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HomeMy WebLinkAboutNC0003417_Lee Tables_20160916TABLE 1-1 WELL CONSTRUCTION AND STAFF GAUGE DATA H.F. LEE ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, GOLDSBORO, NC Monitoring Well ID Program Monitoring Zone Date Installed Material Diameter (inches) Surface Casing (Feet-BGS) Latitude Longitude Measuring Point TOC Elevation (Feet- MSL) Ground Surface Elevation (Feet- MSL) Total Well Depth (Feet-BGS) Measured Well Depth (Feet BTOC) Screened Interval (Feet-BGS) Inactive Basins BW-1 NPDES Surficial 09/13/11 PVC 2 NA 35.38292 78.10864 86.99 NM 13 16.06 3-13 CW-1 NPDES Surficial 09/13/11 PVC 2 NA 35.37341 78.10290 72.93 NM 20.5 23.70 5.5-20.5 CW-2 NPDES Surficial 09/13/11 PVC 2 NA 35.37652 78.10243 73.86 NM 20.6 23.72 5.6-20.6 CW-3 NPDES Surficial 09/13/11 PVC 2 NA 35.37861 78.10169 75 NM 20.3 23.77 5.3-20.3 CW-4 NPDES Surficial 10/04/11 PVC 2 NA 35.38066 78.09953 76.22 NM 26.3 29.09 11-26 DMW-3 CAMA Cape Fear 08/29/13 PVC 2 0-30 35.37868 78.10163 71.85 69.2 40 42 30-40 IABMW-01 CAMA Ash 03/30/15 PVC 2 NA 35.38085 78.10770 81.76 78.68 8.5 11.8 3.5-8.5 IABMW-01S CAMA Surficial 03/30/15 PVC 2 NA 35.38086 78.10772 81.57 78.54 26 27.5 16-26 IABMW-02 CAMA Ash 03/28/15 PVC 2 NA 35.37991 78.10372 81.88 78.75 3 NM 1.5-3.0 IABMW-02S CAMA Surficial 03/28/15 PVC 2 NA 35.37986 78.10368 81.99 78.71 20 23.19 10-20 IABMW-03 CAMA Ash 03/29/15 PVC 2 NA 35.37354 78.10562 80.76 77.98 5 7.68 2.5-5.0 IABMW-03S CAMA Surficial 03/29/15 PVC 2 NA 35.37354 78.10565 81.19 78.34 20 23.23 10-20 IMW-01S CAMA Surficial 05/05/15 PVC 2 NA 35.38107 78.11319 76.43 72.94 15 18.11 10-15 IMW-01BC CAMA Cape Fear 05/04/15 PVC 2 0-20 35.38105 78.11315 82.87 79.5 40 43.33 35-40 IMW-02BC CAMA Cape Fear 03/26/15 PVC 2 0-10 35.38224 78.11081 77.39 74.77 82.5 84.7 77.5-82.5 IMW-03S CAMA Surficial 05/12/15 PVC 2 NA 35.38498 78.10619 78.25 78.49 19 18.97 14-19 IMW-03BC CAMA Cape Fear 05/12/15 PVC 2 0-15 35.38498 78.10622 78.45 78.72 34 34.35 29-34 IMW-04S CAMA Surficial 07/21/16 PVC 2 NA 35.37244 78.11014 76.46 73.62 17.6 20.64 7.6-17.6 IMW-04BC CAMA Cape Fear 07/20/16 PVC 2 0-21 35.37246 78.11012 77.34 74.50 33 36.95 23-33 IMW-05S CAMA Surficial 06/30/16 PVC 2 NA 35.37249 78.10452 79.19 76.21 25 28.72 15-25 IMW-05BC CAMA Cape Fear 06/29/16 PVC 2 0-34 35.37248 78.10453 79.57 76.48 55 57.7 45-55 PZ-4 CAMA Surficial 09/04/13 PVC 1 NA 35.37957 78.10549 82.2 78.5 20 23.60 10-20 PZ-5 CAMA Surficial 09/03/13 PVC 1 NA 35.38148 78.10182 81.46 79.2 17 20.00 7-17 PZ-6 NON PROGRAM Surficial 08/29/13 PVC 1 NA 35.37343 78.10656 NM 77.98 19.5 NM 9.5-19.5 SMW-3 CAMA Surficial 08/28/13 PVC 2 NA 35.38274 78.10168 76.93 74.28 15 17.94 5-15 SMW-4 CAMA Surficial 08/30/13 PVC 2 NA 35.37567 78.10988 76.8 74.2 15 17.65 5-15 SMW-5 CAMA Surficial 08/30/13 PVC 2 NA 35.37257 78.10810 NM 76.22 15 NM 5-15 Inactive Basin Staff Guages SG-01 CAMA Surface Water 08/08/16 NA NA NA 35.38160 78.11200 72.55 NA NA NA NA SG-02 CAMA Surface Water 08/08/16 NA NA NA 35.38308 78.10896 71.90 NA NA NA NA SG-03 CAMA Surface Water 08/08/16 NA NA NA 35.38311 78.10467 76.12 NA NA NA NA P:\Duke Energy Progress.1026\104. Lee Ash Basin GW Assessment\19.EG_CSASUP\tables\Table 1-1 Well Construction and Staff Gauge Data.xlsx Page 1 of 3 TABLE 1-1 WELL CONSTRUCTION AND STAFF GAUGE DATA H.F. LEE ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, GOLDSBORO, NC Monitoring Well ID Program Monitoring Zone Date Installed Material Diameter (inches) Surface Casing (Feet-BGS) Latitude Longitude Measuring Point TOC Elevation (Feet- MSL) Ground Surface Elevation (Feet- MSL) Total Well Depth (Feet-BGS) Measured Well Depth (Feet BTOC) Screened Interval (Feet-BGS) Active Basin ABMW-01 CAMA Ash 03/17/15 PVC 2 NA 35.38331 78.07792 103.02 99.93 24.5 25.89 19.5-24.5 ABMW-01S CAMA Surficial 03/13/15 PVC 2 NA 35.38328 78.07799 102.68 100.14 46.5 49.28 36.5-46.5 AMW-04BC CAMA Surficial 04/11/15 PVC 2 0-15 35.38224 78.08189 72.97 70.02 22.5 25.26 17.5-22.5 AMW-06RBC CAMA Black Creek 05/01/15 PVC 2 0-22.5 35.38319 78.06817 76.10 73.03 50 52.73 45-50 AMW-09BC CAMA Cape Fear 03/06/15 PVC 2 0-14.5 35.38470 78.08251 76.13 72.86 69 71.3 64-69 AMW-11S CAMA Surficial 02/11/15 PVC 2 NA 35.38484 78.09484 74.42 74.53 13.7 13.54 8.7-13.7 AMW-11BC CAMA Cape Fear 02/16/15 PVC 2 18.3 35.38480 78.09486 73.80 73.92 47.5 46.51 42.5-47.5 AMW-12S CAMA Surficial 02/20/15 PVC 2 NA 35.38596 78,08899 91.25 88.58 25.4 27.75 15.4-25.4 AMW-12BC CAMA Cape Fear 02/19/15 PVC 2 NA 35.38597 78.08895 91.96 88.57 54.1 56.65 49.1-54.1 AMW-13S CAMA Surficial 02/26/15 PVC 2 NA 35.38219 78.08906 72.72 69.44 14.5 17.56 9.5-14.5 AMW-13BC CAMA Cape Fear 02/25/15 PVC 2 0-17 35.38219 78.08912 72.81 69.58 64.6 64.60 59.6-64.6 AMW-14S CAMA Surficial 04/28/15 PVC 2 NA 35.38716 78.07069 78.08 75.21 21.4 24 11.4-21.4 AMW-14BC CAMA Black Creek 04/23/15 PVC 2 0-25 35.38714 78.07071 77.43 74.69 45 47.15 40-45 AMW-15S CAMA Surficial 04/15/15 PVC 2 NA 35.38579 78.06724 77.22 74.53 16 18.63 11-16 AMW-15BC CAMA Black Creek 04/15/15 PVC 2 0-19 35.38577 78.06726 77.21 74.42 43 45.5 38-43 AMW-16BC CAMA Cape Fear 06/01/16 PVC 2 0-40 35.38752 78.08112 116.30 113.25 61 64.5 51-61 AMW-17S CAMA Surficial 06/03/16 PVC 2 NA 35.39063 78.07302 80.40 77.68 17 20.75 7-17 AMW-17BC CAMA Black Creek 06/07/16 PVC 2 0-28 35.39063 78.07304 80.71 77.81 43 46.96 33-43 AMW-18S CAMA Surficial 05/25/16 PVC 2 NA 35.38205 78.06720 78.28 74.14 31 35.93 21-31 AMW-18BC CAMA Black Creek 06/27/16 PVC 2 0-43 35.38204 78.06720 77.54 73.38 66 69.67 56-66 BGMW-9 NPDES Surficial 12/08/10 PVC 2 NA 35.38482 78.08267 76.17 NM 12 15.10 2-12 BGMW-10 NPDES Surficial 09/11/12 PVC 2 NA 35.38857 78.07190 78.46 75.88 15 18.26 5-15 CCR-100S CAMA Surficial 05/25/16 PVC 2 NA 35.38754 78.08103 116.51 113.50 37 40.41 27-37 CTMW-1 NPDES Black Creek 06/23/10 PVC 2 0-32 35.23717 84.93824 69.70 NM 37 40.19 32-37 CMW-5 NPDES Surficial 06/23/10 PVC 2 NA 35.37940 78.06772 69.78 NM 15 18.99 5-15 CMW-6 CAMA Surficial 07/29/10 PVC 2 NA 35.38320 78.06980 76.25 NM 12 15.71 2-12 CMW-6R NPDES Surficial 09/11/12 PVC 2 NA 35.38318 78.06810 75.37 73.16 15 16.85 5-15 CMW-7 NPDES Surficial 06/30/10 PVC 2 NA 35.38478 78.08273 78.78 NM 25 24.29 15-25 CMW-8 NPDES Surficial 12/07/10 PVC 2 NA 35.38023 78.07408 77.43 NM 20 24.06 10-20 CMW-10 NPDES Surficial 12/09/10 PVC 2 NA 35.38237 78.08271 73.29 NM 17 20.62 7-17 DMW-1 CAMA Black Creek 09/04/13 PVC 2 0-29.5 35.37968 78.07321 71.17 68.62 39.5 42.27 29.5-39.5 DMW-2 CAMA Black Creek 09/07/13 PVC 2 0-40 35.38854 78.07192 79.25 76.13 50 52.4 40-50 P:\Duke Energy Progress.1026\104. Lee Ash Basin GW Assessment\19.EG_CSASUP\tables\Table 1-1 Well Construction and Staff Gauge Data.xlsx Page 2 of 3 TABLE 1-1 WELL CONSTRUCTION AND STAFF GAUGE DATA H.F. LEE ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, GOLDSBORO, NC Monitoring Well ID Program Monitoring Zone Date Installed Material Diameter (inches) Surface Casing (Feet-BGS) Latitude Longitude Measuring Point TOC Elevation (Feet- MSL) Ground Surface Elevation (Feet- MSL) Total Well Depth (Feet-BGS) Measured Well Depth (Feet BTOC) Screened Interval (Feet-BGS) MW-1 CAMA Surficial 05/23/07 PVC 2 NA NM NM 78.58 76 15 18.6 10-15 MW-2 NON PROGRAM Surficial 05/23/07 PVC 2 NA NM NM 74.11 71.5 20 23.02 10-20 MW-3 CAMA Surficial 05/23/07 PVC 2 NA NM NM 80.84 78 20 23.21 10-20 MW-4 NON PROGRAM Surficial 05/23/07 PVC 2 NA NM NM 73.18 70.5 18 20.5 8-18 PZ-2 NON PROGRAM Ash 08/28/13 PVC 1 NA 35.38111 78.07486 94.52 90.24 30 19.60 6-16 PZ-3 NON PROGRAM Ash 08/27/13 PVC 1 NA 35.38398 78.07808 101.5 98.08 30 28 15-25 SMW-2 Former CAMA Surficial 09/09/13 PVC 2 NA 35.38757 78.08116 116.35 116.75 25 28.19 15-25 Active Basin Staff Gaugues SG-04 CAMA Surface Water 08/08/16 NA NA NA 35.38516 78.07859 71.00 NA NA NA NA SG-05 CAMA Surface Water 08/08/16 NA NA NA 35.38511 78.07823 70.84 NA NA NA NA SG-06 CAMA Surface Water 08/08/16 NA NA NA 35.38691 78.07192 74.45 NA NA NA NA SG-07 CAMA Surface Water 08/08/16 NA NA NA 35.38261 78.08439 65.61 NA NA NA NA SG-08 CAMA Surface Water 08/08/16 NA NA NA 35.38053 78.06841 67.68 NA NA NA NA River Gauge CAMA Surface Water 08/08/16 NA NA NA 35.38114 78.08724 89.27 NA NA NA NA Lay of Land Area (LOLA) LLMW-01 CAMA Ash 03/31/15 PVC 2 NA 35.38090 78.08065 77.72 75.15 5.0 7.45 2.5-5.0 LLMW-01S CAMA Surficial 04/07/15 PVC 2 NA 35.38088 78.08061 77.81 75.13 23 25.6 13-23 LLMW-02 CAMA Ash 03/31/15 PVC 2 NA 35.38078 78.07935 77.72 74.64 4.0 7.02 2-4 LLMW-02S CAMA Surficial 04/01/15 PVC 2 NA 35.38076 78.07935 77.59 74.73 13.2 16.1 9.2-13.2 LLMW-03 CAMA Ash 05/13/15 PVC 2 NA 35.38060 78.07837 77.59 73.88 5.0 8.39 4-5 Notes: BGS = Below ground surface BTOC = Below Top of casing NA = Not Applicable MSL = Mean sea level NM = Not Measured Prepared by: TCP Checked by: JHG P:\Duke Energy Progress.1026\104. Lee Ash Basin GW Assessment\19.EG_CSASUP\tables\Table 1-1 Well Construction and Staff Gauge Data.xlsx Page 3 of 3 TABLE 1-2 SURFICIAL GROUNDWATER EXCEEDANCES H.F. LEE ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, GOLDSBORO, NC Analytical Parameter pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Barium Beryllium Boron Chromium (VI) Chromium Cobalt Iron Lead Manganese Nitrate (as N) 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 ug/L ug/L ug/L ug/L ug/L ug/L mg-N/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 4* 700 0.07^ 10 1* 300 15 50 10 20 NE NE 250 0.2* 500 0.3* Sample ID Sample Collection Date Field Parameters Analytical Results Background AMW-11S 03/02/2015 5.6 4.40 13 82 1.76 9 214 6.96 0 <1 <1 16 <1 <50 NA <1 12.5 252 <1 476 0.151 <1 6.3 32 5.7 <0.2 55 <0.3 AMW-11S 06/11/2015 4.4 6.50 17 70 1.55 293 498 2.84 0 <1 <1 119 <1 <50 NA <1 9.13 60 <1 139 0.025 <1 6.09 31 6.2 <0.2 48 <0.3 AMW-11S DUP 06/11/2015 4.4 6.50 17 70 1.55 293 498 2.84 0 <1 <1 120 <1 <50 NA <1 8.61 57 <1 137 0.023 <1 5.98 31 5.8 <0.2 47 <0.3 AMW-11S 09/24/2015 5.3 8.55 19 56 2.4 193 398 5.34 NM <1 <1 64 <1 <50 NA <1 7.65 973 <1 131 NA <1 5.64 17 NA <0.2 NA 0.56 AMW-11S 12/04/2015 5.0 5.38 16 57 5 322 527 1.35 0 <1 <1 95 <1 <50 0.041 <1 7.96 44 <1 96 0.075 <1 4.92 23 5.4 <0.2 32 <0.3 AMW-11S 01/12/2016 5.1 3.73 16 57 1.23 141 346 1.69 0 <1 <1 119 <1 <50 0.049 <1 7.54 31 <1 74 0.084 <1 5.14 24 4.8 <0.2 41 <0.3 AMW-11S 03/01/2016 4.9 C 3.95 15 57 C 1.76 C 248 453 2.4 0 <1 <1 124 <1 <50 0.035 <1 6.76 14 <1 45 0.216 <1 4.47 24 5.8 <0.2 28 <0.3 AMW-11S 06/07/2016 4.7 6.41 18 63 4.09 327 532 1.87 0 <1 <1 135 <1 <50 0.046 <1 6.59 83 <1 40 0.034 <1 4.86 24 7 <0.2 25 <0.3 AMW-11S 08/03/2016 4.8 6.80 20 63 3.47 169 374 2.31 0 <1 <1 128 <1 <50 0.085 <1 6.58 154 <1 43 0.04 <1 5.08 23 6.5 <0.2 30 <0.3 AMW-11S DUP 06/03/2016 4.8 6.80 20 63 3.47 169 374 2.31 0 <1 <1 124 <1 <50 0.058 <1 6.68 <10 <1 40 0.04 <1 5.7 22 6.6 <0.2 <25 <0.3 AMW-12S 03/02/2015 5.4 5.20 13 ill 7.1 143 348 9.1 0.25 <1 <1 177 <1 <50 NA <1 4.05 333 <1 67 4.5 <1 6.6 59 3.2 <0.2 72 <0.3 AMW-12S 06/10/2015 4.4 10.08 21 95 2.55 146 351 3.06 0 <1 <1 152 <1 <50 NA <1 3.17 60 <1 20 4.2 <1 4.25 26 4.9 <0.2 56 <0.3 AMW-12S 12/04/2015 4.1 10.80 11 98 0.4 56 261 1.7 ND <1 <1 47 <1 <50 <0.03 <1 <1 8720 <1 176 4.3 <1 7.82 28 6.4 <0.2 43 <0.3 AMW-12S 01/11/2016 4.2 7.80 15 90 3.4 371 576 7.1 0 <1 <1 137 <1 <50 0.085 <1 2.91 209 <1 19 3.9 <1 4.08 24 4 <0.2 41 0.471 AMW-12S 03/01/2016 4.3 7.11 17 97 4.91 299 504 1.2 0 <1 <1 130 <1 <50 0.088 <1 3.01 50 <1 17 4.2 <1 4.06 23 2.4 <0.2 40 <0.3 AMW-12S 06/08/2016 4.1 9.29 22 99 3.63 373 578 2.85 0 <1 <1 122 <1 <50 0.14 <1 2.14 25 <1 16 3.7 <1 3.88 22 3.9 <0.2 47 <0.3 AMW-12S 08/04/2016 4.0 14.03 21 90 3.53 295 500 5.09 0 <1 <1 105 1.24 <50 0.13 <1 2.09 ill <1 14 3.2 <1 3.44 20 4 <0.2 54 0.387 AMW-13S 03/03/2015 5.7 4.47 11 237 2.9 -117 88 60.5 0.25 <1 <1 136 <1 <50 NA 3.78 35.7 2380 <1 727 <0.01 <1 22.7 78 14 <0.2 210 6.71 AMW-13S 06/10/2015 5.2 12.19 21 200 2.18 176 381 4.06 0.5 <1 <1 96 <1 <50 NA <1 <1 66 <1 26 0.023 <1 20.3 66 16 <0.2 140 <0.3 AMW-13S 12/04/2015 5.9 8.90 18 86 4.6 99 304 1 ND <1 <1 52 <1 <50 0.033 <1 2.29 34 <1 12 0.081 <1 8.51 30 15 <0.2 83 <0.3 AMW-13S 01/11/2016 6.7 3.08 16 211 1.92 98 303 3.46 NM <1 <1 73 <1 <50 0.095 <1 8.06 122 <1 24 0.041 <1 12 42 18 <0.2 86 0.398 AMW-13S 03/01/2016 5.6 3.75 16 84 5.61 212 417 7.7 0 <1 <1 47 <1 <50 0.094 <1 1.18 415 <1 <5 0.453 <1 7.21 34 15 <0.2 67 0.59 AMW-13S 06/08/2016 5.3 10.96 18 179 4.2 217 422 0.68 0 <1 <1 88 <1 <50 0.11 <1 <1 28 <1 <5 0.027 <1 18.5 59 15 <0.2 120 <0.3 AMW-13S 08/03/2016 5.5 11.32 22 94 4.61 302 507 0.99 0 <1 <1 49 <1 <50 0.31 <1 <1 14 <1 <5 0.15 <1 10 34 14 <0.2 75 <0.3 AMW-17S 07/28/2016 4.6 6.01 23 134 1.94 450 655 2.34 NM <1 <1 73 <1 63 <0.03 <1 2.21 49 <1 38 2.8 <1 9.57 49 35 <0.2 80 <0.3 CCR-100S 07/20/2016 4.6 26.32 20 169 5.89 446 651 8.53 NM <1 <1 528 <1 <50 <0.03 <1 5.64 70 2.61 119 10 <1 3.74 92 4.9 <0.2 110 0.462 SMW-02 09/24/2013 5.5 NM 17 192 1.61 62 NM 22.4 NM <0.34 2.6 23.9 NA 48.6 j NA <1.6 NA 5040 0.37 j 133 0.61 <0.5 23.4 NA 27.8 <0.15 152 NA SMW-02 06/16/2015 4.9 25.50 24 152 3.88 244 449 4.98 0 <1 <1 338 <1 <50 NA <1 1.62 100 <1 61 8.5 <1 3.95 93 4.3 <0.2 110 0.307 SMW-02 03/04/2016 4.7 24.35 10 154 6.69 260 465 9.7 0 <1 <1 426 <1 <50 <0.03 <1 2.51 129 <1 67 9.3 <1 3.6 85 7 <0.2 120 0.402 SMW-02 06/07/2016 4.7 25.76 22 175 4.77 293 498 2.48 0 <1 <1 455 <1 <50 <0.03 <1 2.11 18 <1 70 11 <1 3.01 103 4.4 <0.2 120 0.323 IMW-0iS 05/26/2015 5.4 4.72 20 172 0.43 66 271 8.9 2.5 <1 <1 194 <1 <50 NA <1 6.21 3150 <1 258 2.7 1.14 7.78 115 24 <0.2 97 0.627 IMW-ois 06/12/2015 5.6 5.29 19 166 0.53 205 410 1.73 2 <1 <1 206 <1 <50 NA <1 4.36 2230 <1 234 3.2 <1 7.8 123 25 <0.2 110 <0.3 IMW-0is 09/24/2015 5.3 7.80 20 158 0.5 150 355 0.67 NM <1 <1 208 <1 <50 NA <1 2.43 195 <1 102 NA <1 7.22 125 NA <0.2 NA <0.3 IMW-01S 12/06/2015 5.5 3.63 17 283 0.96 103 308 7.35 1 <0.5 <0.5 190 0.44 <50 <0.03 <0.5 3.4 2100 0.15 130 3.2 0.75 7.61 110 20 <0.1 b 81 <1 IMW-ois 03/01/2016 5.1 3.53 16 152 1.6 94 299 7.7 0.3 <1 <1 188 <1 <50 0.11 <1 3.86 1290 <1 131 3.6 N1 <1 7.97 109 22 <0.2 88 0.313 IMW-0is 06/07/2016 5.2 3.77 18 153 0.6 104 309 2.8 0.2 <1 <1 179 <1 <50 0.18 <1 3.95 411 <1 107 4.4 <1 6.97 122 22 <0.2 110 <0.3 IMW-01S DUP 06/07/2016 5.2 3.77 18 153 0.6 104 309 2.8 0.2 <1 <1 184 <1 <50 0.18 <1 4.08 414 <1 109 4.4 <1 7 124 24 <0.2 100 <0.3 IMW-o15 08/03/2016 4.9 4.47 20 150 1.46 310 515 1.29 0 <1 <1 216 1.07 <50 0.5 <1 3.68 114 <1 89 4.7 <1 7.77 106 23 <0.2 93 <0.3 IMW-03S 05/28/2015 5.8 3.28 21 136 4.13 47 252 9.54 1.5 <1 <1 154 <1 <50 NA <1 13.3 4220 <1 556 <0.01 <1 6.94 61 1.5 <0.2 85 <0.3 IMW-03S 06/16/2015 5.7 3.40 26 135 2.23 -44 161 4.62 2.5 <1 <1 142 <1 <50 NA <1 12.2 6320 <1 722 <0.01 <1 8.05 67 1.4 <0.2 94 <0.3 IMW-03S 12/06/2015 6.4 1.45 14 215 0.4 -46 159 3.82 3 <0.5 <0.5 230 <0.2 <50 <0.03 <0.5 14.9 25900 <0.1 880 <0.02 <0.5 6.85 100 <1 <0.1 132 <1 IMW-03S 01/13/2016 6.4 1.40 14 150 0.3 -66 139 55.7 7 <1 <1 236 <1 <50 <0.03 5.42 16.2 35100 <1 822 0.039 <1 7.14 107 <0.1 <0.2 110 <0.3 IMW-03S 03/02/2016 6.3 1.38 16 165 0.49 165 370 14.5 7 <1 <1 188 <1 <50 <0.03 <1 9.9 14700 <1 571 <0.01 <1 7.06 80 0.34 <0.2 120 <0.3 IMW-03S 06/08/2016 6.6 1.73 20 272 0.2 -94 ill 2.6 6 <1 <1 225 <1 <50 <0.15 D3 <1 12.5 34500 <1 760 <0.01 <1 6.29 109 0.24 <0.2 120 <0.3 IMW-03S 08/03/2016 6.5 2.49 24 295 0.23 -19 186 2.13 5.5 <1 1.08 276 <1 <50 <0.6 D3 <1 15.8 43200 <1 690 <0.01 <1 5.68 91 0.29 <0.2 110 <0.3 Active Ash Basin ABMW-01S 03/19/2015 6.9 24.01 16 939 0.22 -90 115 8.31 1.5 <1 745 574 <1 2660 NA <1 6.17 19900 <1 1160 <0.1 <1 32.3 4320 39 <0.2 510 0.512 ABMW-01S 06/11/2015 6.9 24.65 24 941 0.38 -138 67 4.49 1.5 <1 833 601 <1 2550 NA <1 1.43 19600 <1 1170 <0.01 <1 34 4330 29 <0.2 530 0.303 ABMW-01S 12/04/2015 6.7 1 25.40 17 1045 0.18 -149 56 0.99 2.6 <1 1040 688 <1 2800 <0.03 <1 7.14 33600 <1 1440 <0.01 <1 37 4600 32 <0.2 570 <0.3 P:\Duke Energy Progress.1026\104. Lee Ash Basin GW Assessment\19.EG_CSASUP\tables\Table 1-2 Surficial Groundwater Exceedances.xlsx Page 1 of 9 TABLE 1-2 SURFICIAL GROUNDWATER EXCEEDANCES H.F. LEE ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, GOLDSBORO, NC Analytical Parameter pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Barium Beryllium Boron Chromium (VI) Chromium Cobalt Iron Lead Manganese Nitrate (as N) 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 ug/L ug/L ug/L ug/L ug/L ug/L mg-N/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 4* 700 0.07^ 10 1* 300 15 50 10 20 NE NE 250 0.2* 500 0.3* Sample ID Sample Collection Date Field Parameters Analytical Results ABMW-01S 01/12/2016 6.9 24.30 15 1032 0.35 -133 72 0.97 3.5 <1 1080 730 <1 3070 <0.03 <1 7.37 34300 <1 1460 0.019 <1 35.9 4790 34 <0.2 580 <0.3 AMW-04BC 05/21/2015 7.8 11.37 19 422 0.29 -156 49 8.57 3.25 <1 <1 200 <1 115 NA <1 <1 6190 <1 118 0.028 <1 24.7 215 22 <0.2 240 0.521 AMW-04BC 06/09/2015 8.0 12.67 18 404 0.69 -126 79 2.76 0.5 <1 <1 205 <1 116 NA <1 <1 3460 <1 75 <0.01 <1 24.1 208 19 <0.2 220 0.322 AMW-04BC 02/01/2016 7.0 8.13 17 439 0.87 91 296 6.42 0.5 <1 <1 180 <1 121 <0.03 <1 <1 418 <1 18 0.033 <1 26.8 258 32 <0.2 260 0.489 AMW-14S 05/20/2015 5.4 4.25 25 4 8.27 86 291 43.1 2.7 <1 1.72 74 <1 <50 NA <1 4.91 12700 <1 159 0.021 <1 11.4 67 29 <0.2 100 0.605 AMW-14S 06/11/2015 6.2 5.34 20 186 0.57 130 335 4.5 3.5 <1 2.1 95 <1 <50 NA <1 6.05 15800 <1 160 <0.01 <1 8.73 69 31 <0.2 110 0.373 AMW-14S 12/04/2015 5.9 4.08 17 146 0.13 -13 192 9.11 2.5 <1 1.85 64 <1 <50 <0.03 <1 3.78 11300 <1 110 <0.01 <1 9.57 52 24 <0.2 120 0.407 AMW-14S 01/12/2016 6.0 4.05 13 109 0.28 -3 202 2.9 3 <1 1.18 57 <1 <50 <0.03 M1 <1 2.9 6200 <1 78 0.015 <1 11.5 41 21 <0.2 89 0.332 AMW-15S 05/21/2015 6.0 4.43 18 127 0.3 3 208 7.28 3.25 <1 <1 57 <1 149 NA 1.21 <1 3490 <1 66 0.014 <1 7.78 73 22 <0.2 77 1.75 AMW-15S 06/11/2015 5.8 5.90 18 136 0.45 120 325 2.86 2 <1 <1 62 <1 124 NA 1.15 <1 3950 <1 76 <0.01 <1 8.25 76 20 <0.2 73 1.92 AMW-15S 12/06/2015 5.7 3.74 16 123 0.3 133 338 2.46 0.5 <0.5 1.1 56 <0.2 150 <0.03 0.52 0.86 1100 <0.1 40 <0.02 <0.5 7.84 78 23.9 <0.1 b 53 1.2 AMW-15S 01/12/2016 5.7 3.45 15 115 0.94 133 338 1.4 1 <1 <1 58 <1 97 <0.03 <1 1.09 836 <1 47 0.092 <1 8.41 83 27 <0.2 61 1.67 AMW-18S 07/28/2016 6.1 10.68 23 433 0.31 76 281 8.81 NM <1 15.6 116 <1 2250 1.7 M6 <1 7.14 14700 <1 337 <0.01 <1 21.7 517 63 <0.2 240 0.933 BGMW-9 12/15/2010 5.7 3.74 10 154 NM NM NM 5o NM <0.5 <5 154 NA <50 NA <5 NA 919 <5 79.4 NA <10 NA NA 15.8 0.13 206 NA BGMW-9 03/03/2011 5.6 3.59 11 350 2.4 198 403 12.4 NM <0.5 <5 173 NA <50 NA <5 NA 757 <5 185 NA <10 NA NA 24.1 b <0.1 228 b NA BGMW-9 06/08/2011 5.7 6.51 20 466 0.86 -43 162 16.5 NM <0.5 <5 188 NA <50 NA <5 NA 784 <5 322 NA <10 NA NA 31.6 <0.1 208 NA BGMW-9 10/05/2011 5.7 8.06 19 227 2.01 -42 164 8.24 NM <0.5 <5 131 NA 52.5 NA <5 NA 1720 <5 67.4 NA <10 NA NA 17.6 <0.1 145 NA BGMW-9 03/14/2012 5.8 3.59 16 487 1.11 -55 150 16 NM <0.5 <5 157 NA 56.5 NA <5 NA 497 <5 43.1 NA <10 NA NA 92.7 <0.1 295 NA BGMW-9 06/13/2012 5.6 4.28 20 278 1.12 -61 144 4.74 NM <0.5 <5 110 NA <50 NA <5 NA 580 <5 169 NA <10 NA NA 27.1 <0.1 152 NA BGMW-9 10/17/2012 6.2 8.88 18 293 1.61 23 228 9.62 NM <0.5 <5 148 NA 50.9 NA <5 NA 2960 <5 64.8 NA <10 NA NA 26.6 <0.1 161 NA BGMW-9 03/07/2013 5.6 3.59 10 413 3.68 241 446 26 NM <1 <1 113 NA <50 NA <5 NA 346 <1 13 NA <1 NA NA 50 <0.2 270 NA BGMW-9 06/05/2013 5.2 5.68 17 269 0.53 214 419 4.55 NM <1 <1 126 NA <50 NA <5 NA 215 <1 72 NA <1 NA NA 24 <0.2 170 NA BGMW-9 10/10/2013 5.6 6.31 19 296 0.59 181 386 9.82 NM <1 <1 137 NA <50 NA <5 NA 1120 <1 83 NA <1 NA NA 24 <0.2 180 NA BGMW-9 03/10/2014 5.7 3.49 13 432 1.27 262 467 9.65 NM <1 <1 144 NA <50 NA <5 NA 367 <1 27 NA <1 NA NA 38 <0.2 250 NA BGMW-9 06/11/2014 5.6 4.35 20 392 0.7 159 364 9.2 NM <1 <1 158 NA <50 NA <5 NA 792 <1 127 NA <1 NA NA 25 <0.2 230 NA BGMW-9 10/16/2014 5.7 3.59 19 433 0.36 106 311 9.27 NM <1 <1 161 NA <50 NA <5 NA 1730 <1 142 NA <1 NA NA 22 <0.2 220 NA BGMW-9 03/03/2015 5.8 3.46 8 652 1.57 309 514 6.44 NM <1 <1 174 NA <50 NA <5 NA 376 <1 45 <0.023 <1 NA NA 33 <0.2 380 NA BGMW-9 06/09/2015 5.9 5.65 19 370 0.48 46 251 7.46 1 <1 <1 134 <1 <50 NA <5 14.1 1730 <1 641 <0.023 <1 31 NA 23 <0.2 190 NA BGMW-9 10/06/2015 5.2 6.43 20 311 3.64 229 434 15.1 NM <1 <1 127 <1 <50 NA <5 1.85 1060 <1 65 0.03 <1 36.5 77 29 <0.2 200 1.59 BGMW-9 12/04/2015 6.2 3.75 14 412 0.2 -25 180 24.4 1.5 <5 <5 118 <5 <50 0.15 M1 5.18 30.9 9230 <5 833 <0.01 <5 47.6 195 20 <1 420 33.8 BGMW-9 01/12/2016 6.3 3.55 13 497 0.5 18 223 9.16 2 <1 4.35 137 <1 <50 0.065 7.07 27.2 28300 1.51 859 0.026 1.49 5.08 237 16 <0.2 420 59.7 BGMW-9 03/03/2016 7.1 3.62 11 459 0.26 -56 149 9.7 2 <1 3.17 117 <1 <50 NA <5 20 25200 <1 697 <0.023 1.22 44.4 189 18 <0.2 360 44 BGMW-9 06/06/2016 6.2 4.08 19 457 0.24 -124 81 3.36 NM <1 2.33 114 <1 <50 NA <5 11.4 23500 <1 556 <0.023 <1 42.7 151 19 <0.2 280 15.3 BGMW-10 10/18/2012 6.2 6.40 17 128 0.92 -15 190 17 NM 0.59 <5 65.7 NA 59.8 NA <5 NA 6500 <5 75.6 NA <10 NA NA 8.5 <0.1 73 NA BGMW-10 03/07/2013 5.7 3.85 11 113 0.38 71 276 8.66 NM <1 <1 55 NA <50 NA <5 NA 6050 <1 83 NA <1 NA NA 8.4 <0.2 62 NA BGMW-10 06/05/2013 5.9 5.97 16 137 0.26 29 234 49.6 NM <1 6.63 67 NA <50 NA <5 NA 13500 <1 94 NA <1 NA NA 7.4 <0.2 78 NA BGMW-10 10/10/2013 5.7 4.77 17 111 0.16 83 288 37.9 NM <1 2.65 62 NA <50 NA <5 NA 7560 <1 87 NA <1 NA NA 9 <0.2 75 NA BGMW-10 03/10/2014 4.8 3.48 13 149 1.82 317 522 2.08 NM <1 <1 89 NA <50 NA <5 NA 465 <1 75 NA <1 NA NA 14 <0.2 79 NA BGMW-10 06/11/2014 4.8 4.44 21 143 0.27 248 453 5.8 NM <1 <1 101 NA <50 NA <5 NA 917 <1 72 NA <1 NA NA 11 <0.2 100 NA BGMW-10 10/17/2014 4.9 3.90 18 105 0.26 235 440 4.98 NM <1 <1 91 NA <50 NA <5 NA 1280 <1 48 NA <1 NA NA 14 <0.2 59 NA BGMW-10 03/03/2015 4.9 3.44 9 122 0.78 357 562 3.44 NM <1 <1 80 NA <50 NA <5 NA 366 <1 48 0.07 <1 NA NA 20 <0.2 72 NA BGMW-10 06/08/2015 4.8 5.20 19 118 0.32 194 399 4.25 0.5 <1 <1 94 <1 <50 NA <5 1.11 857 <1 57 0.36 <1 7.25 NA 16 <0.2 83 NA BGMW-10 10/06/2015 5.2 3.90 19 123 0.44 118 323 3.47 NM <1 <1 75 <1 <50 NA <5 2.07 4450 <1 68 <0.023 <1 8.95 65 22 <0.2 77 <0.3 BGMW-10 12/04/2015 5.7 3.76 15 112 0.7 151 356 4.8 2 <1 <1 96 <1 <50 <0.03 <1 1.49 1400 <1 78 <0.01 <1 7.12 78 17 <0.2 69 <0.3 BGMW-10 01/12/2016 4.8 3.63 15 130 0.5 203 408 8.95 0 <1 <1 120 <1 <50 <0.03 <1 1.29 1660 <1 81 0.052 <1 10.1 99 17 <0.2 81 0.675 BGMW-10 03/03/2016 4.8 3.72 12 185 0.42 319 524 4.8 0.5 <1 <1 167 <1 <50 NA <5 1.53 726 <1 72 0.02 <1 14.9 141 17 <0.2 120 0.351 BGMW-10 06/06/2016 4.8 4.26 18 124 0.46 224 429 1.84 NM <1 <1 133 <1 <50 NA <5 1.32 594 <1 66 0.79 <1 8.61 96 22 <0.2 72 0.438 CMW-5 12/13/2010 6.6 12.30 16 418 NM NM NM 8.2 NM <0.5 <5 96 NA 3090 NA <5 NA 1140 <5 64.4 NA <10 NA NA 92.2 <0.1 343 NA CMW-5 03/03/2011 6.5 10.76 14 508 0.81 142 347 0.78 NM <0.5 <5 67.5 b NA 2520 NA <5 NA 90.6 <5 86.9 NA <10 NA NA 76.7 <0.1 316 NA CMW-5 06/08/2011 6.4 12.51 21 497 0.93 -87 118 1.9 NM <0.5 <5 104 NA 3110 NA <5 NA 342 <5 39 NA <10 NA NA 15.5 <0.1 306 NA P:\Duke Energy Progress.1026\104. Lee Ash Basin GW Assessment\19.EG_CSASUP\tables\Table 1-2 Surficial Groundwater Exceedances.xlsx Page 2 of 9 TABLE 1-2 SURFICIAL GROUNDWATER EXCEEDANCES H.F. LEE ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, GOLDSBORO, NC Analytical Parameter pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Barium Beryllium Boron Chromium (VI) Chromium Cobalt Iron Lead Manganese Nitrate (as N) 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 ug/L ug/L ug/L ug/L ug/L ug/L mg-N/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* 10 700 4* 700 0.07^ 10 1* 300 15 SO 10 20 NE NE 250 0.2* 500 0.3* Sample ID Sample Collection Date Field Parameters Analytical Results CMW-5 10/05/2011 6.3 12.76 21 587 0.47 -74 131 6.15 NM <0.5 <5 131 NA 3710 NA <5 NA 569 <5 163 NA <10 NA NA 98.4 <0.1 406 NA CMW-5 03/15/2012 6.3 11.62 16 486 1.6 -83 123 1.94 NM <0.5 <5 92.7 NA 3140 NA <5 NA 191 <5 50.S NA <10 NA NA 132 <0.1 406 NA CMW-5 06/13/2012 6.3 12.69 20 544 1.22 -62 143 9.8 NM <0.5 <5 104 NA 3180 NA <5 NA 707 <5 35.2 NA <10 NA NA 97.7 <0.1 338 NA CMW-5 10/17/2012 6.8 12.72 20 665 0.7 -4 201 4.14 NM <0.5 <5 112 NA 3940 NA <5 NA 327 <5 79.3 NA <10 NA NA 99.4 <0.1 421 NA CMW-5 03/07/2013 6.0 8.45 12 413 3.68 113 318 7.19 NM <1 1.12 49 NA 2140 NA <5 NA 336 <1 15 NA <1 NA NA 85 <0.2 260 NA CMW-5 06/05/2013 5.9 12.41 16 504 0.76 140 345 4.45 NM <1 1.34 87 NA 3060 NA <5 NA 317 <1 38 NA <1 NA NA 84 <0.2 330 NA CMW-5 10/11/2013 6.5 12.00 19 619 0.51 70 275 7.62 NM <1 3.15 112 NA 3560 NA <5 NA 2350 <1 59 NA <1 NA NA 62 <0.2 390 NA CMW-5 03/10/2014 6.1 3.45 14 265 4.05 151 356 9.89 NM <1 2.77 47 NA 1120 NA <5 NA 651 <1 11 NA <1 NA NA 37 <0.2 160 NA CMW-5 DUP 03/10/2014 6.1 3.45 14 265 4.05 151 356 9.89 NM <1 2.63 48 NA 1140 NA <5 NA 589 <1 11 NA <1 NA NA 37 <0.2 160 NA CMW-5 06/11/2014 6.3 11.23 19 311 0.36 108 313 5.1 NM <1 1.35 63 NA 1770 NA <5 NA 354 <1 35 NA <1 NA NA 49 <0.2 210 NA CMW-5 10/17/2014 6.7 7.16 19 456 0.11 10 215 8.47 NM <1 2.05 89 NA 2710 NA <5 NA 1220 <1 80 NA <1 NA NA 43 <0.2 290 NA CMW-5 DUP 10/17/2014 6.7 7.16 19 456 0.11 10 215 8.47 NM <1 2.02 89 NA 2780 NA <5 NA 1100 <1 81 NA <1 NA NA 43 <0.2 290 NA CMW-5 03/03/2015 6.2 3.17 8 212 4.32 227 432 17.1 NM <1 2.31 53 NA 773 NA <5 NA 619 <1 8 0.8 <1 NA NA 25 <0.2 130 NA CMW-5 06/08/2015 5.9 18.99 19 280 0.72 135 340 8.78 <0.5 <1 1.01 70 <1 1380 NA <5 <1 383 <1 18 0.03 <1 16.4 NA 30 <0.2 180 NA CMW-5 10/06/2015 5.8 4.62 20 232 2.7 180 385 26.9 NM <1 1.75 54 <1 694 NA <5 <1 897 1.21 21 0.96 <1 16.3 401 49 <0.2 190 3.53 CMW-5 DUP 10/06/2015 5.8 4.62 20 232 2.7 180 385 26.9 NM <1 1.69 54 <1 693 NA <5 <1 944 1.08 21 0.97 <1 16.4 404 48 <0.2 200 3.52 CMW-5 12/05/2015 6.0 7.84 16 440 0.3 100 305 1.85 0 <0.5 0.82 120 <0.2 2000 <0.03 <0.5 <0.5 170 <0.1 50 0.2 <0.5 21.7 920 73.2 <0.1 286 4.6 CMW-5 02/01/2016 6.7 6.71 15 582 0.42 84 199 5.61 288.6 <1 1.12 124 <1 2510 0.092 <1 1 372 <1 131 <0.01 <1 25.7 1660 78 <0.2 360 3.2 CMW-5 03/03/2016 7.5 3.88 15 580 0.21 -28 177 1.4 0.5 <1 <1 102 <1 2660 NA <5 <1 660 <1 126 <0.023 <1 26 1660 81 <0.2 370 2.1S CMW-5 DUP 03/03/2016 7.5 3.88 15 580 0.21 -28 177 1.4 0.5 <1 <1 102 <1 2670 NA <5 <1 679 <1 127 <0.023 <1 26.1 1660 81 <0.2 360 2.02 CMW-5 06/06/2016 6.5 10.22 20 521 1.13 52 257 8.61 NM <1 1.63 104 <1 2840 NA 6 <1 3480 <1 127 0.06 <1 27.8 1110 46 <0.2 300 7.98 CMW-6 12/14/2010 6.9 4.67 14 560 NM NM NM 1.48 NM <0.5 284 169 NA 4320 NA <5 NA 3510 <5 508 NA <10 NA NA 95.7 <0.1 455 NA CMW-6 03/03/2011 6.7 4.62 14 808 0.35 -111 94 8.94 NM <0.5 533 187 NA 4630 NA <5 NA 5190 <5 650 NA <10 NA NA 93.6 <0.1 492 NA CMW-6 06/08/2011 6.7 5.73 21 807 0.32 -147 58 0.92 NM <0.5 665 208 NA 4940 NA <5 NA 4530 <5 768 NA <10 NA NA 7.2 <0.1 461 NA CMW-6 DUP 06/08/2011 6.7 5.73 21 807 0.32 -147 58 0.92 NM <0.5 670 209 NA 4930 NA <5 NA 4550 <5 763 NA <10 NA NA 13.7 <0.1 482 NA CMW-6 10/05/2011 6.7 5.15 20 780 0.27 -189 16 0.8 NM <0.5 633 190 NA 4660 NA <5 NA 4500 <5 746 NA <10 NA NA 63 <0.1 449 NA CMW-6 03/14/2012 6.7 4.58 17 708 0.28 -175 30 5.04 NM <0.5 640 214 NA 4460 NA <5 NA 6230 <5 896 NA <10 NA NA 45.4 <0.1 498 NA CMW-6 06/13/2012 6.7 5.33 19 831 0.83 -155 50 1.34 NM <0.5 592 209 NA 4250 NA <5 NA 6790 <5 936 NA <10 NA NA 54.3 <0.1 479 NA CMW-6 09/25/2015 6.7 6.63 20 876 0.2 -109 96 8.83 NM <1 203 269 <1 3620 NA <1 <1 14800 <1 893 NA <1 31.1 3720 NA <0.2 NA 2.22 CMW-6R 10/18/2012 6.4 5.98 16 647 1.59 -89 116 4.76 NM <0.5 30.2 230 NA 3480 NA <5 NA 11000 <5 455 NA <10 NA NA 95 <0.1 386 NA CMW-6R 03/07/2013 5.7 4.76 11 291 0.3 -47 158 6.08 NM <1 10.2 131 NA 1360 NA <5 NA 11200 <1 183 NA <1 NA NA 52 <0.2 190 NA CMW-6R DUP 03/07/2013 5.7 4.76 11 291 0.3 -47 158 6.08 NM <1 10.9 136 NA 1420 NA <5 NA 11700 <1 193 NA <1 NA NA 52 <0.2 190 NA CMW-6R 06/05/2013 6.4 6.20 16 707 0.33 -22 183 1.29 NM <1 52.4 219 NA 3440 NA <5 NA 12900 <1 536 NA <1 NA NA 61 <0.2 400 NA CMW-6R 10/11/2013 6.5 6.19 18 668 0.32 -46 159 3.22 NM <1 51.3 223 NA 3400 NA <5 NA 12800 <1 519 NA <1 NA NA 66 <0.2 400 NA CMW-6R 03/10/2014 5.5 4.25 12 188 0.25 30 235 5.16 NM <1 3.09 74 NA 452 NA <5 NA 6660 <1 124 NA <1 NA NA 41 <0.2 120 NA CMW-6R 06/11/2014 6.3 5.99 17 608 0.3 -53 152 2.7 NM <1 36 202 NA 3160 NA <5 NA 13400 <1 482 NA <1 NA NA 69 <0.2 380 NA CMW-6R DUP 06/11/2014 6.3 5.99 17 608 0.3 -53 152 2.7 NM <1 34.5 201 NA 3110 NA <5 NA 13300 <1 475 NA <1 NA NA 69 <0.2 380 NA CMW-6R 10/17/2014 6.4 5.49 18 578 0.2 -30 175 6.57 NM <1 46.1 210 NA 3000 NA <5 NA 13600 <1 495 NA <1 NA NA 71 <0.2 370 NA CMW-6R 03/03/2015 5.8 4.25 9 203 0.14 -2 203 20.2 NM <1 6.95 67 NA 494 NA <5 NA 7420 <1 134 <0.023 <1 NA NA 39 <0.2 110 NA CMW-6R DUP 03/03/2015 5.8 4.25 9 203 0.14 -2 203 20.2 NM <1 7.11 67 NA 494 NA <5 NA 7360 <1 133 <0.023 <1 NA NA 39 <0.2 120 NA CMW-6R 06/09/2015 7.4 6.12 17 584 0.38 -78 127 4.9 6.5 <1 32.4 195 <1 2800 NA <5 3.64 13000 <1 443 <0.023 <1 29 NA 73 <0.2 320 NA CMW-6R 10/06/2015 5.5 5.22 20 296 0.23 31 236 9.68 NM <1 6.1 127 <1 848 NA <5 7.82 9680 <1 240 <0.023 <1 16.4 536 96 <0.2 170 2.34 CMW-6R 12/05/2015 5.6 4.94 16 235 0.14 -1 204 9.11 1 <0.5 4.6 110 <0.2 840 <0.03 1.2 4.2 9600 0.14 160 <0.02 <0.5 16.6 270 48.6 <0.1 170 2.8 CMW-6R 01/12/2016 5.6 4.70 15 127 0.2 -45 160 7.4 5.5 <1 2.91 91 <1 517 <0.03 2.35 5.04 7580 <1 135 0.025 <1 12 222 48 <0.2 140 2.71 CMW-6R 03/03/2016 6.4 4.78 12 191 0.25 27 232 3.4 3 <1 1.55 100 <1 580 NA <5 4.68 8290 <1 135 <0.023 <1 13.5 184 45 <0.2 120 2.37 CMW-6R 06/06/2016 6.4 5.92 18 552 0.22 -92 113 0.36 NM <1 34 182 <1 2600 NA <5 3.08 11100 <1 416 <0.023 <1 28.6 1300 77 <0.2 320 1.56 CMW-6R DUP 06/06/2016 6.4 5.92 18 552 0.22 -92 113 0.36 NM <1 33.8 186 <1 2650 NA <5 2.97 11400 <1 422 <0.023 <1 29.1 1270 78 <0.2 320 1.74 CMW-7 12/14/2010 5.9 17.42 12 301 NM NM NM 5.4 NM <0.5 <5 213 NA 67.9 NA <5 NA 10600 <5 548 NA <10 NA NA <5 <0.1 265 NA CMW-7 03/03/2011 5.4 16.79 15 323 0.76 99 304 9.66 NM <0.5 5.1 149 NA 50.2 NA <5 NA 3960 <5 483 NA <10 NA NA 7.1 b <0.1 198 b NA CMW-7 06/08/2011 5.8 17.45 24 466 0.43 -46 159 0.89 1 NM 1 <0.5 <5 201 NA <50 NA <5 NA 12422J <5 616 NA <10 NA NA <5 <0.1 277 NA P:\Duke Energy Progress.1026\104. Lee Ash Basin GW Assessment\19.EG_CSASUP\tables\Table 1-2 Surficial Groundwater Exceedances.xlsx Page 3 of 9 TABLE 1-2 SURFICIAL GROUNDWATER EXCEEDANCES H.F. LEE ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, GOLDSBORO, NC Analytical Parameter pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Barium Beryllium Boron Chromium (VI) Chromium Cobalt Iron Lead Manganese Nitrate (as N) 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 ug/L ug/L ug/L ug/L ug/L ug/L mg-N/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* 10 700 4* 700 0.07^ 10 1* 300 15 SO 10 20 NE NE 250 0.2* 500 0.3* Sample ID Sample Collection Date Field Parameters Analytical Results CMW-7 10/05/2011 5.8 18.13 17 451 0.81 -111 94 1.75 NM <0.5 <5 183 NA 57.6 NA <5 NA 9580 <5 374 NA <10 NA NA <5 <0.1 256 NA CMW-7 DUP 10/05/2011 5.8 18.13 17 451 0.81 -111 94 1.75 NM <0.5 <5 183 NA 52.7 NA <5 NA 10600 <5 430 NA <10 NA NA <5 <0.1 254 NA CMW-7 03/14/2012 5.8 16.24 19 451 0.58 -76 129 0.9 NM <0.5 <5 205 NA 57.8 NA <5 NA 11500 <5 515 NA <10 NA NA <5 <0.1 317 NA CMW-7 06/13/2012 5.9 17.23 19 465 0.88 -52 153 1.44 NM <0.5 <5 177 NA 68.1 NA <5 NA 9960 <5 416 NA <10 NA NA <2 <0.1 265 NA CMW-7 10/17/2012 6.0 18.77 20 456 0.59 -2 203 0.98 NM <0.5 <5 205 NA 58.9 NA <5 NA 8970 <5 316 NA <10 NA NA <2 <0.1 272 NA CMW-7 03/07/2013 5.7 15.39 16 428 0.31 34 239 1.08 NM <1 1.3 202 NA <50 NA <5 NA 9750 <1 471 NA <1 NA NA 2 <0.2 250 NA CMW-7 06/05/2013 5.8 17.72 20 477 0.35 48 253 1.81 NM <1 1.24 190 NA <50 NA <5 NA 10200 <1 381 NA <1 NA NA 0.78 <0.2 290 NA CMW-7 DUP 06/05/2013 5.8 17.72 20 477 0.35 48 253 1.81 NM <1 1.32 188 NA <50 NA <5 NA 10300 <1 383 NA <1 NA NA 0.78 <0.2 280 NA CMW-7 10/10/2013 5.9 17.17 18 455 0.34 43 248 7.04 NM <1 1.05 197 NA <50 NA <5 NA 11700 <1 408 NA <1 NA NA 0.96 <0.2 280 NA CMW-7 03/11/2014 5.9 11.88 15 425 0.46 44 249 3.26 NM <1 <1 331 NA <50 NA <5 NA 14900 <1 479 NA <1 NA NA 2.3 <0.2 270 NA CMW-7 06/12/2014 5.8 15.49 19 464 0.28 29 234 9.1 NM <1 1.11 188 NA <50 NA <5 NA 16200 <1 529 NA <1 NA NA 2.2 <0.2 290 NA CMW-7 10/16/2014 5.6 15.56 19 429 0.2 70 275 3.26 NM <1 1.32 180 NA <50 NA <5 NA 10600 <1 394 NA <1 NA NA 1.7 <0.2 270 NA CMW-7 03/03/2015 6.0 11.66 13 376 0.2 1 206 10.6 NM <1 <1 354 NA <50 NA <5 NA 8270 <1 287 0.04 <1 NA NA 1.6 <0.2 210 NA CMW-7 06/09/2015 6.1 17.21 21 450 0.58 4 209 7.81 2.5 <1 <1 181 <1 <50 NA <5 12.7 12000 <1 452 0.03 <1 51.9 NA 2.3 <0.2 250 NA CMW-7 10/06/2015 5.9 16.75 18 355 0.4 -7 198 9.62 NM <1 <1 258 <1 <50 NA <5 5.65 8690 <1 292 <0.023 <1 36.2 110 2.1 <0.2 200 0.392 CMW-7 12/04/2015 6.2 15.46 18 401 0.2 11 216 7.5 2 <1 <1 224 <1 <50 <0.03 <1 7.04 8790 <1 321 <0.01 <1 40.9 112 1.8 <0.2 220 0.524 CMW-7 01/12/2016 6.1 9.60 13 228 0.3 1 206 8 3 <1 <1 327 <1 <50 <0.03 <1 4.59 9250 <1 319 0.027 <1 40.7 119 1.4 <0.2 230 0.626 CMW-7 03/03/2016 6.3 11.52 16 369 0.26 70 275 8.5 3 <1 <1 342 <1 <50 NA <5 5.09 6500 <1 292 <0.023 <1 37 113 1.9 <0.2 210 0.351 CMW-7 06/07/2016 5.9 15.25 20 472 0.15 -18 187 7.26 NM <1 <1 196 <1 <50 NA <5 8.21 10000 <1 363 0.04 <1 56.3 124 1.2 <0.2 250 0.613 CMW-8 03/14/2012 5.2 19.48 19 166 3.22 -58 147 2.87 NM <0.5 <5 99.5 NA 754 NA <5 NA 126 <5 51.1 NA <10 NA NA 32.3 <0.1 127 NA CMW-8 DUP 03/14/2012 5.2 19.48 19 166 3.22 -58 147 2.87 NM <0.5 <5 98.5 NA 759 NA <5 NA 91.5 <5 50.6 NA <10 NA NA 32.3 <0.1 119 NA CMW-8 03/07/2013 5.4 16.32 15 253 0.59 131 336 7.75 NM <1 <1 113 NA 1170 NA <5 NA 898 <1 2340 NA <1 NA NA 44 <0.2 160 NA CMW-8 06/05/2013 4.4 20.08 19 103 5.56 108 313 3.74 NM <1 <1 40 NA 185 NA <5 NA 290 <1 142 NA <1 NA NA 19 <0.2 76 NA CMW-8 10/11/2013 5.1 19.94 18 105 3.83 302 507 6.74 NM <1 <1 40 NA 133 NA <5 NA 428 <1 117 NA <1 NA NA 16 <0.2 72 NA CMW-8 03/10/2014 5.2 11.35 17 157 2.16 194 399 9.24 NM <1 <1 62 NA 501 NA <5 NA 5990 <1 675 NA <1 NA NA 28 <0.2 100 NA CMW-8 06/11/2014 5.1 18.58 20 104 4.44 249 454 2 NM <1 <1 40 NA 127 NA <5 NA 95 <1 160 NA <1 NA NA 18 <0.2 82 NA CMW-8 10/17/2014 5.1 14.70 19 116 3.03 202 407 1.12 NM <1 <1 42 NA 255 NA <5 NA 301 <1 128 NA <1 NA NA 19 <0.2 71 NA CMW-8 03/03/2015 5.3 11.10 12 121 3.24 196 401 2.11 NM <1 <1 44 NA 319 NA <5 NA 375 <1 132 0.09 <1 NA NA 22 <0.2 83 NA CMW-8 06/09/2015 4.5 20.06 18 98 5.27 293 498 3.16 NM <1 <1 44 <1 106 NA <5 <1 127 <1 44 0.09 <1 9.55 NA 16 <0.2 74 NA CMW-8 DUP 06/09/2015 4.5 20.06 18 98 5.27 293 498 3.16 NM <1 <1 44 <1 105 NA <5 <1 103 <1 44 0.1 <1 9.47 NA 19 <0.2 72 NA CMW-8 10/06/2015 5.1 13.03 17 162 1.6 289 494 0.48 NM <1 <1 70 <1 682 NA <5 <1 <10 <1 116 0.06 <1 14 84 31 <0.2 110 <0.3 CMW-8 12/05/2015 5.5 15.04 15 337 0.88 139 344 2.02 0.5 <0.5 <0.5 73 <0.2 730 0.031 0.54 10.7 700 <0.1 730 0.079 <0.5 15.6 94 26 <0.1 <25 <1 CMW-8 01/11/2016 5.7 6.25 16 231 0.62 60 265 3.66 0.5 <1 <1 86 <1 932 <0.03 <1 11.6 9850 <1 1000 0.016 <1 17.2 120 37 <0.2 140 1.04 CMW-8 03/03/2016 5.9 10.82 15 110 2.95 19 224 1.9 0 <1 <1 46 <1 219 NA <5 2.63 553 <1 218 0.07 <1 10 54 23 <0.2 82 0.76 CMW-8 06/07/2016 5.1 17.15 18 87 4.99 248 453 7.45 NM <1 <1 38 <1 123 NA <5 1.03 914 <1 53 0.11 <1 8.36 40 20 <0.2 61 0.93 CMW-10 12/15/2010 6.7 13.24 12 458 NM NM NM 850 NM <0.5 12 329 NA 119 NA 50.3 NA 33600 10.9 565 NA <10 NA NA 50.7 <0.1 408 NA CMW-10 03/03/2011 6.2 12.11 12 846 3.3 172 377 8 NM <0.5 <5 120 NA 85 NA 9.8 NA 356 <5 70.9 NA <10 NA NA 74.5 <0.1 498 NA CMW-10 06/08/2011 5.4 13.99 21 432 0.79 -18 187 4.63 NM <0.5 <5 77.3 NA <50 NA <5 NA 481 <5 610 NA <10 NA NA 36.3 <0.1 303 NA CMW-10 10/05/2011 6.3 14.41 19 620 1.1 -40 165 6.81 NM <0.5 <5 89.1 NA 86.2 NA <5 NA 8570 <5 551 NA <10 NA NA 92.5 <0.1 392 NA CMW-10 03/14/2012 6.6 12.55 21 583 0.5 -43 162 20 NM <0.5 <5 98.3 NA 100 NA 20.2 NA 3020 <5 642 NA <10 NA NA 28.2 <0.1 342 NA CMW-10 06/13/2012 6.4 13.91 19 630 1.13 -48 157 8.34 NM <0.5 <5 95 NA 86.9 NA <5 NA 4980 <5 469 NA <10 NA NA 42.4 <0.1 353 NA CMW-10 10/17/2012 6.6 14.87 18 763 0.71 -71 134 42.3 NM <0.5 <5 152 NA 120 NA <5 NA 12900 <5 732 NA <10 NA NA 107 <0.1 434 NA CMW-10 03/07/2013 6.8 11.48 14 620 0.42 13 218 19.3 NM <1 <1 95 NA 94 NA <5 NA 1970 <1 492 NA <1 NA NA 55 <0.2 360 NA CMW-10 06/05/2013 6.6 14.22 18 699 0.67 32 237 37.1 NM <1 <1 118 NA 102 NA <5 NA 4490 <1 414 NA <1 NA NA 62 <0.2 400 NA CMW-10 10/11/2013 5.7 13.58 18 498 0.87 116 321 37.1 NM <1 <1 57 NA 56 NA <5 NA 5060 <1 212 NA <1 NA NA 85 <0.2 320 NA CMW-10 DUP 10/11/2013 5.7 13.58 18 498 0.87 116 321 37.1 NM <1 <1 62 NA 55 NA <5 NA 7580 <1 264 NA <1 NA NA 84 <0.2 330 NA CMW-10 03/10/2014 5.3 6.40 14 367 3.58 259 464 9.32 NM <1 <1 41 NA <50 NA <5 NA 2510 <1 75 NA <1 NA NA 89 <0.2 260 NA CMW-10 06/12/2014 5.1 11.99 18 235 2.49 287 492 8.7 NM <1 <1 32 NA <50 NA <5 NA 324 <1 31 NA <1 NA NA 56 <0.2 210 NA CMW-10 10/17/2014 5.1 10.33 20 279 0.39 240 445 9.69 NM <1 <1 50 NA <50 NA <5 NA 856 <1 74 NA <1 NA NA 61 <0.2 220 NA CMW-10 03/03/2015 5.3 6.06 10 244 3.8 311 516 30.4 NM <1 <1 1 37 NA <50 NA <5 NA 1 1500 <1 39 0.03 <1 NA NL___L 67 <0.2 210 NA P:\Duke Energy Progress.1026\104. Lee Ash Basin GW Assessment\19.EG_CSASUP\tables\Table 1-2 Surficial Groundwater Exceedances.xlsx Page 4 of 9 TABLE 1-2 SURFICIAL GROUNDWATER EXCEEDANCES H.F. LEE ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, GOLDSBORO, NC Analytical Parameter pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Barium Beryllium Boron Chromium (VI) Chromium Cobalt Iron Lead Manganese Nitrate (as N) 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 ug/L ug/L ug/L ug/L ug/L ug/L mg-N/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* 10 700 4* 700 0.07^ 10 1* 300 15 SO 10 20 NE NE 250 0.2* 500 0.3* Sample ID Sample Collection Date Field Parameters Analytical Results CMW-10 06/08/2015 5.3 13.41 19 219 1.04 96 301 25.1 1 <1 <1 49 <1 <50 NA <5 5.07 3990 1.13 Sl <0.023 <1 37.3 NA 55 <0.2 220 NA CMW-10 10/06/2015 6.1 11.37 18 473 0.4 11 216 5.53 NM <1 <1 90 <1 59 NA <5 7.48 6890 <1 238 <0.023 <1 53.7 132 57 <0.2 190 <0.3 CMW-10 12/04/2015 5.6 11.37 14 495 2.6 164 369 24.2 0 <1 <1 51 <1 <50 <0.03 3.07 4.48 2090 <1 68 <0.01 <1 38.6 41 57 <0.2 200 0.987 CMW-10 02/01/2016 5.5 8.37 18 257 5.3 205 410 33.1 0 <1 <1 57 <1 <50 0.033 <1 7.41 1300 1.2 59 0.055 <1 37.6 32 61 <0.2 270 1.76 CMW-10 03/02/2016 6.1 13.00 13 425 0.5 65 270 24.5 0.5 <1 <1 89 <1 <50 NA <5 5.09 2480 <1 210 <0.023 <1 56.1 100 59 <0.2 270 0.63 CMW-10 06/07/2016 6.4 11.69 19 536 0.45 -62 143 7.94 NM <1 <1 93 <1 67 NA 8 2.35 3420 <1 186 0.03 <1 56.6 128 56 <0.2 280 0.314 LLMW-01S 05/27/2015 7.1 4.78 21 258 0.49 -49 156 0.11 1 <1 <1 84 <1 66 NA <1 2.56 942 <1 1320 0.03 <1 26.4 250 0.21 0.261 120 <0.3 LLMW-01S 06/15/2015 6.6 4.56 20 259 0.59 223 428 2.11 1 <1 <1 77 <1 57 NA <1 2.25 923 <1 1420 <0.01 <1 27.4 252 0.17 <0.2 130 <0.3 LLMW-01S 12/07/2015 6.8 3.49 16 251 1.1 -18 187 0.89 0 <0.5 <0.5 70 <0.2 72 <0.03 <0.5 1.9 680 <0.1 1300 0.26 <0.5 28.4 250 <1 <0.1 126 <1 LLMW-01S 01/12/2016 6.8 2.75 16 250 0.22 -12 193 0.81 0.5 <1 <1 72 <1 59 <0.03 <1 2.08 736 <1 1350 <0.01 <1 28.1 252 0.19 <0.2 140 <0.3 LLMW-02S 05/27/2015 7.1 7.40 27 437 0.95 -112 93 47.3 0.5 <1 46.1 1910 <1 124 NA <1 15.6 8270 <1 10S00 0.022 <1 26.2 705 1.7 <0.2 230 0.413 LLMW-02S 06/15/2015 6.5 8.26 24 457 0.67 -76 129 2.72 5 <1 64.6 1920 <1 135 NA <1 13.8 7850 <1 10800 <0.01 <1 27 703 2 <0.2 250 <0.3 MW-1 07/12/2007 NM NM NM NM NM NM NM NM NM <0.21 11 365 4.1 221 NA 11.9 NA 11800 31.5 81 0.155 3 NA NA 22.5 0.27 993.0001 NA MW-1 12/21/2007 NM NM NM NM NM NM NM NM NM <0.3 440 215 0.13 979 NA 1.2 NA 9140 0.68 273 <0.05 0.58 NA NA 39.6 0.056 226 NA MW-1 04/29/2008 NM NM NM NM NM NM NM NM NM 3.2 123 144 0.11 508 NA 17.4 NA 5390 0.86 169 <0.05 1.4 NA NA 30.7 0.07 167 NA MW-1 11/17/2008 NM NM NM NM NM NM NM NM NM 0.42 44 195 0.066 856 NA 0.73 NA 3630 0.18 206 <0.25 1.5 NA NA 69 0.07 241 NA MW-1 06/02/2009 NM NM NM NM NM NM NM NM NM <2 48.7 144 <1 301 NA 4.8 NA 4870 1.6 156 2.7 <5 NA NA 29 <1 200 NA MW-1 10/20/2009 NM NM NM NM NM NM NM NM NM <2 17.5 158 <1 1210 NA 2.6 NA 1430 <1 173 <0.05 <5 NA NA 56 <1 266 NA M W-1 04/27/2010 NM NM NM NM NM NM NM NM NM 39 54 140 <4 230 NA <5 NA 6000 <10 160 1.8 <10 NA NA 40 <50 130 NA MW-1 09/27/2013 6.3 NM 22 484 0.27 47 NM 35.4 NM <034 243 246 NA 1410 NA 1.7 j NA 4990 0.91 j 330 <0.25 0.87 j 25 NA 7.7 <0.15 289 NA MW-1 12/05/2015 6.0 5.34 15 240 0.3 51 256 9.68 0 <0.5 11.8 130 <0.2 260 <0.03 <0.5 2 780 0.34 130 2.5 <0.5 13.5 480 14.8 <0.1 67 9.2 MW-1 01/11/2016 6.1 5.60 14 201 0.61 100 305 5.96 NM <1 6.61 121 <1 216 0.05 <1 1.13 334 <1 83 1.8 <1 12.7 374 18 <0.2 120 6.08 MW-1 03/02/2016 6.1 5.61 14 194 1.07 52 257 9.5 NM <1 11.4 109 <1 148 0.039 <1 1.63 714 <1 73 2.1 <1 11.4 291 18 <0.2 120 10.3 MW-1 06/07/2016 5.8 5.81 22 186 0.2 157 362 6.52 0 <1 4.48 114 <1 107 <0.03 <1 2.55 248 <1 81 2.2 <1 10.6 219 19 <0.2 120 5.33 MW-1 08/04/2016 5.6 5.73 24 167 0.24 225 430 9.56 0 <1 4.7 96 <1 89 0.036 1.04 1.43 294 <1 56 1.9 <1 10.3 150 16 <0.2 110 6.1 MW-2 07/12/2007 NM NM NM NM NM NM NM NM NM <0.21 2.8 102 0.69 497 NA 3.1 NA 8930 4.7 731 0.05 1.4 NA NA 26.4 0.031 158 NA MW-2 12/21/2007 NM NM NM NM NM NM NM NM NM <0.3 1.2 141 0.062 756 NA 0.089 NA 11500 0.091 1760 0.76 0.43 NA NA 51.9 0.008 174 NA MW-2 04/29/2008 NM NM NM NM NM NM NM NM NM 1.4 <0.33 105 <0.086 575 NA 9.7 NA 5180 0.22 1520 0.905 0.98 NA NA 50.8 <0.068 200 NA MW-2 11/17/2008 NM NM NM NM NM NM NM NM NM 0.093 0.96 155 <0.051 78S NA 0.35 NA 8810 0.032 1910 <0.25 2 NA NA 63 <0.011 220 NA MW-2 06/02/2009 NM NM NM NM NM NM NM NM NM <2 <1 82.9 <1 536 NA 2.1 NA 4830 <1 801 0.46 <5 NA NA 34 <1 197 NA MW-2 10/20/2009 NM NM NM NM NM NM NM NM NM <2 <1 95.5 <1 678 NA 2.3 NA 4090 <1 1370 0.51 <5 NA NA 51 <1 174 NA MW-2 04/27/2010 NM NM NM NM NM NM NM NM NM 37 <10 62 <4 320 NA <5 NA 1500 <10 330 0.3 <10 NA NA 29 <50 100 NA MW-2 09/26/2013 5.8 NM 19 214 0.31 129 NM 14.9 NM <0.34 <0.42 96.1 NA 575 NA <1.6 NA 1650 <0.085 952 12 <0.5 23.7 NA 38.1 <0.15 154 NA MW-3 07/12/2007 NM NM NM NM NM NM NM NM NM <0.21 84.8 299 5.7 1700 NA 9.2 NA 19000 43 1280 0.05 3.8 NA NA 75.2 0.16 624 NA MW-3 12/21/2007 NM NM NM NM NM NM NM NM NM <0.3 98.6 92.8 <0.051 1440 NA <0.059 NA 4620 0.058 1150 2.02 0.75 NA NA 59.8 0.03 420 NA MW-3 04/29/2008 NM NM NM NM NM NM NM NM NM 1 197 138 <0.086 1660 NA 7.9 NA 7960 <0.05 1430 <0.05 0.98 NA NA 109 <0.068 561 NA MW-3 11/17/2008 NM NM NM NM NM NM NM NM NM 0.049 46.2 84.2 <0.051 1370 NA 0.11 NA 3140 0.067 835 <0.25 2.7 NA NA 90.00001 0.013 423 NA MW-3 06/02/2009 NM NM NM NM NM NM NM NM NM <2 301 126 <1 1730 NA <2 NA 8580 <1 1510 <0.05 <5 NA NA 71 <1 535 NA M W-3 10/20/2009 NM NM NM NM NM NM NM NM NM <2 357 184 <1 1570 NA 2.2 NA 9960 <1 1650 <0.05 <5 NA NA 69 <1 455 NA M W-3 04/27/2010 NM NM NM NM NM NM NM NM NM 42 350 200 <4 1700 NA <5 NA 11000 <10 1600 0.069 <10 NA NA 72 <50 410 NA MW-3 09/30/2013 6.8 NM 21 581 0.6 -92 NM 6.2 NM <0.34 442 202 NA 1560 NA <1.6 NA 16300 <0.085 1510 <0.25 <0.5 31.8 NA 16.9 <0.15 396 NA MW-3 06/11/2015 6.9 13.72 20 956 0.22 -155 50 15.1 3 <1 445 355 <1 2240 NA <1 5.61 28200 <1 2000 <0.01 <1 32.8 4160 58 <0.2 510 0.305 MW-3 12/04/2015 7.0 13.21 17 1841 0.2 -147 58 21.7 0 <1 683 535 <1 2150 <0.03 <1 6.24 34400 <1 1940 0.056 <1 33 4460 46 <0.2 550 <0.3 MW-3 01/11/2016 7.4 9.62 16 1804 0.59 140 345 4.26 NM <1 614 576 <1 2360 <0.03 <1 8.06 38100 <1 2260 0.018 <1 33.8 4720 50 <0.2 570 <0.3 MW-4 07/12/2007 NM NM NM NM NM NM NM NM NM <0.21 1.7 929 8.1 66.8 NA 19.1 NA 22100 47.2 1010 0.05 3.5 NA NA 3.86 0.27 391 NA MW-4 12/21/2007 NM NM NM NM NM NM NM NM NM <0.3 0.47 271 <0.051 103 NA <0.59 NA 4710 0A 187 <0.05 <0.3 NA NA 9.67 <0.007 251 NA MW-4 04/29/2008 NM NM NM NM NM NM NM NM NM 0.79 <0.33 255 0.12 112 NA 9.2 NA 10600 0.11 215 <0.05 <0.63 NA NA 44.3 <0.068 361 NA MW-4 11/17/2008 NM NM NM NM NM NM NM NM NM <0.017 0.34 251 0.094 104 NA 0.42 NA 5000 0.32 129 <0.25 0.98 NA NA 21 <0.011 288 NA MW-4 06/02/2009 NM NM NM NM NM NM NM NM NM <2 1.2 191 <1 <200 NA 4.9 NA 8460 3.4 704 <0.05 <5 NA NA 71 <1 495 NA MW-4 10/20/2009 NM NM NM NM NM NM NM NM NM <2 <1 243 <1 <200 NA 2.2 NA 4940 1 1.1 195 <0.05 <5 NA NA 20 <1 311 NA P:\Duke Energy Progress.1026\104. Lee Ash Basin GW Assessment\19.EG_CSASUP\tables\Table 1-2 Surficial Groundwater Exceedances.xlsx Page 5 of 9 TABLE 1-2 SURFICIAL GROUNDWATER EXCEEDANCES H.F. LEE ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, GOLDSBORO, NC Analytical Parameter pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Barium Beryllium Boron Chromium (VI) Chromium Cobalt Iron Lead Manganese Nitrate (as N) 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 ug/L ug/L ug/L ug/L ug/L ug/L mg-N/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* 10 700 4* 700 0.07^ 10 1* 300 15 SO 10 20 NE NE 250 0.2* 500 0.3* Sample ID Sample Collection Date Field Parameters Analytical Results M W-4 04/27/2010 NM NM NM NM NM NM NM NM NM 21 <10 190 <4 80 NA <5 NA 10000 <10 500 0.066 <10 NA NA 61 <50 380 NA MW-4 09/27/2013 6.2 NM 18 0 0.64 35 NM 364 NM <0.34 1.4 j 201 NA 91.8 NA 14.2 j NA 8880 5.3 256 <0.25 <0.5 50.5 NA 14.3 <0.15 275 NA Inactive Ash Basin BW-1 10/06/2011 5.5 6.79 18 320 3.6 -58 147 0.8 NM <0.5 <5 86.6 NA 543 NA <5 NA 745 <5 1130 NA <10 NA NA 84.1 <0.1 201 NA BW-1 03/15/2012 5.2 5.44 15 266 0.44 -74 131 26.8 NM <0.5 <5 27.8 NA 321 NA <5 NA 3310 <5 888 NA <10 NA NA 81.4 <0.1 192 NA BW-1 06/14/2012 5.8 6.93 19 327 1.27 -57 148 8.83 NM <0.5 <5 27.4 NA 508 NA <5 NA 10900 <5 776 NA <10 NA NA 101 <0.1 174 NA BW-1 10/18/2012 5.9 7.43 19 362 0.8 -9 196 24.7 NM <0.5 <5 34 NA 246 NA <5 NA 26700 <5 1110 NA <10 NA NA 113 <0.1 237 NA BW-1 03/06/2013 5.4 5.58 11 309 0.45 96 301 30 NM <1 <1 28 NA 291 NA <5 NA 7400 <1 785 NA 5.48 NA NA 99 <0.2 190 NA BW-1 06/05/2013 5.9 7.07 18 345 0.36 NM NM 8.4 NM <1 <1 26 NA 426 NA <5 NA 10600 <1 887 NA 3.81 NA NA 83 <0.2 200 NA BW-1 10/10/2013 6.1 6.90 18 402 0.51 3 208 9.77 NM <1 <1 37 NA 328 NA <5 NA 22200 <1 1370 NA <1 NA NA 110 <0.2 260 NA BW-1 03/11/2014 5.5 4.90 13 295 0.43 150 355 27.2 NM <1 <1 28 NA 330 NA <5 NA 2210 <1 688 NA 14.8 NA NA 100 <0.2 190 NA BW-1 06/12/2014 5.9 6.68 20 538 0.36 47 252 21 NM <1 <1 49 NA 588 NA <5 NA 13400 <1 1460 NA 42.1 NA NA 180 <0.2 410 NA BW-1 10/15/2014 5.3 6.71 18 540 0.3 1 206 10 NM <1 <1 53 NA 541 NA <5 NA 33100 <1 1170 NA 16.5 NA NA 190 <0.2 410 NA BW-1 03/02/2015 5.9 4.59 14 633 0.2 66 271 45.2 NM <1 <1 48 NA 709 NA <5 NA 13500 <1 824 NA 3.53 NA NA 190 <0.2 400 NA BW-1 06/08/2015 5.9 6.63 19 712 0.31 2 207 25.1 5 <1 <1 55 <1 862 NA <5 2.35 18500 <1 599 <0.023 2.11 17.2 NA 180 <0.2 480 NA BW-1 10/05/2015 6.1 6.90 19 599 4.7 56 261 9.98 NM <1 <1 40 <1 751 NA <5 <1 3930 <1 182 0.06 8.04 16.8 1710 200 <0.2 400 <0.3 BW-1 DUP 10/05/2015 6.1 6.90 19 599 4.7 56 261 9.98 NM <1 <1 40 <1 754 NA <5 <1 4060 <1 185 0.05 7.79 17 1710 200 <0.2 420 <0.3 BW-1 12/06/2015 6.2 6.01 16 604 1 -3 202 9.8 3.5 <0.5 <0.5 40 <0.2 740 <0.03 <0.5 3.4 5100 <0.1 570 0.044 5.9 19.1 1700 179 <0.1 410 <1 BW-1 01/12/2016 6.1 5.34 15 510 0.71 36 241 7.97 1 <1 <1 38 <1 681 <0.03 2.82 1.1 4150 <1 382 0.054 2.02 13.1 1450 150 <0.2 330 <0.3 BW-1 03/02/2016 6.1 4.70 13 373 1.5 79 284 8.7 NM <1 <1 25 <1 518 NA <5 <1 1080 <1 181 0.25 3.66 9.3 993 87 <0.2 240 <0.3 BW-1 DUP 03/02/2016 6.1 4.70 13 373 1.5 79 284 8.7 NM <1 <1 25 <1 517 NA <5 <1 1220 <1 199 0.25 3.74 9.27 982 89 <0.2 240 <0.3 BW-1 06/06/2016 6.1 5.64 19 535 0.24 -21 184 9.9 NM <1 <1 44 <1 861 NA <5 3.87 7550 <1 540 0.03 3.46 12.5 1490 100 <0.2 310 <0.3 BW-1 DUP 06/06/2016 6.1 5.64 19 535 0.24 -21 184 9.9 NM <1 <1 44 <1 851 NA <5 3.74 7770 <1 542 0.03 3.97 12.4 1470 100 <0.2 300 <0.3 CW-1 03/15/2012 6.2 13.00 19 228 3.4 -77 128 15.9 NM <0.5 <5 27.6 NA <50 NA <5 NA 3260 <5 494 NA <10 NA NA <5 <0.1 1900 NA CW-1 06/14/2012 6.1 13.61 17 259 0.64 -41 164 8.7 NM <0.5 <5 27.4 NA <50 NA <5 NA 8S40 <5 478 NA <10 NA NA 5.5 <0.1 144 NA CW-1 10/18/2012 6.3 14.96 20 217 0.9 1 206 24.2 NM <0.5 <5 30.4 NA <50 NA <5 NA 6020 <5 341 NA <10 NA NA 4.5 <0.1 126 NA CW-1 03/06/2013 6.2 11.86 13 256 0.89 80 285 40.4 NM <1 <1 28 NA <50 NA <5 NA 3180 <1 335 NA <1 NA NA 5.6 <0.2 150 NA CW-1 06/06/2013 6.1 13.70 19 298 0.37 NM NM 48.3 NM <1 <1 31 NA <50 NA <5 NA 4140 <1 458 NA <1 NA NA 5.8 <0.2 170 NA CW-1 10/10/2013 6.2 13.85 18 385 0.39 53 258 1000 NM <1 1.95 154 NA <50 NA 30 NA 30000 16.8 496 NA 2.18 NA NA 20 <0.2 450 NA CW-1 03/11/2014 6.3 6.60 18 599 0.54 121 326 25 NM <1 <1 69 NA <50 NA <5 NA 3350 <1 339 NA <1 NA NA 28 <0.2 330 NA CW-1 06/12/2014 6.2 11.90 19 766 0.22 45 250 9.7 NM <1 <1 92 NA <50 NA <5 NA 3600 <1 399 NA <1 NA NA 34 <0.2 460 NA CW-1 10/15/2014 5.5 11.85 18 502 1.5 81 286 891 NM <1 2.7 148 NA <50 NA 27 NA 27300 19.8 230 NA <1 NA NA 31 <0.2 420 NA CW-1 03/02/2015 6.2 5.85 14 738 0.91 135 340 40.2 NM <1 <1 83 NA <50 NA <5 NA 1680 <1 207 NA <1 NA NA 32 <0.2 410 NA CW-1 06/08/2015 6.6 12.26 20 819 0.35 -6 199 68.4 1 <1 2.05 192 1.34 <50 NA 17 8.56 20900 11.1 481 0.22 <1 96.2 NA 29 <0.2 700 NA CW-1 10/05/2015 6.3 13.81 18 438 0.6 -50 155 9.96 NM <1 <1 54 <1 <50 NA <5 2.79 8230 <1 409 0.04 <1 46.6 102 14 0.349 240 0.652 CW-1 12/06/2015 6.3 11.74 16 412 0.3 -37 168 6.36 3 <0.5 <0.5 46 <0.2 <50 <0.03 <0.5 1.9 6500 0.16 350 <0.02 <0.5 41.9 97 10.7 <0.1 229 <1 CW-1 01/13/2016 6.2 5.54 11 411 0.22 76 281 53.3 1 <1 <1 51 <1 <50 <0.03 <1 2.39 8460 <1 430 0.148 <1 42.5 106 8.3 <0.2 230 0.311 CW-1 03/03/2016 6.2 5.20 15 262 0.84 101 206 23.3 2.5 <1 <1 50 <1 <50 NA <5 2.61 3930 <1 308 <0.023 <1 22.5 75 4.5 <0.2 160 1.43 CW-1 06/06/2016 6.2 11.15 22 400 0.2 -13 192 9.9 NM <1 <1 55 <1 <50 NA <5 6.26 6800 <1 433 <0.023 <1 43.2 95 11 <0.2 220 0.692 CW-2 10/06/2011 5.8 15.35 19 172 2.34 23 228 6 NM <0.5 <5 33.9 NA <50 NA <5 NA 3250 <5 172 NA <10 NA NA <5 <0.1 105 NA CW-2 03/15/2012 6.0 14.18 19 195 1.5 -82 123 15.3 NM <0.5 <5 27.1 NA <50 NA <5 NA 10000 <5 187 NA <10 NA NA <5 <0.1 160 NA CW-2 06/14/2012 6.1 14.61 17 222 0.7 -45 160 16 NM <0.5 <5 26.3 NA <50 NA <5 NA 16700 <5 197 NA <10 NA NA 3.3 <0.1 141 NA CW-2 10/18/2012 6.2 15.40 20 229 0.8 -48 157 7.56 NM <0.5 <5 20.8 NA <50 NA <5 NA 17500 <5 205 NA <10 NA NA 3.9 <0.1 134 NA CW-2 03/06/2013 6.0 12.68 14 202 0.58 10 215 28.4 NM <1 <1 28 NA <50 NA <5 NA 11000 <1 199 NA <1 NA NA 2.4 <0.2 120 NA CW-2 06/06/2013 6.1 14.70 18 225 0.17 NM NM 30.9 NM <1 <1 26 NA <50 NA <5 NA 12700 <1 294 NA <1 NA NA 1.9 <0.2 130 NA CW-2 10/10/2013 6.3 14.65 17 222 0.2 -37 168 19.5 NM <1 <1 30 NA <50 NA <5 NA 15900 <1 257 NA <1 NA NA 4.2 <0.2 140 NA CW-2 DUP 10/10/2013 6.3 14.65 17 222 0.2 -37 168 19.5 NM <1 <1 30 NA <50 NA <5 NA 15100 <1 246 NA <1 NA NA 4.2 <0.2 140 NA CW-2 03/11/2014 6.1 7.59 19 232 0.14 34 239 45.9 NM <1 <1 29 NA <50 NA <5 NA 11900 <1 319 NA <1 NA NA 4.2 <0.2 140 NA CW-2 06/12/2014 6.0 13.13 18 330 0.42 26 231 9.2 NM <1 <1 26 NA <50 NA <5 NA 8610 <1 445 NA <1 NA NA 8.9 <0.2 200 NA CW-2 10/15/2014 5.6 13.16 18 258 0.26 -30 175 21.2 NM <1 <1 23 NA <50 NA <5 NA 19200 <1 265 NA <1 NA NA 4.2 <0.2 150 NA P:\Duke Energy Progress.1026\104. Lee Ash Basin GW Assessment\19.EG_CSASUP\tables\Table 1-2 Surficial Groundwater Exceedances.xlsx Page 6 of 9 TABLE 1-2 SURFICIAL GROUNDWATER EXCEEDANCES H.F. LEE ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, GOLDSBORO, NC Analytical Parameter pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Barium Beryllium Boron Chromium (VI) Chromium Cobalt Iron Lead Manganese Nitrate (as N) 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 ug/L ug/L ug/L ug/L ug/L ug/L mg-N/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* 10 700 4* 700 0.07^ 10 1* 300 15 SO 10 20 NE NE 250 0.2* 500 0.3* Sample ID Sample Collection Date Field Parameters Analytical Results CW-2 03/02/2015 6.2 6.55 15 243 0.15 15 220 34.6 NM <1 <1 23 NA <50 NA <5 NA 12300 <1 300 NA <1 NA NA 4 <0.2 140 NA CW-2 06/08/2015 6.9 13.38 19 313 0.32 -40 165 27.6 4.5 <1 <1 23 <1 <50 NA <5 7.85 14800 <1 298 <0.023 <1 40.8 NA 6.1 <0.2 170 NA CW-2 DUP 06/08/2015 6.9 13.38 19 313 0.32 -40 165 27.6 4.5 <1 <1 23 <1 <50 NA <5 7.66 1S000 <1 285 <0.023 <1 38.1 NA 5.6 <0.2 160 NA CW-2 10/05/2015 6.1 12.65 17 213 1.3 16 221 181 NM <10 <10 64 <10 <50 NA 14 <10 24300 <10 247 <0.023 <10 29 47 4.6 <2 380 18.5 CW-2 12/06/2015 6.2 11.70 17 218 0.4 -35 170 9.21 3.5 <0.5 <0.5 26 <0.2 <50 <0.03 <0.5 6 16100 <0.1 190 <0.02 <0.5 25.2 34 3.5 <0.1 144 <1 CW-2 01/13/2016 6.2 6.13 16 196 0.95 12 217 9.42 2 <1 <1 28 <1 <50 <0.03 10.9 7.26 16300 <1 198 0.068 <1 20.9 32 2.8 <0.2 110 <0.3 CW-2 03/03/2016 6.2 6.53 15 203 0.93 -8 197 11 7 <1 <1 28 <1 <50 NA <5 8.29 12400 <1 205 <0.023 <1 23.9 34 3.4 <0.2 140 <0.3 CW-2 06/07/2016 6.2 11.75 19 284 0.4 37 242 20.3 NM <1 <1 31 <1 <50 NA <5 12.4 15000 <1 351 <0.023 <1 29.5 38 4.2 <0.2 140 <0.3 CW-3 10/06/2011 5.9 12.10 19 448 0.55 31 236 2.78 NM <0.5 <5 84.9 NA 792 NA <5 NA 5S60 <5 1890 NA <10 NA NA 57.9 <0.1 284 NA CW-3 DUP 10/06/2011 5.9 12.10 19 448 0.55 31 236 2.78 NM <0.5 <5 84.9 NA 798 NA <5 NA 5400 <5 1850 NA <10 NA NA 57.4 <0.1 274 NA CW-3 03/15/2012 6.1 10.85 20 578 2.3 -75 130 12 NM <0.5 <5 65.5 NA 947 NA <5 NA 8030 <5 1900 NA <10 NA NA 74.1 <0.1 360 NA CW-3 06/14/2012 6.0 11.09 18 497 0.69 -71 134 9.32 NM <0.5 <5 52.6 NA 672 NA <5 NA 9380 <5 1890 NA <10 NA NA 59.7 <0.1 305 NA CW-3 DUP 06/14/2012 6.0 11.09 18 497 0.69 -71 134 9.32 NM <0.5 <5 51.4 NA 649 NA <5 NA 9660 <5 1850 NA <10 NA NA 64.6 <0.1 302 NA CW-3 10/18/2012 6.1 12.10 20 550 0.48 8 213 18.5 NM <0.5 <5 55.1 NA 785 NA <5 NA 12000 <5 2070 NA <10 NA NA 71.4 <0.1 317 NA CW-3 03/06/2013 S.8 9.63 13 373 0.38 32 237 16.7 NM <1 <1 42 NA 414 NA <5 NA 28600 <1 3080 NA <1 NA NA 49 <0.2 210 NA CW-3 DUP 03/06/2013 5.8 9.63 13 373 0.36 32 237 16.7 NM <1 <1 42 NA 410 NA <5 NA 28900 <1 3100 NA <1 NA NA 49 <0.2 210 NA CW-3 06/06/2013 6.0 11.05 18 518 0.29 NM NM 24.3 NM <1 <1 57 NA 778 NA <5 NA 5160 <1 1780 NA 1.23 NA NA 58 <0.2 300 NA CW-3 10/10/2013 5.9 10.74 18 310 0.35 220 425 I11 NM <1 <1 50 NA 463 NA <5 NA 5370 1.32 224 NA 1.17 NA NA 38 <0.2 220 NA CW-3 03/11/2014 5.9 3.99 16 430 0.29 128 333 8.53 NM <1 <1 55 NA 561 NA <5 NA 1710 <1 580 NA <1 NA NA 51 <0.2 260 NA CW-3 DUP 03/11/2014 5.9 3.99 16 430 0.29 128 333 8.53 NM <1 <1 56 NA 564 NA <5 NA 1840 <1 590 NA <1 NA NA 50 <0.2 260 NA CW-3 06/12/2014 5.9 8.94 19 259 1.99 196 401 35 NM <1 <1 35 NA 323 NA <5 NA 1630 <1 266 NA <1 NA NA 27 <0.2 160 NA CW-3 10/15/2014 5.4 9.81 18 280 0.32 125 330 211 NM <1 <1 55 NA 349 NA <5 NA 13400 2.44 609 NA <1 NA NA 28 <0.2 250 NA CW-3 03/02/2015 6.0 3.39 13 303 0.25 175 380 18.3 NM <1 <1 36 NA 268 NA <5 NA 612 <1 407 NA <1 NA NA 25 <0.2 160 NA CW-3 06/09/2015 5.7 9.50 19 313 0.44 115 320 63.3 1.5 <1 <1 42 <1 346 NA <5 2.3 1890 <1 404 0.14 <1 15.3 NA 28 <0.2 180 NA CW-3 10/05/2015 6.0 9.41 18 311 1.69 202 407 1100 NM <10 <10 106 <10 385 NA 25 <10 27400 13.9 786 <0.023 <10 19.8 590 37 <2 710 19.7 CW-3 12/05/2015 6.0 8.61 16 329 0.4 103 308 46.1 1 <0.5 <0.5 44 <0.2 420 <0.03 0.64 11.5 4300 0.4 1100 <0.02 <0.5 14.9 540 34.5 <0.1 228 <1 CW-3 02/01/2016 6.0 5.71 18 369 0.24 76 281 9.35 1 <1 <1 52 <1 391 <0.03 <1 7.5 1220 <1 1110 <0.01 <1 17.6 501 43 <0.2 220 0.314 CW-3 03/03/2016 6.0 2.68 14 385 0.75 149 354 9.5 0.5 <1 <1 50 <1 588 NA <5 <1 561 <1 77 0.17 8.48 12.4 670 57 <0.2 260 0.811 CW-3 06/06/2016 6.0 8.53 18 341 1.5 111 316 8.1 NM <1 <1 42 <1 484 NA <5 <1 464 <1 49 0.46 12.4 11.2 747 48 <0.2 200 0.422 CW-4 10/06/2011 6.3 18.51 18 322 3.34 3 208 6.19 NM <0.5 <5 85.6 NA 51.9 NA <5 NA 6510 <5 1230 NA <10 NA NA 15.6 <0.1 193 NA CW-4 03/15/2012 6.2 16.80 19 308 0.3 -68 137 31.5 NM <0.5 <5 77.9 NA <50 NA <5 NA 9030 <5 1130 NA <10 NA NA 13.3 <0.1 204 NA CW-4 DUP 03/15/2012 6.2 16.80 19 308 0.3 -68 137 31.5 NM <0.5 <5 79.9 NA <50 NA <5 NA 9810 <5 1140 NA <10 NA NA 13.6 <0.1 181 NA CW-4 06/14/2012 6.2 17.24 18 315 0.56 -50 156 30.8 NM <0.5 <5 82.6 NA <50 NA <5 NA 9840 <5 1130 NA <10 NA NA 13.5 <0.1 184 NA CW-4 10/18/2012 6.4 18.84 19 318 0.66 -44 161 7.21 NM <0.5 <5 81.8 NA <50 NA <5 NA 13200 <5 1260 NA <10 NA NA 16.8 <0.1 192 NA CW-4 DUP 10/18/2012 6.4 18.84 19 318 0.66 -44 161 7.21 NM <0.5 <5 82.6 NA <50 NA <5 NA 13500 <5 1270 NA <10 NA NA 17.5 <0.1 191 NA CW-4 03/06/2013 6.2 14.88 14 317 0.23 11 216 47.2 NM <1 <1 89 NA <50 NA <5 NA 12900 <1 1150 NA <1 NA NA 13 <0.2 180 NA CW-4 06/06/2013 6.0 16.62 18 281 0.29 NM NM 27 NM <1 <1 81 NA <50 NA <5 NA 7140 <1 880 NA <1 NA NA 22 <0.2 170 NA CW-4 DUP 06/06/2013 6.0 16.62 18 281 0.29 NM NM 27 NM <1 <1 79 NA <50 NA <5 NA 6870 <1 846 NA <1 NA NA 22 <0.2 170 NA CW-4 10/10/2013 6.2 16.31 17 328 0.23 -6 199 24.8 NM <1 <1 89 NA <50 NA <5 NA 10600 <1 1400 NA <1 NA NA 17 <0.2 200 NA CW-4 03/11/2014 5.4 7.85 17 293 1.8 153 358 16.9 NM <1 <1 100 NA <50 NA <5 NA 2380 <1 705 NA <1 NA NA 30 <0.2 200 NA CW-4 06/12/2014 5.3 14.05 19 248 1.77 284 489 9 NM <1 <1 83 NA <50 NA <5 NA 1810 <1 333 NA <1 NA NA 32 <0.2 180 NA CW-4 DUP 06/12/2014 5.3 14.05 19 248 1.77 284 489 9 NM <1 <1 82 NA <50 NA <5 NA 1520 <1 323 NA <1 NA NA 32 <0.2 180 NA CW-4 10/16/2014 5.3 13.14 19 252 0.23 118 323 12.6 NM <1 <1 82 NA <50 NA <5 NA 2060 <1 583 NA <1 NA NA 26 <0.2 160 NA CW-4 DUP 10/16/2014 5.3 13.14 19 252 0.23 118 323 12.6 NM <1 <1 85 NA <50 NA <5 NA 2110 <1 616 NA <1 NA NA 27 <0.2 150 NA CW-4 03/03/2015 5.3 7.65 11 199 1.73 247 452 15.5 NM <1 <1 69 NA <50 NA <5 NA 901 <1 472 NA <1 NA NA 29 <0.2 130 NA CW-4 DUP 03/03/2015 5.3 7.65 11 199 1.73 247 452 15.5 NM <1 <1 71 NA <50 NA <5 NA 909 <1 481 NA <1 NA NA 27 <0.2 130 NA CW-4 06/08/2015 5.2 14.13 18 179 0.25 133 338 9.22 1.5 <1 <1 66 <1 <50 NA <5 7.02 2760 <1 531 <0.023 <1 18.7 NA 26 <0.2 120 NA CW-4 10/05/2015 6.3 16.32 17 346 0.6 -10 195 5.49 NM <1 <1 112 <1 <50 NA <5 15.2 10900 <1 1750 <0.023 <1 12.9 114 19 <0.2 210 <0.3 CW-4 12/05/2015 6.2 14.00 16 309 0.3 48 253 9.49 2.5 <0.5 <0.5 100 <0.2 <50 <0.03 <0.5 14.6 7800 <0.1 1300 <0.02 <0.5 15 97 15.1 <0.1 205 <1 CW-4 01/13/2016 5.9 6.75 14 163 3.99 -56 8 20.9 1 <1 <1 81 <1 <50 <0.03 <1 7.66 2840 <1 739 0.05 <1 16.4 80 25 <0.2 150 <0.3 P:\Duke Energy Progress.1026\104. Lee Ash Basin GW Assessment\19.EG_CSASUP\tables\Table 1-2 Surficial Groundwater Exceedances.xlsx Page 7 of 9 TABLE 1-2 SURFICIAL GROUNDWATER EXCEEDANCES H.F. LEE ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, GOLDSBORO, NC Analytical Parameter pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Barium Beryllium Boron Chromium (VI) Chromium Cobalt Iron Lead Manganese Nitrate (as N) 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 ug/L ug/L ug/L ug/L ug/L ug/L mg-N/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* 10 700 4* 700 0.07^ 10 1* 300 15 SO 10 20 NE NE 250 0.2* 500 0.3* Sample ID Sample Collection Date Field Parameters Analytical Results CW-4 DUP 01/13/2016 5.9 6.75 14 163 3.99 -56 8 20.9 1 <1 <1 82 <1 <50 <0.03 <1 7.75 3080 <1 758 0.056 <1 16.2 80 25 <0.2 160 <0.3 CW-4 03/02/2016 5.4 7.78 16 151 3.16 193 398 9.7 NM <1 <1 56 <1 <50 NA <5 1.94 880 <1 178 0.05 <1 17.7 47 28 <0.2 120 0.303 CW-4 06/07/2016 5.4 13.43 19 158 0.4 232 437 7.7 NM <1 <1 64 <1 <50 NA <5 2.78 664 <1 218 <0.023 <1 18.3 59 26 <0.2 100 <0.3 IABMW-01S 04/09/2015 6.0 0.80 18 653 1.07 25 230 10 4 <1 <1 173 <1 253 NA <1 35.6 30400 <1 5190 <0.01 <1 15.9 486 11 <0.2 370 0.361 IABMW-01S 06/10/2015 6.0 5.89 19 728 0.43 -32 173 3.77 4 <1 1.91 215 <1 226 NA <1 27.2 49100 1.42 5340 <0.01 <1 18.4 512 11 <0.2 400 <0.3 IABMW-01S 12/06/2015 6.2 6.60 16 659 0.6 -12 193 1.72 1.5 <0.5 1.9 160 <0.2 290 <0.03 <0.5 32.8 38900 <0.1 4000 <0.02 <0.5 17.2 420 8 <0.1 355 <1 IABMW-01S 01/13/2016 5.3 5.00 14 569 0.31 -29 176 9.9 2.5 <1 2.22 175 <1 279 <0.03 <1 39.5 43500 <1 4680 0.029 <1 14.7 449 8.1 <0.2 350 0.309 IABMW-02S 04/09/2015 6.0 9.46 18 762 0.24 134 339 8.03 4 <1 <1 214 <1 1550 NA <1 52.7 13400 <1 4190 0.017 <1 18.6 2620 110 <0.2 530 <0.3 IABMW-02S 06/10/2015 6.2 12.95 20 605 0.44 20 225 2.26 4 <1 6.75 231 <1 1720 NA <1 50.6 25300 <1 4740 0.042 <1 17.6 3000 98 <0.2 570 0.368 IABMW-03S 04/09/2015 6.0 9.90 18 419 0.3 -49 156 1.26 3 <1 3.67 202 <1 603 NA <1 1.36 56700 <1 1180 <0.01 <1 12.3 405 29 <0.2 240 0.616 IABMW-03S 06/10/2015 6.1 11.25 19 407 0.69 31 236 2.16 6.5 <1 4.29 221 <1 655 NA <1 1.21 58000 <1 1210 <0.01 <1 13 544 42 <0.2 30 0.743 IABMW-03S 09/24/2015 6.2 14.64 18 447 0.3 -61 144 2.57 NM <1 1.92 179 <1 563 NA <1 1.21 57500 <1 1220 NA <1 11 422 NA <0.2A 0.754 IMW-04S 07/28/2016 6.1 5.62 21 190 0.24 65 270 9.46 NM <1 27.1 170 <1 71 2.2 <1 2.16 16500 <1 328 <0.01 3.35 5.1 228 4.6 <0.210 L7go90 5.08 IMW-05S 07/29/2016 6.2 12.24 20 193 0.52 79 284 9.04 NM <1 <1 34 <1 80 2.6 <1 39.6 17500 <1 3190 <0.01 <1 10.6 112 20 <0.220 0.301 PZ-4 06/16/2015 6.6 9.22 18 1313 0.2 -97 108 4.13 3 <1 4.41 515 <1 1870 NA <1 1.46 56700 <1 473 <0.01 <1 15.5 7350 48 <0.2 0.874 PZ-4 09/30/2013 6.2 NM 18 635 1.03 4 NM 10.8 NM <0.34 1.5j 446 NA 1400 NA 1.9j NA 13600 0.12j 549 <0.25 0.64j 19 NA 62.4 0.26j 597 NA PZ-5 06/16/2015 6.4 7.40 19 1302 0.22 -16 189 3.06 2.5 1.16 31.2 284 <1 1290 NA <1 31.1 8490 <1 2070 4.9 1.52 34.5 3480 280 0.658 980 1.84 PZ-5 09/30/2013 5.6 NM 19 437 0.87 88 NM 6.62 NM <0.34 1.7 j 111 NA 96.1 NA <1.6 NA 5890 0.1 j 1310 <0.25 <0.5 64.3 NA 30.1 <0.15 313 NA PZ-6 09/27/2013 6.1 NM 18 0 1.26 11 NM 36.3 NM <0.34 21.6 127 NA 177 NA 3.7 j NA 7630 1.1 257 <0.25 <0.5 49.9 NA 43.7 0.22 j 190 NA PZ-7 09/30/2013 6.3 NM 19 0 0.75 -20 NM 6.2 NM <0.34 77.2 582 NA 321 NA <1.6 NA 25500 <0.085 464 <0.25 <0.5 19.1 NA 3.1j <0.15 225 NA PZ-8 09/30/2013 8.8 NM 19 589 2.25 125 NM 107 NM 17.2 59.9 371 NA 5570 NA <1.6 NA 581 1.5 27.1 <0.25 4.1 74.9 NA 268 <0.15 550 NA SMW-3 06/12/2015 5.6 4.93 20 3 0.59 26 231 5.87 3 <1 <1 50 <1 90 NA <1 56.4 13700 <1 2760 <0.01 <1 14.9 90 18 <0.2 150 0.323 SMW-3 09/25/2015 5.7 7.90 19 266 0.4 10 215 3.57 NM <1 3.84 76 <1 139 NA <1 78.5 16200 <1 2600 NA <1 16.1 112 NA <0.2 NA 0.349 SMW-3 12/05/2015 5.8 3.15 12 225 0.7 148 353 6.83 2.5 <0.5 0.52 69 <0.2 120 <0.03 <0.5 93.3 5400 <0.1 2400 <0.02 <0.5 15.2 100 17.7 <0.1 151 <1 SMW-3 01/13/2016 5.5 3.00 7 208 0.7 120 325 29.2 1 <1 <1 57 <1 97 <0.03 M1 <1 83.5 3360 <1 2830 0.024 <1 14.5 101 20 <0.2 150 <0.3 SMW-3 09/25/2013 5.5 NM 19 159 1.71 71 NM 7.08 NM <0.34 0.75 j 46 NA 157 NA <1.6 NA 3760 <0.085 1380 <0.25 <0.5 19.3 NA 23 <0.15 123 NA SMW-4 06/16/2015 5.8 6.41 20 199 0.4 -106 99 4.02 3.5 <1 6.02 114 <1 318 NA <1 <1 14900 <1 219 <0.01 <1 6.17 408 14 <0.2 130 3.59 SMW-4 09/25/2015 5.9 9.29 20 169 0.3 -8 197 8.58 NM <1 1.92 75 <1 168 NA 1.59 <1 23800 <1 276 NA <1 0.913 144 NA <0.2 NA 2.65 SMW-4 12/06/2015 5.9 5.28 16 770 0.2 12 217 8.85 1.5 <0.5 2.6 91 1 0.22 250 <0.03 1.1 <0.5 9500 0.25 150 <0.02 0.53 9.04 340 14.3 <0.1 b 79 4.3 SMW-4 DUP 12/06/2015 5.9 5.28 16 770 0.2 12 217 8.85 1.5 <0.5 3 88 0.26 240 <0.03 1.2 <0.5 9300 0.12 150 <0.02 0.81 9.18 330 15.4 <0.1 132 4.6 SMW-4 01/13/2016 5.9 4.40 14 194 0.18 20 225 10.75 NM <1 3.61 107 <1 283 <0.03 2.72 <1 12500 <1 199 0.054 <1 6.9 441 35 <0.2 160 6.68 SMW-4 09/26/2013 5.7 NM 20 148 0.84 -40 NM 11.1 NM <0.34 7.4 116 NA 293 NA <1.6 NA 26400 0.26j 294 <0.25 <0.5 8.08 NA 9.700001 <0.15 148 NA SMW-4 DUP 09/26/2013 5.7 NM 20 148 0.84 -40 NM 11.1 NM <0.34 7.4 113 NA 292 NA <1.6 NA 24600 0.28 j 274 <0.25 <0.5 7.38 NA 7.2 <0.15 135 NA SMW-5 12/07/2015 6.4 6.22 15 380 0.2 -47 158 13.7 2.5 <0.5 1.6 100 <0.2 200 <0.03 <0.5 10.2 49800 <0.1 780 0.038 <0.5 7.670001 250 58.8 <0.1 237 <1 SMW-5 01/13/2016 6.3 5.41 14 358 0.1 -40 165 15.9 4.5 <1 1.56 102 <1 184 <0.03 <1 11.8 51700 <1 8S7 0.03 <1 8.48 245 65 <0.2 180 <0.3 SMW-5 09/30/2013 6.4 NM 18 357 1.92 -94 NM 2.63 NM <0.34 8.5 55.3 NA 226 NA <1.6 NA 58900 <0.085 1170 <0.25 0.85 j 10.4 NA 24.2 <0.15 243 NA Water Supply Wells L-2 (Duke) 08/13/2015 NM NM NM NM NM NM NM NM NM <1 <1 25 <1 <50 NA <5 <1 60 <1 <5 NA <1 15.5 131 24 <0.2 230 1.34 L-2 (State) 08/13/2015 7.7 NM NM NM NM NM NM NM NM <10 <2 25 <5 <50 <50 <10 <50 51 <2 <10 NA <5 17 120 26 <2 229 <25 L-2 (Vendor) 08/13/2015 6.9 NM 17 357 3.95 NM NM <1 NM <0.5 <0.5 23.7 <0.2 17.3 0.32 <0.5 <0.5 <50 0.14 1.4 NA <0.5 16.1 121 24.8 <0.1 221 1.1 L-3A (Duke) 04/02/2015 NM NM NM NM NM NM NM NM NM <1 <1 63 <1 <50 NA <5 <1 65 <1 29 NA <1 12.3 45 12 <0.2 100 0.563 L-3A (Vendor) 04/02/2015 5.9 NM 14 160 10.9 NM NM 1.5 NM <1 <1 59.9 <0.0156 18.6 NA 0.75 1 60.5 0.125 28.8 NA <0.156 12.6 48.9 12 <1 72 <5 L-3A (Vendor) 08/13/2015 6.2 NM 18 159 0.19 NM NM 1.4 NM <0.5 <0.5 59.8 <0.2 23.6 <0.03 <0.5 1.4 159 0.5 47 NA <0.5 9.02 42.8 8.1 <0.1 81 <1 L-3B (Duke) 04/02/2015 NM NM NM NM NM NM NM NM NM <1 <1 71 <1 <50 NA <5 1.73 153 <1 26 NA <1 15.4 59 16 <0.2 120 <0.3 L-3B (Vendor) 04/02/2015 5.6 NM 14 197 11.1 NM NM 1.7 NM <1 <0.0469 89.5 <0.0156 13.8 NA 0.75 1.8 191 <0.0469 34.1 NA <0.156 18.8 82.8 16 <1 124 <5 L-3B (Vendor) 08/13/2015 5.8 NM 20 229 0.1 NM NM 2.7 NM <0.5 <0.5 75.8 <0.2 11.4 <0.03 <0.5 12 6830 0.72 142 NA <0.5 21 60.3 17.3 <0.1 120 <1 L-8 (Duke) 03/27/2015 NM NM NM NM NM NM NM NM NM <1 <1 93 <1 <50 NA <5 <1 232 1.59 19 NA <1 7.15 91 12 <0.2 150 0.338 L-8 (State) 03/27/2015 6.7 NM NM NM NM NM NM NM NM <10 <2 100 <5 <50 NA <10 <50 74 2.2 12 NA <5 7.8 87 14 <2 150 <25 L-8 (Vendor) 03/27/2015 6.5 NM 15 222 2.9 NM NM <1 NM <0.5 <0.5 69.9 <0.2 27.6 0.075 <0.5 <0.5 52.5 0.96 11.4 NA <0.5 6.89 91.2 11.6 <0.1 152 <1 L-9 (Duke) 03/27/2015 NM NM NM NM NM NM NM NM NM <1 <1 223 <1 <50 NA <5 1.64 63 4.97 64 NA <1 5.67 72 14 <0.2 150 <0.3 P:\Duke Energy Progress.1026\104. Lee Ash Basin GW Assessment\19.EG_CSASUP\tables\Table 1-2 Surficial Groundwater Exceedances.xlsx Page 8 of 9 TABLE 1-2 SURFICIAL GROUNDWATER EXCEEDANCES H.F. LEE ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, GOLDSBORO, NC Analytical Parameter pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Barium Beryllium Boron Chromium (VI) Chromium Cobalt Iron Lead Manganese Nitrate (as N) 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 ug/L ug/L ug/L ug/L ug/L ug/L mg-N/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 4* 700 0.07^ 10 1* 300 15 5o 10 20 NE NE 250 0.2* 500 0.3* Sample ID Sample Collection Date Field Parameters Analytical Results L-9 (State) 03/27/2015 5.8 NM NM NM NM NM NM NM NM <10 <2 240 <5 <50 NA <10 <50 <50 4.2 65 NA <5 6.1 68 13 <2 157 <25 L-9 (Vendor) 03/27/2015 5.3 NM 15 202 6.2 NM NM 1.9 NM <0.5 <0.5 213 <0.2 23.1 <0.03 <0.5 1.5 <50 8.3 63.6 NA 0.82 5.4 68.8 12.9 0.11 153 <1 L-10(Duke) 04/02/2015 NM NM NM NM NM NM NM NM NM <1 <1 217 <1 <50 NA <5 1.99 11 3.05 29 NA <1 6.52 102 14 <0.2 180 <0.3 L-10 (Vendor) 04/02/2015 5.0 NM 15 235 8.6 NM NM <1 NM <1 <1 179 0.25 22.6 NA 0.625 2.1 28.6 2 25.5 NA <0.156 7.36 101 6.1 <1 192 <5 L-10 (Vendor) 08/13/2015 4.4 NM 20 232 7.66 NM NM <1 NM <0.5 1 232 0.4 42.8 <0.03 <0.5 2.4 <50 5.2 28.2 NA 2.2 6.24 94.2 4.2 <0.1 152 <1 L-12 (Duke) 03/27/2015 NM NM NM NM NM NM NM NM NM <1 <1 154 <1 <50 NA <5 1.79 69 2.4 19 NA <1 2.52 30 8.3 <0.2 57 <0.3 L-12(State) 03/27/2015 5.3 NM NM NM NM NM NM NM NM <10 <2 170 <5 <50 NA <10 <50 50 3.8 19 NA <5 2.8 27 6.4 <2 54 <25 L-12 (Vendor) 03/27/2015 5.0 NM 14 75 4.9 NM NM 2.4 NM <0.5 <0.5 144 0.24 8.7 <0.03 <0.5 1.8 <50 2.4 17.7 NA <0.5 2.45 29.3 5.2 <0.1 98 <1 L-16 (Duke) 05/06/2015 NM NM NM NM NM NM NM NM NM <1 <1 108 <1 145 NA <5 1.25 1930 <1 342 NA <1 47.1 245 38 <0.2 450 <0.3 L-16 (Vendor) 05/06/2015 7.0 NM 19 5 10.8 NM NM 12 NM <1 <0.001 88 <0.25 130 NA <1 0.0012 1450 <0.003 317 NA <0.01 47.8 249 38 <0.001 <5 <0.005 L-18 (Duke) 04/20/2015 NM NM NM NM NM NM NM NM NM <1 <1 260 <1 <50 NA <5 2.29 29 6.22 37 NA <1 3.08 40 23 <0.2 80 <0.3 L-18 (Vendor) 04/20/2015 4.5 NM 17 58 8.41 NM NM <1 NM <1 <5 268 <1 20 <100 <5 2 42 6 35 NA <5 3.28 40 10.8 <0.2 86.5 <0.3 L-19 (Duke) 04/20/2015 NM NM NM NM NM NM NM NM NM <1 <1 337 <1 <50 NA <5 6.96 21 5.92 53 NA 1.71 2.53 76 30 <0.2 120 <0.3 L-19(Vendor) 04/20/2015 4.3 NM 15 90 7.42 NM NM <1 NM <1 <5 368 <1 10 <100 <5 7 60 6 55 NA <5 2.75 84 13.7 <0.2 127 <0.3 L-20 (Duke) 08/31/2015 NM NM NM NM NM NM NM NM NM <1 <1 143 <1 <50 NA <5 1.54 322 1.34 19 NA <1 4.37 41 9.3 <0.2 63 0.425 L-20 (Vendor) 08/31/2015 5.4 NM 22 81 4.24 NM NM <1 NM <0.5 <0.5 142 0.3 16.4 <0.03 <0.5 1.6 316 1.4 19 NA 0.91 4.49 40 8.9 <0.1 75 <1 L-22 (Duke) 08/31/2015 NM NM NM NM NM NM NM NM NM <1 <1 75 <1 <50 NA <5 <1 96 <1 14 NA <1 6.47 77 14 <0.2 120 0.617 L-22 (Vendor) 08/31/2015 6.2 NM 26 158 0.6 NM NM 1.8 NM <0.5 <0.5 73.3 <0.2 25.4 <0.03 <0.5 <0.5 67.6 0.47 13.5 NA <0.5 6.35 71.9 13.9 <0.1 116 <1 L-25 (Duke) 05/20/2015 NM NM NM NM NM NM NM NM NM <1 <1 39 <1 <50 NA <5 <1 91 <1 <5 NA <1 3.22 57 6.4 <0.2 100 2.56 L-25 (Vendor) 05/20/2015 6.5 NM 18 24 1.33 NM NM 1.3 NM <0.5 <0.5 34.7 <0.2 <5 0.033 <0.5 <0.5 64.4 0.51 1.3 NA <0.5 <0.05 53.6 7 <0.1 89 2.4 L-27 (Duke) 05/20/2015 NM NM NM NM NM NM NM NM NM <1 <1 169 <1 <50 NA <5 1.46 13 1.48 43 NA <1 4.67 80 20 <0.2 110 <0.3 L-27 (Vendor) 05/20/2015 5.2 NM 18 137 4.55 NM NM <1 NM <0.5 <0.5 162 <0.2 <5 <0.03 <0.5 1.6 <50 1.5 42 NA 0.66 <0.05 75.5 <2 <0.1 <25 <1 L-28-1 (Duke) 08/24/2015 NM NM NM NM NM NM NM NM NM <1 <1 99 <1 <50 NA <5 2.89 <10 2.56 38 NA <1 2.29 43 22 <0.2 110 <0.3 L-28-1 (Vendor) 08/24/2015 5.3 NM 18 118 5.91 NM NM <1 NM <0.5 <0.5 95.6 <0.2 25.1 0.053 <0.5 3 <50 2.6 36 NA 0.81 2.33 42.9 24.9 0.11 106 <1 L-28-2(Duke) 08/24/2015 NM NM NM NM NM NM NM NM NM <1 <1 103 <1 51 NA <5 <1 40 <1 <5 NA <1 14 134 24 <0.2 150 0.782 L-28-2 (Vendor) 08/24/2015 6.2 NM 21 266 2.67 NM NM 1.1 NM <0.5 <0.5 98.8 <0.2 40.3 0.037 <0.5 <0.5 <50 0.36 1.1 NA <0.5 14.2 129 22.2 <0.1 130 <1 L-31 (Duke) 08/13/2015 NM NM NM NM NM NM NM NM NM <1 <1 169 <1 <50 NA <5 2.96 352 1.86 61 NA 1.06 7.04 58 25 <0.2 77 0.444 L-31 (Vendor) 1 08/13/2015 1 5.1 1 NM 1 20 1 113 1 1.98 NM NM 1.5 NM <0.5 < 2.5__L 156 0.78 25.7 <0.03 1 <0.5 1 2.8 1 262 1 2.1 49.8 NA 1.4 6.43 52.2 21.3 <0.1 64 <1 Notes: 77 - Bold highlighted concentration indicates exceedance of the 15A NCAC 02L Standard, Appendix 2, April 1, 2013 ORP = Oxidation Reduction Potential Deg C = Degree Celsius mg/L = milligrams per liter ft = Feet NE = Not established mg-N/L = milligram nitrogen per liter NO = Not detected NTU = nephelometric turbidity unit mV = millivolts Temp = Temperature S.U. = Standard Unit ug/L = microgram per liter DO = Dissolved Oxygen NA = Not analyzed Eh = Redox Potential < = concentration not detected at or above the reporting limit. = NC DHHS Health Screening Level. * - 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. C = Associated midday/end of day field parameter calibration not within range. D3 = Sample was diluted due to the presence of high levels of non -target analytes or other matrix interference. j = indicates concentration reported below Practical Quantitation Limit (PQL), but above Method Detection Limit (MDL) and therefore concentration is estimated. M1 = Matrix spike recovery was high: the associated Laboratory Control Spike (LCS) was acceptable. M6 = Matrix spike and Matrix spike duplicate recovery not evaluated against control limits due to sample dilution. N1 = This sample was inadvertently collected with sample running through the flow cell and should be considered invalid based on possible contamination from the flow cell. umhos/cm = micro mhos per centimeter Spec Cond = Specific Conductance NM = Not measured DUP = Duplicate Prepared by: BER Checked by: MCD P:\Duke Energy Progress.1026\104. Lee Ash Basin GW Assessment\19.EG_CSASUP\tables\Table 1-2 Surficial Groundwater Exceedances.xlsx Page 9 of 9 TABLE 1-3 BLACK CREEK GROUNDWATER EXCEEDANCES H.F. LEE ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, GOLDSBORO, INC Analytical Parameter pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Chromium (VI) Cobalt Iron Manganese Sodium Strontium Thallium 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 mg/L ug/L ug/L ug/L 15A NCAC 02L Standard 6.5-8.5 NE NE NE NE NE NE NE NE 0.07A 1* 300 50 NE NE 0.2* 0.3* Sample ID Sample Collection Date Field Parameters Analytical Results Background AMW-17BC 1 08/10/2016 7.3 5.30 23 429 0.48 201 406 16.8 0 0.16 1.11 507 52 40.1 153 <0.2 1.15 Active Ash Basin AMW-6RBC 05/26/2015 7.9 5.33 21 346 0.46 -145 60 8.89 1.5 NA <1 3640 235 30.3 127 <0.2 0.488 AMW-6RBC 06/09/2015 8.6 5.98 19 369 0.63 -179 26 2.56 2.5 NA <1 6360 342 33.6 142 <0.2 <0.3 AMW-6RBC 09/24/2015 7.1 7.85 18 457 0.3 -134 71 3.5 NM NA <1 6230 244 21.3 109 <0.2 <0.3 AMW-6RBC 12/05/2015 7.1 4.45 16 240 0.31 -122 84 3.03 4.5 <0.03 <0.5 5700 230 21.6 100 <0.1 <1 AMW-6RBC DUP 12/05/2015 7.1 4.45 16 240 0.31 -122 84 3.03 4.5 1 <0.03 <0.5 1 5500 220 21.3 100 <0.1 <1 AMW-6RBC 01/12/2016 7.0 4.18 15 148 0.3 -128 77 0.7 4.5 <0.03 <1 5320 245 20.9 105 <0.2 <0.3 AMW-14BC 05/20/2015 7.1 4.54 19 304 0.15 -114 91 9.3 1 NA <1 2090 121 30.9 117 0.402 <0.3 AMW-14BC 06/11/2015 7.1 5.62 20 329 0.53 110 315 4.63 2 NA <1 1960 115 38.1 119 <0.2 <0.3 AMW-14BC 12/04/2015 7.2 4.25 16 277 0.16 -159 46 1.91 2 <0.03 <1 2720 145 29.1 108 <0.2 <0.3 AMW-14BC 01/12/2016 7.2 3.93 14 243 0.23 -146 59 3.52 2.5 <0.03 <1 1 2440 148 29.8 110 <0.2 <0.3 AMW-15BC 05/20/2015 8.4 5.51 18 259 0.31 -151 55 21.6 1.4 NA <1 1860 97 25.6 97 <0.2 0.311 AMW-15BC 06/11/2015 7.5 6.60 19 256 0.4 118 323 9.29 0.5 NA <1 1510 90 30.2 88 <0.2 <0.3 AMW-15BC DUP 06/11/2015 7.5 6.60 19 256 0.4 118 323 9.29 0.5 NA <1 1490 89 30.3 86 <0.2 0.363 AMW-15BC 12/06/2015 7.7 5.07 16 228 0.38 -144 61 6.68 0.5 <0.03 <0.5 1300 82 26.8 78 <0.1 <1 AMW-15BC 01/12/2016 7.5 4.64 15 207 0.28 -155 50 7.92 1 <0.03 <1 1830 88 23.2 90 <0.2 <0.3 AMW-15BC DUP 01/12/2016 7.5 4.64 15 207 0.28 -155 50 7.92 1 <0.03 <1 1800 89 22.4 90 <0.2 <0.3 CTMW-1 12/13/2010 6.4 2.41 13 104 NM NM NM 1.2 NM NA NA 1560 86.1 NA NA <0.1 NA CTMW-1 06/08/2011 6.2 2.85 21 165 1.29 -89 117 7.94 NM NA NA 2230 100 NA NA <0.1 NA CTMW-1 10/05/2011 6.2 2.94 20 173 0.36 -51 154 3.12 NM NA NA 3620 102 NA NA <0.1 NA CTMW-1 03/15/2012 6.3 2.50 18 186 2.5 -87 118 9.33 NM NA NA 2170 86.6 NA NA <0.1 NA CTMW-1 06/13/2012 6.1 2.77 21 190 1.34 -111 94 9.32 NM NA NA 3690 93.5 NA NA <0.1 NA CTMW-1 10/17/2012 6.2 2.85 19 192 0.63 -1 205 6.19 NM NA NA 2160 96.9 NA NA <0.1 NA CTMW-1 DUP 10/17/2012 6.2 2.85 19 192 0.63 1 -1 205 6.19 NM NA NA 2210 97.7 NA NA <0.1 NA CTMW-1 03/07/2013 6.2 1.65 13 189 0.61 8 213 9.62 NM NA NA 2580 94 NA NA <0.2 NA CTMW-1 06/05/2013 6.1 3.44 19 201 0.26 36 241 40.6 NM NA NA 6660 111 NA NA <0.2 NA CTMW-1 10/11/2013 6.2 3.92 19 198 0.38 29 234 6.98 NM NA NA 2040 109 NA NA <0.2 NA CTMW-1 03/10/2014 6.2 0.41 18 202 1.48 122 327 5.83 NM NA NA 2040 102 NA NA <0.2 NA CTMW-1 06/11/2014 6.2 3.09 22 201 0.25 9 214 9.7 NM NA NA 3490 112 NA NA <0.2 NA CTMW-1 10/17/2014 6.2 2.04 19 146 0.28 48 253 40.6 NM NA NA 2620 112 NA NA <0.2 NA CTMW-1 03/03/2015 6.2 0.54 8 185 0.48 71 276 9.34 NM NA NA 1190 100 NA NA <0.2 NA CTMW-1 06/08/2015 6.1 3.62 20 195 0.35 25 1 230 4.97 2 NA 5.62 2590 126 14.7 NA <0.2 NA CTMW-1 10/06/2015 6.1 2.02 18 204 0.3 1 25 230 1.8 NM NA 1 4.11 1 2040 117 14.7 91 <0.2 0.341 CTMW-1 12/05/2015 6.3 1.89 16 382 0.4 1 10 215 3.76 2.5 <0.03 1 3.8 1 2200 110 15.1 93 <0.1 <1 P:\Duke Energy Progress.1026\104. Lee Ash Basin GW Assessment\19.EG_CSASUP\tables\Table 1-3 Black Creek Groundwater Exceedances.xlsx Page 1 of 2 TABLE 1-3 BLACK CREEK GROUNDWATER EXCEEDANCES H.F. LEE ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, GOLDSBORO, NC Analytical Parameter pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Chromium (VI) Cobalt Iron Manganese Sodium Strontium Thallium 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 mg/L ug/L ug/L ug/L 15A NCAC 02L Standard 6.5-8.5 NE NE NE NE NE NE NE NE 0.07^ 1* 300 50 NE NE 0.2* 0.3* Sample ID Sample Collection Date Field Parameters Analytical Results CTMW-1 02/01/2016 6.4 1.18 14 214 0.34 -6 199 7.01 2.5 <0.03 M1 1.47 3170 129 14.9 94 <0.2 1.15 CTMW-1 03/03/2016 7.2 0.00 13 204 0.29 4 209 1 1.5 NA 1.6 2390 116 15.3 97 <0.2 0.856 CTMW-1 06/07/2016 6.2 2.75 20 211 0.31 -52 153 4.52 NM NA 1.41 3410 133 15.1 97 <0.2 0.787 DMW-1 09/27/2013 6.1 NM 19 77 1.45 -39 NM 6.11 NM NA NA 5270 110 9.27 NA <0.15 NA DMW-1 06/09/2015 5.8 4.02 20 94 0.37 21 226 16.2 1.5 NA <1 2310 70 8.96 26 <0.2 <0.3 DMW-1 09/24/2015 6.2 5.22 19 168 0.3 21 226 3.94 NM NA <1 1650 71 8.96 27 <0.2 <0.3 DMW-1 12/05/2015 5.8 3.57 15 91 0.5 28 233 3.11 0.5 <0.03 <0.5 1600 65 8.700001 26 <0.1 <1 DMW-1 02/01/2016 6.2 1.85 14 95 0.52 43 248 3.33 1.5 <0.03 <1 1540 69 8.91 27 <0.2 <0.3 DMW-2 09/27/2013 10.1 NM 17 32 0.46 -11 NM 80.7 NM NA NA 1600 59.9 41.1 NA <0.15 NA DMW-2 06/15/2015 11.3 8.05 23 599 0.73 230 435 10.2 0 NA <1 463 <5 23.7 2240 <0.2 2.01 DMW-2 09/24/2015 11.3 9.71 19 994 0.4 -172 33 4.13 NM NA <1 71 <5 16 2310 <0.2 0.5 DMW-2 12/04/2015 11.9 7.88 15 766 0.4 -250 -45 2.9 ND 0.15 <1 56 <5 14.8 2750 <0.2 <0.3 DMW-2 01/12/2016 12.0 7.28 15 627 0.28 -141 64 4.95 0.5 0.14 <1 59 <5 15.5 1900 <0.2 0.339 Prepared by: BER Checked by: JDM Notes: 0 - Bold highlighted concentration indicates exceedance of the 15A NCAC 02L Standard, Appendix 2, April 1, 2013. ORP = Oxidation Reduction Potential NE = Not established ft = Feet NTU = nephelometric turbidity unit ND = Not detected 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 my = millivolts DUP = Duplicate NA = Not analyzed 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. ^ = NC DHHS Health Screening Level. M1 = Matrix spike recovery was high: the associated Laboratory Control Spike (LCS) was acceptable. P:\Duke Energy Progress.1026\104. Lee Ash Basin GW Assessment\19.EG_CSASUP\tables\Table 1-3 Black Creek Groundwater Exceed ances.xlsx Page 2 of 2 TABLE 1-4 CAPE FEAR GROUNDWATER EXCEEDANCES H.F. LEE ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, GOLDSBORO, NC Analytical Parameter pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Arsenic Boron Chromium (VI) Cobalt Iron Manganese Sodium Strontium 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 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 10 700 0.07^ 1* 300 50 NE NE 500 0.3* Sample ID Sample Collection Date Field Parameters Analytical Results Background AMW-11BC 03/02/2015 7.1 3.78 15 1498 0.15 -487 -282 9.9 3 <1 <50 NA 2.75 6300 1220 6.19 29 <250 <0.3 AMW-11BC 06/11/2015 7.2 6.03 19 134 0.35 -168 38 4.62 0.5 <1 <50 NA 1.05 3290 983 6.56 33 86 <0.3 AMW-11BC 09/24/2015 7.6 7.61 19 137 0.29 -230 -25 5.13 NM <1 <50 NA <1 1460 600 7.54 37 NA <0.3 AMW-11BC 12/04/2015 7.2 4.90 13 161 0.24 -222 -17 2.63 1.6 <1 <50 <0.03 <1 4910 1380 6.29 39 83 <0.3 AMW-11BC 01/12/2016 7.1 3.35 15 154 0.21 -171 34 6.55 0.5 <1 <50 <0.03 1.41 6750 1520 5.84 39 92 <0.3 AMW-11BC 03/01/2016 6.9 S 3.26 15 167 S 0.51 S -181 24 7.6 2.5 <1 <50 <0.03 1.23 7460 1560 5.34 38 78 <0.3 AMW-11BC 06/08/2016 7.4 5.95 18 171 0.2 -193 12 8.4 3 <1 <50 <0.03 <1 7260 1470 6.45 47 74 0.361 AMW-11BC 08/03/2016 6.8 6.21 21 180 0.26 -106 99 6.03 2 <1 <50 1.2 <1 9820 1680 5.63 43 85 0.415 AMW-12BC 03/03/2015 6.2 6.45 10 175 0.5 -399 -194 5.73 3 <1 <50 NA 1.19 3260 285 16.5 46 110 <0.3 AMW-12BC 06/10/2015 6.3 11.19 22 142 0.67 54 259 3.82 3 <1 <50 NA <1 12600 287 11.3 34 87 <0.3 AMW-12BC 12/04/2015 6.2 11.90 11 112 0.6 -10 195 1 2 <1 <50 0.054 2.46 75 16 3.78 23 68 <0.3 AMW-12BC 01/11/2016 6.1 8.60 15 97 0.3 -43 163 1.8 3 1.12 <50 <0.03 <1 9280 180 10.4 26 65 <0.3 AMW-12BC 03/01/2016 6.3 7.82 16 120 0.62 3 208 0.8 3 1.17 <50 <0.03 <1 9020 167 10.5 24 81 <0.3 AMW-12BC 06/08/2016 5.9 10.48 20 113 0.45 -17 188 4.42 3 <1 <50 <0.03 <1 3780 143 9.62 26 54 <0.3 AMW-12BC 08/04/2016 5.7 15.92 21 105 0.36 119 324 9.73 4 <1 <50 <0.03 <1 5810 149 9.47 26 71 <0.3 AMW-13BC 03/05/2015 8.9 4.54 18 360 0.07 -374 -169 69.2 1 <1 70 NA <1 3620 43 22.4 151 200 0.962 AMW-13BC 06/10/2015 6.6 12.19 22 317 0.42 -85 120 8.24 4.5 <1 73 NA <1 10800 99 15.8 125 170 0.324 AMW-13BC 12/04/2015 7.2 9.23 15 309 0.5 -139 66 1 1 <1 67 <0.03 <1 9880 118 14.7 134 170 <0.3 AMW-13BC 01/11/2016 7.4 3.20 16 310 0.4 -129 76 1.84 1 <1 70 <0.03 <1 8750 126 15.9 142 170 <0.3 AMW-13BC 03/01/2016 7.1 3.96 17 311 0.3 -133 72 0.9 3 <1 68 <0.03 <1 9100 117 15 132 160 <0.3 AMW-13BC 06/08/2016 6.7 10.62 19 313 0.27 -165 40 0.97 4 <1 68 <0.03 <1 10800 102 14.2 125 150 <0.3 AMW-13BC 08/03/2016 7.0 11.62 21 305 0.25 -41 164 4.82 5 <1 69 0.65 M6 <1 10700 104 14.4 126 150 0.343 AMW-16BC 07/20/2016 6.6 27.02 21 297 2.5 322 527 5.93 NM <1 <50 0.058 12.4 16 48 17.6 33 120 3.2 IMW-01BC 05/27/2015 6.4 4.25 21 427 2.82 147 352 9.43 0 <1 156 NA <1 147 59 59.2 105 220 <0.3 IMW-01BC 06/12/2015 6.7 4.63 22 419 2.13 203 408 2.66 0 <1 171 NA <1 98 66 62.5 113 230 <0.3 IMW-01BC 09/24/2015 6.8 6.97 20 451 0.4 -76 129 2.1 NM <1 164 NA <1 4380 111 62.9 120 NA <0.3 IMW-01BC 12/06/2015 7.0 3.40 16 478 0.3 -90 115 1.84 2.5 0.87 150 <0.03 0.73 6500 110 61 110 223 <1 IMW-01BC 01/12/2016 6.8 3.20 14 250 0.4 -80 125 3.7 5 <1 158 <0.03 <1 5490 132 63 114 240 <0.3 IMW-01BC 03/04/2016 6.9 3.36 8 447 0.79 143 348 9.7 0 <1 156 <0.03 <1 583 80 72.1 97 260 <0.3 IMW-01BC 06/07/2016 6.8 3.69 22 455 1.3 88 293 7.5 0 <1 153 0.052 <1 890 17 68.3 104 250 0.455 IMW-01BC 08/03/2016 6.7 4.40 22 445 0.6 259 464 7.38 0 <1 153 0.038 <1 493 28 71.2 104 240 0.332 IMW-02BC 05/26/2015 7.8 3.61 23 521 0.7 -137 68 12 0 1.61 293 NA <1 364 38 81.4 143 280 0.429 IMW-02BC 06/12/2015 8.0 3.80 23 587 0.46 124 329 15.8 0 2.21 331 NA <1 771 50 101 129 350 0.629 IMW-02BC 12/06/2015 7.7 3.76 15 616 0.5 -120 85 7.33 0 1.5 320 <0.03 <0.5 660 75 92.7 150 267 <1 IMW-02BC 01/13/2016 8.0 3.51 10 600 0.65 108 313 7.96 0 1.69 308 <0.03 <1 572 47 119 133 340 0.438 IMW-02BC 03/03/2016 8.2 3.75 14 610 0.36 -210 -5 9.98 0 1.36 315 0.036 <1 745 25 128 98 370 0.637 IMW-02BC 06/07/2016 8.6 3.55 21 663 0.4 -58 147 8.5 0 1.37 289 <0.03 <1 423 30 117 117 350 0.61 IMW-02BC 1 08/03/2016 1 8.3 3.50 1 22 1 604 1 0.31 1 -45 160 5.79 0.3 1.37 1 284 0.046 1 <1 245 29 1 104 1 128 340 0.527 P:\Duke Energy Progress.1026\104. Lee Ash Basin GW Assessment\19.EG_CSASUP\tables\Table 1-4 Cape Fear Groundwater Exceedances.xlsx Page 1 of 2 TABLE 1-4 CAPE FEAR GROUNDWATER EXCEEDANCES H.F. LEE ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, GOLDSBORO, NC Analytical Parameter pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Arsenic Boron Chromium (VI) Cobalt Iron Manganese Sodium Strontium 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 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 10 700 0.07A 1* 300 50 NE NE 500 0.3* Sample ID Sample Collection Date Field Parameters Analytical Results IMW-03BC 05/27/2015 6.3 3.06 26 198 2.57 33 238 17 1 <1 56 NA <1 1510 79 7.39 83 110 <0.3 IMW-03BC 06/16/2015 6.2 3.32 22 186 1.76 -12 193 3.15 1 <1 52 NA <1 994 86 7.46 76 150 <0.3 IMW-03BC 12/06/2015 6.4 1.57 13 198 0.6 -43 162 4.16 2.5 0.5 51 <0.03 1.2 9700 150 <5 81 118 D6 <1 IMW-03BC 01/13/2016 6.8 1.50 15 122 5.6 2 207 9.5 3 <1 58 <0.03 <1 1800 45 6.54 85 110 <0.3 IMW-03BC 03/04/2016 6.8 1 1.55 11 281 1 0.27 -65 1 140 1 41.6 6.5 <1 57 1 <0.03 1 1.31 1 10900 158 1 15.5 1 86 1 130 1 <0.3 IMW-03BC 06/08/2016 6.5 1.86 20 224 0.3 -37 168 8.7 6 <1 55 <0.03 <1 6250 148 10.8 86 110 <0.3 IMW-03BC 08/03/2016 6.5 2.63 24 228 0.37 31 236 1.27 7 <1 53 1.7 1.13 11000 144 9.04 85 110 <0.3 Active Ash Basin AMW-09BC 03/12/2015 7.4 3.88 15 272 0.18 -443 -238 28.5 2 <1 68 NA <1 3070 253 6.06 84 730 0.553 AMW-09BC 06/11/2015 7.2 6.97 24 271 0.92 125 330 8.01 1.5 <1 73 NA <1 3650 249 4.74 94 160 <0.3 AMW-09BC 12/04/2015 7.3 5.90 16 265 0.3 -110 95 9 2.5 <1 68 <0.03 <1 2520 196 4.23 89 140 <0.3 AMW-09BC 01/12/2016 7.4 4.32 15 260 0.27 -124 81 7.49 3.5 <1 68 <0.03 <1 2820 210 4.79 92 140 0.36 Inactive Ash Basin DMW-3 08/30/2013 6.0 NM 19 259 1.25 -43 NM 8.56 NM 1.3 j 141 NA NA 59700 3970 14.8 NA 206 DMW-3 06/12/2015 5.7 9.80 19 311 0.17 -25 180 4.67 2 <1 148 NA 41.8 49100 3650 10.5 52 190 <0.3 DMW-3 09/25/2015 5.8 12.03 18 310 0.25 -13 192 9.39 NM <1 162 NA 43.1 47900 3440 10.4 52 NA <0.3 DMW-3 12/05/2015 6.0 8.55 16 311 0.4 17 222 2.48 3.5 0.53 120 <0.03 39.5 48300 3100 10.6 49 249 <1 DMW-3 02/01/2016 6.0 5.73 17 304 0.48 -4 1 201 5.31 2.5 <1 139 1 <0.03 36.6 432001 2980 11.2 61 190 0.341 IMW-04BC 08/10/2016 6.4 6.28 22 135 0.43 157 362 70.3 NM <1 <50 1 2.4 <1 6200 1 449 10.1 92 59 1.87 IMW-05BC 08/10/2016 6.3 12.75 20 329 0.31 48 253 9.57 6 <1 <50 1 2.2 1 4.84 1 229001 637 1 13.7 1 87 1 200 1 1.07 Prepared by: BER Checked by: JDM Notes• 0 - Bold highlighted concentration indicates exceedance of the 15A NCAC 02L Standard, Appendix 2, April 1, 2013. ORP = Oxidation Reduction Potential NE = Not established ft = Feet Temp = Temperature DO = Dissolved Oxygen Deg C = Degree Celsius mg/L = milligrams per liter my = millivolts NTU = nephelometric turbidity unit S.U. = Standard Unit ug/L = microgram per liter umhos/cm = micro mhos per centimeter Spec Cond = Specific Conductance NM = Not Measured NA = Not analyzed 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. A = NC DHHS Health Screening Level. 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. M6 = Matrix spike and Matrix spike duplicate recovery not evaluated against control limits due to sample dilution. S = Associated calibration check did not meet specified criteria. P:\Duke Energy Progress.1026\104. Lee Ash Basin GW Assessment\19.EG_CSASUP\tables\Table 1-4 Cape Fear Groundwater Exceedances.xlsx Page 2 of 2 TABLE 1-5 WATER LEVEL ELEVATION DATA - AUGUST 4 AND 5 2016 H.F. LEE ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, GOLDSBORO, NC Well ID Latitude Longitude TOC Elevation (ft) Depth to Water (ft below TOC) Groundwater Elevation (ft) Active Basin ABMW-01 35.38331 78.07792 103.02 24.90 78.12 ABMW-01S 35.38328 78.07799 102.68 25.82 76.86 AMW-04BC 35.38224 78.08189 72.97 12.54 60.43 AMW-06RBC 35.38319 78.06817 76.10 6.34 69.76 AMW-09BC 35.38470 78.08251 76.13 7.30 68.83 AMW-11S 35.38484 78.09484 74.42 6.84 67.58 AMW-11BC 35.38480 78.09486 73.80 6.30 67.50 AMW-12S 35.38596 78.08899 91.25 14.03 77.22 AMW-12BC 35.38597 78.08895 91.20 15.92 75.28 AMW-13S 35.38219 78.08906 72.72 11.50 61.22 AMW-13BC 35.38219 78.08912 72.81 11.62 61.19 AMW-14S 35.38716 78.07069 78.08 4.58 73.50 AMW-14BC 35.38714 78.07071 77.43 5.82 71.61 AMW-15S 35.38579 78.06724 77.22 5.43 71.79 AMW-15BC 35.38577 78.06726 77.21 6.83 70.38 DMW-1 35.37968 78.07321 71.17 4.01 67.16 DMW-2 35.38854 78.07192 79.25 8.27 70.98 PZ-3* 35.38398 78.07808 101.50 22.44 79.06 MW-1 NM NM 78.58 5.73 72.85 MW-3 NM NM 80.84 13.58 67.26 BGMW-9 35.38482 78.08267 76.17 5.43 70.74 BGMW-10 35.38857 78.07190 78.46 4.57 73.89 CTMW-1 35.23717 84.93824 69.70 3.45 66.25 CMW-5 35.37940 78.06772 69.78 10.90 58.88 CMW-6R 35.38318 78.06810 75.37 6.35 69.02 CMW-7 35.38478 78.08273 78.78 16.68 62.10 CMW-8 35.38023 78.07408 77.43 18.49 58.94 CMW-10 35.38237 78.08271 73.29 13.49 59.80 SMW-2 35.38757 78.08116 116.35 26.35 90.00 CCR-100S 35.38754 78.08103 116.51 26.44 90.07 AMW-16BC 35.38752 78.08112 116.30 27.12 89.18 AMW-17S 35.39063 78.07302 80.40 5.35 75.05 AMW-17BC 35.39063 78.07304 80.71 5.72 74.99 AMW-18S 35.38205 78.06720 78.28 10.62 67.66 Inactive Basins IABMW-01 35.38085 78.10770 81.76 6.37 75.39 IABMW-01S 35.38086 78.10772 81.57 6.14 75.43 IABMW-02 35.37991 78.10372 81.88 Dry Dry IABMW-02S 35.37986 78.10368 81.99 13.73 68.26 P:\Duke Energy Progress.1026\104. Lee Ash Basin GW Assess m ent\1 9. EG_CSAS U P\ta bles\Ta ble 1-5 - Water Level Elevation Data - August 4 and 5, 2016.xlsx Page 1 of 2 TABLE 1-5 WATER LEVEL ELEVATION DATA - AUGUST 4 AND 5 2016 H.F. LEE ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, GOLDSBORO, NC Well ID Latitude Longitude TOC Elevation (ft) Depth to Water (ft below TOC) Groundwater Elevation (ft) IABMW-03 35.37354 78.10562 80.76 7.70 73.06 IABMW-03S 35.37354 78.10565 81.19 12.95 68.24 IMW-01S 35.38107 78.11319 76.43 5.00 71.43 IMW-01BC 35.38105 78.11315 82.87 4.61 78.26 IMW-02BC 35.38224 78.11081 77.39 3.54 73.85 IMW-03S 35.38498 78.10619 78.25 2.44 75.81 IMW-03BC 35.38498 78.10622 78.45 2.53 75.92 PZ-4* 35.37957 78.10549 82.20 9.19 73.01 PZ-5* 35.38148 78.10182 81.46 6.70 74.76 PZ-6* NM NM 81.07 11.07 70.00 DMW-3 35.37868 78.10163 71.85 9.78 62.07 SMW-3 35.38274 78.10168 76.93 3.11 73.82 SMW-4 35.37567 78.10988 76.80 6.65 70.15 SMW-5 NM NM 78.66 7.85 70.81 BW-1 35.38292 78.10864 77.64 6.69 70.95 CW-1 35.37341 78.10290 72.83 13.11 59.72 CW-2 35.37652 78.10243 73.90 13.85 60.05 CW-3 35.37861 78.10169 74.83 9.64 65.19 CW-4 35.38066 78.09953 76.03 15.85 60.18 IMW-04S 35.37244 78.11014 76.46 5.11 71.35 IMW-04BC 35.37246 78.11012 77.34 5.93 71.41 IMW-05S 35.37249 78.10452 79.19 11.89 67.30 IMW-05BC 35.37248 78.10453 79.57 12.78 66.79 LO LA LLMW-1 35.38090 78.08065 77.78 7.06 70.72 LLMW-1S 35.38088 78.08061 77.81 4.15 73.66 LLMW-2 35.38078 78.07935 77.72 5.19 DRY LLMW-2S 35.38076 78.07935 77.59 6.60 70.99 LLMW-3 35.38060 78.07837 77.59 3.27 74.32 Prepared by: JDM Checked by: TCP Notes• Water levels were measured on 8/4/2016 and 8/5/2016. TOC = Top of Casing ft = feet NM = Not Measured * Elevations are estimated based on 2013 Geosyntec Report: Geosyntec Consultants. Preliminary Site Investigation Data Report, Conceptual Closure Plan, H.F. Lee Plant. November 2013. P:\Duke Energy Progress.1026\104. Lee Ash Basin GW Assessment\19.EG_CSASUP\tables\Table 1-5 - Water Level Elevation Data - August 4 and 5, 2016.xlsx Page 2 of 2 TABLE 1-6 SURFACE WATER ELEVATION DATA - AUGUST 5, 2016 H.F. LEE ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC., GOLDSBORO, NC Location ID Latitude Longitude Measuring Point Elevation (ft) Depth to Water (ft) Surface Water Elevation (ft) Inactive Basins SG-01 35.38160 78.11200 72.55 1.15 71.40 SG-02 35.38308 78.10896 71.90 1.31 70.59 SG-03 35.38311 78.10467 76.12 1.38 74.74 Active Basin SG-04 35.38516 78.07859 71.00 1.32 69.68 SG-05 35.38511 78.07823 70.84 1.10 69.74 SG-06 35.38691 78.07192 74.45 1.40 73.05 SG-07 35.38261 78.08439 65.61 4.56 61.05 SG-08 35.38053 78.06841 67.68 1.26 66.42 River Gauge 35.38114 78.08724 89.27 30.65 58.62 Prepared by: JDM Checked by: TCP Notes: Measuring point elevations for SG-01 through SG-06, and SG-08. Measuring point for SG-07 is the top of post. Measuring point for River Gauge is a punch mark line on a bridge truss over the Neuse River. ft = Feet P:\Duke Energy Progress.1026\104. Lee Ash Basin GW Assessment\19.EG_CSASUP\tables\Table 1-6 - Surface Water Elevation Data - August 5, 2016.xlsx Page 1 of 1 TABLE 1-7 VERTICAL GROUNDWATER GRADIENTS H.F. LEE ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, GOLDSBORO, NC Well ID Measuring Point TOC Elevation (Feet-MSL) Measured Depth to Water* (Feet-BTOC) Water Level (Feet-MSL) Midpoint Screen Elevation (Feet-MSL) Vertical Gradient Inactive Basins CW-3 75 9.64 65.36 58.73 0.138 down DMW-3 71.85 9.78 62.07 34.85 IMW-01S 76.43 5 71.433 60.82 0.363 IMW-01BC 82.87 4.61 78.259 42.04 up IMW-03S 78.25 2.44 75.81 61.78 0.007 up IMW-03BC 78.45 2.53 75.916 46.60 IMW-04S 76.46 5.11 71.347 60.82 0.004 up IMW-04BC 77.34 5.93 71.413 45.39 IMW-05S 79.19 11.89 67.302 55.47 0.018 IMW-05BC 79.57 12.78 66.789 26.87 down Active Basin CMW-6R 75.37 6.35 69.02 63.52 0.020 AMW-06RBC 76.10 6.34 69.7591 25.87 up BGMW-9 76.17 5.43 70.74 66.07 0.032 AMW-09BC 76.13 7.3 68.8334 7.33 down AMW-11S 74.42 6.84 67.5763 63.38 0.002 AMW-11BC 73.80 6.3 67.495 29.79 down AMW-12S 91.25 14.03 77.219 68.50 0.038 AMW-12BC 91.96 15.92 76.04 37.81 down AMW-13S 72.72 11.5 61.217 57.66 0.000 AMW-13BC 72.81 11.62 61.194 10.71 neutral AMW-14S 78.08 4.58 73.501 59.08 0.072 AMW-14BC 77.43 5.82 71.609 32.78 down AMW-15S 77.22 5.43 71.788 61.09 0.052 AMW-15BC 77.21 6.83 70.383 34.21 down CCR-100S 116.51 26.44 90.07 81.10 0.037 AMW-16BC 116.30 27.12 89.177 56.80 down AMW-17S 80.40 5.35 75.047 64.65 0.002 AMW-17BC 80.71 5.72 74.989 38.75 down BGMW-10 78.46 4.57 73.89 65.20 0.087 DMW-2 79.25 8.27 70.98 31.85 down CMW-5 69.78 10.9 58.88 55.79 0.310 CTMW-1 69.70 3.45 66.25 32.01 up CMW-10 73.29 13.49 59.8 57.67 0.084 AMW-04BC 72.97 12.54 60.43 50.21 up Lay of Land Area (LOLA) LLMW-01 77.72 7.06 70.6628 71.52 0.209 up LLMW-01S 77.81 4.15 73.6573 57.21 LLMW-02 77.72 5.19 72.5303 71.70 0.199 down LLMW-02S 77.59 6.6 70.9928 63.99 Prepared by: TCP Checked by:JHG Notes: TOC = Top of casing *Water Levels were measured within a 24 hour period beginning on 8/4/16 P:\Duke Energy Progress.1026\104. Lee Ash Basin GW Assessment\19.EG_CSASUP\tables\Table 1-7 Vertical Groundwater Gradients.xlsx Page 1 of 1 TABLE 1-8 BACKGROUND ANALYTICAL RESULTS H. F. LEE ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, GOLDSBORO, NC Analytical Parameter pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Alkalinity Aluminum Aluminum Aluminum Antimony Antimony Antimony Arsenic Arsenic Arsenic Barium Barium Barium Beryllium Beryllium Beryllium Bicarbonate Alkalinity Boron Boron Boron DIS DIS (0.1u) TOT DIS DIS (O.Su) TOT DIS DIS (0.1u) TOT DIS DIS (0.1u) TOT DIS DIS (0.1u) TOT DIS DIS (0.1u) TOT Reporting Units S.U. ft Deg C umhos/cm mg/L my my NTUs 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 ug/L ug/L ug/L ug/L mg/L ug/L ug/L ug/L 15A NCAC 02L Standard 6.5-8.5 NE NE NE NE NE NE NE NE NE NE NE NE NE NE 1 * NE NE 10 NE NE 700 NE NE 4 * NE NE NE 700 Sample ID Sample ate Collection D Field Parameters Analytical Results Active Ash Basin Surficial AMW-11S 03/02/2015 5.6 4.40 13 82 1.76 9 214 6.96 0 11 13 NA 51 <1 NA <1 <1 NA <1 15 NA 16 <1 NA <1 11 <50 NA <50 AMW-11S 06/11/2015 4.4 6.50 17 70 1.55 293 498 2.84 0 <10 103 NA 109 <1 NA <1 <1 NA <1 115 NA 119 <1 NA <1 <10 <50 NA <50 AMW-11S DUG 0611112015 4.4 6.50 17 70 1.55 293 498 2.84 0 <10 103 NA 110 <1 NA <1 <1 NA <1 117 NA 120 <1 NA <1 <10 <50 NA <50 AMW-11S 09/24/2015 5.3 8.55 19 56 2.4 193 398 5.34 NM NA 40 65 289 <1 <1 <1 <1 <1 <1 58 60 64 <1 <1 <1 NA <50 <50 <50 AMW-11S 12/04/2015 5.0 5.38 16 57 5 322 527 1.35 0 <5 59 NA 76 <1 NA <1 <1 NA <1 90 NA 95 <1 NA <1 <5 <50 NA <50 AMW-11S 01/12/2016 5.1 3.73 16 57 1.23 141 346 1.69 0 <5 94 NA 129 <1 NA <1 <1 NA <1 110 NA 119 <1 NA <1 <5 <50 NA <50 AMW-11S 03/01/2016 4.9 C 3.95 15 57 C 1.76 C 248 453 2.4 0 <5 138 NA 172 <1 NA <1 <1 NA <1 117 NA 124 <1 NA <1 <5 <50 NA <50 AMW-12S 03/02/2015 5.4 5.20 13 111 7.1 143 348 9.1 0.25 <10 207 NA 272 <1 NA <1 <1 NA <1 174 NA 177 <1 NA <1 <10 <50 NA <50 AMW-12S 06/10/2015 4.4 10.08 21 95 2.55 146 351 3.06 0 <10 1100 NA 1100 <1 NA <1 <1 NA <1 146 NA 152 <1 NA <1 <10 <50 NA <50 AMW-12S 12/04/2015 4.1 10.80 11 98 0.4 56 261 1.7 ND <5 11 NA 19 <1 NA <1 <1 NA <1 45 NA 47 <1 NA <1 <5 <50 NA <50 AMW-12S 01/11/2016 4.2 7.80 15 90 3.4 371 576 7.1 0 <5 815 NA 940 <1 NA <1 <1 NA <1 130 NA 137 <1 NA <1 <5 <50 NA <50 AMW-12S 03/01/2016 4.3 7.11 17 97 4.91 299 504 1.2 0 <5 801 NA 889 <1 NA <1 <1 NA <1 131 NA 130 <1 NA <1 <5 <50 NA <50 AMW-13S 0310312015 5.7 4.47 11 237 2.9 -117 88 60.5 0.25 43 <5 NA 3560 <1 NA <1 <1 NA <1 111 NA 136 <1 NA <1 43 <50 NA <50 AMW-13S 06/10/2015 5.2 12.19 21 200 2.18 176 381 4.06 0.5 26 5 NA 12 <1 NA <1 <1 NA <1 90 NA 96 <1 NA <1 26 <50 NA <50 AMW-13S 12/04/2015 5.9 8.90 18 86 4.6 99 304 1 ND 16.2 <5 NA 26 <1 NA <1 <1 NA <1 49 NA 52 <1 NA <1 16.2 <50 NA <50 AMW-13S 01/11/2016 6.7 3.08 16 211 1.92 98 303 3.46 NM 17.7 <5 NA 286 <1 NA <1 <1 NA <1 57 NA 73 <1 NA <1 17.7 <50 NA <50 AMW-13S 03/01/2016 5.6 3.75 16 84 5.61 212 417 7.7 0 13.6 <5 NA 159 <1 NA <1 <1 NA <1 53 NA 47 <1 NA <1 13.6 <50 NA <50 SMW-2 0912412013 5.5 NM 17 192 1.61 62 NM 22.4 NM 37.3 NA NA NA NA NA <0.34 NA NA 2.6 NA NA 23.9 NA NA NA NA NA NA 48.6 j SMW-2 06/16/2015 4.9 25.50 24 152 3.88 244 449 4.98 0 <10 282 NA 423 <1 NA <1 <1 NA <1 339 NA 338 <1 NA <1 <10 <50 NA <50 SMW-2 03/04/2016 4.7 24.35 10 154 6.69 260 465 9.7 0 <5 291 NA 611 <1 NA <1 <1 NA <1 430 NA 426 <1 NA <1 <5 <50 NA <50 Cape Fear AMW-11BC 03/02/2015 7.1 3.78 15 1498 0.15 -487 -282 9.9 3 51 14 NA 79 <1 NA <1 <1 NA <1 6 NA 6 <1 NA <1 51 <50 NA <50 AMW-11BC 06/11/2015 7.2 6.03 19 134 0.35 -168 38 4.62 0.5 51 9 NA 19 <1 NA <1 <1 NA <1 7 NA 6 <1 NA <1 51 <50 NA <50 AMW-11SC 09/24/2015 7.6 7.61 19 137 0.29 -230 -25 5.13 NM NA <5 29 164 <1 <1 <1 <1 <1 <1 5 5 6 <1 <1 <1 NA <50 <50 <50 AMW-116C 12/04/2015 7.2 4.90 13 161 0.24 -222 -17 2.63 1.6 60.2 5 NA 52 <1 NA <1 <1 NA <1 8 NA 8 <1 NA <1 60.2 <50 NA <50 AMW-11BC 01/12/2016 7.1 3.35 15 154 0.21 -171 34 6.55 0.5 60.6 10 NA 129 <1 NA <1 <1 NA <1 9 NA 9 <1 NA <1 60.6 <50 NA <50 AMW-11BC 03/01/2016 6.9 C 3.26 15 167 C 0.51 C -181 24 7.6 2.5 61.6 11 NA 34 <1 NA <1 <1 NA <1 10 NA 9 <1 NA <1 61.6 <50 NA <50 AMW-12BC 03/03/2015 6.2 6.45 10 175 0.5 -399 -194 5.73 3 36 6 NA 36 <1 NA <1 <1 NA <1 10 NA 11 <1 NA <1 36 <50 NA <50 AMW-12BC 06/10/2015 6.3 11.19 22 142 0.67 54 259 3.82 3 38 25 NA 31 <1 NA <1 <1 NA <1 12 NA 13 <1 NA <1 38 <50 NA <50 AMW-12BC 12/04/2015 6.2 11.90 11 112 0.6 -10 195 1 2 23.6 761 NA 838 <1 NA <1 <1 NA <1 128 NA 132 1.32 NA <1 23.6 <50 NA <50 AMW-12BC 01/11/2016 6.1 8.60 15 97 0.3 -43 163 1.8 3 31.5 16 NA 21 <1 NA <1 1.07 NA 1.12 37 NA 44 <1 NA <1 31.5 <50 NA <50 AMW-12BC 03/01/2016 6.3 7.82 16 120 0.62 3 208 0.8 3 22.4 14 NA 17 <1 NA <1 1 NA 1.17 41 NA 44 <1 NA <1 22.4 <50 NA <50 AMW-13BC 0310512015 8.9 4.54 18 360 0.07 -374 -169 69.2 1 110 15 NA 372 <1 NA <I <1 NA <1 153 NA 163 <1 NA <1 110 69 NA 70 AMW-13BC 06/10/2015 6.6 12.19 22 317 0.42 -85 120 8.24 4.5 100 27 NA 75 <1 NA <1 <1 NA <1 339 NA 342 <1 NA <1 100 72 NA 73 AMW-13BC 12/04/2015 7.2 9.23 15 309 0.5 -139 66 1 1 118 13 NA 69 <1 NA <1 <1 NA <1 276 NA 269 <1 NA <1 118 68 NA 67 AMW-13BC 01/11/2016 7.4 3.20 16 310 0.4 -129 76 1.84 1 114 19 NA 69 <1 NA <1 <1 NA <1 251 NA 255 <1 NA <1 114 73 j NA j 70 AMW-13BC 03/01/2016 7.1 3.96 17 311 0.3 -133 72 0.9 3 118 13 NA 31 <1 NA <1 <1 NA <1 286 NA 272 <1 NA <1 118 67 NA 68 Incctive Ash Basin Surficial IMW-015 05/26/2015[5�.4t4.72 20 172 0.43 66 271 8.9 2.5 12 18 NA 171 <1 NA <1 <1 NA <1 187 NA 194 <1 NA <1 12 <50 NA <50 IMW-01S 06/12/2015 19 166 0.53 205 410 1.73 2 11 33 NA 70 <1 NA <1 <1 NA <1 208 NA 206 <1 NA <1 11 <50 NA <50 IMW-015 09/24/2015 20 158 0.5 150 355 0.67 NM NA 36 37 97 <1 <1 <1 <1 <1 <1 197 197 208 <1 <1 <1 NA <50 <50 <50 P:\Duke Energy Progress. 1026\104. Lee Ash Basin GW Assessment\19.EG_CSASUP\tables\Table 1-8 Background Analytical Results.xlsx Page 1 of 8 TABLE 1-8 BACKGROUND ANALYTICAL RESULTS H. F. LEE ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, GOLDSBORO, NC Analytical Parameter Cadmium Cadmium Cadmium Calcium Carbonate Alkalinity Chloride Chromium (Hexavalent) Chromium Chromium Chromium Cobalt Cobalt Cobalt Copper Copper Copper Iron Iron Iron Lead Lead Lead Magnesium Manganese Manganese Manganese DIS DIS (0.1u) TOT TOT DIS DIS (0.1u) TOT DIS DIS (0.1u) TOT DIS DIS (0.1u) TOT DIS DIS (0.1u) TOT DIS DIS (0.1u) TOT TOT DIS DIS (0.1u) TOT Reporting Units ug/L 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 ug/L ug/L ug/L ug/L ug/L mg/L ug/L ug/L ug/L 15A NCAC 02L Standard NE NE 2 NE NE 250 NE NE NE 10 NE NE 1 * NE NE 1000 NE NE 300 NE NE 15 NE NE NE 50 Sample ID Sample Collection Date Analytical Results Active Ash Basin Surficial AMW-11S 03/02/2015 <1 NA <1 4.16 <10 11 NA <1 NA <1 12.1 NA 12.5 <1 NA <1 31 NA 252 <1 NA <1 1.64 454 NA 476 AMW-11S 06/11/2015 <1 NA <1 1.79 <10 12 NA <1 NA <1 8.69 NA 9.13 <1 NA <1 36 NA 60 <1 NA <1 1.87 134 NA 139 AMW-11S DUG 0611112015 <I NA <I 1.6 <10 12 NA <1 NA <1 8.58 NA 8.61 <1 NA <1 37 NA 57 <1 NA <1 1.82 135 NA 137 AMW-11S 09/24/2015 <1 <1 <1 1.41 NA NA NA <1 <1 <1 8.23 8.01 7.65 8.32 1.84 1.33 33 44 973 <1 <1 <1 1.11 144 148 131 AMW-11S 12/04/2015 <1 NA <1 1.19 <5 9.9 0.041 <1 NA <1 7.82 NA 7.96 1.33 NA <1 <10 NA 44 <1 NA <1 1.35 96 NA 96 AMW-11S 01/12/2016 <1 NA <1 1.26 <5 11 0.049 1.61 NA <1 7.03 NA 7.54 1.05 NA <1 14 NA 31 <1 NA <1 1.58 67 NA 74 AMW-11S 03/01/2016 <1 NA <1 1.13 <5 9.7 0.035 <1 NA <1 6.91 NA 6.76 1.21 NA <1 <10 NA 14 <1 NA <1 1.55 48 NA 45 AMW-12S 03/02/2015 <1 NA <1 4.22 <10 13 NA <1 NA <1 3.85 NA 4.05 1.25 NA 1.37 188 NA 333 <1 NA <1 3.21 65 NA 67 AMW-12S 06/10/2015 <1 NA <1 1.58 <10 11 NA <1 NA <1 2.93 NA 3.17 6.52 NA 5.61 10 NA 60 <1 NA <1 2.69 20 NA 20 AMW-12S 12/04/2015 <1 NA <1 4.54 <5 11 <0.03 <1 NA <1 <1 NA <1 <1 NA <1 8780 NA 8720 <1 NA <1 2.17 177 NA 176 AMW-12S 01/11/2016 <1 NA <1 1.64 <5 12 0.085 <1 NA <1 2.75 NA 2.91 5.83 NA 5.51 15 NA 209 <1 NA <1 2.32 18 NA 19 AMW-12S 03/01/2016 <1 NA <1 1.67 <5 12 0.088 <1 NA <1 3.02 NA 3.01 6.36 NA 5.22 <10 NA 50 <1 NA <1 2.3 18 NA 17 AMW-13S 0310312015 <1 NA <1 12.4 <10 28 NA <1 NA 3.78 30.8 NA 35.7 <1 NA 2.2 126 NA 2380 <1 NA <1 5.98 607 NA 727 AMW-13S 06/10/2015 <1 NA <1 5.42 <10 29 NA <1 NA <1 <1 NA <1 1.31 NA 4.81 44 NA 66 <1 NA <1 6.38 25 NA 26 AMW-13S 12/04/2015 <1 NA <1 2.7 <5 4.1 0.033 <1 NA <1 2.08 NA 2.29 <1 NA <1 <10 NA 34 <1 NA <1 2.95 13 NA 12 AMW-13S 01/11/2016 <1 NA <1 3.82 <5 13 0.095 <1 NA <1 6.72 NA 8.06 1.34 NA <1 <10 NA 122 <1 NA <1 3.96 19 NA 24 AMW-13S 03/01/2016 <1 NA <1 3.02 <5 5.5 0.094 <1 NA <1 1.54 NA 1.18 <1 NA <1 <10 NA 415 <1 NA <1 3.6 <5 NA <5 SMW-02 0912412013 NA NA <0.23 11.1 NA 27.3 NA NA NA <1.6 NA NA NA NA NA <2.7 NA NA 5040 NA NA 0.37 j 2.5 NA NA 133 SMW-02 06/16/2015 <1 NA <1 10.8 <10 16 NA <1 NA <1 1.7 NA 1.62 1.92 NA <1 <10 NA 100 <1 NA <1 5.04 62 NA 61 SMW-02 03/04/2016 <1 NA <1 10.8 <5 14 <0.03 <1 NA <1 2.38 NA 2.51 1.3 NA 1.46 <10 NA 129 <1 NA <1 4.6 68 NA 67 Cape Fear AMW-11BC 03/02/2015 <1 NA <1 12.3 <10 4.4 NA <1 NA <1 2.79 NA 2.75 <1 NA <1 6080 NA 6300 <1 NA <1 3.38 1190 NA 1220 AMW-11BC 06/11/2015 <1 NA <1 14.1 <10 4.5 NA <1 NA <1 <1 NA 1.05 <1 NA <1 2370 NA 3290 <1 NA <1 3.57 843 NA 983 AMW-11BC 09/24/2015 <1 <1 <1 14.8 NA NA NA <1 <1 <1 <1 <1 <1 <1 <1 <1 723 397 1460 <1 <1 <1 3.22 591 592 600 AMW-11BC 12/04/2015 <1 NA <1 15.5 <5 4.6 <0.03 <1 NA <1 <1 NA <1 <1 NA <1 4500 NA 4910 <1 NA <1 4.37 1320 NA 1380 AMW-11BC 01/12/2016 <1 NA <1 16.4 <5 4.3 <0.03 <1 NA <1 1.69 NA 1.41 <1 NA <1 6720 NA 6750 <1 NA <1 4.75 1480 NA 1520 AMW-11BC 03/01/2016 <1 NA <1 15.6 <5 4.1 <0.03 <1 NA <1 1.65 NA 1.23 <1 NA <1 7360 NA 7460 <1 NA <1 4.43 1520 NA 1560 AMW-12BC 03/03/2015 <1 NA <1 9.27 <10 14 NA <1 NA <1 1.13 NA 1.19 <1 NA <1 3100 NA 3260 <1 NA <1 2.54 275 NA 285 AMW-12BC 06/10/2015 <1 NA <1 6.21 <10 8.6 NA <1 NA <1 <1 NA <1 <1 NA <1 12200 NA 12600 <1 NA <1 2.28 278 NA 287 AMW-12BC 12/04/2015 <1 NA <1 1.5 <5 8.1 0.054 <1 NA <1 2.66 NA 2.46 5.44 NA 5.23 <10 NA 75 <1 NA <1 2.19 16 NA 16 AMW-12BC 01/11/2016 <1 NA <1 4.34 <5 8.5 <0.03 <1 NA <1 <1 NA <1 <1 NA <1 8890 NA 9280 <1 NA <1 2.03 173 NA ISO AMW-12BC 03/01/2016 <1 NA <1 4.23 <5 8.5 <0.03 <1 NA <1 <1 NA <1 <1 NA <1 8660 NA 9020 <1 NA <1 1.98 168 NA 167 AMW-13BC 0310512015 <1 NA <1 46.3 <10 24 NA <1 NA <1 <1 NA <1 <1 NA 1.63 770 NA 3620 <1 NA <1 5.18 36 NA 43 AMW-13BC 06/10/2015 <1 NA <1 31.6 <10 16 NA <1 NA <1 <1 NA <1 <1 NA <1 10600 NA 10800 <1 NA <1 7.65 97 NA 99 AMW-13BC 12/04/2015 <1 NA <1 30.3 <5 16 <0.03 <1 NA <1 <1 NA <1 <1 NA <1 9720 NA 9880 <1 NA <1 6.32 121 NA 118 AMW-13BC 01/11/2016 <1 NA <1 32.9 <5 17 <0.03 <1 NA <1 <1 NA <1 <1 NA <1 8680 NA 8750 <1 NA <1 6.55 126 NA 126 AMW-13BC Incctive Ash 03/01/2016 Basin <1 NA <1 32.1 <5 17 <0.03 <1 NA <1 <1 NA <1 <1 NA <1 8860 NA 9100 <1 NA <1 6.68 112 NA 117 Surficial IMW-01S 05/26/2015 <1 NA <1 8.86 <10 19 NA <1 NA <1 6.47 NA 6.21 <1 NA <1 2980 NA 3150 <1 NA <1 6.09 272 NA 258 IMW-01S 06/12/2015 <1 NA <1 9.73 <10 18 NA <1 NA <1 4.27 NA 4.36 13 NA <1 2090 NA 2230 1.71 NA <1 6.55 217 NA 234 IMW-015 09/24/2015 <1 <1 <1 8.56 NA NA NA <1 <1 <1 2.68 2.5 2.43 <1 <1 <1 172 183 195 <1 <1 <1 5.65 101 101 102 P:\Duke Energy Progress. 1026\104. Lee Ash Basin GW Assessment\19.EG_CSASUP\tables\Table 1-8 Background Analytical Results.xlsx Page 2 of 8 TABLE 1-8 BACKGROUND ANALYTICAL RESULTS H. F. LEE ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, GOLDSBORO, NC Analytical Parameter Mercury Mercury Mercury Methane Molybdenum Molybdenum Molybdenum Nickel Nickel Nickel Nitrate (as N) Potassium Selenium Selenium Selenium Sodium Strontium Strontium Strontium Sulfate Sulfide Thallium Thallium Thallium DIS DIS (0.1u) TOT DIS DIS (0.1u) TOT DIS DIS (0.1u) TOT TOT DIS DIS (0.1u) TOT TOT DIS DIS (0.1u) TOT DIS DIS (0.1u) TOT Reporting Units ug/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 ug/L mg/L ug/L ug/L ug/L mg/L mg/L ug/L ug/L ug/L 15A NCAC 02L Standard NE NE 1 NE NE NE NE NE NE 100 10 NE NE NE 20 NE NE NE NE 250 NE NE NE 0.2 Sample ID Sample ate Collection D Analytical Results Active Ash Basin Surficial AMW-11S 03/02/2015 <0.05 NA <0.05 <10 <1 NA <1 4.39 NA 4.53 0.151 1.32 <1 NA <1 6.3 32 NA 32 5.7 <0.5 <0.2 NA <0.2 AMW-11S 06/11/2015 <0.05 NA <0.05 <10 <1 NA <1 3.49 NA 3.52 0.025 1.26 <1 NA <1 6.09 31 NA 31 6.2 <0.1 <0.2 NA <0.2 AMW-11S DUP 0611112015 <0.05 NA <0.05 <10 <1 NA <1 3.25 NA 3.07 0.023 1.23 <1 NA <I 5.98 32 NA 31 5.8 <0.1 <0.2 NA <0.2 AMW-11S 09/24/2015 <0.05 <0.05 <0.05 NA <1 <1 <1 4.3 4.03 4.53 NA 0.741 <1 <1 <1 5.64 17 M1 18 M1 17 NA NA <0.2 <0.2 <0.2 AMW-11S 12/04/2015 <0.05 NA <0.05 <10 <1 NA <1 3.52 NA 3.73 0.075 0.964 <1 NA <1 4.92 23 NA 23 5.4 <0.1 <0.2 NA <0.2 AMW-11S 01/12/2016 <0.05 NA <0.05 <10 <1 NA <1 4.58 NA 3.83 0.084 1.07 <1 NA <1 5.14 24 NA 24 4.8 <0.1 <0.2 NA <0.2 AMW-11S 03/01/2016 <0.05 NA <0.05 <10 <1 NA <1 3.5 NA 3.18 0.216 1.18 <1 NA <1 4.47 24 NA 24 5.8 <0.1 <0.2 NA <0.2 AMW-12S 03/02/2015 <0.05 NA <0.05 <10 1.19 NA 1.34 5.56 NA 5.34 4.5 2.56 <1 NA <1 6.6 59 NA 59 3.2 <0.5 <0.2 NA <0.2 AMW-12S 06/10/2015 <0.05 NA <0.05 10 <1 NA <1 3.7 NA 4.21 4.2 2.47 <1 NA <1 4.25 26 NA 26 4.9 <0.1 0.289 NA <0.2 AMW-12S 12/04/2015 <0.05 NA <0.05 <10 <1 NA <1 1.77 NA 2.1 4.3 0.745 <1 NA <1 7.82 28 NA 28 6.4 <0.2 <0.2 NA <0.2 AMW-12S 01/11/2016 <0.05 NA <0.05 <10 <1 NA <1 3.66 NA 3.69 3.9 2.29 <1 NA <1 4.08 25 NA 24 4 <0.1 <0.2 NA <0.2 AMW-12S 03/01/2016 <0.05 NA <0.05 <10 <1 NA <1 3.78 NA 3.55 4.2 2.22 <1 NA <1 4.06 24 NA 23 2.4 <0.1 <0.2 NA <0.2 AMW-13S 0310312015 <0.05 NA <0.05 <10 <1 NA <1 10.6 NA 12.5 <0.01 0.474 <1 NA <1 22.7 73 NA 78 14 <0.1 <0.2 NA <0.2 AMW-13S 06/10/2015 <0.05 NA <0.05 <10 <1 NA <1 7.15 NA 7.28 0.023 0.197 <1 NA <1 20.3 64 NA 66 16 <0.1 <0.2 NA <0.2 AMW-13S 12/04/2015 <0.05 NA <0.05 <10 CL <1 NA <1 4.05 NA 3.99 0.081 0.1 <1 NA <1 8.51 30 NA 30 15 <0.1 <0.2 NA <0.2 AMW-13S 01/11/2016 <0.05 NA <0.05 <10 <1 NA <1 7.72 NA 8.73 0.041 0.158 <1 NA <1 12 38 NA 42 18 <0.1 <0.2 NA <0.2 AMW-13S 03/01/2016 <0.05 NA <0.05 <10 <1 NA <1 3.89 NA 3.58 0.453 0.14 <1 NA <1 7.21 38 NA 34 15 <0.1 <0.2 NA <0.2 SMW-02 0912412013 NA NA <0.06 NA NA NA NA NA NA 1.8 j 0.61 5.73 NA NA <0.5 23.4 NA NA NA 27.8 NA NA NA <0.15 SMW-02 06/16/2015 <0.05 NA <0.05 <10 <1 NA <1 1.85 NA 2.02 8.5 3.33 <1 NA <1 3.95 94 NA 93 4.3 <0.1 <0.2 NA <0.2 SMW-02 03/04/2016 <0.05 NA <0.0-5 <10 <1 NA <1 2.35 NA 2.73 9.3 4.09 <1 NA <1 3.6 88 NA 85 7 <0.1 <0.2 NA <0.2 Cape Fear AMW-11BC 03/02/2015 <0.05 NA <0.05 19 1.25 NA 1.36 <1 NA 1.26 0.013 0.691 <1 NA <1 6.19 28 NA 29 1.8 <0.1 <0.2 NA <0.2 AMW-11BC 06/11/2015 <0.05 NA <0.05 21 1.86 NA 1.63 <1 NA <1 <0.01 0.781 <1 NA <1 6.56 33 NA 33 <0.1 <0.1 <0.2 NA <0.2 AMW-11BC 09/24/2015 <0.05 <0.05 <0.05 NA 2.55 2.5 2.44 <1 <1 <1 NA 0.851 <1 <1 <1 7.54 36 37 37 NA NA <0.2 <0.2 <0.2 AMW-11BC 12/04/2015 <0.05 NA <0.05 1130 2.04 NA 2.05 <1 NA <1 <0.01 0.671 <1 NA <1 6.29 40 NA 39 <0.1 <0.1 <0.2 NA <0.2 AMW-11BC 01/12/2016 <0.05 NA <0.05 1160 1.46 NA 1.52 <1 NA <1 0.016 0.701 <1 NA <1 5.84 37 NA 39 <0.1 <0.1 <0.2 NA <0.2 AMW-11BC 03/01/2016 <0.05 NA <0.05 1670 1.34 NA 1.55 <1 NA <1 0.055 0.666 <1 NA <1 5.34 38 NA 38 <0.1 <0.1 <0.2 NA <0.2 AMW-12BC 03/03/2015 <0.05 NA <0.05 24 <1 NA <1 2.02 NA 2.2 <0.02 2.19 <1 NA <1 16.5 44 NA 46 17 <0.5 <0.2 NA <0.2 AMW-12BC 06/10/2015 <0.05 NA <0.05 14 <1 NA <1 <1 NA <1 0.025 0.875 <1 NA <1 11.3 33 NA 34 8.4 0.201 <0.2 NA <0.2 AMW-12BC 12/04/2015 <0.05 NA <0.05 <10 CL <1 NA <1 3.1 NA 3.25 <0.01 2.22 <1 NA <1 3.78 23 NA 23 8.5 <0.1 <0.2 NA <0.2 AMW-12BC 01/11/2016 <0.05 NA <0.05 <10 <1 NA <1 1.65 NA 1.98 0.019 0.701 <1 NA <1 10.4 26 NA 26 9.8 <0.1 <0.2 NA <0.2 AMW-12BC 03/01/2016 <0.05 NA <0.05 <10 <1 NA <1 1.52 NA 1.81 <0.01 0.742 <1 NA <1 10.5 25 NA 24 11 <0.1 <0.2 NA <0.2 AMW-13BC 0310512015 <0.05 NA <0.05 <10 2.85 NA 2.28 <1 NA 2.21 <0.01 2.48 <1 NA <1 22.4 151 NA 151 16 <0.1 <0.2 NA <0.2 AMW-13BC 06/10/2015 <0.05 NA <0.05 30 <1 NA <1 <1 NA 1.11 <0.01 1.59 <1 NA <1 15.8 124 NA 125 5.7 <0.1 <0.2 NA <0.2 AMW-13BC 12/04/2015 <0.05 NA <0.05 172 CL <1 NA <1 <1 NA <1 <0.01 1.57 <1 NA <1 14.7 139 NA 134 3.8 <0.2 <0.2 NA <0.2 AMW-13BC 01/11/2016 <0.05 NA <0.05 1030 <1 NA <1 <1 NA <1 0.015 1.46 <1 NA <1 15.9 139 NA 142 0.28 <0.1 <0.2 NA <0.2 AMW-13BC 03/01/2016 <0.05 NA <0.05 848 <1 NA <1 <1 NA <1 <0.01 1.47 <1 NA <1 15 135 NA 132 1 <0.1 <0.2 NA <0.2 Incctive Ash Basin Surficial IMW-01S 05/26/2015 <0.05 NA <0.05 <10 <1 NA <1 3.64 NA 3.8 2.7 1.58 <1 NA 1.14 7.78 118 NA 115 24 <0.1 <0.2 NA <0.2 IMW-01S 06/12/2015 <0.05 NA <0.05 <10 <1 NA <1 3.84 NA 3.61 3.2 1.72 <1 NA <1 7.8 122 NA 123 25 <0.1 10.2 NA <0.2 IMW-01S 09/24/2015 <0.05 <0.05 <0.05 NA <1 <1 <1 2.79 2.91 2.92 NA 1.8 <1 <1 <1 7.22 122 121 125 NA NA <0.2 <0.2 <0.2 P:\Duke Energy Progress. 1026\104. Lee Ash Basin GW Assessment\19.EG_CSASUP\tables\Table 1-8 Background Analytical Results.xlsx Page 3 of 8 TABLE 1-8 BACKGROUND ANALYTICAL RESULTS H. F. LEE ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, GOLDSBORO, NC Analytical Parameter Total Dissolved Solids Total Organic Carbon Total Suspended Solids Vanadium Vanadium Vanadium Zinc Zinc Zinc Radium-226 Radium-228 Uranium-233 Uranium-234 Uranium-236 Uranium-238 As(III) As(V) MMAs DMAs Fe(II) Fe(III) Mn(II) Mn(IV) DIS DIS (0.1u) TOT DIS DIS (0.1u) TOT Reporting Units mg/L mg/L mg/L ug/L ug/L ug/L ug/L ug/L ug/L pCi/I pCi/I ug/mL ug/mL ug/mL ug/mL ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L SSA NCAC 02L Standard 500 NE NE NE NE 0.3 * NE NE 1000 NE NE NE NE NE NE NE NE NE NE NE NE NE NE Sample ID Sample ate Collection D Analytical Results Active Ash Basin Ur Surficial AMW-11S 03/02/2015 55 0.754 5 <0.3 NA <0.3 6 NA 6 NA NA NA NA NA NA NA NA NA NA NA NA NA NA AMW-11S 06/11/2015 48 0.655 <5 <0.3 NA <0.3 7 NA 7 NA NA NA NA NA NA 0.199 <0.028 <0.053 <0.083 11.8 6.1 140 <0.45 AMW-11S DUP 0611112015 47 0.687 <5 <0.3 NA <0.3 8 NA 6 NA NA NA NA NA NA NA NA NA NA NA NA NA NA AMW-11S 09/24/2015 NA NA NA <0.3 0.422 0.56 20 12 13 NA NA NA NA NA NA NA NA NA NA NA NA NA NA AMW-11S 12/04/2015 32 0.595 <5 <0.3 NA <0.3 8 NA 8 NA NA NA NA NA NA NA NA NA NA NA NA NA NA AMW-11S 01/12/2016 41 0.513 <5 <0.3 NA <0.3 10 NA 9 NA NA NA NA NA NA NA NA NA NA NA NA NA NA AMW-11S 03/01/2016 28 0.572 <5 <0.3 NA <0.3 7 NA 9 <1 <3 <0.00005 <0.00005 <0.00005 <0.0002 NA NA NA NA NA NA NA NA AMW-12S 03/02/2015 72 0.456 <5 <0.3 NA <0.3 19 NA 20 NA NA NA NA NA NA NA NA NA NA NA NA NA NA AMW-12S 06/10/2015 56 0.39 <5 <0.3 NA <0.3 13 NA 14 12 11.4 <0.00005 <0.00005 <0.00005 0.00224 <0.0495 <0.0279 <0.053 <0.083 9.091647 <5 20.60864 1.820374 AMW-12S 12/04/2015 43 0.43 <5 <0.3 NA <0.3 <5 NA <5 NA NA NA NA NA NA NA NA NA NA NA NA NA NA AMW-12S 01/11/2016 41 0.366 <5 <0.3 NA 0.471 20 NA 12 NA NA NA NA NA NA NA NA NA NA NA NA NA NA AMW-12S 03/01/2016 40 0.391 <5 <0.3 NA <0.3 14 NA 12 5.05 12.7 <0.00005 <0.00005 <0.00005 0.002 NA NA NA NA NA NA NA NA AMW-13S 0310312015 210 1.7 13 0.487 NA 6.71 20 NA 22 NA NA NA NA NA NA NA NA NA NA NA NA NA NA AMW-13S 06/10/2015 140 1.6 <5 <0.3 NA <0.3 10 NA 12 NA NA NA NA NA NA <0.0495 <0.0279 <0.053 <0.083 11.36456 6.553889 25.50007 <0.158496 AMW-13S 12/04/2015 83 0.333 <5 <0.3 NA <0.3 11 NA 13 NA NA NA NA NA NA NA NA NA NA NA NA NA NA AMW-13S 01/11/2016 86 0.448 <5 <0.3 NA 0.398 23 NA 25 NA NA NA NA NA NA NA NA NA NA NA NA NA NA AMW-13S 03/01/2016 67 0.657 <5 <0.3 NA 0.59 14 NA 25 0.672 <3 <0.00005 <0.00005 <0.00005 <0.0002 NA NA NA NA NA NA NA NA SMW-02 0912412013 152 NA NA NA NA NA NA NA 65.4 NA NA NA NA NA NA NA NA NA NA NA NA NA NA SMW-02 06/16/2015 110 1 <5 <0.3 NA 0.307 18 NA 16 NA NA NA NA NA NA NA NA NA NA NA NA NA NA SMW-02 03/04/2016 120 0.77 15 <0.3 NA 0.402 20 NA 15 NA NA NA NA NA NA NA NA NA NA NA NA NA NA Cape Fear AMW-11BC 03/02/2015 <250 0.76 <5 <0.3 NA <0.3 <5 NA <5 NA NA NA NA NA NA NA NA NA NA NA NA NA NA AMW-11BC 06/11/2015 86 8 7 <0.3 NA <0.3 <5 NA <5 NA NA NA NA NA NA 0.117 <0.028 <0.053 <0.083 2470 <250 893 <0.45 AMW-118C 09/24/2015 NA NA NA <0.3 0.37 <0.3 <5 <5 <5 NA NA NA NA NA NA NA NA NA NA NA NA NA NA AMW-11BC 12/04/2015 83 7.2 10 <0.3 NA <0.3 <5 NA <5 NA NA NA NA NA NA NA NA NA NA NA NA NA NA AMW-11BC 01/12/2016 92 5 12 <0.3 NA <0.3 <5 NA <5 NA NA NA NA NA NA NA NA NA NA NA NA NA NA AMW-11BC 03/01/2016 78 4.2 13 <0.3 NA <0.3 <5 NA <5 0.469 <3 <0.00005 <0.00005 <0.00005 <0.0002 NA NA NA NA NA NA NA NA AMW-12BC 03/03/2015 110 0.566 <5 <0.3 NA <0.3 6 NA 6 NA NA NA NA NA NA NA NA NA NA NA NA NA NA AMW-12BC 06/10/2015 87 0.579 <5 <0.3 NA <0.3 <5 NA <5 <1 <3 <0.00005 <0.00005 <0.00005 <0.0002 0.3518457 0.1161051 <0.053 <0.083 11600 270 277.8658 10.69757 AMW-12BC 12/04/2015 68 0.268 <5 <0.3 NA <0.3 22 NA 17 NA NA NA NA NA NA NA NA NA NA NA NA NA NA AMW-12BC 01/11/2016 65 0.233 <5 <0.3 NA <0.3 <5 NA <5 NA NA NA NA NA NA NA NA NA NA NA NA NA NA AMW-12BC 03/01/2016 81 0.346 <5 <0.3 NA <0.3 <5 NA <5 0.691 <3 <0.00005 <0.00005 <0.00005 <0.0002 NA NA NA NA NA NA NA NA AMW-13BC 0310512015 200 2.4 33 <0.3 NA 0.962 <5 NA 8 NA NA NA NA NA NA NA NA NA NA NA NA NA NA AMW-13BC 06/10/2015 170 1.4 12 <0.3 NA 0.324 <5 NA <5 NA NA NA NA NA NA 0.544365 <0.0279 <0.053 <0.083 10000 527.0881 102.3817 1.492813 AMW-13BC 12/04/2015 170 0.98 21 <0.3 NA <0.3 <5 NA <5 NA NA NA NA NA NA NA NA NA NA NA NA NA NA AMW-13BC 01/11/2016 170 1.3 15 <0.3 NA <0.3 10 NA <5 NA NA NA NA NA NA NA NA NA NA NA NA NA NA AMW-13BC 03/01/2016 160 1 22 <0.3 NA <0.3 <5 NA <5 0.959 <3 <0.00005 <0.00005 <0.00005 <0.0002 NA NA NA NA NA NA NA NA Incctive Ash Basin Surficial IMW-01S 05/26/2015 97 0.732 5 <0.3 NA 0.627 21 NA 14 NA NA NA NA NA NA NA NA NA NA NA NA NA NA IMW-01S 06/12/2015 110 1 <5 <0.3 NA <0.3 33 NA 77 NA NA NA NA NA NA NA NA NA NA NA NA NA NA IMW-01S 09/24/2015 NA NA NA <0.3 <0.3 <0.3 15 12 16 NA NA NA NA NA NA NA NA NA NA NA NA NA NA P:\Duke Energy Progress. 1026\104. Lee Ash Basin GW Assessment\19.EG_CSASUP\tables\Table 1-8 Background Analytical Results.xlsx Page 4 of 8 TABLE 1-8 BACKGROUND ANALYTICAL RESULTS H. F. LEE ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, GOLDSBORO, NC Analytical Parameter PN Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Alkalinity Aluminum Aluminum Aluminum Antimony Antimony Antimony Arsenic Arsenic Arsenic Barium Barium Barium Beryllium Beryllium Beryllium Bicarbonate Alkalinity Boron Boron Boron DIS DIS (0.1u) TOT DIS DIS (O.Su) TOT DIS DIS (0.1u) TOT DIS DIS (0.1u) TOT DIS DIS (0.1u) TOT DIS DIS (0.1u) TOT Reporting Units S.U. ft Deg C umhos/cm mg/L my my NTUs 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 ug/L ug/L ug/L ug/L mg/L ug/L ug/L ug/L 15A NCAC 02L Standard 6.5-8.5 NE NE NE NE NE NE NE NE NE NE NE NE NE NE 1 * NE NE 10 NE NE 700 NE NE 4 * NE NE NE 700 Sample ID Sample Collection Date Field Parameters Analytical Results IMW-0is 12/06/2015 5.5 3.63 17 283 0.96 103 308 7.35 1 7.6 <100 NA 110 <0.5 NA <0.5 <0.5 NA <0.5 190 NA 190 0.64 NA 0.44 7.6 <50 NA <50 IMW-015 03/01/2016 5.1 3.53 16 152 1.6 94 299 7.7 0.3 <5 20 NA 67 <1 NA <1 <1 NA <1 195 NA 188 1.04 NA <1 <5 <50 NA <50 IMW-03S 05/28/2015 5.8 3.28 21 136 4.13 47 252 9.54 1.5 50 21 NA 76 <1 NA <1 <1 NA <1 157 NA 154 <1 NA <1 50 <50 NA <50 IMW-03S 06/16/2015 5.7 3.40 26 135 2.23 -44 161 4.62 2.5 56 20 NA 22 <1 NA <1 <1 NA <1 148 NA 142 <1 NA <1 56 <50 NA <50 IMW-03S 12/06/2015 6.4 1.45 14 215 0.4 -46 159 3.82 3 91 <100 NA <100 <0.5 NA <0.5 0.52 NA <0.5 230 NA 230 <0.2 NA <0.2 91 <50 NA <50 IMW-03S 0111312016 5.4 1.40 14 150 0.3 -66 139 55.7 7 79.5 46 NA 115 <1 NA <1 <1 NA <1 235 NA 236 <1 NA <1 79.5 <50 NA <50 IMW-03S 03/02/2016 6.3 1.38 16 165 0.49 165 370 14.5 7 65.7 34 NA 33 <1 NA <1 <1 NA <1 192 NA 188 <1 NA <1 65.7 <50 NA <50 Cape Fear IMW-01BC 05/27/2015 6.4 4.25 21 427 2.82 147 352 9.43 0 70 <5 NA 15 <1 NA <1 <1 NA <1 90 NA 95 <1 NA <1 70 151 NA 156 IMW-01BC 06/12/2015 6.7 4.63 22 419 2.13 203 408 2.66 0 74 <5 NA 14 <1 NA <1 <1 NA <1 96 NA 101 <1 NA <1 74 166 NA 171 IMW-01BC 09/24/2015 6.8 6.97 20 451 0.4 -76 129 2.1 NM NA 6 9 35 <1 <1 <1 <1 <1 <1 95 94 98 <1 <1 <1 NA 160 160 164 IMW-01BC 12/06/2015 7.0 3.40 16 478 0.3 -90 115 1.84 2.5 83 <100 NA <100 <0.5 NA <0.5 <0.5 NA 0.67 96 NA 100 <0.2 NA <0.2 83 160 NA 150 IMW-01BC 01/12/2016 6.8 3.20 14 250 0.4 -80 125 3.7 5 82.7 <5 NA 55 <1 NA <1 <1 NA <1 95 NA 108 <1 NA <1 82.7 150 NA 158 IMW-01BC 03/04/2016 6.9 3.36 8 447 0.79 143 348 9.7 0 89.9 <5 NA 39 <1 NA <1 <1 NA <1 96 NA 96 <1 NA <1 89.9 157 NA 156 IMW-02BC 05/26/2015 7.8 3.61 23 521 0.7 -137 68 12 0 130 16 NA 78 <1 NA <1 1.55 NA 1.61 39 NA 41 <1 NA <1 130 291 NA 293 IMW-02BC 0611212015 8.0 3.80 23 587 0.46 124 329 15.8 0 180 18 NA 410 <1 NA <1 1.81 NA 2.21 37 NA 39 <1 NA <1 170 337 NA 331 IMW-02BC 12/06/2015 7.7 3.76 15 616 0.5 -120 85 7.33 0 186 <100 NA 240 <0.5 NA 0.56 1.3 NA 1.5 43 NA 45 <0.2 NA <0.2 186 320 NA 320 IMW-02BC 01/13/2016 8.0 3.51 10 600 0.65 108 313 7.96 0 197 13 NA 243 <1 NA <1 1.32 NA 1.69 43 NA 42 <1 NA <1 197 306 NA 308 IMW-02BC 03/03/2016 8.2 3.75 14 610 0.36 -210 -5 9.98 0 198 30 NA 682 <1 NA <1 1.23 NA 1.36 33 NA 34 <1 NA <1 195 313 NA 315 IMW-03BC 05/27/2015 6.3 3.06 26 198 2.57 33 238 17 1 82 <5 NA 31 <1 NA <1 <1 NA <1 262 NA 267 <1 NA <1 82 60 NA 56 IMW-03BC 06/16/2015 6.2 3.32 22 186 1.76 -12 193 3.15 1 84 <5 NA 11 <1 NA <1 <1 NA <1 263 NA 258 <1 NA <1 84 59 NA 52 IMW-03BC 12/06/2015 6.4 1.57 13 198 0.6 -43 162 4.16 2.5 83.6 M1 <100 NA <100 <0.5 NA <0.5 0.51 NA 0.5 310 NA 320 <0.2 NA <0.2 83.6 52 NA 51 IMW-03BC 01/13/2016 6.8 1.50 15 122 5.6 2 207 9.5 3 85 7 NA 22 <1 NA <1 <1 NA <1 282 NA 273 <1 NA <1 85 56 NA 58 IMW-03BC 0310412016 6.8 1.55 11 281 0.27 -65 1 140 41.6 6.5 99.1 18 NA 31 <1 NA <1 <1 NA <1 295 NA 298 <1 NA <1 99.1 56 NA 57 Notes: - Bold highlighted concentration indicates exceedance of the 15A NCAC 02L Standard, Appendix 2, April 1, 2013. Spec Cond = 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 ft = Feet mg/L = Milligram per liter my = Millivolts NA = Not analyzed ug/L = Microgram per liter mg - N/L = Milligram nitrogen per liter NO = Not detected < = Concentration not detected at or above the reporting limit * = Interim Maximum Allowable Concentrations (IMACs) of the 15A NCAC 02L Standard, Appendix 1, April 1, 201: DIS = Dissolved Temp = Temperature TOT= Total b = Target analyte detected in method blank at or above the reporting limit. C = Associated midday/end of day field parameter calibration not within range. CL = The continuing calibration for this compound is outside of Pace Analytical acceptance limits. CR = The dissolved metal result was greater than the total metal result for this element. Results were confirmed by reanalysis. 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. M1 = Matrix spike recovery was high: the associated Laboratory Control Spike (LCS) was acceptable. N1 = This sample was inadvertently collected with sample running through the flow cell and should be considered invalid based on possible contamination from the flow cell. RI = RPD value was outside control limits. Data not used in provisional background concentration determinations. DO = Dissolved oxygen ORP = Oxidation -Reduction Potential Eh = Redox Potential NM = Not measured pCi/I = picocuries per liter P:\Duke Energy Progress. 1026\104. Lee Ash Basin GW Assessment\19.EG_CSASUP\tables\Table 1-8 Background Analytical Results.xlsx Page 5 of 8 TABLE 1-8 BACKGROUND ANALYTICAL RESULTS H. F. LEE ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, GOLDSBORO, NC Analytical Parameter Cadmium Cadmium Cadmium Calcium Carbonate Alkalinity Chloride Chromium (Hexavalent) Chromium Chromium Chromium Cobalt Cobalt Cobalt Copper Copper Copper Iron Iron Iron Lead Lead Lead Magnesium Manganese Manganese Manganese DIS DIS (0.1u) TOT TOT DIS DIS (0.1u) TOT DIS DIS (0.1u) TOT DIS DIS (0.1u) TOT DIS DIS (0.1u) TOT DIS DIS (0.1u) TOT TOT DIS DIS (0.1u) TOT Reporting Units ug/L 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 ug/L ug/L ug/L ug/L ug/L mg/L ug/L ug/L ug/L 15A NCAC 02L Standard NE NE 2 NE NE 250 NE NE NE 10 NE NE 1 * NE NE 1000 NE NE 300 NE NE 15 NE NE NE 50 Sample ID Sample Collection Date Analytical Results IMW-01S 12/06/2015 0.12 NA 0.12 b 8.76 <5 17.6 <0.03 <0.5 NA <0.5 3.9 NA 3.4 <1 NA <1 1200 NA 2100 <0.1 NA 0.15 5.55 130 NA 130 IMW-01S 03/01/2016 <1 NA <1 8.99 <5 19 0.11 <1 NA <1 3.83 NA 3.86 <1 NA <1 342 NA 1290 <1 NA <1 5.25 129 NA 131 IMW-03S 05/28/2015 <1 NA <1 8.05 <10 5 NA <1 NA <1 12.1 NA 13.3 <1 NA <1 4070 NA 4220 <1 NA <1 3.59 567 NA 556 IMW-03S 06/16/2015 <1 NA <1 10.1 <10 4.5 NA <1 NA <1 12.9 NA 12.2 <1 NA <1 5690 NA 6320 <1 NA <1 4.56 693 NA 722 IMW-03S 12/06/2015 <0.08 NA <0.08 15 <5 5 <0.03 <0.5 NA <0.5 15.9 NA 14.9 2.7 NA <1 27500 NA 25900 1.9 CR NA <0.1 6.62 860 NA 880 IMW-03S 0111312016 <1 NA <1 15.9 <5 5 <0.03 <1 NA 5.42 16 NA 16.2 <1 NA <1 31400 NA 35100 <1 NA <1 7.37 778 NA 822 IMW-03S 03/02/2016 <1 NA <1 12 <5 5.5 <0.03 <1 NA <1 10.2 NA 9.9 <1 NA <1 14900 NA 14700 <1 NA <1 5.66 565 NA 571 Cape Fear IMW-01BC 05/27/2015 <1 NA <1 16.5 <10 66 NA <1 NA 1.52 <1 NA <1 <1 NA <1 <10 NA 147 <1 NA <1 3.29 56 NA 59 IMW-01BC 06/12/2015 <1 NA <1 17.3 <10 70 NA <1 NA <1 <1 NA <1 12.9 NA <1 16 NA 98 1.62 NA <1 3.52 66 NA 66 IMW-01BC 09/24/2015 <1 <1 <1 18.2 NA NA NA <1 <1 <1 <1 <1 <1 <1 <1 <1 4030 4010 4380 <1 <1 <1 3.73 Ill 110 111 IMW-01BC 12/06/2015 <0.08 NA <0.08 18 <5 73.2 <0.03 <0.5 NA <0.5 0.84 NA 0.73 <1 NA <1 4000 NA 6500 <0.1 NA <0.1 3.82 110 NA 110 IMW-01BC 01/12/2016 <1 NA <1 17.7 <5 74 <0.03 <1 NA <1 <1 NA <1 <1 NA <1 2560 NA 5490 <1 NA <1 3.66 127 NA 132 IMW-01BC 03/04/2016 <1 NA <1 14.7 <5 74 <0.03 <1 NA <1 <1 NA <1 <1 NA <1 118 NA 583 <1 NA <1 3.11 81 NA 80 IMW-02BC 05/26/2015 <1 NA <1 16.2 <10 64 NA <1 NA <1 <1 NA <1 <1 NA <1 110 NA 364 <1 NA <1 4.74 34 NA 38 IMW-02BC 0611212015 <1 NA <1 16 <10 69 NA <1 NA <1 <1 NA <1 <1 NA <1 80 NA 771 <1 NA <1 4.86 47 NA 50 IMW-02BC 12/06/2015 <0.08 NA <0.08 17.9 <5 70.7 <0.03 <0.5 NA <0.5 <0.5 NA <0.5 2.2 NA <1 150 NA 660 <0.1 NA <0.1 5.43 68 NA 75 IMW-02BC 01/13/2016 <1 NA <1 15.4 <5 72 <0.03 <1 NA 2.24 <1 NA <1 <1 NA <1 174 NA 572 <1 NA <1 4.47 55 NA 47 IMW-02BC 03/03/2016 <1 NA <1 11 <5 76 0.036 <1 NA <1 <1 NA <1 <1 NA <1 69 NA 745 <1 NA <1 3.12 25 NA 25 IMW-03BC 05/27/2015 <1 NA <1 25.9 <10 3.1 NA <1 NA <1 <1 NA <1 <1 NA <1 939 NA 1510 <1 NA <1 3.52 78 NA 79 IMW-03BC 06/16/2015 <1 NA <1 24.6 <10 3 NA <1 NA <1 <1 NA <1 <1 NA <1 647 NA 994 <1 NA <1 3.7 88 NA 86 IMW-03BC 12/06/2015 <0.08 NA <0.08 24.7 <5 3 <0.03 <0.5 NA <0.5 1.4 NA 1.2 1.1 NA <1 9000 NA 9700 <0.1 NA <0.1 3.73 160 NA 150 IMW-03BC 01/13/2016 <1 NA <1 24.3 <5 3.3 <0.03 <1 NA <1 <1 NA <1 <1 NA <1 3580 NA 1800 <1 NA <1 3.61 74 NA 45 IMW-03BC 0310412016 <1 NA <1 26.8 <5 3.6 <0.03 <1 NA <1 1.27 NA 1.31 <1 NA <1 8000 NA 10900 <1 NA <1 3.91 163 NA 158 Notes: 7-1 - Bold highlighted concentration indicates exceedance of the 15A NCAC 02L Standard, Appendix 2, April 1, 2013 Spec Cond = Specific Conductance Deg C = Degrees Celsius DUP = Duplicate umhos/cm = Micro mhos per centimeter S.U. = Standard Unit ft = Feet mg/L = Milligram per liter my = Millivolts NA = Not analyzed ug/L = Microgram per liter mg - N/L = Milligram nitrogen per liter NO = Not detected < = 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. NTU = Nephelometric turbidity unit NE = Not established DIS = Dissolved Temp = Temperature TOT= Total DO = Dissolved oxygen ORP = Oxidation -Reduction Potential Eh = Redox Potential NM = Not measured pCi/1 = picocuries per liter b = Target analyte detected in method blank at or above the reporting limit. C = Associated midday/end of day field parameter calibration not within range. CL = The continuing calibration for this compound is outside of Pace Analytical acceptance limits. CR = The dissolved metal result was greater than the total metal result for this element. Results were confirmed by reanalysis. 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. Ml = Matrix spike recovery was high: the associated Laboratory Control Spike (LCS) was acceptable. Nl = This sample was inadvertently collected with sample running through the flow cell and should be considered invalid based on possible contamination from the flow cell. RI = RPD value was outside control limits. Data not used in provisional background concentration determinations. P:\Duke Energy Progress. 1026\104. Lee Ash Basin GW Assessment\19.EG_CSASUP\tables\Table 1-8 Background Analytical Results.xlsx Page 6 of 8 TABLE 1-8 BACKGROUND ANALYTICAL RESULTS H. F. LEE ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, GOLDSBORO, NC Analytical Parameter Mercury Mercury Mercury Methane Molybdenum Molybdenum Molybdenum Nickel Nickel Nickel Nitrate (as N) Potassium Selenium Selenium Selenium Sodium Strontium Strontium Strontium Sulfate Sulfide Thallium Thallium Thallium DIS DIS (0.1u) TOT DIS DIS (0.1u) TOT DIS DIS (0.1u) TOT TOT DIS DIS (0.1u) TOT TOT DIS DIS (0.1u) TOT DIS DIS (0.1u) TOT Reporting Units ug/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 ug/L mg/L ug/L ug/L ug/L mg/L mg/L ug/L ug/L ug/L 15A NCAC 02L Standard NE NE 1 NE NE NE NE NE NE 100 10 NE NE NE 20 NE NE NE NE 250 NE NE NE 0.2 Sample ID Sample Collection Date Analytical Results IMW-01S 12/06/2015 <0.2 NA <0.2 14.7 <0.5 NA <0.5 3.2 NA 2.9 3.2 <5 0.77 NA 0.75 7.61 110 NA 110 20 <0.1 <0.1 NA <0.1 b IMW-01S 03/O1/2016 <0.05 NA <0.05 18.6 <1 NA <1 7.93 NA 3.23 3.6 N1 1.57 <1 NA <1 7.97 118 NA 109 22 <0.1 <0.2 NA <0.2 IMW-03S 05/28/2015 <0.05 NA <0.05 <10 <1 NA <1 6.28 NA 7.17 <0.01 1.17 <1 NA <1 6.94 64 NA 61 1.5 <0.1 <0.2 NA <0.2 IMW-03S 06/16/2015 <0.05 NA <0.05 <10 <1 NA <1 5.32 NA 6.22 <0.01 1.5 <1 NA <1 8.05 70 NA 67 1.4 <0.1 <0.2 NA <0.2 IMW-03S 12/06/2015 <0.2 NA <0.2 <10 <0.5 NA <0.5 4.7 NA 4.5 <0.02 <5 <0.5 NA <0.5 6.85 100 NA 100 <1 <0.1 <0.1 NA <0.1 IMW-03S 0111312016 <0.05 NA <0.05 7760 <1 NA <1 16.6 NA 7.96 0.039 1.51 <1 NA <1 7.14 106 NA 107 <0.1 <0.1 <0.2 NA <0.2 IMW-03S 03/02/2016 <0.05 NA <0.05 5680 <1 NA <1 5.84 NA 5.63 <0.01 r 1.41 <1 NA <1 7.06 85 NA 80 0.34 <0.1 <0.2 NA <0.2 Cape Fear IMW-01BC 05/27/2015 <0.05 NA <0.05 <10 4 NA 4.78 2.05 NA 2.68 0.014 2.22 <1 NA <1 59.2 101 NA 105 20 <0.1 <0.2 NA <0.2 IMW-01BC 06/12/2015 <0.05 NA <0.05 <10 3.71 NA 3.74 2.62 NA 2.25 0.064 2.44 <1 NA <1 62.5 110 NA 113 20 <0.1 <0.2 NA <0.2 IMW-01BC 09/24/2015 <0.05 <0.05 <0.05 NA 2.24 2.6 2.64 1.4 1.69 1.57 NA 2.57 <1 <1 <1 62.9 119 117 120 NA NA <0.2 <0.2 <0.2 IMW-01BC 12/06/2015 <0.2 NA <0.2 17.9 2.2 NA 1.9 1.2 NA 0.9 <0.02 <5 <0.5 NA <0.5 61 110 NA 110 15.8 <0.1 <0.1 NA <0.1 IMW-01BC O1/12/2016 <0.05 NA <0.05 18.3 1.95 NA 1.97 1.52 NA 1.39 0.026 2.4 <1 NA <1 63 107 NA 114 18 <0.1 <0.2 NA <0.2 IMW-01BC 03/04/2016 <0.05 NA <0.05 21.1 3.99 NA 4.25 1.99 NA 2.17 0.044 2.15 <1 NA <1 72.1 100 NA 97 23 <0.1 <0.2 NA <0.2 IMW-02BC 05/26/2015 <0.05 NA <0.05 <10 10.2 NA 9.96 <1 NA <1 <0.01 3.95 <1 NA <1 81.4 138 NA 143 17 <0.2 <0.2 NA <0.2 IMW-02BC 0611212015 <0.05 NA <0.05 <10 29.3 NA 30.3 <1 NA <1 0.023 3.85 <1 NA <1 101 126 NA 129 8.6 1.47 <0.2 NA <0.2 IMW-02BC 12/06/2015 <0.2 NA <0.2 84.2 11.9 NA 12.7 <0.5 NA <0.5 <0.02 7.09 <0.5 NA <0.5 92.7 150 NA 150 <1 0.44 <0.1 NA <0.1 IMW-02BC O1/13/2016 <0.05 NA <0.05 46.7 13.6 NA 19.1 1.34 NA 1.46 <0.01 4.36 <1 NA <1 119 138 NA 133 5.1 0.1 <0.2 NA <0.2 IMW-02BC 03/03/2016 <0.05 NA <0.05 33.6 23.2 NA 23.4 <1 NA <1 <0.01 3.34 <1 NA <1 128 105 NA 98 12 <0.1 <0.2 NA <0.2 IMW-03BC O5/27/2015 <0.05 NA <0.05 <10 2.11 NA 2.1 2.4 NA 2.28 <0.01 1.08 <1 NA <1 7.39 86 NA 83 5 <0.1 <0.2 NA <0.2 IMW-03BC 06/16/2015 <0.05 NA <0.05 <10 1.11 NA 1.21 2.52 NA 2.25 <0.01 1.13 <1 NA <1 7.46 82 NA 76 4.6 <0.1 <0.2 NA <0.2 IMW-03BC 12/06/2015 <0.2 NA <0.2 35.1 0.66 NA 0.65 2.4 NA 2.2 <0.02 <5 <0.5 NA <0.5 <5 78 NA 81 2.7 <0.1 <0.1 NA <0.1 IMW-03BC O1/13/2016 <0.05 NA <0.05 <10 <1 NA <1 1.68 NA 1.45 0.076 5.37 <1 NA <1 6.54 86 NA 85 3.4 <0.1 <0.2 NA <0.2 IMW-03BC 0310412016 <0.05 NA <0.05 1110 <1 NA <1 1.98 NA 1.75 0.016 1.25 <1 NA <1 15.L_L 90 NA 86 4.2 <0.1 <0.2 NA <0.2 Notes: = - Bold highlighted concentration indicates exceedance of the 15A NCAC 02L Standard, Appendix 2, April 1, 2013. Spec Cond = Specific Conductance Deg C = Degrees Celsius CUP = Duplicate umhos/cm = Micro mhos per centimeter S.U. = Standard Unit ft = Feet mg/L = Milligram per liter my = Millivolts NA = Not analyzed ug/L = Microgram per liter mg - N/L = Milligram nitrogen per liter NO = Not detected < = 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. NTU = Nephelometric turbidity unit NE = Not established DIS = Dissolved Temp = Temperature TOT= Total b = Target analyte detected in method blank at or above the reporting limit. C = Associated midday/end of day field parameter calibration not within range. CL = The continuing calibration for this compound is outside of Pace Analytical acceptance limits. CR = The dissolved metal result was greater than the total metal result for this element. Results were confirmed by reanalysis. 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. Ml = Matrix spike recovery was high: the associated Laboratory Control Spike (LCS) was acceptable. Nl = This sample was inadvertently collected with sample running through the flow cell and should be considered invalid based on possible contamination from the flow cell. RI = RPD value was outside control limits. Data not used in provisional background concentration determinations. DO = Dissolved oxygen ORP = Oxidation -Reduction Potential Eh = Redox Potential NM = Not measured pCi/1 = picocuries per liter P:\Duke Energy Progress. 1026\104. Lee Ash Basin GW Assessment\19.EG_CSASUP\tables\Table 1-8 Background Analytical Results.xlsx Page 7 of 8 TABLE 1-8 BACKGROUND ANALYTICAL RESULTS H. F. LEE ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, GOLDSBORO, NC Analytical Parameter Total Dissolved Solids Total Organic Carbon Total Suspended Solids Vanadium Vanadium Vanadium Zinc Zinc Zinc Radium-226 Radium-228 Uranium-233 Uranium-234 Uranium-236 Uranium-238 As(III) As(V) MMAs DMAs Fe(II) Fe(III) Mn(II) Mn(IV) DIS DIS (0.1u) TOT DIS DIS (0.1u) TOT Reporting Units mg/L mg/L mg/L ug/L ug/L ug/L ug/L ug/L ug/L pCi/I pCi/I ug/mL ug/mL ug/mL ug/mL ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L 15A NCAC 02L Standard 500 NE NE NE NE 0.3 * NE NE 1000 NE NE NE NE NE NE NE NE NE NE NE NE NE NE Sample ID Sample Collection Date Analytical Results IMW-01S 12/06/2015 81 1.1 4 <1 NA <1 12 NA <10 NA NA NA NA NA NA NA NA NA NA NA NA NA NA IMW-01S 03/01/2016 88 0.506 <5 <0.3 NA 0.313 17 NA 14 0.842 <3 <0.00005 <0.00005 <0.00005 <0.0002 NA NA NA NA NA NA NA NA IMW-03S 05/28/2015 85 0.984 <5 <0.3 NA <0.3 13 NA 8 NA NA NA NA NA NA NA NA NA NA NA NA NA NA IMW-03S 06/16/2015 94 1.5 <5 <0.3 NA <0.3 48 NA 16 NA NA NA NA NA NA NA NA NA NA NA NA NA NA IMW-03S 12/06/2015 132 3.8 17.4 <1 NA <1 <10 NA <10 NA NA NA NA NA NA NA NA NA NA NA NA NA NA IMW-03S 0111312016 110 1.6 46 <0.3 NA <0.3 <5 NA <5 NA NA NA NA NA NA NA NA NA NA NA NA NA NA IMW-03S 03/02/2016 120 1.1 10 <0.3 NA <0.3 <5 NA <5 <1 <3 <0.00005 <0.00005 <0.00005 <0.0002 NA NA NA NA NA NA NA NA Cape Fear IMW-01BC 05/27/2015 220 0.398 5 <0.3 NA <0.3 <5 NA <5 NA NA NA NA NA NA NA NA NA NA NA NA NA NA IMW-01BC 06/12/2015 230 0.508 <5 <0.3 NA <0.3 21 NA 7 NA NA NA NA NA NA NA NA NA NA NA NA NA NA IMW-01BC 09/24/2015 NA NA NA <0.3 <0.3 <0.3 <5 <5 <5 NA NA NA NA NA NA NA NA NA NA NA NA NA NA IMW-01BC 12/06/2015 223 <1 8.2 <1 NA <1 <10 NA <10 NA NA NA NA NA NA NA NA NA NA NA NA NA NA IMW-01BC 01/12/2016 240 0.533 9 <0.3 NA <0.3 <5 NA <5 NA NA NA NA NA NA NA NA NA NA NA NA NA NA IMW-01BC 03/04/2016 260 0.57 <5 <0.3 NA <0.3 <5 NA <5 <1 2.5 <0.00005 <0.00005 <0.00005 0.000566 NA NA NA NA NA NA NA NA IMW-02BC 05/26/2015 280 0.796 9 <0.3 NA 0.429 <5 NA <5 NA NA NA NA NA NA NA NA NA NA NA NA NA NA IMW-02BC 0611212015 350 3.1 11 <0.3 NA 0.629 <5 NA <5 NA NA NA NA NA NA NA NA NA NA NA NA NA NA IMW-02BC 12/06/2015 267 1.9 5.1 <1 NA <1 <10 NA <10 NA NA NA NA NA NA NA NA NA NA NA NA NA NA IMW-02BC 01/13/2016 340 0.146 7 <0.3 NA 0.438 <5 NA <5 NA NA NA NA NA NA NA NA NA NA NA NA NA NA IMW-02BC 03/03/2016 370 1.2 <5 <0.3 NA 0.637 <5 NA <5 0.743 3.27 <0.00005 <0.00005 <0.00005 0.000395 NA NA NA NA NA NA NA NA IMW-03BC 05/27/2015 110 0.541 7 <0.3 NA <0.3 8 NA 6 NA NA NA NA NA NA NA NA NA NA NA NA NA NA IMW-03BC 06/16/2015 150 0.675 <5 <0.3 NA <0.3 8 NA 7 NA NA NA NA NA NA NA NA NA NA NA NA NA NA IMW-03BC 12/06/2015 118 D6 <1 M1,R1 9 <1 NA <1 <10 NA <10 NA NA NA NA NA NA NA NA NA NA NA NA NA NA IMW-03BC 01/13/2016 110 0.523 6 <0.3 NA <0.3 5 NA 7 NA NA NA NA NA NA NA NA NA NA NA NA NA NA IMW-03BC 0310412016 130 0.697 20 <0.3 NA <0.3 19 NA 9 1.43 <3 <0.00005 <0.00005 <0.00005 <0.0002 NA NA NA NA NA NA NA NA Notes: 7-1 - Bold highlighted concentration indicates exceedance of the 15A NCAC 02L Standard, Appendix 2, April 1, 2013. Spec Cond = Specific Conductance Deg C = Degrees Celsius DUP = Duplicate umhos/cm = Micro mhos per centimeter S.U. = Standard Unit ft = Feet mg/L = Milligram per liter my = Millivolts NA = Not analyzed ug/L = Microgram per liter mg - N/L = Milligram nitrogen per liter NO = Not detected < = 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. NTU = Nephelometric turbidity unit NE = Not established DIS = Dissolved Temp = Temperature TOT= Total b = Target analyte detected in method blank at or above the reporting limit. C = Associated midday/end of day field parameter calibration not within range. CL = The continuing calibration for this compound is outside of Pace Analytical acceptance limits. CR = The dissolved metal result was greater than the total metal result for this element. Results were confirmed by reanalysis. 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. M1 = Matrix spike recovery was high: the associated Laboratory Control Spike (LCS) was acceptable. N1 = This sample was inadvertently collected with sample running through the flow cell and should be considered invalid based on possible contamination from the flow cell. RI = RPD value was outside control limits. Data not used in provisional background concentration determinations. DO = Dissolved oxygen ORP = Oxidation -Reduction Potential Eh = Redox Potential NM = Not measured pCi/I = picocuries per liter Prepared by: BER Checked by: MCD P:\Duke Energy Progress. 1026\104. Lee Ash Basin GW Assessment\19.EG_CSASUP\tables\Table 1-8 Background Analytical Results.xlsx Page 8 of 8 TABLE 1-9 2016 CAMA MONITORING WELL SAMPLE LOCATIONS H.F. LEE ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC., GOLDSBORO, NC Monitoring Hydrogeologic Well Location Rationale Well ID Zone Monitored Inactive Ash Basins IMW-01S Surficial West of inactive ash basin 1, Monitor background groundwater quality within surficial hydrogeologic unit. hydraulically upgradient IMW-01BC Cape Fear West of inactive ash basin 1, Monitor background groundwater quality within Cape Fear hydrogeologic unit. hydraulically upgradient IMW-02BC Cape Fear West of inactive ash basin 1, Monitor background groundwater quality within Cape Fear hydrogeologic unit. hydraulically upgradient IMW-03S Surficial North of Inactive Ash Basins, Monitor background groundwater quality within surficial deposits. hydraulically upgradient IMW-03BC Cape Fear North of Inactive Ash Basins, Monitor background groundwater quality within Cape Fear hydrogeologic unit. hydraulically upgradient IMW-04S Surficial Southwest of Inactive Ash Basin 3 Monitor groundwater within surficial hydrogeologic unit southwest of inactive ash basin 3. IMW-04BC Cape Fear Southwest of Inactive Ash Basin 3 Monitor groundwater within Cape Fear hydrogeologic unit southwest of the inactive ash basin 3. IMW-05S Surficial Southeast of Inactive Ash Basin 3 Monitor groundwater within surficial hydrogeologic unit southeast of inactive ash basin 3. IMW-OSBC Cape Fear Southeast of Inactive Ash Basin 3 Monitor groundwater within Cape Fear hydrogeologic unit southeast of the inactive ash basin 3. Active Ash Basin Northeast of Inactive Basins and West AMW-11S Surficial of Active Ash Basin, hydraulically Monitor background groundwater quality within surficial hydrogeologic unit. upgradient Northeast of the inactive basins and AMW-11BC Cape Fear west of the active basin, hydraulically Monitor background groundwater quality within Cape Fear hydrogeologic unit. upgradient AMW-12S Surficial West of the active ash basin, Monitor background groundwater quality within surficial hydrogeologic unit. hydraullically upgradient AMW-12BC Cape Fear West of Active Ash Basin, hydraullically Monitor background groundwater quality within Cape Fear hydrogeologic unit. upgradient AMW-13S Surficial West of active ash basin, hydraullically Monitor background groundwater quality within surficial hydrogeologic unit. upgradient AMW-13BC Cape Fear West of active ash basin, hydraullically Monitor background groundwater quality within Cape Fear hydrogeologic unit. upgradient MW-1 Surficial Northwest of the active ash basin, Monitor constituent concentrations northwest of the active ash basin. across perimeter ditch CCR-100S Surficial Northwest of active ash basin, Replacement for BGMW-9 and BGMW-10 to monitoring background groundwater quality hydraulically upgradient within surficial hydrogeologic unit AMW-16BC Cape Fear Northwest of Active Ash Basin, Monitor groundwater within Cape Fear hydrogeologic unit north of active ash basin. hydraulically upgradient AMW-17S Surficial North of Active Ash Basin, hydraulically Monitor background groundwater quality within surficial hydrogeologic unit. upgradient AMW-17BC Black Creek North of Active Ash Basin, hydraulically Monitor background groundwater quality within Black Creek hydrogeologic unit. upgradient AMW-18S Surficial East of Active Ash Basin, hydraulically Monitor groundwater quality within surficial hydrogeologic unit southeast of the active upgradient basin at the property boundary. AMW-18BC Black Creek East of Active Ash Basin, hydraulically Monitor groundwater quality within Black Creek hydrogeologic unit southeast of the active upgradient basin at the property boundary. Prepared by: TCP Checked by: JHG File: P:\Duke Energy Progress.1026\104. Lee Ash Basin GW Assessment\19.EG_CSASUP\tables\Table 1-9 - 2016 CAMA Monitoring Well Locations.xlsx Page 1 of 1 TABLE 1-10 GROUNDWATER MONITORING PLAN (2016) H.F. LEE ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, GOLDSBORO, NC PARAMETER I RL JUNITS IMETHOD FIELD PARAMETERS pH NA SU Field Water Quality Meter Specific Conductance NA [IS/CM Field Water Quality Meter Temperature NA 0C Field Water Quality Meter Dissolved Oxygen NA mg/L Field Water Quality Meter Oxidation Reduction Potential NA mV Field Water Quality Meter Eh INA 1MV I Field Water Quality Meter Turbidity NA INTU I Field Water Quality Meter INORGANICS Aluminum 0.005 m L EPA 200.7 or 6010C Antimony 0.001 mg/L EPA 200.8 or 6020A Arsenic 0.001 m L EPA 200.8 or 6020A Barium 0.005 mg/L EPA 200.7 or 6010C Beryllium 0.001 m L EPA 200.8 or 6020A Boron 0.05 mg/L EPA 200.7 or 6010C Cadmium 0.001 m L EPA 200.8 or 6020A Chromium 0.001 mg/L EPA 200.7 or 6010C Cobalt 0.001 m L EPA 200.8 or 6020A Copper 0.001 mg/L EPA 200.8 or 6020A Hexavalent Chromium 0.00003 m L EPA 218.7 Iron 0.01 mg/L EPA 200.7 or 6010C Lead 0.001 m L EPA 200.8 or 6020A Manganese 0.005 mg/L EPA 200.7 or 6010C Mercury 0.00005 m L EPA 245.1 Molybdenum 0.001 mg/L EPA 200.8 or 6020A Nickel 0.001 m L EPA 200.8 or 6020A Selenium 0.001 mg/L EPA 200.8 or 6020A Strontium 0.005 m L EPA 200.7 or 6010C Thallium (low level) 0.0002 mg/L EPA 200.8 or 6020A Vanadium low level 0.0003 m L IEPA 200.8 or 6020A Zinc 10.005 1 m L I EPA 200.7 or 6010C RADIONUCLIDES Radium 226 1 pCi/L EPA 903.1 Modified Radium 228 3 Ci/L EPA 904.0/SW846 9320 Modified Uranium 233 234 236 238 Varies by isotope µ /mL ISW846 3010A/6020A ANIONS/CATIONS/OTHER Alkalinity as CaCO3 20 m L SM 2320E Bicarbonate 20 mg/L SM 2320 Calcium 0.01 m L EPA 200.7 Carbonate 20 mg/L SM 2320 Chloride 0.1 m L EPA 300.0 or 9056A Hardness NA mg/L as CaCO3 EPA 130.1 Magnesium 0.005 mg/L EPA 200.7 or 6010C Nitrate + Nitrite 0.023 m -N L EPA 353.2 Potassium 0.1 mg/L EPA 200.7 Methane 0.01 m L RSK - 175 Sodium 0.05 mg/L EPA 200.7 Sulfate 0.1 mg/L EPA 300.0 or 9056A Sulfide 0.1 mg/L SM 4500 S2 D Total Dissolved Solids 25 m L SM 2540C Total Organic Carbon 0.1 mg/L SM531OC/EPA9060A Total Suspended Solids 2 m L ISM 2450D Prepared by: JAW Checked by: BER Notes: 1. Inorganics analyzed for total and dissolved (0.45 micrometer) concentrations. NA indicates not applicable. P:\Duke Energy Progress.1026\104. Lee Ash Basin GW Assessment\19.EG_CSASUP\tables\Table 1-10 - 2016 Groundwater Monitoring Parameters.xlsx Page 1 of 1 TABLE 2-1 DEQ GLOBAL CSA COMMENTS FOR DEP SITES H.F. LEE ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC., GOLDSBORO, NC Number General Comment General Response to Comment 1 DEQ requests determination of 'provisional' background Provisional background groundwater concentrations were provided concentrations (for groundwater in particular). It is understood in the CAP Part 1 reports. Updated provisional background that until a sufficient background data set becomes available to do groundwater concentrations are included in this CSA Supplement 1 statistical analysis the term 'provisional background report. concentrations' will be used. Duke is to propose 'provisional background concentrations' and DEQ will determine background concentrations. 2 Provisional background concentrations should be determined for Provisional background concentrations were provided in the CAP each flow zone (hydrostratigraphic unit) at each facility while Part 1 reports and presented for each media type (soil, sediment, considering similar subsurface geochemical conditions and site- surface water) and hydrogeologic flow zone. Updated provisional specific conditions (e.g. , oxic versus anoxic conditions). background groundwater concentrations are included in this CSA Supplement 1. 3 Geochemical controls (e.g. , pH, DO, and Eh-redox) associated Geochemical controls were discussed in the CAP Part 1 and CAP with contaminant migration should be considered in Site Part 2 documents. PHREEQC geochemical modeling and pH/Eh Conceptual Model. Eh maps similar to pH maps would be useful for maps were included in the discussion. this purpose. 4 Some soil sample analytical detection limits were greater than the Models and risk assessment evaluations used the method NC Soil Protection of Groundwater goals. Soil analysis method detection limit as a conservative approach when detection limits detection limits should be as close as possible to these values. were greater than groundwater protection goals. The lab is aware of the need to use the lowest detection limit possible for soil samples. Soil matrix interference and other factors limit the technical practicality of achieving detection limits at or below the screening level values. 5 Source characterization evaluations should include primary and Geochemical and fate and transport model evaluations provided in secondary soil source contributions (i.e., leaching of ash the CAP considered these mechanisms. constituents onto soil, leaching of naturally occurring constituents from native soils, leaching due to changing geochemical conditions). P:\Duke Energy Progress.1026\104. Lee Ash Basin GW Assessment\19.EG_CSASUP\tab1es\ Table 2-1 DEQ Global Comments.xlsx Page 1 of 4 TABLE 2-1 DEQ GLOBAL CSA COMMENTS FOR DEP SITES H.F. LEE ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC., GOLDSBORO, NC Number General Comment General Response to Comment 6 COIs should be developed based upon results from pore water, Constituents exceeding the 2L standard have been included in the groundwater and other media. Include hexavalent chromium as CAP. The risk assessment screening process is consistent with COI due to interest in water supply well results. EPA's approach for determining the constituents that need to be evaluated ("Human and Ecological Risk Assessment of Coal Combustion Wastes," USEPA, April 2010, RIN 2050-AE81). Provisional background concentrations for hexavalent chromium in groundwater are being developed. 7 Groundwater results should be mapped and presented in cross- The CSA Supplement 1 graphics address this comment. sectional view to the detection limit rather than just to 2L. Cross - sections should include geologic features and chemical contours. Discuss in text where difficult to contour due to background or other site conditions. 8 Well construction and integrity should be considered when In post-CSA activities, wells have been redeveloped or replaced as analyzing the groundwater data. Monitoring wells that exhibit high necessary. Turbid sample data (samples with turbidity >10 NTUs) pH or turbidity should be redeveloped or replaced. Data from have been screened from use in statistical analysis using samples with >10NTUs should be screened prior to use in professional judgement where samples may have been visually statistical analysis. clear or the turbidity was close to 10 NTUs. 9 Address influence of ash impoundments on subsurface Geochemical controls and PHREEQC geochemical modeling were geochemistry and how that may influence contaminant distribution discussed in the CAP Part 1 and CAP Part 2 documents. related to CCRs or cause metals to leach from native soils. 10 Provide vertical gradient maps/figures illustrating flow paths, areas Vertical gradient maps were included in the CAP Part 1 reports. of recharge and discharge. Provide plan view map. 11 Show surface water features on base maps and cross -sections. Maps and cross -sections include surface water features where applicable. 12 Tabulate analytical results for water supply wells, including A map of the water supply wells sampled by DEQ and a tabulation strontium, and provide information on maps. of the most recent data is provided in this CSA Supplement 1 report. Maps and cross -sections showing the distribution of strontium are also provided within this supplemental report. P:\Duke Energy Progress.1026\104. Lee Ash Basin GW Assessment\19.EG_CSASUP\tab1es\ Table 2-1 DEQ Global Comments.xlsx Page 2 of 4 TABLE 2-1 DEQ GLOBAL CSA COMMENTS FOR DEP SITES H.F. LEE ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC., GOLDSBORO, NC Number General Comment General Response to Comment 13 Include analysis for total uranium, radium-226, and radium-228 in Key wells located in background, below ash basin, and background, below ash basin, immediate downgradient, and other downgradient of the ash basin have been sampled for total downgradient locations. Use Federal MCL for standard for Ra 226, uranium, Ra 226, and Ra 228. These parameters are also included Ra 228, and U. in the 2016 monitoring plan. 14 COPCs (or COI's) should be modeled using site specific Kd values Agreed, it is anticipated that the various models (i.e., or a technical basis provided as to why the modeling or site geochemical, flow and transport) will be updated as additional specific Kd for a parameter could not be conducted. The models data relevant to the models becomes available. should be "living entities" and updated as more information becomes available that could change or confirm the outcome of the models. 15 Appropriate PSRG for chromium is hexavalent chromium due to its The PSRC for hexavalent chromium is being used in post -CSA toxicity drives the risk for the constituent. reports for data comparison purposes. 16 Potential receptors identified as part of the risk assessment should Recreational users of surface water were identified as potential include non -trespassing recreational users of surface water bodies receptors and evaluated as part of the Risk Assessment provided such as boaters and water supply wells. in the CAP 2 reports. At most locations, water supply wells are not located downgradient of the facility and therefore the risk assessment considered the pathway incomplete. Where downgradient water supply wells were identified, the data was evaluated by Haley and Aldrich, Inc. in various reports (2015 and 2016). 17 For isoconcentration contour maps, provide contours for Revised isoconcentration maps with contour lines indicating concentrations above the reporting limit/PQL. Use inferred concentrations above the reporting limit are included in this (dashes) lines where appropriate. document. Where appropriate, inferred lines are used. 18 Data collected to support CSAs should be incorporated into maps, The requested information has been included in various reports narratives and provided in CAPs (water supply, seep, SW, including the CSA report, CAP Part 1, CAP Part 2, and this CSA sediment, background). Data collected prior to CAMA activities Supplement 1 report. should also be included. P:\Duke Energy Progress.1026\104. Lee Ash Basin GW Assessment\19.EG_CSASUP\tab1es\ Table 2-1 DEQ Global Comments.xlsx Page 3 of 4 TABLE 2-1 DEQ GLOBAL CSA COMMENTS FOR DEP SITES H.F. LEE ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC., GOLDSBORO, NC Number General Comment General Response to Comment 19 2L exceedances related to naturally occurring conditions cannot be Noted. Initial provisional background concentrations were confirmed until, at a minimum, provisional background presented in the CAP Part 1 report based upon the data available concentrations are determined. Dynamic redox and geochemical at the time. Updated provisional background concentrations are conditions can liberate naturally occurring metals (e.g. , As, Fe, presented in this CSA Supplement 1 report using 5 or 6 data sets Mn) from soil and aquifer media. as available. Duke anticipates at least 8 rounds of data from the new background wells will be used to statistically develop background concentrations. Geochemical modeling has been conducted to assess dynamic redox and geochemical conditions. 20 Surface water hydrology (e.g. , wetlands, tributaries, etc.) as it A discussion of groundwater and surface water interaction was relates to groundwater modeling or risk assessment considerations provided in the CAP Part 1 and site data was incorporated into the should be included in the CAP. groundwater models. Stream information was incorporated in the modeling and risk assessments. Prepared by: JAW Checked by: KWW P:\Duke Energy Progress.1026\104. Lee Ash Basin GW Assessment\19.EG_CSASUP\tab1es\ Table 2-1 DEQ Global Comments.xlsx Page 4 of 4 TABLE 2-2 RADIOLOGICAL ANALYTICAL RESULTS H.F. LEE ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, GOLDSBORO, NC Analytical Parameter Radium-226 Radium-228 Total Radium Uranium-233 Uranium-234 Uranium-236 Uranium-238 Total Uranium Reporting Units pCi/L pCi/L pCi/L ug/mL ug/mL ug/mL ug/mL ug/mL Federal MCL --- --- 5 --- --- --- --- 0.03 Sample ID Sample Collection Date Analytical Results Background AMW-11BC 03/01/2016 0.469 <3 0.469 <0.00005 <0.00005 <0.00005 <0.0002 <RL AMW-11BC 06/08/2016 1 <1 1 <0.00005 <0.00005 <0.00005 <0.0002 <RL AMW-11S 03/01/2016 <1 <3 <RL <0.00005 <0.00005 <0.00005 <0.0002 <RL AMW-11S 06/07/2016 0.824 0.87 1.694 <0.00005 <0.00005 <0.00005 0.00202 0.00202 AMW-12BC 06/10/2015 <1 <3 <RL <0.00005 <0.00005 <0.00005 <0.0002 <RL AMW-12BC 03/01/2016 0.691 <3 0.691 <0.00005 <0.00005 <0.00005 <0.0002 <RL AMW-12BC 06/08/2016 0.306 <1 0.306 <0.00005 <0.00005 <0.00005 0.00021 0.00021 AMW-12BC 08/04/2016 0.685 <1 0.685 <0.00005 <0.00005 <0.00005 <0.0002 <RL AMW-12S 06/10/2015 12 11.4 23.4 <0.00005 <0.00005 <0.00005 0.00224 0.00224 AMW-12S 03/01/2016 5.05 12.7 17.75 <0.00005 <0.00005 <0.00005 0.002 0.002 AMW-12S 06/08/2016 11.2 10.7 21.9 <0.00005 <0.00005 <0.00005 <0.0002 <RL AMW-12S 08/04/2016 13.3 8.96 22.26 <0.00005 <0.00005 <0.00005 0.00197 0.00197 AMW-13BC 03/01/2016 0.959 <3 0.959 <0.00005 <0.00005 <0.00005 <0.0002 <RL AMW-13BC 06/08/2016 3.44 <1 3.44 <0.00005 <0.00005 <0.00005 0.000281 0.000281 AMW-13S 03/01/2016 0.672 <3 0.672 <0.00005 <0.00005 <0.00005 <0.0002 <RL AMW-13S 06/08/2016 1.17 <1 1.17 <0.00005 <0.00005 <0.00005 0.000149 j 0.000149 j AMW-16BC 07/20/2016 3.1 <1 3.1 <0.00005 <0.00005 <0.00005 <0.0002 <RL AMW-17S 07/28/2016 0.765 0.996 1.761 <0.00005 <0.00005 <0.00005 <0.0002 <RL CCR-100S 07/20/2016 1.55 2.29 3.84 <0.00005 <0.00005 <0.00005 0.000119j 0.000119j IMW-01BC 03/04/2016 <1 2.5 2.5 <0.00005 <0.00005 <0.00005 0.000566 0.000566 IMW-01BC 06/07/2016 0.784 <1 0.784 <0.00005 <0.00005 <0.00005 <0.0002 <RL IMW-01S 03/01/2016 0.842 <3 0.842 <0.00005 <0.00005 <0.00005 <0.0002 <RL IMW-01S 06/07/2016 0.595 0.951 1.546 <0.00005 <0.00005 <0.00005 <0.0002 <RL IMW-01S DUP 06/07/2016 1.74 0.791 2.531 <0.00005 <0.00005 <0.00005 <0.0002 <RL IMW-02BC 03/03/2016 0.743 3.27 4.013 <0.00005 <0.00005 <0.00005 0.000395 0.000395 IMW-02BC 06/07/2016 0.337 <1 0.337 <0.00005 <0.00005 <0.00005 <0.0002 <RL IMW-03BC 03/04/2016 1.43 <3 1.43 <0.00005 <0.00005 <0.00005 <0.0002 <RL IMW-03BC 06/08/2016 <1 0.593 0.593 <0.00005 <0.00005 <0.00005 <0.0002 <RL IMW-03S 03/02/2016 <1 <3 <RL <0.00005 <0.00005 <0.00005 <0.0002 <RL IMW-03S 06/08/2016 0.519 0.855 1.374 <0.00005 <0.00005 <0.00005 0.000294 0.000294 P:\Duke Energy Progress.1026\104. Lee Ash Basin GW Assessment\19.EG_CSASUP\tables\Table 2-2 Radiological Analytical Results.xlsx Page 1 of 2 TABLE 2-2 RADIOLOGICAL ANALYTICAL RESULTS H.F. LEE ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, GOLDSBORO, NC Analytical Parameter Radium-226 Radium-228 Total Radium Uranium-233 Uranium-234 Uranium-236 Uranium-238 Total Uranium Reporting Units pCi/L pCi/L pCi/L ug/mL ug/mL ug/mL ug/mL ug/mL Federal MCL --- --- 5 --- --- --- --- 0.03 Active Ash Basin Ash Pore Water ABMW-01 1 06/11/2015 0.812 <3 0.812 <0.00005 <0.00005 <0.00005 0.00187 0.00187 Surficial ABMW-01S 06/11/2015 <1 1.7 1.7 <0.00005 <0.00005 <0.00005 0.00172 0.00172 AMW-18S 07/28/2016 <1 0.708 0.708 <0.00005 <0.00005 <0.00005 0.0000787 j 0.0000787 j LLMW-01S 06/15/2015 <1 <3 <RL <0.00005 <0.00005 <0.00005 <0.0002 <RL MW-1 03/02/2016 1.13 <3 1.13 <0.00005 <0.00005 <0.00005 <0.0002 <RL MW-1 06/07/2016 0.457 0.546 1.003 <0.00005 <0.00005 <0.00005 <0.0002 <RL MW-1 08/04/2016 1.09 0.756 1.846 <0.00005 <0.00005 <0.00005 0.00019j 0.00019j SMW-2 06/07/2016 0.843 <1 0.843 <0.00005 <0.00005 <0.00005 <0.0002 <RL Active Ash Basin Ash Pore Water IABMW-01 06/10/2015 1.12 <3 1.12 <0.00005 <0.00005 <0.00005 0.0135 0.0135 Surficial IABMW-01S 06/10/2015 0.979 <3 0.979 <0.00005 <0.00005 <0.00005 0.000465 0.000465 IMW-04S 07/28/2016 0.603 0.694 1.297 <0.00005 <0.00005 <0.00005 0.0000693 j 0.0000693 j IMW-05S 07/29/2016 0.684 <1 0.684 <0.00005 <0.00005 <0.00005 <0.0002 <RL Prepared by: BER Checked by: JDM Notes: = - Concentration greater than the Federal MCL (https://www.epa.gov/sites/production/files/2016-06/documents/npwdr_complete_table.pdf) < = concentration not detected at or above reporting limit j = indicates concentration reported below Practical Quantitation Limit (PQL), but above Method Detection Limit (MDL) and therefore concentration is estimated. RL = reporting limit pCi/L = picocuries per liter ug/ml- = micrograms per milliliter P:\Duke Energy Progress.1026\104. Lee Ash Basin GW Assessment\19.EG_CSASUP\tables\Table 2-2 Radiological Analytical Results.xlsx Page 2 of 2 TABLE 2-3 IN -SITU HYDRAULIC CONDUCTIVITY TEST RESULTS H.F. LEE ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, GOLDSBORO, NC Ash Basin Well ID Slug Test Slug Test Number Hydraulic Conductivity (cm/sec) Hydraulic Conductivity (ft/day) Measured Geometric Mean Measured Ge eric Mean Active Ash Basin ABMW-01* Slug Out Test 1 4.70E-03 4.76E-03 1.33E+01 1.35E+01 Test 2 4.58E-03 1.30E+01 Test 4 5.51E-03 1.56E+01 Test 5 4.71E-03 1.34E+01 Test 6 4.38E-03 1.24E+01 Inactive Ash Basin IABMW-01 Slug Out Test 1 4.17E-03 4.17E-03 1.18E+01 1.18E+01 IABMW-02 DRY IABMW-03 DRY LLM W-01 DRY LLMW-02 DRY GEOMETRIC MEAN 4.66E-03 1.32E+01 HIGHEST CONDUCTIVITY 5.51E-03 1.56E+01 LOWEST CONDUCTIVITY 4.17E-03 1.18E+01 P:\Duke Energy Progress.1026\104. Lee Ash Basin GW Assessment\19.EG_CSASUP\tables\Table 2-3 In -Situ Hydraulic Conductivity.xlsx Page 1 of 5 TABLE 2-3 IN -SITU HYDRAULIC CONDUCTIVITY TEST RESULTS H.F. LEE ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, GOLDSBORO, NC Surficial Groundwater Well ID Slug Test Slug Test Number Hydraulic Conductivity (cm/sec) Hydraulic Conductivity (ft/day) Measured Geometeric Mean Measured Geometeric Mean Unconfined Aquifer Active Ash Basin ABMW-01S Slug In Test 2 7.67E-04 8.38E-04 2.17E+00 2.38E+00 Test 3 7.66E-04 2.17E+00 Slug Out Test 1 8.95E-04 2.54E+00 Test 2 9.40E-04 2.66E+00 AMW-14S Insufficient amount of water in well AMW-11S Slug In Test 1 5.01E-04 3.58E-04 1.42E+00 1.01E+00 Test 2 3.48E-04 9.85E-01 Test 3 3.97E-04 1.13E+00 Slug Out Test 1 3.36E-04 9.53E-01 Test 2 2.88E-04 8.15E-01 Test 3 3.14E-04 8.91E-01 AMW-12S Slug Out Test 1 9.01E-06 9.01E-06 2.55E-02 2.55E-02 AMW-15S Slug Out Test 1 2.62E-02 2.53E-02 7.43E+01 7.19E+01 Test 3 2.45E-02 6.95E+01 Inactive Ash Basin IABMW-01S Slug Out Test 1 4.29E-05 4.29E-05 1.22E-01 1.22E-01 LLMW-01S Slug Out Test 1 5.88E-04 8.29E-04 1.67E+00 2.35E+00 Test 2 9.09E-04 2.58E+00 Test 3 9.92E-04 2.81E+00 Test 4 8.91E-04 2.53E+00 LLMW-02S Slug Out Test 1 6.89E-06 6.89E-06 1.95E-02 1.95E-02 LLMW-03S Slug Out Test 1 1.23E-04 1.23E-04 3.49E-01 3.49E-01 Confined Aquifer Active Ash Basin AMW-04BC Slug Out Test 1 1.84E-02 1.90E-02 5.21E+01 5.38E+01 Test 2 1.91E-02 5.40E+01 Test 3 1.98E-02 5.60E+01 Test 4 1.90E-02 5.39E+01 Test 5 1.87E-02 5.30E+01 AMW-13S Slug In Test 3 8.90E-03 g 97E-03 2.52E+01 2.83E+01 Test 4 1.30E-02 3.68E+01 Test 5 8.51E-03 2.41E+01 Slug Out Test 2 8.26E-03 2.34E+01 Test 4 1.02E-02 2.90E+01 Test 6 1.18E-02 3.35E+01 AMW-17S*** Slug Out Test 1 1.13E-02 1.10E-02 3.21E+01 3.13E+01 Test 2 1.18E-02 3.36E+01 Test 3 1.00E-02 2.84E+01 P:\Duke Energy Progress.1026\104. Lee Ash Basin GW Assessment\19.EG_CSASUP\tables\Table 2-3 In -Situ Hydraulic Conductivity.xlsx Page 2 of 5 TABLE 2-3 IN -SITU HYDRAULIC CONDUCTIVITY TEST RESULTS H.F. LEE ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, GOLDSBORO, NC Surficial Groundwater Well ID Slug Test Slug Test Number Hydraulic Conductivity (cm/sec) Hydraulic Conductivity (ft/day) Measured Geometeric Mean Measured Geometeric Mean AMW-18S Slug Out Test 1 1.91E-03 2.00E-03 5.43E+00 5.66E+00 Test 2 1.95E-03 5.52E+00 Test 3 2.14E-03 6.07E+00 CCR-100S** Slug Out Test 1 1.98E-03 1.91E-03 5.63E+00 5.41E+00 Test 2 1.77E-03 5.01E+00 Test 3 1.98E-03 5.60E+00 Inactive Ash Basin IABMW- 02S** Slug Out Test 1 6.60E-05 6.75E-05 1.87E-01 1.91E-01 Test 3 6.91E-05 1.96E-01 IABMW- 03S** Slug Out Test 1 2.36E-03 2.58E-03 6.68E+00 7,32E+00 Test 2 2.83E-03 8.03E+00 IMW-01S Slug Out Test 1 7.33E-03 7.60E-03 I 2.08E+01 2.16E+01 Test 2 7.92E-03 2.24E+01 Test 3 7.71E-03 2.19E+01 Test 4 7.39E-03 2.09E+01 Test 5 1 7.69E-03 2.18E+01 IMW-04S*** Slug Out Test 1 1.32E-03 1.27E-03 3.74E+00 3.59E+00 Test 2 1.29E-03 3.65E+00 Test 3 1.20E-03 3.40E+00 IMW-05S Slug Out Test 1 8.33E-05 8.33E-05 2.36E-01 2.36E-01 GEOMETRIC MEAN 1.71E-03 4.85E+00 HIGHEST CONDUCTIVITY 2.62E-02 7.43E+01 LOWEST CONDUCTIVITY 6.89E-06 1.95E-02 P:\Duke Energy Progress.1026\104. Lee Ash Basin GW Assessment\19.EG_CSASUP\tables\Table 2-3 In -Situ Hydraulic Conductivity. xlsx Page 3 of 5 TABLE 2-3 IN -SITU HYDRAULIC CONDUCTIVITY TEST RESULTS H.F. LEE ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, GOLDSBORO, NC Black Creek Confining Unit Well ID Slug Test Slug Test Number Hydraulic Conductivity (cm/sec) Hydraulic Conductivity (ft/day) Measured Geometeric Mean Measured Geometeric Mean Active Ash Basin AMW-06RBC Slug Out Test 1 1.01E-03 9.86E-04 2.86E+00 2.80E+00 Test 2 8.97E-04 2.54E+00 Test 3 1.07E-03 3.02E+00 Test 4 9.81E-04 2.78E+00 AMW-14BC Slug Out Test 1 1.85E-03 1.98E-03 5.24E+00 5.60E+00 Test 2 2.09E-03 5.91E+00 Test 3 2.04E-03 5.79E+00 Test 4 1.93E-03 5.48E+00 AMW-15BC Slug Out Test 1 4.17E-03 4.55E-03 1.18E+01 1.29E+01 Test 2 4.76E-03 1.35E+01 Test 3 4.70E-03 1.33E+01 Test 4 4.61E-03 1.31E+01 AMW-17BC Slug Out Test 1 7.89E-06 7.89E-06 2.24E-02 2.24E-02 AMW-18BC DRY GEOMETRIC MEAN 1.35E-03 3.82E+00 HIGHEST CONDUCTIVITY 4.76E-03 1.35E+01 LOWEST CONDUCTIVITY 7.89E-06 2.24E-02 P:\Duke Energy Progress.1026\104. Lee Ash Basin GW Assessment\19.EG_CSASUP\tables\Table 2-3 In -Situ Hydraulic Conductivity.xlsx Page 4 of 5 TABLE 2-3 IN -SITU HYDRAULIC CONDUCTIVITY TEST RESULTS H.F. LEE ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, GOLDSBORO, NC Cape Fear Groundwater Well ID Slug Test Slug Test Number Hydraulic Conductivity (cm/sec) Hydraulic Conductivity (ft/day) Measured Geometeric Mean Measured Geometeric Mean Active Ash Basin AMW-09BC Slug In Test 1 7.15E-04 5.63E-04 2.03E+00 1.60E+00 Slug Out Test 1 5.27E-04 1.49E+00 Test 2 5.08E-04 1.44E+00 Test 3 5.25E-04 1.49E+00 AMW-11BC Slug In Test 1 5.46E-04 4.66E-04 1.55E+00 1.32E+00 Slug Out Test 1 3.54E-04 1.00E+00 Test 3 5.44E-04 1.54E+00 Test 4 4.50E-04 1.28E+00 AMW-12BC Slug In Test 1 7.42E-06 1.20E-05 2.10E-02 3.41E-02 Slug Out Test 1 1.96E-05 5.54E-02 AMW-13BC Slug In Test 2 1.31E-03 1.65E-03 3.71E+00 4.68E+00 Slug Out Test 1 1.86E-03 5.27E+00 Test 2 1.81E-03 5.14E+00 Test 3 1.69E-03 4.79E+00 AMW-16BC Slug Out Test 1 8.05E-05 7.86E-05 2.28E-01 2.23E-01 Test 2 7.68E-05 2.18E-01 Inactive Ash Basin IMW-01BC Slug Out Test 1 1.56E-06 1.56E-06 4.43E-03 4.43E-03 IMW-02BC Slug Out Test 1 2.16E-06 2.16E-06 6.13E-03 6.13E-03 IMW-03BC Slug Out Test 1 4.12E-06 4.12E-06 1.17E-02 1.17E-02 IMW-04BC Slug Out Test 1 5.53E-06 5.53E-06 1.57E-02 1.57E-02 IMW-05BC Slug Out Test 1 1.05E-05 1.05E-05 2.97E-02 2.97E-02 IMW-03S Slug Out Test 1 2.41E-06 2.41E-06 6.82E-03 6.82E-03 GEOMETRIC MEAN HIGHEST CONDUCTIVITY LOWEST CONDUCTIVITY 9.78E-05 2.77E-01 1.86E-03 5.27E+00 1.56E-06 4.43E-03 Prepared by: RAG Checked by:HJF Notes: Slug tests were analyzed using the Hvorslev mathmatical model. *Not enough water for Slug -In test, only Slug -Out was analyzed. **Bouwer-Rice was used since the well was screened across the water table and exhibited a double straight-line effect. ***Springer-Gelhar mathmatical model was used due to underdamped response. Surficial Sand Sediments Surficial Clay Black Creek Aquifer Black Creek Confining Unit P:\Duke Energy Progress.1026\104. Lee Ash Basin GW Assessment\19.EG_CSASUP\tables\Table 2-3 In -Situ Hydraulic Conductivity.xlsx Page 5 of 5 TABLE 4-1 PROVISIONAL BACKGROUND CONCENTRATIONS - SURFICIAL GROUNDWATER H.F LEE ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, GOLDSBORO, NC Analytical Parameter Reporting Units NC2L Standard Number of Wells Number of Samples Number of Detections Frequency of Detections (o �0) Surficial Detected Background Concentration Minimum Detected Background Back g Concentration Maximum Provisional Background g Concentration** pH S.U. 6.5-8.5 6 25 25 100 4.1 6.7 4.1 - 6.7° Antimony pg/L 1 6 25 0 0 ND ND ND Arsenic Ng/L 10 6 25 0 0 ND ND ND Barium pg/L 700 6 25 25 100 16 426 718.8 Beryllium Ng/L 4 6 25 1 4 ND 0.44 0.44' Boron pg/L 700 6 25 0 0 ND ND ND Chromium Ng/L 10 6 25 0 0 ND ND ND Chromium (VI) pg/L 0.07^ 6 13 9 69 0.033 0.11 0.399 Cobalt Ng/L 1* 6 25 23 92 1.18 14.9 44.79 Iron pg/L 300 6 23 23 100 14 25,900 31,854 Lead Ng/L 15 6 25 1 4 ND 0.15 0.15' Manganese pg/L 50 6 23 22 96 12 880 557 Selenium pg/L 20 6 25 2 8 0.75 1.14 1.351 Sodium mg/L NE 6 25 25 100 3.6 20.3 24.83 Strontium Ng/L NE 6 24 24 100 17 125 124.5 Sulfate mg/L 250 6 23 22 96 1.4 25 199.5 Thallium Ng/L 0.2* 6 25 0 0 ND ND ND TDS mg/L 500 6 23 23 100 28 140 260.5 Vanadium Ng/L 0.3* 6 24 7 29 0.307 0.627 Prepared by: MCD Checked by: HHS Notes: A = Indicates comparative value Wells Included for background analysis: AMW-11S, AMW-12S, AMW-13S, IMW-01S, IMW-03S, and SMW-02. Only those parameters for which a 2L is exceeded in the referenced hydrostratigraphic unit are included, plus Strontium as an indicator parameter 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\104. Lee Ash Basin GW Assessment\19.EG_CSASUP\tables\Table 4-1 Provisional Background Concentrations - Surficial Groundwater.xlsx Page 1 of 1 TABLE 4-2 PROVISIONAL BACKGROUND CONCENTRATIONS - CAPE FEAR GROUNDWATER H.F. LEE ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, GOLDSBORO, NC Analytical Parameter Reporting Units NC2L Standard Number of Wells Number of Data Sets Number of Detections Frequency of Detections (e/o) Cape Fear Detected Background Concentration Minimum Detected Background Concentration Maximum Provisional Background Concentration** pH S.U. 6.5-8.5 6 29 29 100 6.1 8.2 6.1 - 8.2° Arsenic Ng/L 10 6 29 8 28 0.5 1.69 2.833 Boron pg/L 700 6 29 18 62 51 320 317.5 Chromium pg/L 10 6 29 2 7 1.52 2.24 2.201 Chromium (VI) Ng/L 0.07^ 6 17 2 12 0.036 0.054 0.0575 Cobalt pg/L 1* 6 27 6 22 0.73 1.41 2.616 Iron pg/L 300 6 29 29 100 75 12,600 39,795 Manganese Ng/L 50 6 29 29 100 16 1,560 1,540 Sodium mg/L NE 6 29 28 97 3.78 128 123.5 Strontium pg/L NE 6 29 29 100 23 150 146.5 TDS mg/L 500 6 27 26 96 65 370 586.7 Vanadium pg/L 0.3* 6 29 4 14 0.324 0.637 1.069 Prepared by: MCD Checked by: HHS Notes: n = Indicates comparative value Wells included for background analysis: AMW-11BC, AMW-12BC, AMW-13BC, IMW-01BC, IMW-02BC, and IMW-035C. Only those parameters for which a 2L is exceeded in the referenced hydrostratigraphic unit are included, plus Strontium as an indicator parameter 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\104. Lee Ash Basin GW Assessment\19.EG_CSASUP\tables\Table 4-2 Provisional Background Concentrations - Cape Fear Groundwater.xlsx Page 1 of 1 TABLE 4-3 PROVISIONAL GROUNDWATER BACKGROUND CONCENTRATIONS - BLACK CREEK AQUIFER H.F LEE ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, GOLDSBORO, NC Analytical y Parameter Reporting P g Units NC2L Standard Number of Wells Number of Samples Number of Detections Frequency of Detections (��p) Black Creek Detected Background Concentration Provisional Background Concentration** pH S.U. 6.5-8.5 1 1 1 100 7.3 7.3 Aluminum pg/L NE 1 1 1 100 141 141 Antimony pg/L 1 1 1 0 0 ND ND Arsenic pg/L 10 1 1 0 0 ND ND Barium pg/L 700 1 1 1 100 44 44 Beryllium pg/L 4 1 1 0 0 ND ND Boron pg/L 700 1 1 1 100 262 262 Cadmium pg/L 2 1 1 0 0 ND ND Chromium pg/L 10 1 1 0 0 ND ND Chromium (VI) pg/L 0.07^ 1 1 1 100 0.16 0.16 Cobalt Ng/L 1* 1 1 1 100 1.11 1.11 Copper pg/L 1000 1 1 1 100 1.17 1.17 Iron Ng/L 300 1 1 1 100 507 507 Lead ug/L 15 1 1 0 0 ND ND Manganese pg/L 50 1 1 1 100 52 52 Mercury pg/L 1 1 1 0 0 ND ND Molybdenum pg/L NE 1 1 1 100 1.04 1.04 Nickel pg/L 100 1 1 1 100 3 3 Selenium pg/L 20 1 1 0 0 ND ND Sodium mg/L NE 1 1 1 100 40.1 40.1 Strontium pg/L NE 1 1 1 100 153 153 Sulfate mg/L 250 1 1 1 100 65 65 Thallium pg/L 0.2* 1 1 0 0 ND ND TDS mg/L 500 1 1 1 100 220 220 Vanadium pg/L 0.3* 1 1 1 100 1.15 Zinc pg/L 1000 1 1 0 0 ND ND Prepared by: ]HG Checked by: MCD Notes: 0 = Indicates comparative value Wells Included for background analysis: AMW-17BC. Only those parameters for which a 2L is exceeded in the referenced hydrostratigraphic unit are included, plus Strontium as an indicator parameter 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. °Provislonal background concentration is the maximum observed background concentration. P:\Duke Energy Progress.1026\104. Lee Ash Basin GW Assessment\19.EG_CSASUP\tables\Table 4-3 Provisional Background Concentrations - Black Creek Groundwater.xlsx Page 1 of 1 TABLE 4-4 SURFICIAL GROUNDWATER EXCEEDANCES INCORPORATING PROVISIONAL BACKGROUND H.F LEE ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, GOLDSBORO, NC Analytical Parameter PH Water Level Temp Spec Coed DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Barium Beryllium Boron Chromium (VI) Chromium Cobalt Iron Lead Manganese Nitrate (as N) 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 ug/L ug/L ug/L ug/L ug/L ug/L mg-N/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 4* 700 0.07A 10 1* 300 15 50 10 20 NE NE 250 0.2* 500 0.3* Active Ash Basin 4.1-6.7 NE NE NE NE NE NE NE NE NE NE 718.8 0.44 NE 0.399 NE 44.79 31854 0.15 557 NE 1.351 24.83 124.5 199.5 NE 260.5 2.155 Sample ID Sample Collection Date Field Parameters -T Analytical Results Background AMW-11S 03/02/2015 5.6 4.40 13 82 1.76 9 214 6.96 0 <1 <1 16 <1 <50 NA <1 12.5 252 <1 476 0.151 <1 6.3 32 5.7 <0.2 55 <0.3 AMW-11S 06/11/2015 4.4 6.50 17 70 1.55 293 498 2.84 0 <1 <1 119 <1 <50 NA <1 9.13 60 <1 139 0.025 <1 6.09 31 6.2 <0.2 48 <0.3 AMW-11S DUP 0611112015 4.4 6.50 17 70 1.55 293 498 2.84 0 <1 <1 120 <1 <50 NA <1 8.61 57 <1 137 0.023 <1 5.98 31 5.8 <0.2 47 <0.3 AMW-11S 09/24/2015 5.3 8.55 19 56 2.4 193 398 5.34 NM <1 <1 64 <1 <50 NA <1 7.65 973 <1 131 NA <1 5.64 17 NA <0.2 NA 0.56 AMW-11S 12/04/2015 5.0 5.38 16 57 5 322 527 1.35 0 <1 <1 95 <1 <50 0.041 <1 7.96 44 <1 96 0.075 <1 4.92 23 5.4 <0.2 32 <0.3 AMW-11S 01/12/2016 5.1 1 3.73 16 57 1.23 141 346 1.69 0 <1 <1 119 <1 <50 1 0.049 <1 7.54 31 <1 74 0.084 1 <1 5.14 24 4.8 <0.2 41 <0.3 AMW-11S 03/01/2016 4.9 C 3.95 15 57 C 1.76 C 248 453 2.4 0 <1 <1 124 <1 <50 0.035 <1 6.76 14 <1 45 0.216 <1 4.47 24 5.8 <0.2 28 <0.3 AMW-11S 0610712016 4.7 6.41 18 63 4.09 327 532 1.87 0 <1 <I 135 <1 <50 0.046 <1 6.59 83 <1 40 0.034 <1 4.86 24 7 <0.2 25 <0.3 AMW-11S 0810312016 4.8 6.80 20 63 3.47 169 374 2.31 0 <1 <1 128 <1 <50 0.085 <1 6.58 154 <1 43 0.04 <1 5.08 23 6.5 <0.2 30 <0.3 AMW-11S DUP 0810312016 4.8 6.80 20 63 3.47 169 374 2.31 0 <1 <1 124 <1 <50 0.058 <1 6.68 <10 <1 40 0.04 <1 5.7 22 6.6 <0.2 <25 <0.3 AMW-12S 03/02/2015 5.4 5.20 13 111 7.1 143 348 9.1 0.25 <1 <1 177 <1 <50 NA <1 4.05 333 <1 67 4.5 <1 6.6 59 3.2 <0.2 72 <0.3 AMW-12S 06/10/2015 4.4 10.08 21 95 2.55 146 351 3.06 0 <1 <1 152 <1 <50 NA <1 3.17 60 <1 20 4.2 <1 4.25 26 4.9 <0.2 56 <0.3 AMW-12S 12/04/2015 4.1 10.80 11 98 0.4 56 261 1.7 ND <1 <1 47 <1 <50 <0.03 <1 <1 8720 <1 176 4.3 <1 7.82 28 6.4 <0.2 43 <0.3 AMW-12S 01/11/2016 4.2 7.80 15 90 3.4 371 576 7.1 0 <1 <1 137 <1 <50 0.085 <1 2.91 209 <1 19 3.9 <1 4.08 24 4 <0.2 41 0.471 AMW-12S 03/01/2016 4.3 7.11 17 97 4.91 299 504 1.2 0 <1 <1 130 <1 <50 0.088 <1 3.01 50 <1 17 4.2 <1 4.06 23 2.4 <0.2 40 <0.3 AMW-12S 0610812016 4.1 9.29 22 99 3.63 373 578 2.85 0 <1 <1 122 <1 <50 0.14 <1 2.14 25 <1 16 3.7 <1 3.88 22 3.9 <0.2 47 <0.3 AMW-12S 0810412016 4.0 14.03 21 90 3.53 295 500 5.09 0 <1 <1 105 1.24 <50 0.13 <1 2.09 111 <1 14 3.2 <1 3.44 20 4 <0.2 54 0.387 AMW-13S 0310312015 5.7 4.47 11 237 2.9 -117 88 60.5 0.25 <1 <1 136 <1 <50 NA 3.78 35.7 2380 <1 727 <0.01 <1 22.7 78 14 <0.2 210 6.71 AMW-13S 06/10/2015 5.2 12.19 21 200 2.18 176 381 4.06 0.5 <1 <1 96 <1 <50 NA <1 <1 66 <1 26 0.023 <1 20.3 66 16 <0.2 140 <0.3 AMW-13S 12/04/2015 5.9 8.90 18 86 4.6 99 304 1 ND <1 <1 52 <1 <50 0.033 <1 2.29 34 <1 12 0.081 <1 8.51 30 15 <0.2 83 <0.3 AMW-13S 01/11/2016 6.7 3.08 16 211 1.92 98 303 3.46 NM <1 <1 73 <1 <50 0.095 <1 8.06 122 <1 24 0.041 <1 12 42 18 <0.2 86 0.398 AMW-13S 03/01/2016 5.6 3.75 16 84 5.61 212 417 7.7 0 <1 <1 47 <1 <50 0.094 <1 1.18 415 <1 <5 0.453 <1 7.21 34 15 <0.2 67 0.59 AMW-13S 06/08/2016 5.3 10.96 18 179 4.2 217 422 0.68 0 <1 <1 88 <1 <50 0.11 <1 <1 28 <1 <5 0.027 <1 18.5 59 15 <0.2 120 <0.3 AMW-13S 08/03/2016 5.5 11.32 22 94 4.61 302 507 0.99 0 <1 <1 49 <1 <50 0.31 <1 <1 14 <1 <5 0.15 <1 10 34 14 <0.2 75 <0.3 AMW-17S 07/28/2016 4.6 6.01 23 134 1.94 450 655 2.34 NM <1 <1 73 <1 63 <0.03 <1 2.21 49 <1 38 2.8 <1 9.57 49 35 <0.2 80 <0.3 CCR-100S 0712012016 4.6 26.32 20 169 5.89 446 651 8.53 NM <1 <1 528 <1 <50 <0.03 <1 5.64 70 2.61 119 10 <1 3.74 92 4.9 <0.2 110 0.462 SMW-2 0912412013 5.5 NM 17 192 1.61 62 NM 22.4 NM <0.34 2.6 23.9 NA 48.6 j NA <1.6 NA 5040 0.37 j 133 0.61 <0.5 23.4 NA 27.8 <0.15 152 NA SMW-2 06/16/2015 4.9 25.50 24 152 3.88 244 449 4.98 0 <1 <1 338 <1 <50 NA <1 1.62 100 <1 61 8.5 <1 3.95 93 4.3 <0.2 110 0.307 SMW-2 03/04/2016 4.7 24.35 10 154 6.69 260 465 9.7 0 <1 <1 426 <1 <50 <0.03 <1 2.51 129 <1 67 9.3 <1 3.6 85 7 <0.2 120 0.402 SMW-2 06/07/2016 4.7 25.76 22 175 4.77 293 498 2.48 0 <1 <1 455 <1 <50 <0.03 <1 2.11 18 <1 70 11 <1 3.01 103 4.4 <0.2 120 0.323 IMW-0IS 05/26/2015 5.4 4.72 20 172 0.43 66 271 8.9 2.5 <1 <1 194 <1 <50 NA <1 6.21 3150 <1 258 2.7 1.14 7.78 115 24 <0.2 97 0.627 IMW-01S 06/12/2015 5.6 5.29 19 166 0.53 205 410 1.73 2 <1 <1 206 <1 <50 NA <1 4.36 2230 <1 234 3.2 <1 7.8 123 25 <0.2 110 <0.3 IMW-0IS 09/24/2015 5.3 7.80 20 158 0.5 150 355 0.67 NM <1 <1 208 <1 <50 NA <1 2.43 195 <1 102 NA <1 7.22 125 NA <0.2 NA <0.3 IMW-0IS 12/06/2015 5.5 3.63 17 283 0.96 103 308 7.35 1 <0.5 <0.5 190 0.44 <50 <0.03 <0.5 3.4 2100 0.15 130 3.2 0.75 7.61 110 20 <0.1 b 81 <1 IMW-0IS 03/01/2016 5.1 3.53 16 152 1.6 94 299 7.7 0.3 <1 <1 188 <1 <50 0.11 <1 3.86 1290 <1 131 3.6 NI <1 7.97 109 22 <0.2 88 0.313 IMW-01S 0610712016 5.2 3.77 18 153 0.6 104 309 2.8 0.2 <2 <2 179 <1 <50 0.18 <1 3.95 411 <1 107 4.4 <1 6.97 122 22 <0.2 110 <0.3 IMW-01S DUP 0610712016 5.2 3.77 18 153 0.6 104 309 2.8 0.2 <1 <1 184 <1 <50 0.18 <1 4.08 414 <1 109 4.4 <1 7 124 24 <0.2 100 <0.3 IMW-015 0810312016 4.9 4.47 20 150 1.46 310 515 1.29 0 <1 <1 216 1.07 <50 0.5 <1 3.68 114 <1 89 4.7 <I 7.77 106 23 <0.2 93 <0.3 IMW-03S 05/28/2015 5.8 3.28 21 136 4.13 47 252 9.54 1.5 <1 <1 154 <1 <50 NA <1 13.3 4220 <1 556 <0.01 <1 6.94 61 1.5 <0.2 85 <0.3 IMW-03S 06/16/2015 5.7 3.40 26 135 2.23 -44 161 4.62 2.5 <1 <1 142 <1 <50 NA <1 12.2 6320 <1 722 <0.01 <1 8.05 67 1.4 <0.2 94 <0.3 IMW-03S 12/06/2015 6.4 1.45 14 215 0.4 -46 159 3.82 3 <0.5 <0.5 230 <0.2 <50 <0.03 <0.5 14.9 25900 <0.1 880 <0.02 <0.5 6.85 100 <1 <0.1 132 <1 IMW-03S 0111312016 6.4 1.40 14 150 0.3 -66 139 55.7 7 <1 <1 236 <1 <50 <0.03 5.42 16.2 35100 <I 822 0.039 <1 7.14 107 <0.1 <0.2 110 <0.3 IMW-03S 0310212016 6.3 1.38 16 165 0.49 165 370 14.5 7 <1 <1 188 <1 <50 <0.03 <1 9.9 14700 <1 571 <0.01 <1 7.06 80 0.34 <0.2 120 <0.3 IMW-03S 0610812016 6.6 1.73 20 272 0.2 -94 111 2.6 6 <1 <1 225 <1 <50 <0.15 D3 <2 12.5 34500 <I 760 <0.01 <I 6.29 109 0.24 <0.2 120 <0.3 IMW-03S 0810312016 6.5 2.49 24 295 0.23 -19 186 2.13 5.5 <1 1.08 276 <1 <50 <0.6 D3 <1 15.8 43200 <1 690 <0.01 <1 5.68 91 0.29 <0.2 110 <0.3 Active Ash Basin ABMW-01S 03/19/2015 6.9 24.01 16 939 0.22 -90 115 8.31 1.5 <1 745 574 <1 2660 NA <1 6.17 19900 <1 1160 <0.1 <1 32.3 4320 39 <0.2 510 0.512 ABMW-01S 06/11/2015 6.9 24.65 24 941 0.38 -138 67 4.49 1.5 <1 833 601 <1 2550 NA <1 1.43 19600 <1 1170 <0.01 <1 34 4330 29 <0.2 530 0.303 ABMW-01S 12/04/2015 6.7 25.40 17 1045 0.18 -149 56 0.99 2.6 <1 1040 688 <1 2800 <0.03 <1 7.14 33600 <1 1440 <0.01 <1 37 4600 32 <0.2 570 <0.3 P:\Duke Energy Progress. 1026\104. Lee Ash Basin GW Assessment\19.EG_CSASUP\tables\Table 4-4 Surficial Groundwater Exceedances Incorporating Provisional Background.xlsx Page 1 of 9 TABLE 4-4 SURFICIAL GROUNDWATER EXCEEDANCES INCORPORATING PROVISIONAL BACKGROUND H.F LEE ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, GOLDSBORO, NC Analytical Parameter PH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Barium Beryllium Boron Chromium (VI) Chromium Cobalt Iron Lead Manganese Nitrate (as N) 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 ug/L ug/L ug/L ug/L ug/L ug/L mg-N/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 4* 700 0.07^ 10 1* 300 15 50 10 20 NE NE 250 0.2* 500 0.3* Active Ash Basin 4.1-6.7 NE NE NE NE NE NE NE NE NE NE 718.8 0.44 NE 0.399 NE 44.79 31854 0.15 557 NE 1.351 24.83 124.5 199.5 NE 260.5 2.155 Sample ID Sample Collection Date Field Parameters Analytical Results ABMW-01S 01/12/2016 6.9 24.30 15 1032 0.35 -133 72 0.97 3.5 <1 1080 730 <1 3070 <0.03 <1 7.37 34300 <1 1460 0.019 <1 35.9 4790 34 <0.2 580 <0.3 AMW-04BC 05/21/2015 7.8 11.37 19 422 0.29 -156 49 8.57 3.25 <1 <1 200 <1 115 NA <1 <1 6190 <1 118 0.028 <1 24.7 215 22 <0.2 240 0.521 AMW-04BC 06/09/2015 8.0 12.67 18 404 0.69 -126 79 2.76 0.5 <1 <1 205 <1 116 NA <1 <1 3460 <1 75 <0.01 <1 24.1 208 19 <0.2 220 0.322 AMW-04BC 02/01/2016 7.0 8.13 17 439 0.87 91 296 6.42 0.5 <1 <1 180 <1 121 <0.03 <1 <1 418 <1 18 0.033 <1 26.8 258 32 <0.2 260 0.489 AMW-14S 05/20/2015 5.4 4.25 25 4 8.27 86 291 43.1 2.7 <1 1.72 74 <1 <50 NA <1 4.91 12700 <1 159 0.021 <1 11.4 67 29 <0.2 100 0.605 AMW-14S 06/11/2015 6.2 5.34 20 186 0.57 130 335 4.5 3.5 <1 2.1 95 <1 <50 I NA <1 6.05 15800 <1 160 <0.01 <1 8.73 69 31 <0.2 110 0.373 AMW-14S 12/04/2015 5.9 4.08 17 146 0.13 -13 192 9.11 2.5 <1 1.85 64 <1 <50 <0.03 <1 3.78 11300 1 <1 110 <0.01 <1 9.57 52 24 <0.2 120 0.407 AMW-14S 01/12/2016 6.0 4.05 13 109 0.28 -3 202 2.9 3 <1 1.18 57 <1 <50 <0.03 Al <1 2.9 6200 <1 78 0.015 <1 11.5 41 21 <0.2 89 0.332 AMW-15S 05/21/2015 6.0 4.43 18 127 0.3 3 208 7.28 3.25 1 <1 <1 57 <1 149 NA 1.21 <1 3490 <1 66 0.014 <1 7.78 73 22 <0.2 77 1.75 AMW-15S 06/11/2015 5.8 5.90 18 136 0.45 120 325 2.86 2 <1 <1 62 <1 124 NA 1.15 <1 3950 <1 76 <0.01 <1 8.25 76 20 <0.2 73 1.92 AMW-15S 12/06/2015 5.7 1 3.74 16 123 0.3 133 338 2.46 0.5 <0.5 1.1 56 <0.2 150 <0.03 0.52 0.86 1100 <0.1 40 <0.02 I <0.5 7.84 78 23.9 1 <0.1 b 53 1.2 AMW-15S 01/12/2016 5.7 3.45 15 115 0.94 1 133 338 1.4 1 <1 <1 58 <1 97 <0.03 <1 1.09 836 <1 47 0.092 <1 8.41 83 27 <0.2 61 1.67 AMW-18S 07/28/2016 6.1 10.68 23 433 0.31 76 281 8.81 NM <1 15.6 116 <1 2250 1.7 M6 <1 7.14 14700 1 <1 337 <0.01 <1 21.7 517 63 <0.2 240 0.933 BGMW-9 12/15/2010 5.7 3.74 10 154 NM NM NM 50 NM <0.5 <5 154 NA <50 NA <5 NA 919 <5 79.4 NA <10 NA NA 15.8 0.13 206 NA BGMW-9 03/03/2011 5.6 3.59 11 350 2.4 198 403 12.4 NM <0.5 <5 173 NA <50 NA <5 NA 757 <5 185 NA <10 NA NA 24.1 b <0.1 228 b NA BGMW-9 06/08/2011 5.7 6.51 20 466 0.86 -43 162 16.5 NM <0.5 <5 188 NA <50 NA <5 NA 784 <5 322 NA <10 NA NA 31.6 <0.1 208 NA BGMW-9 10/05/2011 5.7 1 8.06 19 227 2.01 -42 164 8.24 NM <0.5 <5 131 NA 52.5 NA <5 NA 1720 <5 67.4 NA <10 NA NA 17.6 <0.1 145 NA BGMW-9 03/14/2012 5.8 3.59 16 487 1.11 -55 150 16 NM <0.5 <5 157 NA 56.5 NA <5 NA 497 <5 43.1 NA <10 NA NA 92.7 <0.1 295 NA BGMW-9 06/13/2012 5.6 4.28 20 278 1.12 -61 144 4.74 NM <0.5 <5 110 NA <50 NA <5 NA 580 1 <5 169 NA <10 NA NA 27.1 <0.1 152 NA BGMW-9 10/17/2012 6.2 8.88 18 293 1.61 23 228 9.62 NM <0.5 <5 148 NA 50.9 NA <5 NA 2960 <5 64.8 NA <10 NA NA 26.6 <0.1 161 NA BGMW-9 03/07/2013 5.6 3.59 10 413 3.68 241 446 26 NM <1 <1 113 NA <50 NA <5 NA 346 <1 13 NA <1 NA NA 50 <0.2 270 NA BGMW-9 06/05/2013 5.2 5.68 17 269 0.53 214 419 4.55 NM <1 <1 126 NA <50 NA <5 NA 215 <1 72 NA <1 NA NA 24 <0.2 170 NA BGMW-9 10/10/2013 5.6 1 6.31 19 296 0.59 181 386 9.82 NM <1 <1 137 NA <50 NA <5 NA 1120 <1 83 NA <1 NA NA 24 <0.2 180 NA BGMW-9 03/10/2014 5.7 3.49 13 1 432 1.27 262 467 9.65 NM <1 <1 144 NA <50 NA <5 NA 367 <1 27 NA <1 NA NA 38 <0.2 250 NA BGMW-9 06/11/2014 5.6 4.35 20 392 0.7 159 364 9.2 NM <1 <1 158 NA <50 NA <5 NA 792 1 <1 127 NA <1 NA NA 25 <0.2 230 NA BGMW-9 10/16/2014 5.7 3.59 19 433 0.36 106 311 9.27 NM <1 <1 161 NA <50 NA <5 NA 1730 <1 142 NA <1 NA NA 22 <0.2 220 NA BGMW-9 03/03/2015 5.8 3.46 8 652 1.57 309 514 6.44 NM <1 <1 174 NA <50 NA <5 NA 376 <1 45 <0.023 <1 NA NA 33 <0.2 380 NA BGMW-9 06/09/2015 5.9 5.65 19 370 0.48 46 251 7.46 1 <1 <1 134 <1 <50 NA <5 14.1 1730 <1 641 <0.023 <1 31 NA 23 <0.2 190 NA BGMW-9 10/06/2015 5.2 1 6.43 20 311 3.64 229 434 15.1 NM <1 <1 127 <1 <50 NA <5 1.85 1060 <1 65 0.03 <1 36.5 77 29 <0.2 200 1.59 BGMW-9 12/04/2015 6.2 3.75 14 412 0.2 -25 180 24.4 1.5 <5 <5 118 <5 <50 0.15 M1 5.18 30.9 9230 <5 833 <0.01 <5 47.6 195 20 <1 420 33.8 BGMW-9 01/12/2016 6.3 3.55 13 497 0.5 18 223 9.16 2 <1 4.35 137 <1 <50 0.065 7.07 27.2 1 28300 1 1.51 859 0.026 1.49 5.08 237 16 <0.2 420 59.7 BGMW-9 03/03/2016 7.1 3.62 11 459 0.26 -56 149 9.7 2 <1 3.17 117 <1 <50 NA <5 20 25200 <1 697 <0.023 1.22 44.4 189 18 <0.2 360 44 BGMW-9 06/06/2016 6.2 4.08 19 457 0.24 -124 81 3.36 NM I <1 2.33 114 <1 <50 NA <5 11.4 23500 <1 556 <0.023 <1 42.7 151 19 <0.2 280 15.3 BGMW-10 10/18/2012 6.2 6.40 17 128 0.92 -15 190 17 NM 0.59 <5 65.7 NA 59.8 NA <5 NA 6500 <5 75.6 NA <10 NA NA 8.5 <0.1 73 NA BGMW-10 03/07/2013 5.7 3.85 11 113 0.38 71 276 8.66 NM <1 <1 55 NA <50 NA <5 NA 6050 <1 83 NA <1 NA NA 8.4 <0.2 62 NA BGMW-10 06/05/2013 5.9 5.97 16 137 0.26 29 234 49.6 NM <1 6.63 67 NA <50 NA <5 NA 13500 <1 94 NA <1 NA NA 7.4 <0.2 78 NA BGMW-10 10/10/2013 5.7 4.77 17 111 0.16 83 288 37.9 NM <1 2.65 62 NA <50 NA <5 NA 7560 <1 87 NA <1 NA NA 9 <0.2 75 NA BGMW-10 03/10/2014 4.8 3.48 13 149 1.82 317 522 2.08 NM <1 <1 89 NA <50 NA <5 NA 465 <1 75 NA <1 NA NA 14 <0.2 79 NA BGMW-10 06/11/2014 4.8 4.44 21 143 0.27 248 453 5.8 NM <1 <1 101 NA <50 NA <5 NA 917 <1 72 NA <1 NA NA 11 <0.2 100 NA BGMW-10 10/17/2014 4.9 3.90 18 105 0.26 235 440 4.98 NM <1 <1 91 NA <50 NA <5 NA 1280 <1 48 NA <1 NA NA 14 <0.2 59 NA BGMW-10 03/03/2015 4.9 3.44 9 122 0.78 357 562 3.44 NM <1 <1 80 NA <50 NA <5 NA 366 <1 48 0.07 <1 NA NA 20 <0.2 72 NA BGMW-10 06/08/2015 4.8 5.20 19 118 0.32 194 399 4.25 0.5 <1 <1 94 <1 <50 NA <5 1.11 857 <1 57 0.36 <1 7.25 NA 16 <0.2 83 NA BGMW-10 10/06/2015 5.2 3.90 19 123 0.44 118 323 3.47 NM <1 <1 75 <1 <50 NA <5 2.07 4450 <1 68 <0.023 <1 8.95 65 22 <0.2 77 <0.3 BGMW-10 12/04/2015 5.7 3.76 15 112 0.7 151 356 4.8 2 <1 <1 96 <1 <50 <0.03 <1 1.49 1400 <1 78 <0.01 <1 7.12 78 17 <0.2 69 <0.3 BGMW-10 01/12/2016 4.8 3.63 15 130 0.5 203 408 8.95 0 <1 <1 120 <1 <50 <0.03 <1 1.29 1660 <1 81 0.052 <1 10.1 99 17 <0.2 81 0.675 BGMW-10 03/03/2016 4.8 3.72 12 185 0.42 319 524 4.8 0.5 <1 <1 167 <1 <50 NA <5 1.53 726 <1 72 0.02 <1 14.9 141 17 <0.2 120 0.351 BGMW-10 06/06/2016 4.8 4.26 18 124 0.46 224 429 1.84 NM <1 <1 133 <1 <50 NA <5 1.32 594 <1 66 0.79 <1 8.61 96 22 <0.2 72 0.438 CMW-5 12/13/2010 6.6 12.30 16 418 NM NM NM 8.2 NM <0.5 <5 96 NA 3090 NA <5 NA 1140 <5 64.4 NA <10 NA NA 92.2 <0.1 343 NA CMW-5 03/03/2011 6.5 10.76 14 508 0.81 142 347 0.78 NM <0.5 <5 67.5 b NA 2520 NA <5 NA 90.6 <5 86.9 NA <10 NA NA 76.7 <0.1 316 NA CMW-5 06/08/2011 6.4 12.51 21 497 0.93 -87 118 1.9 NM <0.5 <5 104 NA 3110 NA <5 NA 34L_L <5 39 NA <10 NA NA 15.5 <0.1 306 NA P:\Duke Energy Progress. 1026\104. Lee Ash Basin GW Assessment\19.EG_CSASUP\tables\Table 4-4 Surficial Groundwater Exceedances Incorporating Provisional Background.xlsx Page 2 of 9 TABLE 4-4 SURFICIAL GROUNDWATER EXCEEDANCES INCORPORATING PROVISIONAL BACKGROUND H.F LEE ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, GOLDSBORO, NC Analytical Parameter PH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Barium Beryllium Boron Chromium (VI) Chromium Cobalt Iron Lead Manganese Nitrate (as N) 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 ug/L ug/L ug/L ug/L ug/L ug/L mg-N/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 4* 700 0.07^ 10 1* 300 15 50 10 20 NE NE 250 0.2* 500 0.3* Active Ash Basin 4.1-6.7 NE NE NE NE NE NE NE NE NE NE 718.8 0.44 NE 0.399 NE 44.79 31854 0.15 557 NE 1.351 24.83 124.5 199.5 NE 260.5 2.155 Sample ID Sample Collection Date Field Parameters Analytical Results CMW-5 10/05/2011 6.3 12.76 21 587 0.47 -74 131 6.15 NM <0.5 <5 131 NA 3710 NA <5 NA 569 <5 163 NA <10 NA NA 98.4 <0.1 406 NA CMW-5 03/15/2012 6.3 11.62 16 486 1.6 -83 123 1.94 NM <0.5 <5 92.7 NA 3140 NA <5 NA 191 <5 50.5 NA <10 NA NA 132 <0.1 406 NA CMW-5 06/13/2012 6.3 12.69 20 544 1.22 -62 143 9.8 NM <0.5 <5 104 NA 3180 NA <5 NA 707 <5 35.2 NA <10 NA NA 97.7 <0.1 338 NA CMW-5 10/17/2012 6.8 12.72 20 665 0.7 -4 201 4.14 NM <0.5 <5 112 NA 3940 NA <5 NA 327 <5 79.3 NA <10 NA NA 99.4 <0.1 421 NA CMW-5 03/07/2013 6.0 8.45 12 413 3.68 113 318 7.19 NM <1 1.12 49 NA 2140 NA <5 NA 336 <1 15 NA <1 NA NA 85 <0.2 260 NA CMW-5 06/05/2013 5.9 12.41 16 504 0.76 140 345 4.45 NM <1 1.34 87 NA 3060 NA <5 NA 317 <1 38 NA <1 NA NA 84 <0.2 330 NA CMW-5 10/11/2013 6.5 12.00 19 619 0.51 70 275 7.62 NM <1 3.15 112 NA 3560 NA <5 NA 2350 1 <1 59 NA <1 NA NA 62 <0.2 390 NA CMW-5 03/10/2014 6.1 3.45 14 265 4.05 151 356 9.89 NM <1 2.77 47 NA 1120 NA <5 NA 651 <1 11 NA <1 NA NA 37 <0.2 160 NA CMW-5 DUP 03/10/2014 6.1 3.45 14 265 4.05 151 356 9.89 NM I <1 2.63 48 NA 1140 NA <5 NA 589 <1 11 NA <1 NA NA 37 <0.2 160 NA CMW-5 06/11/2014 6.3 11.23 19 311 0.36 108 313 5.1 NM <1 1.35 63 NA 1770 NA <5 NA 354 <1 35 NA <1 NA NA 49 <0.2 210 NA CMW-5 10/17/2014 6.7 1 7.16 19 456 0.11 10 215 8.47 NM <1 2.05 89 NA 2710 NA <5 NA 1220 <1 80 NA <1 NA NA 43 <0.2 290 NA CMW-5 DUP 10/17/2014 6.7 7.16 19 456 0.11 10 215 8.47 NM <1 2.02 89 NA 2780 NA <5 NA 1100 <1 81 NA <1 NA NA 43 <0.2 290 NA CMW-5 03/03/2015 6.2 3.17 8 212 4.32 227 432 17.1 NM <1 2.31 53 NA 773 NA <5 NA 619 <1 8 0.8 <1 NA NA 25 <0.2 130 NA CMW-5 06/08/2015 5.9 18.99 19 280 0.72 135 340 8.78 <0.5 <1 1.01 70 <1 1380 NA <5 <1 383 <1 18 0.03 <1 16.4 NA 30 <0.2 180 NA CMW-5 10/06/2015 5.8 4.62 20 232 2.7 180 385 26.9 NM <1 1.75 54 <1 694 NA <5 <1 897 1.21 21 0.96 <1 16.3 401 49 <0.2 190 3.53 CMW-5 DUP 10/06/2015 5.8 4.62 20 232 2.7 180 385 26.9 NM <1 1.69 54 <1 693 NA <5 <1 944 1.08 21 0.97 <1 16.4 404 48 <0.2 200 3.52 CMW-5 12/05/2015 6.0 1 7.84 16 440 0.3 100 305 1.85 0 <0.5 0.82 120 <0.2 2000 <0.03 <0.5 <0.5 170 <0.1 50 0.2 <0.5 21.7 920 73.2 <0.1 286 4.6 CMW-5 02/01/2016 6.7 6.71 15 582 0.42 1 84 1 199 5.61 288.6 <1 1.12 124 <1 2510 0.092 <1 1 372 <1 131 <0.01 <1 25.7 1660 78 <0.2 360 3.2 CMW-5 03/03/2016 7.5 3.88 15 580 0.21 -28 177 1.4 0.5 <1 <1 102 <1 2660 NA <5 <1 660 <1 126 <0.023 <1 26 1660 81 <0.2 370 2.15 CMW-5 DUP 03/03/2016 7.5 3.88 15 580 0.21 -28 177 1.4 0.5 <1 <1 102 <1 2670 NA <5 <1 679 <1 127 <0.023 <1 26.1 1660 81 <0.2 360 2.02 CMW-5 06/06/2016 6.5 10.22 20 521 1.13 52 257 8.61 NM <1 1.63 104 <1 2840 NA 6 <1 3480 <1 127 0.06 <1 27.8 1110 46 <0.2 300 7.98 CMW-6 12/14/2010 6.9 4.67 14 560 NM NM NM 1.48 NM <0.5 284 169 NA 4320 NA <5 NA 3510 <5 508 NA <10 NA NA 95.7 <0.1 455 NA CMW-6 03/03/2011 6.7 1 4.62 14 808 0.35 -111 94 8.94 NM <0.5 533 187 NA 4630 NA <5 NA 5190 <5 650 NA <10 NA NA 93.6 <0.1 492 NA CMW-6 06/08/2011 6.7 5.73 21 807 0.32 -147 58 0.92 NM <0.5 665 208 NA 4940 NA <5 NA 4530 <5 768 NA <10 NA NA 7.2 <0.1 461 NA CMW-6 DUP 06/08/2011 6.7 5.73 21 807 0.32 -147 58 0.92 NM <0.5 670 209 NA 4930 NA <5 NA 4550 <5 763 NA <10 NA NA 13.7 <0.1 482 NA CMW-6 10/05/2011 6.7 5.15 20 780 0.27 -189 16 0.8 NM <0.5 633 190 NA 4660 NA <5 NA 4500 <5 746 NA <10 NA NA 63 <0.1 449 NA CMW-6 03/14/2012 6.7 4.58 17 708 0.28 -175 30 5.04 NM <0.5 640 214 NA 4460 NA <5 NA 6230 <5 896 NA <10 NA NA 45.4 <0.1 498 NA CMW-6 06/13/2012 6.7 5.33 19 831 0.83 -155 50 1.34 NM <0.5 592 209 NA 4250 NA <5 NA 6790 <5 936 NA <10 NA NA 54.3 <0.1 479 NA CMW-6 09/25/2015 6.7 6.63 20 876 0.2 -109 96 8.83 NM <1 203 269 <1 3620 NA <1 <1 14800 <1 893 NA <1 31.1 3720 NA <0.2 NA 2.22 CMW-6R 10/18/2012 6.4 5.98 16 647 1.59 -89 116 4.76 NM <0.5 30.2 230 NA 3480 NA <5 NA 11000 <5 455 NA <10 NA NA 95 <0.1 386 NA CMW-6R 03/07/2013 5.7 4.76 11 291 0.3 -47 158 6.08 NM <1 10.2 131 NA 1360 NA <5 NA 11200 <1 183 NA <1 NA NA 52 <0.2 190 NA CMW-6R DUP 03/07/2013 5.7 4.76 11 291 0.3 -47 158 6.08 NM <1 10.9 136 NA 1420 NA <5 NA 11700 1 <1 193 NA <1 NA NA 52 <0.2 190 NA CMW-6R 06/05/2013 6.4 6.20 16 707 0.33 -22 183 1.29 NM <1 52.4 219 NA 3440 NA <5 NA 12900 <1 536 NA <1 NA NA 61 <0.2 400 NA CMW-6R 10/11/2013 6.5 6.19 18 668 0.32 -46 159 3.22 NM <1 51.3 223 NA 3400 NA <5 NA 12800 <1 519 NA <1 NA NA 66 <0.2 400 NA CMW-6R 03/10/2014 5.5 4.25 12 188 0.25 30 235 5.16 NM <1 3.09 74 NA 452 NA <5 NA 6660 <1 124 NA <1 NA NA 41 <0.2 120 NA CMW-6R 06/11/2014 6.3 5.99 17 608 0.3 -53 152 2.7 NM <1 36 202 NA 3160 NA <5 NA 13400 <1 482 NA <1 NA NA 69 <0.2 380 NA CMW-6R DUP 06/11/2014 6.3 5.99 17 608 0.3 -53 152 2.7 NM <1 34.5 201 NA 3110 NA <5 NA 13300 <1 475 NA <1 NA NA 69 <0.2 380 NA CMW-6R 10/17/2014 6.4 5.49 18 578 0.2 -30 175 6.57 NM <1 46.1 210 NA 3000 NA <5 NA 13600 1 <1 495 NA <1 NA NA 71 <0.2 370 NA CMW-6R 03/03/2015 5.8 4.25 9 203 0.14 -2 203 20.2 NM <1 6.95 67 NA 494 NA <5 NA 7420 <1 134 <0.023 <1 NA NA 39 <0.2 110 NA CMW-6R DUP 03/03/2015 5.8 4.25 9 203 0.14 -2 203 1 20.2 NM <1 7.11 67 NA 494 NA <5 NA 7360 <1 133 <0.023 <1 NA NA 39 <0.2 120 NA CMW-6R 06/09/2015 7.4 6.12 17 584 0.38 -78 127 4.9 6.5 <1 32.4 195 <1 2800 NA <5 3.64 13000 <1 443 <0.023 <1 29 NA 73 <0.2 320 NA CMW-6R 10/06/2015 5.5 5.22 20 296 0.23 31 236 9.68 NM <1 6.1 127 <1 848 NA <5 7.82 9680 <1 240 <0.023 <1 16.4 536 96 <0.2 170 2.34 CMW-6R 12/05/2015 5.6 4.94 16 235 0.14 -1 204 9.11 1 <0.5 4.6 110 <0.2 840 <0.03 1.2 4.2 9600 0.14 160 <0.02 <0.5 16.6 270 48.6 <0.1 170 2.8 CMW-6R 01/12/2016 5.6 4.70 15 127 0.2 -45 160 7.4 5.5 <1 2.91 91 <1 517 <0.03 2.35 5.04 7580 <1 135 0.025 <1 12 222 48 <0.2 140 2.71 CMW-6R 03/03/2016 6.4 4.78 12 191 0.25 27 232 3.4 3 <1 1.55 100 <1 580 NA <5 4.68 8290 <1 135 <0.023 <1 13.5 184 45 <0.2 120 2.37 CMW-6R 06/06/2016 6.4 5.92 18 552 0.22 -92 113 1 0.36 NM <1 34 182 <1 2600 NA <5 3.08 11100 <1 416 <0.023 <1 28.6 1300 77 <0.2 320 1.56 CMW-6R DUP 06/06/2016 6.4 5.92 18 552 0.22 -92 113 0.36 NM <1 33.8 186 <1 2650 NA <5 2.97 11400 <1 422 <0.023 <1 29.1 1270 78 <0.2 320 1.74 CMW-7 12/14/2010 5.9 17.42 1 12 301 1 NM NM NM 5.4 NM 1 <0.5 <5 213 NA 67.9 NA <5 NA 10600 <5 548 NA <10 NA NA <5 <0.1 265 NA CMW-7 03/03/2011 5.4 16.79 15 323 0.76 99 304 9.66 NM <0.5 5.1 149 NA 50.2 NA <5 NA 3960 <5 483 NA <10 NA NA 7.1 b <0.1 198 b NA CMW-7 06/08/2011 5.8 17.45 24 466 0.43 -46 159 0.89 NM -0.5 <5 201 NA <50 NA <5 NA 12400 <5 616 NA <10 NA NA <5 <0.1 277 NA P:\Duke Energy Progress. 1026\104. Lee Ash Basin GW Assessment\19.EG_CSASUP\tables\Table 4-4 Surficial Groundwater Exceedances Incorporating Provisional Background.xlsx Page 3 of 9 TABLE 4-4 SURFICIAL GROUNDWATER EXCEEDANCES INCORPORATING PROVISIONAL BACKGROUND H.F LEE ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, GOLDSBORO, NC Analytical Parameter PH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Barium Beryllium Boron Chromium (VI) Chromium Cobalt Iron Lead Manganese Nitrate (as N) 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 ug/L ug/L ug/L ug/L ug/L ug/L mg-N/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 4* 700 0.07^ 10 1* 300 15 50 10 20 NE NE 250 0.2* 500 0.3* Active Ash Basin 4.1-6.7 NE NE NE NE NE NE NE NE NE NE 718.8 0.44 NE 0.399 NE 44.79 31854 0.15 557 NE 1.351 24.83 124.5 199.5 NE 260.5 2.155 Sample ID Sample Collection Date Field Parameters Analytical Results CMW-7 10/05/2011 5.8 18.13 17 451 0.81 -111 94 1.75 NM <0.5 <5 183 NA 57.6 NA <5 NA 9580 <5 374 NA <10 NA NA <5 <0.1 256 NA CMW-7 DUP 10/05/2011 5.8 18.13 17 451 0.81 -111 94 1.75 NM <0.5 <5 183 NA 52.7 NA <5 NA 10600 <5 430 NA <10 NA NA <5 <0.1 254 NA CMW-7 03/14/2012 5.8 16.24 19 451 0.58 -76 129 0.9 NM <0.5 <5 205 NA 57.8 NA <5 NA 11500 <5 515 NA <10 NA NA <5 <0.1 317 NA CMW-7 06/13/2012 5.9 17.23 19 465 0.88 -52 153 1.44 NM <0.5 <5 177 NA 68.1 NA <5 NA 9960 <5 416 NA <10 NA NA <2 <0.1 265 NA CMW-7 10/17/2012 6.0 18.77 20 456 0.59 -2 203 0.98 NM <0.5 <5 205 NA 58.9 NA <5 NA 8970 <5 316 NA <10 NA NA <2 <0.1 272 NA CMW-7 03/07/2013 5.7 15.39 16 428 0.31 34 239 1.08 NM <1 1.3 202 NA <50 NA <5 NA 9750 <1 471 NA <1 NA NA 2 <0.2 250 NA CMW-7 06/05/2013 5.8 17.72 20 477 0.35 48 253 1.81 NM <1 1.24 190 NA <50 NA <5 NA 10200 <1 381 NA <1 NA NA 0.78 <0.2 290 NA CMW-7 DUP 06/05/2013 5.8 17.72 20 477 0.35 48 253 1.81 NM <1 1.32 188 NA <50 NA <5 NA 10300 <1 383 NA <1 NA NA 0.78 <0.2 280 NA CMW-7 10/10/2013 5.9 17.17 18 455 0.34 43 248 7.04 NM <1 1.05 197 NA <50 NA <5 NA 11700 <1 408 NA <1 NA NA 0.96 <0.2 280 NA CMW-7 03/11/2014 5.9 11.88 15 425 0.46 44 249 3.26 1 NM <1 <1 331 NA <50 NA <5 NA 14900 <1 479 NA <1 NA NA 2.3 <0.2 270 NA CMW-7 06/12/2014 5.8 1 15.49 19 464 0.28 29 234 9.1 NM <1 1.11 188 NA <50 NA <5 NA 16200 <1 529 NA <1 NA NA 2.2 <0.2 290 NA CMW-7 10/16/2014 5.6 15.56 19 429 0.2 70 275 3.26 NM <1 1.32 180 NA <50 NA <5 NA 10600 <1 394 NA <1 NA NA 1.7 <0.2 270 NA CMW-7 03/03/2015 6.0 11.66 13 376 0.2 1 206 10.6 NM <1 <1 354 NA <50 NA <5 NA 8270 <1 287 0.04 <1 NA NA 1.6 <0.2 210 NA CMW-7 06/09/2015 6.1 17.21 21 450 0.58 4 209 7.81 2.5 <1 <1 181 <1 <50 NA <5 12.7 12000 <1 452 0.03 <1 51.9 NA 2.3 <0.2 250 NA CMW-7 10/06/2015 5.9 16.75 18 355 0.4 -7 198 9.62 NM I <1 <1 258 <1 <50 NA <5 5.65 8690 <1 292 <0.023 <1 36.2 110 2.1 <0.2 200 0.392 CMW-7 12/04/2015 6.2 15.46 18 401 0.2 11 216 7.5 2 <1 <1 224 <1 <50 <0.03 <1 7.04 8790 <1 321 <0.01 <1 40.9 112 1.8 <0.2 220 0.524 CMW-7 01/12/2016 6.1 9.60 13 228 0.3 1 206 8 3 <1 <1 327 <1 <50 <0.03 <1 4.59 9250 <1 319 0.027 <1 40.7 119 1.4 <0.2 230 0.626 CMW-7 03/03/2016 6.3 11.52 16 369 0.26 70 275 8.5 3 <1 <1 342 <1 <50 NA <5 5.09 6500 <1 292 <0.023 <1 37 113 1.9 <0.2 210 0.351 CMW-7 06/07/2016 5.9 15.25 20 472 0.15 -18 187 7.26 NM <1 <1 196 <1 <50 NA <5 8.21 10000 <1 363 0.04 <1 56.3 124 1.2 <0.2 250 0.613 CMW-8 03/14/2012 5.2 19.48 19 166 3.22 -58 147 2.87 NM <0.5 <5 99.5 NA 754 NA <5 NA 126 <5 51.1 NA <10 NA NA 32.3 <0.1 127 NA CMW-8 DUP 03/14/2012 5.2 19.48 19 166 3.22 -58 147 2.87 NM <0.5 <5 98.5 NA 759 NA <5 NA 91.5 <5 50.6 NA <10 NA NA 32.3 <0.1 119 NA CMW-8 03/07/2013 5.4 16.32 15 253 0.59 131 336 7.75 NM <1 <1 113 NA 1170 NA <5 NA 898 <1 2340 1 NA <1 NA NA 44 <0.2 160 NA CMW-8 06/05/2013 4.4 20.08 19 103 5.56 108 313 3.74 NM <1 <1 40 NA 185 NA <5 NA 290 <1 142 NA <1 NA NA 19 <0.2 76 NA CMW-8 10/11/2013 5.1 19.94 18 105 3.83 302 507 6.74 NM <1 <1 40 NA 133 NA <5 NA 428 1 <1 117 NA <1 NA NA 16 <0.2 72 NA CMW-8 03/10/2014 5.2 11.35 17 157 2.16 194 399 9.24 NM <1 <1 62 NA 501 NA <5 NA 5990 <1 675 NA <1 NA NA 28 <0.2 100 NA CMW-8 06/11/2014 5.1 18.58 20 104 4.44 249 454 2 NM <1 <1 40 NA 127 NA <5 NA 95 <1 160 NA <1 NA NA 18 <0.2 82 NA CMW-8 10/17/2014 5.1 14.70 19 116 3.03 202 407 1.12 NM <1 <1 42 NA 255 NA <5 NA 301 <1 128 NA <1 NA NA 19 <0.2 71 NA CMW-8 03/03/2015 5.3 11.10 12 121 3.24 196 401 2.11 NM <1 <1 44 NA 319 NA <5 NA 375 <1 132 0.09 <1 NA NA 22 <0.2 83 NA CMW-8 06/09/2015 4.5 20.06 18 98 5.27 293 498 3.16 NM <1 <1 44 <1 106 NA <5 <1 127 <1 44 0.09 <1 9.55 NA 16 <0.2 74 NA CMW-8 DUP 06/09/2015 4.5 20.06 18 98 5.27 293 498 3.16 NM <1 <1 44 <1 105 NA <5 <1 103 <1 44 0.1 <1 9.47 NA 19 <0.2 72 NA CMW-8 10/06/2015 5.1 13.03 17 162 1.6 289 494 0.48 NM <1 <1 70 <1 682 NA <5 <1 <10 <1 116 0.06 <1 14 84 31 <0.2 110 <0.3 CMW-8 12/05/2015 5.5 15.04 15 337 0.88 139 344 2.02 0.5 <0.5 <0.5 73 <0.2 730 0.031 0.54 10.7 700 <0.1 730 0.079 <0.5 15.6 94 26 <0.1 <25 <1 CMW-8 01/11/2016 5.7 8.25 16 231 0.62 60 265 1 3.66 0.5 <1 <1 86 <1 932 <0.03 <1 11.6 9850 <1 1000 0.016 <1 17.2 120 37 <0.2 140 1.04 CMW-8 03/03/2016 5.9 10.82 15 110 2.95 19 224 1.9 0 <1 <1 46 <1 219 NA <5 2.63 553 <1 218 0.07 <1 10 54 23 <0.2 82 0.76 CMW-8 06/07/2016 5.1 17.15 18 87 4.99 248 453 7.45 NM <1 <1 38 <1 123 NA <5 1.03 914 <1 53 0.11 <1 8.36 40 20 <0.2 61 0.93 CMW-10 12/15/2010 6.7 13.24 12 458 NM NM NM 850 NM <0.5 12 329 NA 119 NA 50.3 NA 33600 10.9 565 NA <10 NA NA 50.7 <0.1 408 NA CMW-10 03/03/2011 6.2 12.11 12 846 3.3 172 377 8 NM <0.5 <5 120 NA 85 NA 9.8 NA 356 <5 70.9 NA <10 NA NA 74.5 <0.1 498 NA CMW-10 06/08/2011 5.4 13.99 21 432 0.79 -18 187 4.63 NM <0.5 <5 77.3 NA <50 NA <5 NA 481 <5 610 NA <10 NA NA 36.3 <0.1 303 NA CMW-10 10/05/2011 6.3 14.41 19 620 1.1 -40 165 6.81 NM <0.5 <5 89.1 NA 86.2 NA <5 NA 8570 <5 551 NA <10 NA NA 92.5 <0.1 392 NA CMW-10 03/14/2012 6.6 12.55 21 583 0.5 -43 162 20 NM <0.5 <5 98.3 NA 100 NA 20.2 NA 3020 <5 642 NA <10 NA NA 28.2 <0.1 342 NA CMW-10 06/13/2012 6.4 13.91 19 630 1.13 -48 157 8.34 NM <0.5 <5 95 NA 86.9 NA <5 NA 4980 <5 469 NA <10 NA NA 42.4 <0.1 353 NA CMW-10 10/17/2012 6.6 14.87 18 763 0.71 -71 134 42.3 NM <0.5 <5 152 NA 120 NA <5 NA 12900 <5 732 NA <10 NA NA 107 <0.1 434 NA CMW-10 03/07/2013 6.8 11.48 14 620 0.42 13 218 19.3 NM <1 <1 95 NA 94 NA <5 NA 1970 <1 492 NA <1 NA NA 55 <0.2 360 NA CMW-10 06/05/2013 6.6 14.22 18 699 0.67 32 237 37.1 NM <1 <1 118 NA 102 NA <5 NA 4490 <1 414 NA <1 NA NA 62 <0.2 400 NA CMW-10 10/11/2013 5.7 13.58 18 498 0.87 116 321 37.1 NM <1 <1 57 NA 56 NA <5 NA 5060 <1 212 NA <1 NA NA 85 <0.2 320 NA CMW-10 DUP 10/11/2013 5.7 13.58 18 498 0.87 116 321 37.1 NM <1 <1 62 NA 55 NA <5 NA 7580 <1 264 NA <1 NA NA 84 <0.2 330 NA CMW-10 03/10/2014 5.3 6.40 14 367 3.58 259 464 9.32 NM <1 <1 41 NA <50 NA <5 NA 2510 <1 75 NA <1 NA NA 89 <0.2 260 NA CMW-10 06/12/2014 5.1 11.99 18 235 2.49 287 492 8.7 NM <1 <1 32 NA <50 NA <5 NA 324 <1 31 NA <1 NA NA 56 <0.2 210 NA CMW-10 10/17/2014 1 5.1 10.33 20 279 1 0.39 240 445 9.69 NM <1 <1 50 NA <50 NA <5 NA 856 <1 74 NA <1 NA NA 61 <0.2 220 NA CMW-10 03/03/2015 1 5.3 6.06 10 244 1 3.8 311 516 30.4 NM <1 <1 37 NA <50 NA <5 NA 1500 <1 39 0.03 <1 NA NA 67 <0.2 210 NA P:\Duke Energy Progress. 1026\104. Lee Ash Basin GW Assessment\19.EG_CSASUP\tables\Table 4-4 Surficial Groundwater Exceedances Incorporating Provisional Background.xlsx Page 4 of 9 TABLE 4-4 SURFICIAL GROUNDWATER EXCEEDANCES INCORPORATING PROVISIONAL BACKGROUND H.F LEE ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, GOLDSBORO, NC Analytical Parameter PH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Barium Beryllium Boron Chromium (VI) Chromium Cobalt Iron Lead Manganese Nitrate (as N) 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 ug/L ug/L ug/L ug/L ug/L ug/L mg-N/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 4* 700 0.07^ 10 1* 300 15 50 10 20 NE NE 250 0.2* 500 0.3* Active Ash Basin 4.1-6.7 NE NE NE NE NE NE NE NE NE NE 718.8 0.44 NE 0.399 NE 44.79 31854 0.15 557 NE 1.351 24.83 124.5 199.5 NE 260.5 2.155 Sample ID Sample Collection Date Field Parameters Analytical Results CMW-10 06/08/2015 5.3 13.41 19 219 1.04 96 301 25.1 1 <1 <1 49 <1 <50 NA <5 5.07 3990 1.13 51 <0.023 <1 37.3 NA 55 <0.2 220 NA CMW-10 10/06/2015 6.1 11.37 18 473 0.4 11 216 5.53 NM <1 <1 90 <1 59 NA <5 7.48 6890 <1 238 <0.023 <1 53.7 132 57 <0.2 190 <0.3 CMW-10 12/04/2015 5.6 11.37 14 495 2.6 164 369 24.2 0 <1 <1 51 <1 <50 <0.03 3.07 4.48 2090 <1 68 <0.01 <1 38.6 41 57 <0.2 200 0.987 CMW-10 02/01/2016 5.5 8.37 18 257 5.3 205 410 33.1 0 <1 <1 57 <1 <50 0.033 <1 7.41 1300 1.2 59 0.055 <1 37.6 32 61 <0.2 270 1.76 CMW-10 03/02/2016 6.1 13.00 13 425 0.5 65 270 24.5 0.5 <1 <1 89 <1 <50 NA <5 5.09 2480 <1 210 <0.023 <1 56.1 100 59 <0.2 270 0.63 CMW-10 06/07/2016 6.4 11.69 19 536 0.45 -62 1 143 7.94 1 NM <1 <1 93 1 <1 67 1 NA 8 2.35 3420 <1 186 0.03 1 <1 56.6 128 56 <0.2 280 0.314 LLMW-01S 05/27/2015 7.1 4.78 21 258 0.49 -49 156 0.11 1 <1 <1 84 <1 66 NA <1 2.56 942 <1 1320 0.03 <1 26.4 250 0.21 0.261 120 <0.3 LLMW-01S 06/15/2015 6.6 4.56 20 259 0.59 223 428 2.11 1 <1 <1 77 <1 57 NA <1 2.25 923 <1 1420 <0.01 <1 27.4 252 0.17 <0.2 130 <0.3 LLMW-01S 12/07/2015 6.8 3.49 16 251 1.1 -18 187 0.89 0 <0.5 <0.5 70 <0.2 72 <0.03 <0.5 1.9 680 <0.1 1300 0.26 <0.5 28.4 250 <1 <0.1 126 <1 LLMW-01S 01/12/2016 6.8 2.75 16 250 0.22 -12 193 0.81 0.5 <1 <1 72 <1 59 <0.03 <1 2.08 736 <1 1350 <0.01 <1 28.1 252 0.19 <0.2 140 <0.3 LLMW-02S 05/27/2015 7.1 1 7.40 27 437 0.95 -112 93 47.3 0.5 <1 46.1 1910 <1 124 NA <1 15.6 8270 <1 10500 0.022 <1 26.2 705 1.7 <0.2 230 0.413 LLMW-02S 06/15/2015 6.5 8.26 24 457 0.67 1 -76 129 2.72 5 <1 64.6 1920 <1 135 NA <1 13.8 7850 <1 10800 <0.01 <1 27 703 2 <0.2 250 <0.3 MW-1 07/12/2007 NM NM NM NM NM NM NM NM NM <0.21 11 365 4.1 221 NA 11.9 NA 11800 31.5 81 0.155 3 NA NA 22.5 0.27 993.0001 NA MW-1 12/21/2007 NM NM NM NM NM NM NM NM NM <0.3 440 215 0.13 979 NA 1.2 NA 9140 0.68 273 <0.05 0.58 NA NA 39.6 0.056 226 NA MW-1 04/29/2008 NM NM NM NM NM NM NM NM NM 3.2 123 144 0.11 508 NA 17.4 NA 5390 0.86 169 <0.05 1.4 NA NA 30.7 0.07 167 NA MW-1 11/17/2008 NM NM NM NM NM NM NM NM NM 0.42 44 195 0.066 856 NA 0.73 NA 3630 0.18 206 <0.25 1.5 NA NA 69 0.07 241 NA MW-1 06/02/2009 NM NM NM NM NM NM NM NM NM <2 48.7 144 <1 301 NA 4.8 NA 4870 1.6 156 2.7 <5 NA NA 29 <1 200 NA MW-1 10/20/2009 NM NM NM NM NM NM NM NM NM <2 17.5 158 <1 1210 NA 2.6 NA 1430 <1 173 <0.05 <5 NA NA 56 <1 266 NA MW-1 04/27/2010 NM NM NM NM NM NM NM NM NM 39 54 140 <4 230 NA <5 NA 6000 <10 160 1.8 <10 NA NA 40 <50 130 NA MW-1 09/27/2013 6.3 NM 22 484 0.27 47 NM 35.4 NM <0.34 243 246 NA 1410 NA 1.7 j NA 4990 0.91 j 330 <0.25 0.87 j 25 NA 7.7 <0.15 289 NA MW-1 12/05/2015 6.0 5.34 15 240 0.3 51 256 9.68 0 <0.5 11.8 130 <0.2 260 <0.03 <0.5 2 780 0.34 130 2.5 <0.5 13.5 480 14.8 <0.1 67 9.2 MW-1 01/11/2016 6.1 5.60 14 201 0.61 100 305 5.96 NM <1 6.61 121 <1 216 0.05 <1 1.13 334 <1 83 1.8 <1 12.7 374 18 <0.2 120 6.08 MW-1 03/02/2016 6.1 5.61 14 194 1.07 52 257 9.5 NM <1 11.4 109 <1 148 0.039 <1 1.63 714 <1 73 2.1 <1 11.4 291 18 <0.2 120 10.3 MW-1 06/07/2016 5.8 5.81 22 186 0.2 157 362 8.52 0 <1 4.48 114 <1 107 <0.03 <1 2.55 248 <1 81 2.2 <1 10.6 219 19 <0.2 120 5.33 MW-1 08/04/2016 5.6 5.73 24 167 0.24 225 430 9.56 0 <1 4.7 96 <1 89 0.036 1.04 1.43 294 <1 56 1.9 <1 10.3 150 16 <0.2 110 6.1 MW-2 07/12/2007 NM NM NM NM NM NM NM NM NM <0.21 2.8 102 0.69 497 NA 3.1 NA 8930 4.7 731 0.05 1.4 NA NA 26.4 0.031 158 NA MW-2 12/21/2007 NM NM NM NM NM NM NM NM NM <0.3 1.2 141 0.062 756 NA 0.089 NA 11500 0.091 1760 0.76 0.43 NA NA 51.9 0.008 174 NA MW-2 04/29/2008 NM NM NM NM NM NM NM NM NM 1.4 <0.33 105 <0.086 575 1 NA 9.7 NA 5180 0.22 1520 0.905 0.98 NA NA 50.8 <0.068 200 NA MW-2 11/17/2008 NM NM NM NM NM NM NM NM NM 0.093 0.96 155 <0.051 785 NA 0.35 NA 8810 0.032 1910 <0.25 2 NA NA 63 <0.011 220 NA MW-2 06/02/2009 NM NM NM NM NM NM NM NM NM <2 <1 82.9 <1 536 NA 2.1 NA 4830 <1 801 0.46 <5 NA NA 34 <1 197 NA MW-2 10/20/2009 NM NM NM NM NM NM NM NM NM <2 <1 95.5 <1 678 NA 2.3 NA 4090 <1 1370 0.51 <5 NA NA 51 <1 174 NA MW-2 04/27/2010 NM NM NM NM NM NM NM NM NM 37 <10 62 <4 320 NA <5 NA 1500 <10 330 0.3 <10 NA NA 29 <50 100 NA MW-2 09/26/2013 5.8 NM 19 214 0.31 129 NM 14.9 NM <0.34 <0.42 96.1 NA 575 NA <1.6 NA 1650 <0.085 952 12 <0.5 23.7 NA 38.1 <0.15 154 NA MW-3 07/12/2007 NM NM NM NM NM NM NM NM NM <0.21 84.8 299 5.7 1700 NA 9.2 NA 19000 43 1280 0.05 3.8 NA NA 75.2 0.16 624 NA MW-3 12/21/2007 NM NM NM NM NM NM NM NM NM <0.3 98.6 92.8 <0.051 1440 NA <0.059 NA 4620 0.058 1150 2.02 0.75 NA NA 59.8 0.03 420 NA MW-3 04/29/2008 NM NM NM NM NM NM NM NM NM 1 197 138 <0.086 1660 NA 7.9 NA 7960 <0.05 1430 <0.05 0.98 NA NA 109 <0.068 561 NA MW-3 11/17/2008 NM NM NM NM NM NM NM NM NM 0.049 46.2 84.2 <0.051 1370 NA 0.11 NA 3140 0.067 835 <0.25 2.7 NA NA 90.00001 0.013 423 NA MW-3 06/02/2009 NM NM NM NM NM NM NM NM NM <2 301 126 <1 1730 NA <2 NA 8580 <1 1510 <0.05 <5 NA NA 71 <1 535 NA MW-3 10/20/2009 NM NM NM NM NM NM NM NM NM <2 357 184 <1 1570 NA 2.2 NA 9960 <1 1650 <0.05 <5 NA NA 69 <1 455 NA MW-3 04/27/2010 NM NM NM NM NM NM NM NM NM 42 350 200 <4 1700 NA <5 NA 11000 <10 1600 0.069 <10 NA NA 72 <50 410 NA MW-3 09/30/2013 6.8 NM 21 581 0.6 -92 NM 6.2 NM <0.34 442 202 NA 1560 NA <1.6 NA 16300 <0.085 1510 <0.25 <0.5 31.8 NA 18.9 <0.15 396 NA MW-3 06/11/2015 6.9 1 13.72 20 956 0.22 -155 50 15.1 3 <1 445 355 <1 2240 NA <1 5.61 28200 <1 2000 <0.01 <1 32.8 4160 58 <0.2 510 0.305 MW-3 12/04/2015 7.0 13.21 17 1841 0.2 -147 58 21.7 0 <1 683 535 <1 2150 <0.03 <1 6.24 34400 <1 1940 0.056 <1 33 4460 46 <0.2 550 <0.3 MW-3 01/11/2016 7.4 9.62 16 1804 0.59 140 345 4.26 NM <1 614 576 <1 2360 <0.03 <1 8.06 38100 <1 2260 0.018 <1 33.8 4720 50 <0.2 570 <0.3 MW-4 07/12/2007 NM NM NM NM NM NM NM NM NM <0.21 1.7 929 8.1 66.8 NA 19.1 NA 22100 47.2 1010 0.05 3.5 NA NA 3.86 0.27 391 NA MW-4 12/21/2007 NM NM NM NM NM NM NM NM NM <0.3 0.47 271 <0.051 103 NA <0.59 NA 4710 0.1 187 <0.05 <0.3 NA NA 9.67 <0.007 251 NA MW-4 04/29/2008 NM NM NM NM NM NM NM NM NM 0.79 <0.33 255 0.12 112 NA 9.2 NA 10600 0.11 215 <0.05 <0.63 NA NA 44.3 <0.068 361 NA MW-4 11/17/2008 NM NM NM NM NM NM NM NM NM <0.017 0.34 251 0.094 104 NA 0.42 NA 5000 0.32 129 <0.25 0.98 NA NA 21 <0.011 288 NA MW-4 06/02/2009 NM NM NM NM NM NM NM NM NM <2 1.2 191 <1 <200 NA 4.9 NA 8460 3.4 704 <0.05 <5 NA NA 71 <1 495 NA MW-4 10/20/2009 NM NM NM NM NM NM NM NM NM <2 <1 243 <1 <200 NA 2.2 NA 1 4940 1.1 195 <0.05 <5 NA NA 20 <1 311 NA P:\Duke Energy Progress. 1026\104. Lee Ash Basin GW Assessment\19.EG_CSASUP\tables\Table 4-4 Surficial Groundwater Exceedances Incorporating Provisional Background.xlsx Page 5 of 9 TABLE 4-4 SURFICIAL GROUNDWATER EXCEEDANCES INCORPORATING PROVISIONAL BACKGROUND H.F LEE ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, GOLDSBORO, NC Analytical Parameter PH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Barium Beryllium Boron Chromium (VI) Chromium Cobalt Iron Lead Manganese Nitrate (as N) 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 ug/L ug/L ug/L ug/L ug/L ug/L mg-N/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 4* 700 0.07^ 10 1* 300 15 50 10 20 NE NE 250 0.2* 500 0.3* Active Ash Basin 4.1-6.7 NE NE NE NE NE NE NE NE NE NE 718.8 0.44 NE 0.399 NE 44.79 31854 0.15 557 NE 1.351 24.83 124.5 199.5 NE 260.5 2.155 Sample ID Sample Collection Date Field Parameters Analytical Results MW-4 04/27/2010 NM NM NM NM NM NM NM NM NM 21 <10 190 <4 80 NA <5 NA 10000 <10 500 0.066 <10 NA NA 61 <50 380 NA MW-4 09/27/2013 6.2 NM 18 0 0.64 35 NM 364 NM <0.34 1.4 j 201 NA 91.8 NA 14.2 j NA 8880 5.3 256 <0.25 <0.5 50.5 NA 14.3 <0.15 275 NA Inactive Ash Basin BW-1 10/06/2011 5.5 6.79 18 320 3.6 -58 147 0.8 NM <0.5 <5 86.6 NA 543 NA <5 NA 745 <5 1130 NA <10 NA NA 84.1 <0.1 201 NA BW-1 03/15/2012 5.2 5.44 15 266 0.44 -74 131 26.8 NM <0.5 <5 27.8 NA 321 NA <5 NA 3310 <5 888 NA <10 NA NA 81.4 <0.1 192 NA BW-1 06/14/2012 5.8 6.93 19 327 1.27 -57 148 8.83 NM <0.5 <5 27.4 NA 508 NA <5 NA 10900 <5 776 NA <10 NA NA 101 <0.1 174 NA BW-1 10/18/2012 5.9 7.43 19 362 0.8 -9 196 24.7 NM <0.5 <5 34 NA 246 NA <5 NA 26700 <5 1110 NA <10 NA NA 113 <0.1 237 NA BW-1 03/06/2013 5.4 5.58 11 309 0.45 96 301 30 NM <1 <1 28 NA 291 NA <5 NA 7400 <1 785 NA 5.48 NA NA 99 <0.2 190 NA BW-1 06/05/2013 5.9 7.07 18 345 0.36 NM NM 8.4 NM <1 <1 26 NA 426 NA <5 NA 10600 <1 887 NA 3.81 NA NA 83 <0.2 200 NA BW-1 10/10/2013 6.1 6.90 18 402 0.51 3 208 9.77 NM <1 <1 37 NA 328 NA <5 NA 22200 <1 1370 NA <1 NA NA 110 <0.2 260 NA BW-1 03/11/2014 5.5 4.90 13 295 0.43 150 355 27.2 NM <1 <1 28 NA 330 NA <5 NA 2210 <1 688 NA 14.8 NA NA 100 <0.2 190 NA BW-1 06/12/2014 5.9 6.68 20 538 0.36 47 252 21 NM <1 <1 49 NA 588 NA <5 NA 13400 <1 1460 NA 42.1 NA NA 180 <0.2 410 NA BW-1 10/15/2014 5.3 6.71 18 540 0.3 1 206 10 NM <1 <1 53 NA 541 NA <5 NA 33100 <1 1170 NA 16.5 NA NA 190 <0.2 410 NA BW-1 03/02/2015 5.9 4.59 14 633 0.2 66 271 45.2 NM <1 <1 48 NA 709 NA <5 NA 13500 <1 824 NA 3.53 NA NA 190 <0.2 400 NA BW-1 06/08/2015 5.9 1 6.63 19 1 712 0.31 2 207 1 25.1 5 <1 <1 55 <1 862 NA <5 2.35 18500 <1 599 <0.023 2.11 17.2 NA 180 <0.2 480 NA BW-1 10/05/2015 6.1 6.90 19 599 4.7 56 261 9.98 NM <1 <1 40 <1 751 NA <5 <1 3930 <1 182 0.06 8.04 16.8 1710 200 <0.2 400 <0.3 BW-1 DUP 10/05/2015 6.1 6.90 19 599 4.7 56 261 9.98 NM <1 <1 40 <1 754 NA <5 <1 4060 <1 185 0.05 7.79 17 1710 200 <0.2 420 <0.3 BW-1 12/06/2015 6.2 6.01 16 604 1 -3 202 9.8 3.5 <0.5 <0.5 40 <0.2 740 <0.03 <0.5 3.4 5100 <0.1 570 0.044 5.9 19.1 1700 179 <0.1 410 <1 BW-1 01/12/2016 6.1 5.34 15 510 0.71 36 241 7.97 1 <1 <1 38 <1 681 <0.03 2.82 1.1 4150 <1 382 0.054 2.02 13.1 1450 150 <0.2 330 <0.3 BW-1 03/02/2016 6.1 4.70 13 373 1.5 79 284 8.7 NM <1 <1 25 <1 518 NA <5 <1 1080 <1 181 0.25 3.66 9.3 993 87 <0.2 240 <0.3 BW-1 DUP 03/02/2016 6.1 4.70 13 373 1.5 79 284 8.7 NM <1 <1 25 <1 517 NA <5 <1 1220 <1 199 0.25 3.74 9.27 982 89 <0.2 240 <0.3 BW-1 06/06/2016 6.1 5.64 19 535 0.24 -21 184 9.9 NM <1 <1 44 <1 861 NA <5 3.87 7550 <1 540 0.03 3.46 12.5 1490 100 <0.2 310 <0.3 BW-1 DUP 06/06/2016 6.1 5.64 19 535 0.24 -21 184 9.9 NM <1 <1 44 <1 851 NA <5 3.74 7770 <1 542 0.03 3.97 12.4 1470 100 <0.2 300 <0.3 CW-1 03/15/2012 6.2 13.00 19 228 3.4 -77 128 15.9 NM <0.5 <5 27.6 NA <50 NA <5 NA 3260 <5 494 NA <10 NA NA <5 <0.1 1900 NA CW-1 06/14/2012 6.1 13.61 17 259 0.64 -41 164 8.7 NM 1 <0.5 <5 27.4 NA <50 NA <5 NA 8540 <5 478 NA <10 NA NA 5.5 <0.1 144 NA CW-1 10/18/2012 6.3 14.96 20 217 0.9 1 1 206 24.2 NM <0.5 <5 30.4 NA <50 NA <5 NA 6020 <5 341 NA <10 NA NA 4.5 <0.1 126 NA CW-1 03/06/2013 6.2 11.86 13 256 0.89 80 285 40.4 NM <1 <1 28 NA <50 NA <5 NA 1 3180 <1 335 NA <1 NA NA 5.6 <0.2 150 NA CW-1 06/06/2013 6.1 1 13.70 19 298 0.37 NM NM 48.3 NM <1 <1 31 NA <50 NA <5 NA 4140 <1 458 NA <1 NA NA 5.8 <0.2 170 NA CW-1 10/10/2013 6.2 13.85 18 385 0.39 53 258 1000 NM <1 1.95 154 NA <50 NA 30 NA 30000 16.8 496 NA 2.18 NA NA 20 <0.2 450 NA CW-1 03/11/2014 6.3 6.60 18 599 0.54 121 326 25 NM <1 <1 69 NA <50 NA <5 NA 3350 <1 339 NA <1 NA NA 28 <0.2 330 NA CW-1 06/12/2014 6.2 11.90 19 766 0.22 45 250 9.7 NM <1 <1 92 NA <50 NA <5 NA 3600 <1 399 NA <1 NA NA 34 <0.2 460 NA CW-1 10/15/2014 5.5 11.85 18 502 1.5 1 81 286 891 NM <1 2.7 148 NA <50 NA 27 NA 27300 19.8 230 NA <1 NA NA 31 <0.2 420 NA CW-1 03/02/2015 6.2 5.85 14 738 0.91 135 340 40.2 NM <1 <1 83 NA <50 NA <5 NA 1680 1 <1 207 NA <1 NA NA 32 <0.2 410 NA CW-1 06/08/2015 6.6 12.26 20 819 0.35 -6 199 68.4 1 <1 2.05 192 1.34 <50 NA 17 8.56 20900 11.1 481 0.22 <1 96.2 NA 29 <0.2 700 NA CW-1 10/05/2015 6.3 13.81 18 438 0.6 -50 155 9.96 NM <1 <1 54 <1 <50 NA <5 2.79 8230 <1 409 0.04 <1 46.6 102 14 0.349 240 0.652 CW-1 12/06/2015 6.3 11.74 16 412 0.3 -37 168 6.36 3 <0.5 <0.5 46 <0.2 <50 <0.03 <0.5 1.9 6500 0.16 350 <0.02 <0.5 41.9 97 10.7 <0.1 229 <1 CW-1 01/13/2016 6.2 5.54 11 411 0.22 76 281 53.3 1 <1 <1 51 <1 <50 <0.03 <1 2.39 8460 <1 430 0.148 <1 42.5 106 8.3 <0.2 230 0.311 CW-1 03/03/2016 6.2 5.20 15 262 0.84 1 101 206 23.3 2.5 <1 <1 50 <1 <50 NA <5 2.61 3930 <1 308 <0.023 <1 22.5 75 4.5 <0.2 160 1.43 CW-1 06/06/2016 6.2 11.15 22 400 0.2 -13 192 9.9 NM <1 <1 55 <1 <50 NA <5 6.26 6800 1 <1 433 <0.023 <1 43.2 95 11 <0.2 220 0.692 CW-2 10/06/2011 5.8 15.35 19 172 2.34 23 228 6 NM <0.5 <5 33.9 NA <50 NA <5 NA 3250 <5 172 NA <10 NA NA <5 <0.1 105 NA CW-2 03/15/2012 6.0 14.18 19 195 1.5 -82 123 15.3 NM <0.5 <5 27.1 NA <50 NA <5 NA 10000 <5 187 NA <10 NA NA <5 <0.1 160 NA CW-2 06/14/2012 6.1 14.61 17 222 0.7 -45 160 16 NM <0.5 <5 26.3 NA <50 NA <5 NA 16700 <5 197 NA <10 NA NA 3.3 <0.1 141 NA CW-2 10/18/2012 6.2 15.40 20 229 0.8 -48 157 7.56 NM 1 <0.5 <5 20.8 NA <50 NA <5 NA 17500 <5 205 NA <10 NA NA 3.9 <0.1 134 NA CW-2 03/06/2013 6.0 12.68 14 202 0.58 1 10 215 28.4 NM <1 <1 28 NA <50 NA <5 NA 11000 <1 199 NA <1 NA NA 2.4 <0.2 120 NA CW-2 06/06/2013 6.1 14.70 18 225 0.17 NM NM 30.9 NM <1 <1 26 NA <50 NA <5 NA 12700 1 <1 294 NA <1 NA NA 1.9 <0.2 130 NA CW-2 10/10/2013 6.3 14.65 17 222 0.2 -37 168 19.5 NM <1 <1 30 NA <50 NA <5 NA 15900 <1 257 NA <1 NA NA 4.2 <0.2 140 NA CW-2 DUP 10/10/2013 6.3 14.65 17 222 0.2 -37 168 19.5 NM <1 <1 30 NA <50 NA <5 NA 15100 <1 246 NA <1 NA NA 4.2 <0.2 140 NA CW-2 03/11/2014 6.1 7.59 19 232 0.14 34 239 45.9 NM <1 <1 29 NA <50 NA <5 NA 11900 <1 319 NA <1 NA NA 4.2 <0.2 140 NA CW-2 06/12/2014 6.0 13.13 18 330 0.42 26 231 9.2 NM <1 <1 26 NA <50 NA <5 NA 8610 <1 445 NA <1 NA NA 8.9 <0.2 200 NA CW-2 10/15/2014 5.6 13.16 18 258 0.26 -30 175 21.2 NM <1 <1 23 NA <50 NA <5 NA 19200 <1 265 NA <1 NA NA 4.2 <0.2 150 NA P:\Duke Energy Progress. 1026\104. Lee Ash Basin GW Assessment\19.EG_CSASUP\tables\Table 4-4 Surficial Groundwater Exceedances Incorporating Provisional Background.xlsx Page 6 of 9 TABLE 4-4 SURFICIAL GROUNDWATER EXCEEDANCES INCORPORATING PROVISIONAL BACKGROUND H.F LEE ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, GOLDSBORO, NC Analytical Parameter PH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Barium Beryllium Boron Chromium (VI) Chromium Cobalt Iron Lead Manganese Nitrate (as N) 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 ug/L ug/L ug/L ug/L ug/L ug/L mg-N/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 4* 700 0.07^ 10 1* 300 15 50 10 20 NE NE 250 0.2* 500 0.3* Active Ash Basin 4.1-6.7 NE NE NE NE NE NE NE NE NE NE 718.8 0.44 NE 0.399 NE 44.79 31854 0.15 557 NE 1.351 24.83 124.5 199.5 NE 260.5 2.155 Sample ID Sample Collection Date Field Parameters Analytical Results CW-2 03/02/2015 6.2 6.55 15 243 0.15 15 220 34.6 NM <1 <1 23 NA <50 NA <5 NA 12300 <1 300 NA <1 NA NA 4 <0.2 140 NA CW-2 06/08/2015 6.9 13.38 19 313 0.32 -40 165 27.6 4.5 <1 <1 23 <1 <50 NA <5 7.85 14800 <1 298 <0.023 <1 40.8 NA 6.1 <0.2 170 NA CW-2 DUP 06/08/2015 6.9 13.38 19 313 0.32 -40 165 27.6 4.5 <1 <1 23 <1 <50 NA <5 7.66 15000 <1 285 <0.023 <1 38.1 NA 5.6 <0.2 160 NA CW-2 10/05/2015 6.1 12.65 17 213 1.3 16 221 181 NM <10 <10 64 <10 <50 NA 14 <10 24300 <10 247 <0.023 <10 29 47 4.6 <2 380 18.5 CW-2 12/06/2015 6.2 11.70 17 218 0.4 -35 170 9.21 3.5 <0.5 <0.5 26 <0.2 <50 <0.03 <0.5 6 16100 <0.1 190 <0.02 <0.5 25.2 34 3.5 <0.1 144 <1 CW-2 01/13/2016 6.2 6.13 16 196 0.95 12 217 9.42 2 <1 <1 28 <1 <50 I <0.03 10.9 7.26 16300 <1 198 0.068 1 <1 20.9 32 2.8 <0.2 110 <0.3 CW-2 03/03/2016 6.2 6.53 15 203 0.93 -8 197 11 7 <1 <1 28 <1 <50 NA <5 8.29 12400 1 <1 205 <0.023 <1 23.9 34 3.4 <0.2 140 <0.3 CW-2 06/07/2016 6.2 11.75 19 284 0.4 37 242 20.3 NM <1 <1 31 <1 <50 NA <5 12.4 15000 <1 351 <0.023 <1 29.5 38 4.2 <0.2 140 <0.3 CW-3 10/06/2011 5.9 12.10 19 448 0.55 31 236 2.78 NM 1 <0.5 <5 84.9 NA 792 NA <5 NA 5560 <5 1890 NA <10 NA NA 57.9 <0.1 284 NA CW-3 DUP 10/06/2011 5.9 12.10 19 448 0.55 31 236 2.78 NM <0.5 <5 84.9 NA 798 NA <5 NA 5400 <5 1850 NA <10 NA NA 57.4 <0.1 274 NA CW-3 03/15/2012 6.1 1 10.85 20 578 2.3 -75 130 12 NM <0.5 <5 65.5 NA 947 NA <5 NA 8030 <5 1900 NA <10 NA NA 74.1 <0.1 360 NA CW-3 06/14/2012 6.0 11.09 18 497 0.69 -71 134 9.32 NM <0.5 <5 52.6 NA 672 NA <5 NA 9380 <5 1890 NA <10 NA NA 59.7 <0.1 305 NA CW-3 DUP 06/14/2012 6.0 11.09 18 497 0.69 -71 134 9.32 NM <0.5 <5 51.4 NA 649 NA <5 NA 9660 <5 1850 NA <10 NA NA 64.6 <0.1 302 NA CW-3 10/18/2012 6.1 12.10 20 550 0.48 8 213 18.5 NM <0.5 <5 55.1 NA 785 NA <5 NA 12000 <5 2070 NA <10 NA NA 71.4 <0.1 317 NA CW-3 03/06/2013 5.8 9.63 13 373 0.38 32 237 16.7 NM I <1 <1 42 NA 414 NA <5 NA 28600 <1 3080 NA <1 NA NA 49 <0.2 210 NA CW-3 DUP 03/06/2013 5.8 9.63 13 373 0.38 32 237 16.7 NM <1 <1 42 NA 410 NA <5 NA 28900 <1 3100 NA <1 NA NA 49 <0.2 210 NA CW-3 06/06/2013 6.0 11.05 18 518 0.29 NM NM 24.3 NM <1 <1 57 NA 778 NA <5 NA 5160 <1 1780 NA 1.23 NA NA 58 <0.2 300 NA CW-3 10/10/2013 5.9 10.74 18 310 0.35 220 425 111 NM <1 <1 50 NA 463 NA <5 NA 5370 1.32 224 NA 1.17 NA NA 38 <0.2 220 NA CW-3 03/11/2014 5.9 3.99 16 430 0.29 128 333 8.53 NM <1 <1 55 NA 561 NA <5 NA 1710 <1 580 NA <1 NA NA 51 <0.2 260 NA CW-3 DUP 03/11/2014 5.9 3.99 16 430 0.29 128 333 8.53 NM <1 <1 56 NA 564 NA <5 NA 1840 <1 590 NA <1 NA NA 50 <0.2 260 NA CW-3 06/12/2014 5.9 8.94 19 259 1.99 196 401 35 NM <1 <1 35 NA 323 NA <5 NA 1630 <1 266 NA <1 NA NA 27 <0.2 160 NA CW-3 10/15/2014 5.4 9.81 18 280 0.32 125 330 211 NM <1 <1 55 NA 349 NA <5 NA 13400 2.44 609 NA <1 NA NA 28 <0.2 250 NA CW-3 03/02/2015 6.0 3.39 13 303 0.25 175 380 18.3 NM <1 <1 36 NA 268 NA <5 NA 612 <1 407 NA <1 NA NA 25 <0.2 160 NA CW-3 06/09/2015 5.7 9.50 19 313 0.44 115 320 83.3 1.5 <1 <1 42 1 <1 346 NA <5 2.3 1890 1 <1 404 0.14 <1 15.3 1 NA 28 <0.2 180 NA CW-3 10/05/2015 6.0 9.41 18 311 1.69 202 407 1100 NM <10 <10 106 <10 385 NA 25 <10 27400 13.9 786 <0.023 <10 19.8 590 37 <2 710 19.7 CW-3 12/05/2015 6.0 8.61 16 329 0.4 103 308 46.1 1 <0.5 <0.5 44 <0.2 420 <0.03 0.64 11.5 4300 0.4 1100 <0.02 <0.5 14.9 540 34.5 <0.1 228 <1 CW-3 02/01/2016 6.0 5.71 18 369 0.24 76 281 9.35 1 <1 <1 52 <1 391 <0.03 <1 7.5 1220 <1 1110 <0.01 <1 17.6 501 43 <0.2 220 0.314 CW-3 03/03/2016 6.0 2.68 14 385 0.75 149 354 9.5 0.5 <1 <1 50 <1 588 NA <5 <1 561 <1 77 0.17 8.48 12.4 870 57 <0.2 260 0.811 CW-3 06/06/2016 6.0 8.53 18 341 1.5 111 316 8.1 NM <1 <1 42 <1 484 NA <5 <1 464 <1 49 0.46 12.4 11.2 747 48 <0.2 200 0.422 CW-4 10/06/2011 6.3 18.51 18 322 3.34 3 208 6.19 NM <0.5 <5 85.6 NA 51.9 NA <5 NA 6510 1 <5 1230 NA <10 NA NA 15.6 <0.1 193 NA CW-4 03/15/2012 6.2 16.80 19 308 0.3 -68 137 31.5 NM <0.5 <5 77.9 NA <50 NA <5 NA 9030 <5 1130 NA <10 NA NA 13.3 <0.1 204 NA CW-4 DUP 03/15/2012 6.2 16.80 19 308 0.3 -68 137 31.5 NM <0.5 <5 79.9 NA <50 NA <5 NA 9810 <5 1140 NA <10 NA NA 13.6 <0.1 181 NA CW-4 06/14/2012 6.2 17.24 18 315 0.56 -50 156 30.8 NM <0.5 <5 82.6 NA <50 NA <5 NA 9840 <5 1130 NA <10 NA NA 13.5 <0.1 184 NA CW-4 10/18/2012 6.4 18.84 19 318 0.66 -44 161 7.21 NM <0.5 <5 81.8 NA <50 NA <5 NA 13200 <5 1260 NA <10 NA NA 16.8 <0.1 192 NA CW-4 DUP 10/18/2012 6.4 18.84 19 318 0.66 -44 161 7.21 NM <0.5 <5 82.6 NA <50 NA <5 NA 13500 <5 1270 NA <10 NA NA 17.5 <0.1 191 NA CW-4 03/06/2013 6.2 14.88 14 317 0.23 11 216 47.2 NM <1 <1 89 NA <50 NA <5 NA 12900 <1 1150 NA <1 NA NA 13 <0.2 180 NA CW-4 06/06/2013 6.0 16.62 18 281 0.29 NM NM 27 NM <1 <1 81 NA <50 NA <5 NA 7140 1 <1 880 NA <1 NA NA 22 <0.2 170 NA CW-4 DUP 06/06/2013 6.0 16.62 18 281 0.29 NM NM 27 NM <1 <1 79 NA <50 NA <5 NA 6870 <1 846 NA <1 NA NA 22 <0.2 170 NA CW-4 10/10/2013 6.2 16.31 17 328 0.23 -6 199 24.8 NM <1 <1 89 NA <50 NA <5 NA 10600 <1 1400 NA <1 NA NA 17 <0.2 200 NA CW-4 03/11/2014 5.4 7.85 17 293 1.8 153 358 16.9 NM <1 <1 100 NA <50 NA <5 NA 2380 <1 705 NA <1 NA NA 30 <0.2 200 NA CW-4 06/12/2014 5.3 14.05 19 248 1.77 284 489 9 NM <1 <1 83 NA <50 NA <5 NA 1810 <1 333 NA <1 NA NA 32 <0.2 180 NA CW-4 DUP 06/12/2014 5.3 14.05 19 248 1.77 284 489 9 NM <1 <1 82 NA <50 NA <5 NA 1520 <1 323 NA <1 NA NA 32 <0.2 180 NA CW-4 10/16/2014 5.3 13.14 19 252 0.23 118 323 12.6 NM <1 <1 82 NA <50 NA <5 NA 2060 <1 583 NA <1 NA NA 26 <0.2 160 NA CW-4 DUP 10/16/2014 5.3 13.14 19 252 0.23 118 323 12.6 NM <1 <1 85 NA <50 NA <5 NA 2110 <1 616 NA <1 NA NA 27 <0.2 150 NA CW-4 03/03/2015 5.3 7.65 11 199 1.73 247 452 15.5 NM <1 <1 69 NA <50 NA <5 NA 901 <1 472 NA <1 NA NA 29 <0.2 130 NA CW-4 DUP 03/03/2015 5.3 7.65 11 199 1.73 247 452 15.5 NM I <1 <1 71 NA <50 NA <5 NA 909 <1 481 NA <1 NA NA 27 <0.2 130 NA CW-4 06/08/2015 5.2 14.13 1 18 179 0.25 133 338 9.22 1.5 <1 <1 66 <1 <50 NA <5 7.02 2760 <1 531 <0.023 <1 18.7 NA 26 <0.2 120 NA CW-4 10/05/2015 6.3 16.32 17 346 0.6 -10 195 5.49 NM <1 <1 112 <1 <50 NA <5 15.2 10900 <1 1750 <0.023 <1 12.9 114 19 <0.2 210 <0.3 CW-4 12/05/2015 6.2 14.00 16 309 0.3 48 253 9.49 2.5 <0.5 <0.5 100 <0.2 <50 <0.03 <0.5 14.6 7800 <0.1 1300 <0.02 <0.5 15 97 15.1 <0.1 205 <1 CW-4 01/13/2016 5.9 6.75 14 163 3.99 -56 8 20.9 1 <1 <1 81 <1 <50 <0.03 <1 7.66 2840 <1 739 0.05 <1 16.4 80 25 <0.2 150 <0.3 P:\Duke Energy Progress. 1026\104. Lee Ash Basin GW Assessment\19.EG_CSASUP\tables\Table 4-4 Surficial Groundwater Exceedances Incorporating Provisional Background.xlsx Page 7 of 9 TABLE 4-4 SURFICIAL GROUNDWATER EXCEEDANCES INCORPORATING PROVISIONAL BACKGROUND H.F LEE ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, GOLDSBORO, NC Analytical Parameter PH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Barium Beryllium Boron Chromium (VI) Chromium Cobalt Iron Lead Manganese Nitrate (as N) 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 ug/L ug/L ug/L ug/L ug/L ug/L mg-N/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 4* 700 0.07^ 10 1* 300 15 50 10 20 NE NE 250 0.2* 500 0.3* Active Ash Basin 4.1-6.7 NE NE NE NE NE NE NE NE NE NE 718.8 0.44 NE 0.399 NE 44.79 31854 0.15 557 NE 1.351 24.83 124.5 199.5 NE 260.5 2.155 Sample ID Sample Collection Date Field Parameters Analytical Results CW-4 DUP O1/13/2016 5.9 6.75 14 163 3.99 -56 8 20.9 1 <1 <1 82 <1 <50 <0.03 <1 7.75 3080 <1 758 0.056 <1 16.2 80 25 <0.2 160 <0.3 CW-4 03/02/2016 5.4 7.78 16 151 3.16 193 398 9.7 NM <1 <1 56 <1 <50 NA <5 1.94 880 <1 178 0.05 <1 17.7 47 28 <0.2 120 0.303 CW-4 06/07/2016 5.4 13.43 19 158 0.4 232 437 7.7 NM <1 <1 64 <1 <50 NA <5 2.78 664 <1 218 <0.023 <1 18.3 59 26 <0.2 100 <0.3 IABMW-01S 04/09/2015 6.0 0.80 18 653 1.07 25 230 10 4 <1 <1 173 <1 253 NA <1 35.6 30400 <1 5190 <0.01 <1 15.9 486 11 <0.2 370 0.361 IABMW-01S 06/10/2015 6.0 5.89 19 728 0.43 -32 173 3.77 4 <1 1.91 215 <1 226 NA <1 27.2 49100 1.42 5340 <0.01 <1 18.4 512 11 <0.2 400 <0.3 IABMW-01S 12/06/2015 6.2 6.60 16 659 0.6 -12 193 1.72 1.5 <0.5 1.9 160 1 <0.2 290 1 <0.03 <0.5 32.8 38900 <0.1 4000 <0.02 I <0.5 17.2 420 8 <0.1 355 <1 IABMW-01S O1/13/2016 5.3 5.00 14 569 0.31 -29 176 9.9 2.5 <1 2.22 175 <1 279 <0.03 <1 39.5 43500 <1 4680 0.029 <1 14.7 449 8.1 <0.2 350 0.309 IABMW-02S 04/09/2015 6.0 9.46 18 762 0.24 134 339 8.03 4 <1 <1 214 <1 1550 NA <1 52.7 13400 <1 4190 0.017 <1 18.6 2620 110 <0.2 530 <0.3 IABMW-02S 06/10/2015 6.2 12.95 20 605 0.44 20 225 2.26 4 <1 6.75 231 <1 1720 NA <1 50.6 25300 <1 4740 0.042 <1 17.6 3000 98 <0.2 570 0.368 IABMW-03S 04/09/2015 6.0 9.90 18 419 0.3 -49 156 1.26 3 <1 3.67 202 <1 603 NA <1 1.36 56700 <1 1180 <0.01 <1 12.3 405 29 <0.2 240 0.616 IABMW-03S 06/10/2015 6.1 1 11.25 19 407 0.69 1 31 236 2.16 6.5 <1 4.29 1 221 <1 655 NA <1 1.21 58000 <1 1210 <0.01 <1 13 544 42 <0.2 230 0.743 IABMW-03S 09/24/2015 6.2 14.64 18 447 0.3 -61 144 2.57 NM <1 1.92 179 <1 563 NA <1 1.21 57500 <1 1220 NA <1 11 422 NA <0.2 NA 0.754 IMW-04S 07/28/2016 6.1 5.62 21 190 0.24 65 270 9.46 NM <1 27.1 170 <1 71 2.2 <1 2.16 16500 <1 328 <0.01 3.35 5.1 228 4.6 <0.2 110 5.08 IMW-05S 07/29/2016 6.2 12.24 20 193 0.52 79 284 9.04 NM <1 <1 34 <1 80 2.6 <1 39.6 17500 <1 3190 <0.01 <1 10.6 112 20 <0.2 120 0.301 PZ-4 06/16/2015 6.6 9.22 18 1313 0.2 -97 108 4.13 3 <1 4.41 515 <1 1870 NA <1 1.46 56700 <1 473 <0.01 <1 15.5 7350 48 <0.2 790 0.874 PZ-4 09/30/2013 6.2 NM 18 635 1.03 4 NM 10.8 NM <0.34 1.5 j 446 NA 1400 NA 1.9 j NA 13600 0.12 j 549 <0.25 0.64 j 19 NA 62.4 0.26 j 597 NA PZ-5 06/16/2015 6.4 1 7.40 19 1302 0.22 1 -16 189 3.06 2.5 1.16 31.2 284 <1 1290 NA <1 31.1 8490 <1 2070 4.9 1.52 34.5 3480 280 1 0.658 980 1.84 PZ-5 09/30/2013 5.6 NM 19 437 0.87 88 NM 6.62 NM <0.34 1.7 j III NA 96.1 NA <1.6 NA 5890 0.1 j 1310 <0.25 <0.5 64.3 NA 30.1 <0.15 313 NA PZ-6 09/27/2013 6.1 NM 18 0 1.26 11 NM 36.3 NM <0.34 21.6 127 NA 177 NA 3.7 j NA 1 7630 1.1 257 <0.25 <0.5 49.9 NA 43.7 0.22 j 190 NA PZ-7 09/30/2013 6.3 NM 19 0 0.75 -20 NM 6.2 NM <0.34 77.2 582 NA 321 NA <1.6 NA 25500 <0.085 464 <0.25 <0.5 19.1 NA 3.1 j <0.15 225 NA PZ-8 09/30/2013 8.8 NM 19 589 2.25 125 NM 107 NM 17.2 59.9 371 NA 5570 NA <1.6 NA 581 1.5 27.1 <0.25 4.1 74.9 NA 268 <0.15 550 NA SMW-3 06/12/2015 5.6 4.93 20 3 0.59 26 231 5.87 3 <1 <1 50 <1 90 NA <1 56.4 13700 <1 2760 <0.01 <1 14.9 90 18 <0.2 150 0.323 SMW-3 09/25/2015 5.7 1 7.90 19 266 0.4 1 10 215 3.57 NM <1 3.84 76 <1 139 NA <1 78.5 16200 <1 2600 NA <1 16.1 112 NA <0.2 NA 0.349 SMW-3 12/05/2015 5.8 3.15 12 225 0.7 148 353 8.83 2.5 <0.5 0.52 69 <0.2 120 <0.03 <0.5 93.3 5400 <0.1 2400 <0.02 <0.5 15.2 100 17.7 <0.1 151 <1 SMW-3 01/13/2016 5.5 3.00 7 208 0.7 120 325 29.2 1 <1 <1 57 <1 97 <0.03 M1 <1 83.5 3360 <1 2830 0.024 <1 14.5 101 20 <0.2 150 <0.3 SMW-3 09/25/2013 5.5 NM 19 159 1.71 71 NM 7.08 NM <0.34 0.75 j 46 NA 157 NA <1.6 NA 3760 <0.085 1380 <0.25 <0.5 19.3 NA 23 <0.15 123 NA SMW-4 06/16/2015 5.8 6.41 20 199 0.4 -106 99 4.02 3.5 <1 6.02 114 <1 318 NA <1 <1 14900 <1 219 <0.01 <1 6.17 408 14 <0.2 130 3.59 SMW-4 09/25/2015 5.9 9.29 20 169 0.3 -8 197 8.58 NM <1 1.92 75 <1 168 NA 1.59 <1 23800 <1 276 NA <1 0.913 144 NA <0.2 NA 2.65 SMW-4 12/06/2015 5.9 1 5.28 16 770 0.2 12 217 8.85 1.5 <0.5 2.6 91 0.22 250 <0.03 1.1 <0.5 9500 0.25 150 <0.02 0.53 9.04 340 14.3 <0.1 b 79 4.3 SMW-4 DUP 12/06/2015 5.9 5.28 16 770 0.2 12 217 8.85 1.5 <0.5 3 88 0.26 240 <0.03 1.2 <0.5 9300 0.12 150 <0.02 0.81 9.18 330 15.4 <0.1 132 4.6 SMW-4 01/13/2016 5.9 4.40 14 194 0.18 20 225 10.75 NM <1 3.61 107 <1 283 <0.03 2.72 <1 12500 <1 199 0.054 <1 6.9 441 35 <0.2 160 6.68 SMW-4 09/26/2013 5.7 NM 20 148 0.84 -40 NM 11.1 NM <0.34 7.4 116 NA 293 NA <1.6 NA 26400 0.26 j 294 <0.25 <0.5 8.08 NA 9.700001 <0.15 148 NA SMW-4 DUP 09/26/2013 5.7 NM 20 148 0.84 -40 NM 11.1 NM <0.34 7.4 113 NA 292 NA <1.6 NA 24600 0.28 j 274 <0.25 <0.5 7.38 NA 7.2 <0.15 135 NA SMW-5 12/07/2015 6.4 6.22 15 380 0.2 -47 158 13.7 2.5 <0.5 1.6 100 <0.2 200 <0.03 <0.5 10.2 49800 <0.1 1 780 1 0.038 <0.5 7.67 250 58.8 <0.1 237 <1 SMW-5 01/13/2016 6.3 5.41 14 358 0.1 -40 165 15.9 4.5 <1 1.56 102 <1 184 <0.03 <1 11.8 51700 <1 857 0.03 <1 8.48 245 65 <0.2 180 <0.3 SMW-5 09/30/2013 1 6.4 1 NM 18 357 1.92 -94 1 NM 2.63 NM <0.34 8.5 55.3 NA 226 NA <1.6 NA 58900 <0.085 1170 <0.25 0.85 j 10.4 NA 24.2 <0.15 243 NA Water Supply Wells L-2 (Duke) 08/13/2015 NM NM NM NM NM NM NM NM NM <1 <1 25 <1 <50 NA <5 <1 60 <1 <5 NA <1 15.5 131 24 <0.2 230 1.34 L-2(State) 08/13/2015 7.7 NM NM NM NM NM NM NM NM <10 <2 25 <5 <50 <50 <10 <50 51 <2 <10 NA <5 17 120 26 <2 229 <25 L-2 (Vendor) 08/13/2015 6.9 NM 17 357 3.95 NM NM <1 NM <0.5 <0.5 23.7 <0.2 17.3 0.32 <0.5 <0.5 <50 0.14 1.4 NA <0.5 16.1 121 24.8 <0.1 221 1.1 L-3A (Duke) 04/02/2015 NM NM NM NM NM NM NM NM NM <1 <1 63 <1 <50 NA <5 <1 65 <1 29 NA <1 12.3 45 12 <0.2 100 0.563 L-3A (Vendor) 04/02/2015 5.9 NM 14 160 10.9 NM NM 1.5 NM <1 <1 59.9 <0.0156 18.6 NA 0.75 1 60.5 0.125 28.8 NA <0.156 12.6 48.9 12 <1 72 <5 L-3A (Vendor) 08/13/2015 6.2 NM 18 159 0.19 NM NM 1.4 NM <0.5 <0.5 59.8 <0.2 23.6 <0.03 <0.5 1.4 159 0.5 47 NA <0.5 9.02 42.8 8.1 <0.1 81 <1 L-3B(Duke) 04/02/2015 NM NM NM NM NM NM NM NM NM <1 <1 71 <1 <50 NA <5 1.73 153 <1 26 NA <1 15.4 59 16 <0.2 120 <0.3 L-3B (Vendor) 04/02/2015 5.6 NM 14 197 11.1 NM NM 1.7 NM <1 <0.0469 89.5 <0.0156 13.8 NA 0.75 1.8 191 <0.0469 34.1 NA <0.156 18.8 82.8 16 <1 124 <5 L-3B (Vendor) 08/13/2015 5.8 NM 20 229 0.1 NM NM 2.7 NM <0.5 <0.5 75.8 <0.2 11.4 <0.03 <0.5 12 6830 0.72 142 NA <0.5 21 60.3 17.3 <0.1 120 <1 L-8(Duke) 03/27/2015 NM NM NM NM NM NM NM NM NM <1 <1 93 <1 <50 NA <5 <1 232 1.59 19 NA <1 7.15 91 12 <0.2 150 0.338 L-8(State) 03/27/2015 6.7 NM NM NM NM NM NM NM NM <10 <2 100 <5 <50 NA <10 <50 74 2.2 12 NA <5 7.8 87 14 <2 150 <25 L-8 (Vendor) 03/27/2015 6.5 NM 15 222 2.9 NM NM <1 NM <0.5 <0.5 89.9 <0.2 27.8 0.075 <0.5 <0.5 52.5 0.96 11.4 NA <0.5 6.89 91.2 11.6 <0.1 152 <1 L-9(Duke) 03/27/2015 NM NM NM NM NM NM NM NM NM <1 <1 223 <1 1 <50 NA <5 1.64 63 4.97 64 NA <1 5.67 72 14 <0.2 150 <0.3 P:\Duke Energy Progress. 1026\104. Lee Ash Basin GW Assessment\19.EG_CSASUP\tables\Table 4-4 Surficial Groundwater Exceedances Incorporating Provisional Background.xlsx Page 8 of 9 TABLE 4-4 SURFICIAL GROUNDWATER EXCEEDANCES INCORPORATING PROVISIONAL BACKGROUND H.F LEE ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, GOLDSBORO, NC Analytical Parameter PH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Barium Beryllium Boron Chromium (VI) Chromium Cobalt Iron Lead Manganese Nitrate (as N) 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 ug/L ug/L ug/L ug/L ug/L ug/L mg-N/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* SO 700 4* 700 0.07^ SO 1* 300 15 50 10 20 NE NE 250 0.2* 500 0.3* Active Ash Basin 4.1-6.7 NE NE NE NE NE NE NE NE NE NE 718.8 0.44 NE 0.399 NE 44.79 31854 OAS 557 NE 1.351 24.83 124.5 199.5 NE 260.5 2.155 Sample ID Sample Collection Date Field Parameters Analytical Results L-9(State) 03/27/2015 5.8 NM NM NM NM NM NM NM NM <10 <2 240 <5 <50 NA <10 <50 <50 4.2 65 NA <5 6.1 68 13 <2 157 <25 L-9 (Vendor) 03/27/2015 5.3 NM 15 202 6.2 NM NM 1.9 NM <0.5 <0.5 213 <0.2 23.1 <0.03 <0.5 1.5 <50 8.3 63.6 NA 0.82 5.4 68.8 12.9 0.11 153 <1 L-10(Duke) 04/02/2015 NM NM NM NM NM NM NM NM NM <1 <1 217 <1 <50 NA <5 1.99 11 3.05 29 NA <1 6.52 102 14 <0.2 180 <0.3 L-10 (Vendor) 04/02/2015 5.0 NM 15 235 8.6 NM NM <1 NM <1 <1 179 0.25 22.6 NA 0.625 2.1 28.6 2 25.5 NA <0.156 7.36 101 6.1 <1 192 <5 L-10 (Vendor) 08/13/2015 4.4 NM 20 232 7.66 NM NM <1 NM <0.5 1 232 0.4 42.8 <0.03 <0.5 2.4 <50 5.2 28.2 NA 2.2 6.24 94.2 4.2 <0.1 152 <1 L-12(Duke) 03/27/2015 NM NM NM NM NM NM NM NM NM <1 <1 154 <1 <50 1 NA <5 1.79 69 2.4 19 NA <1 2.52 30 8.3 <0.2 57 <0.3 L-12(State) 03/27/2015 5.3 NM NM NM NM NM NM NM NM <10 <2 170 <5 <50 NA <10 <50 50 3.8 19 NA <5 2.8 27 6.4 <2 54 <25 L-12 (Vendor) 03/27/2015 5.0 NM 14 75 4.9 NM NM 2.4 NM <0.5 <0.5 144 0.24 8.7 <0.03 <0.5 1.8 <50 2.4 17.7 NA <0.5 2.45 29.3 5.2 <0.1 98 <1 L-16(Duke) 05/06/2015 NM NM NM NM NM NM NM NM NM <1 <1 108 <1 145 NA <5 1.25 1930 <1 342 NA <1 47.1 245 38 <0.2 450 <0.3 L-16 (Vendor) 05/06/2015 7.0 NM 19 5 10.8 NM NM 12 NM <1 <0.001 88 <0.25 130 NA <1 0.0012 1450 <0.003 317 NA <0.01 47.8 249 38 <0.001 <5 <0.005 L-18(Duke) 04/20/2015 NM NM NM NM NM NM NM NM NM <1 <1 260 <1 <50 NA <5 2.29 29 6.22 37 NA <1 3.08 40 23 <0.2 80 <0.3 L-18 (Vendor) 04/20/2015 4.5 NM 17 58 8.41 NM NM <1 NM <1 <5 268 <1 20 <100 <5 2 42 6 35 NA <5 3.28 40 10.8 <0.2 86.5 <0.3 L-19(Duke) 04/20/2015 NM NM NM NM NM NM NM NM NM <1 <1 337 <1 <50 NA <5 6.96 21 5.92 53 NA 1.71 2.53 76 30 <0.2 120 <0.3 L-19(Vendor) 04/20/2015 4.3 NM 15 90 7.42 NM NM <1 NM <1 <5 368 <1 10 <100 <5 7 60 6 55 NA <5 2.75 84 13.7 <0.2 127 <0.3 L-20(Duke) 08/31/2015 NM NM NM NM NM NM NM NM NM <1 <1 143 <1 <50 NA <5 1.54 322 1.34 19 NA <1 4.37 41 9.3 <0.2 63 0.425 L-20 (Vendor) 08/31/2015 5.4 NM 22 81 4.24 NM NM <1 NM <0.5 <0.5 142 0.3 16.4 <0.03 <0.5 1.6 316 1.4 19 NA 0.91 4.49 40 8.9 <0.1 75 <1 L-22(Duke) 08/31/2015 NM NM NM NM NM NM NM NM NM <1 <1 75 <1 <50 1 NA <5 <1 96 <1 14 NA <1 6.47 77 14 <0.2 120 0.617 L-22 (Vendor) 08/31/2015 6.2 NM 26 158 0.6 NM NM 1.8 NM <0.5 <0.5 1 73.3 <0.2 25.4 <0.03 <0.5 <0.5 67.6 0.47 13.5 NA <0.5 6.35 71.9 13.9 <0.1 116 <1 L-25 (Duke) 05/20/2015 NM NM NM NM NM NM NM NM NM <1 <1 39 <1 <50 NA <5 <1 91 <1 <5 NA <1 3.22 57 6.4 <0.2 100 2.56 L-25 (Vendor) 05/20/2015 6.5 NM 18 24 1.33 NM NM 1.3 NM <0.5 <0.5 34.7 <0.2 <5 0.033 <0.5 <0.5 64.4 0.51 1.3 NA <0.5 <0.05 53.6 7 <0.1 89 2.4 L-27(Duke) 05/20/2015 NM NM NM NM NM NM NM NM NM <1 <1 169 <1 <50 NA <5 1.46 13 1.48 43 NA <1 4.67 80 20 <0.2 110 <0.3 L-27 (Vendor) 05/20/2015 5.2 NM 18 137 4.55 NM NM <1 NM <0.5 <0.5 162 <0.2 <5 <0.03 <0.5 1.6 <50 1.5 42 NA 0.66 <0.05 75.5 <2 <0.1 <25 <1 L-28-1(Duke) 08/24/2015 NM NM NM NM NM NM NM NM NM <1 <1 99 <1 <50 NA <5 2.89 <10 2.56 38 NA <1 2.29 43 22 <0.2 110 <0.3 L-28-1 (Vendor) 08/24/2015 5.3 NM 18 118 5.91 NM NM <1 NM <0.5 <0.5 95.6 <0.2 25.1 0.053 <0.5 3 <50 2.6 36 NA 0.81 2.33 42.9 24.9 0.11 106 <1 L-28-2(Duke) 08/24/2015 NM NM NM NM NM NM NM NM NM <1 <1 103 <1 51 NA <5 <1 40 <1 <5 NA <1 14 134 24 <0.2 150 0.782 L-28-2 (Vendor) 08/24/2015 6.2 NM 21 266 2.67 NM NM 1.1 NM <0.5 <0.5 98.8 <0.2 40.3 0.037 <0.5 <0.5 <50 0.36 1.1 NA <0.5 14.2 129 22.2 <0.1 130 <1 L-31(Duke) 08/13/2015 NM NM NM NM NM NM NM NM NM <1 <1 169 <1 <50 NA <5 2.96 352 1.86 61 NA 1.06 7.04 58 25 <0.2 77 0.444 L-31 (Vendor) O8/13/2015 5.1 NM 20 113 1.98 NM NM 1.5 NM <0.5 <0.5 156 0.78 25.7 <0.03 <0.5 2.8 262 2.1 49.8 NA 1.4 6.43 52.2 21.3 <0.1 64 <1 Prepared by: BER Checked by: MCD Notes: I_ - Concentration exceeds the NCAC 2L standard, Appendix A, April 13, 2013, or provisional background concentration (whichever is greater) ORP = Oxidation Reduction Potential Deg C = Degree Celsius mg/L = milligrams per liter umhos/cm = micro mhos per centimeter ft = Feet NE = Not established mg-N/L = milligram nitrogen per liter Spec Cord = Specific Conductance NO = Not detected NTU = nephelometric turbidity unit mV = millivolts NM = Not measured Temp = Temperature S.U. = Standard Unit ug/L = microgram per liter DUP = Duplicate DO = Dissolved Oxygen NA = Not analyzed Eh = Redox Potential < = concentration not detected at or above the reporting limit. = NC DHHS Health Screening Level. * - 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. C = Associated midday/end of day field parameter calibration not within range. D3 = Sample was diluted due to the presence of high levels of non -target analytes or other matrix interference. j = indicates concentration reported below Practical Quantitation Limit (PQL), but above Method Detection Limit (MDL) and therefore concentration is estimated. M1 = Matrix spike recovery was high: the associated Laboratory Control Spike (LCS) was acceptable. M6 = Matrix spike and Matrix spike duplicate recovery not evaluated against control limits due to sample dilution. N1 = This sample was inadvertently collected with sample running through the flow cell and should be considered invalid based on possible contamination from the flow cell. Data was not included in the provisional background concentration estimations. P:\Duke Energy Progress. 1026\104. Lee Ash Basin GW Assessment\19.EG_CSASUP\tables\Table 4-4 Surficial Groundwater Exceedances Incorporating Provisional Background.xlsx Page 9 of 9 TABLE 4-5 CAPE FEAR GROUNDWATER EXCEEDANCES INCORPORATING PROVISIONAL BACKGROUND H.F LEE ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, GOLDSBORO, NC Analytical Parameter PH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Arsenic Boron Chromium (VI) Cobalt Iron Manganese Sodium Strontium 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 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 10 700 0.07A 1* 300 50 NE NE 500 0.3* Provisional Background 6.1-8.2 NE NE NE NE NE NE NE NE 2.833 317.5 0.0575 2.616 39795 1540 123.5 146.5 586.7 1.069 Sample ID Sample Collection Date Field Parameters Analytical Results Background AMW-11BC 03/02/2015 7.1 3.78 15 1498 0.15 -487 282 9.9 3 <1 <50 NA _ .,. 6300 1220 6.19 29 <250 <0.3 AMW-11BC 06/11/2015 7.2 6.03 19 134 0.35 -168 38 4.62 0.5 <1 <50 NA 1.05 3290 983 6.56 33 86 <0.3 AMW-11BC 09/24/2015 7.6 7.61 19 137 0.29 -230 -25 5.13 NM <1 <50 NA <1 1460 600 7.54 37 NA <0.3 AMW-11BC 12/04/2015 7.2 4.90 13 161 0.24 -222 -17 2.63 1.6 <1 <50 <0.03 <1 4910 1380 6.29 39 83 <0.3 AMW-11BC O1/12/2016 7.1 3.35 15 154 0.21 -171 34 6.55 0.5 <1 <50 <0.03 1.41 6750 1 1520 5.84 39 92 <0.3 AMW-11BC 03/01/2016 6.9 S 3.26 15 167 S 0.51 S -181 24 7.6 2.5 <1 <50 <0.03 1.23 7460 1560 5.34 38 78 <0.3 AMW IIBC 061O812016 7.4 5.95 171 -193 8.4 <1 <50 <0.03 <1 7260 1470 6.45 47 7= 0.361 AMW-11BC O810312016 6.8 6.21 180 -106 6.03 <1 <50 1.2 <1 9820 1680 5.63 43 8151, 0.415 AMW-12BC 03/03/2015 6.2 6.45 10 175 0.5 -399 -194 5.73 3 <1 <50 NA 1.19 3260 285 16.5 46 110 <0.3 AMW-12BC 06/10/2015 6.3 11.19 22 142 0.67 54 259 3.82 3 <1 <50 NA <1 12600 287 11.3 34 87 <0.3 AMW-12BC 12/04/2015 6.2 11.90 1 11 112 0.6 -10 195 1 2 <1 <50 0.054 75 1 16 3.78 23 68 <0.3 AMW-12BC O1/11/2016 6.1 8.60 15 97 0.3 -43 163 1.8 3 1.12 <50 <0.03 <1 9280 180 10.4 26 65 <0.3 AMW-12BC 03/01/2016 6.3 7.82 16 120 0.62 3 208 0.8 3 1.17 <50 <0.03 <1 9020 167 10.5 24 81 <0.3 AMW-12BC 0610812016 5.9 10.48 20 113 0.45 -17 188 4.42 <1 <50 <0.03 <1 3780 143 9.62 26 54 <0.3 AMW-12BC 0810412016 5.7 15.92 21 105 0.36 119 324 9.73 <1 <50 <0.03 <1 5810 149 9.47 26 71 <0.3 AMW-13BC 0310512015 8.9 1 4.54 18 360 0.07 -374 -169 1 69.2 <1 70 NA <1 3620 43 22.4 151 200 0.962 AMW-13BC 06/10/2015 6.6 12.19 22 317 0.42 -85 120 8.24 4.5 <1 73 NA <1 10800 99 15.8 125 170 0.324 AMW-13BC 12/04/2015 7.2 9.23 15 309 0.5 -139 66 1 1 <1 67 <0.03 <1 9880 118 14.7 134 170 <0.3 AMW-13BC O1/11/2016 7.4 3.20 16 310 0.4 -129 76 1.84 1 <1 70 <0.03 <1 8750 126 15.9 142 170 <0.3 AMW-13BC 03/01/2016 7.1 3.96 17 311 0.3 -133 72 0.9 3 <1 68 <0.03 <1 9100 117 15 132 160 <0.3 AMW-13BC 0610812016 6.7 10.62 19 1 313 0.27 -165 40 1 0.97 4 <1 68 <0.03 <1 10800 102 14.2 125 150 <0.3 AMW-138C O810312016 7.0 11.62 21 305 0.25 -41 164 4.82 <1 69 0.65 M6 <1 10700 104 14.4 126 150 0.343 AMW-16BC 0712012016 6.6 27.02 21 297 2.5 322 527 5.93 <1 <50 0.058 12.4 16 48 17.6 33 120 3.2 IMW-01BC 05/27/2015 6.4 4.25 21 427 2.82 147 352 9.43 0 <1 156 NA <1 147 59 59.2 105 220 <0.3 IMW-01BC 06/12/2015 6.7 4.63 22 419 2.13 203 408 2.66 0 <1 171 NA <1 98 1 66 62.5 113 230 <0.3 IMW-01BC 09/24/2015 6.8 6.97 20 451 0.4 -76 129 2.1 NM <1 164 NA <1 4380 111 62.9 120 NA <0.3 IMW-01BC 12/06/2015 7.0 3.40 1 16 478 0.3 -90 115 1 1.84 2.5 0.87 150 <0.03 0.73 6500 110 61 110 223 <1 IMW-0IBC O1/12/2016 6.8 3.20 14 250 0.4 -80 125 3.7 5 <1 158 <0.03 <1 5490 132 63 114 240 <0.3 IMW-01BC 03/04/2016 6.9 3.36 8 447 0.79 143 348 9.7 0 <1 156 <0.03 <1 583 80 72.1 97 260 <0.3 IMW-01BC 0610712016 6.8 3.69 22 455 1.3 88 293 7.5 0 <1 153 0.052 <1 890 17 68.3 104 250 0.455 IMW-01BC O810312016 6.7 4.40 22 445 0.6 259 464 7.38 0 <1 1 153 0.038 <1 493 1 28 71.2 104 240 0.332 IMW-02BC 0512612015 7.8 1 3.61 23 521 0.7 -137 68 1 12 0 1.61 293 NA <1 364 38 81.4 143 280 0.429 IMW-02BC 0611212015 8.0 3.80 23 587 0.46 124 329 15.8 0 2.21 331 NA <1 771 50 101 129 350 0.629 IMW-02BC 12/06/2015 7.7 3.76 15 616 0.5 -120 85 7.33 0 1.5 320 <0.03 <0.5 660 75 92.7 150 267 <1 IMW-02BC 01/13/2016 8.0 3.51 10 1 600 0.65 108 313 7.96 0 1 1.69 308 <0.03 <1 572 47 119 133 340 0.438 IMW-02BC 03/03/2016 8.2 3.75 14 610 0.36 -210 -5 9.98 0 1.36 315 0.036 <1 745 25 128 98 370 0.637 P:\Duke Energy Progress.1026\104. Lee Ash Basin GW Assessment\19.EG_CSASUP\tables\Table 4-5 Cape Fear Groundwater Exceedances Incorporating Provisional Background.xlsx Page 1 of 2 TABLE 4-5 CAPE FEAR GROUNDWATER EXCEEDANCES INCORPORATING PROVISIONAL BACKGROUND H.F LEE ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, GOLDSBORO, NC Analytical Parameter pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Arsenic Boron Chromium (VI) Cobalt Iron Manganese Sodium Strontium 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 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 10 700 0.07A 1* 300 50 NE NE 500 0.3* Provisional Background 6.1-8.2 NE NE NE NE NE NE NE NE 2.833 317.5 0.0575 2.616 39795 1540 123.5 146.5 586.7 1.069 IMW-02BC 0610712016 8.6 3.55 21 663 0.4 -58 147 8.5 0 1.37 289 <0.03 <1 423 30 117 117 350 0.61 IMW-02BC 0810312016 8.3 3.50 22 604 0.31 -45 160 5.79 0.3 1.37 284 0.046 <1 245 29 104 128 340 0.527 IMW-03BC 05/27/2015 6.3 3.06 26 198 2.57 33 238 17 1 <1 56 NA <1 1510 79 7.39 83 110 <0.3 IMW-03BC 06/16/2015 6.2 3.32 22 186 1.76 -12 193 3.15 1 <1 52 NA <1 994 86 7.46 76 150 <0.3 IMW-03BC 12/06/2015 6.4 1.57 13 198 0.6 -43 162 4.16 2.5 0.5 51 <0.03 1.2 9700 150 <5 81 118 D6 <1 IMW-03BC 01/13/2016 6.8 1.50 15 122 5.6 2 207 9.5 3 <1 58 <0.03 <1 1800 45 6.54 85 110 <0.3 IMW-038C 0310412016 1 6.8 1.55 11 281 0.27 -65 140 1 41.6 6.5 <1 57 1 <0.03 1.31 10900 158 15.5 1 86 1 130 1 <0.3 IMW-03BC 0610812016 6.5 1.86 20 224 0.3 -37 168 8.7 6 <1 55 <0.03 <1 6250 148 10.8 86 110 <0.3 IMW-03BC 0810312016 6.5 2.63 24 228 0.37 31 236 1.27 7 <1 53 1.7 1.13 11000 144 9.04 85 110 <0.3 Active Ash Basin AMW-09BC 03/12/2015 7.4 3.88 15 272 0.18 -443 -238 28.5 2 <1 68 NA <1 3070 253 6.06 84 730 0.553 AMW-09BC 06/11/2015 7.2 6.97 24 271 0.92 125 330 8.01 1.5 <1 73 NA <1 3650 249 4.74 94 160 <0.3 AMW-09BC 12/04/2015 7.3 5.90 16 265 0.3 -110 95 9 2.5 <1 68 <0.03 <1 2520 196 4.23 89 140 <0.3 AMW-09BC 01/12/2016 7.4 4.32 15 260 0.27 -124 81 7.49 3.5 <1 68 <0.03 <1 2820 210 4.79 92 140 0.36 Inactive Ash Basin DMW-3 08/30/2013 6.0 NM 19 259 1.25 -43 NM 8.56 NM 1.3 j 141 NA NA 59700 3970 14.8 NA 206 DMW-3 06/12/2015 5.7 9.80 19 311 0.17 -25 180 4.67 2 <1 148 NA 41.8 49100 3650 10.5 52 190 <0.3 DMW-3 09/25/2015 5.8 12.03 18 310 0.25 -13 192 9.39 NM <1 162 NA 43.1 47900 3440 10.4 52 NA <0.3 DMW-3 12/05/2015 6.0 8.55 16 311 0.4 17 222 2.48 3.5 0.53 120 <0.03 39.5 48300 3100 10.6 49 249 <1 DMW-3 02/01/2016 6.0 5.73 17 304 0.48 -4 201 5.31 2.5 <1 139 <0.03 36.6 43200 2980 11.2 61 190 0.341 IMW-04BC 08/10/2016 6.4 6.28 22 135 0.43 157 362 70.3 NM <1 <50 2.4 <1 6200 449 10.1 92 59 1.87 IMW-05BC 08/10/2016 6.3 12.75 20 329 0.31 48 253 9.57 6 <1 <50 2.2 4.84 22900 637 13.7 87 200 1.07 Prepared by: BER Checked by: MCD Notes: - Concentration exceeds the NCAC 2L standard, Appendix A, April 13, 2013, or provisional background concentration (whichever is greater). ORP = Oxidation Reduction Potential NE = Not established ft = Feet NTU = nephelometric turbidity unit Temp = Temperature S.U. = Standard Unit DO = Dissolved Oxygen ug/L = microgram per liter Deg C = Degree Celsius umhos/cm = micro mhos per centimeter mg/L = milligrams per liter Spec Cond = Specific Conductance my = millivolts NM = Not Measured NA = Not analyzed 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. A = NC DHHS Health Screening Level. 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. M6 = Matrix spike and Matrix spike duplicate recovery not evaluated against control limits due to sample dilution. S = Associated calibration check did not meet specified criteria. Data was not included in the provisional background concentration estimations. P:\Duke Energy Progress.1026\104. Lee Ash Basin GW Assess ment\19.EG_CSASUP\tables\Table 4-5 Cape Fear Groundwater Exceedances Incorporating Provisional Background.xlsx Page 2 of 2 TABLE 4-6 BLACK CREEK GROUNDWATER EXCEEDANCES H.F. LEE ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, GOLDSBORO, NC Analytical Parameter PH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Chromium (VI) Cobalt Iron Manganese Sodium Strontium Thallium 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 mg/L ug/L ug/L ug/L 15A NCAC 02L Standard 6.5-8.5 NE NE NE NE NE NE NE NE 0.07A 1* 300 50 NE NE 0.2* 0.3* Provisional Background Concentrations 7.3 NE NE NE NE NE NE NE NE 0.16 1.11 1507 152 140.1 153 NE 1.15 Sample ID Sample Collection Date Field Parameters Analytical Results Background AMW-17BC 08/10/2016 7.3 5.30 23 429 0.48 201 406 16.8 0 0.16 1.11 507 52 40.1 153 <0.2 1.15 Active Ash Basin AMW-06RBC 05/26/2015 7.9 5.33 21 346 0.46 -145 60 8.89 1.5 NA <1 3640 235 30.3 127 <0.2 0.488 AMW-06RBC 06/09/2015 8.6 5.98 19 369 0.63 -179 26 2.56 2.5 NA <1 6360 342 33.6 142 <0.2 <0.3 AMW-06RBC 09/24/2015 7.1 7.85 18 457 0.3 -134 71 3.5 NM NA <1 6230 244 21.3 109 <0.2 <0.3 AMW-06RBC 12/05/2015 7.1 4.45 16 240 0.31 -122 84 3.03 4.5 <0.03 <0.5 5700 230 21.6 100 <0.1 <1 AMW-06RBC DUP 12/05/2015 7.1 4.45 16 240 0.31 -122 84 3.03 4.5 <0.03 <0.5 5500 220 21.3 100 <0.1 <1 AMW-06RBC 01/12/2016 7.0 4.18 15 148 0.3 -128 77 0.7 4.5 <0.03 <1 5320 245 20.9 105 <0.2 <0.3 AMW-14BC 05/20/2015 7.1 4.54 19 304 0.15 -114 91 9.3 1 NA <1 2090 121 30.9 117 0.402 <0.3 AMW-14BC 06/11/2015 7.1 5.62 20 329 0.53 110 315 4.63 2 NA <1 1960 115 38.1 119 <0.2 <0.3 AMW-14BC 12/04/2015 7.2 4.25 16 277 0.16 -159 46 1.91 2 <0.03 <1 2720 145 29.1 108 <0.2 <0.3 AMW-14BC 01/12/2016 7.2 3.93 14 243 0.23 -146 59 3.52 2.5 <0.03 <1 2440 148 29.8 110 <0.2 <0.3 AMW-15BC 05/20/2015 8.4 5.51 18 259 0.31 -151 55 21.6 1.4 NA <1 1860 97 25.6 97 <0.2 0.311 AMW-15BC 06/11/2015 7.5 6.60 19 256 0.4 118 323 9.29 0.5 NA <1 1510 90 30.2 88 <0.2 <0.3 AMW-15BC DUP 06/11/2015 7.5 6.60 19 256 0.4 118 323 9.29 0.5 NA <1 1490 89 30.3 86 <0.2 0.363 AMW-15BC 12/06/2015 7.7 5.07 16 228 0.38 -144 61 6.68 0.5 <0.03 <0.5 1300 82 26.8 78 <0.1 <1 AMW-15BC 01/12/2016 7.5 4.64 15 207 0.28 -155 50 7.92 1 <0.03 <1 1830 88 23.2 90 <0.2 <0.3 AMW-15BC DUP 01/12/2016 7.5 4.64 15 207 0.28 -155 50 7.92 1 <0.03 <1 1800 89 22.4 90 <0.2 <0.3 CTMW-1 12/13/2010 6.4 2.41 13 104 NM NM NM 1.2 NM NA NA 1560 86.1 NA NA <0.1 NA CTMW-1 06/08/2011 6.2 2.85 21 165 1.29 -89 117 7.94 NM NA NA 2230 100 NA NA <0.1 NA CTMW-1 10/05/2011 6.2 2.94 20 173 0.36 -51 154 3.12 NM NA NA 3620 102 NA NA <0.1 NA CTMW-1 03/15/2012 6.3 2.50 18 186 2.5 -87 118 9.33 NM NA NA 2170 86.6 NA NA <0.1 NA CTMW-1 06/13/2012 6.1 2.77 21 190 1.34 -111 94 9.32 NM NA NA 3690 93.5 NA NA <0.1 NA CTMW-1 10/17/2012 6.2 2.85 19 192 0.63 -1 205 6.19 NM NA NA 2160 96.9 NA NA <0.1 NA CTMW-1 DUP 10/17/2012 6.2 2.85 19 192 0.63 -1 205 6.19 NM NA NA 2210 97.7 NA NA <0.1 NA CTMW-1 03/07/2013 6.2 1.65 13 189 0.61 8 213 9.62 NM NA NA 2580 94 NA NA <0.2 NA CTMW-1 06/05/2013 6.1 3.44 19 201 0.26 36 241 40.6 NM NA NA 6660 111 NA NA <0.2 NA CTMW-1 10/11/2013 6.2 3.92 19 198 0.38 29 234 6.98 NM NA NA 2040 109 NA NA <0.2 NA CTMW-1 03/10/2014 6.2 0.41 18 202 1.48 122 327 5.83 NM NA NA 2040 102 NA NA <0.2 NA CTMW-1 06/11/2014 6.2 3.09 22 201 0.25 9 214 9.7 NM NA NA 3490 112 NA NA <0.2 NA CTMW-1 10/17/2014 6.2 2.04 19 146 0.28 48 253 40.6 NM NA NA 2620 112 NA NA <0.2 NA CTMW-1 03/03/2015 6.2 0.54 8 185 0.48 71 276 9.34 NM NA NA 1190 100 NA NA <0.2 NA CTMW-1 06/08/2015 6.1 3.62 20 195 0.35 25 230 4.97 2 NA 5.62 2590 126 14.7 NA <0.2 NA CTMW-1 10/06/2015 6.1 2.02 18 204 0.3 2.5230 1.8 NM NA 4.11 2040 117 14.7 91 <0.2 0.341 CTMW-1 12/05/2015 6.3 1.89 16 382 0.4 10 215 3.76 2.5 <0.03 3.8 2200 110 15.1 93 <0.1 <1 P:\Duke Energy Progress.1026\104. Lee Ash Basin GW Assessment\19.EG_CSASUP\tables\Table 4-6 Black Creek Groundwater Exceedances Incorporating Provisional Background.xlsx Page 1 of 2 TABLE 4-6 BLACK CREEK GROUNDWATER EXCEEDANCES H.F. LEE ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, GOLDSBORO, NC Analytical Parameter pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Chromium (VI) Cobalt Iron Manganese Sodium Strontium Thallium 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 mg/L ug/L ug/L ug/L 15A NCAC 02L Standard 6.5-8.5 NE NE NE NE NE NE NE NE 0.07A 1* 300 50 NE NE 0.2* 0.3* Provisional Background Concentrations 7.3 NE NE NE NE NE NE NE NE 0.16 1.11 1507 152 140.1 153 NE 1.15 Sample ID Sample Collection Date Field Parameters Analytical Results CTMW-1 02/01/2016 6.4 1.18 14 214 0.34 -6 199 7.01 2.5 <0.03 M1 1.47 3170 129 14.9 94 <0.2 1.15 CTMW-1 03/03/2016 7.2 0.00 13 204 0.29 4 209 1 1.5 NA 1.6 2390 116 15.3 97 <0.2 0.856 CTMW-1 06/07/2016 6.2 2.75 20 211 0.31 -52 153 4.52 NM NA 1.41 3410 133 15.1 97 <0.2 0.787 DMW-1 09/27/2013 6.1 NM 19 77 1.45 -39 NM 6.11 NM NA NA 5270 110 9.27 NA <0.15 NA DMW-1 06/09/2015 5.8 4.02 20 94 0.37 21 226 16.2 1.5 NA <1 2310 70 8.96 26 <0.2 <0.3 DMW-1 09/24/2015 6.2 5.22 19 168 0.3 21 226 3.94 NM NA <1 1650 71 8.96 27 <0.2 <0.3 DMW-1 12/05/2015 5.8 3.57 15 91 0.5 28 233 3.11 0.5 <0.03 <0.5 1600 65 8.70 26 <0.1 <1 DMW-1 02/01/2016 6.2 1.85 14 95 0.52 43 248 3.33 1.5 <0.03 <1 1540 69 8.91 27 <0.2 <0.3 DMW-2 09/27/2013 10.1 NM 17 32 0.46 -11 NM 80.7 NM NA NA 1600 59.9 41.1 NA <0.15 NA DMW-2 06/15/2015 11.3 8.05 23 599 0.73 230 435 10.2 0 NA <1 463 <5 23.7 2240 <0.2 2.01 DMW-2 09/24/2015 11.3 9.71 19 994 0.4 -172 33 4.13 NM NA <1 71 <5 16 2310 <0.2 0.5 DMW-2 12/04/2015 11.9 7.88 15 766 0.4 -250 -45 2.9 ND 0.15 <1 56 <5 14.8 2750 <0.2 <0.3 DMW-2 01/12/2016 12.0 7.28 15 627 0.28 -141 64 4.95 0.5 0.14 <1 59 <5 15.5 1900 <0.2 0.339 Prepared by: MCD Checked by: ALA Notes: 0 - Concentration exceeds the 15A NCAC 02L Standard, Appendix 2, April 1, 2013, or provisional background concentration (whichever is greater). ORP = Oxidation Reduction Potential NE = Not established ft = Feet NTU = nephelometric turbidity unit ND = Not detected 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 my = millivolts DUP = Duplicate NA = Not analyzed 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. A = NC DHHS Health Screening Level. M1 = Matrix spike recovery was high: the associated Laboratory Control Spike (LCS) was acceptable. P:\Duke Energy Progress.1026\104. Lee Ash Basin GW Assessment\19.EG_CSASUP\tables\Table 4-6 Black Creek Groundwater Exceedances Incorporating Provisional Background.xlsx Page 2 of 2 TABLE 4-7 BACKGROUND SURFICIAL GROUNDWATER UPPER PREDICTION LIMITS H.F. LEE ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, GOLDSBORO, NC Constituent Reporting Units Number of Samples Number of Detected Samples Minimum Detected Concentration Maximum Detected Concentration Mean Statistical Method UPL (1 Future Event) UPL (30 Future Samples) UPL (48 Future Samples) Aluminum ug/L 24 22 12 1100 261.1 95% WH Approx. Gamma UPL 871.8 2,392 2657 Arsenic ug/L 25 0 --- --- --- --- --- --- --- Barium ug/L 25 25 16 426 149 95% WH Approx. Gamma UPL 343.7 668.2 718.8 Beryllium ug/L 25 1 --- 0.44 --- --- --- --- --- Boron ug/L 25 0 --- --- --- --- --- --- --- Cadmium ug/L 25 1 --- 0.12 --- --- --- --- --- Chloride mg/L 23 23 4.1 29 12.27 95% WH Approx. Gamma UPL 24.43 42.83 45.63 Chromium (hexavalent) ug/L 13 9 0.033 0.11 0.07 95% WH Approx. Gamma UPL 0.148 0.359 0.399 Chromium ug/L 25 0 --- --- --- --- --- --- --- Cobalt ug/L 25 23 1.18 14.9 6.13 95% WH Approx. Gamma UPL 17.26 40.87 44.79 Iron ug/L 23 23 14 25,900 2,058 95% WH Approx. Gamma UPL 7,778 28,030 31,854 Lead ug/L 25 1 --- 0.15 --- --- --- --- --- Manganese ug/L 23 22 12 880 173.2 95% KM WH Approx. Gamma UPL 557.1 557.1 557.1 Nickel ug/L 25 25 2.02 8.73 4.196 95% WH Approx. Gamma UPL 7.154 11.11 11.69 Selenium ug/L 25 2 0.75 1.14 0.945 95% KM Chebyshev UPL 1.351 1.351 1.351 Sodium mg/L 25 25 3.6 20.3 7.006 95% UPL (t) lognormal 12.61 23.04 24.83 Strontium ug/L 24 24 17 125 58.83 95% UPL (np) 124.5 124.5 124.5 Sulfate mg/L 23 22 1.4 25 9.909 95% UPL (t) lognormal 35.02 164.4 199.5 Total Dissolved Solids mg/L 23 23 28 140 76.04 95% WH Approx. Gamma UPL 144.7 245.3 260.5 Vanadium ug/L 24 7 0.307 0.627 0.457 95% WH Approx. Gamma UPL 0.715 1.942 2.155 Zinc ug/L 24 21 6 25 13.52 950% WH Approx. Gamma UPL 23.87 40.24 42.69 Prepared by: MCD Checked by: HHS Notes: Wells included for background analysis: AMW-115, AMW-125, AMW-135, IMW-01S, IMW-03S UPL - Upper Prediction Limit np - non -parametric Gamma - Gamma data transformation Lognormal - Lognormal data transformation mg/L = milligrams per liter ug/L = micrograms per liter P:\Duke Energy Progress. 1026\104. Lee Ash Basin GW Assessment\19.EG_CSASUP\tables\Table 4-7 Surficial Groundwater BG Upper Prediction Limit.xlsx Page 1 of 1 TABLE 4-8 BACKGROUND CAPE FEAR GROUNDWATER UPPER PREDICTION LIMITS H.F. LEE ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, GOLDSBORO, NC Constituent Reporting Units Number of Samples Number of Detected Samples Minimum Detected Concentration Maximum Detected Concentration Mean Statistical Method UPL (1 Future Event) UPL (9 Future Samples) UPL (27 Future Samples) Aluminum ug/L 28 26 11 682 88.12 95% UPL (t) lognormal 257.7 706.1 1,096 Antimony ug/L 29 1 --- 0.56 --- --- --- --- --- Arsenic ug/L 29 8 0.5 1.69 1.228 95% WH Approx. Gamma UPL 1.644 2.424 2.833 Barium ug/L 29 29 6 342 113.9 95% WH Approx. Gamma UPL 386.5 758.6 978.4 Boron ug/L 29 18 51 320 149.2 95% UPL (np) 317.5 317.5 317.5 Chloride mg/L 27 27 3 76 29.18 95% UPL (np) 75.2 75.2 75.2 Chromium (VI) ug/L 17 2 0.036 0.054 0.045 95% KM Chebyshev UPL (np) 0.0575 0.0575 0.0575 Chromium ug/L 29 2 1.52 2.24 1.88 95% KM Chebyshev UPL (np) 2.201 2.201 2.201 Cobalt ug/L 27 6 0.73 1.41 1.135 95% WH Approx. Gamma UPL 1.455 2.211 2.616 Iron ug/L 29 29 75 12,600 4,706 95% WH Approx. Gamma UPL 15,958 30,969 39,795 Manganese ug/L 29 29 16 1560 336.6 95% UPL (np) 1,540 1,540 1,540 Nickel ug/L 28 16 0.9 2.68 1.81 95% WH Approx. Gamma UPL 2.844 4.267 5.022 Selenium ug/L 29 0 --- --- --- --- --- --- --- Sodium mg/L 29 28 3.78 128 34.82 95% UPL (np) 123.5 123.5 123.5 Strontium ug/L 29 29 23 150 83.07 95% UPL (np) 146.5 146.5 146.5 Sulfate mg/L 27 22 0.28 23 9.722 95% WH Approx. Gamma UPL 29.45 60.02 78.47 Thallium ug/L 29 0 --- --- --- --- --- --- --- Total Dissolved Solids mg/L 27 26 65 370 169.5 95% WH Approx. Gamma UPL 339.4 501.2 586.7 Vanadium ug/L 29 4 0.324 0.637 0.457 95% WH Approx. Gamma UPL 0.362 0.799 1.069 Zinc ug/L 29 3 6 17 8.333 95% KM Chebyshev UPL (np) 15.62 15.62 15.62 Prepared by: MCD Checked by: HHS Notes: Wells included for background analysis: AMW-11BC, AMW-12BC, AMW-13BC, IMW-01BC, IMW-02BC, and IMW-03BC. UPL - Upper Prediction Limit np - non -parametric Gamma - Gamma data transformation Lognormal - Lognormal data transformation mg/L = milligrams per liter ug/L = micrograms per liter P:\Duke Energy Progress.1026\104. Lee Ash Basin GW Assessment\19.EG_CSASUP\tables\Table 4-8 Cape Fear Groundwater BG Upper Prediction Limit.xlsx Page 1 of 1