA NA NA NA NA NA NA NA NA NA NA NA ABMW-4D 12/10/2015 5.6 37.51 15 365 0.2 16 221 9.31 3 1100 12.1 <0.03 NA 1.5 49.6 8200 5700 2.9 0.028 NA <0.5 5.41 180 109 0.21 214 <1 ABMW-4D DUP 12/10/2015 5.6 37.51 15 365 0.2 16 221 9.31 3 1100 12.2 <0.03 NA 1.7 49.3 7900 5600 3 0.021 NA <0.5 5.59 170 108 0.24 246 1.2 ABMW-4D 01/21/2016 5.7 35.45 15 356 0.18 47 252 8.21 2.5 1110 13 <0.03 NA 1.15 50.4 7630 5790 2.62 0.017 NA <1 5.23 181 120 <0.2 240 0.603 ABM W-5D 04/12/2015 6.2 17.07 14 291 0.49 96 301 5.57 3.5 108 9.8 NA NA <1 1.2 21100 1 517 1.14 1 <0.01 NA <1 10 114 15 <0.2 200 <0.3 ABMW-5D 05/26/2015 6.1 20.33 19 270 0.48 -96 109 9.39 4 106 11 NA 0.016 <1 <1 19000 369 <1 0.025 NA <1 8.01 108 16 <0.2 170 <0.3 ABMW-5D 09/01/2015 6.2 20.92 22 264 1 46 251 1.6 NM NA NA NA 0.008 B NA NA NA NA NA NA NA NA NA NA NA NA NA NA AMW-2A 07/24/2014 5.5 21.82 18 297 0.24 80 NM 2.95 NM 296 8.4 NA NA <5 19 8200 1790 <5 0.04 0.18 1.54 16.5 NA 87 <0.2 190 NA AMW-2A 05/19/2015 5.7 22.12 18 296 0.54 -34 171 9.4 <0.5 225 8.2 NA NA <1 21.2 16800 2950 1.35 0.04 NA <1 13.9 236 65 <0.2 190 <0.3 AMW-2A 12/09/2015 5.3 21.42 16 152 0.8 136 341 8.95 1.5 70 5.4 <0.03 NA <0.5 1 12.9 5400 1600 4.9 0.36 NA <0.5 9.77 82 1 40 0.11 113 <1 AMW-2A 01/19/2016 5.8 21.20 10 221 1 0.23 113 318 5.27 1 3.5 132 7.7 <0.03 NA <1 20.5 25700 3110 2.21 0.018 NA <1 9.34 174 51 <0.2 140 <0.3 CB-3 11/18/2010 NM 22.81 13 279 NM NM NM 0.71 NM 389 13.3 NA NA <5 NA 1 3490 159 <5 NA 0.36 <10 NA NA 114 0.31 187 NA CB-3 04/12/2011 5.7 22.30 16 344 0.14 -106 99 0.35 NM 356 12.8 NA NA <5 NA 1260 142 <5 NA 0.5 <10 NA NA 108 0.41 130 NA CB-3 07/14/2011 5.7 22.25 18 370 0.3 -25 180 0.55 NM 351 13.6 B NA NA <5 NA 879 146 <5 NA 0.43 <10 NA NA 114 0.4 165 B NA CB-3 11/09/2011 5.9 22.26 14 406 0.49 -121 84 1.5 NM 423 13.2 NA NA <5 NA 796 155 <5 NA <0.2 <10 NA NA 168 0.38 440 NA CB-3 04/10/2012 5.8 22.40 18 473 0.4 -53 152 1.36 NM 615 13.9 NA NA <5 NA 774 179 <5 NA 0.42 <10 NA NA 142 0.48 287 1 NA CB-3 07/16/2012 5.8 22.02 21 530 0.65 107 312 0.67 NM 895 13.9 NA NA <5 NA 384 178 <5 NA 0.21 <10 NA NA 1 194 0.45 293 NA CB-3 DUP 07/16/2012 5.8 22.02 1 21 530 1 0.65 107 1 312 0.67 1 NM 900 13.6 NA NA <5 NA 331 178 <5 NA 0.23 <10 NA NA 196 0.43 300 NA CB-3 05/19/2015 5.8 31.24 18 439 0.4 229 434 40.8 <0.5 947 8.8 NA NA <1 1.88 844 1 331 1.84 0.465 NA 3.03 13.1 584 150 0.398 240 0.675 CB-3R 11/14/2012 5.2 26.11 16 488 0.66 190 395 4.05 NM 1290 13 NA NA <5 NA 190 366 <5 NA 1 <10 NA NA 170 0.32 324 NA CB-3R 04/03/2013 5.4 26.14 17 415 0.58 87 292 7.8 NM 704 11 NA NA <5 NA 10100 231 <5 NA 0.4 2.15 NA NA 170 <0.2 300 NA CB-3R 07/01/2013 5.4 26.58 18 449 0.42 -61 144 0.77 NM 858 10 NA NA <5 NA 4060 296 <5 NA 0.71 4.41 NA NA 160 0.239 1 300 NA CB-3R 11/06/2013 5.5 30.05 16 391 0.4 98 303 3.2 NM 603 11 NA NA <5 NA 17700 188 <5 NA <0.023 <1 NA NA 160 <0.2 270 NA CB-3R 04/16/2014 5.3 30.96 18 416 0.1 317 522 3.9 NM 702 11 NA NA <5 NA 4060 512 <5 NA 4 1.81 NA NA 160 <0.2 290 NA CB-3R 07/09/2014 5.2 31.84 1 19 540 1 0.25 279 1 484 9.6 1 NM 805 11 NA NA <5 NA 766 1130 13 NA 21 2.69 NA NA 150 0.216 360 NA CB-3R 07/23/2014 4.9 31.92 20 594 0.29 296 NM 7.82 NM 805 11 NA NA <5 27 1 766 1 1160 0.013 21 92 1 2.69 NA NA 150 0.216 360 NA CB-3R 11/03/2014 5.5 33.00 19 489 0.17 185 390 11.2 NM 589 12 NA NA 13 NA 4570 593 33 NA 8.6 <1 NA NA 160 <0.2 300 NA CB-3R 04/08/2015 5.0 35.46 16 541 0.7 102 307 49.7 NM 571 11 NA NA 20 17.1 6240 510 49 NA 3.2 <1 18.6 NA 180 <0.2 310 NA CB-3R 07/08/2015 4.5 35.33 18 644 1.75 152 357 5.97 NM 720 10 NA NA <5 29.9 2980 754 52 23 110 1.78 17.7 733 180 0.257 1 420 2.7 CB-3R 11/04/2015 5.0 35.61 17 537 3.97 138 343 31.4 NM 594 11 NA NA 12 30.8 9040 651 67 13 60 1.5 18.5 B2 637 180 <0.2 320 2.14 CB-3R 04/05/2016 4.8 30.51 17 616 0.38 304 509 9.87 NM 742 7.3 NA NA <5 15.7 1090 818 7 45 200 3.34 16.6 1 820 95 0.379 420 <0.3 CB-3R 07/06/2016 4.9 35.39 1 22 517 1 2.49 381 1 586 9.29 NM 760 6.7 NA NA <5 21.1 697 586 35 21 92 B2 3.58 16.2 723 140 0.321 370 0.428 CB-8 11/18/2010 NM 50.33 14 907 NM NM NM 0.92 NM 972 299 NA NA <5 NA 64.6 1 579 <5 NA 1.6 25 NA NA 108 <0.1 645 NA CB-8 04/12/2011 5.0 48.60 16 1135 2.89 -79 126 9.23 NM 1130 319 NA NA 11 NA 815 683 7.7 NA 1.8 24.2 NA NA 119 <0.1 617 NA CB-8 07/15/2011 5.1 48.84 18 1102 3.01 -21 184 6.95 NM 1060 271 NA NA 30.8 NA 370 696 41 B NA 1.4 21.2 NA NA 100 <0.1 700 NA CB-8 11/08/2011 5.1 51.53 17 1180 2.87 -83 122 2.67 NM 1360 295 NA NA 5.2 NA 145 786 <5 NA 1.7 25.1 NA NA 96.3 <0.1 1 764 NA CB-8 04/11/2012 5.1 49.75 15 824 3.04 -64 141 5.29 NM 1080 212 NA NA <5 NA 93.9 709 <5 NA 1.5 19.2 NA NA 1 113 <0.1 581 NA CB-8 07/17/2012 5.0 40.04 15 682 3.25 552 757 0.38 NM 841 162 NA NA <5 NA <50 552 <5 NA 1.9 15.2 NA NA 63.4 <0.1 407 NA CB-8 11/15/2012 5.0 45.68 1 15 885 1 2.37 362 1 567 7.24 NM 1140 220 NA NA <5 NA 80.6 652 <5 NA 1.8 13 NA NA 97.4 <0.1 516 NA CB-8 04/04/2013 5.0 45.40 15 876 2.54 99 304 4.35 NM 1090 170 NA NA <5 NA 63 1 679 <5 NA 1.6 18.1 NA NA 90 <0.2 730 NA CB-8 DUP 04/04/2013 5.0 45.40 15 876 2.54 99 304 4.35 NM 1130 170 NA NA <5 NA 97 695 <5 NA 1.6 18 NA NA 89 <0.2 740 NA CB-8 07/02/2013 5.5 44.44 15 719 2.9 20 225 1.77 NM 1060 140 NA NA <5 NA 73 647 <5 NA 1.6 16.5 NA NA 81 <0.2 600 NA CB-8 11/06/2013 5.1 45.46 15 747 2.4 456 661 5.6 NM 1230 160 NA NA <5 NA 225 764 <5 NA 2.1 17.5 NA NA 85 <0.2 1 490 NA CB-8 DUP 11/06/2013 5.1 45.46 15 747 2.4 456 661 5.6 NM 1230 160 NA NA <5 NA 180 765 <5 NA 2.1 17 NA NA 85 <0.2 490 NA CB-8 04/17/2014 5.2 46.92 15 850 1.9 365 570 4 NM 1570 190 NA NA <5 NA 115 857 <5 NA 2 18.6 NA NA 92 <0.2 610 NA 5.0 46.92 16 847 2 372 577 3.3 NM 1700 190 NA NA <5 NA 187 904 <5 NA 2 18.1 NA NA 97 <0.2 820 NA CO07/10/2014 B-8 DUP 07/10/2014 5.0 46.92 16 847 2 372 577 3.3 NM 1670 190 NA NA <5 NA 134 889 <5 NA 2 18.4 NA NA 97 <0.2 820 NA CB-8 11/03/2014 5.1. 49.40 16 884 1.07 502 707 2.26 NM 1860 210 NA NA <5 NA 63 968 <5 NA 1.8 20.3 NA NA 110 <0.2 750 NA P:\Duke Energy Prog ress.1026\102. Asheville Ash Basin GW Assessment Plan\19.EG_CSASU P\Tables\Table 1-4 Transition Zone Exceed ances Page 1 of 3 TABLE 1-4 TRANSITION ZONE EXCEEDANCES ASHEVILLE STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, ARDEN, NC Analytical Parameter PH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Boron Chloride Chromium (VI) Chromium (VI) Speciation Chromium Cobalt Iron Manganese Nickel Nitrate as N) Nitrate Selenium Sodium Strontium Sulfate Thallium Total Dissolved Solids Vanadium Reporting Units S.U. ft Deg C umhos/cm mg/L mV mV NTUs mg/L ug/L mg/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L mg-N/L mg/L ug/L mg/L ug/L mg/L ug/L mg/L ug/L 15A NCAC 02L Standard 6.5-8.5 NE NE NE NE NE NE NE NE 700 250 0.07A 0.07A 10 1* 300 50 100 10 10 20 NE NE 250 0.2* 500 0.3* Sample ID Sample Collection Date Field Parameters Analytical Results CB-8 04/07/2015 5.1 50.29 16 1021 1.49 122 327 2.16 NM 2350 220 NA NA <5 2.54 63 1120 <5 NA 1.9 18.6 8.58 NA 120 <0.2 710 NA CB-8 DUP 04/07/2015 5.1 50.29 16 1021 1.49 122 327 2.16 NM 2330 220 NA NA <5 2.76 76 1130 <5 NA 1.9 20.1 8.5 NA 120 <0.2 730 NA CB-8 07/06/2015 5.1 49.45 16 964 1.94 297 502 2.35 NM 2310 220 NA NA <5 2.68 46 1080 <5 1.8 7.7 19.5 8.06 655 140 <0.2 840 <0.3 CB-8 DUP 07/06/2015 5.1 49.45 16 964 1.94 297 502 2.35 NM 2320 220 NA NA <5 2.71 39 1080 <5 1.8 7.8 18.9 8.09 NA 140 <0.2 860 <0.3 CB-8 11/02/2015 5.5 50.93 16 991 1.7 479 684 1.3 NM 2640 220 NA NA <5 2.98 139 1160 <5 1.7 7.5 20.1 8.77 718 110 <0.2 930 0.379 CB-8 12/08/2015 5.3 49.32 14 947 1.35 226 431 1.6 0 2500 221 0.39 NA 0.94 B 3.5 <50 1100 3.1 1.9 NA 21 7.33 650 115 <0.1 652 <1 CB-8 01/20/2016 5.3 46.90 11 886 1 3.3 456 1 661 1.1 0 2300 200 0.27 NA <1 4.23 16 1200 2.39 1.6 NA 15.4 7.14 567 120 <0.2 580 <0.3 CB-8 04/06/2016 5.2 44.92 15 771 1.65 519 724 1.31 NM 2130 170 NA NA <5 3.59 1 48 1 1060 <5 1.9 1 8.5 13.7 6.79 489 110 <0.2 550 <0.3 CB-8 07/06/2016 5.1 46.42 20 743 1.55 387 592 2.83 NM 2200 150 NA NA <5 2.7 31 865 <5 2.3 10 B2 14.1 7.11 458 110 <0.2 560 0.354 GW-1D 05/07/2015 5.4 20.66 19 63 0.38 75 280 7.3 <0.5 <50 5 NA NA <1 7.77 951 369 2.5 0.524 NA <1 2.73 33 2.3 <0.2 35 0.451 GW-1D 05/28/2015 5.3 20.59 17 55 0.42 63 268 5.53 <0.5 <50 5.3 NA 0.046 <1 4.02 295 240 1.44 0.542 NA <1 2.52 29 2.9 <0.2 41 <0.3 GW-1D 09/02/2015 5.2 20.67 21 56 0.89 283 488 3.92 NM NA NA NA 0.042 B NA NA NA NA NA NA NA NA NA NA NA NA NA NA GW-11) 12/09/2015 5.3 20.19 16 37 2.3 208 413 0.12 NM <50 3.2 1 0.072 NA <0.5 1.7 72 72 1.3 0.74 NA <0.5 <5 24 1.3 <0.1 1 <25 <1 L3 GW-1D 01/18/2016 5.3 20.29 15 43 1 1.9 178 1 383 3.55 0 <50 4.2 0.091 NA <1 1.62 221 97 1.1 0.646 NA <1 2.09 25 1.4 <0.2 32 0.339 GW-4 12/14/2007 5.3 15.96 21 327 NM NM NM NM NM 528 10.7 NA NA 8.7 NA 3230 NA 11.4 NA 0.55 <10 NA NA 100 0.16 206 NA GW-4 04/21/2008 5.9 15.49 14 295 NM NM NM NM NM 586 9.8 NA NA 6.8 NA 231 143 9.9 NA 0.37 <10 NA NA 101 <0.1 182 NA GW-4 10/13/2008 5.4 16.04 16 327 NM NM NM NM NM 592 11.6 NA NA 5.3 NA 152 153 11.1 NA 0.51 <10 NA NA 116 0.10 226 NA GW-4 04/14/2009 5.5 15.35 15 306 NM NM NM NM NM 580 11.3 NA NA 5.6 NA 486 170 11.4 NA 0.49 <10 NA NA 112 <0.5 232 NA GW-4 10/16/2009 5.6 15.48 15 328 NM NM NM NM NM 563 13.1 NA NA 5.3 NA 233 176 10.5 NA 0.59 <10 NA NA 112 <0.5 228 NA GW-4 05/11/2010 5.7 15.48 14 287 NM NM NM NM NM 541 12.5 NA NA 7.6 NA 2710 216 8.6 NA 0.46 <10 NA NA 149 0.12 1 148 NA GW-4 02/19/2014 5.5 20.04 1 15 423 1 1.1 371 1 NM 8.9 NM 915 12 NA NA 7 1.56 422 369 16 NA NA 1.23 NA NA 160 0.24 270 NA GW-4 05/18/2015 5.5 23.26 18 390 1.09 83 288 7.15 <0.5 994 10 NA NA 4.93 <1 67 185 10.9 0.599 NA <1 15.1 170 150 <0.2 260 0.328 GW-5 12/14/2007 5.6 25.85 23 410 NM NM NM NM NM 413 11.9 NA NA 5.4 NA 3740 NA 5.2 NA 0.4 <10 NA NA 125 0.27 270 NA GW-5 04/21/2008 5.1 25.78 19 379 NM NM NM NM NM 398 11.9 NA NA 44.6 NA 46200 971 30.6 NA 1.2 13.9 NA NA 117 0.65 242 NA GW-5 10/13/2008 5.5 25.63 17 378 NM NM NM NM NM 407 14.9 NA NA <5 NA 182 189 <5 NA 1.2 <10 NA NA 120 0.28 246 NA GW-5 04/14/2009 5.5 25.80 19 320 NM NM NM NM NM 387 13.4 NA NA <5 NA 648 192 <5 NA 1.5 <10 NA NA 116 <0.5 248 NA GW-5 10/16/2009 5.6 25.66 17 361 NM NM NM NM NM 341 14 NA NA <5 NA 3090 189 <5 1 NA 1.3 <10 NA NA 105 <0.5 242 NA GW-5 05/11/2010 5.7 25.73 1 16 316 1 NM NM NM NM NM 351 12.3 NA NA <5 NA 1350 170 <5 NA 1.5 <10 NA NA 142 0.33 156 NA GW-5 02/20/2014 5.6 30.10 18 483 0.2 195 NM 71.3 NM 1100 11 NA NA 38 8.37 15600 363 21 NA NA 2.94 NA NA 200 0.75 280 NA MW-11) 05/11/2015 5.3 28.94 20 68 2.02 87 292 1.35 <0.5 <50 2.7 NA NA <1 15.4 107 248 7.67 1.4 NA <1 3.46 31 5.9 <0.2 47 <0.3 VW -ID 05/21/2015 5.5 29.02 18 71 0.65 62 267 3.54 0.5 <50 2.9 NA NA <1 9.45 360 221 4.78 1.2 NA <1 3.32 31 5.3 <0.2 41 <0.3 MW-1D 12/09/2015 5.3 28.43 10 53 1.1 205 410 1.78 0 <50 3.4 1 <0.03 NA <0.5 3 <50 45 2.8 1.3 NA <0.5 <5 31 2.6 <0.1 32 <1 L3 VW -ID 01/18/2016 5.5 27.07 4 56 1.6 102 307 2.1 0 <50 3.6 <0.03 NA <1 2.47 71 39 1 2.56 1.3 NA <1 2.69 28 1 3.5 <0.2 137 <0.3 MW-3D 05/07/2015 6.3 38.88 16 394 0.82 -13 192 35.9 4 531 10 NA NA 194 3.88 12000 633 135 0.039 NA <1 20.5 265 140 <0.2 250 1.75 MW-3D 05/21/2015 6.0 39.44 20 385 0.33 89 1 294 4.76 1 5.5 469 11 NA NA <1 <1 12700 560 3.89 0.029 NA <1 20.6 250 140 <0.2 270 <0.3 MW-3D 12/09/2015 5.4 36.77 17 555 0.45 110 315 4.93 3 470 11.6 <0.03 NA 0.72 47 22400 1000 101 0.04 NA <0.5 21.2 450 264 0.15 451 <1 L3 MW-31) 01/20/2016 4.6 33.77 10 444 0.49 49 254 9.74 1.25 639 10 <0.03 NA 1.2 85.2 1540 2620 47.3 16 NA 5.01 17.6 583 190 0.802 310 <0.3 MW-4D 04/28/2015 5.5 8.35 13 54 6.4 83 288 5.19 <0.5 <50 2.9 NA NA <1 12.2 582 204 1.48 1.7 NA <1 2.6 31 1.8 <0.2 35 0.379 MW-4D 05/21/2015 5.1 9.65 16 46 5.04 167 372 2.62 <0.5 <50 3.1 1 NA NA <1 5.28 34 87 1.07 1 1.6 NA I <1 2.49 27 1.5 <0.2 33 <0.3 VW-5D 05/07/2015 5.5 17.95 14 401 4.74 64 269 0.89 2.5 505 9 NA NA <1 48 10100 557 29.5 1.5 NA 3.41 24.8 252 150 <0.2 250 <0.3 VW-5D DUP 05/07/2015 5.5 17.95 14 401 4.74 64 269 0.89 2.5 505 9 NA NA <1 1 49.9 9590 569 33 1.5 NA 3 24.5 254 160 <0.2 250 <0.3 VW-5D 05/27/2015 4.0 18.49 17 389 1.7 93 1 298 2.82 1 NM 518 9.2 NA 0.021 <1 39.1 484 456 26.1 1 NA 2 22.7 267 190 <0.2 250 <0.3 MW-5D 09/02/2015 3.6 20.27 16 382 1.1 296 501 0.1 NM NA NA NA <0.006 NA NA NA NA NA NA NA NA NA NA NA NA NA NA VW-5D 12/09/2015 4.2 16.50 14 388 0.23 247 452 2.6 2 590 9 <0.03 1NA <0.5 24.8 2100 400 18.4 0.82 NA 4.1 22.3 290 152 <0.1 253 <1 L3 VW-5D 01/19/2016 4.0 16.41 10 392 0.4 312 517 0.47 2.5 638 9.6 <0.03 NA <1 24.3 2440 494 17.5 0.933 NA 3.96 21.5 305 190 <0.2 240 <0.3 MW-6D 04/15/2015 5.8 1.63 15 1 392 0.32 121 326 5.42 <0.5 1750 11 NA NA 1.25 7.47 406 1 5280 1.47 1 <0.01 NA I <1 9.7 337 1 140 0.236 1 280 0.363 MW-6D 05/21/2015 5.5 4.61 18 383 1 0.34 428 633 1.06 <0.5 1680 11 NA NA <1 3.85 23 4480 1.13 0.021 NA <1 8.95 302 150 <0.2 260 <0.3 MW-9D 05/04/2015 5.8 29.20 16 2175 3.7 37 242 5.57 2.5 4420 500 NA NA <1 1 26.9 3300 3670 14.9 0.439 NA 32.2 22.4 1760 250 0.327 1700 0.516 VW-9D 05/21/2015 5.5 29.16 18 2175 0.39 1 -138 67 1.99 1.5 4620 470 NA NA <1 17.8 2170 3730 10.4 0.083 NA 14.8 31 1890 270 <0.2 1700 <0.3 MW-9D 12/09/2015 5.2 28.81 13 1980 0.22 197 402 8.9 0 5400 M1 501 <0.03 NA <0.5 8.1 680 3400 M1 5.5 0.52 NA 19.8 28.3 1900 242 <0.1 1350 <1 1-3 MW-9D 01/20/2016 5.7 28.24 7 2034 0.5 142 347 0.9 0.5 5540 510 <0.03 1NA <1 7.06 278 3660 4.46 0.417 NA 20.7 30 1740 280 <0.2 1400 <0.3 MW-11D 02/12/2015 5.9 9.13 7 602 5.67 38 243 5.37 2 88 130 NA NA 1.07 4.21 1870 503 3.7 2.3 NA <1 33 383 22 <0.2 350 1.21 MW-11D 05/20/2015 5.3 8.88 18 595 3.4 91 296 4.01 <0.5 65 130 NA NA <1 1.11 91 159 1.11 2.4 NA <1 35.8 333 18 <0.2 380 <0.3 MW-11D 12/08/2015 5.2 8.52 13 565 3.95 250 455 4.29 0 52 1 147 <0.03 NA <0.5 <0.5 53 120 <0.5 2.8 NA 0.6 42 310 16 <0.1 348 <1 MW-11D 01/18/2016 5.1 8.25 4 590 1 4.4 280 1 485 1.3 0 <50 150 0.091 NA <1 <1 196 134 <1 2.7 NA <1 39.3 296 16 <0.2 300 <0.3 MW-11D 04/07/2016 5.1 9.19 14 601 4.71 279 484 1.2 NM <50 160 0.13 NA <1 <1 74 140 <1 2.4 NA <1 42.9 326 13 <0.2 380 <0.3 MW-11D 07/08/2016 5.4 10.15 17 620 3.56 S 369 574 2.82 0 <50 160 0.28 NA <1 <1 76 149 <1 3.1 NA <1 43.4 356 16 <0.2 440 0.354 MW-12D 03/31/2015 5.5 35.78 19 94 3.04 72 277 7.93 <0.5 <50 8 NA NA 3.35 11 433 480 5.9 1.4 1 NA <1 7.66 1 24 7.2 <0.2 56 0.388 MW-122 25/21/2015 5.2 35.67 19 78 3.13 102 307 6.84 <0.5 <50 9.9 NA NA <1 2.15 118 155 1.27 1.4 NA <1 4.8 20 7.3 0.674 50 <0.3 MW-12D 12/09/2015 4.8 35.11 15 72 3.27 192 397 8.38 0 <50 8.6 0.1 NA T. 1.5 240 120 1.8 1.5 NA 0.58 <5 21 6 <0.1 44 D6 <1 Ll MW-12D 0l/20/2016 5.3 34.23 7 72 3.3 268 473 1 6.2 0 <50 8.8 0.076 M1 NA 10.2 1.23 207 123 6.62 1.4 NA <1 3.79 21 7.1 <0.2 32 <0.3 P:\Duke Energy Progress.1026\102. Asheville Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 1-4 Transition Zone Exceedances Page 2 of 3 TABLE 1-4 TRANSITION ZONE EXCEEDANCES ASHEVILLE STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, ARDEN, NC Analytical Parameter PH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Boron Chloride Chromium (VI) Chromium (VI) Speciation Chromium Cobalt Iron Manganese Nickel Nitrate as N) Nitrate Selenium Sodium Strontium Sulfate Thallium Total Dissolved Solids Vanadium Reporting Units S.U. ft Deg C umhos/cm mg/L mV mV NTUs mg/L ug/L mg/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L mg-N/L mg/L ug/L mg/L ug/L mg/L ug/L mg/L ug/L 15A NCAC 02L Standard 6.5-8.5 NE NE NE NE NE NE NE NE 700 250 0.07A 0.07A 10 1* 300 50 100 10 10 20 NE NE 250 0.2* 500 0.3* Sample ID Sample Collection Date Field Parameters Analytical Results MW-13D 02/12/2015 6.8 27.93 8 223 3.65 -11 194 7.28 <0.5 <50 4.4 NA NA <1 4.11 515 563 1.05 0.236 NA <1 4.62 92 4 <0.2 110 1.67 MW-13D 05/20/2015 6.6 29.91 18 165 0.5 -168 37 2.93 2.5 <50 4.4 NA NA <1 6.75 2780 1300 1.08 0.126 NA <1 5.17 114 1.9 <0.2 93 0.503 MW-13D 12/08/2015 9.8 29.47 15 128 0.27 -71 134 4.71 0 <50 4.1 <0.03 NA <0.5 1.2 820 290 <0.5 <0.02 NA <0.5 8.8 450 1.1 <0.1 131 <1 MW-13D 01/20/2016 6.7 27.39 9 132 0.46 -21 184 2.16 2.5 <50 4.6 <0.03 NA <1 4.69 3270 747 <1 0.053 NA <1 5.59 265 1.2 <0.2 69 <0.3 MW-15D 03/04/2015 6.2 4.85 14 132 1.53 48 253 4.33 <0.5 <50 7.3 NA NA <1 <1 202 167 <1 0.666 NA <1 6.94 108 0.67 <0.2 76 0.333 MW-15D 05/20/2015 5.7 6.90 15 94 2.78 72 277 1.83 <0.5 <50 7.7 NA NA <1 <1 109 87 <1 0.787 NA <1 6.49 99 0.29 <0.2 72 0.502 MW-15D 12/08/2015 6.4 4.84 14 118 1 0.61 185 1 390 8.35 0 <50 5.7 0.099 M1 NA <0.5 <0.5 310 93 <0.5 0.52 NA <0.5 7.58 120 <1 <0.1 81 <1 MW-15D 01/18/2016 6.3 4.42 7 114 1.5 185 390 2.5 0 <50 11 0.17 NA <1 <1 1 143 130 <1 0.793 NA <1 7.05 118 0.32 <0.2 75 0.736 MW-15D 04/08/2016 6.2 5.65 12 127 1.33 208 413 1.72 NM <50 19 0.15 NA <1 <1 141 25 <1 0.823 NA <1 8.19 144 0.34 <0.2 91 0.726 MW-15D 07/08/2016 5.7 7.11 17 105 2.64 S 355 560 2.27 0 <50 13 0.24 M1 NA <1 <1 52 16 <1 1.2 NA <1 7.05 114 0.24 <0.2 82 0.639 MW-18D 05/04/2015 5.8 7.50 13 874 1.35 115 320 4.26 2.5 807 88 NA NA <1 7.35 3530 1530 2.87 0.102 NA <1 15.2 321 260 <0.2 620 0.523 MW-18D 05/28/2015 6.1 8.27 17 914 0.78 -126 79 5.04 2 793 94 NA NA <1 4.61 6960 2870 1.89 0.077 NA <1 12.9 298 280 <0.2 650 <0.3 MW-18D 12/08/2015 5.8 6.22 14 878 0.7 260 465 4.76 3.5 850 96 <0.03 NA <0.5 5.5 6100 1300 2.4 0.09 NA <0.5 14.6 270 276 <0.1 662 1<1 MW-18D 01/19/2016 6.0 6.22 8 890 2.4 115 320 4.2 2 884 97 <0.03 NA <1 4.44 1840 1290 2.49 0.077 NA <1 12.1 290 300 <0.2 610 <0.3 MW-18D 04/11/2016 5.7 7.45 13 917 1.32 170 375 9.54 NM 887 97 <0.03 NA <1 4.09 1 1620 1 1260 2.6 0.037 NA <1 13.8 291 280 <0.2 620 <0.3 MW-18D 07/07/2016 5.6 8.86 17 923 0.17 S 249 454 3.61 NM 875 99 <0.03 NA <1 3.4 3960 1290 2.24 0.082 NA <1 13.6 284 300 <0.2 660 <0.3 MW-21D 06/30/2015 6.2 2.77 19 301 4.6 -96 109 1.92 NM 79 21 NA <0.021 <1 1.66 4640 4560 1.25 0.199 NA 1.19 18.5 95 31 <0.2 170 <0.3 MW-21D 09/01/2015 6.4 3.95 28 1 6.9 224 429 2.12 4 95 24 NA <0.006 <1 <1 14900 2760 <1 0.022 M2 NA <1 15.8 77 24 <0.2 140 <0.3 MW-21D 12/08/2015 5.4 0.91 14 194 0.25 136 341 9.43 3 99 28.4 1 <0.03 NA <0.5 1.4 3000 820 1.1 0.052 NA <0.5 16.5 72 27.1 <0.1 128 <1 MW-21D 01/18/2016 5.2 0.60 9 185 0.51 152 357 8.42 1 95 29 <0.03 NA <1 1.09 2440 645 <1 0.042 NA <1 15.1 75 29 <0.2 110 <0.3 MW-21D 04/12/2016 5.1 1.99 15 185 0.75 170 375 9.05 NM 79 28 <0.03 NA <1 1.63 1980 B2 552 1.01 <0.01 NA <1 15 72 34 1<0.2 130 <0.3 MW-21D 07/07/2016 5.1 3.50 21 181 0.29 S 268 473 7.26 NM 87 28 <0.03 NA <1 1.13 1 4030 586 <1 0.018 NA <1 15.4 73 31 <0.2 100 <0.3 MW-22D 06/30/2015 5.3 8.61 18 142 3.06 108 313 4.27 NM <50 24 NA 0.484 <1 2.5 184 132 6.1 0.286 NA <1 10.8 44 11 <0.2 90 <0.3 MW-22D 09/01/2015 5.1 11.01 19 136 2.84 188 393 1.03 0 <50 26 NA 0.432 <1 1.65 34 92 5.93 0.253 NA <1 10.5 42 9.8 <0.2 75 0.354 MW-22D 12/08/2015 5.3 1.72 15 193 2.94 118 323 0.74 0 <50 49.9 0.73 NA 0.72 0.82 <50 130 7 0.51 NA <0.5 15.9 72 8.2 0.13 1 152 <1 MW-22D 01/18/2016 5.1 1.70 13 182 4.01 128 333 0.61 0 <50 45 1 0.57 NA <1 <1 39 118 6.76 0.444 NA <1 14.1 65 10 <0.2 98 <0.3 MW-22D 04/11/2016 5.1 6.85 15 163 3.52 155 360 1.11 NM <50 35 0.75 M1 NA <1 <1 62 107 5.49 1 0.29 NA <1 12.7 55 11 0.209 98 <0.3 MW-22D 07/07/2016 4.6 10.53 1 16 144 3.85 312 517 1.64 NM <50 30 0.64 M1 NA <1 <1 48 92 4.9 0.258 NA <1 11.9 48 11 <0.2 90 0.342 MW-23DL 06/30/2015 7.1 5.55 19 281 0.46 -264 -59 4.97 NM <50 4 NA <0.021 <1 <1 11200 76 <1 <0.01 NA <1 9.41 119 22 <0.2 160 <0.3 MW-23DL 09/03/2015 7.1 6.98 22 278 0.29 -133 72 3.94 4 <50 3.3 NA <0.006 <1 <1 12300 82 <1 0.01 M2 NA <1 7.12 114 15 <0.2 160 0.345 MW-23DL 12/09/2015 7.0 5.22 14 270 0.16 -125 80 8.7 NM <50 3.7 <0.03 NA <0.5 <0.5 12100 77 <0.5 <0.02 NA <0.5 6.5 120 16.7 <0.1 157 <1 L3 MW-23DL 01/19/2016 7.1 4.66 6 268 0.36 -98 107 2.52 2.5 <50 4 <0.03 NA <1 <1 11600 87 <1 0.02 NA <1 6.85 119 22 1 <0.2 150 <0.3 MW-23DU 06/24/2015 5.6 5.20 19 145 2.24 67 272 1.45 NM 87 7.3 NA 0.022 <1 36.9 162 865 2.76 0.435 NA <1 11 48 26 <0.2 84 <0.3 MW-23DU 09/03/2015 5.5 8.29 19 124 2.33 185 390 1.29 NM 85 6.3 NA 0.065 <1 1 8.35 222 1 507 1.5 1 0.32 NA I <1 9.4 38 23 <0.2 83 0.303 MW-23DU 12/09/2015 5.5 7.97 15 119 3.44 1 134 1 339 6.9 0 77 7 0.12 NA <0.5 6.7 260 340 1.3 0.5 NA <0.5 8.61 41 20.2 <0.1 71 <1 Ll MW-23DU 01/19/2016 5.6 7.62 11 109 4.29 126 331 4.84 0 84 8 0.15 NA <1 4.57 478 301 1.17 0.454 NA <1 8.62 38 20 <0.2 67 <0.3 MW-23DU DUP 01/19/2016 5.6 7.62 11 109 4.29 126 331 4.84 0 83 8.4 0.13 NA <1 4.68 429 297 1.14 0.45 NA <1 8.56 38 20 <0.2 83 <0.3 PZ-16 02/19/2014 5.8 48.71 18 443 3.8 331 NM 24.6 NM 874 8 NA NA 42 1.99 1850 156 21 NA NA 32.8 NA NA 140 <0.2 280 NA PZ-16 05/18/2015 5.8 49.02 21 326 3.95 114 319 21.7 <0.5 684 4.9 NA NA 11.5 1.31 877 83 5.35 2.1 NA 27 9.48 237 1 110 <0.2 210 1.29 Notes: Q - Bold highlighted concentration indicates exceedance of the 15A NCAC 02L Standard, Appendix 2, April 1, 2013. Deg C = Degrees Celsius my = Millivolts mg/L = Milligram per liter ORP = Oxidation Reduction Potential DO = Dissolved oxygen DUP = Duplicate NA = Not analyzed ug/L = Microgram per liter umhos/cm = Micro mhos per centimeter NE = Not established S.U. = Standard Unit ft = Feet mg - N/L = Milligram nitrogen per liter Spec Cond = Specific Conductance NM = Not measured < = Concentration not detected at or above the reporting limit = Interim Maximum Allowable Concentrations (IMACs) of the 15A NCAC 02L Standard, Appendix 1, April 1, 2013. B = Target analyte detected in method blank at or above the reporting limit. Target analyte concentration in sample is less than 10x the concentration in the method blank. B2 = Target analyte was detected in blank(s) at a concentration greater than 1/2 the reporting limit but less than the reporting limit. Analyte concentration in sample is valid and may be used for compliance purposes. D6 = The relative percent difference (RPD) between the sample and sample duplicate exceeded laboratory control limits. j = Indicates concentration reported below Practical Quantitation Limit (PQL), but above Method Detection Limit (MDL) and therefore concentration is estimated. Ll = Analyte recovery in the laboratory control sample (LCS) was above QC limits. Results may be biased high. L3 = Analyte recovery in the laboratory control sample (LCS) exceeded QC limits. Analyte presence below reporting limits in associated samples. Results unaffected by high bias. M1 = Matrix Spike Recovery exceeded QC limits. Batch accepted based on laboratory control sample (LCS) recovery. M2 = Matrix spike recovery was Low: the associated Laboratory Control Spike (LCS) was acceptable. S = Associated calibration check did not meet specified criteria. NTU = Nephelometric turbidity unit Temp = Temperature = NC DHHS Health Screening Level. Prepared by: BER Checked by: TDP P:\Duke Energy Progress. 1026\102. Asheville Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 1-4 Transition Zone Exceedances Page 3 of 3 TABLE 1-5 BEDROCK GROUNDWATER EXCEEDANCES ASHEVILLE STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, ARDEN, NC Analytical Parameter PH Water Level Temp Spec Coed DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Boron Chloride Chromium (VI) Chromium (VI) Speciation Chromium Cobalt Iron Manganese Selenium Sodium Strontium Sulfate Thallium Total Dissolved Solids Vanadium Reporting Units S.U. ft Deg C umhos/cm mg/L mV mV NTUs mg/L ug/L ug/L ug/L mg/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L mg/L ug/L mg/L ug/L mg/L ug/L 15A NCAC 02L Standard 6.5-8.5 NE NE NE NE NE NE NE NE 1* 10 700 250 0.07^ 0.07^ 10 1* 300 50 20 NE NE 250 0.2* 500 0.3* Sample ID Sample Collection Date Field Parameters Analytical Results Background AMW-3B 07/23/2014 6.5 7.97 18 88 2.89 163 NM 10.8 NM <1 <1 <50 0.58 NA NA <5 <5 131 17 <1 7.16 NA 1.7 <0.2 92 NA AMW-3B 11/04/2014 NM NM NM NM NM NM NM NM NM <1 <1 NA NA NA NA <1 <1 258 102 <1 8.21 NA NA <0.2 NA NA AMW-3B 05/12/2015 7.7 8.27 16 83 0.84 -69 136 6.86 <0.5 <1 <1 <50 <2.5 NA NA <1 <1 47 <5 <1 6.07 60 3.3 <0.2 72 0.344 AMW-3B 12/08/2015 6.1 8.24 14 73 4.3 40 245 8.56 0 <0.5 <0.5 <50 <1 0.21 NA <0.5 <0.5 <50 <5 <0.5 5.55 59 1.6 <0.1 95 <1 AMW-3B 01/20/2016 6.5 8.09 10 71 4.42 62 267 3.26 0 <1 <1 <50 0.61 0.18 NA <1 <1 20 <5 <1 5.05 58 1.3 <0.2 47 <0.3 AMW-3B 04/12/2016 6.4 8.05 14 71 4.6 69 274 1.78 NM <1 <1 <50 0.6 0.18 NA <1 <1 <10 B2 <5 <1 5.18 56 1.1 <0.2 67 <0.3 AMW-3B 04/28/2016 6.4 8.02 16 74 5.74 220 425 1.93 NM <1 <1 <50 0.6 NA NA <1 <1 NA NA <1 NA NA 0.99 <0.2 58 NA AMW-3B 07/08/2016 5.7 8.04 18 70 5.9 S 312 517 6.6 NM <1 <1 <50 0.65 0.22 NA <1 <1 13 <5 <1 5.12 57 1.1 <0.2 67 0.385 CB-9BR 04/27/2015 8.9 44.46 16 185 0.49 123 328 16.2 <0.5 <1 <1 <50 6.4 NA NA 8.25 <1 460 21 1.56 8.39 115 3.9 <0.2 130 3.03 CB-9BR 05/28/2015 6.5 48.57 16 135 0.36 69 274 10.8 <0.5 <1 <1 <50 6.4 NA 0.014 <1 <1 402 76 <1 4.76 98 1.8 <0.2 96 0.499 CB-9BR 09/08/2015 6.3 49.19 17 105 0.84 133 338 9.89 NM NA NA NA NA NA 0.12 NA NA NA NA NA NA NA NA NA NA NA CB-9BR 12/08/2015 6.6 47.95 14 100 0.55 65 270 7.06 NM <0.5 <0.5 L3 <50 6.1 0.092 NA 1.1 <0.5 460 46 <0.5 <5 68 1.4 <0.1 83 <1 CB-9BR 01/21/2016 6.4 47.30 10 99 0.7 63 268 8.3 0 <1 <1 <50 6.4 0.068 NA 9.08 <1 678 70 <1 3.47 71 1.2 <0.2 76 <0.3 CB-9BR 04/13/2016 6.1 46.93 15 98 0.52 57 262 8.71 NM <1 <1 <50 6.1 0.083 NA 1.3 <1 557 57 <1 3.48 65 1.5 <0.2 82 <0.3 CB-9BR 04/28/2016 6.2 47.21 15 99 0.5 197 402 8.58 NM <1 <1 <50 6.2 NA NA 1.18 <1 NA NA <1 NA NA 1.3 <0.2 66 NA CB-9BR 07/12/2016 6.1 47.58 19 91 0.65 259 464 9.1 0 <1 <1 <50 6.4 0.14 NA 1.5 <1 236 43 <1 4.27 65 1.3 <0.2 67 0.318 CB-9BR DUP 07/12/2016 6.1 47.58 19 91 0.65 259 464 9.1 0 <1 <1 <50 6.4 0.13 NA 1.85 <1 214 42 <1 3.47 65 1.3 <0.2 83 <0.3 Bedrock ABMW-5BR 04/13/2015 6.4 23.88 15 221 0.86 90 295 1.57 4 <1 <1 <50 7.9 NA NA <1 1.45 17300 128 <1 7.12 115 17 <0.2 160 <0.3 ABMW-5BR 05/27/2015 7.2 24.25 18 301 0.29 -245 -40 57.4 2 <1 <1 <50 8.7 NA 0.013 10.5 4.21 11400 157 <1 18.3 210 19 <0.2 180 <0.3 ABMW-5BR 09/01/2015 9.4 25.35 21 287 0.7 -66 139 22.2 NM NA NA NA NA NA <0.006 NA NA NA NA NA NA NA NA NA NA NA ABMW-11BR 04/14/2016 8.4 111.54 17 288 0.38 20 225 33.7 NM <1 <1 <50 3.2 <0.03 NA 87.2 2.22 3470 85 <1 19.3 104 40 <0.2 190 2.31 ABMW-11BR 07/11/2016 8.1 83.95 22 282 0.36 90 295 9.7 NM <1 <1 <50 3.4 <0.03 NA 11.1 <1 766 98 <1 16.5 102 36 0.396 170 0.69 AMW-1B 08/05/2014 7.1 41.06 17 449 0.23 -102 NM 19.4 NM <1 <1 433 9.7 NA NA <5 <5 4990 392 <1 28 NA 130 <0.2 330 NA AMW-1B DUP 08/05/2014 7.1 41.06 17 449 0.23 -102 NM 19.4 NM <1 <1 433 9.7 NA NA <5 <5 4990 396 <1 28.3 NA 130 <0.2 340 NA AMW-1B 05/19/2015 7.1 41.41 18 430 0.41 -230 -25 8.96 3 <1 <1 422 9.3 NA NA <1 <1 6660 362 <1 22.1 85 120 <0.2 280 <0.3 AMW-1B 12/09/2015 7.1 40.90 16 374 0.2 -134 71 9.77 3 <0.5 <0.5 360 9.1 <0.03 NA <0.5 <0.5 6600 360 <0.5 24.5 71 109 <0.1 273 <1 AMW-1B DUP 12/09/2015 7.1 40.90 16 374 0.2 -134 71 9.77 3 <0.5 <0.5 350 9.1 <0.03 NA <0.5 <0.5 6200 350 <0.5 24.7 70 109 <0.1 246 <1 AMW-1B 01/20/2016 7.2 40.86 14 394 0.21 -124 81 9 4.5 <1 <1 393 9.8 <0.03 M1 NA <1 <1 8110 332 <1 21.2 83 120 <0.2 250 <0.3 AMW-1B DUP 01/20/2016 7.2 40.86 14 394 0.21 -124 81 9 4.5 <1 <1 402 9.9 <0.03 NA <1 <1 7580 353 <1 22.2 83 130 <0.2 260 <0.3 CB-4B 11/18/2010 NM 23.34 13 315 NM NM NM 2.26 NM <0.5 <5 <50 7.9 NA NA <5 NA 429 35.1 <10 NA NA 100 <0.1 219 NA CB-4B 04/10/2012 6.5 22.98 15 363 0.56 -58 147 2.62 NM <0.5 <5 <50 7.1 NA NA <5 NA 338 23.1 <10 NA NA 88.8 <0.1 198 NA CB-4B 07/16/2012 7.1 23.29 20 285 2.24 -41 165 1.87 NM <0.5 <5 <50 7.1 NA NA <5 NA 643 32.8 <10 NA NA 63.2 <0.1 169 NA CB-4B 11/15/2012 7.2 23.23 13 328 0.65 -12 193 1.27 NM <0.5 <5 <50 7 NA NA <5 NA 569 31.6 <10 NA NA 54.7 <0.1 146 NA CB-4B DUP 11/15/2012 7.2 23.23 13 328 0.65 -12 193 1.27 NM <0.5 <5 <50 6.9 NA NA <5 NA 498 30.8 <10 NA NA 55.9 <0.1 147 NA CB-4B 04/03/2013 7.1 22.98 14 302 0.34 -14 191 1.54 NM <1 7.31 <50 6.2 NA NA <5 NA 483 39 <1 NA NA 61 <0.2 170 NA CB-4B 07/01/2013 6.2 23.22 17 296 1.18 -32 173 1.76 NM <1 2.7 <50 5.7 NA NA <5 NA 335 42 <1 NA NA 63 <0.2 170 NA CB-48 11/06/2013 6.9 23.67 15 286 0.4 37 242 5.1 NM <1 5.39 <50 6.5 NA NA <5 NA 398 45 <1 NA NA 63 <0.2 170 NA CB-4B 04/16/2014 7.2 23.66 14 348 0.3 18 223 1.9 NM <1 10.2 <50 6.6 NA NA <5 NA 529 42 <1 NA NA 68 <0.2 190 NA CB-4B 04/08/2015 7.1 24.35 18 257 0.74 -7 198 2.42 NM <1 1.62 <50 6.2 NA NA <5 <1 625 43 <1 16.4 NA 62 <0.2 180 NA CB-4B 07/07/2015 6.9 24.80 19 263 4.04 174 379 3.1 1 NM I <1 11 j <50 1 6.2 j NA I NA <5 j <1 1 315 1 41 1 <1 19 144 70 <0.2 170 0.699 CB-4B 11/04/2015 7.0 23.93 15 564 0.41 -183 22 1.91 NM <1 <1 <50 6.9 NA NA <5 <1 1 638 65 <1 35.4 B2 155 120 <0.2 220 0.353 CB-4B 12/09/2015 7.3 24.08 13 484 0.29 -130 75 2.57 0.5 <0.5 1.3 <50 6.2 <0.03 NA <0.5 B <0.5 1 1400 60 <0.5 34.1 160 75.5 <0.1 199 <1 P:\Duke Energy Progress. 1026\102. Asheville Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 1-5 Bedrock GW Exceedances Page 1 of 4 TABLE 1-5 BEDROCK GROUNDWATER EXCEEDANCES ASHEVILLE STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, ARDEN, NC Analytical Parameter PH Water Level Temp Spec Coed DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Boron Chloride Chromium (VI) Chromium (VI) Speciation Chromium Cobalt Iron Manganese Selenium Sodium Strontium Sulfate Thallium Total Dissolved Solids Vanadium Reporting Units S.U. ft Deg C umhos/cm mg/L mV mV NTUs mg/L ug/L ug/L ug/L mg/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L mg/L ug/L mg/L ug/L mg/L ug/L 15A NCAC 02L Standard 6.5-8.5 NE NE NE NE NE NE NE NE 1* 10 700 250 0.07^ 0.07^ 10 1* 300 50 20 NE NE 250 0.2* 500 0.3* Sample ID Sample Collection Date Field Parameters Analytical Results CB-4B 01/19/2016 7.1 23.93 8 517 0.4 -106 99 1.68 1.5 <1 <1 <50 6.6 <0.03 NA <1 <1 1240 67 <1 18.2 129 69 <0.2 280 <0.3 CB-4B 04/05/2016 7.0 24.48 13 236 0.42 -11 195 2.18 NM <1 2.51 <50 6.5 NA NA <5 <1 723 59 <1 16.6 133 60 <0.2 140 <0.3 CB-4B 07/05/2016 7.1 25.45 23 241 0.98 51 256 4.9 NM <1 <1 <50 6.8 NA NA <5 <1 369 19 <1 15.1 128 62 <0.2 150 0.525 CB-8BR 05/11/2015 6.7 48.76 16 458 4.51 44 249 5.39 <0.5 <1 <1 343 47 NA NA 3.83 <1 311 633 3.93 8.79 251 34 <0.2 290 0.678 CB-8BR 05/22/2015 6.8 48.55 15 352 1.89 -55 150 9.14 <0.5 <1 <1 171 26 NA NA <1 <1 601 473 1.4 7.74 178 31 <0.2 210 0.437 CB-8BR 12/08/2015 7.2 48.65 15 269 0.32 -37 168 3.07 0.5 <0.5 <0.5 78 14 <0.03 NA <0.5 <0.5 840 420 <0.5 8.14 150 24.8 <0.1 212 <1 CB-8BR 01/20/2016 7.1 47.03 7 275 3.6 -19 187 8.8 0.5 <1 <1 87 14 <0.03 NA <1 <1 897 452 <1 7.45 148 26 <0.2 180 <0.3 GW-1BR 05/14/2015 7.0 23.71 19 162 2.42 57 262 4.72 1.5 <1 <1 <50 1.3 NA NA <1 <1 1780 93 <1 6.02 84 8.5 <0.2 110 0.575 GW-1BR 05/27/2015 7.8 22.67 20 171 2.13 -211 -6 11.3 <0.5 <1 <1 <50 1.5 NA 0.059 <1 <1 946 66 <1 6.25 88 8.3 <0.2 110 1.08 GW-1BR 09/01/2015 9.0 22.61 19 186 0.6 -56 149 1.5 NM NA NA NA NA NA 0.009 B NA NA NA NA NA NA NA NA NA NA NA GW-1BR 12/09/2015 8.7 22.30 15 163 0.5 -191 14 3.5 NM <0.5 1.1 <50 1.7 <0.03 NA <0.5 <0.5 1100 56 <0.5 8.33 98 3.7 <0.1 103 <1 Ll GW-1BR 01/18/2016 7.0 22.34 6 155 1 -81 124 2.43 NM <1 <1 <50 1.5 <0.03 NA <1 <1 1190 65 <1 7.28 88 5.2 <0.2 110 0.317 GW-2 12/14/2007 5.7 43.51 14 261 NM NM NM NM NM <5 8.3 322 <20 NA NA 31.1 NA 33200 NA <10 NA NA 69.1 0.10 200 NA GW-2 04/21/2008 5.4 43.26 15 266 NM NM NM NM NM <5 <5 386 17.1 NA NA <5 NA 7380 171 <10 NA NA 63.3 0.13 182 NA GW-2 10/13/2008 5.6 43.42 15 333 NM NM NM NM NM <5 <5 400 36.4 NA NA <5 NA 357 66.5 <10 NA NA 70.2 <0.1 204 NA GW-2 04/14/2009 5.5 43.36 15 361 NM NM NM NM NM <5 <5 418 55.5 NA NA <5 NA 286 90.1 <10 NA NA 66 <0.5 294 NA GW-2 10/16/2009 5.7 43.16 16 518 NM NM NM NM NM <5 <5 431 99 NA NA 7 NA 141 130 <10 NA NA 66.4 <0.5 312 NA GW-2 05/11/2010 5.4 42.90 16 620 NM NM NM NM NM <5 <5 377 151 NA NA <5 NA 460 141 <10 NA NA 70.1 <0.1 370 NA GW-2 02/18/2014 5.3 42.87 16 816 2.8 339 NM 4.32 NM <1 1 964 170 NA NA <5 6.9 56 1820 <1 NA NA 78 <0.2 600 NA GW-2 05/14/2015 5.5 42.95 18 900 2.99 77 282 6.81 <0.5 <1 1.02 1050 230 NA NA <1 11.9 115 1780 1.01 6.92 556 85 <0.2 720 <0.3 GW-2 12/10/2015 5.6 42.66 16 1012 2.7 246 451 4.49 0 <0.5 2.4 1400 222 0.072 NA 23 15.3 280 1700 2.4 <25 520 118 0.12 706 1.8 GW-2 01/20/2016 5.6 42.72 16 811 2.1 -97 108 9.98 NM <1 1.82 1720 210 0.05 M1 NA 52 11.5 472 2140 <1 6.83 675 120 <0.2 660 0.581 MW-1BR 05/11/2015 6.8 23.36 18 129 2.53 44 249 9.81 <0.5 <1 <1 <50 1.6 NA NA <1 <1 1370 64 <1 9.19 78 7.8 <0.2 110 <0.3 MW-1BR 05/21/2015 7.0 23.31 19 135 1.55 53 258 3.9 <0.5 <1 <1 <50 1.2 NA NA <1 <1 713 77 <1 6.83 75 8.2 <0.2 110 0.322 MW-1BR 12/09/2015 6.4 23.12 9 99 1 19 224 9.71 2 <0.5 <0.5 <50 1.8 <0.03 NA <0.5 <0.5 2500 73 <0.5 5.47 64 7.1 <0.1 73 <1 L3 MW-1BR 01/18/2016 6.6 22.59 5 102 1.1 -13 192 6.2 1.5 <1 <1 <50 1.7 <0.03 NA <1 <1 3020 75 <1 5.22 63 7.5 <0.2 56 <0.3 MW-2BR 04/13/2015 9.0 31.01 15 270 0.2 104 309 2.44 <0.5 <1 <1 67 5.7 NA NA 2.1 <1 95 25 <1 16.5 79 59 <0.2 200 0.372 MW-2BR 05/21/2015 8.8 31.34 15 274 0.19 67 272 2 <0.5 <1 <1 64 5.4 NA NA <1 <1 61 25 <1 16.8 75 56 <0.2 180 0.373 MW-5BR 05/04/2015 8.1 17.89 21 376 0.12 36 241 14.5 4 <1 <1 418 6.6 NA NA <1 <1 18800 172 <1 15.5 318 120 <0.2 250 0.368 MW-5BR 05/28/2015 6.9 19.23 16 422 0.29 26 231 4.6 1.5 <1 <1 454 8.4 NA NA <1 <1 27900 244 <1 18.1 328 140 0.287 260 <0.3 MW-5BR 12/09/2015 7.0 15.88 14 380 0.27 -115 90 4.85 1.5 <0.5 <0.5 390 7.7 <0.03 NA <0.5 <0.5 31500 210 <0.5 17.1 250 108 <0.1 245 <1 L1 MW-5BR 01/19/2016 7.0 15.79 10 378 0.3 -105 100 4.95 4 <1 <1 360 8.9 <0.03 NA <1 <1 29800 221 <1 16.9 211 120 <0.2 230 <0.3 MW-6BR 02/22/2016 8.9 1.50 15 197 0.54 -84 121 1.04 0 <1 <1 112 3.9 0.053 NA <1 <1 25 <5 <1 22.2 35 48 <0.2 140 <0.3 MW-9BR 05/04/2015 7.2 31.98 19 1022 4.39 -22 183 14.9 <0.5 <1 <1 490 190 NA NA <1 <1 1570 247 <1 24.7 697 86 <0.2 760 0.379 MW-9BR 05/21/2015 6.7 31.90 20 1039 3.01 -107 98 15.5 1.5 <1 <1 530 200 NA NA <1 <1 2540 317 <1 24.6 746 87 <0.2 860 <0.3 MW-9BR 12/09/2015 7.0 31.28 14 1259 0.21 -119 86 3.37 2.5 <0.5 0.84 960 313 <0.03 NA <0.5 0.76 5100 430 <0.5 32.2 1100 106 <0.1 914 <1 L3 MW-9BR 01/20/2016 7.2 30.67 5 1367 0.7 -123 82 3 2 <1 <1 1160 300 <0.03 NA <1 <1 7740 631 <1 30.9 1100 120 <0.2 890 <0.3 MW-9BR 04/25/2016 7.1 31.05 18 1492 0.23 -77 128 5.47 NM <1 <1 1570 330 NA NA <1 <1 NA NA <1 NA NA 130 <0.2 1100 NA MW-13BR 03/03/2015 6.4 28.00 11 104 4.55 8 213 8.04 <0.5 <1 <1 <50 4.6 NA NA <1 1.7 335 268 <1 2.64 31 2.1 <0.2 67 0.879 MW-13BR DUP 03/03/2015 6.4 28.00 11 104 4.55 8 213 8.04 <0.5 <1 <1 <50 4.6 NA NA <1 1.74 319 269 <1 2.68 30 2 <0.2 58 0.82 MW-13BR 05/20/2015 5.4 30.03 18 52 2.53 53 258 3.16 <0.5 <1 <1 <50 4.4 NA NA <1 <1 76 105 <1 2.23 18 1.6 <0.2 34 <0.3 MW-13BR 12/08/2015 5.8 29.57 15 43 2.95 148 353 0.78 0 <0.5 <0.5 L3 <50 4.8 <0.03 NA <0.5 0.55 <50 33 <0.5 <5 16 1.7 <0.1 52 <1 MW-13BR 01/20/2016 5.5 27.43 9 48 3.54 100 305 0.29 0 <1 <1 <50 5 0.25 NA <1 <1 22 25 <1 2.26 16 1.8 <0.2 <25 <0.3 MW-14BR 02/13/2015 7.0 16.44 8 524 4.71 9 214 2.6 <0.5 <1 <1 421 6.9 NA NA <1 <1 76 216 16.5 13.6 295 160 <0.2 350 0.528 P:\Duke Energy Progress. 1026\102. Asheville Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 1-5 Bedrock GW Exceedances Page 2 of 4 TABLE 1-5 BEDROCK GROUNDWATER EXCEEDANCES ASHEVILLE STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, ARDEN, NC Analytical Parameter PH Water Level Temp Spec Coed DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Boron Chloride Chromium (VI) Chromium (VI) Speciation Chromium Cobalt Iron Manganese Selenium Sodium Strontium Sulfate Thallium Total Dissolved Solids Vanadium Reporting Units S.U. ft Deg C umhos/cm mg/L mV mV NTUs mg/L ug/L ug/L ug/L mg/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L mg/L ug/L mg/L ug/L mg/L ug/L 15A NCAC 02L Standard 6.5-8.5 NE NE NE NE NE NE NE NE 1* 10 700 250 0.07^ 0.07^ 10 1* 300 50 20 NE NE 250 0.2* 500 0.3* Sample ID Sample Collection Date Field Parameters Analytical Results MW-14BR 05/20/2015 6.8 13.74 16 595 1.83 65 270 3.05 <0.5 <1 <1 386 6.3 NA NA <1 <1 31 31 13.8 9.86 307 170 <0.2 390 <0.3 MW-14BR 12/09/2015 6.7 12.25 13 604 1.3 227 432 6.22 0 <0.5 <0.5 360 5.4 0.07 NA <0.5 <0.5 52 44 9.3 9.46 350 210 <0.1 425 <1 L3 MW-14BR 01/18/2016 6.9 10.52 2 598 3.3 160 365 0.8 0 <1 <1 352 6.2 0.15 NA <1 <1 57 16 9.05 8.99 282 190 <0.2 390 0.333 MW-16BR 03/11/2015 6.3 9.67 13 529 0.43 -63 142 9.7 3 <1 <1 109 120 NA NA <1 3.49 60100 852 <1 21.8 290 31 <0.2 290 <0.3 MW-16BR 05/28/2015 5.9 10.10 15 515 0.12 -165 40 4.14 2.5 <1 <1 117 120 NA NA <1 1.61 56900 715 <1 19.5 266 36 <0.2 310 <0.3 MW-16BR 12/08/2015 6.0 8.77 15 532 0.3 -13 192 2.97 3 <0.5 <0.5 L1 230 118 <0.03 NA <0.5 0.62 53900 720 <0.5 22.2 280 38.1 <0.1 345 <1 MW-16BR 01/19/2016 6.0 8.81 5 556 0.7 -37 168 1.2 2.5 <1 <1 216 130 <0.03 NA <1 <1 58200 757 <1 20.2 278 39 <0.2 310 <0.3 MW-16BR 04/08/2016 6.0 9.49 13 511 0.19 37 242 0.85 NM <1 <1 140 120 <0.03 NA <1 <1 52500 678 <1 21.1 259 35 <0.2 280 <0.3 MW-16BR 07/08/2016 6.0 10.44 16 525 0.21 S 69 274 0.9 6 <1 <1 150 120 <0.6 D3 NA <1 <1 59000 753 <1 21.8 280 41 <0.2 300 <0.3 MW-18BR 05/04/2015 5.9 7.92 16 923 1.4 123 328 5.39 <0.5 <1 <1 892 97 NA NA <1 <1 92 227 1.4 15.5 443 260 <0.2 660 0.554 MW-18BR 05/28/2015 5.7 8.45 17 900 0.81 2 207 1.95 <0.5 <1 <1 851 96 NA NA <1 1.02 125 313 <1 15.2 415 290 <0.2 660 <0.3 MW-18BR 12/08/2015 5.6 6.75 13 889 0.6 297 502 0.99 0 <0.5 <0.5 L3 900 96.4 0.065 NA <0.5 0.98 <50 200 0.59 15.5 400 278 <0.1 659 <1 MW-18BR 01/19/2016 5.8 6.70 8 913 0.5 191 396 0.9 0 <1 <1 974 99 0.056 M1 NA <1 <1 10 221 <1 14 436 290 <0.2 630 <0.3 MW-18BR 04/11/2016 5.6 7.80 14 932 0.54 147 352 0.43 NM <1 <1 906 97 0.043 NA <1 1.14 14 216 <1 14.6 413 290 <0.2 650 <0.3 MW-18BR 07/07/2016 5.6 8.90 19 903 0.42 S 349 554 1.06 NM <1 <1 927 98 <0.03 NA <1 2.1 <10 326 <1 14.3 419 300 <0.2 650 0.34 MW-22BR 06/30/2015 6.4 14.56 17 291 0.78 -130 75 5.69 NM <1 <1 <50 38 NA <0.021 <1 <1 16000 324 <1 16 121 25 <0.2 170 <0.3 MW-22BR 09/01/2015 6.5 15.97 20 294 0.51 -47 158 2.63 5.5 <1 <1 <50 36 NA <0.006 <1 <1 18800 302 <1 18.1 105 22 <0.2 150 0.347 MW-22BR 12/08/2015 6.0 12.53 14 275 0.28 5 210 0.36 3.5 <0.5 <0.5 L3 <50 49.8 <0.03 NA <0.5 <0.5 14400 250 <0.5 18.8 97 18.6 <0.1 180 <1 MW-22BR 01/18/2016 5.9 12.30 13 259 0.18 23 228 3.74 5.5 <1 <1 <50 51 <0.03 NA <1 <1 14700 262 <1 17 98 20 <0.2 140 <0.3 MW-22BR 04/11/2016 5.9 13.70 15 266 0.13 52 257 9.72 NM <1 <1 <50 49 <0.03 NA <1 <1 16900 310 <1 16 101 19 <0.2 160 <0.3 MW-22BR 07/07/2016 5.4 15.60 17 254 0.19 S 82 287 8.47 NM <1 <1 <50 48 <0.03 NA <1 <1 14500 316 <1 15.3 98 19 <0.2 150 <0.3 PZ-1D 12/14/2006 7.0 43.00 16 1 NM NM NM NM NM 10.8 <2 272 20 NA NA <2 NA 4540 1230 <2 92 NA 250 4.4 595 NA PZ-17D 12/14/2006 5.9 50.61 14 0 NM NM NM NM NM <2 <2 762 6.7 NA NA <2 NA 2750 47.9 44.6 9 NA 110 <4 267 NA PZ-17D 06/12/2007 7.3 50.51 16 403 NM NM NM NM NM <0.1 1.5 677 8.44 NA NA 0.14 NA 200 60.8 46.7 NA NA 121 0.053 305 NA PZ-17D 02/18/2014 5.8 53.04 15 518 0.35 298 NM 6.4 NM <1 <1 967 11 NA NA 8 <1 369 49 20.1 NA NA 160 <0.2 340 NA PZ-17D 05/15/2015 5.8 56.41 16 481 0.77 39 244 9.74 <0.5 <1 <1 889 9.4 NA NA 8.66 <1 450 48 22.2 11.1 315 140 <0.2 320 <0.3 PZ-17D 12/09/2015 5.6 54.94 15 439 0.65 165 370 5.59 0 <0.5 <0.5 840 8 0.084 NA 2.4 0.67 220 17 25.9 10.6 310 137 <0.1 297 <1 L1 PZ-17D 01/20/2016 6.1 54.37 11 376 0.53 -103 102 9.92 0 <1 <1 846 8.5 0.12 NA 47.5 1.19 363 31 20.3 10.1 281 150 <0.2 290 0.427 PZ-17D 04/26/2016 5.9 56.68 16 448 3.74 255 460 5.8 NM <1 <1 869 7.1 NA NA <1 4.17 NA NA 29.2 NA NA 140 <0.2 290 NA PZ-17S 12/14/2006 6.3 28.99 14 0 NM NM NM NM NM <2 <2 102 2.8 NA NA <2 NA <20 315 14.8 3.8 NA 49 <4 125 NA PZ-17S 06/12/2007 7.2 28.64 15 146 NM NM NM NM NM 0.57 0.47 66.5 3.5 NA NA <16 NA 319 139 18.3 NA NA 36.1 0.22 95 NA PZ-17S 05/15/2015 5.4 27.44 17 71 5.89 173 378 1.38 <0.5 <1 <1 <50 1.9 NA NA <1 <1 17 24 11 2.74 122 19 <0.2 44 <0.3 PZ-17S 12/09/2015 4.9 27.00 14 63 6.87 157 362 1.76 0 <0.5 <0.5 <50 2.1 0.12 NA <0.5 0.76 <50 20 9.9 <5 120 16.5 <0.1 42 <1 L3 PZ-17S 01/20/2016 5.7 27.14 11 53 6.3 164 369 1.82 0 <1 <1 <50 1.8 0.12 NA <1 <1 40 19 6.48 2.62 96 14 <0.2 35 <0.3 Water Supply Wells AS-4 02/06/2014 6.2 13.45 11 334 0.7 85 NM 33.3 NM NA <1 108 NA NA NA NA NA 19200 783 NA NA NA NA <0.2 NA NA AS-4 08/05/2014 4.7 NM 16 436 2.44 257 NM 29.2 NM <1 1.44 <50 80 NA NA <5 116 4110 1670 <1 34.5 NA 79 <0.2 270 NA AS-4 02/11/2016 4.5 12.97 12 454 3.82 381 586 9.83 NM <1 1.62 <50 76 <0.03 M1 NA <1 128 2450 1880 <1 39 203 84 <0.2 280 <0.3 AS-5 (Duke) 02/09/2015 NM NM NM NM NM NM NM NM NM <1 <1 <50 8.1 NA NA <5 <1 87 13 <1 5.31 57 1.4 <0.2 54 <0.3 AS-5 (Vendor) 02/09/2015 5.1 NM 15 73 6.2 NM NM 1.1 NM <1 <5 <100 7.75 <10 NA <1 <1 84 12 <5 5.1 60 1.32 <0.1 44 <0.3 AS-6 02/11/2016 6.9 8.70 13 369 0.19 -153 52 22.2 NM <1 <1 79 56 <0.03 NA <1 <1 17300 491 <1 15.9 116 19 <0.2 220 <0.3 AS-9 (Duke) 02/09/2015 NM NM NM NM NM NM NM NM NM <1 <1 <50 2.5 NA NA <5 <1 <10 <5 <1 6.97 77 5.3 <0.2 93 <0.3 AS-9(Vendor) 02/09/2015 6.2 NM 16 128 4.1 NM NM <1 NM <1 <5 <100 2.17 <10 NA <1 <1 <50 <5 <5 6.4 84 4.68 <0.1 81 <0.3 AS-9 05/12/2016 6.6 NM 15 135 3.89 195 400 0.28 NM <1 <1 <50 2.3 0.077 NA <1 <1 12 <5 <1 7.83 76 4.5 <0.2 84 <0.3 AS-11(Duke) 03/04/2015 NM NM NM NM NM NM NM NM NM <1 <1 <50 55 NA NA <5 <1 <10 5 <1 72 226 330 <0.2 590 <0.3 AS-11(Vendor) 03/04/2015 8.6 NM 15 713 2 NM NM <1 NM <1 <1 <500 56 <10 NA <1 <1 <50 <5 <1 72 210 340 <1 560 <5 AS-11 (Duke) 07/31/2015 NM NM NM NM NM NM NM NM NM <1 <1 <50 52 NA NA <5 <1 59 12 <1 68.5 213 300 <0.2 570 <0.3 P:\Duke Energy Progress. 1026\102. Asheville Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 1-5 Bedrock GW Exceedances Page 3 of 4 TABLE 1-5 BEDROCK GROUNDWATER EXCEEDANCES ASHEVILLE STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, ARDEN, NC Analytical Parameter PH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Boron Chloride Chromium (VI) Chromium (VI) Speciation Chromium Cobalt Iron Manganese Selenium Sodium Strontium Sulfate Thallium Total Dissolved Solids Vanadium Reporting Units S.U. ft Deg C umhos/cm mg/L mV mV NTUs mg/L ug/L ug/L ug/L mg/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L mg/L ug/L mg/L ug/L mg/L ug/L 15A NCAC 02L Standard 6.5-8.5 NE NE NE NE NE NE NE NE 1* 10 700 250 0.07^ 0.07^ 10 1* 300 50 20 NE NE 250 0.2* 500 0.3* Sample ID Sample Collection Date Field Parameters Analytical Results AS-11 05/09/2016 8.5 NM 17 838 1.15 17 222 0.48 NM <1 <1 54 54 <0.03 NA <1 <1 25 10 <1 64.6 232 320 <0.2 570 <0.3 AS-13(Duke) 06/26/2015 NM NM NM NM NM NM NM NM NM <1 <1 <50 80 NA NA <5 <1 445 5 <1 75.7 359 380 <0.2 690 <0.3 AS-13 (Vendor) 06/26/2015 7.6 NM 15 990 0.03 NM NM 1.9 NM <0.5 <0.5 38.6 83.9 <0.03 NA <0.5 <0.5 108 5.1 <0.5 77.9 342 356 <0.1 696 <1 AS-13 05/09/2016 8.1 114.00 16 1042 0.44 17 222 1.06 NM <1 <1 63 85 <0.03 NA <1 <1 295 <5 <1 74.5 373 420 <0.2 710 0.47 AS-14 (Duke) 06/26/2015 NM NM NM NM NM NM NM NM NM <1 <1 333 9.7 NA NA <5 <1 18 231 <1 18 404 240 <0.2 520 <0.3 AS-14 (Vendor) 06/26/2015 7.6 NM 20 709 7.79 NM NM <1 NM <0.5 <0.5 325 10.4 <0.03 NA <0.5 <0.5 <50 240 <0.5 18.8 426 243 <0.1 526 <1 AS-14 (Duke) 12/29/2015 NM NM NM NM NM NM NM NM NM <1 <1 312 9.6 NA NA <5 <1 509 185 <1 18.9 438 240 <0.2 520 <0.3 AS-14 (Vendor) 12/29/2015 7.4 NM 15 704 1.04 NM NM 3.8 NM <0.5 <0.5 310 10.3 <0.03 NA <0.5 <0.5 568 200 <0.5 20.7 491 228 <0.1 504 <1 AS-14 05/11/2016 7.6 NM 15 713 4.63 48 253 0.16 NM <1 <1 339 9.5 <0.03 NA <1 <1 695 221 <1 19.2 480 250 <0.2 510 <0.3 AS-15 (Duke) 08/07/2015 NM NM NM NM NM NM NM NM NM <1 <1 <50 2 NA NA <5 <1 <10 13 <1 2.97 43 1.1 <0.2 44 <0.3 AS-15 (Vendor) 08/07/2015 5.7 NM 17 58 7.62 NM NM <1 NM <0.5 <0.5 <5 2.3 <0.3 NA <0.5 <0.5 <50 13.5 <0.5 3.22 44.5 2.1 <0.1 47 <1 AS-16(Vendor) 09/30/2013 NM NM NM NM NM NM NM <1 NM NA <2 <50 7.9 NA NA <10 NA <50 11 <5 7.1 NA <2 <2 54 NA AS-17 (Duke) 08/14/2015 NM NM NM NM NM NM NM NM NM <1 <1 <50 0.55 NA NA <5 <1 510 16 <1 5.59 62 6.4 <0.2 74 <0.3 AS-17 (Vendor) 08/14/2015 6.4 NM 15 77 1.06 NM NM 1.2 NM <0.5 <0.5 <5 <1 <0.03 NA <0.5 <0.5 379 14.6 <0.5 5.15 54.7 6.5 <0.1 65 <1 AS-20(Duke) 11/25/2015 NM NM NM NM NM NM NM NM NM <1 <1 149 19 NA NA <5 <1 124 42 <1 25.6 323 170 <0.2 370 <0.3 AS-20 (Vendor) 11/25/2015 7.5 NM 12 552 0.29 NM NM <1 NM <0.5 <0.5 <5 20.6 <0.03 NA <0.5 <0.5 <50 37.3 <0.5 25.1 301 420 <0.1 388 <1 AS-20 06/06/2016 7.5 79.00 15 473 4.3 67 272 6.9 NM <1 <1 108 20 <0.03 NA <1 <1 1630 33 <1 22.6 275 150 <0.2 320 <0.3 DW-6 08/05/2014 6.0 NM 16 102 8.12 129 NM 148 NM <1 <1 <50 1.4 NA NA <5 <5 4060 85 <1 7.83 NA 0.25 <0.2 90 NA DW-6 02/11/2016 6.6 6.92 13 161 0.28 -94 111 71 NM <1 <1 <50 1.6 <1.5 NA <1 <1 28000 607 <1 7.71 94 0.46 <0.2 68 <0.3 Prepared by: BER Checked by: TDP Notes: Q - Bold highlighted concentration indicates exceedance of the 15A NCAC 02L Standard, Appendix 2, April 1, 2013 Spec Cord = Specific Conductance Deg C = Degrees Celsius NTU = Nephelometric turbidity unit DUP = Duplicate umhos/cm = Micro mhos per centimeter NE = Not established S.U. = Standard Unit mg/L = Milligram per liter DO = Dissolved oxygen ft = Feet mV = Millivolts ORP = Oxidation Reduction Potential NA = Not analyzed ug/L = Microgram per liter = NC DHHS Health Screening Level NM = Not measured Temp = Temperature Eh = Redox Potential < = Concentration not detected at or above the reporting limit = Interim Maximum Allowable Concentrations (IMACs) of the 15A NCAC 02L Standard, Appendix 1, April 1, 2013. B = Target analyte detected in method blank at or above the reporting limit. Target analyte concentration in sample is less than 10x the concentration in the method blank. B2 = Target analyte was detected in blank(s) at a concentration greater than 1/2 the reporting limit but less than the reporting limit. Analyte concentration in sample is valid and may be used for compliance purposes. D3 = Sample was diluted due to the presence of high levels of non -target analytes or other matrix interference. Ll = Analyte recovery in the laboratory control sample (LCS) was above QC limits. Results may be biased high. L3 = Analyte recovery in the laboratory control sample (LCS) exceeded QC limits. Analyte presence below reporting limits in associated samples. Results unaffected by high bias. M1 = Matrix spike recovery exceeded QC limits. Batch accepted based on laboratory control sample (LCS) recovery. S = Associated calibration check did not meet specified criteria. P:\Duke Energy Progress. 1026\102. Asheville Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 1-5 Bedrock GW Exceedances Page 4 of 4 TABLE 1-8 2016 CAMA MONITORING WELL SAMPLE LOCATIONS ASHEVILLE STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, ARDEN, NC Monitoring Geologic Unit Well Location Rationale Running Well ID Monitored Count ABMW-11BR Bedrock Separator dike between 1964 and NCDEQ requested well location (data gap well) to assess bedrock flow zone 1 1982 ash basins beneath ash basins. AMW-03B Bedrock Approx. 1800' southwest of 1982 Provide background data for statistically -derived site specific background 2 basin, hydraulically upgradient concentrations in the bedrock flow zone. CB-01 Saprolite West of 1982 basin, hydraulically Provide background data for statistically -derived site specific background 3 upgradient concentrations in the surficial flow zone. West of 1982 basin, hydraulically Provide background data for statistically -derived site specific background CB-01D Transition Zone upgradient concentrations in the surficial flow zone. 4 CB-09BR Bedrock North of 1964 basin, hydraulically Provide background data for statistically -derived site specific background 5 upgradient concentrations in the bedrock flow zone. CB-09SL Saprolite North of 1964 basin, hydraulically Provide background data for statistically -derived site specific background 6 upgradient concentrations in the surficial flow zone. CB-09 Saprolite North of 1964 basin, hydraulically Provide background data for statistically -derived site specific background 7 upgradient concentrations in the surficial flow zone. Approx. 1800' southwest of 1982 Provide background data for statistically -derived site specific background MW-SO Alluvial basin, hydraulically upgradient concentrations in the surficial flow zone. 8 Approx. 900' northwest of 1964 Provide further monitoring along transect parallel to the French Broad River and MW-11 Alluvial basin, east bank of French Broad downgradient of the ash basins. 9 River Approx- 900' northwest of MW-1 SD Transition Zone basin, east bank of French Broad Provide further monitoring along transect parallel to the French Broad River and SO River downgradient of the ash basins. Approx. 675' northwest of 1964 Provide further monitoring along transect parallel to the French Broad River and MW-15A Alluvial basin, east bank of French Broad 11 River downgradient of the ash basins. Approx. 675' northwest of 1964 Provide further monitoring along transect parallel to the French Broad River and MW-15D Transition Zone basin, east bank of French Broad 12 River downgradient of the ash basins. MW-16A Alluvial West of 1964 basin, east bank of Provide further monitoring along transect parallel to the French Broad River and 13 French Broad River downgradient of the ash basins. West of 1964 basin, east bank of Provide further monitoring along transect parallel to the French Broad River and MW-16BR Bedrock French Broad River downgradient of the ash basins. 14 MW-17A Alluvial West of 1964 basin, east bank of Provide further monitoring along transect parallel to the French Broad River and 15 French Broad River downgradient of the ash basins. West of 1964 basin, east bank of Provide further monitoring along transect parallel to the French Broad River and MW-18BR Bedrock French Broad River downgradient of the ash basins. 16 MW-18BRL Lower Bedrock West of 1964 basin, east bank of Provide further monitoring along transect parallel to the French Broad River and 17 French Broad River downgradient of the ash basins. MW-18D Transition Zone West of 1964 basin, east bank of Provide further monitoring along transect parallel to the French Broad River and 18 French Broad River downgradient of the ash basins. Southwest of ash basins, wetlands Provide further monitoring along transect parallel to the French Broad River and MW-20A Alluvial west of I-26 and east of French downgradient of the ash basins. 19 Broad River MW-21D Transition Zone South of 1982 basin, adjacent to Provide further monitoring along transect parallel to the French Broad River and 20 west shoulder of I-26 East downgradient of the ash basins. South of 1982 basin, adjacent to Provide further monitoring along transect parallel to the French Broad River and MW-22BR Bedrock west shoulder of I-26 East downgradient of the ash basins. 21 MW-22D Transition Zone South of 1982 basin, adjacent to Provide further monitoring along transect parallel to the French Broad River and 22 west shoulder of I-26 East downgradient of the ash basins. Approx. 2100' northwest of 1982 Provide background data for statistically -derived site specific background MW-24S Saprolite basin, hydraulically upgradient of concentrations in the surficial flow zone. 23 Lake Julian Prepared by: BDW Checked by: TOP File: P:\Duke Energy Progress.1026\102. Asheville Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 1-8 CAMA Monitoring Locations Page 1 of 1 TABLE 3-1 SURFACE WATER ANALYTICAL RESULTS ASHEVILLE STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, ARDEN, NC Analytical Parameter pH Temp Spec Cond DO ORP Eh Turbidity Alkalinity Aluminum Aluminum Antimony Antimony Arsenic Arsenic Barium Barium Beryllium Beryllium Bi- carbonate Alkalinity Boron Boron DIS TOT DIS TOT DIS TOT DIS TOT DIS TOT DIS TOT Reporting Units S.U. Deg C umhos/cm mg/L mV mV NTUs mg/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L mg/L ug/L ug/L 15A NCAC 02B/EPA Human Health NA NE NE NE NE NE NE NE NE 8000 NE 640 NE 30 NE 200000 NE NE NE NE NE 15A NCAC 02B/EPA Ecological 6.0-9.0 29 NE 5 NE NE 50 NE NE 87 NE NE 150 NE NE NE 6.5 NE NE NE NE 15A NCAC 02L Standard 6.5-8.5 NE NE NE NE NE NE NE NE NE NE 1* NE 10 NE 700 NE 4* NE NE 700 Sample ID Sample Collection Date Field Parameters Analytical Results SW-100 05/11/2016 6.5 15 90 4.07 88 293 54.8 28 55 215 <1 <1 <1 <1 39 41 <1 <1 28 <50 <50 SW-101 05/11/2016 6.7 20 0 7.59 525 730 2.92 10 11 264 <1 <1 <1 <1 39 40 <1 <1 10 <50 <50 SW-102 05/11/2016 6.2 20 87 4.46 209 414 40.7 15.2 6 1890 <1 <1 <1 <1 35 46 <1 <1 15.2 <50 <50 SW-103 05/11/2016 6.5 17 26 8.21 209 414 12.7 6.5 19 752 <1 <1 <1 <1 20 27 <1 <1 6.5 <50 <50 SW-104 05/12/2016 6.2 16 55 6.15 208 413 19.6 12.3 218 2190 <1 <1 <1 <1 24 32 <1 <1 12.3 <50 <50 Notes: - Total metal concentration greater than the 15A NC 02B/EPA Human Health Criteria, 2016(NC), 2016(EPA). - Total metal concentration greater than the 15A NC 02B/EPA Ecological Criteria, 2016(NC), 2016(EPA). 0 - Total metal concentration greater than the 15A NC 02L Standard, Appendix 2, April 1, 2013. S.U. = Standard Unit DIS = Dissolved Temp = Temperature Spec Cond = Specific Conductance DO = Dissolved Oxygen ORP = Oxidation Reduction Potential Eh = Redox Potential TOT = Total NE = Not Established Deg C = Degrees Celsius NTU = Nephelometric Turbidity Unit = NC DHHS Health Screening Level. < = Concentration not detected at or above the reporting limit. * = Interim Maximum Allowable Concentration (IMAC) of the 15A NCAC 02L Standard, Appendix 1, April 2013. H1 = Analysis conducted outside the EPA method holding time. my = Millivolt mg/L = milligrams per liter ug/L = micrograms per liter mg-N/L = milligrams nitrogen per liter umhos/cm = micro mhos per centimeter Prepared by: BER Checked by: TDP P:\Duke Energy Progress. 1026\102. Asheville Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 3-1 SW Analytical Results.xlsx Page 1 of 3 TABLE 3-1 SURFACE WATER ANALYTICAL RESULTS ASHEVILLE STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, ARDEN, NC Analytical Parameter Cadmium Cadmium Calcium Carbonate Alkalinity Chloride Chromium (VI) Chromium Chromium Cobalt Cobalt Copper Copper Iron Iron Lead Lead Magnesium Manganese Manganese Mercury Mercury DIS TOT TOT DIS TOT DIS TOT DIS TOT DIS TOT DIS TOT TOT DIS TOT DIS TOT Reporting Units ug/L ug/L mg/L mg/L mg/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L mg/L ug/L ug/L ug/L ug/L 15A NCAC 02B/EPA Human Health NE NE NE NE NE NE NE NE NE 4 NE NE NE NE NE NE NE NE NE NE NE 15A NCAC 02B/EPA Ecological 0.15 NE NE NE 230 11 35 NE NE NE 2.7 NE NE NE 0.54 NE NE NE NE NE 0.012 15A NCAC 02L Standard NE 2 NE NE 250 0.07A NE 30 NE 1* NE 1000 NE 300 NE 15 NE NE 50 NE 1 Sample ID Sample Collection Date Analytical Results SW-100 05/11/2016 <1 <1 7.92 <5 2 <0.6 <1 <1 4.3 4.63 <1 <1 1700 4060 <1 <1 2.84 703 748 <0.05 <0.05 SW-101 05/11/2016 <1 <1 5.42 <5 6.1 0.22 <1 <1 <1 <1 <1 <1 <10 281 <1 <1 2.52 10 15 <0.05 <0.05 SW-102 05/11/2016 <1 <1 6.06 <5 6.2 <0.6 <1 <1 1.23 1.76 <1 <1 95 2500 <1 <1 2.53 301 330 <0.05 <0.05 SW-103 05/11/2016 <1 <1 1.38 <5 1 0.038 <1 <1 <1 <1 <1 <1 53 1070 <1 <1 0.726 28 54 <0.05 <0.05 SW-104 05/12/2016 <1 <1 3.36 <5 3 0.042 <1 1.1 <1 <1 <1 1.35 282 1100 <1 <1 1.56 34 39 <0.05 <0.05 Notes: - Total metal concentration greater than the 15A NC 02B/EPA Human Health Criteria, 2016(NC), 2016(EPA). - Total metal concentration greater than the 15A NC 02B/EPA Ecological Criteria, 2016(NC), 2016(EPA). 0 - Total metal concentration greater than the 15A NC 02L Standard, Appendix 2, April 1, 2013. S.U. = Standard Unit DIS = Dissolved Temp = Temperature Spec Cond = Specific Conductance DO = Dissolved Oxygen ORP = Oxidation Reduction Potential Eh = Redox Potential TOT = Total NE = Not Established Deg C = Degrees Celsius NTU = Nephelometric Turbidity Unit = NC DHHS Health Screening Level. < = Concentration not detected at or above the reporting limit. * = Interim Maximum Allowable Concentration (IMAC) of the 15A NCAC 02L Standard, Appendix 1, April 2013. H1 = Analysis conducted outside the EPA method holding time. my = Millivolt mg/L = milligrams per liter ug/L = micrograms per liter mg-N/L = milligrams nitrogen per liter umhos/cm = micro mhos per centimeter Prepared by: BER Checked by: TOP P:\Duke Energy Progress. 1026\102. Asheville Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 3-1 SW Analytical Results.xlsx Page 2 of 3 TABLE 3-1 SURFACE WATER ANALYTICAL RESULTS ASHEVILLE STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, ARDEN, NC Analytical Parameter Methane Molybdenum Molybdenum Nickel Nickel Nitrate (as N) Potassium Selenium Selenium Sodium Strontium Strontium Sulfate Sulfide Thallium Thallium Total Dissolved Solids Total Organic Carbon Total Suspended Solids Vanadium Vanadium Zinc Zinc DIS TOT DIS TOT TOT DIS TOT TOT DIS TOT DIS TOT DIS TOT DIS TOT Reporting Units ug/L ug/L ug/L ug/L ug/L mg-N/L mg/L ug/L ug/L mg/L ug/L ug/L mg/L mg/L ug/L ug/L mg/L mg/L mg/L ug/L ug/L ug/L ug/L 15A NCAC 0213/EPA Human Health NE NE 2000 NE NE NE NE NE NE NE NE 40000 NE NE NE 0.47 NE NE NE NE NE NE NE 15A NCAC 0213/EPA Ecological NE NE NE 16 NE N NE NE 5 NE NE NE NE NE NE NE NE NE NE NE NE 36 NE 15A NCAC 02L Standard NE NE NE NE 100 10 NE NE 20 NE NE NE 250 NE NE 0.2* 500 NE NE NE 0.3* NE 1000 Sample ID Sample Collection Date Analytical Results SW-100 05/11/2016 <10 <1 <1 <1 <1 <0.01 1.22 <1 <1 2.15 36 36 2 <0.1 <0.2 <0.2 60 8.9 8 0.567 1.58 8 9 SW-101 05/11/2016 <10 <1 <1 <1 <1 3 1.25 <1 <1 3.02 51 50 0.86 <0.1 <0.2 <0.2 30 0.371 65 <0.3 0.85 <5 <5 SW-102 05/11/2016 14.6 <1 <1 <1 <1 1.7 1.2 <1 <1 3.12 53 55 1.7 <0.1 <0.2 <0.2 47 2 36 0.394 2.14 <5 6 SW-103 05/11/2016 <10 <1 <1 <1 <1 0.222 0.84 <1 <1 1.28 14 16 0.54 <0.1 <0.2 <0.2 <25 1.1 19 0.53 0.98 <5 <5 SW-104 05/12/2016 16.7 H1 <1 <1 <1 <1 0.219 0.985 <1 <1 2.09 25 27 1.7 <0.1 <0.2 <0.2 38 2 18 0.779 2.43 <5 <5 Notes: - Total metal concentration greater than the 15A NC 02B/EPA Human Health Criteria, 2016(NC), 2016(EPA). - Total metal concentration greater than the 15A NC 02B/EPA Ecological Criteria, 2016(NC), 2016(EPA). 0 - Total metal concentration greater than the 15A NC 02L Standard, Appendix 2, April 1, 2013. S.U. = Standard Unit DIS = Dissolved Temp = Temperature Spec Cond = Specific Conductance DO = Dissolved Oxygen ORP = Oxidation Reduction Potential Eh = Redox Potential TOT = Total NE = Not Establish Deg C = Degrees Celsius NTU = Nephelometric Turbidity Unit = NC DHHS Health Screening Level. < = Concentration not detected at or above the reporting limit. * = Interim Maximum Allowable Concentration (IMAC) of the 15A NCAC 02L Standard, Appendix 1, April 2013. H1 = Analysis conducted outside the EPA method holding time. my = Millivolt mg/L = milligrams per liter ug/L = micrograms per liter mg-N/L = milligrams nitrogen per liter umhos/cm = micro mhos per centimeter Prepared by: BER Checked by: TOP P:\Duke Energy Progress. 1026\102. Asheville Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 3-1 SW Analytical Results.xlsx Page 3 of 3 TABLE 4-1 PROVISIONAL ALLUVIAL GROUNDWATER BACKGROUND CONCENTRATION SUMMARY ROUNDS 1-5 ASHEVILLE STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, ARDEN, INC Analytical y Parameter Reporting P g Units NC2L Standard Number of Wells Number of Data Sets Number of Detections Frequency of Detections (%) Alluvium Minimum Detected Background Concentration Maximum Detected Background Concentration Provisional Background Concentration** pH S.U. 6.5-8.5 1 7 7 100 4.6 5.4 4.6 - 5.4° Antimony pg/L 1* 1 7 0 0 ND ND ND Arsenic Ng/L 10 1 8 0 0 ND ND ND Beryllium pg/L 4* 1 5 1 20 ND 0.22 0.22" Boron pg/L 700 1 7 0 0 ND ND ND Cadmium pg/L 2 1 8 0 0 ND ND ND Chloride mg/L 250 1 7 7 100 4 14 32 Chromium pg/L 10 1 8 0 0 ND ND ND Chromium (VI) Ng/L 0.071 1 3 3 100 0.12 0.17 1.3 Cobalt Ng/L 1* 1 7 6 86 2.12 6.11 11 Iron Ng/L 300 1 8 8 100 54 1,040 4,145 Manganese Ng/L 50 1 8 8 100 142 573 1,425 Nickel pg/L 1 8 5 63 2.44 3.1 3.8 Nitrate mg/L 10 1 2 2 100 0.16 0.42 0.428 Selenium pg/L 20 1 8 0 0 ND ND ND Sodium mg/L NE 1 6 6 100 3.27 5.09 8.6 Strontium pg/L NE 1 4 4 100 24 25 28 Sulfate mg/L 250 1 7 7 100 0.29 0.63 1.2 Thallium Ng/L 0.2* 1 8 1 13 ND 0.13 0.13" TDS mg/L 500 1 7 7 100 40 91 142 Vanadium /L 0.3* 1 4 0 0 ND ND ND Prepared By: MCD Checked By: HH Notes: 0 - Indicates comparative value Wells included for background analysis: Alluvium (MW-10) and Saprolite (AMW-03A, CB-01, CB-09, CB-09SL, and MW-24S) Only those parameters for which a 2L is exceeded in the referenced hydrostratigraphic unit are included, plus Strontium as an indicator parameter A single value in the range column indicates only one detected concentration. NE = Not Established ND = Not detected above reporting limit mg/L = milligrams per liter pg/L = micrograms per liter TDS = Total dissolved solids S.U. = Standard Unit NC DHHS Health Screening Level *Interim Maximum Allowable Concentration (IMAC) of the 15A NCAC 02L Standard, Appendix 1, April 2013. —Provisional background concentration is the 95 Percent Upper Prediction Limit. °Provisional background concentration is the maximum observed background concentration. P:\Duke Energy Progress. 1026\102. Asheville Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 4-1 Prov Alluvial BG Concentrations Rounds 1-5 Page 1 of 1 TABLE 4-2 PROVISIONAL SAPROLITE GROUNDWATER BACKGROUND CONCENTRATION SUMMARY ROUNDS 1-5 ASHEVILLE STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, ARDEN, NC Analytical y Parameter Reporting p g Units NC2L Standard Number of Wells Number of Data Sets Number of Detections Frequency of Detections (0/0) Saprolite Minimum Detected Background Concentration Maximum Detected Background Concentration Provisional Background Concentration** pH S.U. 6.5-8.5 4 41 41 100 4.4 6.0 4.4 - 6.06 Antimony pg/L 1* 4 38 0 0 ND ND ND Arsenic Ng/L 10 4 38 0 0 ND ND ND Beryllium pg/L 4* 4 20 2 10 0.23 0.29 0.39 Boron Ng/L 700 4 37 0 0 ND ND ND Cadmium Ng/L 2 4 38 0 0 ND ND ND Chloride mg/L 250 4 38 17 45 1.4 14 14° Chromium pg/L 10 4 38 4 11 0.78 15 9.0 Chromium (VI) Ng/L 0.07^ 4 12 9 75 0.031 0.31 1W.9 Cobalt Ng/L 1* 4 20 13 65 0.78 2.36 4.8 Iron pg/L 300 4 38 35 92 23 2,880 4,293 Manganese Ng/L 50 4 37 37 100 6 170 229 Nickel pg/L 100 4 38 12 32 0.75 10 8.6 Nitrate mg/L 10 4 25 25 100 0.29 1.8 1.8° Selenium Ng/L 20 4 38 2 5 1.12 1.22 1.3 Sodium mg/L NE 4 20 15 75 0.993 4.15 5.0 Strontium pg/L NE 4 17 13 76 7 37 37" Sulfate mg/L 250 4 37 24 65 0.11 0.66 1.3 Thallium Ng/L 0.2* 4 38 1 3 ND 0.12 0.12° TDS mg/L 500 4 38 19 50 25 93 275 Vanadium pg/L 0.3* 4 18 2 11 0.763 1.33 1.5 Prepared by: MCD Checked by: HHS Notes: n - Indicates comparative value Wells included for background analysis: Alluvium (MW-10) and Saprolite (AMW-03A, CB-01, CB-09, CB-09SL, and MW-24S) Onlythose parameters for which a 2L is exceeded in the referenced hydrostratigraphic unit are included, plus Strontium as an indicator parameter NE = Not Established NO = Not detected above reporting limit mg/L = milligrams per liter pg/L = micrograms per liter TDS = Total dissolved solids S.U. = Standard Unit A single value in the range column indicates only one detected concentration. NC DHHS Health Screening Level *Interim Maximum Allowable Concentration (IMAC) of the 15A NCAC 02L Standard, Appendix 1, April 2013. -Provisional background concentration is the 95 Percent Upper Prediction Limit. ^Provisional background concentration is the maximum observed background concentration. PADuke Energy Progress. 1026\102. Asheville Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 4-2 Prov Saprolite BG Concentrations Rounds 1-5 Page 1 of 1 TABLE 4-3 PROVISIONAL TRANSITION ZONE GROUNDWATER BACKGROUND CONCENTRATION SUMMARY ROUNDS 1-5 ASHEVILLE STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, ARDEN, NC Analytical Parameter Reporting Units NC2L Standard Number of Wells Number of Data Sets Number of Detections Frequency of Detections (%) Transition Zone Minimum Detected Background Concentration Maximum Detected Background Concentration Provisional Background Concentration** pH S.U. 6.5-8.5 1 5 5 100 5.6 6.7 5.6 - 5.7° Boron pg/L 700 1 5 0 0 ND ND ND Chloride mg/L 250 1 5 5 100 0.83 1.3 2.2 Chromium pg/L 10 1 5 4 80 1.27 7.04 56 Chromium (VI) pg/L 0.07A 1 3 0 0 ND ND ND Cobalt pg/L 1* 1 5 5 100 1.66 3.08 5.6 Iron pg/L 300 1 5 5 100 231 610 1,895 Manganese pg/L 50 1 5 5 100 93 286 734 Nickel pg/L 100 1 5 5 100 2.07 6.03 16 Nitrate (as N) mg-N/I 10 1 5 5 100 0.036 0.165 0.59 Sodium mg/L NE 1 5 4 80 1.78 5.63 14 Selenium pg/L 20 1 5 0 0 ND ND ND Strontium pg/L NE 1 5 5 100 14 25 41 Sulfate mg/L 250 1 5 5 100 2.2 4.6 8.5 Thallium pg/L 0.2* 1 5 0 0 ND ND ND TDS mg/L 500 1 5 4 80 37 67 196 Vanadium pg/L 0.3* 1 1 1 5 1 2 1 40 1 0.34 1 0.416 0.57 Prepared by: MCD Checked by: HHS Notes: ® - Indicates comparative value Well included for background analysis: CB-01D Only those parameters for which a 2L is exceeded in the referenced hydrostratigraphic unit are included, plus Strontium as an indicator parameter A single value in the range column indicates only one detected concentration. NE = Not Established ND = Not detected above reporting limit mg/L = milligrams per liter pg/L = micrograms per liter mg-N/I = milligrams Nitrogen per liter TDS = Total dissolved solids S.U. = Standard Unit NC DHHS Health Screening Level *Interim Maximum Allowable Concentration (IMAC) of the 15A NCAC 02L Standard, Appendix 1, April 2013. **Provisional background concentration is the 95 Percent Upper Prediction Limit. 'Provisional background concentration is the maximum observed background concentration. P:\Duke Energy Progress. 1026\102. Asheville Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 4-3 Prov TZ BG Concentrations Rounds 1-5 Page 1 of 1 TABLE 4-4 PROVISIONAL BEDROCK GROUNDWATER BACKGROUND CONCENTRATION SUMMARY ROUNDS 1-5 ASHEVILLE STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, ARDEN, NC Analytical Parameter Reporting Units NC2L Standard Number of Wells Number of Samples Number of Detections Frequency of Detections ( o/o) Bedrock Minimum Detected Background Concentration Maximum Detected Background Concentration Provisional Background Concentration** pH S.U. 6.5-8.5 2 10 10 100 6.1 8.9 6.1 - 8.9° Boron Ng/L 700 2 9 0 0 ND ND ND Chloride mg/L 250 2 9 7 78 1 6.4 6.4° Chromium ug/L 10 2 10 3 30 1.1 9.08 20 Chromium (VI) pg/L 0.07^ 2 6 6 100 0.068 0.21 0.60 Cobalt pg/L 1* .1116 2 10 0 0 ND ND ND Iron pg/L 300 2 10 8 80 20 678 3,225 Manganese Ng/L 50 2 10 6 60 17 102 548 Sodium mg/L NE 2 10 9 90 3.47 8.21 12 Selenium Ng/L 20 2 10 0 0 ND ND ND Strontium pg/L NE 2 8 8 100 56 98 122 Sulfate mg/L 250 2 9 9 100 1.1 3.3 4.4 Thallium Ng/L 0.2* 2 10 0 0 ND ND ND TDS mg/L 500 2 9 9 100 47 96 151 Vanadium /L 0.3* 2 8 2 25 0.344 0.499 0.68 Prepared by: MCD Checked by: HHS Notes: . - Indicates comparative value Wells included for background analysis: AMW-03B and CB-09SR Only those parameters for which a 2L is exceeded in the referenced hydrostratigraphic unit are included, plus Strontium as an indicator parameter A single value in the range column indicates only one detected concentration. NE = Not Established ND = Not detected above reporting limit mg/L = milligrams per liter pg/L = micrograms per liter TDS = Total dissolved solids S.U. = Standard Unit = NC DHHS Health Screening Level *Interim Maximum Allowable Concentration (IMAC) of the 15A NCAC 02L Standard, Appendix 1, April 2013. **Provisional background concentration is the 95 Percent Upper Prediction Limit. 'Provisional background concentration is the maximum observed background concentration. P:\Duke Energy Progress. 1026\102. Asheville Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 4-4 Prov Bedrock BG Concentrations Rounds 1-5 Page 1 of 1 TABLE 4-5 ALLUVIAL GROUNDWATER EXCEEDANCES INCORPORATING PROVISIONAL BACKGROUND ASHEVILLE STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, ARDEN, NC Analytical Parameter pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Boron Cadmium Chloride Chromium (VI) Chromium (VI) Speciation Cobalt Iron Manganese Selenium Sodium Strontium Sulfate Thallium Total Dissolved Solids Vanadium Zinc Reporting Units S.U. ft Deg C umhos/cm mg/L mV mV NTUs mg/L ug/L ug/L mg/L ug/L ug/L ug/L ug/L ug/L ug/L mg/L ug/L mg/L ug/L mg/L ug/L ug/L 15A NCAC 02L Standard 6.5-8.5 NE NE NE NE NE NE NE NE 700 2 250 0.07^ 0.07^ 1* 300 50 20 NE NE 250 0.2* 500 0.3* 1000 Provisional Background 4.6-5.4 NE NE NE NE NE NE NE NE NE NE 32 1.3 1.3' 11 4145 1425 NE 8.6 28 1.2 0.13 142 NE NE Sample ID Sample Collection Date Field Parameters Analytical Results Background MW-10 03/05/2014 5.4 5.72 10 72 5.94 226 NM 2.9 NM <50 <1 4.4 NA NA 3.18 207 187 <1 NA NA 0.63 <0.2 55 NA 29 MW-10 04/17/2014 5.0 5.64 12 68 0.3 182 NM 2.9 NM <50 <1 8.3 NA NA NA 1040 573 <1 NA NA 0.41 <0.2 48 NA 17 VW-10 07/23/2014 4.6 5.70 19 67 0.38 244 NM 0.93 NM <50 <1 8.4 NA NA <5 598 363 <1 3.3 NA 0.58 <0.2 44 NA 15 VW-10 11/04/2014 NM NM NM NM NM NM NM NM NM NA <1 NA NA NA 6.11 675 555 <1 3.27 NA NA <0.2 NA NA 17 MW-10 05/12/2015 5.0 5.58 16 64 0.96 47 252 4.09 <0.5 <50 <1 8.9 NA NA 4.29 369 340 <1 4.02 24 0.3 <0.2 44 <0.3 85 VW-10 12/08/2015 5.4 5.79 14 74 0.4 27 232 0.69 0 <50 <0.08 12.6 0.14 NA 3.6 64 200 <0.5 5.09 24 <1 0.13 91 <1 12 VW-10 01/19/2016 5.1 5.62 8 72 0.53 481 686 0.71 0 <50 <1 14 0.17 M1 NA 2.99 63 185 <1 4.85 25 0.29 <0.2 40 <0.3 15 VW-10 04/12/2016 5.1 5.69 13 67 0.37 141 346 1.82 NM <50 <1 12 0.12 NA 2.12 54 B2 142 <1 4.15 24 0.43 <0.2 46 <0.3 14 VW-10 07/08/2016 4.6 5.74 23 70 1.71 S 359 564 6.97 NM <50 <1 15 0.14 NA 2.95 31 175 <1 5.64 26 0.3 <0.2 53 <0.3 17 Alluvial CB-5 11/18/2010 NM 3.61 14 210 NM NM NM 6.46 NM 283 <0.08 23.3 NA NA NA 24100 415 <10 NA NA 31.5 <0.1 163 NA <10 CB-5 04/12/2011 5.8 3.63 12 235 0.67 -119 86 3.24 NM 169 <0.08 35.4 NA NA NA 22700 424 <10 NA NA 19.9 <0.1 112 NA <10 CB-5 07/14/2011 5.8 3.94 21 268 0.54 -95 111 2.36 NM 295 <0.08 32.3 B NA NA NA 23600 397 <10 NA NA 21 B <0.1 152 B NA <10 CB-5 11/08/2011 5.8 3.58 14 252 1.29 -122 84 9.27 NM 296 <0.08 28 NA NA NA 17400 395 <10 NA NA 25.9 <0.1 165 NA <10 CB-5 04/11/2012 5.9 3.56 13 232 0.55 -87 119 8.49 NM 130 <0.08 25.9 NA NA NA 19300 391 <10 NA NA 11.5 1 <0.1 134 NA <10 CB-5 07/17/2012 5.9 3.76 20 241 0.57 -16 189 7.97 NM 265 <0.08 26.5 NA NA NA 20200 329 <10 NA NA 17.1 <0.1 141 NA <10 CB-5 11/16/2012 6.0 3.51 13 203 2.48 97 302 3.08 NM 241 <0.08 26.1 NA NA NA 13800 295 <10 NA NA 6.9 <0.1 123 NA <10 CB-5 04/04/2013 5.8 3.33 8 203 2.03 58 263 3.04 NM 149 <1 18 NA NA NA 13400 283 <1 NA NA 6.2 <0.2 130 NA <5 CB-5 07/02/2013 5.6 3.40 18 215 0.46 -119 86 2.61 NM 176 <1 15 NA NA NA 18500 341 <1 NA NA 2.6 <0.2 140 NA <5 CB-5 11/06/2013 5.9 3.72 16 196 0.27 10 215 3.2 NM 186 <1 16 NA NA NA 20400 382 <1 NA NA 5.3 <0.2 120 NA <5 CB-5 04/17/2014 6.0 3.57 12 202 0.3 20 225 5.1 NM 117 <1 16 NA NA NA 21300 466 <1 NA NA 9.2 <0.2 140 NA <5 CB-5 07/10/2014 6.1 3.40 19 237 0.54 -12 193 5.5 NM 182 <1 22 NA NA NA 27400 438 <1 NA NA 3 <0.2 150 NA <5 CB-5 07/24/2014 5.9 9.55 19 226 0.24 -14 NM 7.15 NM 190 <1 21 NA NA <5 24100 434 <1 16 NA 1.4 <0.2 150 NA <5 CB-5 11/04/2014 5.9 3.73 16 255 0.4 15 220 15.3 NM 214 <1 23 NA NA NA 24700 476 <1 NA NA 17 <0.2 150 NA 6 CB-5 04/06/2015 6.7 3.66 12 216 0.51 -29 176 9.16 NM 142 <1 22 NA NA <1 19600 594 <1 15.9 NA 15 0.239 150 NA <5 CB-5 07/09/2015 6.0 5.05 19 230 0.95 -88 117 3.99 NM 209 <1 27 NA NA <1 25400 488 <1 17.4 33 8.9 <0.2 150 0.855 <5 CB-5 11/03/2015 6.1 3.49 17 302 1.27 16 221 4.83 NM 303 <1 22 NA NA <1 29800 761 <1 24.9 55 83 <0.2 180 0.381 <5 CB-5 12/09/2015 5.6 3.55 12 261 3.22 101 306 3.18 4 230 <0.08 22.2 <0.03 NA 0.84 23200 640 <0.5 21.8 50 58 <0.1 178 <1 <10 CB-5 01/18/2016 6.0 3.51 9 273 0.82 30 235 2.18 3 186 <1 22 <0.03 NA <1 26900 625 <1 18.7 42 48 <0.2 130 0.461 <5 CB-5 04/06/2016 6.0 3.61 13 243 1.3 95 300 1.56 NM 152 <1 26 NA NA <1 19400 551 <1 17.1 41 36 <0.2 160 0.385 <5 CB-5 07/07/2016 5.5 4.21 18 290 0.38 40 245 5.42 NM 246 NA 31 NA NA <1 24100 546 <1 21.3 43 43 <0.2 160 0.473 <5 CB-6 11/18/2010 NM 3.53 13 689 NM NM NM 3.99 NM 918 <0.08 38.9 NA NA NA 24600 3430 <10 NA NA 378 <0.1 642 NA <10 CB-6 04/12/2011 5.4 3.44 13 1247 0.71 -105 100 2.92 NM 758 <0.08 40 NA NA NA 32700 5060 <10 NA NA 715 <0.1 1070 NA <10 CB-6 DUP 04/12/2011 5.4 3.44 13 1247 0.71 -105 100 2.92 NM 706 <0.08 41.9 NA NA NA 32900 5080 <10 NA NA 694 <0.1 1050 NA <10 CB-6 07/14/2011 5.6 3.37 21 1090 1.21 -46 159 2.12 NM 918 <0.08 65.4 NA NA NA 37600 4720 <10 NA NA 428 <0.1 789 NA 14.1 CB-6 11/08/2011 5.5 3.26 14 930 2.42 -60 145 6.59 NM 985 <0.08 55.3 NA NA NA 28300 7080 <10 NA NA 353 <0.1 686 NA <10 CB-6 04/10/2012 5.6 3.06 15 737 1.77 -62 143 3.05 NM 758 <0.08 42.4 NA NA NA 17500 4250 <10 NA NA 304 <0.1 621 NA <10 CB-6 07/17/2012 5.7 2.72 21 604 1.39 80 285 6.65 NM 759 0.11 22.5 NA NA NA 10400 2050 <10 NA NA 174 <0.1 346 NA <10 CB-6 11/16/2012 5.2 2.68 11 602 3.96 255 460 9.55 NM 702 0.14 21.9 NA NA NA 3410 3060 <10 NA NA 207 <0.1 406 NA <10 CB-6 04/04/2013 5.8 2.68 9 429 1.29 57 262 6.42 NM 639 <1 13 NA NA NA 7720 1660 <1 NA NA 140 <0.2 250 NA <5 P:\Duke Energy Progress.1026\102. Asheville Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 4-5 Alluvial GW Exceedances Inc Prov BG Page 1 of 3 TABLE 4-5 ALLUVIAL GROUNDWATER EXCEEDANCES INCORPORATING PROVISIONAL BACKGROUND ASHEVILLE STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, ARDEN, NC Analytical Parameter pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Boron Cadmium Chloride Chromium (VI) Chromium (VI) Speciation Cobalt Iron Manganese Selenium Sodium Strontium Sulfate Thallium Total Dissolved Solids Vanadium Zinc Reporting Units S.U. ft Deg C umhos/cm mg/L mV mV NTUs mg/L ug/L ug/L mg/L ug/L ug/L ug/L ug/L ug/L ug/L mg/L ug/L mg/L ug/L mg/L ug/L ug/L 15A NCAC 02L Standard 6.5-8.5 NE NE NE NE NE NE NE NE 700 2 250 0.07^ 0.07^ 1* 300 50 20 NE NE 250 0.2* 500 0.3* 1000 Provisional Background 4.6-5.4 NE NE NE NE NE INE NE NE NE NE 32 1.3 1.3' 11 4145 1425 NE 8.6 28 1.2 0.13 142 NE NE Sample ID Sample Collection Date Field Parameters Analytical Results CB-6 07/02/2013 5.5 2.74 20 407 1.63 -15 190 4.9 NM 865 <1 11 NA NA NA 7250 1500 <1 NA NA 110 <0.2 240 NA 6 CB-6 11/06/2013 6.0 3.35 16 343 2.1 49 254 8.8 NM 781 <1 13 NA NA NA 5610 1630 <1 NA NA 100 <0.2 210 NA <5 CB-6 04/17/2014 6.0 4.25 11 511 1 151 356 5.8 NM 629 <1 29 NA NA NA 15400 2690 <1 NA NA 190 <0.2 360 NA <5 CB-6 07/10/2014 5.9 3.32 19 607 0.4 40 245 5.3 NM 827 <1 63 NA NA NA 18100 2620 <1 NA NA 160 <0.2 400 NA <5 CB-6 07/24/2014 5.9 3.54 18 604 0.45 8 NM 9.02 NM 837 <1 61 NA NA <5 18000 2640 <1 28.2 NA 160 <0.2 390 NA <5 CB-6 11/04/2014 5.9 3.63 14 582 1.48 83 288 5.78 NM 806 <1 43 NA NA NA 14600 3010 <1 NA NA 210 <0.2 400 NA <5 CB-6 DUP 11/04/2014 5.9 3.63 14 582 1.48 83 288 5.78 NM 808 <1 41 NA NA NA 16000 3110 <1 NA NA 220 <0.2 410 NA <5 CB-6 04/06/2015 6.0 3.48 11 525 1.3 36 241 8.53 NM 609 <1 37 NA NA 1.42 14600 3330 <1 23.2 NA 170 <0.2 360 NA <5 CB-6 07/08/2015 5.9 4.94 24 745 0.6 -93 112 4.19 NM 807 <1 150 NA NA 2.21 22000 3950 <1 37.4 409 110 <0.2 520 <0.3 <5 CB-6 11/04/2015 3.4 3.27 16 1739 1.39 258 463 1.5 NM 802 <1 66 NA NA 67.3 22100 21800 1.21 54.1 B2 1400 930 <0.2 1300 <0.3 7 CB-6 12/08/2015 3.5 3.46 9 1552 1.8 438 643 2.78 3.5 700 0.49 66.3 <0.03 NA 45.5 16400 18300 1 47.1 1100 870 0.11 1250 <1 34 CB-6 01/21/2016 3.6 3.38 8 1215 3.7 214 419 2.27 1.25 599 <1 55 <0.03 NA 23.6 16600 14300 <1 41 911 590 <0.2 910 <0.3 18 CB-6 04/06/2016 3.7 3.23 11 1139 0.79 443 648 3.13 NM 576 <1 54 NA NA 21.5 19000 13500 <1 40.2 808 590 <0.2 820 <0.3 18 CB-6 07/07/2016 4.7 5.31 22 1122 0.56 243 448 3.41 NM 780 NA 49 NA NA 11.1 25400 10300 <1 51.7 746 580 <0.2 840 <0.3 7 CB-7 11/18/2010 NM 8.06 15 419 NM NM NM 0 NM 259 0.22 121 NA NA NA 342 236 <10 NA NA 53.5 <0.1 319 NA <10 CB-7 11/08/2011 5.5 7.95 16 643 4.8 -52 153 1.19 NM 282 0.14 159 NA NA NA 65.3 95.5 <10 NA NA 49.6 <0.1 372 NA <10 CB-7 07/17/2012 5.4 7.74 20 538 0.99 203 408 0.71 NM 270 <0.08 152 NA NA NA <50 130 <10 I NA NA 66.9 <0.1 311 NA <10 CB-7 11/06/2013 5.7 8.03 17 384 3.2 62 267 7 NM 240 <1 68 NA NA NA 816 47 1.92 NA NA 42 <0.2 210 NA <5 CB-7 04/06/2015 5.9 7.73 11 456 6.2 65 270 0.78 NM 233 <1 95 NA NA <1 <10 <5 21.3 23.1 NA 36 <0.2 310 NA <5 CB-7 07/08/2015 5.8 8.65 21 276 4.45 66 271 1.13 NM 263 <1 36 NA NA <1 <10 <5 14.6 19.9 172 56 <0.2 190 0.574 <5 CB-7 11/02/2015 5.2 5.53 17 247 4.7 500 705 1.5 NM 66 <1 41 NA NA <1 20 5 23.2 7.57 225 21 1 <0.2 180 0.337 <5 CB-7 12/08/2015 5.8 5.82 12 306 2 274 479 1.5 0 88 <0.08 67.1 <0.03 NA 0.58 <50 14 11.3 1 10.9 320 25.3 <0.1 242 <1 38 CB-7 01/19/2016 5.9 5.79 6 322 1.7 156 361 1.5 0 121 <1 65 <0.03 NA <1 44 14 8.13 14 318 31 <0.2 200 <0.3 86 CB-7 04/06/2016 5.6 7.06 11 727 1.95 296 501 1.21 NM 213 <1 190 NA NA <1 66 40 3.86 49.8 598 31 <0.2 440 <0.3 <5 CB-7 07/07/2016 5.5 8.95 19 670 0.33 313 518 2.16 NM 272 NA 150 NA NA 1.25 86 175 <1 46.1 457 37 <0.2 460 0.372 1 <5 MW-11 03/05/2014 5.7 7.77 9 365 6.87 211 NM 0.8 NM <50 <1 73 NA NA 2.99 78 221 <1 NA NA 27 1 <0.2 240 NA 20 VW-11 04/17/2014 5.3 7.35 11 342 3.2 244 NM 0.5 NM <50 <1 80 NA NA NA <10 577 <1 I NA NA 19 <0.2 210 NA 10000 VW-11 05/20/2015 5.0 8.61 16 346 1.98 93 298 1.01 <0.5 <50 <1 73 NA NA 2.14 <10 407 <1 25.8 96 25 <0.2 220 <0.3 <5 VW-11 12/08/2015 5.5 6.35 12 488 3.4 238 443 2.81 0 <50 0.1 121 0.65 NA 2 <50 250 <0.5 39.4 130 24.2 0.12 300 <1 <10 MW-11 01/18/2016 5.6 5.99 2 531 3.2 226 431 0.9 0 <50 <1 120 0.48 NA 1.23 25 239 <1 40.1 137 30 <0.2 280 <0.3 1 5 VW-11 04/07/2016 5.4 7.92 12 452 1.76 255 460 1.1 NM <50 <1 97 0.41 NA <1 <10 281 <1 38.4 125 28 1 <0.2 220 <0.3 <5 VW-11 07/08/2016 5.4 8.48 18 501 1.11 S 309 514 0.98 0 <50 <1 110 0.26 NA <1 61 113 <1 47 138 30 <0.2 300 <0.3 <5 MW-15A 03/04/2015 5.4 6.23 10 188 2.86 47 252 3.28 0.5 61 <1 43 NA NA 1.25 879 1060 <1 14.8 120 5.3 <0.2 120 <0.3 7 MW-15A 05/20/2015 4.9 7.94 18 167 0.41 151 356 4.73 <0.5 54 <1 34 NA NA <1 217 840 <1 11.7 102 5.3 <0.2 99 <0.3 <5 MW-15A 12/08/2015 5.2 6.11 14 165 1.24 257 462 1.08 0 71 <0.08 39.4 <0.03 NA 0.61 <50 1000 <0.5 13.2 93 5.8 <0.1 <25 <1 I <10 MW-15A 01/18/2016 5.1 5.88 5 172 0.7 225 430 0.6 NM 60 <1 43 <0.03 NA <1 43 1000 <1 11.9 100 5.8 <0.2 91 <0.3 <5 MW-15A 04/07/2016 5.0 6.89 13 149 0.13 212 417 0.44 NM <50 <1 36 <0.03 NA <1 63 673 <1 11 90 4.8 <0.2 69 <0.3 <5 MW-15A 07/08/2016 4.9 8.17 17 173 0.73 S 340 545 2.49 0 132 <1 41 <0.03 NA <1 125 385 <1 9.87 118 5.1 <0.2 110 0.373 <5 MW-16A 03/11/2015 5.3 9.63 10 400 0.88 35 240 0.63 0.5 303 <1 93 NA NA 1.01 522 1980 <1 14.9 184 33 <0.2 260 <0.3 <5 MW-16A DUP 03/11/2015 5.3 9.63 10 400 0.88 35 240 0.63 0.5 302 <1 92 NA NA 1.1 538 2000 <1 14.7 186 3 1 <0.2 260 <0.3 <5 MW-16A 05/28/2015 5.0 9.84 15 432 0.51 12 217 3.17 <0.5 354 <1 97 NA NA 1.35 248 1940 <1 17.5 203 33 <0.2 350 <0.3 <5 P:\Duke Energy Progress.1026\102. Asheville Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 4-5 Alluvial GW Exceedances Inc Prov BG Page 2 of 3 TABLE 4-5 ALLUVIAL GROUNDWATER EXCEEDANCES INCORPORATING PROVISIONAL BACKGROUND ASHEVILLE STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, ARDEN, NC Analytical Parameter pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Boron Cadmium Chloride Chromium (VI) Chromium (VI) Speciation Cobalt Iron Manganese Selenium Sodium Strontium Sulfate Thallium Total Dissolved Solids Vanadium Zinc Reporting Units S.U. ft Deg C umhos/cm mg/L mV mV NTUs mg/L ug/L ug/L mg/L ug/L ug/L ug/L ug/L ug/L ug/L mg/L ug/L mg/L ug/L mg/L ug/L ug/L 15A NCAC 02L Standard 6.5-8.5 NE NE NE NE NE NE NE NE 700 2 250 0.07A 0.07A 1* 300 50 20 NE NE 250 0.2* 500 0.3* 1000 Provisional Background 4.6-5.4 NE I NE NE NE I NE NE NE NE NE NE 32 1 1.3 1.3' 11 4145 1425 NE 8.6 28 1.2 0.13 142 NE NE Sample ID Sample Collection Date Field Parameters Analytical Results MW-16A 12/08/2015 5.1 8.46 15 432 0.61 153 358 2.65 0.5 480 <0.08 132 <0.03 NA 1.4 420 1600 <0.5 22.8 240 46.5 <0.1 355 <1 <10 MW-16A 01/18/2016 5.0 8.41 5 598 0.6 268 473 0.5 0 524 <1 140 0.034 NA 1.33 96 1620 <1 22.1 275 59 <0.2 330 <0.3 <5 MW-16A 04/08/2016 5.0 9.21 11 509 0.25 264 469 0.65 NM 447 <1 100 <0.03 NA 2 53 1560 <1 19.3 240 65 <0.2 310 <0.3 <5 MW-16A 07/08/2016 4.9 10.18 17 480 0.83 S 343 548 2.39 NM 517 <1 100 0.048 NA 1.81 171 1640 <1 19.3 228 69 <0.2 360 <0.3 <5 MW-17A 03/03/2015 6.3 5.28 8 1331 1.24 22 227 9.4 3 1060 <1 330 NA NA 26.3 8970 12800 <1 15.4 507 140 <0.2 1300 0.401 19 MW-17A 05/21/2015 6.2 6.89 24 1573 0.49 -163 42 6.72 6 1540 <1 390 NA NA 25.8 40600 11900 <1 14 536 160 <0.2 1200 2.63 48 MW-17A 12/09/2015 5.7 5.77 3 1531 2.8 255 460 6.82 NM 2000 <0.08 403 <0.03 NA 22.6 29500 6700 <0.5 14.8 560 144 <0.1 1100 <1 <0.1 B MW-17A 01/19/2016 5.7 5.52 1 1612 0.6 98 303 8.7 2 1940 <1 410 <0.03 NA 22.4 24200 6420 <1 14.1 602 170 <0.2 1100 <0.3 8 MW-17A 04/11/2016 5.8 6.29 12 1688 0.23 69 274 7.27 NM 1980 <1 410 <0.03 NA 22.4 30000 5900 <1 14.9 625 190 <0.2 NA 1.17 6 MW-17A 04/12/2016 5.8 6.29 12 1688 0.23 69 274 7.27 NM NA NA NA NA NA NA NA NA NA NA NA NA NA 1200 NA NA MW-17A 07/12/2016 5.7 6.65 20 1704 0.35 184 389 5.08 NM 2470 NA 430 <0.03 NA 17 35500 5040 <1 14.8 648 190 <0.2 1300 <0.3 <5 MW-20A 06/24/2015 6.0 4.98 21 707 0.68 -93 112 2.43 NM 641 2.01 23 NA NA 16.4 16300 15800 1.18 17.5 548 220 <0.2 480 0.328 10 MW-20A 09/03/2015 6.0 6.66 20 506 0.73 91 296 3.94 1.5 727 <1 24 NA <0.006 <1 3180 10400 <1 18 M4 352 78 <0.2 330 0.458 <5 MW-20A 12/09/2015 5.5 5.02 13 433 1 101 306 8.13 3 630 2.7 16.5 <0.03 NA 37.7 7600 5400 3.5 13.7 310 186 <0.1 294 <1 L3 <10 MW-20A 01/21/2016 5.7 5.14 9 385 1 -186 19 1 9.73 0.5 625 1.57 13 <0.03 NA 33.8 7110 4610 1.19 12.4 269 180 <0.2 300 <0.3 8 MW-20A 04/13/2016 5.7 3.05 1 13 464 0.28 89 294 1 9.45 NM 751 <1 16 <0.03 NA 28.1 6270 8030 <1 14.9 339 190 0.201 320 <0.3 11 Water Supply Wells AS-3 02/06/2014 5.4 3.44 10 222 4.8 342 NM 1.03 NM <50 NA NA NA NA NA 20 36 NA NA NA NA <0.2 NA NA NA AS-3 (Duke) 03/04/2015 NM NM NM NM NM NM NM NM NM <50 <1 59 NA NA 1.03 117 45 <1 28.2 78 14 <0.2 160 <0.3 31 AS-3 (Vendor) 03/04/2015 5.0 NM 15 214 4.8 NM NM <1 NM <500 <1 61 <10 NA 1 90 39 <1 29 73 12 <1 140 <5 25 AS-3 02/11/2016 5.0 3.92 11 256 3.44 306 511 2.76 NM <50 <1 60 0.38 NA <1 369 38 <1 27.9 75 12 <0.2 150 <0.3 <5 Notes: Q- Concentration exceeds the 15A NCAC 02L Standard, Appendix 2, April 1, 2013 or provisional background concentration (whichever is greater). Deg C = Degrees Celsius mV = Millivolts mg/L = Milligram per liter ORP = Oxidation Reduction Potential DO = Dissolved oxygen DUP = Duplicate NA = Not analyzed ug/L = Microgram per liter umhos/cm = Micro mhos per centimeter NE = Not established S.U. = Standard Unit Temp = Temperature Spec Cond = Specific Conductance NTU = Nephelometric turbidity unit ft = Feet < = Concentration not detected at or above the reporting limit * = Interim Maximum Allowable Concentrations (IMACs) of the 15A NCAC 02L Standard, Appendix 1, April 1, 2013. B = Target analyte detected in method blank at or above the reporting limit. Target analyte concentration in sample is less than 10x the concentration in the method blank. B2 = Target analyte was detected in blank(s) at a concentration greater than 1/2 the reporting limit but less than the reporting limit. Analyte concentration in sample is valid and may be used for compliance purposes. L3 = Analyte recovery in the laboratory control sample (LCS) exceeded QC limits. Analyte presence below reporting limits in associated samples. Results unaffected by high bias. M1 = Matrix Spike Recovery exceeded QC limits. Batch accepted based on laboratory control sample (LCS) recovery M4 = The spike recovery value was unusable since the analyte concentration in the sample was disproportionate to the spike level. S = Associated calibration check did not meet specified criteria. = NC DHHS Health Screening Level. NM = Not measured Eh = Redox Potential Prepared by: BER Checked by: TDP/MCD P:\Duke Energy Progress.1026\102. Asheville Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 4-5 Alluvial GW Exceedances Inc Prov BG Page 3 of 3 TABLE 4-6 SAPROLITE GROUNDWATER EXCEEDANCES INCORPORATING PROVISIONAL BACKGROUND ASHEVILLE STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, ARDEN, NC Analytical Parameter pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Beryllium Boron Cadmium Chloride Chromium (VI) Chromium (VI) Speciation Chromium Cobalt Iron Lead Manganese Nickel Nitrate Selenium Sodium Strontium Sulfate Thallium TotalS Dissolved olids Vanadium Reporting Units S.U. ft Deg C umhos/cm mg/L mV mV NTUs mg/L ug/L ug/L ug/L ug/L ug/L mg/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L mg/L ug/L mg/L ug/L mg/L ug/L mg/L ug/L SSA NCAC 02L Standard 6.5-8.5 NE NE NE NE NE NE NE NE 1* 10 4* 700 2 250 0.07A 0.07A 10 1* 300 15 50 100 10 20 NE NE 250 0.2* 500 0.3* Provisional Background 4.4-6.0 NE NE NE NE NE NE NE NE NE NE 0.39 NE NE 14 1.9 1.9' 9.0 4.8 4293 NE 229 8.6 1.8 1.3 5.0 37 1.3 0.12 275 1.5 Sample ID Sample Collection Date Field Parameters Analytical Results Background AMW-3A 1110412014 NM NM NM NM NM NM NM NM NM <1 <1 <1 NA <1 NA NA NA 12.4 <1 153 <1 22 <1 NA <1 6.54 NA NA <0.2 NA NA AMW-3A 0511212015 12.1 8.17 15 2350 5.41 -189 16 1.5 <0.5 <1 <1 <1 <50 <1 1.1 NA NA <1 <1 <10 <1 <5 <1 NA <1 7.7 1220 0.34 <0.2 500 8.98 CB-1 11/17/2010 4.6 47.73 14 15 NM NM NM 9.16 NM <0.5 <5 NA <50 <0.08 <5 NA NA <5 NA 1160 <5 46.3 <5 0.51 <10 NA NA <5 <0.1 <25 NA CB-1 04/12/2011 4.4 48.20 17 18 7.57 126 331 4.81 NM <0.5 <5 NA <50 <0.08 <5 NA NA <5 NA 589 <5 36.3 <5 0.43 <10 NA NA <5 <0.1 <25 NA CB-1 0711912011 4.8 48.40 22 17 7.16 -4 201 17.6 NM <0.5 <5 NA 51.1 <0.08 <5 NA NA 81.5 NA 1330 <5 43 53 8 0.43 <10 NA NA <5 <0.1 <25 NA CB-1 1110912011 5.4 50.47 12 19 8.36 -86 119 20.9 NM <0.5 6.7 NA <50 <0.08 <5 NA NA 8.7 NA 17800 6 293 12 0.42 <10 NA NA <5 <0.1 93 NA CB-1 04/10/2012 4.8 49.75 15 16 9.67 -44 161 8.11 NM <0.5 <5 NA <50 <0.08 <5 NA NA <5 NA 276 <5 28.4 <5 0.41 <10 NA NA <5 <0.1 <25 NA CB-1 07/16/2012 4.6 49.09 16 20 8.65 317 522 3.65 NM <0.5 <5 NA <50 <0.08 1.6 NA NA <5 NA 179 <5 26.8 <5 0.42 <10 NA NA <2 <0.1 <25 NA CB-1 11/15/2012 4.9 50.89 16 18 7.82 335 540 7.86 NM <0.5 <5 NA <50 <0.08 1.4 NA NA <5 NA 218 <5 28.5 <5 0.36 <10 NA NA <2 <0.1 <25 NA CB-1 04/03/2013 4.5 49.47 15 20 7.89 135 340 4.78 NM <1 <1 NA <50 <1 1.5 NA NA 15 NA 98 <1 27 10 0.43 <1 NA NA <0.1 <0.2 <10 NA CB-1 07/01/2013 5.3 44.71 16 24 8.75 60 265 9.2 NM <1 <1 NA <50 <1 1.7 NA NA <5 NA 2870 <1 67 <5 0.42 1.22 NA NA <0.1 <0.2 <25 NA CB-1 11/05/2013 4.5 43.93 15 18 9.4 413 618 12 NM <1 <1 NA <50 <1 1.6 NA NA <5 NA 664 <1 33 <5 0.42 <1 NA NA 0.15 <0.2 <25 NA C13-1 04/16/2014 4.4 46.05 15 17 8.3 410 615 2.8 NM <1 <1 NA <50 <1 1.7 NA NA <5 NA 152 <1 24 <5 0.42 <1 NA NA 0.18 <0.2 <25 NA CB-1 07/09/2014 4.6 46.41 16 18 8.67 387 592 3.6 NM <1 <1 NA <50 <1 1.7 NA NA <5 NA 215 <1 26 <5 0.45 <1 NA NA 0.12 <0.2 <25 NA C13-1 11/03/2014 4.5 48.24 16 22 7.53 352 557 7.09 NM <1 <1 NA <50 <1 1.7 NA NA <5 NA 175 <1 25 <5 0.4 <1 NA NA 0.17 <0.2 <25 NA CB-1 04/07/2015 4.9 45.50 15 17 8.68 136 341 6.74 NM <1 <1 <1 <50 <1 1.6 NA NA <5 1.94 279 <1 26 <5 0.42 <1 1.04 NA 0.36 <0.2 31 NA C13-1 07/06/2015 4.7 49.12 16 20 8.34 161 366 3.82 NM <1 <1 <1 <50 <1 1.7 NA NA <5 1.95 86 <1 25 <5 1.8 <1 0.993 <5 0.61 <0.2 <25 <0.3 C8-1 1110312015 5.1 50.73 16 15 7.9 525 730 21 NM <1 <1 <1 <50 <1 1.2 NA NA 5 4.11 4040 <1 91 <5 1.3 <1 0.89382 <5 0.4 <0.2 <25 3.03 CB-1 DUP 1110312015 5.1 50.73 16 15 7.9 525 730 21 NM <1 <1 <1 <50 <1 1.2 NA NA <5 4.18 4560 <1 98 6 1.3 <1 0.894 <5 0.54 <0.2 <25 3.21 CB-1 12/08/2015 5.1 50.76 15 15 6.4 69 274 8.8 0 <0.5 <0.5 <0.2 <50 <0.08 1.6 0.031 NA 0.78 1.9 290 <0.1 27 1.4 NA <0.5 <5 <5 <1 <0.1 33 <1 CB-1 01/20/2016 4.9 48.27 10 16 8.32 220 425 7.81 0 <1 <1 <1 <50 <1 2.2 <0.03 NA <1 2.1 279 <1 28 1.53 NA <1 1.03 <5 <0.1 <0.2 <25 <0.3 CB-1 04/07/2016 4.9 44.14 14 17 8.22 329 534 9.74 NM <1 <1 <1 <50 <1 2 <0.03 NA <5 2.36 532 <1 31 <5 1.8 <1 1.17 <5 0.35 <0.2 <25 <0.3 CB-1 07/05/2016 4.8 47.44 23 17 5.44 360 565 8.95 NM <1 <1 <1 <50 <1 1.9 <0.03 NA <5 2.39 595 <1 32 <5 1.8 <1 1.05 <5 0.23 <0.2 <25 0.537 C13-1 DUP 07/05/2016 4.8 47.44 23 17 5.44 360 565 8.95 NM <1 <1 <1 <50 <1 NA NA NA <1 2.32 492 <1 32 1.36 NA <1 NA <5 NA <0.2 NA 0.397 C13-9 11/15/2012 5.0 37.78 15 46 1.66 399 604 8.42 NM <0.5 <5 NA <50 <0.08 6.8 NA NA <5 NA 2880 <5 105 <5 0.38 <10 NA NA <2 0.12 <25 NA C13-9 04/03/2013 4.9 37.18 15 40 7.8 112 317 2.01 NM <1 <1 NA <50 <1 6.5 NA NA <5 NA 370 <1 67 <5 0.33 <1 NA NA 0.2 <0.2 42 NA C13-9 07/01/2013 5.3 34.74 16 48 1.9 38 243 8.43 NM <1 <1 NA <50 <1 6.4 NA NA 6 NA 2080 <1 92 6 0.33 1.12 NA NA 0.11 <0.2 26 NA C13-9 11/05/2013 4.7 35.72 15 38 2.8 378 583 8.7 NM <1 <1 NA <50 <1 6.8 NA NA <5 NA 883 <1 60 <5 0.34 <1 NA NA 0.21 <0.2 28 NA C13-9 04/16/2014 4.8 36.13 15 38 2.2 347 552 3.5 NM <1 <1 NA <50 <1 6.9 NA NA <5 NA 248 <1 39 <5 0.33 <1 NA NA 0.13 <0.2 <25 NA C13-9 07/09/2014 4.8 35.89 16 38 2.59 353 558 5.3 NM <1 <1 NA <50 <1 6.8 NA NA <5 NA 531 <1 47 <5 0.35 <1 NA NA 0.12 <0.2 28 NA C13-9 11/03/2014 4.9 37.18 15 47 2.01 228 433 8.34 NM <1 <1 NA <50 <1 6.9 NA NA <5 NA 341 <1 41 <5 0.29 <1 NA NA 0.14 <0.2 26 NA C13-9 04/07/2015 5.0 37.29 16 38 2.24 114 319 8.79 NM <1 <1 <1 <50 <1 6.7 NA NA <5 1.36 653 <1 So <5 0.29 <1 4.1 NA 0.24 <0.2 35 NA C13-9 07/06/2015 4.9 37.02 16 41 2.25 159 364 4.5 NM <1 <1 <1 <50 <1 6.7 NA NA <5 <1 158 <1 40 <5 1.2 <1 4.06 8 0.11 <0.2 25 <0.3 C13-9 09/09/2015 5.0 37.50 16 37 1.97 223 428 7.51 NM NA NA NA NA NA NA NA 0.109 NA NA NA NA NA NA NA NA NA NA NA NA NA NA C13-9 11/02/2015 4.5 36.57 16 37 2.7 575 780 9 NM <1 <1 <1 <50 <1 6.6 NA NA <5 1.64 1050 <1 65 <5 1.1 <1 4.07 8 0.36 <0.2 <25 1.33 C13-9 12/08/2015 5.3 37.09 15 36 1.72 204 409 3.38 0 <0.5 <0.5 Ll <0.2 <50 <0.08 6.7 0.1 NA <0.5 0.8 150 <0.1 34 1.2 NA <0.5 <5 7 <1 <0.1 43 <1 CB-9 DUP 1210812015 5.3 37.09 15 36 1.72 204 409 3.38 0 <0.5 <0.5 L3 <0.2 <50 <0.08 6.8 0.11 NA <0.5 0.77 91 <0.1 33 1.3 NA <0.5 <5 7.1 <1 <0.1 60 D6 <1 C13-9 01/21/2016 5.2 35.48 15 36 1.8 284 489 1.8 0 <1 <1 <1 <50 <1 6.9 0.12 NA <1 <1 84 <1 36 1.28 NA <1 3.89 7 0.14 <0.2 <25 <0.3 C13-9 04/06/2016 5.1 34.71 15 37 2.21 336 541 9.33 NM <1 <1 <1 <50 <1 6.9 0.089 NA <5 1.45 739 <1 52 <5 1.2 <1 4 7 0.25 <0.2 <25 0.763 C13-9 07/05/2016 5.0 36.47 17 36 2.38 348 553 9.75 NM <1 <1 <1 <50 <1 7.1 0.085 NA <5 1.14 294 <1 40 <5 1.2 <1 3.94 7 0.11 <0.2 <25 0.501 C13-9 DUP 07/05/2016 5.0 36.47 17 36 2.38 348 553 9.75 NM <1 <1 <1 <50 <1 NA NA NA 1 1.16 345 <1 44 1.86 NA <1 NA 8 NA <0.2 NA 0.55 C8-95L 0412712015 6.0 36.05 13 76 1.08 130 335 30.4 <0.5 <1 <1 <1 <50 <1 6.1 NA NA 2.86 1.21 475 <1 125 2.13 NA <1 8.54 40 0.74 <0.2 92 0.56 C13-9SL 05/28/2015 5.8 35.98 19 59 1.59 84 289 5.97 <0.5 <1 <1 <1 <50 <1 6.6 NA NA <1 <1 73 <1 71 <1 NA <1 4.15 28 0.57 <0.2 43 <0.3 CB-9SL 09/08/2015 5.8 36.51 16 59 2.61 165 370 3 NM NA NA NA NA NA NA NA 0.111 NA NA NA NA NA NA NA NA NA NA NA NA NA NA CB-9SL 12/08/2015 6.0 35.99 14 56 2.11 198 403 6.44 0 <0.5 <0.5 L3 0.29 <50 <0.08 6.2 0.2 NA 1.3 <0.5 320 0.19 12 0.77 NA <0.5 <5 28 <1 <0.1 93 <1 CB-9SL 01/21/2016 5.8 34.50 9 54 2 225 430 7.1 0 <1 <1 <1 <50 <1 6.5 0.2 NA <1 <1 95 <1 15 <1 NA <1 3 30 0.24 <0.2 41 <0.3 CB-9SL 04/13/2016 5.6 34.05 15 56 1.63 97 302 1.05 NM <1 <1 <1 <50 <1 6.3 0.25 NA <1 <1 23 <1 6 <1 NA <1 3.25 24 0.25 <0.2 54 <0.3 CB-9SL 07/11/2016 5.7 35.64 17 55 1.5 129 334 9.3 NM <1 <1 <1 <50 <1 6.3 0.23 NA 19.3 <1 158 4.89 13 12.4 NA <1 3.27 27 0.72 <0.2 43 0.392 MW-24S 05/11/2015 5.0 11.26 17 75 5.48 72 277 1.77 NM <1 <1 <1 <50 <1 12 NA NA <1 2.05 304 <1 170 1.16 NA <1 3.48 37 0.49 <0.2 54 <0.3 MW-24S 06/01/2015 5.2 11.19 15 79 4.67 97 302 2.74 <0.5 <1 <1 <1 <50 <1 13 NA NA <1 1.02 60 <1 136 1.07 NA <1 3.25 36 0.62 <0.2 66 <0.3 MW-24S 09/02/2015 5.2 11.34 18 78 5.03 193 398 0.96 NM NA NA NA NA NA NA NA 0.152 NA NA NA NA NA NA NA NA NA NA NA NA NA NA MW-24S 12/08/2015 5.2 10.95 14 77 4.81 154 359 0.25 0 <0.5 <0.5 L3 0.23 <50 <0.08 13 0.3 M1 NA <0.5 0.78 <50 <0.1 120 0.75 NA <0.5 <5 35 <1 <0.1 72 <1 MW-24S 01/19/2016 5.3 10.98 12 79 5.12 148 353 0.8 0 <1 <1 <1 <50 <1 14 0.31 NA <1 1.06 <10 <1 150 1.02 NA <1 3.31 37 0.66 <0.2 36 <0.3 MW-24S 0411212016 5.2 11.30 14 81 4.66 205 410 0.75 NM <1 <1 <1 232 <1 14 0.26 NA <1 <1 235 82 <1 359 1.04 NA <1 3.38 228 0.74 <0.2 63 <0.3 MW-24S DUP 0411212016 5.2 11.30 14 81 4.66 205 410 0.75 NM <1 <7 FE<,:::F<<50 50 <1 15 0.26 NA <1 <1 16 82 <1 153 1.05 NA <1 3.34 40 0.78 <0.2 57 <0.3 MW-24S 07/08/2016 4.3 10.81 17 80 6.21 S 325 530 1.22 NM <1 <1 <1 14 0.26 NA <1 <1 <10 <1 136 <1 NA <1 3.35 40 0.62 <0.2 52 <0.3 P:\Duke Energy Progress, 1026\102. Asheville Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 4-6 Saprolite Exceedances Inc Prov BG Page 1 of 4 TABLE 4-6 SAPROLITE GROUNDWATER EXCEEDANCES INCORPORATING PROVISIONAL BACKGROUND ASHEVILLE STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, ARDEN, NC Analytical Parameter pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Beryllium Boron Cadmium Chloride Chromium (VI) Chromium (VI) Speciation Chromium Cobalt Iron Lead Manganese Nickel Nitrate Selenium Sodium Strontium Sulfate Thallium TotalS Dissolved olids Vanadium Reporting Units S.U. ft Deg C umhos/cm mg/L mV mV NTUs mg/L ug/L ug/L ug/L ug/L ug/L mg/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L mg/L ug/L mg/L ug/L mg/L ug/L mg/L ug/L SSA NCAC 02L Standard 6.5-8.5 NE NE NE NE NE NE NE NE 1* 10 4* 700 2 250 0.07A 0.07A 10 1* 300 15 50 100 10 20 NE NE 250 0.2* 500 0.3* Provisional Background 4.4-6.0 NE NE NE NE NE NE NE NE NE NE 0.39 NE NE 14 1.9 1.9' 9.0 4.8 4293 NE 229 8.6 1.8 1.3 5.0 37 1.3 0.12 275 1.5 Sample ID Sample Collection Date Field Parameters Analytical Results Saprolite ABMW-2S 03/17/2015 4.2 25.53 17 813 0.41 99 304 2.39 1 <1 11.2 11 760 2.96 12 NA NA 1.47 569 1120 <1 17500 233 NA 10.7 19.3 258 610 0.369 640 <0.3 ABMW-2S 05/27/2015 4.1 26.05 19 832 0.26 122 327 9.33 <0.5 <1 16 12.5 751 3.3 14 NA 0.054 <1 578 557 <1 16200 247 NA 10.8 15.7 259 730 0.333 670 0.666 ABMW-2S DUP 05/27/2015 4.1 26.05 19 832 0.26 122 327 9.33 <0.5 <1 16 12.6 761 3.24 14 NA NA <1 576 453 <1 16500 245 NA 10.3 15.7 262 720 0.329 660 0.421 ABMW-2S 09/01/2015 3.9 26.90 17 746 1.5 235 440 1.2 NM NA NA NA NA NA NA NA 0.047 B NA NA NA NA NA NA NA NA NA NA NA NA NA NA ABMW-2S 12/09/2015 4.2 25.07 17 773 0.36 240 445 1.17 0 <0.5 18.9 11.6 730 2.9 13.7 <0.03 NA <0.5 417 <100 0.11 9600 168 NA 14.5 <25 220 397 M6 0.24 611 <1 ABMW-2S 01/21/2016 4.1 24.38 16 866 0.22 165 370 0.43 0 <1 23.5 12.4 851 3.48 16 <0.06 NA <1 589 27 <1 18400 286 NA 2.48 16.2 340 630 0.258 710 0.364 ABMW-SS 04/13/2015 5.9 16.44 14 211 3.53 51 256 2.62 <0.5 <1 <1 <1 <50 <1 7.8 NA NA <1 14.3 207 <1 395 2.28 NA <1 7.16 87 17 <0.2 130 <0.3 ABMW-5S 05/26/2015 5.8 18.30 20 222 0.42 -36 169 25.7 3 <1 <1 <1 <50 <1 5.2 NA 0.017 <1 16.7 4800 <1 537 3.37 NA <1 6.34 83 20 0.309 130 <0.3 ABMW-5S 09/01/2015 5.7 19.66 21 221 4.8 120 325 2.6 NM NA NA NA NA NA NA NA <0.006 NA NA NA NA NA NA NA NA NA NA NA NA NA NA ABMW-7S 04/12/2015 6.5 24.47 18 355 3.73 117 322 6.47 <0.5 <1 <1 <1 596 <1 6.3 NA NA 1.24 6.12 216 <1 798 <1 NA 3.65 13.9 333 82 0.311 190 0.76 ABMW-7S 05/27/2015 6.3 25.86 21 423 0.5 -35 170 1.96 <0.5 <1 <1 <1 789 <1 7.3 NA 0.232 <1 3.5 170 <1 763 <1 NA 1.65 11.6 442 120 0.664 200 <0.3 ABMW-7S 09/03/2015 6.3 28.71 19 420 0.8 122 327 4.1 NM NA NA NA NA NA NA NA 0.026 j NA NA NA NA NA NA NA NA NA NA NA NA NA NA APD-1 02/18/2014 5.7 5.41 8 653 0.91 271 NM 5.8 NM <1 1.35 NA 949 <1 48 NA NA <5 8.03 1770 <1 4720 <5 NA <1 NA NA 290 <0.2 580 NA APD-7 02/17/2014 5.3 25.10 12 214 0.61 219 NM 19.1 NM <1 <1 NA 132 <1 20 NA NA <5 <1 739 <1 38 <5 NA 16.4 NA NA 25 <0.2 110 NA APD-7 05/13/2015 5.5 25.60 21 169 1.2 66 271 4.76 <0.5 <1 <1 <1 119 <1 10 NA NA <1 <1 38 <1 12 <1 NA 19 4.07 47 27 <0.2 96 <0.3 CB-2 11/17/2010 5.3 19.13 13 212 NM NM NM 9.29 NM <0.5 <5 NA 241 <0.08 8.5 NA NA <5 NA 705 <5 2570 <5 0.11 <10 NA NA 92.9 0.18 158 NA C13-2 04/12/2011 5.3 17.31 14 244 0.4 -61 144 6.35 NM <0.5 <5 NA 229 <0.08 6.9 NA NA <5 NA 292 <5 2630 <5 <0.1 <10 NA NA 93.8 0.16 113 NA C13-2 07/15/2011 5.3 18.89 16 260 0.56 47 252 1.4 NM <0.5 <5 NA 245 <0.08 6.9 B NA NA <5 NA <50 <5 2S80 <5 <0.2 <10 NA NA 80.6 0.18 133 B NA C13-2 11/09/2011 5.5 19.79 13 278 0.74 -93 112 1.81 NM <0.5 <5 NA 239 <0.08 8.7 NA NA <5 NA 197 <5 2690 <5 <0.2 <10 NA NA 95.8 0.18 262 NA C13-2 04/10/2012 5.2 18.64 15 253 0.44 -60 145 7.53 NM <0.5 <5 NA 219 <0.08 19.7 NA NA <5 NA <50 <5 2560 <5 <0.2 <10 NA NA 69.4 0.17 161 NA C13-2 DUP 04/10/2012 5.2 18.64 15 253 0.44 -60 145 7.53 NM <0.5 <5 NA 219 <0.08 11.4 NA NA <5 NA 54.5 <5 2540 <5 <0.2 <10 NA NA 74.6 0.17 162 NA C13-2 07/16/2012 5.3 19.98 19 279 0.98 382 587 2.31 NM <0.5 <5 NA 226 0.12 10.1 NA NA <5 NA 109 <5 2660 <5 <0.02 <10 NA NA 89.7 0.2 154 NA C13-2 11/15/2012 5.3 20.58 13 277 0.61 271 476 5.44 NM <0.5 <5 NA 230 0.098 10.5 NA NA <5 NA 146 <5 2580 <5 0.029 B <10 NA NA 83.6 0.21 153 NA CB-2 04/03/2013 5.3 18.32 14 263 0.82 93 298 2.54 NM <1 <1 NA 227 <1 9.3 NA NA <5 NA 34 <1 2890 <5 0.05 1.17 NA NA 86 <0.2 160 NA C13-2 07/01/2013 6.4 18.42 15 280 0.54 -103 102 1.37 NM <1 <1 NA 223 <1 8.8 NA NA <5 NA 243 <1 2900 <5 0.32 1.58 NA NA 79 <0.2 160 NA C13-2 DUP 07/01/2013 6.4 18.42 15 280 0.54 -103 102 1.37 NM <1 <1 NA 222 <1 8.7 NA NA <5 NA 175 <1 2910 <5 0.32 1.45 NA NA 79 <0.2 150 NA C13-2 11/06/2013 5.1 22.04 14 277 0.4 564 769 7.2 NM <1 <1 NA 307 <1 8.1 NA NA <5 NA 214 <1 3030 <5 <0.023 3.92 NA NA 91 <0.2 160 NA C13-2 04/16/2014 5.2 21.77 12 204 0.4 450 655 2.4 NM <1 <1 NA 257 <1 4.3 NA NA <5 NA 169 <1 2950 <5 0.92 <1 NA NA 68 <0.2 120 NA C13-2 07/09/2014 5.2 22.44 15 189 0.68 322 527 8 NM <1 <1 NA 240 <1 3.6 NA NA <5 NA 335 <1 3030 <5 1.4 <1 NA NA 59 <0.2 120 NA C13-2 11/03/2014 5.2 23.45 13 184 0.4 298 503 4.09 NM <1 <1 NA 209 <1 3.1 NA NA <5 NA 70 <1 2920 <5 1.7 <1 NA NA 50 <0.2 92 NA C13-2 04/07/2015 5.4 23.55 15 159 0.61 119 324 8.73 NM <1 <1 <1 174 <1 2.9 NA NA <5 4.26 319 <1 3030 <5 2.2 <1 9.94 NA 38 <0.2 100 NA C13-2 07/07/2015 5.3 24.00 18 148 0.83 115 320 4.43 NM <1 <1 <1 155 <1 2.7 NA NA <5 4.17 146 <1 3000 <5 9.8 <1 10 13 35 <0.2 93 <0.3 C13-2 11/03/2015 5.3 24.39 15 157 1.3 22 227 3.5 NM <1 <1 <1 198 <1 2.9 NA NA <5 5.7 97 <1 2750 <5 10 <1 10.8 19 38 0.483 81 <0.3 C13-4 11/18/2010 NM 17.58 13 217 NM NM NM 0.22 NM <0.5 <5 NA 404 <0.08 11.6 NA NA <5 NA <50 <5 368 <5 1.9 10.5 NA NA 96.9 <0.1 163 NA C13-4 04/12/2011 5.1 16.48 14 259 2.92 -79 126 3.74 NM <0.5 <5 NA 344 <0.08 10.2 NA NA <5 NA 90.5 <5 381 <5 1.8 <10 NA NA 85 <0.1 III NA C13-4 07/14/2011 5.0 17.52 16 267 2.92 -29 176 0.65 NM <0.5 <5 NA 356 <0.08 9.8 B NA NA <5 NA <50 <5 411 <5 1.7 10.7 NA NA 84.1 <0.1 146 B NA C13-4 11/08/2011 5.1 17.60 15 291 2.14 -54 151 6.83 NM <0.5 <5 NA 415 <0.08 10.6 NA NA <5 NA 50.7 <5 465 <5 1.7 <10 NA NA 66.5 <0.1 180 NA C13-4 DUP 11/08/2011 5.1 17.60 15 291 2.14 -54 151 6.83 NM <0.5 <5 NA 419 <0.08 11.9 NA NA <5 NA 82.2 <5 469 <5 1.7 <10 NA NA 65.6 <0.1 293 NA C13-4 04/10/2012 5.1 16.80 14 261 2.32 -49 156 1.62 NM <0.5 <5 NA 324 0.085 11.7 NA NA <5 NA <50 <5 414 <5 1.8 <10 NA NA 73.4 <0.1 175 NA C13-4 07/16/2012 5.1 17.56 17 284 2.44 184 389 1.54 NM <0.5 <5 NA 371 <0.08 12.4 NA NA <5 NA 72.7 <5 475 <5 1.5 10.4 NA NA 94.5 <0.1 176 NA C13-4 11/15/2012 5.2 17.40 15 308 2.32 263 468 0.36 NM <0.5 <5 NA 391 0.12 12.4 NA NA <5 NA <50 <5 483 <5 1.5 <10 NA NA 91.9 <0.1 180 NA C13-4 04/03/2013 5.0 16.37 13 265 3.45 108 313 3.93 NM <1 <1 NA 322 <1 9 NA NA <5 NA 34 <1 464 <5 1.3 10 NA NA 97 <0.2 180 NA C13-4 07/01/2013 5.1 16.44 16 243 4.2 17 222 0.78 NM <1 <1 NA 288 <1 6.7 NA NA <5 NA 17 <1 393 <5 1.1 8.93 NA NA 75 <0.2 150 NA C13-4 11/06/2013 5.0 18.19 15 307 2.7 377 582 5.4 NM <1 <1 NA 525 <1 9.5 NA NA <5 NA 97 <1 591 <5 1.3 12.4 NA NA 120 <0.2 200 NA C13-4 04/16/2014 5.2 17.69 13 322 2.9 241 446 1.2 NM <1 <1 NA 527 <1 8.9 NA NA <5 NA 39 <1 597 <5 1.9 10.4 NA NA 130 <0.2 210 NA C13-4 DUP 04/16/2014 5.2 17.69 13 322 2.9 241 446 1.2 NM <1 <1 NA 519 <1 6.9 NA NA <5 NA 33 <1 593 <5 0.33 10.3 NA NA 130 <0.2 220 NA C13-4 07/09/2014 5.1 18.70 17 331 3.93 407 612 4.2 NM <1 <1 NA 567 <1 8.6 NA NA <5 NA 209 <1 677 <5 2.3 9.69 NA NA 130 <0.2 230 NA C13-4 11/03/2014 5.1 19.70 15 366 3.77 434 639 9.59 NM <1 <1 NA 653 <1 9 NA NA <5 NA 241 <1 809 <5 2.8 8.43 NA NA 130 <0.2 230 NA C13-4 04/08/2015 5.1 19.00 13 340 4.52 112 317 6.73 NM <1 <1 <1 590 <1 7.5 NA NA <5 1.63 291 <1 747 <5 2.8 8 18.1 NA 140 <0.2 240 NA C13-4 07/08/2015 5.2 20.38 18 335 3.12 206 357 18 NM <1 <1 <1 598 <1 7.6 NA NA <5 5.41 3340 1.57 920 <5 16 7.58 17.7 213 130 <0.2 230 4.68 C13-4 11/04/2015 5.2 20.30 16 359 2.23 0 205 8.15 NM <1 <1 <1 683 <1 8.9 NA NA <5 2.47 226 <1 975 <5 8.9 6.23 18.5 B2 243 140 <0.2 220 0.446 C13-4 12/09/2015 5.1 18.59 14 291 5.8 262 467 10.1 0 <0.5 <0.5 <0.2 540 <0.08 4.5 0.23 NA 0.55 B 1.7 210 0.22 570 1.4 NA 8.8 17.4 190 115 <0.1 198 <1 C13-4 01/19/2016 5.3 16.89 9 212 5.97 164 369 2.83 0 <1 <1 <1 378 <1 2.2 <0.03 NA <1 1.05 10 <1 382 <1 NA 7.36 14.9 136 100 <0.2 120 <0.3 C13-4 04/05/2016 5.2 18.31 13 213 8.52 329 534 2.41 NM <1 <1 <1 350 <1 2 NA NA <5 <1 111 <1 408 <5 1 5.57 15.1 138 93 <0.2 140 <0.3 C13-4 DUP 04/05/2016 5.2 1 18.31 1 13 1 213 8.52 329 534 2.41 NM <1 <1 <1 348 <1 2 NA NA <5 <1 117 <1 406 <5 1.1 5.24 15.2 137 96 <0.2 140 <0.3 C13-4 07/05/2016 5.2 21.42 26 241 3.33 1 383 1 588 1 4.5 1 NM <1 <1 I <1 1 400 <1 5.2 NA NA 1 <5 1 1.64 1 28 <1 722 <5 16 1 4.65 14.7 178 92 <0.2 150 <0.3 DP-1 02/17/2014 6.9 11.62 11 1229 0.17 1 -107 1 NM 1 48.1 1 NM <1 1220 1 NA 1 1140 <1 8.2 1 NA I NA I <5 1 41.8 1 10100 1 <1 1 2430 9 j NA I <1 NA NA 160 0.73 730 NA P:\Duke Energy Progress, 1026\102. Asheville Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 4-6 Saprolite Exceedances Inc Prov BG Page 2 of 4 TABLE 4-6 SAPROLITE GROUNDWATER EXCEEDANCES INCORPORATING PROVISIONAL BACKGROUND ASHEVILLE STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, ARDEN, NC Analytical Parameter pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Beryllium Boron Cadmium Chloride Chromium (VI) Chromium (VI) Speciation Chromium Cobalt Iron Lead Manganese Nickel Nitrate Selenium Sodium Strontium Sulfate Thallium TotalS Dissolved olids Vanadium Reporting Units S.U. ft Deg C umhos/cm mg/L mV mV NTUs mg/L ug/L ug/L ug/L ug/L ug/L mg/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L mg/L ug/L mg/L ug/L mg/L ug/L mg/L ug/L SSA NCAC 02L Standard 6.5-8.5 NE NE NE NE NE NE NE NE 1* 10 4* 700 2 250 0.07A 0.07A 10 1* 300 15 50 100 10 20 NE NE 250 0.2* 500 0.3* Provisional Background 4.4-6.0 NE NE NE NE NE NE NE NE NE NE 0.39 NE NE 14 1.9 1.9' 9.0 4.8 4293 NE 229 8.6 1.8 1.3 5.0 37 1.3 0.12 275 1.5 Sample ID Sample Collection Date Field Parameters Analytical Results DP-1 05/13/2015 7.1 11.94 21 550 0.74 50 255 39.6 2.25 <1 1180 <1 378 <1 2.3 NA NA <1 20.7 8770 <1 1570 3.64 NA <1 6.22 1810 96 <0.2 370 3.12 GW-1 12/14/2007 4.5 20.39 14 98 NM NM NM NM NM <5 6.3 NA <10 <1 8.2 NA NA 35.7 NA 56800 29.4 NA 34.1 6.3 <10 NA NA <5 0.12 50 NA GW-1 04/21/2008 3.8 19.78 14 98 NM NM NM NM NM <5 <5 NA <10 <1 <5 NA NA <5 NA 2880 <5 189 8.7 8.2 <10 NA NA <5 <0.5 40 NA GW-1 10/13/2008 4.4 19.95 13 72 NM NM NM NM NM <5 <5 NA <50 <1 <5 NA NA <5 NA 122 <5 74.8 5 5.2 <10 NA NA <5 <0.1 54 NA GW-1 04/14/2009 4.3 19.70 14 89 NM NM NM NM NM <5 <5 NA <50 <1 <5 NA NA <5 NA 575 <5 98.5 7.5 7.7 <10 NA NA <5 <0.5 70 NA GW-1 10/16/2009 4.5 19.82 14 102 NM NM NM NM NM <5 <5 NA <50 <1 <5 NA NA <5 NA 232 <5 100 6.5 8.2 <10 NA NA <5 <0.5 74 NA GW-1 05/11/2010 3.1 19.63 13 106 NM NM NM NM NM <5 <5 NA <50 <1 <5 NA NA <5 NA 459 <5 90.3 5 8.6 <10 NA NA <5 <0.1 26 NA GW-1 11/17/2010 4.5 20.16 11 69 NM NM NM 6.32 NM <0.5 <5 NA <50 <0.08 <5 NA NA <5 NA 63.6 <5 81 <5 7.7 <10 NA NA <5 <0.1 46 NA GW-1 04/12/2011 4.3 19.33 13 112 5.06 49 254 7.46 NM <0.5 <5 NA <50 <5 <5 NA NA <5 NA 248 <5 138 7.1 10.9 <10 NA NA <5 <0.1 44 NA GW-1 07/14/2011 4.3 19.88 16 87 5.01 -84 121 2.77 NM <0.5 <5 NA <50 <0.08 <5 NA NA <5 NA 79.6 <5 134 7 B 7.5 <10 NA NA <5 <0.1 <25 NA GW-1 11/09/2011 4.6 20.54 14 96 4.36 -82 123 2.28 NM <0.5 <5 NA <50 <0.08 <5 NA NA <5 NA 102 <5 205 5.9 7.9 <10 NA NA <5 <0.1 86 NA GW-1 04/10/2012 4.6 20.03 16 104 3.95 -67 138 3.07 NM <0.5 <5 NA <50 <0.08 <5 NA NA <5 NA 96 <5 341 5.9 8 <10 NA NA <5 <0.1 64 NA GW-1 07/16/2012 4.4 19.92 16 93 2.92 297 502 7.98 NM <0.5 <5 NA 65.1 0.082 4.7 NA NA <5 NA 147 <5 310 <5 7.1 <10 NA NA <2 <0.1 57 NA GW-1 11/15/2012 4.6 20.69 15 96 2.26 348 553 5.76 NM <0.5 <5 NA <50 0.1 4.9 NA NA <5 NA 480 <5 293 <5 6 <10 NA NA 3.1 <0.1 37 NA GW-1 04/03/2013 4.5 20.68 15 93 2.48 137 342 2.57 NM <1 <1 NA <50 <1 5.4 NA NA <5 NA 31 <1 442 <5 5.9 2.04 NA NA 1.9 <0.2 69 NA GW-1 07/01/2013 4.8 20.47 17 125 3.42 12 217 2.17 NM <1 <1 NA <50 <1 6.2 NA NA <5 NA 49 <1 612 6 7.1 3.32 NA NA 3.2 <0.2 80 NA GW-1 11/05/2013 4.5 20.94 14 148 2.3 436 641 3.1 NM <1 <1 NA <50 <1 7 NA NA <5 NA 89 <1 737 5 7.8 4.9 NA NA 15 <0.2 87 NA GW-1 04/17/2014 4.6 20.55 15 138 1.6 290 495 8 NM <1 1.25 NA <50 <1 6 NA NA <5 NA 275 <1 692 <5 6.4 1.47 NA NA 17 <0.2 75 NA GW-1 07/10/2014 4.4 20.14 17 154 1.5 364 569 1.9 NM <1 1.61 NA <50 <1 7.1 NA NA <5 NA 1 84 <1 683 <5 6.2 1.53 NA NA 24 <0.2 85 NA GW-1 11/04/2014 4.7 20.95 17 155 0.98 337 542 8.62 NM <1 <1 NA <50 <1 6.7 NA NA <5 NA 568 <1 534 <5 4.1 1.56 NA NA 27 <0.2 75 NA GW-1 04/07/2015 4.8 20.81 15 123 0.89 121 326 0.67 NM <1 <1 <1 <50 <1 6.6 NA NA <5 4.71 15 <1 507 <5 3.2 1.6 1.09 NA 25 <0.2 83 NA GW-1 07/06/2015 4.8 20.58 19 137 1.1 263 468 4.99 NM <1 <1 <1 <50 <1 6.6 NA NA <5 4.76 101 <1 551 <5 13 1.78 1.05 <5 35 <0.2 78 <0.3 GW-1 11/02/2015 5.2 20.55 17 115 1.4 541 746 0.8 NM <1 <1 <1 <50 <1 6.6 NA NA <5 3.79 26 <1 397 <5 7.4 1.33 1.41 <5 27 0.21 67 <0.3 GW-1 12/09/2015 4.8 20.09 16 127 1.1 355 560 4.64 0 <0.5 0.94 0.23 <50 <0.08 6.7 1 NA 1.2 5.6 <50 0.16 460 3.2 NA 1.7 <5 <5 24.5 <0.1 84 <1 L3 GW-1 01/18/2016 4.8 20.19 15 161 1.8 397 602 8.02 0 <1 <1 <1 <50 <1 5.5 0.87 NA 1.2 6.13 104 <1 725 3.4 NA 1.53 1.13 <5 29 <0.2 82 <0.3 GW-1 04/05/2016 4.8 20.65 14 220 1.51 360 565 2.43 NM <1 1.26 <1 <50 <1 7.9 NA NA <5 6.92 141 <1 1070 <5 32 2.32 1.13 <5 52 <0.2 120 <0.3 GW-1 07/06/2016 4.8 20.46 22 180 0.55 366 571 2.78 NM <1 <1 <1 <50 <1 6.9 NA NA <5 5.06 29 <1 668 <5 15 B2 2.17 1.32 <5 50 <0.2 120 <0.3 GW-1 DUP 07/06/2016 4.8 20.46 22 180 0.55 366 571 2.78 NM <1 <1 <1 <50 <1 6.9 NA NA <5 4.98 33 <1 657 <5 15 B2 2.17 1.29 <5 58 <0.2 110 <0.3 GW-3 12/14/2007 5.7 12.76 16 498 NM NM NM NM NM <5 <5 <1 1120 <1 12.1 NA NA <5 NA 337 <5 NA <5 <0.1 <10 NA NA 150 0.10 320 NA GW-3 04/21/2008 6.4 12.15 14 463 NM NM NM NM NM <5 <5 <1 1300 <1 14.2 NA NA <5 NA 889 <5 1370 <5 <0.1 <10 NA NA 127 <0.1 300 NA GW-3 10/13/2008 5.7 12.69 16 504 NM NM NM NM NM <5 <5 <1 1290 <1 21.2 NA NA <5 NA 86.1 <5 1850 <5 <0.1 <10 NA NA 148 <0.1 370 NA GW-3 04/14/2009 5.7 11.93 14 500 NM NM NM NM NM <5 <5 <1 1320 <1 24.7 NA NA <5 NA 122 <5 1120 <5 <0.1 <10 NA NA 142 <0.5 218 NA GW-3 10/16/2009 5.7 11.88 16 470 NM NM NM NM NM <5 <5 <1 1190 <1 26.8 NA NA <5 NA 261 <5 736 <5 0.25 <10 NA NA 156 <0.5 328 NA GW-3 05/11/2010 5.7 11.50 14 481 NM NM NM NM NM <5 <5 <1 1240 <1 34.2 NA NA <5 NA 3470 <5 1770 <5 <0.1 <10 NA NA 143 <0.1 290 NA GW-3 02/18/2014 5.7 12.40 11 678 2.03 341 NM 9.5 NM <1 <1 NA 1400 <1 51 NA NA <5 18.3 1100 <1 385 <5 NA 1.59 NA NA 210 <0.2 470 NA GW-3 05/14/2015 5.6 12.99 17 476 2.72 78 283 6.98 <0.5 <1 <1 <1 1170 <1 39 NA NA <1 17.2 485 <1 555 <1 NA 2.84 12.5 679 170 <0.2 440 0.301 GW-3 12/09/2015 5.7 11.92 15 295 2 279 484 9.3 0 <0.5 <0.5 <0.2 760 <0.08 14.7 0.16 NA <0.5 3.9 310 0.17 150 0.57 NA 3.8 17.8 420 83.9 <0.1 221 <1 Ll GW-3 01/21/2016 5.7 11.77 12 221 0.37 119 324 3.37 1 <1 <1 <1 477 <1 17 <0.03 NA <1 51.5 955 <1 3200 2.41 NA 1.17 12.7 316 50 <0.2 200 <0.3 GW-3 04/25/2016 5.8 13.00 16 880 1.26 304 509 1.96 NM <1 <1 <1 1840 <1 89 NA NA <1 1.66 NA <1 NA NA NA <1 NA NA 310 <0.2 670 NA VW-6S 04/15/2015 5.5 1.55 14 332 0.33 115 320 9.52 <0.5 <1 <1 <1 1090 <1 12 NA NA <1 15.6 645 <1 10000 1.9 NA <1 14.1 147 120 <0.2 220 0.543 VW-6S 05/21/2015 5.3 4.51 16 343 0.45 51 256 3.94 <0.5 <1 <1 <1 1050 <1 12 NA NA <1 6.17 225 <1 9970 <1 NA <1 14.6 141 130 <0.2 220 <0.3 VW-8S 03/06/2015 6.0 7.69 11 2013 0.79 41 246 4.25 <0.5 <1 <1 <1 5030 <1 450 NA NA <1 7.73 162 <1 2850 2.47 NA 1.17 18.8 4410 260 <0.2 1500 0.342 VW-8S 05/27/2015 5.9 6.93 23 1949 0.95 108 313 8.15 <0.5 <1 <1 <1 5330 <1 450 NA 0.045 <1 3.09 17 <1 2830 1.65 NA 1.41 15 4160 290 <0.2 1900 <0.3 VW-8S 09/01/2015 6.2 7.34 25 1897 1.18 169 374 1.02 NM NA NA NA NA NA NA NA 0.026 B NA NA NA NA NA NA NA NA NA NA NA NA NA NA VW-8S 12/09/2015 6.0 6.27 17 1810 0.8 272 477 2.31 0 <0.5 0.74 <0.2 5600 <0.08 398 0.035 NA <0.5 2.8 <50 <0.1 2600 1.5 NA 1.2 14.4 3700 243 <0.1 1280 <1 L3 VW-8S 01/20/2016 6.1 5.86 11 1851 0.4 197 402 0.5 0 <1 <1 <1 61.40 <1 420 <0.03 NA <1 2.75 15 <1 2920 1.56 NA 1.13 14.3 3540 260 <0.2 1300 <0.3 MW-9S 04/27/2015 5.5 28.52 19 2252 2.04 132 337 4.16 <0.5 <1 <1 <1 4730 <1 560 NA NA <1 15.8 70 <1 4290 5.24 NA 36.6 18.1 3080 250 0.294 1700 <0.3 MW-95 05/21/2015 5.5 28.56 20 2291 1.19 37 242 5.59 <0.5 <1 <1 <1 4800 <1 570 NA NA <1 5.9 211 <1 3630 3.92 NA 40.6 17.5 2950 270 <0.2 1700 <0.3 MW-95 12/09/2015 5.2 28.20 12 2182 1.3 429 634 3.32 0 <0.5 <0.5 <0.2 5400 0.18 <1 0.37 NA 0.64 4 <50 <0.1 3400 3.2 NA 39.7 17.2 3000 290 0.19 1410 <1 L1 MW-95 01/20/2016 5.7 27.69 7 2135 1.4 362 567 1 NM <1 <1 <1 5560 <1 530 0.5 NA 16.1 3.64 78 <1 3410 9.71 NA 34 17 2600 290 <0.2 1500 <0.3 P-100 05/19/2015 5.4 75.12 22 359 0.22 -124 81 9.01 <0.5 <1 <1 <1 732 <1 12 NA NA 12.7 35.9 545 <1 3380 13.6 NA <1 17.2 18 140 <0.2 230 0.457 P-101 05/19/2015 5.7 86.39 22 418 0.24 -6 199 2.53 <0.5 <1 <1 <1 1200 <1 12 NA NA 2.34 14.3 155 <1 2320 4.18 NA <1 14.3 362 160 <0.2 260 <0.3 P-103 05/20/2015 5.6 48.53 20 209 0.19 -80 125 8.91 0.5 <1 <1 <1 420 <1 11 NA NA 6.07 20 724 <1 7410 10.1 NA <1 5.8 25 50 <0.2 120 0.488 P-104 05/19/2015 5.7 44.84 21 222 0.87 -21 184 13.3 <0.5 <1 <1 <1 194 <1 7.1 NA NA 1.64 26.8 737 <1 1150 3.56 NA 1.37 6.04 88 41 <0.2 140 0.559 P-105 05/13/2015 5.0 44.78 20 70 3.56 74 279 8.09 NM <1 <1 <1 <50 <1 9 NA NA 2.5 3.97 422 <1 120 5.01 NA <1 2.58 26 3.1 <0.2 44 0.584 PZ-15 12/14/2006 6.6 11.70 16 1 NM NM NM NM NM 4.8 <2 <0.7 345 <0.5 7.2 NA NA <2 NA 987 <2 463 2.8 0.37 <2 76.2 NA 180 <4 397 NA PZ-8 12/14/2006 5.8 49.49 14 1 NM NM NM NM NM <2 476 <0.7 1200 <0.5 7.5 NA NA <2 NA 22500 <2 2720 <2 0.54 <2 5.2 NA 40 <4 310 NA PZ-12 12/14/2006 7.1 12.54 14 0 NM NM NM NM NM <2 2 <0.7 574 <0.5 6.7 NA NA <2 NA 233 <2 7880 2.5 0.41 <2 23 NA 110 <4 222 NA PZ-19 12/14/2006 5.7 17.63 14 0 NM NM NM NM NM 10.4 5.2 <0.7 623 0.7 6.1 NA NA 9.3 1 NA 1 595 <2 76.2 8.7 0.99 <2 21.4 NA 94 5.8 191 NA P:\Duke Energy Progress, 1026\102. Asheville Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 4-6 Saprolite Exceedances Inc Prov BG Page 3 of 4 TABLE 4-6 SAPROLITE GROUNDWATER EXCEEDANCES INCORPORATING PROVISIONAL BACKGROUND ASHEVILLE STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, ARDEN, NC Analytical Parameter pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Beryllium Boron Cadmium Chloride Chromium (VI) Chromium (VI) Speciation Chromium Cobalt Iron Lead Manganese Nickel Nitrate Selenium Sodium Strontium Sulfate Thallium TotalS Dissolved olids Vanadium Reporting Units S.U. ft Deg C umhos/cm mg/L mV mV NTUs mg/L ug/L ug/L ug/L ug/L ug/L mg/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L mg/L ug/L mg/L ug/L mg/L ug/L mg/L ug/L SSA NCAC 02L Standard 6.5-8.5 NE NE NE NE NE NE NE NE 1* SO 4* 700 2 250 0.07A 0.07A 10 1* 300 15 50 100 10 20 NE NE 250 0.2* 500 0.3* Provisional Background 4.4-6.0 NE NE NE NE NE NE NE NE NE NE 0.39 NE NE 14 1.9 1.9' 9.0 4.8 4293 NE 229 8.6 1.8 1.3 5.0 37 1.3 0.12 275 1.5 Sample ID Sample Collection Date Field Parameters Analytical Results PZ-19 06/12/2007 7.3 17.66 16 329 NM NM NM NM NM <0.1 0.42 0.88 478 0.23 7.16 NA NA 82.2 NA 18700 0.7 179 59.5 1.52 2.9 NA NA 104 0.43 214 NA PZ-19 12/13/2007 5.6 17.74 22 373 NM NM NM NM NM <5 <5 <1 483 <1 12.3 NA NA 81.7 NA 7210 <5 NA 55.5 0.95 <10 NA NA 112 0.22 272 NA PZ-19 04/21/2008 6.5 17.71 19 357 NM NM NM NM NM <5 <5 <1 558 <1 11.3 NA NA 8.5 NA 572 <5 81.6 5.7 0.97 <10 NA NA 113 0.16 230 NA PZ-19 10/13/2008 5.8 17.34 17 373 NM NM NM NM NM <5 <5 <1 498 <1 13.3 NA NA 6.3 NA 558 <5 23.8 <5 1.4 <10 NA NA 122 0.13 262 NA PZ-19 05/11/2010 5.9 17.63 16 323 NM NM NM NM NM <5 <5 <1 547 <1 12.2 NA NA 15.8 NA 1590 <5 38.6 8.8 1.3 <10 NA NA 121 0.16 160 NA PZ-19 02/19/2014 5.9 21.77 14 488 0.5 301 NM 2.3 NM <1 <1 NA 1000 <1 12 NA NA <5 <1 151 <1 238 <5 NA <1 NA NA 170 0.2 310 NA PZ-19 05/20/2015 5.7 24.34 22 450 2.48 117 322 9.77 <0.5 2.16 <1 <1 969 <1 9.8 NA NA 4.34 <1 471 <1 272 5.63 NA <1 16.9 565 170 0.252 NA 0.99 PZ-22 12/14/2006 5.5 1.30 10 0 NM NM NM NM NM 3.3 <2 <0.7 706 0.5 6 NA NA <2 NA 351 <2 1570 2.1 0.52 <2 19.6 NA 100 <4 198 NA PZ-22 06/12/2007 7.4 1.58 16 318 NM NM NM NM NM <0.1 0.85 0.22 579 0.48 7.35 NA NA 9 NA 12700 5.4 1150 6.5 0.05 2.7 NA NA 105 0.32 217 NA PZ-22 12/13/2007 4.8 1.55 13 351 NM NM NM NM NM <5 <5 <1 578 <1 10.9 NA NA <5 NA 1390 <5 NA <5 0.19 <10 NA NA 106 0.11 214 NA PZ-22 04/21/2008 5.6 1.65 14 346 NM NM NM NM NM <5 <5 <1 756 <1 10.1 NA NA <5 NA 1110 <5 1840 <5 0.16 <10 NA NA 116 0.12 222 NA PZ-22 10/13/2008 5.3 1.56 15 358 NM NM NM NM NM <5 <5 <1 722 <1 12.3 NA NA <5 NA 750 <5 1830 <5 0.17 <10 NA NA 123 0.12 238 NA PZ-22 04/14/2009 5.3 1.42 13 320 NM NM I NM NM NM <5 <5 <1 733 <1 11.9 NA NA <5 NA 1190 <5 2040 <5 1 0.12 <10 NA NA 118 <0.5 230 NA PZ-22 10/16/2009 5.5 1.48 16 345 NM NM NM NM NM <5 <5 <1 633 <1 13 NA NA <5 NA 1260 <5 1830 <5 0.23 <10 NA NA 115 <0.5 230 NA PZ-22 05/11/2010 5.5 1.47 14 306 NM NM NM NM NM <5 <5 <1 772 <1 12.7 NA NA <5 NA 1390 <5 1880 <5 0.14 <10 NA NA 107 <0.1 164 NA PZ-22 02/19/2014 5.7 1.55 9 441 0.1 109 NM 8.8 NM <1 <1 NA 798 <1 11 NA NA <5 9.13 4740 <1 2200 <5 NA <1 NA NA 170 <0.2 270 NA PZ-22 07/23/2014 5.2 2.29 19 417 0.43 255 NM 7.36 NM <1 <1 NA 1200 <1 10 NA NA <5 12 1430 <1 2400 <5 0.84 <1 16.8 NA 170 <0.2 280 NA PZ-22 05/18/2015 5.5 3.07 17 467 0.56 35 240 5.73 2 <1 <1 <1 1210 <1 8.3 NA NA <1 6.95 2300 <1 2230 1.29 NA <1 17.2 826 200 <0.2 290 <0.3 PZ-23 02/20/2014 5.4 19.98 14 298 0.4 482 NM 2.9 NM <1 2.58 NA 287 <1 8.8 NA NA <5 25.3 53 <1 3800 <5 NA <1 NA NA 91 0.22 160 NA PZ-23 05/18/2015 5.4 21.40 17 228 0.42 147 352 9.22 0 <1 <1 <1 226 <1 4.4 NA NA <1 22.4 358 <1 3640 1.43 NA <1 16.5 112 62 <0.2 120 0.389 PZ-24 02/20/2014 6.0 5.84 14 422 0.3 14 NM 7.5 NM <1 2.21 NA <50 <1 4.3 NA NA <5 2.67 45900 <1 1730 6 NA <1 NA NA 0.12 <0.2 210 NA PZ-24 05/19/2015 6.0 8.63 24 511 1.02 90 295 33.4 7 <1 1.11 <1 <50 <1 6.8 NA NA 4.49 4.35 69200 <1 2000 3.56 NA <1 5.24 202 <0.1 <0.2 260 4.25 PZ-26 02/20/2014 4.5 23.50 15 31 2.9 281 NM 8.2 NM <1 <1 NA <50 <1 1.9 NA NA <5 2.34 657 <1 40 <5 NA <1 NA NA <0.1 <0.2 <25 NA PZ-26 05/19/2015 4.8 27.08 20 42 1.94 101 306 9.44 <0.5 <1 <1 <1 <50 <1 2.8 NA NA <1 2.23 189 <1 34 <1 NA <1 2 9 0.13 <0.2 <25 <0.3 PZ-26 12/10/2015 5.0 26.50 12 41 1.7 223 428 8.88 0 <0.5 <0.5 0.35 <50 <0.08 3.7 0.093 NA <0.5 2.4 340 0.11 34 1 NA <0.5 <5 11 <1 <0.1 42 D6 <1 PZ-27 02/20/2014 7.5 32.80 16 1376 0.2 -109 NM 274 NM 10.6 1730 NA 2370 6.5 32 NA NA 30 11.5 12500 14.1 484 34 NA 3,54 NA NA 300 1.34 960 NA Still Pipe 02/18/2014 6.0 Artesian 14 1220 0.25 246 NM 0.61 NM <1 3.89 NA 1660 <1 85 NA NA <5 39.8 950 <1 10400 17 NA 1.75 NA NA 390 <0.2 870 NA Prepared by: BER Checked by: TDP/MCD Notes: 0 - Concentration exceeds the 15A NCAC 02L Standard, Appendix 2, April 1, 2013 or provisional background concentration (whichever is greater). Deg C = Degrees Celsius my = Millivolts mg/L = Milligram per liter ORP = Oxidation Reduction Potential DO = Dissolved oxygen DUP = Duplicate NA = Not analyze ug/L = Microgram per liter umhos/cm = Micro mhos per centimeter NE = Not established S.U. = Standard Unit ft = Feet Temp = Temperature Spec Cord = Specific Conductance NM = Not measured Eh = Redox Potential NTU = Nephelometric turbidity unit = NC DHHS Health Screening Level < = Concentration not detected at or above the reporting limit = Interim Maximum Allowable Concentrations (IMACs) of the 15A NCAC 02L Standard, Appendix 1, April 1, 2013. j = Indicates concentration reported below Practical Quantitation Limit (PQL), but above Method Detection Limit (MDL) and therefore concentration is estimated. B = Target analyte detected in method blank at or above the reporting limit. Target analyte concentration in sample is less than 10x the concentration in the method blank. B2 = Target analyte was detected in blank(s) at a concentration greater than 1/2 the reporting limit but less than the reporting limit. Analyte concentration in sample is valid and may be used for complicance purposes. D6 = The relative percent difference (RPD) between the sample and sample duplicate exceeded laboratory control limits. -1 = Analyte recovery in the laboratory control sample (LCS) was above QC limits. Results may be biased high. L3 = Analyte recovery in the laboratory control sample (LCS) exceeded QC limits. Analyte presence below reporting limits in associated samples. Results unaffected by high bias. M1 = Matrix spike recovery exceeded QC limits. Batch accepted based on laboratory control sample (LCS) recovery. M6 = Matrix spike and matrix spike duplicate recovery not evaluated against control limits due to sample dilution. P:\Duke Energy Progress, 1026\102. Asheville Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 4-6 Saprolite Exceedances Inc Prov BG Page 4 of 4 TABLE 4-7 TRANSITION ZONE EXCEEDANCES INCORPORATING PROVISIONAL BACKGROUND ASHEVILLE STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, ARDEN, NC Analytical Parameter PH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Boron Chloride Chromium (VI) Chromium (VI) Speciation Chromium Cobalt Iron Manganese Nickel Nitrate as N) Nitrate Selenium Sodium Strontium Sulfate Thallium Total Dissolved Solids Vanadium Reporting Units S.U. ft Deg C umhos/cm mg/L mV mV NTUs mg/L ug/L mg/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L mg-N/L mg/L ug/L mg/L ug/L mg/L ug/L mg/L ug/L SSA NCAC 02L Standard 6.5-8.5 NE NE NE NE NE NE NE NE 700 250 0.07^ 0.07^ 10 1* 300 50 100 10 10 20 NE NE 250 0.2* 500 0.3* Provisional Background 5.6-6.7 NE NE NE NE NE NE NE NE NE 2.2 NE NE 56 5.6 1895 734 16 0.59 NE NE 14 41 8.5 NE 196 0.57 Sample ID Sample Collection Date Field Parameters Analytical Results Background CB-1D 04/28/2015 6.7 38.22 17 75 1.56 1 206 7.52 <0.5 <50 1.3 NA NA 7.04 2.54 528 226 6.03 0.036 NA <1 5.63 25 2.7 <0.2 44 0.416 CB-1D 05/21/2015 6.4 38.36 16 57 0.8 48 253 2.83 0.5 <50 1.1 NA NA 1.27 1.66 589 286 2.07 0.038 NA <1 3.89 19 2.2 <0.2 37 0.34 CB-1D 09/08/2015 5.8 38.92 16 30 2.87 122 327 2.36 NM NA NA NA 0.013j NA NA NA NA NA NA NA NA NA NA NA NA NA NA CB-1D 12/08/2015 6.4 39.34 15 39 1.5 -67 138 3.26 NM <50 1.2 <0.03 NA 2.4 2.6 610 180 3.7 0.11 NA <0.5 <5 19 3.2 <0.1 67 <1 CB -ID 01/20/2016 5.8 37.24 13 31 2.12 115 320 3.67 0 <50 0.83 <0.03 NA 1.83 2.34 269 151 2.72 0.093 NA <1 1.78 14 3.2 <0.2 <25 <0.3 CB-1D 04/13/2016 5.6 34.08 15 36 3.17 91 296 4.08 NM <50 0.91 <0.03 NA <1 3.08 231 93 4.97 0.165 NA <1 2.92 17 4.6 <0.2 38 <0.3 CB-11) 1 07/08/2016 1 5.1 1 36.70 1 20 30 6.53 S 213 418 9.65 NM <SO 0.96 <0.03 NA <1 2.33 193 70 2.32 0.208 NA <1 2.48 14 2.1 <0.2 <25 <0.3 CB -ID DUP 07/08/2016 5.1 36.70 20 30 6.53 S 213 418 9.65 NM <50 7.5 <0.03 NA <1 2.03 163 68 1.85 0.206 NA <1 2.1 14 5.6 <0.2 <25 <0.3 Transition Zone ABM W-4D 03/31/2015 6.1 36.62 16 366 0.25 9 214 5.08 3 1050 12 NA NA <1 67.3 8370 6070 2.5 <0.01 NA <1 5.59 214 100 <0.2 240 0.789 ABM W-4D 05/26/2015 5.7 37.05 18 375 0.45 212 417 6.47 3.5 1080 12 NA 0.02 <1 54.2 6360 5820 2.25 0.016 NA <1 5.19 176 110 0.319 250 0.564 ABMW-4D DUP 05/26/2015 5.7 37.05 18 375 0.45 212 417 6.47 3.5 1080 13 NA NA <1 54.6 6290 5790 2.31 0.037 NA <1 5.26 179 110 0.291 240 0.451 ABMW-4D 09/08/2015 5.8 38.81 17 366 0.49 21 226 3.44 NM NA NA NA 0.021 j NA NA NA NA NA NA NA NA NA NA NA NA NA NA ABMW-4D 12/10/2015 5.6 37.51 15 365 0.2 16 221 9.31 3 1100 12.1 <0.03 NA 1.5 49.6 8200 5700 2.9 0.028 NA <0.5 5.41 180 109 0.21 214 <1 ABMW-41) DUP 12/10/2015 5.6 37.51 15 365 0.2 16 221 9.31 3 1100 12.2 <0.03 NA 1.7 49.3 7900 5600 3 0.021 NA <0.5 5.59 170 108 0.24 246 1.2 ABMW-4D 01/21/2016 5.7 35.45 15 356 0.18 47 252 8.21 2.5 1130 13 <0.03 NA 1.15 50.4 7630 5790 2.62 0.017 NA <1 5.23 181 120 <0.2 240 0.603 ABMW-5D 04/12/2015 6.2 17.07 14 291 0.49 96 301 5.57 3.5 108 9.8 NA NA <1 1.2 21100 517 1.14 1 <0.01 NA <1 10 114 15 <0.2 200 <0.3 ABMW-5D 05/26/2015 6.1 20.33 19 270 0.48 -96 109 9.39 4 106 11 NA 0.016 <1 <1 19000 369 <1 0.025 NA <1 8.01 108 16 <0.2 170 <0.3 ABMW-SD 09/01/2015 6.2 20.92 22 264 1 46 251 1.6 NM NA NA NA 0.008 B NA NA NA NA NA NA NA NA NA NA NA NA NA NA AMW-2A 07/24/2014 5.5 21.82 18 297 0.24 80 NM 2.95 NM 296 8.4 NA NA <5 19 8200 1790 <5 0.04 0.18 1.54 16.5 NA 87 <0.2 190 NA AMW-2A 05/19/2015 5.7 22.12 18 296 0.54 -34 171 9.4 <0.5 225 8.2 NA NA <1 21.2 16800 2950 1.35 0.04 NA <1 13.9 236 65 <0.2 190 <0.3 AMW-2A 12/09/2015 5.3 21.42 16 152 0.8 136 341 8.95 1.5 70 5.4 1 <0.03 NA <0.5 12.9 1 5400 1600 4.9 0.36 1 NA <0.5 9.77 82 40 0.11 113 <1 AMW-2A 01/19/2016 5.8 21.20 10 221 1 0.23 113 1 318 5.27 1 3.5 132 7.7 <0.03 NA <1 20.5 25700 3110 2.21 0.018 NA <1 9.34 174 51 <0.2 140 <0.3 CB-3 11/18/2010 NM 22.81 13 279 NM NM NM 0.71 NM 389 13.3 NA NA <5 NA 3490 159 <5 NA 0.36 <10 NA NA 114 0.31 187 NA CB-3 04/12/2011 5.7 22.30 16 344 0.14 -106 99 0.35 NM 356 12.8 NA NA <5 NA 1260 142 <5 NA 0.5 <10 NA NA 108 0.41 130 NA CB-3 07/14/2011 5.7 22.25 18 370 0.3 -25 180 0.55 NM 351 13.6 B NA NA <5 NA 879 146 <5 NA 0.43 <10 NA NA 114 0.4 165 B NA CB-3 11/09/2011 5.9 22.26 14 406 0.49 -121 84 1.5 NM 423 13.2 NA NA <5 NA 796 155 <5 NA <0.2 <10 NA NA 168 0.38 440 NA CB-3 04/10/2012 5.8 22.40 18 473 0.4 -53 152 1.36 NM 615 13.9 NA NA <5 NA 774 179 <5 NA 0.42 <10 NA NA 142 0.48 287 NA CB-3 07/16/2012 5.8 22.02 21 530 0.65 107 312 0.67 NM 895 13.9 NA NA <5 NA 1 384 178 <5 NA 0.21 <10 NA NA 194 0.45 293 NA CB-3 DUP 07/16/2012 5.8 22.02 1 21 530 1 0.65 107 1 312 0.67 1 NM 900 13.6 NA NA <5 NA 331 178 <5 NA 0.23 <10 NA NA 196 0.43 300 NA CB-3 05/19/2015 5.8 31.24 18 439 0.4 229 434 40.8 <0.5 947 8.8 NA NA <1 1.88 844 331 1.84 0.465 NA 3.03 13.1 584 150 0.398 240 0.675 CB-3R 11/14/2012 5.2 26.11 16 488 0.66 190 395 4.05 NM 1290 13 NA NA <5 NA 190 366 <5 NA 1 <10 NA NA 170 0.32 324 NA CB-3R 04/03/2013 5.4 26.14 17 415 0.58 87 292 7.8 NM 704 11 NA NA <5 NA 10100 231 <5 NA 0.4 2.15 NA NA 170 <0.2 300 NA CB-3R 07/01/2013 5.4 26.58 18 449 0.42 -61 144 0.77 NM 858 10 NA NA <5 NA 4060 296 <5 NA 0.71 4.41 NA NA 160 0.239 300 NA CB-3R 11/06/2013 5.5 30.05 16 391 0.4 98 303 3.2 NM 603 11 NA NA <5 NA 17700 1 188 <5 1 NA <0.023 <1 NA NA 1 160 <0.2 1 270 NA CB-3R 04/16/2014 5.3 30.96 18 416 0.1 317 522 3.9 NM 702 11 NA NA <5 NA 4060 512 <5 NA 4 1.81 NA NA 160 <0.2 290 NA CB-3R 07/09/2014 5.2 31.84 1 19 540 1 0.25 279 484 9.6 1 NM 805 11 NA NA <5 NA 766 1130 13 NA 21 2.69 NA NA 150 0.216 360 NA CB-3R 07/23/2014 4.9 31.92 20 594 0.29 296 NM 7.82 NM 805 11 NA NA <5 27 766 1160 0.013 21 92 2.69 NA NA 150 0.216 360 1 NA CB-3R 11/03/2014 5.5 33.00 19 489 0.17 185 390 11.2 NM 589 12 NA NA 13 NA 4570 593 33 NA 8.6 <1 NA NA 160 <0.2 300 NA CB-3R 04/08/2015 5.0 35.46 16 541 0.7 102 307 49.7 NM 571 11 NA NA 20 17.1 6240 510 49 NA 3.2 <1 18.6 NA 180 <0.2 310 NA CB-3R 07/08/2015 4.5 35.33 18 644 1.75 152 357 5.97 NM 720 10 NA NA <5 29.9 2980 754 52 23 110 1.78 17.7 733 180 0.257 420 2.7 CB-3R 11/04/2015 5.0 35.61 17 537 3.97 138 343 31.4 NM 594 11 NA NA 12 30.8 9040 1 651 67 13 60 1.5 18.5 B2 637 180 <0.2 320 2.14 CB-3R 04/05/2016 4.8 30.51 17 616 0.38 304 509 9.87 NM 742 7.3 NA NA <5 1 15.7 1090 818 7 45 200 3.34 16.6 820 95 0.379 420 <0.3 CB-3R 07/06/2016 4.9 35.39 1 22 517 1 2.49 381 586 9.29 NM 760 6.7 NA NA <5 21.1 697 586 35 21 92 B2 3.58 16.2 723 140 0.321 370 0.428 CB-8 11/18/2010 NM 50.33 14 907 NM NM NM 0.92 NM 972 299 NA NA <5 NA 64.6 579 <5 NA 1.6 25 NA NA 108 <0.1 645 NA CB-8 04/12/2011 5.0 48.60 16 1135 2.89 -79 126 9.23 NM 1130 319 NA NA 11 NA 815 683 7.7 NA 1.8 24.2 NA NA 119 <0.1 617 NA CB-8 07/15/2011 5.1 48.84 18 1102 3.01 -21 184 6.95 NM 1060 271 NA NA 30.8 NA 370 696 41 B NA 1.4 21.2 NA NA 100 <0.1 700 NA CB-8 11/08/2011 5.1 51.53 17 1180 2.87 -83 122 2.67 NM 1360 295 NA NA 5.2 NA 145 786 1<5 NA 1.7 25.1 NA NA 96.3 <0.1 764 NA CB-8 04/11/2012 5.1 49.75 15 824 3.04 -64 141 5.29 NM 1080 212 NA NA <5 NA 93.9 709 <5 NA 1.5 19.2 NA NA 113 <0.1 581 NA CB-8 07/17/2012 5.0 40.04 15 682 3.25 552 757 0.38 1 NM 841 162 NA NA <5 NA <50 552 <5 NA 1.9 15.2 NA NA 63.4 <0.1 407 NA CB-8 11/15/2012 5.0 45.68 1 15 885 1 2.37 362 567 7.24 NM 1140 220 NA NA <5 NA 80.6 652 <5 NA 1.8 13 NA NA 97.4 <0.1 516 NA CB-8 04/04/2013 5.0 45.40 15 876 2.54 99 304 4.35 NM 1090 170 NA NA <5 NA 63 679 <5 NA 1.6 18.1 NA NA 90 <0.2 730 NA CB-8 DUP 04/04/2013 5.0 45.40 15 876 2.54 99 304 4.35 NM 1130 170 NA NA <5 NA 97 695 <5 NA 1.6 18 NA NA 89 <0.2 740 NA CB-8 07/02/2013 5.5 44.44 15 719 2.9 20 225 1.77 NM 1060 140 NA NA <5 NA 73 647 <5 NA 1.6 16.5 NA NA 81 <0.2 600 NA CB-8 11/06/2013 5.1 45.46 15 747 2.4 456 661 5.6 NM 1230 160 NA NA <5 NA 225 764 <5 NA 2.1 17.5 NA NA 85 <0.2 490 NA CB-8 DUP 11/06/2013 5.1 45.46 15 747 2.4 456 661 5.6 NM 1230 160 NA NA <S NA 180 765 <5 NA 2.1 17 NA NA 85 <0.2 490 NA CB-8 04/17/2014 5.2 46.92 15 850 1.9 365 570 4 NM 1570 190 NA NA <5 NA 115 857 <5 NA 2 18.6 NA NA 92 <0.2 610 NA CB-8 07/10/2014 5.0 46.92 16 847 2 372 577 3.3 NM 1700 190 NA NA <5 NA 187 904 <5 NA 2 18.1 NA NA 97 <0.2 820 NA P:\Duke Energy Progress.1026\102. Asheville Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 4-7 Transition Zone Exceedances Inc Prov BG Page 1 of 3 TABLE 4-7 TRANSITION ZONE EXCEEDANCES INCORPORATING PROVISIONAL BACKGROUND ASHEVILLE STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, ARDEN, NC Analytical Parameter PH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Boron Chloride Chromium (VI) Chromium (VI) Speciation Chromium Cobalt Iron Manganese Nickel Nitrate as N) Nitrate Selenium Sodium Strontium Sulfate Thallium Total Dissolved Solids Vanadium Reporting Units S.U. ft Deg C umhos/cm mg/L mV mV NTUs mg/L ug/L mg/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L mg-N/L mg/L ug/L mg/L ug/L mg/L ug/L mg/L ug/L SSA NCAC 02L Standard 6.5-8.5 NE NE NE NE NE NE NE NE 700 250 0.07^ 0.07^ 10 1* 300 50 100 10 10 20 NE NE 250 0.2* 500 0.3* Provisional Background 5.6-6.7 NE NE NE NE NE NE NE NE NE 2.2 NE NE 56 5.6 1895 734 16 0.59 NE NE 14 41 8.5 NE 196 0.57 Sample ID Sample Collection Date Field Parameters Analytical Results CB-8 DUP 07/10/2014 5.0 46.92 16 847 2 372 577 3.3 NM 1670 190 NA NA <5 NA 134 889 <5 NA 2 18.4 NA NA 97 <0.2 820 NA CB-8 11/03/2014 5.1 49.40 16 884 1.07 502 707 2.26 NM 1860 210 NA NA <5 NA 63 968 <5 NA 1.8 20.3 NA NA 110 <0.2 750 NA CB-8 04/07/2015 5.1 50.29 16 1021 1.49 122 327 2.16 NM 2350 220 NA NA <5 2.54 63 1120 <5 NA 1.9 18.6 8.58 NA 120 <0.2 710 NA CB-8 DUP 04/07/2015 5.1 50.29 16 1021 1.49 122 327 2.16 NM 2330 220 NA NA <5 2.76 76 1130 <5 NA 1.9 20.1 8.5 NA 120 <0.2 730 NA CB-8 07/06/2015 5.1 49.45 16 964 1.94 297 502 2.35 NM 2310 220 NA NA <5 2.68 46 1080 <5 1.8 7.7 19.5 8.06 655 140 <0.2 840 <0.3 CB-8 DUP 07/06/2015 5.1 49.45 16 964 1.94 297 502 2.35 NM 2320 220 NA NA <5 2.71 39 1080 <5 1.8 7.8 18.9 8.09 NA 140 <0.2 860 <0.3 CB-8 11/02/2015 5.5 50.93 16 991 1 1.7 479 1 684 1.3 NM 2640 220 NA NA <5 2.98 139 1160 <5 1.7 7.5 20.1 8.77 718 110 <0.2 930 0.379 CB-8 12/08/2015 5.3 49.32 14 947 1.35 226 431 1.6 0 2500 221 0.39 NA 0.94 B 3.5 <50 1 1100 3.1 1.9 NA 21 7.33 650 115 <0.1 652 <1 CB-8 01/20/2016 5.3 46.90 11 886 3.3 456 661 1.1 0 2300 200 0.27 NA <1 4.23 16 1200 2.39 1.6 NA 15.4 7.14 567 120 <0.2 580 <0.3 CB-8 04/06/2016 5.2 44.92 15 771 1.65 519 724 1.31 NM 2130 170 NA NA <5 3.59 48 1060 <5 1.9 8.5 13.7 6.79 489 110 <0.2 550 <0.3 CB-8 07/06/2016 5.1 46.42 20 743 1.55 387 592 2.83 NM 2200 150 NA NA <5 2.7 31 865 <5 2.3 10 B2 14.1 7.11 458 110 <0.2 560 0.354 GW-11) 05/07/2015 5.4 20.66 19 63 0.38 75 280 7.3 <0.5 <50 5 NA NA <1 7.77 951 369 2.5 0.524 NA <1 2.73 33 2.3 <0.2 35 0.451 GW-ID 05/28/2015 5.3 20.59 17 55 0.42 63 268 5.53 <0.5 <50 5.3 NA 0.046 <1 1 4.02 295 240 1.44 0.542 NA <1 2.52 29 2.9 <0.2 41 <0.3 GW-1D 09/02/2015 5.2 20.67 21 56 1 0.89 283 1 488 3.92 1 NM NA NA NA 0.042 B NA NA NA NA NA NA NA NA NA NA NA NA NA NA GW-1D 12/09/2015 5.3 20.19 16 37 2.3 208 413 0.12 NM <50 3.2 0.072 NA <0.5 1.7 1 72 72 1.3 1 0.74 NA <0.5 <5 24 1.3 <0.1 <25 <1 L3 GW-ID 01/18/2016 5.3 20.29 15 43 1.9 178 383 3.55 0 <50 4.2 0.091 NA <1 1.62 221 97 1.1 0.646 NA <1 2.09 25 1.4 <0.2 32 0.339 GW-4 12/14/2007 5.3 15.96 21 327 NM NM NM NM NM 528 10.7 NA NA 8.7 NA 3230 NA 11.4 NA 0.55 <10 NA NA 100 0.16 206 NA GW-4 04/21/2008 5.9 15.49 14 295 NM NM NM NM NM 586 9.8 NA NA 6.8 NA 231 143 9.9 NA 0.37 <10 NA NA 101 <0.1 182 NA GW-4 10/13/2008 5.4 16.04 16 327 NM NM NM NM NM 592 11.6 NA NA 5.3 NA 152 153 11.1 NA 0.51 <10 NA NA 116 0.10 226 NA GW-4 04/14/2009 5.5 15.35 15 306 NM NM NM NM NM 580 11.3 NA NA 5.6 NA 486 170 11.4 NA 0.49 <10 NA NA 112 <0.5 232 NA GW-4 10/16/2009 5.6 15.48 1 15 328 1 NM NM NM NM NM 563 13.1 NA NA 5.3 NA 233 176 10.5 NA 0.59 <10 NA NA 112 <0.5 228 NA GW-4 05/11/2010 5.7 15.48 14 287 NM NM NM NM NM 541 12.5 NA NA 7.6 NA 2710 216 8.6 NA 0.46 <10 NA NA 149 0.12 148 NA GW-4 02/19/2014 5.5 20.04 15 423 1.1 371 NM 8.9 NM 915 12 NA NA 7 1.56 422 369 16 NA NA 1.23 NA NA 160 0.24 270 NA GW-4 05/18/2015 5.5 23.26 18 390 1.09 83 288 7.15 <0.5 994 10 NA NA 4.93 <1 67 185 10.9 0.599 NA <1 15.1 170 150 <0.2 260 0.328 GW-5 12/14/2007 5.6 25.85 23 410 NM NM NM NM NM 413 11.9 NA NA 5.4 NA 3740 NA 5.2 NA 0.4 <10 NA NA 125 0.27 270 NA GW-5 04/21/2008 5.1 25.78 19 379 NM NM NM NM NM 398 11.9 NA NA 44.6 NA 46200 971 30.6 NA 1.2 13.9 NA NA 117 0.65 242 NA GW-5 10/13/2008 5.5 25.63 17 378 NM NM NM NM NM 407 14.9 NA NA <5 NA 182 189 <5 1 NA 1.2 <10 NA NA 1 120 0.28 1 246 NA GW-5 04/14/2009 5.5 25.80 1 19 320 1 NM NM NM NM NM 387 13.4 NA NA <5 NA 648 192 <5 NA 1.5 <10 NA NA 116 <0.5 248 NA GW-5 10/16/2009 5.6 25.66 17 361 NM NM NM NM NM 341 14 NA NA <5 NA 3090 189 <5 NA 1.3 <10 NA NA 105 <0.5 242 NA GW-5 05/11/2010 5.7 25.73 16 316 NM NM NM NM NM 351 12.3 NA NA <5 NA 1350 170 <5 NA 1.5 <10 NA NA 142 0.33 156 NA GW-5 02/20/2014 5.6 30.10 18 483 0.2 195 NM 71.3 NM 1100 11 NA NA 38 8.37 15600 363 21 NA NA 2.94 NA NA 200 0.75 280 NA VW -ID 05/11/2015 5.3 28.94 20 68 2.02 87 292 1.35 <0.5 <50 2.7 NA NA <1 15.4 107 248 7.67 1.4 NA <1 3.46 31 5.9 <0.2 47 <0.3 VW-1D 05/21/2015 5.5 29.02 18 71 0.65 62 267 3.54 0.5 <50 2.9 NA NA <1 9.45 360 221 4.78 1.2 NA <1 3.32 31 5.3 <0.2 41 <0.3 MW-ID 12/09/2015 5.3 28.43 10 53 1.1 205 410 1.78 0 <50 3.4 <0.03 NA <0.5 3 <50 45 2.8 1 1.3 NA <0.5 <5 31 1 2.6 <0.1 32 <1 L3 MW-1D 01/18/2016 5.5 27.07 4 56 1.6 102 1 307 2.1 0 <50 3.6 <0.03 NA <1 2.47 71 39 2.56 1.3 NA <1 2.69 28 3.5 <0.2 37 <0.3 MW-31) 05/07/2015 6.3 38.88 16 394 0.82 -13 192 35.9 4 531 10 NA NA 194 3.88 12000 633 135 0.039 NA <1 20.5 265 140 <0.2 250 1.75 MW-3D 05/21/2015 6.0 39.44 20 385 0.33 89 294 4.76 5.5 469 11 NA NA <1 <1 12700 560 3.89 0.029 NA <1 20.6 250 140 <0.2 270 <0.3 MW-3D 12/09/2015 5.4 36.77 17 555 0.45 110 315 4.93 3 470 11.6 <0.03 NA 0.72 47 22400 1000 101 0.04 NA <0.5 21.2 450 264 0.15 451 <1 L3 VW-3D 01/20/2016 4.6 33.77 10 444 0.49 49 254 9.74 1.25 639 10 <0.03 NA 1.2 85.2 1540 2620 47.3 16 NA 5.01 17.6 583 190 0.802 310 <0.3 VW-4D 04/28/2015 5.5 8.35 13 54 6.4 83 288 5.19 <0.5 <50 2.9 NA NA <1 12.2 582 204 1 1.48 1.7 NA <1 2.6 31 1.8 <0.2 35 0.379 MW-4D 05/21/2015 5.1 9.65 16 46 5.04 167 372 2.62 <0.5 <50 3.1 NA NA I<1 5.28 34 87 1.07 1.6 NA <1 2.49 27 1.5 <0.2 33 <0.3 MW-5D 05/07/2015 5.5 17.95 14 401 4.74 64 1 269 0.89 2.5 505 9 NA NA <1 48 10100 557 29.5 1.5 NA 3.41 24.8 252 150 <0.2 250 <0.3 VW-5D DUP 05/07/2015 5.5 17.95 14 401 4.74 64 269 0.89 2.5 505 9 NA NA <1 49.9 9590 569 33 1.5 1 NA 3 24.5 254 160 <0.2 250 <0.3 VW-5D 05/27/2015 4.0 18.49 17 389 1.7 93 298 2.82 NM 518 9.2 NA 0.021 <1 39.1 484 456 26.1 1 NA 2 22.7 267 190 <0.2 250 <0.3 MW-5D 09/02/2015 3.6 20.27 16 382 1.1 296 501 0.1 NM NA NA NA <0.006 NA NA NA NA NA NA NA NA NA NA NA NA NA NA MW-5D 12/09/2015 4.2 16.50 14 1 388 0.23 247 452 2.6 2 590 9 <0.03 NA <0.5 24.8 2100 400 18.4 0.82 NA 4.1 22.3 290 152 <0.1 253 <1 L3 VW-5D 01/19/2016 4.0 16.41 10 392 1 0.4 312 517 0.47 2.5 638 9.6 <0.03 NA <1 1 24.3 2440 494 17.5 0.933 NA 3.96 21.5 305 1 190 <0.2 1 240 <0.3 MW-6D 04/15/2015 5.8 1.63 15 392 0.32 121 326 1 5.42 <0.5 1750 11 NA NA 1.25 7.47 406 5280 1.47 <0.01 NA <1 9.7 337 140 0.236 280 0.363 MW-6D 05/21/2015 5.5 4.61 18 383 0.34 428 633 1.06 <0.5 1 1680 11 NA NA <1 3.85 23 4480 1.13 0.021 NA <1 8.95 302 150 <0.2 260 <0.3 VW-9D 05/04/2015 5.8 29.20 16 2175 3.7 37 242 5.57 2.5 4420 500 NA NA <1 26.9 3300 3670 14.9 1 0.439 NA 1 32.2 22.4 1760 250 0.327 1700 0.516 MW-91) 05/21/2015 5.5 29.16 18 2175 0.39 -138 67 1.99 1.5 4620 470 NA NA <1 17.8 2170 3730 10.4 0.083 NA 14.8 31 1890 270 <0.2 1700 <0.3 VW-9D 12/09/2015 5.2 28.81 13 1980 0.22 197 402 8.9 0 5400 M1 501 <0.03 NA <0.5 8.1 680 3400 M1 5.5 0.52 NA 19.8 28.3 1900 242 <0.1 1350 <1 L3 MW-9D 01/20/2016 5.7 28.24 7 2034 0.5 142 347 0.9 0.5 5540 510 <0.03 NA I<1 7.06 278 3660 4.46 0.417 NA 20.7 30 1740 280 <0.2 1400 <0.3 MW-11D 02/12/2015 5.9 9.13 7 602 1 5.67 38 1 243 5.37 2 88 130 NA NA 1.07 4.21 1870 503 3.7 2.3 NA <1 33 383 22 <0.2 350 1.21 MW-11D 05/20/2015 5.3 8.88 18 595 3.4 91 296 4.01 1 <0.5 65 130 NA NA <1 1.11 91 159 1.11 2.4 NA <1 35.8 333 18 <0.2 380 <0.3 MW-11D 12/08/2015 5.2 8.52 13 565 3.95 250 455 4.29 0 52 147 <0.03 NA <0.5 <0.5 53 120 1<0.5 2.8 NA 0.6 42 310 16 <0.1 348 <1 MW-11D 01/18/2016 5.1 8.25 4 590 4.4 280 485 1.3 0 <50 150 0.091 NA <1 <1 196 134 <1 2.7 1 NA I <1 39.3 296 16 <0.2 300 <0.3 MW-11D 24/07/2016 5.1 9.19 14 601 4.71 279 484 1.2 NM <50 160 0.13 NA <1 <1 74 140 <1 2.4 NA <1 42.9 326 13 <0.2 380 <0.3 MW-11D 07/08/2016 5.4 10.15 1 17 620 3.56 S 369 574 2.82 0 <50 160 0.28 NA <1 <1 76 149 <1 3.1 NA <1 43.4 356 16 <0.2 440 0.354 MW-12D 03/31/2015 5.5 35.78 1 19 94 3.04 72 277 7.93 <0.5 <50 8 NA NA 3.35 1 11 1 433 480 5.9 1.4 NA <1 7.66 24 7.2 1 <0.2 56 0.388 P:\Duke Energy Progress.1026\102. Asheville Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 4-7 Transition Zone Exceedances Inc Prov BG Page 2 of 3 TABLE 4-7 TRANSITION ZONE EXCEEDANCES INCORPORATING PROVISIONAL BACKGROUND ASHEVILLE STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, ARDEN, NC Analytical Parameter PH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Boron Chloride Chromium (VI) Chromium (VI) Speciation Chromium Cobalt Iron Manganese Nickel Nitrate as N) Nitrate Selenium Sodium Strontium Sulfate Thallium Total Dissolved Solids Vanadium Reporting Units S.U. ft Deg C umhos/cm mg/L mV mV NTUs mg/L ug/L mg/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L mg-N/L mg/L ug/L mg/L ug/L mg/L ug/L mg/L ug/L SSA NCAC 02L Standard 6.5-8.5 NE NE NE NE NE NE NE NE 700 250 0.07^ 0.07^ 10 1* 300 50 100 10 10 20 NE NE 250 0.2* Soo 0.3* Provisional Background 5.6-6.7 NE NE NE NE NE NE NE NE NE 2.2 NE NE 56 5.6 1895 734 16 0.59 NE NE 14 41 8.5 NE 196 0.57 Sample ID Sample Collection Date Field Parameters Analytical Results MW-12D 05/21/2015 5.2 35.67 19 78 3.13 102 307 6.84 <0.5 <50 9.9 NA NA <1 2.15 118 155 1.27 1.4 NA <1 4.8 20 7.3 0.674 50 <0.3 MW-12D 12/09/2015 4.8 35.11 15 72 3.27 192 397 8.38 0 <50 8.6 0.1 NA 1.5 1.5 240 120 1.8 1.5 NA 0.58 <5 21 6 <0.1 44 D6 <1 Ll MW-12D 01/20/2016 5.3 34.23 7 72 3.3 268 473 6.2 0 <50 8.8 0.076 M1 NA 10.2 1.23 207 123 6.62 1.4 NA <1 3.79 21 7.1 <0.2 32 <0.3 MW-13D 02/12/2015 6.8 27.93 8 223 3.65 -11 194 7.28 <0.5 <50 4.4 NA NA <1 4.11 515 563 1.05 0.236 NA <1 4.62 92 4 <0.2 110 1.67 MW-13D 05/20/2015 6.6 29.91 18 165 0.5 -168 37 2.93 2.5 <50 4.4 NA NA <1 6.75 2780 1300 1.08 0.126 NA <1 5.17 114 1.9 <0.2 93 0.503 MW-13D 12/08/2015 9.8 29.47 15 128 0.27 -71 134 4.71 0 <50 4.1 <0.03 NA <0.5 1.2 820 290 <0.5 <0.02 NA <0.5 8.8 450 1.1 <0.1 131 <1 MW-13D 01/20/2016 6.7 27.39 9 132 0.46 -21 184 2.16 2.5 <50 4.6 <0.03 NA <1 4.69 3270 747 <1 0.053 1 NA <1 5.59 265 1.2 1 <0.2 69 <0.3 MW-15D 03/04/2015 6.2 4.85 14 132 1.53 48 253 4.33 <0.5 <50 7.3 NA NA <1 <1 202 167 <1 0.666 NA <1 6.94 108 0.67 <0.2 76 0.333 MW-15D 05/20/2015 5.7 6.90 15 94 2.78 72 277 1.83 <0.5 <50 7.7 NA NA <1 <1 109 87 <1 0.787 NA <1 6.49 99 0.29 <0.2 72 0.502 MW-15D 12/08/2015 6.4 4.84 14 118 0.61 185 390 8.35 0 <50 5.7 0.099 M1 NA <0.5 <0.5 310 93 <0.5 0.52 NA <0.5 7.58 120 <1 <0.1 81 <1 MW-15D 01/18/2016 6.3 4.42 7 114 1.5 185 390 2.5 0 <50 11 0.17 NA <1 <1 143 30 <1 0.793 NA <1 7.05 118 0.32 <0.2 75 0.736 MW-15D 04/08/2016 6.2 5.65 12 127 1.33 208 413 1.72 NM <50 19 0.15 NA <1 <1 141 25 <1 0.823 NA <1 8.19 144 0.34 <0.2 91 0.726 MW-15D 07/08/2016 5.7 7.11 17 105 2.64 S 355 560 2.27 0 <50 13 0.24 M1 NA <1 <1 1 52 16 1<1 1.2 NA <1 7.05 114 0.24 <0.2 182 0.639 MW-18D 05/04/2015 5.8 7.50 13 874 1.35 115 320 4.26 2.5 807 88 NA NA <1 7.35 3530 1530 2.87 0.102 NA <1 15.2 321 260 <0.2 620 0.523 MW-18D 05/28/2015 6.1 8.27 17 914 0.78 -126 79 5.04 2 793 94 NA NA <1 4.61 6960 2870 1.89 0.077 NA <1 12.9 298 280 <0.2 6S0 <0.3 MW-18D 12/08/2015 5.8 6.22 14 878 0.7 260 465 4.76 3.5 850 96 <0.03 NA <0.5 5.5 6100 1300 2.4 0.09 NA <0.5 14.6 270 276 <0.1 662 <1 MW-18D 01/19/2016 6.0 6.22 8 890 2.4 115 320 4.2 2 884 97 <0.03 NA <1 4.44 1840 1290 2.49 0.077 NA <1 12.1 290 300 <0.2 610 <0.3 MW-18D 04/11/2016 5.7 7.45 13 917 1.32 170 375 9.54 NM 887 97 <0.03 NA <1 4.09 1620 1260 2.6 0.037 NA <1 13.8 291 280 <0.2 620 <0.3 MW-18D 07/07/2016 5.6 8.86 17 923 0.17 S 249 454 3.61 NM 875 99 <0.03 1NA <1 3.4 3960 1290 2.24 0.082 NA <1 13.6 284 300 <0.2 660 1 <0.3 MW-21D 06/30/2015 6.2 2.77 19 301 4.6 -96 109 1.92 NM 79 21 NA <0.021 <1 1.66 4640 4560 1.25 0.199 NA 1.19 18.5 95 31 <0.2 170 <0.3 MW-21D 09/01/2015 6.4 3.95 28 11 6.9 1 224 429 1 2.12 4 95 24 NA <0.006 <1 <1 14900 2760 <1 0.022 M2 NA <1 15.8 77 24 <0.2 140 <0.3 MW-21D 12/08/2015 5.4 0.91 14 194 0.25 136 341 9.43 3 99 28.4 <0.03 NA <0.5 1.4 3000 820 1.1 0.052 NA <0.5 16.5 72 27.1 <0.1 128 <1 MW-21D 01/18/2016 5.2 0.60 9 185 0.51 152 357 8.42 1 95 29 <0.03 NA <1 1.09 2440 645 <1 0.042 NA <1 15.1 75 29 <0.2 110 <0.3 MW-21D 04/12/2016 5.1 1.99 15 185 0.75 170 375 9.05 NM 79 28 <0.03 NA <1 1.63 1980 B2 552 1.01 <0.01 NA <1 15 72 34 <0.2 130 <0.3 MW-21D 07/07/2016 5.1 3.50 21 181 0.29 S 268 473 7.26 NM 87 28 <0.03 NA <1 1.13 4030 586 <1 0.018 NA <1 15.4 73 1 31 <0.2 1 100 <0.3 MW-22D 06/30/2015 5.3 8.61 18 142 3.06 108 313 4.27 NM <50 24 NA 0.484 <1 2.5 184 132 6.1 0.286 NA <1 10.8 44 11 <0.2 90 <0.3 MW-22D 09/01/2015 5.1. 11.01 1 19 136 2.84 188 1 393 1.03 1 0 <50 26 NA 0.432 <1 1.65 34 92 5.93 0.253 NA <1 10.5 42 9.8 <0.2 75 0.354 MW-22D 12/08/2015 5.3 1.72 15 193 2.94 118 323 0.74 0 <50 49.9 0.73 NA 0.72 0.82 <50 130 7 0.51 NA <0.5 15.9 72 8.2 0.13 152 <1 MW-22D 01/18/2016 5.1 1.70 13 182 4.01 128 333 0.61 0 <50 45 0.57 NA <1 <1 39 118 6.76 0.444 NA <1 14.1 65 10 <0.2 98 <0.3 MW-22D 04/11/2016 5.1 6.85 15 163 3.52 155 360 1.11 NM <50 35 0.75 M1 NA <1 <1 62 107 5.49 0.29 NA <1 12.7 55 11 0.209 98 <0.3 MW-22D 07/07/2016 4.6 10.53 16 144 3.85 312 517 1.64 NM <50 30 0.64 M1 NA <1 <1 48 92 4.9 1 0.258 NA I <1 11.9 48 11 <0.2 90 0.342 MW-23DL 06/30/2015 7.1 5.55 19 281 0.46 -264 -59 4.97 NM <50 4 NA <0.021 <1 I<1 11200 76 <1 <0.01 NA <1 9.41 119 22 <0.2 160 <0.3 MW-23DL 09/03/2015 7.1 6.98 22 278 0.29 -133 72 3.94 4 <50 3.3 NA <0.006 <1 <1 12300 82 <1 0.01 M2 NA <1 7.12 114 15 <0.2 160 0.345 MW-23DL 12/09/2015 7.0 5.22 1 14 270 0.16 -125 1 80 8.7 1 NM <50 3.7 <0.03 NA <0.5 <0.5 12100 77 <0.5 <0.02 NA <0.5 6.5 120 16.7 <0.1 157 <1 L3 MW-23DL 01/19/2016 7.1 4.66 6 268 1 0.36 -98 107 2.52 2.5 <50 4 <0.03 NA <1 <1 11600 87 <1 0.02 NA <1 6.85 119 22 <0.2 150 <0.3 MW-23DU 06/24/2015 5.6 5.20 19 145 2.24 67 272 1.45 NM 87 7.3 NA 0.022 <1 36.9 162 865 2.76 0.435 NA <1 11 48 26 <0.2 84 <0.3 MW-23DU 09/03/2015 5.5 8.29 19 124 2.33 185 390 1.29 NM 85 6.3 NA 0.065 <1 8.35 222 507 1.5 0.32 NA <1 9.4 38 23 <0.2 83 0.303 MW-23DU 12/09/2015 5.5 7.97 15 119 3.44 134 339 6.9 0 77 7 0.12 NA <0.5 6.7 260 340 1.3 1 0.5 NA <0.5 8.61 41 20.2 <0.1 71 <1 Ll MW-23DU 01/19/2016 5.6 7.62 11 109 4.29 126 331 4.84 0 84 8 0.15 NA <1 4.57 478 301 1.17 0.454 NA <1 8.62 38 20 <0.2 67 <0.3 MW-23DU DUP 21/19/2016 5.6 7.62 11 109 4.29 126 331 4.84 0 83 8.4 0.13 NA <1 4.68 429 297 1.14 0.45 NA <1 8.56 38 20 <0.2 83 <0.3 PZ-16 02/19/2014 5.8 48.71 18 443 3.8 331 NM 24.6 NM 874 8 NA NA 42 1.99 1850 156 21 NA NA 32.8 NA NA 140 <0.2 280 NA PZ-16 05/18/2015 5.8 49.02 21 326 3.95 114 319 21.7 <0.5 684 4.9 NA NA 11.5 1.31 877 83 5.35 2.1 NA 27 9.48 237 110 <0.2 210 1.29 Notes: Q - Concentration exceeds the 15A NCAC 02L Standard, Appendix 2, April 1, 2013 or provisional background concentration (whichever is greater). Deg C = Degrees Celsius my = Millivolts mg/L = Milligram per liter ORP = Oxidation Reduction Potential DO = Dissolved oxygen DUP = Duplicate NA = Not analyzed ug/L = Microgram per liter umhos/cm = Micro mhos per centimeter NE = Not established S.U. = Standard Unit ft = Feet mg - N/L = Milligram nitrogen per liter Spec Cond = Specific Conductance NM = Not measured < = Concentration not detected at or above the reporting limit = Interim Maximum Allowable Concentrations (IMACs) of the 15A NCAC 02L Standard, Appendix 1, April 1, 2013. B = Target analyte detected in method blank at or above the reporting limit. Target analyte concentration in sample is less than 10x the concentration in the method blank. B2 = Target analyte was detected in blank(s) at a concentration greater than 1/2 the reporting limit but less than the reporting limit. Analyte concentration in sample is valid and may be used for compliance purposes. D6 = The relative percent difference (RPD) between the sample and sample duplicate exceeded laboratory control limits. j = Indicates concentration reported below Practical Quantitation Limit (PQL), but above Method Detection Limit (MDL) and therefore concentration is estimated. Ll = Analyte recovery in the laboratory control sample (LCS) was above QC limits. Results may be biased high. L3 = Analyte recovery in the laboratory control sample (LCS) exceeded QC limits. Analyte presence below reporting limits in associated samples. Results unaffected by high bias. MI = Matrix Spike Recovery exceeded QC limits. Batch accepted based on laboratory control sample (LCS) recovery. M2 = Matrix spike recovery was Low: the associated Laboratory Control Spike (LCS) was acceptable. S = Associated calibration check did not meet specified criteria. NTU = Nephelometric turbidity unit Temp = Temperature = NC DHHS Health Screening Level. Prepared by: BER Checked by: TDP/MCD P:\Duke Energy Progress. 1026\102. Asheville Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 4-7 Transition Zone Exceedances Inc Prov BG Page 3 of 3 TABLE 4-8 BEDROCK GROUNDWATER EXCEEDANCES INCORPORATING PROVISIONAL BACKGROUND ASHEVILLE STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, ARDEN, NC Analytical Parameter PH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Boron Chloride Chromium (VI) Chromium (VI) Speciation Chromium Cobalt Iron Manganese Selenium Sodium Strontium Sulfate Thallium Total Dissolved Solids Vanadium Reporting Units S.U. ft Deg C umhos/cm mg/L mV mV NTUs mg/L ug/L ug/L ug/L mg/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L mg/L ug/L mg/L ug/L mg/L ug/L 15A NCAC 02L Standard 6.5-8.5 NE NE NE NE NE NE NE NE 1* 10 700 250 0.07^ 0.07^ 10 1* 300 50 20 NE NE 250 0.2* 500 0.3* Provisional Background 6.1-8.9 NE NE NE NE NE NE NE NE NE NE NE 6.4 0.6 0.6' 20 NE 3225 548 NE 12 122 4.4 NE 151 0.68 Sample ID Sample Collection Date Field Parameters Analytical Results Background AMW-3B 07/23/2014 6.5 7.97 18 88 2.89 163 NM 10.8 NM <1 <1 <50 0.58 NA NA <5 <5 131 17 <1 7.16 NA 1.7 <0.2 92 NA AMW-3B 11/04/2014 NM NM NM NM NM NM NM NM NM <1 <1 NA NA NA NA <1 <1 258 102 <1 8.21 NA NA <0.2 NA NA AMW-3B 05/12/2015 7.7 8.27 16 83 0.84 -69 136 6.86 <0.5 <1 <1 <50 <2.5 NA NA <1 <1 47 <5 <1 6.07 60 3.3 <0.2 72 0.344 AMW-3B 12/08/2015 6.1 8.24 14 73 4.3 40 245 8.56 0 <0.5 <0.5 <50 <1 0.21 NA <0.5 <0.5 <50 <5 <0.5 5.55 59 1.6 <0.1 95 <1 AMW-3B 01/20/2016 6.5 8.09 10 71 4.42 62 267 3.26 0 <1 <1 <50 0.61 0.18 NA <1 <1 20 <5 <1 5.05 58 1.3 <0.2 47 <0.3 AMW-3B 04/12/2016 6.4 8.05 14 71 4.6 69 274 1.78 NM <1 <1 <50 0.6 0.18 NA <1 <1 <10 B2 <5 <1 5.18 56 1.1 <0.2 67 <0.3 AMW-3B 04/28/2016 6.4 8.02 16 74 5.74 220 425 1.93 NM <1 <1 <50 0.6 NA NA <1 <1 NA NA <1 NA NA 0.99 <0.2 58 NA AMW-3B 07/08/2016 5.7 8.04 18 70 5.9 S 312 517 6.6 NM <1 <1 <50 0.65 0.22 NA <1 <1 13 <5 <1 5.12 57 1.1 <0.2 67 0.385 CB-96R 0412712015 8.9 44.46 16 185 0.49 123 328 16.2 <0.5 <1 <1 <50 6.4 NA NA 8.25 <1 460 21 1.56 8.39 115 3.9 <0.2 130 3.03 CB-9BR 05/28/2015 6.5 48.57 16 135 0.36 69 274 10.8 <0.5 <1 <1 <50 6.4 NA 0.014 <1 <1 402 76 <1 4.76 98 1.8 <0.2 96 0.499 CB-9BR 09/08/2015 6.3 49.19 17 105 0.84 133 338 9.89 NM NA NA NA NA NA 0.12 NA NA NA NA NA NA NA NA NA NA NA CB-9BR 12/08/2015 6.6 47.95 14 100 0.55 65 270 7.06 NM <0.5 <0.5 L3 <50 6.1 0.092 NA 1.1 <0.5 460 46 <0.5 <5 68 1.4 <0.1 83 <1 CB-9BR 01/21/2016 6.4 47.30 10 99 0.7 63 268 8.3 0 <1 <1 <50 6.4 0.068 NA 9.08 <1 678 70 <1 3.47 71 1.2 <0.2 76 <0.3 CB-9BR 04/13/2016 6.1 46.93 15 98 0.52 57 262 8.71 NM <1 <1 <50 6.1 0.083 NA 1.3 <1 557 57 <1 3.48 65 1.5 <0.2 82 <0.3 CB-9BR 04/28/2016 6.2 47.21 15 99 0.5 197 402 8.58 NM <1 <1 <50 6.2 NA NA 1.18 <1 NA NA <1 NA NA 1.3 <0.2 66 NA CB-9BR 07/12/2016 6.1 47.58 19 91 0.65 259 464 9.1 0 <1 <1 <50 6.4 0.14 NA 1.5 <1 236 43 <1 4.27 65 1.3 <0.2 67 0.318 CB-9BR DUP 07/12/2016 6.1 47.58 19 91 0.65 259 464 9.1 0 <1 <1 <50 6.4 0.13 NA 1.85 <1 214 42 <1 3.47 65 1.3 <0.2 83 <0.3 Bedrock ABMW-5BR 04/13/2015 6.4 23.88 15 221 0.86 90 295 1.57 4 <1 <1 <50 7.9 NA NA <1 1.45 17300 128 <1 7.12 115 17 <0.2 160 <0.3 ABMW-5BR 05/27/2015 7.2 24.25 18 301 0.29 -245 -40 57.4 2 <1 <1 <50 8.7 NA 0.013 10.5 4.21 11400 157 <1 18.3 210 19 <0.2 180 <0.3 ABMW-5BR 09/01/2015 9.4 25.35 21 287 0.7 -66 139 22.2 NM NA NA NA NA NA <0.006 NA NA NA NA NA NA NA NA NA NA NA ABMW-11BR 04/14/2016 8.4 111.54 17 288 0.38 20 225 33.7 NM <1 <1 <50 3.2 <0.03 NA 87.2 2.22 3470 85 <1 19.3 104 40 <0.2 190 2.31 ABMW-11BR 07/11/2016 8.1 83.95 22 282 0.36 90 295 9.7 NM <1 <1 <50 3.4 <0.03 NA 11.1 <1 766 98 <1 16.5 102 36 0.396 170 0.69 AMW-1B 08/05/2014 7.1 41.06 17 449 0.23 -102 NM 19.4 NM <1 <1 433 9.7 NA NA <5 <5 4990 392 <1 28 NA 130 <0.2 330 NA AMW-1B DUP 08/05/2014 7.1 41.06 17 449 0.23 -102 NM 19.4 NM <1 <1 433 9.7 NA NA <5 <5 4990 396 <1 28.3 NA 130 <0.2 340 NA AMW-1B 05/19/2015 7.1 41.41 18 430 0.41 -230 -25 8.96 3 <1 <1 422 9.3 NA NA <1 <1 6660 362 <1 22.1 85 120 <0.2 280 <0.3 AMW-1B 12/09/2015 7.1 40.90 16 374 0.2 -134 71 9.77 3 <0.5 <0.5 360 9.1 <0.03 NA <0.5 <0.5 6600 360 <0.5 24.5 71 109 <0.1 273 <1 AMW-1B DUP 12/09/2015 7.1 40.90 16 374 0.2 -134 71 9.77 3 <0.5 <0.5 350 9.1 <0.03 NA <0.5 <0.5 6200 350 <0.5 24.7 70 109 <0.1 246 <1 AMW-1B 01/20/2016 7.2 40.86 14 394 0.21 -124 81 9 4.5 <1 <1 393 9.8 <0.03 M1 NA <1 <1 8110 332 <1 21.2 83 120 <0.2 250 <0.3 AMW-1B DUP 01/20/2016 7.2 40.86 14 394 0.21 -124 81 9 4.5 <1 <1 402 9.9 <0.03 NA <1 <1 7580 353 <1 22.2 83 130 <0.2 260 <0.3 CB-4B 11/18/2010 NM 23.34 13 315 NM NM NM 2.26 NM <0.5 <5 <50 7.9 NA NA <5 NA 429 35.1 <10 NA NA 100 <0.1 219 NA CB-4B 04/10/2012 6.5 22.98 15 363 0.56 -58 147 2.62 NM <0.5 <5 <50 7.1 NA NA <5 NA 338 23.1 <10 NA NA 88.8 <0.1 198 NA CB-4B 07/16/2012 7.1 23.29 20 285 2.24 -41 165 1.87 NM <0.5 <5 <50 7.1 NA NA <5 NA 643 32.8 <10 NA NA 63.2 <0.1 169 NA CB-4B 11/15/2012 7.2 23.23 13 328 0.65 -12 193 1.27 NM <0.5 <5 <50 7 NA NA <5 NA 569 31.6 <10 NA NA 54.7 <0.1 146 NA CB-4B DUP 11/15/2012 7.2 23.23 13 328 0.65 -12 193 1.27 NM <0.5 <5 <50 6.9 NA NA <5 NA 498 30.8 <10 NA NA 55.9 <0.1 147 NA CB-4B 04/03/2013 7.1 22.98 14 302 0.34 -14 191 1.54 NM <1 7.31 <50 6.2 NA NA <5 NA 483 39 <1 NA NA 61 <0.2 170 NA CB-4B 07/01/2013 6.2 23.22 17 296 1.18 -32 173 1.76 NM <1 2.7 <50 5.7 NA NA <5 NA 335 42 <1 NA NA 63 <0.2 170 NA CB-4B 11/06/2013 6.9 23.67 15 286 0.4 37 242 5.1 NM <1 5.39 <50 6.5 NA NA <5 NA 398 45 <1 NA NA 63 <0.2 170 NA CB-4B 04/16/2014 7.2 23.66 14 348 0.3 18 223 1.9 NM <1 10.2 <50 6.6 NA NA <5 NA 529 42 <1 NA NA 68 <0.2 190 NA CB-4B 04/08/2015 7.1 24.35 18 257 0.74 -7 198 2.42 NM <1 1.62 <50 6.2 NA NA <5 <1 625 43 <1 16.4 NA 62 <0.2 180 NA CB-4B 07/07/2015 6.9 24.80 19 263 4.04 174 379 3.1 NM <1 <1 <50 6.2 NA NA <5 <1 315 41 <1 19 144 70 <0.2 170 0.699 CB-4B 11/04/2015 7.0 23.93 15 564 0.41 -183 22 1.91 NM <1 <1 <50 6.9 NA NA <5 <1 638 65 <1 35.4 B2 155 120 <0.2 220 0.353 CB-4B 12/09/2015 7.3 24.08 13 484 0.29 -130 75 2.57 0.5 <0.5 1.3 <50 6.2 <0.03 NA <0.5 B <0.5 1400 60 <0.5 34.1 160 75.5 <0.1 199 <1 CB-4B 01/19/2016 7.1 23.93 8 517 0.4 -106 99 1.68 1.5 <1 <1 1 <50 6.6 <0.03 NA <1 <1 1240 67 <1 18.2 129 69 <0.2 280 <0.3 P:\Duke Energy Progress. 1026\102. Asheville Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 4-8 Bedrock Exceedances Inc Prov BG Page 1 of 4 TABLE 4-8 BEDROCK GROUNDWATER EXCEEDANCES INCORPORATING PROVISIONAL BACKGROUND ASHEVILLE STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, ARDEN, NC Analytical Parameter PH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Boron Chloride Chromium (VI) Chromium (VI) Speciation Chromium Cobalt Iron Manganese Selenium Sodium Strontium Sulfate Thallium Total Dissolved Solids Vanadium Reporting Units S.U. ft Deg C umhos/cm mg/L mV mV NTUs mg/L ug/L ug/L ug/L mg/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L mg/L ug/L mg/L ug/L mg/L ug/L 15A NCAC 02L Standard 6.5-8.5 NE NE NE NE NE NE NE NE 1* 10 700 250 0.07^ 0.07^ 10 1* 300 50 20 NE NE 250 0.2* S00 0.3* Provisional Background 6.1-8.9 1 NE NE NE NE I NE NE NE NE NE NE NE 6.4 0.6 0.6' 20 NE I 3225 S48 NE 12 122 4.4 NE 151 0.68 Sample ID Sample Collection Date Field Parameters Analytical Results CB-4B 04/05/2016 7.0 24.48 13 236 0.42 -11 195 2.18 NM <1 2.51 <50 6.5 NA NA <5 <1 723 59 <1 16.6 133 60 <0.2 140 <0.3 CB-4B 07/05/2016 7.1 25.45 23 241 0.98 51 256 4.9 NM <1 <1 <50 6.8 NA NA <5 <1 369 19 <1 15.1 128 62 <0.2 150 0.525 CB-86R 05/11/2015 6.7 48.76 16 458 4.51 44 249 5.39 <0.5 <1 <1 343 47 NA NA 3.83 <1 311 633 3.93 8.79 251 34 <0.2 290 0.678 CB-SBR 05/22/2015 6.8 48.55 15 352 1.89 -55 150 9.14 <0.5 <1 <1 171 26 NA NA <1 <1 601 473 1.4 7.74 178 31 <0.2 210 0.437 CB-8BR 12/08/2015 7.2 48.65 15 269 0.32 -37 168 3.07 0.5 <0.5 <0.5 78 14 <0.03 NA <0.5 <0.5 840 420 <0.5 8.14 150 24.8 <0.1 212 <1 CB-8BR 01/20/2016 7.1 47.03 7 275 3.6 -19 187 8.8 0.5 <1 <1 87 14 <0.03 NA <1 <1 897 452 <1 7.45 148 26 <0.2 ISO <0.3 GW-1BR 05/14/2015 7.0 23.71 19 162 2.42 57 262 4.72 1.5 <1 <1 <50 1.3 NA NA <1 <1 1780 93 <1 6.02 84 8.5 <0.2 110 0.575 GW-1BR 05/27/2015 7.8 22.67 20 171 2.13 -211 -6 11.3 <0.5 <1 <1 <50 1.5 NA 0.059 <1 <1 946 66 <1 6.25 88 8.3 <0.2 110 1.08 GW-1BR 09/01/2015 9.0 22.61 19 186 0.6 -56 149 1.5 NM NA NA NA NA NA 0.009 B NA NA NA NA NA NA NA NA NA NA NA GW-1BR 12/09/2015 8.7 22.30 15 163 0.5 -191 14 3.5 NM <0.5 1.1 <50 1.7 <0.03 NA <0.5 <0.5 1100 56 <0.5 8.33 98 3.7 <0.1 103 <1 L1 GW-1BR 01/18/2016 7.0 22.34 6 155 1 -81 124 2.43 NM <1 <1 <50 1.5 <0.03 NA <1 <1 1190 65 <1 7.28 88 5.2 <0.2 110 0.317 GW-2 12/14/2007 5.7 43.51 14 261 NM NM NM NM NM <5 8.3 322 <20 NA NA 31.1 NA 33200 NA <10 NA NA 69.1 0.10 200 NA GW-2 04/21/2008 5.4 43.26 15 266 NM NM NM NM NM <5 <5 386 17.1 NA NA <5 NA 7380 171 <10 NA NA 63.3 0.13 182 NA GW-2 10/13/2008 5.6 43.42 15 333 NM NM NM NM NM <5 <5 400 36.4 NA NA <5 NA 357 66.5 <10 NA NA 70.2 <0.1 204 NA GW-2 04/14/2009 5.5 43.36 15 361 NM NM NM NM NM <5 <5 418 55.5 NA NA <5 NA 286 90.1 <10 NA NA 66 <0.5 294 NA GW-2 10/16/2009 5.7 43.16 16 518 NM NM NM NM NM <5 <5 431 99 NA NA 7 NA 141 130 <10 NA NA 66.4 <0.5 312 NA GW-2 05/11/2010 5.4 42.90 16 620 NM NM NM NM NM <5 <5 377 151 NA NA <5 NA 460 141 <10 NA NA 70.1 <0.1 370 NA GW-2 02/18/2014 5.3 42.87 16 816 2.8 339 NM 4.32 NM <1 1 964 170 NA NA <5 6.9 56 1820 <1 NA NA 78 <0.2 600 NA GW-2 05/14/2015 5.5 42.95 18 900 2.99 77 282 6.81 <0.5 <1 1.02 1050 230 NA NA <1 11.9 115 1780 1.01 6.92 556 85 <0.2 720 <0.3 GW-2 12/10/2015 5.6 42.66 16 1012 2.7 246 451 4.49 0 <0.5 2.4 1400 222 0.072 NA 23 15.3 280 1700 2.4 <25 520 118 0.12 706 1.8 GW-2 01/20/2016 5.6 42.72 16 811 2.1 -97 108 9.98 NM <1 1.82 1720 210 0.05 M1 NA 52 11.5 472 2140 <1 6.83 675 120 <0.2 660 0.581 MW-1BR 05/11/2015 6.8 23.36 18 129 2.53 44 249 9.81 <0.5 <1 <1 <50 1.6 NA NA <1 <1 1370 64 <1 9.19 78 7.8 <0.2 110 <0.3 MW-1BR 05/21/2015 7.0 23.31 19 135 1.55 53 258 3.9 <0.5 <1 <1 <50 1.2 NA NA <1 <1 713 77 <1 6.83 75 8.2 <0.2 110 0.322 MW-1BR 12/09/2015 6.4 23.12 9 99 1 19 224 9.71 2 <0.5 <0.5 <50 1.8 <0.03 NA <0.5 <0.5 2500 73 <0.5 5.47 64 7.1 <0.1 73 <1 L3 MW-IBR 01/18/2016 6.6 22.59 5 102 1.1 -13 192 6.2 1.5 <1 <1 <50 1.7 <0.03 NA <1 <1 3020 75 <1 5.22 63 7.5 <0.2 56 <0.3 MW-2BR 04/13/2015 9.0 31.01 15 270 0.2 104 309 2.44 <0.5 <1 <1 67 5.7 NA NA 2.1 <1 95 25 <1 16.5 79 59 <0.2 200 0.372 MW-2BR 05/21/2015 8.8 31.34 15 274 0.19 67 272 2 <0.5 <1 <1 64 5.4 NA NA <1 <1 61 25 <1 16.8 75 56 <0.2 180 0.373 MW-5BR 05/04/2015 8.1 17.89 21 376 0.12 36 241 14.5 4 <1 <1 418 6.6 NA NA <1 <1 18800 172 <1 15.5 318 120 <0.2 250 0.368 MW-5BR 05/28/2015 6.9 19.23 16 422 0.29 26 231 4.6 1.5 <1 <1 454 8.4 NA NA <1 <1 27900 244 <1 18.1 328 140 0.287 260 <0.3 MW-5BR 12/09/2015 7.0 15.88 14 380 0.27 -115 90 4.85 1.5 <0.5 <0.5 390 7.7 <0.03 NA <0.5 <0.5 31500 210 <0.5 17.1 250 108 <0.1 245 <1 L1 MW-5BR 01/19/2016 7.0 15.79 10 378 0.3 -105 100 4.95 4 <1 <1 360 8.9 <0.03 NA <1 <1 29800 221 <1 16.9 211 120 <0.2 230 <0.3 MW-6BR 02/22/2016 8.9 1.50 15 197 0.54 -84 121 1.04 0 <1 <1 112 3.9 0.053 NA <1 <1 25 <5 <1 22.2 35 48 <0.2 140 <0.3 MW-9BR 05/04/2015 7.2 31.98 19 1022 4.39 -22 183 14.9 <0.5 <1 <1 490 190 NA NA <1 <1 1570 247 <1 24.7 697 86 <0.2 760 0.379 MW-9BR 05/21/2015 6.7 31.90 20 1039 3.01 -107 98 15.5 1.5 <1 <1 530 200 NA NA <1 <1 2540 317 <1 24.6 746 87 <0.2 860 <0.3 MW-9BR 12/09/2015 7.0 31.28 14 1259 0.21 -119 86 3.37 2.5 <0.5 0.84 960 313 <0.03 NA <0.5 0.76 5100 430 <0.5 32.2 1100 106 <0.1 914 <1 L3 MW-9BR 01/20/2016 7.2 30.67 5 1367 0.7 -123 82 3 2 <1 <1 1160 300 <0.03 NA <1 <1 7740 631 <1 30.9 1100 120 <0.2 890 <0.3 MW-9BR 04/25/2016 7.1 31.05 18 1492 0.23 -77 128 5.47 NM <1 <1 1570 330 NA NA <1 <1 NA NA <1 NA NA 130 <0.2 1100 NA MW-13BR 03/03/2015 6.4 28.00 11 104 4.55 8 213 8.04 <0.5 <1 <1 <50 4.6 NA NA <1 1.7 335 268 <1 2.64 31 2.1 <0.2 67 0.879 MW-13BR DUP 03/03/2015 6.4 28.00 11 104 4.55 8 213 8.04 <0.5 <1 <1 <50 4.6 NA NA <1 1.74 319 269 <1 2.68 30 2 <0.2 58 0.82 MW-13BR 05/20/2015 5.4 30.03 18 52 2.53 53 258 3.16 <0.5 <1 <1 <50 4.4 NA NA <1 <1 76 105 <1 2.23 18 1.6 <0.2 34 <0.3 MW-13BR 12/08/2015 5.8 29.57 15 43 2.95 148 353 0.78 0 <0.5 <0.5 L3 <50 4.8 <0.03 NA <0.5 0.55 <50 33 <0.5 <5 16 1.7 <0.1 52 <1 MW-13BR 01/20/2016 5.5 27.43 9 48 3.54 100 305 0.29 0 <1 <1 <50 5 0.25 NA <1 <1 22 25 <1 2.26 16 1.8 <0.2 <25 <0.3 MW-14BR 02/13/2015 7.0 16.44 8 524 4.71 9 214 2.6 <0.5 <1 <1 421 6.9 NA NA <1 <1 76 216 16.5 13.6 295 160 <0.2 350 0.528 MW-14BR 05/20/2015 6.8 13.74 16 595 1.83 65 270 3.05 <0.5 <1 <1 386 6.3 NA NA <1 <1 31 31 13.8 9.86 307 170 <0.2 390 <0.3 IL MW-14BR 12/09/2015 6.7 12.25 13 604 1.3 227 432 6.22 0 <0.5 <0.5 360 5.4 0.07 NA <0.5 <0.5 52 44 9.3 9.46 350 210 <0.1 425 <1 L3 P:\Duke Energy Progress. 1026\102. Asheville Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 4-8 Bedrock Exceedances Inc Prov BG Page 2 of 4 TABLE 4-8 BEDROCK GROUNDWATER EXCEEDANCES INCORPORATING PROVISIONAL BACKGROUND ASHEVILLE STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, ARDEN, NC Analytical Parameter PH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Boron Chloride Chromium (VI) Chromium (VI) Speciation Chromium Cobalt Iron Manganese Selenium Sodium Strontium Sulfate Thallium Total Dissolved Solids Vanadium Reporting Units S.U. ft Deg C umhos/cm mg/L mV mV NTUs mg/L ug/L ug/L ug/L mg/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L mg/L ug/L mg/L ug/L mg/L ug/L 15A NCAC 02L Standard 6.5-8.5 NE NE NE NE NE NE NE NE 1* 10 700 250 0.07^ 0.07^ 10 1* 300 50 20 NE NE 250 0.2* 500 0.3* Provisional Background 6.1-8.9 NE NE NE NE NE NE NE NE NE NE NE 6.4 0.6 0.6' 20 NE 3225 548 NE 12 122 4.4 NE 151 0.68 Sample ID Sample Collection Date Field Parameters Analytical Results MW-14BR 01/18/2016 6.9 10.52 2 598 3.3 160 365 0.8 0 <1 <1 352 6.2 0.15 NA <1 <1 57 16 9.05 8.99 282 190 <0.2 390 0.333 MW-16BR 03/11/2015 6.3 9.67 13 529 0.43 -63 142 9.7 3 <1 <1 109 120 NA NA <1 3.49 60100 852 <1 21.8 290 31 <0.2 290 <0.3 MW-16BR 05/28/2015 5.9 10.10 15 515 0.12 -165 40 4.14 2.5 <1 <1 117 120 NA NA <1 1.61 56900 715 <1 19.5 266 36 <0.2 310 <0.3 MW-16BR 12/08/2015 6.0 8.77 15 532 0.3 -13 192 2.97 3 <0.5 <0.5 L1 230 118 <0.03 NA <0.5 0.62 53900 720 <0.5 22.2 280 38.1 <0.1 345 <1 MW-16BR 01/19/2016 6.0 8.81 5 556 0.7 -37 168 1.2 2.5 <1 <1 216 130 <0.03 NA <1 <1 58200 757 <1 20.2 278 39 <0.2 310 <0.3 MW-16BR 04/08/2016 6.0 9.49 13 511 0.19 37 242 0.85 NM <1 <1 140 120 <0.03 NA <1 <1 52500 678 <1 21.1 259 35 <0.2 280 <0.3 MW-16BR 07/08/2016 6.0 10.44 16 525 0.21 S 69 274 0.9 6 <1 <1 150 120 <0.6 D3 NA <1 <1 59000 753 <1 21.8 280 41 <0.2 300 <0.3 MW-18BR 05/04/2015 5.9 7.92 16 923 1.4 123 328 5.39 <0.5 <1 <1 892 97 NA NA <1 <1 92 227 1.4 15.5 443 260 <0.2 660 0.554 MW-18BR 05/28/2015 5.7 8.45 17 900 0.81 2 207 1.95 <0.5 <1 <1 851 96 NA NA <1 1.02 125 313 <1 15.2 415 290 <0.2 660 <0.3 MW-18BR 12/08/2015 5.6 6.75 13 889 0.6 297 502 0.99 0 <0.5 <0.5 L3 900 96.4 0.065 NA <0.5 0.98 <50 200 0.59 15.5 400 278 <0.1 659 <1 MW-18BR 01/19/2016 5.8 6.70 8 913 0.5 191 396 0.9 0 <1 <1 974 99 0.056 M1 NA <1 <1 10 221 <1 14 436 290 <0.2 630 <0.3 MW-18BR 04/11/2016 5.6 7.80 14 932 0.54 147 352 0.43 NM <1 <1 906 97 0.043 NA <1 1.14 14 216 <1 14.6 413 290 <0.2 650 <0.3 MW-18BR 07/07/2016 5.6 8.90 19 903 0.42 S 349 554 1.06 NM <1 <1 927 98 <0.03 NA <1 2.1 <10 326 <1 14.3 419 300 <0.2 650 0.34 MW-22BR 06/30/2015 6.4 14.56 17 291 0.78 -130 75 5.69 NM <1 <1 <50 38 NA <0.021 <1 <1 16000 324 <1 16 121 25 <0.2 170 <0.3 MW-22BR 09/01/2015 6.5 15.97 20 294 0.51 -47 158 2.63 5.5 <1 <1 <50 36 NA <0.006 <1 <1 18800 302 <1 18.1 105 22 <0.2 150 0.347 MW-22BR 12/08/2015 6.0 12.53 14 275 0.28 5 210 0.36 3.5 <0.5 <0.5 L3 <50 49.8 <0.03 NA <0.5 <0.5 14400 250 <0.5 18.8 97 18.6 <0.1 180 <1 MW-22BR 01/18/2016 5.9 12.30 13 259 0.18 23 228 3.74 5.5 <1 <1 <50 51 <0.03 NA <1 <1 14700 262 <1 17 98 20 <0.2 140 <0.3 MW-22BR 04/11/2016 5.9 13.70 15 266 0.13 52 257 9.72 NM <1 <1 <50 49 <0.03 NA <1 <1 16900 310 <1 16 101 19 <0.2 160 <0.3 MW-22BR 07/07/2016 5.4 15.60 17 254 0.19 S 82 287 8.47 NM <1 <1 <50 48 <0.03 NA <1 <1 14500 316 <1 15.3 98 19 <0.2 150 <0.3 PZ-1D 12/14/2006 7.0 43.00 16 1 NM NM NM NM NM 10.8 <2 272 20 NA NA <2 NA 4540 1230 <2 92 NA 250 4.4 595 NA PZ-17D 12/14/2006 5.9 50.61 14 0 NM NM NM NM NM <2 <2 762 6.7 NA NA <2 NA 2750 47.9 44.6 9 NA 110 <4 267 NA PZ-17D 06/12/2007 7.3 50.51 16 403 NM NM NM NM NM <0.1 1.5 677 8.44 NA NA 0.14 NA 200 60.8 46.7 NA NA 121 0.053 305 NA PZ-17D 02/18/2014 5.8 53.04 15 518 0.35 298 NM 6.4 NM <1 <1 967 11 NA NA 8 <1 369 49 20.1 NA NA 160 <0.2 340 NA PZ-17D 05/15/2015 5.8 56.41 16 481 0.77 39 244 9.74 <0.5 <1 <1 889 9.4 NA NA 8.66 <1 450 48 22.2 11.1 315 140 <0.2 320 <0.3 PZ-17D 12/09/2015 5.6 54.94 15 439 0.65 165 370 5.59 0 <0.5 <0.5 840 8 0.084 NA 2.4 0.67 220 17 25.9 10.6 310 137 <0.1 297 <1 L1 PZ-17D 01/20/2016 6.1 54.37 11 376 0.53 -103 102 9.92 0 <1 <1 846 8.5 0.12 NA 47.5 1.19 363 31 20.3 10.1 281 150 <0.2 290 0.427 PZ-17D 04/26/2016 5.9 56.68 16 448 3.74 255 460 5.8 NM <1 <1 869 7.1 NA NA <1 4.17 NA NA 29.2 NA NA 140 <0.2 290 NA PZ-17S 12/14/2006 6.3 28.99 14 0 NM NM NM NM NM <2 <2 102 2.8 NA NA <2 NA <20 315 14.8 3.8 NA 49 <4 125 NA PZ-17S 06/12/2007 7.2 28.64 15 146 NM NM NM NM NM 0.57 0.47 66.5 3.5 NA NA <16 NA 319 139 18.3 NA NA 36.1 0.22 95 NA PZ-17S 05/15/2015 5.4 27.44 17 71 5.89 173 378 1.38 <0.5 <1 <1 <50 1.9 NA NA <1 <1 17 24 11 2.74 122 19 <0.2 44 <0.3 PZ-17S 12/09/2015 4.9 27.00 14 63 6.87 157 362 1.76 0 1 <0.5 <0.5 <50 2.1 0.12 NA <0.5 0.76 <50 20 9.9 <5 120 16.5 <0.1 42 <1 L3 PZ-17S 01/20/2016 5.7 27.14 11 53 6.3 164 369 1.82 0 <1 <1 <50 1.8 0.12 NA <1 <1 40 19 6.48 2.62 96 14 <0.2 35 <0.3 Water Supply Wells AS-4 02/06/2014 6.2 13.45 11 334 0.7 85 NM 33.3 NM NA <1 108 NA NA NA NA NA 19200 783 NA NA NA NA <0.2 NA NA AS-4 08/05/2014 4.7 NM 16 436 2.44 257 NM 29.2 NM <1 1.44 <50 80 NA NA <5 116 4110 1670 <1 34.5 NA 79 <0.2 270 NA AS-4 02/11/2016 4.5 12.97 12 454 3.82 381 586 9.83 NM <1 1.62 <50 76 <0.03 M1 NA <1 128 2450 1880 <1 39 203 84 <0.2 280 <0.3 AS-5(Duke) 02/09/2015 NM NM NM NM NM NM NM NM NM <1 <1 <50 8.1 NA NA <5 <1 87 13 <1 5.31 57 1.4 <0.2 54 <0.3 AS-5 (Vendor) 02/09/2015 5.1 NM 15 73 6.2 NM NM 1.1 NM <1 <5 <100 7.75 <10 NA <1 <1 84 12 <5 5.1 60 1.32 <0.1 44 <0.3 AS-6 02/11/2016 6.9 8.70 13 369 0.19 -153 52 22.2 NM <1 <1 79 56 <0.03 NA <1 <1 17300 491 <1 15.9 116 19 <0.2 220 <0.3 AS-9 (Duke) 02/09/2015 NM NM NM NM NM NM NM NM NM <1 <1 <50 2.5 NA NA <5 <1 <10 <5 <1 6.97 77 5.3 <0.2 93 <0.3 AS-9(Vendor) 02/09/2015 6.2 NM 16 128 4.1 NM NM <1 NM <1 <5 <100 2.17 <10 NA <1 <1 <50 <5 <5 6.4 84 4.68 <0.1 81 <0.3 AS-9 05/12/2016 6.6 NM 15 135 3.89 195 400 0.28 NM <1 <1 <50 2.3 0.077 NA <1 <1 12 <5 <1 7.83 76 4.5 <0.2 84 <0.3 AS-11(Duke) 03/04/2015 NM NM NM NM NM NM NM NM NM <1 <1 <50 55 NA NA <5 <1 <10 5 <1 72 226 330 <0.2 590 <0.3 AS-11(Vendor) 03/04/2015 8.6 NM 15 713 2 NM NM <1 NM <1 <1 <500 56 <10 NA <1 <1 <50 <5 <1 72 210 340 <1 560 <5 AS-11 (Duke) 07/31/2015 NM NM NM NM NM NM NM NM NM <1 <1 <50 52 NA NA <5 <1 59 12 <1 68.5 213 300 <0.2 570 <0.3 P:\Duke Energy Progress. 1026\102. Asheville Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 4-8 Bedrock Exceedances Inc Prov BG Page 3 of 4 TABLE 4-8 BEDROCK GROUNDWATER EXCEEDANCES INCORPORATING PROVISIONAL BACKGROUND ASHEVILLE STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, ARDEN, NC Analytical Parameter PH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Boron Chloride Chromium (VI) Chromium (VI) Speciation Chromium Cobalt Iron Manganese Selenium Sodium Strontium Sulfate Thallium Total Dissolved Solids Vanadium Reporting Units S.U. ft Deg C umhos/cm mg/L mV mV NTUs mg/L ug/L ug/L ug/L mg/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L mg/L ug/L mg/L ug/L mg/L ug/L 15A NCAC 02L Standard 6.5-8.5 NE NE NE NE NE NE NE NE 1* 10 700 250 0.07^ 0.07^ 10 1* 300 50 20 NE NE 250 0.2* 500 0.3* Provisional Background 6.1-8.9 NE NE NE NE NE NE NE NE NE NE NE 6.4 0.6 0.6' 20 NE 3225 548 NE 12 122 4.4 NE 151 0.68 Sample ID Sample Collection Date Field Parameters Analytical Results AS-11 05/09/2016 8.5 NM 17 838 1.15 17 222 0.48 NM <1 <1 54 54 <0.03 NA <1 <1 25 10 <1 64.6 232 320 <0.2 570 <0.3 AS-13 (Duke) 06/26/2015 NM NM NM NM NM NM NM NM NM <1 <1 <50 80 NA NA <5 <1 445 5 <1 75.7 359 380 <0.2 690 <0.3 AS-13 (Vendor) 06/26/2015 7.6 NM 15 990 0.03 NM NM 1.9 NM <0.5 <0.5 38.6 83.9 <0.03 NA <0.5 <0.5 108 5.1 <0.5 77.9 342 356 <0.1 696 <1 AS-13 05/09/2016 8.1 114.00 16 1042 0.44 17 222 1.06 NM <1 <1 63 85 <0.03 NA <1 <1 295 <5 <1 74.5 373 420 <0.2 710 0.47 AS-14 (Duke) 06/26/2015 NM NM NM NM NM NM NM NM NM <1 <1 333 9.7 NA NA <5 <1 18 231 <1 18 404 240 <0.2 520 <0.3 AS-14 (Vendor) 06/26/2015 7.6 NM 20 709 7.79 NM NM <1 NM <0.5 <0.5 325 10.4 <0.03 NA <0.5 <0.5 <50 240 <0.5 18.8 426 243 <0.1 526 <1 AS-14 (Duke) 12/29/2015 NM NM NM NM NM NM NM NM NM <1 <1 312 9.6 NA NA <5 <1 509 185 <1 18.9 438 240 <0.2 520 <0.3 AS-14 (Vendor) 12/29/2015 7.4 NM 15 704 1.04 NM NM 3.8 NM <0.5 <0.5 310 10.3 <0.03 NA <0.5 <0.5 568 200 <0.5 20.7 491 228 <0.1 504 <1 AS-14 05/11/2016 7.6 NM 15 713 4.63 48 253 0.16 NM <1 <1 339 9.5 <0.03 NA <1 <1 695 221 <1 19.2 480 250 <0.2 510 <0.3 AS-15 (Duke) 08/07/2015 NM NM NM NM NM NM NM NM NM <1 <1 <50 2 NA NA <5 <1 <10 13 <1 2.97 43 1.1 <0.2 44 <0.3 AS-15 (Vendor) 08/07/2015 5.7 NM 17 58 7.62 NM NM <1 NM <0.5 <0.5 <5 2.3 <0.3 NA <0.5 <0.5 <50 13.5 <0.5 3.22 44.5 2.1 <0.1 47 <1 AS-16(Vendor) 09/30/2013 NM NM NM NM NM NM NM <1 NM NA <2 <50 7.9 NA NA <10 NA <50 11 <5 7.1 NA <2 <2 54 NA AS-17 (Duke) 08/14/2015 NM NM NM NM NM NM NM NM NM <1 <1 <50 0.55 NA NA <5 <1 510 16 <1 5.59 62 6.4 <0.2 74 <0.3 AS-17 (Vendor) 08/14/2015 6.4 NM 15 77 1.06 NM NM 1.2 NM <0.5 <0.5 <5 <1 <0.03 NA <0.5 <0.5 379 14.6 <0.5 5.15 54.7 6.5 <0.1 65 <1 AS-20(Duke) 11/25/2015 NM NM NM NM NM NM NM NM NM <1 <1 149 19 NA NA <5 <1 124 42 <1 25.6 323 170 <0.2 370 <0.3 AS-20 (Vendor) 11/25/2015 7.5 NM 12 552 0.29 NM NM <1 NM <0.5 <0.5 <5 20.6 <0.03 NA <0.5 <0.5 <50 37.3 <0.5 25.1 301 420 <0.1 388 <1 AS-20 06/06/2016 7.5 79.00 15 473 4.3 67 272 6.9 NM <1 <1 108 20 <0.03 NA <1 <1 1630 33 <1 22.6 275 150 <0.2 320 <0.3 DW-6 08/05/2014 6.0 NM 16 102 8.12 129 NM 148 NM <1 <1 <50 1.4 NA NA <5 <5 4060 85 <1 7.83 NA 0.25 <0.2 90 NA DW-6 02/11/2016 6.6 6.92 13 161 0.28 -94 111 71 NM <1 <1 <50 1.6 1 <1.5 NA <1 <1 28000 607 <1 7.71 94 0.46 <0.2 68 <0.3 Prepared by: BER Checked by: TDP/MCD Notes: = - Concentration exceeds the 15A NCAC 02L Standard, Appendix 2, April 1, 2013 or provisional background concentration (whichever is greater) Spec Cord = Specific Conductance Deg C = Degrees Celsius NTU = Nephelometric turbidity unit DUP = Duplicate umhos/cm = Micro mhos per centimeter NE = Not established S.U. = Standard Unit mg/L = Milligram per liter DO = Dissolved oxygen ft = Feet mV = Millivolts ORP = Oxidation Reduction Potential NA = Not analyzed ug/L = Microgram per liter = NC DHHS Health Screening Level NM = Not measured Temp = Temperature Eh = Redox Potential < = Concentration not detected at or above the reporting limit = Interim Maximum Allowable Concentrations (IMACs) of the 15A NCAC 02L Standard, Appendix 1, April 1, 2013. B = Target analyte detected in method blank at or above the reporting limit. Target analyte concentration in sample is less than 10x the concentration in the method blank. B2 = Target analyte was detected in blank(s) at a concentration greater than 1/2 the reporting limit but less than the reporting limit. Analyte concentration in sample is valid and may be used for compliance purposes. D3 = Sample was diluted due to the presence of high levels of non -target analytes or other matrix interference. Ll = Analyte recovery in the laboratory control sample (LCS) was above QC limits. Results may be biased high. L3 = Analyte recovery in the laboratory control sample (LCS) exceeded QC limits. Analyte presence below reporting limits in associated samples. Results unaffected by high bias. M1 = Matrix spike recovery exceeded QC limits. Batch accepted based on laboratory control sample (LCS) recovery. S = Associated calibration check did not meet specified criteria. = Chromium (VI)speciation samples were analyzed using IC-ICP-DRC-MS method as opposed to ICP-MS method and were not analyzed in background wells. Chromium (VI) PBC is based on background samples analyzed using ICP-MS method. Therefore, Chromium (VI) PBC is used for comparison only to speciation analytical results. Data not used in provisional background concentration determinations. P:\Duke Energy Progress. 1026\102. Asheville Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 4-8 Bedrock Exceedances Inc Prov BG Page 4 of 4 SynTerra “Predicted Post- Closure Groundwater Elevation” Figure NOTES: 1 APRIL 17, 2014 AERIAL ORTHOPHOTOGRAPHY OBTAINED FROM WSP. 2 2013 AERIAL ORTHOPHOTOGRAPHY OBTAINED FROM THE NC CENTER FORGEOGRAPHIC INFORMATION AND ANALYSIS. (http://services.nconemap.gov/) 3 PARCEL BOUNDARY WAS OBTAINED FROM THE NC CENTER FOR GEOGRAPHICINFORMATION AND ANALYSIS. (http://services.nc onemap.gov/) 4 DRAWING HAS BEEN SET WITH A PROJ ECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011). SR-3656 SR-3527 S R -3 5 5 0 S R - 3 5 9 6 S R -3 5 2 3 S R -3 5 2 4 NC-146 I- 2 6 I- 2 6 SR-3551 S R -3 5 5 2 S R -3 6 5 7 S R -3 6 1 8 SR-3486 S R -3 5 2 1 S R -3 5 9 7 S R - 3 5 2 2 R M P - 4 8 8 6 R M P - 4 8 8 9 SR-3564 S R -3 4 9 5 S R -3 4 9 8 SR-3553 1982 ASHBASIN 1964 ASHBASIN F R E N C H B R O A D R I V E R LAKEJULIAN HOT P O N D S E T T L I N G P O N D W.E.BASINS PREDICTED POST-CLOSUREGROUNDWATER ELEVATIONASHEVILLE STEAM ELECTRIC PLANTARDEN, NORTH CAROLINA LEGEND PREDICTED POST-CLOSURE GROUNDWATER LEVELELEVATION CONTOUR ASH BASIN BOUNDARY ASH BASIN COMPLIANCE BOUNDARY DUKE ENERGY PROGRESS ASHEVILLE PLANT SITE BOUNDARY DITCH STREAM ± P :\D U K E E N E R G Y P R O G R E S S .1 0 2 6 \0 0 G I S B A S E D A T A \A S H E V I L L E \M A P _D O C S \C A P _2 _D R A F T \P R E D I C T E D P O S T C L O S U R E G W E L E V .M X D PROJECT MANA GER: T. PL ATING DRAWN BY: A. FEIGL DATE: 12/1 3/201 6DATE: 12/1 3/201 6 148 R IVER ST REET, SU ITE 220,GR EENVILLE, SC 29601864-421-9999www.synterracorp.com ASH EVILLE STEAM ELECTR IC PLAN T200 C P & L D RIVEARDEN, NOR TH C AR OLIN A GRAPHIC SCALE CHECKED BY: T. PLATING 800 0 800 1,600 IN FEET 2 0 3 0 2 0 4 0 2050 2060 2070 2080 2090 2100 2110 2120 2 1 3 0 2 1 4 0 2 1 5 0 2 1 6 0 2 1 7 0 2 0 4 0 2 0 5 0 2 0 6 0 2 0 7 0 2 0 8 0 2 0 9 0 2 1 0 0 2 11 0 2120 2130 2 1 4 0 2150 2 1 6 0 2 1 7 0 2 0 3 0 2 0 4 02 0 5 0 2 0 6 0 2 0 7 0 2 0 8 0 2 0 9 0 2100 2110 2120 2130 2 1 4 0 2150 2160 2 11 0