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Home My WebLink AboutNC0003433_Cape Fear Tables_20160915TABLE 1-1 WELL CONSTRUCTION DATA CAPE FEAR STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, MONCURE, NC Well ID Date Installed Northing (Feet) Easting (Feet) Measured Well Depth (Feet-BTOC) Screened Interval (Feet-BGS) Measuring Point TOC (Feet-MSL) Ground Surface (Feet-MSL) MONITORING WELLS ABMW-01 3/23/2015 669755.80 1987963.85 37.20 30-35 201.60 198.66 ABMW-01S 3/25/2015 669762.22 1987950.15 53.00 46-51 201.83 198.64 ABMW-01BR 3/24/2015 669764.64 1987936.38 73.00 68-73 201.44 198.50 ABM W-02SU 3/26/2015 668917.88 1985754.47 15.52 7-12 193.66 190.47 ABMW-02SL 3/26/2015 668932.48 1985740.95 32.28 20-30 193.64 190.59 ABMW-03 4/22/2015 667363.16 1985346.947 23.07 15-20 187.23 184.33 ABMW-03S 4/22/2015 667353.24 1985364.171 40.20 32-37 187.17 184.26 ABMW-03SR 2/19/2016 667348.63 1985374.53 41.32 33-38 187.29 184.18 ABMW-03BR 4/21/2015 667358.49 1985355.134 69.12 61-66 187.24 184.29 ABMW-04 4/11/2015 668904.00 1985275.893 30.20 21-26 185.60 182.55 ABMW-04S 4/13/2015 668915.16 1985272.356 45.60 40-45 185.55 182.47 ABMW-05 5/8/2015 672319.99 1985006.451 19.80 12-17 186.78 183.57 ABMW-05S 5/8/2015 672313.76 1984987.412 35.20 28-33 186.39 183.34 ABMW-05BR 5/9/2015 672317.28 1984996.572 63.11 55-60 186.56 183.54 BG MW-04 7/28/2010 672664.35 1986489.61 22.19 9-19 180.74 177.70 BGTMW-04 11/18/2010 672663.82 1986496.35 52.24 38-48 180.85 175.50 CMW-01 8/24/2010 666928.02 1985167.50 18.55 5-15 165.67 162.30 CTMW-01 8/26/2010 666936.52 1985163.26 55.61 38-53 166.04 163.40 CMW-02 8/30/2010 671530.05 1984677.55 17.25 4-14 169.40 166.60 CTMW-02 9/1/2010 671538.77 1984675.45 56.47 42.5-52.5 169.17 166.50 CMW-03 9/2/2010 672774.76 1985020.89 18.92 5-15 175.96 172.70 CMW-05 11/19/2010 670569.11 1988084.54 23.52 10-20 182.44 178.60 CMW-06 11/22/2010 668117.34 1988906.82 18.12 4-14 169.89 166.60 CMW-07 12/1/2010 668474.28 1986974.79 28.36 16.5-26.5 184.58 181.50 CTMW-07 12/3/2010 668479.37 1986975.86 52.34 38-48 184.66 181.40 CMW-08 11/30/2010 668852.85 1984746.56 18.39 5-15 170.21 167.70 CTMW-08 11/30/2010 668845.58 1984743.29 52.60 38.5-48.5 170.32 167.40 MW-1 10/9/2015 670074.25 1985117.77 NM 11-21 192.77 193.13 MW-2 10/13/2015 669974.85 1984833.24 NM 8-18 176.45 173.31 MW-3 10/8/2015 669895.41 1985014.88 NM 19-29 195.79 196.22 MW-4 10/12/2015 669779.47 1985245.03 NM 16-26 194.49 191.32 MW-5 10/8/2015 669723.68 1985001.64 NM 22-32 198.30 195.48 M W-05BR 4/24/2015 670565.59 1988071.28 52.98 45-50 181.44 178.09 MW-05BRR 2/23/2016 670557.66 1988075.55 61.21 52.5-57.5 181.77 178.57 MW-6 10/14/2015 669791.10 1984783.11 NM 7-17 173.04 173.37 MW-06BR 6/1/2015 668110.53 1988860.94 40.82 32.5-37.5 170.24 166.93 MW-7 10/14/2015 669563.50 1984726.44 NM 9-19 170.22 170.47 P:\Duke Energy Progress.1026\103. Cape Fear Ash Basin GW Assessment\19.EG_CSASUP\Tables\Table 1-1 Well Construction Data w Duke Edits.xlsx Page 1 of 3 TABLE 1-1 WELL CONSTRUCTION DATA CAPE FEAR STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, MONCURE, NC Well ID Date Installed Northing (Feet) Easting (Feet) Measured Well Depth (Feet-BTOC) Screened Interval (Feet-BGS) Measuring Point TOC (Feet-MSL) Ground Surface (Feet-MSL) MW-8 10/16/2015 669498.33 1984953.29 NM 15-25 195.08 191.89 MW-09 8/26/2013 668146.44 1990530.01 22.97 10-20 191.78 187.30 MW-09BR 4/27/2015 668137.20 1990518.16 43.09 35-40 192.06 188.35 MW-10 8/22/2013 672858.64 1985066.52 22.70 10-20 173.82 170.94 MW-10D 4/9/2015 672854.72 1985048.553 37.32 30-35 174.29 171.10 MW-10BR 4/10/2015 672860.37 1985054.601 60.27 53-58 174.22 171.05 MW-10BRL 6/29/2016 672852.06 1985062.147 82.23 70-80 173.14 170.97 MW-11 8/19/2013 671306.96 1986219.74 22.66 10-20 175.02 171.74 MW-12 8/23/2013 667647.84 1987858.33 22.90 10-20 171.12 167.72 MW-12BR 3/4/2015 667661.05 1987855.866 52.89 44-49 170.76 167.89 MW-13 8/23/2013 666832.43 1985629.89 23.25 10-20 171.95 168.95 M W-14 8/21/2013 668866.24 1984754.72 NM 70-80 173.94 171.37 MW-15SU 4/1/2015 672863.71 1985761.215 13.15 5-10 172.73 169.48 MW-15SL 4/1/2015 672863.92 1985751.233 23.36 15-20 172.69 169.45 MW-15BR 4/7/2015 672864.58 1985740.579 63.30 55-60 172.92 169.69 MW-16S 4/29/2015 671693.45 1988875.56 19.07 6-16 168.05 165.10 MW-16BR 5/5/2015 671676.17 1988871.14 53.91 46-51 168.55 165.35 M W-17SU 3/7/2015 670959.16 1986544.617 23.23 9-19 172.18 169.02 MW-17SL 3/6/2015 670965.96 1986551.728 32.38 25-30 172.66 169.54 MW-17BR 3/10/2015 670972.22 1986559.353 60.30 52-57 173.49 170.34 MW-18S 2/11/2015 667943.80 1988841.906 12.18 4.5-9.5 169.26 165.90 MW-19S 2/11/2015 667928.43 1986427.024 10.51 2.8-7.8 176.91 173.83 MW-20S 5/13/2015 666368.14 1985879.58 27.72 15-25 170.77 168.01 MW-20BR 5/14/2015 666368.04 1985860.32 64.34 56-61 171.23 167.98 M W-21SU 4/23/2015 669923.29 1984803.14 19.83 11-16 176.92 173.85 MW-21SL 4/23/2015 669935.84 1984808.19 31.77 24-29 176.96 173.88 MW-21BR 4/23/2015 669944.61 1984810.47 63.81 50-60 177.14 174.03 MW-22S 6/10/2016 671111.28 1987154.18 26.29 18-23 173.02 170.21 MW-22BR 6/12/2016 671111.28 1987157.15 62.00 54-59 173.10 170.14 MW-23S 6/21/2016 669745.65 1988976.04 22.52 15-20 175.74 173.63 MW-23D 6/20/2016 669742.01 1988970.10 47.28 35-45 175.72 173.62 MW-23BR 6/23/2016 669742.01 1988964.15 67.31 60-65 175.60 173.49 PIEZOMETERS CHATH-075-P100* 12/14/2014 672718.80 1985333.1 21.60 20-30 175.08 175.20 CHATH-075-P101* 12/17/2014 672294.10 1985551.70 25.43 10-20 184.11 184.39 CHATH-075-P102* 12/16/2014 672684.00 1985320.30 30.26 15-25 186.66 187.01 CHATH-075-P103* 12/15/2014 672305.60 1985615.80 14.50 4.6-14.6 165.51 165.78 P:\Duke Energy Progress.1026\103. Cape Fear Ash Basin GW Assessment\19.EG_CSASUP\Tables\Table 1-1 Well Construction Data w Duke Edits.xlsx Page 2 Of 3 TABLE 1-1 WELL CONSTRUCTION DATA CAPE FEAR STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, MONCURE, NC Well ID Date Installed Northing (Feet) Easting (Feet) Measured Well Depth (Feet-BTOC) Screened Interval (Feet-BGS) Measuring Point TOC (Feet-MSL) Ground Surface (Feet-MSL) CHATH-076-P100* 12/18/2014 669219.20 1984742.70 NM 25-35 168.85 169.09 CHATH-076-P101* 12/17/2014 669225.30 1984797.30 NM 5-15 194.56 194.87 CHATH-076-P102* 12/18/2014 668705.00 1984823.80 NM 25-35 195.04 195.26 CHATH-076-P103* 12/17/2014 668699.00 1984763.20 NM 5-15 166.72 167.07 CHATH-077-P100* 12/18/2014 667949.50 1984891.90 NM 21-31 194.93 195.35 CHATH-077-P102* 12/18/2014 666990.00 1985800.60 NM 20-30 185.72 186.03 CHATH-077-P103* 12/17/2014 666961.60 1985795.00 NM 9.5-19.5 180.31 180.67 CHATH-079-P100* 12/18/2014 669306.10 1987629.60 NM 15-25 193.03 193.35 CHATH-079-P101* 12/18/2014 668386.40 1988221.80 NM 20-30 192.94 193.29 CHATH-079-P102* 12/16/2014 668340.60 1988190.70 NM 5-15 173.41 173.73 CHATH-079-P103* 12/18/2014 669272.40 1988713.50 NM 20-30 193.67 193.93 CHATH-079-P104* 12/17/2014 670440.10 1987674.30 NM 20-30 193.59 193.82 CHATH-079-P105* 12/17/2014 670515.30 1987699.10 NM 5-15 173.08 173.40 P-1 10/15/2015 669748.49 1984845.64 NM 15-25 194.84 195.13 P-2 10/15/2015 670005.82 1984930.28 NM 15-25 193.38 193.80 PZ-01 3/2/2007 670759.20 1986562.10 NM 3-13 168.0 168.20 PZ-02 3/2/2007 670692.80 1987397.20 NM 5-15 175.0 172.60 PZ-03S 3/2/2007 669287.10 1988781.60 NM 3-13 174.0 171.00 PZ-03D 3/2/2007 669278.80 1988780.30 NM 45-60 173.9 171.10 PZ-04 3/2/2007 668139.91 1988446.45 NM 3-13 173.72 170.99 PZ-05 3/2/2007 669245.50 1987543.10 NM 3-13 169.80 170.00 PZ-06 8/21/2013 669621.57 1988202.29 NM 23-33 198.03 195.47 PZ-07 8/16/2013 668345.75 1985623.36 NM 8-18 189.74 187.29 PZ-08 8/15/2013 669441.46 1985252.22 NM 11-21 193.31 192.85 PZ-09 8/15/2013 668894.95 1985735.69 NM 12-22 193.82 190.82 PZ-10 8/19/2013 672333.12 1984978.51 19.64 8-18 185.46 183.53 Prepared by: RKD Checked by: CIS Notes: BGS - Below ground surface MSL - Mean sea level BTOC - Below top of casing NM - Not Measured Well depths measured by SynTerra z Well screen intervals are approximate and based off well installation records Monitoring well coordinate and elevation data for CSA wells from surveys provided by McKim & Creed (2015) and Amec Foster Wheeler (2016). McKim and Creed also verified survey location at several existing locations. * No boring logs available for "CHATH" piezometers, monitoring zone assigned based on depths and comparison to nearby sample locations with boring logs Red text indicates an abandoned well. P:\Duke Energy Progress.1026\103. Cape Fear Ash Basin GW Assessment\19.EG_CSASUP\Tables\Table 1-1 Well Construction Data w Duke Edits.xlsx Page 3 of 3 TABLE 1-2 SURFICIAL GROUNDWATER EXCEEDANCES CAPE FEAR STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, MONCURE, NC Analytical Parameter pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Barium Beryllium Boron Cadmium Chloride Chromium (VI) Chromium (VI) Speciation Chromium Cobalt Iron Lead Manganese Nickel Nitrate Selenium Sodium Strontium Sulfate Thallium Total Dissolved Solids Vanadium Reporting Units S.U. ft Deg C uos /cm mg/I mV mV NTUs mg/I ug/I ug/I ug/I ug/I ug/I ug/I mg/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I mg/I ug/I mg/I ug/I mg/I ug/I mg/I ug/I 15A NCAC 02L Standard 6.5-8.5 NE NE NE NE NE NE NE NE 1* 10 700 4* 700 2 250 0.07^ 0.07^ 10 1* 300 15 50 100 10 20 NE NE 250 0.2* Soo 0.3* Sample ID Sample Collection Date Field Parameters Analytical Results Background BGMW-4 12/15/2010 5.7 17.76 15 164 NM NM NM 4.6 NM <0.5 <5 36.8 NA <50 <0.08 17.2 NA NA <5 NA 112 <5 28.9 <5 6.2 <10 NA NA 26.1 <0.1 163 NA BGMW-4 03/07/2011 5.7 17.29 14 201 3.05 77 282 0.74 NM <0.5 <5 49.4 b NA <50 <0.08 13.4 b NA NA <5 NA 178 <5 10.6 <5 6.3 <10 NA NA 25.5 b <0.1 164 b NA BGMW-4 06/01/2011 5.7 16.72 21 229 2.44 -55 150 8.05 NM <0.5 <5 37.6 NA <50 0.26 15.2 NA NA <5 NA 162 b <5 16.9 <5 6 <10 NA NA 36.2 <0.1 183 NA BGMW-4 10/10/2011 5.6 17.89 19 202 2.4 -12 193 3.61 NM <0.5 <5 32.9 NA <50 <0.08 14.2 NA NA <5 NA 124 <5 13.4 <5 6.2 <10 NA NA 24.3 <0.1 165 NA BGMW-4 03/12/2012 5.4 16.76 18 327 5.93 -32 173 2.17 NM <0.5 <5 69 NA <50 0.097 10.5 NA NA <5 NA 150 b <5 83 <5 3.5 <10 NA NA 92.5 <0.1 229 NA BGMW-4 06/11/2012 5.6 17.16 18 221 2.13 -48 157 4.23 NM <0.5 <5 33.7 NA <50 <0.08 16.1 NA NA <5 NA 287 <5 8.9 <5 4.7 <10 NA NA 28.9 <0.1 172 NA BGMW-4 10/15/2012 5.5 1 18.38 18 1 182 2.4 1 199 1 404 5.61 1 NM <0.5 1 <5 46.5 1 NA <50 1 <0.08 11 1 NA NA <5 NA 3130 <5 61.2 <5 4.8 <10 NA NA 24.2 1 <0.1 89 NA BGMW-4 03/05/2013 5.5 17.35 14 191 3.48 163 368 5.89 NM <1 <1 28 NA <50 <1 9.1 NA NA <5 NA 1 120 <1 1 <5 <5 4 <1 NA NA 23 <0.2 160 NA BGMW-4 06/03/2013 5.4 16.68 18 251 3.58 231 436 4.16 NM <1 <1 39 NA <50 <1 12 NA NA <5 NA 129 <1 5 <5 4.4 <1 NA NA 49 <0.2 200 NA BGMW-4 09/03/2013 NM 16.70 NM NM NM NM NM NM NM NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA BGMW-4 09/04/2013 4.6 NM 19 67 1.3 168 NM 3.09 NM <0.34 <0.42 28.7 NA 8.4j <0.23 13 NA NA 3.3j NA 140j <0.085 3j <1.5 NA <0.5 39.2 NA 30.5 <0.15 176 NA BGMW-4 10/08/2013 5.7 17.29 17 194 2.03 250 455 6.85 NM <1 <1 30 NA <50 <1 9.9 NA NA <5 NA 265 <1 8 <5 4.1 <1 NA NA 25 <0.2 160 1 NA BGMW-4 03/11/2014 5.7 13.34 16 213 2.5 219 424 8.7 NM <1 <1 33 NA <50 <1 9.9 NA NA <5 NA 494 <1 9 <5 4.3 1 <1 NA NA 29 <0.2 170 NA BGMW-4 06/09/2014 5.7 15.61 19 248 NM 197 402 5.6 NM <1 <1 35 NA <50 1 <1 12 NA NA <5 NA 156 <1 <5 <5 3.6 <1 NA NA 37 <0.2 170 NA BGMW-4 10/13/2014 5.1 17.15 19 182 0.79 225 430 3.18 NM <1 <1 28 NA <50 <1 9.1 NA NA <5 NA 1 128 <1 1 <5 <5 3.8 <1 NA NA 24 <0.2 160 NA BGMW-4 03/04/2015 5.9 14.49 14 189 1.33 70 275 8.11 NM <1 <1 31 NA <50 <1 8.3 NA NA <5 NA 360 <1 11 <5 3.4 <1 NA NA 25 <0.2 140 NA BGMW-4 06/08/2015 5.7 16.20 18 188 1 97 302 9.85 NM <1 <1 91 <1 482 <1 9.3 NA NA <5 <1 3810 1.22 49 <5 15 <1 18.1 NA 26 <0.2 150 NA BGMW-4 10/07/2015 5.5 16.78 18 163 1.12 217 422 1.12 NM <1 <1 29 <1 <50 <1 7.2 NA NA <5 <1 57 <1 <5 <5 17 <1 29.2 40 20 <0.2 130 0.668 BGMW-4 12/02/2015 5.6 14.97 16 221 1.07 222 427 5.75 NM <1 <1 30 <1 <50 <1 8.5 2.7 M6 NA 2.45 <1 314 <1 <5 <1 NA <1 35.8 39 32 <0.2 180 1 1.23 BGMW-4 01/06/2016 5.9 13.39 14 179 1.15 223 428 25 0 <1 <1 33 <1 <50 <1 8 2.1 NA 3.06 <1 1390 <1 11 1.16 NA <1 30.2 37 30 <0.2 150 2.51 BGMW-4 03/02/2016 5.7 14.05 15 225 1.63 215 420 9.9 0 <1 <1 32 <1 <50 1 <1 9.3 2.1 NA <5 <1 523 <1 7 <5 17 <1 38 40 33 <0.2 160 1.6 BGMW-4 06/02/2016 5.7 15.40 18 185 0.73 110 315 7.11 NM <1 <1 30 <1 <50 <1 9.6 2.6 NA <5 1 <1 306 <1 9 <5 16 <1 33.6 40 28 1 0.224 140 1.19 MW-15SL 05/29/2015 6.0 10.58 18 329 0.1 116 321 4.97 NM <1 2.4 76 <1 <50 <1 6.3 NA NA <1 21.1 45500 <1 4560 1.69 NA <1 15.6 133 80 <0.2 210 <0.3 MW-15SL 06/30/2015 6.1 10.44 19 282 0.3 -61 145 5.26 4.5 <1 1.91 69 <1 <50 <1 7.6 NA NA <1 12.3 38400 <1 3860 <1 NA <1 15.5 114 52 <0.2 190 0.383 MW-15SL 09/01/2015 6.3 12.05 20 278 1.05 -95 110 6.32 1.5 <1 2.36 69 <1 <50 <1 7.7 NA NA <1 11.8 37500 <1 3630 <1 NA <1 15.7 109 47 <0.2 160 0.48 MW-15SL 12/02/2015 6.3 8.85 17 261 0.6 -50 155 9.89 1 <1 2.4 71 <1 <50 <1 7.8 <0.03 NA <1 13.5 33900 <1 3220 <1 NA <1 17 101 46 <0.2 190 0.322 MW-15SL O1/06/2016 6.4 7.01 10 251 0.35 -89 116 8.27 3.5 <1 2.86 73 <1 <50 <1 7.6 <0.03 NA <1 13.3 37200 <1 3330 <1 NA <1 16.8 102 44 <0.2 160 <0.3 MW-15SL 03/02/2016 6.1 7.68 14 269 0.2 -29 176 9.7 6.5 <1 2.42 74 <1 <50 I <1 7.3 <0.03 NA <1 16.9 35800 <1 2880 1.27 1 NA <1 16.8 101 47 <0.2 180 0.734 MW-15SL 06/02/2016 6.2 9.45 19 255 0.21 C -70 135 9.47 4 <1 2.54 75 <1 <50 <1 6.7 <3 D3 NA <1 17.5 36700 <1 2710 1.43 NA <1 17.2 98 43 <0.2 160 0.334 MW-155U 05/29/2015 4.6 10.47 24 2530 2.22 371 576 4.1 NM <1 2.47 29 10 <50 1.21 51 NA NA 3.39 387 2490 2.48 33700 150 NA 1.45 293 1270 1600 0.218 NA 4.57 MW-155U 09/01/2015 4.8 8.84 19 1567 6.39 123 328 NM NM <1 Nl 1.16 Nl 29 Nl 3.16 N1 54 N1 <1 Nl NA NA NA <1 Nl 153 N1 1580 N1 <l Nl 16800 N1 99.3 N1 NA <1 Nl 198 N1 793 Nl NA <0.2 N1 NA 1.51 N1 MW-155U 12/02/2015 6.2 5.83 15 2270 4 129 334 3.51 0 <1 <1 12 <1 116 <1 20 <0.03 NA <1 100 119 <1 9880 43 NA 1.58 409 743 1100 <0.2 1600 <0.3 MW-15SU O1/06/2016 6.7 5.70 11 1329 4.75 72 277 14.55 0 <1 <1 10 <1 105 <1 1.4 0.041 NA <1 48.9 73 <1 7480 21.4 NA 1.15 324 810 800 <0.2 1300 <0.3 MW-15SU 03/02/2016 6.3 5.75 12 1687 3.2 185 390 2 0 <1 <1 11 <1 71 <1 11 <0.03 NA <1 50.6 46 <1 7970 19.6 NA I <1 281 984 690 <0.2 1200 1 <0.3 MW-155U 03/03/2016 NM NM NM NM NM NM NM NM NM NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA MW-155U 06/02/2016 6.0 6.78 19 1290 1.22 C 122 327 9.87 3 <1 <1 16 <1 85 <1 7.6 0.035 NA <1 1 78.7 494 <1 9170 24.8 NA 1.05 185 932 510 1 <0.2 890 0.863 MW-16S 05/20/2015 6.2 2.19 17 978 16.6 111 316 4.26 NM <1 <1 160 <1 140 <1 210 NA NA <1 3.52 93 <1 202 3.14 NA <1 83.1 624 44 <0.2 630 1.1 MW-16S DUP 05/20/2015 6.2 2.19 17 978 16.6 111 316 4.26 NM <1 <1 162 <1 140 <1 200 NA NA <1 3.9 72 <1 207 2.95 NA <1 82.2 627 44 <0.2 620 1.05 MW-16S 06/11/2015 6.1 3.81 17 1017 0.26 -72 133 3.59 NM NA NA NA NA NA NA NA NA <0.006 NA NA NA NA NA NA NA NA NA NA NA NA NA NA MW-16S 06/30/2015 6.1 3.77 21 1080 0.24 50 255 3.26 0.5 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA MW-16S 09/01/2015 6.2 5.83 19 1196 4.5 36 241 2 0.5 <1 <1 202 <1 81 <1 280 NA NA <1 2.49 385 <1 105 2.16 NA <1 104 758 25 <0.2 830 0.674 MW-16S 12/02/2015 6.1 1.60 16 1073 0.4 -5 201 2.1 0.15 <1 <1 182 <1 113 <1 250 1 0.03 NA <1 1 260 <1 39 2.59 NA <1 98.3 619 32 <0.2 630 0.679 MW-16S 01/07/2016 6.2 0.96 12 1027 0.5 85 290 1 0.9 0 <1 <1 161 <1 113 <1 240 <0.03 NA 1.22 <1 184 <1 26 2.33 NA <1 92.8 587 43 <0.2 560 0.612 MW-16S 03/02/2016 6.2 1.10 14 967 1.26 117 322 1.4 0 <1 <1 155 <1 140 <1 210 <0.03 NA <1 <1 257 <1 19 1.82 NA <1 91.3 574 50 <0.2 550 0.782 MW-165 06/02/2016 6.0 1.70 15 980 0.22 C 145 350 1.18 0 <1 <1 164 <1 150 <1 220 <0.03 NA <1 <1 149 <1 17 1.8 NA <1 91.8 640 44 <0.2 640 0.964 Surficial ABMW-lS 05/08/2015 11.2 27.41 27 788 0.35 -133 72 0.91 NM 1.85 27.7 94 <1 2930 <1 20 NA NA <1 <1 14 <1 <5 4.5 NA 3.4 22.1 655 130 <0.2 360 73.3 ABMW-lS 06/15/2015 9.7 28.86 25 55 0.4 -226 -21 1.91 NM NA NA NA NA NA NA NA NA 0.016 NA NA NA NA NA NA NA NA NA NA NA NA NA NA ABMW-IS 08/31/2015 8.7 29.51 23 524 0.54 -170 35 3.7 0 <1 26.4 38 <1 3760 <1 19 NA NA <1 <1 56 <1 262 4.43 NA <1 19.5 589 140 <0.2 370 2.54 ABMW-lS 12/01/2015 8.4 27.21 16 521 0.3 -222 -17 1 ND <1 20.8 42 <1 3960 <1 20 <0.03 NA <1 <1 98 <1 503 3.89 NA <1 19 631 140 <0.2 330 0.791 ABMW-lS O1/05/2016 8.4 26.82 15 499 0.3 -230 -25 0.97 NM <1 17.9 45 <1 3860 <1 21 <0.03 NA <1 <1 133 <1 611 4.07 NA <1 20.9 761 140 <0.2 360 0.662 ABMW-lS DUP O1/05/2016 8.4 26.82 15 499 0.3 -230 -25 0.97 NM <1 18.5 42 <1 3900 <1 21 <0.03 NA <1 <1 89 <1 527 4.02 NA <1 19.5 685 130 <0.2 380 0.45 ABMW-2SL 05/20/2015 6.2 9.16 17 1 1785 0.37 32 1 237 3.69 1 NM <10 I <10 15 1 <10 <50 <10 6.6 NA NA <10 <10 3450 <10 519 <10 I NA <10 9.47 30 14 <2 100 <3 ABMW-2SL 06/16/2015 6.6 10.85 20 213 0.45 -157 48 3.37 NM NA NA NA NA NA NA NA NA <0.005 NA NA NA NA NA NA NA NA NA NA NA NA NA NA ABMW-2SL 08/31/2015 6.7 12.22 20 222 0.7 -106 99 7.2 2 <1 3.79 23 <1 <50 <1 4.2 NA NA <1 3.52 7490 <1 710 6.1 NA <1 11.6 45 5.3 <0.2 120 <0.3 ABMW-2SL 12/O1/2015 6.6 6.22 12 193 0.6 -107 98 1 2 <1 5.76 28 <1 <50 <1 4.7 <0.03 NA <1 2 12000 <1 777 2.02 NA <1 9.14 58 0.9 <0.2 91 <0.3 ABMW-2SL O1/05/2016 6.8 5.01 12 171 0.28 -128 77 2.5 3.5 <1 4.8 24 <1 <50 <1 4.7 <0.03 NA <1 1.02 10600 <1 642 1.74 NA <1 8.3 54 1.8 <0.2 110 <0.3 ABMW-2SU 05/20/2015 3.8 8.75 20 765 6.03 143 348 4.24 NM <1 <1 28 <1 198 <1 39 NA NA <1 19 15900 6.24 1540 14.8 NA <1 79.9 549 270 <0.2 440 <0.3 ABMW-2SU 06/16/2015 3.8 10.45 20 726 2.4 171 376 2.76 NM NA NA NA NA NA NA NA NA <0.005 NA NA NA NA NA NA NA NA NA NA NA NA NA NA ABMW-2SU OS/31/2015 4.2 11.61 20 676 0.5 225 430 6.7 1 <1 <1 30 <1 162 <1 41 NA NA <1 16.3 14900 3.34 1350 22.1 NA <1 86.2 414 370 0.238 450 0.737 ABMW-2SU 12/O1/2015 3.9 5.71 11 736 3.2 241 446 1 2.5 <1 <1 26 <1 295 <1 41 <0.03 NA <1 15.4 1180 3.9 1400 16.8 NA <1 84.8 707 280 <0.2 460 <0.3 ABMW-2SU O1/O5/2016 4.1 4.60 11 730 1.92 354 559 0.26 4 <1 <1 23 <1 267 <1 42 <0.03 NA <1 17.7 6140 3.19 1650 17.4 NA <1 81.7 712 330 <0.2 490 <0.3 P:\Duke Energy Progress. 1026\103. Cape Fear Ash Basin GW Assessment\19.EG_CSASUP\Tables\Table 1-2 Surficial GW 2L_IMAC Exceedances.xlsx Page 1 of 6 TABLE 1-2 SURFICIAL GROUNDWATER EXCEEDANCES CAPE FEAR STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, MONCURE, NC Analytical Parameter pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Barium Beryllium Boron Cadmium Chloride Chromium (VI) Chromium (VI) Speciation Chromium Cobalt Iron Lead Manganese Nickel Nitrate Selenium Sodium Strontium Sulfate Thallium Total Dissolved Solids Vanadium Reporting Units S.U. ft Deg C uos /cm mg/I mV mV NTUs mg/I ug/I ug/I ug/I ug/I ug/I ug/I mg/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I mg/I ug/I mg/I ug/I mg/I ug/I mg/I ug/I 15A NCAC 02L Standard 6.5-8.5 NE NE NE NE NE NE NE NE 1* 10 700 4* 700 2 250 0.07^ 0.07^ 10 1* 300 15 50 100 10 20 NE NE 250 0.2* Soo 0.3* Sample ID Sample Collection Date Field Parameters Analytical Results ABMW-3S 05/27/2015 11.7 17.54 21 3186 1.22 -39 166 0.86 NM <1 1.09 638 <1 205 1 <1 18 NA NA 8.68 1 <1 21 <1 <5 5.72 NA 1.73 67.8 1 2050 58 0.22 780 2.53 ABMW-3S 06/16/2015 12.1 18.17 25 3510 1 -235 -30 0.61 NM NA NA NA NA NA NA NA NA 8.31 NA NA NA NA NA NA NA NA NA NA NA NA NA NA ABMW-3S 08/31/2015 12.1 19.30 19 2620 0.42 -59 147 1.39 0 <1 1.56 669 <1 <50 <1 23 NA NA 3.97 1.14 115 <1 <5 16 NA 2.93 67.7 2780 17 <0.2 700 6.41 ABMW-3S 12/02/2015 11.8 16.90 17 2117 0.3 -160 45 1.5 NM <1 2.76 343 <1 122 <1 29 0.047 NA <1 <1 148 <1 <5 32.8 NA 2.6 70 1690 43 <0.2 570 14.7 ABMW-3S 01/05/2016 11.9 15.70 12 1760 0.4 -227 -22 4.5 0 <1 3.37 251 <1 189 <1 32 <0.03 NA <1 <1 156 <1 <5 36.6 NA 2.53 56.6 1420 70 <0.2 560 16.9 ABMW-3SR 03/03/2016 6.3 14.77 14 801 0.44 C -1 204 4 NM 2.6 31.9 94 <1 6020 <1 19 <0.03 NA <1 6.2 233 <1 3860 5.34 NA 2.04 29.2 2270 360 <0.2 610 18.6 ABMW-3SR 07/12/2016 6.0 16.80 19 817 0.2 4 209 3.49 NM 5.26 46.9 84 <1 5600 <1 18 <0.03 NA <1 5.11 320 <1 3620 3.57 NA <1 33 1980 360 <0.2 620 43.6 ABMW-4S 05/14/2015 6.2 19.53 18 413 0.24 -75 130 2.87 NM <1 1.62 94 <1 <50 1 <1 23 NA NA <1 1 1.02 18000 <1 1 1110 <1 NA <1 13.5 153 5 <0.2 230 0.328 ABMW-4S 06/16/2015 6.6 19.87 21 503 0.35 -109 96 3.5 NM NA NA NA NA NA NA NA NA 0.005 NA NA NA NA NA NA NA NA NA NA NA NA NA NA ABMW-4S 08/31/2015 6.5 20.68 19 509 2.9 -144 61 3.2 6 <1 3.36 110 <1 <50 <1 22 NA NA <1 <1 33200 <1 2030 <1 NA <1 15.7 204 0.4 <0.2 290 0.422 ABMW-4S DUP 08/31/2015 6.5 20.68 19 509 2.9 -144 61 3.2 6 <1 2.94 105 <1 <50 <1 22 NA NA <1 <1 31300 <1 1910 <1 NA <1 14.2 191 0.39 <0.2 270 0.336 ABMW-4S 12/01/2015 6.5 20.12 14 523 0.4 -71 134 3.4 1.5 <1 5.28 106 <1 64 <1 25 <0.03 NA <1 <1 12200 <1 1570 <1 NA <1 29 280 14 <0.2 280 0.358 ABMW-4S O1/05/2016 6.6 19.52 14 468 0.65 -86 120 0.1 2 <1 3.48 108 <1 <50 <1 24 <0.03 NA <1 <1 31200 <1 1670 <1 NA <1 15.3 187 4 <0.2 270 <0.3 ABMW-5S 06/02/2015 6.0 24.75 18 1991 0.33 -133 72 3.16 NM <1 <1 61 <1 187 <1 1 25 NA NA <1 327 99600 <1 32400 147 NA <1 43.4 1700 1400 0.306 1600 <0.3 ABMW-SS DUP 06/02/2015 6.0 1 24.75 18 1991 0.33 -133 72 3.16 NM <1 <1 61 <1 187 <1 25 NA NA <1 325 103000 <1 33700 149 NA <1 44 1700 1300 0.317 1700 <0.3 ABMW-5S 06/16/2015 6.3 25.30 20 2007 0.26 -190 15 2.03 NM NA NA NA NA NA NA NA NA <0.005 NA NA NA NA NA NA NA NA NA NA NA NA NA NA ABMW-5S 09/01/2015 5.7 25.87 20 1926 1 -67 138 5.44 2.5 <1 2.12 33 <1 150 <1 28 NA NA <1 339 142000 <1 35700 155 NA <1 43.3 1590 1300 <0.2 1800 0.848 ABMW-5S 12/03/2015 5.6 24.26 16 3535 0.3 34 239 4.49 2 <1 1.19 28 <1 147 <1 28 <0.03 NA <1 377 131000 <1 33900 190 NA <1 42.7 1680 1200 <0.2 1700 0.865 ABMW-5S O1/07/2016 5.3 22.43 16 1924 0.4 -67 138 0.79 3 <1 1.3 31 <1 156 <1 29 <0.03 NA <1 336 126000 <1 34400 162 NA <1 40.8 1750 1100 <0.2 1700 0.425 ABMW-5S DUP O1/07/2016 5.3 22.43 16 1924 0.4 -67 138 0.79 3 <1 1.18 27 <1 146 <1 30 <0.03 NA <1 337 128000 <1 34500 164 NA <1 42.8 1700 1300 <0.2 1700 0.371 CMW-1 12/17/2010 6.3 8.01 15 426 NM NM NM 5.07 NM <0.5 <5 209 NA 1810 <0.08 16.8 1 NA NA <5 NA 51100 <5 1370 <5 <0.1 I <10 NA NA <5 <0.1 209 NA CMW-1 03/08/2011 6.5 7.30 14 500 0.68 1 -87 118 13.7 NM <0.5 <5 208 NA 1790 <0.08 18.2 b NA NA <5 NA 50300 <5 1790 <5 <0.1 <10 NA NA <5 <0.1 232 b NA CMW-1 06/03/2011 6.1 8.12 17 445 0.89 -99 106 6.66 NM <0.5 <5 192 NA 1840 <0.08 17 NA NA <5 NA 51500 <5 1350 <5 <0.1 <10 NA NA <5 <0.1 188 NA CMW-1 10/11/2011 6.2 8.77 19 499 NM NM NM 8.72 NM <0.5 <5 208 NA 2910 <0.08 13.6 NA NA <5 NA 46300 1 <5 1180 <5 <0.2 <10 NA NA 23.1 <0.1 259 1 NA CMW-1 03/12/2012 6.4 7.42 17 438 0.41 -92 113 27.1 NM <0.5 <5 157 NA 2030 <0.08 14.9 NA NA <5 NA 41700 <5 1050 <5 <0.2 <10 NA NA <5 <0.1 188 NA CMW-1 DUP 03/12/2012 6.4 7.42 17 438 0.41 -92 113 27.1 NM <0.5 <5 163 NA 2080 <0.08 14.7 NA NA <5 NA 43400 <5 1080 <5 <0.2 <10 NA NA <5 <0.1 182 NA CMW-1 06/12/2012 6.2 8.32 19 497 1.12 -108 97 14 NM <0.5 <5 203 NA 2300 <0.08 1.8 NA NA <5 NA 54600 <5 1160 <5 <0.02 <10 NA NA <2 <0.1 205 NA CMW-1 10/15/2012 6.3 8.45 21 508 0.39 -86 119 8.87 NM <0.5 <5 201 NA 2950 0.15 1 13.3 NA NA <5 NA 42200 <5 1000 1 <5 <0.02 1 <10 NA NA 36.3 <0.1 242 NA CMW-1 03/04/2013 6.2 6.51 13 430 0.29 1 -53 1 152 24 NM <1 <1 153 NA 1880 <1 28 NA NA <5 NA 28100 <1 1610 6 <0.023 <1 NA NA 10 <0.2 240 NA CMW-1 06/04/2013 6.2 7.85 18 527 0.3 -40 165 10 NM <1 <1 205 NA 2160 <1 17 NA NA <5 NA 50000 <1 1250 <5 <0.023 <1 NA NA <0.1 <0.2 270 NA CMW-1 10/09/2013 6.3 8.51 19 514 0.18 -83 122 22.8 NM <1 1.05 217 NA 2550 2.41 13 NA NA <5 NA 54200 <1 1190 <5 <0.023 <1 NA NA 0.11 <0.2 220 NA CMW-1 03/12/2014 6.0 4.99 13 398 0.7 23 228 9 NM <1 <1 174 NA 1020 <1 31 NA NA <5 NA 34100 <1 2750 6 <0.023 <1 NA NA 11 <0.2 200 NA CMW-1 06/09/2014 6.2 8.21 22 528 0.2 -77 128 9.7 NM <1 <1 225 NA 1600 <1 15 NA NA <5 NA 59600 <1 1300 5 <0.023 <1 NA NA <0.1 <0.2 280 NA CMW-1 DUP 06/09/2014 6.2 8.21 22 528 0.2 -77 128 9.7 NM <1 <1 225 NA 1560 <1 15 NA NA <5 NA 60900 <1 1300 <5 <0.023 <1 NA NA <0.1 <0.2 280 NA CMW-1 10/14/2014 6.1 8.60 21 485 0.15 -94 111 8.4 NM <1 <1 187 NA 2750 <1 12 1 NA NA <5 NA 38500 <1 899 6 1 <0.023 1 <1 NA NA 26 <0.2 240 NA CMW-1 03/04/2015 6.1 5.80 16 400 0.08 -54 151 13.2 NM <1 <1 156 NA 1380 <1 29 NA NA <5 NA 28700 <1 1390 5 <0.023 <1 NA NA 2.1 <0.2 200 NA CMW-1 06/09/2015 6.2 8.26 20 517 0.16 -189 16 8.84 NM <1 <1 229 <1 1830 <1 18 NA NA <5 <1 52700 <1 1250 <5 <0.1 <1 24.1 NA <0.1 <0.2 240 NA CMW-1 06/17/2015 6.4 8.60 21 484 0.2 -81 124 22.5 NM NA NA NA NA NA NA NA NA <0.005 NA NA NA NA NA NA NA NA NA NA NA NA NA NA CMW-1 10/07/2015 6.0 6.62 20 319 1.7 -8 197 15.2 NM <1 1.36 156 <1 1530 <1 19 NA NA <5 1.36 16900 <1 647 7 <0.1 <1 21.3 191 35 <0.2 230 1 3.48 CMW-1 12/02/2015 6.1 6.65 18 489 0.3 -97 108 9.1 2 <1 <1 172 <1 1060 <1 64 <0.03 NA 1.7 5.66 30600 <1 1990 1.58 NA <1 37.2 228 11 0.207 290 5.02 CMW-1 03/01/2016 6.2 5.78 16 531 0.3 -66 139 4.1 5 <1 <1 210 <1 1760 <1 38 NA NA <5 <1 37700 <1 1850 <5 <0.1 <1 30 284 1.9 <0.2 260 1.83 CMW-1 06/01/2016 6.4 7.28 21 407 0.15 -101 104 8.18 NM <1 <1 164 <1 1760 <1 1 16 NA NA <5 <1 38100 <1 1 1030 <5 1 <0.1 I <1 21.3 236 3.1 <0.2 250 1.67 CMW-2 12/16/2010 5.5 10.71 14 782 NM NM NM 2.7 NM <0.5 <5 41 NA 107 0.15 12.6 NA NA <5 NA 2290 <5 5480 24.9 <0.1 <10 NA NA 449 <0.1 735 NA CMW-2 03/07/2011 5.6 10.29 13 933 2.5 88 293 3.02 NM <0.5 <5 33.2 b NA 96.5 0.2 13.6 b NA NA <5 NA 231 <5 5160 31.8 <0.1 <10 NA NA 571 <0.1 797 NA CMW-2 06/02/2011 5.4 11.03 18 888 0.43 -69 136 3.35 NM <0.5 <5 27.1 NA 97.2 0.24 13.6 NA NA <5 NA 429 b <5 5240 36.4 <0.1 <10 NA NA 463 <0.1 747 NA CMW-2 10/11/2011 5.4 12.20 18 880 0.83 -64 141 2.66 NM <0.5 <5 33.3 NA 114 0.2 14.8 NA NA <5 NA 1830 <5 5640 37.9 <0.2 <10 NA NA 8.9 <0.1 687 NA CMW-2 03/13/2012 5.5 10.38 15 904 0.99 -43 162 0.71 NM <0.5 <5 28.3 NA 122 <0.08 17.5 NA NA <5 NA 609 b <5 3110 31.3 <0.2 <10 NA NA 455 <0.1 803 NA CMW-2 06/12/2012 5.2 11.13 18 1056 1.65 -52 153 3.93 NM <0.5 <5 30.4 NA 112 <0.08 20.8 NA NA <5 NA 1730 <5 4120 45.5 <0.02 <10 NA NA 260 <0.1 877 NA CMW-2 DUP 06/12/2012 5.2 11.13 18 1056 1.65 -52 153 3.93 NM <0.5 <5 30.1 NA 108 0.091 19.9 NA NA <5 NA 1600 1 <5 1 3690 47.8 <0.02 <10 NA NA 556 <0.1 882 NA CMW-2 10/16/2012 6.0 12.45 17 1088 0.97 -42 163 2.03 NM <0.5 <5 32.8 NA 117 <0.08 21.2 NA NA <5 NA 5950 <5 8300 37.2 0.052 b <10 NA NA 591 <0.1 898 NA CMW-2 03/05/2013 5.1 10.12 13 1278 1.03 172 377 1.48 NM <1 <1 27 NA 93 <1 18 NA NA <5 NA 422 <1 3180 42 <0.023 <1 NA NA 630 <0.2 1100 NA CMW-2 06/04/2013 5.3 10.45 19 1289 0.6 123 328 9.87 NM <1 <1 31 NA 93 <1 20 NA NA <5 NA 3910 <1 5580 50 <0.023 <1 NA NA 630 <0.2 1100 NA CMW-2 10/08/2013 5.3 11.30 17 1113 0.53 134 339 6.38 NM <1 <1 24 NA 98 <1 19 NA NA <5 NA 1960 <1 2280 57 <0.023 <1 NA NA 550 <0.2 930 NA CMW-2 03/12/2014 5.3 7.01 14 1575 2.5 285 490 5.1 NM <1 <1 26 NA 115 <1 49 NA NA <5 NA 320 <1 3690 59 0.02 <1 NA NA 790 <0.2 1300 NA CMW-2 06/10/2014 5.4 10.20 19 1179 0.23 126 331 20 NM <1 <1 23 NA 90 <1 33 NA NA <5 NA 2230 <1 4440 52 <0.023 <1 NA NA 530 <0.2 960 NA CMW-2 10/14/2014 5.2 11.24 19 904 0.37 153 358 3.84 NM <1 <1 21 NA 88 <1 22 NA NA <5 NA 1390 1 2.17 1 4700 59 0.03 <1 NA NA 440 <0.2 780 NA CMW-2 03/04/2015 5.3 8.70 13 965 0.32 1 224 1 429 9.08 NM <1 <1 20 NA 71 <1 20 NA NA <5 NA 792 <1 6380 71 <0.023 <1 NA NA 430 <0.2 770 NA CMW-2 06/09/2015 5.3 10.52 19 947 0.57 -43 162 1.9 NM <1 <1 23 <1 78 <1 28 NA NA <5 1.82 796 <1 6760 72 <0.5 <1 36.2 NA 480 <0.2 780 NA CMW-2 10/07/2015 5.3 10.43 17 1008 1.26 100 305 6.92 NM <1 <1 23 <1 84 <1 21 NA NA <5 24.2 2960 <1 7670 69 <0.1 <1 35.5 983 450 <0.2 790 0.679 CMW-2 DUP 10/07/2015 5.3 10.43 17 1008 1.26 100 305 6.92 NM <1 <1 24 <1 84 <1 20 NA NA <5 21.1 3090 <1 8020 70 <0.1 <1 36.6 1050 480 <0.2 1 790 0.74 CMW-2 12/02/2015 5.1 8.98 17 963 0.3 107 312 9.6 1 <1 <1 20 <1 80 <1 18 <0.03 NA <1 7.58 1660 <1 7240 71.6 NA <1 33.4 978 450 <0.2 780 0.604 CMW-2 O1/07/2016 5.5 7.37 14 967 0.3 169 374 8.9 1.5 <1 <1 21 <1 79 <1 60 <0.03 NA <1 16.8 1650 <1 7430 70.4 NA <1 35.8 1030 510 <0.2 Soo 0.482 CMW-2 03/O1/2016 5.3 7.66 17 947 0.13 118 323 9.9 0 <1 <1 21 <1 72 <1 20 NA NA <5 20.4 2580 <1 7670 76 <0.5 <1 34.2 1020 440 <0.2 770 0.319 P:\Duke Energy Progress. 1026\103. Cape Fear Ash Basin GW Assessment\19.EG_CSASUP\Tables\Table 1-2 Surficial GW 2L_IMAC Exceedances.xlsx Page 2 of 6 TABLE 1-2 SURFICIAL GROUNDWATER EXCEEDANCES CAPE FEAR STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, MONCURE, NC Analytical Parameter pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Barium Beryllium Boron Cadmium Chloride Chromium (VI) Chromium (VI) Speciation Chromium Cobalt Iron Lead Manganese Nickel Nitrate Selenium Sodium Strontium Sulfate Thallium Total Dissolved Solids Vanadium Reporting Units S.U. ft Deg C uos /cm mg/I mV mV NTUs mg/I ug/I ug/I ug/I ug/I ug/I ug/I mg/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I mg/I ug/I mg/I ug/I mg/I ug/I mg/I ug/I 15A NCAC 02L Standard 6.5-8.5 NE NE NE NE NE NE NE NE 1* 10 700 4* 700 2 250 0.07^ 0.07^ 10 1* 300 15 50 100 10 20 NE NE 250 0.2* Soo 0.3* Sample ID Sample Collection Date Field Parameters Analytical Results CMW-2 06/01/2016 5.3 9.67 17 827 0.2 162 367 9.53 NM <1 <1 19 <1 57 1 <1 20 NA NA <5 13.2 2260 1 <1 8270 76 <0.5 <1 29.7 900 410 <0.2 700 0.392 CMW-2 CUP 06/01/2016 5.3 9.67 17 827 0.2 162 367 9.53 NM <1 <1 18 <1 <50 <1 21 NA NA <5 13.6 2220 <1 7990 74 <0.5 <1 28.6 866 410 <0.2 690 0.416 CMW-3 12/15/2010 6.2 15.66 14 298 NM NM NM 8.1 NM <0.5 <5 47.7 NA 714 <0.08 11.9 NA NA <5 NA <50 <5 1220 <5 <0.1 22.6 NA NA 114 <0.1 223 NA CMW-3 03/07/2011 6.1 15.52 13 341 3.52 107 312 0.75 NM <0.5 <5 51.7 b NA 678 <0.08 10.1 b NA NA <5 NA <50 <5 257 <5 <0.1 41.2 NA NA 64 <0.1 231 b NA CMW-3 06/02/2011 6.0 15.64 17 352 0.84 -71 134 6.3 NM <0.5 <5 49.9 NA 761 0.25 9.3 NA NA <5 NA <50 <5 282 <5 <0.1 39 NA NA 72.3 <0.1 221 NA CMW-3 10/10/2011 6.0 16.63 18 709 0.97 8 213 2.3 NM <0.5 <5 54.9 NA 1230 <0.08 12.1 NA NA <5 NA 153 <5 6160 <5 <0.2 37.7 NA NA 182 <0.1 472 NA CMW-3 03/13/2012 6.3 15.66 15 515 1.29 -80 125 4.91 NM <0.5 <5 57.4 NA 1030 <0.08 11.6 NA NA <5 NA 602 b <5 1 1500 <5 <0.2 36.8 NA NA 112 <0.1 304 NA CMW-3 06/11/2012 6.1 16.06 17 757 1.3 -100 1 105 4.44 NM I <0.5 <5 59.7 NA 1 1070 0.089 12.6 NA NA <5 NA 1910 <5 3120 <5 <0.02 27.6 NA NA 153 <0.1 396 NA CMW-3 10/16/2012 6.1 16.83 16 1047 1.09 10 215 8.93 NM <0.5 <5 46.4 NA 1260 0.1 17.7 NA NA <5 NA 453 <5 9750 <5 <0.02 20.6 NA NA 388 <0.1 729 NA CMW-3 03/05/2013 6.0 16.01 14 1172 0.78 20 225 1.62 NM <1 <1 65 NA 1180 <1 15 NA NA <5 NA 124 <1 4670 <S <0.023 40.7 NA NA 250 <0.2 630 NA CMW-3 06/04/2013 6.1 15.70 17 1446 0.7 55 260 3.7 NM <1 <1 84 NA 1320 2.39 16 NA NA <5 NA 210 <1 3670 <5 0.04 12.1 NA NA 250 <0.2 600 NA CMW-3 10/08/2013 6.2 16.05 17 779 0.91 124 329 1.17 NM <1 <1 65 NA 1300 <1 17 NA NA <5 NA 95 <1 2360 <5 <0.023 34.5 NA NA 220 <0.2 520 NA CMW-3 03/12/2014 6.0 13.64 14 693 2.7 194 399 0.9 NM <1 <1 66 NA 1020 <1 20 NA NA <5 NA 55 <1 1650 <5 <0.023 66.6 NA NA 170 <0.2 380 NA CMW-3 06/10/2014 6.1 14.66 18 481 4.3 186 391 5.1 1 NM <1 <1 51 NA 815 1 <1 19 NA NA <5 NA 27 <1 959 <5 <0.023 55.4 NA NA 130 <0.2 330 NA CMW-3 10/14/2014 5.9 16.02 19 572 1.07 194 1 399 1.56 NM <1 <1 44 NA 982 <1 25 1 NA NA <5 NA 24 <1 1810 <5 0.06 1 20.3 NA NA 140 <0.2 360 NA CMW-3 03/04/2015 6.2 14.70 12 851 0.82 74 279 2.51 NM <1 <1 53 NA 969 <1 34 NA NA <5 NA 129 <1 3200 <5 <0.023 8.9 NA NA 170 <0.2 450 NA CMW-3 06/09/2015 6.1 14.98 19 442 2.74 31 236 1.54 NM <1 <1 55 <1 653 <1 36 NA NA <5 <1 55 <1 85 <5 <0.2 46.8 19.6 NA 87 <0.2 250 NA CMW-3 10/07/2015 6.0 15.78 17 700 0.8 67 272 3.13 NM <1 <1 55 <1 834 <1 32 NA NA <5 2.02 109 <1 2060 <5 <0.1 16.7 21.5 873 130 <0.2 380 0.7 CMW-3 12/03/2015 6.2 14.45 15 1130 1 62 267 7.34 0 <1 <1 60 <1 825 <1 32 0.035 NA <1 2.5 265 <1 1870 1.37 NA 4.44 20.8 882 150 <0.2 360 1.21 CMW-3 01/07/2016 5.4 12.55 15 310 3.3 -33 172 2.24 0 <1 <1 55 <1 447 <1 28 0.54 NA 1.22 <1 29 <1 68 2.37 NA 9.18 18.9 404 89 <0.2 250 0.454 CMW-3 03/01/2016 5.7 12.60 14 330 5.2 220 425 0.5 1 0 <1 I <1 60 <1 443 1 <1 29 NA NA <5 <1 11 <1 82 <5 <0.5 22.4 19.1 485 84 <0.2 230 0.483 CMW-3 06/01/2016 6.1 13.92 16 512 3.38 167 1 372 0.86 NM <1 <1 52 <1 541 <1 23 NA NA <5 1 1.9 30 <1 1720 <5 <0.5 20.6 18.9 719 130 <0.2 330 0.567 CMW-5 12/16/2010 5.9 14.35 12 130 NM NM NM 42.7 NM <0.5 <5 69.1 NA 169 <0.08 10.6 NA NA <5 NA 1860 <5 217 <5 <0.1 <10 NA NA 29.8 <0.1 193 NA CMW-5 03/07/2011 6.4 12.67 13 209 3.6 84 289 3.77 NM <0.5 <5 53.2 b NA 152 <0.08 10 b NA NA <5 NA 87.8 <5 232 <5 <0.1 <10 I NA NA 33.6 b <0.1 216 b NA CMW-5 06/03/2011 6.1 13.21 17 204 1.91 -55 151 53.1 NM <0.5 <5 65.9 NA 142 <0.08 10 NA NA <5 NA 2750 <5 211 <5 <0.1 <10 NA NA 32.7 <0.1 190 NA CMW-5 10/10/2011 6.3 16.08 20 242 1.51 -1 204 18 NM <0.5 <5 63.3 NA 120 <0.08 10.7 NA NA <5 NA 1960 <5 182 <5 <0.2 <10 NA NA 25.9 <0.1 200 NA CMW-5 03/12/2012 6.6 12.15 17 226 3.47 -59 146 93.9 NM <0.5 <5 65.2 NA 187 <0.08 10 NA NA <5 NA 3360 <5 94 <5 <0.2 <10 NA NA 30.6 <0.1 181 NA CMW-5 06/11/2012 6.4 14.14 19 260 2.63 -29 176 1 20.4 NM <0.5 <5 1 59 NA 1 180 <0.08 10.7 NA NA <5 NA 834 <5 57.4 <5 0.048 b <10 NA NA 35.2 <0.1 197 NA CMW-5 10/15/2012 6.3 16.73 19 239 2.11 131 1 336 13.5 NM <0.5 <5 58.7 NA 143 0.1 10 NA NA <5 NA 1530 <5 41.8 <5 <0.02 <10 NA NA 32.5 <0.1 218 NA CMW-5 03/05/2013 6.1 13.04 12 1 221 4.03 139 344 9.07 NM <1 <1 55 NA 246 <1 8.1 NA NA <5 NA 316 <1 15 <5 0.03 1 <1 NA NA 32 1 <0.2 200 NA CMW-5 06/03/2013 6.0 13.38 19 251 2.85 201 406 8.55 NM <1 <1 64 NA 249 <1 10 NA NA <5 NA 362 <1 21 <5 0.09 <1 NA NA 38 <0.2 210 NA CMW-5 10/08/2013 6.3 15.25 16 281 0.97 246 451 46.3 NM <1 <1 70 NA 151 <1 11 NA NA <5 NA 2910 1.22 46 <5 0.08 <1 NA NA 34 <0.2 330 1 NA CMW-5 06/09/2014 6.2 14.43 19 193 2.2 186 391 52 NM <1 <1 54 NA 165 <1 9.6 NA NA <5 NA 2800 1.22 40 <5 0.03 <1 NA NA 29 <0.2 210 NA CMW-5 10/13/2014 5.9 16.56 20 222 0.94 219 424 142 NM <1 <1 81 NA 283 1 <1 9.8 NA NA 6 NA 5650 2.53 96 <5 0.04 <1 NA NA 36 <0.2 60 NA CMW-5 03/04/2015 6.1 11.90 15 230 3.77 89 294 35.6 NM <1 <1 1 72 NA 1 359 <1 10 NA NA <5 NA 2650 1.2 34 <5 0.03 <1 NA NA 43 <0.2 240 NA CMW-5 06/09/2015 5.9 15.11 20 201 3.32 1 -14 1 191 47.6 NM <1 <1 32 <1 <50 <1 8.8 NA NA <5 <1 99 <1 <5 <5 <0.1 <1 34.7 NA 47 <0.2 200 NA CMW-5 10/07/2015 6.1 16.52 19 292 3.8 190 395 714 NM <10 <10 147 <10 294 <10 17 NA NA 15 <10 14700 <10 158 7 0.26 1 <10 1 38.1 167 42 <2 290 28.9 CMW-5 12/02/2015 6.2 13.08 17 436 2.91 193 398 96.85 NM <1 <1 79 <1 198 <1 21 0.4 M1 NA 2.22 <1 2940 2.9 34 1.3 NA <1 57.3 151 42 <0.2 410 6.02 CMW-5 01/07/2016 6.2 12.25 11 152 2.22 214 419 683 0 <1 2.12 160 3.41 59 <1 7.5 0.15 NA 13.3 4.8 22600 28.1 1 346 7.41 NA <1 25.4 218 20 <0.2 580 1 29 CMW-5 03/02/2016 6.0 12.43 14 187 4.08 186 391 66.1 0 <1 <1 60 <1 340 <1 8.9 NA NA <5 <1 3060 1.48 36 <5 <0.1 <1 24.1 95 35 <0.2 190 8.7 CMW-5 06/02/2016 5.5 13.20 22 112 0.76 175 380 13 NM <1 I <1 29 1 <1 <50 1 <1 4.1 NA NA <5 <1 837 <1 16 <5 0.19 <1 12.6 71 10 <0.2 93 2.85 CMW-6 12/15/2010 6.7 3.95 13 529 NM NM NM 8.91 NM <0.5 <5 18.1 NA 704 <0.08 37.3 NA NA <5 NA 696 <5 178 <5 <0.1 <10 NA NA 181 <0.1 419 NA CMW-6 03/08/2011 6.9 3.78 9 774 1.97 1 87 1 292 1.35 NM <0.5 <5 17.6 b NA 492 0.58 39.9 NA NA <5 NA <50 <5 195 <5 <0.1 <10 NA NA 169 <0.1 508 NA CMW-6 CUP 03/08/2011 6.9 3.78 9 774 1.97 87 292 1.35 NM <0.5 <5 17.7 b NA 499 0.38 44.5 NA NA <5 NA <50 <5 194 <5 I <0.1 <10 NA NA 173 <0.1 511 NA CMW-6 06/02/2011 6.8 1 3.92 19 700 0.39 -72 133 1.93 NM <0.5 <5 15.1 NA 624 <0.08 39.7 NA NA <5 NA <50 <5 179 <5 <0.1 <10 NA NA 194 <0.1 424 NA CMW-6 10/11/2011 7.0 4.19 19 586 2.06 45 250 1.46 NM <0.5 <5 14.4 NA 874 <0.08 31 NA NA <5 NA 1 98.8 <5 1 135 <5 <0.2 <10 NA NA 14.9 <0.1 396 NA CMW-6 03/13/2012 7.1 3.99 15 582 1.25 -61 144 1.75 NM <0.5 <5 14.8 NA 780 <0.08 35.5 NA NA <5 NA 95 b <5 17.6 <5 <0.2 <10 NA NA 181 <0.1 411 NA CMW-6 06/12/2012 6.7 4.44 19 800 0.92 -37 168 2.46 NM <0.5 I <5 21.8 NA 722 <0.08 49.1 NA NA <5 NA 91.9 <5 362 <5 0.043 b <10 NA NA 210 <0.1 509 NA CMW-6 10/15/2012 7.0 4.65 19 628 0.57 53 258 4.9 NM <0.5 <5 14.5 NA 1010 <0.08 32.2 NA NA <5 NA 202 <5 46.7 <5 <0.02 <10 NA NA 139 <0.1 375 NA CMW-6 03/04/2013 7.0 3.66 12 646 1.55 1 100 1 305 1.75 NM <1 <1 14 NA 825 <1 28 NA NA <5 NA 54 <1 29 <5 <0.023 1 <1 NA NA 160 <0.2 410 NA CMW-6 06/03/2013 6.7 3.99 18 615 0.7 183 388 2.26 NM <1 <1 16 NA 1040 <1 31 NA NA <5 NA 84 <1 58 <5 <0.023 <1 NA NA 170 <0.2 390 NA CMW-6 10/08/2013 7.1 4.17 18 627 0.38 191 396 2.87 NM <1 <1 13 NA 1100 <1 30 NA NA <5 NA 69 <1 29 <5 <0.023 <1 NA NA 160 <0.2 410 NA CMW-6 03/13/2014 6.9 3.78 11 581 0.7 48 253 0.5 NM <1 <1 12 NA 1320 <1 30 NA NA <5 NA 1 24 <1 1 27 <5 <0.023 <1 NA NA 150 <0.2 380 NA CMW-6 06/10/2014 6.8 4.76 17 578 0.2 7 212 4.2 NM <1 <1 12 NA 1390 <1 27 NA NA <5 NA 104 <1 37 <5 <0.023 <1 NA NA 140 <0.2 370 NA CMW-6 10/13/2014 6.7 4.95 20 584 0.32 -21 184 1.11 NM <1 <1 11 NA 1210 <1 30 NA NA <5 NA 152 <1 34 <5 <0.023 <1 NA NA 150 <0.2 390 NA CMW-6 CUP 10/13/2014 6.7 4.95 20 584 0.32 -21 184 1.11 NM <1 <1 11 NA 1290 <1 30 NA NA <5 NA 152 <1 37 1 <5 0.05 <1 NA NA 150 <0.2 390 1 NA CMW-6 03/04/2015 6.2 4.09 15 462 0.26 1 9 1 214 44.4 NM <1 <1 21 NA 413 <1 23 NA NA <5 NA 5050 <1 908 <5 0.05 1 <1 NA NA 110 <0.2 330 NA CMW-6 06/09/2015 6.7 4.94 18 623 0.3 -189 16 6.27 NM <1 <1 18 <1 1560 <1 16 NA NA <5 1.14 556 <1 204 <5 <0.5 <1 107 NA 160 <0.2 380 NA CMW-6 06/18/2015 6.6 5.16 20 657 0.28 -168 37 1.89 NM NA NA NA NA NA NA NA NA 0.007 NA NA NA NA NA NA NA NA NA NA NA NA NA NA CMW-6 10/06/2015 6.0 1 4.43 19 1 399 0.47 142 347 178.7 NM <10 <10 52 <10 677 <10 20 NA NA 13 <10 1 13700 1 <10 431 7 <0.1 <10 80.2 62 120 <2 150 35.4 CMW-6 12/01/2015 6.5 3.82 15 515 0.42 40 245 18 0.5 <1 <1 16 <1 1080 <1 27 <0.03 NA 1.17 <1 1540 <1 154 1.06 NA <1 92.4 56 130 <0.2 350 4.02 CMW-6 O1/06/2016 6.8 3.90 12 520 0.8 71 276 5.8 NM <1 <1 12 <1 1640 <1 28 <0.03 NA <1 <1 559 <1 195 1.16 NA <1 94.6 60 150 <0.2 330 0.627 CMW-6 03/02/2016 6.8 3.75 13 576 3.26 96 301 3.4 0 <1 <1 15 <1 1500 <1 31 NA NA <5 <1 253 <1 111 <5 <0.5 <1 96.6 69 150 <0.2 370 4.48 P:\Duke Energy Progress. 1026\103. Cape Fear Ash Basin GW Assessment\19.EG_CSASUP\Tables\Table 1-2 Surficial GW 2L_IMAC Exceedances.xlsx Page 3 of 6 TABLE 1-2 SURFICIAL GROUNDWATER EXCEEDANCES CAPE FEAR STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, MONCURE, NC Analytical Parameter pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Barium Beryllium Boron Cadmium Chloride Chromium (VI) Chromium (VI) Speciation Chromium Cobalt Iron Lead Manganese Nickel Nitrate Selenium Sodium Strontium Sulfate Thallium Total Dissolved Solids Vanadium Reporting Units S.U. ft Deg C uos /cm mg/I mV mV NTUs mg/I ug/I ug/I ug/I ug/I ug/I ug/I mg/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I mg/I ug/I mg/I ug/I mg/I ug/I mg/I ug/I 15A NCAC 02L Standard 6.5-8.5 NE NE NE NE NE NE NE NE 1* 10 700 4* 700 2 250 0.07^ 0.07^ 10 1* 300 15 50 100 10 20 NE NE 250 0.2* Soo 0.3* Sample ID Sample Collection Date Field Parameters Analytical Results CMW-6 06/01/2016 6.8 3.90 18 563 0.29 -116 89 4.89 NM <1 <1 13 <1 1400 <1 31 NA NA <5 <1 307 <1 121 <5 1 <0.5 <1 105 67 150 <0.2 390 0.444 CMW-7 12/17/2010 6.6 21.25 13 445 NM NM NM 1.63 NM <0.5 <5 55.8 NA 375 <0.08 34.7 NA NA <5 NA 8470 <5 5480 <5 <0.1 <10 NA NA 103 <0.1 303 NA CMW-7 03/08/2011 6.6 21.21 15 527 0.86 -3 202 7.44 NM <0.5 <5 53.9 b NA 397 <0.08 35.5 b NA NA <5 NA 1840 <5 4850 <5 <0.1 <10 NA NA 96.2 <0.1 364 b NA CMW-7 06/02/2011 6.6 21.08 17 494 0.55 -75 131 7.01 NM <0.5 <5 40.7 NA 321 <0.08 32.8 NA NA <5 NA 9250 <5 5270 <5 <0.1 <10 NA NA 87.9 <0.1 282 NA CMW-7 10/11/2011 6.6 23.43 18 491 0.87 -70 135 4.48 NM <0.5 <5 45.8 NA 380 <0.08 35.3 NA NA <5 NA 9920 <5 5600 <5 <0.2 <10 NA NA 16.4 <0.1 285 NA CMW-7 DUP 10/11/2011 6.6 23.43 18 491 0.87 -70 135 4.48 NM <0.5 <5 43.9 NA 370 <0.08 35.8 NA NA <5 NA 9180 <5 5640 <5 <0.2 <10 NA NA 17.9 <0.1 279 NA CMW-7 03/13/2012 6.6 22.99 18 463 0.48 -68 137 8 NM <0.5 <5 44.4 NA 403 <0.08 1 37.1 NA NA <5 NA 8730 <5 4550 <5 0.23 <10 NA NA 73.4 1 <0.1 255 NA CMW-7 06/12/2012 6.7 22.54 18 566 1.03 -74 131 18.2 NM <0.5 <5 53 NA 361 <0.08 38.7 NA NA <5 NA 1 13200 <5 6030 <5 <0.02 <10 NA NA 99.2 <0.1 327 NA CMW-7 10/15/2012 6.7 22.92 18 581 0.5 -90 115 8.97 NM <0.5 <5 60.9 NA 412 <0.08 45.2 NA NA <5 NA 12500 <5 6300 <5 <0.02 <10 NA NA 117 <0.1 333 NA CMW-7 03/04/2013 6.6 22.18 14 569 0.27 -61 144 22.8 NM <1 1.69 55 NA 370 <1 39 NA NA <5 NA 12400 <1 5800 <5 0.035 <1 NA NA 88 <0.2 340 NA CMW-7 06/03/2013 6.5 22.64 19 578 0.73 -103 102 47.9 NM <1 1.88 57 NA 369 <1 45 NA NA <5 NA 16000 <1 6380 <5 <0.023 <1 NA NA 110 <0.2 330 NA CMW-7 10/09/2013 6.8 23.15 17 742 0.2 -63 142 17.5 NM <1 1.47 77 NA 404 <1 46 NA NA <5 NA 19200 <1 9040 <5 <0.023 <1 NA NA 170 <0.2 440 NA CMW-7 03/13/2014 5.1 21.43 10 72 1.4 309 514 14 NM <1 <1 58 NA <50 <1 4.9 NA NA <5 NA 817 <1 655 <5 0.03 <1 NA NA 10 <0.2 79 NA CMW-7 10/14/2014 6.4 23.76 19 630 0.22 -79 127 3.51 NM <1 1.24 66 NA 382 <1 44 NA NA <5 NA 18700 <1 8510 <5 0.31 <1 NA NA 130 <0.2 360 NA CMW-7 03/04/2015 5.1 21.62 17 67 0.16 139 344 29 NM <1 <1 59 NA <50 <1 3.2 NA NA <5 NA 2460 <1 770 <5 <0.023 <1 NA NA 10 <0.2 67 NA CMW-7 06/09/2015 5.6 23.54 19 282 0.38 -131 75 9.1 NM <1 1.1 162 <1 98 <1 22 NA NA <5 16.5 10300 <1 2210 <5 <0.1 <1 32.4 NA 72 <0.2 180 NA CMW-7 10/07/2015 5.9 22.86 19 661 0.42 -14 191 2.35 NM <1 <1 266 <1 305 <1 33 NA NA <5 33.3 18900 <1 5460 7 0.57 <1 67.5 280 180 <0.2 370 1.25 CMW-7 12/03/2015 5.3 20.90 14 55 0.3 -19 186 17.9 2 <1 <1 65 <1 <50 <1 2.9 <0.03 NA 1.04 4.48 2720 1.38 601 2.74 NA <1 3.84 41 3.1 <0.2 85 7.93 CMW-7 01/07/2016 5.5 19.87 12 68 0.6 20 225 8.1 2 <1 <1 61 <1 <50 <1 3.2 <0.03 NA <1 4.11 2790 <1 660 1.99 NA <1 4.59 43 6.4 <0.2 71 3.54 CMW-7 03/01/2016 5.3 20.20 17 84 0.37 61 1 266 6.6 2 <1 <1 67 <1 <50 <1 4.1 1 NA NA <5 1 5.97 2870 <1 1 853 <5 1 <0.5 <1 5.3 46 7.9 <0.2 52 1.59 CMW-7 06/01/2016 5.3 21.49 19 63 0.24 170 375 9.87 NM <1 <1 76 <1 <50 <1 2.8 NA NA <5 5.98 685 <1 1010 <5 <0.1 <1 4.39 47 7.5 <0.2 75 1.88 CMW-8 12/17/2010 6.5 7.71 14 532 NM NM NM 38 NM <0.5 <5 198 NA 1070 0.26 15.8 NA NA <5 NA 35200 <5 9770 <5 <0.1 <10 NA NA 129 <0.1 381 NA CMW-8 03/08/2011 6.5 7.05 15 702 0.7 -112 93 8.4 NM <0.5 <5 195 NA 1300 <0.08 14.6 b NA NA <5 NA 41300 <5 18000 <5 <0.1 <10 NA NA 109 <0.1 435 b NA CMW-8 06/02/2011 6.3 8.69 21 597 0.92 -76 129 11.6 NM <0.5 <5 165 NA 1210 <0.08 14.2 NA NA <5 NA 22700 <5 12600 <5 <0.1 <10 NA NA 128 <0.1 366 NA CMW-8 DUP 06/02/2011 6.3 8.69 21 597 0.92 -76 129 11.6 NM <0.5 <5 170 NA 1160 <0.08 14.5 NA NA <5 NA 23100 <5 13100 <5 <0.1 <10 NA NA 122 <0.1 382 NA CMW-8 10/10/2011 6.2 9.12 20 593 1.1 -47 158 17.9 NM <0.5 <5 153 NA 1250 <0.08 14.8 NA NA <5 NA 27900 <5 9910 <5 <0.2 <10 NA NA 28 <0.1 365 NA CMW-8 03/13/2012 6.4 7.14 17 589 0.37 1 -113 1 92 23.9 1 NM <0.5 <5 203 NA 1320 1 <0.08 13.8 1 NA NA <5 NA 38600 1 <5 1 15300 <5 <0.2 <10 NA NA 102 <0.1 408 NA CMW-8 06/12/2012 6.3 8.99 19 674 1.36 -95 110 17.2 NM <0.5 <5 192 NA 1300 <0.08 14.6 NA NA <5 NA 42400 <5 12700 <5 <0.02 <10 NA NA 124 <0.1 418 NA CMW-8 10/16/2012 6.4 9.37 19 662 0.6 -90 115 16.1 NM <0.5 <5 188 NA 1340 <0.08 14.6 NA NA <5 NA 39000 <5 9820 <5 <0.02 <10 NA NA 166 <0.1 401 NA CMW-8 03/05/2013 6.1 7.60 13 744 0.26 -99 106 23.2 NM <1 <1 227 NA 1240 <1 11 NA NA <5 NA 52700 <1 14400 6 <0.023 <1 NA NA 110 <0.2 440 NA CMW-8 06/04/2013 6.3 8.98 19 731 0.46 -79 126 7.8 NM <1 <1 225 NA 1350 <1 12 NA NA <5 NA 49900 <1 14400 <5 0.03 <1 NA NA 120 <0.2 470 NA CMW-8 10/08/2013 6.3 9.30 18 649 0.23 -52 153 9.85 NM <1 <1 151 NA 1210 <1 14 NA NA <5 NA 26100 <1 10100 <5 <0.023 <1 NA NA 130 <0.2 410 NA CMW-8 03/12/2014 6.4 6.24 14 728 0.5 -65 140 18 NM <1 <1 224 NA 1260 <1 13 NA NA <5 NA 50400 <1 15700 7 <0.023 <1 NA NA 130 <0.2 430 NA CMW-8 06/10/2014 6.3 8.82 18 674 0.4 -69 136 9 1 NM <1 <1 201 NA 1160 <1 13 NA NA <5 NA 41800 <1 12500 6 <0.023 <1 NA NA 130 <0.2 470 NA CMW-8 10/14/2014 6.0 9.17 20 604 0.21 -69 137 8.33 NM <1 <1 149 NA 11190 <1 14 NA NA <5 NA 27800 <1 19920 5 <0.023 <1 NA NA 130 <0.2 380 NA CMW-8 03/04/2015 6.4 6.68 15 724 0.16 -84 122 63.7 NM <1 <1 221 NA 1250 <1 14 NA NA <5 NA 49200 <1 13400 6 <0.023 <1 NA NA 130 <0.2 430 NA CMW-8 06/09/2015 6.3 8.92 23 694 0.29 -85 120 22 NM <1 <1 209 <1 1300 <1 14 NA NA <5 3.89 41800 <1 13000 <5 <0.2 <1 38.2 NA 47 <0.2 400 NA CMW-8 06/17/2015 6.3 9.13 20 7 0.25 -182 23 9.73 NM NA NA NA NA NA NA NA NA <0.005 NA NA NA NA NA NA NA NA NA NA NA NA NA NA CMW-8 10/07/2015 6.2 9.08 17 1284 1.4 -47 158 26.5 NM <1 <1 166 <1 1360 <1 14 NA NA <5 4.79 32700 <1 10900 <5 <0.1 <1 37.7 417 130 <0.2 440 0.389 CMW-8 12/02/2015 6.4 7.36 17 720 0.2 -79 126 8.4 7 <1 <1 224 <1 1400 <1 15 <0.03 NA <1 3.1 48900 <1 13800 3.09 NA <1 38 404 140 <0.2 470 0.3 CMW-8 01/06/2016 6.4 6.61 12 702 0.29 -77 128 9.29 1 NM <1 <1 229 <1 1400 1 <1 15 1 <0.03 NA I<1 2.92 49000 <1 13700 2.85 NA <1 37.3 408 140 <0.2 420 0.374 CMW-8 03/02/2016 6.3 6.86 13 698 0.22 -75 130 15.7 NM <1 <1 192 <1 1320 <1 16 NA NA <5 5.48 1 32800 <1 1 12000 <5 <0.5 <1 38 423 140 <0.2 430 1.19 CMW-8 06/01/2016 6.6 8.44 19 759 0.34 86 291 7.46 NM <1 <1 285 <1 1430 <1 16 NA NA <5 1.69 65200 <1 16400 <5 <0.5 <1 39.4 422 140 <0.2 490 0.412 MW-10 09/06/2013 5.6 NM 18 872 0.24 19 NM 80.73 NM <0.34 0.64 j 75.4 NA 978 <0.23 21.2 NA NA 2.6 j NA 3230 0.73 j 9680 5.5 j NA <0.5 33.6 NA 590 <0.15 944 NA MW-10 06/17/2015 5.9 13.92 20 1379 0.66 -85 120 3.57 NM NA NA NA NA NA NA NA NA 0.007 NA NA NA NA NA NA NA NA NA NA NA NA NA NA MW-10 07/01/2015 5.8 13.36 18 1360 0.28 -114 91 3.01 2 <1 <1 29 <1 922 <1 23 NA NA <1 21 2800 <1 12500 3.55 NA <1 34.6 1460 610 <0.2 1100 0.366 MW-10 09/02/2015 5.8 13.95 20 1359 0.73 7 212 1.25 0.5 <1 <1 28 <1 987 <1 23 NA NA <1 20.5 740 <1 13100 3.47 NA <1 34.9 1480 1200 <0.2 1100 0.342 MW-10 12/02/2015 5.9 12.30 16 1412 0.47 69 1 274 4.47 1 1 <1 I <1 30 <1 967 1 <1 24 1 <0.03 NA <1 21.9 4220 <1 13000 3.81 NA <1 35.9 1500 660 1 <0.2 1100 0.949 MW-10 01/07/2016 6.1 10.17 13 971 2.4 164 369 9.8 0 <1 <1 33 <1 752 <1 32 0.087 NA <1 4.42 1 687 <1 2630 2.01 NA 4.94 51 1040 SID <0.2 850 1.4 MW-11 09/03/2013 6.1 13.76 20 389 0.31 -3 NM 8.36 NM <0.34 0.91 j 104 NA 21.3 j <0.23 24.4 NA NA 1.9 j NA 1760 0.13 j 2410 6.6 j NA <0.5 46 NA 215 <0.15 517 NA MW-11 DUP 09/03/2013 NM NM NM NM NM NM NM NM NM <0.34 0.98 j 103 NA 21.5 j <0.23 25.1 NA NA <1.6 NA 1780 0.13 j 2300 5.8 j NA <0.5 46.4 NA 229 <0.15 512 NA MW-11 07/01/2015 6.2 13.34 21 815 0.18 -148 57 4.65 2 <1 <1 59 <1 <50 <1 22 NA NA <1 1.03 3810 <1 912 4.23 NA <1 48.5 535 200 <0.2 550 0.867 MW-11 12/01/2015 6.3 12.04 17 865 0.11 -35 170 2.63 2 <1 1.64 66 <1 <50 <1 24 <0.03 NA <1 1.22 6810 <1 1180 3.89 NA <1 48.4 531 160 <0.2 520 1.17 MW-11 01/07/2016 6.7 10.00 16 823 0.2 -86 119 4.4 NM <1 1.23 64 <1 <50 <1 27 <0.03 NA <1 <1 5750 <1 1350 3.3 NA <1 49.8 531 1 170 <0.2 540 1.13 MW-12 09/04/2013 6.6 NM 21 546 0.12 -52 NM 34.64 NM 0.34 j 1.7 j 66.5 NA 568 1 <0.23 53.4 1 NA NA <1.6 NA 1570 0.21 j 2690 <1.5 NA <0.5 130 NA 268 <0.15 671 NA MW-12 06/11/2015 6.8 12.58 23 1155 0.35 -139 66 3.75 NM NA NA NA NA NA NA NA NA <0.006 NA NA NA NA NA NA NA NA NA NA NA NA NA NA MW-12 06/30/2015 6.7 12.46 22 1187 0.24 -165 41 2.1 0.5 <1 <1 55 <1 448 <1 59 NA NA <1 2.43 1 456 <1 843 <1 NA <1 165 257 260 <0.2 740 <0.3 MW-12 12/01/2015 6.9 11.85 17 1259 0.3 -64 141 1 0.5 <1 <1 61 <1 284 <1 68 <0.03 NA <1 2.61 373 <1 977 <1 NA <1 186 274 250 <0.2 750 0.443 MW-12 01/05/2016 7.1 10.05 12 1070 0.67 52 257 0.9 0 <1 <1 52 <1 643 <1 57 <0.03 NA <1 1.59 84 <1 785 1.4 NA <1 157 237 250 <0.2 680 1.28 MW-12 03/01/2016 6.7 10.38 15 1286 0.56 156 361 8.6 0 <1 <1 58 <1 139 <1 73 <0.03 NA <1 1.68 348 <1 884 <1 NA <1 21.3 264 270 <0.2 800 1.43 MW-12 06/02/2016 6.8 12.05 18 1321 0.2 C 23 228 6.18 0 <1 <1 62 <1 54 <1 74 <0.03 NA <1 3.06 265 <1 787 <1 NA <1 220 277 260 <0.2 810 0.822 MW-13 09/03/2013 5.7 11.54 20 157 0.09 71 NM 4.13 NM <0.34 <0.42 86 NA 171 <0.23 31.6 NA NA <1.6 NA 154 j <0.085 582 5.2 j NA <0.5 29.6 NA 94.00001 <0.15 234 NA MW-13 DUP 09/03/2013 NM NM NM NM NM NM NM NM NM <0.34 <0.42 84.3 NA 162 <0.23 31.6 NA NA <1.6 NA 141 j <0.085 578 4.5 j NA <0.5 28.8 NA 90.2 1 <0.15 244 NA P:\Duke Energy Progress. 1026\103. Cape Fear Ash Basin GW Assessment\19.EG_CSASUP\Tables\Table 1-2 Surficial GW 2L_IMAC Exceedances.xlsx Page 4 of 6 TABLE 1-2 SURFICIAL GROUNDWATER EXCEEDANCES CAPE FEAR STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, MONCURE, NC Analytical Parameter pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Barium Beryllium Boron Cadmium Chloride Chromium (VI) Chromium (VI) Speciation Chromium Cobalt Iron Lead Manganese Nickel Nitrate Selenium Sodium Strontium Sulfate Thallium Total Dissolved Solids Vanadium Reporting Units S.U. ft Deg C uos /cm mg/I mV mV NTUs mg/I ug/I ug/I ug/I ug/I ug/I ug/I mg/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I mg/I ug/I mg/I ug/I mg/I ug/I mg/I ug/I 15A NCAC 02L Standard 6.5-8.5 NE NE NE NE NE NE NE NE 1* 10 700 4* 700 2 250 0.07^ 0.07^ 10 1* 300 15 50 100 10 20 NE NE 250 0.2* Soo 0.3* Sample ID Sample Collection Date Field Parameters Analytical Results MW-13 06/29/2015 5.8 11.64 18 432 0.33 136 341 2.88 0.5 <1 <1 102 <1 319 <1 28 NA NA <1 1.46 248 <1 820 3.31 NA <1 33.4 223 91 0.297 270 1.07 MW-13 12/01/2015 5.3 6.07 16 168 0.99 240 445 7.53 0 <1 <1 61 <1 <50 <1 13 0.1 NA <1 <1 287 <1 205 2.77 NA <1 11.5 ill 37 <0.2 120 1.22 MW-13 01/07/2016 5.6 4.83 14 184 0.5 278 483 1.95 0 <1 <1 62 <1 <50 <1 18 0.075 NA <1 <1 68 <1 232 3.55 NA <1 13.9 117 44 <0.2 150 0.472 MW-17SL 03/19/2015 6.0 7.23 14 1189 0.29 -50 155 4.76 6.5 <1 <1 126 <1 <50 <1 17 NA NA <1 6.76 175000 <1 7380 1.58 NA <1 41.3 389 570 <0.2 900 0.919 MW-17SL 06/10/2015 5.7 9.49 20 738 0.29 -61 144 2.27 NM NA NA NA NA NA NA NA NA 0.1 NA NA NA NA NA NA NA NA NA NA NA NA NA NA MW-17SL 09/01/2015 5.8 10.41 18 762 0.2 -66 139 1 2.5 <1 <1 80 <1 <50 <1 12 NA NA <1 <1 68400 <1 5750 <1 NA <1 39.3 437 290 <0.2 580 0.667 MW-17SL 12/01/2015 5.6 7.05 14 365 0.15 -29 176 1 4.65 3 <1 <1 78 <1 <50 1 <1 13 1 <0.03 NA I<1 <1 94200 <1 1 6860 <1 NA <1 25.5 1 447 350 <0.2 630 1 0.4 MW-17SL 01/05/2016 5.8 6.52 8 742 0.3 81 286 2.11 NM I <1 <1 65 <1 <50 <1 14 <0.03 NA <1 <1 74600 <1 5950 <1 NA <1 28.9 566 280 <0.2 510 0.371 MW-17SU 03/19/2015 5.0 8.15 13 1129 0.33 63 268 4.46 2.5 <1 <1 42 1.3 <50 <1 38 NA NA <1 241 2620 <1 45500 59 NA <1 45.2 801 710 <0.2 910 0.381 MW-17SU 06/10/2015 5.7 10.32 21 755 0.5 -190 15 1.74 NM NA NA NA NA NA NA NA NA 0.058 NA NA NA NA NA NA NA NA NA NA NA NA NA NA MW-17SU 09/01/2015 5.1 10.99 21 1183 0.1 4 209 1 4 <1 1.06 40 1.37 <50 <1 37 NA NA <1 244 12400 <1 54400 53.5 NA <1 45.9 786 620 <0.2 960 2.79 MW-17SU 12/01/2015 5.3 7.67 15 1171 0.16 56 261 4.46 4 <1 <1 31 1.23 <50 <1 37 <0.03 NA <1 252 12500 <1 50300 56.4 NA <1 45.7 748 550 0.32 920 1.63 MW-17SU 01/05/2016 5.2 7.48 13 1142 0.2 64 269 9.65 NM <1 <1 28 <1 1 <50 <1 40 <0.03 NA <1 184 17200 <1 49400 1 42.7 NA <1 45.1 733 600 <0.2 980 1.34 MW-18S 06/03/2015 7.1 5.00 17 725 1.68 -10 195 2.99 1 NM <1 I <1 10 <1 180 1 <1 29 NA NA <1 I <1 288 1 <1 137 <1 NA <1 121 1 93 180 <0.2 450 1 1.63 MW-185 09/01/2015 6.8 4.36 22 839 0.34 1 -24 1 181 6.13 0.5 <1 <1 13 <1 133 <1 37 NA NA <1 3.94 466 <1 1320 1.25 NA <1 140 90 190 <0.2 490 0.496 MW-18S 12/01/2015 7.0 3.03 14 850 2.5 19 224 1.72 NM <1 <1 13 <1 98 <1 46 <0.03 M1 NA <1 3.97 206 <1 1630 <1 NA <1 144 83 200 0.256 510 1.33 MW-185 01/06/2016 6.9 2.79 12 813 1.79 15 220 0.2 NM <1 <1 10 <1 119 <1 49 <0.03 NA 1.19 3.22 211 <1 928 1.3 NA <1 144 88 210 <0.2 450 1.04 MW-19S 03/11/2015 5.3 4.50 15 66 7.05 164 369 19.6 0 <1 <1 47 <1 <50 <1 15 NA NA <1 <1 486 <1 27 <1 NA <1 7.09 37 2.6 <0.2 54 0.81 MW-19S 12/03/2015 5.0 4.62 14 62 5.1 201 406 1.2 NM <1 <1 35 <1 <50 <1 14 0.081 NA <1 <1 57 <1 1 24 <1 NA <1 6.63 30 2.4 0.332 <25 <0.3 MW-195 01/06/2016 6.0 4.46 12 71 6.9 235 440 1.19 NM <1 <1 34 <1 <50 <1 13 0.088 NA <1 <1 62 <1 20 <1 I NA <1 1 6.01 28 2.8 1 0.347 28 <0.3 MW-20S 05/21/2015 6.3 9.86 16 474 0.14 -24 181 4.98 1 NM <1 I <1 163 <1 <50 1 <1 29 NA NA <1 I <1 4270 <1 1210 <1 NA <1 38.4 263 52 <0.2 320 1 1.03 MW-20S 06/11/2015 6.4 11.57 18 478 0.58 1 -87 1 118 1.5 NM NA NA NA NA NA NA NA NA 0.018 NA NA NA NA NA NA NA NA NA NA NA NA NA NA MW-20S 09/01/2015 6.3 14.02 18 691 0.37 -130 75 1.95 1.5 <1 <1 163 <1 <50 <1 32 NA NA <1 <1 5270 <1 1250 <1 NA <1 37.4 282 56 <0.2 340 0.648 MW-20S 12/01/2015 6.2 9.63 15 535 0.3 -33 172 3.83 3.5 <1 <1 167 <1 <50 <1 34 <0.03 NA <1 <1 5140 <1 1270 <1 NA <1 34.4 304 69 <0.2 320 0.879 MW-20S 01/06/2016 6.3 6.28 14 462 0.28 86 291 9.39 NM <1 <1 154 <1 <50 <1 36 <0.03 NA <1 1.86 2230 <1 1170 1.77 NA <1 41.8 252 55 <0.2 270 0.334 MW-21SL 05/07/2015 5.7 10.03 17 1476 0.22 80 285 1.24 NM <1 <1 30 <1 60 <1 23 NA NA <1 18.7 731 1 <1 1 2430 7.9 NA <1 60.9 627 930 <0.2 1300 0.313 MW-21SL 06/10/2015 5.8 12.03 22 1194 0.42 -21 184 0.31 NM NA NA NA NA NA NA NA NA 0.052 NA NA NA NA NA NA NA NA NA NA NA NA NA NA MW-21SL 09/01/2015 5.8 13.58 24 1483 3.2 28 233 1 2 1.5 <1 <1 25 <1 135 1 <1 23 1 NA NA 7.12 8.98 1740 <1 2080 10.6 NA <1 58.6 617 810 <0.2 1300 0.532 MW-21SL 12/01/2015 5.8 9.62 15 1435 0.4 -48 1 157 1 0.5 <1 <1 19 <1 94 <1 23 <0.03 NA <1 7.26 612 <1 1820 8.37 NA <1 54.9 599 790 <0.2 1200 <0.3 MW-21SL 01/05/2016 5.9 9.62 11 1 1534 0.5 -92 113 1.2 1.5 <1 <1 18 <1 106 <1 25 <0.03 NA <1 10.9 1030 <1 2170 8.77 NA <1 49.2 653 870 <0.2 1300 <0.3 MW-21SU 05/07/2015 4.1 10.21 22 497 3.96 155 360 2.51 NM <1 4.15 27 8.94 <50 <1 5.5 NA NA <1 180 181 <1 9720 49.1 NA 1.98 9.27 526 300 0.335 360 <0.3 MW-21SU 06/10/2015 4.1 11.57 28 546 0.78 154 359 1.53 NM NA NA NA NA NA NA NA NA 0.19 NA NA NA NA NA NA NA NA NA NA NA NA NA NA MW-21SU 09/01/2015 4.1 12.99 24 526 3.1 427 632 2 0.25 <1 2.03 21 8.73 <50 <1 5.8 NA NA <1 167 238 1 <1 9960 45.4 NA 1 1.01 18.3 1 522 340 1 <0.2 400 <0.3 MW-21SU 12/01/2015 4.1 10.05 14 552 4 112 317 1 1 ND <1 2.75 23 10.5 <50 <1 6.2 <0.03 NA <1 170 55 <1 9790 49.1 NA <1 18.4 547 370 <0.2 390 <0.3 MW-21SU 01/05/2016 4.3 10.05 12 508 3.1 401 606 1.83 0 <1 3.35 18 8.85 <50 <1 1 5.8 <0.03 NA <1 160 186 <1 9310 48 NA <1 16.9 546 290 <0.2 410 0.334 MW-22S 07/12/2016 6.8 8.61 22 745 1 1.98 14 1 219 8.45 4.5 <1 1.23 117 <1 238 <1 24 <0.03 NA <1 21.1 51100 <1 8130 <1 NA <1 32.9 486 310 <0.2 300 0.732 MW-23S 07/12/2016 8.3 8.23 20 593 1.12 121 326 6.35 0 <1 <1 56 <1 3000 <1 23 14.8 NA 19.5 5.44 46 <1 1080 2.8 NA 1.27 27.6 422 210 <0.2 87 6.42 PZ-1 03/07/2007 6.3 1.71 62 1280 NM NM NM NM NM <0.58 <2 38.6 <0.7 394 <0.5 18 NA NA <2 NA 14500 <2 9550 9.6 0.01 <2 97.9 NA 420 <0.044 890 NA PZ-1 12/19/2007 6.2 3.56 63 997 NM NM NM NM NM 1 0.55 1.1 33.6 0.062 381 0.066 21.2 NA NA 0.11 NA 23500 0.38 5350 7.1 <0.05 0.66 NA NA 448 0.12 815 NA PZ-1 04/30/2008 6.4 3.05 61 952 NM NM NM NM NM 0.83 0.96 1 66.1 0.34 473 0.12 23.9 NA NA 3.6 NA 46600 2.7 4300 6.4 <0.05 1 1.8 NA NA 434 <0.068 960 NA PZ-1 12/08/2008 6.3 3.01 60 619 NM NM NM NM NM 0.17 1.6 57.9 0.21 576 0.10 22 NA NA 3 NA 1 42400 2 4880 8.2 <0.05 3.2 NA NA 360 0.027 787 NA PZ-1 06/03/2009 5.3 3.76 65 779 NM NM NM NM NM 2.1 <1 39 <1 586 <1 25 NA NA 8.7 NA 30200 <1 3050 9.4 <0.05 <5 NA NA 390 <1 920 NA PZ-1 10/19/2009 6.0 3.80 65 905 NM NM NM NM NM 3.7 <1 31.7 <1 660 <1 20 NA NA <2 NA 27100 <1 4250 4.4 <0.05 <5 NA NA 320 <1 787 NA PZ-1 04/22/2010 6.3 3.45 60 799 NM NM NM NM NM <10 <10 42 <4 590 <2 21 NA NA <5 NA 28000 14 4100 <40 <0.02 <10 NA NA 350 <50 360 NA PZ-1 09/10/2013 6.2 1 4.25 21 708 0.1 -23 NM 17 NM <0.34 0.46j 31 NA 657 0.97 21.7 NA NA <1.6 NA 17200 0.098j 4270 5.4j NA <0.5 66.3 NA 290 <0.15 659 NA PZ-1 08/06/2015 6.1 4.88 22 881 0.15 -35 170 8.1 NM <1 <1 30 <1 650 <1 19 NA NA <1 4.35 14700 <1 4250 4.46 NA <1 68.1 1 273 260 <0.2 650 0.604 PZ-1 12/03/2015 6.3 1.38 13 793 0.8 -45 160 17.9 2 <1 <1 33 1 <1 628 1 <1 21 <0.03 NA I <1 4.04 15600 <1 4300 4.79 1 NA I <1 67.4 275 260 <0.2 620 0.881 PZ-1 01/07/2016 6.2 1.25 14 923 0.11 -27 178 13.74 0 <1 <1 34 <1 674 <1 21 <0.03 NA <1 3.81 16000 1 <1 4410 4.73 NA <1 61.8 279 1 260 <0.2 620 0.454 PZ-2 03/07/2007 7.4 4.85 60 940 NM NM NM NM NM <0.58 <2 34 <0.7 5240 <0.5 18 NA NA <2 NA 411 <2 4440 3.1 0.01 <2 111 NA 290 <0.044 600 NA PZ-2 12/19/2007 6.4 4.53 60 662 NM NM NM NM NM <0.3 0.77 27.9 <0.051 4620 0.081 20.2 NA NA <0.059 NA 555 0.048 3310 4.2 <0.05 0.7 NA NA 267 0.046 550 NA PZ-2 04/30/2008 7.7 4.76 58 629 NM NM NM NM NM <0.4 2.1 32 0.12 4380 0.07 25.3 NA NA 0.49 NA 10200 1.4 3180 4 <0.05 2.6 NA NA 289 <0.068 685 NA PZ-2 12/08/2008 6.7 4.53 60 508 NM NM NM I NM NM <0.017 1.6 27.9 <0.051 4740 <0.028 22 NA NA 0.5 NA 954 0.082 2740 4.9 <0.05 4.9 NA NA 230 <0.011 534 NA PZ-2 06/03/2009 5.6 5.13 66 671 NM NM NM NM NM <2 <1 25.7 <1 4610 <1 24 1NA NA <2 NA 1510 <1 2520 4 <0.05 <5 NA NA 240 <1 663 NA PZ-2 10/19/2009 6.3 4.90 65 605 NM NM NM NM NM 1 <2 <1 25.7 <1 1 4560 <1 21 NA NA <2 NA 1330 <1 2460 4 <0.05 1 <5 NA NA 210 <1 528 NA PZ-2 04/22/2010 6.6 5.05 59 540 NM NM NM NM NM <10 <10 <25 <4 4300 <2 22 NA NA <5 NA 1100 1 <10 2400 <40 0.065 <10 NA NA 220 <50 53 NA PZ-2 09/04/2013 6.3 NM 19 472 0.36 -54 NM 897 NM <0.34 0.51j 26.3 NA 3810 <0.23 21.1 NA NA 1.6j NA 881 <0.085 2580 3.6j NA <0.5 68.60001 NA 187 <0.15 426 NA PZ-2 08/06/2015 6.3 6.33 21 632 0.33 55 260 4.08 NM <1 <1 53 <1 3810 <1 19 NA NA <1 8.24 1140 <1 2440 8.58 NA <1 67.5 319 180 <0.2 430 1.66 PZ-2 CUP 08/06/2015 6.3 6.33 21 632 0.33 55 260 4.08 NM <1 <1 53 <1 3830 <1 19 NA NA <1 7.8 763 <1 2440 6.02 NA <1 67.1 322 180 <0.2 450 1.27 PZ-2 09/02/2015 6.4 6.27 23 662 0.5 51 256 4 0.25 <1 <1 53 <1 4320 <1 20 NA 0.03j <1 8.43 586 <1 2600 3.63 NA <1 72.6 340 200 <0.2 460 0.982 PZ-2 12/01/2015 6.3 4.39 16 526 0.53 179 384 6.16 0 <1 I <1 50 <1 2090 1 <1 25 1 <0.03 NA <1 2.62 370 <1 1340 2.78 NA <1 50.1 326 120 <0.2 340 3.51 PZ-2 01/07/2016 6.5 4.60 12 449 0.9 122 327 2.3 0 <1 <1 45 <1 1890 <1 17 <0.03 NA <1 1.23 276 <1 544 1.83 NA <1 42.7 297 110 <0.2 290 3.12 PZ-3S 03/07/2007 7.9 2.68 55 799 NM NM NM NM NM <0.58 <2 27.7 <0.7 1350 <0.5 45 NA NA <2 NA 2630 <2 114 <2 <0.007 <2 158 NA 170 <0.044 510 NA PZ-3S 12/19/2007 7.7 3.15 60 676 NM NM NM NM NM <0.3 0.88 13.4 <0.051 1280 0.11 54.8 NA NA <0.059 NA 87.2 0.09 60.1 3.9 <0.05 0.84 NA NA 177 0.011 SIG NA P:\Duke Energy Progress. 1026\103. Cape Fear Ash Basin GW Assessment\19.EG_CSASUP\Tables\Table 1-2 Surficial GW 2L_IMAC Exceedances.xlsx Page 5 of 6 TABLE 1-2 SURFICIAL GROUNDWATER EXCEEDANCES CAPE FEAR STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, MONCURE, NC Analytical Parameter pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Barium Beryllium Boron Cadmium Chloride Chromium (VI) Chromium (VI) Speciation Chromium Cobalt Iron Lead Manganese Nickel Nitrate Selenium Sodium Strontium Sulfate Thallium Total Dissolved Solids Vanadium Reporting Units S.U. ft Deg C uos /cm mg/I my mV NTUs mg/I ug/I ug/I ug/I ug/I ug/I ug/I mg/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I mg/I ug/I mg/I ug/I mg/I ug/I mg/I ug/I 15A NCAC 02L Standard 6.5-8.5 NE NE NE NE NE NE NE NE 1* 10 700 4* 700 2 250 0.07^ 0.07^ 10 1* 300 15 50 100 10 20 NE NE 250 0.2* Soo 0.3* Sample ID Sample Collection Date Field Parameters Analytical Results PZ-3S 04/30/2008 7.8 2.76 58 657 NM NM NM NM NM <0.4 0.82 11.7 <0.086 1160 0.026 55.2 NA NA 0.18 1 NA 70.2 1 0.074 95.2 0.59 <0.05 1 3.1 NA NA 183 <0.068 515 NA PZ-3S 12/08/2008 7.8 2.82 58 521 NM NM NM NM NM <0.017 1.8 13.7 <0.051 1420 <0.028 45 NA NA 0.48 NA 331 0.17 46 1.3 <0.05 5.8 NA NA 160 <0.011 502 NA PZ-3S 06/03/2009 6.9 3.16 70 789 NM NM NM NM NM <2 <1 10.9 <1 1360 <1 56 NA NA <2 NA <100 <1 49.5 <1 0.57 5 NA NA 180 <1 519 NA PZ-3S 10/19/2009 7.6 3.53 67 708 NM NM NM NM NM <2 <1 11.3 <1 1510 <1 52 NA NA <2 NA <100 <1 33.2 1.1 <0.25 <5 NA NA 170 <1 SID NA PZ-3S 04/22/2010 7.8 2.80 58 631 NM NM NM NM NM <10 <10 <25 <4 1400 <2 54 NA NA <5 NA 180 <10 56 <40 0.071 <10 NA NA 180 <50 32 NA PZ-3S 09/04/2013 7.6 NM 22 609 0.08 -56 NM 3 NM <0.34 <0.42 11.1 NA 2430 <0.23 53.2 NA NA <1.6 NA 107 j <0.085 32.8 <1.5 NA <0.5 130 NA 182 <0.15 547 NA PZ-3S 08/05/2015 7.4 5.84 23 918 0.18 1 67 272 4.96 1 NM <1 <1 15 <1 2440 <1 67 1NA NA <1 <1 255 <1 1 182 <1 NA <1 1 142 196 170 <0.2 590 1.97 PZ-3S 12/03/2015 7.3 1 4.38 16 928 1.42 159 364 9.28 NM <1 <1 15 <1 2500 1 <1 65 <0.03 NA <1 <1 294 <1 90 <1 NA <1 138 200 170 <0.2 570 3.54 PZ-3S 01/07/2016 7.4 3.94 14 1005 1.68 63 268 4.98 0 <1 <1 15 <1 2500 <1 72 <0.03 NA <1 <1 194 <1 91 <1 NA <1 151 216 180 <0.2 580 1 2.01 PZ-4 03/07/2007 7.2 7.81 58 1350 NM NM NM NM NM <0.58 <2 27.5 <0.7 70.8 <0.5 110 NA NA <2 NA 881 <2 117 <2 <0.007 3.1 212 NA 260 <0.044 840 NA PZ-4 12/19/2007 7.0 8.16 61 871 NM NM NM NM NM <0.3 0.76 19.1 <0.051 254 0.12 86.1 NA NA <0.059 NA 274 0.071 57.3 1 <0.05 0.93 NA NA 218 0.01 643 NA PZ-4 04/30/2008 7.6 8.12 58 724 NM NM NM NM NM <0.4 0.85 19.3 <0.086 1090 0.051 72.6 NA NA 0.41 NA 677 0.22 33.5 1.1 <0.05 4.4 NA NA 207 <0.068 584 NA PZ-4 12/08/2008 6.9 8.14 58 548 NM NM NM NM NM <0.017 2.2 24.5 <0.051 1280 <0.028 68 NA NA 0.58 NA 1 695 0.27 46.3 2.3 <0.05 7.8 NA NA 180 <0.011 574 NA PZ-4 06/03/2009 5.8 8.51 63 788 NM NM NM NM NM <2 <1 31.9 <1 1510 1.4 68 1 NA NA 2.3 NA 1450 1 1.6 1 71.4 2.5 <0.05 5.8 1 NA NA 190 <1 670 NA PZ-4 10/19/2009 6.7 1 8.69 62 743 NM NM NM NM NM <2 I <1 22.7 <1 1500 1 <1 70 NA NA 2.5 NA 566 <1 61.7 1.7 <0.05 <5 NA NA 190 <1 598 NA PZ-4 04/22/2010 7.0 8.31 56 606 NM NM NM NM NM <10 <10 <25 <4 1800 <2 54 NA NA <5 NA 410 <10 75 <40 0,098 <10 NA NA 180 <50 56 NA PZ-4 09/06/2013 6.7 NM 19 544 0.16 -2 NM 1.86 NM <0.34 <0.42 21.1 NA 2080 <0.23 57 NA NA <1.6 NA 46.4j <0.085 111 <1.5 NA <0.5 91.4 NA 170 <0.15 475 NA PZ-4 08/05/2015 6.4 9.33 22 747 0.34 -85 120 4.96 NM <1 <1 36 <1 1440 <1 55 NA NA <1 1.31 1290 <1 519 9.7 NA <1 88.1 341 150 <0.2 470 0.979 PZ-4 12/03/2015 6.0 8.14 15 533 0.15 -59 146 3.34 3.5 <1 1.15 35 <1 718 <1 30 <0.03 NA <1 7.61 8160 <1 1580 3.97 NA <1 52.6 243 91 <0.2 320 2.24 PZ-4 01/07/2016 6.3 8.03 14 631 0.18 -3 202 3.99 0 <1 <1 42 <1 1030 <1 41 <0.03 NA <1 5 3890 <1 1350 1 4.2 NA <1 58.3 290 120 <0.2 380 1.08 PZ-5 03/07/2007 6.2 0.72 56 769 NM NM NM NM NM <0.58 <2 777 0.9 3500 <0.5 24 NA NA 101 NA 114000 53.3 5140 84.8 <0.007 <2 74.3 NA 280 1 0.478 570 NA PZ-5 12/19/2007 5.8 0.50 59 612 NM NM NM NM NM <0.3 0.81 27.1 <0.051 3660 0.23 25.1 NA NA <0.059 NA 144 0.076 1640 8.7 <0.05 1.1 NA NA 288 0.014 514 NA PZ-5 04/30/2008 6.9 0.32 60 628 NM NM NM NM NM <0.4 0.81 26.1 <0.086 3600 1 0.057 28.3 NA NA 0.16 NA 100 0.079 1920 8.9 <0.05 3.7 NA NA 318 <0.068 743 NA PZ-5 12/08/2008 6.1 0.21 56 479 NM NM NM NM NM <0.017 2 28.8 0.06 4340 0.082 26 NA NA 0.61 NA 354 0.26 2140 10.4 <0.05 7.1 NA NA 300 <0.011 550 NA PZ-5 06/03/2009 5.3 0.20 68 721 NM NM NM NM NM <2 <1 24.2 <1 4540 <1 29 NA NA <2 NA <100 <1 2160 7.3 <0.05 5.9 NA NA 340 <1 757 NA PZ-5 10/19/2009 6.0 0.40 67 663 NM NM NM NM NM <2 <1 25.8 <1 4860 <1 24 NA NA 2.3 NA <100 <1 1 2280 7.8 <0.05 <5 I NA NA 290 <1 615 NA PZ-5 04/22/2010 6.1 0.50 59 564 NM NM NM NM NM <10 <10 <25 <4 4100 <2 25 1 NA NA <5 NA <100 <10 2600 <40 1 0.061 <10 NA NA 290 <50 32 NA PZ-5 09/10/2013 5.8 1.24 23 511 0.03 70 1 NM 6.4 NM <0.34 1 <0.42 23.6 NA 4860 0.23j 33 NA NA <1.6 NA 227 0.12j 2390 7.4j NA <0.5 54.7 NA 269 1 <0.15 493 NA PZ-5 08/05/2015 5.4 2.13 24 692 0.68 214 419 4.1 NM <1 <1 26 <1 4910 <1 28 NA NA <1 8.24 200 <1 2990 6.53 NA <1 58.6 358 270 1 <0.2 510 0.535 PZ-5 03/02/2016 5.8 1.53 13 1 686 1.91 103 308 9.2 1 <1 <1 23 <1 1 4520 1 <1 25 <0.03 NA <1 14.3 1400 <1 2930 9.34 NA <1 46.1 354 270 <0.2 490 0.81 PZ-5 06/02/2016 5.8 1.83 20 645 0.27 C 95 NM 3.42 0 <1 <1 22 <1 4860 <1 25 <0.03 NA <1 6.33 316 <1 2750 5.74 NA <1 47.2 344 250 <0.2 460 0.891 PZ-9 09/OS/2013 2.1 8.22 18 NM 0.33 128 NM 4.52 NM <0.34 0.65 j 160 NA <8.4 <0.23 32.5 NA NA <1.6 NA 920 1.4 257 21.9 NA <0.5 12.2 NA 5.4 <0.15 87 NA PZ-9 08/06/2015 4.6 12.10 19 358 0.2 370 575 13 NM <1 <1 44 <1 103 <1 29 NA NA 1.91 28.4 1170 <1 627 41.9 NA 96.1 30.1 671 110 0.574 240 0.811 Prepared by: BER Checked by: CIS Notes: 0 - Bold highlighted concentration indicates exceedance of the 15A NCAC 02L Standard, Appendix 2, April 1, 2013 ug/I = microgram per liter Deg C = Degree. Celsius Temp = Temperature mg/I = milligrams per liter ft = feet ND = Not detected umhos/cm = micro mhos per centimeter DO = Dissolved Oxygen NM = Not measured NTU = nephelometric turbidity unit ORP = Oxidation Reduction Potential NA = Not analyzed S.U. = Standard Unit Spec Cond = Specific Conductance NE = Not established mV = millivolts Eh = Redox potential Cup = Duplicate < = concentration not detected at or above 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. MI = 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. NI = Sample inadvertently collected with sample running through the flow cell and should be considered invalid based on possible contamination from the flow cell. P:\Duke Energy Progress. 1026\103. Cape Fear Ash Basin GW Assessment\19.EG_CSASUP\Tables\Table 1-2 Surficial GW 2L_IMAC Exceedances.xlsx Page 6 of 6 TABLE 1-3 BEDROCK GROUNDWATER EXCEEDANCES CAPE FEAR STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, MONCURE, NC Analytical Parameter pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Barium Boron Chromium (VI) Chromium (VI) Speciation Chromium Cobalt Iron Manganese Sodium Strontium Sulfate Thallium Total Dissolved Solids Vanadium Reporting Units S.U. ft Deg C umhos/cm mg/I mV mV NTUs mg/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I mg/I ug/I mg/I ug/I mg/I ug/I 15A NCAC 02L Standard 6.5-8.5 NE NE NE NE NE NE NE NE 1* 10 700 700 0.07^ 0.07^ 10 1* 300 50 NE NE 250 0.2* 500 0.3* Sample ID Sample Collection Date Field Parameters Analytical Results Background BGTMW-4 09/03/2013 NM 17.24 NM NM NM NM NM NM NM NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA BGTMW-4 09/04/2013 7.4 NM 18 160 0.72 49 NM 0.79 NM <0.34 2.9 118 21.2 j NA NA <1.6 NA <43 51.9 21.2 NA 9.400001 <0.15 185 NA BGTMW-4 12/15/2010 10.3 18.38 13 149 NM NM NM 6.2 NM 1.1 6.7 20.6 <50 NA NA <5 NA 148 <5 NA NA 17.2 <0.1 107 NA BGTMW-4 03/07/2011 9.4 17.87 15 217 1.2 -55 150 4.01 NM 0.65 <5 49.5 b <50 NA NA <5 NA 176 10.8 NA NA 18.1 b <0.1 156 b NA BGTMW-4 06/01/2011 9.1 17.30 22 235 1.18 -94 111 9.82 NM 0.6 8.2 65.6 <50 NA NA <5 NA 223 b 27.1 NA NA 22.8 <0.1 178 NA BGTMW-4 10/10/2011 8.0 18.45 20 271 0.55 -11 194 3 NM <0.5 <5 106 <50 NA NA <5 NA 93.3 95.7 NA NA 11.8 <0.1 149 NA BGTMW-4 03/12/2012 7.8 17.35 17 275 0.93 -51 154 6.77 NM <0.5 <5 109 <50 NA NA <5 NA 406 b 130 NA NA 10.6 <0.1 168 NA BGTMW-4 06/11/2012 7.5 17.73 19 289 2.23 -43 162 5.86 NM <0.5 <5 108 <50 NA NA <5 NA 213 99.5 NA NA 11 <0.1 159 NA BGTMW-4 10/15/2012 8.0 18.95 18 289 0.67 58 263 3.89 NM <0.5 <5 122 <50 NA NA <5 NA 234 161 NA NA 11.3 <0.1 156 NA BGTMW-4 03/05/2013 7.8 17.97 13 301 0.39 19 224 9.05 NM <1 1.34 112 <50 NA NA <5 NA 188 136 NA NA 7.3 <0.2 180 NA BGTMW-4 06/03/2013 8.0 17.25 21 299 2.67 155 360 4.85 NM <1 2.56 117 <50 NA NA <5 NA 200 72 NA NA 9.9 <0.2 180 NA BGTMW-4 10/08/2013 7.9 17.88 17 309 0.54 204 409 3.99 NM <1 2.16 121 <50 NA NA <5 NA 148 91 NA NA 7.8 <0.2 190 NA BGTMW-4 03/11/2014 8.0 14.04 17 305 3.4 146 351 0.6 NM <1 1.17 121 <50 NA NA <5 NA 90 142 NA NA 8 <0.2 190 NA BGTMW-4 06/09/2014 8.0 16.20 21 301 2.7 138 343 3.1 NM <1 3.33 119 <50 NA NA <5 NA 53 43 NA NA 9.1 <0.2 190 NA BGTMW-4 10/13/2014 7.4 17.73 18 305 0.26 209 414 0.56 NM <1 2.45 126 <50 NA NA <5 NA 61 110 NA NA 6.1 <0.2 190 NA BGTMW-4 03/04/2015 7.7 15.12 14 321 0.8 48 253 0.46 NM <1 <1 128 <50 NA NA <5 NA 111 172 NA NA 5.7 <0.2 180 NA BGTMW-4 06/08/2015 8.1 16.63 20 310 2.3 -43 162 2.54 NM <1 3.05 129 <50 NA NA <5 <1 57 59 22.1 NA 8.1 <0.2 180 NA BGTMW-4 10/07/2015 7.7 17.34 18 318 0.2 -60 145 1.98 NM <1 1.96 138 <50 NA NA <5 <1 119 132 20.7 301 5.8 <0.2 180 <0.3 BGTMW-4 12/02/2015 7.5 15.58 16 320 0.17 -101 105 0.34 NM <1 1.08 121 <50 <0.03 NA <1 <1 123 168 20.2 286 5.8 <0.2 200 0.381 BGTMW-4 01/06/2016 7.8 14.08 13 301 0.48 -128 77 1.53 0 <1 <1 126 <50 <0.03 NA <1 <1 171 191 20.3 292 5.5 <0.2 170 <0.3 BGTMW-4 03/02/2016 7.7 14.58 16 314 0.5 138 343 5.5 0 <1 1.27 126 <50 <0.03 NA <5 <1 122 146 20.4 286 6.4 <0.2 180 <0.3 BGTMW-4 06/02/2016 8.1 15.97 20 311 2.78 69 274 1.86 NM <1 2.87 127 <50 0.18 NA <5 <1 83 55 21.7 289 7.8 <0.2 190 0.426 MW-9 09/03/2013 NM 13.09 NM NM NM NM NM NM NM NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA MW-9 09/09/2013 6.2 NM 20 549 0.35 50 NM 14.9 NM <0.34 0.7 j 74.7 13.5 j NA NA <1.6 NA 1060 678 55.7 NA 22 <0.15 393 NA MW-9 06/17/2015 5.9 14.26 18 991 0.7 -12 193 2.91 NM NA NA NA NA NA 0.014 NA NA NA NA NA NA NA NA NA NA MW-9 06/30/2015 5.7 14.20 21 1049 0.23 101 306 3.21 1.5 <1 <1 76 <50 NA NA <1 6.7 1800 826 61.4 538 41 <0.2 660 <0.3 MW-9 09/01/2015 6.1 15.48 22 863 0.2 49 254 1.9 2 <1 <1 103 <50 NA NA <1 1.51 2290 814 45.8 490 21 <0.2 560 0.41 MW-9 12/02/2015 5.7 13.64 17 1061 0.5 57 262 1.1 1.5 <1 <1 83 <50 <0.03 NA <1 2.68 4230 789 57.7 534 40 <0.2 530 <0.3 MW-9 01/07/2016 5.8 11.94 12 1069 2.4 200 405 0.4 0.5 <1 <1 66 <50 0.052 NA <1 1.02 406 360 70.2 480 51 <0.2 560 <0.3 MW-9 03/01/2016 5.6 10.45 16 1028 1.48 213 418 3.7 0 <1 <1 46 <50 <0.03 NA <1 <1 201 115 77.7 477 53 <0.2 590 <0.3 MW-9 06/02/2016 5.6 12.14 16 1016 1.15 C 156 361 1.51 0 <1 <1 45 <50 <0.03 NA <1 <1 184 230 75.7 463 42 <0.2 650 0.438 MW-9BR 05/30/2015 7.7 17.46 19 706 0.12 -238 -33 2.1 NM <1 <1 420 <50 NA NA <1 <1 441 829 37.2 677 7.9 <0.2 410 <0.3 MW-9BR 06/17/2015 7.4 18.43 20 714 0.32 -262 -57 1.59 NM NA NA NA NA NA <0.005 NA NA NA NA NA NA NA NA NA NA MW-9BR 09/01/2015 7.3 19.23 21 656 0.2 -128 78 1 0.5 <1 <1 410 <50 NA NA <1 <1 491 905 36.3 642 4.9 <0.2 410 <0.3 MW-9BR 12/02/2015 7.3 15.97 15 639 0.4 -128 77 2.3 1 <1 <1 399 <50 <0.03 NA <1 <1 412 793 37.6 600 1.8 0.489 380 0.372 MW-9BR 01/07/2016 7.6 15.15 11 650 0.7 -116 89 0.7 0.5 <1 <1 414 <50 <0.03 NA <1 <1 427 778 37.2 593 1.6 <0.2 360 <0.3 MW-9BR 03/01/2016 7.4 14.93 1 19 637 0.38 -155 50 2 0 <1 <1 420 <50 <0.03 NA <1 <1 379 770 36.1 596 2.3 <0.2 360 <0.3 P:\Duke Energy Progress.1026\103. Cape Fear Ash Basin GW Assessment\19.EG_CSASUP\Tables\Table 1-3 Bedrock GW 2L_IMAC Exceedances.xlsx Page 1 of 6 TABLE 1-3 BEDROCK GROUNDWATER EXCEEDANCES CAPE FEAR STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, MONCURE, NC Analytical Parameter pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Barium Boron Chromium (VI) Chromium (VI) Speciation Chromium Cobalt Iron Manganese Sodium Strontium Sulfate Thallium Total Dissolved Solids Vanadium Reporting Units S.U. ft Deg C umhos/cm mg/I mV mV NTUs mg/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I mg/I ug/I mg/I ug/I mg/I ug/I 15A NCAC 02L Standard 6.5-8.5 NE NE NE NE NE NE NE NE 1* 10 700 700 0.07^ 0.07^ 10 1* 300 50 NE NE 250 0.2* 500 0.3* Sample ID Sample Collection Date Field Parameters Analytical Results MW-9BR 06/02/2016 7.4 16.05 19 617 1.51 C 77 282 0.63 0 <1 <1 405 <50 <0.03 NA <1 <1 127 724 36.2 601 4 <0.2 360 0.31 MW-15BR 06/01/2015 8.2 10.87 21 410 1.52 -71 134 4.75 NM <1 6.76 429 <50 NA NA <1 <1 <10 72 36.7 501 NA <0.2 NA 1.73 MW-15BR 06/30/2015 7.9 9.62 18 431 0.52 137 342 2.32 0 <1 6.07 398 <50 NA NA <1 <1 31 69 42.9 493 37 <0.2 260 1.82 MW-15BR 09/01/2015 8.1 10.71 23 425 0.65 -141 64 6.46 NM <1 7.84 342 <50 NA NA <1 <1 123 62 52.1 435 54 <0.2 270 1.98 MW-15BR 12/02/2015 8.0 7.95 16 421 0.44 114 319 2.09 0 <1 8.25 335 <50 <0.03 NA <1 <1 45 46 47.8 441 50 <0.2 260 2.32 MW-15BR DUP 12/02/2015 8.0 7.95 16 421 0.44 114 319 2.09 0 <1 6.67 330 <50 <0.03 M1 NA <1 <1 21 53 52.8 443 53 0.399 280 2.26 MW-15BR 01/06/2016 8.2 5.78 10 401 0.45 37 242 1.95 0 <1 6.35 325 <50 <0.03 NA <1 <1 31 58 50.2 438 54 <0.2 240 2.83 MW-15BR 03/02/2016 7.8 6.61 14 422 0.31 -121 84 4.3 NM <1 5.97 299 <50 <0.03 NA <1 <1 26 53 53 409 56 <0.2 260 2.75 MW-15BR 06/02/2016 8.0 7.95 19 403 1.98 C -59 146 4.93 0 <1 6.4 323 <50 0.055 NA <1 <1 49 9 47.6 429 47 <0.2 240 2.37 MW-16BR 05/20/2015 7.7 53.91 16 589 0.17 -149 56 4.83 NM <1 2.5 360 51 NA NA <1 <1 329 326 57.3 505 41 <0.2 340 <0.3 MW-16BR 06/11/2015 7.7 4.80 17 581 0.12 -260 -55 3.93 NM NA NA NA NA NA 0.019 NA NA NA NA NA NA NA NA NA NA MW-16BR 09/01/2015 7.7 6.82 18 673 0.1 -115 90 1 0.25 <1 1.44 468 52 NA NA 4.98 <1 311 248 70.7 713 93 <0.2 410 <0.3 MW-16BR 12/02/2015 7.6 2.50 16 720 0.4 -102 103 4 0.25 <1 1.56 459 53 <0.03 NA <1 <1 401 246 72.5 771 120 <0.2 440 <0.3 MW-16BR 01/07/2016 7.7 1.93 13 700 0.3 -129 76 1 0 <1 <1 437 <50 <0.03 NA <1 <1 303 260 66.6 730 110 <0.2 440 <0.3 MW-16BR 03/02/2016 7.6 1.99 15 695 0.2 -178 27 4.5 NM <1 1.06 419 <50 <0.03 NA <1 <1 350 252 68.7 703 100 <0.2 430 <0.3 MW-16BR 06/02/2016 7.6 2.63 16 659 0.23 C 63 268 1.95 0 <1 <1 412 <50 <0.03 NA <1 <1 296 254 64.7 700 86 <0.2 390 0.304 Bedrock ABMW-lBR 05/08/2015 8.1 28.07 28 639 0.37 -138 67 4 NM <1 5.64 124 891 NA NA <1 <1 173 629 49.4 542 140 <0.2 400 0.867 ABMW-lBR 06/15/2015 11.0 29.55 33 937 0.83 -218 -13 3.93 NM NA NA NA NA NA 10.5 NA NA NA NA NA NA NA NA NA NA ABMW-lBR 08/31/2015 8.6 30.12 23 648 0.58 -172 33 5.84 NM <1 7.69 166 1350 NA NA 8.39 <1 264 802 52.9 779 140 <0.2 440 0.703 ABMW-IBR 12/01/2015 11.0 27.90 14 808 0.4 -152 53 5.2 ND <1 7.08 193 1160 0.04 NA 13.5 <1 111 345 91.6 1200 140 <0.2 410 1.05 ABMW-lBR 01/05/2016 10.2 27.30 15 686 0.63 -196 9 0.97 0 <1 7.62 149 1080 0.091 NA 3.5 <1 65 357 77.7 961 140 <0.2 420 0.802 ABMW-lBR 03/03/2016 8.2 27.21 15 631 0.45 C -36 169 8.2 0 <1 8.39 185 1250 0.048 NA <1 <1 240 428 42.2 899 150 <0.2 420 0.389 ABMW-3BR 05/19/2015 7.1 22.84 19 863 0.13 -72 133 8.44 NM <1 1.28 129 188 NA NA <1 <1 1660 1690 62.3 573 140 <0.2 540 <0.3 ABMW-3BR 06/16/2015 7.0 23.46 20 859 0.3 -205 0 2.83 NM NA NA NA NA NA <0.005 NA NA NA NA NA NA NA NA NA NA ABMW-3BR 09/01/2015 6.9 24.18 19 860 0.42 -101 105 6.78 1 <1 1.46 116 140 NA NA <1 <1 1630 1540 65.3 614 130 0.229 540 <0.3 ABMW-3BR 12/01/2015 6.9 22.47 15 871 0.23 -102 103 1.25 1.5 <1 1.83 118 158 <0.03 NA <1 <1 1510 1590 62.2 623 140 <0.2 520 <0.3 ABMW-3BR 01/06/2016 7.1 20.83 12 749 0.3 -84 121 8.3 1.5 <1 1.41 124 220 <0.03 NA <1 <1 2050 1820 59.8 590 170 <0.2 530 <0.3 ABMW-5BR 05/19/2015 8.2 24.58 21 329 0.14 -264 -59 4.68 NM <1 2.58 310 54 NA NA <1 <1 129 63 38.4 358 15 0.359 200 <0.3 ABMW-5BR 06/11/2015 8.1 25.10 25 324 0.34 -211 -6 4.21 NM NA NA NA NA NA 0.012 NA NA NA NA NA NA NA NA NA NA ABMW-5BR 09/01/2015 8.0 26.11 24 854 0.44 -158 47 2.19 0 <1 1.66 278 60 NA NA <1 <1 74 67 44.6 321 9.6 <0.2 200 0.333 ABMW-5BR 12/03/2015 8.0 24.51 10 322 0.6 -120 85 5.87 0.5 <1 1.25 305 58 <0.03 NA <1 <1 124 43 45 305 6.8 <0.2 170 <0.3 ABMW-5BR 01/07/2016 7.9 22.65 16 312 0.35 139 344 1.15 0 <1 <1 318 60 <0.03 NA <1 <1 76 42 43.9 294 3.8 <0.2 170 <0.3 CTMW-1 12/17/2010 7.0 7.51 15 516 NM NM NM 5.71 NM <0.5 <5 161 309 NA NA <5 NA 723 1220 NA NA 97.7 <0.1 412 NA CTMW-1 03/08/2011 7.1 6.62 15 678 0.45 -92 113 1.33 NM <0.5 <5 181 367 NA NA <5 NA 822 1220 NA NA 96.4 <0.1 491 NA CTMW-1 06/02/2011 7.1 7.28 19 618 3.45 -102 103 8.5 NM <0.5 <5 144 256 NA NA <5 NA 416 b 303 NA NA 89.1 <0.1 412 NA CTMW-1 10/11/2011 6.9 7.74 18 632 NM NM NM 7.4 NM <0.5 <5 187 348 NA NA <5 =886 1250 NA NA 17.8 <0.1 431 NA CTMW-1 03/12/2012 6.9 1 7.35 17 593 0.6 -66 139 9.44 NM <0.5 <5 134 295 NA NA <5 NA 1 1480 b 1160 NA NA 121 <0.1 436 NA P:\Duke Energy Progress.1026\103. Cape Fear Ash Basin GW Assessment\19.EG_CSASUP\Tables\Table 1-3 Bedrock GW 2L_IMAC Exceedances.xlsx Page 2 of 6 TABLE 1-3 BEDROCK GROUNDWATER EXCEEDANCES CAPE FEAR STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, MONCURE, NC Analytical Parameter pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Barium Boron Chromium (VI) Chromium (VI) Speciation Chromium Cobalt Iron Manganese Sodium Strontium Sulfate Thallium Total Dissolved Solids Vanadium Reporting Units S.U. ft Deg C umhos/cm mg/I mV mV NTUs mg/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I mg/I ug/I mg/I ug/I mg/I ug/I 15A NCAC 02L Standard 6.5-8.5 NE NE NE NE NE NE NE NE 1* 10 700 700 0.07^ 0.07^ 10 1* 300 5o NE NE 250 0.2* 500 0.3* Sample ID Sample Collection Date Field Parameters Analytical Results CTMW-1 06/12/2012 6.9 7.48 20 670 1.4 -49 156 3.88 NM <0.5 <5 157 363 NA NA <5 NA 1210 1460 NA NA 89 <0.1 445 NA CTMW-1 10/15/2012 7.1 7.82 20 656 0.72 -70 135 3.11 NM <0.5 <5 153 364 NA NA <5 NA 951 1260 NA NA 79.7 <0.1 429 NA CTMW-1 03/04/2013 7.0 6.72 15 680 0.4 -46 159 3.12 NM <1 <1 144 347 NA NA <5 NA 887 1460 NA NA 97 <0.2 450 NA CTMW-1 DUP 03/04/2013 7.0 6.72 15 680 0.4 -46 159 3.12 NM <1 <1 143 343 NA NA <5 NA 905 1460 NA NA 97 <0.2 450 NA CTMW-1 06/03/2013 7.0 7.52 19 685 1.72 -69 136 2.44 NM <1 <1 152 364 NA NA <5 NA 899 1260 NA NA 110 <0.2 460 NA CTMW-1 10/09/2013 7.2 7.48 18 691 2.44 -14 191 6.58 NM <1 <1 167 347 NA NA <5 NA 823 1250 NA NA 100 <0.2 460 NA CTMW-1 03/12/2014 7.0 4.44 15 706 0.6 22 227 1.2 NM <1 <1 176 379 NA NA <5 NA 798 1440 NA NA 110 <0.2 460 NA CTMW-1 06/09/2014 7.1 7.21 20 686 1.9 37 242 4.1 NM <1 <1 158 349 NA NA <5 NA 540 979 NA NA 100 <0.2 460 NA CTMW-1 10/14/2014 6.8 7.56 21 660 0.29 -36 169 7.81 NM <1 <1 202 350 NA NA <5 NA 1160 1440 NA NA 100 <0.2 450 NA CTMW-1 03/04/2015 7.1 5.20 18 707 0.37 -54 151 5.48 NM <1 <1 185 379 NA NA <5 NA 874 1430 NA NA 100 <0.2 460 NA CTMW-1 06/09/2015 7.1 7.10 21 700 0.7 -140 65 2.8 NM <1 <1 178 379 NA NA <5 <1 385 546 23.8 NA 100 <0.2 460 NA CTMW-1 06/16/2015 7.0 7.20 22 659 0.9 -54 151 2.48 NM NA NA NA NA NA <0.005 NA NA NA NA NA NA NA NA NA NA CTMW-1 10/07/2015 6.8 6.28 19 704 0.47 -52 154 5.52 NM <1 <1 202 361 NA NA <5 <1 698 1490 23.1 590 100 <0.2 460 <0.3 CTMW-1 12/02/2015 7.1 6.14 18 692 0.5 -84 121 3.1 1.5 <1 <1 219 378 <0.03 NA <1 <1 1320 1300 23.7 613 110 <0.2 470 <0.3 CTMW-1 03/01/2016 6.9 5.67 17 707 0.32 -52 153 2.6 2 <1 <1 147 428 NA NA <5 <1 1320 1670 23.8 576 120 <0.2 470 <0.3 CTMW-1 DUP 03/01/2016 6.9 5.67 17 707 0.32 -52 153 2.6 2 <1 <1 146 423 NA NA <5 <1 1430 1680 23.6 572 130 <0.2 460 <0.3 CTMW-1 06/01/2016 7.0 6.98 20 678 1.08 -67 138 8.62 NM <1 <1 137 388 NA NA <5 <1 1610 1340 23.4 567 130 0.495 490 0.311 CTMW-2 03/08/2011 8.4 11.36 14 274 0.84 -164 41 8.67 NM <0.5 <5 144 54.2 NA NA <5 NA 194 51.9 NA NA 5.7 b <0.1 213 b NA CTMW-2 06/09/2011 7.8 11.35 19 285 1.02 -89 117 110 NM <0.5 <5 249 <50 NA NA <5 NA 1340 34.9 NA NA <5 <0.1 182 NA CTMW-2 10/11/2011 8.1 11.67 17 280 0.73 -220 -15 16.3 NM <0.5 <5 206 <50 NA NA <5 NA 402 46.1 NA NA <5 <0.1 175 NA CTMW-2 10/07/2015 7.6 9.99 17 304 0.57 -7 198 5.95 NM <1 9.38 249 <50 NA NA <5 <1 21 <5 43.1 307 6.3 <0.2 180 2.1 CTMW-2 12/02/2015 8.0 10.14 17 303 0.8 67 272 6.6 0 <1 7.38 246 <50 <0.03 NA <1 <1 91 9 44.2 302 6 <0.2 190 1.78 CTMW-2 01/07/2016 8.2 8.40 14 290 0.4 34 239 37.3 NM <1 4.05 242 <50 <0.03 NA <1 <1 207 10 45.3 290 4.4 <0.2 180 0.915 CTMW-2 03/01/2016 7.8 8.88 17 302 2.6 8 213 1.1 0 <1 8.23 254 <50 NA NA <5 <1 <10 <5 45.4 309 5.9 <0.2 180 1.66 CTMW-2 06/01/2016 8.0 10.99 19 298 2.42 87 292 1.71 NM <1 8.85 259 <50 NA NA <5 <1 18 <5 44.8 325 7 <0.2 200 1.65 CTMW-7 12/21/2010 9.0 21.84 9 477 NM NM NM 128 NM <0.5 <5 37.4 <50 NA NA <5 NA 165 105 NA NA 98.3 <0.1 365 NA CTMW-7 03/08/2011 7.8 22.16 13 572 1.96 46 251 31.8 NM <0.5 <5 36.8 b <50 NA NA <5 NA 673 89.2 NA NA 73 <0.1 373 b NA CTMW-7 06/03/2011 7.5 21.92 20 562 5.2 -57 148 7.33 NM <0.5 <5 41.5 <50 NA NA <5 NA 179 b 148 NA NA 89.3 <0.1 361 NA CTMW-7 03/13/2012 7.3 23.87 18 471 2.32 -43 162 8 NM <0.5 <5 34 <50 NA NA <5 NA 303 b 53 NA NA 67.3 <0.1 353 NA CTMW-7 10/15/2012 7.5 23.75 19 551 1.02 -31 174 4.67 NM <0.5 <5 40.5 <50 NA NA <5 NA 66.6 80.5 NA NA 87.6 <0.1 319 NA CTMW-7 03/04/2013 7.4 22.89 14 570 1.18 98 303 4.08 NM <1 2 34 <50 NA NA <5 NA 19 371 NA NA 76 <0.2 360 NA CTMW-7 06/03/2013 7.3 23.49 20 576 2.17 116 321 2.46 NM <1 2.24 43 <50 NA NA <5 NA 68 291 NA NA 87 <0.2 370 NA CTMW-7 DUP 06/03/2013 7.3 23.49 20 576 2.17 116 321 2.46 NM <1 2.2 45 <50 NA NA <5 NA 72 273 NA NA 88 <0.2 360 NA CTMW-7 10/09/2013 7.4 24.11 17 597 0.58 35 240 7.02 NM <1 1.55 45 <50 NA NA <5 NA 99 634 NA NA 89 <0.2 390 NA CTMW-7 03/13/2014 7.1 22.34 12 553 2.8 154 359 2.9 NM <1 1.27 37 51 NA NA <5 NA 64 758 NA NA 91 <0.2 360 NA CTMW-7 06/10/2014 7.3 24.13 20 584 1.6 112 317 2.3 NM <1 1.73 45 <50 NA NA <5 NA 30 276 NA NA 85 <0.2 390 NA CTMW-7 10/14/2014 6.8 24.63 20 527 0.5 -4 201 1.41 NM <1 1.44 46 52 NA NA <5 NA 43 201 NA NA 87 <0.2 370 NA CTMW-7 03/04/2015 7.0 23.80 18 576 1.89 28 233 1.26 NM <1 1.15 1 36 53 NA NA <5 NA 1 50 138 NA NA 85 1 <0.2 350 NA P:\Duke Energy Progress.1026\103. Cape Fear Ash Basin GW Assessment\19.EG_CSASUP\Tables\Table 1-3 Bedrock GW 2L_IMAC Exceedances.xlsx Page 3 of 6 TABLE 1-3 BEDROCK GROUNDWATER EXCEEDANCES CAPE FEAR STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, MONCURE, NC Analytical Parameter pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Barium Boron Chromium (VI) Chromium (VI) Speciation Chromium Cobalt Iron Manganese Sodium Strontium Sulfate Thallium Total Dissolved Solids Vanadium Reporting Units S.U. ft Deg C umhos/cm mg/I mV mV NTUs mg/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I mg/I ug/I mg/I ug/I mg/I ug/I 15A NCAC 02L Standard 6.5-8.5 NE NE NE NE NE NE NE NE 1* 10 700 700 0.07^ 0.07^ 10 1* 300 5o NE NE 250 0.2* 500 0.3* Sample ID Sample Collection Date Field Parameters Analytical Results CTMW-7 06/08/2015 7.2 24.43 22 576 1.88 64 269 0.25 NM <1 1.5 49 55 NA NA <5 <1 17 110 21.2 NA 85 <0.2 380 NA CTMW-7 10/07/2015 6.9 23.69 20 586 1.02 96 301 3.73 NM <1 1.57 50 57 NA NA <5 <1 40 448 19.8 497 86 <0.2 360 1.24 CTMW-7 12/03/2015 7.2 23.15 14 533 0.7 6 211 3.6 ND <1 1.18 38 51 <0.03 NA <1 <1 115 511 19.3 442 91 <0.2 340 1.25 CTMW-7 01/07/2016 7.7 22.37 12 568 0.86 -110 95 4.08 0 <1 1.34 43 <50 0.11 NA <1 <1 65 500 19.6 459 90 <0.2 340 3.33 CTMW-7 03/01/2016 6.9 22.27 18 539 2.4 20 225 1.2 0 <1 1.28 36 52 NA NA <5 <1 14 53 19.4 424 85 <0.2 350 2.03 CTMW-7 06/01/2016 7.2 23.74 20 533 1.65 11 216 1.54 NM <1 1.34 39 <50 NA NA <5 <1 41 78 19.5 463 88 <0.2 370 1.27 CTMW-8 12/16/2010 7.5 11.72 14 830 NM NM NM 3.4 NM 1.7 <5 143 228 NA NA <5 NA 1240 409 NA NA 99.3 <0.1 608 NA CTMW-8 03/08/2011 7.4 11.02 16 917 0.6 -127 78 9.67 NM <0.5 6 255 275 NA NA <5 NA 2170 568 NA NA 108 <0.1 616 NA CTMW-8 06/01/2011 7.4 11.58 20 861 0.29 -111 94 5.26 NM <0.5 <5 218 187 NA NA <5 NA 1180 b 475 NA NA 95.2 <0.1 561 NA CTMW-8 10/10/2011 7.4 11.92 18 811 0.56 -88 117 4.7 NM <0.5 <5 241 244 NA NA <5 NA 1230 586 NA NA 16.4 <0.1 480 NA CTMW-8 03/13/2012 7.3 11.40 18 747 0.56 -125 80 8.4 NM <0.5 5.8 242 317 NA NA <5 NA 1540 b 709 NA NA 95.3 <0.1 503 NA CTMW-8 06/12/2012 7.2 11.68 18 805 2.14 -93 112 4.26 NM <0.5 10.5 262 253 NA NA <5 NA 1680 658 NA NA 90.6 <0.1 502 NA CTMW-8 10/16/2012 7.5 11.97 17 788 0.59 -28 177 3.78 NM <0.5 <5 215 233 NA NA <5 NA 434 269 NA NA 151 <0.1 476 NA CTMW-8 DUP 10/16/2012 7.5 11.97 17 788 0.59 -28 177 3.78 NM <0.5 5.4 208 231 NA NA <5 NA 648 404 NA NA 155 <0.1 483 NA CTMW-8 03/05/2013 7.2 11.05 14 798 0.37 -31 174 5.11 NM <1 4.92 205 274 NA NA <5 NA 1190 733 NA NA 87 <0.2 500 NA CTMW-8 06/04/2013 7.3 11.43 18 793 0.78 -14 191 4.08 NM <1 6.01 213 270 NA NA <5 NA 958 737 NA NA 91 <0.2 480 NA CTMW-8 10/08/2013 7.4 11.83 17 773 0.8 -12 193 6.56 NM <1 4.32 200 267 NA NA <5 NA 680 642 NA NA 99 <0.2 480 NA CTMW-8 DUP 10/08/2013 7.4 11.83 17 773 0.8 -12 193 6.56 NM <1 4.32 199 271 NA NA <5 NA 1070 712 NA NA 99 <0.2 480 NA CTMW-8 03/12/2014 7.3 8.68 15 772 0.7 -12 193 4.2 NM <1 6.69 207 345 NA NA <5 NA 1850 947 NA NA 110 <0.2 510 NA CTMW-8 06/10/2014 7.2 11.53 19 753 1 -53 152 2.3 NM <1 4.46 194 328 NA NA <5 NA 1090 814 NA NA 100 <0.2 500 NA CTMW-8 10/14/2014 6.8 11.81 19 721 0.22 -67 138 1.41 NM <1 2.99 176 316 NA NA <5 NA 1040 642 NA NA 100 <0.2 480 NA CTMW-8 03/04/2015 7.1 9.58 15 783 0.23 -62 143 1.93 NM <1 6.69 185 382 NA NA <5 NA 2070 980 NA NA 110 <0.2 480 NA CTMW-8 DUP 03/04/2015 7.1 9.58 15 783 0.23 -62 143 1.93 NM <1 6.81 191 422 NA NA <5 NA 2580 1050 NA NA 110 <0.2 490 NA CTMW-8 06/09/2015 7.3 11.56 19 759 0.55 -111 94 6.97 NM <1 4.55 187 356 NA NA <5 <1 1270 686 66.5 NA 100 <0.2 450 NA CTMW-8 DUP 06/09/2015 7.3 11.56 19 759 0.55 -111 94 6.97 NM <1 5.15 193 368 NA NA <5 <1 1640 750 65.6 NA 110 <0.2 460 NA CTMW-8 06/17/2015 6.7 11.69 18 736 0.29 -189 16 1.2 NM NA NA NA NA NA <0.005 NA NA NA NA NA NA NA NA NA NA CTMW-8 10/07/2015 7.0 10.63 17 1431 0.4 -30 175 2.81 NM <1 2.23 166 375 NA NA <5 <1 1270 754 59.4 808 100 <0.2 480 <0.3 CTMW-8 12/02/2015 7.1 10.80 18 747 0.4 -6 199 4.5 ND <1 1.97 170 344 <0.03 NA <1 <1 550 819 61.5 807 100 <0.2 480 <0.3 CTMW-8 01/06/2016 7.1 8.89 12 732 0.44 -84 121 3.6 0 <1 3.98 173 421 <0.03 NA <1 <1 2320 1270 53 794 110 <0.2 450 <0.3 CTMW-8 03/02/2016 7.1 9.79 14 775 0.49 -105 100 5.1 0 <1 6.3 162 436 NA NA <5 <1 3360 1310 50 764 110 <0.2 480 <0.3 CTMW-8 06/01/2016 7.2 11.05 18 756 0.41 86 291 8.7 NM <1 4.56 163 391 NA NA <5 <1 2200 1110 54.1 847 110 <0.2 490 <0.3 MW-5BR 06/18/2015 11.2 17.86 21 539 1.34 -165 40 3.44 NM <1 <1 37 <50 NA NA 1.07 <1 39 <5 27.7 135 71 <0.2 220 14.4 MW-5BR 09/02/2015 11.1 16.64 23 710 1 -104 101 3 ND <1 1.39 40 <50 NA 0.05j <1 <1 37 <5 52.5 192 110 <0.2 310 19.9 MW-5BR 12/02/2015 11.2 12.32 17 955 0.46 -108 98 1.45 NM <1 2.36 42 <50 <0.03 NA <1 <1 22 <5 70.5 297 190 <0.2 460 20.9 MW-5BR 01/07/2016 11.7 11.20 11 878 0.51 -96 109 2.08 0 <1 2.34 44 <50 <0.03 NA <1 <1 <10 <5 61.9 316 200 <0.2 420 19.7 MW-5BRR 03/02/2016 7.3 12.06 15 377 0.5 -29 176 1.5 0 <1 1.06 699 <50 <0.03 NA <1 <1 41 623 12.9 409 13 <0.2 230 0.693 MW-5BRR 06/02/2016 7.4 12.95 22 374 0.55 C 82 287 2.18 0 <1 <1 793 <50 <0.03 M1 NA <1 <1 127 688 13.3 429 17 <0.2 230 <0.3 MW-6BR 06/03/2015 7.5 5.40 19 1294 0.78 -193 12 4.64 NM <1 <1 757 <50 NA NA <1 <1 116 475 94.1 907 39 <0.2 790 2.19 P:\Duke Energy Progress.1026\103. Cape Fear Ash Basin GW Assessment\19.EG_CSASUP\Tables\Table 1-3 Bedrock GW 2L_IMAC Exceedances.xlsx Page 4 of 6 TABLE 1-3 BEDROCK GROUNDWATER EXCEEDANCES CAPE FEAR STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, MONCURE, NC Analytical Parameter pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Barium Boron Chromium (VI) Chromium (VI) Speciation Chromium Cobalt Iron Manganese Sodium Strontium Sulfate Thallium Total Dissolved Solids Vanadium Reporting Units S.U. ft Deg C umhos/cm mg/I mV mV NTUs mg/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I mg/I ug/I mg/I ug/I mg/I ug/I 15A NCAC 02L Standard 6.5-8.5 NE NE NE NE NE NE NE NE 1* 10 700 700 0.07^ 0.07^ 10 1* 300 50 NE NE 250 0.2* 500 0.3* Sample ID Sample Collection Date Field Parameters Analytical Results MW-6BR 06/30/2015 7.4 5.06 19 1211 0.31 -248 -43 0.42 0 <1 <1 842 <50 NA NA <1 <1 178 743 89.6 946 42 <0.2 770 0.659 MW-6BR 09/01/2015 7.3 5.80 21 1211 0.37 -107 98 3.09 0 <1 <1 713 <50 NA NA <1 <1 177 639 88.2 894 47 0.586 720 0.784 MW-6BR 12/01/2015 7.3 4.43 14 1132 0.6 -62 143 2.06 0 <1 <1 619 <50 <0.03 NA 2.15 <1 239 630 84 821 45 <0.2 600 0.419 MW-6BR 01/06/2016 7.4 4.27 12 1098 1.2 92 297 4.98 NM <1 <1 673 <50 <0.03 NA <1 <1 424 658 85.8 856 46 <0.2 620 0.376 MW-10BR 05/27/2015 8.4 16.60 18 703 0.13 -41 164 3.92 NM <1 2.49 64 110 NA NA <1 <1 137 336 50.5 941 210 <0.2 490 3.34 MW-10BR 06/16/2015 9.0 15.63 18 775 0.21 -260 -55 3.74 NM NA NA NA NA NA 0.023 NA NA NA NA NA NA NA NA NA NA MW-10BR 09/02/2015 9.5 16.06 22 1057 0.51 -147 58 9.81 0 <1 1.86 96 66 NA NA <1 <1 71 32 103 M4 982 340 0.701 690 2.31 MW-10BR 12/03/2015 9.4 13.70 14 1000 0.4 -143 62 6.94 0 <1 1.4 146 57 0.036 NA <1 <1 149 23 98 996 390 <0.2 590 1.02 MW-10BR 01/07/2016 8.0 12.44 14 731 0.5 -219 -14 2.9 0 <1 1.8 76 83 <0.03 NA <1 <1 36 167 68.6 839 270 <0.2 480 0.862 MW-10BRL 07/13/2016 7.9 33.20 21 313 1.9 146 351 9.7 NM <1 1.4 47 121 <0.03 NA <1 <1 164 17 60.8 132 26 <0.2 190 3.69 MW-10D 05/28/2015 6.6 15.40 18 1214 1.18 136 341 4.95 NM <1 1.88 56 221 NA NA <1 <1 243 974 22.6 1300 410 0.233 890 0.938 MW-10D 06/16/2015 6.5 15.56 21 1552 0.58 -105 100 1.54 NM NA NA NA NA NA 0.006 NA NA NA NA NA NA NA NA NA NA MW-10D 09/02/2015 6.4 15.70 19 1930 0.8 20 225 2.29 0 <1 3.17 43 478 NA NA <1 <1 346 1050 32.8 1950 1600 0.27 1400 0.626 MW-10D DUP 09/02/2015 6.4 15.70 19 1930 0.8 20 225 2.29 0 <1 2.31 37 372 NA NA <1 <1 294 1080 27.6 1660 1200 <0.2 1200 0.603 MW-10D 12/03/2015 6.3 13.69 14 3529 0.47 24 229 1.71 0.5 <1 2.14 38 511 <0.03 NA <1 <1 342 1060 34.4 2070 810 <0.2 1300 0.315 MW-10D 01/07/2016 6.1 12.22 11 1842 0.5 -147 58 0.81 0.5 <1 2.47 37 459 <0.03 NA <1 <1 419 1190 33.1 1900 840 <0.2 1400 <0.3 MW-12BR 03/19/2015 7.4 10.90 16 523 0.28 -43 162 3.88 0 <1 1.12 612 <50 NA NA <1 <1 107 482 39.6 453 12 <0.2 280 0.338 MW-12BR 06/11/2015 7.4 11.71 19 589 0.44 -180 26 4.08 NM NA NA NA NA NA 0.045 NA NA NA NA NA NA NA NA NA NA MW-12BR 09/01/2015 7.5 11.98 21 600 0.59 -134 71 7.75 NM <1 1.31 711 <50 NA NA <1 <1 96 613 42.4 488 23 <0.2 330 0.355 MW-12BR 12/01/2015 7.6 10.59 16 588 0.3 -217 -12 1 ND <1 1.2 693 <50 <0.03 NA <1 <1 22 615 40.9 482 25 <0.2 330 <0.3 MW-12BR 01/05/2016 7.7 8.90 11 585 0.38 -131 74 0 0 <1 1.13 735 <50 <0.03 NA <1 <1 16 650 41 493 27 <0.2 370 <0.3 MW-12BR 03/01/2016 7.4 8.95 15 580 0.39 -139 66 1.3 0 <1 1.07 708 <50 0.051 NA <1 <1 13 623 44.1 486 28 <0.2 340 <0.3 MW-12BR 06/02/2016 7.4 10.58 18 602 0.3 C -44 161 0.9 0 <1 1.17 720 <50 <0.03 NA <1 <1 16 643 41.8 502 31 <0.2 340 0.32 MW-14 09/03/2013 8.9 12.18 22 180 0.27 -388 NM 699 NM 0.44j 3.3 132 123 NA NA 12.8j NA 7370 525 83.60001 NA 30.9 <0.15 266 NA MW-14 06/30/2015 9.1 11.80 19 423 0.13 -309 -104 31.6 0 <1 <1 64 132 NA NA 1.06 <1 419 24 81.9 278 30 <0.2 260 1.37 MW-14 12/03/2015 9.3 10.72 12 361 0.2 -99 106 76.9 ND <1 <1 62 122 <0.03 NA 1.67 <1 1390 60 75.7 225 30 <0.2 260 1.75 MW-17BR 03/19/2015 8.2 6.34 14 491 0.23 -19 186 4.6 0 <1 2.24 536 <50 NA NA <1 <1 143 34 54.9 595 38 <0.2 290 0.761 MW-17BR 06/10/2015 8.5 8.80 22 422 0.35 -358 -153 4 NM NA NA NA NA NA 0.393 NA NA NA NA NA NA NA NA NA NA MW-17BR 09/01/2015 8.2 9.98 18 522 0.2 -235 -30 1.4 ND <1 <1 485 <50 NA NA <1 <1 39 59 58.6 660 30 <0.2 310 0.485 MW-17BR 12/01/2015 7.8 6.59 13 553 0.3 -184 21 8.44 NM <1 <1 596 <50 <0.03 NA <1 <1 300 70 52.8 706 28 <0.2 300 0.72 MW-17BR 01/05/2016 8.2 5.62 11 502 0.53 -218 -13 1.66 NM <1 <1 612 <50 <0.03 NA <1 <1 69 59 54.1 709 25 <0.2 340 <0.3 MW-20BR 05/27/2015 7.7 13.00 16 331 0.07 -124 81 6.37 NM <1 1.57 145 <50 NA NA <1 <1 730 131 40 317 12 <0.2 210 1.61 MW-20BR 06/11/2015 8.0 13.12 18 329 0.18 -170 35 28.5 NM NA NA NA NA NA 0.022 NA NA NA NA NA NA NA NA NA NA MW-20BR 09/01/2015 7.9 13.38 18 499 0.24 -204 1 8.55 0 <1 <1 136 <50 NA NA <1 <1 214 127 43.6 314 14 <0.2 220 0.468 MW-20BR 12/01/2015 7.9 12.59 15 341 0.18 -163 42 9.76 0 <1 <1 136 <50 <0.03 NA <1 <1 182 121 40.1 312 11 <0.2 210 0.765 MW-20BR 01/06/2016 7.9 10.47 15 352 0.28 -213 -8 4.7 NM <1 <1 144 <50 <0.03 NA <1 <1 186 128 42.3 323 17 <0.2 190 0.315 MW-20BR DUP 01/06/2016 7.9 10.47 15 352 0.28 -213 -8 4.7 NM <1 <1 141 <50 <0.03 NA <1 <1 198 127 41.3 313 13 <0.2 200 0.318 MW-21BR 05/07/2015 8.8 20.45 30 368 1.7 60 265 4.78 NM <1 1.98 106 151 NA NA <1 <1 209 <5 70.1 109 5.9 <0.2 180 0.997 P:\Duke Energy Progress.1026\103. Cape Fear Ash Basin GW Assessment\19.EG_CSASUP\Tables\Table 1-3 Bedrock GW 2L_IMAC Exceedances.xlsx Page 5 of 6 TABLE 1-3 BEDROCK GROUNDWATER EXCEEDANCES CAPE FEAR STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, MONCURE, NC Analytical Parameter pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Barium Boron Chromium (VI) Chromium (VI) Speciation Chromium Cobalt Iron Manganese Sodium Strontium Sulfate Thallium Total Dissolved Solids Vanadium Reporting Units S.U. ft Deg C umhos/cm mg/I mV mV NTUs mg/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I mg/I ug/I mg/I ug/I mg/I ug/I 15A NCAC 02L Standard 6.5-8.5 NE NE NE NE NE NE NE NE 1* 10 700 700 0.07^ 0.07^ 10 1* 300 50 NE NE 250 0.2* 500 0.3* Sample ID Sample Collection Date Field Parameters Analytical Results MW-21BR 06/10/2015 8.8 19.57 28 377 2.2 -159 46 3.88 NM NA NA NA NA NA 0.11 NA NA NA NA NA NA NA NA NA NA MW-21BR 09/01/2015 8.8 19.29 31 414 0.6 31 236 2 NO <1 1.85 97 138 NA NA 31 <1 184 7 82 103 7.3 <0.2 210 0.736 MW-21BR 12/01/2015 8.6 18.87 14 409 0.5 -6 199 1 NO <1 2.27 107 143 0.1 NA 1.41 <1 83 7 77.9 108 7 <0.2 200 0.395 MW-21BR 01/05/2016 8.7 18.87 12 385 0.5 -103 102 2.6 0 <1 2.23 106 145 0.058 NA 3 <1 102 5 75.5 113 8.5 <0.2 230 0.688 MW-22BR 07/12/2016 8.4 9.85 24 491 0.52 -14 192 5.34 0.5 <1 1.64 712 <50 <0.03 NA <1 <1 437 182 61.4 546 18 <0.2 430 0.775 MW-23BR 07/12/2016 7.8 10.60 23 655 0.43 77 282 9.87 0 <1 3.27 396 <50 0.18 NA <1 <1 217 358 58.3 874 51 <0.2 380 5.31 MW-23D 07/12/2016 8.1 8.07 21 527 0.57 19 224 3.3 0 <1 3.6 85 <50 0.096 NA <1 <1 53 223 52.5 330 65 <0.2 300 11.4 PZ-3D 03/07/2007 7.8 2.11 56 814 NM NM NM NM NM <0.58 2.3 313 42.7 NA NA 36.8 NA <20 518 83.9 NA 68 <0.044 440 NA PZ-3D 12/19/2007 7.7 2.83 60 575 NM NM NM NM NM <0.3 5.2 338 41.8 NA NA <0.059 NA 161 540 NA NA 75.9 0.013 410 NA PZ-3D 04/30/2008 7.8 2.20 61 566 NM NM NM NM NM 0.57 4.3 295 39.8 NA NA 0.47 NA <8.5 98.3 NA NA 82.8 <0.068 445 NA PZ-3D 06/03/2009 7.0 2.81 71 658 NM NM NM NM NM <2 3.3 296 <200 NA NA <2 NA <100 70.7 NA NA 87 <1 472 NA PZ-3D 10/19/2009 7.5 3.22 65 565 NM NM NM NM NM <2 4.2 269 <200 NA NA 2.1 NA <100 133 NA NA 80 <1 419 NA PZ-3D 08/05/2015 7.6 6.05 23 645 0.47 -38 167 4.41 NM <1 5.49 138 <50 NA NA <1 <1 97 475 73.2 646 74 <0.2 390 0.384 PZ-3D 12/03/2015 7.4 4.08 16 714 0.21 -60 145 2.3 NM <1 4.84 139 52 <0.03 NA <1 <1 75 548 73.4 677 73 <0.2 770 <0.3 PZ-3D 01/07/2016 7.8 3.69 14 668 2.16 75 280 0.64 0 <1 4.57 145 58 0.45 NA <1 <1 20 29 64.4 633 83 <0.2 380 <0.3 Prepared by: BER Checked by: CIS Notes: n - Bold highlighted concentration indicates exceedance of the 15A NCAC 02L Standard, Appendix 2, April 1, 2013 Spec Cord = Specific Conductance Deg C = Degrees Celsius NTU = Nephelometric turbidity unit DUP = Duplicate umhos/cm = Micro mhos per centimeter NE = Not established S.U. = Standard Unit mg/I = Milligram per liter DO = Dissolved oxygen ft = Feet my = Millivolts ORP = Oxidation Reduction Potential NA = Not analyzed ug/I = Microgram per liter Eh = Redox Potential NM = Not measured NO = Not Detected Temp = Temperature ^ = NC DHHS Health Screening Level < = Concentration not detected at or above the reporting limit. * = Interim Maximum Allowable Concentrations (IMACs) of the 15A NCAC 02L Standard, Appendix 1, April 1, 2013. 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. 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. M4 = The spike recovery valuable was unusable since the analyte concentration in the sample was disproportionate to the spike level. P:\Duke Energy Progress.1026\103. Cape Fear Ash Basin GW Assessment\19.EG_CSASUP\Tables\Table 1-3 Bedrock GW 2L_IMAC Exceedances.xlsx Page 6 of 6 TABLE 1-4 RADIOLOGICAL ANALYTICAL RESULTS CAPE FEAR STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, MONCURE, 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 ID7Coll Sample ection Date Analytical Resutlts Background BGMW-4 03/02/2016 0.694 <3 0.694 <0.00005 <0.00005 <0.00005 <0.0002 <RL BGMW-4 06/02/2016 0.499 <1 0.499 <0.00005 <0.00005 <0.00005 <0.0002 <RL BGTMW-4 03/02/2016 0.967 <3 0.967 <0.00005 <0.00005 <0.00005 <0.0002 <RL BGTMW-4 06/02/2016 0.496 <1 0.496 <0.00005 <0.00005 <0.00005 <0.0002 <RL MW-9 03/01/2016 0.529 2.25 2.799 <0.00005 <0.00005 <0.00005 0.000472 0.000472 MW-9 06/02/2016 7.14 0.862 8.002 <0.00005 <0.00005 <0.00005 0.0005 0.0005 MW-9BR 03/01/2016 1.09 <3 1.09 <0.00005 <0.00005 <0.00005 <0.0002 <RL MW-9BR 06/02/2016 <1 <1 <RL <0.00005 <0.00005 <0.00005 <0.0002 <RL MW-15BR 03/02/2016 0.801 <3 0.801 <0.00005 <0.00005 <0.00005 0.00106 0.00106 MW-15BR 06/02/2016 1.59 1.68 3.27 <0.00005 <0.00005 <0.00005 0.00105 0.00105 MW-15SL 03/02/2016 0.872 <3 0.872 <0.00005 <0.00005 <0.00005 <0.0002 <RL MW-15SL 06/02/2016 0.91 <1 0.91 <0.00005 <0.00005 <0.00005 <0.0002 <RL MW-15SU 03/02/2016 <1 <3 <RL <0.00005 <0.00005 <0.00005 0.0165 0.0165 MW-15SU 06/02/2016 1.05 1 2.05 <0.00005 <0.00005 <0.00005 0.00738 0.00738 MW-16BR 03/02/2016 0.911 1.59 2.501 <0.00005 <0.00005 <0.00005 0.000359 0.000359 MW-16BR 06/02/2016 1.46 0.991 2.451 <0.00005 <0.00005 <0.00005 0.000256 0.000256 MW-16S 06/30/2015 3 <3 3 <0.00005 <0.00005 <0.00005 0.000209 0.000209 MW-16S 03/02/2016 1.7 <3 1.7 <0.00005 <0.00005 <0.00005 0.000304 0.000304 MW-16S 06/02/2016 2.17 <1 2.17 <0.00005 <0.00005 <0.00005 0.000329 0.000329 Surficial ABMW-03SR 03/03/2016 1.18 <3 1.18 <0.00005 <0.00005 <0.00005 0.00054 0.00054 CMW-1 06/17/2015 0.57 <3 0.57 <0.00005 <0.00005 <0.00005 <0.0002 <RL MW-12 03/01/2016 0.528 2.12 2.648 <0.00005 <0.00005 <0.00005 0.000953 0.000953 MW-12 06/02/2016 0.52 <1 0.52 <0.00005 <0.00005 <0.00005 0.000841 0.000841 PZ-5 03/02/2016 0.921 <3 0.921 <0.00005 <0.00005 <0.00005 <0.0002 <RL PZ-5 06/02/2016 0.611 <1 0.611 <0.00005 <0.00005 <0.00005 <0.0002 <RL Bedrock ABMW-1BR 03/03/2016 0.879 <3 0.879 <0.00005 <0.00005 <0.00005 0.000146j 0.000146j MW-5BR 06/18/2015 <1 <3 <RL <0.00005 <0.00005 <0.00005 <0.0002 <RL MW-5BRR 03/02/2016 0.788 <3 0.788 <0.00005 <0.00005 <0.00005 0.000333 0.000333 MW-5BRR 06/02/2016 0.469 1.29 1.759 <0.00005 <0.00005 <0.00005 0.000135j 0.000135j MW-12BR 03/01/2016 0.657 1.76 2.417 <0.00005 <0.00005 <0.00005 0.000852 0.000852 MW-12BR 06/02/2016 2.22 0.727 2.947 <0.00005 <0.00005 <0.00005 0.000893 0.000893 Prepared by: BER Checked by: CJS Notes• Q - 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 pCVL = picocuries per liter ug/mL = micrograms per milliliter P:\Duke Energy Progress. 1026\103. Cape Fear Ash Basin GW Assessment\19.EG_CSASUP\Tables\Table 1-4 Radiological Analytical Results.xisx Page 1 of 1 TABLE 1-5 WATER LEVEL ELEVATIONS AND VERTICAL HYDRAULIC GRADIENTS CAPE FEAR STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, MONCURE, NC Identification Monitoring Zone Total Well Depth' Feet-BGS ( ) Screened Interval Feet-BGS ( ) Measuring Point TOC Feet-MSL ( ) Ground Surface Feet-MSL ( ) 1 Depth to Water (Feet-BTOC) Potentionnetric Surface Elevation (feet MSL) Vertical Gradient Direction BACKGROUND WELLS BGMW-04 Surficial 19 9-19 180.74 177.70 16.09 164.65 0.015 downward BGTMW-04 Bedrock 48 38-48 180.85 175.50 16.65 164.20 MW-09 Bedrock 20 10-20 191.78 187.30 13.53 178.25 MW-09BR Bedrock 40 35-40 192.06 188.35 17.37 174.69 0.159 downward MW-15SU Surficial 10 5-10 172.73 169.48 9.01 163.72 0.142 downward MW-15SL Surficial 20 15-20 172.6877 169.45 10.43 162.2577 MW-15BR Bedrock 60 55-60 172.92 169.69 9.12 163.80 -0.039 upward MW-16S Surficial 16 6-16 168.05 165.1 3.00 165.05 0.011 downward MW-16BR Bedrock 51 46-51 168.55 165.35 3.91 164.64 SOURCE AREA WELLS AND PIEZOMETERS ABMW-01 Ash Pore Water 35 30-35 201.60 198.66 20.49 181.11 0.492 downward ABMW-01S Surficial 51 46-51 201.833 198.64 28.38 173AS3 0.048 downward ABMW-01BR Bedrock 73 68-73 201.44 198.5 28.96 172.48 ABMW-02SU Surficial 12 7-12 193.66 190.47 10.03 183.63 0.083 downward PZ-09 Surficial 22 12-22 193.82 190.82 10.76 183.06 0.049 ABMW-02SL Surficial 30 20-30 193.64 190.59 10.22 183.42 upward ABMW-03 Ash Pore Water 20 15-20 187.23 184.33 13.52 173.71 0.179 downward ABMW-03SR Surfilcial 38 33-38 187.29 184.18 16.84 170.45 0.214 downward ABMW-03BR Bedrock 66 61-66 187.24 184.29 22.76 164.48 ABMW-04 Ash Pore Water 26 21-26 193.94 190.89 15.33 178.61 0.230 downward ABMW-04S Surficial 45 40-45 193.88 190.81 18.83 175.05 PZ-07 Ash Pore Water 18 8-18 189.74 187.29 13.49 176.25 - PZ-08 Ash Pore Water 21 11-21 193.31 193.17 16.22 177.09 - - PZ-10 Ash Pore Water 18 8-18 185.46 183.53 Dry NA ABMW-05 Ash Pore Water 17 12-17 186.78 183.57 Dry NA - - ABMW-05S Surficial 33 28-33 186.39 183.34 24.14 162.25 0.003 downward ABMW-05BR Bedrock 60 55-60 186.56 183.54 24.40 162.16 SITE WELLS AND PIEZOMETERS CMW-01 Surficial 15 5-15 165.67 162.30 8.08 157.59 CTMW-01 Bedrock 53 38-53 166.04 163.40 7.36 158.68 -0.032 upward CMW-02 Surfilcial 14 4-14 169.40 166.60 10.60 158.80 CTMW-02 Bedrock 52.5 42.5-52.5 169.17 166.50 11.23 157.94 0.022 downward CMW-05 Surficial 20 10-20 182.44 178.60 14.8 167.64 MW-05BRR Bedrock 57.5 52.5-57.5 181.77 178.57 14.48 167.29 0.009 downward CMW-06 Surficial 14 4-14 169.89 166.60 4.98 164.91 0.010 MW-06BR Bedrock 37.5 32.5-37.5 170.24 166.93 5.65 164.59 upward CMW-07 Surficial 26.5 16.5-26.5 184.58 181.50 23.34 161.24 0.032 downward CTMW-07 Bedrock 48 38-48 184.66 181.40 24.19 160.47 CMW-08 Surficial 15 5-15 170.21 167.70 9.00 161.21 0.068 downward CTMW-08 Bedrock 48.5 38.5-48.5 170.32 167.40 11.44 158.88 CMW-03 Surricial 15 5-15 175.96 172.70 14.44 161.52 0.095 downward MW-10 Surficial 20 10-20 173.82 170.94 12.86 160.96 0.112 downward MW-10D Bedrock 35 30-35 174.29 171.1 15.20 159.09 MW-10BR Bedrock 58 53-58 174.22 171.05 15.36 158.86 0.010 0.005 downward downward MW-lOBRL Bedrock 80 70-80 173.14 170.97 14.38 158.76 MW-11 Surficial 20 10-20 175.02 171.74 13.67 161.35 - - MW-12 Surficial 20 10-20 171.12 167.72 12.43 158.69 0.028 MW-12BR Bedrock 49 44-49 170.76 167.89 11.15 159.61 upward MW-13 Surficial 20 10-20 171.95 168.95 10.77 161.18 - MW-17SU Surficial 19 14-19 172.18 169.02 9.87 162.31 MW-17SL Surficial 30 25-30 172.66 169.54 9.05 163.61 -0.150 upward MW-17BR Bedrock 57 52-57 173.49 170.34 8.40 165.09 -0.055 upward MW-18S Surflicial 9.5 4.5-9.5 169.26 165.9 4.33 164.93 - MW-19S Surficial 7.8 2.8-7.8 176.91 173.83 Dry NA - MW-20S Surficial 25 15-25 170.77 168.01 11.48 159.29 MW-20BR Bedrock 61 56-61 171.23 167.98 13.01 158.22 0.028 downward MW-21SU Surficial 16 11-16 176.92 173.85 11.41 165.51 0.017 downward MW-21SL Surficial 29 24-29 176.96 173.88 11.65 165.31 MW-21BR Bedrock 60 50-60 177.14 174.03 19.27 157.87 0.253 downward MW-22S Surficial 23 18-23 173.02 170.21 8.61 164.41 MW-22BR Bedrock 59 54-59 173.10 170.14 9.85 163.25 0.033 downward MW-23S Surficial 20 15-20 175.74 173.63 8.27 167.47 MW-23D Transition Zone 45 35-45 175.72 173.62 7.94 167.78 -0.014 upward MW-23BR Bedrock 65 60-65 175.60 173.49 7.69 167.91 0.006 upward PZ-01 Surficial 13 3-13 168.0 168.2 3.98 164.02 - PZ-02 Surficial 15 5-15 175.0 172.6 5.64 169.36 - PZ-03S Surficial 13 3-13 174.0 171.0 5.14 168.86 0.0020 PZ-03D Bedrock 60 45-60 173.9 171.1 4.95 168.95 upward PZ-04 Surficial 13 3-13 173.72 170.99 9.24 164.48 - - PZ-05 Surficial 13 3-13 169.80 170.0 2.22 167.58 PZ-06 Surficial 33 23-33 198.03 195.47 118.66 179.37 Prepared by: RKD Checked by. ARC Notes: BGS - Below ground surface BTOC - Below top of casing MSL - Mean sea level 'Well depths and water levels measured by SynTerra, July 12-13, 2016 P:\Duke Energy Progress. 1026\103. Cape Fear Ash Basin GW Assessment\19.EG_CSASUP\Tables\Table 1-5 Water Level Elevations and Vertical Hydraulic Gradients.xlsx Page 1 of 1 TABLE 1-6 2016 CAMA MONITORING WELL SAMPLE LIST CAPE FEAR STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, MONCURE, NC MONITORING WELL ID WELL LOCATION RATIONALE ZONE ABMW-03SR Surficial Within 1970 ash basin New well, establish baseline concentrations North of plant, east of BGMW-04 Surficial NPDES background well, evaluate representitavenes of background conditions 1956 ash basin North of plant, east of BGTMW-04 Bedrock NPDES background well, evaluate representitavenes of background conditions 1956 ash basin North east of 1985 MW-05BRR Bedrock New well, establish baseline concentrations ash basin MW-09 Bedrock East of plant CSA Background, establish dataset MW-09BR Bedrock East of plant CSA Background, establish dataset North of 1956 ash MW-10BRL Bedrock New well, establish baseline concentrations basin Southwest of 1985 MW-12 Surficial Monitor constituent migration for CAP development ash basin Southwest of 1985 MW-12BR Bedrock Monitor constituent migration for CAP development ash basin North of plant, east of MW-15SU Surficial CSA Background, establish dataset 1956 ash basin North of plant, east of MW-15SL Surficial CSA Background, establish dataset 1956 ash basin North of plant, east of MW-15BR Bedrock CSA Background, establish dataset 1956 ash basin MW-16S Surficial Northeast of plant CSA Background, establish dataset MW-16BR Bedrock Northeast of plant CSA Background, establish dataset North of 1985 ash MW-22S Surficial New well, establish baseline concentrations basin North of 1985 ash MW-22BR Bedrock New well, establish baseline concentrations basin MW-23S Surficial East of 1985 ash basin New well, establish baseline concentrations MW-23BR Bedrock East of 1985 ash basin New well, establish baseline concentrations Southwest of 1985 PZ-05 Surficial Monitor constituent migration for CAP development ash basin Prepared by: CJS Checked by: RKD P:\Duke Energy Progress.1026\103. Cape Fear Ash Basin GW Assessment\19.EG_CSASUP\Tables\Table 1-6 2016 CAMA Monitoring Well Sample List.xlsx Page 1 of 1 TABLE 1-7 GROUNDWATER MONITORING PARAMETERS CAPE FEAR STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, MONCURE, NC PARAMETER I RL JUNITS IMETHOD FIELD PARAMETERS pH NA SU Field Water Quality Meter Specific Conductance NA VS/Cm Field Water Quality Meter Temperature NA oC Field Water Quality Meter Dissolved Oxygen NA mg/L Field Water Quality Meter Oxidation Reduction Potential NA mV Field Water Quality Meter Eh NA mV Field Water Quality Meter Turbidity INA INTU IField Water Quality Meter INORGANICS Aluminum 0.005 mg/L EPA 200.7 or 6010C Antimony 0.001 mg/L EPA 200.8 or 6020A Arsenic 0.001 mg/L EPA 200.8 or 6020A Barium 0.005 mg/L EPA 200.7 or 6010C Beryllium 0.001 mg/L EPA 200.8 or 6020A Boron 0.05 mg/L EPA 200.7 or 6010C Cadmium 0.001 mg/L EPA 200.8 or 6020A Chromium 0.001 mg/L EPA 200.8 or 6020A Cobalt 0.001 mg/L EPA 200.8 or 6020A Copper 0.001 mg/L EPA 200.8 or 6020A Hexavalent Chromium 0.00003 mg/L EPA 218.7 Iron 0.01 mg/L EPA 200.7 or 6010C Lead 0.001 mg/L EPA 200.8 or 6020A Manganese 0.005 mg/L EPA 200.7 or 6010C Mercury 0.00005 mg/L EPA 245.1 Molybdenum 0.001 mg/L EPA 200.8 or 6020A Nickel 0.001 mg/L EPA 200.8 or 6020A Selenium 0.001 mg/L EPA 200.8 or 6020A Strontium 0.005 mg/L EPA 200.7 or 6010C Thallium (low level) 0.0002 mg/L EPA 200.8 or 6020A Vanadium (low level) 0.0003 mg/L EPA 200.8 or 6020A Zinc 10.005 1 mg/L JEPA 200.7 or 6010C RADIONUCLIDES Radium 226 1 pCi/L EPA 903.1 Modified Radium 228 1 pCi/L EPA 904.0/SW846 9320 Modified Uranium (233, 234, 236, 238) Varies by isotope µg/mL SW846 3010A/6020A ANIONS/CATIONS/OTHER Alkalinity (as CaCO3) 5 mg/L SM 2320B Bicarbonate 5 mg/L SM 2320B Calcium 0.01 mg/L EPA 200.7 Carbonate 5 mg/L SM 2320B Chloride 0.1 mg/L EPA 300.0 or 9056A Magnesium 0.005 mg/L EPA 200.7 or 6010C Nitrate + Nitrite 0.01 mg-N/L EPA 353.2 Potassium 0.1 mg/L EPA 200.7 Methane 0.01 mg/L RSK - 175 Modified Sodium 0.05 mg/L EPA 200.7 Sulfate 0.1 mg/L EPA 300.0 or 9056A Sulfide 0.1 mg/L SM 4500 S2 D Total Dissolved Solids 25 mg/L SM 2540C Total Organic Carbon 0.1 mg/L SM5310C/EPA9060A Total Suspended Solids 15 1 m /L ISM 2450D Prepared by: JAW Checked by: MCD Notes: 1. Inorganics analyzed for total and dissolved (0.45 micron) concentrations. NA indicates not applicable. P:\Duke Energy Progress. 1026\103. Cape Fear Ash Basin GW Assessment\19.EG_CSASUP\Tables\Table 1-7 Groundwater Monitoring Parameters w Duke Edits.xlsx Page 1 of 1 TABLE 2-1 NCDDEQ GLOBAL CSA COMMENTS FOR DEP SITES CAPE FEAR STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, MONCURE, 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\103. Cape Fear Ash Basin GW Assessment\19.EG_CSASUP\Tables\ Table 2-1 DEQ Global Comments.xlsx Page 1 of 4 TABLE 2-1 NCDDEQ GLOBAL CSA COMMENTS FOR DEP SITES CAPE FEAR STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, MONCURE, 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 >10 NTUs 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\103. Cape Fear Ash Basin GW Assessment\19.EG_CSASUP\Tab1es\ Table 2-1 DEQ Global Comments.xlsx Page 2 of 4 TABLE 2-1 NCDDEQ GLOBAL CSA COMMENTS FOR DEP SITES CAPE FEAR STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, MONCURE, 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 the ash basins, and background, below ash basin, immediate downgradient, and other downgradient of the ash basins 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\103. Cape Fear Ash Basin GW Assessment\19.EG_CSASUP\Tab1es\ Table 2-1 DEQ Global Comments.xlsx Page 3 of 4 TABLE 2-1 NCDDEQ GLOBAL CSA COMMENTS FOR DEP SITES CAPE FEAR STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, MONCURE, 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\103. Cape Fear Ash Basin GW Assessment\19.EG_CSASUP\Tables\ Table 2-1 DEQ Global Comments.xlsx Page 4 of 4 TABLE 3-1 DATA GAP SOIL ANALYTICAL RESULTS CAPE FEAR STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, MONCURE, NC Analytical Parameter Percent Moisture pH at 25 Degrees C Aluminum Antimony Arsenic Barium Beryllium Boron Cadmium Calcium Chloride Chromium Cobalt Copper Iron Lead Magnesium Manganese Mercury Molybdenum Nickel Nitrate (as N) Potassium Selenium Sodium Strontium Sulfate Thallium Total Organic Carbon Vanadium Zinc Reporting Units % Std. Units mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg PSRG Industrial Health NE NE 100000 94 3 44000 460 46000 200 NE NE NE 70 9400 100000 800 NE 5200 8 1200 4400 100000 NE 1200 NE 100000 NE 2.4 NE 1200 70000 PSRG Residential Health NE NE 15000 6.2 0.67 3000 32 3200 14 NE NE NE 4.6 620 11000 400 NE 360 1.9 78 300 26000 NE 78 NE 9400 NE 0.16 NE 78 4600 PSRG Protection of Groundwater NE NE NE 0.9 5.8 580 63 45 3 NE NE NE 0.9 700 ISO 270 NE 65 1 NE 130 NE NE 2.1 NE NE NE 0.28 NE 6 1200 Provisional Background NE NE 17100 0.145 8.1 224 NE 18.2 NE NE NE NE 31.9 NE 24500 NE NE 1140 NE NE NE NE NE 4.4 NE I NE NE 0.175 NE 1 55.1 NE Sample ID Sample Collection Date Analytical Results MW-22 SB(0-2) 06/10/2016 17.9 5.4 14400 <2.8 N2 1.5 116 0.44 <71.5 <0.17 1030 <301 D3 17.1 17.1 13.7 14900 11.6 1720 490 0.059 <0.72 8.3 <30.1 H3,D3 173 <1.4 158 14.4 <301 D3 <1.4 4640 50 33.9 MW-22 SB (3-4) 06/10/2016 18.7 5.2 15600 <2.8 N2 <1.4 48.4 0.27 <54.7 <0.17 473 <301 D3 17.8 8.2 14.1 16500 6.1 1890 370 0.014 <0.55 7.8 <30.1 H3,D3 139 <1.4 165 7.3 <301 D3 <1.4 1280 42 28.3 MW-22 5B (10-11) 06/11/2016 23.7 7.3 7550 <2.6 N2 <1.3 21 0.22 <61.5 <0.16 619 <325 D3,M1 7.5 3.2 5.1 7020 5 1240 56.8 <0.009 <0.61 4.9 <32.5 H3,D3 321 <1.3 <61.5 8.9 <325 D3 <1.3 <851 18.8 14.5 MW-22 SB (22-23) 06/10/2016 19.3 6 4100 <2.1 N2 <1.1 41.7 0.13 <2.8 <0.13 535 <305 D3 6.5 3.3 3.8 3270 4.3 928 66.8 <0.0087 <0.55 4.3 <30.5 H3,D3 218 <1.1 <55.4 5.1 <305 D3 <1.1 1930 14.8 11.3 MW-23 SB(0-2) 06/20/2016 18.2 5.6 25400 <2.5 N2,M6,R1 2.3 R1 82.3 0.33 <63 <0.15 R1 837 <297 D3 26.5 5.9 RI 13.7 32200 11.6 RI 1070 73 0.052 <0.63 7.5 <29.7 H3,D3 256 <1.3 RI <63 14.5 <297 D3 <1.3 Rl 1860 77.1 22.5 MW-23 SB (7-8) 06/20/2016 14.8 5.5 12600 <2.2 N2 1.8 37.2 0.25 <55.3 <0.13 573 <285 D3 13.6 NA 10.4 15600 8.7 2180 130 <0.0095 <0.55 6.4 <28.5 H3,D3 410 1.2 95.6 10.2 <285 D3 <1.1 <756 40.4 19.3 MW-23 SB(13-14) 06/20/2016 21.7 5.8 8930 <2.6 N2 <1.3 110 3.1 195 <0.16 2260 <318 D3 54.8 5.4 45.4 11500 5.3 2800 88.6 <0.0097 27.8 39.9 <31.8H3,D3 1970 <1.3 1630 46.4 <318 D3 <1.3 P<823 25.8 174 MW-23 SB(43-44) 06/20/2016 9.4 8.9 8390 <2.3 N2 1.8 56.30.25 <58.5<0.14 1980 <279 D3 7.9 NA 8.2 18900 10.7 4640 310 <0.0085 <0.58 11.3 <27.9 H3,D3 1100 <1.2 119 20.3 <279 D3 <12 12.9 58.7 Prepared by: BER Checked by: CIS Notes: 0 - Constituent exceeds Inactive Hazardous Sites Branch Preliminary Soil Remediation Goals (PSRG) Protection of Groundwater Table September 2015 and maximum concentration from background data set 0 - Total concentration less than appropriate comparative value (PSRG Protection of Groundwater or Provisional background) mg/kg = milligram per kilogram NE = Not established < = concentration not detected at or above reporting limit D3 = Sample was diluted due to the presence of high levels of non -target analytes or other matrix interference. H3 = Sample was received or analysis requested beyond the recognized method holding time. MI = Matrix spike recovery exceeded QC limits. Batch accepted based on laboratory control sample (LCS) recovery. M6 = Matrix spike and Matrix spike duplicate recovery not evaluated against control limits due to sample dilution. N2 = The lab does not hold TNI accreditation for this parameter. RI = RPD value was outride control limits. P:\Duke Energy Progress. 1026\103. Cape Fear Ash Basin GW Assessment\19.EG_CSASUP\Tables\Table 3-1 Data Gap Wells Soil Analytical Results.xlsx Page 1 of 1 TABLE 3-2 DATA GAP WELLS SOIL SPLP RESULTS CAPE FEAR STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, MONCURE, NC Analytical Parameter yt Aluminum Antimony y Arsenic Barium Beryllium y Boron Cadmium Calcium Chloride Chromium Cobalt Co Copper Iron Lead Magnesium Manganese Mercury Nickel Nitrate (as N) Potassium Selenium Sodium Strontium Sulfate Thallium Vanadium Zinc Reporting Units ug/L ug/L ug/L ug/L ug/L ug/L ug/L mg/L mg/L ug/L ug/L ug/L ug/L ug/L mg/L ug/L ug/L ug/L mg/L mg/L ug/L mg/L ug/L mg/L ug/L ug/L ug/L 15A NCAC 02L Standard NE 1* 10 700 4* 700 2 NE 250 10 1* 1000 300 is NE s0 1 100 NE NE 20 NE NE 250 0.2* 0.3* 1000 Surficial PBC NE NC 4.45 NE NC 378.1 NE NE 280 1.22 117.6 NE 45500 NC NE 4560 NE 9.33 NE NE NC 104 758 118.1 NC 2.758 NE Sample ID Sample Collection Date Analytical Results MW-22 SB (3-4) 06/10/2016 50900 M1 <0.5 2.2 230 1.6 <250 Ll <0.08 2.5 <5 48.7 14.4 43.8 1 40800 M1 1 8.3 5.9 670 <0.2 26 0.24 <5 6.1 6.7 Ll 30 7.9 1 0.27 83.5 100 MW-23 SB (7-8) 06/20/2016 43400 15 D3 15 D3 150 2.6 D3 1500 D3,L1 <0.8 D3 3.2 15.9 111 74.8 D3 12.5 D3 47.6 D3 I 50500 1 22.8 D3 3.7 170 <0.2 12 0.25 15 5.6 D3 6.3 Ll 48 2.8 B,M1 1 11 D3 180 D3 <50 Prepared by: BER, RKD Checked by: CIS - Comparative value F] - Exceeding the comparative value ug/L = Microgram per liter mg/L = Milligram per liter NC = Not calculated NE = Not established < = 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. MI = Matrix spike recovery exceeded QC limits. Batched accepted based on laboratory control sample (LCS) recovery. Ll = Analyte recovery in the laboratory control sample (LCS) was above QC limits. Results for this analyte in associated samples may be biased high. B = Analyte was detected in the associated method blank. D3 = Sample was diluted due to the presence of high levels of non -target analytes or other matrix interference. PBC = Provisional Background Concentration P:\Duke Energy Progress.1026\103. Cape Fear Ash Basin GW Assess ment\19.EG_CSASUP\Tables\Table 3-2 Data Gap Wells Soil SPLP Results.xlsx Page 1 of 1 TABLE 4-1 PROVISIONAL BACKGROUND CONCENTRATIONS - SURFICIAL GROUNDWATER CAPE FEAR STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, MONCURE, 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 2 13 13 100 6.1 6.4 6.1 - 6.4° Antimony Ng/I 1* 2 11 0 0 ND ND ND Arsenic Ng/I 10 2 11 5 45 1.91 2.86 4.454 Beryllium pg/I 4* 2 11 0 0 ND ND ND Boron Ng/I 700 2 11 5 45 81 140 378.1 Chloride mg/I 250 2 11 11 100 6.3 280 280" Chromium Ng/I 10 2 11 1 9 ND 1.22 1.22' Chromium (VI) pg/I 0.07^ 2 7 0 0 ND ND ND Cobalt Ng/I 1* 2 11 9 82 1 21.1 117.6 Iron Ng/I 300 2 11 11 100 93 45,500 45,5008 Lead Ng/I 15 2 11 0 0 ND ND ND Manganese pg/I 50 2 11 11 100 19 4,560 4560A Nickel Ng/I 100 2 11 7 64 1.27 3.14 9.33 Selenium pg/I 20 2 11 0 0 ND ND ND Sodium mg/I NE 2 11 11 100 15.5 104 104' Strontium pg/I NE 2 11 11 100 101 758 758° Sulfate mg/I 2 11 11 100 25 80 118.1 Thallium Ng/I 2 11 0 0 ND ND ND TDS mg/I 500 2 11 11 100 160 830 830" Vanadium pg/I 0.3* 2 11 9 82 0.322 1.1 2.758 Prepared by: MCD Checked by: HHS Notes: 0 = Indicates comparative value Wells included for background analysis: MW-15SL and MW-16S 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/I = milligrams per liter pg/I = micrograms per liter TDS = Total dissolved solids S.U. = Standard Unit A single value in the range column indicates only one detected concentration. = NC DHHS Health Screening Level *Interim Maximum Allowable Concentration (IMAC) of the 15A NCAC 02L Standard, Appendix 1, April 2013. —Provisional background concentration is the 95 Percent Upper Prediction Limit. 'Provisional background concentration is the maximum observed background concentration. P:\Duke Energy Progress. 1026\103. Cape Fear Ash Basin GW Assessment\19.EG_CSASUP\Tables\Table 4-1 Prov BG Concentrations - Surficial GW.xlsx Page 1 of 1 TABLE 4-2 PROVISIONAL BACKGROUND CONCENTRATIONS - BEDROCK GROUNDWATER CAPE FEAR STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, MONCURE, NC Analytical Parameter Reporting Units NC2L Standard Number of Wells Number of Data Sets Number of Detections Frequency ofDetections (�cti Bedrock Detected Background Concentration Minimum Detected Background Concentration Maximum provisional Background Concentration** pH S.U. 6.5-8.5 4 24 24 100 5.6 8.2 5.6 - 8.2 Barium pg/I 700 4 21 21 100 46 468 467.1 Boron Ng/I 700 4 21 3 14 51 53 57.79 Cadmium Ng/I 2 4 21 0 0 ND ND ND Chromium Ng/I 10 4 21 0 0 ND ND ND Chromium (VI) pg/I 0.07^ 4 12 1 8 ND 0.052 0,052' Cobalt ug/I 1* 4 21 4 19 1.02 6.7 8.384 Iron Ng/I 300 4 21 21 100 10 2,290 6,257 Manganese ug/I 50 4 21 21 100 46 905 897.4 Sodium mg/I NE 4 21 21 100 36.1 77.7 112.3 Strontium Irg/I NE 4 21 21 100 409 771 987.8 Sulfate mg/I 4 20 20 100 1.6 120 167.4 Thallium Ng/I 0.2* 4 21 1 5 ND 0.489 0.489A TDS mg/I 500 4 20 20 100 240 660 946 Vanadium pg/I 0.3* 4 21 8 38 0.372 2.83 3.843 Prepared by: MCD Checked by: HHS Notes: = Indicates comparative va Wells included for background analysis: MW-09, MW-09BR, MW-15BR, and MW-16BR 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/I = milligrams per liter pg/I = micrograms per liter TDS = Total dissolved solids S.U. = Standard Unit A single value in the range column indicates only one detected concentration. NC DHHS Health Screening Level *Interim Maximum Allowable Concentration (IMAC) of the 15A NCAC 02L Standard, Appendix 1, April 2013. **Provisional background concentration is the 95 Percent Upper Prediction Limit. °Provisional background concentration is the maximum observed background concentration. P:\Duke Energy Progress. 1026\103. Cape Fear Ash Basin GW Assessment\19.EG_CSASUP\Tables\Table 4-2 Prov BG Concentrations - Bedrock GW.xlsx Page 1 of 1 TABLE 4-3 SURFICIAL GROUNDWATER EXCEEDANCES INCORPORATING PROVISIONAL BACKGROUND CAPE FEAR STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, MONCURE, NC Analytical Parameter pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Barium Beryllium Boron Cadmium Chloride Chromium (VI) Chromium (VI) Sp eciation Chromium Cobalt Iron Lead Manganese Nickel Nitrate Selenium Sodium Strontium Sulfate Thallium Total Dissolved Solids Vanadium Reporting Units S.U. ft Deg C umhos/cm mg/I mV mV NTUs mg/I ug/I ug/I ug/I ug/I ug/I ug/I mg/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I mg/l ug/I mg/I ug/l mg/I ug/1 mg/I ug/l 15A NCAC 02L Standard 6.5-8.5 NE NE NE NE NE NE NE NE 1* 10 700 4* 700 2 250 0.07^ 0.07^ 10 1* 300 15 50 100 30 20 NE NE 250 0.2* Soo 0.3* Provisional Background 6.1-6.4 NE NE NE NE NE NE NE NE NE 4.454 NE NE 378.1 NE 280 NE NE 1.22 117.6 45500 NE 4560 9.33 NE NE 104 758 118.1 NE 830 2.758 Sample ID Sample Collection Date Field Parameters Analytical Results Background BGMW-4 1211512010 5.7 17.76 15 164 NM NM NM 4.6 NM <0.5 <5 36.8 NA <50 <0.08 17.2 NA NA <5 NA 112 <5 28.9 <5 6.2 <10 NA NA 26.1 <0.1 163 NA BGMW-4 0310712011 5.7 17.29 14 201 3.05 77 282 0.74 NM <0.5 <5 49.4 b NA <50 <0.08 13.4 b NA NA <5 NA 178 <5 10.6 <5 6.3 <10 NA NA 25.5 b <0.1 164 b NA BGMW-4 0610112011 5.7 16.72 21 229 2.44 -55 150 8.05 NM <0.5 <5 37.6 NA <50 0.26 15.2 NA NA <5 NA 162 b <5 16.9 <5 6 <10 NA NA 36.2 <0.1 183 NA BGMW-4 1011012011 5.6 17.89 19 202 2.4 -12 193 3.61 NM <0.5 <5 32.9 NA <50 <0.08 14.2 NA NA <5 NA 124 <5 13.4 <5 6.2 <10 NA NA 24.3 <0.1 165 NA BGMW-4 0311212012 5.4 16.76 18 327 5.93 -32 173 2.17 NM <0.5 <5 69 NA <50 0.097 10.5 NA NA <5 NA 150 b <5 83 <5 3.5 <10 NA NA 92.5 <0.1 229 NA BGMW-4 0611112012 5.6 17.16 18 221 2.13 -48 157 4.23 NM <0.5 <5 33.7 NA <50 <0.08 16.1 NA NA <5 NA 287 <5 8.9 <5 4.7 <10 NA NA 28.9 <0.1 172 NA BGMW-4 1011512012 5.5 1 18.38 18 182 2.4 199 404 5.61 NM <0.5 <5 46.5 NA <50 <0.08 11 NA NA <5 NA 3130 <5 61.2 <5 4.8 <10 NA NA 24.2 <0.1 89 NA BGMW-4 0310512013 5.5 17.35 14 191 3.48 163 368 5.89 NM <1 <1 28 NA <50 <1 9.1 NA NA <5 NA 120 <1 <5 <5 4 <1 NA NA 23 <0.2 160 NA BGMW-4 0610312013 5.4 16.68 18 251 3.58 231 436 4.16 NM <1 <1 39 NA <50 <1 12 NA NA <5 NA 129 <1 5 <5 4.4 <1 NA NA 49 <0.2 200 NA BGMW-4 0910312013 NM 16.70 NM NM NM NM NM NM NM NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA BGMW-4 0910412013 4.6 NM 19 67 1.3 168 NM 3.09 NM <0.34 <0.42 28.7 NA 8.4 j <0.23 13 NA NA 3.3 j NA 140 j <0. 085 3 j <1.5 NA <0.5 39.2 NA 30.5 <0.15 176 NA BGMW-4 1010812013 5.7 17.29 17 194 2.03 250 455 6.85 NM <1 <1 30 NA <50 <1 9.9 NA NA <5 NA 265 <1 8 <5 4.1 <1 NA NA 25 <0.2 160 NA BGMW-4 0311112014 5.7 13.34 16 213 2.5 219 424 8.7 NM <1 <1 33 NA <50 <1 9.9 NA NA <5 NA 494 <1 9 <5 4.3 <1 NA NA 29 <0.2 170 NA BGMW-4 0610912014 5.7 15.61 19 248 NM 197 402 5.6 NM <1 <1 35 NA <50 <1 12 NA NA <5 NA 156 <1 <5 <5 3.6 <1 NA NA 37 <0.2 170 NA BGMW-4 1011312014 5.1 17.15 19 182 0.79 225 430 3.18 NM <1 <1 28 NA <50 <1 9.1 NA NA <5 NA 128 <1 <5 <5 3.8 <1 NA NA 24 <0.2 160 NA BGMW-4 0310412015 5.9 14.49 14 189 1.33 70 275 8.11 NM <1 <I 31 NA <50 <1 8.3 NA NA <5 NA 360 <1 11 <5 3.4 <1 NA NA 25 <0.2 140 NA BGMW-4 0610812015 5.7 16.20 18 188 1 97 302 9.85 NM <1 <1 91 <1 482 <1 9.3 NA NA <5 <I 3810 1.22 49 <5 15 <I 18.1 NA 26 <0.2 150 NA BGMW-4 1010712015 5.5 16.78 18 163 1.12 217 422 1.12 NM <1 <I 29 <1 <50 <1 7.2 NA NA <5 <I 57 <1 <5 <5 17 <1 29.2 40 20 <0.2 130 0.668 BGMW-4 1210212015 5.6 14.97 16 221 1.07 222 427 5.75 NM <1 <I 30 <1 <50 <1 8.5 2.7 M6 NA 2.45 <I 314 <1 <5 <1 NA <1 35.8 39 32 <0.2 180 1.23 BGMW-4 0110612016 5.9 13.39 14 179 1.15 223 1 428 25 0 <1 <I 33 <1 <50 <1 8 2.1 NA 3.06 <1 1390 <1 11 1.16 NA <I 30.2 37 30 <0.2 150 2.51 BGMW-4 0310212016 5.7 14.05 15 225 1.63 1 215 420 9.9 0 <1 <1 32 <1 <50 <1 9.3 2.1 NA <5 <1 523 <1 7 <5 17 <1 38 40 33 <0.2 160 1.6 BGMW-4 0610212016 5.7 15.40 18 185 0.73 110 315 7.11 NM <1 <1 30 <1 <50 <1 9.6 2.6 NA <5 <1 306 <1 9 <5 16 <1 33.6 40 28 0.224 140 1.19 MW-15SL 05/29/2015 6.0 10.58 18 329 0.1 116 321 4.97 NM <1 2.4 76 <1 <50 <1 6.3 NA NA <1 21.1 45500 <1 4560 1.69 NA <1 15.6 133 80 <0.2 210 <0.3 MW-15SL 06/30/2015 6.1 10.44 19 282 0.3 -61 145 5.26 4.5 <1 1.91 69 <1 <50 <1 7.6 NA NA <1 12.3 38400 <1 3860 <1 NA <1 15.5 114 52 <0.2 190 0.383 MW-15SL 09/01/2015 6.3 12.05 20 278 1.05 -95 110 6.32 1.5 <1 2.36 69 <1 <50 <1 7.7 NA NA <1 11.8 37500 <1 3630 <1 NA <1 15.7 109 47 <0.2 160 0.48 MW-15SL 12/02/2015 6.3 8.85 17 261 0.6 -50 155 9.89 1 <1 2.4 71 <1 <50 <1 7.8 <0.03 NA <1 13.5 33900 <1 3220 <1 NA <1 17 101 46 <0.2 190 0.322 MW-15SL 01/06/2016 6.4 7.01 10 251 0.35 -89 116 8.27 3.5 <1 2.86 73 <1 <50 <1 7.6 <0.03 NA <1 13.3 37200 <1 3330 <1 NA <1 16.8 102 44 <0.2 160 <0.3 MW-15SL 03/02/2016 6.1 7.68 14 269 0.2 -29 176 9.7 6.5 <1 2.42 74 <1 <50 <1 7.3 <0.03 NA <1 16.9 35800 <1 2880 1.27 NA <1 16.8 101 47 <0.2 180 0.734 MW-15SL 06/02/2016 6.2 9.45 19 255 0.21 C -70 135 9.47 4 <1 2.54 75 <1 <50 <1 6.7 <3 D3 NA <1 17.5 36700 <1 2710 1.43 NA <1 17.2 98 43 <0.2 160 0.334 MW-15SU 0512912015 4.6 10.47 24 2530 2.22 371 576 4.1 NM <1 2.47 29 10 <50 1.21 51 NA NA 3.39 387 2490 2.48 33700 ISO NA 1.45 293 1270 1600 0.218 NA 4.57 MW-15SU 0910112015 4.8 8.84 19 1567 6.39 123 328 NM NM <1 NI 1.16 NI 29 Nl 3.16 Nl 54 Nl <I Nl NA NA NA <1 Nl 153 N1 1580 Nl <1 NI 16800 N1 99.3 Nl NA <1 NI 198 N1 793 N1 NA <0.2 NI NA 1.51 Nl MW-15SU 1210212015 6.2 5.83 15 2270 4 129 334 3.51 0 <1 <1 12 <1 116 <1 20 <0.03 NA <1 100 119 <1 9880 43 NA 1.58 409 743 1100 <0.2 1600 <0.3 MW-15SU 0110612016 6.7 5.70 11 1329 4.75 72 277 14.55 0 <1 <1 10 <1 105 <1 1.4 0.041 NA <1 48.9 73 <1 7480 21.4 NA 1.15 324 810 Soo <0.2 1300 <0.3 MW-15SU 0310212016 6.3 5.75 12 1687 3.2 185 390 2 0 <1 <I 11 <1 71 <1 11 <0.03 NA <I 50.6 46 <1 7970 1 19.6 NA <I 281 984 690 <0.2 1200 <0.3 MW-15SU 0310312016 NM NM NM NM NM NM NM NM NM NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA MW-15SU 0610212016 6.0 6.78 19 1290 1.22 C 122 327 9.87 3 <1 <1 16 <1 85 <1 7.6 0.035 NA <1 78.7 494 <1 9170 24.8 NA 1.05 185 932 510 <0.2 890 0.863 MW-16S 05/20/2015 6.2 2.19 17 978 16.6 111 316 4.26 NM <1 <1 160 <1 140 <1 210 NA NA <1 3.52 93 <1 202 3.14 NA <1 83.1 624 44 <0.2 630 1.1 NW-16S DUP 0512012015 6.2 2.19 17 978 16.6 ill 316 4.26 NM <1 <1 162 <1 140 <1 200 NA NA <1 3.9 72 <1 207 2.95 NA <I 82.2 627 44 <0.2 620 1.05 MW-16S 06/11/2015 6.1 3.81 17 1017 0.26 -72 133 3.59 NM NA NA NA NA NA NA NA NA <0.006 NA NA NA NA NA NA NA NA NA NA NA NA NA NA MW-16S 06/30/2015 6.1 3.77 21 1080 0.24 50 255 3.26 0.5 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA MW-16S 09/01/2015 6.2 5.83 19 1196 4.5 36 241 2 0.5 <1 <1 202 <1 81 <1 280 NA NA <1 2.49 385 <1 105 2.16 NA <1 104 758 25 <0.2 830 0.674 MW-16S 12/02/2015 6.1 1.60 16 1073 0.4 -5 201 2.1 0.15 <1 <1 182 <1 113 <1 250 <0.03 NA <1 1 260 <1 39 2.59 NA <1 98.3 619 32 <0.2 630 0.679 MW-16S O1/07/2016 6.2 0.96 12 1027 0.5 85 290 0.9 0 <1 <1 161 <1 113 <1 240 <0.03 NA 1.22 <1 184 <1 26 2.33 NA <1 92.8 587 43 <0.2 560 0.612 MW-16S 03/02/2016 6.2 1.10 14 967 1.26 117 322 1.4 0 <1 <1 155 <1 140 <1 210 <0.03 NA <1 <1 257 <1 19 1.82 NA <1 91.3 574 50 <0.2 550 0.782 MW-16S 06/02/2016 6.0 1.70 15 980 0.22 C 145 350 1.18 0 <1 <1 164 <1 150 <1 220 <0.03 NA <1 <1 149 <1 17 1.8 NA <1 91.8 640 44 <0.2 640 0.964 Surficial ABMW-1S 05/08/2015 11.2 27.41 27 788 0.35 -133 72 0.91 NM 1.85 27.7 94 <1 2930 <1 20 NA NA <1 <1 14 <1 <5 4.5 NA 3.4 22.1 655 130 <0.2 360 73.3 ABMW-1S 06/15/2015 9.7 28.86 25 55 0.4 -226 -21 1.91 NM NA NA NA NA NA NA NA NA 0.016 NA NA NA NA NA NA NA NA NA NA NA NA NA NA ABMW-1S 08/31/2015 8.7 29.51 23 524 0.54 -170 35 3.7 0 <1 26.4 38 <1 3760 <1 19 NA NA <1 <1 56 <1 262 4.43 NA <1 19.5 589 140 <0.2 370 2.54 ABMW-1S 12/01/2015 8.4 27.21 16 521 0.3 -222 -17 1 ND <1 20.8 42 <1 3960 <1 20 <0.03 NA <1 <1 98 <1 503 3.89 NA <1 19 631 140 <0.2 330 0.791 ABMW-1S O1/05/2016 8.4 26.82 15 499 0.3 -230 -25 0.97 NM <1 17.9 45 <1 3860 <1 21 <0.03 NA <1 <1 133 <1 611 4.07 NA <1 20.9 761 140 <0.2 360 0.662 ABMW-1S DUP O1/05/2016 8.4 26.82 15 499 0.3 -230 -25 0.97 NM <1 18.5 42 <1 3900 <1 21 <0.03 NA <1 <1 89 <1 527 4.02 NA <1 19.5 685 130 <0.2 380 0.45 ABMW-2SL 05/20/2015 6.2 9.16 17 1785 0.37 32 237 3.69 NM <10 <10 15 <10 <50 <10 6.6 NA NA <10 <10 3450 <10 519 <10 NA <10 9.47 30 14 <2 100 <3 ABM W-2SL 06/16/2015 6.6 10.85 20 213 0.45 -157 48 3.37 NM NA NA NA NA NA NA NA NA <0.005 NA NA NA NA NA NA NA NA NA NA NA NA NA NA ABMW-2SL O8/31/2015 6.7 12.22 20 222 0.7 -106 99 7.2 2 <1 3.79 23 <1 <50 <1 4.2 NA NA <1 3.52 7490 <1 710 6.1 NA <1 11.6 45 5.3 <0.2 120 <0.3 ABMW-2SL 12/01/2015 6.6 6.22 12 193 0.6 -107 98 1 2 <1 5.76 28 <1 <50 <1 4.7 <0.03 NA <1 2 12000 <1 777 2.02 NA <1 9.14 58 0.9 <0.2 91 <0.3 ABMW-2SL O1/05/2016 6.8 5.01 12 171 0.28 -128 77 2.5 3.5 <1 4.8 24 <1 <50 <1 4.7 <0.03 NA <1 1.02 10600 <1 642 1.74 NA <1 8.3 54 1.8 <0.2 110 <0.3 ABMW-2SU 05/20/2015 3.8 8.75 20 765 6.03 143 348 4.24 NM <1 <1 28 <1 198 <1 39 NA NA <1 19 15900 6.24 1540 14.8 NA <1 79.9 549 270 <0.2 440 <0.3 ABMW-2SU 06/16/2015 3.8 10.45 20 726 2.4 171 376 2.76 NM NA NA NA NA NA NA NA NA <0.005 NA NA NA NA NA NA NA NA NA NA NA NA NA NA ABMW-2SU O8/31/2015 4.2 1 11.61 20 676 0.5 225 430 6.7 1 <1 <1 30 <1 162 <1 41 NA NA <1 16.3 14900 3.34 1350 22.1 NA <1 86.2 414 370 0.238 450 0.737 ABMW-2SU 12/01/2015 3.9 5.71 11 736 3.2 241 446 1 2.5 <1 <1 26 <1 295 <1 41 <0.03 NA <1 15.4 1180 3.9 1400 16.8 NA <1 84.8 707 280 <0.2 460 <0.3 ABMW-2SU O1/05/2016 4.1 4.60 11 730 1.92 354 559 0.26 4 <1 <1 23 <1 267 <1 42 <0.03 NA <1 17.7 6140 3.19 1650 17.4 NA <1 81.7 712 330 <0.2 490 <0.3 ABMW-3S 05/27/2015 11.7 17.54 21 3186 1.22 -39 166 0.86 NM <1 1.09 638 <1 205 <1 18 NA NA 8.68 <1 21 <1 <5 5.72 NA 1.73 67.8 2050 58 0.22 780 2.53 P:\Duke Energy Progress.1026\103. Cape Fear Ash Basin GW Assessment\19.EG_CSASUP\Tables\Table 4-3 Surficial GW Exceedances Incoporating Provisional Background.xlsx Page 1 of 6 TABLE 4-3 SURFICIAL GROUNDWATER EXCEEDANCES INCORPORATING PROVISIONAL BACKGROUND CAPE FEAR STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, MONCURE, NC Analytical Parameter pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Barium Beryllium Boron Cadmium Chloride Chromium (VI) Chromium (VI) Sp eciation Chromium Cobalt Iron Lead Manganese Nickel Nitrate Selenium Sodium Strontium Sulfate Thallium Total Dissolved Solids Vanadium Reporting Units S.U. ft Deg C umhos/cm mg/1 mV mV NTUs mg/I ug/l ug/I ug/l ug/l ug/I ug/l mg/l ug/I ug/l ug/I ug/I ug/I ug/l ug/l ug/l mg/1 ug/I mg/I ug/1 mg/l ug/1 mg/l ug/1 15A NCAC 02L Standard 6.5-8.5 NE NE NE NE NE NE NE NE 1* 10 700 4* 700 2 250 0.11 0.07^ 10 1* 300 15 50 100 30 20 NE NE 250 0.2* Soo 0.3* Provisional Background 6.1-6.4 NE NE NE NE NE NE NE NE NE 4.454 NE NE 378.1 NE 280 NE NE 1.22 117.6 45500 NE 4560 9.33 NE NE 104 758 118.1 NE 830 2.758 Sample ID Sample Collection Date Field Parameters Analytical Results ABMW-3S 06/16/2015 12.1 18.17 25 3510 1 -235 -30 0.61 NM I NA NA NA NA NA NA NA NA 8.31 NA NA NA I NA NA NA NA NA NA NA NA NA NA NA ABMW-3S 08/31/2015 12.1 19.30 19 2620 0.42 -59 147 1.39 0 <1 1.56 669 <1 <50 <1 23 NA NA 3.97 1.14 115 <1 <5 16 NA 2.93 67.7 2780 17 <0.2 700 6.41 ABMW-3S 12/02/2015 11.8 16.90 17 2117 0.3 -160 45 1.5 NM <1 2.76 343 <1 122 <1 29 0.047 NA <1 <1 148 <1 <5 32.8 NA 2.6 70 1690 43 <0.2 570 14.7 ABMW-3S 01/05/2016 11.9 15.70 12 1760 0.4 -227 -22 4.5 0 <1 3.37 251 <1 189 <1 32 <0.03 NA <1 <1 156 <1 <5 36.6 NA 2.53 56.6 1420 70 <0.2 560 16.9 ABMW-3SR 03/03/2016 6.3 14.77 14 801 0.44 C -1 204 4 NM 2.6 31.9 94 <1 6020 <1 19 <0.03 NA <1 6.2 233 <1 3860 5.34 NA 2.04 29.2 2270 360 <0.2 610 18.6 ABMW-3SR 07/12/2016 6.0 16.80 19 817 0.2 4 209 3.49 NM 5.26 46.9 84 <1 5600 <1 18 <0.03 NA <1 5.11 320 <1 3620 3.57 NA <1 33 1980 360 <0.2 620 43.6 ABMW-4S 05/14/2015 6.2 19.53 18 413 0.24 -75 130 2.87 NM <1 1.62 94 <1 <50 <1 23 NA NA <1 1.02 18000 <1 1110 <1 NA <1 13.5 153 5 <0.2 230 0.328 ABMW-4S 06/16/2015 6.6 19.87 21 503 0.35 -109 96 3.5 NM NA NA NA NA NA NA NA NA 0.005 NA NA NA NA NA NA NA NA NA NA NA NA NA NA ABMW-4S 08/31/2015 6.5 20.68 19 509 2.9 -144 61 3.2 6 <1 3.36 110 <1 <50 <1 22 NA NA <1 <1 33200 <1 2030 <1 NA <1 15.7 204 0.4 <0.2 290 0.422 ABMW-4S DUP O8/31/2015 6.5 20.68 19 509 2.9 -144 61 3.2 6 <1 2.94 105 <1 <50 <1 22 NA NA <1 <1 31300 <1 1910 <1 NA <1 14.2 191 0.39 <0.2 270 0.336 ABMW-4S 12/01/2015 6.5 20.12 14 523 0.4 -71 134 3.4 1.5 <1 5.28 106 <1 64 <1 25 <0.03 NA <1 <1 12200 <1 1570 <1 NA <1 29 280 14 <0.2 280 0.358 ABMW-4S O1/05/2016 6.6 19.52 14 468 0.65 -86 120 0.1 2 <1 3.48 108 <1 <50 <1 24 <0.03 NA <1 <1 31200 <1 1670 <1 NA <1 15.3 187 4 <0.2 270 <0.3 ABMW-5S 06/02/2015 6.0 24.75 18 1991 0.33 -133 72 3.16 NM <1 <1 61 <1 187 <1 25 NA NA <1 327 99600 <1 32400 147 NA <1 43.4 1700 1400 0.306 1600 <0.3 ABMW-5S DUP 06/02/2015 6.0 24.75 18 1991 0.33 -133 72 3.16 NM <1 <1 61 <1 187 <1 25 NA NA <1 325 103000 <1 33700 149 NA <1 44 1700 1300 0.317 1700 <0.3 ABMW-5S 06/16/2015 6.3 25.30 20 2007 0.26 -190 15 2.03 NM NA NA NA NA NA NA NA NA <0.005 NA NA NA NA NA NA NA NA NA NA NA NA NA NA ABMW-5S 09/01/2015 5.7 25.87 20 1926 1 -67 138 5.44 2.5 <1 2.12 33 <1 150 <1 28 NA NA <1 339 142000 <1 35700 155 NA <1 43.3 1590 1300 <0.2 1800 0.848 ABMW-5S 12/03/2015 5.6 24.26 16 3535 0.3 34 239 4.49 2 <1 1.19 28 <1 147 <1 28 <0.03 NA <1 377 131000 <1 33900 190 NA <1 42.7 1680 1200 <0.2 1700 0.865 ABMW-5S O1/07/2016 5.3 22.43 16 1924 0.4 -67 138 0.79 3 <1 1.3 31 <1 156 <1 29 <0.03 NA <1 336 126000 <1 34400 162 NA <1 40.8 1750 1100 <0.2 1700 0.425 ABMW-5S DUP O1/07/2016 5.3 22.43 16 1924 0.4 -67 138 0.79 3 <1 1.18 27 <1 146 <1 30 <0.03 NA <1 337 128000 <1 34500 164 NA <1 42.8 1700 1300 <0.2 1700 0.371 CMW-1 12/17/2010 6.3 8.01 15 426 NM NM NM 5.07 NM <0.5 <5 209 NA 1810 <0.08 16.8 NA NA <5 NA 51100 <5 1370 <5 <0.1 <10 NA NA <5 <0.1 209 NA CMW-1 03/08/2011 6.5 7.30 14 500 0.68 -87 118 13.7 NM <0.5 <5 208 NA 1790 <0.08 18.2 b NA NA <5 NA 50300 <5 1790 <5 <0.1 <10 NA NA <5 <0.1 232 b NA CMW-1 06/03/2011 6.1 8.12 17 445 0.89 -99 106 6.66 NM <0.5 <5 192 NA 1840 <0.08 17 NA NA <5 NA 51500 <5 1350 <5 <0.1 <10 NA NA <5 <0A 188 NA CMW-1 10/11/2011 6.2 8.77 19 499 NM NM NM 8.72 NM <0.5 <5 208 NA 2910 <0.08 13.6 NA NA <5 NA 46300 <5 1180 <5 <0.2 <10 NA NA 23.1 <0.1 259 NA CMW-1 03/12/2012 6.4 7.42 17 438 0.41 -92 113 27.1 NM <0.5 <5 157 NA 2030 <0.08 14.9 NA NA <5 NA 41700 <5 1050 <5 <0.2 <10 NA NA <5 <0.1 188 NA CMW-1 DUP 03/12/2012 6.4 7.42 17 438 0.41 -92 113 27.1 NM <0.5 <5 163 NA 2080 <0.08 14.7 NA NA <5 NA 43400 <5 1080 <5 <0.2 <10 NA NA <5 <0.1 182 NA CMW-1 06/12/2012 6.2 8.32 19 497 1.12 -108 97 14 NM <0.5 <5 203 NA 2300 <0.08 1.8 NA NA <5 NA 54600 <5 1160 <5 <0.02 <10 NA NA <2 <0.1 205 NA CMW-1 10/15/2012 6.3 8.45 21 508 0.39 -86 119 8.87 NM <0.5 <5 201 NA 2950 0.15 13.3 NA NA <5 NA 42200 <5 1000 <5 <0.02 <10 NA NA 36.3 <0.1 242 NA CMW-1 03/04/2013 6.2 6.51 13 430 0.29 -53 152 24 NM <1 <1 153 NA 1880 <1 28 NA NA <5 NA 28100 <1 1610 6 <0.023 <1 NA NA 10 <0.2 240 NA CM W-1 06/04/2013 6.2 7.85 18 527 0.3 -40 165 10 NM <1 <1 205 NA 2160 <1 17 NA NA <5 NA 50000 <1 1250 <5 <0.023 <1 NA NA <0.1 <0.2 270 NA CMW-1 10/09/2013 6.3 8.51 19 514 0.18 -83 122 22.8 NM <1 1.05 217 NA 2550 2.41 13 NA NA <5 NA 54200 <1 1190 <5 <0.023 <1 NA NA 0.11 <0.2 220 NA CMW-1 03/12/2014 6.0 4.99 13 398 0.7 23 228 9 NM <1 <1 174 NA 1020 <1 31 NA NA <5 NA 34100 <1 2750 6 <0.023 <1 NA NA 11 <0.2 200 NA CMW-1 06/09/2014 6.2 8.21 22 528 0.2 -77 128 9.7 NM <1 <1 225 NA 1600 <1 15 NA NA <5 NA 59600 <1 1300 5 <0.023 <1 NA NA <0.1 <0.2 280 NA CMW-1 DUP 06/09/2014 6.2 8.21 22 528 0.2 -77 128 9.7 NM <1 <1 225 NA 1560 <1 15 NA NA <5 NA 60900 <1 1300 <5 <0.023 <1 NA NA <0.1 <0.2 280 NA CMW-1 10/14/2014 6.1 8.60 21 485 0.15 -94 111 8.4 NM <1 <1 187 NA 2750 <1 12 NA NA <5 NA 38500 <1 899 6 <0.023 <1 NA NA 26 <0.2 240 NA CMW-1 03/04/2015 6.1 5.80 16 400 0.08 -54 151 13.2 NM <1 <1 156 NA 1380 <1 29 NA NA <5 NA 28700 <1 1390 5 <0.023 <1 NA NA 2.1 <0.2 200 NA CMW-1 06/09/2015 6.2 8.26 20 517 0.16 -189 16 8.84 NM <1 <1 229 <1 1 1830 <1 18 NA NA <5 <1 52700 <1 1250 <5 <0.1 <1 24.1 NA <0.1 <0.2 240 NA CMW-1 06/17/2015 6.4 8.60 21 484 0.2 -81 124 22.5 NM NA NA NA NA NA NA NA NA <0.005 NA NA NA NA NA NA NA NA NA NA NA NA NA NA CMW-1 10/07/2015 6.0 6.62 20 319 1.7 -8 197 15.2 NM <1 1.36 156 <1 1530 <1 19 NA NA <5 1.36 16900 <1 647 7 <0.1 <1 21.3 191 35 <0.2 230 3.48 CMW-1 12/02/2015 6.1 6.65 18 489 0.3 -97 108 9.1 2 <1 <1 172 <1 1060 <1 64 <0.03 NA 1.7 5.66 30600 <1 1990 1.58 NA <1 37.2 228 11 0.207 290 5.02 CMW-1 03/01/2016 6.2 5.78 16 531 0.3 -66 139 4.1 5 <1 <1 210 <1 1760 <1 38 NA NA <5 <1 37700 1 <1 1850 <5 <0.1 <1 30 284 1.9 <0.2 260 1.83 CMW-1 06/01/2016 6.4 7.28 21 407 0.15 -101 104 8.18 NM <1 <1 164 <1 1760 <1 16 NA NA <5 <1 38100 <1 1030 <5 <0.1 <1 21.3 236 3.1 <0.2 250 1.67 CMW-2 12/16/2010 5.5 10.71 14 782 NM NM NM 2.7 NM <0.5 <5 41 NA 107 0.15 1 12.6 NA NA <5 NA 2290 <5 5480 24.9 <0.1 <10 NA NA 449 <0.1 735 NA CMW-2 03/07/2011 5.6 10.29 13 933 2.5 88 293 3.02 NM <0.5 <5 33.2 b NA 96.5 0.2 13.6 b NA NA <5 NA 231 <5 5160 31.8 <0.1 <10 NA NA 571 1 <0.1 797 NA CMW-2 06/02/2011 5.4 11.03 18 888 0.43 -69 136 3.35 NM <0.5 <5 27.1 NA 97.2 0.24 13.6 NA NA <5 NA 429 b <5 5240 36.4 <0.1 <10 NA NA 463 <0.1 747 NA CMW-2 10/11/2011 5.4 12.20 18 880 0.83 -64 141 2.66 NM <0.5 <5 33.3 NA 114 0.2 14.8 NA NA <5 NA 1830 <5 5640 37.9 <0.2 <10 NA NA 8.9 <0.1 687 NA CMW-2 03/13/2012 5.5 10.38 15 904 0.99 -43 162 0.71 NM <0.5 <5 28.3 NA 122 <0.08 17.5 NA NA <5 NA 609 b <5 3110 31.3 <0.2 <10 NA NA 455 <0.1 803 NA CMW-2 06/12/2012 5.2 11.13 18 1056 1.65 -52 153 3.93 NM <0.5 <5 30.4 NA 112 <0.08 20.8 NA NA <5 NA 1730 <5 4120 45.5 <0.02 <10 NA NA 260 <0.1 877 NA CMW-2 DUP 06/12/2012 5.2 11.13 18 1056 1.65 -52 153 3.93 NM <0.5 <5 30.1 NA 108 0.091 19.9 NA NA <5 NA 1600 <5 3690 47.8 <0.02 <10 NA NA 556 <0.1 882 NA CMW-2 10/16/2012 6.0 12.45 17 1088 0.97 -42 163 2.03 NM <0.5 <5 32.8 NA 117 <0.08 21.2 NA NA <5 NA 5950 <5 8300 37.2 0.052 b <10 NA NA 591 <0.1 898 NA CMW-2 03/05/2013 5.1 10.12 13 1278 1.03 172 377 1.48 NM <1 <1 27 NA 93 <1 18 NA NA <5 NA 422 <1 3180 42 <0.023 <1 NA NA 630 <0.2 1100 NA CMW-2 06/04/2013 5.3 10.45 19 1289 0.6 123 328 9.87 NM <1 <1 31 NA 93 <1 20 NA NA <5 NA 3910 <1 5580 50 <0.023 <1 NA NA 630 <0.2 1100 NA CMW-2 10/08/2013 5.3 11.30 17 1113 0.53 134 339 6.38 NM <1 <1 24 NA 98 <1 19 NA NA <5 NA 1960 <1 2280 57 <0.023 <1 NA NA 550 <0.2 930 NA CMW-2 03/12/2014 5.3 1 7.01 14 1575 2.5 285 490 5.1 NM <1 <1 26 NA 115 <1 49 NA NA <5 NA 320 <1 3690 59 0.02 <1 NA NA 790 <0.2 1300 NA CMW-2 06/10/2014 5.4 10.20 19 1179 0.23 126 331 20 NM <1 <1 23 NA 90 <1 33 NA NA <5 NA 2230 <1 4440 52 <0.023 <1 NA NA 530 <0.2 960 NA CMW-2 10/14/2014 5.2 11.24 19 904 0.37 153 358 3.84 NM <1 <1 21 NA 88 <1 22 NA NA <5 NA 1390 2.17 4700 59 0.03 <1 NA NA 440 <0.2 780 NA CMW-2 03/04/2015 5.3 8.70 13 965 0.32 224 429 9.08 NM <1 <1 20 NA 71 <1 20 NA NA <5 NA 792 <1 6380 71 <0.023 <1 NA NA 430 <0.2 770 NA CMW-2 06/09/2015 5.3 10.52 19 947 0.57 -43 162 1.9 NM <1 <1 23 <1 78 <1 28 NA NA <5 1.82 796 <1 6760 72 <0.5 <1 36.2 NA 480 <0.2 780 NA CMW-2 10/07/2015 5.3 10.43 17 1008 1.26 100 1 305 6.92 NM <1 <1 23 <1 84 <1 21 NA NA <5 24.2 2960 <1 7670 69 <0.1 <1 35.5 983 450 <0.2 790 0.679 CMW-2 DUP 10/07/2015 5.3 10.43 17 1008 1.26 100 305 6.92 NM <1 <1 24 <1 84 <1 20 NA NA <5 21.1 3090 1 <1 8020 70 <0.1 <1 36.6 1050 480 <0.2 790 0.74 CMW-2 12/02/2015 5.1 8.98 17 963 0.3 107 312 9.6 1 <1 <1 20 <1 80 <1 18 <0.03 NA <1 7.58 1660 <1 7240 71.6 NA <1 33.4 978 450 <0.2 780 0.604 CMW-2 01/07/2016 5.5 7.37 14 967 0.3 169 374 8.9 1.5 <1 <1 I 21 <1 79 <1 60 <0.03 NA <1 16.8 1650 <1 7430 70.4 NA <1 35.8 1030 510 <0.2 800 0.482 CMW-2 03/01/2016 5.3 7.66 17 947 0.13 118 323 9.9 0 <1 <1 21 <1 72 <1 20 NA NA <5 20.4 2580 <1 7670 76 <0.5 <1 34.2 1020 440 <0.2 770 0.319 P:\Duke Energy Progress.1026\103. Cape Fear Ash Basin GW Assessment\19.EG_CSASUP\Tables\Table 4-3 Surficial GW Exceedances Incoporating Provisional Background.xlsx Page 2 of 6 TABLE 4-3 SURFICIAL GROUNDWATER EXCEEDANCES INCORPORATING PROVISIONAL BACKGROUND CAPE FEAR STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, MONCURE, NC Analytical Parameter pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Barium Beryllium Boron Cadmium Chloride Chromium (VI) Chromium (VI) Sp eciation Chromium Cobalt Iron Lead Manganese Nickel Nitrate Selenium Sodium Strontium Sulfate Thallium Total Dissolved Solids Vanadium Reporting Units S.U. ft Deg C umhos/cm mg/1 mV mV NTUs mg/I ug/l ug/I ug/l ug/l ug/I ug/l mg/l ug/I ug/l ug/I ug/I ug/I ug/l ug/l ug/l mg/1 ug/I mg/I ug/1 mg/l ug/1 mg/l ug/1 15A NCAC 02L Standard 6.5-8.5 NE NE NE NE NE NE NE NE 1* 10 700 4* 700 2 250 0.11 0.07^ 10 1* 300 15 50 100 30 20 NE NE 250 0.2* Soo 0.3* Provisional Background 6.1-6.4 NE NE NE NE NE NE NE NE NE 4.454 NE NE 378.1 NE 280 NE NE 1.22 117.6 45500 NE 4560 9.33 NE NE 104 758 118.1 NE 830 2.758 Sample ID Sample Collection Date Field Parameters Analytical Results CMW-2 06/01/2016 5.3 9.67 17 827 0.2 1 162 367 9.53 NM 11 <1 19 <1 57 <1 20 NA NA <5 13.2 2260 1 1 8270 76 <0.5 <1 29.7 900 410 <0.2 700 0.392 CMW-2 DUP 06/01/2016 5.3 9.67 17 827 0.2 162 367 9.53 NM <1 <1 18 <1 <50 <1 21 NA NA <5 13.6 2220 <1 7990 74 <0.5 <1 28.6 866 410 <0.2 690 0.416 CMW-3 12/15/2010 6.2 15.66 14 298 NM NM NM 8.1 NM <0.5 <5 47.7 NA 714 <0.08 11.9 NA NA <5 NA <50 <5 1220 <5 <0.1 22.6 NA NA 114 <0.1 223 NA CMW-3 03/07/2011 6.1 15.52 13 341 3.52 107 312 0.75 NM <0.5 <5 51.7 b NA 678 <0.08 10.1 b NA NA <5 NA <50 <5 257 <5 <0.1 41.2 NA NA 64 <0.1 231 b NA CMW-3 06/02/2011 6.0 15.64 17 352 0.84 -71 134 6.3 NM <0.5 <5 49.9 NA 761 0.25 9.3 NA NA <5 NA <50 <5 282 <5 <0.1 39 NA NA 72.3 <0.1 221 NA CMW-3 10/10/2011 6.0 16.63 18 709 0.97 8 213 2.3 NM <0.5 <5 54.9 NA 1230 <0.08 12.1 NA NA <5 NA 153 <5 6160 <5 <0.2 37.7 NA NA 182 <0.1 472 NA CMW-3 03/13/2012 6.3 15.66 15 515 1.29 -80 125 4.91 NM <0.5 <5 57.4 NA 1030 <0.08 11.6 NA NA <5 NA 602 b <5 1500 <5 <0.2 36.8 NA NA 112 <0.1 304 NA CMW-3 06/11/2012 6.1 16.06 17 757 1.3 -100 105 4.44 NM <0.5 <5 59.7 NA 1070 0.089 12.6 NA NA <5 NA 1910 <5 3120 <5 <0.02 27.6 NA NA 153 <0.1 396 NA CMW-3 10/16/2012 6.1 16.83 16 1047 1.09 10 215 8.93 NM <0.5 <5 46.4 NA 1260 0.1 17.7 NA NA <5 NA 453 <5 9750 <5 <0.02 20.6 NA NA 388 <0.1 729 NA CMW-3 03/05/2013 6.0 16.01 14 1172 0.78 20 225 1.62 NM <1 <1 65 NA 1180 <1 15 NA NA <5 NA 124 <1 4670 <5 <0.023 40.7 NA NA 250 <0.2 630 NA CMW-3 06/04/2013 6.1 15.70 17 1446 0.7 55 260 3.7 NM <1 <1 84 NA 1320 2.39 16 NA NA <5 NA 210 <1 3670 <5 0.04 12.1 NA NA 250 <0.2 1 600 NA CMW-3 10/08/2013 6.2 16.05 17 779 0.91 124 329 1.17 NM <1 <1 65 NA 1300 <1 17 NA NA <5 NA 95 <1 2360 <5 <0.023 34.5 NA NA 220 <0.2 520 NA CMW-3 03/12/2014 6.0 13.64 14 693 2.7 194 399 0.9 NM <1 <1 66 NA 1020 <1 20 NA NA <5 NA 55 <1 1650 <5 <0.023 66.6 NA NA 170 <0.2 380 NA CMW-3 06/10/2014 6.1 14.66 18 481 4.3 186 391 5.1 NM <1 <1 51 NA 815 <1 19 NA NA <5 NA 27 <1 959 <5 <0.023 55.4 NA NA 130 <0.2 330 NA CMW-3 10/14/2014 5.9 16.02 19 572 1.07 194 399 1.56 NM <1 <1 44 NA 982 <1 25 NA NA <5 NA 24 <1 1810 <5 0.06 20.3 NA NA 140 <0.2 360 NA CMW-3 03/04/2015 6.2 14.70 12 851 0.82 74 279 2.51 NM <1 <1 53 NA 969 <1 34 NA NA <5 NA 129 <1 3200 <5 <0.023 8.9 NA NA 170 <0.2 450 NA CMW-3 06/09/2015 6.1 14.98 19 442 2.74 31 236 1.54 NM <1 <1 55 <1 653 <1 36 NA NA <5 <1 55 <1 85 <5 <0.2 46.8 19.6 NA 87 <0.2 250 NA CMW-3 10/07/2015 6.0 15.78 17 700 0.8 67 272 3.13 NM <1 <1 55 <1 834 <1 32 NA NA <5 2.02 109 <1 2060 <5 <0.1 16.7 21.5 873 130 <0.2 380 0.7 CMW-3 12/03/2015 6.2 14.45 15 1130 1 62 267 7.34 0 <1 <1 60 <1 825 <1 32 0.035 NA <1 2.5 265 <1 1870 1.37 NA 4.44 20.8 882 150 <0.2 360 1.21 CMW-3 01/07/2016 5.4 12.55 15 310 3.3 -33 172 2.24 0 <1 <1 55 <1 447 <1 28 0.54 NA 1.22 <1 29 <1 68 2.37 NA 9.18 18.9 404 89 <0.2 250 0.454 CMW-3 03/01/2016 5.7 12.60 14 330 5.2 220 425 0.5 0 <1 <1 60 <1 443 <1 29 NA NA <5 <1 11 <1 82 <5 <0.5 22.4 19.1 485 84 <0.2 230 0.483 CMW-3 06/01/2016 6.1 13.92 16 512 3.38 167 372 0.86 NM <1 <1 52 <1 541 <1 23 NA NA <5 1.9 30 <1 1720 <5 <0.5 20.6 18.9 719 130 <0.2 330 0.567 CMW-5 12/16/2010 5.9 14.35 12 130 NM NM NM 42.7 NM <0.5 <5 69.1 NA 169 <0.08 10.6 NA NA <5 NA 1860 <5 217 <5 <0.1 <10 NA NA 29.8 <0.1 193 NA CMW-5 03/07/2011 6.4 12.67 13 209 3.6 84 289 3.77 NM <0.5 <5 53.2 b NA 152 <0.08 10 b NA NA <5 NA 87.8 <5 232 <5 <0.1 <10 NA NA 33.6 b <0.1 216 b NA CMW-5 06/03/2011 6.1 13.21 17 204 1.91 -55 151 53.1 NM <0.5 <5 65.9 NA 142 <0.08 10 NA NA <5 NA 2750 <5 211 <5 <0.1 <10 NA NA 32.7 <0.1 190 NA CMW-5 10/10/2011 6.3 16.08 20 242 1.51 -1 204 18 NM <0.5 <5 63.3 NA 120 <0.08 10.7 NA NA <5 NA 1960 <5 182 <5 <0.2 <10 NA NA 25.9 <0.1 200 NA CMW-5 03/12/2012 6.6 12.15 17 226 3.47 -59 146 93.9 NM <0.5 <5 65.2 NA 187 <0.08 10 NA NA <5 NA 3360 <5 94 <5 <0.2 <10 NA NA 30.6 <0.1 181 NA CMW-5 06/11/2012 6.4 14.14 19 260 2.63 -29 176 20.4 NM <0.5 <5 59 NA 180 <0.08 10.7 NA NA <5 NA 834 <5 57.4 <5 0.048 b <10 NA NA 35.2 <0.1 197 NA CMW-5 10/15/2012 6.3 16.73 19 239 2.11 131 336 13.5 NM <0.5 <5 58.7 NA 143 0.1 10 NA NA <5 NA 1530 <5 41.8 <5 <0.02 <10 NA NA 32.5 <0.1 218 NA CMW-5 03/05/2013 6.1 13.04 12 221 4.03 139 344 9.07 NM <1 <1 55 NA 246 <1 8.1 NA NA <5 NA 316 <1 15 <5 0.03 <1 NA NA 32 <0.2 200 NA CMW-5 06/03/2013 6.0 13.38 19 251 2.85 201 406 8.55 NM <1 <1 64 NA 249 <1 10 NA NA <5 NA 362 <1 21 <5 0.09 <1 NA NA 38 <0.2 210 NA CMW-5 10/08/2013 6.3 15.25 16 281 0.97 246 451 46.3 NM <1 <1 70 NA 151 <1 11 NA NA <5 NA 2910 1.22 46 <5 0.08 <1 NA NA 34 <0.2 330 NA CMW-S 06/09/2014 6.2 14.43 19 193 2.2 186 391 52 NM <1 <1 54 NA 165 <1 9.6 NA NA <5 NA 2800 1.22 40 <5 0.03 <1 NA NA 29 <0.2 210 NA CMW-5 10/13/2014 5.9 16.56 20 222 0.94 219 424 142 NM <1 <1 81 NA 283 <1 9.8 NA NA 6 NA 5650 2.53 96 <5 0.04 <1 NA NA 36 <0.2 60 NA CMW-5 03/04/2015 6.1 11.90 15 230 3.77 89 294 35.6 NM <1 <1 72 NA 359 <1 10 NA NA <5 NA 2650 1.2 34 <5 0.03 <1 NA NA 43 <0.2 240 NA CMW-5 06/09/2015 5.9 15.11 20 201 3.32 -14 191 47.6 NM <1 <1 32 <1 <50 <1 8.8 NA NA <5 <1 99 <1 <5 <5 <0.1 <1 34.7 NA 47 <0.2 200 NA CMW-5 10/07/2015 6.1 16.52 19 292 3.8 190 395 714 NM <10 <10 147 <10 294 <10 17 NA NA 15 <10 14700 <10 158 7 0.26 <10 38.1 167 42 <2 290 28.9 CMW-5 12/02/2015 6.2 13.08 17 436 2.91 193 398 96.85 NM <1 <1 79 <1 198 <1 21 0.4 M1 NA 2.22 <1 2940 2.9 34 1.3 NA <1 57.3 151 42 <0.2 410 6.02 CMW-5 01/07/2016 6.2 12.25 11 152 2.22 214 419 683 0 <1 2.12 160 3.41 59 <1 7.5 0.15 NA 13.3 4.8 22600 28.1 346 7.41 NA <1 25.4 218 20 <0.2 580 29 CMW-5 03/02/2016 6.0 12.43 14 187 4.08 186 391 66.1 0 <1 <1 60 <1 340 <1 8.9 NA NA <5 <1 3060 1.48 36 <5 <0.1 <1 24.1 95 35 <0.2 190 8.7 CMW-S 06/02/2016 5.5 13.20 22 112 0.76 175 380 13 NM <1 <1 29 <1 <50 <I 4.1 NA NA <5 <1 837 <1 16 <5 0.19 <1 12.6 71 10 <0.2 93 2.85 CMW-6 12/15/2010 6.7 3.95 13 529 NM NM NM 8.91 NM <0.5 <5 18.1 NA 704 <0.08 37.3 NA NA <5 NA 696 <5 178 <5 <0.1 <10 NA NA 181 <0.1 419 NA CMW-6 03/08/2011 6.9 3.78 9 774 1.97 87 292 1.35 NM <0.5 <5 17.6 b NA 492 0.58 39.9 NA NA <5 NA <50 <5 195 <5 <0.1 <10 NA NA 169 <0.1 508 NA CMW-6 DUP 03/08/2011 6.9 3.78 9 774 1.97 87 292 1.35 NM <0.5 <5 17.7 b NA 499 0.38 44.5 NA NA <5 NA <50 <5 194 <5 <0.1 <10 NA NA 173 <0.1 511 NA CMW-6 06/02/2011 6.8 3.92 19 700 0.39 -72 133 1.93 NM <0.5 <5 15.1 NA 624 <0.08 39.7 NA NA <5 NA <50 <5 179 <5 <0.1 <10 NA NA 194 <0.1 424 NA CMW-6 10/11/2011 7.0 4.19 19 586 2.06 45 250 1.46 NM <0.5 <5 14.4 NA 874 <0.08 31 NA NA <5 NA 98.8 <5 135 <5 <0.2 <10 NA NA 14.9 <0.1 396 NA CMW-6 03/13/2012 7.1 3.99 15 582 1.25 -61 144 1.75 NM <0.5 <5 14.8 NA 780 <0.08 35.5 NA NA <5 NA 95 b <5 17.6 <5 <0.2 <10 NA NA 181 <0.1 411 NA CMW-6 06/12/2012 6.7 4.44 19 800 0.92 -37 168 2.46 NM <0.5 <5 21.8 NA 722 <0.08 49.1 NA NA <5 NA 91.9 <5 362 <5 0.043 b <10 NA NA 210 <0.1 509 NA CMW-6 10/15/2012 7.0 4.65 19 628 0.57 53 258 4.9 NM <0.5 <5 14.5 NA 1010 <0.08 32.2 NA NA <5 NA 202 <5 46.7 <5 <0.02 <10 NA NA 139 <0.1 375 NA CMW-6 03/04/2013 7.0 3.66 12 646 1.55 100 305 1.75 NM <1 <1 14 NA 825 <1 28 NA NA <5 NA 54 <1 29 <5 <0.023 <1 NA NA 160 <0.2 410 NA CMW-6 06/03/2013 6.7 3.99 18 615 0.7 183 388 2.26 NM <1 <1 16 NA 1040 <1 31 NA NA <5 NA 84 <1 58 <5 <0.023 <1 NA NA 170 <0.2 390 NA CMW-6 10/08/2013 7.1 4.17 18 627 0.38 191 396 2.87 NM <1 <1 13 NA 1100 <1 30 NA NA <5 NA 69 <1 29 <5 <0.023 <1 NA NA 160 <0.2 410 NA CMW-6 03/13/2014 6.9 3.78 11 581 0.7 48 253 0.5 NM <1 <1 12 NA 1320 <1 30 NA NA <5 NA 24 <1 27 <5 <0.023 <1 NA NA 150 <0.2 380 NA CMW-6 06/10/2014 6.8 4.76 17 578 0.2 7 212 4.2 NM <1 <1 12 NA 1390 <1 27 NA NA <5 NA 104 <1 37 <5 <0.023 <1 NA NA 140 <0.2 370 NA CMW-6 10/13/2014 6.7 4.95 20 584 0.32 -21 184 1.11 NM <1 <1 11 NA 1210 <1 30 NA NA <5 NA 152 <1 34 <5 <0.023 <1 NA NA 150 <0.2 390 NA CMW-6 DUP 10/13/2014 6.7 4.95 20 584 0.32 -21 184 1.11 NM <1 <1 11 NA 1290 <1 30 NA NA <5 NA 152 <1 37 <5 0.05 <1 NA NA 150 <0.2 390 NA CMW-6 03/04/2015 6.2 4.09 15 462 0.26 9 214 44.4 NM <1 <1 21 NA 413 <1 23 NA NA <5 NA 5050 <1 908 <5 0.05 <1 NA NA 110 <0.2 330 NA CMW-6 06/09/2015 6.7 4.94 18 623 0.3 -189 16 6.27 NM <1 <1 18 <1 1560 <1 16 NA NA <5 1.14 556 <1 204 <5 <0.5 <1 107 NA 160 <0.2 380 NA CMW-6 06/18/2015 6.6 5.16 20 657 0.28 -168 37 1.89 NM NA NA NA NA NA NA NA NA 0.007 NA NA NA NA NA NA NA NA NA NA NA NA NA NA CMW-6 10/06/2015 6.0 4.43 19 399 0.47 142 347 178.7 NM <10 <10 52 <10 677 <10 20 NA NA 13 <10 13700 <10 431 7 <0.1 <10 80.2 62 120 <2 150 35.4 CMW-6 12/01/2015 6.5 3.82 15 515 0.42 40 245 18 0.5 <1 <1 16 <1 1080 <1 27 <0.03 NA 1.17 <1 1540 <1 154 1.06 NA <1 92.4 56 130 <0.2 350 4.02 CMW-6 01/06/2016 6.8 3.90 12 520 0.8 71 276 5.8 NM <1 <1 12 <1 1640 <1 28 <0.03 NA <1 <1 559 <1 195 1.16 NA <1 94.6 60 150 <0.2 330 0.627 CMW-6 03/02/2016 6.8 3.75 13 576 7 6 96 301 3.4 0 <1 <1 15 <1 1500 <1 31 NA NA <5 <1 253 <1 111 <5 <0.5 <1 96.6 69 150 <0.2 370 4.48 CMW-6 06/O1/2016 6.8 3.90 18 563 0.29 -116 89 4.89 NM <1 <1 13 <1 1400 <1 31 NA NA <5 <1 307 <1 121 <5 <0.5 <1 105 67 150 <0.2 390 0.444 P:\Duke Energy Progress.1026\103. Cape Fear Ash Basin GW Assessment\19.EG_CSASUP\Tables\Table 4-3 Surficial GW Exceedances Incoporating Provisional Background.xlsx Page 3 of 6 TABLE 4-3 SURFICIAL GROUNDWATER EXCEEDANCES INCORPORATING PROVISIONAL BACKGROUND CAPE FEAR STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, MONCURE, NC Analytical Parameter pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Barium Beryllium Boron Cadmium Chloride Chromium (VI) Chromium (VI) Sp eciation Chromium Cobalt Iron Lead Manganese Nickel Nitrate Selenium Sodium Strontium Sulfate Thallium Total Dissolved Solids Vanadium Reporting Units S.U. ft Deg C umhos/cm mg/1 mV mV NTUs mg/I ug/l ug/I ug/l ug/l ug/I ug/l mg/l ug/I ug/l ug/I ug/I ug/I ug/l ug/l ug/l mg/1 ug/I mg/I ug/1 mg/l ug/1 mg/l ug/1 15A NCAC 02L Standard 6.5-8.5 NE NE NE NE NE NE NE NE 1* 10 700 4* 700 2 250 0.11 0.07^ 10 1* 300 15 50 100 30 20 NE NE 250 0.2* Soo 0.3* Provisional Background 6.1-6.4 NE NE NE NE NE NE NE NE NE 4.454 NE NE 378.1 NE 280 NE NE 1.22 117.6 45500 NE 4560 9.33 NE NE 104 758 118.1 NE 830 2.758 Sample ID Sample Collection Date Field Parameters Analytical Results CMW-7 12/17/2010 6.6 21.25 13 445 NM NM NM 1.63 NM 10.5 <5 55.8 NA 375 <0.08 34.7 NA NA <5 NA 8470 1 15 5480 15 <0.1 110 NA NA 103 <0.1 303 NA CMW-7 03/08/2011 6.6 21.21 15 527 0.86 -3 202 7.44 NM <0.5 <5 53.9 b NA 397 <0.08 35.5 b NA NA <5 NA 1840 <5 4850 <5 <0.1 <10 NA NA 96.2 <0.1 364 b NA CMW-7 06/02/2011 6.6 21.08 17 494 0.55 -75 131 7.01 NM <0.5 <5 40.7 NA 321 <0.08 32.8 NA NA <5 NA 9250 <5 5270 <5 <0A <10 NA NA 87.9 <0.1 282 NA CMW-7 10/11/2011 6.6 23.43 18 491 0.87 -70 135 4.48 NM <0.5 <5 45.8 NA 380 <0.08 35.3 NA NA <5 NA 9920 <5 5600 <5 <0.2 <10 NA NA 16.4 <0.1 285 NA CMW-7 DUP 10/11/2011 6.6 23.43 18 491 0.87 -70 135 4.48 NM <0.5 <5 43.9 NA 370 <0.08 35.8 NA NA <5 NA 9180 <5 5640 <5 <0.2 <10 NA NA 17.9 <0.1 279 NA CMW-7 03/13/2012 6.6 22.99 18 463 0.48 -68 137 8 NM <0.5 <5 44.4 NA 403 <0.08 37.1 NA NA <5 NA 8730 <5 4550 <5 0.23 <10 NA NA 73.4 <0.1 255 NA CMW-7 06/12/2012 6.7 22.54 18 566 1.03 -74 131 18.2 NM <0.5 <5 53 NA 361 <0.08 38.7 NA NA <5 NA 13200 <5 6030 <5 <0.02 <10 NA NA 99.2 <0.1 327 NA CMW-7 10/15/2012 6.7 22.92 18 581 0.5 -90 115 8.97 NM 10.5 <5 60.9 NA 412 <0.08 45.2 NA NA <5 NA 12500 <5 6300 <5 <0.02 <10 NA NA 117 <0.1 333 NA CMW-7 03/04/2013 6.6 22.18 14 569 0.27 -61 144 22.8 NM <1 1.69 55 NA 370 <1 39 NA NA <5 NA 12400 <1 5800 <5 0.035 <1 NA NA 88 <0.2 340 NA CMW-7 06/03/2013 6.5 22.64 19 578 0.73 -103 102 47.9 NM <1 1.88 57 NA 369 <1 45 NA NA <5 NA 16000 <1 6380 <5 <0.023 <1 NA NA 110 <0.2 330 NA CMW-7 10/09/2013 6.8 23.15 17 742 0.2 -63 142 17.5 NM <1 1.47 77 NA 404 <1 46 NA NA <5 NA 19200 <1 9040 <5 <0.023 <1 NA NA 170 <0.2 440 NA CMW-7 03/13/2014 5.1 21.43 10 72 1.4 309 514 14 NM <1 <1 58 NA <50 <1 4.9 NA NA <5 NA 817 <1 655 <5 0.03 <1 NA NA 10 <0.2 79 NA CMW-7 10/14/2014 6.4 23.76 19 630 0.22 -79 127 3.51 NM <1 1.24 66 NA 382 <1 44 NA NA <5 NA 18700 <1 8510 <5 0.31 <1 NA NA 130 <0.2 360 NA CMW-7 03/04/2015 5.1 21.62 17 67 0.16 139 344 29 NM <1 <1 59 NA <50 <1 3.2 NA NA <5 NA 2460 <1 770 <5 <0.023 <1 NA NA 10 <0.2 67 NA CMW-7 06/09/2015 5.6 23.54 19 282 0.38 -131 75 9.1 NM <1 1.1 162 <1 98 <1 22 NA NA <5 16.5 10300 <1 2210 <5 <0.1 <1 32.4 NA 72 <0.2 180 NA CMW-7 10/07/2015 5.9 22.86 19 661 0.42 -14 191 2.35 NM <1 <1 266 <1 305 <1 33 NA NA <5 33.3 18900 <1 5460 7 0.57 <1 67.5 280 180 <0.2 370 1.25 CMW-7 12/03/2015 5.3 20.90 14 55 0.3 -19 186 17.9 2 <1 <1 65 <1 <50 <1 2.9 <0.03 NA 1.04 4.48 2720 1.38 601 2.74 NA <1 3.84 41 3.1 <0.2 85 7.93 CMW-7 01/07/2016 5.5 19.87 12 68 0.6 20 225 8.1 2 <1 <1 61 <1 <50 <1 3.2 <0.03 NA <1 4.11 2790 <1 660 1.99 NA <1 4.59 43 6.4 <0.2 71 3.54 CMW-7 03/01/2016 5.3 20.20 17 84 0.37 61 266 6.6 2 <1 <1 67 <1 <50 <1 4.1 NA NA <5 5.97 2870 <1 853 <5 <0.5 <1 5.3 46 7.9 <0.2 52 1.59 CMW-7 06/01/2016 5.3 21.49 19 63 0.24 170 375 9.87 NM <1 <1 76 <1 <50 <1 2.8 NA NA <5 5.98 685 <1 1010 <5 <0.1 <1 4.39 47 7.5 <0.2 75 1.88 CMW-8 12/17/2010 6.5 7.71 14 532 NM NM NM 38 NM <0.5 <5 198 NA 1070 0.26 15.8 NA NA <5 NA 35200 <5 9770 <5 <0.1 <10 NA NA 129 <0.1 381 NA CMW-8 03/08/2011 6.5 7.05 15 702 0.7 -112 93 8.4 NM <0.5 <5 195 NA 1300 <0.08 14.6 b NA NA <5 NA 41300 <5 18000 <5 <0.1 <10 NA NA 109 <0.1 435 b NA CMW-8 06/02/2011 6.3 8.69 21 597 0.92 -76 129 11.6 NM <0.5 <5 165 NA 1210 <0.08 14.2 NA NA <5 NA 22700 <5 12600 <5 <0.1 <10 NA NA 128 <0.1 366 NA CMW-8 DUP 06/02/2011 6.3 8.69 21 597 0.92 -76 129 11.6 NM <0.5 <5 170 NA 1160 <0.08 14.5 NA NA <5 NA 23100 <5 13100 <5 <0.1 <10 NA NA 122 <0A 382 NA CMW-8 10/10/2011 6.2 9.12 20 593 1.1 -47 158 17.9 NM <0.5 <5 153 NA 1250 <0.08 14.8 NA NA <5 NA 27900 <5 9910 <5 <0.2 <10 NA NA 28 <0.1 365 NA CMW-8 03/13/2012 6.4 7.14 17 589 0.37 -113 92 23.9 NM <0.5 <5 203 NA 1320 <0.08 13.8 NA NA <5 NA 38600 <5 15300 <5 <0.2 <10 NA NA 102 <0.1 408 NA CMW-8 06/12/2012 6.3 8.99 19 674 1.36 -95 110 17.2 NM <0.5 <5 192 NA 1300 <0.08 14.6 NA NA <5 NA 42400 <5 12700 <5 <0.02 <10 NA NA 124 <0A 418 NA CMW-8 10/16/2012 6.4 9.37 19 662 0.6 -90 115 16.1 NM <0.5 <5 188 NA 1340 <0.08 14.6 NA NA <5 NA 39000 <5 9820 <5 <0.02 <10 NA NA 166 <0.1 401 NA CM W-8 03/05/2013 6.1 7.60 13 744 0.26 -99 106 23.2 NM <1 <1 227 NA 1240 <1 11 NA NA <5 NA 52700 <1 14400 6 <0.023 <1 NA NA 110 <0.2 440 NA CMW-8 06/04/2013 6.3 8.98 19 731 0.46 -79 126 7.8 NM <1 <1 225 NA 1350 <1 12 NA NA <5 NA 49900 <1 14400 <5 0.03 <1 NA NA 120 <0.2 470 NA CMW-8 10/08/2013 6.3 9.30 18 649 0.23 -52 153 9.85 NM <1 <1 151 NA 1210 <1 14 NA NA <5 NA 26100 <1 1 10100 <5 <0.023 <1 NA NA 130 <0.2 410 NA CMW-8 03/12/2014 6.4 6.24 14 728 0.5 -65 140 18 NM <1 <1 224 NA 1260 <1 13 NA NA <5 NA 50400 <1 15700 7 <0.023 <1 NA NA 130 <0.2 430 NA CMW-8 06/10/2014 6.3 8.82 18 674 0.4 -69 136 9 NM <1 <1 201 NA 1160 <1 13 NA NA <5 NA 41800 <1 12500 6 <0.023 <1 NA NA 130 <0.2 470 NA CMW-8 10/14/2014 6.0 9.17 20 604 0.21 -69 137 8.33 NM <1 <1 149 NA 1190 <1 14 NA NA <5 NA 27800 <1 9920 5 <0.023 <1 NA NA 130 <0.2 380 NA CMW-8 03/04/2015 6.4 6.68 15 724 0.16 -84 122 63.7 NM <1 <1 221 NA 1250 <1 14 NA NA <5 NA 49200 <1 13400 6 <0.023 <1 NA NA 130 <0.2 430 NA CMW-8 06/09/2015 6.3 8.92 23 694 0.29 1 -85 120 22 NM <1 <1 209 <1 1300 <1 14 NA NA <5 3.89 41800 <1 13000 <5 <0.2 <1 38.2 NA 47 <0.2 400 NA CMW-8 06/17/2015 6.3 9.13 20 7 0.25 -182 23 9.73 NM NA NA NA NA NA NA NA NA <0.005 NA NA NA NA NA NA NA NA NA NA NA NA NA NA CMW-8 10/07/2015 6.2 9.08 17 1284 1.4 -47 158 26.5 NM <1 <1 166 <1 1360 <1 14 NA NA <5 4.79 32700 <1 10900 <5 <0.1 <1 37.7 417 130 <0.2 440 0.389 CMW-8 12/02/2015 6.4 7.36 17 720 0.2 -79 126 8.4 7 <1 <1 224 <1 1400 <1 15 <0.03 NA <1 3.1 48900 <1 13800 3.09 NA <1 38 404 140 <0.2 470 0.3 CMW-8 01/06/2016 6.4 6.61 12 702 0.29 -77 128 9.29 NM <1 <1 229 <1 1400 <1 15 <0.03 NA <1 2.92 49000 <1 13700 2.85 NA <1 37.3 408 140 <0.2 420 0.374 CMW-8 03/02/2016 6.3 6.86 13 698 0.22 -75 130 15.7 NM <1 <1 192 <1 1320 <1 16 NA NA <5 5.48 32800 <1 12000 <5 <0.5 <1 38 423 140 <0.2 430 1.19 CMW-8 06/01/2016 6.6 8.44 19 759 0.34 86 291 7.46 NM <1 <1 285 <1 1430 <1 16 NA NA <5 1.69 65200 <1 16400 <5 <0.5 <1 39.4 422 140 <0.2 490 0.412 MW-10 09/06/2013 5.6 NM 18 872 0.24 19 NM 80.73 NM <0.34 0.64j 75.4 NA 978 <0.23 21.2 NA NA 2.6j NA 3230 0.73j 9680 5.5j NA <0.5 33.6 NA 590 <0.15 944 NA MW-10 06/17/2015 5.9 13.92 20 1379 0.66 -85 120 1 3.57 NM NA NA NA NA NA NA NA NA 0.007 NA NA NA NA NA NA NA NA NA NA NA NA NA NA MW-10 07/01/2015 5.8 13.36 18 1360 0.28 -114 91 3.01 2 <1 <1 29 <1 922 <1 23 NA NA <1 21 2800 <1 12500 3.55 NA <1 34.6 1460 610 <0.2 1100 0.366 MW-10 09/02/2015 5.8 13.95 20 1359 0.73 7 212 1.25 0.5 <1 <1 28 <1 987 <1 23 NA NA <1 20.5 740 <1 13100 3.47 NA <1 34.9 1480 1200 <0.2 1100 0.342 MW-10 12/02/2015 5.9 12.30 16 1412 0.47 69 274 4.47 1 <1 <1 30 <1 967 <1 24 <0.03 NA <1 21.9 4220 <1 13000 3.81 NA <1 35.9 1500 660 <0.2 1100 0.949 MW-10 01/07/2016 6.1 10.17 13 971 2.4 164 369 9.8 0 <1 <1 33 <1 752 <1 32 0.087 NA <1 4.42 687 <1 2630 2.01 NA 4.94 51 1040 SID <0.2 850 1.4 MW-11 09/03/2013 6.1 13.76 20 389 0.31 -3 NM 8.36 NM <0.34 0.91j 104 NA 21.3j <0.23 24.4 NA NA 1.9j NA 1760 0.13j 2410 6.6j NA <0.5 46 NA 215 <0.15 517 NA MW-11 DUP 09/03/2013 NM NM NM NM NM NM NM NM NM <0.34 0.98j 103 NA 21.5j <0.23 25.1 NA NA <1.6 NA 1780 0.13j 2300 5.8j NA <0.5 46.4 NA 229 <0.15 512 NA MW-11 07/01/2015 6.2 13.34 21 815 0.18 -148 57 4.65 2 <1 <1 59 <1 <50 <1 22 NA NA <1 1.03 3810 <1 912 4.23 NA <1 48.5 535 200 <0.2 550 0.867 MW-11 12/01/2015 6.3 12.04 17 865 0.11 -35 170 2.63 2 <1 1.64 66 <1 <50 <1 24 <0.03 NA <1 1.22 6810 <1 1180 3.89 NA <1 48.4 531 160 <0.2 520 1.17 MW-11 01/07/2016 6.7 10.00 16 823 0.2 -86 119 4.4 NM <1 1.23 64 <1 <50 <1 27 <0.03 NA <1 <1 5750 <1 1350 3.3 NA <1 49.8 531 170 <0.2 540 1.13 MW-12 09/04/2013 6.6 NM 21 546 0.12 -52 NM 34.64 NM 0.34j 1.7j 66.5 NA 568 <0.23 53.4 NA NA <1.6 NA 1570 0.21j 2690 <1.5 NA <0.5 130 NA 268 <0.15 671 NA MW-12 06/11/2015 6.8 12.58 23 1155 0.35 -139 66 3.75 NM NA NA NA NA NA NA NA NA <0.006 NA NA NA NA NA NA NA NA NA NA NA NA NA NA MW-12 06/30/2015 6.7 12.46 22 1187 0.24 -165 41 2.1 0.5 <1 <1 55 <1 448 <1 59 NA NA <1 2.43 456 <1 843 <1 NA <1 165 257 260 <0.2 740 <0.3 MW-12 12/01/2015 6.9 11.85 17 1259 0.3 -64 141 1 0.5 <1 <1 61 <1 284 <1 68 <0.03 NA <1 2.61 373 <1 977 <1 NA <1 186 274 250 <0.2 750 0.443 MW-12 01/05/2016 7.1 10.05 12 1070 0.67 52 257 0.9 0 <1 <1 52 <1 643 <1 57 <0.03 NA <1 1.59 84 <1 785 1.4 NA <1 157 237 250 <0.2 680 1.28 MW-12 03/01/2016 6.7 10.38 15 1286 0.56 156 361 8.6 0 <1 <1 58 <1 139 <1 73 <0.03 NA <1 1.68 348 <1 884 <1 NA <1 21.3 264 270 <0.2 800 1.43 MW-12 06/02/2016 6.8 12.05 18 1321 0.2 C 23 228 6.18 0 <1 <1 62 <1 54 <1 74 <0.03 NA <1 3.06 265 <1 787 <1 NA <1 220 277 260 <0.2 810 0.822 MW-13 09/03/2013 5.7 11.54 20 157 0.09 71 NM 4.13 NM <0.34 <0.42 86 NA 171 <0.23 31.6 NA NA <1.6 NA 154j <0.085 582 5.2j NA <0.5 29.6 NA 94 <0.15 234 NA MW-13 DUP 09/03/2212 NM NM NM NM NM NM NM NM NM <0.34 <0.42 84.3 NA 162 <0.23 31.6 NA NA <1.6 NA 141j <0.085 578 4.5j NA <0.1 28.8 NA 90.2 <0.15 244 NA MW-13 06/29/2015 5.8 11.64 18 432 0.33 136 341 2.88 0.5 <1 <1 102 <1 319 <1 28 NA NA <1 1.46 248 <1 820 3.31 NA <1 33.4 223 91 0.297 270 1.07 MW-13 12/O1/2015 5.3 6.07 16 168 0.99 240 445 7.53 0 <1 <1 61 <1 < <1 13 0.1 NA <1 <1 287 Q 205 2.77 NA <1 11.5 111 37 <0.2 120 1.22 P:\Duke Energy Progress.1026\103. Cape Fear Ash Basin GW Assessment\19.EG_CSASUP\Tables\Table 4-3 Surficial GW Exceedances Incoporating Provisional Background.xlsx Page 4 of 6 TABLE 4-3 SURFICIAL GROUNDWATER EXCEEDANCES INCORPORATING PROVISIONAL BACKGROUND CAPE FEAR STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, MONCURE, NC Analytical Parameter pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Barium Beryllium Boron Cadmium Chloride Chromium (VI) Chromium (VI) Sp eciation Chromium Cobalt Iron Lead Manganese Nickel Nitrate Selenium Sodium Strontium Sulfate Thallium Total Dissolved Solids Vanadium Reporting Units S.U. ft Deg C umhos/cm mg/1 mV mV NTUs mg/I ug/l ug/I ug/l ug/l ug/I ug/l mg/l ug/I ug/l ug/I ug/I ug/I ug/l ug/l ug/l mg/1 ug/I mg/I ug/1 mg/l ug/1 mg/l ug/1 15A NCAC 02L Standard 6.5-8.5 NE NE NE NE NE NE NE NE 1* 10 700 4* 700 2 250 0.11 0.07^ 10 1* 300 15 50 100 30 20 NE NE 250 0.2* Soo 0.3* Provisional Background 6.1-6.4 NE NE NE NE NE NE NE NE NE 4.454 NE NE 378.1 NE 280 NE NE 1.22 117.6 45500 NE 4560 9.33 NE NE 104 758 118.1 NE 830 2.758 Sample ID Sample Collection Date Field Parameters Analytical Results MW-13 01/07/2016 5.6 4.83 14 184 0.5 1 278 483 1.95 0 <1 <1 62 <1 <50 <1 18 0.075 NA <1 <1 68 <1 232 3.55 NA <1 13.9 117 44 <0.2 150 0.472 MW-17SL 03/19/2015 6.0 7.23 14 1189 0.29 -50 155 4.76 6.5 <1 <1 126 <1 <50 <1 17 NA NA <1 6.76 175000 <1 7380 1.58 NA <1 41.3 389 570 <0.2 900 0.919 MW-17SL 06/10/2015 5.7 9.49 20 738 0.29 -61 144 2.27 NM NA NA NA NA NA NA NA NA 0.1 NA NA NA NA NA NA NA NA NA NA NA NA NA NA MW-17SL 09/01/2015 5.8 10.41 18 762 0.2 -66 139 1 2.5 <1 <1 80 <1 <50 <1 12 NA NA <1 <1 68400 <1 5750 <1 NA <1 39.3 437 290 <0.2 580 0.667 MW-17SL 12/01/2015 5.6 7.05 14 365 0.15 -29 176 4.65 3 <1 <1 78 <1 <50 <1 13 <0.03 NA <1 <1 94200 <1 6860 <1 NA <1 25.5 447 350 <0.2 630 0.4 MW-17SL O1/05/2016 5.8 6.52 8 742 0.3 81 286 2.11 NM <1 <1 65 <1 <50 <1 14 <0.03 NA <1 <1 74600 <1 5950 <1 NA <1 28.9 566 280 <0.2 510 0.371 MW-17SU 03/19/2015 5.0 8.15 13 1129 0.33 63 268 4.46 2.5 <1 <1 42 1.3 <50 <1 38 NA NA <1 241 2620 <1 45500 59 NA <1 45.2 801 710 <0.2 910 0.381 MW-17SU 06/10/2015 5.7 10.32 21 755 0.5 -190 15 1.74 NM NA NA NA NA NA NA NA NA 0.058 NA NA NA NA NA NA NA NA NA NA NA NA NA NA MW-17SU 09/01/2015 5.1 10.99 21 1183 0.1 4 209 1 4 <1 1.06 40 1.37 <50 <1 37 NA NA <1 244 12400 <1 54400 53.5 NA <1 45.9 786 620 <0.2 960 2.79 MW-17SU 12/01/2015 5.3 7.67 15 1171 0.16 56 261 4.46 4 <1 <1 31 1.23 <50 <1 37 <0.03 NA <1 252 12500 <1 50300 56.4 NA <1 45.7 748 550 0.32 920 1.63 MW-17SU O1/05/2016 5.2 7.48 13 1142 0.2 64 269 9.65 NM <1 <1 28 <1 <50 <1 40 <0.03 NA <1 184 17200 <1 49400 42.7 NA <1 45.1 733 600 <0.2 980 1.34 MW-18S 06/03/2015 7.1 5.00 17 725 1.68 -10 195 2.99 NM <1 <1 10 <1 180 <1 29 NA NA <1 <1 288 <1 137 <1 NA <1 121 93 180 <0.2 450 1.63 MW-18S 09/01/2015 6.8 4.36 22 839 0.34 -24 181 6.13 0.5 <1 <1 13 <1 133 <1 37 NA NA <1 3.94 466 <1 1320 1.25 NA <1 140 90 190 <0.2 490 0.496 MW-18S 12/01/2015 7.0 3.03 14 850 2.5 19 224 1.72 NM <1 <1 13 <1 98 <1 46 <0.03 M1 NA <1 3.97 206 <1 1630 <1 NA <1 144 83 200 0.256 510 1.33 MW-18S 01/06/2016 6.9 2.79 12 813 1.79 1 15 220 0.2 NM <1 <1 10 <1 119 <1 49 <0.03 NA 1.19 3.22 211 <1 928 1.3 NA <1 144 88 210 <0.2 450 1.04 MW-19S 03/11/2015 5.3 4.50 15 66 7.05 164 369 19.6 0 <1 <1 47 <1 <50 <1 15 NA NA <1 <1 486 <1 27 <1 NA <1 7.09 37 2.6 <0.2 54 0.81 MW-19S 12/03/2015 5.0 4.62 14 62 5.1 201 406 1.2 NM <1 <1 35 <1 <50 <1 14 0.081 NA <1 <1 57 <1 24 <1 NA <1 6.63 30 2.4 0.332 <25 <0.3 MW-19S O1/06/2016 6.0 4.46 12 71 6.9 235 440 1.19 NM <1 <1 34 <1 <50 <1 13 0.088 NA <1 <1 62 <1 20 <1 NA <1 6.01 28 2.8 0.347 28 <0.3 MW-20S 05/21/2015 6.3 9.86 16 474 0.14 -24 181 4.98 NM <1 <1 163 <1 <50 <1 29 NA NA <1 <1 4270 <1 1210 <1 NA <1 38.4 1 263 52 <0.2 320 1.03 MW-20S 06/11/2015 6.4 11.57 18 478 0.58 -87 118 1.5 NM NA NA NA NA NA NA NA NA 0.018 NA NA NA NA NA NA NA NA NA NA NA NA NA NA MW-20S 09/01/2015 6.3 14.02 18 691 0.37 -130 75 1.95 1.5 <1 <1 163 <1 <50 <1 32 NA NA <1 <1 5270 <1 1250 <1 NA <1 37.4 282 56 <0.2 340 0.648 MW-20S 12/01/2015 6.2 9.63 15 535 0.3 -33 172 3.83 3.5 <1 <1 167 <1 <50 <1 34 <0.03 NA <1 <1 5140 <1 1270 <1 NA <1 34.4 304 69 <0.2 320 0.879 MW-20S O1/06/2016 6.3 6.28 14 462 0.28 86 291 9.39 NM <1 <1 154 <1 <50 <1 36 <0.03 NA <1 1.86 2230 <1 1170 1.77 NA <1 41.8 252 55 <0.2 270 0.334 MW-21SL 05/07/2015 5.7 10.03 17 1476 0.22 80 285 1.24 NM <1 <1 30 <1 60 <1 23 NA NA <1 18.7 731 <1 2430 7.9 NA <1 60.9 627 930 <0.2 1300 0.313 MW-21SL 06/10/2015 5.8 12.03 22 1194 0.42 -21 184 0.31 NM NA NA NA NA NA NA NA NA 0.052 NA NA NA NA NA NA NA NA NA NA NA NA NA NA MW-21SL 09/01/2015 5.8 13.58 24 1483 3.2 28 233 2 1.5 <1 <1 25 <1 135 <1 23 NA NA 7.12 8.98 1740 <1 2080 10.6 NA <1 58.6 617 810 <0.2 1300 0.532 MW-21SL 12/01/2015 5.8 9.62 15 1435 0.4 -48 157 1 0.5 <1 <1 19 <1 94 <1 23 <0.03 NA <1 7.26 612 <1 1820 8.37 NA <1 54.9 599 790 <0.2 1200 <0.3 MW-21SL 01/05/2016 5.9 9.62 11 1534 0.5 -92 113 1 1.2 1.5 <1 <1 18 <1 106 <1 25 <0.03 NA <1 10.9 1030 <1 2170 8.77 NA <1 49.2 653 870 <0.2 1300 <0.3 MW-21SU 05/07/2015 4.1 10.21 22 497 3.96 155 360 2.51 NM <1 4.15 27 8.94 <50 <1 5.5 NA NA <1 ISO 1 181 <1 9720 49A NA 1.98 9.27 526 300 0.335 360 <0.3 MW-21SU 06/10/2015 4.1 11.57 28 546 0.78 154 359 1.53 NM NA NA NA NA NA NA NA NA 0.19 NA NA NA NA NA NA NA NA NA NA NA NA NA NA MW-21SU 09/01/2015 4.1 12.99 24 526 3.1 427 632 2 0.25 <1 2.03 21 8.73 <50 <1 5.8 NA NA <1 167 238 <1 9960 45.4 NA 1.01 18.3 522 340 <0.2 400 <0.3 MW-21SU 12/01/2015 4.1 10.05 14 552 4 112 317 1 ND <1 2.75 23 10.5 <50 <1 6.2 <0.03 NA <1 170 55 <1 9790 49.1 NA I <1 18.4 1 547 370 1 <0.2 390 <0.3 MW-21SU 01/05/2016 4.3 10.05 12 508 3.1 401 606 1.83 0 <1 3.35 18 8.85 <50 <1 5.8 <0.03 NA <1 160 186 <1 9310 48 NA <1 16.9 546 290 <0.2 410 0.334 MW-22S 07/12/2016 6.8 8.61 22 745 1.98 1 14 219 8.45 4.5 <1 1.23 117 <1 238 <1 24 <0.03 NA <1 21.1 51100 <1 8130 <1 NA <1 32.9 486 310 <0.2 300 0.732 MW-23S 07/12/2016 8.3 8.23 20 593 1.12 121 326 6.35 0 <1 <1 56 <1 3000 <1 23 14.8 NA 19.5 5.44 46 <1 1080 2.8 NA 1.27 27.6 422 210 <0.2 87 6.42 PZ-1 03/07/2007 6.3 1.71 62 1280 NM NM NM NM NM <0.58 <2 38.6 <0.7 394 <0.5 18 NA NA <2 NA 1 14500 <2 9550 9.6 0.01 <2 97.9 NA 420 <0.044 890 NA PZ-1 12/19/2007 6.2 3.56 63 997 NM NM NM NM NM 0.55 1.1 33.6 0.062 381 0.066 21.2 NA NA 0.11 NA 23500 0.38 5350 7.1 <0.05 0.66 NA NA 448 0.12 815 NA PZ-1 04/30/2008 6.4 3.05 61 952 NM NM NM NM NM 0.83 0.96 66.1 0.34 473 0.12 23.9 NA NA 3.6 NA 46600 2.7 4300 6.4 <0.05 1.8 NA NA 434 <0.068 960 NA PZ-1 12/08/2008 6.3 3.01 60 619 NM NM NM NM NM 0.17 1.6 57.9 0.21 576 0.10 22 NA NA 3 NA 42400 2 4880 8.2 <0.05 3.2 NA NA 360 0.027 787 NA PZ-1 06/03/2009 5.3 3.76 65 779 NM NM NM NM NM 2.1 <1 39 <1 586 <1 25 NA NA 8.7 NA 30200 <1 3050 9.4 <0.05 <5 NA NA 390 <1 920 NA PZ-1 10/19/2009 6.0 3.80 65 905 NM NM NM NM NM 3.7 <1 31.7 <1 660 <1 20 NA NA <2 NA 27100 <1 4250 4.4 <0.05 <5 NA NA 320 <1 787 NA PZ-1 04/22/2010 6.3 3.45 60 799 NM NM NM NM NM <10 <10 42 <4 1 590 <2 21 NA NA <5 NA 28000 14 4100 <40 <0.02 <10 NA NA 350 <50 360 NA PZ-1 09/10/2013 6.2 4.25 21 708 0.1 -23 NM 17 NM <0.34 0.46j 31 NA 657 0.97 21.7 NA NA <1.6 NA 17200 0.098j 4270 5.4j NA <0.5 66.3 NA 290 <0.15 659 NA PZ-1 08/06/2015 6.1 4.88 22 881 0.15 -35 170 8.1 NM <1 <1 30 <1 650 <1 19 NA NA <1 4.35 14700 <1 4250 4.46 NA <1 68.1 273 260 <0.2 650 0.604 PZ-1 12/03/2015 6.3 1.38 13 793 0.8 -45 160 17.9 2 <1 <1 33 <1 628 <1 21 <0.03 NA <1 4.04 15600 <1 4300 4.79 NA <1 67.4 275 260 <0.2 620 0.881 PZ-1 01/07/2016 6.2 1.25 14 923 0.11 -27 178 13.74 0 <1 <1 34 <1 674 <1 21 <0.03 NA <1 3.81 16000 <1 4410 4.73 NA <1 61.8 279 260 <0.2 620 0.454 PZ-2 03/07/2007 7.4 4.85 1 60 940 NM NM NM NM NM <0.58 <2 34 <0.7 5240 <0.5 18 NA NA <2 NA 411 <2 4440 3.1 0.01 <2 111 NA 290 <0.044 600 NA PZ-2 12/19/2007 6.4 4.53 60 662 NM NM NM NM NM <0.3 0.77 27.9 <0.051 4620 0.081 20.2 NA NA <0.059 NA 555 0.048 3310 4.2 <0.05 0.7 NA NA 267 0.046 550 NA PZ-2 04/30/2008 7.7 4.76 58 629 NM NM NM NM NM <0.4 2.1 32 0.12 4380 0.07 25.3 NA NA 0.49 NA 10200 1.4 3180 4 <0.05 2.6 NA NA 289 <0.068 685 NA PZ-2 12/08/2008 6.7 4.53 60 508 NM NM NM NM NM <0.017 1.6 27.9 <0.051 4740 <0.028 22 NA NA 0.5 NA 954 0.082 2740 4.9 <0.05 4.9 NA NA 230 <0.011 534 NA PZ-2 06/03/2009 5.6 5.13 66 671 NM NM NM NM NM <2 <1 25.7 <1 4610 <1 24 NA NA <2 NA 1510 <1 2520 4 <0.05 <5 NA NA 240 <1 663 NA PZ-2 10/19/2009 6.3 4.90 65 605 NM NM NM NM NM <2 <1 25.7 <1 4560 <1 21 NA NA <2 NA 1330 <1 2460 4 <0.05 <5 NA NA 210 <1 528 NA PZ-2 04/22/2010 6.6 5.05 59 540 NM NM NM NM NM <10 <10 <25 <4 4300 <2 22 NA NA <5 NA 1100 <10 2400 <40 0.065 <10 NA NA 220 <50 53 NA PZ-2 09/04/2013 6.3 NM 19 472 0.36 1 -54 NM 897 NM <0.34 0.51j 26.3 NA 3810 <0.23 21.1 NA NA 1.6j NA 881 <0.085 2580 3.6j NA <0.5 68.6 NA 187 <0.15 1 426 NA PZ-2 08/06/2015 6.3 6.33 21 632 0.33 55 260 4.08 NM <1 <1 53 <1 3810 <1 19 NA NA <1 8.24 1140 <1 2440 8.58 NA <1 67.5 319 180 <0.2 430 1.66 PZ-2 DUP 08/06/2015 6.3 6.33 21 632 0.33 55 260 4.08 NM <1 <1 53 <1 3830 <1 19 NA NA <1 7.8 763 <1 2440 6.02 NA <1 67.1 322 180 <0.2 450 1.27 PZ-2 09/02/2015 6.4 6.27 23 662 0.5 51 256 4 0.25 <1 <1 53 <1 4320 <1 20 NA 0.03j <1 8.43 586 <1 2600 3.63 NA <1 72.6 340 200 <0.2 460 0.982 PZ-2 12/01/2015 6.3 4.39 16 526 0.53 179 384 6.16 0 <1 <1 50 <1 2090 <1 25 <0.03 NA <1 2.62 370 <1 1340 2.78 NA <1 50.1 326 120 <0.2 340 3.51 PZ-2 01/07/2016 6.5 4.60 12 449 0.9 122 327 2.3 0 <1 <1 45 <1 1890 <1 17 <0.03 NA <1 1.23 276 <1 544 1.83 NA <1 42.7 297 110 <0.2 290 3.12 PZ-3S 03/07/2007 7.9 2.68 55 799 NM NM NM NM NM <0.58 <2 27.7 <0.7 1350 <0.5 45 NA NA <2 NA 2630 <2 114 <2 <0.007 <2 158 NA 170 <0.044 510 NA PZ-3S 12/19/2007 7.7 3.15 60 676 NM NM NM NM NM <0.3 0.88 13.4 <0.051 1280 0.11 54.8 NA NA <0.059 NA 87.2 0.09 60.1 3.9 <0.05 0.84 NA NA 177 0.011 510 NA PZ-3S 04/30/2008 7.8 2.76 58 657 NM NM NM NM NM <0.4 0.82 11.7 <0.086 1160 0.026 55.2 NA NA 0.18 NA 70.2 0.074 95.2 0.59 <0.05 3.1 NA NA 183 <0.068 515 NA PZ-3S 12/08/2008 7.8 2.82 58 521 NM NM NM NM NM <0.017 1.8 13.7 <0.051 1420 <0.028 45 NA NA 0.48 NA 331 0.17 46 1.3 <0.05 5.8 NA NA 160 <0.011 502 NA P:\Duke Energy Progress.1026\103. Cape Fear Ash Basin GW Assessment\19.EG_CSASUP\Tables\Table 4-3 Surficial GW Exceedances Incoporating Provisional Background.xlsx Page 5 of 6 TABLE 4-3 SURFICIAL GROUNDWATER EXCEEDANCES INCORPORATING PROVISIONAL BACKGROUND CAPE FEAR STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, MONCURE, NC Analytical Parameter pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Barium Beryllium Boron Cadmium Chloride Chromium (VI) Chromium (VI) Sp eciation Chromium Cobalt Iron Lead Manganese Nickel Nitrate Selenium Sodium Strontium Sulfate Thallium Total Dissolved Solids Vanadium Reporting Units S.U. ft Deg C umhos/cm mg/1 mV mV NTUs mg/I ug/l ug/I ug/l ug/l ug/I ug/l mg/l ug/I ug/l ug/I ug/I ug/I ug/l ug/l ug/l mg/1 ug/I mg/I ug/1 mg/l ug/1 mg/l ug/1 15A NCAC 02L Standard 6.5-8.5 NE NE NE NE NE NE NE NE 1* 10 700 4* 700 2 250 0.07^ 0.07^ 10 1* 300 15 50 100 30 20 NE NE 250 0.2* Soo 0.3* Provisional Background 6.1-6.4 NE NE NE NE NE NE NE NE NE 4.454 NE NE 378.1 NE 280 NE NE 1.22 117.6 45500 NE 4560 9.33 NE NE 104 758 118.1 NE 830 2.758 Sample ID Sample Collection Date Field Parameters Analytical Results PZ-3S 06/03/2009 6.9 3.16 70 789 NM I NM NM NM NM 12 <1 10.9 <1 1360 <1 56 NA NA <2 NA <100 <1 49.5 <1 0.57 5 NA NA 180 <1 519 NA PZ-3S 10/19/2009 7.6 3.53 67 708 NM NM NM NM NM <2 <1 11.3 <1 1510 <1 52 NA NA <2 NA <100 <1 33.2 1.1 <0.25 <5 NA NA 170 <1 510 NA PZ-3S 04/22/2010 7.8 2.80 58 631 NM NM NM NM NM <10 <10 <25 <4 1400 <2 54 NA NA <5 NA 180 <10 56 <40 0.071 <10 NA NA 180 <50 32 NA PZ-3S 09/04/2013 7.6 NM 22 609 0.08 -56 NM 3 NM <0.34 <0.42 11.1 NA 2430 <0.23 53.2 NA NA <1.6 NA 107j <0.085 32.8 <1.5 NA <0.5 130 NA 182 <0.15 547 NA PZ-3S 08/05/2015 7.4 5.84 23 918 0.18 67 272 4.96 NM <1 <1 15 <1 2440 <1 67 NA NA <1 <1 255 <1 182 <1 NA <1 142 196 170 <0.2 590 1.97 PZ-3S 12/03/2015 7.3 4.38 16 928 1.42 159 364 9.28 NM <1 <1 15 <1 2500 <1 65 <0.03 NA <1 <1 294 <1 90 <1 NA <1 138 200 170 <0.2 570 3.54 PZ-3S 01/07/2016 7.4 3.94 14 1005 1.68 63 268 4.98 0 <1 <1 15 <1 2500 <1 72 <0.03 NA <1 <1 194 <1 91 <1 NA <1 151 216 180 <0.2 580 2.01 PZ-4 03/07/2007 7.2 7.81 58 1350 NM NM NM NM NM <0.58 <2 27.5 <0.7 70.8 <0.5 110 NA NA <2 NA 881 <2 117 <2 <0.007 3.1 212 NA 260 <0.044 840 NA PZ-4 12/19/2007 7.0 8.16 61 871 NM NM NM NM NM <0.3 0.76 19.1 <0.051 254 0.12 86.1 NA NA <0.059 NA 274 0.071 57.3 1 <0.05 0.93 NA NA 218 9.00E-03 643 NA PZ-4 04/30/2008 7.6 8.12 58 724 NM NM NM NM NM <0.4 0.85 19.3 <0.086 1090 0.051 72.6 NA NA 0.41 NA 677 0.22 33.5 1.1 <0.05 4.4 NA NA 207 <0.068 584 NA PZ-4 12/08/2008 6.9 8.14 58 548 NM NM NM NM NM <0.017 2.2 24.5 <0.051 1280 <0.028 68 NA NA 0.58 NA 695 0.27 46.3 2.3 <0.05 7.8 NA NA 180 <0.011 574 NA PZ-4 06/03/2009 5.8 8.51 63 788 NM NM NM NM NM <2 <1 31.9 <1 1530 1.4 68 NA NA 2.3 NA 1450 1.6 71.4 2.5 <0.05 5.8 NA NA 190 <1 670 NA PZ-4 10/19/2009 6.7 8.69 62 743 NM NM NM NM NM <2 <1 22.7 <1 1500 <1 70 NA NA 2.5 NA 566 <1 61.7 1.7 <0.05 I <5 NA NA 190 <1 598 NA PZ-4 04/22/2010 7.0 8.31 56 606 NM NM NM NM NM <10 <10 <25 <4 1800 <2 54 NA NA <5 NA 410 <10 75 <40 0.098 <10 NA NA 180 <50 56 NA PZ-4 09/06/2013 6.7 NM 19 544 0.16 1 -2 NM 1.86 NM <0.34 <0.42 21.1 NA 2080 <0.23 57 NA NA <1.6 NA 46.4j <0.085 111 <1.5 NA <0.5 91.4 NA 170 <0.15 475 NA PZ-4 08/05/2015 6.4 9.33 22 747 0.34 -85 120 4.96 NM <1 <1 36 <1 1440 <1 55 NA NA <1 1.31 1290 <1 519 9.7 NA <1 88.1 341 150 <0.2 470 0.979 PZ-4 12/03/2015 6.0 8.14 15 533 0.15 -59 146 3.34 3.5 <1 1.15 35 <1 718 <1 30 <0.03 NA <1 7.61 8160 <1 1580 3.97 NA <1 52.6 243 91 <0.2 320 2.24 PZ-4 01/07/2016 6.3 8.03 14 631 0.18 -3 202 3.99 0 <1 <1 42 <1 1030 <1 41 <0.03 NA <1 5 3890 <1 1350 4.2 NA <1 58.3 290 120 <0.2 380 1.08 PZ-5 03/07/2007 6.2 0.72 56 769 NM NM NM NM NM <0.58 <2 777 0.9 3500 <0.5 24 NA NA 101 NA 114000 53.3 5140 84.8 <0.007 <2 74.3 NA 280 0.478 570 NA PZ-5 12/19/2007 5.8 0.50 59 612 NM NM NM NM NM <0.3 0.81 27.1 <0.051 3660 0.23 25.1 NA NA <0.059 NA 144 0.076 1640 8.7 <0.05 1.1 NA NA 288 0.014 514 NA PZ-5 04/30/2008 6.9 0.32 60 628 NM NM NM NM NM <0.4 0.81 26.1 <0.086 3600 0.057 28.3 NA NA 0.16 NA 100 0.079 1920 8.9 <0.05 3.7 NA NA 318 <0.068 743 NA PZ-5 12/08/2008 6.1 0.21 56 479 NM NM NM NM NM <0.017 2 28.8 0.06 4340 0.082 26 NA NA 0.61 NA 354 0.26 2140 10.4 <0.05 7.1 NA NA 300 <0.011 550 NA PZ-5 06/03/2009 5.3 0.20 68 721 NM NM NM NM NM <2 <1 24.2 <1 4540 <1 29 NA NA <2 NA <100 <1 2160 7.3 <0.05 5.9 NA NA 340 <1 757 NA PZ-5 10/19/2009 6.0 0.40 67 663 NM NM NM NM NM <2 <1 25.8 <1 4860 <1 24 NA NA 2.3 NA <100 <1 2280 7.8 <0.05 <5 NA NA 290 <1 615 NA PZ-5 04/22/2010 6.1 0.50 59 564 NM NM NM NM NM <10 <10 <25 <4 4100 <2 25 NA NA <5 NA <100 <10 2600 <40 0.061 <10 NA NA 290 <50 32 NA PZ-5 09/10/2013 5.8 1.24 23 511 0.03 70 NM 6.4 NM <0.34 <0.42 23.6 NA 4860 0.23j 33 NA NA <1.6 NA 227 0.12j 2390 7.4j NA <0.5 54.7 NA 269 <0.15 493 NA PZ-5 08/05/2015 5.4 2.13 24 692 0.68 214 419 4.1 NM <1 <1 26 <1 4910 <1 28 NA NA <1 8.24 200 <1 2990 6.53 NA <1 58.6 358 270 <0.2 510 0.535 PZ-5 03/02/2016 5.8 1.53 13 686 1.91 1 103 308 1 9.2 1 <1 <1 23 <1 4520 <1 25 <0.03 NA <1 14.3 1400 <1 2930 9.34 NA <1 46.1 354 270 <0.2 490 0.81 PZ-5 06/02/2016 5.8 1.83 20 645 0.27 C 95 NM 3.42 0 <1 <1 22 <1 4860 <1 25 <0.03 NA <1 6.33 316 <1 2750 5.74 NA <1 47.2 344 250 <0.2 460 0.891 PZ-9 09/05/2013 2.1 8.22 18 NM 0.33 1 128 NM 4.52 NM <0.34 0.65j 160 NA <8.4 <0.23 32.5 NA NA <1.6 NA 920 1.4 257 21.9 NA <0.5 12.2 NA 5.4 <0.15 87 NA PZ-9 08/06/2015 4.6 12.10 19 358 0.2 370 575 13 NM <1 <1 44 <1 103 <1 29 NA NA 1.91 28.4 1170 <1 627 41.9 NA 96.1 30.1 671 110 0.574 240 0.811 Prepared By: BER Checked By: MCD Notes: - Concentration exceeds the 15A NCAC 02L Standard, Appendix 2, April 1, 2013, or the provisional background concentration (whichever is greater). mg/1 = Milligram per liter ug/I = Microgram per liter ORP = Oxidation -Reduction Potential DUP = Duplicate NA = Not analyzed Deg C = Degrees Celsius S.U. = Standard Unit NC = Not calculated Eh = Redox Potential NM = Not measured mg - N/L = Milligram nitrogen per liter TV = Millivolts Spec Cond = Specific Conductance ft = Feet Temp = Temperature NE = Not established umhos/cm = Micro mhos per centimeter NTU = Nephelometric turbidity unit DO = Dissolved oxygen NC DHHS Health Screening Level < = Concentration not detected at or above the reporting limit = Interim Maximum Allowable Concentrations (IMACs) of the 15A NCAC 02L Standard, Appendix 1, April 1, 2013. 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. Ml = 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 = Sample inadvertently collected with sample running through the flow cell and should be considered invalid based on possible contamination from the flow cell. Data not used in provisional background concentration determinations. P:\Duke Energy Progress.1026\103. Cape Fear Ash Basin GW Assessment\19.EG_CSASUP\Tables\Table 4-3 Surficial GW Exceedances Incoporating Provisional Background.xlsx Page 6 of 6 TABLE 4-4 BEDROCK GROUNDWATER EXCEEDANCES INCORPORATING PROVISIONAL BACKGROUND CAPE FEAR STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, MONCURE, NC Analytical Parameter pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Barium Boron Chromium (VI) Chromium (VI) Speciation Chromium Cobalt Iron Manganese Sodium Strontium Sulfate Thallium Total Dissolved Solids Vanadium Reporting Units S.U. ft Deg C umhos/cm mg/I mV mV NTUs mg/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I mg/l ug/I mg/I ug/I mg/I ug/I 15A NCAC 02L Standard 6.5-8.5 NE NE NE NE NE NE NE NE 1* 10 700 700 0.07^ 0.07^ 10 1* 300 50 NE NE 250 0.2* 500 0.3* Provisional Background 5.6-8.2 NE NE NE NE NE NE NE NE NE NE 467.1 57.79 0.052 0.052+ NE 8.384 6257 897.4 112.3 987.8 167.4 0.489 946 3.843 Sample ID Sample Collection Date Field Parameters Analytical Results Background BGTMW-4 0910312013 NM 17.24 NM NM NM NM NM NM NM NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA BGTMW-4 0910412013 7.4 NM 18 160 0.72 49 NM 0.79 NM <0.34 2.9 118 21.2 j NA NA <1.6 NA <43 51.9 21.2 NA 9.4 <0.15 185 NA BGTMW-4 1211512010 10.3 18.38 13 149 NM NM NM 6.2 NM 1.1 6.7 20.6 <50 NA NA <5 NA 148 <5 NA NA 17.2 <0.1 107 NA BGTMW-4 0310712011 9.4 17.87 15 217 1.2 -55 150 4.01 NM 0.65 <5 49.5 b <50 NA NA <5 NA 176 10.8 NA NA 18.1 b <0.1 156 b NA BGTMW-4 0610112011 9.1 17.30 22 235 1.18 -94 111 9.82 NM 0.6 8.2 65.6 <50 NA NA <5 NA 223 b 27.1 NA NA 22.8 <0.1 178 NA BGTMW-4 1011012011 8.0 18.45 20 271 0.55 -11 194 3 NM <0.5 <5 106 <50 NA NA <5 NA 93.3 95.7 NA NA 11.8 <0.1 149 NA BGTMW-4 0311212012 7.8 17.35 17 275 0.93 -51 154 6.77 NM <0.5 <5 109 <50 NA NA <5 NA 406 b 130 NA NA 10.6 <0.1 168 NA BGTMW-4 0611112012 7.5 17.73 19 289 2.23 -43 162 5.86 NM <0.5 <5 108 <50 NA NA <5 NA 213 99.5 NA NA 11 <0.1 159 NA BGTMW-4 1011512012 8.0 18.95 18 289 0.67 58 263 3.89 NM <0.5 <5 122 <50 NA NA <5 NA 234 161 NA NA 11.3 <0.1 156 NA BGTMW-4 0310512013 7.8 17.97 13 301 0.39 19 224 9.05 NM <1 1.34 112 <50 NA NA <5 NA 188 136 NA NA 7.3 <0.2 180 NA BGTMW-4 0610312013 8.0 17.25 21 299 2.67 155 360 4.85 NM <1 2.56 117 <50 NA NA <5 NA 200 72 NA NA 9.9 <0.2 180 NA BGTMW-4 1010812013 7.9 17.88 17 309 0.54 204 409 3.99 NM <1 2.16 121 <50 NA NA <5 NA 148 91 NA NA 7.8 <0.2 190 NA BGTMW-4 0311112014 8.0 14.04 17 305 3.4 146 351 0.6 NM <1 1.17 121 <50 NA NA <5 NA 90 142 NA NA 8 <0.2 190 NA BGTMW-4 0610912014 8.0 16.20 21 301 2.7 138 343 3.1 NM <1 3.33 119 <50 NA NA <5 NA 53 43 NA NA 9.1 <0.2 190 NA BGTMW-4 1011312014 7.4 17.73 18 305 0.26 209 414 0.56 NM <1 2.45 126 <50 NA NA <5 NA 61 110 NA NA 6.1 <0.2 190 NA BGTMW-4 0310412015 7.7 15.12 14 321 0.8 48 253 0.46 NM <1 <1 128 <50 NA NA <5 NA 111 172 NA NA 5.7 <0.2 I80 NA BGTMW-4 0610812015 8.1 16.63 20 310 2.3 -43 162 2.54 NM <1 3.05 129 <50 NA NA <5 <1 57 59 22.1 NA 8.1 <0.2 180 NA BGTMW-4 1010712015 7.7 17.34 18 318 0.2 -60 145 1.98 NM <1 1.96 138 <50 NA NA <5 <1 119 132 20.7 301 5.8 <0.2 180 <0.3 BGTMW-4 1210212015 7.5 15.58 16 320 0.17 -101 105 0.34 NM <1 1.08 121 <50 <0.03 NA <1 <1 123 168 20.2 286 5.8 <0.2 200 0.381 BGTMW-4 0110612016 7.8 14.08 13 301 0.48 -128 77 1.53 0 <1 <1 126 <50 <0.03 NA <1 <1 171 191 20.3 292 5.5 <0.2 170 <0.3 BGTMW-4 0310212016 7.7 14.58 16 314 0.5 138 343 5.5 0 <1 1.27 126 <50 <0.03 NA <5 <1 122 146 20.4 286 6.4 <0.2 180 <0.3 BGTMW-4 0610212016 8.1 15.97 20 311 2.78 69 274 1.86 NM <1 2.87 127 <50 0.18 NA <5 <1 83 55 21.7 289 7.8 <0.2 1 190 0.426 MW-9 0910312013 NM 13.09 NM NM NM NM NM NM NM NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA MW-9 0910912013 6.2 NM 20 549 0.35 50 NM 14.9 NM <0.34 0.7 j 74.7 13.5 j NA NA <1.6 NA 1060 678 55.7 NA 22 <0.15 393 NA MW-9 06/17/2015 5.9 14.26 18 991 0.7 -12 193 2.91 NM NA NA NA NA NA 0.014 NA NA NA NA NA NA NA NA NA NA MW-9 06/30/2015 5.7 14.20 21 1049 0.23 101 306 3.21 1.5 <1 <1 76 <50 NA NA <1 6.7 1800 826 61.4 538 41 <0.2 660 <0.3 MW-9 09/01/2015 6.1 15.48 22 863 0.2 49 254 1.9 2 <1 <1 103 <50 NA NA <1 1.51 2290 814 45.8 490 21 <0.2 560 0.41 MW-9 12/02/2015 5.7 13.64 17 1061 1 0.5 57 262 1.1 1.5 1 <1 <1 83 <50 <0.03 NA <1 2.68 1 4230 789 57.7 534 40 <0.2 530 <0.3 MW-9 01/07/2016 5.8 11.94 12 1069 2.4 200 405 0.4 0.5 <1 <1 66 <50 0.052 NA <1 1.02 406 360 70.2 480 51 <0.2 1 560 <0.3 MW-9 03/01/2016 5.6 10.45 16 1028 1.48 213 418 3.7 0 <1 <1 46 <50 <0.03 NA <1 <1 201 115 77.7 477 53 <0.2 590 <0.3 MW-9 06/02/2016 5.6 12.14 16 1016 1.15 C 156 361 1.51 0 <1 <1 45 <50 <0.03 NA <1 <1 184 230 75.7 463 42 <0.2 650 0.438 MW-9BR 05/30/2015 7.7 17.46 19 706 0.12 -238 -33 2.1 NM <1 <1 420 <50 NA NA <1 <1 441 829 37.2 677 7.9 <0.2 410 <0.3 VW-9BR 06/17/2015 7.4 18.43 20 714 0.32 -262 -57 1.59 NM NA NA NA NA NA <0.005 NA NA NA NA NA NA NA NA NA NA MW-9BR 09/01/2015 7.3 19.23 21 656 0.2 -128 78 1 0.5 <1 <1 410 <50 NA NA <1 <1 491 905 36.3 642 4.9 <0.2 410 <0.3 VW-9BR 12/02/2015 7.3 15.97 15 639 0.4 -128 77 2.3 1 <1 <1 399 <50 <0.03 NA <1 <1 412 793 37.6 600 1.8 0.489 380 0.372 MW-9BR 01/07/2016 7.6 15.15 11 650 0.7 -116 89 0.7 0.5 <1 <1 414 <50 <0.03 NA <1 <1 427 778 37.2 593 1.6 <0.2 360 <0.3 MW-9BR 03/01/2016 7.4 14.93 19 637 0.38 -155 50 2 0 <1 <1 420 <50 <0.03 NA <1 <1 379 770 36.1 596 2.3 <0.2 360 <0.3 MW-9BR 06/02/2016 7.4 16.05 19 617 1.51 C 77 282 0.63 0 <1 <1 405 <50 <0.03 NA <1 <1 127 724 36.2 601 4 <0.2 360 0.31 MW-15BR 06/01/2015 8.2 10.87 21 410 1.52 -71 134 4.75 NM <1 6.76 429 <50 NA NA <1 <1 <10 72 36.7 501 NA <0.2 NA 1.73 MW-15BR 06/30/2015 7.9 9.62 18 431 0.52 137 342 2.32 0 <1 6.07 398 <50 NA NA <1 <1 31 69 42.9 493 37 <0.2 260 1.82 MW-15BR 09/01/2015 8.1 10.71 23 425 0.65 -141 64 6.46 NM <1 7.84 342 <50 NA NA <1 <1 123 62 52.1 435 54 <0.2 270 1.98 MW-15BR 12/02/2015 8.0 7.95 16 421 0.44 114 319 2.09 0 <1 8.25 335 <50 <0.03 NA <1 <1 45 46 47.8 441 50 <0.2 260 2.32 MW-15BR DUP 1210212015 8.0 7.95 16 421 0.44 114 319 2.09 0 <1 6.67 330 <50 <0.03 MI NA <1 <1 21 53 52.8 443 53 0.399 280 2.26 MW-15BR 01/06/2016 8.2 5.78 10 401 0.45 37 242 1.95 0 <1 6.35 325 <50 <0.03 NA <1 <1 31 58 50.2 438 54 1 <0.2 1 240 2.83 MW-15BR 03/02/2016 7.8 6.61 14 422 0.31 -121 84 4.3 NM <1 5.97 299 <50 <0.03 NA <1 <1 26 53 53 409 56 <0.2 260 2.75 MW-15BR 06/02/2016 8.0 7.95 19 403 1.98 C -59 146 4.93 0 <1 6.4 323 <50 0.055 NA <1 <1 49 9 4LL_L 429 47 <0.2 240 2.37 P:\Duke Energy Progress.1026\103. Cape Fear Ash Basin GW Assessment\19.EG_CSASUP\Tables\Table 4-4 Bedrock GW Exceedances Incorporating Provisional Background.xlsx Page 1 of 5 TABLE 4-4 BEDROCK GROUNDWATER EXCEEDANCES INCORPORATING PROVISIONAL BACKGROUND CAPE FEAR STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, MONCURE, NC Analytical Parameter pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Barium Boron Chromium (VI) Chromium (VI) Speciation Chromium Cobalt Iron Manganese Sodium Strontium Sulfate Thallium Total Dissolved Solids Vanadium Reporting Units S.U. ft Deg C umhos/cm mg/I mV mV NTUs mg/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I mg/l ug/I mg/I ug/I mg/I ug/I 15A NCAC 02LStandard 6.5-8.5 NE NE NE NE NE NE NE NE 1* 10 700 700 0.07^ 0.07^ 10 1* 300 50 NE NE 250 0.2* 500 0.3* Provisional Background 5.6-8.2 NE NE NE NE NE NE NE NE NE NE 467.1 57.79 0.052 0.052+ NE 8.384 6257 897.4 112.3 987.8 167.4 0.489 946 3.843 Sample ID Sample Collection Date Field Parameters Analytical Results MW-16BR 05/20/2015 7.7 53.91 16 589 0.17 -149 56 4.83 NM <1 2.5 360 51 NA NA <1 <1 329 326 57.3 505 41 <0.2 340 <0.3 MW-16BR 06/11/2015 7.7 4.80 17 581 0.12 -260 -55 3.93 NM NA NA NA NA NA 0.019 NA NA NA NA NA NA NA NA NA NA M W-16BR 09/01/2015 7.7 6.82 18 673 0.1 -115 90 1 0.25 <1 1.44 468 52 NA NA 4.98 <1 311 248 70.7 713 93 <0.2 410 <0.3 M W-16BR 12/02/2015 7.6 2.50 16 720 0.4 -102 103 4 0.25 <1 1.56 459 53 <0.03 NA <1 <1 401 246 72.5 771 120 <0.2 440 <0.3 M W-16BR 01/07/2016 7.7 1.93 13 700 0.3 -129 76 1 0 <1 <1 437 <50 <0.03 NA <1 <1 303 260 66.6 730 110 <0.2 440 <0.3 MW-16BR 03/02/2016 7.6 1.99 15 695 1 0.2 1 -178 27 4.5 NM <1 1.06 419 <50 <0.03 NA <1 <1 350 1 252 68.7 703 100 <0.2 430 <0.3 MW-16BR 06/02/2016 7.6 2.63 16 659 0.23 C 1 63 268 1 1.95 0 <1 <1 412 <50 <0.03 NA <1 <1 296 254 64.7 700 86 <0.2 390 0.304 Bedrock ABMW-1BR 05/08/2015 8.1 28.07 28 639 0.37 -138 67 4 NM <1 5.64 124 891 NA NA <1 <1 173 629 49.4 542 140 <0.2 400 0.867 ABMW-1BR 06/15/2015 11.0 29.55 33 937 0.83 -218 -13 3.93 NM NA NA NA NA NA 10.5 NA NA NA NA NA NA NA NA NA NA ABMW-1BR 08/31/2015 8.6 30.12 23 648 0.58 -172 33 5.84 NM <1 7.69 166 1350 NA NA 8.39 <1 264 802 52.9 779 140 <0.2 440 0.703 ABMW-lBR 12/01/2015 11.0 27.90 14 808 0.4 -152 53 5.2 ND <1 7.08 193 1160 0.04 NA 13.5 <1 111 345 91.6 1200 140 <0.2 410 1.05 ABMW-1BR 01/05/2016 10.2 27.30 15 686 0.63 -196 9 0.97 0 <1 7.62 149 1080 0.091 NA 3.5 <1 65 357 77.7 961 140 <0.2 420 0.802 ABMW-1BR 03/03/2016 8.2 27.21 15 631 0.45 C -36 169 8.2 0 <1 8.39 185 1250 0.048 NA <1 <1 240 428 42.2 899 150 <0.2 420 0.389 ABMW-3BR 05/19/2015 7.1 22.84 19 863 0.13 -72 133 8.44 NM <1 1.28 129 188 NA NA <1 <1 1660 1690 62.3 573 140 <0.2 540 <0.3 ABMW-3BR 06/16/2015 7.0 23.46 20 859 0.3 -205 0 2.83 NM NA NA NA NA NA <0.005 NA NA NA NA NA NA NA NA NA NA ABMW-3BR 09/01/2015 6.9 24.18 19 860 0.42 -101 105 6.78 1 <1 1.46 116 140 NA NA <1 <1 1630 1540 65.3 614 130 0.229 540 <0.3 ABMW-3BR 12/01/2015 6.9 22.47 15 871 0.23 -102 103 1.25 1.5 <1 1.83 118 158 <0.03 NA <1 <1 1510 1590 62.2 623 140 <0.2 520 <0.3 ABMW-3BR 01/06/2016 7.1 20.83 12 749 0.3 -84 121 8.3 1.5 <1 1.41 124 220 <0.03 NA <1 <1 2050 1820 59.8 590 170 <0.2 530 <0.3 ABMW-5BR 05/19/2015 8.2 24.58 21 329 0.14 -264 -59 4.68 NM <1 2.58 310 54 NA NA <1 <1 129 63 38.4 358 15 0.359 200 <0.3 ABMW-5BR 06/11/2015 8.1 25.10 25 324 0.34 -211 -6 4.21 NM NA NA NA NA NA 0.012 NA NA NA NA NA NA NA NA NA NA ABMW-5BR 09/01/2015 8.0 26.11 24 854 0.44 -158 47 2.19 0 <1 1.66 278 60 NA NA <1 <1 74 67 44.6 321 9.6 <0.2 200 0.333 ABMW-5BR 12/03/2015 8.0 24.51 10 322 0.6 -120 85 5.87 0.5 <1 1.25 305 58 <0.03 NA <1 <1 124 43 45 305 6.8 <0.2 170 <0.3 ABMW-5BR 01/07/2016 7.9 22.65 16 312 0.35 139 344 1.15 0 <1 <1 318 60 <0.03 NA <1 <1 76 42 43.9 294 3.8 <0.2 170 <0.3 CTMW-1 12/17/2010 7.0 7.51 15 516 NM NM NM 5.71 NM <0.5 <5 161 309 NA NA <5 NA 723 1220 NA NA 97.7 <0.1 1 412 NA CTM W-1 03/08/2011 7.1 6.62 15 678 0.45 -92 113 1.33 NM <0.5 <5 181 367 NA NA <5 NA 822 1220 NA NA 96.4 <0.1 491 NA CTMW-1 06/02/2011 7.1 7.28 19 618 3.45 -102 103 8.5 NM <0.5 <5 144 256 NA NA <5 NA 416 b 303 NA NA 89.1 <0.1 412 NA CTMW-1 10/11/2011 6.9 7.74 18 632 NM NM NM 7.4 NM <0.5 <5 187 348 NA NA <5 NA 886 1250 NA NA 17.8 <0.1 431 NA CTMW-1 03/12/2012 6.9 7.35 17 593 0.6 -66 139 9.44 NM <0.5 <5 134 295 NA NA <5 NA 1480 b 1160 NA NA 121 <0.1 436 NA CTMW-1 06/12/2012 6.9 7.48 20 670 1.4 -49 156 3.88 NM <0.5 <5 157 363 NA NA <5 NA 1210 1460 NA NA 89 <0.1 445 NA CTMW-1 10/15/2012 7.1 7.82 20 656 0.72 -70 135 3.11 NM <0.5 <5 153 364 NA NA <5 NA 951 1260 NA NA 79.7 <0.1 429 NA CTMW-1 03/04/2013 7.0 6.72 15 680 0.4 -46 159 3.12 NM <1 <1 144 347 NA NA <5 NA 887 1460 NA NA 97 1 <0.2 450 NA CTMW-1 DUP 03/04/2013 7.0 6.72 15 680 0.4 -46 159 3.12 NM <1 <1 143 343 NA NA <5 NA 905 1460 NA NA 97 <0.2 450 NA CTMW-1 06/03/2013 7.0 7.52 19 685 1.72 -69 136 2.44 NM <1 <1 152 364 NA NA <5 NA 899 1260 NA NA 110 <0.2 460 NA CTMW-1 10/09/2013 7.2 7.48 18 691 2.44 -14 191 6.58 NM <1 <1 167 347 NA NA <5 NA 823 1250 NA NA 100 <0.2 460 NA CTMW-1 03/12/2014 7.0 4.44 1 15 706 0.6 22 227 1.2 NM <1 <1 176 379 NA NA <5 NA 798 1440 NA NA 110 <0.2 460 NA CTMW-1 06/09/2014 7.1 7.21 20 686 1.9 37 242 4.1 NM <1 <1 158 349 NA NA <5 NA 540 979 NA NA 100 <0.2 460 NA CTMW-1 10/14/2014 6.8 7.56 21 660 0.29 -36 169 7.81 NM <1 <1 202 350 NA NA <5 NA 1160 1440 NA NA 100 <0.2 450 NA CTMW-1 03/04/2015 7.1 5.20 18 707 0.37 -54 151 5.48 NM <1 <1 185 379 NA NA <5 NA 874 1430 NA NA 100 <0.2 460 NA CTMW-1 06/09/2015 7.1 7.10 21 700 0.7 -140 65 2.8 NM <1 <1 178 379 NA NA <5 <1 385 546 23.8 NA 100 <0.2 460 NA CTMW-1 06/16/2015 7.0 7.20 22 659 0.9 -54 151 2.48 NM NA NA NA NA NA <0.005 NA NA NA NA NA NA NA NA NA NA CTMW-1 10/07/2015 6.8 6.28 19 704 0.47 -52 154 5.52 NM <1 <1 202 361 NA NA <5 <1 698 1490 23.1 590 100 <0.2 460 <0.3 CTMW-1 12/02/2015 7.1 6.14 18 692 0.5 -84 121 3.1 1.5 <1 <1 219 378 <0.03 NA <1 <1 1320 1300 23.7 613 110 <0.2 470 <0.3 CTMW-1 03/01/2016 6.9 5.67 17 707 0.32 -52 153 2.6 2 <1 <1 147 428 NA NA <5 <1 1320 1670 23.8 576 120 <0.2 470 <0.3 CTMW-1 DUP 03/01/2016 6.9 5.67 17 707 0.32 -52 153 2.6 2 <1 <1 146 423 NA NA 1 <5 <1 1430 1 1680 23.6 572 130 1 <0.2 460 <0.3 CTMW-1 06/01/2016 7.0 6.98 20 678 1.08 -67 138 8.62 NM <1 <1 137 388 NA NA <5 <1 1610 1340 23.4 567 130 0.495 490 0.311 CTMW-2 03/08/2011 8.4 11.36 14 274 0.84 -164 41 8.67 NM <0.5 <5 144 54.2 NA NA <5 NA 194 51.9 NA NA 5.7 b <0.1 213 b NA P:\Duke Energy Progress.1026\103. Cape Fear Ash Basin GW Assessment\19.EG_CSASUP\Tables\Table 4-4 Bedrock GW Exceedances Incorporating Provisional Background.xlsx Page 2 of 5 TABLE 4-4 BEDROCK GROUNDWATER EXCEEDANCES INCORPORATING PROVISIONAL BACKGROUND CAPE FEAR STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, MONCURE, NC Analytical Parameter pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Barium Boron Chromium (VI) Chromium (VI) Speciation Chromium Cobalt Iron Manganese Sodium Strontium Sulfate Thallium Total Dissolved Solids Vanadium Reporting Units S.U. ft Deg C umhos/cm mg/I mV mV NTUs mg/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I mg/l ug/I mg/I ug/I mg/I ug/I 15A NCAC 02LStandard 6.5-8.5 NE NE NE NE NE NE NE NE 1* 10 700 700 0.07^ 0.07^ 10 1* 300 50 NE NE 250 0.2* 500 0.3* Provisional Background 5.6-8.2 NE NE NE NE NE NE NE NE NE NE 467.1 57.79 0.052 0.052+ NE 8.384 6257 897.4 112.3 987.8 167.4 0.489 946 3.843 Sample ID Sample Collection Date Field Parameters Analytical Results CTMW-2 06/09/2011 7.8 11.35 19 285 1.02 -89 117 110 NM <0.5 <5 249 <50 NA NA <5 NA 1 1340 34.9 NA NA <5 <0.1 182 NA CTMW-2 10/11/2011 8.1 11.67 17 280 0.73 -220 -15 16.3 NM <0.5 <5 206 <50 NA NA <5 NA 402 46.1 NA NA <5 <0.1 175 NA CTMW-2 10/07/2015 7.6 9.99 17 304 0.57 -7 198 5.95 NM <1 9.38 249 <50 NA NA <5 <1 21 <5 43.1 307 6.3 <0.2 180 2.1 CTMW-2 12/02/2015 8.0 10.14 17 303 0.8 67 272 6.6 0 <1 7.38 246 <50 <0.03 NA <1 <1 91 9 44.2 302 6 <0.2 190 1.78 CTMW-2 01/07/2016 8.2 8.40 14 290 0.4 34 239 37.3 NM <1 4.05 242 <50 <0.03 NA <1 <1 207 10 45.3 290 4.4 <0.2 180 0.915 CTMW-2 03/01/2016 7.8 8.88 17 302 2.6 8 213 1.1 0 <1 8.23 254 <50 NA NA <5 <1 <10 <5 45.4 309 5.9 <0.2 180 1.66 CTMW-2 06/01/2016 8.0 10.99 19 298 2.42 87 292 1.71 NM <1 8.85 259 <50 NA NA <5 <1 18 <5 44.8 325 7 <0.2 200 1.65 CTMW-7 12/21/2010 9.0 21.84 9 477 NM NM NM 128 NM <0.5 <5 37.4 <50 NA NA <5 NA 165 105 NA NA 98.3 <0.1 365 NA CTMW-7 03/08/2011 7.8 22.16 13 572 1.96 46 251 31.8 NM <0.5 <5 36.8 b <50 NA NA <5 NA 673 89.2 NA NA 73 <0.1 373 b NA CTMW-7 06/03/2011 7.5 21.92 20 562 5.2 -57 148 7.33 NM <0.5 <5 41.5 <50 NA NA <5 NA 179 b 148 NA NA 89.3 <0.1 361 NA CTMW-7 03/13/2012 7.3 23.87 18 471 2.32 -43 162 8 NM <0.5 <5 34 <50 NA NA <5 NA 303 b 53 NA NA 67.3 <0.1 353 NA CTMW-7 10/15/2012 7.5 23.75 19 551 1.02 -31 174 4.67 NM <0.5 <5 40.5 <50 NA NA <5 NA 66.6 80.5 NA NA 87.6 <0.1 319 NA CTMW-7 03/04/2013 7.4 22.89 14 570 1.18 98 303 4.08 NM <1 2 34 <50 NA NA <5 NA 19 371 NA NA 76 <0.2 360 NA CTMW-7 06/03/2013 7.3 23.49 20 576 2.17 116 321 2.46 NM <1 2.24 43 <50 NA NA <5 NA 68 291 NA NA 87 1 <0.2 370 NA CTMW-7 DUP 06/03/2013 7.3 23.49 20 576 2.17 116 321 2.46 NM <1 2.2 45 <50 NA NA <5 NA 72 273 NA NA 88 <0.2 360 NA CTMW-7 10/09/2013 7.4 24.11 17 597 0.58 35 240 7.02 NM <1 1.55 45 <50 NA NA <5 NA 99 634 NA NA 89 <0.2 390 NA CTMW-7 03/13/2014 7.1 22.34 12 553 2.8 154 359 2.9 NM <1 1.27 37 51 NA NA <5 NA 64 758 NA NA 91 <0.2 360 NA CTMW-7 06/10/2014 7.3 24.13 20 584 1.6 112 317 2.3 NM <1 1 1.73 45 <50 NA NA <5 NA 30 276 NA NA 85 <0.2 390 NA CTMW-7 10/14/2014 6.8 24.63 20 527 0.5 -4 201 1 1.41 NM <1 1.44 46 52 NA NA <5 NA 43 201 NA NA 87 <0.2 1 370 NA CTMW-7 03/04/2015 7.0 23.80 18 576 1.89 28 233 1.26 NM <1 1.15 36 53 NA NA <5 NA 50 138 NA NA 85 <0.2 350 NA CTMW-7 06/08/2015 7.2 24.43 22 576 1.88 64 269 0.25 NM <1 1.5 49 55 NA NA <5 <1 17 110 21.2 NA 85 <0.2 380 NA CTMW-7 10/07/2015 6.9 23.69 20 586 1.02 96 301 3.73 NM <1 1.57 50 57 NA NA <5 <1 40 448 19.8 497 86 <0.2 360 1.24 CTMW-7 12/03/2015 7.2 23.15 14 533 0.7 6 211 3.6 ND <1 1.18 38 51 <0.03 NA <1 <1 115 511 19.3 442 91 <0.2 340 1.25 CTMW-7 01/07/2016 7.7 22.37 12 568 0.86 -110 95 4.08 0 <1 1.34 43 <50 0.11 NA <1 <1 65 500 19.6 459 90 <0.2 340 3.33 CTMW-7 03/01/2016 6.9 22.27 18 539 2.4 20 225 1.2 0 <1 1.28 36 52 NA NA <5 <1 14 53 19.4 424 85 <0.2 350 2.03 CTMW-7 06/01/2016 7.2 23.74 20 533 1.65 11 216 1.54 NM <1 1.34 39 <50 NA NA <5 <1 41 78 19.5 463 88 <0.2 370 1.27 CTMW-8 12/16/2010 7.5 11.72 14 830 NM NM NM 3.4 NM 1.7 <5 143 228 NA NA <5 NA 1240 409 NA NA 99.3 <0.1 608 NA CTMW-8 03/08/2011 7.4 11.02 16 917 0.6 -127 78 9.67 NM <0.5 6 255 275 NA NA <5 NA 2170 568 NA NA 108 <0.1 616 NA CTMW-8 06/01/2011 7.4 11.58 20 861 0.29 -111 94 5.26 NM <0.5 <5 218 187 NA NA <5 NA 1180 b 475 NA NA 95.2 <0.1 561 NA CTMW-8 10/10/2011 7.4 11.92 18 811 0.56 -88 117 4.7 NM <0.5 <5 241 244 NA NA <5 NA 1230 586 NA NA 16.4 <0.1 480 NA CTMW-8 03/13/2012 7.3 11.40 18 747 1 0.56 -125 80 8.4 NM <0.5 5.8 242 317 NA NA <5 NA 1540 b 709 NA NA 95.3 <0.1 1 503 NA CTMW-8 06/12/2012 7.2 11.68 18 805 2.14 -93 112 4.26 NM <0.5 10.5 262 253 NA NA <5 NA 1680 658 NA NA 90.6 <0.1 502 NA CTMW-8 10/16/2012 7.5 11.97 17 788 0.59 -28 177 3.78 NM <0.5 <5 215 233 NA NA <5 NA 434 269 NA NA 151 <0.1 476 NA CTMW-8 DUP 10/16/2012 7.5 11.97 17 788 0.59 -28 177 3.78 NM <0.5 5.4 1 208 231 NA NA <5 NA 648 404 NA NA 155 <0.1 483 NA CTMW-8 03/05/2013 7.2 11.05 14 798 0.37 -31 174 5.11 NM <1 4.92 205 274 NA NA <5 NA 1190 733 NA NA 87 <0.2 500 NA CTMW-8 06/04/2013 7.3 11.43 18 793 0.78 -14 191 4.08 NM <1 6.01 213 270 NA NA <5 NA 958 737 NA NA 91 <0.2 480 NA CTMW-8 10/08/2013 7.4 11.83 17 773 0.8 -12 193 6.56 NM <1 4.32 200 267 NA NA <5 NA 680 642 NA NA 99 <0.2 480 NA CTMW-8 DUP 10/08/2013 7.4 11.83 17 773 0.8 -12 193 6.56 NM <1 4.32 199 271 NA NA <5 NA 1070 712 NA NA 99 <0.2 480 NA CTMW-8 03/12/2014 7.3 8.68 15 772 0.7 -12 193 4.2 NM <1 6.69 207 345 NA NA <5 NA 1850 947 NA NA 110 <0.2 510 NA CTMW-8 06/10/2014 7.2 11.53 19 753 1 -53 152 2.3 NM <1 4.46 194 328 NA NA <5 NA 1090 814 NA NA 100 <0.2 500 NA CTMW-8 10/14/2014 6.8 11.81 19 721 0.22 -67 138 1.41 NM <1 2.99 176 316 NA NA <5 NA 1040 642 NA NA 100 <0.2 480 NA CTMW-8 03/04/2015 7.1 9.58 15 783 0.23 -62 143 1.93 NM <1 6.69 185 382 NA NA <5 NA 2070 980 NA NA 110 <0.2 480 NA CTMW-8 DUP 03/04/2015 7.1 9.58 15 783 0.23 -62 143 1.93 NM <1 6.81 191 422 NA NA <5 NA 2580 1050 NA NA 110 <0.2 490 NA CTMW-8 06/09/2015 7.3 11.56 19 759 0.55 -111 94 6.97 NM <1 4.55 187 356 NA NA 1 <5 <1 1270 686 66.5 NA 100 <0.2 450 NA CTMW-8 DUP 06/09/2015 7.3 11.56 19 759 0.55 -111 94 6.97 NM <1 5.15 193 368 NA NA <5 <1 1640 750 65.6 NA 110 <0.2 460 NA CTMW-8 06/17/2015 6.7 11.69 18 736 0.29 -189 16 1.2 NM NA NA NA NA NA <0.005 NA NA NA NA NA NA NA NA NA NA CTMW-8 10/07/2015 7.0 10.63 17 1431 0.4 -30 175 2.81 NM <1 2.23 166 375 NA NA <5 <1 1270 754 59.4 808 100 <0.2 1 480 <0.3 P:\Duke Energy Progress.1026\103. Cape Fear Ash Basin GW Assessment\19.EG_CSASUP\Tables\Table 4-4 Bedrock GW Exceedances Incorporating Provisional Background.xlsx Page 3 of 5 TABLE 4-4 BEDROCK GROUNDWATER EXCEEDANCES INCORPORATING PROVISIONAL BACKGROUND CAPE FEAR STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, MONCURE, NC Analytical Parameter pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Barium Boron Chromium (VI) Chromium (VI) Speciation Chromium Cobalt Iron Manganese Sodium Strontium Sulfate Thallium Total Dissolved Solids Vanadium Reporting Units S.U. ft Deg C umhos/cm mg/I mV mV NTUs mg/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I mg/l ug/I mg/I ug/I mg/I ug/I 15A NCAC 02LStandard 6.5-8.5 NE NE NE NE NE NE NE NE 1* 10 700 700 0.07^ 0.07^ 10 1* 300 50 NE NE 250 0.2* 500 0.3* Provisional Background 5.6-8.2 NE NE NE NE NE NE NE NE NE NE 467.1 57.79 0.052 0.052+ NE 8.384 6257 897.4 112.3 987.8 167.4 0.489 946 3.843 Sample ID Sample Collection Date Field Parameters Analytical Results CTMW-8 12/02/2015 7.1 10.80 18 747 0.4 -6 199 4.5 ND <1 1.97 170 344 <0.03 NA <1 <1 550 819 61.5 807 100 <0.2 480 <0.3 CTMW-8 01/06/2016 7.1 8.89 12 732 0.44 -84 121 3.6 0 <1 3.98 173 421 <0.03 NA <1 <1 2320 1270 53 794 110 <0.2 450 <0.3 CTMW-8 03/02/2016 7.1 9.79 14 775 0.49 -105 100 5.1 0 <1 6.3 162 436 NA NA <5 <1 3360 1310 50 764 110 <0.2 480 <0.3 CTMW-8 06/01/2016 7.2 11.05 18 756 0.41 86 291 8.7 NM <1 4.56 163 391 NA NA <5 <1 2200 1110 54.1 847 110 <0.2 490 <0.3 MW-5BR 06/18/2015 11.2 17.86 21 539 1.34 -165 40 3.44 NM <1 <1 37 <50 NA NA 1.07 <1 39 <5 27.7 135 71 <0.2 220 14.4 MW-5BR 09/02/2015 11.1 16.64 23 710 1 -104 101 3 ND <1 1.39 40 <50 NA 0.05j <1 <1 37 1 <5 52.5 192 110 <0.2 310 19.9 MW-5BR 12/02/2015 11.2 12.32 17 955 0.46 -108 98 1.45 NM <1 2.36 42 <50 <0.03 NA <1 <1 22 <5 70.5 297 190 <0.2 460 20.9 MW-5BR 01/07/2016 11.7 11.20 11 878 0.51 -96 109 2.08 0 <1 2.34 44 <50 <0.03 NA <1 <1 <10 <5 61.9 316 200 <0.2 420 19.7 MW-5BRR 03/02/2016 7.3 12.06 15 377 0.5 -29 176 1.5 0 <1 1.06 699 <50 <0.03 NA <1 <1 41 623 12.9 409 13 <0.2 230 0.693 MW-5BRR 06/02/2016 7.4 12.95 22 374 0.55 C 82 287 2.18 0 <1 <1 793 <50 <0.03 M1 NA <1 <1 127 688 13.3 429 17 <0.2 230 <0.3 MW-6BR 06/03/2015 7.5 5.40 19 1294 0.78 -193 12 4.64 NM <1 <1 757 <50 NA NA <1 <1 116 475 94.1 907 39 <0.2 790 2.19 MW-6BR 06/30/2015 7.4 5.06 19 1211 0.31 -248 -43 0.42 0 <1 <1 842 <50 NA NA <1 <1 178 1 743 89.6 946 42 <0.2 770 0.659 MW-6BR 09/01/2015 7.3 5.80 21 1211 0.37 -107 98 3.09 0 <1 <1 713 <50 NA NA <1 <1 177 639 88.2 894 47 0.586 720 0.784 MW-6BR 12/01/2015 7.3 4.43 14 1132 0.6 -62 143 2.06 0 <1 <1 619 <50 <0.03 NA 2.15 <1 239 630 84 821 45 <0.2 600 0.419 MW-6BR 01/06/2016 7.4 4.27 12 1098 1.2 92 297 4.98 NM <1 <1 673 <50 <0.03 NA <1 <1 424 658 85.8 856 46 <0.2 620 0.376 MW-10BR 05/27/2015 8.4 16.60 18 703 0.13 -41 164 3.92 NM <1 2.49 64 110 NA NA <1 <1 137 336 50.5 941 210 <0.2 490 3.34 MW-10BR 06/16/2015 9.0 15.63 18 775 0.21 -260 -55 3.74 NM NA NA NA NA NA 0.023 NA NA NA NA NA NA NA NA NA NA MW-10BR 09/02/2015 9.5 16.06 22 1057 0.51 -147 58 9.81 0 <1 1.86 96 66 NA NA <1 <1 71 32 103 M4 982 340 0.701 690 2.31 M W-10BR 12/03/2015 9.4 13.70 14 1000 0.4 -143 62 6.94 0 <1 1.4 146 57 0.036 NA <1 <1 149 23 98 996 390 <0.2 590 1.02 M W-10BR 01/07/2016 8.0 12.44 14 731 0.5 -219 -14 2.9 0 <1 1.8 76 83 <0.03 NA <1 <1 36 167 68.6 839 270 <0.2 480 0.862 MW-10BRL 07/13/2016 7.9 33.20 21 313 1.9 146 351 9.7 NM <1 1.4 47 121 <0.03 NA <1 <1 164 17 60.8 132 26 <0.2 190 3.69 MW-10D 05/28/2015 6.6 15.40 18 1214 1.18 136 341 4.95 NM <1 1.88 56 221 NA NA <1 <1 243 974 22.6 1300 410 0.233 890 0.938 MW-101D 06/16/2015 6.5 15.56 21 1552 0.58 -105 100 1.54 NM NA NA NA NA NA 0.006 NA NA NA NA NA NA NA NA NA NA MW-10D 09/02/2015 6.4 15.70 19 1930 0.8 20 225 2.29 0 <1 3.17 43 478 NA NA <1 <1 346 1050 32.8 1 1950 1600 0.27 1400 0.626 MW-10D DUP 09/02/2015 6.4 15.70 19 1930 0.8 20 225 2.29 0 <1 2.31 37 372 NA NA <1 <1 294 1080 27.6 1660 1200 <0.2 1200 0.603 MW-10D 12/03/2015 6.3 13.69 14 3529 0.47 24 229 1.71 0.5 <1 2.14 38 511 <0.03 NA <1 <1 342 1060 34.4 2070 810 <0.2 1300 0.315 MW-101D 01/07/2016 6.1 12.22 11 1842 0.5 -147 58 0.81 0.5 <1 2.47 37 459 <0.03 NA <1 <1 419 1190 33.1 1900 840 <0.2 1400 <0.3 MW-12BR 03/19/2015 7.4 10.90 16 523 0.28 -43 162 3.88 0 <1 1.12 612 <50 NA NA <1 <1 107 482 39.6 453 12 <0.2 280 0.338 MW-12BR 06/11/2015 7.4 11.71 19 589 0.44 -180 26 4.08 NM NA NA NA NA NA 0.045 NA NA NA NA NA NA NA NA NA NA M W-12BR 09/01/2015 7.5 11.98 21 600 0.59 -134 71 7.75 NM <1 1.31 711 <50 NA NA <1 <1 96 613 42.4 1 488 23 <0.2 330 0.355 MW-12BR 12/01/2015 7.6 10.59 16 588 0.3 -217 -12 1 ND <1 1.2 693 <50 <0.03 NA <1 <1 22 615 40.9 482 25 <0.2 330 <0.3 MW-12BR 01/05/2016 7.7 8.90 11 585 0.38 -131 74 0 0 <1 1.13 735 <50 <0.03 NA <1 <1 16 650 41 493 27 <0.2 370 <0.3 MW-12BR 03/01/2016 7.4 8.95 15 580 0.39 -139 66 1.3 0 <1 1.07 708 <50 0.051 NA <1 <1 13 623 44.1 486 28 <0.2 340 <0.3 MW-12BR 06/02/2016 7.4 10.58 18 602 0.3 C -44 161 0.9 0 <1 1.17 720 <50 <0.03 NA <1 <1 16 643 41.8 502 31 <0.2 340 0.32 MW-14 09/03/2013 8.9 12.18 22 180 0.27 -388 NM 699 NM 0.44j 3.3 1 132 123 1 NA NA 12.8j NA 7370 1 525 83.6 NA 30.9 <0.15 266 NA MW-14 06/30/2015 9.1 11.80 19 423 0.13 -309 -104 31.6 0 1 <1 <1 64 132 NA NA 1.06 <1 419 24 81.9 1 278 30 <0.2 260 1.37 MW-14 12/03/2015 9.3 10.72 12 361 0.2 -99 106 76.9 ND <1 <1 62 122 <0.03 NA 1.67 <1 1390 60 75.7 225 30 <0.2 260 1.75 MW-17BR 03/19/2015 8.2 6.34 14 491 0.23 -19 186 4.6 0 <1 2.24 536 <50 NA NA <1 <1 143 34 54.9 595 38 <0.2 290 0.761 MW-17BR 06/10/2015 8.5 8.80 22 422 0.35 -358 -153 4 NM NA NA NA NA NA 0.393 NA NA NA NA NA NA NA NA NA NA M W-17BR 09/01/2015 8.2 9.98 18 522 0.2 -235 -30 1.4 ND <1 <1 485 <50 NA NA <1 <1 39 59 58.6 660 30 <0.2 310 0.485 MW-17BR 12/01/2015 7.8 6.59 13 553 0.3 -184 21 8.44 NM <1 <1 596 <50 <0.03 NA <1 <1 300 70 52.8 706 28 <0.2 300 0.72 MW-17BR 01/05/2016 8.2 5.62 11 502 0.53 -218 -13 1.66 NM <1 <1 612 <50 <0.03 NA <1 <1 69 59 54.1 1 709 25 <0.2 340 <0.3 MW-20BR 05/27/2015 7.7 13.00 16 331 0.07 -124 81 6.37 NM <1 1.57 145 <50 NA NA <1 <1 730 131 40 317 12 <0.2 210 1.61 MW-20BR 06/11/2015 8.0 13.12 18 329 0.18 -170 35 28.5 NM NA NA NA NA NA 0.022 NA NA NA NA NA NA NA NA NA NA M W-20BR 09/01/2015 7.9 13.38 18 499 0.24 -204 1 8.55 0 <1 <1 136 <50 NA NA <1 <1 214 127 43.6 314 14 <0.2 220 0.468 MW-20BR 12/01/2015 7.9 12.59 1 15 341 0.18 -163 42 9.76 0 <1 <1 136 <50 <0.03 NA <1 <1 182 1 121 40.1 312 11 <0.2 210 0.765 MW-20BR 01/06/2016 7.9 10.47 1 15 352 0.28 -213 -8 4.7 1 NM <1 <1 144 <50 <0.03 1 NA <1 <1 186 1 128 42.3 323 17 <0.2 190 0.315 P:\Duke Energy Progress.1026\103. Cape Fear Ash Basin GW Assessment\19.EG_CSASUP\Tables\Table 4-4 Bedrock GW Exceedances Incorporating Provisional Background.xlsx Page 4 of 5 TABLE 4-4 BEDROCK GROUNDWATER EXCEEDANCES INCORPORATING PROVISIONAL BACKGROUND CAPE FEAR STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, MONCURE, NC Analytical Parameter pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Barium Boron Chromium (VI) Chromium (VI) Speciation Chromium Cobalt Iron Manganese Sodium Strontium Sulfate Thallium Total Dissolved Solids Vanadium Reporting Units S.U. ft Deg C umhos/cm mg/I mV mV NTUs mg/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I ug/I mg/l ug/I mg/I ug/I mg/I ug/I 15A NCAC 02L Standard 6.5-8.5 NE NE NE NE NE NE NE NE 1* 10 700 700 0.07^ 0.07^ 10 1* 300 50 NE NE 250 0.2* Soo 0.3* Provisional Background 5.6-8.2 NE NE NE NE NE NE NE NE NE NE 467.1 57.79 0.052 0.052+ NE 8.384 6257 897.4 112.3 987.8 167.4 0.489 946 3.843 Sample ID Sample Collection Date Field Parameters Analytical Results MW-20BR DUP 01/06/2016 7.9 10.47 15 352 0.28 -213 -8 4.7 NM <1 <1 141 <50 <0.03 NA <1 <1 198 127 41.3 313 13 <0.2 200 0.318 MW-21BR 05/07/2015 8.8 20.45 30 368 1.7 60 265 4.78 NM <1 1.98 106 151 NA NA <1 <1 209 <5 70.1 109 5.9 <0.2 180 0.997 MW-21BR 06/10/2015 8.8 19.57 28 377 2.2 -159 46 3.88 NM NA NA NA NA NA 0.11 NA NA NA NA NA NA NA NA NA NA MW-21BR 09/01/2015 8.8 19.29 31 414 0.6 31 236 2 ND <1 1.85 97 138 NA NA 31 <1 184 7 82 103 7.3 <0.2 210 0.736 MW-21BR 12/01/2015 8.6 18.87 14 409 0.5 -6 199 1 ND <1 2.27 107 143 0.1 NA 1.41 <1 83 7 77.9 108 7 <0.2 200 0.395 MW-21BR 01/05/2016 8.7 18.87 12 385 0.5 -103 102 2.6 0 <1 2.23 106 145 0.058 NA 3 <1 102 5 75.5 113 8.5 <0.2 230 0.688 MW-22BR 07/12/2016 8.4 9.85 24 491 0.52 -14 192 5.34 0.5 <1 1.64 712 <50 <0.03 NA <1 <1 1 437 182 61.4 546 18 <0.2 430 0.775 MW-23BR 07/12/2016 7.8 10.60 23 655 0.43 77 282 9.87 0 <1 3.27 396 <50 0.18 NA <1 <1 217 358 58.3 874 51 <0.2 380 5.31 MW-23D 07/12/2016 8.1 8.07 21 527 0.57 19 224 3.3 0 <1 3.6 85 <50 0.096 NA <1 <1 53 223 52.5 330 65 <0.2 300 11.4 PZ-3D 03/07/2007 7.8 2.11 56 814 NM NM NM NM NM <0.58 2.3 313 42.7 NA NA 36.8 NA <20 518 83.9 NA 68 <0.044 440 NA PZ-3D 12/19/2007 7.7 2.83 60 575 NM NM NM NM NM <0.3 5.2 338 41.8 NA NA <0.059 NA 161 540 NA NA 75.9 0.013 410 NA PZ-3D 04/30/2008 7.8 2.20 61 566 NM NM NM NM NM I 0.57 4.3 295 39.8 NA NA 0.47 NA <8.5 98.3 NA NA 82.8 <0.068 445 NA PZ-3D 06/03/2009 7.0 2.81 71 658 NM NM NM NM NM <2 3.3 296 <200 NA NA <2 NA <100 70.7 NA NA 87 <1 472 NA PZ-3D 10/19/2009 7.5 3.22 65 565 NM NM NM NM NM <2 4.2 269 <200 NA NA 2.1 NA <100 133 NA NA 80 <1 1 419 NA PZ-3D 08/05/2015 7.6 6.05 23 645 0.47 -38 167 4.41 NM <1 5.49 138 <50 NA NA <1 <1 97 475 73.2 646 74 <0.2 390 0.384 PZ-3D 12/03/2015 7.4 4.08 16 714 0.21 -60 145 2.3 NM <1 4.84 139 52 <0.03 NA <1 <1 75 548 73.4 677 73 <0.2 770 <0.3 PZ-3D 01/07/2016 7.8 3.69 14 668 2.16 75 280 0. 6L_j 0 <1 4.57 145 58 0.45 NA <1 <1 20 29 64.4 633 83 <0.2 380 <0.3 Prepared by: BER Checked By: MCD Notes: Concentration exceeds the 15A NCAC 02L Standard, Appendix 2, April 1, 2013, or provisional background concentration (whichever is greater). 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 mg/I = Milligram per liter DO = Dissolved oxygen ft = Feet mV = Millivolts ORP = Oxidation Reduction Potential NA = Not analyzed ug/I = Microgram per liter Eh = Redox Potential NM = Not measured ND = Not Detected Temp = Temperature NC DHHS Health Screening Level < = Concentration not detected at or above the reporting limit. * = Interim Maximum Allowable Concentrations (IMACs) of the 15A NCAC 02L Standard, Appendix 1, April 1, 2013. 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. M1 = Matrix spike recovery was high: the associated Laboratory Control Spike (LCS) was acceptable. M4 = The spike recovery valuable was unusable since the analyte concentration in the sample was disproportionate to the spike level. j = Indicates concentration reported below Practical Quantitation Limit (PQL), but above Method Detection Limit (MDL) and therefore concentration is estimated. Data not used in provisional background concentration determinations. + = Chromium (VI) speciation samples were analyzed using IC-ICP-DRC-MS method as opposed to ICP-MS method and were not analyzed in background wells. Chromium (VI) PBC is based on background samples analyzed using ICP-MS method. Therefore, Chromium (VI) PBC is used for comparison only to speciation analytical results. P:\Duke Energy Progress.1026\103. Cape Fear Ash Basin GW Assessment\19.EG_CSASUP\Tables\Table 4-4 Bedrock GW Exceedances Incorporating Provisional Background.xlsx Page 5 of 5 TABLE 4-5 SURFICIAL BACKGROUND GROUNDWATER UPPER PREDICTION LIMIT CAPE FEAR STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, MONCURE, 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 (21 Future Samples) UPL (27 Future Samples) Sensitivity Analysis+ (a/o) Aluminum ug/L 11 11 17 261 90.91 95% WH Approx. Gamma UPL 253 589.6 627.1 6.0 Arsenic ug/L 11 5 1.91 2.86 2.392 95% WH Approx. Gamma UPL 3.033 4.33 4.454 2.8 Barium ug/L 11 11 69 202 117.5 95% UPL (np) 202 202 202 --- Beryllium ug/L 11 0 --- --- --- --- --- --- --- --- Boron ug/L 11 5 81 140 117.4 95% WH Approx. Gamma UPL 182 359.2 378.1 5.0 Cadmium ug/L 11 0 --- --- --- --- --- --- --- --- Chloride mg/L 11 11 6.3 280 112.2 95% UPL (np) 280 280 280 --- Chromium (hexavalent) ug/L 7 0 --- --- --- --- --- --- --- Chromium ug/L 11 1 --- 1.22 --- --- --- --- --- --- Cobalt ug/L 11 9 1 21.1 10.66 95% WH Approx. Gamma UPL 35.95 108.9 117.6 7.4 Iron ug/L 11 11 93 45,500 20,862 95% UPL (np) 45,500 45,500 45,500 --- Manganese ug/L 11 11 19 4,560 1,988 95% UPL (np) 4,560 4,560 4,560 --- Nickel ug/L 11 7 1.27 3.14 2.143 95% WH Approx. Gamma UPL 4.075 8.813 9.33 5.5 Nitrate as N mg-N/L 11 8 0.016 0.117 0.0336 95% UPL (t) lognormal 0.0951 0.515 0.594 13.3 Selenium ug/L 11 0 --- --- --- --- --- --- --- --- Sodium mg/L 11 11 15.5 104 51.54 95% UPL (np) 104 104 104 --- Strontium ug/L 11 11 101 758 347.5 95% UPL (np) 758 758 758 --- Sulfate mg/L 11 11 25 80 46.36 95% WH Approx. Gamma UPL 74.61 114.2 118.1 3.3 Thallium ug/L 11 0 --- --- --- --- --- Total Dissolved Solids mg/L 11 11 160 830 390 95% UPL (np) 830 830 830 --- Vanadium ug/L 11 9 0.322 1.1 0.641 95% WH Approx. Gamma UPL 1.289 2.616 2.758 5.1 Zinc ug/L 10 0 --- --- --- --- --- --- Prepared by: MCD Checked by: HHS Notes: Wells included for background analysis: MW-15SL and MW-16S UPL - Upper Prediction Limit NP - Non -parametric Gamma - Gamma data transformation Lognormal - Lognormal data transformation ug/L = microgram per liter mg/L = milligrams per liter mg-N/L = Milligram Nitrogen per liter 21 Future Samples = 7 downgradient wells x 3 sampling events 27 Future Samples = (7 downgradient wells x 3 sample events) + (2 background surficial wells x 3 sample events) + = Sensitivity analysis describes the percent change from anticipated future samples accounting for downgradient wells exclusively to future samples accounting for background and downgradient wells. P:\Duke Energy Progress. 1026\103. Cape Fear Ash Basin GW Assessment\19.EG_CSASUP\Tables\Table 4-5 Surficial BG GW Upper Prediction Limit.xlsx Page 1 of 1 TABLE 4-6 BEDROCK BACKGROUND GROUNDWATER UPPER PREDICTION LIMIT CAPE FEAR STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, MONCURE, 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 (12 Future Samples) UPL (24 Future Samples) Sensitivity Analysis (0/0) Aluminum ug/L 21 21 7 147 47.48 95% WH Approx. Gamma UPL 136 263.5 305.4 13.7 Antimony ug/L 21 0 --- --- --- --- --- --- --- Arsenic ug/L 21 10 1.06 8.25 4.78 95% KM UPL (t) normal 7.459 10.71 11.53 7.1 Barium ug/L 21 21 46 468 319.4 95% UPL (np) 467.1 467.1 467.1 --- Beryllium ug/L 21 0 --- --- --- --- --- --- --- --- Boron ug/L 21 3 51 53 52 95% UPL (t) lognormal 52.48 56.67 57.79 1.9 Cadmium ug/L 21 0 --- --- --- --- --- --- --- --- Chloride mg/L 20 20 13 250 95.85 95% WH Approx. Gamma UPL 289.4 577.2 673.2 14.3 Chromium (VI) ug/L 12 1 --- 0.052 --- --- --- --- --- --- Chromium ug/L 21 0 --- --- --- --- --- --- --- --- Cobalt ug/L 21 4 1.02 6.7 2.978 95% WH Approx. Gamma UPL 2.125 6.646 8.384 20.7 Iron ug/L 21 21 10 2,290 620.8 95% WH Approx. Gamma UPL 2,248 5,219 6,257 16.6 Manganese ug/L 21 21 46 905 412.9 95% UPL (nip) 897.4 897.4 897.4 --- Nickel ug/L 21 6 1.4 3.39 2.425 95% WH Approx. Gamma UPL 3.858 10.29 12.64 18.6 Nitrate as N mg-N/L 20 7 0.016 2.7 1.142 95% WH Approx. Gamma UPL 2.023 5.899 7.366 19.9 Selenium ug/L 21 6 1.62 2.38 1.935 95% WH Approx. Gamma UPL 2.539 4.015 4.465 10.1 Sodium mg/L 21 21 36.1 77.7 53.13 95% WH Approx. Gamma UPL 80.32 105.2 112.3 6.3 Strontium ug/L 21 21 409 771 560.3 95% WH Approx. Gamma UPL 764.5 939.4 987.8 4.9 Sulfate mg/L 20 20 1.6 120 46.98 95% UPL (t) normal 110.9 155.9 167.4 6.9 Thallium ug/L 21 1 --- 0.489 --- --- --- --- --- --- Total Dissolved Solids mg/L 20 20 240 660 408.5 95% WH Approx. Gamma UPL 649.5 879.4 946 7.0 Vanadium ug/L 1 21 8 0.372 2.83 1.777 1 95% KM UPL (t) normal 2.452 3.561 1 3.843 7.3 Zinc ug/L 21 5 6 14 10.6 95% WH Approx. Gamma UPL 17.47 47.16 1 58.06 18.8 Prepared by: MCD Checked by: HHS Notes• Wells included for background analysis: MW-09, MW-09BR, MW-15BR, and MW-16BR UPL - Upper Prediction Limit NP - Non -parametric Gamma - Gamma data transformation Lognormal - Lognormal data transformation ug/L = microgram per liter mg/L = milligrams per liter mg-N/L = Milligram Nitrogen per liter 12 Future Samples = 4 downgradient wells x 3 sampling events 24 Future Samples = (4 downgradient wells x 3 sampling events) + (4 background wells x 3 sampling events) + = Sensitivity analysis describes the percent change from anticipated future samples accounting for downgradient wells exclusively to future samples accounting for background and downgradient wells. P:\Duke Energy Progress. 1026\103. 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