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HomeMy WebLinkAboutNC0001422_SupplementalTables_20160801TABLE 1-1 WELL CONSTRUCTION DATA L.V. SUTTON ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, WILMINGTON, NC ID Program Date Installed Monitoring Zone Material Diameter (Inches) Northing (Feet) Easting (Feet) Measuring Point TOC Elevation (Feet-MSL) Ground Surface Elevation (Feet-MSL) Measured Well Depth1 (Feet-TOC) Screen Length (Feet) Top of Screen Elevation (Feet-MSL) Bottom of Screen Elevation (Feet-MSL) Ash Basin ABMW-01D CAMA 03/28/15 PeeDee PVC 2 198964.17 2305386.78 45.71 45.71 110.50 5 -59.79 -64.79 ABMW-01S CAMA 03/29/15 Ash PVC 2 198968.22 2305388.87 48.49 45.75 79.30 5 -25.81 -30.81 ABMW-02D CAMA 03/27/15 Surficial PVC 2 197177.19 2305583.43 12.71 10.10 48.98 4 -32.27 -36.27 ABMW-02S CAMA 03/27/15 Ash PVC 2 197177.71 2305589.13 12.82 9.98 10.83 5 6.99 1.99 Data Gap Wells MW-05CD CAMA 06/06/16 PeeDee PVC 2 205868.20 2303794.14 15.51 12.69 77.58 5 -57.07 -62.07 MW-05D CAMA,CCR 06/04/16 PeeDee PVC 2 205871.90 2303800.14 15.27 12.80 103.23 10 -77.96 -87.96 MW-05E CAMA 06/03/16 PeeDee PVC 2 205871.93 2303803.16 15.77 12.83 153.79 5 -133.02 -138.02 MW-23D CAMA 06/07/16 PeeDee PVC 2 198966.71 2306927.13 17.92 15.04 102.53 5 -79.61 -84.61 MW-37CD CAMA 06/07/16 PeeDee PVC 2 193808.85 2308998.14 23.74 20.67 77.82 5 -49.08 -54.08 MW-37D CAMA,CCR 06/04/16 PeeDee PVC 2 193812.39 2308989.04 23.78 21.01 102.60 10 -68.82 -78.82 MW-37E CAMA 06/03/16 PeeDee PVC 2 193815.94 2308979.94 23.82 20.93 152.59 5 -123.77 -128.77 MW-38B CAMA 06/08/16 Surficial PVC 2 202963.06 2304436.71 15.81 13.02 27.55 5 -6.74 -11.74 MW-38C CAMA 06/08/16 Surficial PVC 2 202955.78 2304436.78 15.85 13.00 47.77 5 -26.92 -31.92 MW-38D CAMA 06/07/16 PeeDee PVC 2 202948.50 2304436.86 15.88 13.01 103.65 5 -82.77 -87.77 MW-39B CAMA 06/06/16 Surficial PVC 2 202605.27 2303609.74 21.39 18.31 27.35 5 -0.96 -5.96 MW-39C CAMA 06/06/16 Surficial PVC 2 202601.57 2303603.73 21.01 18.05 47.51 5 -21.50 -26.50 MW-39D CAMA 06/04/16 PeeDee PVC 2 202597.90 2303600.75 20.85 17.87 103.04 5 -77.19 -82.19 MW-40B CAMA 06/02/16 Surficial PVC 2 202121.73 2304378.80 13.94 11.17 24.62 5 -5.68 -10.68 MW-40C CAMA 06/02/16 Surficial PVC 2 202121.79 2304384.84 14.03 11.12 45.31 5 -26.28 -31.28 MW-40D CAMA 06/02/16 PeeDee PVC 2 202118.21 2304390.92 13.97 11.22 92.94 5 -73.97 -78.97 Compliance Wells MW-04B NPDES 12/12/86 Surficial PVC 2 194232.85 2308900.30 17.10 15.91 44.72 5 -22.62 -27.62 MW-05C NPDES,CAMA,CCR 12/15/86 Surficial PVC 2 205901.75 2303862.83 13.32 13.00 44.66 5 -26.34 -31.34 MW-07C NPDES 12/14/15 Surficial PVC 2 196599.00 2307569.14 15.98 15.74 44.90 5 -23.92 -28.92 MW-12 NPDES 02/06/90 Surficial PVC 2 199644.36 2307510.35 21.87 22.23 49.30 5 -22.43 -27.43 MW-19 NPDES 06/22/04 Surficial PVC 2 197831.75 2307042.61 30.28 28.73 52.98 5 -17.70 -22.70 MW-21C NPDES 09/16/11 Surficial PVC 2 197773.24 2306913.33 30.14 27.64 48.25 5 -13.11 -18.11 MW-22B NPDES 09/15/11 Surficial PVC 2 198349.20 2307017.22 19.20 16.59 29.73 4 -6.53 -10.53 MW-22C NPDES 09/15/11 Surficial PVC 2 198349.58 2307023.80 19.26 16.74 47.48 5 -23.22 -28.22 MW-23B NPDES 09/06/11 Surficial PVC 2 198967.48 2306901.58 16.26 14.20 29.20 5 -7.94 -12.94 MW-23C NPDES 09/07/11 Surficial PVC 2 198972.43 2306903.62 16.77 14.17 47.55 5 -25.78 -30.78 MW-24B NPDES 09/09/15 Surficial PVC 2 200712.44 2306251.22 15.38 12.62 30.50 4 -11.12 -15.12 MW-24C NPDES 09/13/11 Surficial PVC 2 200716.51 2306263.95 15.01 12.47 47.96 5 -27.95 -32.95 MW-27B NPDES 09/08/11 Surficial PVC 2 202583.30 2304678.40 14.34 --30.60 5 -11.26 -16.26 MW-28B NPDES 09/28/11 Surficial PVC 2 197368.42 2307360.26 31.85 28.63 33.96 5 2.89 -2.11 MW-28C NPDES 09/21/11 Surficial PVC 2 197356.57 2307354.01 31.05 28.17 48.40 5 -12.35 -17.35 MW-31C NPDES 09/14/11 Surficial PVC 2 201047.15 2306858.44 17.63 14.96 48.34 5 -25.71 -30.71 MW-32C NPDES 11/14/13 Surficial PVC 2 197686.00 2307878.15 34.91 33.48 52.98 5 -13.07 -18.07 MW-33C NPDES 11/13/13 Surficial PVC 2 197599.01 2308275.12 24.58 22.28 48.39 5 -18.81 -23.81 MW-37B NPDES,CAMA,CCR 02/04/15 Surficial PVC 2 193820.03 2308956.68 23.71 20.88 27.50 5 1.21 -3.79 MW-37C NPDES,CAMA,CCR 02/04/15 Surficial PVC 2 193819.39 2308959.44 23.72 20.94 44.90 5 -16.18 -21.18 P:\Duke Energy Progress.1026\108. Sutton Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 1-1 Well Construction Data Page 1 of 3 TABLE 1-1 WELL CONSTRUCTION DATA L.V. SUTTON ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, WILMINGTON, NC ID Program Date Installed Monitoring Zone Material Diameter (Inches) Northing (Feet) Easting (Feet) Measuring Point TOC Elevation (Feet-MSL) Ground Surface Elevation (Feet-MSL) Measured Well Depth1 (Feet-TOC) Screen Length (Feet) Top of Screen Elevation (Feet-MSL) Bottom of Screen Elevation (Feet-MSL) Previously Installed Wells AW-01B CAMA 01/31/15 Surficial PVC 2 203061.52 2306091.45 20.14 20.43 28.00 5 -2.86 -7.86 AW-01C CAMA 01/31/15 Surficial PVC 2 203064.29 2306090.62 20.11 20.49 48.90 5 -23.79 -28.79 AW-02B CAMA 01/31/15 Surficial PVC 2 202156.54 2306450.34 25.26 25.50 22.35 5 7.91 2.91 AW-02C CAMA 01/31/15 Surficial PVC 2 202160.60 2306445.87 23.64 23.98 43.70 5 -15.06 -20.06 AW-02D CAMA 05/10/15 PeeDee PVC 2 202147.24 2306457.80 25.57 25.90 98.30 5 -67.73 -72.73 AW-03B CAMA 02/02/15 Surficial PVC 2 201583.47 2306678.65 19.66 19.87 26.68 5 -2.02 -7.02 AW-03C CAMA 02/02/15 Surficial PVC 2 201584.90 2306673.75 19.93 20.07 46.92 5 -21.99 -26.99 AW-04C CAMA 01/29/15 Surficial PVC 2 198803.16 2307818.22 18.94 19.38 46.90 5 -22.96 -27.96 AW-04B CAMA 01/30/15 Surficial PVC 2 198813.04 2307820.80 19.31 19.69 26.30 5 -1.99 -6.99 AW-05B CAMA 02/02/15 Surficial PVC 2 198021.26 2308134.95 26.67 23.70 27.64 5 4.03 -0.97 AW-05C CAMA 02/02/15 Surficial PVC 2 198024.46 2308133.35 26.73 23.69 48.29 5 -16.56 -21.56 AW-05D CAMA 06/10/15 PeeDee PVC 2 198024.76 2308125.18 26.35 23.78 102.80 10 -66.45 -76.45 AW-05E CAMA 05/08/15 PeeDee PVC 2 198018.09 2308127.63 26.04 23.50 154.15 10 -118.11 -128.11 AW-06B CAMA 01/31/15 Surficial PVC 2 199639.86 2307503.90 22.26 22.46 29.95 5 -2.69 -7.69 AW-06D CAMA 01/31/15 PeeDee PVC 2 199642.41 2307502.89 22.08 22.47 113.48 5 -86.40 -91.40 AW-06E CAMA 05/12/15 PeeDee PVC 2 199648.76 2307507.43 22.13 22.35 154.24 10 -122.11 -132.11 AW-07D CAMA 01/31/15 PeeDee PVC 2 201037.19 2306853.91 17.65 14.80 101.58 5 -78.93 -83.93 AW-08B CAMA 02/05/15 Surficial PVC 2 203420.00 2304212.85 16.43 13.47 28.33 5 -6.90 -11.90 AW-08C CAMA 02/04/15 Surficial PVC 2 203419.38 2304205.34 16.52 13.40 48.64 5 -27.12 -32.12 AW-09B CAMA 02/03/15 Surficial PVC 2 196083.31 2307795.83 17.46 14.13 26.91 5 -4.45 -9.45 AW-09C CAMA 02/03/15 Surficial PVC 2 196081.45 2307793.85 17.36 14.26 48.39 5 -26.03 -31.03 AW-09D CAMA 05/07/15 Surficial PVC 2 196076.31 2307788.10 17.28 14.59 102.65 5 -80.37 -85.37 MW-23E CAMA 05/12/15 PeeDee PVC 2 198979.66 2306894.64 16.56 13.79 155.05 10 -128.49 -138.49 SMW-01B CAMA 04/14/15 Surficial PVC 2 199292.01 2308712.96 13.87 13.91 24.10 5 -5.23 -10.23 SMW-01C CAMA 04/14/15 Surficial PVC 2 199295.12 2308717.75 13.90 13.99 46.18 5 -27.28 -32.28 SMW-02B CAMA 03/24/15 Surficial PVC 2 198396.18 2308908.42 20.59 17.38 28.03 7 -0.44 -7.44 SMW-02C CAMA 03/24/15 Surficial PVC 2 198403.45 2308904.84 20.66 17.50 48.77 5 -23.11 -28.11 SMW-03B CAMA 03/25/15 Surficial PVC 2 197748.56 2309459.02 18.31 15.43 27.70 5 -4.39 -9.39 SMW-03C CAMA 03/25/15 Surficial PVC 2 197745.03 2309453.18 18.18 15.33 49.00 5 -25.82 -30.82 SMW-04B CAMA 01/30/15 Surficial PVC 2 202569.12 2307663.93 16.34 13.03 27.10 5 -5.76 -10.76 SMW-04C CAMA 04/13/15 Surficial PVC 2 202565.07 2307665.57 15.67 12.69 47.41 5 -26.74 -31.74 SMW-05B CAMA 04/13/15 Surficial PVC 2 201027.58 2308551.36 16.43 13.63 27.45 5 -6.02 -11.02 SMW-05C CAMA 04/13/15 Surficial PVC 2 201027.18 2308554.63 16.33 13.49 46.80 5 -25.47 -30.47 SMW-06B CAMA 04/10/15 Surficial PVC 2 200222.83 2309008.69 15.86 13.87 27.40 5 -6.54 -11.54 SMW-06C CAMA 04/10/15 Surficial PVC 2 200222.29 2309012.80 16.05 13.03 47.12 5 -26.07 -31.07 SMW-06D CAMA 04/08/15 PeeDee PVC 2 200221.20 2309017.66 16.37 12.80 109.87 5 -88.50 -93.50 MW-04 CAMA 12/13/84 Surficial PVC 2 194238.17 2308898.63 16.18 15.67 26.98 5 -5.80 -10.80 MW-04A CAMA 12/13/86 Surficial PVC 2 194244.91 2308896.94 15.61 15.51 18.08 5 2.53 -2.47 MW-05A CAMA 12/16/86 Surficial PVC 2 205923.44 2303854.09 12.56 11.97 17.03 5 0.53 -4.47 MW-05B CAMA,CCR 12/15/86 Surficial PVC 2 205913.11 2303859.22 13.56 12.52 27.55 5 -8.99 -13.99 MW-07A CAMA 12/14/86 Surficial PVC 2 196607.25 2307576.07 17.13 15.79 17.00 5 5.13 0.13 P:\Duke Energy Progress.1026\108. Sutton Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 1-1 Well Construction Data Page 2 of 3 TABLE 1-1 WELL CONSTRUCTION DATA L.V. SUTTON ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, WILMINGTON, NC ID Program Date Installed Monitoring Zone Material Diameter (Inches) Northing (Feet) Easting (Feet) Measuring Point TOC Elevation (Feet-MSL) Ground Surface Elevation (Feet-MSL) Measured Well Depth1 (Feet-TOC) Screen Length (Feet) Top of Screen Elevation (Feet-MSL) Bottom of Screen Elevation (Feet-MSL) MW-07B CAMA 12/14/15 Surficial PVC 2 196603.05 2307572.21 16.59 15.63 27.95 5 -6.36 -11.36 MW-08 CAMA 02/07/90 Surficial PVC 2 206893.50 2304447.55 16.43 13.73 UNK 10 NA NA MW-09 CAMA 02/07/90 Surficial PVC 2 204973.42 2305308.13 26.49 23.25 52.95 10 -16.46 -26.46 MW-10 CAMA 02/08/90 Surficial PVC 2 203190.66 2304860.99 26.46 22.90 UNK 10 NA NA MW-13 CAMA 05/25/04 Surficial PVC 3 197948.14 2305008.16 18.21 15.09 11.99 10 16.22 6.22 MW-13D CAMA 01/28/05 Surficial PVC 4 197965.38 2305017.45 18.16 15.53 40.88 5 -17.72 -22.72 MW-14 CAMA 06/22/04 Surficial PVC 2 197252.17 2306178.43 14.15 10.96 14.39 10 9.76 -0.24 MW-15 CAMA 06/22/04 Surficial PVC 2 196475.65 2306044.01 11.47 8.53 14.35 10 7.12 -2.88 MW-15D CAMA 02/04/04 Surficial PVC 2 196476.98 2306061.06 11.21 8.61 47.58 5 -31.37 -36.37 MW-16 CAMA 06/22/04 Surficial PVC 2 196976.18 2306753.16 16.91 14.11 15.14 10 11.77 1.77 MW-16D CAMA 02/04/04 Surficial PVC 2 196962.70 2306758.11 13.66 10.73 49.33 5 -30.67 -35.67 MW-18 CAMA 06/22/04 Surficial PVC 2 198101.81 2306589.96 20.76 19.27 UNK 5 NA NA MW-20 CAMA 02/04/05 Surficial PVC 2 196257.98 2305318.00 13.70 10.78 17.08 10 6.62 -3.38 MW-20D CAMA 02/04/05 Surficial PVC 2 1962556.89 2305326.09 13.66 10.73 51.29 5 -32.63 -37.63 MW-27C CAMA 05/12/14 Surficial PVC 8 202583.80 2304674.50 --11.50 48.72 5 NA NA MW-28T CAMA 09/27/11 PeeDee PVC 2 197369.96 2307352.75 32.22 29.33 64.20 5 -26.98 -31.98 MW-31B CAMA 09/13/11 Surficial PVC 2 201044.81 2306851.38 17.53 15.02 30.39 5 -7.86 -12.86 PZ-06S -11/25/08 Surficial PVC 2 204190.02 2305617.93 27.38 27.72 25.00 10 12.38 2.38 PZ-06D -12/16/08 PeeDee PVC 2 204198.64 2305619.96 28.51 28.79 98.95 20 -50.44 -70.44 PZ-10D -12/03/08 PeeDee PVC 2 203125.77 2305120.84 26.53 23.90 100.55 20 -50.44 -70.44 PZ-10S -11/21/08 Surficial PVC 2 203140.53 2305115.70 26.74 24.80 47.62 10 -10.88 -20.88 GWPZ-1A -05/08/14 Surficial PVC 8 202183.50 2304953.20 16.89 13.30 UNK 5 NA NA GWPZ-1B -05/08/14 Surficial PVC 8 202181.70 2304948.20 16.64 13.70 UNK 5 NA NA GWPZ-2A -05/08/14 Surficial PVC 8 201760.40 2305335.10 18.33 15.10 UNK 5 NA NA GWPZ-2B -05/08/14 Surficial PVC 8 201755.60 2305337.30 18.44 15.20 UNK 5 NA NA GWPZ-3A -05/07/14 Surficial PVC 8 200404.00 2305825.50 22.00 18.60 UNK 5 NA NA GWPZ-3B -05/07/14 Surficial PVC 8 200405.30 2305829.60 21.99 18.70 UNK 5 NA NA GWPZ-4A -05/07/14 Surficial PVC 8 199057.60 2306398.80 21.24 18.30 UNK 5 NA NA GWPZ-4B -05/07/14 Surficial PVC 8 199058.80 2306403.60 21.20 18.30 UNK 5 NA NA PZ-INT -05/07/14 Surficial PVC 4 200420.50 2304536.30 42.58 39.90 UNK 5 NA NA LA-PZ-1 -02/10/15 Surficial PVC 4 202897.98 2305358.04 22.95 19.80 UNK 10 NA NA LA-PZ-2 -02/11/15 Surficial PVC 4 201637.48 2306475.92 29.28 26.00 UNK 10 NA NA LA-PZ-3 -02/13/15 Surficial PVC 4 200553.67 2306698.53 25.75 22.70 UNK 10 NA NA LA-PZ-4 -02/16/15 Surficial PVC 4 199963.74 2306964.30 21.48 18.60 UNK 10 NA NA LA-PZ-5 -02/12/15 Surficial PVC 4 198148.10 2307616.62 25.04 22.00 UNK 10 NA NA Prepared by: WJW Checked by: ARL Notes: BGS = Below ground surface NA = Not available TOC = Top of casing MSL = Mean sea level UNK = Data not known - = none 1 = Well depths initially measured by SynTerra June 15, 2015 and updated as new wells are installed. 3 = Values measured during well installation Red text indicates an abandoned well P:\Duke Energy Progress.1026\108. Sutton Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 1-1 Well Construction Data Page 3 of 3 TABLE 1-2 UPPER SURFICIAL GROUNDWATER EXCEEDANCES L.V. SUTTON ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, WILMINGTON, NC P:\Duke Energy Progress.1026\108. Sutton Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 1-2 Upper Surficial Groundwater Exceedances.xlsx Page 1 of 4 pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Barium Boron Chromium (VI) Chromium (VI) Speciation Cobalt Iron Lead Manganese Nitrate (as N)Selenium Sodium Strontium Thallium Total Dissolved Solids Vanadium S.U.ft Deg C umhos /cm mg/L mV mV NTUs mg/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L mg-N/L ug/L mg/L ug/L ug/L mg/L ug/L 6.5-8.5 NE NE NE NE NE NE NE NE 1*10 700 700 0.07^0.07^1*300 15 50 10 20 NE NE 0.2*500 0.3* Sample ID Sample Collection Date MW-4 12/04/2015 5.3 6.56 19 175 0.3 87 292 2.43 1 <1 <1 51 <50 <0.03 NA <1 416 <1 52 0.11 <1 5.9 57 <0.2 100 2.61 MW-4 01/13/2016 5.4 6.86 19 163 0.86 120 325 2.73 0 <1 <1 66 <50 <0.03 NA <1 154 <1 33 2.8 <1 5.44 55 <0.2 100 1.96 MW-4A 12/04/2015 4.7 6.04 19 432 0.4 103 308 1.4 0 <1 <1 126 65 0.033 NA <1 111 <1 112 5.2 <1 7.51 85 0.42 230 2.63 MW-4A DUP 12/04/2015 4.7 6.04 19 432 0.4 103 308 1.4 0 <1 <1 127 66 <0.03 M1 NA <1 72 <1 113 4.8 <1 7.49 86 0.409 250 2.31 MW-4A 01/13/2016 4.7 6.36 18 220 0.81 156 361 0.47 0 <1 <1 68 67 <0.03 NA <1 53 <1 86 6.2 <1 3.16 63 <0.2 140 1.93 MW-5A 12/04/2015 4.6 2.75 17 27 1.7 305 510 1.6 NM <1 <1 15 <50 <0.03 NA <1 118 <1 17 0.107 <1 1.09 5 <0.2 <25 <0.3 MW-5A 01/13/2016 4.7 2.64 18 30 1.54 343 548 6.86 0 <1 <1 17 <50 <0.03 NA <1 375 <1 19 0.018 <1 1.29 <5 <0.2 <25 <0.3 MW-5A 03/08/2016 4.7 2.65 17 31 1.84 238 443 2.2 0 <1 <1 17 <50 <0.03 NA <1 118 <1 18 0.016 <1 1.36 <5 <0.2 <25 <0.3 MW-5A 06/16/2016 4.6 3.45 22 28 0.24 287 492 5 0.5 <1 <1 15 <50 <0.03 NA 1.11 789 <1 26 <0.01 <1 1.09 <5 <0.2 <25 0.473 B2 MW-5B 05/23/2014 3.9 NM 20 32 4.4 163 NM 7.51 NM <5.3 <6.8 44.5 <100 NA NA NA 700 <4.7 32 <25 <8.4 0.00202 <10 <5.4 <30 <2 MW-5B 12/04/2015 5.0 22.19 16 21 6.2 261 466 1.7 ND <1 <1 13 <50 <0.03 NA <1 181 <1 6 0.093 <1 0.984 <5 <0.2 <25 <0.3 MW-5B 01/13/2016 4.7 3.67 18 31 5.12 5 472 0.81 0 <1 <1 48 <50 <0.03 NA 3.97 112 <1 29 0.098 <1 1.41 7 <0.2 <25 <0.3 MW-5B 03/08/2016 4.6 3.68 19 33 6.75 241 446 0.8 0 <1 <1 47 <50 <0.03 NA 3.64 22 <1 32 0.077 <1 1.38 8 <0.2 <25 <0.3 MW-5B 06/16/2016 4.6 4.49 21 32 6.25 338 543 0.85 0 <1 <1 43 <50 <0.03 NA 3.42 30 <1 28 0.069 <1 1.48 7 <0.2 <25 0.302 B2 MW-37 10/03/2009 NM NM NM NM NM NM NM NM NM NA NA NA NA NA NA NA 196 NA NA NA NA NA NA NA NA NA MW-37B 03/27/2015 4.5 15.56 18 36 5.63 149 354 3.68 0.5 <1 <1 10 <50 NA NA <1 687 <1 38 0.102 <1 3.08 6 <0.2 <25 <0.3 MW-37B 06/02/2015 4.3 15.70 21 32 7.31 338 543 2.09 0 <1 <1 8 <50 NA NA <1 31 <1 7 0.096 <1 2.31 <5 <0.2 <25 <0.3 MW-37B 09/23/2015 5.0 15.89 23 53 7.3 181 386 2.26 NM <1 <1 8 <50 NA NA <1 79 <1 <5 NA <1 1.82 <5 0.35 NA <0.3 MW-37B 10/12/2015 5.1 12.44 22 26 8.91 243 448 0.42 NM <1 <1 7 <50 NA NA <1 12 <1 <5 0.16 <1 1.3 <5 <0.2 <25 <0.3 MW-37B 12/03/2015 4.9 14.68 19 32 7.8 155 360 4.05 0.5 <1 <1 8 <50 <0.03 NA <1 92 <1 <5 0.088 <1 1.8 <5 <0.2 <25 <0.3 MW-37B 01/13/2016 4.9 14.91 18 29 4.55 143 348 1.18 0.5 <1 <1 8 <50 <0.03 NA <1 67 <1 <5 0.104 <1 2.03 <5 <0.2 <25 <0.3 MW-37B 03/08/2016 4.8 14.89 19 30 7.78 186 391 0.9 0 <1 <1 7 <50 <0.03 NA <1 16 <1 <5 0.103 <1 2 <5 <0.2 <25 <0.3 MW-37B 06/14/2016 4.7 15.99 22 27 7.3 328 533 0.77 NM <1 <1 7 <50 <0.03 NA <1 10 <1 <5 0.108 <1 1.76 <5 <0.2 <25 <0.3 421-Well 3 06/02/2015 5.7 NM 20 138 2.92 162 367 2.36 NM <1 <1 44 73 NA NA <1 37 <1 84 1.5 <1 5.63 NA <0.2 66 NA 421-Well 3 10/13/2015 5.4 NM 20 123 3.4 215 420 0.59 NM <1 <1 45 72 NA NA <1 66 <1 81 2.2 <1 5.52 49 <0.2 76 0.366 421-Well 4 06/02/2015 5.3 NM 20 88 7.44 184 389 0.74 NM <1 <1 44 54 NA NA <1 71 <1 57 0.72 <1 5 NA <0.2 45 NA 421-Well 4 10/13/2015 5.3 NM 20 83 4.4 219 424 0.54 NM <1 <1 43 53 NA NA <1 63 <1 56 0.74 <1 4.85 40 <0.2 40 <0.3 AW-1B 02/06/2015 6.5 8.60 16 107 0.77 -92 113 249 NM <1 2.79 140 53 NA NA 10.4 10900 16.1 145 0.029 <1 31.2 120 <0.2 910 4.85 AW-1B 06/02/2015 5.8 8.70 21 42 0.56 101 306 9.87 <0.5 <1 <1 <5 <50 NA NA 1.44 2680 <1 105 0.044 <1 4.91 8 <0.2 44 <0.3 AW-2B 02/06/2015 6.5 18.64 15 269 2.7 -251 -46 5.69 4 <1 <1 50 <50 NA NA 2.44 4600 <1 814 <0.04 1.63 15.5 129 <0.2 140 0.32 AW-2B 06/03/2015 6.1 19.25 20 24 0.6 176 381 4.03 1 <1 <1 16 <50 NA <0.007 <1 1320 <1 204 0.014 <1 0.867 10 <0.2 <25 <0.3 AW-3B 02/05/2015 6.6 9.23 17 89 0.3 -430 -225 27.1 4 <1 <1 9 <50 NA NA <1 6610 <1 161 0.011 <1 3.62 20 <0.2 46 <0.3 AW-3B 06/11/2015 5.8 9.57 20 49 0.3 -91 114 0.6 5 <1 <1 10 <50 NA NA <1 6290 <1 13 <0.01 <1 1.29 <5 <0.2 29 0.427 AW-4B 02/05/2015 6.5 10.27 17 72 1.55 -292 -87 14.7 1.5 <1 <1 21 <50 NA NA 1.39 2600 <1 232 0.016 <1 2.86 23 <0.2 43 <0.3 AW-4B 06/05/2015 6.2 10.58 19 43 4.55 46 251 0.45 <0.5 <1 <1 12 <50 NA NA <1 41 <1 22 0.062 <1 1.4 13 <0.2 <25 <0.3 AW-4B 12/04/2015 5.8 8.35 20 35 6.11 112 317 0.44 0 <1 <1 13 <50 <0.03 NA <1 43 <1 <5 0.045 <1 1.28 10 <0.2 <25 <0.3 AW-4B 01/13/2016 5.8 8.98 14 32 5.99 192 397 0.6 0 <1 <1 14 <50 <0.03 NA <1 34 <1 7 0.039 <1 1.43 12 <0.2 35 <0.3 AW-5B 03/24/2015 7.2 16.39 19 185 0.09 -193 12 8.9 2.5 <1 <1 66 <50 NA NA <1 6790 <1 391 <0.01 <1 14.3 85 <0.2 130 <0.3 AW-5B 06/03/2015 8.5 16.70 20 86 0.36 -90 115 4.49 0 <1 <1 25 <50 NA 0.013 <1 281 <1 26 0.011 <1 6.53 26 <0.2 50 <0.3 AW-5B 12/03/2015 5.4 13.93 20 86 4.16 197 402 0.22 0.5 <1 <1 70 <50 <0.03 NA 1.93 907 <1 165 0.325 M2 <1 1.33 32 <0.2 57 <0.3 AW-5B 01/13/2016 4.7 14.60 17 48 5.1 288 493 1.4 1 <1 <1 40 <50 <0.03 NA 1.71 374 <1 107 0.024 <1 1.62 6 <0.2 35 <0.3 AW-6B 02/05/2015 5.6 8.49 18 60 4.56 53 258 5.96 0.5 <1 <1 31 <50 NA NA <1 597 <1 90 0.015 <1 3.77 16 <0.2 27 <0.3 AW-6B 06/03/2015 4.8 9.00 20 38 6.55 155 360 4.85 <0.5 <1 <1 32 <50 NA 0.024 <1 71 <1 17 0.05 <1 1.54 25 <0.2 <25 <0.3 AW-6B 12/03/2015 6.0 6.29 19 52 5.08 359 564 5.14 0 <1 <1 27 <50 0.058 NA <1 81 <1 13 0.078 <1 1.24 46 <0.2 42 <0.3 AW-6B 01/13/2016 6.5 6.95 13 61 5.67 85 290 0.85 0 <1 <1 30 <50 0.11 NA <1 <10 <1 25 0.066 <1 1.51 47 <0.2 33 0.53 AW-8B 03/25/2015 5.3 6.57 19 45 0.31 -5 201 3.39 3 <1 <1 34 <50 NA NA 2.36 5380 <1 35 <0.01 <1 1.08 6 <0.2 <50 0.437 AW-8B 06/02/2015 5.1 6.77 23 43 0.32 95 300 4.49 3.5 <1 <1 25 <50 NA NA 2.53 4450 <1 29 0.022 <1 1.15 <5 <0.2 26 0.335 Analytical Parameter Field Parameters Background Analytical Results Surficial Upper 15A NCAC 02L Standard Reporting Units TABLE 1-2 UPPER SURFICIAL GROUNDWATER EXCEEDANCES L.V. SUTTON ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, WILMINGTON, NC P:\Duke Energy Progress.1026\108. Sutton Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 1-2 Upper Surficial Groundwater Exceedances.xlsx Page 2 of 4 pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Barium Boron Chromium (VI) Chromium (VI) Speciation Cobalt Iron Lead Manganese Nitrate (as N)Selenium Sodium Strontium Thallium Total Dissolved Solids Vanadium S.U.ft Deg C umhos /cm mg/L mV mV NTUs mg/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L mg-N/L ug/L mg/L ug/L ug/L mg/L ug/L 6.5-8.5 NE NE NE NE NE NE NE NE 1*10 700 700 0.07^0.07^1*300 15 50 10 20 NE NE 0.2*500 0.3* Sample ID Sample Collection Date Analytical Parameter Field Parameters Analytical Results 15A NCAC 02L Standard Reporting Units AW-8B 12/03/2015 5.0 5.97 20 35 0.2 57 262 0.46 0.5 <1 <1 18 <50 <0.03 NA 1.61 2640 <1 24 <0.01 <1 1.11 6 <0.2 <25 <0.3 AW-8B 01/13/2016 4.2 5.90 18 60 0.49 351 556 6.36 3 <1 <1 21 <50 <0.03 NA 2.25 3060 <1 21 <0.01 <1 1.1 <5 <0.2 <25 <0.3 AW-8B DUP 01/13/2016 4.2 5.90 18 60 0.49 351 556 6.36 3 <1 <1 20 <50 <0.03 NA 2.31 3020 <1 21 0.026 <1 1.11 <5 <0.2 27 <0.3 AW-9B 02/06/2015 5.7 8.43 16 49 4.13 -12 193 9.84 NM <1 <1 24 <50 NA NA <1 2520 <1 82 0.325 <1 2.39 19 <0.2 <25 0.56 AW-9B 06/04/2015 4.6 8.35 21 44 6.34 196 401 4.08 <0.5 <1 <1 18 <50 NA 0.038 <1 225 <1 18 0.158 <1 2.07 11 <0.2 <25 <0.3 AW-9B 12/03/2015 4.6 7.54 20 48 5.2 241 446 2.48 0 <1 <1 14 <50 NA NA <1 108 <1 7 0.084 <1 1.86 11 <0.2 <25 <0.3 AW-9B 01/13/2016 4.6 7.91 19 40 3.37 153 358 9.93 0 <1 <1 12 <50 <0.03 NA <1 250 <1 8 0.111 <1 1.77 11 <0.2 <25 0.479 GWPZ-1A 09/23/2015 6.7 7.32 23 62 5.2 158 363 5.77 NM 2.93 <1 8 57 NA NA <1 193 <1 <5 NA 2.54 1.23 52 <0.2 NA 1.52 GWPZ-1B 09/23/2015 6.7 7.17 23 370 2.68 53 258 5.01 NM 6.19 <1 47 222 NA NA <1 38 <1 <5 NA 16.2 10.3 244 0.695 NA 8.32 MW-2B 05/23/2014 5.9 NM 20 52 4.14 159 NM 2.61 NM <5.3 <6.8 <10 <100 NA NA NA <400 <4.7 <10 <5 <8.4 0.00258 52.6 <5.4 <30 <2 MW-3B 05/27/2014 5.6 NM 19 91 0.95 161 NM 0.71 NM <5.3 <6.8 <10 446 NA NA NA <43 <4.7 18.5 0.77 <8.4 0.00306 346 <5.4 61 <2 MW-6B 05/21/2014 6.7 NM 22 629 0.39 80 NM 2.53 NM <5.3 <6.8 34.9 1130 NA NA NA <400 <30 68.2 <.25 <8.4 0.0523 1930 <5.4 374 <2 MW-7A 06/02/2015 4.1 8.10 22 28 3.08 322 527 4.98 0 <1 <1 6 <50 NA NA <1 93 <1 <5 0.71 <1 0.452 <5 <0.2 <25 <0.3 MW-7B 06/02/2015 4.3 7.51 20 39 4.96 323 528 1.86 0 <1 <1 22 <50 NA NA <1 15 <1 9 0.53 <1 1.06 15 <0.2 <25 <0.3 MW-15 06/10/2015 6.8 3.22 20 408 0.1 -79 126 2.86 3 <1 23.6 30 54 NA NA <1 3690 <1 76 <0.01 <1 6.24 365 <0.2 250 3.88 MW-16 06/10/2015 5.9 6.81 21 151 2.28 39 244 1.83 <0.5 <1 1.49 20 90 NA 0.015 <1 113 <1 9 <0.01 <1 16.6 80 <0.2 84 0.316 MW-16 12/04/2015 6.4 7.31 20 111 0.6 -99 107 21.2 ND <1 3.31 18 109 <0.03 NA <1 874 <1 10 <0.01 <1 12.4 65 <0.2 75 2.36 MW-16 01/14/2016 6.3 7.20 20 141 0.65 -26 179 10.4 0.5 <1 2.43 21 114 0.032 NA <1 760 <1 13 <0.01 <1 15.2 71 <0.2 92 1.87 MW-17 03/22/1993 NM NM NM NM NM NM NM NM NM NA NA NA NA NA NA NA 620 NA NA NA NA NA NA NA NA NA MW-17 03/02/2006 6.1 19.03 NM NM NM NM NM NM NM NA 41 NA NA NA NA NA 2450 NA NA NA <5 NA NA NA 398 NA MW-17 12/12/2006 6.4 20.08 20 570 NM NM NM NM NM 0.33 18.8 162 2180 NA NA NA 2240 0.2 455 NA 0.68 NA NA 0.21 377 NA MW-17 03/06/2007 6.3 19.96 20 NM NM NM NM NM NM 4 22 161 2900 NA NA NA 2840 <3 441 NA <5 NA NA <1 387 NA MW-17 11/07/2007 6.2 20.42 NM 610 NM NM NM NM NM <2.5 25 143 2720 NA NA NA 1220 <5 353 NA <5 NA NA <1 367 NA MW-17 03/11/2008 6.2 20.44 20 622 NM NM NM NM NM <2.5 20 119 2440 NA NA NA 886 <5 276 NA <5 NA NA <1 396 NA MW-17 11/06/2008 6.5 21.16 20 630 NM NM NM NM NM <2 29 87 3060 NA NA NA 982 <5 162 NA <5 NA NA <1 393 NA MW-17 03/10/2009 6.5 20.31 20 614 NM NM NM NM NM <40 27 120 2000 NA NA NA 1110 <10 274 NA <20 NA NA <10 373 NA MW-17 10/06/2009 6.6 19.59 20 796 NM NM NM NM NM <5 34 140 2110 NA NA NA 1200 <5 259 NA <5 NA NA <5 471 NA MW-17 03/10/2010 6.6 19.50 20 645 NM NM NM NM NM <1 29 112 2140 NA NA NA 1560 <1 262 NA 4 NA NA <1 412 NA MW-17 11/11/2010 6.6 19.23 20 581 NM NM NM NM NM <0.5 35.2 102 2140 NA NA NA 1570 <5 284 NA <10 NA NA <0.1 342 NA MW-17 03/02/2011 6.2 20.12 18 585 NM NM NM 2.18 NM <0.5 7.1 126 2220 NA NA NA 386 <5 386 NA <10 NA NA 0.11 368 NA MW-17 10/04/2011 6.3 20.01 22 594 NM NM NM 2.44 NM <0.5 7.1 135 2090 NA NA NA 636 <5 305 NA <10 NA NA 0.14 360 NA MW-17 03/06/2012 6.3 20.82 19 686 NM NM NM 1.74 NM <0.5 17 153 2230 NA NA NA 2040 <5 401 NA <10 NA NA <0.1 377 NA MW-17 06/05/2012 6.3 20.53 20 983 NM NM NM 3.47 NM <0.5 16.1 162 2120 NA NA NA 1890 <5 382 NA <10 NA NA 0.38 574 NA MW-20 06/10/2015 7.0 8.34 19 385 0.1 -51 154 1.3 0.5 <1 1.12 55 52 NA NA <1 747 <1 107 <0.01 <1 20.5 350 <0.2 220 39.6 MW-22 02/11/1994 NM NM NM NM NM NM NM NM NM NA NA NA NA NA NA NA 510 NA NA NA NA NA NA NA NA NA MW-22B 10/03/2011 7.3 8.52 22 113 NM 99 304 0.42 NM NA <5 NA <50 NA NA NA <50 NA 88.7 NA <10 NA NA NA 54 NA MW-22B 01/17/2012 5.8 10.48 20 93 1.78 161 366 1.1 NM NA <5 NA 175 NA NA NA 460 NA 85.5 NA <10 NA NA NA 35 NA MW-22B 10/03/2012 6.2 9.93 24 82 2.57 116 321 1.88 NM <0.5 <5 44.1 180 NA NA NA <50 <5 116 NA <10 NA NA <0.1 40 NA MW-22B 06/01/2015 5.7 8.77 20 31 5.68 85 290 0.28 NM <1 <1 9 <50 NA NA <1 <10 <1 <5 0.2 <1 1.42 NA <0.2 <25 NA MW-22B 10/13/2015 5.8 4.72 23 26 6.3 203 408 0.6 NM <1 <1 9 <50 NA NA <1 <10 <1 6 0.05 <1 1.65 17 <0.2 350 <0.3 MW-22B 03/08/2016 5.2 7.45 20 27 7.17 258 463 0.1 0 <1 <1 8 <50 NA NA <1 <10 <1 7 0.05 <1 1.72 14 <0.2 <25 <0.3 MW-22B 06/15/2016 5.3 9.22 23 23 6.09 277 482 0.44 NM <1 <1 7 <50 NA NA <1 <10 <1 7 0.03 <1 1.36 11 <0.2 <25 <0.3 MW-23 08/03/1995 NM NM NM NM NM NM NM NM NM NA NA NA NA NA NA NA 13000 NA NA NA NA NA NA NA NA NA MW-23B 10/03/2011 6.9 5.00 22 247 NM 55 260 0.4 NM NA <5 NA 394 NA NA NA <50 NA 277 NA <10 NA NA NA 1990 NA MW-23B 01/16/2012 6.9 7.37 17 216 5.86 24 229 1.6 NM NA <5 NA 468 NA NA NA 168 NA 349 NA <10 NA NA NA 148 NA MW-23B 10/02/2012 6.2 6.44 23 339 0.59 40 245 2.07 NM <0.5 <5 35.2 1330 NA NA NA <50 <5 348 NA <10 NA NA <0.1 186 NA MW-23B DUP 10/02/2012 6.2 6.44 23 339 0.59 40 245 2.07 NM <0.5 <5 31.3 1370 NA NA NA <50 <5 354 NA <10 NA NA <0.1 192 NA MW-23B 03/12/2013 6.6 6.65 18 297 4.57 120 325 1.1 NM <1 <1 35 1100 NA NA NA 16 <1 157 NA 2.36 NA NA <0.2 210 NA MW-23B 06/12/2013 6.2 6.50 23 498 0.69 81 286 0.63 NM <1 <1 49 1830 NA NA NA 15 <1 133 NA 1.9 NA NA <0.2 330 NA TABLE 1-2 UPPER SURFICIAL GROUNDWATER EXCEEDANCES L.V. SUTTON ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, WILMINGTON, NC P:\Duke Energy Progress.1026\108. Sutton Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 1-2 Upper Surficial Groundwater Exceedances.xlsx Page 3 of 4 pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Barium Boron Chromium (VI) Chromium (VI) Speciation Cobalt Iron Lead Manganese Nitrate (as N)Selenium Sodium Strontium Thallium Total Dissolved Solids Vanadium S.U.ft Deg C umhos /cm mg/L mV mV NTUs mg/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L mg-N/L ug/L mg/L ug/L ug/L mg/L ug/L 6.5-8.5 NE NE NE NE NE NE NE NE 1*10 700 700 0.07^0.07^1*300 15 50 10 20 NE NE 0.2*500 0.3* Sample ID Sample Collection Date Analytical Parameter Field Parameters Analytical Results 15A NCAC 02L Standard Reporting Units MW-23B 10/02/2013 6.1 5.23 23 332 1.09 168 373 0.63 NM <1 <1 36 1140 NA NA NA <10 <1 59 NA 3.13 NA NA <0.2 220 NA MW-23B 03/04/2014 6.9 7.10 15 232 4.73 186 391 5.69 NM <1 <1 32 1020 NA NA NA 133 <1 49 NA 5.84 NA NA <0.2 170 NA MW-23B 06/02/2014 6.5 6.40 21 237 NM 127 332 1.4 NM <1 <1 28 758 NA NA NA 13 <1 13 NA 7.98 NA NA <0.2 140 NA MW-23B 06/03/2015 6.3 4.71 19 90 2.21 34 239 0.88 <0.5 NA NA NA NA NA 0.051 NA NA NA NA 0.123 NA NA 365 NA NA <0.3 MW-23B 11/18/2015 6.1 2.50 21 92 3.1 265 470 1.03 NM <1 <1 35 56 NA NA <1 <10 <1 6 0.51 2.08 1.28 335 <0.2 59 <0.3 MW-23B 12/04/2015 6.4 2.97 18 86 4.45 38 243 0.06 0 NA NA NA NA 0.12 NA NA NA NA NA NA NA NA NA NA NA NA MW-23B 03/08/2016 6.4 3.62 18 95 6.02 144 349 0.3 0 <1 <1 31 56 NA NA <1 <10 <1 6 0.71 2.31 1.53 333 <0.2 47 <0.3 MW-23B 06/15/2016 6.3 5.65 22 88 4.7 186 391 1.26 NM <1 <1 25 <50 NA NA <1 16 <1 8 0.35 1.97 1.29 285 <0.2 34 0.457 MW-23B DUP 06/15/2016 6.3 5.65 22 88 4.7 186 391 1.26 NM <1 <1 24 <50 NA NA <1 20 <1 8 0.35 1.91 1.28 279 <0.2 38 0.447 MW-24B 10/04/2011 6.8 3.83 20 561 12.7 -10 195 0.2 NM NA <5 NA 1350 NA NA NA <50 NA 377 NA 43.3 NA NA NA 328 NA MW-24B 01/17/2012 6.3 5.90 19 506 0.55 124 329 1.1 NM NA <5 NA 1500 NA NA NA <50 NA 725 NA 21.6 NA NA NA 331 NA MW-24B 10/03/2012 6.2 5.01 24 727 0.72 39 244 5.57 NM 1.1 <5 43.4 1420 NA NA NA 117 <5 805 NA <10 NA NA 0.42 391 NA MW-24B 03/13/2013 6.5 5.49 17 610 3.67 101 306 0.59 NM 1.07 <1 54 1270 NA NA NA 11 <1 396 NA <1 NA NA 0.586 360 NA MW-24B 06/12/2013 6.3 5.41 22 638 0.31 97 302 2.58 NM <1 <1 42 1190 NA NA NA 55 <1 388 NA <1 NA NA 0.468 380 NA MW-24B 10/02/2013 6.3 3.93 22 668 0.28 126 331 1.43 NM <1 <1 40 1130 NA NA NA 38 <1 464 NA <1 NA NA 0.57 380 NA MW-24B 03/05/2014 6.8 5.94 14 680 4.02 167 372 1.01 NM <1 <1 41 1180 NA NA NA 11 <1 55 NA <1 NA NA 0.23 370 NA MW-24B DUP 03/05/2014 6.8 5.94 14 680 4.02 167 372 1.01 NM <1 <1 39 1150 NA NA NA <10 <1 82 NA <1 NA NA 0.25 360 NA MW-24B 06/03/2014 6.6 5.30 22 604 NM 150 355 0.92 NM <1 <1 41 1140 NA NA NA 12 <1 19 NA <1 NA NA <0.2 350 NA MW-24B 10/01/2014 6.1 3.25 23 542 0.35 234 439 1.44 NM <1 <1 37 1050 NA NA NA 23 <1 183 NA <1 NA NA 0.445 320 NA MW-24B 06/02/2015 6.6 4.40 19 265 0.97 26 231 0.67 <0.5 <1 3.26 38 1030 NA 0.098 17.9 3560 <1 1040 0.015 <1 79.6 568 <0.2 140 0.555 MW-24B 06/15/2016 6.0 3.87 22 65 0.14 64 269 2.75 NM <1 <1 44 98 NA NA 2.08 942 <1 157 <0.023 <1 2.36 107 <0.2 <25 0.444 MW-27B 10/03/2011 6.5 4.30 20 579 NM 95 300 0.8 NM NA <5 NA 404 NA NA NA <50 NA 391 NA 22.7 NA NA NA 309 NA MW-27B 01/18/2012 6.2 4.86 17 424 2.84 138 343 1.4 NM NA <5 NA 412 NA NA NA <50 NA 406 NA 25.3 NA NA NA 292 NA MW-27B 10/02/2012 5.6 4.60 22 459 1.07 112 317 2.32 NM <0.5 <5 49.3 466 NA NA NA <50 <5 229 NA 27.3 NA NA <0.1 240 NA MW-27B 03/13/2013 5.5 4.88 16 444 2.79 245 450 0.67 NM <1 <1 52 395 NA NA NA 10 <1 219 NA 37.1 NA NA <0.2 250 NA MW-27B 06/13/2013 5.0 4.45 22 432 0.5 185 390 2.74 NM <1 <1 49 403 NA NA NA 38 <1 168 NA 34.6 NA NA <0.2 250 NA MW-27B 10/02/2013 4.5 4.11 21 427 1.16 355 560 1.48 NM <1 <1 53 401 NA NA NA 21 <1 261 NA 48.2 NA NA <0.2 240 NA MW-27B 03/05/2014 5.2 4.95 13 455 1.97 228 433 1.17 NM <1 <1 48 414 NA NA NA 14 <1 237 NA 61.7 NA NA <0.2 260 NA MW-27B 06/02/2014 4.7 4.82 20 419 NM 320 525 0.39 NM <1 <1 47 403 NA NA NA 23 <1 153 NA 56.7 NA NA <0.2 250 NA MW-27B DUP 06/02/2014 4.7 4.82 20 419 NM 320 525 0.39 NM <1 <1 47 393 NA NA NA <10 <1 154 NA 59.6 NA NA <0.2 67 NA MW-27B 10/01/2014 4.3 3.88 22 382 1.97 231 436 0.81 NM <1 <1 44 388 NA NA NA <10 <1 150 NA 59.9 NA NA <0.2 230 NA MW-27B 03/10/2015 4.5 4.01 16 231 4.16 321 526 1.21 NM <1 <1 38 241 NA NA NA <10 <1 78 NA 36.2 NA NA <0.2 120 NA MW-27B 06/02/2015 4.7 4.39 21 196 4.81 151 356 2.67 <0.5 NA NA NA NA NA NA NA NA NA NA 1.3 NA NA 124 NA NA <0.3 MW-27B 10/13/2015 4.8 2.95 21 176 3.9 270 475 0.33 NM <1 <1 51 162 NA NA 1.89 <10 <1 58 1.1 21.2 11.8 129 <0.2 84 <0.3 MW-27B 03/08/2016 4.9 3.57 17 82 5.4 254 459 1.1 0 <1 <1 62 61 NA NA <1 12 <1 25 0.33 8.48 4.83 68 <0.2 37 <0.3 MW-27B 06/15/2016 4.9 4.35 22 86 2.99 323 528 0.61 NM <1 <1 62 71 NA NA 1.09 <10 <1 30 0.22 10.1 4.52 80 <0.2 41 <0.3 MW-28B 10/03/2011 7.6 22.50 22 254 NM 88 293 0.62 NM NA <5 NA <50 NA NA NA <50 NA 73.2 NA <10 NA NA NA 236 NA MW-28B 01/17/2012 7.2 24.03 20 175 2.95 104 309 1.3 NM NA <5 NA <50 NA NA NA <50 NA 89.4 NA <10 NA NA NA 112 NA MW-28B 06/01/2015 6.3 22.21 25 69 4.88 33 238 0.61 NM <1 <1 28 <50 NA NA <1 10 <1 10 0.27 <1 1.91 NA <0.2 40 NA MW-28B DUP 06/01/2015 6.3 22.21 25 69 4.88 33 238 0.61 NM <1 <1 29 <50 NA NA <1 10 <1 10 0.27 <1 1.97 NA <0.2 40 NA MW-28B 10/12/2015 6.7 19.33 22 72 5.9 116 321 0.66 NM <1 <1 29 <50 NA NA <1 <10 <1 11 0.24 <1 2.17 41 <0.2 25 <0.3 MW-28B 03/08/2016 6.2 21.38 20 53 6.49 151 356 0.7 0 <1 <1 27 <50 NA NA <1 <10 <1 11 0.22 <1 1.77 40 <0.2 28 <0.3 MW-28B 06/14/2016 6.3 22.65 25 52 5.95 178 383 2.15 NM <1 <1 31 <50 NA NA <1 49 <1 73 0.22 <1 1.63 41 <0.2 25 0.416 MW-31B 05/27/2014 5.7 NM 21 109 0.44 74 NM 9.95 NM <5.3 <6.8 33.6 268 NA NA NA 1390 <4.7 46.1 <25 <8.4 0.00884 243 <5.4 81.50001 <2 MW-31B 04/29/2015 5.6 6.57 18 71 0.27 125 330 9.17 0.5 <1 <1 42 71 NA NA <1 902 <1 49 0.014 <1 2.98 139 <0.2 48 0.742 MW-31B 06/05/2015 6.0 5.85 19 61 0.22 42 247 6.94 0.5 <1 <1 35 <50 NA NA <1 1180 <1 73 0.01 <1 2.21 115 <0.2 40 0.378 MW-31B 12/04/2015 5.9 3.28 18 61 0.4 51 256 1.6 2.5 <1 <1 11 <50 <0.03 NA <1 4420 <1 36 <0.01 <1 2.97 70 <0.2 28 <0.3 MW-31B 01/13/2016 6.1 3.79 17 77 0.59 28 233 1.26 0 <1 <1 13 55 <0.03 NA <1 5020 <1 34 0.021 <1 3.37 79 <0.2 40 <0.3 MW-32 09/03/2004 NM NM NM NM NM NM NM NM NM NA NA NA NA NA NA NA 671 NA NA NA NA NA NA NA NA NA TABLE 1-2 UPPER SURFICIAL GROUNDWATER EXCEEDANCES L.V. SUTTON ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, WILMINGTON, NC P:\Duke Energy Progress.1026\108. Sutton Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 1-2 Upper Surficial Groundwater Exceedances.xlsx Page 4 of 4 pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Barium Boron Chromium (VI) Chromium (VI) Speciation Cobalt Iron Lead Manganese Nitrate (as N)Selenium Sodium Strontium Thallium Total Dissolved Solids Vanadium S.U.ft Deg C umhos /cm mg/L mV mV NTUs mg/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L mg-N/L ug/L mg/L ug/L ug/L mg/L ug/L 6.5-8.5 NE NE NE NE NE NE NE NE 1*10 700 700 0.07^0.07^1*300 15 50 10 20 NE NE 0.2*500 0.3* Sample ID Sample Collection Date Analytical Parameter Field Parameters Analytical Results 15A NCAC 02L Standard Reporting Units MW-33 07/03/2005 NM NM NM NM NM NM NM NM NM NA NA NA NA NA NA NA 450 NA NA NA NA NA NA NA NA NA MW-34B 05/27/2014 5.3 NM 21 324 0.34 116 NM 9.2 NM <5.3 <6.8 17.3 223 NA NA NA <400 <4.7 <10 1.1 <40 0.0281 230 <5.4 164 <2 MW-35B 05/28/2014 5.5 NM 20 112 4.16 88 NM 5.78 NM <5.3 <6.8 42 <100 NA NA NA <400 <4.7 24.7 <25 <8.4 0.0175 15.2 <5.4 88.50001 <2 MW-36B 05/21/2014 6.5 NM 20 513 81.2 1 NM 5.86 NM <5.3 <6.8 153 528 NA NA NA <400 <4.7 NA 0.63 <40 0.0463 546 <5.4 316 <10 MW-36B 09/23/2015 6.6 9.30 20 175 3.2 171 376 7.16 NM 5.25 <1 42 211 NA NA <1 255 <1 <5 NA 13.5 7.11 250 0.462 NA 2.03 MW-36B 12/04/2015 6.7 6.01 19 126 4.12 106 311 9.47 0 5.05 <1 29 118 <0.03 NA <1 116 <1 <5 1.4 6.94 3.69 173 0.256 73 1.59 MW-36B 01/13/2016 6.6 7.66 17 114 3.35 195 400 2.1 0 5.1 <1 25 99 <0.03 NA <1 35 <1 <5 1.4 4.9 4.29 159 0.201 69 1.12 MW-38B 06/16/2016 4.9 5.91 22 44 4.87 161 366 0.74 0 <1 <1 32 <50 <0.03 NA <1 251 <1 36 0.223 <1 1.54 7 <0.2 25 0.378 B2 MW-39B 06/22/2016 5.9 12.71 21 66 0.2 -69 136 7 NM <1 <1 7 <50 <0.3 NA <1 5090 <1 72 0.04 <1 2.48 22 <0.2 54 2.04 MW-40B 06/17/2016 5.9 4.46 21 135 0.14 -151 54 3.56 3.5 <1 <1 34 99 <0.6 D3 NA 1.96 9280 <1 70 0.015 <1 6.01 93 0.252 72 0.314 PZ-25 05/27/2014 4.6 NM 19 22 8.6 131 NM 6.44 NM <5.3 <6.8 11.5 <100 NA NA NA <400 <4.7 11.2 <25 <8.4 <0.002 <10 <5.4 <30 <2 PZ-INT 05/20/2014 7.4 NM 20 997 0.07 -267 NM 1000 NM <5.3 275 925 4260 NA NA NA 9570 <30 184 <25 <40 0.0411 7240 <5.4 631 129 SMW-1B 04/27/2015 5.0 4.00 19 159 2.52 187 392 9.7 0.5 <1 <1 82 138 NA NA <1 591 <1 12 0.385 <1 8.56 40 <0.2 90 <0.3 SMW-1B 06/05/2015 4.6 2.95 20 106 4.52 188 393 4.9 <0.5 <1 <1 78 100 NA NA <1 30 <1 14 0.441 <1 4.41 35 <0.2 57 <0.3 SMW-1B 12/03/2015 5.8 0.60 19 175 4.2 232 437 2.2 ND <1 <1 33 141 <0.03 NA <1 41 <1 <5 0.962 <1 8.89 74 <0.2 95 <0.3 SMW-1B 01/13/2016 5.6 1.30 17 234 4.6 195 400 1.9 0 <1 <1 39 175 <0.03 NA <1 69 <1 6 0.79 1.01 12.1 75 <0.2 120 <0.3 SMW-2B 03/26/2015 6.6 10.25 20 240 2.25 -105 100 7.99 2 <1 <1 30 <50 NA NA 1.77 11400 <1 235 0.241 <1 12.2 61 <0.2 130 2.35 SMW-2B 06/04/2015 6.4 9.60 22 281 0.43 26 231 3.9 NM <1 <1 61 <50 NA NA <1 28800 <1 413 0.054 <1 5.58 59 <0.2 140 1.42 SMW-2B 12/03/2015 6.3 7.35 19 207 0.3 -60 146 1.1 1.5 <1 <1 19 <50 0.035 NA <1 5990 <1 85 <0.01 <1 7.19 55 <0.2 100 2.25 SMW-2B 01/13/2016 6.3 8.19 18 203 0.2 22 227 6.2 3 <1 <1 12 <50 0.047 NA <1 2130 <1 48 0.01 <1 5.78 46 <0.2 140 1.59 SMW-3B 04/27/2015 5.6 9.04 20 308 0.3 176 381 8.76 0.3 <1 <1 46 <50 NA NA 1.42 1350 <1 57 14 <1 5.59 66 <0.2 200 0.324 SMW-3B 06/04/2015 5.5 7.80 21 342 0.29 113 318 3.2 1.5 <1 <1 53 50 NA 0.019 <1 1310 <1 91 15 <1 5.57 82 <0.2 250 <0.3 SMW-4B 04/28/2015 6.1 5.70 17 111 0.4 -68 137 6.44 1 <1 <1 28 <50 NA NA 1.17 1310 <1 73 <0.01 <1 7.64 33 <0.2 64 0.466 SMW-4B 06/05/2015 5.7 4.98 20 30 0.31 -60 145 1.8 4 <1 <1 17 <50 NA NA <1 7590 <1 85 0.039 <1 2.66 14 <0.2 42 <0.3 SMW-5B 04/28/2015 5.6 6.30 19 232 0.22 30 235 2.03 2.5 <1 1.7 36 87 NA NA <1 19700 <1 222 0.036 <1 6.4 75 <0.2 140 0.629 SMW-5B 06/05/2015 5.7 5.33 21 237 0.13 -8 197 4.68 2 <1 1.47 36 <50 NA NA <1 9910 <1 139 0.135 <1 3.6 65 <0.2 150 0.81 SMW-5B 01/14/2016 5.9 3.27 17 221 2.56 166 371 0.19 0 <1 <1 44 356 <0.03 NA <1 43 <1 43 0.048 <1 17.1 265 <0.2 120 0.639 SMW-6B 04/29/2015 5.2 6.10 17 127 0.7 163 368 2.38 0.8 <1 <1 45 68 NA NA <1 638 <1 44 0.513 <1 8.33 29 <0.2 82 <0.3 SMW-6B DUP 04/29/2015 5.2 6.10 17 127 0.7 163 368 2.38 0.8 <1 <1 44 61 NA NA <1 587 <1 43 0.53 <1 8.62 29 <0.2 72 <0.3 SMW-6B 06/03/2015 5.7 5.08 19 171 0.92 -29 176 0.46 <0.5 <1 <1 48 60 NA 0.022 <1 22 <1 30 0.8 <1 10.6 29 <0.2 83 <0.3 SMW-6B 01/14/2016 5.7 3.10 15 130 3.2 128 333 0.7 0 <1 <1 62 57 0.13 NA <1 14 <1 29 0.287 <1 8.52 38 <0.2 82 <0.3 Prepared by: BER Checked by: PBW Notes: ug/L = microgram per liter NTU = nephelometric turbidity unit mg/L = milligrams per liter Eh = Redox potential S.U. = Standard Unit mV = millivolts NE = Not Established umhos/cm = micro mhos per centimeter Deg C = Degree Celsius DUP = Duplicate DO = Dissolved Oxygen ft = feet Spec Cond = Specific Conductance ORP = Oxidation Reduction Potential ND = Not Detected Temp = Temperature NM = Not Measured NA = Not Analyzed mg - N/L = Milligram nitrogen per liter < = concentration not detected at or above the reporting limit. ^ = NC DHHS Health Screening Level * = Interim Maximum Allowable Concentrations (IMACs) of the 15A NCAC 02L Standard, Appendix 1, April, 1, 2013. B2 = Target analyte was detected in blank(s) at a concentration greater than 1/2 the reporting limit but less than the reporting limit. D3 = Sample was diluted due to the presence of high levels of non-target analytes or other matrix interference. M1 = Matrix spike recovery exceeds QC limits. M2 = Matrix spike recovery was Low: the associated Laboratory Control Spike (LCS) was acceptable. - Bold highlighted concentration indicates exceedance of the 15A NCAC 02L Standard, Appendix 2, April 1, 2013. TABLE 1-3 LOWER SURFICIAL GROUNDWATER EXCEEDANCES L.V. SUTTON ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, WILMINGTON, NC P:\Duke Energy Progress.1026\108. Sutton Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 1-3 Lower Surficial Groundwater Exceedances.xlsx Page 1 of 10 pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Boron Cadmium Chloride Chromium (VI) Chromium (VI) Speciation Chromium Cobalt Copper Iron Lead Manganese Selenium Sodium Strontium Sulfate Thallium Total Dissolved Solids Vanadium S.U.ft Deg C umhos /cm mg/L mV mV NTUs mg/L ug/L ug/L ug/L ug/L mg/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L mg/L ug/L mg/L ug/L mg/L ug/L 6.5-8.5 NE NE NE NE NE NE NE NE 1*10 700 2 250 0.07^0.07^10 1*1000 300 15 50 20 NE NE 250 0.2*500 0.3* Sample ID Sample Collection Date MW-4B 03/01/1990 7.0 7.03 NM NM NM NM NM NM NM NA 7 NA NA 4.91 NA NA NA NA NA 6500 NA NA 3 NA NA NA NA 140 NA MW-4B 07/01/1990 6.8 6.82 NM NM NM NM NM NM NM NA 7 NA NA 3.7 NA NA NA NA NA 4800 NA NA 2 NA NA NA NA 76 NA MW-4B 11/13/1990 6.8 6.37 NM NM NM NM NM NM NM NA 1 NA NA 3.8 NA NA NA NA NA 810 NA NA <1 NA NA NA NA 128 NA MW-4B 03/06/1991 6.8 8.01 NM NM NM NM NM NM NM NA 1 NA NA 5 NA NA NA NA NA 700 NA NA <1 NA NA NA NA 8 NA MW-4B 07/22/1991 6.0 6.26 NM NM NM NM NM NM NM NA 1 NA NA 3.6 NA NA NA NA NA 890 NA NA <1 NA NA NA NA 82 NA MW-4B 11/06/1991 6.6 7.17 NM NM NM NM NM NM NM NA 1 NA NA 4.1 NA NA NA NA NA 720 NA NA <1 NA NA NA NA 86 NA MW-4B 03/25/1992 7.1 6.01 NM NM NM NM NM NM NM NA 1 NA NA 3.9 NA NA NA NA NA 840 NA NA 1 NA NA NA NA 172 NA MW-4B 07/15/1992 6.7 7.59 NM NM NM NM NM NM NM NA 1 NA NA 3.9 NA NA NA NA NA 650 NA NA <1 NA NA NA NA 78 NA MW-4B 11/24/1992 6.7 7.62 NM NM NM NM NM NM NM NA <1 NA NA 3.7 NA NA NA NA NA 50 NA NA <1 NA NA NA NA 68 NA MW-4B 03/22/1993 6.3 8.57 NM NM NM NM NM NM NM NA 1 NA NA 3.8 NA NA NA NA NA 610 NA NA <1 NA NA NA NA 70 NA MW-4B 07/19/1993 6.6 6.69 NM NM NM NM NM NM NM NA 1 NA NA 3.8 NA NA NA NA NA 620 NA NA <1 NA NA NA NA 80 NA MW-4B 11/04/1993 6.6 7.86 NM NM NM NM NM NM NM NA 1 NA NA 3.55 NA NA NA NA NA 610 NA NA <1 NA NA NA NA 46 NA MW-4B 03/07/1994 6.7 9.18 NM NM NM NM NM NM NM NA 1 NA NA 3.75 NA NA NA NA NA 550 NA NA <1 NA NA NA NA 80 NA MW-4B 07/11/1994 6.6 5.93 NM NM NM NM NM NM NM NA 1 NA NA 3.55 NA NA NA NA NA 500 NA NA <1 NA NA NA NA 64 NA MW-4B 11/02/1994 6.3 8.00 NM NM NM NM NM NM NM NA <1 NA NA 3.3 NA NA NA NA NA 600 NA NA <1 NA NA NA NA 65 NA MW-4B 03/08/1995 7.1 8.29 NM NM NM NM NM NM NM NA 9.8 NA NA 3.2 NA NA NA NA NA 9700 NA NA 8 NA NA NA NA 86 NA MW-4B 03/06/1996 7.4 9.76 NM NM NM NM NM NM NM NA 4.2 NA NA 4.5 NA NA NA NA NA 5700 NA NA <1 NA NA NA NA 115 NA MW-4B 03/17/1997 6.4 7.98 NM NM NM NM NM NM NM NA 3.4 NA NA 3.8 NA NA NA NA NA 3200 NA NA 2 NA NA NA NA 94 NA MW-4B 03/16/1998 6.8 6.93 NM NM NM NM NM NM NM NA <5 NA NA 4.42 NA NA NA NA NA 907 NA NA <5 NA NA NA NA 70 NA MW-4B 03/17/1999 6.7 9.75 NM NM NM NM NM NM NM NA <5 NA NA 7.6 NA NA NA NA NA 1470 NA NA 17 NA NA NA NA 81.5 NA MW-4B 03/06/2000 6.6 8.77 NM NM NM NM NM NM NM NA <5 NA NA 6.75 NA NA NA NA NA 1070 NA NA <5 NA NA NA NA 78 NA MW-4B 03/16/2001 6.7 9.73 NM NM NM NM NM NM NM NA <5 NA NA 11.8 NA NA NA NA NA 536 NA NA <5 NA NA NA NA 75 NA MW-4B 03/06/2002 7.2 10.78 NM NM NM NM NM NM NM NA <5 NA NA 6.65 NA NA NA NA NA 755 NA NA <5 NA NA NA NA 67 NA MW-4B 03/18/2003 6.2 10.20 NM NM NM NM NM NM NM NA <5 NA NA 8.68 NA NA NA NA NA 989 NA NA <5 NA NA NA NA 70 NA MW-4B 03/09/2004 6.8 8.15 NM NM NM NM NM NM NM NA <5 NA NA 4.8 NA NA NA NA NA 627 NA NA <5 NA NA NA NA 77 NA MW-4B 03/07/2005 6.9 10.06 NM NM NM NM NM NM NM NA <5 NA NA 5.2 NA NA NA NA NA 741 NA NA <5 NA NA NA NA 72 NA MW-4B 03/02/2006 6.1 8.00 NM NM NM NM NM NM NM NA <5 NA NA 5.7 NA NA NA NA NA 588 NA NA <5 NA NA NA NA 74 NA MW-4B 12/12/2006 7.1 8.10 18 124 NM NM NM NM NM 0.14 0.28 12.5 <0.24 3.28 NA NA 0.61 NA 27.6 597 0.24 23 <0.14 NA NA 7.75 <0.014 53 NA MW-4B 03/06/2007 6.7 8.59 19 NM NM NM NM NM NM <3 2 10 <1 5 NA NA <5 NA <5 607 <3 22 <5 NA NA 8 <1 80 NA MW-4B 11/07/2007 6.4 11.32 NM 108 NM NM NM NM NM <2.5 <1 17 <1 7 NA NA <5 NA <5 623 <5 18 <5 NA NA 12 <1 62 NA MW-4B 03/11/2008 6.4 10.80 20 117 NM NM NM NM NM <2.5 2 19 <1 7 NA NA <5 NA <5 486 <5 16 <5 NA NA 7 <1 93 NA MW-4B 11/06/2008 6.7 10.16 20 115 NM NM NM NM NM <2 <2 <5 <1 5 NA NA <5 NA <5 405 <5 14 <5 NA NA <10 <1 74 NA MW-4B 03/10/2009 6.7 10.35 19 120 NM NM NM NM NM <40 <2 30 <10 5 NA NA <10 NA <10 751 <10 29 <20 NA NA 8 <10 61 NA MW-4B 10/06/2009 6.6 9.05 20 122 NM NM NM NM NM <5 <5 <20 <5 5 NA NA <5 NA <5 517 <5 20 <5 NA NA 9 <5 72 NA MW-4B 03/10/2010 6.8 8.54 20 132 NM NM NM NM NM <1 <1 10 <1 6 NA NA 3 NA <1 516 <1 18 <1 NA NA 9 <1 87 NA MW-4B 11/11/2010 6.7 7.93 20 129 NM NM NM NM NM <0.5 <5 <50 <0.08 6.2 NA NA <5 NA <5 417 <5 25.6 <10 NA NA 9.3 <0.1 68 NA MW-4B 03/02/2011 7.0 9.10 15 197 0.3 -68 137 1.64 NM <0.5 <5 <50 <0.08 29.6 b NA NA <5 NA <5 763 <5 33 <10 NA NA 7.9 b <0.1 116 b NA MW-4B 10/04/2011 6.9 10.81 19 224 0.51 -90 115 2.21 NM <0.5 <5 <50 <0.08 8.8 NA NA <5 NA <5 1250 <5 42.5 <10 NA NA 7.1 <0.1 105 NA MW-4B 03/06/2012 6.8 13.96 18 246 1.43 -113 92 0.55 NM <0.5 <5 <50 <0.08 12.7 NA NA <5 NA <5 1460 <5 44.3 <10 NA NA 6.9 <0.1 168 NA MW-4B 06/05/2012 6.8 12.33 19 274 1.16 -75 131 3.97 NM <0.5 <5 <50 <0.08 11.8 NA NA <5 NA <5 1100 <5 52.3 <10 NA NA 8.9 <0.1 153 NA MW-4B 10/02/2012 7.2 11.40 21 286 0.6 -105 100 0.94 NM <0.5 <5 <50 <0.08 10.8 NA NA <5 NA <5 1470 <5 49.1 <10 NA NA 8.5 <0.1 145 NA MW-4B 03/12/2013 7.0 10.74 18 236 0.36 -90 115 4.9 NM <1 <1 <50 <1 8.7 NA NA <5 NA <5 1650 <1 46 <1 NA NA 8.1 <0.2 140 NA MW-4B 06/12/2013 6.9 10.23 20 244 1 40 245 2.6 NM <1 <1 <50 <1 9 NA NA <5 NA <5 570 <1 16 <1 NA NA 8.8 <0.2 130 NA MW-4B 10/02/2013 7.4 9.72 21 323 0.33 -148 57 1 NM <1 <1 <50 <1 11 NA NA <5 NA <5 1720 <1 62 <1 NA NA 8.1 <0.2 180 NA MW-4B 03/04/2014 7.1 10.42 15 251 0.39 26 231 1.2 NM <1 <1 <50 <1 11 NA NA <5 NA <5 2020 <1 62 <1 NA NA 8.8 <0.2 180 NA MW-4B 06/02/2014 7.3 9.62 22 309 NM 12 217 6 NM <1 <1 <50 <1 10 NA NA <5 NA <5 891 <1 29 <1 NA NA 8.6 <0.2 170 NA MW-4B 10/01/2014 6.8 8.21 23 375 0.42 -122 83 2.7 NM <1 <1 <50 <1 12 NA NA <5 NA <5 2840 <1 80 <1 NA NA 9.4 <0.2 210 NA MW-4B 03/11/2015 7.0 8.46 18 368 0.2 -86 119 5.3 NM <1 <1 <50 <1 12 NA NA <5 NA <5 2940 <1 81 <1 NA NA 9.3 <0.2 180 NA MW-4B 06/01/2015 6.8 8.79 22 385 0.6 -43 162 9.98 NM <1 <1 <50 <1 13 NA NA <5 <1 <5 1280 <1 59 <1 5.61 NA 10 <0.2 210 NA MW-4B 10/12/2015 7.1 5.38 21 430 0.3 -124 81 3.95 NM <1 <1 <50 <1 13 NA NA <5 <1 <5 3920 <1 110 <1 6.7 167 10 <0.2 230 <0.3 MW-4B 12/04/2015 7.0 7.61 18 405 0.5 -94 111 4.25 1.5 <1 <1 <50 <1 13 <0.03 NA <1 <1 <1 3790 <1 97 <1 6.38 142 11 <0.2 210 <0.3 MW-4B 01/13/2016 6.9 7.90 17 395 0.5 -86 119 1.54 2.5 <1 <1 <50 <1 13 <0.03 NA <1 <1 <1 3400 <1 94 <1 6.63 140 11 <0.2 220 <0.3 MW-4B DUP 01/13/2016 6.9 7.90 17 395 0.5 -86 119 1.54 2.5 <1 <1 <50 <1 12 <0.03 NA <1 <1 <1 3160 <1 86 <1 6.25 125 9.9 <0.2 180 <0.3 MW-4B 03/08/2016 6.9 7.88 19 446 0.34 -78 127 4.1 2 <1 <1 <50 <1 12 <0.03 NA <5 <1 <5 3900 <1 102 <1 6.73 146 10 <0.2 200 <0.3 15A NCAC 02L Standard Reporting Units Analytical Parameter Field Parameters Analytical Results Background TABLE 1-3 LOWER SURFICIAL GROUNDWATER EXCEEDANCES L.V. SUTTON ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, WILMINGTON, NC P:\Duke Energy Progress.1026\108. Sutton Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 1-3 Lower Surficial Groundwater Exceedances.xlsx Page 2 of 10 pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Boron Cadmium Chloride Chromium (VI) Chromium (VI) Speciation Chromium Cobalt Copper Iron Lead Manganese Selenium Sodium Strontium Sulfate Thallium Total Dissolved Solids Vanadium S.U.ft Deg C umhos /cm mg/L mV mV NTUs mg/L ug/L ug/L ug/L ug/L mg/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L mg/L ug/L mg/L ug/L mg/L ug/L 6.5-8.5 NE NE NE NE NE NE NE NE 1*10 700 2 250 0.07^0.07^10 1*1000 300 15 50 20 NE NE 250 0.2*500 0.3* Sample ID Sample Collection Date 15A NCAC 02L Standard Reporting Units Analytical Parameter Field Parameters Analytical Results MW-4B 06/14/2016 6.9 9.13 23 500 0.3 -176 29 3.62 NM <1 <1 <50 <1 14 NA NA <5 <1 <5 4010 <1 122 <1 7.13 171 12 <0.2 260 <0.3 MW-5C 03/01/1990 NM NM NM NM NM NM NM NM NM NA 1 NA NA 295 NA NA NA NA NA 630 NA NA <1 NA NA NA NA 500 NA MW-5C 07/01/1990 NM NM NM NM NM NM NM NM NM NA 1 NA NA 270 NA NA NA NA NA 430 NA NA <1 NA NA NA NA 464 NA MW-5C 11/13/1990 NM NM NM NM NM NM NM NM NM NA <1 NA NA 205 NA NA NA NA NA 110 NA NA <1 NA NA NA NA 472 NA MW-5C 03/06/1991 NM NM NM NM NM NM NM NM NM NA <1 NA NA 190 NA NA NA NA NA <50 NA NA <1 NA NA NA NA 336 NA MW-5C 07/22/1991 NM NM NM NM NM NM NM NM NM NA <1 NA NA 176.7 NA NA NA NA NA 90 NA NA <1 NA NA NA NA 308 NA MW-5C 11/06/1991 NM NM NM NM NM NM NM NM NM NA 1 NA NA 184.2 NA NA NA NA NA 120 NA NA <1 NA NA NA NA 340 NA MW-5C 03/25/1992 NM NM NM NM NM NM NM NM NM NA <1 NA NA 170.2 NA NA NA NA NA 50 NA NA <1 NA NA NA NA 384 NA MW-5C 07/15/1992 NM NM NM NM NM NM NM NM NM NA <1 NA NA 175 NA NA NA NA NA 110 NA NA <1 NA NA NA NA 332 NA MW-5C 11/24/1992 NM NM NM NM NM NM NM NM NM NA <1 NA NA 169.7 NA NA NA NA NA 50 NA NA <1 NA NA NA NA 328 NA MW-5C 03/22/1993 NM NM NM NM NM NM NM NM NM NA <1 NA NA 141.7 NA NA NA NA NA 70 NA NA <1 NA NA NA NA 252 NA MW-5C 07/19/1993 NM NM NM NM NM NM NM NM NM NA <1 NA NA 116.6 NA NA NA NA NA 110 NA NA <1 NA NA NA NA 260 NA MW-5C 11/04/1993 NM NM NM NM NM NM NM NM NM NA <1 NA NA 114.1 NA NA NA NA NA 90 NA NA <1 NA NA NA NA 120 NA MW-5C 03/07/1994 NM NM NM NM NM NM NM NM NM NA <1 NA NA 124.1 NA NA NA NA NA 70 NA NA <1 NA NA NA NA 272 NA MW-5C 07/11/1994 NM NM NM NM NM NM NM NM NM NA <1 NA NA 120.6 NA NA NA NA NA 60 NA NA <1 NA NA NA NA 284 NA MW-5C 11/02/1994 NM NM NM NM NM NM NM NM NM NA <1 NA NA 130 NA NA NA NA NA 90 NA NA <1 NA NA NA NA 249 NA MW-5C 03/08/1995 NM NM NM NM NM NM NM NM NM NA <1 NA NA 140 NA NA NA NA NA 1200 NA NA <1 NA NA NA NA 297 NA MW-5C 03/06/1996 NM NM NM NM NM NM NM NM NM NA <1 NA NA 130 NA NA NA NA NA <100 NA NA <1 NA NA NA NA 267 NA MW-5C 03/17/1997 NM NM NM NM NM NM NM NM NM NA <1 NA NA 93 NA NA NA NA NA 350 NA NA <1 NA NA NA NA 162 NA MW-5C 03/16/1998 NM NM NM NM NM NM NM NM NM NA <5 NA NA 82 NA NA NA NA NA 11 NA NA <5 NA NA NA NA 198 NA MW-5C 03/17/1999 NM NM NM NM NM NM NM NM NM NA <5 NA NA 81.7 NA NA NA NA NA 159 NA NA <5 NA NA NA NA 224 NA MW-5C 03/06/2000 NM NM NM NM NM NM NM NM NM NA <5 NA NA 40.2 NA NA NA NA NA 46 NA NA <5 NA NA NA NA 114 NA MW-5C 03/16/2001 5.9 5.43 NM NM NM NM NM NM NM NA <5 NA NA 47.3 NA NA NA NA NA 285 NA NA <5 NA NA NA NA 111 NA MW-5C 03/06/2002 5.8 5.54 NM NM NM NM NM NM NM NA <5 NA NA 39.7 NA NA NA NA NA 127 NA NA <5 NA NA NA NA 253 NA MW-5C 03/18/2003 5.8 4.96 NM NM NM NM NM NM NM NA <5 NA NA 34.9 NA NA NA NA NA 14 NA NA <5 NA NA NA NA 81 NA MW-5C 03/09/2004 5.8 3.74 NM NM NM NM NM NM NM NA <5 NA NA 22.3 NA NA NA NA NA 373 NA NA <5 NA NA NA NA 70 NA MW-5C 03/07/2005 5.7 4.25 NM NM NM NM NM NM NM NA <5 NA NA 16.2 NA NA NA NA NA 122 NA NA <5 NA NA NA NA 52 NA MW-5C 03/02/2006 5.7 3.62 NM NM NM NM NM NM NM NA <5 NA NA 29.9 NA NA NA NA NA 115 NA NA <5 NA NA NA NA 105 NA MW-5C 03/06/2007 5.6 3.94 NM NM NM NM NM NM NM NA <1 NA NA 32 NA NA NA NA NA 129 NA NA <5 NA NA NA NA 88 NA MW-5C 03/11/2008 5.1 4.45 NM NM NM NM NM NM NM NA <2 NA NA 24 NA NA NA NA NA 2210 NA NA <5 NA NA NA NA 74 NA MW-5C 03/10/2009 5.4 4.24 NM NM NM NM NM NM NM NA <2 NA NA 21 NA NA NA NA NA <100 NA NA <20 NA NA NA NA 78 NA MW-5C 03/10/2010 5.7 6.25 NM NM NM NM NM NM NM NA <5 NA NA 23 NA NA NA NA NA 12 NA NA <10 NA NA NA NA 93 NA MW-5C 03/02/2011 5.1 3.99 18 88 1.28 189 394 1.47 NM NA <5 NA NA 23 b NA NA NA NA NA 72 NA NA <10 NA NA NA NA 78 b NA MW-5C 03/07/2012 5.4 4.19 19 156 0.96 -92 113 2.03 NM <0.5 <5 <50 <0.08 16.2 NA NA <5 NA <5 56.9 <5 336 <10 NA NA 7.8 <0.1 59 NA MW-5C 06/06/2012 5.5 4.23 20 102 1.66 -72 133 1.13 NM <0.5 <5 <50 <0.08 14.2 NA NA <5 NA <5 <50 <5 193 <10 NA NA 8.8 <0.1 52 NA MW-5C 10/02/2012 5.7 4.43 22 158 0.63 169 374 0.77 NM <0.5 <5 <50 0.1 22.4 NA NA <5 NA <5 <50 <5 447 <10 NA NA 11.9 <0.1 59 NA MW-5C 03/13/2013 5.5 4.42 17 80 0.87 195 400 1.18 NM <1 <1 <50 <1 12 NA NA <5 NA <5 26 <1 222 <1 NA NA 9.6 <0.2 47 NA MW-5C 06/13/2013 4.9 4.16 22 85 0.74 253 458 0.8 NM <1 <1 <50 <1 74 NA NA <5 NA <5 28 <1 130 <1 NA NA 74 <0.2 56 NA MW-5C 10/03/2013 5.7 3.91 23 127 0.31 251 456 0.72 NM <1 <1 <50 <1 18 NA NA <5 NA <5 26 <1 602 <1 NA NA 13 <0.2 72 NA MW-5C 03/05/2014 6.0 4.62 15 85 6.06 236 441 1.08 NM <1 <1 <50 <1 12 NA NA <5 NA <5 21 <1 111 <1 NA NA 8.8 <0.2 50 NA MW-5C 06/03/2014 5.8 4.40 21 115 NM 211 416 3 NM <1 <1 <50 <1 16 NA NA <5 NA <5 34 <1 441 <1 NA NA 11 <0.2 65 NA MW-5C 10/02/2014 5.5 3.66 24 124 0.41 237 442 0.93 NM <1 <1 <50 <1 18 NA NA <5 NA <5 23 <1 554 <1 NA NA 12 <0.2 63 NA MW-5C 03/10/2015 5.6 3.69 18 131 0.31 212 417 1.07 NM <1 <1 <50 <1 18 NA NA <5 NA <5 13 <1 535 <1 NA NA 12 <0.2 57 NA MW-5C DUP 03/10/2015 5.6 3.69 18 131 0.31 212 417 1.07 NM <1 <1 <50 <1 18 NA NA <5 NA <5 12 <1 516 <1 NA NA 12 <0.2 60 NA MW-5C 06/01/2015 5.5 4.00 21 135 0.97 212 417 1.03 NM <1 <1 <50 <1 21 NA NA <5 1.62 <5 <10 <1 441 <1 14.5 NA 14 <0.2 69 NA MW-5C 11/18/2015 5.7 3.35 21 122 0.8 222 427 0.58 NM <1 <1 <50 <1 18 NA NA <5 1.48 <5 <10 <1 412 <1 13.3 24 14 <0.2 78 <0.3 MW-5C 12/04/2015 5.7 3.32 18 102 1.3 189 394 1.4 ND <1 <1 <50 <1 15 0.19 NA <1 2.21 <1 21 <1 212 <1 11.5 23 11 <0.2 56 <0.3 MW-5C 01/13/2016 5.9 3.48 18 129 0.45 244 449 1.03 0 <1 <1 <50 <1 17 <0.03 NA <1 3.04 <1 14 <1 402 <1 13.4 23 14 <0.2 66 <0.3 MW-5C 03/08/2016 5.7 3.53 19 111 0.94 141 346 0.9 0 <1 <1 <50 <1 2.6 0.037 NA <5 1.87 <5 21 <1 187 <1 12.3 21 15 <0.2 62 <0.3 MW-5C 06/15/2016 5.4 4.30 22 106 0.85 217 422 0.52 NM <1 <1 <50 <1 15 0.075 NA <5 <1 <5 12 <1 89 <1 12 20 16 <0.2 48 0.384 MW-37C 03/27/2015 5.8 15.56 17 129 0.38 -44 161 6.36 2.25 <1 2.93 <50 <1 4.2 NA NA <1 2.99 <1 9500 <1 233 <1 3.16 20 10 <0.2 78 1.15 MW-37C 06/02/2015 5.7 15.70 20 120 0.36 20 225 19 4.5 <1 3.3 <50 <1 3.5 NA NA <1 2.73 <1 9580 <1 244 <1 2.64 18 9.8 <0.2 81 1.22 MW-37C 10/12/2015 5.9 12.45 21 117 0.39 16 221 1.17 NM <1 2.83 <50 <1 3.5 NA NA <5 1.93 <5 8830 <1 155 <1 2.51 17 8.4 <0.2 65 1 MW-37C 12/03/2015 6.1 14.65 19 102 0.3 16 221 0.27 3 <1 2.64 <50 <1 3.3 <0.03 NA <1 1.63 <1 7390 <1 103 <1 2.01 15 6 <0.2 46 0.918 MW-37C 01/13/2016 6.2 14.90 17 91 0.59 -11 194 1.68 3 <1 2.45 <50 <1 3.3 <0.03 NA <1 1.56 <1 6610 <1 82 <1 1.88 14 5.5 <0.2 52 0.986 TABLE 1-3 LOWER SURFICIAL GROUNDWATER EXCEEDANCES L.V. SUTTON ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, WILMINGTON, NC P:\Duke Energy Progress.1026\108. Sutton Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 1-3 Lower Surficial Groundwater Exceedances.xlsx Page 3 of 10 pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Boron Cadmium Chloride Chromium (VI) Chromium (VI) Speciation Chromium Cobalt Copper Iron Lead Manganese Selenium Sodium Strontium Sulfate Thallium Total Dissolved Solids Vanadium S.U.ft Deg C umhos /cm mg/L mV mV NTUs mg/L ug/L ug/L ug/L ug/L mg/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L mg/L ug/L mg/L ug/L mg/L ug/L 6.5-8.5 NE NE NE NE NE NE NE NE 1*10 700 2 250 0.07^0.07^10 1*1000 300 15 50 20 NE NE 250 0.2*500 0.3* Sample ID Sample Collection Date 15A NCAC 02L Standard Reporting Units Analytical Parameter Field Parameters Analytical Results MW-37C 03/08/2016 6.1 14.88 19 82 0.32 10 215 1 2 <1 2.34 <50 <1 3 <0.03 NA <5 1.28 <5 6010 <1 72 <1 1.79 12 5.8 <0.2 46 1.06 MW-37C 06/14/2016 6.0 15.99 21 126 0.18 -47 157 0.97 NM <1 2.46 <50 <1 3.7 <0.09 D3 NA <5 2.04 <5 9410 <1 250 <1 2.45 20 8.5 <0.2 77 1.09 ABMW-2D 04/27/2015 7.2 5.35 18 534 0.4 -144 61 1.86 1.2 <1 172 559 <1 42 NA NA <1 <1 <1 1380 <1 144 <1 45.7 1160 90 <0.2 310 0.613 ABMW-2D 06/04/2015 8.2 4.55 21 529 0.32 -152 53 1.28 NM <1 170 600 <1 43 NA 0.022 <1 <1 <1 1270 <1 150 <1 45.8 1230 91 <0.2 300 <0.3 ABMW-2D 12/04/2015 7.3 5.21 20 510 0.3 -94 111 0.64 1.5 <1 172 682 <1 43 <0.03 NA <1 2.68 <1 1290 <1 135 <1 44.8 1190 89 <0.2 300 0.687 ABMW-2D 01/13/2016 7.3 4.99 19 493 0.32 -96 110 3.2 1.5 <1 158 677 <1 44 <0.03 NA <1 2.69 <1 1300 <1 131 <1 44 1150 91 <0.2 310 0.67 AW-1C 02/06/2015 5.8 8.68 15 194 0.15 -58 148 6.83 2 <1 <1 120 <1 38 NA NA <1 5.07 <1 1700 <1 320 2.44 21.5 77 28 <0.2 110 <0.3 AW-1C 06/02/2015 4.8 8.95 22 97 0.5 130 335 4.93 <0.5 <1 <1 98 <1 29 NA NA <1 <1 <1 470 <1 179 2.6 16.4 62 32 <0.2 84 <0.3 AW-2C 02/05/2015 6.7 18.65 18 762 1.7 -444 -239 8.43 6 <1 <1 <50 <1 5.1 NA NA <1 2.01 3.84 16200 <1 401 <1 3.26 20 15 <0.2 42 <0.3 AW-2C 06/03/2015 5.9 19.25 20 60 0.6 77 282 2.69 4 <1 <1 <50 <1 4.7 NA <0.007 <1 <1 <1 7610 <1 57 <1 2.78 12 3 <0.2 38 <0.3 AW-3C 02/05/2015 6.2 8.99 18 816 0.12 -476 -271 9.2 3.5 <1 <1 1090 <1 130 NA NA <1 23.8 <1 26600 <1 2120 <1 75.3 537 110 <0.2 450 <0.3 AW-3C 06/11/2015 5.9 9.33 20 874 0.1 -67 138 1.61 2.5 <1 1.54 1370 <1 160 NA NA <1 6.91 <1 11300 <1 1830 <1 91.1 672 140 <0.2 510 0.75 AW-4C 02/05/2015 7.4 9.89 18 518 0.04 -579 -374 8.71 4.5 <1 <1 1160 <1 37 NA NA 1.16 24.5 <1 15100 <1 1270 <1 32.7 672 110 <0.2 300 0.85 AW-4C 06/05/2015 6.2 10.18 20 525 0.36 -47 158 14.7 4.5 <1 <1 1450 <1 49 NA NA <1 <1 <1 3990 <1 787 <1 39.4 877 120 <0.2 310 0.518 AW-4C 09/22/2015 5.9 10.38 21 573 0.2 -25 180 7.13 NM <1 <1 1270 <1 NA NA NA 1.65 6.15 <1 4950 <1 801 <1 44.6 693 NA <0.2 NA 2.04 AW-4C 12/04/2015 5.6 7.94 20 538 0.29 -21 184 0.01 1 <1 <1 1310 <1 55 <0.03 NA <1 6.15 <1 1400 <1 742 <1 44.6 876 150 <0.2 320 0.557 AW-4C 01/13/2016 5.6 8.60 13 523 0.34 28 233 0.92 0 <1 <1 1260 <1 57 <0.03 NA <1 7.09 <1 1170 <1 718 <1 43.7 858 160 <0.2 310 0.656 AW-5C 03/24/2015 4.7 16.46 19 76 1.35 152 357 3.45 0 <1 <1 90 <1 5 NA NA <1 <1 <1 138 <1 25 <1 2.97 26 26 <0.2 33 <0.3 AW-5C 06/03/2015 4.7 16.29 20 69 1.54 305 510 1.99 0 <1 <1 69 <1 4 NA 0.019 <1 <1 <1 128 <1 21 <1 2.53 25 23 <0.2 40 <0.3 AW-5C 12/03/2015 5.1 14.01 19 59 2.28 281 486 0.18 0 <1 <1 <50 <1 3.4 <0.03 M1 NA <1 <1 <1 51 <1 17 <1 2.11 34 15 <0.2 <25 <0.3 AW-5C 01/13/2016 4.7 14.67 14 57 2.8 290 495 1.4 0 <1 <1 <50 <1 3.2 <0.03 NA <1 <1 <1 65 <1 17 <1 1.93 28 16 <0.2 31 <0.3 AW-8C 03/25/2015 5.7 6.59 19 88 0.66 71 276 2.27 0 <1 <1 <50 <1 7.5 NA NA <1 2.26 <1 291 <1 57 <1 4.92 37 14 <0.2 43 <0.3 AW-8C 06/02/2015 4.4 6.80 22 62 3.31 144 349 3.28 <0.5 <1 <1 <50 <1 6.5 NA NA <1 1.19 <1 61 <1 23 <1 4.29 23 21 <0.2 30 <0.3 AW-8C 09/22/2015 5.6 7.76 23 68 3.13 107 312 5.67 NM <1 <1 <50 <1 NA NA NA <1 1.33 <1 487 <1 30 <1 5.6 31 NA <0.2 NA 0.877 AW-8C 12/03/2015 5.2 6.00 19 67 3.05 383 588 5.85 NM <1 <1 <50 <1 9.7 0.048 NA <1 <1 <1 376 <1 24 <1 5.66 31 10 <0.2 31 0.577 AW-8C 01/13/2016 5.2 5.93 18 73 2.79 285 490 4.11 0 <1 <1 <50 <1 11 0.044 NA <1 <1 <1 131 <1 21 <1 6.06 33 14 <0.2 32 <0.3 AW-9C 02/06/2015 5.8 8.31 16 383 0.15 -409 -204 9.91 4 <1 <1 611 <1 38 NA NA <1 8.19 <1 8190 <1 466 <1 30.2 246 97 <0.2 210 0.52 AW-9C 06/04/2015 5.1 8.25 21 314 0.92 204 409 2.34 NM <1 <1 554 <1 31 NA 0.046 <1 1.13 <1 102 <1 289 <1 24.4 193 99 <0.2 190 <0.3 AW-9C 09/23/2015 5.0 9.11 22 457 1.17 161 366 1.86 NM <1 <1 367 <1 NA NA NA <1 <1 <1 88 <1 164 <1 18.2 126 NA <0.2 NA 0.412 AW-9C 12/03/2015 5.1 7.41 19 123 4.2 200 405 3.74 0 <1 <1 149 <1 7.7 NA NA <1 <1 <1 98 <1 71 <1 7.39 67 29 <0.2 67 0.329 AW-9C DUP 12/03/2015 5.1 7.41 19 123 4.2 200 405 3.74 0 <1 <1 147 <1 7.9 NA NA <1 <1 <1 76 <1 71 <1 7.41 67 29 <0.2 53 0.326 AW-9C 01/13/2016 5.4 7.76 19 122 4.56 95 300 7.49 0 <1 <1 152 <1 11 <0.03 NA <1 <1 <1 155 <1 67 <1 8.28 72 32 <0.2 66 0.357 MW-2C 11/06/1991 5.9 9.69 NM NM NM NM NM NM NM NA <1 NA NA 56.1 NA NA NA NA NA 2200 NA NA 18 NA NA NA NA 296 NA MW-2C 03/25/1992 6.4 9.52 NM NM NM NM NM NM NM NA <1 NA NA 40.5 NA NA NA NA NA 1000 NA NA 2 NA NA NA NA 200 NA MW-2C 07/15/1992 6.2 10.81 NM NM NM NM NM NM NM NA <1 NA NA 42 NA NA NA NA NA 900 NA NA <1 NA NA NA NA 184 NA MW-2C 11/24/1992 6.2 10.74 NM NM NM NM NM NM NM NA <1 NA NA 39.5 NA NA NA NA NA 1700 NA NA <1 NA NA NA NA 200 NA MW-2C 03/22/1993 6.1 11.63 NM NM NM NM NM NM NM NA <1 NA NA 52.6 NA NA NA NA NA 2300 NA NA 10 NA NA NA NA 384 NA MW-2C 07/19/1993 6.2 10.49 NM NM NM NM NM NM NM NA <1 NA NA 52.6 NA NA NA NA NA 1800 NA NA 1 NA NA NA NA 448 NA MW-2C 11/04/1993 6.3 10.74 NM NM NM NM NM NM NM NA <1 NA NA 44 NA NA NA NA NA 900 NA NA 1 NA NA NA NA 184 NA MW-2C 03/07/1994 6.3 11.86 NM NM NM NM NM NM NM NA <1 NA NA 48.1 NA NA NA NA NA 930 NA NA 2 NA NA NA NA 316 NA MW-2C 07/11/1994 6.3 10.23 NM NM NM NM NM NM NM NA <1 NA NA 53.1 NA NA NA NA NA 770 NA NA <1 NA NA NA NA 440 NA MW-2C 11/02/1994 6.2 10.86 NM NM NM NM NM NM NM NA <1 NA NA 50 NA NA NA NA NA 730 NA NA 5 NA NA NA NA 337 NA MW-2C 03/08/1995 6.5 14.00 NM NM NM NM NM NM NM NA <1 NA NA 47 NA NA NA NA NA 1200 NA NA 3 NA NA NA NA 340 NA MW-2C 03/06/1996 6.5 13.96 NM NM NM NM NM NM NM NA <1 NA NA 53 NA NA NA NA NA 430 NA NA <1 NA NA NA NA 438 NA MW-2C 03/17/1997 6.4 12.75 NM NM NM NM NM NM NM NA 5.5 NA NA 51 NA NA NA NA NA 1500 NA NA 3 NA NA NA NA 412 NA MW-2C 03/16/1998 6.4 12.40 NM NM NM NM NM NM NM NA 55 NA NA 35.3 NA NA NA NA NA 3360 NA NA <5 NA NA NA NA 399 NA MW-2C 03/17/1999 6.9 13.93 NM NM NM NM NM NM NM NA 66 NA NA 38.5 NA NA NA NA NA 3970 NA NA 35 NA NA NA NA 355 NA MW-2C 03/06/2000 6.5 13.14 NM NM NM NM NM NM NM NA 35 NA NA 16.7 NA NA NA NA NA 1870 NA NA <5 NA NA NA NA 178 NA MW-2C 03/16/2001 6.7 14.80 NM NM NM NM NM NM NM NA <5 NA NA 37.2 NA NA NA NA NA 2810 NA NA <5 NA NA NA NA 392 NA MW-2C 03/06/2002 6.9 14.66 NM NM NM NM NM NM NM NA 104 NA NA 33.5 NA NA NA NA NA 3230 NA NA <5 NA NA NA NA 397 NA MW-2C 03/18/2003 6.5 14.42 NM NM NM NM NM NM NM NA 102 NA NA 51 NA NA NA NA NA 5310 NA NA <5 NA NA NA NA 427 NA MW-2C 03/09/2004 6.4 12.35 NM NM NM NM NM NM NM NA 47 NA NA 106 NA NA NA NA NA 3330 NA NA <5 NA NA NA NA 511 NA MW-2C 03/07/2005 6.4 14.45 NM NM NM NM NM NM NM NA 104 NA NA 55.6 NA NA NA NA NA 4600 NA NA <5 NA NA NA NA 443 NA MW-2C 03/02/2006 6.7 11.87 NM NM NM NM NM NM NM NA 126 NA NA 58.4 NA NA NA NA NA 3220 NA NA <5 NA NA NA NA 439 NA Surficial Lower TABLE 1-3 LOWER SURFICIAL GROUNDWATER EXCEEDANCES L.V. SUTTON ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, WILMINGTON, NC P:\Duke Energy Progress.1026\108. Sutton Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 1-3 Lower Surficial Groundwater Exceedances.xlsx Page 4 of 10 pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Boron Cadmium Chloride Chromium (VI) Chromium (VI) Speciation Chromium Cobalt Copper Iron Lead Manganese Selenium Sodium Strontium Sulfate Thallium Total Dissolved Solids Vanadium S.U.ft Deg C umhos /cm mg/L mV mV NTUs mg/L ug/L ug/L ug/L ug/L mg/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L mg/L ug/L mg/L ug/L mg/L ug/L 6.5-8.5 NE NE NE NE NE NE NE NE 1*10 700 2 250 0.07^0.07^10 1*1000 300 15 50 20 NE NE 250 0.2*500 0.3* Sample ID Sample Collection Date 15A NCAC 02L Standard Reporting Units Analytical Parameter Field Parameters Analytical Results MW-2C 12/12/2006 6.8 12.18 20 481 NM NM NM NM NM 0.75 280 2100 0.068 23.1 NA NA 0.18 NA 3.8 4750 0.33 159 0.58 NA NA 146 0.71 320 NA MW-2C 03/06/2007 6.7 13.66 20 NM NM NM NM NM NM <3 290 2690 <1 26.6 NA NA <5 NA 6 3420 <3 146 <5 NA NA 178 <1 325 NA MW-2C 11/07/2007 6.4 15.34 NM 567 NM NM NM NM NM <2.5 239 2160 <1 31 NA NA <5 NA <5 3460 <5 255 <5 NA NA 184 <1 328 NA MW-2C 03/11/2008 6.3 15.12 20 582 NM NM NM NM NM <2.5 134 2200 23 32 NA NA <5 NA <5 3060 <5 154 <5 NA NA 132 <1 357 NA MW-2C 11/06/2008 6.8 15.25 20 603 NM NM NM NM NM <2 186 2160 <1 29 NA NA <5 NA <5 3320 <5 65 <5 NA NA 141 <1 359 NA MW-2C 03/10/2009 6.8 14.71 20 591 NM NM NM NM NM <40 193 1600 <10 34 NA NA 11 NA <10 2880 <10 90 <20 NA NA 148 <10 348 NA MW-2C 10/06/2009 6.8 13.44 20 592 NM NM NM NM NM <5 114 1670 <5 36 NA NA <5 NA <5 3910 <5 153 <5 NA NA 140 <5 359 NA MW-2C 03/10/2010 6.8 13.21 19 618 NM NM NM NM NM <1 148 1910 <1 37 NA NA 3 NA 1 2550 <1 141 4 NA NA 162 <1 413 NA MW-2C 11/11/2010 6.8 12.33 20 631 NM NM NM NM NM <0.5 196 2150 <0.08 30.7 NA NA <5 NA <5 3750 <5 120 <10 NA NA 142 0.58 376 NA MW-2C 03/02/2011 6.7 13.94 19 573 NM NM NM 9.9 NM <0.5 267 1990 <0.08 31.1 b NA NA <5 NA <5 5740 <5 203 <10 NA NA 148 0.56 390 b NA MW-2C 10/04/2011 6.4 13.69 21 607 NM NM NM 5.73 NM <0.5 85.6 2270 <0.08 33.3 NA NA <5 NA <5 3140 <5 259 <10 NA NA 144 0.57 352 NA MW-2C 03/06/2012 6.5 15.48 19 679 NM NM NM 7.89 NM <0.5 232 2790 <0.08 36.3 NA NA <5 NA <5 7170 <5 350 <10 NA NA 142 0.6 457 NA MW-2C 06/05/2012 6.6 15.09 21 855 NM NM NM 6.97 NM <0.5 260 2640 <0.08 55.4 NA NA <5 NA <5 8050 <5 265 <10 NA NA 143 0.11 526 NA MW-2C 05/23/2014 6.7 NM 22 807 0.5 4 NM 28.7 NM <5.3 278 3020 <0.76 42.1 NA NA <1.6 NA <2.7 9510 <4.7 375 <8.4 0.0366 3100 130 <5.4 542 <2 MW-6C 03/01/1990 4.7 10.13 NM NM NM NM NM NM NM NA <1 NA NA 115 NA NA NA NA NA 7140 NA NA <1 NA NA NA NA 228 NA MW-6C 07/01/1990 4.7 10.09 NM NM NM NM NM NM NM NA <1 NA NA 103.6 NA NA NA NA NA 610 NA NA <1 NA NA NA NA 228 NA MW-6C 03/08/1995 4.8 5.72 NM NM NM NM NM NM NM NA <1 NA NA 79 NA NA NA NA NA 1500 NA NA <1 NA NA NA NA 202 NA MW-6C 03/06/1996 4.9 5.12 NM NM NM NM NM NM NM NA <1 NA NA 83 NA NA NA NA NA 2500 NA NA <1 NA NA NA NA 260 NA MW-6C 03/17/1997 5.5 3.72 NM NM NM NM NM NM NM NA <1 NA NA 47 NA NA NA NA NA 1200 NA NA <1 NA NA NA NA 311 NA MW-6C 03/17/1999 4.6 4.66 NM NM NM NM NM NM NM NA <5 NA NA 43.2 NA NA NA NA NA 193 NA NA 25 NA NA NA NA 270 NA MW-6C 03/18/2003 4.8 4.84 NM NM NM NM NM NM NM NA <5 NA NA 74.7 NA NA NA NA NA 489 NA NA <5 NA NA NA NA 323 NA MW-6C 03/09/2004 4.7 1.11 NM NM NM NM NM NM NM NA <5 NA NA 42.3 NA NA NA NA NA 1340 NA NA <5 NA NA NA NA 220 NA MW-6C 12/12/2006 7.1 2.51 20 534 NM NM NM NM NM 3 0.22 739 <1 83 NA NA 0.18 NA 2000 157 0.54 930 1.2 NA NA 142 0.1 311 NA MW-6C 03/06/2007 4.9 3.68 20 NM NM NM NM NM NM <3 <1 770 <1 72.2 NA NA <5 NA <5000 331 <3 711 <5 NA NA 177 <1 340 NA MW-6C 11/07/2007 4.6 6.28 NM 591 NM NM NM NM NM <2.5 <1 1140 <1 78 NA NA <5 NA <5000 1040 6 1090 <5 NA NA 190 <1 330 NA MW-6C 03/11/2008 4.3 6.10 20 591 NM NM NM NM NM <2.5 <2 925 <1 86 NA NA 7 NA <5000 275 <5 889 <5 NA NA 136 <1 345 NA MW-6C 11/06/2008 4.7 5.62 20 651 NM NM NM NM NM <2 <2 940 <10 95 NA NA <5 NA <5000 236 <5 644 <5 NA NA 142 <1 381 NA MW-6C 03/10/2009 4.6 5.13 19 561 NM NM NM NM NM <40 <2 896 <5 72 NA NA <10 NA <10000 138 <10 929 <20 NA NA 130 <10 332 NA MW-6C 10/06/2009 4.7 3.39 20 659 NM NM NM NM NM <5 <5 1510 <1 102 NA NA <5 NA <5000 153 <5 1260 <5 NA NA 139 <5 382 NA MW-6C 03/10/2010 4.7 3.48 19 682 NM NM NM NM NM <1 <1 1490 0.26 113 NA NA 3 NA 2000 424 <1 1130 5 NA NA 141 <1 429 NA MW-6C 11/11/2010 4.7 2.30 20 640 NM NM NM NM NM <0.5 <5 1350 0.17 105 NA NA <5 NA <5 219 <5 1060 <10 NA NA 132 <0.1 360 NA MW-6C 03/02/2011 5.0 3.91 18 492 NM NM NM 4.76 NM <0.5 <5 943 0.3 6.5 b NA NA <5 NA <5 636 <5 301 <10 NA NA 103 <0.1 304 b NA MW-6C 10/04/2011 4.6 3.91 22 798 NM NM NM 2.79 NM <0.5 <5 1690 0.23 153 NA NA <5 NA <5 780 <5 1180 <10 NA NA 130 <0.1 456 NA MW-6C 03/06/2012 4.9 5.82 17 703 NM NM NM 2.05 NM <0.5 <5 1680 0.2 163 NA NA <5 NA <5 407 <5 1280 <10 NA NA 121 <0.1 798 NA MW-6C 06/05/2012 4.6 5.49 21 799 NM NM NM 5.71 NM <0.5 <5 1320 NA 146 NA NA <5 NA <5 591 <5 1150 <10 NA NA 135 0.1 437 NA MW-6C 05/21/2014 4.8 NM 22 577 0.6 100 NM 4.92 NM <5.3 <6.8 1270 <0.76 85.10001 NA NA <1.6 NA <2.7 514 <4.7 857 <8.4 0.0672 431 112 <5.4 338 <2 MW-7C 03/01/1990 NM NM NM NM NM NM NM NM NM NA <1 NA NA 210 NA NA NA NA NA 3400 NA NA <1 NA NA NA NA 468 NA MW-7C 07/01/1990 NM NM NM NM NM NM NM NM NM NA <1 NA NA 175 NA NA NA NA NA 1600 NA NA <1 NA NA NA NA 384 NA MW-7C 03/08/1995 NM NM NM NM NM NM NM NM NM NA 1.4 NA NA 30 NA NA NA NA NA 2800 NA NA 2 NA NA NA NA 106 NA MW-7C 03/06/1996 NM NM NM NM NM NM NM NM NM NA 2.5 NA NA 85 NA NA NA NA NA 4900 NA NA <1 NA NA NA NA 299 NA MW-7C 03/17/1997 NM NM NM NM NM NM NM NM NM NA 2 NA NA 61 NA NA NA NA NA 5200 NA NA <1 NA NA NA NA 186 NA MW-7C 03/17/1999 NM NM NM NM NM NM NM NM NM NA <5 NA NA 87.4 NA NA NA NA NA 696 NA NA 27 NA NA NA NA 283 NA MW-7C 03/06/2000 NM NM NM NM NM NM NM NM NM NA <5 NA NA 39.5 NA NA NA NA NA 464 NA NA <5 NA NA NA NA 136 NA MW-7C 03/16/2001 NM NM NM NM NM NM NM NM NM NA <5 NA NA 61.4 NA NA NA NA NA 914 NA NA <5 NA NA NA NA 191 NA MW-7C 03/06/2002 NM NM NM NM NM NM NM NM NM NA <5 NA NA 48.2 NA NA NA NA NA 1330 NA NA <5 NA NA NA NA 527 NA MW-7C 03/18/2003 NM NM NM NM NM NM NM NM NM NA <5 NA NA 45.8 NA NA NA NA NA 861 NA NA <5 NA NA NA NA 191 NA MW-7C 03/09/2004 NM NM NM NM NM NM NM NM NM NA <5 NA NA 20.4 NA NA NA NA NA 502 NA NA <5 NA NA NA NA 104 NA MW-7C 03/10/2009 4.8 7.78 NM NM NM NM NM NM NM NA <2 NA NA 446 NA NA NA NA NA <100 NA NA <20 NA NA NA NA 897 NA MW-7C 03/06/2012 5.1 10.56 19 391 0.75 -88 117 3.97 NM <0.5 <5 709 0.083 49.2 NA NA <5 NA <5 561 <5 320 <10 NA NA 92 <0.1 228 NA MW-7C 06/05/2012 4.9 9.11 20 518 2.31 -51 154 8.06 NM <0.5 <5 767 0.1 78.6 NA NA <5 NA <5 707 <5 458 <10 NA NA 94.5 <0.1 298 NA MW-7C 10/02/2012 4.9 9.69 22 457 1.53 195 400 6.81 NM <0.5 <5 157 <0.08 77.7 NA NA <5 NA <5 273 <5 60 <10 NA NA 85.8 <0.1 225 NA MW-7C 03/12/2013 5.0 8.20 19 409 0.27 239 444 4.05 NM <1 <1 164 <1 68 NA NA <5 NA <5 222 <1 108 <1 NA NA 68 <0.2 230 NA MW-7C DUP 03/12/2013 5.0 8.20 19 409 0.27 239 444 4.05 NM <1 <1 164 <1 71 NA NA <5 NA <5 198 <1 105 <1 NA NA 64 <0.2 230 NA MW-7C 06/12/2013 5.0 7.72 22 422 0.58 244 449 4.33 NM <1 <1 185 3.34 14 NA NA <5 NA <5 282 <1 148 <1 NA NA 9.1 <0.2 230 NA MW-7C 10/03/2013 5.3 7.51 26 455 0.34 272 477 5.29 NM <1 <1 312 <1 71 NA NA <5 NA <5 266 <1 101 <1 NA NA 75 <0.2 250 NA TABLE 1-3 LOWER SURFICIAL GROUNDWATER EXCEEDANCES L.V. SUTTON ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, WILMINGTON, NC P:\Duke Energy Progress.1026\108. Sutton Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 1-3 Lower Surficial Groundwater Exceedances.xlsx Page 5 of 10 pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Boron Cadmium Chloride Chromium (VI) Chromium (VI) Speciation Chromium Cobalt Copper Iron Lead Manganese Selenium Sodium Strontium Sulfate Thallium Total Dissolved Solids Vanadium S.U.ft Deg C umhos /cm mg/L mV mV NTUs mg/L ug/L ug/L ug/L ug/L mg/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L mg/L ug/L mg/L ug/L mg/L ug/L 6.5-8.5 NE NE NE NE NE NE NE NE 1*10 700 2 250 0.07^0.07^10 1*1000 300 15 50 20 NE NE 250 0.2*500 0.3* Sample ID Sample Collection Date 15A NCAC 02L Standard Reporting Units Analytical Parameter Field Parameters Analytical Results MW-7C 03/04/2014 5.6 8.24 17 387 0.29 148 353 1.68 NM <1 <1 330 <1 83 NA NA <5 NA <5 128 <1 142 <1 NA NA 73 <0.2 250 NA MW-7C 06/02/2014 5.5 7.71 22 420 NM 214 419 4.3 NM <1 <1 391 <1 71 NA NA <5 NA <5 316 <1 131 <1 NA NA 67 <0.2 240 NA MW-7C 10/02/2014 5.2 6.46 23 193 3.44 232 437 3.79 NM <1 <1 386 <1 27 NA NA <5 NA <5 381 <1 136 <1 NA NA 48 <0.2 130 NA MW-7C 03/10/2015 5.3 6.68 19 248 1.46 232 437 2.13 NM <1 <1 490 <1 30 NA NA <5 NA <5 50 <1 202 <1 NA NA 67 <0.2 140 NA MW-7C 06/02/2015 5.0 7.00 21 299 1.23 256 461 1.86 0 <1 <1 546 <1 38 NA NA <1 <1 <1 73 <1 333 <1 29.7 242 83 <0.2 200 0.573 MW-7C 10/13/2015 5.5 4.36 22 158 3.3 214 419 0.32 NM <1 <1 411 <1 12 NA NA <5 <1 <5 21 <1 56 <1 11.2 164 53 0.216 78 <0.3 MW-7C 03/09/2016 5.2 6.18 19 145 3.54 287 492 1 0 <1 <1 304 <1 12 NA NA <5 1.51 <5 144 <1 173 <1 11.4 109 42 <0.2 79 0.642 MW-7C 06/14/2016 5.3 7.33 22 138 3.21 218 423 1.09 NM <1 <1 279 <1 12 NA NA <5 <1 <5 86 <1 85 <1 10.1 124 37 <0.2 58 0.611 MW-8 03/01/1990 6.1 8.06 NM NM NM NM NM NM NM NA <1 NA NA 260 NA NA NA NA NA 4800 NA NA <1 NA NA NA NA 444 NA MW-8 07/01/1990 6.1 8.37 NM NM NM NM NM NM NM NA <1 NA NA 255 NA NA NA NA NA 3200 NA NA <1 NA NA NA NA 488 NA MW-8 07/22/1991 5.4 7.32 NM NM NM NM NM NM NM NA <1 NA NA 164.7 NA NA NA NA NA 320 NA NA <1 NA NA NA NA 304 NA MW-8 07/15/1992 5.6 8.70 NM NM NM NM NM NM NM NA <1 NA NA 130 NA NA NA NA NA 380 NA NA <1 NA NA NA NA 276 NA MW-8 03/22/1993 5.6 10.82 NM NM NM NM NM NM NM NA <1 NA NA 117.6 NA NA NA NA NA 620 NA NA <1 NA NA NA NA 260 NA MW-8 07/19/1993 5.7 9.41 NM NM NM NM NM NM NM NA <1 NA NA 119.1 NA NA NA NA NA 500 NA NA <1 NA NA NA NA 312 NA MW-8 11/04/1993 5.7 9.91 NM NM NM NM NM NM NM NA <1 NA NA 127.6 NA NA NA NA NA 360 NA NA <1 NA NA NA NA 184 NA MW-8 11/02/1994 5.7 10.21 NM NM NM NM NM NM NM NA <1 NA NA 130 NA NA NA NA NA 510 NA NA <1 NA NA NA NA 290 NA MW-8 03/08/1995 5.9 7.35 NM NM NM NM NM NM NM NA 2.4 NA NA 120 NA NA NA NA NA 13000 NA NA <1 NA NA NA NA 280 NA MW-8 03/09/2004 5.6 6.42 NM NM NM NM NM NM NM NA <5 NA NA 24.7 NA NA NA NA NA 671 NA NA <5 NA NA NA NA 85 NA MW-8 03/07/2005 5.7 7.70 NM NM NM NM NM NM NM NA <5 NA NA 32.3 NA NA NA NA NA 450 NA NA <5 NA NA NA NA 116 NA MW-8 03/07/2012 5.7 7.72 19 299 NM NM NM 0.52 NM <0.5 <5 <50 <0.08 23.6 NA NA <5 NA <5 63.6 <5 376 <10 NA NA 19.2 <0.1 102 NA MW-8 06/06/2012 5.6 7.79 19 170 NM NM NM 0.65 NM <0.5 <5 <50 <0.08 28.3 NA NA <5 NA <5 <50 <5 344 <10 NA NA 21.5 <0.1 101 NA MW-8 03/05/2014 5.5 7.93 15 82 0.9 272 477 0.9 NM <1 <1 <50 <1 NA NA NA <5 NA <5 <10 <1 270 <1 NA NA NA <0.2 52 NA MW-9 03/01/1990 5.5 6.91 NM NM NM NM NM NM NM NA <1 NA NA 11.5 NA NA NA NA NA 360 NA NA <1 NA NA NA NA 20 NA MW-9 07/01/1990 6.7 7.01 NM NM NM NM NM NM NM NA <1 NA NA 9 NA NA NA NA NA 320 NA NA <1 NA NA NA NA 0 NA MW-9 03/08/1995 5.5 17.97 NM NM NM NM NM NM NM NA <1 NA NA 32 NA NA NA NA NA 1400 NA NA <1 NA NA NA NA 78 NA MW-9 03/06/1996 5.6 19.44 NM NM NM NM NM NM NM NA 3 NA NA 28 NA NA NA NA NA 4300 NA NA <1 NA NA NA NA 185 NA MW-9 03/17/1997 5.4 17.73 NM NM NM NM NM NM NM NA <1 NA NA 34 NA NA NA NA NA 600 NA NA <1 NA NA NA NA 60 NA MW-9 03/17/1999 5.3 17.64 NM NM NM NM NM NM NM NA <5 NA NA 22.3 NA NA NA NA NA 489 NA NA 10 NA NA NA NA 50 NA MW-9 03/16/2001 5.3 18.60 NM NM NM NM NM NM NM NA <5 NA NA 23.1 NA NA NA NA NA 586 NA NA <5 NA NA NA NA 69 NA MW-9 03/06/2002 5.8 19.35 NM NM NM NM NM NM NM NA <5 NA NA 8.99 NA NA NA NA NA 316 NA NA <5 NA NA NA NA 35 NA MW-9 03/18/2003 5.6 18.26 NM NM NM NM NM NM NM NA <5 NA NA 22.7 NA NA NA NA NA 471 NA NA <5 NA NA NA NA 73 NA MW-9 03/09/2004 5.1 15.64 NM NM NM NM NM NM NM NA <5 NA NA 5.7 NA NA NA NA NA 398 NA NA <5 NA NA NA NA 35 NA MW-10 03/01/1990 6.2 8.65 NM NM NM NM NM NM NM NA 2 NA NA 8.51 NA NA NA NA NA 3800 NA NA <1 NA NA NA NA 156 NA MW-10 07/01/1990 5.3 8.77 NM NM NM NM NM NM NM NA <1 NA NA 7.01 NA NA NA NA NA 770 NA NA <1 NA NA NA NA 0 NA MW-10 07/19/1993 4.8 9.70 NM NM NM NM NM NM NM NA <1 NA NA 47.6 NA NA NA NA NA 490 NA NA <1 NA NA NA NA 124 NA MW-10 03/08/1995 5.4 16.18 NM NM NM NM NM NM NM NA <1 NA NA 5.4 NA NA NA NA NA 1300 NA NA <1 NA NA NA NA 34 NA MW-10 03/17/1999 4.7 16.11 NM NM NM NM NM NM NM NA <5 NA NA 34.7 NA NA NA NA NA 556 NA NA 11 NA NA NA NA 130 NA MW-10 03/09/2004 4.8 14.16 NM NM NM NM NM NM NM NA <5 NA NA 13.3 NA NA NA NA NA 485 NA NA <5 NA NA NA NA 68 NA MW-10 03/07/2012 5.0 16.80 20 177 NM NM NM 0.53 NM <0.5 <5 53.3 <0.08 12.2 NA NA <5 NA <5 105 <5 86.7 <10 NA NA 16.2 <0.1 72 NA MW-10 06/05/2012 5.2 16.98 20 103 NM NM NM 1.19 NM <0.5 <5 73 <0.08 11.6 NA NA <5 NA <5 156 <5 84 <10 NA NA 19.3 <0.1 53 NA MW-11 03/01/1990 5.2 8.51 NM NM NM NM NM NM NM NA <1 NA NA 170 NA NA NA NA NA 4900 NA NA <1 NA NA NA NA 400 NA MW-11 07/01/1990 5.2 8.33 NM NM NM NM NM NM NM NA <1 NA NA 150 NA NA NA NA NA 3400 NA NA <1 NA NA NA NA 408 NA MW-11 11/13/1990 4.9 8.13 NM NM NM NM NM NM NM NA <1 NA NA 110 NA NA NA NA NA 4800 NA NA <1 NA NA NA NA 424 NA MW-11 03/06/1991 5.0 9.02 NM NM NM NM NM NM NM NA <1 NA NA 99 NA NA NA NA NA 1800 NA NA <1 NA NA NA NA 344 NA MW-11 07/22/1991 4.7 8.00 NM NM NM NM NM NM NM NA <1 NA NA 94.6 NA NA NA NA NA 1400 NA NA <1 NA NA NA NA 320 NA MW-11 11/06/1991 4.8 9.26 NM NM NM NM NM NM NM NA <1 NA NA 85.1 NA NA NA NA NA 890 NA NA <1 NA NA NA NA 300 NA MW-11 03/25/1992 5.1 8.82 NM NM NM NM NM NM NM NA <1 NA NA 70.1 NA NA NA NA NA 1000 NA NA <1 NA NA NA NA 308 NA MW-11 07/15/1992 4.7 8.13 NM NM NM NM NM NM NM NA <1 NA NA 45.6 NA NA NA NA NA 640 NA NA <1 NA NA NA NA 220 NA MW-11 07/19/1993 4.6 8.84 NM NM NM NM NM NM NM NA <1 NA NA 79.6 NA NA NA NA NA 490 NA NA <1 NA NA NA NA 348 NA MW-11 11/04/1993 4.6 9.09 NM NM NM NM NM NM NM NA <1 NA NA 79.6 NA NA NA NA NA 440 NA NA <1 NA NA NA NA 168 NA MW-11 03/17/1999 4.9 14.02 NM NM NM NM NM NM NM NA <5 NA NA 11.4 NA NA NA NA NA 379 NA NA 11 NA NA NA NA 51.5 NA MW-11 03/18/2003 5.0 15.41 NM NM NM NM NM NM NM NA <5 NA NA 13.3 NA NA NA NA NA 1010 NA NA <5 NA NA NA NA 33 NA MW-11 03/11/2008 4.3 16.00 NM NM NM NM NM NM NM NA <2 NA NA 8 NA NA NA NA NA 330 NA NA <5 NA NA NA NA 29 NA MW-11 03/02/2011 4.5 13.11 18 49 5.16 226 431 3.36 NM NA <5 NA NA <5 NA NA NA NA NA 420 NA NA <10 NA NA NA NA <50 NA MW-11 03/07/2012 5.0 15.41 18 126 2.87 -63 142 3.13 NM <0.5 <5 <50 <0.08 7.3 NA NA <5 NA <5 174 <5 91.4 <10 NA NA 8.8 <0.1 48 NA TABLE 1-3 LOWER SURFICIAL GROUNDWATER EXCEEDANCES L.V. SUTTON ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, WILMINGTON, NC P:\Duke Energy Progress.1026\108. Sutton Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 1-3 Lower Surficial Groundwater Exceedances.xlsx Page 6 of 10 pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Boron Cadmium Chloride Chromium (VI) Chromium (VI) Speciation Chromium Cobalt Copper Iron Lead Manganese Selenium Sodium Strontium Sulfate Thallium Total Dissolved Solids Vanadium S.U.ft Deg C umhos /cm mg/L mV mV NTUs mg/L ug/L ug/L ug/L ug/L mg/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L mg/L ug/L mg/L ug/L mg/L ug/L 6.5-8.5 NE NE NE NE NE NE NE NE 1*10 700 2 250 0.07^0.07^10 1*1000 300 15 50 20 NE NE 250 0.2*500 0.3* Sample ID Sample Collection Date 15A NCAC 02L Standard Reporting Units Analytical Parameter Field Parameters Analytical Results MW-11 06/06/2012 4.6 15.46 19 65 2.27 -56 149 2.97 NM <0.5 <5 <50 0.081 7.1 NA NA <5 NA <5 245 <5 88.3 <10 NA NA 10.6 <0.1 39 NA MW-11 10/02/2012 4.5 14.26 22 70 1.86 297 502 3.5 NM <0.5 <5 <50 0.11 8 NA NA <5 NA <5 181 <5 99.6 <10 NA NA 10.7 <0.1 <25 NA MW-11 03/13/2013 4.6 14.69 17 71 1.38 323 528 2.33 NM <1 <1 <50 <1 9 NA NA <5 NA <5 142 <1 90 <1 NA NA 13 <0.2 37 NA MW-11 06/13/2013 4.0 14.81 22 82 1.79 281 486 2.61 NM <1 <1 <50 <1 10 NA NA <5 NA <5 219 <1 115 <1 NA NA 13 <0.2 46 NA MW-11 10/03/2013 4.5 13.04 22 86 1.5 372 577 2.15 NM <1 <1 <50 <1 11 NA NA <5 NA <5 130 <1 117 <1 NA NA 14 <0.2 58 NA MW-11 03/05/2014 4.7 15.04 14 76 2.36 323 528 5.04 NM <1 <1 <50 <1 9.4 NA NA <5 NA <5 295 <1 86 <1 NA NA 12 <0.2 42 NA MW-11 06/03/2014 4.7 14.19 23 63 NM 335 540 2 NM <1 <1 <50 <1 6.8 NA NA <5 NA <5 140 <1 60 <1 NA NA 10 <0.2 41 NA MW-11 06/01/2015 4.5 13.51 21 48 4.48 323 528 3.69 NM <1 <1 <50 <1 4 NA NA <5 <1 <5 48 <1 30 <1 1.89 NA 12 <0.2 <25 NA MW-11 10/13/2015 4.7 9.85 25 80 5.3 265 470 0.69 NM <1 <1 <50 <1 7.4 NA NA <5 <1 <5 28 <1 22 <1 4.7 15 21 <0.2 50 <0.3 MW-11 DUP 10/13/2015 4.7 9.85 25 80 5.3 265 470 0.69 NM <1 <1 <50 <1 7.4 NA NA <5 <1 <5 31 <1 22 <1 4.76 15 25 <0.2 50 <0.3 MW-11 03/09/2016 4.8 10.84 23 80 6.96 200 405 0.8 0 <1 <1 <50 <1 7.6 NA NA <5 <1 <5 29 <1 52 <1 4.72 24 18 <0.2 38 0.31 MW-11 06/15/2016 4.8 18.46 26 72 3.47 318 523 9.41 NM <1 <1 <50 <1 6.7 NA NA <5 <1 <5 487 2.17 23 <1 4.11 16 20 <0.2 <25 1.11 MW-12 03/01/1990 5.8 9.76 NM NM NM NM NM NM NM NA <1 NA NA 185 NA NA NA NA NA 8000 NA NA <1 NA NA NA NA 428 NA MW-12 07/01/1990 5.6 9.55 NM NM NM NM NM NM NM NA 4 NA NA 170 NA NA NA NA NA 4000 NA NA <1 NA NA NA NA 436 NA MW-12 11/13/1990 5.1 9.55 NM NM NM NM NM NM NM NA 1 NA NA 160 NA NA NA NA NA 1400 NA NA 1 NA NA NA NA 524 NA MW-12 03/06/1991 5.0 10.32 NM NM NM NM NM NM NM NA <1 NA NA 161 NA NA NA NA NA 370 NA NA 1 NA NA NA NA 476 NA MW-12 07/22/1991 5.0 9.11 NM NM NM NM NM NM NM NA <1 NA NA 164.2 NA NA NA NA NA 440 NA NA <1 NA NA NA NA 448 NA MW-12 07/15/1992 4.8 9.47 NM NM NM NM NM NM NM NA <1 NA NA 150 NA NA NA NA NA 380 NA NA <1 NA NA NA NA 488 NA MW-12 03/22/1993 4.9 11.30 NM NM NM NM NM NM NM NA <1 NA NA 95.1 NA NA NA NA NA 440 NA NA 1 NA NA NA NA 432 NA MW-12 07/19/1993 4.9 9.37 NM NM NM NM NM NM NM NA <1 NA NA 83.1 NA NA NA NA NA 420 NA NA <1 NA NA NA NA 448 NA MW-12 11/04/1993 4.9 10.07 NM NM NM NM NM NM NM NA <1 NA NA 84.6 NA NA NA NA NA 410 NA NA <1 NA NA NA NA 248 NA MW-12 03/07/1994 4.9 11.85 NM NM NM NM NM NM NM NA <1 NA NA 90 NA NA NA NA NA 340 NA NA 1 NA NA NA NA 408 NA MW-12 07/11/1994 4.9 9.42 NM NM NM NM NM NM NM NA 1 NA NA 82.1 NA NA NA NA NA 310 NA NA <1 NA NA NA NA 384 NA MW-12 11/02/1994 4.9 10.61 NM NM NM NM NM NM NM NA <1 NA NA 88 NA NA NA NA NA 370 NA NA <1 NA NA NA NA 361 NA MW-12 03/08/1995 4.9 10.76 NM NM NM NM NM NM NM NA <1 NA NA 82 NA NA NA NA NA 1300 NA NA <1 NA NA NA NA 367 NA MW-12 03/06/1996 5.0 10.50 NM NM NM NM NM NM NM NA 2.6 NA NA 82 NA NA NA NA NA 3900 NA NA <1 NA NA NA NA 369 NA MW-12 03/17/1997 5.1 8.74 NM NM NM NM NM NM NM NA <1 NA NA 69 NA NA NA NA NA 1000 NA NA <1 NA NA NA NA 341 NA MW-12 03/16/1998 5.1 7.36 NM NM NM NM NM NM NM NA <5 NA NA 56.2 NA NA NA NA NA 896 NA NA <5 NA NA NA NA 366 NA MW-12 03/17/1999 4.9 10.16 NM NM NM NM NM NM NM NA <5 NA NA 57.5 NA NA NA NA NA 988 NA NA 34 NA NA NA NA 364 NA MW-12 03/06/2000 5.0 8.64 NM NM NM NM NM NM NM NA <5 NA NA 48.2 NA NA NA NA NA 1020 NA NA <5 NA NA NA NA 326 NA MW-12 03/16/2001 5.2 10.79 NM NM NM NM NM NM NM NA <5 NA NA 58.6 NA NA NA NA NA 552 NA NA <5 NA NA NA NA 337 NA MW-12 03/06/2002 5.1 11.56 NM NM NM NM NM NM NM NA <5 NA NA 46.5 NA NA NA NA NA 1570 NA NA <5 NA NA NA NA 313 NA MW-12 03/18/2003 4.9 10.87 NM NM NM NM NM NM NM NA <5 NA NA 52.1 NA NA NA NA NA 1480 NA NA <5 NA NA NA NA 335 NA MW-12 03/09/2004 5.1 7.88 NM NM NM NM NM NM NM NA <5 NA NA 14.7 NA NA NA NA NA 649 NA NA <5 NA NA NA NA 177 NA MW-12 03/07/2005 5.1 10.31 NM NM NM NM NM NM NM NA <5 NA NA 36.6 NA NA NA NA NA 581 NA NA <5 NA NA NA NA 304 NA MW-12 03/02/2006 4.7 7.19 NM NM NM NM NM NM NM NA <5 NA NA 46.6 NA NA NA NA NA 733 NA NA <5 NA NA NA NA 315 NA MW-12 03/06/2007 5.0 8.22 NM NM NM NM NM NM NM NA 1 NA NA 59.2 NA NA NA NA NA 3560 NA NA <5 NA NA NA NA 302 NA MW-12 03/02/2011 5.4 8.73 16 400 1.07 177 382 1.09 NM NA <5 NA NA 36.6 b NA NA NA NA NA 316 NA NA <10 NA NA NA NA 286 b NA MW-12 03/07/2012 6.3 11.29 15 693 0.86 -74 131 8.96 NM <0.5 <5 1450 0.092 26.9 NA NA <5 NA <5 1490 17.3 281 <10 NA NA 98 <0.1 274 NA MW-12 06/06/2012 6.6 11.10 19 306 4.07 -52 153 2.07 NM <0.5 <5 1260 <0.08 33.7 NA NA <5 NA <5 317 <5 221 <10 NA NA 130 <0.1 312 NA MW-12 10/02/2012 5.6 10.16 23 447 0.72 99 304 8.26 NM <0.5 <5 1290 <0.08 26.2 NA NA <5 NA <5 753 5.3 204 <10 NA NA 159 <0.1 260 NA MW-12 03/13/2013 5.6 10.47 18 415 0.39 221 426 2.79 NM <1 <1 1510 <1 24 NA NA <5 NA <5 255 3.17 280 <1 NA NA 130 <0.2 260 NA MW-12 06/13/2013 5.2 10.50 23 360 0.29 NM NM 3.76 NM <1 <1 1360 <1 18 NA NA <5 NA <5 411 4.82 211 <1 NA NA 110 <0.2 220 NA MW-12 10/03/2013 5.9 8.79 21 428 0.42 214 419 1.35 NM <1 <1 1560 <1 24 NA NA <5 NA <5 110 1.32 236 <1 NA NA 110 <0.2 270 NA MW-12 03/05/2014 6.5 10.79 15 323 3.85 292 497 2.11 NM <1 <1 928 <1 17 NA NA <5 NA <5 97 <1 55 <1 NA NA 78 <0.2 200 NA MW-12 06/03/2014 6.1 10.08 24 276 NM 182 387 1.4 NM <1 <1 1050 <1 16 NA NA <5 NA <5 79 <1 142 <1 NA NA 64 <0.2 170 NA MW-12 10/02/2014 5.7 7.73 21 287 0.27 273 478 0.48 NM <1 <1 1300 <1 39 NA NA <5 NA <5 93 <1 196 <1 NA NA 110 <0.2 230 NA MW-12 03/10/2015 6.7 8.06 20 341 0.44 265 470 2.26 NM <1 <1 1500 <1 110 NA NA <5 NA <5 112 <1 316 <1 NA NA 160 <0.2 430 NA MW-12 06/02/2015 8.5 8.79 22 264 5.52 156 361 4.33 2.5 <1 <1 1450 <1 100 NA 0.013 <1 1.26 <1 5790 <1 683 <1 59.1 1310 130 <0.2 410 <0.3 MW-12 10/12/2015 6.9 3.51 21 389 0.3 -77 128 2.49 NM <1 1.51 341 <1 14 NA NA <5 1.08 <5 3210 <1 396 <1 10.6 911 38 <0.2 260 3.36 MW-12 01/13/2016 6.9 6.32 16 433 0.32 -91 114 0.33 0 <1 <1 1400 <1 86 <0.03 NA <1 1.02 <1 842 <1 706 <1 48.5 1300 130 <0.2 350 0.34 MW-12 03/09/2016 5.7 6.43 19 598 0.3 134 339 2.1 1 <1 <1 1290 <1 70 NA NA <5 1.09 <5 824 1.18 632 <1 41.4 1260 120 <0.2 320 0.835 MW-12 06/16/2016 5.7 8.61 21 532 0.28 63 268 0.74 NM <1 <1 1210 <1 56 NA NA <5 1.08 <5 667 <1 462 <1 34.5 1260 120 <0.2 310 0.457 MW-15D 06/10/2015 6.4 3.02 21 721 0.39 -17 188 1.4 <0.5 <1 <1 560 <1 130 NA NA <1 13.5 <1 85 <1 940 <1 69.8 571 85 <0.2 430 <0.3 MW-16D 06/10/2015 5.4 6.51 21 637 0.1 71 276 4.16 NM <1 <1 680 <1 110 NA <0.006 <1 5.22 <1 1020 <1 311 <1 79.5 215 120 <0.2 350 2.09 TABLE 1-3 LOWER SURFICIAL GROUNDWATER EXCEEDANCES L.V. SUTTON ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, WILMINGTON, NC P:\Duke Energy Progress.1026\108. Sutton Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 1-3 Lower Surficial Groundwater Exceedances.xlsx Page 7 of 10 pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Boron Cadmium Chloride Chromium (VI) Chromium (VI) Speciation Chromium Cobalt Copper Iron Lead Manganese Selenium Sodium Strontium Sulfate Thallium Total Dissolved Solids Vanadium S.U.ft Deg C umhos /cm mg/L mV mV NTUs mg/L ug/L ug/L ug/L ug/L mg/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L mg/L ug/L mg/L ug/L mg/L ug/L 6.5-8.5 NE NE NE NE NE NE NE NE 1*10 700 2 250 0.07^0.07^10 1*1000 300 15 50 20 NE NE 250 0.2*500 0.3* Sample ID Sample Collection Date 15A NCAC 02L Standard Reporting Units Analytical Parameter Field Parameters Analytical Results MW-16D 12/04/2015 4.7 6.90 21 663 0.2 216 421 6.8 1 <1 <1 445 <1 130 <0.03 NA <1 5.75 <1 1630 <1 232 <1 88.9 157 140 <0.2 370 2.76 MW-16D 01/14/2016 4.8 6.83 22 655 0.72 120 325 9.13 1 <1 <1 444 <1 130 <0.03 NA <1 5.71 <1 1510 <1 234 <1 85.4 146 110 <0.2 360 3.12 MW-18 07/19/1993 NM NM NM NM NM NM NM NM NM NA NA NA NA NA NA NA NA NA NA 500 NA NA NA NA NA NA NA NA NA MW-18 03/02/2006 6.5 9.94 NM NM NM NM NM NM NM NA 39 NA NA 35.2 NA NA NA NA NA 2940 NA NA <5 NA NA NA NA 389 NA MW-18 03/06/2007 6.5 10.58 NM NM NM NM NM NM NM NA 113 NA NA 53 NA NA NA NA NA 2000 NA NA <5 NA NA NA NA 398 NA MW-18 03/11/2008 6.5 11.48 NM NM NM NM NM NM NM NA 67 NA NA 48 NA NA NA NA NA 4140 NA NA <5 NA NA NA NA 358 NA MW-18 03/10/2009 6.6 11.23 NM NM NM NM NM NM NM NA 110 NA NA 73 NA NA NA NA NA 6160 NA NA <20 NA NA NA NA 447 NA MW-18 03/10/2010 6.7 10.08 NM NM NM NM NM NM NM NA 80 NA NA 407 NA NA NA NA NA 6910 NA NA 10 NA NA NA NA 1040 NA MW-18 03/02/2011 6.7 10.83 18 705 NM NM NM 1.06 NM NA 26.9 NA NA 162 NA NA NA NA NA 420 NA NA <10 NA NA NA NA 570 NA MW-18 03/06/2012 6.7 11.89 18 753 NM NM NM 9.69 NM <0.5 169 1550 <0.08 88.6 NA NA <5 NA <5 6510 <5 266 <10 NA NA 81.6 <0.1 505 NA MW-18 06/05/2012 6.7 11.45 20 738 NM NM NM 8.73 NM <0.5 159 1150 <0.08 77.3 NA NA <5 NA <5 4920 <5 215 <10 NA NA 69.4 <0.1 415 NA MW-19 04/11/1993 NM NM NM NM NM NM NM NM NM NA NA NA NA NA NA NA NA NA NA 360 NA NA NA NA NA NA NA NA NA MW-19 12/12/2006 6.3 20.43 20 685 NM NM NM NM NM 0.49 0.63 850 0.19 71.6 NA NA 0.2 NA 4.6 25.1 0.18 356 1 NA NA 126 0.33 334 NA MW-19 03/06/2007 6.2 20.24 20 NM NM NM NM NM NM <3 1 1180 <1 54.6 NA NA <5 NA 6 84 <3 358 <5 NA NA 160 <1 294 NA MW-19 11/07/2007 6.2 21.48 NM 583 NM NM NM NM NM <2.5 <1 1280 <1 46 NA NA <5 NA <5 74 <5 339 <5 NA NA 156 <1 336 NA MW-19 03/11/2008 6.2 21.37 21 566 NM NM NM NM NM <2.5 <2 1620 <1 36 NA NA <5 NA <5 121 <5 354 <5 NA NA 141 <1 360 NA MW-19 11/06/2008 6.5 21.70 21 581 NM NM NM NM NM <2 <2 1760 <1 32 NA NA <5 NA <5 142 <5 182 <5 NA NA 148 <1 314 NA MW-19 03/10/2009 6.4 21.14 21 585 NM NM NM NM NM <40 2 2020 <10 35 NA NA <10 NA <10 200 <10 311 <20 NA NA 161 11 354 NA MW-19 10/06/2009 6.5 19.91 21 582 NM NM NM NM NM <5 <5 1960 <5 36 NA NA <5 NA <5 215 <5 337 <5 NA NA 155 <5 359 NA MW-19 03/10/2010 6.6 19.88 20 542 NM NM NM NM NM <1 <1 1920 <1 33 NA NA 5 NA 1 322 <1 267 3 NA NA 142 <1 361 NA MW-19 11/11/2010 6.5 19.28 21 504 NM NM NM NM NM <0.5 <5 1830 <0.08 28.8 NA NA <5 NA <5 296 <5 249 <10 NA NA 124 0.31 293 NA MW-19 03/02/2011 6.3 20.54 18 520 0.54 125 330 0.7 NM <0.5 <5 1960 <0.08 39.2 b NA NA <5 NA <5 60.8 <5 347 <10 NA NA 126 0.3 334 b NA MW-19 10/04/2011 6.3 20.45 23 488 0.57 -18 187 0.6 NM <0.5 <5 1710 <0.08 28.3 NA NA <5 NA <5 113 <5 366 <10 NA NA 111 0.28 311 NA MW-19 03/06/2012 6.7 22.07 19 454 1.1 -118 87 0.28 NM <0.5 <5 1920 <0.08 28.8 NA NA <5 NA <5 <50 <5 14.6 <10 NA NA 109 0.23 329 NA MW-19 06/05/2012 6.3 21.66 20 646 1.94 -44 161 1.34 NM <0.5 <5 1940 <0.08 52.2 NA NA <5 NA <5 73.8 <5 436 <10 NA NA 151 0.38 404 NA MW-19 DUP 06/05/2012 6.3 21.66 20 646 1.94 -44 161 1.34 NM <0.5 <5 1920 <0.08 52.5 NA NA <5 NA <5 121 <5 410 <10 NA NA 151 0.38 398 NA MW-19 10/03/2012 6.7 21.61 22 540 3.81 132 337 1.06 NM <0.5 <5 1680 <0.08 30.5 NA NA <5 NA <5 <50 <5 14.3 <10 NA NA 148 <0.1 304 NA MW-19 03/12/2013 6.5 21.54 20 684 0.34 52 257 1.22 NM <1 <1 1830 <1 73 NA NA <5 NA <5 117 <1 508 <1 NA NA 130 0.62 470 NA MW-19 06/12/2013 6.2 21.20 23 819 0.46 NM NM 1.64 NM <1 <1 1710 <1 69 NA NA <5 NA <5 504 <1 539 <1 NA NA 110 0.311 480 NA MW-19 10/02/2013 6.4 20.51 23 845 0.43 31 236 1.5 NM <1 <1 1990 <1 51 NA NA <5 NA <5 528 <1 531 <1 NA NA 120 0.43 500 NA MW-19 03/04/2014 6.6 22.70 17 677 0.31 216 421 1 NM <1 <1 2020 <1 53 NA NA <5 NA <5 646 <1 475 <1 NA NA 130 0.32 490 NA MW-19 06/03/2014 6.5 21.18 20 781 NM 44 249 0.97 NM <1 <1 2110 <1 43 NA NA <5 NA <5 725 <1 497 <1 NA NA 130 0.299 480 NA MW-19 10/02/2014 6.3 19.90 22 735 0.28 20 225 0.91 NM <1 2.23 2190 <1 44 NA NA <5 NA <5 1080 <1 489 <1 NA NA 140 0.464 470 NA MW-19 03/11/2015 6.4 20.10 20 679 0.31 187 392 1.12 NM <1 2.22 2270 <1 28 NA NA <5 NA <5 1380 <1 444 <1 NA NA 150 0.405 400 NA MW-19 06/01/2015 6.4 20.50 22 630 0.39 42 247 5.44 NM <1 2.62 2080 <1 28 NA NA <5 5.27 <5 914 <1 386 <1 31.2 NA 140 0.458 380 NA MW-19 10/13/2015 6.4 17.37 23 588 0.4 83 288 1.22 NM <1 2.11 2010 <1 30 NA NA <5 3.25 <5 527 <1 403 <1 32.7 1680 140 0.52 42 1.03 MW-19 03/08/2016 6.5 19.56 20 559 1.91 28 233 0.5 0 <1 2.12 1700 <1 35 NA NA <5 2.2 <5 359 <1 258 <1 31.1 1390 140 0.27 320 0.88 MW-19 DUP 03/08/2016 6.5 19.56 20 559 1.91 28 233 0.5 0 <1 2.24 1730 <1 36 NA NA <5 2.38 <5 414 <1 282 <1 31.8 1420 130 0.227 300 1.09 MW-19 06/14/2016 6.5 20.90 23 520 1.08 72 277 0.77 NM <1 2.12 1620 <1 39 NA NA <5 2.41 <5 416 <1 296 <1 28.1 1270 130 0.284 280 1.51 MW-20D 06/10/2015 7.0 8.21 21 605 0.3 -156 49 4.3 0.5 <1 2.25 305 <1 78 NA NA <1 <1 <1 864 <1 131 <1 57.9 187 66 <0.2 340 <0.3 MW-20D DUP 06/10/2015 7.0 8.21 21 605 0.3 -156 49 4.3 0.5 <1 5.23 408 <1 77 NA NA <1 <1 <1 1270 <1 192 <1 59.2 227 67 <0.2 340 0.358 MW-21C 10/03/2011 7.0 20.20 21 610 NM -10 195 0.2 NM NA 6.2 1640 NA NA NA NA NA NA NA 947 NA 1200 <10 NA NA 117 NA 511 NA MW-21C 01/18/2012 6.7 21.63 18 452 0.2 -35 170 1.4 NM NA <5 1490 NA NA NA NA NA NA NA 1730 NA 1520 <10 NA NA 138 NA 404 NA MW-21C 10/03/2012 6.6 21.42 23 796 1.38 -59 146 9.38 NM <0.5 5.8 1720 <0.08 76.2 NA NA <5 NA <5 6430 <5 1460 <10 NA NA 814 <0.1 447 NA MW-21C 03/12/2013 6.5 21.18 20 803 0.43 -26 179 3.24 NM <1 15 1660 <1 79 NA NA <5 NA <5 7680 <1 1350 <1 NA NA 120 <0.2 500 NA MW-21C 06/12/2013 6.4 20.96 21 746 1.57 NM NM 7.29 NM <1 1.25 1730 <1 67 NA NA <5 NA <5 727 <1 764 <1 NA NA 140 <0.2 450 NA MW-21C 10/02/2013 6.5 20.35 24 873 0.46 -42 163 9.39 NM <1 22.8 1510 <1 68 NA NA <5 NA <5 4910 <1 874 <1 NA NA 96 <0.2 500 NA MW-21C 03/04/2014 6.8 21.47 16 691 0.39 9 214 9.92 NM <1 27.6 1830 <1 63 NA NA <5 NA <5 6600 <1 808 <1 NA NA 120 <0.2 480 NA MW-21C 06/03/2014 6.6 21.00 20 804 NM -25 180 7.24 NM <1 28.5 2000 <1 60 NA NA <5 NA <5 5310 <1 805 <1 NA NA 110 <0.2 490 NA MW-21C 10/02/2014 6.4 19.80 23 769 0.3 -52 153 7.14 NM <1 45 2210 <1 53 NA NA <5 NA <5 6160 <1 652 <1 NA NA 130 <0.2 490 NA MW-21C 03/11/2015 6.6 19.99 21 728 0.27 -35 171 8.06 NM <1 55.4 2020 <1 32 NA NA <5 NA <5 5550 <1 493 <1 NA NA 130 <0.2 420 NA MW-21C 06/01/2015 6.5 20.35 21 697 0.2 -42 163 15.9 NM <1 53.8 2120 <1 34 NA NA <5 10.6 <5 5110 <1 430 <1 34.8 NA 140 <0.2 420 NA MW-21C 10/13/2015 6.5 17.49 23 579 0.3 -30 174 8.68 NM <1 75.9 1890 <1 27 NA NA <5 9.4 <5 5890 <1 448 <1 28.5 1650 120 <0.2 350 1.35 MW-21C 03/08/2016 6.7 19.53 19 532 4.15 105 310 9.57 0 <1 14.3 1200 <1 28 NA NA <5 <1 <5 728 <1 31 <1 19.8 992 130 <0.2 330 0.326 MW-21C 06/15/2016 6.6 20.79 23 339 0.87 -22 183 9.98 NM <1 47.3 1070 <1 21 NA NA <5 5.02 <5 3320 <1 358 <1 17 836 74 <0.2 180 1.11 TABLE 1-3 LOWER SURFICIAL GROUNDWATER EXCEEDANCES L.V. SUTTON ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, WILMINGTON, NC P:\Duke Energy Progress.1026\108. Sutton Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 1-3 Lower Surficial Groundwater Exceedances.xlsx Page 8 of 10 pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Boron Cadmium Chloride Chromium (VI) Chromium (VI) Speciation Chromium Cobalt Copper Iron Lead Manganese Selenium Sodium Strontium Sulfate Thallium Total Dissolved Solids Vanadium S.U.ft Deg C umhos /cm mg/L mV mV NTUs mg/L ug/L ug/L ug/L ug/L mg/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L mg/L ug/L mg/L ug/L mg/L ug/L 6.5-8.5 NE NE NE NE NE NE NE NE 1*10 700 2 250 0.07^0.07^10 1*1000 300 15 50 20 NE NE 250 0.2*500 0.3* Sample ID Sample Collection Date 15A NCAC 02L Standard Reporting Units Analytical Parameter Field Parameters Analytical Results MW-22C 10/03/2011 6.9 8.58 24 641 6.3 -53 152 0.41 NM NA <5 1680 NA NA NA NA NA NA NA 171 NA 737 <10 NA NA 122 NA 400 NA MW-22C 01/17/2012 6.8 10.56 20 516 11.83 38 243 1.4 NM NA <5 1650 NA NA NA NA NA NA NA 256 NA 814 <10 NA NA 125 NA 341 NA MW-22C 10/03/2012 6.3 10.02 24 652 0.78 14 219 1.2 NM <0.5 <5 2100 <0.08 36 NA NA <5 NA <5 286 <5 780 <10 NA NA 172 0.35 380 NA MW-22C 03/12/2013 6.4 9.99 19 602 0.43 66 271 1 NM <1 <1 1840 <1 34 NA NA <5 NA <5 431 <1 798 <1 NA NA 160 0.296 390 NA MW-22C 06/12/2013 6.2 9.81 23 763 0.3 86 291 1.86 NM <1 <1 2250 <1 39 NA NA <5 NA <5 262 <1 828 <1 NA NA 160 0.251 480 NA MW-22C 10/02/2013 6.3 8.82 25 764 0.42 96 301 2.16 NM <1 <1 2290 <1 32 NA NA <5 NA <5 230 <1 1330 <1 NA NA 150 0.25 460 NA MW-22C 03/04/2014 7.0 10.37 15 526 5.55 197 402 0.65 NM <1 <1 1950 <1 35 NA NA <5 NA <5 <10 <1 18 <1 NA NA 160 <0.2 390 NA MW-22C 06/02/2014 6.5 9.73 22 755 NM 45 250 4.1 NM <1 <1 2500 <1 37 NA NA <5 NA <5 628 <1 1360 <1 NA NA 160 0.226 490 NA MW-22C 10/02/2014 6.2 8.12 23 710 0.37 163 368 2.23 NM <1 <1 2660 <1 33 NA NA <5 NA <5 608 <1 1710 <1 NA NA 160 0.422 470 NA MW-22C 03/11/2015 6.4 8.43 20 733 0.22 128 333 2.93 NM <1 <1 2690 <1 34 NA NA <5 NA <5 499 <1 986 <1 NA NA 160 0.506 430 NA MW-22C 06/01/2015 6.4 8.87 22 684 0.4 23 228 0.51 NM <1 <1 2560 <1 41 NA NA <5 4.77 <5 141 <1 732 <1 35.9 NA 160 0.398 440 NA MW-22C 10/13/2015 6.3 4.81 23 664 0.3 164 369 0.57 NM <1 <1 2460 <1 52 NA NA <5 6.34 <5 166 <1 865 <1 39.7 2090 170 0.631 430 <0.3 MW-22C 03/08/2016 6.2 7.53 20 757 0.31 34 239 1 0.5 <1 <1 2550 <1 67 NA NA <5 10.7 <5 346 <1 981 <1 49.5 1960 200 0.49 460 <0.3 MW-22C 06/15/2016 6.3 9.26 23 709 0.38 94 299 1.03 NM <1 <1 2650 <1 65 NA NA <5 9.43 <5 237 <1 825 <1 44.6 1900 190 0.427 420 0.335 MW-23C 10/03/2011 6.6 5.46 23 618 6.8 -50 155 1.41 NM NA <5 1640 NA NA NA NA NA NA NA 311 NA 970 <10 NA NA 131 NA 460 NA MW-23C 01/16/2012 6.4 7.67 19 413 0.24 136 341 0.9 NM NA <5 1780 NA NA NA NA NA NA NA 53.4 NA 1190 <10 NA NA 134 NA 335 NA MW-23C 10/02/2012 6.1 6.93 23 766 0.67 44 249 1.37 NM <0.5 <5 2580 <0.08 71.1 NA NA <5 NA <5 176 <5 1050 <10 NA NA 200 <0.1 456 NA MW-23C 03/12/2013 6.2 7.14 19 758 0.28 85 290 0.92 NM <1 <1 2400 <1 76 NA NA <5 NA <5 187 <1 1150 <1 NA NA 180 <0.2 470 NA MW-23C 06/12/2013 6.0 7.00 23 842 0.31 65 270 1.58 NM <1 <1 2710 <1 90 NA NA <5 NA <5 370 <1 1300 <1 NA NA 200 <0.2 530 NA MW-23C 10/02/2013 6.1 5.72 25 878 0.41 94 299 1.66 NM <1 <1 3000 <1 74 NA NA <5 NA <5 395 <1 1500 <1 NA NA 210 <0.2 540 NA MW-23C 03/04/2014 6.6 7.58 15 677 0.51 206 411 3.46 NM <1 <1 3000 <1 98 NA NA <5 NA 10 364 <1 1590 <1 NA NA 190 <0.2 540 NA MW-23C 06/02/2014 6.3 7.76 22 850 NM 83 288 2.8 NM <1 <1 2970 <1 89 NA NA <5 NA <5 340 <1 1630 <1 NA NA 190 <0.2 540 NA MW-23C 10/01/2014 6.0 4.95 22 856 0.3 186 391 2.16 NM <1 <1 3600 <1 76 NA NA <5 NA <5 445 <1 1520 <1 NA NA 240 0.212 580 NA MW-23C DUP 10/01/2014 6.0 4.95 22 856 0.3 186 425 2.16 NM <1 <1 3600 <1 76 NA NA <5 NA <5 440 <1 1540 <1 NA NA 220 <0.2 560 NA MW-23C 03/10/2015 6.4 5.30 18 636 0.16 301 506 4.59 NM <1 <1 3060 <1 32 NA NA <5 NA <5 147 <1 384 <1 NA NA 120 <0.2 380 NA MW-23C 06/02/2015 6.6 5.94 22 454 0.33 16 221 1.27 <0.5 <1 <1 1940 <1 29 NA 0.022 <1 4.83 <1 76 <1 287 <1 22.1 1520 69 <0.2 280 0.323 MW-23C 11/18/2015 6.5 2.99 20 307 0.8 209 414 1.38 NM <1 <1 1080 <1 29 NA NA <5 5.13 <5 28 <1 133 6.16 17.7 972 49 <0.2 190 <0.3 MW-23C 12/04/2015 6.7 3.47 16 238 1.08 62 267 0.56 0 NA NA NA NA NA <0.03 NA NA NA NA NA NA NA NA NA NA NA NA NA NA MW-23C 03/08/2016 6.3 4.09 19 591 0.21 135 340 0.2 0 <1 <1 1720 <1 74 NA NA <5 12.4 <5 25 <1 210 5.75 42.9 1700 110 <0.2 360 0.469 MW-23C 06/15/2016 6.4 6.12 22 263 1.07 168 373 1.94 NM <1 <1 938 <1 21 NA NA <5 6.3 <5 61 <1 86 10.3 14.7 788 52 <0.2 140 0.691 MW-24C 10/04/2011 5.8 3.52 20 1003 NM 78 283 3.84 NM NA <5 1240 NA NA NA NA NA NA NA 583 NA 852 <10 NA NA 137 NA 560 NA MW-24C 01/17/2012 6.0 5.71 19 909 13.03 66 271 2.1 NM NA <5 1240 NA NA NA NA NA NA NA 515 NA 891 <10 NA NA 145 NA 597 NA MW-24C 10/03/2012 5.9 4.69 25 1027 0.87 32 237 4.62 NM <0.5 <5 1160 0.083 164 NA NA <5 NA <5 2860 <5 2360 <10 NA NA 163 <0.1 579 NA MW-24C 03/13/2013 5.8 5.15 17 919 0.29 67 272 3.11 NM <1 7.37 1030 <1 160 NA NA <5 NA <5 6230 <1 2250 <1 NA NA 150 <0.2 530 NA MW-24C 06/12/2013 5.8 5.07 22 951 1.22 84 289 4.63 NM <1 3.33 999 <1 170 NA NA <5 NA <5 2580 <1 2280 <1 NA NA 150 <0.2 550 NA MW-24C 10/02/2013 5.6 3.44 24 967 0.34 135 340 4.07 NM <1 2.81 988 <1 170 NA NA <5 NA <5 2290 <1 2150 <1 NA NA 150 0.23 560 NA MW-24C 03/05/2014 6.1 5.59 14 1070 0.56 196 401 5.83 NM <1 5.81 1030 <1 190 NA NA <5 NA <5 7450 <1 2060 <1 NA NA 160 <0.2 610 NA MW-24C 06/03/2014 5.8 4.97 26 943 NM 138 343 8.1 NM <1 3.02 1090 <1 170 NA NA <5 NA <5 3600 <1 1110 <1 NA NA 150 <0.2 550 NA MW-24C 10/01/2014 5.0 2.87 23 904 0.39 239 444 4.94 NM <1 1.54 1130 <1 170 NA NA <5 NA <5 1990 <1 1180 <1 NA NA 160 <0.2 560 NA MW-24C 03/10/2015 5.4 3.16 18 899 0.27 294 499 5.32 NM <1 3.56 1150 <1 160 NA NA <5 NA <5 5600 <1 1470 <1 NA NA 160 <0.2 500 NA MW-24C 06/02/2015 5.5 4.00 22 858 1.48 77 282 0.69 3 <1 <1 405 <1 150 NA 0.019 <1 <1 <1 <10 <1 46 <1 10.9 534 150 <0.2 500 0.543 MW-24C 06/15/2016 5.3 3.55 22 770 0.2 161 366 2.26 NM <1 1.66 1030 <1 140 NA NA <5 15.5 <5 2770 <1 958 <1 74.3 474 180 <0.2 440 0.613 MW-27C 05/22/2014 5.4 NM 20 358 1.06 104 NM 37.9 NM <5.3 <6.8 517 <0.76 52.3 NA NA <30 NA <2.7 1090 <4.7 342 55 0.0502 294 96.9 <5.4 258 <10 MW-27C 12/04/2015 4.8 3.82 17 430 0.92 299 504 7.05 0 <1 <1 542 <1 60 0.12 NA <1 1.84 <1 108 <1 224 65.3 44.6 267 110 <0.2 230 0.383 MW-27C 01/13/2016 4.9 3.84 15 406 0.79 234 439 4.04 0 <1 <1 459 <1 54 0.07 NA <1 1.76 <1 44 <1 178 61.9 41.3 229 110 <0.2 230 <0.3 MW-28C 10/03/2011 6.3 21.69 22 121 11.1 -26 179 1.58 NM NA <5 94.9 NA NA NA NA NA NA NA 59 NA 58.1 <10 NA NA 17.6 NA 1240 NA MW-28C 01/17/2012 6.0 23.22 19 106 2.43 160 365 1.9 NM NA <5 193 NA NA NA NA NA NA NA <50 NA 59.9 <10 NA NA 18 NA 69 NA MW-28C 10/03/2012 6.2 22.84 23 370 0.93 96 301 2.1 NM <0.5 <5 652 <0.08 37.7 NA NA <5 NA <5 <50 <5 245 <10 NA NA 47.2 <0.1 177 NA MW-28C 03/12/2013 6.2 22.39 20 342 0.28 96 301 1.01 NM <1 <1 1030 <1 18 NA NA <5 NA <5 20 <1 367 <1 NA NA 78 <0.2 210 NA MW-28C 06/12/2013 6.0 22.23 23 431 0.34 56 261 1.29 NM <1 <1 1260 <1 30 NA NA <5 NA <5 32 <1 409 <1 NA NA 100 <0.2 250 NA MW-28C DUP 06/12/2013 6.0 22.23 23 431 0.34 56 261 1.29 NM <1 <1 1250 <1 30 NA NA <5 NA <5 39 <1 402 <1 NA NA 100 <0.2 270 NA MW-28C 03/04/2014 6.2 22.58 16 211 0.33 203 408 0.75 NM <1 <1 711 <1 17 NA NA <5 NA <5 21 <1 166 1.51 NA NA 57 <0.2 150 NA MW-28C 06/01/2015 5.6 21.42 22 55 5.26 77 282 1.09 NM <1 <1 <50 <1 2.6 NA NA <5 <1 <5 <10 <1 8 <1 1.55 NA 10 <0.2 26 NA MW-28C 10/12/2015 5.5 18.59 21 47 6.6 185 390 0.61 NM <1 <1 <50 <1 2.6 NA NA <5 <1 <5 <10 <1 9 <1 1.32 57 8.6 <0.2 <25 0.573 MW-28C 03/08/2016 5.1 20.60 20 48 6.74 266 471 0.3 0 <1 <1 <50 <1 3.4 NA NA <5 <1 <5 <10 <1 10 <1 1.66 44 11 <0.2 <25 0.362 TABLE 1-3 LOWER SURFICIAL GROUNDWATER EXCEEDANCES L.V. SUTTON ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, WILMINGTON, NC P:\Duke Energy Progress.1026\108. Sutton Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 1-3 Lower Surficial Groundwater Exceedances.xlsx Page 9 of 10 pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Boron Cadmium Chloride Chromium (VI) Chromium (VI) Speciation Chromium Cobalt Copper Iron Lead Manganese Selenium Sodium Strontium Sulfate Thallium Total Dissolved Solids Vanadium S.U.ft Deg C umhos /cm mg/L mV mV NTUs mg/L ug/L ug/L ug/L ug/L mg/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L mg/L ug/L mg/L ug/L mg/L ug/L 6.5-8.5 NE NE NE NE NE NE NE NE 1*10 700 2 250 0.07^0.07^10 1*1000 300 15 50 20 NE NE 250 0.2*500 0.3* Sample ID Sample Collection Date 15A NCAC 02L Standard Reporting Units Analytical Parameter Field Parameters Analytical Results MW-28C 06/14/2016 5.5 21.93 26 47 5.73 221 426 0.52 NM <1 <1 <50 <1 3.9 NA NA <5 <1 <5 10 <1 11 <1 1.63 44 11 <0.2 <25 0.447 MW-31C 10/04/2011 5.5 6.55 22 620 7.6 -4 201 0.72 NM NA <5 1020 NA NA NA NA NA NA NA 1220 NA 1470 <10 NA NA 131 NA 349 NA MW-31C 01/17/2012 5.3 8.63 18 518 0.26 150 355 0.9 NM NA <5 1130 NA NA NA NA NA NA NA 2330 NA 2000 <10 NA NA 136 NA 386 NA MW-31C 10/02/2012 5.1 7.64 23 737 0.69 70 275 9.78 NM <0.5 <5 1120 <0.08 114 NA NA <5 NA <5 2700 <5 1790 <10 NA NA 174 <0.1 407 NA MW-31C 03/13/2013 5.3 8.06 16 679 0.4 131 336 6.15 NM <1 1.55 1030 <1 110 NA NA <5 NA <5 2820 <1 1800 <1 NA NA 150 <0.2 400 NA MW-31C 06/13/2013 5.1 8.20 23 691 0.35 147 352 4.09 NM <1 1.25 985 <1 110 NA NA <5 NA <5 2760 <1 1760 <1 NA NA 150 <0.2 420 NA MW-31C 10/03/2013 5.2 6.27 23 828 0.34 167 372 1.5 NM <1 <1 1020 <1 140 NA NA <5 NA <5 2550 <1 1910 <1 NA NA 150 <0.2 490 NA MW-31C 03/05/2014 5.8 8.42 15 690 2.56 312 517 3.23 NM <1 <1 1030 <1 150 NA NA <5 NA <5 232 <1 220 <1 NA NA 150 <0.2 490 NA MW-31C 06/03/2014 5.2 7.68 24 941 NM 142 347 2.8 NM <1 <1 1410 <1 170 NA NA <5 NA <5 3420 <1 2390 <1 NA NA 150 <0.2 570 NA MW-31C 10/02/2014 5.0 5.46 23 905 0.3 260 465 1.39 NM <1 <1 1200 <1 180 NA NA <5 NA <5 2850 <1 1870 <1 NA NA 150 <0.2 550 NA MW-31C 03/10/2015 5.2 5.70 18 907 0.26 250 455 1.57 NM <1 <1 1190 <1 170 NA NA <5 NA <5 3440 <1 1840 <1 NA NA 160 <0.2 510 NA MW-31C 06/02/2015 5.2 6.59 21 908 0.63 144 349 3.93 3 <1 <1 1130 <1 170 NA NA <1 <1 <1 2960 <1 1640 <1 77.9 648 160 <0.2 540 <0.3 MW-31C 06/05/2015 5.3 5.93 20 877 0.61 82 287 3.83 2.5 <1 <1 1180 <1 170 NA NA <1 1.1 <1 2690 <1 1740 <1 88.1 690 160 <0.2 540 <0.3 MW-31C 11/18/2015 5.2 3.09 20 858 0.8 225 430 7.2 NM <1 1.3 1190 <1 170 NA NA <5 <1 <5 3210 <1 1750 <1 80.5 648 150 <0.2 500 0.426 MW-31C 12/04/2015 5.4 3.45 18 747 2.2 357 562 0.9 ND NA NA NA NA NA 0.044 NA NA NA NA NA NA NA NA NA NA NA NA NA NA MW-31C 01/13/2016 5.3 3.88 16 875 0.56 128 333 1.06 0 <1 <1 1170 <1 160 <0.03 NA <1 <1 <1 2660 <1 1710 <1 78 588 150 <0.2 460 0.323 MW-31C 03/09/2016 5.4 3.99 18 879 0.5 140 345 0.8 2 <1 <1 1250 <1 160 NA NA <5 <1 <5 2740 <1 1840 <1 77.5 619 150 <0.2 480 0.346 MW-31C 06/15/2016 5.4 6.15 22 822 0.35 81 286 3.63 NM <1 <1 1260 <1 160 NA NA <5 2.27 <5 3160 <1 1720 <1 71 587 160 <0.2 460 0.6 MW-32C 06/03/2014 5.5 25.65 22 128 NM 244 449 9.2 NM <1 1.36 248 <1 5.8 NA NA <5 NA <5 424 <1 24 <1 NA NA 24 <0.2 57 NA MW-32C 06/01/2015 5.0 24.64 22 70 3.97 121 326 2.37 NM <1 <1 115 <1 4.2 NA NA <5 <1 <5 30 <1 30 <1 2.77 NA 16 <0.2 31 NA MW-32C 10/13/2015 4.8 20.45 21 48 3.7 258 463 1.69 NM <1 <1 60 <1 3.4 NA NA <5 <1 <5 20 <1 30 <1 2.09 36 13 <0.2 <25 <0.3 MW-32C 03/09/2016 4.8 23.19 20 56 2.58 277 482 0.9 0 <1 <1 84 <1 3.5 NA NA <5 <1 <5 17 <1 31 <1 2.4 46 14 <0.2 39 <0.3 MW-32C 06/15/2016 4.7 24.94 21 71 3.06 314 519 1.36 NM <1 <1 87 <1 3.7 NA NA <5 <1 <5 18 <1 29 <1 2.26 54 19 <0.2 35 <0.3 MW-33C 06/01/2015 4.6 14.61 23 55 1.06 134 339 0.96 NM <1 <1 <50 <1 4.5 NA NA <5 <1 <5 20 <1 30 <1 2.58 NA 12 <0.2 30 NA MW-33C 10/13/2015 5.1 10.30 22 52 0.9 231 436 0.61 NM <1 <1 <50 <1 3.8 NA NA <5 <1 <5 20 <1 24 <1 2.21 34 10 <0.2 27 0.326 MW-33C 03/09/2016 4.9 12.95 20 50 0.76 115 320 0.7 0 <1 <1 <50 <1 3.4 NA NA <5 <1 <5 21 <1 31 <1 2.12 30 10 <0.2 28 0.346 MW-33C 06/15/2016 4.9 14.80 22 57 1.1 297 502 1.07 NM <1 <1 <50 <1 3.8 NA NA <5 <1 <5 25 <1 36 <1 1.99 31 15 <0.2 <25 0.479 MW-34C 05/28/2014 5.9 NM 22 465 0.15 75 NM 7.85 NM <5.3 <6.8 491 <0.76 61.3 NA NA <1.6 NA <2.7 613 <4.7 303 <40 0.0722 311 122 <5.4 339 <2 MW-35C 05/28/2014 6.9 NM 23 620 0.54 66 NM 81.3 NM <5.3 <6.8 412 <0.76 58.4 NA NA <30 NA <20 2810 <4.7 345 55 0.0894 299 131 <5.4 419 <10 MW-36C 05/21/2014 6.3 NM 21 5 0.23 71 NM 9.44 NM <5.3 <6.8 522 <0.76 54.8 NA NA <30 NA NA 877 <4.7 558 <40 0.0616 324 117 <5.4 327 <10 MW-36C 09/23/2015 5.2 9.05 21 844 0.49 112 317 1.58 NM <1 <1 525 <1 NA NA NA <1 18 <1 76 <1 379 42.7 42.8 281 NA 0.226 NA 0.607 MW-36C 12/04/2015 5.4 7.37 19 449 0.16 250 455 36.9 0 <1 <1 522 <1 51 <0.03 NA 2.38 22.3 1.1 1520 1.32 378 42 43.2 329 110 0.566 240 4.59 MW-36C DUP 12/04/2015 5.4 7.37 19 449 0.16 250 455 36.9 0 <1 <1 528 <1 51 <0.03 NA 2.42 22.5 1.28 1420 1.27 378 43.4 43.2 332 120 0.362 250 4.35 MW-36C 01/13/2016 5.7 7.43 18 477 0.09 217 422 13.7 0 <1 <1 529 <1 60 <0.03 NA 1.24 17.2 <1 965 <1 306 49.1 52.6 388 130 <0.2 320 2.82 MW-38C 06/16/2016 6.0 6.03 22 442 0.16 190 395 9.19 0 <1 <1 384 <1 68 0.27 NA <1 3.58 <1 445 <1 676 21.8 50.5 134 86 <0.2 250 1.18 B2 MW-39C 06/22/2016 5.8 12.39 21 13 0.3 6 211 3.08 NM <1 1.3 <50 <1 5.6 <1.5 NA 1.12 2.93 <1 7330 <1 128 <1 3.42 20 10 <0.2 49 1.61 MW-40C 06/17/2016 5.6 4.52 23 487 0.22 137 342 1.59 0 <1 <1 557 <1 59 <0.03 NA <1 8.39 <1 86 <1 191 26.6 45.4 353 120 0.228 280 <0.3 SMW-1C 04/27/2015 5.7 3.95 20 558 0.2 -85 120 3.8 3.2 <1 <1 783 <1 60 NA NA <1 5.33 <1 9170 <1 852 <1 42.4 467 140 <0.2 330 0.337 SMW-1C 06/05/2015 5.5 2.90 21 561 0.44 106 311 6.81 3.5 <1 <1 776 <1 66 NA NA <1 <1 <1 4250 <1 807 <1 45.2 488 140 <0.2 340 0.402 SMW-1C 09/23/2015 5.0 3.30 22 525 0.5 76 281 2.48 NM <1 <1 742 <1 NA NA NA <1 2.52 <1 592 <1 750 <1 41.7 449 NA <0.2 NA 1.23 SMW-1C 12/03/2015 5.0 0.60 18 457 0.2 -9 196 7.9 0.25 <1 <1 674 <1 55 <0.03 NA <1 2.51 <1 532 <1 705 <1 38.4 400 140 <0.2 280 1.26 SMW-1C 01/13/2016 4.8 1.23 16 452 0.4 114 319 1.1 0.5 <1 <1 706 <1 49 <0.03 NA <1 2.58 <1 232 <1 658 <1 35.2 377 140 <0.2 270 1.02 SMW-2C 03/26/2015 6.4 10.31 20 319 0.2 -440 -235 33.9 4.5 <1 <1 338 <1 28 NA NA 1.08 93.1 <1 19200 <1 1970 <1 18.6 220 72 <0.2 180 0.828 SMW-2C 06/04/2015 5.7 9.70 21 215 0.35 56 261 4.34 5.5 <1 <1 337 <1 23 NA NA <1 3.37 <1 5370 <1 539 <1 15.5 221 49 <0.2 130 <0.3 SMW-2C 12/03/2015 5.9 7.40 19 196 0.7 -101 104 1.9 0.5 <1 <1 402 <1 34 <0.03 NA 1.05 11.8 <1 558 <1 280 <1 22.5 291 72 <0.2 170 0.819 SMW-2C 01/13/2016 5.2 8.27 18 173 0.3 151 356 2.1 0 <1 <1 225 <1 18 <0.03 NA <1 12.3 <1 302 <1 326 <1 10.5 154 66 <0.2 130 0.658 SMW-3C 04/27/2015 5.2 8.90 20 366 0.27 47 252 4.98 1.5 <1 <1 465 <1 39 NA NA <1 15.4 <1 2420 <1 719 <1 25.6 235 94 <0.2 220 0.632 SMW-3C 06/04/2015 4.9 7.66 21 333 0.45 54 259 2.27 1 <1 <1 417 <1 35 NA 0.012 <1 9.21 <1 1510 <1 584 <1 22.5 218 93 <0.2 190 <0.3 SMW-4C 04/28/2015 7.0 5.05 17 251 0.24 -260 -55 52 2.5 <1 1.09 103 <1 18 NA NA 1.03 <1 <1 4990 1.29 220 <1 39.4 56 30 <0.2 210 0.825 SMW-4C 06/05/2015 6.6 4.33 21 203 0.3 -130 75 8.61 3.5 <1 2.56 85 <1 18 NA NA <1 <1 <1 9660 <1 132 <1 22.1 54 16 <0.2 110 0.803 SMW-5C 04/28/2015 6.0 6.02 18 226 0.56 -33 173 2.61 1.5 <1 <1 347 <1 28 NA NA <1 11.4 <1 1890 <1 350 <1 16.4 240 46 <0.2 130 <0.3 SMW-5C 06/05/2015 4.9 5.06 22 230 1.57 239 444 1.86 0 <1 <1 362 <1 33 NA NA <1 2.6 <1 175 <1 130 <1 18 228 53 <0.2 120 <0.3 SMW-5C 01/14/2016 5.0 2.98 17 216 1.51 113 318 0.36 0 <1 <1 345 <1 31 <0.03 NA <1 1.25 <1 164 <1 80 <1 16.1 241 48 <0.2 120 <0.3 SMW-6C 04/29/2015 5.6 6.35 18 216 0.2 11 216 7.51 2.8 <1 4.28 192 <1 19 NA NA <1 7.92 <1 4480 <1 322 <1 11.7 134 43 <0.2 130 0.388 SMW-6C 06/04/2015 5.0 5.21 21 194 0.48 -8 197 2.1 1 <1 2.79 197 <1 20 NA 0.012 <1 3.65 <1 1320 <1 273 <1 11.6 132 40 <0.2 110 <0.3 SMW-6C 01/14/2016 5.4 3.33 16 268 0.3 43 248 1.8 1 <1 1.24 298 <1 34 <0.03 NA <1 6.5 <1 500 <1 370 <1 18.2 178 70 <0.2 150 1.43 TABLE 1-3 LOWER SURFICIAL GROUNDWATER EXCEEDANCES L.V. SUTTON ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, WILMINGTON, NC P:\Duke Energy Progress.1026\108. Sutton Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 1-3 Lower Surficial Groundwater Exceedances.xlsx Page 10 of 10 pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Boron Cadmium Chloride Chromium (VI) Chromium (VI) Speciation Chromium Cobalt Copper Iron Lead Manganese Selenium Sodium Strontium Sulfate Thallium Total Dissolved Solids Vanadium S.U.ft Deg C umhos /cm mg/L mV mV NTUs mg/L ug/L ug/L ug/L ug/L mg/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L mg/L ug/L mg/L ug/L mg/L ug/L 6.5-8.5 NE NE NE NE NE NE NE NE 1*10 700 2 250 0.07^0.07^10 1*1000 300 15 50 20 NE NE 250 0.2*500 0.3* Sample ID Sample Collection Date 15A NCAC 02L Standard Reporting Units Analytical Parameter Field Parameters Analytical Results S-1 New Well (Duke)02/04/2015 NM NM NM NM NM NM NM NM NM <1 <1 <50 <1 7.6 NA NA <5 <1 <5 70 3.92 24 <1 4.7 27 11 <0.2 35 <0.3 S-1 New Well (Vendor)02/04/2015 6.8 NM 17 63 9.22 NM NM <1 NM <1 <5 24 <2 8.02 <100 NA <5 <1 <3 70 4 23 <5 4.49 25 10.1 <0.2 37.5 <3 S-1 Old Well (Duke)02/04/2015 NM NM NM NM NM NM NM NM NM <1 <1 <50 <1 4.6 NA NA <5 <1 <5 52 <1 27 <1 2.98 17 12 <0.2 28 <0.3 S-1 Old Well (Vendor)02/04/2015 5.6 NM 19 53 6.24 NM NM <1 NM <1 <5 15 <2 4.87 <100 NA <5 <1 3 58 <3 25 <5 2.9 16 9.67 <0.2 32 3 S-2 Pumphouse (Duke)03/05/2015 NM NM NM NM NM NM NM NM NM <1 <1 607 <1 24 NA NA <5 2.04 8 28 <1 302 1.71 16.8 378 72 <0.2 170 <0.3 S-2 Pumphouse (Vendor)03/05/2015 5.4 NM 22 263 5.8 NM NM 0.5 NM <1 <1 690 <1 25 <20 NA <1 2 3 24 <1 295 <10 18.3 365 69 <1 159 <1 S-2 Well 1 & 2 (Duke)03/05/2015 NM NM NM NM NM NM NM NM NM <1 <1 166 <1 25 NA NA <5 1.56 <5 529 <1 292 <1 23.2 254 160 <0.2 350 <0.3 S-2 Well 1 & 2 (Vendor)03/05/2015 6.0 NM 19 506 6.6 NM NM 5.3 NM <1 <1 160 <1 25 <20 NA <1 2 4 635 <1 278 <10 24.1 287 160 <1 326 <1 S-3 (Duke)03/02/2015 NM NM NM NM NM NM NM NM NM <1 <1 562 <1 28 NA NA <5 2.27 <5 182 <1 283 2.26 19.6 323 82 <0.2 180 <0.3 S-3 (Vendor)03/02/2015 6.4 NM 20 291 5.09 NM NM 0.5 NM <1 <1 600 <1 20 <20 NA <1 2 1 189 <1 274 <10 20.2 302 76 <1 185 <1 S-4 (Duke)03/11/2015 NM NM NM NM NM NM NM NM NM <1 <1 190 <1 13 NA NA <5 <1 209 254 4.64 25 <1 9.88 100 43 <0.2 89 <0.3 S-4 (Vendor)03/11/2015 5.6 NM 17 194 5 NM NM 1.3 NM <1 <1 180 <1 13 <20 NA <1 <1 218 318 5 23 <10 10.4 93 41 <1 125 <1 S-6 (Duke)02/04/2015 NM NM NM NM NM NM NM NM NM <1 <1 <50 <1 2.8 NA NA <5 <1 <5 16 <1 29 <1 1.86 20 14 <0.2 <25 <0.3 S-6 (Vendor)02/04/2015 5.1 NM 19 47 6.61 NM NM <1 NM <1 <5 12 <2 2.95 <100 NA <5 <1 <3 <20 <3 28 <5 1.78 20 8.91 <0.2 25.5 <3 S-7 (Duke)02/25/2015 NM NM NM NM NM NM NM NM NM <1 <1 <50 <1 4.3 NA NA <5 <1 <5 <10 <1 18 <1 2.98 26 12 <0.2 61 <0.3 S-7 (Vendor)02/25/2015 5.6 NM 19 96 4.52 NM NM <1 NM <1 <5 20.7 <2 4.41 <100 NA <5 <1 <3 <20 <3 18.4 <5 2.9 26.7 11.9 <0.2 63 <0.3 S-8 Well 1 (Duke)03/05/2015 NM NM NM NM NM NM NM NM NM <1 1.26 <50 <1 4.2 NA NA <5 3.21 6 2200 <1 80 <1 2.89 17 7 <0.2 36 <0.3 S-8 Well 1 (Vendor)03/05/2015 5.9 NM 22 54 5.8 NM NM 0.6 NM <1 2 20 <1 <5 <20 NA <1 3 5 1940 <1 74 <1 2.82 16 <15 <1 30 <1 S-8 Well 1 (Vendor)05/27/2015 5.9 NM 22 55 5.73 NM NM <1 NM <1 <5 17 <2 3.39 <20 NA <5 3 <3 1950 <3 68 <5 2.13 14 5.84 <0.2 20.7 <0.3 S-8 Well 1 Post Filter (Vendor)05/27/2015 5.8 NM 28 61 6.98 NM NM <1 NM <1 <5 19 <2 3.31 <20 NA <5 3 <3 2070 <3 68 <5 2.09 14 5.33 <0.2 24 <0.3 S-8 Well 2 (Duke)03/05/2015 NM NM NM NM NM NM NM NM NM <1 <1 224 <1 19 NA NA <5 3.59 10 51 <1 148 <1 11.3 139 35 <0.2 96 <0.3 S-8 Well 2 (Vendor)03/05/2015 5.2 NM 19 156 4.1 NM NM 0.2 NM <1 <1 250 <1 19 <20 NA <1 4 8 120 <1 142 <1 11.8 133 33 <1 85 <1 S-8 Well 2 (Vendor)05/27/2015 5.3 NM 22 156 7.85 NM NM <1 NM <1 <5 210 <2 18.2 <20 NA <5 4 <3 94 <3 159 <5 11.5 141 34.6 <0.2 77.3 <0.3 S-12 (Duke)03/18/2015 NM NM NM NM NM NM NM NM NM <1 <1 <50 <1 5.5 NA NA <5 <1 <5 272 <1 75 <1 3.12 70 29 <0.2 94 <0.3 S-12 (Vendor)03/18/2015 6.8 NM 17 178 8.45 NM NM 1.37 NM <1 <5 34 <2 5.29 <100 NA <5 <1 <3 254 <3 66 <5 3.08 70 28 <0.2 104 <0.3 S-17 (Duke)04/30/2015 NM NM NM NM NM NM NM NM NM <1 <1 66 <1 7.1 NA NA <5 <1 35 80 <1 65 <1 5.4 39 26 <0.2 48 <0.3 S-17 (Vendor)04/30/2015 NM NM NM NM 8.4 NM NM <1 NM <1 <0.001 62 <1 15.2 NA NA <1 <0.001 33 33 <0.003 69 <0.01 6.35 45 23 <0.001 75 <0.005 S-18 (Duke)05/19/2015 NM NM NM NM NM NM NM NM NM <1 <1 <50 <1 3.8 NA NA <5 <1 <5 <10 <1 19 <1 3.02 31 15 <0.2 53 0.537 S-18 (Vendor)05/19/2015 6.3 NM 24 100 6.6 NM NM <1 NM <1 <5 26 <2 4.05 <20 NA <5 <1 <3 30 <3 18 <5 3.03 29 16.1 <0.2 59.5 1.2 Prepared by: BER Checked by: PBW Notes: ug/L = microgram per liter NTU = nephelometric turbidity unit mg/L = milligrams per liter Eh = Redox potential S.U. = Standard Unit mV = millivolts NE = Not Established umhos/cm = micro mhos per centimeter Deg C = Degree Celsius DUP = Duplicate DO = Dissolved Oxygen ft = feet Spec Cond = Specific Conductance ORP = Oxidation Reduction Potential ND = Not Detected Temp = Temperature NM = Not Measured NA = Not Analyzed < = concentration not detected at or above the reporting limit. ^ = NC DHHS Health Screening Level * = Interim Maximum Allowable Concentrations (IMACs) of the 15A NCAC 02L Standard, Appendix 1, April, 1, 2013. b = Target analyte detected in method blank at or above the reporting limit. D3 = Sample was diluted due to the presence of high levels of non-target analytes or other matrix interference. M1 = Matrix spike recovery exceeds QC limits. B2 = Target analyte was detected in blank(s) at a concentration greater than 1/2 the reporting limit but less than the reporting limit. - Bold highlighted concentration indicates exceedance of the 15A NCAC 02L Standard, Appendix 2, April 1, 2013. Water Supply Wells TABLE 1-4 UPPER PEE DEE GROUNDWATER EXCEEDANCES L.V. SUTTON ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, WILMINGTON, NC P:\Duke Energy Progress.1026\108. Sutton Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 1-4 Upper Pee Dee Groundwater Exceedances.xlsx Page 1 of 2 pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Boron Cadmium Chloride Chromium (VI) Chromium (VI) Speciation Iron Manganese Sodium Strontium Total Dissolved Solids Vanadium S.U.ft Deg C umhos /cm mg/L mV mV NTUs mg/L ug/L ug/L ug/L mg/L ug/L ug/L ug/L ug/L mg/L ug/L mg/L ug/L 6.5-8.5 NE NE NE NE NE NE NE NE 1*700 2 250 0.07^0.07^300 50 NE NE 500 0.3* Sample ID Sample Collection Date MW-5CD 06/16/2016 8.5 4.68 26 1447 0.59 5 210 1.71 0 <1 1150 <1 270 0.033 NA 51 6 264 125 840 1.88 B2 MW-5D 06/16/2016 8.2 4.33 27 3117 0.41 -48 157 3.83 0 <1 3010 <1 680 0.064 NA 136 11 584 M4 232 1700 1.24 B2 MW-37CD 06/23/2016 9.5 16.18 23 204 0.3 -74 131 37 NM <1 <50 <1 6.5 <0.03 NA 503 11 15.1 77 180 3.86 MW-37D 06/23/2016 8.6 16.06 22 356 0.4 -104 101 27.5 NM <1 146 <1 46 <0.03 NA 1550 23 58 90 340 1.39 ABMW-1D 04/28/2015 7.8 37.96 23 478 0.12 -175 30 9 0 <1 166 <1 51 NA NA 227 40 54.9 155 320 0.676 ABMW-1D 06/17/2015 7.8 37.38 27 505 0.56 116 321 6.91 0.2 <1 167 <1 53 NA 0.005 475 82 59.5 179 350 0.642 AW-2D 05/18/2015 7.9 18.80 25 916 0.62 52 257 6 0 <1 652 <1 140 NA NA 316 27 166 101 500 0.908 AW-2D 06/03/2015 8.0 18.70 23 965 1.06 177 382 5.14 <0.5 <1 666 <1 160 NA 0.017 438 59 172 107 510 <0.3 AW-5D 05/18/2015 8.2 15.69 24 596 0.66 -161 44 12.3 0 <1 296 <1 90 NA NA 454 30 96.9 88 340 0.91 AW-5D 06/04/2015 8.4 15.90 22 612 0.23 -89 116 12.4 0 <1 306 <1 96 NA 0.023 298 38 97.7 87 330 <0.3 AW-5D 12/03/2015 8.7 13.58 19 566 0.11 -220 -15 11.83 0 <1 269 <1 85 0.043 NA 380 30 90.8 83 290 0.893 AW-5D 01/13/2016 9.1 14.25 17 627 0.5 -190 16 2.3 0 <1 334 <1 120 <0.03 NA 82 40 105 84 340 <0.3 AW-6D 02/05/2015 8.6 8.85 18 1194 0.24 -515 -310 15.4 0 <1 930 <1 170 NA NA 329 17 248 74 660 0.58 AW-6D 03/24/2015 8.4 9.27 22 1240 0.39 -97 108 23.3 0 <1 976 <1 200 NA NA 250 16 251 75 600 0.588 AW-6D 06/03/2015 8.2 9.25 23 1208 0.9 107 312 4.75 NM <1 980 <1 190 NA 0.022 102 18 239 82 720 <0.3 AW-6D 12/03/2015 8.1 6.50 17 1127 0.17 -290 -85 9.6 0 <1 990 <1 180 <0.03 NA 558 23 243 86 650 0.924 AW-6D 01/13/2016 8.2 7.16 11 1134 0.5 -273 -68 8.39 0 <1 880 <1 180 <0.03 NA 743 21 220 81 660 1.12 AW-7D 03/25/2015 8.0 6.01 19 929 0.28 -160 45 10.3 0 <1 801 <1 130 NA NA 126 10 172 86 520 1.28 AW-7D 06/05/2015 10.0 6.00 19 872 0.32 -300 -95 4.58 <0.5 <1 815 <1 120 NA NA 220 14 171 89 510 0.992 AW-7D 09/22/2015 8.1 4.89 24 907 0.3 -216 -11 5.92 NM <1 794 <1 NA NA NA 225 17 176 M4 82 NA 0.785 AW-7D 12/04/2015 8.1 3.45 17 839 0.3 -248 -43 7.8 ND <1 792 <1 120 <0.03 NA 94 13 126 82 490 0.767 AW-7D 01/13/2016 8.2 3.95 12 879 0.24 -306 -101 0.85 0 <1 772 <1 120 <0.03 NA 110 13 171 79 480 0.71 AW-9D 05/19/2015 9.0 13.51 20 1208 0.75 -122 83 7.93 0 <1 577 <1 210 NA NA 393 34 209 133 610 0.362 AW-9D 06/04/2015 8.2 8.25 22 1140 1.06 179 384 4.7 <0.5 <1 581 <1 220 NA 0.033 194 40 207 133 630 <0.3 AW-9D 09/23/2015 8.0 9.11 23 1144 0.4 -172 33 6.42 NM <1 570 <1 NA NA NA 479 49 176 127 NA 0.69 AW-9D 12/03/2015 8.1 7.43 19 1223 0.5 -48 158 5.2 0 <1 625 <1 240 NA NA 354 55 212 129 630 0.307 AW-9D 01/13/2016 8.2 7.78 16 1188 0.44 -170 35 4.47 0 <1 626 <1 250 <0.03 NA 277 47 204 127 640 <0.3 MW-23D 06/16/2016 8.5 7.20 25 1016 0.36 -187 18 3.7 NM <1 886 <1 160 <0.03 NA 145 17 190 93 560 0.423 B2 Analytical Parameter Field Parameters Analytical Results Background Pee Dee Upper 15A NCAC 02L Standard Reporting Units TABLE 1-4 UPPER PEE DEE GROUNDWATER EXCEEDANCES L.V. SUTTON ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, WILMINGTON, NC P:\Duke Energy Progress.1026\108. Sutton Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 1-4 Upper Pee Dee Groundwater Exceedances.xlsx Page 2 of 2 pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Boron Cadmium Chloride Chromium (VI) Chromium (VI) Speciation Iron Manganese Sodium Strontium Total Dissolved Solids Vanadium S.U.ft Deg C umhos /cm mg/L mV mV NTUs mg/L ug/L ug/L ug/L mg/L ug/L ug/L ug/L ug/L mg/L ug/L mg/L ug/L 6.5-8.5 NE NE NE NE NE NE NE NE 1*700 2 250 0.07^0.07^300 50 NE NE 500 0.3* Sample ID Sample Collection Date Analytical Parameter Field Parameters Analytical Results 15A NCAC 02L Standard Reporting Units MW-38D 06/16/2016 8.3 6.05 24 2380 0.33 -103 102 3.84 0 <1 1630 <1 480 <0.03 NA 79 14 432 192 1300 0.723 B2 MW-39D 06/22/2016 7.9 12.36 23 1918 0.5 -111 94 1.65 NM <1 1080 <1 380 <0.03 NA 216 43 355 182 1000 <0.3 MW-40D 06/17/2016 7.8 4.52 22 1897 0.4 -207 -2 1.15 0 <1 1210 <1 370 <0.03 NA 169 24 337 163 1000 <0.3 PZ-6D 12/04/2015 7.8 18.39 15 889 1.18 198 403 12.7 0 <1 670 <1 160 0.04 NA 956 65 159 125 500 1.72 PZ-6D 01/14/2016 7.9 18.53 18 1076 0.4 142 347 6.43 0 <1 784 <1 180 <0.03 NA 567 68 187 125 120 0.875 PZ-10D 06/11/2015 7.7 15.30 20 727 0.22 -174 31 3.06 NM <1 368 <1 120 NA NA 347 53 114 109 380 0.397 PZ-10D 12/04/2015 7.7 14.31 18 860 0.41 -152 53 6.62 0 <1 449 <1 150 <0.03 NA 570 50 140 114 390 0.511 PZ-10D 01/14/2016 7.8 14.39 17 1092 0.51 -122 83 2.56 0.5 <1 548 <1 170 <0.03 M1 NA 606 53 168 131 570 0.725 PZ-23D 10/03/2014 7.9 3.64 22 153 0.68 107 312 25.1 NM <1 <50 63.2 4.6 NA NA 647 60 NA NA 120 NA SMW-6D 04/29/2015 8.6 6.64 18 1254 0.5 -250 -45 23.3 0 1.37 982 <1 180 NA NA 836 24 243 79 710 1.96 SMW-6D 06/03/2015 9.8 4.94 21 1195 0.38 -332 -127 9.67 <0.5 <1 990 <1 190 NA 0.072 300 37 260 85 670 1.61 SMW-6D 01/14/2016 8.3 3.36 11 1447 0.5 -202 3 5.2 0 <1 1030 <1 190 0.037 NA 499 83 280 107 760 1.57 Prepared By: BER Checked By: PBW Notes: - Bold highlighted concentration indicates exceedance of the 15A NCAC 02L Standard, Appendix 2, April 1, 2013. Spec Cond = Specific Conductance Deg C = Degrees Celsius ND = Not detected Eh = Redox Potential S.U. = Standard Unit ug/L = Microgram per liter NE = Not established umhos/cm = Micro mhos per centimeter ft = Feet mg/L = Milligram per liter DO = Dissolved oxygen ORP = Oxidation Reduction Potential NA = Not analyzed mV = Millivolts Temp = Temperature NM = Not measured NTU = Nephelometric turbidity unit < = Concentration not detected at or above the reporting limit ^ = NC DHHS Health Screening Level * = Interim Maximum Allowable Concentrations (IMACs) of the 15A NCAC 02L Standard, Appendix 1, April 1, 2013. B2 = Target analyte was detected in blank(s) at a concentration greater than 1/2 the reporting limit but less than the reporting limit. Analyte concentration in sample is valid and may be used for compliance purposes. M1 = Matrix spike recovery was high: the associated Laboratory Control Spike (LCS) was acceptable. M4 = The spike recovery value was unusable since the analyte concentration in the sample was disproportionate to the spike level. TABLE 1-5 LOWER PEE DEE GROUNDWATER EXCEEDANCES L.V. SUTTON ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, WILMINGTON, NC P:\Duke Energy Progress.1026\108. Sutton Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 1-5 Lower Pee Dee Groundwater Exceedances.xlsx Page 1 of 1 pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Boron Chloride Chromium (VI) Chromium (VI) Speciation Chromium Iron Sodium Strontium Total Dissolved Solids Vanadium S.U.ft Deg C umhos /cm mg/L mV mV NTUs mg/L ug/L ug/L mg/L ug/L ug/L ug/L ug/L mg/L ug/L mg/L ug/L 6.5-8.5 NE NE NE NE NE NE NE NE 1*700 250 0.07^0.07^10 300 NE NE 500 0.3* Sample ID Sample Collection Date MW-5E 07/07/2016 12.5 110.95 23 5295 4.72 -175 30 141 0 5.38 1420 460 0.28 NA 29.9 237 477 M4 2600 1900 1.05 MW-37E 07/07/2016 9.4 85.51 22 1944 1.42 -126 79 21.7 0 <1 1370 370 0.059 NA 3.96 239 368 235 1100 0.528 AW-5E 05/19/2015 9.2 17.55 26 2822 0.94 -120 85 20.5 0 <1 1900 520 NA NA 1.61 652 561 221 1500 0.63 AW-5E 06/03/2015 8.7 15.80 23 2766 0.92 -82 123 19.3 0 <1 1950 540 NA 0.027 <1 276 540 211 1500 <0.3 AW-5E 12/04/2015 9.2 14.92 16 2767 0.26 -252 -47 2.07 0 <1 1910 570 0.16 NA 1.22 52 567 164 1500 <0.3 AW-5E 01/13/2016 9.5 14.00 12 2737 1 -248 -43 3.9 0 <1 1830 580 0.077 NA 1.78 102 541 157 1500 <0.3 AW-6E 06/11/2015 8.1 66.00 29 2648 0.7 1 206 20.5 NM <1 2470 490 NA 0.064 14.7 704 536 174 1500 1.77 AW-6E 12/03/2015 8.8 5.32 17 2671 0.64 107 312 6.71 NM <1 2430 500 <0.03 NA <1 99 524 156 1500 0.583 AW-6E 01/13/2016 9.1 7.10 12 2651 1.06 -154 51 0.66 0 <1 2420 520 <0.03 NA <1 55 526 150 1500 0.403 MW-23E 06/03/2015 10.0 5.00 21 2627 0.68 -173 32 4.37 <0.5 <1 2500 500 NA 0.047 <1 48 519 92 1500 0.993 MW-23E 09/22/2015 9.5 4.23 26 2748 0.4 -105 100 7.23 NM <1 2420 NA NA NA <1 251 503 114 NA 0.864 MW-23E 12/04/2015 9.4 3.19 15 2690 0.7 -202 3 0.69 0 NA NA NA 0.11 NA NA NA NA NA NA NA Prepared by: BER Checked by: PBW Notes: - Bold highlighted concentration indicates exceedance of the 15A NCAC 02L Standard, Appendix 2, April 1, 2013. Spec Cond = Specific Conductance Deg C = Degrees Celsius NM = Not measured Eh = Redox Potential S.U. = Standard Unit ug/L = Microgram per liter NE = Not established umhos/cm = Micro mhos per centimeter ft = Feet mg/L = Milligram per liter DO = Dissolved oxygen ORP = Oxidation Reduction Potential NA = Not analyzed mV = Millivolts Temp = Temperature NTU = Nephelometric turbidity unit < = Concentration not detected at or above the reporting limit ^ = NC DHHS Health Screening Level * = Interim Maximum Allowable Concentrations (IMACs) of the 15A NCAC 02L Standard, Appendix 1, April 1, 2013. M4 = The spike recovery value was unusable since the analyte concentration in the sample was disproportionate to the spike level. Analytical Parameter Analytical Results Background Pee Dee Lower Field Parameters 15A NCAC 02L Standard Reporting Units TABLE 1-6 WATER ELEVATION DATA - JULY 27, 2016 L.V. SUTTON ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, WILMINGTON, NC ID Northing (Feet) Easting (Feet) Measuring Point TOC Elevation (Feet-MSL) July 2016 Water Level (Feet - TOC) Ground Surface Elevation (Feet-MSL) Water Elevation (Feet, MSL) Ash Basin ABMW-02D 197177.19 2305583.43 12.71 5.68 10.10 7.03 ABMW-02S 197177.71 2305589.13 12.82 5.73 9.98 7.09 Compliance Wells MW-05C 205901.75 2303862.83 13.32 4.61 13.00 8.71 MW-37B 193820.03 2308956.68 23.71 16.59 20.88 7.12 MW-37C 193819.39 2308959.44 23.72 16.59 20.94 7.13 MW-04B 194232.85 2308900.30 17.10 10.19 15.91 6.91 MW-07C 196599.00 2307569.14 15.98 8.11 15.74 7.87 MW-12 199644.36 2307510.35 NA 11.70 NA NA MW-19 197831.75 2307042.61 30.28 21.22 28.73 9.06 MW-21C 197773.24 2306913.33 30.14 21.08 27.64 9.06 MW-22B 198349.20 2307017.22 19.20 9.66 16.59 9.54 MW-22C 198349.58 2307023.80 19.26 9.70 16.74 9.56 MW-23B 198967.48 2306901.58 16.26 6.23 14.20 10.03 MW-23C 198972.43 2306903.62 16.77 6.71 14.17 10.06 MW-24B 200712.44 2306251.22 15.38 5.19 12.62 10.19 MW-24C 200716.51 2306263.95 15.01 4.68 12.47 10.33 MW-27B 202583.30 2304678.40 14.34 4.64 UNK 9.70 MW-28B 197368.42 2307360.26 31.85 22.95 28.63 8.90 MW-28C 197356.57 2307354.01 31.05 22.18 28.17 8.87 MW-31C 201047.15 2306858.44 17.63 7.98 14.96 9.65 MW-32C 197686.00 2307878.15 34.91 25.45 33.48 9.46 MW-33C 197599.01 2308275.12 24.58 15.42 22.28 9.16 Data Gap Wells MW-05CD 205868.20 2303794.14 NA 6.90 NA NA MW-05D 205871.90 2303800.14 NA 7.10 NA NA MW-05E 205871.93 2303803.16 NA 7.14 NA NA MW-23D 198966.71 2306927.13 NA 7.89 NA NA MW-37CD 193808.85 2308998.14 NA 16.59 NA NA MW-37D 193812.39 2308989.04 NA 16.55 NA NA MW-37E 193815.94 2308979.94 NA 16.61 NA NA MW-38B 202963.06 2304436.71 NA 6.38 NA NA MW-38C 202955.78 2304436.78 NA 6.51 NA NA MW-38D 202948.50 2304436.86 NA 6.59 NA NA MW-39B 202605.27 2303609.74 NA 12.85 NA NA MW-39C 202601.57 2303603.73 NA 12.55 NA NA MW-39D 202597.90 2303600.75 NA 12.50 NA NA MW-40B 202121.73 2304378.80 NA 4.75 NA NA MW-40C 202121.79 2304384.84 NA 4.80 NA NA MW-40D 202118.21 2304390.92 NA 4.79 NA NA Previously Installed Wells AW-01B 203061.52 2306091.45 NA 7.60 20.43 NA AW-01C 203064.29 2306090.62 NA 7.60 20.49 NA AW-02B 202156.54 2306450.34 NA 16.34 25.5 NA AW-02C 202160.6 2306445.87 NA 16.10 23.98 NA AW-02D 202147.24 2306457.8 NA 16.13 25.9 NA AW-03B 201583.47 2306678.65 NA 10.64 19.87 NA AW-03C 201584.9 2306673.75 NA 10.91 20.07 NA AW-04B 198803.16 2307818.22 NA 10.07 19.38 NA P:\Duke Energy Progress.1026\108. Sutton Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 1-6 Water Elevation Data - July 27, 2016 v2.xlsx Page 1 of 2 TABLE 1-6 WATER ELEVATION DATA - JULY 27, 2016 L.V. SUTTON ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, WILMINGTON, NC ID Northing (Feet) Easting (Feet) Measuring Point TOC Elevation (Feet-MSL) July 2016 Water Level (Feet - TOC) Ground Surface Elevation (Feet-MSL) Water Elevation (Feet, MSL) AW-04C 198813.04 2307820.8 NA 8.99 19.69 NA AW-05B 198021.26 2308134.95 NA 17.32 23.70 NA AW-05C 198024.46 2308133.35 NA 17.40 23.69 NA AW-05D 198024.76 2308125.18 NA 16.96 23.78 NA AW-05E 198018.09 2308127.63 NA 16.74 23.50 NA AW-06B 199639.86 2307503.90 NA 12.08 22.46 NA AW-06D 199642.41 2307502.89 NA 11.92 22.47 NA AW-06E 199648.76 2307507.43 NA 11.90 22.35 NA AW-07D 201037.19 2306853.91 17.65 8.01 14.80 9.64 AW-08B 203420.00 2304212.85 16.43 7.13 13.47 9.30 AW-08C 203419.38 2304205.34 16.52 7.19 13.40 9.33 AW-09B 196083.31 2307795.83 17.46 10.93 14.13 6.53 AW-09C 196081.45 2307793.85 17.36 10.98 14.26 6.38 AW-09D 196076.31 2307788.10 17.28 10.80 14.59 6.48 MW-23E 198979.66 2306894.64 16.56 6.63 13.79 9.93 SMW-01B 199292.01 2308712.96 13.87 4.51 13.91 9.36 SMW-01C 199295.12 2308717.75 13.90 4.43 13.99 9.47 SMW-02B 198396.18 2308908.42 20.59 11.26 17.38 9.33 SMW-02C 198403.45 2308904.84 20.66 11.16 17.50 9.50 SMW-04B 202569.12 2307663.93 16.34 5.68 13.03 10.66 SMW-04C 202565.07 2307665.57 15.67 5.06 12.69 10.61 SMW-05B 201027.58 2308551.36 16.43 7.11 13.63 9.32 SMW-05C 201027.18 2308554.63 16.33 6.81 13.49 9.52 SMW-06B 200222.83 2309008.69 15.86 6.54 13.87 9.32 SMW-06C 200222.29 2309012.80 16.05 6.78 13.03 9.27 SMW-06D 200221.20 2309017.66 16.37 6.81 12.80 9.56 MW-04 194238.17 2308898.63 16.18 8.93 15.67 7.25 MW-04A 194244.91 2308896.94 15.61 8.43 15.51 7.18 MW-05A 205923.44 2303854.09 12.56 3.80 11.97 8.76 MW-05B 205913.11 2303859.22 13.56 4.83 12.52 8.73 MW-07B 196603.05 2307572.21 16.59 8.63 15.63 7.96 MW-09 204973.42 2305308.13 26.49 16.39 23.25 10.10 MW-13 197948.14 2305008.16 18.21 8.54 15.09 9.67 MW-13D 197965.38 2305017.45 18.16 8.81 15.53 9.35 MW-14 197252.17 2306178.43 14.15 5.33 10.96 8.82 MW-15 196475.65 2306044.01 11.47 4.62 8.53 6.85 MW-15D 196476.98 2306061.06 11.21 4.43 8.61 6.78 MW-16 19697593.00 2306753.16 16.91 8.75 14.11 8.16 MW-16D 196962.70 2306758.11 16.43 7.40 14.00 9.03 MW-20 196257.98 2305318.00 13.70 9.31 10.78 4.39 MW-20D 1962556.89 2305326.09 13.66 9.37 10.73 4.29 MW-27C 202583.80 2304674.50 14.72 5.01 11.50 9.71 MW-28T 197369.96 2307352.75 32.22 23.32 29.33 8.90 MW-31B 201044.81 2306851.38 17.53 7.87 15.02 9.66 PZ-06D 204198.64 2305619.96 NA 17.90 NA NA PZ-06S 204190.02 2305617.93 NA 17.33 NA NA Prepared by: WJW Checked by: PBW Notes: BGS = Below ground surface UNK = Unknown MSL = Mean sea level 1 = Well depths initially measured by SynTerra June 15, 2015 and updated as new wells are installed. 2 = "Total Well Depth" is the depth to the bottom of the filter pack. 3 = Values measured during well installation NA = Updated survey data not available P:\Duke Energy Progress.1026\108. Sutton Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 1-6 Water Elevation Data - July 27, 2016 v2.xlsx Page 2 of 2 TABLE 1-7 VERTICAL GROUNDWATER GRADIENTS L.V. SUTTON ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, WILMINGTON, NC P:\Duke Energy Progress.1026\108. Sutton Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 1-7 Vertical Groundwater Gradients.xlsx Page 1 of 1 Identification Monitoring Zone Total Well Depth1 (Feet-BGS) Screened Interval (Feet-BGS) Measuring Point TOC (Feet-MSL) Ground Surface (Feet-MSL) Depth to Water1 (Feet-BTOC) Potentiometric Surface Elevation (feet MSL) Vertical Gradient Direction MW-05C Surficial 45 40-45 13.32 13.00 4.61 8.71 MW-05E Pee Dee 150 145-150 15.77 12.83 7.14 8.63 MW-23C Surficial 45 40-45 16.77 14.17 6.71 10.06 MW-23E Pee Dee 150 140-150 16.56 13.79 6.63 9.93 MW-37C Surficial 43 38-43 23.72 20.94 16.59 7.13 MW-37E Pee Dee 150 145-150 23.82 20.93 16.61 7.21 MW-38B Surficial 25 20-25 15.81 13.02 6.38 9.43 MW-38D Pee Dee 100 95-100 15.88 13.01 6.59 9.29 MW-39B Surficial 25 20-25 21.39 18.31 12.85 8.54 MW-39D Pee Dee 99 94-99 20.85 17.87 12.50 8.35 MW-40B Surficial 21.5 16.5-21-5 13.94 11.17 4.75 9.19 MW-40D Pee Dee 90 85-90 13.97 11.22 4.79 9.18 Prepared by: WJW Checked by: ARL Notes: BGS - Below ground surface BTOC - Below top of casing MSL - Mean sea level 1Well depths and water levels measured by SynTerra, July 27, 2016 MW-37CD Pee Dee 74 69-74 23.74 3.35E-03 downward 1.87E-02 downward 2.14E-03 downward 3.75E-03 downward upward downward MW-05CD Pee Dee 74 8.616.9012.6915.5169-74 100Pee DeeMW-05D -8.79E-03 6.50E-04 17.9295-100100Pee DeeMW-23D 8.177.1012.8015.2790-100 10.037.8915.04 downward1.85E-03 -5.77E-04 upward 7.2316.5521.01 -3.74E-03 upward 4.38E-04 downward 20.67 16.59 7.15 23.7890-100100Pee DeeMW-37D SurficialMW-38C 4.66E-03 downward 8.59E-04 downward 9.346.5112.9915.8540-4545 8.4612.55 9.234.8011.1237-4242SurficialMW-40C 18.05MW-39C Surficial 45 40-45 21.01 -2.04E-03 upward 9.65E-04 downward 14.03 TABLE 1-8 2016 CAMA MONITORING WELL SAMPLE LOCATIONS L.V. SUTTON ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, WILMINGTON, NC P:\Duke Energy Progress.1026\108. Sutton Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 1-8 2016 CAMA Monitoring Well Sample Locations.xlsx Page 1 of 1 Sampling Identification Hydrostrategraphic Unit Well Location Rationale MW-05CD PeeDee Background CSA BG, establish background dataset MW-05D PeeDee Background CSA BG, establish background dataset MW-05E Lower PeeDee Background CSA BG, establish background dataset MW-23D PeeDee East of Ash Basin NCDEQ requested well location MW-27C Lower Surficial North of Ash Basin Selenium Data Gap MW-37CD PeeDee Background CSA BG, establish background dataset MW-37D PeeDee Background CSA BG, establish background dataset MW-37E Lower PeeDee Background CSA BG, establish background dataset MW-38B Upper Surficial North of Ash Basin NCDEQ requested well location MW-38C Lower Surficial North of Ash Basin NCDEQ requested well location MW-38D PeeDee North of Ash Basin NCDEQ requested well location MW-39B Upper Surficial North of Ash Basin NCDEQ requested well location MW-39C Lower Surficial North of Ash Basin NCDEQ requested well location MW-39D PeeDee North of Ash Basin NCDEQ requested well location MW-40B Upper Surficial North of Ash Basin NCDEQ requested well location MW-40C Lower Surficial North of Ash Basin NCDEQ requested well location MW-40D PeeDee North of Ash Basin NCDEQ requested well location Prepared by: WJW Checked by: PBW TABLE 1-9 GROUNDWATER MONITORING PARAMETERS L.V. SUTTON ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, WILMINGTON, NC P:\Duke Energy Progress.1026\108. Sutton Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 1-9 Groundwater Monitoring Parameters.xlsx Page 1 of 1 PARAMETER RL UNITS METHOD pH NA SU Field Water Quality Meter Specific Conductance NA µS/cm Field Water Quality Meter Temperature NA ºC Field Water Quality Meter Dissolved Oxygen NA mg/L Field Water Quality Meter Oxidation Reduction Potential NA mV Field Water Quality Meter Eh NA mV Field Water Quality Meter Turbidity NA NTU Field Water Quality Meter Aluminum 0.005 mg/L EPA 200.7 or 6010C Antimony 0.001 mg/L EPA 200.8 or 6020A Arsenic 0.001 mg/L EPA 200.8 or 6020A Barium 0.005 mg/L EPA 200.7 or 6010C Boron 0.05 mg/L EPA 200.7 or 6010C Chromium 0.001 mg/L EPA 200.7 or 6010C Cobalt 0.001 mg/L EPA 200.8 or 6020A Copper 0.001 mg/L EPA 200.8 or 6020A 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 0.005 mg/L EPA 200.7 or 6010C Radium 226 1 pCi/L EPA 903.1 Modified Radium 228 3 pCi/L EPA 904.0/SW846 9320 Modified Uranium (233, 234, 236, 238)Varies by isotope µg/mL SW846 3010A/6020A Alkalinity (as CaCO3)20 mg/L SM 2320B Bicarbonate 20 mg/L SM 2320 Calcium 0.01 mg/L EPA 200.7 Carbonate 20 mg/L SM 2320 Chloride 0.1 mg/L EPA 300.0 or 9056A Hardness NA mg/L as CaCO3 EPA 130.1 Magnesium 0.005 mg/L EPA 200.7 or 6010C Nitrate + Nitrite 0.023 mg-N/L EPA 353.2 Potassium 0.1 mg/L EPA 200.7 Methane 0.01 mg/L RSK - 175 Sodium 0.05 mg/L EPA 200.7 Sulfate 0.1 mg/L EPA 300.0 or 9056A Sulfide 0.1 mg/L SM 4500 S2 D Total Dissolved Solids 25 mg/L SM 2540C Total Organic Carbon 0.1 mg/L SM5310C/EPA9060A Total Suspended Solids 2 mg/L SM 2450D Prepared by: JAW Checked by: BER Notes: NA indicates not applicable. FIELD PARAMETERS INORGANICS RADIONUCLIDES ANIONS/CATIONS/OTHER 1. Inorganics analyzed for total and dissolved (0.45 micron) concentrations. TABLE 2-1 DEQ GLOBAL CSA COMMENTS FOR DEP SITES L.V. SUTTON ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, WILMINGTON, NC P:\Duke Energy Progress.1026\108. Sutton Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\ Table 2-1 DEQ Global CSA Comments for DEP Sites.xlsx Page 1 of 4 Number General Comment General Response to Comment 1 DEQ requests determination of 'provisional' background concentrations (for groundwater in particular). It is understood that until a sufficient background data set becomes available to do statistical analysis the term 'provisional background concentrations' will be used. Duke is to propose 'provisional background concentrations' and DEQ will determine background concentrations. Provisional background groundwater concentrations were provided in the CAP Part 1 reports. Updated provisional background groundwater concentrations are included in this CSA Supplement 1 report. 2 Provisional background concentrations should be determined for each flow zone (hydrostratigraphic unit) at each facility while considering similar subsurface geochemical conditions and site- specific conditions (e.g., oxic versus anoxic conditions). Provisional background concentrations were provided in the CAP Part 1 reports and presented for each media type (soil, sediment, surface water) and hydrogeologic flow zone. Updated provisional background groundwater concentrations are included in this CSA Supplement 1. 3 Geochemical controls (e.g., pH, DO, and Eh-redox) associated with contaminant migration should be considered in Site Conceptual Model. Eh maps similar to pH maps would be useful for this purpose. Geochemical controls were discussed in the CAP Part 1 and CAP Part 2 documents. PHREEQC geochemical modeling and pH/Eh maps were included in the discussion. 4 Some soil sample analytical detection limits were greater than the NC Soil Protection of Groundwater goals. Soil analysis method detection limits should be as close as possible to these values. Models and risk assessment evaluations used the method detection limit as a conservative approach when detection limits 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 secondary soil source contributions (i.e., leaching of ash constituents onto soil, leaching of naturally occurring constituents from native soils, leaching due to changing geochemical conditions). Geochemical and fate and transport model evaluations provided in the CAP considered these mechanisms. TABLE 2-1 DEQ GLOBAL CSA COMMENTS FOR DEP SITES L.V. SUTTON ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, WILMINGTON, NC P:\Duke Energy Progress.1026\108. Sutton Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\ Table 2-1 DEQ Global CSA Comments for DEP Sites.xlsx Page 2 of 4 Number General Comment General Response to Comment 6 COIs should be developed based upon results from pore water, groundwater and other media. Include hexavalent chromium as COI due to interest in water supply well results. Constituents exceeding the 2L standard have been included in the CAP. The risk assessment screening process is consistent with 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- 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. The CSA Supplement 1 graphics address this comment. 8 Well construction and integrity should be considered when analyzing the groundwater data. Monitoring wells that exhibit high pH or turbidity should be redeveloped or replaced. Data from samples with >10 NTUs should be screened prior to use in statistical analysis. In post-CSA activities, wells have been redeveloped or replaced as necessary. Turbid sample data (samples with turbidity >10 NTUs) have been screened from use in statistical analysis using professional judgement where samples may have been visually clear or the turbidity was close to 10 NTUs. 9 Address influence of ash impoundments on subsurface geochemistry and how that may influence contaminant distribution related to CCRs or cause metals to leach from native soils. Geochemical controls and PHREEQC geochemical modeling were discussed in the CAP Part 1 and CAP Part 2 documents. 10 Provide vertical gradient maps/figures illustrating flow paths, areas of recharge and discharge. Provide plan view map. Vertical gradient maps were included in the CAP Part 1 reports. 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 strontium, and provide information on maps. A map of the water supply wells sampled by DEQ and a tabulation 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. TABLE 2-1 DEQ GLOBAL CSA COMMENTS FOR DEP SITES L.V. SUTTON ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, WILMINGTON, NC P:\Duke Energy Progress.1026\108. Sutton Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\ Table 2-1 DEQ Global CSA Comments for DEP Sites.xlsx Page 3 of 4 Number General Comment General Response to Comment 13 Include analysis for total uranium, radium-226, and radium-228 in background, below ash basin, immediate downgradient, and other downgradient locations. Use Federal MCL for standard for Ra 226, Ra 228, and U. Key wells located in background, below the ash basins, and downgradient of the ash basins have been sampled for total uranium, Ra 226, and Ra 228. These parameters are also included in the 2016 monitoring plan. 14 COPCs (or COI's) should be modeled using site specific Kd values or a technical basis provided as to why the modeling or site specific Kd for a parameter could not be conducted. The models should be "living entities" and updated as more information becomes available that could change or confirm the outcome of the models. Agreed, it is anticipated that the various models (i.e., geochemical, flow and transport) will be updated as additional data relevant to the models becomes available. 15 Appropriate PSRG for chromium is hexavalent chromium due to its toxicity drives the risk for the constituent. The PSRC for hexavalent chromium is being used in post -CSA reports for data comparison purposes. 16 Potential receptors identified as part of the risk assessment should include non-trespassing recreational users of surface water bodies such as boaters and water supply wells. Recreational users of surface water were identified as potential receptors and evaluated as part of the Risk Assessment provided 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 concentrations above the reporting limit/PQL. Use inferred (dashes) lines where appropriate. Revised isoconcentration maps with contour lines indicating concentrations above the reporting limit are included in this document. Where appropriate, inferred lines are used. 18 Data collected to support CSAs should be incorporated into maps, narratives and provided in CAPs (water supply, seep, SW, sediment, background). Data collected prior to CAMA activities should also be included. The requested information has been included in various reports including the CSA report, CAP Part 1, CAP Part 2, and this CSA Supplement 1 report. TABLE 2-1 DEQ GLOBAL CSA COMMENTS FOR DEP SITES L.V. SUTTON ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, WILMINGTON, NC P:\Duke Energy Progress.1026\108. Sutton Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\ Table 2-1 DEQ Global CSA Comments for DEP Sites.xlsx Page 4 of 4 Number General Comment General Response to Comment 19 2L exceedances related to naturally occurring conditions cannot be confirmed until, at a minimum, provisional background concentrations are determined. Dynamic redox and geochemical conditions can liberate naturally occurring metals (e.g., As, Fe, Mn) from soil and aquifer media. Noted. Initial provisional background concentrations were presented in the CAP Part 1 report based upon the data available at the time. Updated provisional background concentrations are presented in this CSA Supplement 1 report using 5 or 6 data sets 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 relates to groundwater modeling or risk assessment considerations should be included in the CAP. A discussion of groundwater and surface water interaction was provided in the CAP Part 1 and site data was incorporated into the groundwater models. Stream information was incorporated in the modeling and risk assessments. Prepared by: JAW Checked by: KWW TABLE 2-2 RADIOLOGICAL ANALYTICAL RESULTS L.V. SUTTON ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, WILMINGTON, NC P:\Duke Energy Progress.1026\108. Sutton Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 2-2 Radiological Analytical Results.xlsx Page 1 of 2 Radium-226 Radium-228 Total Radium Uranium-233 Uranium-234 Uranium-236 Uranium-238 Total Uranium pCi/L pCi/L pCi/L ug/mL ug/mL ug/mL ug/mL ug/mL ------5 ------------0.03 Sample ID Sample Collection Date MW-4B 03/08/2016 0.723 3.4 4.123 <0.00005 <0.00005 <0.00005 0.000086 j 0.000086 j MW-5A 03/08/2016 <1 <3 <RL <0.00005 <0.00005 <0.00005 <0.0002 <RL MW-5A 06/16/2016 0.644 0.568 1.212 <0.00005 <0.00005 <0.00005 <0.0002 <RL MW-5B 03/08/2016 <1 <3 <RL <0.00005 <0.00005 <0.00005 <0.0002 <RL MW-5B 06/16/2016 0.982 0.757 1.739 <0.00005 <0.00005 <0.00005 <0.0002 <RL MW-5C 03/08/2016 0.595 <3 0.595 <0.00005 <0.00005 <0.00005 <0.0002 <RL MW-5C 06/15/2016 0.969 2.88 3.849 <0.00005 <0.00005 <0.00005 <0.0002 <RL MW-5CD 06/16/2016 0.781 <1 0.781 <0.00005 <0.00005 <0.00005 0.000789 0.000789 MW-5D 06/16/2016 <1 <1 <RL <0.00005 <0.00005 <0.00005 0.000958 0.000958 MW-5E 07/07/2016 3.66 0.929 4.589 <0.00005 <0.00005 <0.00005 <0.0002 <RL MW-37B 03/08/2016 0.546 <3 0.546 <0.00005 <0.00005 <0.00005 <0.0002 <RL MW-37B 06/14/2016 0.521 0.667 1.188 <0.00005 <0.00005 <0.00005 <0.0002 <RL MW-37C 03/08/2016 <1 <3 <RL <0.00005 <0.00005 <0.00005 <0.0002 <RL MW-37C 06/14/2016 1.27 1.24 2.51 <0.00005 <0.00005 <0.00005 <0.0002 <RL MW-37CD 06/23/2016 1.12 <1 1.12 <0.00005 <0.00005 <0.00005 0.00177 0.00177 MW-37D 06/23/2016 2.82 <1 2.82 <0.00005 <0.00005 <0.00005 0.00306 0.00306 MW-37E 07/07/2016 0.477 <1 0.477 <0.00005 <0.00005 <0.00005 <0.0002 <RL ABMW-1S 06/17/2015 1.62 <3 1.62 <0.00005 <0.00005 <0.00005 0.0415 0.0415 ABMW-2S 06/04/2015 1.01 <3 1.01 <0.00005 <0.00005 <0.00005 <0.0002 <RL AW-8B 06/02/2015 1.65 <3 1.65 <0.00005 <0.00005 <0.00005 <0.0002 <RL MW-38B 06/16/2016 1.01 0.978 1.988 <0.00005 <0.00005 <0.00005 <0.0002 <RL MW-39B 06/22/2016 1.39 <1 1.39 <0.00005 <0.00005 <0.00005 0.000241 0.000241 MW-40B 06/17/2016 0.556 1.21 1.766 <0.00005 <0.00005 <0.00005 <0.0002 <RL Federal MCL Analytical Parameter Reporting Units Analytical Results Background Ash Pore Water Surficial Upper TABLE 2-2 RADIOLOGICAL ANALYTICAL RESULTS L.V. SUTTON ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, WILMINGTON, NC P:\Duke Energy Progress.1026\108. Sutton Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 2-2 Radiological Analytical Results.xlsx Page 2 of 2 Radium-226 Radium-228 Total Radium Uranium-233 Uranium-234 Uranium-236 Uranium-238 Total Uranium pCi/L pCi/L pCi/L ug/mL ug/mL ug/mL ug/mL ug/mL ------5 ------------0.03 Sample ID Sample Collection Date Federal MCL Analytical Parameter Reporting Units Analytical Results ABMW-2D 06/04/2015 0.739 1.6 2.339 <0.00005 <0.00005 <0.00005 <0.0002 <RL AW-8C 06/02/2015 <1 <3 <RL <0.00005 <0.00005 <0.00005 <0.0002 <RL MW-38C 06/16/2016 0.881 <1 0.881 <0.00005 <0.00005 <0.00005 <0.0002 <RL MW-39C 06/22/2016 1.15 <1 1.15 <0.00005 <0.00005 <0.00005 0.0000788 j 0.0000788 j MW-40C 06/17/2016 <1 0.755 0.755 <0.00005 <0.00005 <0.00005 <0.0002 <RL ABMW-1D 06/17/2015 0.651 2 2.651 <0.00005 <0.00005 <0.00005 0.0000978 j 0.0000978 j MW-23D 06/16/2016 0.584 <1 0.584 <0.00005 <0.00005 <0.00005 0.000132 j 0.000132 j MW-38D 06/16/2016 <1 <1 <RL <0.00005 <0.00005 <0.00005 0.000621 0.000621 MW-39D 06/22/2016 <1 0.831 0.831 <0.00005 <0.00005 <0.00005 0.000967 0.000967 MW-40D 06/17/2016 <1 <1 <RL <0.00005 <0.00005 <0.00005 0.0004 0.0004 Prepared by: BER Checked by: PBW Notes: - Concentration greater than the Federal MCL (https://www.epa.gov/sites/production/files/2016-06/documents/npwdr_complete_table.pdf) < = concentration not detected at or above reporting limit j = Indicates concentration reported below Practical Quantitation Limit (PQL), but above Method Detection Limit (MDL) and therefore concentration is estimated. RL = reporting limit pCi/L = picocuries per liter ug/mL = micrograms per milliliter Pee Dee Upper Surficial Lower TABLE 3-1 CHLORIDE BROMIDE RATIO RESULTS L.V. SUTTON ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, WILMINGTON, NC P:\Duke Energy Progress.1026\108. Sutton Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 3-1 Chloride Bromide Ratio Results.xlsx Page 1 of 1 Bromide Chloride Chloride Chloride/Bromide ug/L mg/L ug/L ratio NE 250 250000 Sample ID Sample Collection Date MW-5CD 6/16/2016 1000 270 270000 270.000 MW-5D 6/16/2016 2600 680 680000 261.538 MW-23D 6/16/2016 550 160 160000 290.909 MW-37CD 6/23/2016 <100 6.5 6500 <65.000 MW-37D 6/23/2016 180 46 46000 255.556 MW-38D 6/16/2016 1700 480 480000 282.353 MW-39D 6/22/2016 1600 380 380000 237.500 MW-40D 6/17/2016 1500 370 370000 246.667 MW-5E 7/7/2016 1900 460 460000 242.105 MW-37E 7/7/2016 1300 370 370000 284.615 Prepared by: WJW Checked by: PBW Notes: ug/L = microgram per liter mg/L = milligrams per liter Analytical Results Pee Dee Upper Pee Dee Lower Analytical Parameter Reporting Units 15A NCAC 02L Standard TABLE 4-1 DATA GAP SOIL ANALYTICAL RESULTS WITH PROVISIONAL BACKGROUND L.V. SUTTON ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, WILMINGTON, NC P:\Duke Energy Progress.1026\108. Sutton Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 4-1 Data Gap Soil Analytical Results with Provisional Background.xlsx Page 1 of 1 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 Silica Silver Sodium Strontium Sulfate Thallium Total Organic Carbon Vanadium Zinc %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 mg/kg mg/kg 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 1200 NE 100000 NE 2.4 NE 1200 70000 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 78 NE 9400 NE 0.16 NE 78 4600 NE NE NE 0.9 5.8 580 63 45 3 NE NE NE 0.9 700 150 270 NE 65 1 NE 130 NE NE 2.1 NE 3.4 NE NE NE 0.28 NE 6 1200 NE NE NE NE NE 6 NE 4.5 NE NE NE NE NE NE 1300 NE NE 6.3 NE NE NE NE NE NE NE NE NE NE NE NE NE 3.8 NE NE NE 5920 NE 8 9.1 0.49 29.6 0.62 51800 NE 31.5 6.8 4.6 31800 8.2 16700 105 NE 3.9 17.1 NE 2970 5.5 2150 1.1 1250 165 NE 6.4 5470 27 36.5 Sample ID Sample Collection Date AW-08C (40-42) 02/04/2015 NA NA NA <1.1 <1.1 2.7 NA <2.8 NA NA NA NA <1.1 NA 392 NA NA 1.5 NA NA 0.4 NA NA <1.1 NA NA NA NA NA <1.1 NA 1.1 NA MW-5CD (72-73)06/02/2016 21.1 9.1 H6 4350 <5 N2 5.7 9.1 0.45 22.9 0.62 47900 <317 D3 28.2 6.8 2.6 10500 8.2 16700 105 <0.0089 <1.3 4.8 <31.7 H3,D3 2380 5.5 2150 N2 <0.63 616 NA <317 D3 6.4 4330 27 28 MW-5D (95-96)06/02/2016 20.3 9.4 H6 5320 <5.2 N2 3 8.3 0.49 29.6 <0.31 35000 <303 D3 31.5 <2.6 3.3 11700 4 4140 63.4 <0.01 1.6 6.2 <30.3 H3,D3 2670 <2.6 845 N2 <0.65 774 NA <303 D3 <2.6 3830 18.6 36.5 MW-5E (147-148)06/02/2016 14.3 8.9 H6 5920 <4.1 N2 8 9.1 0.46 29.2 <0.25 51800 <291 D3 31 2.4 4.6 31800 4.1 5910 59.6 <0.0078 3.9 17.1 <29.1 H3,D3 2970 <2.1 979 N2 1.1 1250 NA <291 D3 <2.1 2630 18 28.9 MW-37C (4-6)02/04/2015 NA NA NA <1.1 <1.1 0.64 NA <2.8 NA NA NA NA <1.1 NA 875 NA NA 3.9 NA NA 0.33 NA NA <1.1 NA NA NA NA NA <1.1 NA <1.1 NA MW-37C (43-45)02/04/2015 NA NA NA <1.2 <1.2 6 NA 4.5 NA NA NA NA <1.2 NA 1300 NA NA 6.3 NA NA 0.94 NA NA <1.2 NA NA NA NA NA <1.2 NA 3.8 NA MW-37D (95-96)06/04/2016 24.4 NA 2360 <2.4 N2 1.9 6.1 0.26 8.1 <0.15 18700 NA 17.7 <1.2 1.3 6730 2.1 5790 38.6 <0.011 0.63 3.1 NA 1590 <1.2 NA NA 149 38.3 NA <1.2 4670 12.4 16.7 MW-37E (147.5-148.5)06/03/2016 21.8 NA 5080 <2.3 N2,M6,R1 2.3 7.6 0.41 24.2 <0.14 48300 NA 27.7 1.8 2.9 11800 3.9 3000 58.2 <0.012 0.89 7.5 NA 2690 <1.1 NA NA 636 165 NA <1.1 5470 18.5 31.4 MW-38B (22.5-23.5)06/07/2016 20.1 8.4 H6 313 <4.5 N2 <2.2 <1.1 <0.11 <5.6 <0.27 <55.7 <304 D3 0.71 <2.2 <0.56 313 <2.2 <55.7 1.2 <0.0097 <1.1 <0.56 <30.4 H3,D3 <111 <2.2 299 N2 <0.56 <111 NA <304 D3 <2.2 <808 <2.2 <2.2 MW-38C (42.543.5)06/07/2016 18.8 6.9 H6 221 <5.1 N2 <2.5 <1.3 <0.13 <6.4 <0.31 <63.7 <307 D3 <0.64 <2.5 <0.64 60.3 <2.5 <63.7 6.4 <0.0088 <1.3 <0.64 <30.7 H3,D3 <127 <2.5 308 N2 <0.64 <127 NA <307 D3 <2.5 <792 <2.5 <2.5 MW-38D (97.5-98.5)06/07/2016 20.9 9.5 H6 4000 <4.4 N2 <2.2 7.1 0.42 24.9 <0.26 35300 <315 D3 25.3 <2.2 2.3 10100 2.9 6810 67.2 <0.0098 <1.1 4.5 <31.5 H3,D3 2310 <2.2 933 N2 <0.55 480 NA <315 D3 <2.2 5390 15.1 24.8 MW-39D (23-24)06/03/2016 21.4 7.5 H6 305 <5 N2 <2.5 <1.3 <0.13 <6.3 <0.3 <62.6 <315 D3 <0.63 <2.5 <0.63 144 <2.5 <62.6 0.97 <0.011 <1.3 <0.63 <31.5 H3,D3 <125 <2.5 355 N2 <0.63 <125 NA <315 D3 <2.5 <823 <2.5 <2.5 MW-39D (43-44)06/03/2016 20.5 6 H6 296 <5 N2 <2.5 <1.3 <0.13 <6.3 <0.3 <62.7 <314 D3 <0.63 <2.5 <0.63 102 <2.5 <62.7 0.31 <0.011 <1.3 <0.63 <31.4 H3,D3 <125 <2.5 391 N2 <0.63 <125 NA <314 D3 <2.5 <811 <2.5 <2.5 MW-39D (97-98)06/04/2016 20.6 9.8 H6 3830 <4.9 N2 <2.5 6.7 0.41 26.6 <0.3 25000 <316 D3 24.5 <2.5 2.2 9600 2.8 9830 62.9 <0.009 <1.2 4.5 <31.6 H3,D3 2160 <2.5 819 N2 <0.62 380 NA <316 D3 <2.5 3190 14.6 24.8 MW-40D (19.5-20.5)06/01/2016 16.4 6.8 505 <4.5 N2 <2.3 1.3 <0.11 <5.6 <0.27 <56.3 <302 D3 0.79 <2.3 <0.56 822 <2.3 <56.3 0.65 <0.011 <1.1 0.59 <29.9 H3,D3 <113 <2.3 321 N2 <0.56 <113 NA <302 D3 <2.3 <775 <2.3 <2.3 MW-40D (39.5-40.5)06/01/2016 16.3 6.7 H6 80.5 <2 N2 <1 <0.51 <0.051 <2.5 <0.12 <25.3 <293 D3 0.27 <1 0.57 48.7 <1 <25.3 <0.28 <0.011 <0.51 0.3 <29.3 H3,D3 <50.5 <1 91.3 N2 <0.25 <50.5 NA <293 D3 <1 <773 <1 1.7 MW-40D (87-88)06/02/2016 21 9.4 H6 3580 <5.1 N2 <2.6 7.3 0.4 27.6 <0.31 27500 <311 D3 23.2 <2.6 2.4 9430 3 12500 69.8 <0.01 <1.3 4.4 <31.1 H3,D3 2130 <2.6 1130 N2 <0.64 445 NA <311 D3 <2.6 3160 14.2 25.2 Prepared by: BER Checked by: PBW Notes: - Constituent exceeds Inactive Hazardous Sites Branch Preliminary Soil Remediation Goals (PSRG) Protection of Groundwater Table September 2015 or maximum concentration from background data set (whichever is greater). - Total concentration less than appropriate comparative value (PSRG Protection of Groundwater or Provisional background) mg/kg = milligram per kilogram NA = Not analyzed NE = Not established % = percent < = concentration not detected at or above reporting limit Std. Units = Standard Units 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. H6 = Analysis initiated outside of the 15 minute EPA required holding time. M6 = Matrix spike and Matrix spike duplicate recovery not evaluated against control limits due to sample dilution. N2 = The lab does not hold TNI accredidation for this parameter. R1 = RPD value was outside control limits. Background Downgradient Provisional PeeDee Aquifer Background Concentration Analytical Parameter Analytical Results PSRG_Protection of Groundwater PSRG_Residential Health PSRG_Industrial Health Reporting Units Provisional Surficial Aquifer Background Concentration TABLE 4-2 PEE DEE SOIL PROVISIONAL BACKGROUND L.V. SUTTON ENERGY COMPLEX DUKE ENERGY COMPLEX, LLC, WILMINGTON, NC P:\Duke Energy Progress.1026\108. Sutton Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 4-2 Pee Dee Soil Provisional Background.xlsx Page 1 of 1 Industrial Health Residential Health Protection of Groundwater Aluminum 100000 15000 NE 2360 - 5920 5920 Antimony 94 6.2 0.9 ND NE Arsenic 3 0.67 5.8 1.9 - 8 8 Barium 44,000 3000 580 6.1 - 9.1 9.1 Beryllium 460 32 63 0.26 - 0.49 0.49 Boron 46,000 3200 45 8.1 - 29.6 30 Cadmium 200 14 3 ND - 0.62 0.62 Calcium NE NE NE 18700 - 51800 51800 Chloride NE NE NE ND NE Chromium NE NE NE 17.7 - 31.5 31.5 Cobalt 70 4.6 0.9 1.8 - 6.8 6.8 Copper 9400 620 700 1.3 - 4.6 4.6 Iron 100000 11000 150 6730 - 31800 31800 Lead 800 400 270 2.1 - 8.2 8.2 Magnesium NE NE NE 3000 - 16700 16700 Manganese 5200 360 65 38.6 - 105 105 Mercury 8 1.9 1 ND NE Molybdenum 1200 78 NE 0.63 - 3.9 3.9 Nickel 4400 300 130 3.1 - 17.1 17.1 Nitrate (as N)100000 26000 NE ND NE Potassium NE NE NE 1590 - 2970 2970 Selenium 1200 78 2.1 ND - 5.5 5.5 Silica NE NE NE 845 - 2150 2150 Silver 1200 78 3.4 ND - 1.1 1.1 Sodium NE NE NE 149 - 1250 1250 Strontium 100000 9400 NE 38.3 - 165 165 Sulfate NE NE NE ND NE Thallium 2.4 0.16 0.28 ND - 6.4 6.4 Total Organic Carbon NE NE NE 2630 - 5470 5470 Vanadium 1200 78 6 12.4 - 27 27 Zinc 70000 4600 1200 16.7 - 36.5 36.5 Prepared By: BER Checked By: PBW Notes: = Indicates comparative value Soil PSRG - Inactive Hazardous Sites Branch Preliminary Soil Remediation Goals (PSRGs) September 2015 All concentrations reported in milligrams per kilogram ND = Not Detected NE = Not Established **Provisional background concentration is equal to the maximum background concentration taken from locations MW-05 and MW-37 well clusters Shading indicates comparative value to be used in risk assessment and corrective action evaluation if necessary Analytical Parameter North Carolina Preliminary Soil Remediation Goals Range of Observed Concentrations Provisional Background Concentration** TABLE 4-3 PROVISIONAL UPPER SURFICIAL BACKGROUND SUMMARY L.V. SUTTON ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, WILMINGTON, NC P:\Duke Energy Progress.1026\108. Sutton Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 4-3 Provisional Upper Surficial Background Summary.xlsx Page 1 of 1 Detected Background Concentration Minimum Detected Background Concentration Maximum Provisional Background Concentration** pH S.U.6.5-8.5 5 19 18 95 3.9 5.4 3.9 - 5.4Δ Antimony µg/L 1*5 18 0 0 ND ND ND Arsenic µg/L 10 5 18 0 0 ND ND ND Barium µg/L 700 5 18 18 100 7 126 498 Boron µg/L 700 5 18 0 0 65 67 75.02 Chromium (VI)µg/L 0.07^5 13 1 8 ND 0.033 0.033Δ Cobalt µg/L 1*5 17 2 12 3.64 3.97 5.391 Iron µg/L 300 5 19 19 100 12 700 1,488 Lead µg/L 15 5 18 0 0 ND ND ND Manganese µg/L 50 5 18 13 72 6 112 403 Nitrate as N mg-N/L 10 5 17 16 94 0.016 6.2 6.2 Selenium µg/L 20 5 18 0 0 ND ND ND Sodium mg/L NE 5 18 18 100 0.00202 7.51 7.51Δ Strontium µg/L NE 5 18 8 44 5 85 61.46 Thallium µg/L 0.2*5 18 2 11 0.35 0.42 0.494 TDS mg/L 500 5 17 4 24 100 230 716.5 Vanadium µg/L 0.3*5 18 4 22 1.93 2.63 6.463 Prepared by: MCD Checked by: HHS Notes: = Indicates comparative value Wells included for background analysis: MW-04, MW-04A, MW-05A, MW-05B and MW-37B NE = Not Established mg-N/L = Milligrams nitrogen per liter ND = Not detected above reporting limit % = percent mg/L = milligrams per liter µg/L = micrograms per liter TDS = Total dissolved solids S.U. = Standard Unit ^ = NC DHHS Health Screening Level *Interim Maximum Allowable Concentration (IMAC) of the 15A NCAC 02L Standard, Appendix 1, April 2013. ΔProvisional background concentration is the maximum observed background concentration. Frequency of Detections (%) Upper Surficial Only those parameters for which a 2L is exceeded in the referenced hydrostratigraphic unit are included, plus Strontium as an indicator parameter **Provisional background concentration is the 95 Percent Upper Prediction Limit. Analytical Parameter Reporting Units NC2L Standard Number of Wells Number of Samples Number of Detections TABLE 4-4 PROVISIONAL LOWER SURFICIAL BACKGROUND SUMMARY L.V. SUTTON ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, WILMINGTON, NC P:\Duke Energy Progress.1026\108. Sutton Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 4-4 Provisional Lower Surficial Background Summary.xlsx Page 1 of 1 Detected Background Concentration Minimum Detected Background Concentration Maximum Provisional Background Concentration** pH S.U.6.5-8.5 3 84 84 100 4.9 7.4 4.9 - 7.4Δ Antimony µg/L 1*3 46 1 2 ND 0.14 0.14Δ Arsenic µg/L 10 3 105 27 26 0.28 9.8 7.416 Boron µg/L 700 3 46 6 13 10 30 60.74 Cadmium µg/L 2 3 46 0 0 ND ND ND Chloride mg/L 250 3 104 104 100 2.6 295 182.3 Chromium µg/L 10 3 46 2 4 0.61 3 4.185 Chromium (VI)µg/L 0.07^3 9 2 22 0.037 0.19 0.279 Cobalt µg/L 1*3 15 10 67 1.28 3.04 7.53 Copper µg/L 1000 3 46 1 2 ND 27.6 27.6Δ Iron µg/L 300 3 104 97 93 11 9,700 6,583 Lead µg/L 15 3 46 1 2 ND 0.24 0.24 Manganese µg/L 50 3 46 46 100 14 602 1,114 Nitrate as N mg-N/L 10 3 15 8 53 0.02 0.136 0.294 Selenium µg/L 20 3 105 6 6 1 17 2.497 Sodium mg/L NE 3 15 15 100 1.79 14.5 41.62 Strontium µg/L NE 3 13 13 100 12 167 167Δ Sulfate mg/L 250 3 45 44 98 5.5 15 18.07 Thallium µg/L 0.2*3 46 0 0 ND ND ND TDS mg/L 500 3 105 105 100 8 500 338.8 Vanadium µg/L 0.3*3 13 5 38 0.918 1.15 1.705 Prepared by: MCD Checked by: HHS Notes: = Indicates comparative value NE = Not Established µg/L = micrograms per liter ND = Not detected above reporting limit TDS = Total dissolved solids mg/L = milligrams per liter S.U. = Standard Unit mg - N/L = Milligram nitrogen per liter % = percent ^ = NC DHHS Health Screening Level Wells included for background analysis: MW-04B, MW-05C, and MW-37C *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. ΔProvisional background concentration is the maximum observed background concentration. Frequency of Detections (%) Lower Surficial Only those parameters for which a 2L is exceeded in the referenced hydrostratigraphic unit are included, plus Strontium as an indicator parameter Analytical Parameter Reporting Units NC2L Standard Number of Wells Number of Data Sets Number of Detections TABLE 4-5 PROVISIONAL UPPER PEE DEE BACKGROUND SUMMARY L.V. SUTTON ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, WILMINGTON, NC P:\Duke Energy Progress.1026\108. Sutton Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 4-5 Provisional Upper Pee Dee Background Summary.xlsx Page 1 of 1 Detected Background Concentration Minimum Detected Background Concentration Maximum Provisional Background ConcentrationΔ pH S.U.6.5-8.5 4 4 4 100 8.2 9.5 8.2-9.5 Antimony ug/L 1*4 4 0 0 ND ND ND Boron ug/L 700 4 4 3 75 146 3010 3010 Chloride mg/L 250 4 4 4 100 6.5 680 680 Chromium (IV)ug/L 0.07^4 4 2 50 0.033 0.064 0.064 Iron ug/L 300 4 4 4 100 51 1550 1550 Lead ug/L 15 4 4 1 25 ND 3.15 3.15 Manganese ug/L 50 4 4 4 100 6 23 23 Sodium mg/L NE 4 4 4 100 15.1 584 584 Strontium ug/L NE 4 4 4 100 77 232 232 Sulfate mg/L 250 4 4 4 100 11 110 110 Total Dissolved Solids mg/L 500 4 4 4 100 180 1700 1700 Vanadium ug/L 0.3*4 4 4 100 1.24 3.86 3.86 Prepared by: WJW Checked by: MCD Notes: = Indicates comparative value Wells included for background analysis: MW-05CD, MW-05D, MW-37CD and MW-37D NE = Not Established ND = Not detected above reporting limit mg/L = milligrams per liter µg/L = micrograms per liter % = percent TDS = Total dissolved solids S.U. = Standard Unit ^ = NC DHHS Health Screening Level *Interim Maximum Allowable Concentration (IMAC) of the 15A NCAC 02L Standard, Appendix 1, April 2013. ΔProvisional background concentration is the maximum observed background concentration. Frequency of Detections (%) Upper Pee Dee Only those parameters for which a 2L is exceeded in the referenced hydrostratigraphic unit are included, plus Strontium as an indicator parameter Analytical Parameter Reporting Units NC2L Standard Number of Wells Number of Data Sets Number of Detections TABLE 4-6 PROVISIONAL LOWER PEEDEE BACKGROUND SUMMARY L.V. SUTTON ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, WILMINGTON, NC P:\Duke Energy Progress.1026\108. Sutton Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 4-6 Provisional Lower Pee Dee Background Summary.xlsx Page 1 of 1 Detected Background Concentration Minimum Detected Background Concentration Maximum Provisional Background ConcentrationΔ pH S.U.6.5-8.5 2 2 2 100 9.4 12.5 9.4-12.5 Antimony ug/L 1*2 2 1 50 ND 5.38 5.38 Boron ug/L 700 2 2 2 100 1370 1420 1420 Chloride mg/L 250 2 2 2 100 370 460 460 Chromium ug/L 10 2 2 2 100 3.96 29.9 29.9 Chromium (IV)ug/L 0.07^2 2 2 100 0.059 0.28 0.28 Cobalt ug/L 1*2 2 0 0 ND ND ND Copper ug/L 1000 2 2 2 100 1.98 6.86 6.86 Iron ug/L 300 2 2 2 100 237 239 239 Lead ug/L 15 2 2 0 0 ND ND ND Manganese ug/L 50 2 2 2 100 7 10 10 Nitrate as N mg-N/L 10 2 2 1 50 ND 0.016 0.016 Selenium ug/L 20 2 2 0 0 ND ND ND Sodium mg/L NE 2 2 2 100 368 477 477 Strontium ug/L NE 2 2 2 100 235 2600 2600 Sulfate mg/L 250 2 2 2 100 87 97 97 Thallium ug/L 0.2*2 2 0 0 ND ND ND Total Dissolved Solids mg/L 500 2 2 2 100 1100 1900 1900 Vanadium ug/L 0.3*2 2 2 100 0.528 1.05 1.05 Prepared by: WJW Checked by: MCD Notes: = Indicates comparative value Wells included for background analysis: MW-05E, and MW-37E NE = Not Established ND = Not detected above reporting limit mg/L = milligrams per liter mg - N/L = Milligram nitrogen per liter µg/L = micrograms per liter S.U. = Standard Unit ^ = NC DHHS Health Screening Level *Interim Maximum Allowable Concentration (IMAC) of the 15A NCAC 02L Standard, Appendix 1, April 2013. ΔProvisional background concentration is the maximum observed background concentration. Only those parameters for which a 2L is exceeded in the referenced hydrostratigraphic unit are included, plus Strontium as an indicator parameter Frequency of Detections (%) Lower Pee Dee Analytical Parameter Reporting Units NC2L Standard Number of Wells Number of Data Sets Number of Detections TABLE 4-7 UPPER SURFICIAL GROUNDWATER EXCEEDANCES INCORPORATING PROVISIONAL BACKGROUND L.V. SUTTON ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, WILMINGTON, NC P:\Duke Energy Progress.1026\108. Sutton Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 4-7 Upper Surficial GW Exceedances Inc Provisional BG.xlsx Page 1 of 5 pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Barium Boron Chromium (VI) Chromium (VI) Speciation Cobalt Iron Lead Manganese Nitrate (as N)Selenium Sodium Strontium Thallium Total Dissolved Solids Vanadium S.U.ft Deg C umhos /cm mg/L mV mV NTUs mg/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L mg-N/L ug/L mg/L ug/L ug/L mg/L ug/L 6.5-8.5 NE NE NE NE NE NE NE NE 1*10 700 700 0.07^0.07^1*300 15 50 10 20 NE NE 0.2*500 0.3* 3.9-5.4 NE NE NE NE NE NE NE NE NE NE 498 75.02 0.033 0.033+5.391 1488 NE 403 6.2 NE 7.51 61.46 0.494 716.5 6.463 Sample ID Sample Collection Date MW-4 12/04/2015 5.3 6.56 19 175 0.3 87 292 2.43 1 <1 <1 51 <50 <0.03 NA <1 416 <1 52 0.11 <1 5.9 57 <0.2 100 2.61 MW-4 01/13/2016 5.4 6.86 19 163 0.86 120 325 2.73 0 <1 <1 66 <50 <0.03 NA <1 154 <1 33 2.8 <1 5.44 55 <0.2 100 1.96 MW-4A 12/04/2015 4.7 6.04 19 432 0.4 103 308 1.4 0 <1 <1 126 65 0.033 NA <1 111 <1 112 5.2 <1 7.51 85 0.42 230 2.63 MW-4A DUP 12/04/2015 4.7 6.04 19 432 0.4 103 308 1.4 0 <1 <1 127 66 <0.03 M1 NA <1 72 <1 113 4.8 <1 7.49 86 0.409 250 2.31 MW-4A 01/13/2016 4.7 6.36 18 220 0.81 156 361 0.47 0 <1 <1 68 67 <0.03 NA <1 53 <1 86 6.2 <1 3.16 63 <0.2 140 1.93 MW-5A 12/04/2015 4.6 2.75 17 27 1.7 305 510 1.6 NM <1 <1 15 <50 <0.03 NA <1 118 <1 17 0.107 <1 1.09 5 <0.2 <25 <0.3 MW-5A 01/13/2016 4.7 2.64 18 30 1.54 343 548 6.86 0 <1 <1 17 <50 <0.03 NA <1 375 <1 19 0.018 <1 1.29 <5 <0.2 <25 <0.3 MW-5A 03/08/2016 4.7 2.65 17 31 1.84 238 443 2.2 0 <1 <1 17 <50 <0.03 NA <1 118 <1 18 0.016 <1 1.36 <5 <0.2 <25 <0.3 MW-5A 06/16/2016 4.6 3.45 22 28 0.24 287 492 5 0.5 <1 <1 15 <50 <0.03 NA 1.11 789 <1 26 <0.01 <1 1.09 <5 <0.2 <25 0.473 B2 MW-5B 05/23/2014 3.9 NM 20 32 4.4 163 NM 7.51 NM <5.3 <6.8 44.5 <100 NA NA NA 700 <4.7 32 <25 <8.4 0.00202 <10 <5.4 <30 <2 MW-5B 12/04/2015 5.0 22.19 16 21 6.2 261 466 1.7 ND <1 <1 13 <50 <0.03 NA <1 181 <1 6 0.093 <1 0.984 <5 <0.2 <25 <0.3 MW-5B 01/13/2016 4.7 3.67 18 31 5.12 5 472 0.81 0 <1 <1 48 <50 <0.03 NA 3.97 112 <1 29 0.098 <1 1.41 7 <0.2 <25 <0.3 MW-5B 03/08/2016 4.6 3.68 19 33 6.75 241 446 0.8 0 <1 <1 47 <50 <0.03 NA 3.64 22 <1 32 0.077 <1 1.38 8 <0.2 <25 <0.3 MW-5B 06/16/2016 4.6 4.49 21 32 6.25 338 543 0.85 0 <1 <1 43 <50 <0.03 NA 3.42 30 <1 28 0.069 <1 1.48 7 <0.2 <25 0.302 B2 MW-37 10/03/2009 NM NM NM NM NM NM NM NM NM NA NA NA NA NA NA NA 196 NA NA NA NA NA NA NA NA NA MW-37B 03/27/2015 4.5 15.56 18 36 5.63 149 354 3.68 0.5 <1 <1 10 <50 NA NA <1 687 <1 38 0.102 <1 3.08 6 <0.2 <25 <0.3 MW-37B 06/02/2015 4.3 15.70 21 32 7.31 338 543 2.09 0 <1 <1 8 <50 NA NA <1 31 <1 7 0.096 <1 2.31 <5 <0.2 <25 <0.3 MW-37B 09/23/2015 5.0 15.89 23 53 7.3 181 386 2.26 NM <1 <1 8 <50 NA NA <1 79 <1 <5 NA <1 1.82 <5 0.35 NA <0.3 MW-37B 10/12/2015 5.1 12.44 22 26 8.91 243 448 0.42 NM <1 <1 7 <50 NA NA <1 12 <1 <5 0.16 <1 1.3 <5 <0.2 <25 <0.3 MW-37B 12/03/2015 4.9 14.68 19 32 7.8 155 360 4.05 0.5 <1 <1 8 <50 <0.03 NA <1 92 <1 <5 0.088 <1 1.8 <5 <0.2 <25 <0.3 MW-37B 01/13/2016 4.9 14.91 18 29 4.55 143 348 1.18 0.5 <1 <1 8 <50 <0.03 NA <1 67 <1 <5 0.104 <1 2.03 <5 <0.2 <25 <0.3 MW-37B 03/08/2016 4.8 14.89 19 30 7.78 186 391 0.9 0 <1 <1 7 <50 <0.03 NA <1 16 <1 <5 0.103 <1 2 <5 <0.2 <25 <0.3 MW-37B 06/14/2016 4.7 15.99 22 27 7.3 328 533 0.77 NM <1 <1 7 <50 <0.03 NA <1 10 <1 <5 0.108 <1 1.76 <5 <0.2 <25 <0.3 421-Well 3 06/02/2015 5.7 NM 20 138 2.92 162 367 2.36 NM <1 <1 44 73 NA NA <1 37 <1 84 1.5 <1 5.63 NA <0.2 66 NA 421-Well 3 10/13/2015 5.4 NM 20 123 3.4 215 420 0.59 NM <1 <1 45 72 NA NA <1 66 <1 81 2.2 <1 5.52 49 <0.2 76 0.366 421-Well 4 06/02/2015 5.3 NM 20 88 7.44 184 389 0.74 NM <1 <1 44 54 NA NA <1 71 <1 57 0.72 <1 5 NA <0.2 45 NA 421-Well 4 10/13/2015 5.3 NM 20 83 4.4 219 424 0.54 NM <1 <1 43 53 NA NA <1 63 <1 56 0.74 <1 4.85 40 <0.2 40 <0.3 AW-1B 02/06/2015 6.5 8.60 16 107 0.77 -92 113 249 NM <1 2.79 140 53 NA NA 10.4 10900 16.1 145 0.029 <1 31.2 120 <0.2 910 4.85 AW-1B 06/02/2015 5.8 8.70 21 42 0.56 101 306 9.87 <0.5 <1 <1 <5 <50 NA NA 1.44 2680 <1 105 0.044 <1 4.91 8 <0.2 44 <0.3 AW-2B 02/06/2015 6.5 18.64 15 269 2.7 -251 -46 5.69 4 <1 <1 50 <50 NA NA 2.44 4600 <1 814 <0.04 1.63 15.5 129 <0.2 140 0.32 AW-2B 06/03/2015 6.1 19.25 20 24 0.6 176 381 4.03 1 <1 <1 16 <50 NA <0.007 <1 1320 <1 204 0.014 <1 0.867 10 <0.2 <25 <0.3 AW-3B 02/05/2015 6.6 9.23 17 89 0.3 -430 -225 27.1 4 <1 <1 9 <50 NA NA <1 6610 <1 161 0.011 <1 3.62 20 <0.2 46 <0.3 AW-3B 06/11/2015 5.8 9.57 20 49 0.3 -91 114 0.6 5 <1 <1 10 <50 NA NA <1 6290 <1 13 <0.01 <1 1.29 <5 <0.2 29 0.427 AW-4B 02/05/2015 6.5 10.27 17 72 1.55 -292 -87 14.7 1.5 <1 <1 21 <50 NA NA 1.39 2600 <1 232 0.016 <1 2.86 23 <0.2 43 <0.3 AW-4B 06/05/2015 6.2 10.58 19 43 4.55 46 251 0.45 <0.5 <1 <1 12 <50 NA NA <1 41 <1 22 0.062 <1 1.4 13 <0.2 <25 <0.3 AW-4B 12/04/2015 5.8 8.35 20 35 6.11 112 317 0.44 0 <1 <1 13 <50 <0.03 NA <1 43 <1 <5 0.045 <1 1.28 10 <0.2 <25 <0.3 AW-4B 01/13/2016 5.8 8.98 14 32 5.99 192 397 0.6 0 <1 <1 14 <50 <0.03 NA <1 34 <1 7 0.039 <1 1.43 12 <0.2 35 <0.3 AW-5B 03/24/2015 7.2 16.39 19 185 0.09 -193 12 8.9 2.5 <1 <1 66 <50 NA NA <1 6790 <1 391 <0.01 <1 14.3 85 <0.2 130 <0.3 Analytical Parameter Field Parameters Background Analytical Results Surficial Upper 15A NCAC 02L Standard Reporting Units Provisional Background TABLE 4-7 UPPER SURFICIAL GROUNDWATER EXCEEDANCES INCORPORATING PROVISIONAL BACKGROUND L.V. SUTTON ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, WILMINGTON, NC P:\Duke Energy Progress.1026\108. Sutton Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 4-7 Upper Surficial GW Exceedances Inc Provisional BG.xlsx Page 2 of 5 pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Barium Boron Chromium (VI) Chromium (VI) Speciation Cobalt Iron Lead Manganese Nitrate (as N)Selenium Sodium Strontium Thallium Total Dissolved Solids Vanadium S.U.ft Deg C umhos /cm mg/L mV mV NTUs mg/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L mg-N/L ug/L mg/L ug/L ug/L mg/L ug/L 6.5-8.5 NE NE NE NE NE NE NE NE 1*10 700 700 0.07^0.07^1*300 15 50 10 20 NE NE 0.2*500 0.3* 3.9-5.4 NE NE NE NE NE NE NE NE NE NE 498 75.02 0.033 0.033+5.391 1488 NE 403 6.2 NE 7.51 61.46 0.494 716.5 6.463 Sample ID Sample Collection Date Analytical Parameter Field Parameters Analytical Results 15A NCAC 02L Standard Reporting Units Provisional Background AW-5B 06/03/2015 8.5 16.70 20 86 0.36 -90 115 4.49 0 <1 <1 25 <50 NA 0.013 <1 281 <1 26 0.011 <1 6.53 26 <0.2 50 <0.3 AW-5B 12/03/2015 5.4 13.93 20 86 4.16 197 402 0.22 0.5 <1 <1 70 <50 <0.03 NA 1.93 907 <1 165 0.325 M2 <1 1.33 32 <0.2 57 <0.3 AW-5B 01/13/2016 4.7 14.60 17 48 5.1 288 493 1.4 1 <1 <1 40 <50 <0.03 NA 1.71 374 <1 107 0.024 <1 1.62 6 <0.2 35 <0.3 AW-6B 02/05/2015 5.6 8.49 18 60 4.56 53 258 5.96 0.5 <1 <1 31 <50 NA NA <1 597 <1 90 0.015 <1 3.77 16 <0.2 27 <0.3 AW-6B 06/03/2015 4.8 9.00 20 38 6.55 155 360 4.85 <0.5 <1 <1 32 <50 NA 0.024 <1 71 <1 17 0.05 <1 1.54 25 <0.2 <25 <0.3 AW-6B 12/03/2015 6.0 6.29 19 52 5.08 359 564 5.14 0 <1 <1 27 <50 0.058 NA <1 81 <1 13 0.078 <1 1.24 46 <0.2 42 <0.3 AW-6B 01/13/2016 6.5 6.95 13 61 5.67 85 290 0.85 0 <1 <1 30 <50 0.11 NA <1 <10 <1 25 0.066 <1 1.51 47 <0.2 33 0.53 AW-8B 03/25/2015 5.3 6.57 19 45 0.31 -5 201 3.39 3 <1 <1 34 <50 NA NA 2.36 5380 <1 35 <0.01 <1 1.08 6 <0.2 <50 0.437 AW-8B 06/02/2015 5.1 6.77 23 43 0.32 95 300 4.49 3.5 <1 <1 25 <50 NA NA 2.53 4450 <1 29 0.022 <1 1.15 <5 <0.2 26 0.335 AW-8B 12/03/2015 5.0 5.97 20 35 0.2 57 262 0.46 0.5 <1 <1 18 <50 <0.03 NA 1.61 2640 <1 24 <0.01 <1 1.11 6 <0.2 <25 <0.3 AW-8B 01/13/2016 4.2 5.90 18 60 0.49 351 556 6.36 3 <1 <1 21 <50 <0.03 NA 2.25 3060 <1 21 <0.01 <1 1.1 <5 <0.2 <25 <0.3 AW-8B DUP 01/13/2016 4.2 5.90 18 60 0.49 351 556 6.36 3 <1 <1 20 <50 <0.03 NA 2.31 3020 <1 21 0.026 <1 1.11 <5 <0.2 27 <0.3 AW-9B 02/06/2015 5.7 8.43 16 49 4.13 -12 193 9.84 NM <1 <1 24 <50 NA NA <1 2520 <1 82 0.325 <1 2.39 19 <0.2 <25 0.56 AW-9B 06/04/2015 4.6 8.35 21 44 6.34 196 401 4.08 <0.5 <1 <1 18 <50 NA 0.038 <1 225 <1 18 0.158 <1 2.07 11 <0.2 <25 <0.3 AW-9B 12/03/2015 4.6 7.54 20 48 5.2 241 446 2.48 0 <1 <1 14 <50 NA NA <1 108 <1 7 0.084 <1 1.86 11 <0.2 <25 <0.3 AW-9B 01/13/2016 4.6 7.91 19 40 3.37 153 358 9.93 0 <1 <1 12 <50 <0.03 NA <1 250 <1 8 0.111 <1 1.77 11 <0.2 <25 0.479 GWPZ-1A 09/23/2015 6.7 7.32 23 62 5.2 158 363 5.77 NM 2.93 <1 8 57 NA NA <1 193 <1 <5 NA 2.54 1.23 52 <0.2 NA 1.52 GWPZ-1B 09/23/2015 6.7 7.17 23 370 2.68 53 258 5.01 NM 6.19 <1 47 222 NA NA <1 38 <1 <5 NA 16.2 10.3 244 0.695 NA 8.32 MW-2B 05/23/2014 5.9 NM 20 52 4.14 159 NM 2.61 NM <5.3 <6.8 <10 <100 NA NA NA <400 <4.7 <10 <5 <8.4 0.00258 52.6 <5.4 <30 <2 MW-3B 05/27/2014 5.6 NM 19 91 0.95 161 NM 0.71 NM <5.3 <6.8 <10 446 NA NA NA <43 <4.7 18.5 0.77 <8.4 0.00306 346 <5.4 61 <2 MW-6B 05/21/2014 6.7 NM 22 629 0.39 80 NM 2.53 NM <5.3 <6.8 34.9 1130 NA NA NA <400 <30 68.2 <.25 <8.4 0.0523 1930 <5.4 374 <2 MW-7A 06/02/2015 4.1 8.10 22 28 3.08 322 527 4.98 0 <1 <1 6 <50 NA NA <1 93 <1 <5 0.71 <1 0.452 <5 <0.2 <25 <0.3 MW-7B 06/02/2015 4.3 7.51 20 39 4.96 323 528 1.86 0 <1 <1 22 <50 NA NA <1 15 <1 9 0.53 <1 1.06 15 <0.2 <25 <0.3 MW-15 06/10/2015 6.8 3.22 20 408 0.1 -79 126 2.86 3 <1 23.6 30 54 NA NA <1 3690 <1 76 <0.01 <1 6.24 365 <0.2 250 3.88 MW-16 06/10/2015 5.9 6.81 21 151 2.28 39 244 1.83 <0.5 <1 1.49 20 90 NA 0.015 <1 113 <1 9 <0.01 <1 16.6 80 <0.2 84 0.316 MW-16 12/04/2015 6.4 7.31 20 111 0.6 -99 107 21.2 ND <1 3.31 18 109 <0.03 NA <1 874 <1 10 <0.01 <1 12.4 65 <0.2 75 2.36 MW-16 01/14/2016 6.3 7.20 20 141 0.65 -26 179 10.4 0.5 <1 2.43 21 114 0.032 NA <1 760 <1 13 <0.01 <1 15.2 71 <0.2 92 1.87 MW-17 03/22/1993 NM NM NM NM NM NM NM NM NM NA NA NA NA NA NA NA 620 NA NA NA NA NA NA NA NA NA MW-17 03/02/2006 6.1 19.03 NM NM NM NM NM NM NM NA 41 NA NA NA NA NA 2450 NA NA NA <5 NA NA NA 398 NA MW-17 12/12/2006 6.4 20.08 20 570 NM NM NM NM NM 0.33 18.8 162 2180 NA NA NA 2240 0.2 455 NA 0.68 NA NA 0.21 377 NA MW-17 03/06/2007 6.3 19.96 20 NM NM NM NM NM NM 4 22 161 2900 NA NA NA 2840 <3 441 NA <5 NA NA <1 387 NA MW-17 11/07/2007 6.2 20.42 NM 610 NM NM NM NM NM <2.5 25 143 2720 NA NA NA 1220 <5 353 NA <5 NA NA <1 367 NA MW-17 03/11/2008 6.2 20.44 20 622 NM NM NM NM NM <2.5 20 119 2440 NA NA NA 886 <5 276 NA <5 NA NA <1 396 NA MW-17 11/06/2008 6.5 21.16 20 630 NM NM NM NM NM <2 29 87 3060 NA NA NA 982 <5 162 NA <5 NA NA <1 393 NA MW-17 03/10/2009 6.5 20.31 20 614 NM NM NM NM NM <40 27 120 2000 NA NA NA 1110 <10 274 NA <20 NA NA <10 373 NA MW-17 10/06/2009 6.6 19.59 20 796 NM NM NM NM NM <5 34 140 2110 NA NA NA 1200 <5 259 NA <5 NA NA <5 471 NA MW-17 03/10/2010 6.6 19.50 20 645 NM NM NM NM NM <1 29 112 2140 NA NA NA 1560 <1 262 NA 4 NA NA <1 412 NA MW-17 11/11/2010 6.6 19.23 20 581 NM NM NM NM NM <0.5 35.2 102 2140 NA NA NA 1570 <5 284 NA <10 NA NA <0.1 342 NA MW-17 03/02/2011 6.2 20.12 18 585 NM NM NM 2.18 NM <0.5 7.1 126 2220 NA NA NA 386 <5 386 NA <10 NA NA 0.11 368 NA MW-17 10/04/2011 6.3 20.01 22 594 NM NM NM 2.44 NM <0.5 7.1 135 2090 NA NA NA 636 <5 305 NA <10 NA NA 0.14 360 NA TABLE 4-7 UPPER SURFICIAL GROUNDWATER EXCEEDANCES INCORPORATING PROVISIONAL BACKGROUND L.V. SUTTON ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, WILMINGTON, NC P:\Duke Energy Progress.1026\108. Sutton Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 4-7 Upper Surficial GW Exceedances Inc Provisional BG.xlsx Page 3 of 5 pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Barium Boron Chromium (VI) Chromium (VI) Speciation Cobalt Iron Lead Manganese Nitrate (as N)Selenium Sodium Strontium Thallium Total Dissolved Solids Vanadium S.U.ft Deg C umhos /cm mg/L mV mV NTUs mg/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L mg-N/L ug/L mg/L ug/L ug/L mg/L ug/L 6.5-8.5 NE NE NE NE NE NE NE NE 1*10 700 700 0.07^0.07^1*300 15 50 10 20 NE NE 0.2*500 0.3* 3.9-5.4 NE NE NE NE NE NE NE NE NE NE 498 75.02 0.033 0.033+5.391 1488 NE 403 6.2 NE 7.51 61.46 0.494 716.5 6.463 Sample ID Sample Collection Date Analytical Parameter Field Parameters Analytical Results 15A NCAC 02L Standard Reporting Units Provisional Background MW-17 03/06/2012 6.3 20.82 19 686 NM NM NM 1.74 NM <0.5 17 153 2230 NA NA NA 2040 <5 401 NA <10 NA NA <0.1 377 NA MW-17 06/05/2012 6.3 20.53 20 983 NM NM NM 3.47 NM <0.5 16.1 162 2120 NA NA NA 1890 <5 382 NA <10 NA NA 0.38 574 NA MW-20 06/10/2015 7.0 8.34 19 385 0.1 -51 154 1.3 0.5 <1 1.12 55 52 NA NA <1 747 <1 107 <0.01 <1 20.5 350 <0.2 220 39.6 MW-22 02/11/1994 NM NM NM NM NM NM NM NM NM NA NA NA NA NA NA NA 510 NA NA NA NA NA NA NA NA NA MW-22B 10/03/2011 7.3 8.52 22 113 NM 99 304 0.42 NM NA <5 NA <50 NA NA NA <50 NA 88.7 NA <10 NA NA NA 54 NA MW-22B 01/17/2012 5.8 10.48 20 93 1.78 161 366 1.1 NM NA <5 NA 175 NA NA NA 460 NA 85.5 NA <10 NA NA NA 35 NA MW-22B 10/03/2012 6.2 9.93 24 82 2.57 116 321 1.88 NM <0.5 <5 44.1 180 NA NA NA <50 <5 116 NA <10 NA NA <0.1 40 NA MW-22B 06/01/2015 5.7 8.77 20 31 5.68 85 290 0.28 NM <1 <1 9 <50 NA NA <1 <10 <1 <5 0.2 <1 1.42 NA <0.2 <25 NA MW-22B 10/13/2015 5.8 4.72 23 26 6.3 203 408 0.6 NM <1 <1 9 <50 NA NA <1 <10 <1 6 0.05 <1 1.65 17 <0.2 350 <0.3 MW-22B 03/08/2016 5.2 7.45 20 27 7.17 258 463 0.1 0 <1 <1 8 <50 NA NA <1 <10 <1 7 0.05 <1 1.72 14 <0.2 <25 <0.3 MW-22B 06/15/2016 5.3 9.22 23 23 6.09 277 482 0.44 NM <1 <1 7 <50 NA NA <1 <10 <1 7 0.03 <1 1.36 11 <0.2 <25 <0.3 MW-23 08/03/1995 NM NM NM NM NM NM NM NM NM NA NA NA NA NA NA NA 13000 NA NA NA NA NA NA NA NA NA MW-23B 10/03/2011 6.9 5.00 22 247 NM 55 260 0.4 NM NA <5 NA 394 NA NA NA <50 NA 277 NA <10 NA NA NA 1990 NA MW-23B 01/16/2012 6.9 7.37 17 216 5.86 24 229 1.6 NM NA <5 NA 468 NA NA NA 168 NA 349 NA <10 NA NA NA 148 NA MW-23B 10/02/2012 6.2 6.44 23 339 0.59 40 245 2.07 NM <0.5 <5 35.2 1330 NA NA NA <50 <5 348 NA <10 NA NA <0.1 186 NA MW-23B DUP 10/02/2012 6.2 6.44 23 339 0.59 40 245 2.07 NM <0.5 <5 31.3 1370 NA NA NA <50 <5 354 NA <10 NA NA <0.1 192 NA MW-23B 03/12/2013 6.6 6.65 18 297 4.57 120 325 1.1 NM <1 <1 35 1100 NA NA NA 16 <1 157 NA 2.36 NA NA <0.2 210 NA MW-23B 06/12/2013 6.2 6.50 23 498 0.69 81 286 0.63 NM <1 <1 49 1830 NA NA NA 15 <1 133 NA 1.9 NA NA <0.2 330 NA MW-23B 10/02/2013 6.1 5.23 23 332 1.09 168 373 0.63 NM <1 <1 36 1140 NA NA NA <10 <1 59 NA 3.13 NA NA <0.2 220 NA MW-23B 03/04/2014 6.9 7.10 15 232 4.73 186 391 5.69 NM <1 <1 32 1020 NA NA NA 133 <1 49 NA 5.84 NA NA <0.2 170 NA MW-23B 06/02/2014 6.5 6.40 21 237 NM 127 332 1.4 NM <1 <1 28 758 NA NA NA 13 <1 13 NA 7.98 NA NA <0.2 140 NA MW-23B 06/03/2015 6.3 4.71 19 90 2.21 34 239 0.88 <0.5 NA NA NA NA NA 0.051 NA NA NA NA 0.123 NA NA 365 NA NA <0.3 MW-23B 11/18/2015 6.1 2.50 21 92 3.1 265 470 1.03 NM <1 <1 35 56 NA NA <1 <10 <1 6 0.51 2.08 1.28 335 <0.2 59 <0.3 MW-23B 12/04/2015 6.4 2.97 18 86 4.45 38 243 0.06 0 NA NA NA NA 0.12 NA NA NA NA NA NA NA NA NA NA NA NA MW-23B 03/08/2016 6.4 3.62 18 95 6.02 144 349 0.3 0 <1 <1 31 56 NA NA <1 <10 <1 6 0.71 2.31 1.53 333 <0.2 47 <0.3 MW-23B 06/15/2016 6.3 5.65 22 88 4.7 186 391 1.26 NM <1 <1 25 <50 NA NA <1 16 <1 8 0.35 1.97 1.29 285 <0.2 34 0.457 MW-23B DUP 06/15/2016 6.3 5.65 22 88 4.7 186 391 1.26 NM <1 <1 24 <50 NA NA <1 20 <1 8 0.35 1.91 1.28 279 <0.2 38 0.447 MW-24B 10/04/2011 6.8 3.83 20 561 12.7 -10 195 0.2 NM NA <5 NA 1350 NA NA NA <50 NA 377 NA 43.3 NA NA NA 328 NA MW-24B 01/17/2012 6.3 5.90 19 506 0.55 124 329 1.1 NM NA <5 NA 1500 NA NA NA <50 NA 725 NA 21.6 NA NA NA 331 NA MW-24B 10/03/2012 6.2 5.01 24 727 0.72 39 244 5.57 NM 1.1 <5 43.4 1420 NA NA NA 117 <5 805 NA <10 NA NA 0.42 391 NA MW-24B 03/13/2013 6.5 5.49 17 610 3.67 101 306 0.59 NM 1.07 <1 54 1270 NA NA NA 11 <1 396 NA <1 NA NA 0.586 360 NA MW-24B 06/12/2013 6.3 5.41 22 638 0.31 97 302 2.58 NM <1 <1 42 1190 NA NA NA 55 <1 388 NA <1 NA NA 0.468 380 NA MW-24B 10/02/2013 6.3 3.93 22 668 0.28 126 331 1.43 NM <1 <1 40 1130 NA NA NA 38 <1 464 NA <1 NA NA 0.57 380 NA MW-24B 03/05/2014 6.8 5.94 14 680 4.02 167 372 1.01 NM <1 <1 41 1180 NA NA NA 11 <1 55 NA <1 NA NA 0.23 370 NA MW-24B DUP 03/05/2014 6.8 5.94 14 680 4.02 167 372 1.01 NM <1 <1 39 1150 NA NA NA <10 <1 82 NA <1 NA NA 0.25 360 NA MW-24B 06/03/2014 6.6 5.30 22 604 NM 150 355 0.92 NM <1 <1 41 1140 NA NA NA 12 <1 19 NA <1 NA NA <0.2 350 NA MW-24B 10/01/2014 6.1 3.25 23 542 0.35 234 439 1.44 NM <1 <1 37 1050 NA NA NA 23 <1 183 NA <1 NA NA 0.445 320 NA MW-24B 06/02/2015 6.6 4.40 19 265 0.97 26 231 0.67 <0.5 <1 3.26 38 1030 NA 0.098 17.9 3560 <1 1040 0.015 <1 79.6 568 <0.2 140 0.555 MW-24B 06/15/2016 6.0 3.87 22 65 0.14 64 269 2.75 NM <1 <1 44 98 NA NA 2.08 942 <1 157 <0.023 <1 2.36 107 <0.2 <25 0.444 MW-27B 10/03/2011 6.5 4.30 20 579 NM 95 300 0.8 NM NA <5 NA 404 NA NA NA <50 NA 391 NA 22.7 NA NA NA 309 NA TABLE 4-7 UPPER SURFICIAL GROUNDWATER EXCEEDANCES INCORPORATING PROVISIONAL BACKGROUND L.V. SUTTON ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, WILMINGTON, NC P:\Duke Energy Progress.1026\108. Sutton Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 4-7 Upper Surficial GW Exceedances Inc Provisional BG.xlsx Page 4 of 5 pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Barium Boron Chromium (VI) Chromium (VI) Speciation Cobalt Iron Lead Manganese Nitrate (as N)Selenium Sodium Strontium Thallium Total Dissolved Solids Vanadium S.U.ft Deg C umhos /cm mg/L mV mV NTUs mg/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L mg-N/L ug/L mg/L ug/L ug/L mg/L ug/L 6.5-8.5 NE NE NE NE NE NE NE NE 1*10 700 700 0.07^0.07^1*300 15 50 10 20 NE NE 0.2*500 0.3* 3.9-5.4 NE NE NE NE NE NE NE NE NE NE 498 75.02 0.033 0.033+5.391 1488 NE 403 6.2 NE 7.51 61.46 0.494 716.5 6.463 Sample ID Sample Collection Date Analytical Parameter Field Parameters Analytical Results 15A NCAC 02L Standard Reporting Units Provisional Background MW-27B 01/18/2012 6.2 4.86 17 424 2.84 138 343 1.4 NM NA <5 NA 412 NA NA NA <50 NA 406 NA 25.3 NA NA NA 292 NA MW-27B 10/02/2012 5.6 4.60 22 459 1.07 112 317 2.32 NM <0.5 <5 49.3 466 NA NA NA <50 <5 229 NA 27.3 NA NA <0.1 240 NA MW-27B 03/13/2013 5.5 4.88 16 444 2.79 245 450 0.67 NM <1 <1 52 395 NA NA NA 10 <1 219 NA 37.1 NA NA <0.2 250 NA MW-27B 06/13/2013 5.0 4.45 22 432 0.5 185 390 2.74 NM <1 <1 49 403 NA NA NA 38 <1 168 NA 34.6 NA NA <0.2 250 NA MW-27B 10/02/2013 4.5 4.11 21 427 1.16 355 560 1.48 NM <1 <1 53 401 NA NA NA 21 <1 261 NA 48.2 NA NA <0.2 240 NA MW-27B 03/05/2014 5.2 4.95 13 455 1.97 228 433 1.17 NM <1 <1 48 414 NA NA NA 14 <1 237 NA 61.7 NA NA <0.2 260 NA MW-27B 06/02/2014 4.7 4.82 20 419 NM 320 525 0.39 NM <1 <1 47 403 NA NA NA 23 <1 153 NA 56.7 NA NA <0.2 250 NA MW-27B DUP 06/02/2014 4.7 4.82 20 419 NM 320 525 0.39 NM <1 <1 47 393 NA NA NA <10 <1 154 NA 59.6 NA NA <0.2 67 NA MW-27B 10/01/2014 4.3 3.88 22 382 1.97 231 436 0.81 NM <1 <1 44 388 NA NA NA <10 <1 150 NA 59.9 NA NA <0.2 230 NA MW-27B 03/10/2015 4.5 4.01 16 231 4.16 321 526 1.21 NM <1 <1 38 241 NA NA NA <10 <1 78 NA 36.2 NA NA <0.2 120 NA MW-27B 06/02/2015 4.7 4.39 21 196 4.81 151 356 2.67 <0.5 NA NA NA NA NA NA NA NA NA NA 1.3 NA NA 124 NA NA <0.3 MW-27B 10/13/2015 4.8 2.95 21 176 3.9 270 475 0.33 NM <1 <1 51 162 NA NA 1.89 <10 <1 58 1.1 21.2 11.8 129 <0.2 84 <0.3 MW-27B 03/08/2016 4.9 3.57 17 82 5.4 254 459 1.1 0 <1 <1 62 61 NA NA <1 12 <1 25 0.33 8.48 4.83 68 <0.2 37 <0.3 MW-27B 06/15/2016 4.9 4.35 22 86 2.99 323 528 0.61 NM <1 <1 62 71 NA NA 1.09 <10 <1 30 0.22 10.1 4.52 80 <0.2 41 <0.3 MW-28B 10/03/2011 7.6 22.50 22 254 NM 88 293 0.62 NM NA <5 NA <50 NA NA NA <50 NA 73.2 NA <10 NA NA NA 236 NA MW-28B 01/17/2012 7.2 24.03 20 175 2.95 104 309 1.3 NM NA <5 NA <50 NA NA NA <50 NA 89.4 NA <10 NA NA NA 112 NA MW-28B 06/01/2015 6.3 22.21 25 69 4.88 33 238 0.61 NM <1 <1 28 <50 NA NA <1 10 <1 10 0.27 <1 1.91 NA <0.2 40 NA MW-28B DUP 06/01/2015 6.3 22.21 25 69 4.88 33 238 0.61 NM <1 <1 29 <50 NA NA <1 10 <1 10 0.27 <1 1.97 NA <0.2 40 NA MW-28B 10/12/2015 6.7 19.33 22 72 5.9 116 321 0.66 NM <1 <1 29 <50 NA NA <1 <10 <1 11 0.24 <1 2.17 41 <0.2 25 <0.3 MW-28B 03/08/2016 6.2 21.38 20 53 6.49 151 356 0.7 0 <1 <1 27 <50 NA NA <1 <10 <1 11 0.22 <1 1.77 40 <0.2 28 <0.3 MW-28B 06/14/2016 6.3 22.65 25 52 5.95 178 383 2.15 NM <1 <1 31 <50 NA NA <1 49 <1 73 0.22 <1 1.63 41 <0.2 25 0.416 MW-31B 05/27/2014 5.7 NM 21 109 0.44 74 NM 9.95 NM <5.3 <6.8 33.6 268 NA NA NA 1390 <4.7 46.1 <25 <8.4 0.00884 243 <5.4 81.5 <2 MW-31B 04/29/2015 5.6 6.57 18 71 0.27 125 330 9.17 0.5 <1 <1 42 71 NA NA <1 902 <1 49 0.014 <1 2.98 139 <0.2 48 0.742 MW-31B 06/05/2015 6.0 5.85 19 61 0.22 42 247 6.94 0.5 <1 <1 35 <50 NA NA <1 1180 <1 73 0.01 <1 2.21 115 <0.2 40 0.378 MW-31B 12/04/2015 5.9 3.28 18 61 0.4 51 256 1.6 2.5 <1 <1 11 <50 <0.03 NA <1 4420 <1 36 <0.01 <1 2.97 70 <0.2 28 <0.3 MW-31B 01/13/2016 6.1 3.79 17 77 0.59 28 233 1.26 0 <1 <1 13 55 <0.03 NA <1 5020 <1 34 0.021 <1 3.37 79 <0.2 40 <0.3 MW-32 09/03/2004 NM NM NM NM NM NM NM NM NM NA NA NA NA NA NA NA 671 NA NA NA NA NA NA NA NA NA MW-33 07/03/2005 NM NM NM NM NM NM NM NM NM NA NA NA NA NA NA NA 450 NA NA NA NA NA NA NA NA NA MW-34B 05/27/2014 5.3 NM 21 324 0.34 116 NM 9.2 NM <5.3 <6.8 17.3 223 NA NA NA <400 <4.7 <10 1.1 <40 0.0281 230 <5.4 164 <2 MW-35B 05/28/2014 5.5 NM 20 112 4.16 88 NM 5.78 NM <5.3 <6.8 42 <100 NA NA NA <400 <4.7 24.7 <25 <8.4 0.0175 15.2 <5.4 88.5 <2 MW-36B 05/21/2014 6.5 NM 20 513 81.2 1 NM 5.86 NM <5.3 <6.8 153 528 NA NA NA <400 <4.7 NA 0.63 <40 0.0463 546 <5.4 316 <10 MW-36B 09/23/2015 6.6 9.30 20 175 3.2 171 376 7.16 NM 5.25 <1 42 211 NA NA <1 255 <1 <5 NA 13.5 7.11 250 0.462 NA 2.03 MW-36B 12/04/2015 6.7 6.01 19 126 4.12 106 311 9.47 0 5.05 <1 29 118 <0.03 NA <1 116 <1 <5 1.4 6.94 3.69 173 0.256 73 1.59 MW-36B 01/13/2016 6.6 7.66 17 114 3.35 195 400 2.1 0 5.1 <1 25 99 <0.03 NA <1 35 <1 <5 1.4 4.9 4.29 159 0.201 69 1.12 MW-38B 06/16/2016 4.9 5.91 22 44 4.87 161 366 0.74 0 <1 <1 32 <50 <0.03 NA <1 251 <1 36 0.223 <1 1.54 7 <0.2 25 0.378 B2 MW-39B 06/22/2016 5.9 12.71 21 66 0.2 -69 136 7 NM <1 <1 7 <50 <0.3 NA <1 5090 <1 72 0.04 <1 2.48 22 <0.2 54 2.04 MW-40B 06/17/2016 5.9 4.46 21 135 0.14 -151 54 3.56 3.5 <1 <1 34 99 <0.6 D3 NA 1.96 9280 <1 70 0.015 <1 6.01 93 0.252 72 0.314 PZ-25 05/27/2014 4.6 NM 19 22 8.6 131 NM 6.44 NM <5.3 <6.8 11.5 <100 NA NA NA <400 <4.7 11.2 <25 <8.4 <0.002 <10 <5.4 <30 <2 PZ-INT 05/20/2014 7.4 NM 20 997 0.07 -267 NM 1000 NM <5.3 275 925 4260 NA NA NA 9570 <30 184 <25 <40 0.0411 7240 <5.4 631 129 SMW-1B 04/27/2015 5.0 4.00 19 159 2.52 187 392 9.7 0.5 <1 <1 82 138 NA NA <1 591 <1 12 0.385 <1 8.56 40 <0.2 90 <0.3 TABLE 4-7 UPPER SURFICIAL GROUNDWATER EXCEEDANCES INCORPORATING PROVISIONAL BACKGROUND L.V. SUTTON ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, WILMINGTON, NC P:\Duke Energy Progress.1026\108. Sutton Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 4-7 Upper Surficial GW Exceedances Inc Provisional BG.xlsx Page 5 of 5 pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Barium Boron Chromium (VI) Chromium (VI) Speciation Cobalt Iron Lead Manganese Nitrate (as N)Selenium Sodium Strontium Thallium Total Dissolved Solids Vanadium S.U.ft Deg C umhos /cm mg/L mV mV NTUs mg/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L mg-N/L ug/L mg/L ug/L ug/L mg/L ug/L 6.5-8.5 NE NE NE NE NE NE NE NE 1*10 700 700 0.07^0.07^1*300 15 50 10 20 NE NE 0.2*500 0.3* 3.9-5.4 NE NE NE NE NE NE NE NE NE NE 498 75.02 0.033 0.033+5.391 1488 NE 403 6.2 NE 7.51 61.46 0.494 716.5 6.463 Sample ID Sample Collection Date Analytical Parameter Field Parameters Analytical Results 15A NCAC 02L Standard Reporting Units Provisional Background SMW-1B 06/05/2015 4.6 2.95 20 106 4.52 188 393 4.9 <0.5 <1 <1 78 100 NA NA <1 30 <1 14 0.441 <1 4.41 35 <0.2 57 <0.3 SMW-1B 12/03/2015 5.8 0.60 19 175 4.2 232 437 2.2 ND <1 <1 33 141 <0.03 NA <1 41 <1 <5 0.962 <1 8.89 74 <0.2 95 <0.3 SMW-1B 01/13/2016 5.6 1.30 17 234 4.6 195 400 1.9 0 <1 <1 39 175 <0.03 NA <1 69 <1 6 0.79 1.01 12.1 75 <0.2 120 <0.3 SMW-2B 03/26/2015 6.6 10.25 20 240 2.25 -105 100 7.99 2 <1 <1 30 <50 NA NA 1.77 11400 <1 235 0.241 <1 12.2 61 <0.2 130 2.35 SMW-2B 06/04/2015 6.4 9.60 22 281 0.43 26 231 3.9 NM <1 <1 61 <50 NA NA <1 28800 <1 413 0.054 <1 5.58 59 <0.2 140 1.42 SMW-2B 12/03/2015 6.3 7.35 19 207 0.3 -60 146 1.1 1.5 <1 <1 19 <50 0.035 NA <1 5990 <1 85 <0.01 <1 7.19 55 <0.2 100 2.25 SMW-2B 01/13/2016 6.3 8.19 18 203 0.2 22 227 6.2 3 <1 <1 12 <50 0.047 NA <1 2130 <1 48 0.01 <1 5.78 46 <0.2 140 1.59 SMW-3B 04/27/2015 5.6 9.04 20 308 0.3 176 381 8.76 0.3 <1 <1 46 <50 NA NA 1.42 1350 <1 57 14 <1 5.59 66 <0.2 200 0.324 SMW-3B 06/04/2015 5.5 7.80 21 342 0.29 113 318 3.2 1.5 <1 <1 53 50 NA 0.019 <1 1310 <1 91 15 <1 5.57 82 <0.2 250 <0.3 SMW-4B 04/28/2015 6.1 5.70 17 111 0.4 -68 137 6.44 1 <1 <1 28 <50 NA NA 1.17 1310 <1 73 <0.01 <1 7.64 33 <0.2 64 0.466 SMW-4B 06/05/2015 5.7 4.98 20 30 0.31 -60 145 1.8 4 <1 <1 17 <50 NA NA <1 7590 <1 85 0.039 <1 2.66 14 <0.2 42 <0.3 SMW-5B 04/28/2015 5.6 6.30 19 232 0.22 30 235 2.03 2.5 <1 1.7 36 87 NA NA <1 19700 <1 222 0.036 <1 6.4 75 <0.2 140 0.629 SMW-5B 06/05/2015 5.7 5.33 21 237 0.13 -8 197 4.68 2 <1 1.47 36 <50 NA NA <1 9910 <1 139 0.135 <1 3.6 65 <0.2 150 0.81 SMW-5B 01/14/2016 5.9 3.27 17 221 2.56 166 371 0.19 0 <1 <1 44 356 <0.03 NA <1 43 <1 43 0.048 <1 17.1 265 <0.2 120 0.639 SMW-6B 04/29/2015 5.2 6.10 17 127 0.7 163 368 2.38 0.8 <1 <1 45 68 NA NA <1 638 <1 44 0.513 <1 8.33 29 <0.2 82 <0.3 SMW-6B DUP 04/29/2015 5.2 6.10 17 127 0.7 163 368 2.38 0.8 <1 <1 44 61 NA NA <1 587 <1 43 0.53 <1 8.62 29 <0.2 72 <0.3 SMW-6B 06/03/2015 5.7 5.08 19 171 0.92 -29 176 0.46 <0.5 <1 <1 48 60 NA 0.022 <1 22 <1 30 0.8 <1 10.6 29 <0.2 83 <0.3 SMW-6B 01/14/2016 5.7 3.10 15 130 3.2 128 333 0.7 0 <1 <1 62 57 0.13 NA <1 14 <1 29 0.287 <1 8.52 38 <0.2 82 <0.3 Prepared by: BER Checked by: MCD Notes: ug/L = microgram per liter NTU = nephelometric turbidity unit mg/L = milligrams per liter Eh = Redox potential S.U. = Standard Unit mV = millivolts NE = Not Established umhos/cm = micro mhos per centimeter Deg C = Degree Celsius DUP = Duplicate DO = Dissolved Oxygen ft = feet Spec Cond = Specific Conductance ORP = Oxidation Reduction Potential ND = Not Detected Temp = Temperature NM = Not Measured NA = Not Analyzed mg - N/L = Milligram nitrogen per liter < = concentration not detected at or above the reporting limit. ^ = NC DHHS Health Screening Level * = Interim Maximum Allowable Concentrations (IMACs) of the 15A NCAC 02L Standard, Appendix 1, April, 1, 2013. B2 = Target analyte was detected in blank(s) at a concentration greater than 1/2 the reporting limit but less than the reporting limit. M1 = Matrix spike recovery exceeds QC limits. M2 = Matrix spike recovery was Low: the associated Laboratory Control Spike (LCS) was acceptable. - Concentration exceeds the 15A NCAC 02L Standard, Appendix 2, April 1, 2013 or provisional background concentration (whichever is greater). + = 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. TABLE 4-8 LOWER SURFICIAL GROUNDWATER EXCEEDANCES INCORPORATING PROVISIONAL BACKGROUND L.V. SUTTON ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, WILMINGTON, NC P:\Duke Energy Progress.1026\108. Sutton Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 4-8 Lower Surficial GW Exceedances Inc Provisional BG.xlsx Page 1 of 11 pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Boron Cadmium Chloride Chromium (VI) Chromium (VI) Speciation Chromium Cobalt Copper Iron Lead Manganese Selenium Sodium Strontium Sulfate Thallium Total Dissolved Solids Vanadium S.U.ft Deg C umhos /cm mg/L mV mV NTUs mg/L ug/L ug/L ug/L ug/L mg/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L mg/L ug/L mg/L ug/L mg/L ug/L 6.5-8.5 NE NE NE NE NE NE NE NE 1*10 700 2 250 0.07^0.07^10 1*1000 300 15 50 20 NE NE 250 0.2*500 0.3* 4.9-7.4 NE NE NE NE NE NE NE NE 0.14 7.416 60.74 NE 182.3 0.279 0.279+4.185 7.53 27.6 6583 0.24 1114 2.497 41.62 167 18.07 NE 338.8 1.705 Sample ID Sample Collection Date MW-4B 03/01/1990 7.0 7.03 NM NM NM NM NM NM NM NA 7 NA NA 4.91 NA NA NA NA NA 6500 NA NA 3 NA NA NA NA 140 NA MW-4B 07/01/1990 6.8 6.82 NM NM NM NM NM NM NM NA 7 NA NA 3.7 NA NA NA NA NA 4800 NA NA 2 NA NA NA NA 76 NA MW-4B 11/13/1990 6.8 6.37 NM NM NM NM NM NM NM NA 1 NA NA 3.8 NA NA NA NA NA 810 NA NA <1 NA NA NA NA 128 NA MW-4B 03/06/1991 6.8 8.01 NM NM NM NM NM NM NM NA 1 NA NA 5 NA NA NA NA NA 700 NA NA <1 NA NA NA NA 8 NA MW-4B 07/22/1991 6.0 6.26 NM NM NM NM NM NM NM NA 1 NA NA 3.6 NA NA NA NA NA 890 NA NA <1 NA NA NA NA 82 NA MW-4B 11/06/1991 6.6 7.17 NM NM NM NM NM NM NM NA 1 NA NA 4.1 NA NA NA NA NA 720 NA NA <1 NA NA NA NA 86 NA MW-4B 03/25/1992 7.1 6.01 NM NM NM NM NM NM NM NA 1 NA NA 3.9 NA NA NA NA NA 840 NA NA 1 NA NA NA NA 172 NA MW-4B 07/15/1992 6.7 7.59 NM NM NM NM NM NM NM NA 1 NA NA 3.9 NA NA NA NA NA 650 NA NA <1 NA NA NA NA 78 NA MW-4B 11/24/1992 6.7 7.62 NM NM NM NM NM NM NM NA <1 NA NA 3.7 NA NA NA NA NA 50 NA NA <1 NA NA NA NA 68 NA MW-4B 03/22/1993 6.3 8.57 NM NM NM NM NM NM NM NA 1 NA NA 3.8 NA NA NA NA NA 610 NA NA <1 NA NA NA NA 70 NA MW-4B 07/19/1993 6.6 6.69 NM NM NM NM NM NM NM NA 1 NA NA 3.8 NA NA NA NA NA 620 NA NA <1 NA NA NA NA 80 NA MW-4B 11/04/1993 6.6 7.86 NM NM NM NM NM NM NM NA 1 NA NA 3.55 NA NA NA NA NA 610 NA NA <1 NA NA NA NA 46 NA MW-4B 03/07/1994 6.7 9.18 NM NM NM NM NM NM NM NA 1 NA NA 3.75 NA NA NA NA NA 550 NA NA <1 NA NA NA NA 80 NA MW-4B 07/11/1994 6.6 5.93 NM NM NM NM NM NM NM NA 1 NA NA 3.55 NA NA NA NA NA 500 NA NA <1 NA NA NA NA 64 NA MW-4B 11/02/1994 6.3 8.00 NM NM NM NM NM NM NM NA <1 NA NA 3.3 NA NA NA NA NA 600 NA NA <1 NA NA NA NA 65 NA MW-4B 03/08/1995 7.1 8.29 NM NM NM NM NM NM NM NA 9.8 NA NA 3.2 NA NA NA NA NA 9700 NA NA 8 NA NA NA NA 86 NA MW-4B 03/06/1996 7.4 9.76 NM NM NM NM NM NM NM NA 4.2 NA NA 4.5 NA NA NA NA NA 5700 NA NA <1 NA NA NA NA 115 NA MW-4B 03/17/1997 6.4 7.98 NM NM NM NM NM NM NM NA 3.4 NA NA 3.8 NA NA NA NA NA 3200 NA NA 2 NA NA NA NA 94 NA MW-4B 03/16/1998 6.8 6.93 NM NM NM NM NM NM NM NA <5 NA NA 4.42 NA NA NA NA NA 907 NA NA <5 NA NA NA NA 70 NA MW-4B 03/17/1999 6.7 9.75 NM NM NM NM NM NM NM NA <5 NA NA 7.6 NA NA NA NA NA 1470 NA NA 17 NA NA NA NA 81.5 NA MW-4B 03/06/2000 6.6 8.77 NM NM NM NM NM NM NM NA <5 NA NA 6.75 NA NA NA NA NA 1070 NA NA <5 NA NA NA NA 78 NA MW-4B 03/16/2001 6.7 9.73 NM NM NM NM NM NM NM NA <5 NA NA 11.8 NA NA NA NA NA 536 NA NA <5 NA NA NA NA 75 NA MW-4B 03/06/2002 7.2 10.78 NM NM NM NM NM NM NM NA <5 NA NA 6.65 NA NA NA NA NA 755 NA NA <5 NA NA NA NA 67 NA MW-4B 03/18/2003 6.2 10.20 NM NM NM NM NM NM NM NA <5 NA NA 8.68 NA NA NA NA NA 989 NA NA <5 NA NA NA NA 70 NA MW-4B 03/09/2004 6.8 8.15 NM NM NM NM NM NM NM NA <5 NA NA 4.8 NA NA NA NA NA 627 NA NA <5 NA NA NA NA 77 NA MW-4B 03/07/2005 6.9 10.06 NM NM NM NM NM NM NM NA <5 NA NA 5.2 NA NA NA NA NA 741 NA NA <5 NA NA NA NA 72 NA MW-4B 03/02/2006 6.1 8.00 NM NM NM NM NM NM NM NA <5 NA NA 5.7 NA NA NA NA NA 588 NA NA <5 NA NA NA NA 74 NA MW-4B 12/12/2006 7.1 8.10 18 124 NM NM NM NM NM 0.14 0.28 12.5 <0.24 3.28 NA NA 0.61 NA 27.6 597 0.24 23 <0.14 NA NA 7.75 <0.014 53 NA MW-4B 03/06/2007 6.7 8.59 19 NM NM NM NM NM NM <3 2 10 <1 5 NA NA <5 NA <5 607 <3 22 <5 NA NA 8 <1 80 NA MW-4B 11/07/2007 6.4 11.32 NM 108 NM NM NM NM NM <2.5 <1 17 <1 7 NA NA <5 NA <5 623 <5 18 <5 NA NA 12 <1 62 NA MW-4B 03/11/2008 6.4 10.80 20 117 NM NM NM NM NM <2.5 2 19 <1 7 NA NA <5 NA <5 486 <5 16 <5 NA NA 7 <1 93 NA MW-4B 11/06/2008 6.7 10.16 20 115 NM NM NM NM NM <2 <2 <5 <1 5 NA NA <5 NA <5 405 <5 14 <5 NA NA <10 <1 74 NA MW-4B 03/10/2009 6.7 10.35 19 120 NM NM NM NM NM <40 <2 30 <10 5 NA NA <10 NA <10 751 <10 29 <20 NA NA 8 <10 61 NA MW-4B 10/06/2009 6.6 9.05 20 122 NM NM NM NM NM <5 <5 <20 <5 5 NA NA <5 NA <5 517 <5 20 <5 NA NA 9 <5 72 NA MW-4B 03/10/2010 6.8 8.54 20 132 NM NM NM NM NM <1 <1 10 <1 6 NA NA 3 NA <1 516 <1 18 <1 NA NA 9 <1 87 NA MW-4B 11/11/2010 6.7 7.93 20 129 NM NM NM NM NM <0.5 <5 <50 <0.08 6.2 NA NA <5 NA <5 417 <5 25.6 <10 NA NA 9.3 <0.1 68 NA MW-4B 03/02/2011 7.0 9.10 15 197 0.3 -68 137 1.64 NM <0.5 <5 <50 <0.08 29.6 b NA NA <5 NA <5 763 <5 33 <10 NA NA 7.9 b <0.1 116 b NA MW-4B 10/04/2011 6.9 10.81 19 224 0.51 -90 115 2.21 NM <0.5 <5 <50 <0.08 8.8 NA NA <5 NA <5 1250 <5 42.5 <10 NA NA 7.1 <0.1 105 NA MW-4B 03/06/2012 6.8 13.96 18 246 1.43 -113 92 0.55 NM <0.5 <5 <50 <0.08 12.7 NA NA <5 NA <5 1460 <5 44.3 <10 NA NA 6.9 <0.1 168 NA MW-4B 06/05/2012 6.8 12.33 19 274 1.16 -75 131 3.97 NM <0.5 <5 <50 <0.08 11.8 NA NA <5 NA <5 1100 <5 52.3 <10 NA NA 8.9 <0.1 153 NA MW-4B 10/02/2012 7.2 11.40 21 286 0.6 -105 100 0.94 NM <0.5 <5 <50 <0.08 10.8 NA NA <5 NA <5 1470 <5 49.1 <10 NA NA 8.5 <0.1 145 NA MW-4B 03/12/2013 7.0 10.74 18 236 0.36 -90 115 4.9 NM <1 <1 <50 <1 8.7 NA NA <5 NA <5 1650 <1 46 <1 NA NA 8.1 <0.2 140 NA MW-4B 06/12/2013 6.9 10.23 20 244 1 40 245 2.6 NM <1 <1 <50 <1 9 NA NA <5 NA <5 570 <1 16 <1 NA NA 8.8 <0.2 130 NA MW-4B 10/02/2013 7.4 9.72 21 323 0.33 -148 57 1 NM <1 <1 <50 <1 11 NA NA <5 NA <5 1720 <1 62 <1 NA NA 8.1 <0.2 180 NA MW-4B 03/04/2014 7.1 10.42 15 251 0.39 26 231 1.2 NM <1 <1 <50 <1 11 NA NA <5 NA <5 2020 <1 62 <1 NA NA 8.8 <0.2 180 NA MW-4B 06/02/2014 7.3 9.62 22 309 NM 12 217 6 NM <1 <1 <50 <1 10 NA NA <5 NA <5 891 <1 29 <1 NA NA 8.6 <0.2 170 NA MW-4B 10/01/2014 6.8 8.21 23 375 0.42 -122 83 2.7 NM <1 <1 <50 <1 12 NA NA <5 NA <5 2840 <1 80 <1 NA NA 9.4 <0.2 210 NA MW-4B 03/11/2015 7.0 8.46 18 368 0.2 -86 119 5.3 NM <1 <1 <50 <1 12 NA NA <5 NA <5 2940 <1 81 <1 NA NA 9.3 <0.2 180 NA MW-4B 06/01/2015 6.8 8.79 22 385 0.6 -43 162 9.98 NM <1 <1 <50 <1 13 NA NA <5 <1 <5 1280 <1 59 <1 5.61 NA 10 <0.2 210 NA Reporting Units Analytical Parameter Field Parameters Analytical Results Background Provisional Background 15A NCAC 02L Standard TABLE 4-8 LOWER SURFICIAL GROUNDWATER EXCEEDANCES INCORPORATING PROVISIONAL BACKGROUND L.V. SUTTON ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, WILMINGTON, NC P:\Duke Energy Progress.1026\108. Sutton Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 4-8 Lower Surficial GW Exceedances Inc Provisional BG.xlsx Page 2 of 11 pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Boron Cadmium Chloride Chromium (VI) Chromium (VI) Speciation Chromium Cobalt Copper Iron Lead Manganese Selenium Sodium Strontium Sulfate Thallium Total Dissolved Solids Vanadium S.U.ft Deg C umhos /cm mg/L mV mV NTUs mg/L ug/L ug/L ug/L ug/L mg/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L mg/L ug/L mg/L ug/L mg/L ug/L 6.5-8.5 NE NE NE NE NE NE NE NE 1*10 700 2 250 0.07^0.07^10 1*1000 300 15 50 20 NE NE 250 0.2*500 0.3* 4.9-7.4 NE NE NE NE NE NE NE NE 0.14 7.416 60.74 NE 182.3 0.279 0.279+4.185 7.53 27.6 6583 0.24 1114 2.497 41.62 167 18.07 NE 338.8 1.705 Sample ID Sample Collection Date Reporting Units Analytical Parameter Field Parameters Analytical Results Provisional Background 15A NCAC 02L Standard MW-4B 10/12/2015 7.1 5.38 21 430 0.3 -124 81 3.95 NM <1 <1 <50 <1 13 NA NA <5 <1 <5 3920 <1 110 <1 6.7 167 10 <0.2 230 <0.3 MW-4B 12/04/2015 7.0 7.61 18 405 0.5 -94 111 4.25 1.5 <1 <1 <50 <1 13 <0.03 NA <1 <1 <1 3790 <1 97 <1 6.38 142 11 <0.2 210 <0.3 MW-4B 01/13/2016 6.9 7.90 17 395 0.5 -86 119 1.54 2.5 <1 <1 <50 <1 13 <0.03 NA <1 <1 <1 3400 <1 94 <1 6.63 140 11 <0.2 220 <0.3 MW-4B DUP 01/13/2016 6.9 7.90 17 395 0.5 -86 119 1.54 2.5 <1 <1 <50 <1 12 <0.03 NA <1 <1 <1 3160 <1 86 <1 6.25 125 9.9 <0.2 180 <0.3 MW-4B 03/08/2016 6.9 7.88 19 446 0.34 -78 127 4.1 2 <1 <1 <50 <1 12 <0.03 NA <5 <1 <5 3900 <1 102 <1 6.73 146 10 <0.2 200 <0.3 MW-4B 06/14/2016 6.9 9.13 23 500 0.3 -176 29 3.62 NM <1 <1 <50 <1 14 NA NA <5 <1 <5 4010 <1 122 <1 7.13 171 12 <0.2 260 <0.3 MW-5C 03/01/1990 NM NM NM NM NM NM NM NM NM NA 1 NA NA 295 NA NA NA NA NA 630 NA NA <1 NA NA NA NA 500 NA MW-5C 07/01/1990 NM NM NM NM NM NM NM NM NM NA 1 NA NA 270 NA NA NA NA NA 430 NA NA <1 NA NA NA NA 464 NA MW-5C 11/13/1990 NM NM NM NM NM NM NM NM NM NA <1 NA NA 205 NA NA NA NA NA 110 NA NA <1 NA NA NA NA 472 NA MW-5C 03/06/1991 NM NM NM NM NM NM NM NM NM NA <1 NA NA 190 NA NA NA NA NA <50 NA NA <1 NA NA NA NA 336 NA MW-5C 07/22/1991 NM NM NM NM NM NM NM NM NM NA <1 NA NA 176.7 NA NA NA NA NA 90 NA NA <1 NA NA NA NA 308 NA MW-5C 11/06/1991 NM NM NM NM NM NM NM NM NM NA 1 NA NA 184.2 NA NA NA NA NA 120 NA NA <1 NA NA NA NA 340 NA MW-5C 03/25/1992 NM NM NM NM NM NM NM NM NM NA <1 NA NA 170.2 NA NA NA NA NA 50 NA NA <1 NA NA NA NA 384 NA MW-5C 07/15/1992 NM NM NM NM NM NM NM NM NM NA <1 NA NA 175 NA NA NA NA NA 110 NA NA <1 NA NA NA NA 332 NA MW-5C 11/24/1992 NM NM NM NM NM NM NM NM NM NA <1 NA NA 169.7 NA NA NA NA NA 50 NA NA <1 NA NA NA NA 328 NA MW-5C 03/22/1993 NM NM NM NM NM NM NM NM NM NA <1 NA NA 141.7 NA NA NA NA NA 70 NA NA <1 NA NA NA NA 252 NA MW-5C 07/19/1993 NM NM NM NM NM NM NM NM NM NA <1 NA NA 116.6 NA NA NA NA NA 110 NA NA <1 NA NA NA NA 260 NA MW-5C 11/04/1993 NM NM NM NM NM NM NM NM NM NA <1 NA NA 114.1 NA NA NA NA NA 90 NA NA <1 NA NA NA NA 120 NA MW-5C 03/07/1994 NM NM NM NM NM NM NM NM NM NA <1 NA NA 124.1 NA NA NA NA NA 70 NA NA <1 NA NA NA NA 272 NA MW-5C 07/11/1994 NM NM NM NM NM NM NM NM NM NA <1 NA NA 120.6 NA NA NA NA NA 60 NA NA <1 NA NA NA NA 284 NA MW-5C 11/02/1994 NM NM NM NM NM NM NM NM NM NA <1 NA NA 130 NA NA NA NA NA 90 NA NA <1 NA NA NA NA 249 NA MW-5C 03/08/1995 NM NM NM NM NM NM NM NM NM NA <1 NA NA 140 NA NA NA NA NA 1200 NA NA <1 NA NA NA NA 297 NA MW-5C 03/06/1996 NM NM NM NM NM NM NM NM NM NA <1 NA NA 130 NA NA NA NA NA <100 NA NA <1 NA NA NA NA 267 NA MW-5C 03/17/1997 NM NM NM NM NM NM NM NM NM NA <1 NA NA 93 NA NA NA NA NA 350 NA NA <1 NA NA NA NA 162 NA MW-5C 03/16/1998 NM NM NM NM NM NM NM NM NM NA <5 NA NA 82 NA NA NA NA NA 11 NA NA <5 NA NA NA NA 198 NA MW-5C 03/17/1999 NM NM NM NM NM NM NM NM NM NA <5 NA NA 81.7 NA NA NA NA NA 159 NA NA <5 NA NA NA NA 224 NA MW-5C 03/06/2000 NM NM NM NM NM NM NM NM NM NA <5 NA NA 40.2 NA NA NA NA NA 46 NA NA <5 NA NA NA NA 114 NA MW-5C 03/16/2001 5.9 5.43 NM NM NM NM NM NM NM NA <5 NA NA 47.3 NA NA NA NA NA 285 NA NA <5 NA NA NA NA 111 NA MW-5C 03/06/2002 5.8 5.54 NM NM NM NM NM NM NM NA <5 NA NA 39.7 NA NA NA NA NA 127 NA NA <5 NA NA NA NA 253 NA MW-5C 03/18/2003 5.8 4.96 NM NM NM NM NM NM NM NA <5 NA NA 34.9 NA NA NA NA NA 14 NA NA <5 NA NA NA NA 81 NA MW-5C 03/09/2004 5.8 3.74 NM NM NM NM NM NM NM NA <5 NA NA 22.3 NA NA NA NA NA 373 NA NA <5 NA NA NA NA 70 NA MW-5C 03/07/2005 5.7 4.25 NM NM NM NM NM NM NM NA <5 NA NA 16.2 NA NA NA NA NA 122 NA NA <5 NA NA NA NA 52 NA MW-5C 03/02/2006 5.7 3.62 NM NM NM NM NM NM NM NA <5 NA NA 29.9 NA NA NA NA NA 115 NA NA <5 NA NA NA NA 105 NA MW-5C 03/06/2007 5.6 3.94 NM NM NM NM NM NM NM NA <1 NA NA 32 NA NA NA NA NA 129 NA NA <5 NA NA NA NA 88 NA MW-5C 03/11/2008 5.1 4.45 NM NM NM NM NM NM NM NA <2 NA NA 24 NA NA NA NA NA 2210 NA NA <5 NA NA NA NA 74 NA MW-5C 03/10/2009 5.4 4.24 NM NM NM NM NM NM NM NA <2 NA NA 21 NA NA NA NA NA <100 NA NA <20 NA NA NA NA 78 NA MW-5C 03/10/2010 5.7 6.25 NM NM NM NM NM NM NM NA <5 NA NA 23 NA NA NA NA NA 12 NA NA <10 NA NA NA NA 93 NA MW-5C 03/02/2011 5.1 3.99 18 88 1.28 189 394 1.47 NM NA <5 NA NA 23 b NA NA NA NA NA 72 NA NA <10 NA NA NA NA 78 b NA MW-5C 03/07/2012 5.4 4.19 19 156 0.96 -92 113 2.03 NM <0.5 <5 <50 <0.08 16.2 NA NA <5 NA <5 56.9 <5 336 <10 NA NA 7.8 <0.1 59 NA MW-5C 06/06/2012 5.5 4.23 20 102 1.66 -72 133 1.13 NM <0.5 <5 <50 <0.08 14.2 NA NA <5 NA <5 <50 <5 193 <10 NA NA 8.8 <0.1 52 NA MW-5C 10/02/2012 5.7 4.43 22 158 0.63 169 374 0.77 NM <0.5 <5 <50 0.1 22.4 NA NA <5 NA <5 <50 <5 447 <10 NA NA 11.9 <0.1 59 NA MW-5C 03/13/2013 5.5 4.42 17 80 0.87 195 400 1.18 NM <1 <1 <50 <1 12 NA NA <5 NA <5 26 <1 222 <1 NA NA 9.6 <0.2 47 NA MW-5C 06/13/2013 4.9 4.16 22 85 0.74 253 458 0.8 NM <1 <1 <50 <1 74 NA NA <5 NA <5 28 <1 130 <1 NA NA 74 <0.2 56 NA MW-5C 10/03/2013 5.7 3.91 23 127 0.31 251 456 0.72 NM <1 <1 <50 <1 18 NA NA <5 NA <5 26 <1 602 <1 NA NA 13 <0.2 72 NA MW-5C 03/05/2014 6.0 4.62 15 85 6.06 236 441 1.08 NM <1 <1 <50 <1 12 NA NA <5 NA <5 21 <1 111 <1 NA NA 8.8 <0.2 50 NA MW-5C 06/03/2014 5.8 4.40 21 115 NM 211 416 3 NM <1 <1 <50 <1 16 NA NA <5 NA <5 34 <1 441 <1 NA NA 11 <0.2 65 NA MW-5C 10/02/2014 5.5 3.66 24 124 0.41 237 442 0.93 NM <1 <1 <50 <1 18 NA NA <5 NA <5 23 <1 554 <1 NA NA 12 <0.2 63 NA MW-5C 03/10/2015 5.6 3.69 18 131 0.31 212 417 1.07 NM <1 <1 <50 <1 18 NA NA <5 NA <5 13 <1 535 <1 NA NA 12 <0.2 57 NA MW-5C DUP 03/10/2015 5.6 3.69 18 131 0.31 212 417 1.07 NM <1 <1 <50 <1 18 NA NA <5 NA <5 12 <1 516 <1 NA NA 12 <0.2 60 NA MW-5C 06/01/2015 5.5 4.00 21 135 0.97 212 417 1.03 NM <1 <1 <50 <1 21 NA NA <5 1.62 <5 <10 <1 441 <1 14.5 NA 14 <0.2 69 NA TABLE 4-8 LOWER SURFICIAL GROUNDWATER EXCEEDANCES INCORPORATING PROVISIONAL BACKGROUND L.V. SUTTON ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, WILMINGTON, NC P:\Duke Energy Progress.1026\108. Sutton Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 4-8 Lower Surficial GW Exceedances Inc Provisional BG.xlsx Page 3 of 11 pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Boron Cadmium Chloride Chromium (VI) Chromium (VI) Speciation Chromium Cobalt Copper Iron Lead Manganese Selenium Sodium Strontium Sulfate Thallium Total Dissolved Solids Vanadium S.U.ft Deg C umhos /cm mg/L mV mV NTUs mg/L ug/L ug/L ug/L ug/L mg/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L mg/L ug/L mg/L ug/L mg/L ug/L 6.5-8.5 NE NE NE NE NE NE NE NE 1*10 700 2 250 0.07^0.07^10 1*1000 300 15 50 20 NE NE 250 0.2*500 0.3* 4.9-7.4 NE NE NE NE NE NE NE NE 0.14 7.416 60.74 NE 182.3 0.279 0.279+4.185 7.53 27.6 6583 0.24 1114 2.497 41.62 167 18.07 NE 338.8 1.705 Sample ID Sample Collection Date Reporting Units Analytical Parameter Field Parameters Analytical Results Provisional Background 15A NCAC 02L Standard MW-5C 11/18/2015 5.7 3.35 21 122 0.8 222 427 0.58 NM <1 <1 <50 <1 18 NA NA <5 1.48 <5 <10 <1 412 <1 13.3 24 14 <0.2 78 <0.3 MW-5C 12/04/2015 5.7 3.32 18 102 1.3 189 394 1.4 ND <1 <1 <50 <1 15 0.19 NA <1 2.21 <1 21 <1 212 <1 11.5 23 11 <0.2 56 <0.3 MW-5C 01/13/2016 5.9 3.48 18 129 0.45 244 449 1.03 0 <1 <1 <50 <1 17 <0.03 NA <1 3.04 <1 14 <1 402 <1 13.4 23 14 <0.2 66 <0.3 MW-5C 03/08/2016 5.7 3.53 19 111 0.94 141 346 0.9 0 <1 <1 <50 <1 2.6 0.037 NA <5 1.87 <5 21 <1 187 <1 12.3 21 15 <0.2 62 <0.3 MW-5C 06/15/2016 5.4 4.30 22 106 0.85 217 422 0.52 NM <1 <1 <50 <1 15 0.075 NA <5 <1 <5 12 <1 89 <1 12 20 16 <0.2 48 0.384 MW-37C 03/27/2015 5.8 15.56 17 129 0.38 -44 161 6.36 2.25 <1 2.93 <50 <1 4.2 NA NA <1 2.99 <1 9500 <1 233 <1 3.16 20 10 <0.2 78 1.15 MW-37C 06/02/2015 5.7 15.70 20 120 0.36 20 225 19 4.5 <1 3.3 <50 <1 3.5 NA NA <1 2.73 <1 9580 <1 244 <1 2.64 18 9.8 <0.2 81 1.22 MW-37C 10/12/2015 5.9 12.45 21 117 0.39 16 221 1.17 NM <1 2.83 <50 <1 3.5 NA NA <5 1.93 <5 8830 <1 155 <1 2.51 17 8.4 <0.2 65 1 MW-37C 12/03/2015 6.1 14.65 19 102 0.3 16 221 0.27 3 <1 2.64 <50 <1 3.3 <0.03 NA <1 1.63 <1 7390 <1 103 <1 2.01 15 6 <0.2 46 0.918 MW-37C 01/13/2016 6.2 14.90 17 91 0.59 -11 194 1.68 3 <1 2.45 <50 <1 3.3 <0.03 NA <1 1.56 <1 6610 <1 82 <1 1.88 14 5.5 <0.2 52 0.986 MW-37C 03/08/2016 6.1 14.88 19 82 0.32 10 215 1 2 <1 2.34 <50 <1 3 <0.03 NA <5 1.28 <5 6010 <1 72 <1 1.79 12 5.8 <0.2 46 1.06 MW-37C 06/14/2016 6.0 15.99 21 126 0.18 -47 157 0.97 NM <1 2.46 <50 <1 3.7 <0.09 D3 NA <5 2.04 <5 9410 <1 250 <1 2.45 20 8.5 <0.2 77 1.09 ABMW-2D 04/27/2015 7.2 5.35 18 534 0.4 -144 61 1.86 1.2 <1 172 559 <1 42 NA NA <1 <1 <1 1380 <1 144 <1 45.7 1160 90 <0.2 310 0.613 ABMW-2D 06/04/2015 8.2 4.55 21 529 0.32 -152 53 1.28 NM <1 170 600 <1 43 NA 0.022 <1 <1 <1 1270 <1 150 <1 45.8 1230 91 <0.2 300 <0.3 ABMW-2D 12/04/2015 7.3 5.21 20 510 0.3 -94 111 0.64 1.5 <1 172 682 <1 43 <0.03 NA <1 2.68 <1 1290 <1 135 <1 44.8 1190 89 <0.2 300 0.687 ABMW-2D 01/13/2016 7.3 4.99 19 493 0.32 -96 110 3.2 1.5 <1 158 677 <1 44 <0.03 NA <1 2.69 <1 1300 <1 131 <1 44 1150 91 <0.2 310 0.67 AW-1C 02/06/2015 5.8 8.68 15 194 0.15 -58 148 6.83 2 <1 <1 120 <1 38 NA NA <1 5.07 <1 1700 <1 320 2.44 21.5 77 28 <0.2 110 <0.3 AW-1C 06/02/2015 4.8 8.95 22 97 0.5 130 335 4.93 <0.5 <1 <1 98 <1 29 NA NA <1 <1 <1 470 <1 179 2.6 16.4 62 32 <0.2 84 <0.3 AW-2C 02/05/2015 6.7 18.65 18 762 1.7 -444 -239 8.43 6 <1 <1 <50 <1 5.1 NA NA <1 2.01 3.84 16200 <1 401 <1 3.26 20 15 <0.2 42 <0.3 AW-2C 06/03/2015 5.9 19.25 20 60 0.6 77 282 2.69 4 <1 <1 <50 <1 4.7 NA <0.007 <1 <1 <1 7610 <1 57 <1 2.78 12 3 <0.2 38 <0.3 AW-3C 02/05/2015 6.2 8.99 18 816 0.12 -476 -271 9.2 3.5 <1 <1 1090 <1 130 NA NA <1 23.8 <1 26600 <1 2120 <1 75.3 537 110 <0.2 450 <0.3 AW-3C 06/11/2015 5.9 9.33 20 874 0.1 -67 138 1.61 2.5 <1 1.54 1370 <1 160 NA NA <1 6.91 <1 11300 <1 1830 <1 91.1 672 140 <0.2 510 0.75 AW-4C 02/05/2015 7.4 9.89 18 518 0.04 -579 -374 8.71 4.5 <1 <1 1160 <1 37 NA NA 1.16 24.5 <1 15100 <1 1270 <1 32.7 672 110 <0.2 300 0.85 AW-4C 06/05/2015 6.2 10.18 20 525 0.36 -47 158 14.7 4.5 <1 <1 1450 <1 49 NA NA <1 <1 <1 3990 <1 787 <1 39.4 877 120 <0.2 310 0.518 AW-4C 09/22/2015 5.9 10.38 21 573 0.2 -25 180 7.13 NM <1 <1 1270 <1 NA NA NA 1.65 6.15 <1 4950 <1 801 <1 44.6 693 NA <0.2 NA 2.04 AW-4C 12/04/2015 5.6 7.94 20 538 0.29 -21 184 0.01 1 <1 <1 1310 <1 55 <0.03 NA <1 6.15 <1 1400 <1 742 <1 44.6 876 150 <0.2 320 0.557 AW-4C 01/13/2016 5.6 8.60 13 523 0.34 28 233 0.92 0 <1 <1 1260 <1 57 <0.03 NA <1 7.09 <1 1170 <1 718 <1 43.7 858 160 <0.2 310 0.656 AW-5C 03/24/2015 4.7 16.46 19 76 1.35 152 357 3.45 0 <1 <1 90 <1 5 NA NA <1 <1 <1 138 <1 25 <1 2.97 26 26 <0.2 33 <0.3 AW-5C 06/03/2015 4.7 16.29 20 69 1.54 305 510 1.99 0 <1 <1 69 <1 4 NA 0.019 <1 <1 <1 128 <1 21 <1 2.53 25 23 <0.2 40 <0.3 AW-5C 12/03/2015 5.1 14.01 19 59 2.28 281 486 0.18 0 <1 <1 <50 <1 3.4 <0.03 M1 NA <1 <1 <1 51 <1 17 <1 2.11 34 15 <0.2 <25 <0.3 AW-5C 01/13/2016 4.7 14.67 14 57 2.8 290 495 1.4 0 <1 <1 <50 <1 3.2 <0.03 NA <1 <1 <1 65 <1 17 <1 1.93 28 16 <0.2 31 <0.3 AW-8C 03/25/2015 5.7 6.59 19 88 0.66 71 276 2.27 0 <1 <1 <50 <1 7.5 NA NA <1 2.26 <1 291 <1 57 <1 4.92 37 14 <0.2 43 <0.3 AW-8C 06/02/2015 4.4 6.80 22 62 3.31 144 349 3.28 <0.5 <1 <1 <50 <1 6.5 NA NA <1 1.19 <1 61 <1 23 <1 4.29 23 21 <0.2 30 <0.3 AW-8C 09/22/2015 5.6 7.76 23 68 3.13 107 312 5.67 NM <1 <1 <50 <1 NA NA NA <1 1.33 <1 487 <1 30 <1 5.6 31 NA <0.2 NA 0.877 AW-8C 12/03/2015 5.2 6.00 19 67 3.05 383 588 5.85 NM <1 <1 <50 <1 9.7 0.048 NA <1 <1 <1 376 <1 24 <1 5.66 31 10 <0.2 31 0.577 AW-8C 01/13/2016 5.2 5.93 18 73 2.79 285 490 4.11 0 <1 <1 <50 <1 11 0.044 NA <1 <1 <1 131 <1 21 <1 6.06 33 14 <0.2 32 <0.3 AW-9C 02/06/2015 5.8 8.31 16 383 0.15 -409 -204 9.91 4 <1 <1 611 <1 38 NA NA <1 8.19 <1 8190 <1 466 <1 30.2 246 97 <0.2 210 0.52 AW-9C 06/04/2015 5.1 8.25 21 314 0.92 204 409 2.34 NM <1 <1 554 <1 31 NA 0.046 <1 1.13 <1 102 <1 289 <1 24.4 193 99 <0.2 190 <0.3 AW-9C 09/23/2015 5.0 9.11 22 457 1.17 161 366 1.86 NM <1 <1 367 <1 NA NA NA <1 <1 <1 88 <1 164 <1 18.2 126 NA <0.2 NA 0.412 AW-9C 12/03/2015 5.1 7.41 19 123 4.2 200 405 3.74 0 <1 <1 149 <1 7.7 NA NA <1 <1 <1 98 <1 71 <1 7.39 67 29 <0.2 67 0.329 AW-9C DUP 12/03/2015 5.1 7.41 19 123 4.2 200 405 3.74 0 <1 <1 147 <1 7.9 NA NA <1 <1 <1 76 <1 71 <1 7.41 67 29 <0.2 53 0.326 AW-9C 01/13/2016 5.4 7.76 19 122 4.56 95 300 7.49 0 <1 <1 152 <1 11 <0.03 NA <1 <1 <1 155 <1 67 <1 8.28 72 32 <0.2 66 0.357 MW-2C 11/06/1991 5.9 9.69 NM NM NM NM NM NM NM NA <1 NA NA 56.1 NA NA NA NA NA 2200 NA NA 18 NA NA NA NA 296 NA MW-2C 03/25/1992 6.4 9.52 NM NM NM NM NM NM NM NA <1 NA NA 40.5 NA NA NA NA NA 1000 NA NA 2 NA NA NA NA 200 NA MW-2C 07/15/1992 6.2 10.81 NM NM NM NM NM NM NM NA <1 NA NA 42 NA NA NA NA NA 900 NA NA <1 NA NA NA NA 184 NA MW-2C 11/24/1992 6.2 10.74 NM NM NM NM NM NM NM NA <1 NA NA 39.5 NA NA NA NA NA 1700 NA NA <1 NA NA NA NA 200 NA MW-2C 03/22/1993 6.1 11.63 NM NM NM NM NM NM NM NA <1 NA NA 52.6 NA NA NA NA NA 2300 NA NA 10 NA NA NA NA 384 NA MW-2C 07/19/1993 6.2 10.49 NM NM NM NM NM NM NM NA <1 NA NA 52.6 NA NA NA NA NA 1800 NA NA 1 NA NA NA NA 448 NA MW-2C 11/04/1993 6.3 10.74 NM NM NM NM NM NM NM NA <1 NA NA 44 NA NA NA NA NA 900 NA NA 1 NA NA NA NA 184 NA Surficial Lower TABLE 4-8 LOWER SURFICIAL GROUNDWATER EXCEEDANCES INCORPORATING PROVISIONAL BACKGROUND L.V. SUTTON ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, WILMINGTON, NC P:\Duke Energy Progress.1026\108. Sutton Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 4-8 Lower Surficial GW Exceedances Inc Provisional BG.xlsx Page 4 of 11 pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Boron Cadmium Chloride Chromium (VI) Chromium (VI) Speciation Chromium Cobalt Copper Iron Lead Manganese Selenium Sodium Strontium Sulfate Thallium Total Dissolved Solids Vanadium S.U.ft Deg C umhos /cm mg/L mV mV NTUs mg/L ug/L ug/L ug/L ug/L mg/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L mg/L ug/L mg/L ug/L mg/L ug/L 6.5-8.5 NE NE NE NE NE NE NE NE 1*10 700 2 250 0.07^0.07^10 1*1000 300 15 50 20 NE NE 250 0.2*500 0.3* 4.9-7.4 NE NE NE NE NE NE NE NE 0.14 7.416 60.74 NE 182.3 0.279 0.279+4.185 7.53 27.6 6583 0.24 1114 2.497 41.62 167 18.07 NE 338.8 1.705 Sample ID Sample Collection Date Reporting Units Analytical Parameter Field Parameters Analytical Results Provisional Background 15A NCAC 02L Standard MW-2C 03/07/1994 6.3 11.86 NM NM NM NM NM NM NM NA <1 NA NA 48.1 NA NA NA NA NA 930 NA NA 2 NA NA NA NA 316 NA MW-2C 07/11/1994 6.3 10.23 NM NM NM NM NM NM NM NA <1 NA NA 53.1 NA NA NA NA NA 770 NA NA <1 NA NA NA NA 440 NA MW-2C 11/02/1994 6.2 10.86 NM NM NM NM NM NM NM NA <1 NA NA 50 NA NA NA NA NA 730 NA NA 5 NA NA NA NA 337 NA MW-2C 03/08/1995 6.5 14.00 NM NM NM NM NM NM NM NA <1 NA NA 47 NA NA NA NA NA 1200 NA NA 3 NA NA NA NA 340 NA MW-2C 03/06/1996 6.5 13.96 NM NM NM NM NM NM NM NA <1 NA NA 53 NA NA NA NA NA 430 NA NA <1 NA NA NA NA 438 NA MW-2C 03/17/1997 6.4 12.75 NM NM NM NM NM NM NM NA 5.5 NA NA 51 NA NA NA NA NA 1500 NA NA 3 NA NA NA NA 412 NA MW-2C 03/16/1998 6.4 12.40 NM NM NM NM NM NM NM NA 55 NA NA 35.3 NA NA NA NA NA 3360 NA NA <5 NA NA NA NA 399 NA MW-2C 03/17/1999 6.9 13.93 NM NM NM NM NM NM NM NA 66 NA NA 38.5 NA NA NA NA NA 3970 NA NA 35 NA NA NA NA 355 NA MW-2C 03/06/2000 6.5 13.14 NM NM NM NM NM NM NM NA 35 NA NA 16.7 NA NA NA NA NA 1870 NA NA <5 NA NA NA NA 178 NA MW-2C 03/16/2001 6.7 14.80 NM NM NM NM NM NM NM NA <5 NA NA 37.2 NA NA NA NA NA 2810 NA NA <5 NA NA NA NA 392 NA MW-2C 03/06/2002 6.9 14.66 NM NM NM NM NM NM NM NA 104 NA NA 33.5 NA NA NA NA NA 3230 NA NA <5 NA NA NA NA 397 NA MW-2C 03/18/2003 6.5 14.42 NM NM NM NM NM NM NM NA 102 NA NA 51 NA NA NA NA NA 5310 NA NA <5 NA NA NA NA 427 NA MW-2C 03/09/2004 6.4 12.35 NM NM NM NM NM NM NM NA 47 NA NA 106 NA NA NA NA NA 3330 NA NA <5 NA NA NA NA 511 NA MW-2C 03/07/2005 6.4 14.45 NM NM NM NM NM NM NM NA 104 NA NA 55.6 NA NA NA NA NA 4600 NA NA <5 NA NA NA NA 443 NA MW-2C 03/02/2006 6.7 11.87 NM NM NM NM NM NM NM NA 126 NA NA 58.4 NA NA NA NA NA 3220 NA NA <5 NA NA NA NA 439 NA MW-2C 12/12/2006 6.8 12.18 20 481 NM NM NM NM NM 0.75 280 2100 0.068 23.1 NA NA 0.18 NA 3.8 4750 0.33 159 0.58 NA NA 146 0.71 320 NA MW-2C 03/06/2007 6.7 13.66 20 NM NM NM NM NM NM <3 290 2690 <1 26.6 NA NA <5 NA 6 3420 <3 146 <5 NA NA 178 <1 325 NA MW-2C 11/07/2007 6.4 15.34 NM 567 NM NM NM NM NM <2.5 239 2160 <1 31 NA NA <5 NA <5 3460 <5 255 <5 NA NA 184 <1 328 NA MW-2C 03/11/2008 6.3 15.12 20 582 NM NM NM NM NM <2.5 134 2200 23 32 NA NA <5 NA <5 3060 <5 154 <5 NA NA 132 <1 357 NA MW-2C 11/06/2008 6.8 15.25 20 603 NM NM NM NM NM <2 186 2160 <1 29 NA NA <5 NA <5 3320 <5 65 <5 NA NA 141 <1 359 NA MW-2C 03/10/2009 6.8 14.71 20 591 NM NM NM NM NM <40 193 1600 <10 34 NA NA 11 NA <10 2880 <10 90 <20 NA NA 148 <10 348 NA MW-2C 10/06/2009 6.8 13.44 20 592 NM NM NM NM NM <5 114 1670 <5 36 NA NA <5 NA <5 3910 <5 153 <5 NA NA 140 <5 359 NA MW-2C 03/10/2010 6.8 13.21 19 618 NM NM NM NM NM <1 148 1910 <1 37 NA NA 3 NA 1 2550 <1 141 4 NA NA 162 <1 413 NA MW-2C 11/11/2010 6.8 12.33 20 631 NM NM NM NM NM <0.5 196 2150 <0.08 30.7 NA NA <5 NA <5 3750 <5 120 <10 NA NA 142 0.58 376 NA MW-2C 03/02/2011 6.7 13.94 19 573 NM NM NM 9.9 NM <0.5 267 1990 <0.08 31.1 b NA NA <5 NA <5 5740 <5 203 <10 NA NA 148 0.56 390 b NA MW-2C 10/04/2011 6.4 13.69 21 607 NM NM NM 5.73 NM <0.5 85.6 2270 <0.08 33.3 NA NA <5 NA <5 3140 <5 259 <10 NA NA 144 0.57 352 NA MW-2C 03/06/2012 6.5 15.48 19 679 NM NM NM 7.89 NM <0.5 232 2790 <0.08 36.3 NA NA <5 NA <5 7170 <5 350 <10 NA NA 142 0.6 457 NA MW-2C 06/05/2012 6.6 15.09 21 855 NM NM NM 6.97 NM <0.5 260 2640 <0.08 55.4 NA NA <5 NA <5 8050 <5 265 <10 NA NA 143 0.11 526 NA MW-2C 05/23/2014 6.7 NM 22 807 0.5 4 NM 28.7 NM <5.3 278 3020 <0.76 42.1 NA NA <1.6 NA <2.7 9510 <4.7 375 <8.4 0.0366 3100 130 <5.4 542 <2 MW-6C 03/01/1990 4.7 10.13 NM NM NM NM NM NM NM NA <1 NA NA 115 NA NA NA NA NA 7140 NA NA <1 NA NA NA NA 228 NA MW-6C 07/01/1990 4.7 10.09 NM NM NM NM NM NM NM NA <1 NA NA 103.6 NA NA NA NA NA 610 NA NA <1 NA NA NA NA 228 NA MW-6C 03/08/1995 4.8 5.72 NM NM NM NM NM NM NM NA <1 NA NA 79 NA NA NA NA NA 1500 NA NA <1 NA NA NA NA 202 NA MW-6C 03/06/1996 4.9 5.12 NM NM NM NM NM NM NM NA <1 NA NA 83 NA NA NA NA NA 2500 NA NA <1 NA NA NA NA 260 NA MW-6C 03/17/1997 5.5 3.72 NM NM NM NM NM NM NM NA <1 NA NA 47 NA NA NA NA NA 1200 NA NA <1 NA NA NA NA 311 NA MW-6C 03/17/1999 4.6 4.66 NM NM NM NM NM NM NM NA <5 NA NA 43.2 NA NA NA NA NA 193 NA NA 25 NA NA NA NA 270 NA MW-6C 03/18/2003 4.8 4.84 NM NM NM NM NM NM NM NA <5 NA NA 74.7 NA NA NA NA NA 489 NA NA <5 NA NA NA NA 323 NA MW-6C 03/09/2004 4.7 1.11 NM NM NM NM NM NM NM NA <5 NA NA 42.3 NA NA NA NA NA 1340 NA NA <5 NA NA NA NA 220 NA MW-6C 12/12/2006 7.1 2.51 20 534 NM NM NM NM NM 3 0.22 739 <1 83 NA NA 0.18 NA 2000 157 0.54 930 1.2 NA NA 142 0.1 311 NA MW-6C 03/06/2007 4.9 3.68 20 NM NM NM NM NM NM <3 <1 770 <1 72.2 NA NA <5 NA <5000 331 <3 711 <5 NA NA 177 <1 340 NA MW-6C 11/07/2007 4.6 6.28 NM 591 NM NM NM NM NM <2.5 <1 1140 <1 78 NA NA <5 NA <5000 1040 6 1090 <5 NA NA 190 <1 330 NA MW-6C 03/11/2008 4.3 6.10 20 591 NM NM NM NM NM <2.5 <2 925 <1 86 NA NA 7 NA <5000 275 <5 889 <5 NA NA 136 <1 345 NA MW-6C 11/06/2008 4.7 5.62 20 651 NM NM NM NM NM <2 <2 940 <10 95 NA NA <5 NA <5000 236 <5 644 <5 NA NA 142 <1 381 NA MW-6C 03/10/2009 4.6 5.13 19 561 NM NM NM NM NM <40 <2 896 <5 72 NA NA <10 NA <10000 138 <10 929 <20 NA NA 130 <10 332 NA MW-6C 10/06/2009 4.7 3.39 20 659 NM NM NM NM NM <5 <5 1510 <1 102 NA NA <5 NA <5000 153 <5 1260 <5 NA NA 139 <5 382 NA MW-6C 03/10/2010 4.7 3.48 19 682 NM NM NM NM NM <1 <1 1490 0.26 113 NA NA 3 NA 2000 424 <1 1130 5 NA NA 141 <1 429 NA MW-6C 11/11/2010 4.7 2.30 20 640 NM NM NM NM NM <0.5 <5 1350 0.17 105 NA NA <5 NA <5 219 <5 1060 <10 NA NA 132 <0.1 360 NA MW-6C 03/02/2011 5.0 3.91 18 492 NM NM NM 4.76 NM <0.5 <5 943 0.3 6.5 b NA NA <5 NA <5 636 <5 301 <10 NA NA 103 <0.1 304 b NA MW-6C 10/04/2011 4.6 3.91 22 798 NM NM NM 2.79 NM <0.5 <5 1690 0.23 153 NA NA <5 NA <5 780 <5 1180 <10 NA NA 130 <0.1 456 NA MW-6C 03/06/2012 4.9 5.82 17 703 NM NM NM 2.05 NM <0.5 <5 1680 0.2 163 NA NA <5 NA <5 407 <5 1280 <10 NA NA 121 <0.1 798 NA MW-6C 06/05/2012 4.6 5.49 21 799 NM NM NM 5.71 NM <0.5 <5 1320 NA 146 NA NA <5 NA <5 591 <5 1150 <10 NA NA 135 0.1 437 NA TABLE 4-8 LOWER SURFICIAL GROUNDWATER EXCEEDANCES INCORPORATING PROVISIONAL BACKGROUND L.V. SUTTON ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, WILMINGTON, NC P:\Duke Energy Progress.1026\108. Sutton Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 4-8 Lower Surficial GW Exceedances Inc Provisional BG.xlsx Page 5 of 11 pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Boron Cadmium Chloride Chromium (VI) Chromium (VI) Speciation Chromium Cobalt Copper Iron Lead Manganese Selenium Sodium Strontium Sulfate Thallium Total Dissolved Solids Vanadium S.U.ft Deg C umhos /cm mg/L mV mV NTUs mg/L ug/L ug/L ug/L ug/L mg/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L mg/L ug/L mg/L ug/L mg/L ug/L 6.5-8.5 NE NE NE NE NE NE NE NE 1*10 700 2 250 0.07^0.07^10 1*1000 300 15 50 20 NE NE 250 0.2*500 0.3* 4.9-7.4 NE NE NE NE NE NE NE NE 0.14 7.416 60.74 NE 182.3 0.279 0.279+4.185 7.53 27.6 6583 0.24 1114 2.497 41.62 167 18.07 NE 338.8 1.705 Sample ID Sample Collection Date Reporting Units Analytical Parameter Field Parameters Analytical Results Provisional Background 15A NCAC 02L Standard MW-6C 05/21/2014 4.8 NM 22 577 0.6 100 NM 4.92 NM <5.3 <6.8 1270 <0.76 85.10001 NA NA <1.6 NA <2.7 514 <4.7 857 <8.4 0.0672 431 112 <5.4 338 <2 MW-7C 03/01/1990 NM NM NM NM NM NM NM NM NM NA <1 NA NA 210 NA NA NA NA NA 3400 NA NA <1 NA NA NA NA 468 NA MW-7C 07/01/1990 NM NM NM NM NM NM NM NM NM NA <1 NA NA 175 NA NA NA NA NA 1600 NA NA <1 NA NA NA NA 384 NA MW-7C 03/08/1995 NM NM NM NM NM NM NM NM NM NA 1.4 NA NA 30 NA NA NA NA NA 2800 NA NA 2 NA NA NA NA 106 NA MW-7C 03/06/1996 NM NM NM NM NM NM NM NM NM NA 2.5 NA NA 85 NA NA NA NA NA 4900 NA NA <1 NA NA NA NA 299 NA MW-7C 03/17/1997 NM NM NM NM NM NM NM NM NM NA 2 NA NA 61 NA NA NA NA NA 5200 NA NA <1 NA NA NA NA 186 NA MW-7C 03/17/1999 NM NM NM NM NM NM NM NM NM NA <5 NA NA 87.4 NA NA NA NA NA 696 NA NA 27 NA NA NA NA 283 NA MW-7C 03/06/2000 NM NM NM NM NM NM NM NM NM NA <5 NA NA 39.5 NA NA NA NA NA 464 NA NA <5 NA NA NA NA 136 NA MW-7C 03/16/2001 NM NM NM NM NM NM NM NM NM NA <5 NA NA 61.4 NA NA NA NA NA 914 NA NA <5 NA NA NA NA 191 NA MW-7C 03/06/2002 NM NM NM NM NM NM NM NM NM NA <5 NA NA 48.2 NA NA NA NA NA 1330 NA NA <5 NA NA NA NA 527 NA MW-7C 03/18/2003 NM NM NM NM NM NM NM NM NM NA <5 NA NA 45.8 NA NA NA NA NA 861 NA NA <5 NA NA NA NA 191 NA MW-7C 03/09/2004 NM NM NM NM NM NM NM NM NM NA <5 NA NA 20.4 NA NA NA NA NA 502 NA NA <5 NA NA NA NA 104 NA MW-7C 03/10/2009 4.8 7.78 NM NM NM NM NM NM NM NA <2 NA NA 446 NA NA NA NA NA <100 NA NA <20 NA NA NA NA 897 NA MW-7C 03/06/2012 5.1 10.56 19 391 0.75 -88 117 3.97 NM <0.5 <5 709 0.083 49.2 NA NA <5 NA <5 561 <5 320 <10 NA NA 92 <0.1 228 NA MW-7C 06/05/2012 4.9 9.11 20 518 2.31 -51 154 8.06 NM <0.5 <5 767 0.1 78.6 NA NA <5 NA <5 707 <5 458 <10 NA NA 94.5 <0.1 298 NA MW-7C 10/02/2012 4.9 9.69 22 457 1.53 195 400 6.81 NM <0.5 <5 157 <0.08 77.7 NA NA <5 NA <5 273 <5 60 <10 NA NA 85.8 <0.1 225 NA MW-7C 03/12/2013 5.0 8.20 19 409 0.27 239 444 4.05 NM <1 <1 164 <1 68 NA NA <5 NA <5 222 <1 108 <1 NA NA 68 <0.2 230 NA MW-7C DUP 03/12/2013 5.0 8.20 19 409 0.27 239 444 4.05 NM <1 <1 164 <1 71 NA NA <5 NA <5 198 <1 105 <1 NA NA 64 <0.2 230 NA MW-7C 06/12/2013 5.0 7.72 22 422 0.58 244 449 4.33 NM <1 <1 185 3.34 14 NA NA <5 NA <5 282 <1 148 <1 NA NA 9.1 <0.2 230 NA MW-7C 10/03/2013 5.3 7.51 26 455 0.34 272 477 5.29 NM <1 <1 312 <1 71 NA NA <5 NA <5 266 <1 101 <1 NA NA 75 <0.2 250 NA MW-7C 03/04/2014 5.6 8.24 17 387 0.29 148 353 1.68 NM <1 <1 330 <1 83 NA NA <5 NA <5 128 <1 142 <1 NA NA 73 <0.2 250 NA MW-7C 06/02/2014 5.5 7.71 22 420 NM 214 419 4.3 NM <1 <1 391 <1 71 NA NA <5 NA <5 316 <1 131 <1 NA NA 67 <0.2 240 NA MW-7C 10/02/2014 5.2 6.46 23 193 3.44 232 437 3.79 NM <1 <1 386 <1 27 NA NA <5 NA <5 381 <1 136 <1 NA NA 48 <0.2 130 NA MW-7C 03/10/2015 5.3 6.68 19 248 1.46 232 437 2.13 NM <1 <1 490 <1 30 NA NA <5 NA <5 50 <1 202 <1 NA NA 67 <0.2 140 NA MW-7C 06/02/2015 5.0 7.00 21 299 1.23 256 461 1.86 0 <1 <1 546 <1 38 NA NA <1 <1 <1 73 <1 333 <1 29.7 242 83 <0.2 200 0.573 MW-7C 10/13/2015 5.5 4.36 22 158 3.3 214 419 0.32 NM <1 <1 411 <1 12 NA NA <5 <1 <5 21 <1 56 <1 11.2 164 53 0.216 78 <0.3 MW-7C 03/09/2016 5.2 6.18 19 145 3.54 287 492 1 0 <1 <1 304 <1 12 NA NA <5 1.51 <5 144 <1 173 <1 11.4 109 42 <0.2 79 0.642 MW-7C 06/14/2016 5.3 7.33 22 138 3.21 218 423 1.09 NM <1 <1 279 <1 12 NA NA <5 <1 <5 86 <1 85 <1 10.1 124 37 <0.2 58 0.611 MW-8 03/01/1990 6.1 8.06 NM NM NM NM NM NM NM NA <1 NA NA 260 NA NA NA NA NA 4800 NA NA <1 NA NA NA NA 444 NA MW-8 07/01/1990 6.1 8.37 NM NM NM NM NM NM NM NA <1 NA NA 255 NA NA NA NA NA 3200 NA NA <1 NA NA NA NA 488 NA MW-8 07/22/1991 5.4 7.32 NM NM NM NM NM NM NM NA <1 NA NA 164.7 NA NA NA NA NA 320 NA NA <1 NA NA NA NA 304 NA MW-8 07/15/1992 5.6 8.70 NM NM NM NM NM NM NM NA <1 NA NA 130 NA NA NA NA NA 380 NA NA <1 NA NA NA NA 276 NA MW-8 03/22/1993 5.6 10.82 NM NM NM NM NM NM NM NA <1 NA NA 117.6 NA NA NA NA NA 620 NA NA <1 NA NA NA NA 260 NA MW-8 07/19/1993 5.7 9.41 NM NM NM NM NM NM NM NA <1 NA NA 119.1 NA NA NA NA NA 500 NA NA <1 NA NA NA NA 312 NA MW-8 11/04/1993 5.7 9.91 NM NM NM NM NM NM NM NA <1 NA NA 127.6 NA NA NA NA NA 360 NA NA <1 NA NA NA NA 184 NA MW-8 11/02/1994 5.7 10.21 NM NM NM NM NM NM NM NA <1 NA NA 130 NA NA NA NA NA 510 NA NA <1 NA NA NA NA 290 NA MW-8 03/08/1995 5.9 7.35 NM NM NM NM NM NM NM NA 2.4 NA NA 120 NA NA NA NA NA 13000 NA NA <1 NA NA NA NA 280 NA MW-8 03/09/2004 5.6 6.42 NM NM NM NM NM NM NM NA <5 NA NA 24.7 NA NA NA NA NA 671 NA NA <5 NA NA NA NA 85 NA MW-8 03/07/2005 5.7 7.70 NM NM NM NM NM NM NM NA <5 NA NA 32.3 NA NA NA NA NA 450 NA NA <5 NA NA NA NA 116 NA MW-8 03/07/2012 5.7 7.72 19 299 NM NM NM 0.52 NM <0.5 <5 <50 <0.08 23.6 NA NA <5 NA <5 63.6 <5 376 <10 NA NA 19.2 <0.1 102 NA MW-8 06/06/2012 5.6 7.79 19 170 NM NM NM 0.65 NM <0.5 <5 <50 <0.08 28.3 NA NA <5 NA <5 <50 <5 344 <10 NA NA 21.5 <0.1 101 NA MW-8 03/05/2014 5.5 7.93 15 82 0.9 272 477 0.9 NM <1 <1 <50 <1 NA NA NA <5 NA <5 <10 <1 270 <1 NA NA NA <0.2 52 NA MW-9 03/01/1990 5.5 6.91 NM NM NM NM NM NM NM NA <1 NA NA 11.5 NA NA NA NA NA 360 NA NA <1 NA NA NA NA 20 NA MW-9 07/01/1990 6.7 7.01 NM NM NM NM NM NM NM NA <1 NA NA 9 NA NA NA NA NA 320 NA NA <1 NA NA NA NA 0 NA MW-9 03/08/1995 5.5 17.97 NM NM NM NM NM NM NM NA <1 NA NA 32 NA NA NA NA NA 1400 NA NA <1 NA NA NA NA 78 NA MW-9 03/06/1996 5.6 19.44 NM NM NM NM NM NM NM NA 3 NA NA 28 NA NA NA NA NA 4300 NA NA <1 NA NA NA NA 185 NA MW-9 03/17/1997 5.4 17.73 NM NM NM NM NM NM NM NA <1 NA NA 34 NA NA NA NA NA 600 NA NA <1 NA NA NA NA 60 NA MW-9 03/17/1999 5.3 17.64 NM NM NM NM NM NM NM NA <5 NA NA 22.3 NA NA NA NA NA 489 NA NA 10 NA NA NA NA 50 NA MW-9 03/16/2001 5.3 18.60 NM NM NM NM NM NM NM NA <5 NA NA 23.1 NA NA NA NA NA 586 NA NA <5 NA NA NA NA 69 NA MW-9 03/06/2002 5.8 19.35 NM NM NM NM NM NM NM NA <5 NA NA 8.99 NA NA NA NA NA 316 NA NA <5 NA NA NA NA 35 NA TABLE 4-8 LOWER SURFICIAL GROUNDWATER EXCEEDANCES INCORPORATING PROVISIONAL BACKGROUND L.V. SUTTON ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, WILMINGTON, NC P:\Duke Energy Progress.1026\108. Sutton Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 4-8 Lower Surficial GW Exceedances Inc Provisional BG.xlsx Page 6 of 11 pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Boron Cadmium Chloride Chromium (VI) Chromium (VI) Speciation Chromium Cobalt Copper Iron Lead Manganese Selenium Sodium Strontium Sulfate Thallium Total Dissolved Solids Vanadium S.U.ft Deg C umhos /cm mg/L mV mV NTUs mg/L ug/L ug/L ug/L ug/L mg/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L mg/L ug/L mg/L ug/L mg/L ug/L 6.5-8.5 NE NE NE NE NE NE NE NE 1*10 700 2 250 0.07^0.07^10 1*1000 300 15 50 20 NE NE 250 0.2*500 0.3* 4.9-7.4 NE NE NE NE NE NE NE NE 0.14 7.416 60.74 NE 182.3 0.279 0.279+4.185 7.53 27.6 6583 0.24 1114 2.497 41.62 167 18.07 NE 338.8 1.705 Sample ID Sample Collection Date Reporting Units Analytical Parameter Field Parameters Analytical Results Provisional Background 15A NCAC 02L Standard MW-9 03/18/2003 5.6 18.26 NM NM NM NM NM NM NM NA <5 NA NA 22.7 NA NA NA NA NA 471 NA NA <5 NA NA NA NA 73 NA MW-9 03/09/2004 5.1 15.64 NM NM NM NM NM NM NM NA <5 NA NA 5.7 NA NA NA NA NA 398 NA NA <5 NA NA NA NA 35 NA MW-10 03/01/1990 6.2 8.65 NM NM NM NM NM NM NM NA 2 NA NA 8.51 NA NA NA NA NA 3800 NA NA <1 NA NA NA NA 156 NA MW-10 07/01/1990 5.3 8.77 NM NM NM NM NM NM NM NA <1 NA NA 7.01 NA NA NA NA NA 770 NA NA <1 NA NA NA NA 0 NA MW-10 07/19/1993 4.8 9.70 NM NM NM NM NM NM NM NA <1 NA NA 47.6 NA NA NA NA NA 490 NA NA <1 NA NA NA NA 124 NA MW-10 03/08/1995 5.4 16.18 NM NM NM NM NM NM NM NA <1 NA NA 5.4 NA NA NA NA NA 1300 NA NA <1 NA NA NA NA 34 NA MW-10 03/17/1999 4.7 16.11 NM NM NM NM NM NM NM NA <5 NA NA 34.7 NA NA NA NA NA 556 NA NA 11 NA NA NA NA 130 NA MW-10 03/09/2004 4.8 14.16 NM NM NM NM NM NM NM NA <5 NA NA 13.3 NA NA NA NA NA 485 NA NA <5 NA NA NA NA 68 NA MW-10 03/07/2012 5.0 16.80 20 177 NM NM NM 0.53 NM <0.5 <5 53.3 <0.08 12.2 NA NA <5 NA <5 105 <5 86.7 <10 NA NA 16.2 <0.1 72 NA MW-10 06/05/2012 5.2 16.98 20 103 NM NM NM 1.19 NM <0.5 <5 73 <0.08 11.6 NA NA <5 NA <5 156 <5 84 <10 NA NA 19.3 <0.1 53 NA MW-11 03/01/1990 5.2 8.51 NM NM NM NM NM NM NM NA <1 NA NA 170 NA NA NA NA NA 4900 NA NA <1 NA NA NA NA 400 NA MW-11 07/01/1990 5.2 8.33 NM NM NM NM NM NM NM NA <1 NA NA 150 NA NA NA NA NA 3400 NA NA <1 NA NA NA NA 408 NA MW-11 11/13/1990 4.9 8.13 NM NM NM NM NM NM NM NA <1 NA NA 110 NA NA NA NA NA 4800 NA NA <1 NA NA NA NA 424 NA MW-11 03/06/1991 5.0 9.02 NM NM NM NM NM NM NM NA <1 NA NA 99 NA NA NA NA NA 1800 NA NA <1 NA NA NA NA 344 NA MW-11 07/22/1991 4.7 8.00 NM NM NM NM NM NM NM NA <1 NA NA 94.6 NA NA NA NA NA 1400 NA NA <1 NA NA NA NA 320 NA MW-11 11/06/1991 4.8 9.26 NM NM NM NM NM NM NM NA <1 NA NA 85.1 NA NA NA NA NA 890 NA NA <1 NA NA NA NA 300 NA MW-11 03/25/1992 5.1 8.82 NM NM NM NM NM NM NM NA <1 NA NA 70.1 NA NA NA NA NA 1000 NA NA <1 NA NA NA NA 308 NA MW-11 07/15/1992 4.7 8.13 NM NM NM NM NM NM NM NA <1 NA NA 45.6 NA NA NA NA NA 640 NA NA <1 NA NA NA NA 220 NA MW-11 07/19/1993 4.6 8.84 NM NM NM NM NM NM NM NA <1 NA NA 79.6 NA NA NA NA NA 490 NA NA <1 NA NA NA NA 348 NA MW-11 11/04/1993 4.6 9.09 NM NM NM NM NM NM NM NA <1 NA NA 79.6 NA NA NA NA NA 440 NA NA <1 NA NA NA NA 168 NA MW-11 03/17/1999 4.9 14.02 NM NM NM NM NM NM NM NA <5 NA NA 11.4 NA NA NA NA NA 379 NA NA 11 NA NA NA NA 51.5 NA MW-11 03/18/2003 5.0 15.41 NM NM NM NM NM NM NM NA <5 NA NA 13.3 NA NA NA NA NA 1010 NA NA <5 NA NA NA NA 33 NA MW-11 03/11/2008 4.3 16.00 NM NM NM NM NM NM NM NA <2 NA NA 8 NA NA NA NA NA 330 NA NA <5 NA NA NA NA 29 NA MW-11 03/02/2011 4.5 13.11 18 49 5.16 226 431 3.36 NM NA <5 NA NA <5 NA NA NA NA NA 420 NA NA <10 NA NA NA NA <50 NA MW-11 03/07/2012 5.0 15.41 18 126 2.87 -63 142 3.13 NM <0.5 <5 <50 <0.08 7.3 NA NA <5 NA <5 174 <5 91.4 <10 NA NA 8.8 <0.1 48 NA MW-11 06/06/2012 4.6 15.46 19 65 2.27 -56 149 2.97 NM <0.5 <5 <50 0.081 7.1 NA NA <5 NA <5 245 <5 88.3 <10 NA NA 10.6 <0.1 39 NA MW-11 10/02/2012 4.5 14.26 22 70 1.86 297 502 3.5 NM <0.5 <5 <50 0.11 8 NA NA <5 NA <5 181 <5 99.6 <10 NA NA 10.7 <0.1 <25 NA MW-11 03/13/2013 4.6 14.69 17 71 1.38 323 528 2.33 NM <1 <1 <50 <1 9 NA NA <5 NA <5 142 <1 90 <1 NA NA 13 <0.2 37 NA MW-11 06/13/2013 4.0 14.81 22 82 1.79 281 486 2.61 NM <1 <1 <50 <1 10 NA NA <5 NA <5 219 <1 115 <1 NA NA 13 <0.2 46 NA MW-11 10/03/2013 4.5 13.04 22 86 1.5 372 577 2.15 NM <1 <1 <50 <1 11 NA NA <5 NA <5 130 <1 117 <1 NA NA 14 <0.2 58 NA MW-11 03/05/2014 4.7 15.04 14 76 2.36 323 528 5.04 NM <1 <1 <50 <1 9.4 NA NA <5 NA <5 295 <1 86 <1 NA NA 12 <0.2 42 NA MW-11 06/03/2014 4.7 14.19 23 63 NM 335 540 2 NM <1 <1 <50 <1 6.8 NA NA <5 NA <5 140 <1 60 <1 NA NA 10 <0.2 41 NA MW-11 06/01/2015 4.5 13.51 21 48 4.48 323 528 3.69 NM <1 <1 <50 <1 4 NA NA <5 <1 <5 48 <1 30 <1 1.89 NA 12 <0.2 <25 NA MW-11 10/13/2015 4.7 9.85 25 80 5.3 265 470 0.69 NM <1 <1 <50 <1 7.4 NA NA <5 <1 <5 28 <1 22 <1 4.7 15 21 <0.2 50 <0.3 MW-11 DUP 10/13/2015 4.7 9.85 25 80 5.3 265 470 0.69 NM <1 <1 <50 <1 7.4 NA NA <5 <1 <5 31 <1 22 <1 4.76 15 25 <0.2 50 <0.3 MW-11 03/09/2016 4.8 10.84 23 80 6.96 200 405 0.8 0 <1 <1 <50 <1 7.6 NA NA <5 <1 <5 29 <1 52 <1 4.72 24 18 <0.2 38 0.31 MW-11 06/15/2016 4.8 18.46 26 72 3.47 318 523 9.41 NM <1 <1 <50 <1 6.7 NA NA <5 <1 <5 487 2.17 23 <1 4.11 16 20 <0.2 <25 1.11 MW-12 03/01/1990 5.8 9.76 NM NM NM NM NM NM NM NA <1 NA NA 185 NA NA NA NA NA 8000 NA NA <1 NA NA NA NA 428 NA MW-12 07/01/1990 5.6 9.55 NM NM NM NM NM NM NM NA 4 NA NA 170 NA NA NA NA NA 4000 NA NA <1 NA NA NA NA 436 NA MW-12 11/13/1990 5.1 9.55 NM NM NM NM NM NM NM NA 1 NA NA 160 NA NA NA NA NA 1400 NA NA 1 NA NA NA NA 524 NA MW-12 03/06/1991 5.0 10.32 NM NM NM NM NM NM NM NA <1 NA NA 161 NA NA NA NA NA 370 NA NA 1 NA NA NA NA 476 NA MW-12 07/22/1991 5.0 9.11 NM NM NM NM NM NM NM NA <1 NA NA 164.2 NA NA NA NA NA 440 NA NA <1 NA NA NA NA 448 NA MW-12 07/15/1992 4.8 9.47 NM NM NM NM NM NM NM NA <1 NA NA 150 NA NA NA NA NA 380 NA NA <1 NA NA NA NA 488 NA MW-12 03/22/1993 4.9 11.30 NM NM NM NM NM NM NM NA <1 NA NA 95.1 NA NA NA NA NA 440 NA NA 1 NA NA NA NA 432 NA MW-12 07/19/1993 4.9 9.37 NM NM NM NM NM NM NM NA <1 NA NA 83.1 NA NA NA NA NA 420 NA NA <1 NA NA NA NA 448 NA MW-12 11/04/1993 4.9 10.07 NM NM NM NM NM NM NM NA <1 NA NA 84.6 NA NA NA NA NA 410 NA NA <1 NA NA NA NA 248 NA MW-12 03/07/1994 4.9 11.85 NM NM NM NM NM NM NM NA <1 NA NA 90 NA NA NA NA NA 340 NA NA 1 NA NA NA NA 408 NA MW-12 07/11/1994 4.9 9.42 NM NM NM NM NM NM NM NA 1 NA NA 82.1 NA NA NA NA NA 310 NA NA <1 NA NA NA NA 384 NA MW-12 11/02/1994 4.9 10.61 NM NM NM NM NM NM NM NA <1 NA NA 88 NA NA NA NA NA 370 NA NA <1 NA NA NA NA 361 NA MW-12 03/08/1995 4.9 10.76 NM NM NM NM NM NM NM NA <1 NA NA 82 NA NA NA NA NA 1300 NA NA <1 NA NA NA NA 367 NA TABLE 4-8 LOWER SURFICIAL GROUNDWATER EXCEEDANCES INCORPORATING PROVISIONAL BACKGROUND L.V. SUTTON ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, WILMINGTON, NC P:\Duke Energy Progress.1026\108. Sutton Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 4-8 Lower Surficial GW Exceedances Inc Provisional BG.xlsx Page 7 of 11 pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Boron Cadmium Chloride Chromium (VI) Chromium (VI) Speciation Chromium Cobalt Copper Iron Lead Manganese Selenium Sodium Strontium Sulfate Thallium Total Dissolved Solids Vanadium S.U.ft Deg C umhos /cm mg/L mV mV NTUs mg/L ug/L ug/L ug/L ug/L mg/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L mg/L ug/L mg/L ug/L mg/L ug/L 6.5-8.5 NE NE NE NE NE NE NE NE 1*10 700 2 250 0.07^0.07^10 1*1000 300 15 50 20 NE NE 250 0.2*500 0.3* 4.9-7.4 NE NE NE NE NE NE NE NE 0.14 7.416 60.74 NE 182.3 0.279 0.279+4.185 7.53 27.6 6583 0.24 1114 2.497 41.62 167 18.07 NE 338.8 1.705 Sample ID Sample Collection Date Reporting Units Analytical Parameter Field Parameters Analytical Results Provisional Background 15A NCAC 02L Standard MW-12 03/06/1996 5.0 10.50 NM NM NM NM NM NM NM NA 2.6 NA NA 82 NA NA NA NA NA 3900 NA NA <1 NA NA NA NA 369 NA MW-12 03/17/1997 5.1 8.74 NM NM NM NM NM NM NM NA <1 NA NA 69 NA NA NA NA NA 1000 NA NA <1 NA NA NA NA 341 NA MW-12 03/16/1998 5.1 7.36 NM NM NM NM NM NM NM NA <5 NA NA 56.2 NA NA NA NA NA 896 NA NA <5 NA NA NA NA 366 NA MW-12 03/17/1999 4.9 10.16 NM NM NM NM NM NM NM NA <5 NA NA 57.5 NA NA NA NA NA 988 NA NA 34 NA NA NA NA 364 NA MW-12 03/06/2000 5.0 8.64 NM NM NM NM NM NM NM NA <5 NA NA 48.2 NA NA NA NA NA 1020 NA NA <5 NA NA NA NA 326 NA MW-12 03/16/2001 5.2 10.79 NM NM NM NM NM NM NM NA <5 NA NA 58.6 NA NA NA NA NA 552 NA NA <5 NA NA NA NA 337 NA MW-12 03/06/2002 5.1 11.56 NM NM NM NM NM NM NM NA <5 NA NA 46.5 NA NA NA NA NA 1570 NA NA <5 NA NA NA NA 313 NA MW-12 03/18/2003 4.9 10.87 NM NM NM NM NM NM NM NA <5 NA NA 52.1 NA NA NA NA NA 1480 NA NA <5 NA NA NA NA 335 NA MW-12 03/09/2004 5.1 7.88 NM NM NM NM NM NM NM NA <5 NA NA 14.7 NA NA NA NA NA 649 NA NA <5 NA NA NA NA 177 NA MW-12 03/07/2005 5.1 10.31 NM NM NM NM NM NM NM NA <5 NA NA 36.6 NA NA NA NA NA 581 NA NA <5 NA NA NA NA 304 NA MW-12 03/02/2006 4.7 7.19 NM NM NM NM NM NM NM NA <5 NA NA 46.6 NA NA NA NA NA 733 NA NA <5 NA NA NA NA 315 NA MW-12 03/06/2007 5.0 8.22 NM NM NM NM NM NM NM NA 1 NA NA 59.2 NA NA NA NA NA 3560 NA NA <5 NA NA NA NA 302 NA MW-12 03/02/2011 5.4 8.73 16 400 1.07 177 382 1.09 NM NA <5 NA NA 36.6 b NA NA NA NA NA 316 NA NA <10 NA NA NA NA 286 b NA MW-12 03/07/2012 6.3 11.29 15 693 0.86 -74 131 8.96 NM <0.5 <5 1450 0.092 26.9 NA NA <5 NA <5 1490 17.3 281 <10 NA NA 98 <0.1 274 NA MW-12 06/06/2012 6.6 11.10 19 306 4.07 -52 153 2.07 NM <0.5 <5 1260 <0.08 33.7 NA NA <5 NA <5 317 <5 221 <10 NA NA 130 <0.1 312 NA MW-12 10/02/2012 5.6 10.16 23 447 0.72 99 304 8.26 NM <0.5 <5 1290 <0.08 26.2 NA NA <5 NA <5 753 5.3 204 <10 NA NA 159 <0.1 260 NA MW-12 03/13/2013 5.6 10.47 18 415 0.39 221 426 2.79 NM <1 <1 1510 <1 24 NA NA <5 NA <5 255 3.17 280 <1 NA NA 130 <0.2 260 NA MW-12 06/13/2013 5.2 10.50 23 360 0.29 NM NM 3.76 NM <1 <1 1360 <1 18 NA NA <5 NA <5 411 4.82 211 <1 NA NA 110 <0.2 220 NA MW-12 10/03/2013 5.9 8.79 21 428 0.42 214 419 1.35 NM <1 <1 1560 <1 24 NA NA <5 NA <5 110 1.32 236 <1 NA NA 110 <0.2 270 NA MW-12 03/05/2014 6.5 10.79 15 323 3.85 292 497 2.11 NM <1 <1 928 <1 17 NA NA <5 NA <5 97 <1 55 <1 NA NA 78 <0.2 200 NA MW-12 06/03/2014 6.1 10.08 24 276 NM 182 387 1.4 NM <1 <1 1050 <1 16 NA NA <5 NA <5 79 <1 142 <1 NA NA 64 <0.2 170 NA MW-12 10/02/2014 5.7 7.73 21 287 0.27 273 478 0.48 NM <1 <1 1300 <1 39 NA NA <5 NA <5 93 <1 196 <1 NA NA 110 <0.2 230 NA MW-12 03/10/2015 6.7 8.06 20 341 0.44 265 470 2.26 NM <1 <1 1500 <1 110 NA NA <5 NA <5 112 <1 316 <1 NA NA 160 <0.2 430 NA MW-12 06/02/2015 8.5 8.79 22 264 5.52 156 361 4.33 2.5 <1 <1 1450 <1 100 NA 0.013 <1 1.26 <1 5790 <1 683 <1 59.1 1310 130 <0.2 410 <0.3 MW-12 10/12/2015 6.9 3.51 21 389 0.3 -77 128 2.49 NM <1 1.51 341 <1 14 NA NA <5 1.08 <5 3210 <1 396 <1 10.6 911 38 <0.2 260 3.36 MW-12 01/13/2016 6.9 6.32 16 433 0.32 -91 114 0.33 0 <1 <1 1400 <1 86 <0.03 NA <1 1.02 <1 842 <1 706 <1 48.5 1300 130 <0.2 350 0.34 MW-12 03/09/2016 5.7 6.43 19 598 0.3 134 339 2.1 1 <1 <1 1290 <1 70 NA NA <5 1.09 <5 824 1.18 632 <1 41.4 1260 120 <0.2 320 0.835 MW-12 06/16/2016 5.7 8.61 21 532 0.28 63 268 0.74 NM <1 <1 1210 <1 56 NA NA <5 1.08 <5 667 <1 462 <1 34.5 1260 120 <0.2 310 0.457 MW-15D 06/10/2015 6.4 3.02 21 721 0.39 -17 188 1.4 <0.5 <1 <1 560 <1 130 NA NA <1 13.5 <1 85 <1 940 <1 69.8 571 85 <0.2 430 <0.3 MW-16D 06/10/2015 5.4 6.51 21 637 0.1 71 276 4.16 NM <1 <1 680 <1 110 NA <0.006 <1 5.22 <1 1020 <1 311 <1 79.5 215 120 <0.2 350 2.09 MW-16D 12/04/2015 4.7 6.90 21 663 0.2 216 421 6.8 1 <1 <1 445 <1 130 <0.03 NA <1 5.75 <1 1630 <1 232 <1 88.9 157 140 <0.2 370 2.76 MW-16D 01/14/2016 4.8 6.83 22 655 0.72 120 325 9.13 1 <1 <1 444 <1 130 <0.03 NA <1 5.71 <1 1510 <1 234 <1 85.4 146 110 <0.2 360 3.12 MW-18 07/19/1993 NM NM NM NM NM NM NM NM NM NA NA NA NA NA NA NA NA NA NA 500 NA NA NA NA NA NA NA NA NA MW-18 03/02/2006 6.5 9.94 NM NM NM NM NM NM NM NA 39 NA NA 35.2 NA NA NA NA NA 2940 NA NA <5 NA NA NA NA 389 NA MW-18 03/06/2007 6.5 10.58 NM NM NM NM NM NM NM NA 113 NA NA 53 NA NA NA NA NA 2000 NA NA <5 NA NA NA NA 398 NA MW-18 03/11/2008 6.5 11.48 NM NM NM NM NM NM NM NA 67 NA NA 48 NA NA NA NA NA 4140 NA NA <5 NA NA NA NA 358 NA MW-18 03/10/2009 6.6 11.23 NM NM NM NM NM NM NM NA 110 NA NA 73 NA NA NA NA NA 6160 NA NA <20 NA NA NA NA 447 NA MW-18 03/10/2010 6.7 10.08 NM NM NM NM NM NM NM NA 80 NA NA 407 NA NA NA NA NA 6910 NA NA 10 NA NA NA NA 1040 NA MW-18 03/02/2011 6.7 10.83 18 705 NM NM NM 1.06 NM NA 26.9 NA NA 162 NA NA NA NA NA 420 NA NA <10 NA NA NA NA 570 NA MW-18 03/06/2012 6.7 11.89 18 753 NM NM NM 9.69 NM <0.5 169 1550 <0.08 88.6 NA NA <5 NA <5 6510 <5 266 <10 NA NA 81.6 <0.1 505 NA MW-18 06/05/2012 6.7 11.45 20 738 NM NM NM 8.73 NM <0.5 159 1150 <0.08 77.3 NA NA <5 NA <5 4920 <5 215 <10 NA NA 69.4 <0.1 415 NA MW-19 04/11/1993 NM NM NM NM NM NM NM NM NM NA NA NA NA NA NA NA NA NA NA 360 NA NA NA NA NA NA NA NA NA MW-19 12/12/2006 6.3 20.43 20 685 NM NM NM NM NM 0.49 0.63 850 0.19 71.6 NA NA 0.2 NA 4.6 25.1 0.18 356 1 NA NA 126 0.33 334 NA MW-19 03/06/2007 6.2 20.24 20 NM NM NM NM NM NM <3 1 1180 <1 54.6 NA NA <5 NA 6 84 <3 358 <5 NA NA 160 <1 294 NA MW-19 11/07/2007 6.2 21.48 NM 583 NM NM NM NM NM <2.5 <1 1280 <1 46 NA NA <5 NA <5 74 <5 339 <5 NA NA 156 <1 336 NA MW-19 03/11/2008 6.2 21.37 21 566 NM NM NM NM NM <2.5 <2 1620 <1 36 NA NA <5 NA <5 121 <5 354 <5 NA NA 141 <1 360 NA MW-19 11/06/2008 6.5 21.70 21 581 NM NM NM NM NM <2 <2 1760 <1 32 NA NA <5 NA <5 142 <5 182 <5 NA NA 148 <1 314 NA MW-19 03/10/2009 6.4 21.14 21 585 NM NM NM NM NM <40 2 2020 <10 35 NA NA <10 NA <10 200 <10 311 <20 NA NA 161 11 354 NA MW-19 10/06/2009 6.5 19.91 21 582 NM NM NM NM NM <5 <5 1960 <5 36 NA NA <5 NA <5 215 <5 337 <5 NA NA 155 <5 359 NA MW-19 03/10/2010 6.6 19.88 20 542 NM NM NM NM NM <1 <1 1920 <1 33 NA NA 5 NA 1 322 <1 267 3 NA NA 142 <1 361 NA TABLE 4-8 LOWER SURFICIAL GROUNDWATER EXCEEDANCES INCORPORATING PROVISIONAL BACKGROUND L.V. SUTTON ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, WILMINGTON, NC P:\Duke Energy Progress.1026\108. Sutton Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 4-8 Lower Surficial GW Exceedances Inc Provisional BG.xlsx Page 8 of 11 pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Boron Cadmium Chloride Chromium (VI) Chromium (VI) Speciation Chromium Cobalt Copper Iron Lead Manganese Selenium Sodium Strontium Sulfate Thallium Total Dissolved Solids Vanadium S.U.ft Deg C umhos /cm mg/L mV mV NTUs mg/L ug/L ug/L ug/L ug/L mg/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L mg/L ug/L mg/L ug/L mg/L ug/L 6.5-8.5 NE NE NE NE NE NE NE NE 1*10 700 2 250 0.07^0.07^10 1*1000 300 15 50 20 NE NE 250 0.2*500 0.3* 4.9-7.4 NE NE NE NE NE NE NE NE 0.14 7.416 60.74 NE 182.3 0.279 0.279+4.185 7.53 27.6 6583 0.24 1114 2.497 41.62 167 18.07 NE 338.8 1.705 Sample ID Sample Collection Date Reporting Units Analytical Parameter Field Parameters Analytical Results Provisional Background 15A NCAC 02L Standard MW-19 11/11/2010 6.5 19.28 21 504 NM NM NM NM NM <0.5 <5 1830 <0.08 28.8 NA NA <5 NA <5 296 <5 249 <10 NA NA 124 0.31 293 NA MW-19 03/02/2011 6.3 20.54 18 520 0.54 125 330 0.7 NM <0.5 <5 1960 <0.08 39.2 B NA NA <5 NA <5 60.8 <5 347 <10 NA NA 126 0.3 334 b NA MW-19 10/04/2011 6.3 20.45 23 488 0.57 -18 187 0.6 NM <0.5 <5 1710 <0.08 28.3 NA NA <5 NA <5 113 <5 366 <10 NA NA 111 0.28 311 NA MW-19 03/06/2012 6.7 22.07 19 454 1.1 -118 87 0.28 NM <0.5 <5 1920 <0.08 28.8 NA NA <5 NA <5 <50 <5 14.6 <10 NA NA 109 0.23 329 NA MW-19 06/05/2012 6.3 21.66 20 646 1.94 -44 161 1.34 NM <0.5 <5 1940 <0.08 52.2 NA NA <5 NA <5 73.8 <5 436 <10 NA NA 151 0.38 404 NA MW-19 DUP 06/05/2012 6.3 21.66 20 646 1.94 -44 161 1.34 NM <0.5 <5 1920 <0.08 52.5 NA NA <5 NA <5 121 <5 410 <10 NA NA 151 0.38 398 NA MW-19 10/03/2012 6.7 21.61 22 540 3.81 132 337 1.06 NM <0.5 <5 1680 <0.08 30.5 NA NA <5 NA <5 <50 <5 14.3 <10 NA NA 148 <0.1 304 NA MW-19 03/12/2013 6.5 21.54 20 684 0.34 52 257 1.22 NM <1 <1 1830 <1 73 NA NA <5 NA <5 117 <1 508 <1 NA NA 130 0.62 470 NA MW-19 06/12/2013 6.2 21.20 23 819 0.46 NM NM 1.64 NM <1 <1 1710 <1 69 NA NA <5 NA <5 504 <1 539 <1 NA NA 110 0.311 480 NA MW-19 10/02/2013 6.4 20.51 23 845 0.43 31 236 1.5 NM <1 <1 1990 <1 51 NA NA <5 NA <5 528 <1 531 <1 NA NA 120 0.43 500 NA MW-19 03/04/2014 6.6 22.70 17 677 0.31 216 421 1 NM <1 <1 2020 <1 53 NA NA <5 NA <5 646 <1 475 <1 NA NA 130 0.32 490 NA MW-19 06/03/2014 6.5 21.18 20 781 NM 44 249 0.97 NM <1 <1 2110 <1 43 NA NA <5 NA <5 725 <1 497 <1 NA NA 130 0.299 480 NA MW-19 10/02/2014 6.3 19.90 22 735 0.28 20 225 0.91 NM <1 2.23 2190 <1 44 NA NA <5 NA <5 1080 <1 489 <1 NA NA 140 0.464 470 NA MW-19 03/11/2015 6.4 20.10 20 679 0.31 187 392 1.12 NM <1 2.22 2270 <1 28 NA NA <5 NA <5 1380 <1 444 <1 NA NA 150 0.405 400 NA MW-19 06/01/2015 6.4 20.50 22 630 0.39 42 247 5.44 NM <1 2.62 2080 <1 28 NA NA <5 5.27 <5 914 <1 386 <1 31.2 NA 140 0.458 380 NA MW-19 10/13/2015 6.4 17.37 23 588 0.4 83 288 1.22 NM <1 2.11 2010 <1 30 NA NA <5 3.25 <5 527 <1 403 <1 32.7 1680 140 0.52 42 1.03 MW-19 03/08/2016 6.5 19.56 20 559 1.91 28 233 0.5 0 <1 2.12 1700 <1 35 NA NA <5 2.2 <5 359 <1 258 <1 31.1 1390 140 0.27 320 0.88 MW-19 DUP 03/08/2016 6.5 19.56 20 559 1.91 28 233 0.5 0 <1 2.24 1730 <1 36 NA NA <5 2.38 <5 414 <1 282 <1 31.8 1420 130 0.227 300 1.09 MW-19 06/14/2016 6.5 20.90 23 520 1.08 72 277 0.77 NM <1 2.12 1620 <1 39 NA NA <5 2.41 <5 416 <1 296 <1 28.1 1270 130 0.284 280 1.51 MW-20D 06/10/2015 7.0 8.21 21 605 0.3 -156 49 4.3 0.5 <1 2.25 305 <1 78 NA NA <1 <1 <1 864 <1 131 <1 57.9 187 66 <0.2 340 <0.3 MW-20D DUP 06/10/2015 7.0 8.21 21 605 0.3 -156 49 4.3 0.5 <1 5.23 408 <1 77 NA NA <1 <1 <1 1270 <1 192 <1 59.2 227 67 <0.2 340 0.358 MW-21C 10/03/2011 7.0 20.20 21 610 NM -10 195 0.2 NM NA 6.2 1640 NA NA NA NA NA NA NA 947 NA 1200 <10 NA NA 117 NA 511 NA MW-21C 01/18/2012 6.7 21.63 18 452 0.2 -35 170 1.4 NM NA <5 1490 NA NA NA NA NA NA NA 1730 NA 1520 <10 NA NA 138 NA 404 NA MW-21C 10/03/2012 6.6 21.42 23 796 1.38 -59 146 9.38 NM <0.5 5.8 1720 <0.08 76.2 NA NA <5 NA <5 6430 <5 1460 <10 NA NA 814 <0.1 447 NA MW-21C 03/12/2013 6.5 21.18 20 803 0.43 -26 179 3.24 NM <1 15 1660 <1 79 NA NA <5 NA <5 7680 <1 1350 <1 NA NA 120 <0.2 500 NA MW-21C 06/12/2013 6.4 20.96 21 746 1.57 NM NM 7.29 NM <1 1.25 1730 <1 67 NA NA <5 NA <5 727 <1 764 <1 NA NA 140 <0.2 450 NA MW-21C 10/02/2013 6.5 20.35 24 873 0.46 -42 163 9.39 NM <1 22.8 1510 <1 68 NA NA <5 NA <5 4910 <1 874 <1 NA NA 96 <0.2 500 NA MW-21C 03/04/2014 6.8 21.47 16 691 0.39 9 214 9.92 NM <1 27.6 1830 <1 63 NA NA <5 NA <5 6600 <1 808 <1 NA NA 120 <0.2 480 NA MW-21C 06/03/2014 6.6 21.00 20 804 NM -25 180 7.24 NM <1 28.5 2000 <1 60 NA NA <5 NA <5 5310 <1 805 <1 NA NA 110 <0.2 490 NA MW-21C 10/02/2014 6.4 19.80 23 769 0.3 -52 153 7.14 NM <1 45 2210 <1 53 NA NA <5 NA <5 6160 <1 652 <1 NA NA 130 <0.2 490 NA MW-21C 03/11/2015 6.6 19.99 21 728 0.27 -35 171 8.06 NM <1 55.4 2020 <1 32 NA NA <5 NA <5 5550 <1 493 <1 NA NA 130 <0.2 420 NA MW-21C 06/01/2015 6.5 20.35 21 697 0.2 -42 163 15.9 NM <1 53.8 2120 <1 34 NA NA <5 10.6 <5 5110 <1 430 <1 34.8 NA 140 <0.2 420 NA MW-21C 10/13/2015 6.5 17.49 23 579 0.3 -30 174 8.68 NM <1 75.9 1890 <1 27 NA NA <5 9.4 <5 5890 <1 448 <1 28.5 1650 120 <0.2 350 1.35 MW-21C 03/08/2016 6.7 19.53 19 532 4.15 105 310 9.57 0 <1 14.3 1200 <1 28 NA NA <5 <1 <5 728 <1 31 <1 19.8 992 130 <0.2 330 0.326 MW-21C 06/15/2016 6.6 20.79 23 339 0.87 -22 183 9.98 NM <1 47.3 1070 <1 21 NA NA <5 5.02 <5 3320 <1 358 <1 17 836 74 <0.2 180 1.11 MW-22C 10/03/2011 6.9 8.58 24 641 6.3 -53 152 0.41 NM NA <5 1680 NA NA NA NA NA NA NA 171 NA 737 <10 NA NA 122 NA 400 NA MW-22C 01/17/2012 6.8 10.56 20 516 11.83 38 243 1.4 NM NA <5 1650 NA NA NA NA NA NA NA 256 NA 814 <10 NA NA 125 NA 341 NA MW-22C 10/03/2012 6.3 10.02 24 652 0.78 14 219 1.2 NM <0.5 <5 2100 <0.08 36 NA NA <5 NA <5 286 <5 780 <10 NA NA 172 0.35 380 NA MW-22C 03/12/2013 6.4 9.99 19 602 0.43 66 271 1 NM <1 <1 1840 <1 34 NA NA <5 NA <5 431 <1 798 <1 NA NA 160 0.296 390 NA MW-22C 06/12/2013 6.2 9.81 23 763 0.3 86 291 1.86 NM <1 <1 2250 <1 39 NA NA <5 NA <5 262 <1 828 <1 NA NA 160 0.251 480 NA MW-22C 10/02/2013 6.3 8.82 25 764 0.42 96 301 2.16 NM <1 <1 2290 <1 32 NA NA <5 NA <5 230 <1 1330 <1 NA NA 150 0.25 460 NA MW-22C 03/04/2014 7.0 10.37 15 526 5.55 197 402 0.65 NM <1 <1 1950 <1 35 NA NA <5 NA <5 <10 <1 18 <1 NA NA 160 <0.2 390 NA MW-22C 06/02/2014 6.5 9.73 22 755 NM 45 250 4.1 NM <1 <1 2500 <1 37 NA NA <5 NA <5 628 <1 1360 <1 NA NA 160 0.226 490 NA MW-22C 10/02/2014 6.2 8.12 23 710 0.37 163 368 2.23 NM <1 <1 2660 <1 33 NA NA <5 NA <5 608 <1 1710 <1 NA NA 160 0.422 470 NA MW-22C 03/11/2015 6.4 8.43 20 733 0.22 128 333 2.93 NM <1 <1 2690 <1 34 NA NA <5 NA <5 499 <1 986 <1 NA NA 160 0.506 430 NA MW-22C 06/01/2015 6.4 8.87 22 684 0.4 23 228 0.51 NM <1 <1 2560 <1 41 NA NA <5 4.77 <5 141 <1 732 <1 35.9 NA 160 0.398 440 NA MW-22C 10/13/2015 6.3 4.81 23 664 0.3 164 369 0.57 NM <1 <1 2460 <1 52 NA NA <5 6.34 <5 166 <1 865 <1 39.7 2090 170 0.631 430 <0.3 MW-22C 03/08/2016 6.2 7.53 20 757 0.31 34 239 1 0.5 <1 <1 2550 <1 67 NA NA <5 10.7 <5 346 <1 981 <1 49.5 1960 200 0.49 460 <0.3 MW-22C 06/15/2016 6.3 9.26 23 709 0.38 94 299 1.03 NM <1 <1 2650 <1 65 NA NA <5 9.43 <5 237 <1 825 <1 44.6 1900 190 0.427 420 0.335 MW-23C 10/03/2011 6.6 5.46 23 618 6.8 -50 155 1.41 NM NA <5 1640 NA NA NA NA NA NA NA 311 NA 970 <10 NA NA 131 NA 460 NA TABLE 4-8 LOWER SURFICIAL GROUNDWATER EXCEEDANCES INCORPORATING PROVISIONAL BACKGROUND L.V. SUTTON ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, WILMINGTON, NC P:\Duke Energy Progress.1026\108. Sutton Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 4-8 Lower Surficial GW Exceedances Inc Provisional BG.xlsx Page 9 of 11 pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Boron Cadmium Chloride Chromium (VI) Chromium (VI) Speciation Chromium Cobalt Copper Iron Lead Manganese Selenium Sodium Strontium Sulfate Thallium Total Dissolved Solids Vanadium S.U.ft Deg C umhos /cm mg/L mV mV NTUs mg/L ug/L ug/L ug/L ug/L mg/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L mg/L ug/L mg/L ug/L mg/L ug/L 6.5-8.5 NE NE NE NE NE NE NE NE 1*10 700 2 250 0.07^0.07^10 1*1000 300 15 50 20 NE NE 250 0.2*500 0.3* 4.9-7.4 NE NE NE NE NE NE NE NE 0.14 7.416 60.74 NE 182.3 0.279 0.279+4.185 7.53 27.6 6583 0.24 1114 2.497 41.62 167 18.07 NE 338.8 1.705 Sample ID Sample Collection Date Reporting Units Analytical Parameter Field Parameters Analytical Results Provisional Background 15A NCAC 02L Standard MW-23C 01/16/2012 6.4 7.67 19 413 0.24 136 341 0.9 NM NA <5 1780 NA NA NA NA NA NA NA 53.4 NA 1190 <10 NA NA 134 NA 335 NA MW-23C 10/02/2012 6.1 6.93 23 766 0.67 44 249 1.37 NM <0.5 <5 2580 <0.08 71.1 NA NA <5 NA <5 176 <5 1050 <10 NA NA 200 <0.1 456 NA MW-23C 03/12/2013 6.2 7.14 19 758 0.28 85 290 0.92 NM <1 <1 2400 <1 76 NA NA <5 NA <5 187 <1 1150 <1 NA NA 180 <0.2 470 NA MW-23C 06/12/2013 6.0 7.00 23 842 0.31 65 270 1.58 NM <1 <1 2710 <1 90 NA NA <5 NA <5 370 <1 1300 <1 NA NA 200 <0.2 530 NA MW-23C 10/02/2013 6.1 5.72 25 878 0.41 94 299 1.66 NM <1 <1 3000 <1 74 NA NA <5 NA <5 395 <1 1500 <1 NA NA 210 <0.2 540 NA MW-23C 03/04/2014 6.6 7.58 15 677 0.51 206 411 3.46 NM <1 <1 3000 <1 98 NA NA <5 NA 10 364 <1 1590 <1 NA NA 190 <0.2 540 NA MW-23C 06/02/2014 6.3 7.76 22 850 NM 83 288 2.8 NM <1 <1 2970 <1 89 NA NA <5 NA <5 340 <1 1630 <1 NA NA 190 <0.2 540 NA MW-23C 10/01/2014 6.0 4.95 22 856 0.3 186 391 2.16 NM <1 <1 3600 <1 76 NA NA <5 NA <5 445 <1 1520 <1 NA NA 240 0.212 580 NA MW-23C DUP 10/01/2014 6.0 4.95 22 856 0.3 186 425 2.16 NM <1 <1 3600 <1 76 NA NA <5 NA <5 440 <1 1540 <1 NA NA 220 <0.2 560 NA MW-23C 03/10/2015 6.4 5.30 18 636 0.16 301 506 4.59 NM <1 <1 3060 <1 32 NA NA <5 NA <5 147 <1 384 <1 NA NA 120 <0.2 380 NA MW-23C 06/02/2015 6.6 5.94 22 454 0.33 16 221 1.27 <0.5 <1 <1 1940 <1 29 NA 0.022 <1 4.83 <1 76 <1 287 <1 22.1 1520 69 <0.2 280 0.323 MW-23C 11/18/2015 6.5 2.99 20 307 0.8 209 414 1.38 NM <1 <1 1080 <1 29 NA NA <5 5.13 <5 28 <1 133 6.16 17.7 972 49 <0.2 190 <0.3 MW-23C 12/04/2015 6.7 3.47 16 238 1.08 62 267 0.56 0 NA NA NA NA NA <0.03 NA NA NA NA NA NA NA NA NA NA NA NA NA NA MW-23C 03/08/2016 6.3 4.09 19 591 0.21 135 340 0.2 0 <1 <1 1720 <1 74 NA NA <5 12.4 <5 25 <1 210 5.75 42.9 1700 110 <0.2 360 0.469 MW-23C 06/15/2016 6.4 6.12 22 263 1.07 168 373 1.94 NM <1 <1 938 <1 21 NA NA <5 6.3 <5 61 <1 86 10.3 14.7 788 52 <0.2 140 0.691 MW-24C 10/04/2011 5.8 3.52 20 1003 NM 78 283 3.84 NM NA <5 1240 NA NA NA NA NA NA NA 583 NA 852 <10 NA NA 137 NA 560 NA MW-24C 01/17/2012 6.0 5.71 19 909 13.03 66 271 2.1 NM NA <5 1240 NA NA NA NA NA NA NA 515 NA 891 <10 NA NA 145 NA 597 NA MW-24C 10/03/2012 5.9 4.69 25 1027 0.87 32 237 4.62 NM <0.5 <5 1160 0.083 164 NA NA <5 NA <5 2860 <5 2360 <10 NA NA 163 <0.1 579 NA MW-24C 03/13/2013 5.8 5.15 17 919 0.29 67 272 3.11 NM <1 7.37 1030 <1 160 NA NA <5 NA <5 6230 <1 2250 <1 NA NA 150 <0.2 530 NA MW-24C 06/12/2013 5.8 5.07 22 951 1.22 84 289 4.63 NM <1 3.33 999 <1 170 NA NA <5 NA <5 2580 <1 2280 <1 NA NA 150 <0.2 550 NA MW-24C 10/02/2013 5.6 3.44 24 967 0.34 135 340 4.07 NM <1 2.81 988 <1 170 NA NA <5 NA <5 2290 <1 2150 <1 NA NA 150 0.23 560 NA MW-24C 03/05/2014 6.1 5.59 14 1070 0.56 196 401 5.83 NM <1 5.81 1030 <1 190 NA NA <5 NA <5 7450 <1 2060 <1 NA NA 160 <0.2 610 NA MW-24C 06/03/2014 5.8 4.97 26 943 NM 138 343 8.1 NM <1 3.02 1090 <1 170 NA NA <5 NA <5 3600 <1 1110 <1 NA NA 150 <0.2 550 NA MW-24C 10/01/2014 5.0 2.87 23 904 0.39 239 444 4.94 NM <1 1.54 1130 <1 170 NA NA <5 NA <5 1990 <1 1180 <1 NA NA 160 <0.2 560 NA MW-24C 03/10/2015 5.4 3.16 18 899 0.27 294 499 5.32 NM <1 3.56 1150 <1 160 NA NA <5 NA <5 5600 <1 1470 <1 NA NA 160 <0.2 500 NA MW-24C 06/02/2015 5.5 4.00 22 858 1.48 77 282 0.69 3 <1 <1 405 <1 150 NA 0.019 <1 <1 <1 <10 <1 46 <1 10.9 534 150 <0.2 500 0.543 MW-24C 06/15/2016 5.3 3.55 22 770 0.2 161 366 2.26 NM <1 1.66 1030 <1 140 NA NA <5 15.5 <5 2770 <1 958 <1 74.3 474 180 <0.2 440 0.613 MW-27C 05/22/2014 5.4 NM 20 358 1.06 104 NM 37.9 NM <5.3 <6.8 517 <0.76 52.3 NA NA <30 NA <2.7 1090 <4.7 342 55 0.0502 294 96.9 <5.4 258 <10 MW-27C 12/04/2015 4.8 3.82 17 430 0.92 299 504 7.05 0 <1 <1 542 <1 60 0.12 NA <1 1.84 <1 108 <1 224 65.3 44.6 267 110 <0.2 230 0.383 MW-27C 01/13/2016 4.9 3.84 15 406 0.79 234 439 4.04 0 <1 <1 459 <1 54 0.07 NA <1 1.76 <1 44 <1 178 61.9 41.3 229 110 <0.2 230 <0.3 MW-28C 10/03/2011 6.3 21.69 22 121 11.1 -26 179 1.58 NM NA <5 94.9 NA NA NA NA NA NA NA 59 NA 58.1 <10 NA NA 17.6 NA 1240 NA MW-28C 01/17/2012 6.0 23.22 19 106 2.43 160 365 1.9 NM NA <5 193 NA NA NA NA NA NA NA <50 NA 59.9 <10 NA NA 18 NA 69 NA MW-28C 10/03/2012 6.2 22.84 23 370 0.93 96 301 2.1 NM <0.5 <5 652 <0.08 37.7 NA NA <5 NA <5 <50 <5 245 <10 NA NA 47.2 <0.1 177 NA MW-28C 03/12/2013 6.2 22.39 20 342 0.28 96 301 1.01 NM <1 <1 1030 <1 18 NA NA <5 NA <5 20 <1 367 <1 NA NA 78 <0.2 210 NA MW-28C 06/12/2013 6.0 22.23 23 431 0.34 56 261 1.29 NM <1 <1 1260 <1 30 NA NA <5 NA <5 32 <1 409 <1 NA NA 100 <0.2 250 NA MW-28C DUP 06/12/2013 6.0 22.23 23 431 0.34 56 261 1.29 NM <1 <1 1250 <1 30 NA NA <5 NA <5 39 <1 402 <1 NA NA 100 <0.2 270 NA MW-28C 03/04/2014 6.2 22.58 16 211 0.33 203 408 0.75 NM <1 <1 711 <1 17 NA NA <5 NA <5 21 <1 166 1.51 NA NA 57 <0.2 150 NA MW-28C 06/01/2015 5.6 21.42 22 55 5.26 77 282 1.09 NM <1 <1 <50 <1 2.6 NA NA <5 <1 <5 <10 <1 8 <1 1.55 NA 10 <0.2 26 NA MW-28C 10/12/2015 5.5 18.59 21 47 6.6 185 390 0.61 NM <1 <1 <50 <1 2.6 NA NA <5 <1 <5 <10 <1 9 <1 1.32 57 8.6 <0.2 <25 0.573 MW-28C 03/08/2016 5.1 20.60 20 48 6.74 266 471 0.3 0 <1 <1 <50 <1 3.4 NA NA <5 <1 <5 <10 <1 10 <1 1.66 44 11 <0.2 <25 0.362 MW-28C 06/14/2016 5.5 21.93 26 47 5.73 221 426 0.52 NM <1 <1 <50 <1 3.9 NA NA <5 <1 <5 10 <1 11 <1 1.63 44 11 <0.2 <25 0.447 MW-31C 10/04/2011 5.5 6.55 22 620 7.6 -4 201 0.72 NM NA <5 1020 NA NA NA NA NA NA NA 1220 NA 1470 <10 NA NA 131 NA 349 NA MW-31C 01/17/2012 5.3 8.63 18 518 0.26 150 355 0.9 NM NA <5 1130 NA NA NA NA NA NA NA 2330 NA 2000 <10 NA NA 136 NA 386 NA MW-31C 10/02/2012 5.1 7.64 23 737 0.69 70 275 9.78 NM <0.5 <5 1120 <0.08 114 NA NA <5 NA <5 2700 <5 1790 <10 NA NA 174 <0.1 407 NA MW-31C 03/13/2013 5.3 8.06 16 679 0.4 131 336 6.15 NM <1 1.55 1030 <1 110 NA NA <5 NA <5 2820 <1 1800 <1 NA NA 150 <0.2 400 NA MW-31C 06/13/2013 5.1 8.20 23 691 0.35 147 352 4.09 NM <1 1.25 985 <1 110 NA NA <5 NA <5 2760 <1 1760 <1 NA NA 150 <0.2 420 NA MW-31C 10/03/2013 5.2 6.27 23 828 0.34 167 372 1.5 NM <1 <1 1020 <1 140 NA NA <5 NA <5 2550 <1 1910 <1 NA NA 150 <0.2 490 NA MW-31C 03/05/2014 5.8 8.42 15 690 2.56 312 517 3.23 NM <1 <1 1030 <1 150 NA NA <5 NA <5 232 <1 220 <1 NA NA 150 <0.2 490 NA MW-31C 06/03/2014 5.2 7.68 24 941 NM 142 347 2.8 NM <1 <1 1410 <1 170 NA NA <5 NA <5 3420 <1 2390 <1 NA NA 150 <0.2 570 NA MW-31C 10/02/2014 5.0 5.46 23 905 0.3 260 465 1.39 NM <1 <1 1200 <1 180 NA NA <5 NA <5 2850 <1 1870 <1 NA NA 150 <0.2 550 NA TABLE 4-8 LOWER SURFICIAL GROUNDWATER EXCEEDANCES INCORPORATING PROVISIONAL BACKGROUND L.V. SUTTON ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, WILMINGTON, NC P:\Duke Energy Progress.1026\108. Sutton Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 4-8 Lower Surficial GW Exceedances Inc Provisional BG.xlsx Page 10 of 11 pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Boron Cadmium Chloride Chromium (VI) Chromium (VI) Speciation Chromium Cobalt Copper Iron Lead Manganese Selenium Sodium Strontium Sulfate Thallium Total Dissolved Solids Vanadium S.U.ft Deg C umhos /cm mg/L mV mV NTUs mg/L ug/L ug/L ug/L ug/L mg/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L mg/L ug/L mg/L ug/L mg/L ug/L 6.5-8.5 NE NE NE NE NE NE NE NE 1*10 700 2 250 0.07^0.07^10 1*1000 300 15 50 20 NE NE 250 0.2*500 0.3* 4.9-7.4 NE NE NE NE NE NE NE NE 0.14 7.416 60.74 NE 182.3 0.279 0.279+4.185 7.53 27.6 6583 0.24 1114 2.497 41.62 167 18.07 NE 338.8 1.705 Sample ID Sample Collection Date Reporting Units Analytical Parameter Field Parameters Analytical Results Provisional Background 15A NCAC 02L Standard MW-31C 03/10/2015 5.2 5.70 18 907 0.26 250 455 1.57 NM <1 <1 1190 <1 170 NA NA <5 NA <5 3440 <1 1840 <1 NA NA 160 <0.2 510 NA MW-31C 06/02/2015 5.2 6.59 21 908 0.63 144 349 3.93 3 <1 <1 1130 <1 170 NA NA <1 <1 <1 2960 <1 1640 <1 77.9 648 160 <0.2 540 <0.3 MW-31C 06/05/2015 5.3 5.93 20 877 0.61 82 287 3.83 2.5 <1 <1 1180 <1 170 NA NA <1 1.1 <1 2690 <1 1740 <1 88.1 690 160 <0.2 540 <0.3 MW-31C 11/18/2015 5.2 3.09 20 858 0.8 225 430 7.2 NM <1 1.3 1190 <1 170 NA NA <5 <1 <5 3210 <1 1750 <1 80.5 648 150 <0.2 500 0.426 MW-31C 12/04/2015 5.4 3.45 18 747 2.2 357 562 0.9 ND NA NA NA NA NA 0.044 NA NA NA NA NA NA NA NA NA NA NA NA NA NA MW-31C 01/13/2016 5.3 3.88 16 875 0.56 128 333 1.06 0 <1 <1 1170 <1 160 <0.03 NA <1 <1 <1 2660 <1 1710 <1 78 588 150 <0.2 460 0.323 MW-31C 03/09/2016 5.4 3.99 18 879 0.5 140 345 0.8 2 <1 <1 1250 <1 160 NA NA <5 <1 <5 2740 <1 1840 <1 77.5 619 150 <0.2 480 0.346 MW-31C 06/15/2016 5.4 6.15 22 822 0.35 81 286 3.63 NM <1 <1 1260 <1 160 NA NA <5 2.27 <5 3160 <1 1720 <1 71 587 160 <0.2 460 0.6 MW-32C 06/03/2014 5.5 25.65 22 128 NM 244 449 9.2 NM <1 1.36 248 <1 5.8 NA NA <5 NA <5 424 <1 24 <1 NA NA 24 <0.2 57 NA MW-32C 06/01/2015 5.0 24.64 22 70 3.97 121 326 2.37 NM <1 <1 115 <1 4.2 NA NA <5 <1 <5 30 <1 30 <1 2.77 NA 16 <0.2 31 NA MW-32C 10/13/2015 4.8 20.45 21 48 3.7 258 463 1.69 NM <1 <1 60 <1 3.4 NA NA <5 <1 <5 20 <1 30 <1 2.09 36 13 <0.2 <25 <0.3 MW-32C 03/09/2016 4.8 23.19 20 56 2.58 277 482 0.9 0 <1 <1 84 <1 3.5 NA NA <5 <1 <5 17 <1 31 <1 2.4 46 14 <0.2 39 <0.3 MW-32C 06/15/2016 4.7 24.94 21 71 3.06 314 519 1.36 NM <1 <1 87 <1 3.7 NA NA <5 <1 <5 18 <1 29 <1 2.26 54 19 <0.2 35 <0.3 MW-33C 06/01/2015 4.6 14.61 23 55 1.06 134 339 0.96 NM <1 <1 <50 <1 4.5 NA NA <5 <1 <5 20 <1 30 <1 2.58 NA 12 <0.2 30 NA MW-33C 10/13/2015 5.1 10.30 22 52 0.9 231 436 0.61 NM <1 <1 <50 <1 3.8 NA NA <5 <1 <5 20 <1 24 <1 2.21 34 10 <0.2 27 0.326 MW-33C 03/09/2016 4.9 12.95 20 50 0.76 115 320 0.7 0 <1 <1 <50 <1 3.4 NA NA <5 <1 <5 21 <1 31 <1 2.12 30 10 <0.2 28 0.346 MW-33C 06/15/2016 4.9 14.80 22 57 1.1 297 502 1.07 NM <1 <1 <50 <1 3.8 NA NA <5 <1 <5 25 <1 36 <1 1.99 31 15 <0.2 <25 0.479 MW-34C 05/28/2014 5.9 NM 22 465 0.15 75 NM 7.85 NM <5.3 <6.8 491 <0.76 61.3 NA NA <1.6 NA <2.7 613 <4.7 303 <40 0.0722 311 122 <5.4 339 <2 MW-35C 05/28/2014 6.9 NM 23 620 0.54 66 NM 81.3 NM <5.3 <6.8 412 <0.76 58.4 NA NA <30 NA <20 2810 <4.7 345 55 0.0894 299 131 <5.4 419 <10 MW-36C 05/21/2014 6.3 NM 21 5 0.23 71 NM 9.44 NM <5.3 <6.8 522 <0.76 54.8 NA NA <30 NA NA 877 <4.7 558 <40 0.0616 324 117 <5.4 327 <10 MW-36C 09/23/2015 5.2 9.05 21 844 0.49 112 317 1.58 NM <1 <1 525 <1 NA NA NA <1 18 <1 76 <1 379 42.7 42.8 281 NA 0.226 NA 0.607 MW-36C 12/04/2015 5.4 7.37 19 449 0.16 250 455 36.9 0 <1 <1 522 <1 51 <0.03 NA 2.38 22.3 1.1 1520 1.32 378 42 43.2 329 110 0.566 240 4.59 MW-36C DUP 12/04/2015 5.4 7.37 19 449 0.16 250 455 36.9 0 <1 <1 528 <1 51 <0.03 NA 2.42 22.5 1.28 1420 1.27 378 43.4 43.2 332 120 0.362 250 4.35 MW-36C 01/13/2016 5.7 7.43 18 477 0.09 217 422 13.7 0 <1 <1 529 <1 60 <0.03 NA 1.24 17.2 <1 965 <1 306 49.1 52.6 388 130 <0.2 320 2.82 MW-38C 06/16/2016 6.0 6.03 22 442 0.16 190 395 9.19 0 <1 <1 384 <1 68 0.27 NA <1 3.58 <1 445 <1 676 21.8 50.5 134 86 <0.2 250 1.18 B2 MW-39C 06/22/2016 5.8 12.39 21 13 0.3 6 211 3.08 NM <1 1.3 <50 <1 5.6 <1.5 NA 1.12 2.93 <1 7330 <1 128 <1 3.42 20 10 <0.2 49 1.61 MW-40C 06/17/2016 5.6 4.52 23 487 0.22 137 342 1.59 0 <1 <1 557 <1 59 <0.03 NA <1 8.39 <1 86 <1 191 26.6 45.4 353 120 0.228 280 <0.3 SMW-1C 04/27/2015 5.7 3.95 20 558 0.2 -85 120 3.8 3.2 <1 <1 783 <1 60 NA NA <1 5.33 <1 9170 <1 852 <1 42.4 467 140 <0.2 330 0.337 SMW-1C 06/05/2015 5.5 2.90 21 561 0.44 106 311 6.81 3.5 <1 <1 776 <1 66 NA NA <1 <1 <1 4250 <1 807 <1 45.2 488 140 <0.2 340 0.402 SMW-1C 09/23/2015 5.0 3.30 22 525 0.5 76 281 2.48 NM <1 <1 742 <1 NA NA NA <1 2.52 <1 592 <1 750 <1 41.7 449 NA <0.2 NA 1.23 SMW-1C 12/03/2015 5.0 0.60 18 457 0.2 -9 196 7.9 0.25 <1 <1 674 <1 55 <0.03 NA <1 2.51 <1 532 <1 705 <1 38.4 400 140 <0.2 280 1.26 SMW-1C 01/13/2016 4.8 1.23 16 452 0.4 114 319 1.1 0.5 <1 <1 706 <1 49 <0.03 NA <1 2.58 <1 232 <1 658 <1 35.2 377 140 <0.2 270 1.02 SMW-2C 03/26/2015 6.4 10.31 20 319 0.2 -440 -235 33.9 4.5 <1 <1 338 <1 28 NA NA 1.08 93.1 <1 19200 <1 1970 <1 18.6 220 72 <0.2 180 0.828 SMW-2C 06/04/2015 5.7 9.70 21 215 0.35 56 261 4.34 5.5 <1 <1 337 <1 23 NA NA <1 3.37 <1 5370 <1 539 <1 15.5 221 49 <0.2 130 <0.3 SMW-2C 12/03/2015 5.9 7.40 19 196 0.7 -101 104 1.9 0.5 <1 <1 402 <1 34 <0.03 NA 1.05 11.8 <1 558 <1 280 <1 22.5 291 72 <0.2 170 0.819 SMW-2C 01/13/2016 5.2 8.27 18 173 0.3 151 356 2.1 0 <1 <1 225 <1 18 <0.03 NA <1 12.3 <1 302 <1 326 <1 10.5 154 66 <0.2 130 0.658 SMW-3C 04/27/2015 5.2 8.90 20 366 0.27 47 252 4.98 1.5 <1 <1 465 <1 39 NA NA <1 15.4 <1 2420 <1 719 <1 25.6 235 94 <0.2 220 0.632 SMW-3C 06/04/2015 4.9 7.66 21 333 0.45 54 259 2.27 1 <1 <1 417 <1 35 NA 0.012 <1 9.21 <1 1510 <1 584 <1 22.5 218 93 <0.2 190 <0.3 SMW-4C 04/28/2015 7.0 5.05 17 251 0.24 -260 -55 52 2.5 <1 1.09 103 <1 18 NA NA 1.03 <1 <1 4990 1.29 220 <1 39.4 56 30 <0.2 210 0.825 SMW-4C 06/05/2015 6.6 4.33 21 203 0.3 -130 75 8.61 3.5 <1 2.56 85 <1 18 NA NA <1 <1 <1 9660 <1 132 <1 22.1 54 16 <0.2 110 0.803 SMW-5C 04/28/2015 6.0 6.02 18 226 0.56 -33 173 2.61 1.5 <1 <1 347 <1 28 NA NA <1 11.4 <1 1890 <1 350 <1 16.4 240 46 <0.2 130 <0.3 SMW-5C 06/05/2015 4.9 5.06 22 230 1.57 239 444 1.86 0 <1 <1 362 <1 33 NA NA <1 2.6 <1 175 <1 130 <1 18 228 53 <0.2 120 <0.3 SMW-5C 01/14/2016 5.0 2.98 17 216 1.51 113 318 0.36 0 <1 <1 345 <1 31 <0.03 NA <1 1.25 <1 164 <1 80 <1 16.1 241 48 <0.2 120 <0.3 SMW-6C 04/29/2015 5.6 6.35 18 216 0.2 11 216 7.51 2.8 <1 4.28 192 <1 19 NA NA <1 7.92 <1 4480 <1 322 <1 11.7 134 43 <0.2 130 0.388 SMW-6C 06/04/2015 5.0 5.21 21 194 0.48 -8 197 2.1 1 <1 2.79 197 <1 20 NA 0.012 <1 3.65 <1 1320 <1 273 <1 11.6 132 40 <0.2 110 <0.3 SMW-6C 01/14/2016 5.4 3.33 16 268 0.3 43 248 1.8 1 <1 1.24 298 <1 34 <0.03 NA <1 6.5 <1 500 <1 370 <1 18.2 178 70 <0.2 150 1.43 S-1 New Well (Duke)02/04/2015 NM NM NM NM NM NM NM NM NM <1 <1 <50 <1 7.6 NA NA <5 <1 <5 70 3.92 24 <1 4.7 27 11 <0.2 35 <0.3 S-1 New Well (Vendor)02/04/2015 6.8 NM 17 63 9.22 NM NM <1 NM <1 <5 24 <2 8.02 <100 NA <5 <1 <3 70 4 23 <5 4.49 25 10.1 <0.2 37.5 <3 S-1 Old Well (Duke)02/04/2015 NM NM NM NM NM NM NM NM NM <1 <1 <50 <1 4.6 NA NA <5 <1 <5 52 <1 27 <1 2.98 17 12 <0.2 28 <0.3 Water Supply Wells TABLE 4-8 LOWER SURFICIAL GROUNDWATER EXCEEDANCES INCORPORATING PROVISIONAL BACKGROUND L.V. SUTTON ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, WILMINGTON, NC P:\Duke Energy Progress.1026\108. Sutton Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 4-8 Lower Surficial GW Exceedances Inc Provisional BG.xlsx Page 11 of 11 pH Water Level Temp Spec Cond DO ORP Eh Turbidity Ferrous Iron Antimony Arsenic Boron Cadmium Chloride Chromium (VI) Chromium (VI) Speciation Chromium Cobalt Copper Iron Lead Manganese Selenium Sodium Strontium Sulfate Thallium Total Dissolved Solids Vanadium S.U.ft Deg C umhos /cm mg/L mV mV NTUs mg/L ug/L ug/L ug/L ug/L mg/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L mg/L ug/L mg/L ug/L mg/L ug/L 6.5-8.5 NE NE NE NE NE NE NE NE 1*10 700 2 250 0.07^0.07^10 1*1000 300 15 50 20 NE NE 250 0.2*500 0.3* 4.9-7.4 NE NE NE NE NE NE NE NE 0.14 7.416 60.74 NE 182.3 0.279 0.279+4.185 7.53 27.6 6583 0.24 1114 2.497 41.62 167 18.07 NE 338.8 1.705 Sample ID Sample Collection Date Reporting Units Analytical Parameter Field Parameters Analytical Results Provisional Background 15A NCAC 02L Standard S-1 Old Well (Vendor)02/04/2015 5.6 NM 19 53 6.24 NM NM <1 NM <1 <5 15 <2 4.87 <100 NA <5 <1 3 58 <3 25 <5 2.9 16 9.67 <0.2 32 3 S-2 Pumphouse (Duke)03/05/2015 NM NM NM NM NM NM NM NM NM <1 <1 607 <1 24 NA NA <5 2.04 8 28 <1 302 1.71 16.8 378 72 <0.2 170 <0.3 S-2 Pumphouse (Vendor)03/05/2015 5.4 NM 22 263 5.8 NM NM 0.5 NM <1 <1 690 <1 25 <20 NA <1 2 3 24 <1 295 <10 18.3 365 69 <1 159 <1 S-2 Well 1 & 2 (Duke)03/05/2015 NM NM NM NM NM NM NM NM NM <1 <1 166 <1 25 NA NA <5 1.56 <5 529 <1 292 <1 23.2 254 160 <0.2 350 <0.3 S-2 Well 1 & 2 (Vendor)03/05/2015 6.0 NM 19 506 6.6 NM NM 5.3 NM <1 <1 160 <1 25 <20 NA <1 2 4 635 <1 278 <10 24.1 287 160 <1 326 <1 S-3 (Duke)03/02/2015 NM NM NM NM NM NM NM NM NM <1 <1 562 <1 28 NA NA <5 2.27 <5 182 <1 283 2.26 19.6 323 82 <0.2 180 <0.3 S-3 (Vendor)03/02/2015 6.4 NM 20 291 5.09 NM NM 0.5 NM <1 <1 600 <1 20 <20 NA <1 2 1 189 <1 274 <10 20.2 302 76 <1 185 <1 S-4 (Duke)03/11/2015 NM NM NM NM NM NM NM NM NM <1 <1 190 <1 13 NA NA <5 <1 209 254 4.64 25 <1 9.88 100 43 <0.2 89 <0.3 S-4 (Vendor)03/11/2015 5.6 NM 17 194 5 NM NM 1.3 NM <1 <1 180 <1 13 <20 NA <1 <1 218 318 5 23 <10 10.4 93 41 <1 125 <1 S-6 (Duke)02/04/2015 NM NM NM NM NM NM NM NM NM <1 <1 <50 <1 2.8 NA NA <5 <1 <5 16 <1 29 <1 1.86 20 14 <0.2 <25 <0.3 S-6 (Vendor)02/04/2015 5.1 NM 19 47 6.61 NM NM <1 NM <1 <5 12 <2 2.95 <100 NA <5 <1 <3 <20 <3 28 <5 1.78 20 8.91 <0.2 25.5 <3 S-7 (Duke)02/25/2015 NM NM NM NM NM NM NM NM NM <1 <1 <50 <1 4.3 NA NA <5 <1 <5 <10 <1 18 <1 2.98 26 12 <0.2 61 <0.3 S-7 (Vendor)02/25/2015 5.6 NM 19 96 4.52 NM NM <1 NM <1 <5 20.7 <2 4.41 <100 NA <5 <1 <3 <20 <3 18.4 <5 2.9 26.7 11.9 <0.2 63 <0.3 S-8 Well 1 (Duke)03/05/2015 NM NM NM NM NM NM NM NM NM <1 1.26 <50 <1 4.2 NA NA <5 3.21 6 2200 <1 80 <1 2.89 17 7 <0.2 36 <0.3 S-8 Well 1 (Vendor)03/05/2015 5.9 NM 22 54 5.8 NM NM 0.6 NM <1 2 20 <1 <5 <20 NA <1 3 5 1940 <1 74 <1 2.82 16 <15 <1 30 <1 S-8 Well 1 (Vendor)05/27/2015 5.9 NM 22 55 5.73 NM NM <1 NM <1 <5 17 <2 3.39 <20 NA <5 3 <3 1950 <3 68 <5 2.13 14 5.84 <0.2 20.7 <0.3 S-8 Well 1 Post Filter (Vendor)05/27/2015 5.8 NM 28 61 6.98 NM NM <1 NM <1 <5 19 <2 3.31 <20 NA <5 3 <3 2070 <3 68 <5 2.09 14 5.33 <0.2 24 <0.3 S-8 Well 2 (Duke)03/05/2015 NM NM NM NM NM NM NM NM NM <1 <1 224 <1 19 NA NA <5 3.59 10 51 <1 148 <1 11.3 139 35 <0.2 96 <0.3 S-8 Well 2 (Vendor)03/05/2015 5.2 NM 19 156 4.1 NM NM 0.2 NM <1 <1 250 <1 19 <20 NA <1 4 8 120 <1 142 <1 11.8 133 33 <1 85 <1 S-8 Well 2 (Vendor)05/27/2015 5.3 NM 22 156 7.85 NM NM <1 NM <1 <5 210 <2 18.2 <20 NA <5 4 <3 94 <3 159 <5 11.5 141 34.6 <0.2 77.3 <0.3 S-12 (Duke)03/18/2015 NM NM NM NM NM NM NM NM NM <1 <1 <50 <1 5.5 NA NA <5 <1 <5 272 <1 75 <1 3.12 70 29 <0.2 94 <0.3 S-12 (Vendor)03/18/2015 6.8 NM 17 178 8.45 NM NM 1.37 NM <1 <5 34 <2 5.29 <100 NA <5 <1 <3 254 <3 66 <5 3.08 70 28 <0.2 104 <0.3 S-17 (Duke)04/30/2015 NM NM NM NM NM NM NM NM NM <1 <1 66 <1 7.1 NA NA <5 <1 35 80 <1 65 <1 5.4 39 26 <0.2 48 <0.3 S-17 (Vendor)04/30/2015 NM NM NM NM 8.4 NM NM <1 NM <1 <0.001 62 <1 15.2 NA NA <1 <0.001 33 33 <0.003 69 <0.01 6.35 45 23 <0.001 75 <0.005 S-18 (Duke)05/19/2015 NM NM NM NM NM NM NM NM NM <1 <1 <50 <1 3.8 NA NA <5 <1 <5 <10 <1 19 <1 3.02 31 15 <0.2 53 0.537 S-18 (Vendor)05/19/2015 6.3 NM 24 100 6.6 NM NM <1 NM <1 <5 26 <2 4.05 <20 NA <5 <1 <3 30 <3 18 <5 3.03 29 16.1 <0.2 59.5 1.2 Prepared by: BER Checked by: MCD Notes: ug/L = microgram per liter NTU = nephelometric turbidity unit mg/L = milligrams per liter Eh = Redox potential S.U. = Standard Unit mV = millivolts NE = Not Established umhos/cm = micro mhos per centimeter Deg C = Degree Celsius DUP = Duplicate DO = Dissolved Oxygen ft = feet Spec Cond = Specific Conductance ORP = Oxidation Reduction Potential ND = Not Detected Temp = Temperature NM = Not Measured NA = Not Analyzed < = concentration not detected at or above the reporting limit. ^ = NC DHHS Health Screening Level * = Interim Maximum Allowable Concentrations (IMACs) of the 15A NCAC 02L Standard, Appendix 1, April, 1, 2013. b = Target analyte detected in method blank at or above the reporting limit. B2 = Target analyte was detected in blank(s) at a concentration greater than 1/2 the reporting limit but less than the reporting limit. D3 = Sample was diluted due to the presence of high levels of non-target analytes or other matrix interference. M1 = Matrix spike recovery exceeds QC limits. + = 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. - Concentration exceeds the 15A NCAC 02L Standard, Appendix 2, april 1, 2013 or provisional background concentration (whichever is greater). TABLE 4-9 UPPER SURFICIAL AQUIFER BACKGROUND UPPER PREDICTION LIMITS L.V. SUTTON ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, WILMINGTON, NC P:\Duke Energy Progress.1026\108. Sutton Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 4-9 Upper Surficial Aquifer Background Upper Prediction Limits.xlsx Page 1 of 1 Constituent Reporting Units Number of Samples Number of Detected Samples Minimum Detected Concentration Maximum Detected Concentration Mean Statistical Method UPL (1 Future Event) UPL (15 Future Samples) UPL (21 Future Samples) Aluminum ug/L 17 17 233 1520 633.8 95% WH Approx. Gamma UPL 1339 2,262 2,391 Antimony ug/L 18 0 --------------------- Arsenic ug/L 18 0 --------------------- Barium ug/L 18 18 7 126 31.58 95% UPL (t) lognormal 112.7 426.7 498 Beryllium ug/L 18 0 --------------------- Boron ug/L 18 2 65 67 66 95% KM Chebyshev UPL 75.02 75.02 75.02 Cadmium ug/L 18 0 --------------------- Chloride mg/L 17 17 1.8 9.1 4.047 95% UPL (np)9.1 9.1 9.1 Chromium (hexavalent)ug/L 13 1 ---0.033 --------------- Chromium ug/L 18 0 --------------------- Cobalt ug/L 17 2 3.64 3.97 3.805 95% KM Chebyshev UPL 5.391 5.391 5.391 Iron ug/L 19 19 12 700 186.3 95% WH Approx. Gamma UPL 610.2 1,373 1,488 Lead ug/L 18 0 --------------------- Manganese ug/L 18 13 6 112 37 95% WH Approx. Gamma UPL 127.4 364.2 403 Nickel ug/L 18 2 2.59 2.76 2.675 95% KM Chebyshev UPL 3.694 3.694 3.694 Nitrate mg/L 3 3 0.37 0.69 0.5 95% UPL (t) lognormal 1.427 44.59 103 Selenium ug/L 18 0 --------------------- Sodium mg/L 18 18 0.00202 7.51 2.437 95% UPL (np)7.51 7.51 7.51 Strontium ug/L 18 8 5 85 35.75 95% KM WH Approx. Gamma UPL 61.46 61.46 61.46 Sulfate mg/L 17 17 3.3 140 23.66 95% UPL (np)140 140 140 Thallium ug/L 18 2 0.35 0.42 0.385 95% KM Chebyshev UPL 0.494 0.494 0.494 Total Dissolved Solids mg/L 17 4 100 230 142.5 95% WH Approx. Gamma UPL 169.6 634.1 716.5 Vanadium ug/L 18 4 1.93 2.63 2.283 95% WH Approx. Gamma UPL 3.204 6.052 6.463 Zinc ug/L 18 4 5 10 6.75 95% WH Approx. Gamma UPL 8.741 28.49 31.84 Prepared by: MCD Checked by: HHS Notes: UPL = Upper Prediction Limit np = Non-parametric Gamma = Gamma data transformation Lognormal = Lognormal data transformation mg/L = milligrams per liter µg/L = micrograms per liter TABLE 4-10 LOWER SURFICIAL AQUIFER BACKGROUND UPPER PREDICTION LIMITS L.V. SUTTON ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, WILMINGTON, NC P:\Duke Energy Progress.1026\108. Sutton Ash Basin GW Assessment Plan\19.EG_CSASUP\Tables\Table 4-10 Lower Surficial Aquifer Background Upper Prediction Limits.xlsx Page 1 of 1 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 (30 Future Samples) Aluminum ug/L 15 14 6 171 36.21 95% KM WH Approx. Gamma UPL 111.6 111.6 111.6 Antimony ug/L 46 1 ---0.14 --------------- Arsenic ug/L 105 27 0.28 9.8 2.329 95% KM Chebyshev UPL (np)7.416 7.416 7.416 Barium ug/L 46 45 16 89 41.02 95% UPL (t) lognormal 78.12 138.4 146.6 Beryllium ug/L 15 0 --------------------- Boron ug/L 46 6 10 30 16.42 95% WH Approx. Gamma UPL 32.6 57.67 60.74 Cadmium ug/L 46 0 --------------------- Chloride mg/L 104 104 2.6 295 39.78 95% UPL (np)182.3 182.3 182.3 Chromium (hexavalent)ug/L 9 2 0.037 0.19 0.114 95% KM Chebyshev UPL (np)0.279 0.279 0.279 Chromium ug/L 46 2 0.61 3 1.805 95% KM Chebyshev UPL (np)4.185 4.185 4.185 Cobalt ug/L 15 10 1.28 3.04 1.961 95% WH Approx. Gamma UPL 3.596 7.041 7.53 Copper ug/L 46 1 ---27.6 --------------- Iron ug/L 104 97 11 9,700 1,333 95% UPL (np)6,583 6,583 6,583 Lead ug/L 46 1 ---0.24 --------------- Manganese ug/L 46 46 14 602 154.7 95% WH Approx. Gamma UPL 472.3 1,040 1,114 Nickel ug/L 46 2 1.3 2 1.65 95% KM Chebyshev UPL (np)2.539 2.539 2.539 Nitrate as N mg-N/L 15 8 0.02 0.136 0.0588 95% WH Approx. Gamma UPL 0.112 0.27 0.294 Nitrate mg/L 39 13 0.02 0.42 0.125 95% WH Approx. Gamma UPL 0.159 0.389 0.42 Selenium ug/L 105 6 1 17 5.5 95% WH Approx. Gamma UPL 0.691 2.272 2.497 Sodium mg/L 15 15 1.79 14.5 7.227 95% WH Approx. Gamma UPL 18.61 38.71 41.62 Strontium ug/L 13 13 12 167 58.77 95% UPL (np)167 167 167 Sulfate mg/L 45 44 5.5 15 9.569 95% WH Approx. Gamma UPL 13.61 17.62 18.07 Thallium ug/L 46 0 --------------------- Total Dissolved Solids mg/L 105 105 8 500 135.7 95% UPL (np)338.8 338.8 338.8 Vanadium ug/L 13 5 0.918 1.15 1.023 95% WH Approx. Gamma UPL 1.203 1.648 1.705 Zinc ug/L 45 15 2 12 7.887 95% WH Approx. Gamma UPL 13.11 26.83 28.59 Prepared by: MCD Checked by: HHS Notes: UPL - Upper Prediction Limit NP - Non-parametric Gamma - Gamma data transformation Lognormal - Lognormal data transformation mg/L = milligrams per liter ug/L = micrograms per liter mg-N/l = milligrams Nitrogen per liter