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Home My WebLink AboutNC0005088_FINAL_CSA_Tables_201801312018 Comprehensive Site Assessment Report January 2018 Cliffside Steam Station SynTerra TABLES TABLE 2-1 WELL CONSTRUCTION DATA CLIFFSIDE STEAM STATION DUKE ENERGY CAROLINAS, MOORESBORO, NC P:\Duke Energy Carolinas\21. CLIFFSIDE\CSA Update\Tables\Table 2-1 Well Construction Page 1 of 5 ID Program Date Installed Flow Layer Material Diameter (Inches) Easting (Feet) Northing (Feet) Measuring Point TOC Elevation (Feet-NAVD 88) Ground Surface Elevation (Feet-NAVD 88) Boring Depth1, 2 (Feet-BGS) Surface Casing Depth2 (Feet-BGS) Total Well Depth (Feet-BGS) Top of Screen Elevation (Feet-NAVD 88) Bottom of Screen Elevation (Feet-NAVD 88) Date Well Abandoned AB-1BRO CAMA 11/9/2017 Bedrock PVC 2 1179479.24 545332.78 773.58 773.94 --127.0 598.94 ---------- AB-1D CAMA 6/4/2015 Deep PVC 2 1179466.53 545332.08 773.44 773.73 135.5 119.4 647.23 121.5 126.5 652.23 647.23 -- AB-1S CAMA 6/2/2015 Shallow PVC 2 1179457.78 545330.77 773.19 773.80 109.0 --704.80 54.0 69.0 719.80 704.80 -- AB-2BRO CAMA 11/8/2017 Bedrock PVC 2 1177112.31 544316.70 773.47 773.75 170.0 80.0 701.75 ---------- AB-2D CAMA 5/4/2015 Deep PVC 2 1177102.27 544298.96 773.00 773.47 80.5 64.5 695.97 72.5 77.5 700.97 695.97 -- AB-2S CAMA 4/29/2015 Shallow PVC 2 1177106.20 544305.19 772.92 773.53 49.0 --724.53 44.0 49.0 729.53 724.53 -- AB-3BR CAMA 2/26/2016 Bedrock PVC 2 1178015.85 543931.26 796.55 793.41 187.0 119.0 607.91 175.5 185.5 617.91 607.91 -- AB-3BRU CAMA 4/2/2015 Deep PVC 2 1178033.57 543946.27 795.78 793.88 130.5 115.5 670.81 118.0 123.0 675.88 670.88 4/12/2017 AB-3BRUA CAMA 4/7/2017 Deep PVC 2 1177995.39 543918.45 796.02 793.26 130.0 --663.26 125.0 130.0 668.26 663.26 -- AB-3SLA CAMA 10/20/2017 Ash Pore Water PVC 2 1178056.53 543965.20 796.90 793.75 72.0 --723.75 60.0 70.0 733.75 723.75 -- AB-3I CAMA 4/10/2015 Shallow PVC 2 1178027.86 543941.37 795.97 793.82 105.0 --691.72 92.0 102.0 701.82 691.82 -- AB-3S CAMA 3/19/2015 Ash Pore Water PVC 2 1178050.31 543959.27 795.64 793.88 37.0 --756.77 22.0 37.0 771.88 756.88 -- AB-3SL CAMA 3/20/2015 Ash Pore Water PVC 2 1178043.47 543953.91 796.02 793.97 72.2 --721.64 62.2 72.2 731.77 721.77 -- AB-4BR CAMA 4/28/2015 Bedrock PVC 2 1178887.51 543722.93 770.66 768.56 120.6 52.5 659.06 104.5 109.5 664.06 659.06 -- AB-4D CAMA 3/28/2015 Deep PVC 2 1178896.54 543723.87 770.59 768.54 70.4 53.1 708.54 55.0 60.0 713.54 708.54 -- AB-4S CAMA 3/30/2015 Ash Pore Water PVC 2 1178877.73 543721.76 770.59 768.51 20.3 --748.51 5.0 20.0 763.51 748.51 -- AB-4SL CAMA 3/25/2015 Ash Pore Water PVC 2 1178871.93 543721.09 770.61 768.51 39.0 --739.81 28.7 38.7 739.81 729.81 -- AB-5BR CAMA 3/1/2016 Bedrock PVC 2 1179103.52 542961.78 772.13 769.10 114.0 --673.00 91.2 96.1 677.90 673.00 -- AB-5BRU CAMA 3/24/2015 Deep PVC 2 1179112.82 542963.70 771.81 769.72 68.2 49.5 704.22 60.5 65.5 709.22 704.22 -- AB-5S CAMA 3/27/2015 Ash Pore Water PVC 2 1179111.06 542958.87 771.74 769.69 43.0 --746.69 5.0 20.0 764.69 749.69 -- AB-6BR CAMA 4/22/2015 Bedrock PVC 2 1178350.92 542716.60 770.61 768.46 110.5 60.5 667.61 96.0 101.0 672.46 667.46 -- AB-6D CAMA 3/24/2015 Deep PVC 2 1178397.12 542709.35 770.68 768.57 76.5 56.5 697.83 65.8 70.8 702.77 697.77 -- AB-6S CAMA 3/26/2015 Ash Pore Water PVC 2 1178366.14 542714.00 770.56 786.41 21.0 --766.48 5.0 20.0 781.41 766.41 -- AD1-1 --9/4/2017 Shallow PVC 2 1172442.60 546332.27 688.44 685.86 30.0 --685.86 15.0 30.0 670.86 655.86 -- AD2-1 --9/4/2017 Shallow PVC 2 1172609.13 546287.08 691.29 688.50 30.0 --688.50 15.0 30.0 673.50 658.50 -- AD2-2 --9/4/2017 Shallow PVC 2 1172499.77 546110.03 682.40 679.61 25.0 --679.61 9.0 24.0 670.61 655.61 -- AD2-3 --9/4/2017 Shallow PVC 2 1172582.49 546114.16 682.63 680.33 30.0 --680.33 15.0 30.0 665.33 650.33 -- AD2-4 --9/4/2017 Shallow PVC 2 1172558.54 546236.51 694.48 692.15 35.0 --692.15 20.0 35.0 672.15 657.15 -- AD3-1 --9/4/2017 Shallow PVC 2 1173268.70 546050.44 684.64 681.76 23.7 --681.76 8.7 23.7 673.06 658.06 -- AD3-2 --9/4/2017 Shallow PVC 2 1173167.71 545984.75 680.62 678.18 22.5 --678.18 7.5 22.5 670.68 655.68 -- AS-1D CAMA 5/26/2015 Deep PVC 2 1177989.02 544824.26 809.41 807.68 131.5 --696.68 106.0 111.0 701.68 696.68 -- AS-1SB CAMA 5/18/2015 Shallow PVC 2 1177983.86 544826.09 809.20 807.46 100.0 --708.46 83.0 98.0 724.46 709.46 -- AS-2BR CAMA 9/23/2016 Bedrock PVC 2 1177805.06 545488.11 698.74 697.12 ----600.12 92.0 97.0 605.12 600.12 -- AS-2D CAMA 5/18/2015 Deep PVC 2 1177801.35 545499.30 697.26 695.62 68.3 53.3 635.62 55.0 60.0 640.62 635.62 -- AS-2S CAMA 5/12/2015 Shallow PVC 2 1177817.37 545494.72 697.84 695.93 33.5 --665.43 15.5 30.5 680.43 665.43 -- AS-3BRU CAMA 5/15/2015 Deep PVC 2 1178583.59 545386.76 754.16 752.59 55.5 13.8 699.10 48.5 53.5 704.10 699.10 -- AS-4D CAMA 5/26/2015 Deep PVC 2 1178502.06 544888.58 837.71 835.82 112.2 92.2 735.82 95.0 100.0 740.82 735.82 -- AS-4S CAMA 5/28/2015 Shallow PVC 2 1178495.92 544893.77 837.49 835.67 95.0 --741.27 84.4 94.4 751.27 741.27 -- AS-5BR CAMA 5/8/2015 Bedrock PVC 2 1178357.59 545349.36 739.77 739.90 119.9 70.3 659.80 75.1 80.1 664.80 659.80 -- AS-5BRU CAMA 4/21/2015 Deep PVC 2 1178362.70 545349.10 740.45 740.59 63.0 48.0 680.59 55.0 60.0 685.59 680.59 -- AS-5S CAMA 4/16/2015 Shallow PVC 2 1178351.05 545349.81 739.72 739.90 45.3 --695.65 29.3 44.3 710.65 695.65 -- AS-6BR CAMA 6/18/2015 Bedrock PVC 2 1178477.25 545108.97 817.89 816.04 185.7 134.2 657.94 153.1 158.1 662.94 657.94 4/12/2017 AS-6BRA CAMA 4/4/2017 Bedrock PVC 2 1178480.08 545090.85 822.29 818.86 ----660.36 153.5 158.5 665.36 660.36 -- AS-6D CAMA 6/12/2015 Deep PVC 2 1178487.30 545101.08 818.30 816.59 135.5 120.2 688.59 123.0 128.0 693.59 688.59 -- AS-6S CAMA 6/1/2015 Shallow PVC 2 1178486.75 545112.15 817.74 816.09 101.5 --715.09 86.0 101.0 730.09 715.09 -- AS-7BR CAMA 6/10/2015 Bedrock PVC 2 1177998.47 545161.83 742.70 740.83 142.1 90.6 613.83 122.0 127.0 618.83 613.83 Date Unknown AS-7BRA CAMA 4/6/2017 Bedrock PVC 2 1177993.67 545197.73 737.25 734.36 130.5 --604.37 120.0 130.0 614.37 604.37 -- AS-7D CAMA 5/30/2015 Deep PVC 2 1178002.80 545161.95 742.90 741.04 92.5 62.5 653.54 82.5 87.5 658.54 653.54 -- AS-7S CAMA 6/10/2015 Ash Pore Water PVC 2 1177993.46 545162.39 742.06 740.61 43.8 --697.11 28.5 43.5 712.11 697.11 -- AS-8D CAMA 11/1/2017 Deep PVC 2 1178008.05 545336.86 724.95 725.04 67.9 55.0 657.14 62.9 67.9 662.14 657.14 -- AS-8S CAMA 10/19/2017 Shallow PVC 2 1178001.60 545337.36 724.79 725.09 ----687.09 23.0 38.0 702.09 687.09 -- BG-1BR CAMA 3/18/2015 Bedrock PVC 2 1177169.46 541369.47 802.50 800.83 110.4 --703.92 92.0 97.0 708.83 703.83 4/12/2017 BG-1BRA CAMA 4/10/2017 Bedrock PVC 2 1177209.47 541354.77 806.00 802.84 99.0 --704.84 93.0 98.0 709.84 704.84 -- BG-1D CAMA 3/11/2015 Deep PVC 2 1177162.64 541371.23 802.63 800.91 77.0 62.0 729.47 66.5 71.5 734.41 729.41 -- BG-1S CAMA 3/18/2015 Shallow PVC 2 1177156.06 541373.37 802.67 800.83 35.0 --765.82 20.0 35.0 780.82 765.82 -- BG-2D CAMA 3/16/2005 Deep PVC 2 1171516.98 543463.45 846.51 844.65 62.5 --790.65 49.0 54.0 795.65 790.65 -- CCPMW-1D CAMA/Landfill 2/24/2010 Bedrock PVC 2 1171401.96 541739.18 875.89 873.33 54.0 46.0 819.19 49.0 54.0 824.33 819.33 -- CCPMW-1S CAMA/Landfill 2/23/2010 Shallow PVC 2 1171400.29 541735.11 875.58 873.24 40.0 --833.34 30.0 40.0 843.24 833.24 -- CCPMW-2D Landfill 2/24/2010 Deep PVC 2 1171840.95 540576.04 842.38 840.17 70.0 70.0 769.91 65.0 70.0 775.17 770.17 -- CCPMW-2S Landfill 2/24/2010 Shallow PVC 2 1171837.02 540575.60 842.24 840.26 42.0 --798.17 32.0 42.0 808.26 798.26 -- CCPMW-3D Landfill 7/16/2017 Deep PVC 2 1172353.50 540509.40 811.74 810.47 31.0 --776.55 26.0 31.0 784.47 779.47 -- CCPMW-3S Landfill 6/27/20017 Shallow PVC 2 1172347.95 540509.78 811.56 810.56 14.0 --796.54 9.0 14.0 801.56 796.56 -- CCPMW-4 Landfill 10/26/2015 Bedrock PVC 2 1171270.61 542549.85 845.95 843.29 65.0 --777.62 50.0 65.0 793.29 778.29 -- CCPMW-5 Landfill 10/23/2015 Bedrock PVC 2 1171866.91 542895.88 858.63 855.87 72.5 --783.23 62.5 72.5 793.37 783.37 -- CCPMW-6D Landfill 10/26/2015 Bedrock PVC 2 1172376.27 542418.47 854.35 851.45 60.0 --791.27 50.0 60.0 801.45 791.45 -- CCPMW-6S Landfill 10/21/2015 Shallow PVC 2 1172372.00 542422.85 854.38 851.48 43.5 --807.65 33.5 43.5 817.98 807.98 -- Screened Interval2 (Feet-BGS) TABLE 2-1 WELL CONSTRUCTION DATA CLIFFSIDE STEAM STATION DUKE ENERGY CAROLINAS, MOORESBORO, NC P:\Duke Energy Carolinas\21. CLIFFSIDE\CSA Update\Tables\Table 2-1 Well Construction Page 2 of 5 ID Program Date Installed Flow Layer Material Diameter (Inches) Easting (Feet) Northing (Feet) Measuring Point TOC Elevation (Feet-NAVD 88) Ground Surface Elevation (Feet-NAVD 88) Boring Depth1, 2 (Feet-BGS) Surface Casing Depth2 (Feet-BGS) Total Well Depth (Feet-BGS) Top of Screen Elevation (Feet-NAVD 88) Bottom of Screen Elevation (Feet-NAVD 88) Date Well Abandoned Screened Interval2 (Feet-BGS) CCPTW-1D Landfill 7/18/2007 Deep PVC 2 1172408.22 541138.87 838.53 836.41 66.0 --770.30 61.0 66.0 775.41 770.41 -- CCPTW-1S Landfill 2/25/2010 Shallow PVC 2 1172409.56 541143.89 838.92 836.81 35.0 --802.14 25.0 35.0 811.81 801.81 -- CCPTW-2 Landfill 2/25/2010 Shallow PVC 2 1172528.53 540669.85 842.18 839.62 45.0 --794.55 35.0 45.0 804.62 794.62 -- CCR-3BR CCR 5/20/2016 Bedrock PVC 2 1179107.50 545368.13 763.00 760.03 57.0 --615.69 51.5 56.5 708.53 703.53 -- CCR-4D CCR 5/14/2016 Deep PVC 2 1179171.57 544901.23 781.43 778.25 25.5 --756.12 17.5 22.5 760.75 755.75 -- CCR-5D CCR 5/14/2016 Deep PVC 2 1178923.15 544761.61 784.10 782.36 35.5 --748.75 29.5 34.5 752.86 747.86 -- CCR-6D CCR 5/23/2016 Deep PVC 2 1178459.79 544535.15 793.86 790.79 64.0 --727.21 58.5 63.5 732.29 727.29 -- CCR-6S CCR 5/24/2016 Shallow PVC 2 1178456.08 544534.11 793.69 790.67 45.0 --750.34 29.0 44.0 761.67 746.67 -- CCR-7D CAMA/CCR 6/1/2016 Deep PVC 2 1178088.48 544548.64 790.40 787.49 91.0 --696.22 86.0 91.0 701.49 696.49 -- CCR-7S CAMA/CCR 6/2/2016 Shallow PVC 2 1178100.39 544550.58 790.54 787.75 50.0 --738.30 34.5 49.5 753.25 738.25 -- CCR-8D CCR 6/1/2016 Deep PVC 2 1177702.66 544225.45 798.99 796.21 50.0 --746.13 44.5 49.5 751.71 746.71 -- CCR-9D CCR 5/14/2016 Deep PVC 2 1177112.31 544533.43 752.89 749.94 27.5 --722.19 22.5 27.5 727.44 722.44 -- CCR-11D CCR 6/3/2016 Deep PVC 2 1176928.56 544160.46 736.83 733.74 30.0 --704.40 24.5 29.5 709.24 704.24 -- CCR-11S CCR 5/10/2016 Shallow PVC 2 1176927.96 544152.71 737.07 733.93 20.0 --714.27 4.5 20.0 729.43 713.93 -- CCR-12D CAMA/CCR 5/21/2016 Deep PVC 2 1177095.49 543966.92 770.10 767.51 64.0 --702.61 59.0 64.0 708.51 703.51 -- CCR-12S CAMA/CCR 5/13/2016 Shallow PVC 2 1177098.72 543972.65 770.82 767.80 48.0 --719.57 33.0 48.0 734.80 719.80 -- CCR-13D CAMA/CCR 5/15/2016 Deep PVC 2 1177428.57 543741.79 787.75 784.89 36.0 --752.37 27.0 32.0 757.89 752.89 -- CCR-14D CCR 5/4/2016 Deep PVC 2 1177762.27 543447.60 805.14 801.99 54.0 --749.70 47.0 52.0 754.99 749.99 -- CCR-15D CCR 5/26/2016 Deep PVC 2 1178059.05 542952.96 780.40 778.22 22.5 --758.56 15.0 20.0 763.22 758.22 -- CCR-16D CCR 6/2/2016 Deep PVC 2 1177959.94 542587.17 780.13 780.44 71.5 --711.90 63.0 68.0 717.44 712.44 -- CCR-16S CCR 5/13/2016 Shallow PVC 2 1177964.04 542594.24 780.00 780.44 34.0 --747.48 18.0 33.0 762.44 747.44 -- CCR-CCP-1D CCR 5/31/2016 Bedrock PVC 2 1171188.43 540478.61 878.84 874.92 62.0 --815.59 55.0 60.0 819.92 814.92 -- CCR-CCP-2D CCR 5/26/2016 Deep PVC 2 1171437.12 540663.08 870.51 867.37 56.0 --810.20 51.0 56.0 816.37 811.37 -- CCR-CCP-3D CCR 6/1/2016 Deep PVC 2 1171723.56 540772.43 862.53 859.53 78.0 --781.15 72.8 77.8 786.73 781.73 -- CCR-CCP-3DA CCR 2/23/2017 Bedrock PVC 2 1171758.46 540782.80 858.41 858.41 70.6 --786.03 64.6 69.6 793.81 788.81 -- CCR-CCP-3S CCR 5/21/2016 Shallow PVC 2 1171730.51 540773.99 862.17 859.23 65.0 --795.01 50.0 65.0 809.23 794.23 -- CCR-CCP-4D CCR 6/3/2016 Deep PVC 2 1172032.08 540752.80 855.36 852.53 60.0 --793.88 53.0 58.0 799.53 794.53 -- CCR-CCP-5D CCR 6/2/2016 Deep PVC 2 1172315.71 540776.52 847.09 844.01 76.0 --768.51 70.0 75.0 774.01 769.01 -- CCR-CCP-5S CCR 5/23/2016 Shallow PVC 2 1172320.93 540774.75 847.46 844.18 65.0 --779.88 49.0 64.0 795.18 780.18 -- CCR-CCP-6D CCR 5/26/2016 Deep PVC 2 1172342.13 541070.37 834.50 834.79 100.0 --739.09 90.0 95.0 744.79 739.79 -- CCR-CCP-6S CCR 5/24/2016 Shallow PVC 2 1172343.46 541062.39 834.19 834.63 65.0 --773.68 45.0 60.0 789.63 774.63 -- CCR-CCP-7D CCR 5/19/2016 Deep PVC 2 1172308.91 541367.68 841.56 842.02 39.0 --808.53 23.0 33.0 819.02 809.02 -- CCR-CCP-8D CCR 5/23/2016 Deep PVC 2 1172334.99 541606.81 845.48 845.82 27.0 --819.08 17.0 27.0 828.82 818.82 -- CCR-CCP-9D CCR 5/26/2016 Bedrock PVC 2 1172489.72 541858.90 842.30 838.99 70.0 --772.37 61.8 66.8 777.19 772.19 -- CCR-CCP-9S CCR 5/26/2016 Shallow PVC 2 1172496.03 541855.78 841.97 838.78 49.8 --790.88 30.3 45.3 808.48 793.48 -- CCR-CCP-10D CCR 5/25/2016 Bedrock PVC 2 1172707.91 542159.40 853.67 850.42 75.5 62.5 781.07 65.0 70.0 785.42 780.42 -- CCR-CCP-10DA CCR 2/21/2017 Bedrock PVC 2 1172616.73 542168.33 853.09 849.89 75.0 59.6 778.12 66.7 71.7 783.19 778.19 -- CCR-CCP-10S CCR 5/26/2016 Shallow PVC 2 1172701.89 542162.96 853.67 850.45 50.8 --805.17 30.2 45.2 820.25 805.25 -- CCR-CCP-11BR CCR 6/6/2016 Bedrock PVC 2 1172295.26 542409.18 862.61 862.99 81.0 47.0 788.01 71.0 76.0 791.99 786.99 -- CCR-CCP-12D CCR 5/24/2016 Deep PVC 2 1172133.72 542638.17 859.70 859.93 80.0 65.0 786.42 68.0 73.0 791.93 786.93 -- CCR-CCP-12S CCR 5/25/2016 Shallow PVC 2 1172128.12 542645.70 859.59 859.97 63.0 --807.57 37.0 52.0 822.97 807.97 -- CCR-CCP-13D CCR 5/23/2016 Deep PVC 2 1171847.96 542803.68 857.00 853.99 42.0 --815.53 33.0 38.0 820.99 815.99 -- CCR-CCP-14D CCR 5/21/2016 Deep PVC 2 1171503.62 542798.21 859.86 856.31 53.0 38.0 811.18 39.0 44.0 817.31 812.31 -- CCR-CCP-15D CCR 5/24/2016 Bedrock PVC 2 1171470.59 542490.82 880.12 880.46 82.0 --810.00 66.1 71.1 814.36 809.36 -- CCR-CCP-15S CCR 5/24/2016 Shallow PVC 2 1171471.40 542497.98 880.10 880.36 54.8 --828.41 44.0 54.0 836.36 826.36 -- CCR-IB-1D CAMA/CCR 5/24/2016 Deep PVC 2 1177297.62 545789.61 668.76 668.98 26.0 --643.62 20.0 25.0 648.98 643.98 -- CCR-IB-1S CAMA/CCR 5/14/2016 Shallow PVC 2 1177292.05 545793.61 668.91 669.09 16.0 --653.22 6.0 16.0 663.09 653.09 -- CCR-IB-3D CAMA/CCR 5/24/2016 Deep PVC 2 1176549.90 546343.78 678.92 679.14 43.0 --635.67 38.0 43.0 641.14 636.14 -- CCR-IB-3S CAMA/CCR 4/29/2016 Shallow PVC 2 1176555.35 546341.29 678.74 678.89 30.0 --651.63 12.0 27.0 666.89 651.89 -- CCR-U5-1D CCR 5/20/2016 Deep PVC 2 1172082.85 544697.04 782.01 778.34 56.0 --732.58 41.0 46.0 737.34 732.34 -- CCR-U5-2D CCR 5/21/2016 Deep PVC 2 1172437.03 545208.18 775.22 771.51 66.0 --705.40 60.5 65.5 711.01 706.01 -- CCR-U5-3D CCR 5/24/2016 Deep PVC 2 1173011.86 545207.27 694.88 691.80 27.5 --665.63 22.0 27.0 669.80 664.80 -- CCR-U5-3S CCR 5/16/2016 Shallow PVC 2 1173001.51 545196.63 695.90 694.14 17.0 --676.91 7.0 17.0 687.14 677.14 -- CCR-U5-4D CAMA/CCR 5/22/2016 Deep PVC 2 1173439.22 545258.55 699.62 695.01 42.0 --659.07 31.0 36.0 664.01 659.01 -- CCR-U5-4S CAMA/CCR 5/18/2016 Shallow PVC 2 1173431.54 545259.59 698.27 694.91 25.0 --669.92 10.0 25.0 684.91 669.91 -- CCR-U5-5D CCR 5/21/2016 Deep PVC 2 1173873.23 545193.76 768.89 765.68 72.0 --693.49 66.0 71.0 699.68 694.68 -- CCR-U5-6DA CCR 6/2/2016 Deep PVC 2 1174228.20 544988.71 719.04 717.11 24.5 --692.59 19.5 24.5 697.61 692.61 -- CCR-U5-6S CCR 5/16/2016 Shallow PVC 2 1174233.24 545002.37 717.69 714.92 19.0 --698.29 6.0 16.0 708.92 698.92 -- CCR-U5-8D CCR 5/23/2016 Deep PVC 2 1174329.25 544032.01 759.63 757.31 67.0 --695.73 58.5 62.5 698.81 694.81 -- CCR-U5-8S CCR 5/16/2016 Shallow PVC 2 1174332.93 544016.33 760.48 757.61 26.0 --730.96 11.0 26.0 746.61 731.61 -- CCR-U5-9S CCR 5/25/2016 Shallow PVC 2 1174509.03 543695.36 763.11 760.10 21.0 --739.08 6.0 21.0 754.08 739.08 -- CCR-U5-10D CCR 5/18/2016 Deep PVC 2 1174871.95 543349.93 785.63 782.61 42.0 --740.25 36.0 41.0 746.61 741.61 -- CCR-U5-10S CCR 5/23/2016 Shallow PVC 2 1174875.32 543347.33 784.93 782.86 29.5 --753.83 18.0 28.0 764.86 754.86 -- CLMW-1 CAMA/Voluntary 9/7/1995 Shallow PVC 2 1178001.00 544506.00 789.08 785.78 58.0 --728.28 47.5 57.5 738.28 728.28 -- CLMW-2 CAMA/Voluntary 9/6/1995 Shallow PVC 2 1177765.00 545343.00 728.92 726.84 53.0 --673.84 43.0 53.0 683.84 673.84 -- CLMW-3D CAMA/Voluntary 10/20/1995 Shallow PVC 2 1177685.00 544860.00 774.92 772.47 103.0 --669.47 93.0 103.0 679.47 669.47 -- TABLE 2-1 WELL CONSTRUCTION DATA CLIFFSIDE STEAM STATION DUKE ENERGY CAROLINAS, MOORESBORO, NC P:\Duke Energy Carolinas\21. CLIFFSIDE\CSA Update\Tables\Table 2-1 Well Construction Page 3 of 5 ID Program Date Installed Flow Layer Material Diameter (Inches) Easting (Feet) Northing (Feet) Measuring Point TOC Elevation (Feet-NAVD 88) Ground Surface Elevation (Feet-NAVD 88) Boring Depth1, 2 (Feet-BGS) Surface Casing Depth2 (Feet-BGS) Total Well Depth (Feet-BGS) Top of Screen Elevation (Feet-NAVD 88) Bottom of Screen Elevation (Feet-NAVD 88) Date Well Abandoned Screened Interval2 (Feet-BGS) CLMW-3S CAMA/Voluntary 10/23/1995 Shallow PVC 2 1177695.00 544870.00 775.07 772.62 59.0 --713.62 49.0 59.0 723.62 713.62 -- CLMW-4 CAMA/Voluntary 10/24/1995 Shallow PVC 2 1179262.00 545724.00 670.58 667.90 15.5 --652.90 5.0 15.0 662.90 652.90 12/9/2015 CLMW-5S CAMA/Voluntary 10/23/1995 Shallow PVC 2 1179406.00 545326.00 773.78 773.97 60.0 --713.97 50.0 60.0 723.97 713.97 -- CLMW-5D CAMA/Voluntary 10/23/1995 Shallow PVC 2 1179317.85 545266.66 775.39 775.39 115.0 --660.39 94.0 104.0 681.39 671.39 -- CLMW-6 CAMA/Voluntary 10/25/1995 Shallow PVC 2 1178181.00 542145.00 770.86 768.41 33.1 --735.27 20.0 30.0 748.41 738.41 -- CLP-1 CAMA 10/17/1995 --PVC 2 1178179.10 545334.89 730.78 725.90 35.0 --690.90 25.0 35.0 700.90 690.90 -- CLP-2 CAMA 10/18/1995 --PVC 2 1179383.34 545783.09 672.66 670.39 18.0 --652.39 8.0 18.0 662.39 652.39 -- CLP-3 CAMA 10/18/1995 --PVC 2 1179024.38 544769.40 789.33 783.91 40.4 --743.91 30.0 40.0 753.91 743.91 -- CLP-4 CAMA 10/20/1995 --PVC 2 1178463.08 544542.79 794.45 791.81 75.0 --718.81 33.0 73.0 758.81 718.81 -- GWA-1BRU CAMA 5/22/2015 Deep PVC 2 1171772.81 544172.39 781.29 779.46 28.9 9.0 751.66 22.8 27.8 756.66 751.66 -- GWA-2BR CAMA --Bedrock PVC 2 1173062.50 545310.90 685.43 682.41 ---------------- GWA-2BRU CAMA 5/4/2015 Deep PVC 2 1173057.26 545297.33 685.35 683.26 43.4 --645.86 32.4 37.4 650.86 645.86 -- GWA-2S CAMA 4/29/2015 Shallow PVC 2 1173057.42 545302.41 685.56 683.62 22.0 26.0 662.62 6.0 21.0 677.62 662.62 -- GWA-3D CAMA 4/27/2015 Deep PVC 2 1173872.82 545307.36 757.53 755.66 70.5 52.0 688.87 62.0 67.0 693.66 688.66 -- GWA-4D CAMA 4/27/2015 Deep PVC 2 1174248.31 545086.73 711.64 709.84 42.5 27.0 672.84 32.0 37.0 677.84 672.84 -- GWA-4S CAMA 4/23/2015 Shallow PVC 2 1174247.23 545093.95 711.61 709.83 21.0 --689.83 5.0 20.0 704.83 689.83 -- GWA-5BRU CAMA 3/4/2015 Deep PVC 2 1174616.21 543860.81 776.73 774.79 45.7 30.7 729.69 40.0 45.0 734.79 729.79 -- GWA-5S CAMA 3/6/2015 Shallow PVC 2 1174613.96 543865.77 777.01 775.01 29.5 --745.97 14.0 29.0 760.97 745.97 -- GWA-6D CAMA 5/11/2015 Deep PVC 2 1173153.06 543999.47 809.97 808.30 60.5 39.5 761.30 42.0 47.0 766.30 761.30 -- GWA-6S CAMA 5/8/2015 Shallow PVC 2 1173149.13 544008.58 810.00 808.33 41.0 --767.33 31.0 41.0 777.33 767.33 -- GWA-10D CAMA 4/27/2015 Deep PVC 2 1176427.09 546338.87 679.74 680.04 61.2 --627.57 47.6 52.6 632.44 627.44 -- GWA-10S CAMA 4/23/2015 Shallow PVC 2 1176416.53 546329.99 679.55 679.85 29.0 --652.98 12.0 27.0 667.85 652.85 -- GWA-11BRU CAMA 3/1/2015 Deep PVC 2 1176972.33 546031.16 674.99 675.20 45.1 28.7 633.42 37.0 42.0 638.20 633.20 -- GWA-11S CAMA 5/29/2015 Shallow PVC 2 1176967.86 546035.96 674.98 675.24 28.5 --648.46 12.0 27.0 663.24 648.24 -- GWA-12BRU CAMA 4/2/2015 Deep PVC 2 1177265.70 545469.36 719.66 717.90 59.9 45.0 664.90 48.0 53.0 669.90 664.90 -- GWA-12S CAMA 4/1/2015 Shallow PVC 2 1177268.05 545473.23 719.40 717.54 35.0 --683.54 19.0 34.0 698.54 683.54 -- GWA-13BR CAMA 3/5/2015 Bedrock PVC 2 1176624.21 545131.60 724.12 724.38 86.5 19.5 638.88 80.5 85.5 643.88 638.88 -- GWA-14BR CAMA 9/27/2016 Bedrock PVC 2 1176399.33 545436.12 712.55 712.41 133.3 --676.41 118.5 128.5 593.91 583.91 -- GWA-14D CAMA 3/20/2015 Deep PVC 2 1176393.21 545444.81 712.52 712.85 61.6 45.9 659.85 48.0 53.0 664.85 659.85 -- GWA-14S CAMA 3/18/2015 Shallow PVC 2 1176397.91 545438.58 712.41 712.71 38.0 --676.41 21.3 36.3 691.41 676.41 -- GWA-20BR CAMA 9/30/2016 Bedrock PVC 2 1177018.30 544377.64 736.61 734.26 123.0 --675.26 54.0 59.0 680.26 675.26 -- GWA-20D CAMA 4/30/2015 Deep PVC 2 1177009.95 544359.26 736.24 734.31 38.5 21.2 704.59 25.0 30.0 709.31 704.31 -- GWA-20S CAMA 4/28/2015 Shallow PVC 2 1177012.53 544365.78 736.13 734.18 19.5 --715.00 4.5 19.5 729.68 714.68 -- GWA-21BR CAMA 5/20/2015 Bedrock PVC 2 1179245.36 545690.80 672.98 670.86 68.0 16.6 604.89 60.6 65.6 610.26 605.26 -- GWA-21BRU CAMA 5/16/2015 Deep PVC 2 1179247.30 545685.65 672.91 670.72 32.0 15.5 645.90 20.0 25.0 650.72 645.72 -- GWA-21S CAMA 5/29/2015 Shallow PVC 2 1179239.27 545686.38 673.32 671.37 15.8 --656.28 5.5 15.5 665.87 655.87 -- GWA-22BRU CAMA 4/29/2015 Deep PVC 2 1180003.09 545851.22 665.19 663.26 ----641.26 17.0 22.0 646.26 641.26 -- GWA-22S CAMA 5/4/2015 Shallow PVC 2 1179998.61 545851.42 665.19 663.28 13.0 --650.66 2.6 12.6 660.66 650.66 -- GWA-23D CAMA 5/9/2015 Deep PVC 2 1180105.67 544500.42 786.80 785.16 30.4 --756.68 23.5 28.5 761.68 756.68 -- GWA-24BR CAMA 3/10/2016 Bedrock PVC 2 1179590.64 543396.12 798.92 795.94 72.0 --725.95 65.0 70.0 730.95 725.95 -- GWA-24D CAMA 6/5/2015 Deep PVC 2 1179608.58 543416.75 794.94 793.02 40.4 25.8 760.21 28.0 33.0 765.02 760.02 -- GWA-24S CAMA 6/5/2015 Shallow PVC 2 1179599.95 543416.96 794.47 792.52 24.5 --768.65 14.0 24.0 778.52 768.52 -- GWA-25D CAMA 5/16/2015 Deep PVC 2 1178142.16 541834.97 792.01 789.99 49.5 34.5 748.49 36.5 41.5 753.49 748.49 -- GWA-25S CAMA 5/13/2015 Shallow PVC 2 1178137.47 541839.06 791.81 789.64 26.0 --764.64 10.0 25.0 779.64 764.64 -- GWA-26D CAMA 5/16/2015 Deep PVC 2 1177888.15 542464.26 782.98 781.18 86.0 53.6 707.38 68.6 73.8 712.58 707.38 -- GWA-26S CAMA 5/13/2015 Shallow PVC 2 1177879.86 542467.12 783.36 781.43 26.5 --756.23 10.2 25.2 771.23 756.23 -- GWA-27BR CAMA 9/21/2016 Bedrock PVC 2 1177728.81 543385.82 805.50 803.11 113.0 --694.21 103.9 108.9 699.21 694.21 -- GWA-27DA CAMA 6/9/2015 Deep PVC 2 1174338.80 544554.10 805.48 803.00 61.0 --747.00 51.0 56.0 752.00 747.00 -- GWA-28BR CAMA 4/30/2015 Bedrock PVC 2 1178962.45 545417.94 757.90 755.94 100.6 50.6 665.92 85.0 90.0 670.94 665.94 -- GWA-28BRU CAMA 4/2/2015 Deep PVC 2 1178963.41 545412.27 758.35 756.43 60.9 45.9 697.46 53.9 58.9 702.53 697.53 -- GWA-28S CAMA 4/8/2015 Shallow PVC 2 1178968.54 545417.20 757.74 755.92 38.5 --718.45 22.5 37.5 733.45 718.45 -- GWA-29BR CAMA 5/18/2015 Bedrock PVC 2 1177541.87 545660.02 679.38 677.57 67.8 14.7 632.81 40.0 45.0 637.57 632.57 4/12/2017 GWA-29BRA CAMA 4/11/2017 Bedrock PVC 2 1177555.32 545659.90 679.76 676.94 77.3 --618.54 48.4 58.4 628.54 618.54 -- GWA-29D CAMA 5/11/2015 Deep PVC 2 1177536.39 545661.19 679.56 677.76 28.6 13.3 652.33 20.5 25.5 657.26 652.26 -- GWA-30BR CAMA 5/20/2015 Bedrock PVC 2 1173642.64 542781.71 806.90 805.01 80.5 30.2 735.01 65.0 70.0 740.01 735.01 -- GWA-30BRU CAMA --Deep PVC 2 1173643.86 542776.60 806.72 804.88 ----761.88 38.0 43.0 766.88 761.88 -- GWA-30S CAMA 5/15/2015 Shallow PVC 2 1173642.62 542786.16 806.89 804.91 27.5 --761.91 17.5 27.5 787.41 777.41 -- GWA-31BR CAMA 5/15/2015 Bedrock PVC 2 1174353.57 544586.56 755.04 753.00 66.1 16.3 701.94 45.9 50.9 707.10 702.10 Date Unknown GWA-31BRA CAMA 3/23/2016 Bedrock PVC 2 1174368.22 544600.62 757.13 753.66 127.0 --627.16 116.5 126.5 637.16 627.16 -- GWA-31D CAMA 4/24/2015 Deep PVC 2 1174359.77 544590.13 754.89 752.94 21.8 6.5 737.59 10.4 15.4 742.59 737.59 -- GWA-32BR CAMA 6/5/2015 Bedrock PVC 2 1175046.67 546973.12 698.56 696.58 95.3 45.0 631.58 60.0 65.0 636.58 631.58 -- GWA-32D CAMA 5/30/2015 Deep PVC 2 1175043.33 546972.81 698.53 696.62 45.7 4.1 656.67 35.0 40.0 661.67 656.67 -- GWA-33BR CAMA 5/12/2015 Bedrock PVC 2 1176568.66 544548.03 722.94 720.82 93.1 43.0 630.82 85.0 90.0 635.82 630.82 -- GWA-33D CAMA 5/9/2015 Deep PVC 2 1176568.78 544542.77 722.88 720.81 33.0 --689.81 26.0 31.0 694.81 689.81 -- GWA-33S CAMA 5/8/2015 Shallow PVC 2 1176568.35 544553.92 722.71 720.75 16.5 --705.75 5.0 15.0 715.75 705.75 -- TABLE 2-1 WELL CONSTRUCTION DATA CLIFFSIDE STEAM STATION DUKE ENERGY CAROLINAS, MOORESBORO, NC P:\Duke Energy Carolinas\21. CLIFFSIDE\CSA Update\Tables\Table 2-1 Well Construction Page 4 of 5 ID Program Date Installed Flow Layer Material Diameter (Inches) Easting (Feet) Northing (Feet) Measuring Point TOC Elevation (Feet-NAVD 88) Ground Surface Elevation (Feet-NAVD 88) Boring Depth1, 2 (Feet-BGS) Surface Casing Depth2 (Feet-BGS) Total Well Depth (Feet-BGS) Top of Screen Elevation (Feet-NAVD 88) Bottom of Screen Elevation (Feet-NAVD 88) Date Well Abandoned Screened Interval2 (Feet-BGS) GWA-34S CAMA 3/22/2016 Shallow PVC 2 1171545.44 545058.04 715.88 712.55 30.0 --683.25 14.3 29.3 698.25 683.25 -- GWA-35D CAMA 3/31/2016 Deep PVC 2 1172891.97 545450.05 697.74 695.25 69.0 49.0 628.25 62.0 67.0 633.25 628.25 -- GWA-35S CAMA 4/7/2016 Shallow PVC 2 1172882.81 545443.02 698.04 695.69 38.0 --660.69 20.0 35.0 675.69 660.69 -- GWA-36D CAMA 2/16/2016 Deep PVC 2 1174228.18 545365.46 710.53 707.52 96.0 80.0 619.52 83.0 88.0 624.52 619.52 -- GWA-36S CAMA 2/17/2016 Shallow PVC 2 1174231.06 545361.74 710.53 707.80 22.0 --685.80 7.0 22.0 700.80 685.80 -- GWA-37D CAMA 3/7/2016 Deep PVC 2 1174065.36 545741.36 710.47 707.68 102.0 86.0 607.67 95.0 100.0 612.67 607.67 -- GWA-37S CAMA 3/8/2016 Shallow PVC 2 1174059.49 545745.17 710.56 707.59 55.0 --652.59 40.0 55.0 667.59 652.59 -- GWA-38D CAMA --Deep PVC 2 1176204.21 545295.90 760.01 757.28 65.0 47.0 699.28 53.0 58.0 704.28 699.28 -- GWA-38S CAMA 2/17/2016 Shallow PVC 2 1176204.41 545303.18 760.01 757.04 50.0 --706.85 35.0 50.0 722.04 707.04 -- GWA-39S CAMA 4/8/2016 Shallow PVC 1 1176960.10 544433.87 723.41 720.17 5.0 --715.17 3.0 5.0 717.17 715.17 -- GWA-40S CAMA 4/8/2016 Shallow PVC 1 1176893.40 544290.09 723.09 720.07 7.5 --713.07 4.0 7.0 716.07 713.07 -- GWA-42S CAMA 4/1/2016 Shallow PVC 1 1176795.55 544318.30 724.65 721.94 9.0 --712.94 4.0 9.0 717.94 712.94 -- GWA-43D CAMA 3/29/2016 Deep PVC 2 1176622.32 544428.69 725.10 722.35 49.5 --674.85 42.5 47.5 679.85 674.85 -- GWA-43S CAMA 3/30/2016 Shallow PVC 2 1176616.35 544428.85 725.19 722.49 22.0 --701.49 6.0 21.0 716.49 701.49 -- GWA-44BR CAMA 2/11/2016 Bedrock PVC 2 1176085.01 544232.45 769.03 765.95 131.0 81.0 666.86 94.1 99.1 671.86 666.86 -- GWA-44D CAMA 2/12/2016 Deep PVC 2 1176084.81 544225.17 769.07 766.03 77.0 55.7 691.02 70.0 75.0 696.02 691.02 -- GWA-44S CAMA 2/11/2016 Shallow PVC 2 1176085.11 544236.09 768.88 766.15 52.0 --715.15 36.0 51.0 730.15 715.15 -- GWA-45D CAMA 2/12/2016 Deep PVC 2 1175816.16 543267.82 816.59 813.52 90.0 66.0 761.51 84.0 89.0 729.52 724.52 -- GWA-45S CAMA 2/11/2016 Shallow PVC 2 1175816.06 543264.18 816.55 813.67 56.0 --758.18 45.5 55.5 768.17 758.18 -- GWA-46D CAMA 2/29/2016 Deep PVC 2 1177341.80 542651.40 788.60 785.55 30.0 --762.55 18.0 23.0 767.55 762.55 -- GWA-47D CAMA 2/29/2016 Deep PVC 2 1177735.90 542672.00 805.18 802.53 60.0 33.0 747.53 50.0 55.0 752.53 747.53 -- GWA-48BR CAMA 3/11/2016 Bedrock PVC 2 1179539.18 543048.02 808.89 805.54 111.0 --718.53 82.0 87.0 723.53 718.53 -- GWA-51D CAMA 11/3/2017 Deep PVC 2 1177393.71 544562.65 792.99 790.20 --46.0 729.70 55.5 60.5 734.7 729.7 -- GWA-54BRO CAMA 11/1/2017 Bedrock ----1177580.25 54087.34 764.65 761.85 ----586.85 112.0 175.0 649.85 586.85 -- GWA-54D CAMA 10/30/2017 Deep PVC 2 1177583.45 545082.33 765.03 762.31 --97.0 650.31 107.0 112.0 655.31 650.31 -- GWA-54S CAMA 11/3/2017 Shallow PVC 2 1177581.82 545098.83 763.76 760.81 ----708.81 37.0 52.0 723.81 708.81 -- GWA-56D CAMA 11/8/2017 Deep PVC 2 1174475.75 545794.47 708.70 708.80 --57.0 636.80 67.0 72.0 641.80 636.80 -- GWA-56S CAMA 11/8/2017 Shallow PVC 2 1174480.67 545784.15 708.58 708.82 ----668.82 25.0 40.0 683.82 668.82 -- IB-1D CAMA 4/20/2015 Deep PVC 2 1176417.80 546207.74 700.72 698.84 106.3 --598.84 95.0 100.0 603.84 598.84 Date Unknown IB-1S CAMA 4/16/2015 Ash Pore Water PVC 2 1176407.27 546195.14 700.74 698.87 44.0 --655.87 28.0 43.0 670.87 655.87 Date Unknown IB-2AL CAMA 3/30/2015 Shallow PVC 2 1176632.62 545888.70 697.55 695.58 51.0 --646.78 38.8 48.8 656.78 646.78 9/23/2015 IB-2BRU CAMA 4/2/2015 Deep PVC 2 1176636.10 545875.38 697.67 695.68 103.6 88.0 593.68 97.0 102.0 598.68 593.68 9/23/2015 IB-2I CAMA 5/6/2015 Shallow PVC 2 1176644.01 545863.40 697.22 695.56 81.5 --616.56 69.0 79.0 626.56 616.56 9/23/2015 IB-2S-SL CAMA 3/25/2015 Ash Pore Water PVC 2 1176622.28 545912.14 697.73 695.67 43.0 --658.67 22.0 37.0 673.67 658.67 9/23/2015 IB-3D CAMA 6/2/2015 Deep PVC 2 1177130.04 545819.44 704.08 704.31 70.0 56.0 638.31 61.0 66.0 643.31 638.31 Date Unknown IB-3S CAMA 5/22/2015 Shallow PVC 2 1177126.70 545822.90 704.15 704.33 42.5 --663.33 26.0 41.0 678.33 663.33 Date Unknown IB-4BR CAMA 4/25/2015 Bedrock PVC 2 1176894.55 545507.67 701.93 698.49 105.6 55.0 624.19 69.3 74.3 629.19 624.19 9/23/2015 IB-4D CAMA 3/25/2015 Deep PVC 2 1176913.89 545503.10 700.38 698.44 58.5 --646.44 47.0 52.0 651.44 646.44 9/23/2015 IB-4S-SL CAMA 3/24/2015 Ash Pore Water PVC 2 1176907.15 545504.39 700.34 698.30 34.0 --673.30 10.0 25.0 688.30 673.30 9/23/2015 MW-2D Voluntary 12/21/2007 Deep PVC 2 1177764.00 545337.00 --727.53 76.0 --727.53 71.0 76.0 656.53 651.53 Date Unknown MW-2DA Voluntary 12/14/2010 Bedrock PVC 2 1177757.00 545334.70 730.62 727.45 79.7 --651.45 71.0 76.0 656.45 651.45 -- MW-4D Voluntary 12/20/2007 Deep PVC 2 1179246.00 545716.00 672.12 669.91 26.3 --643.66 21.3 26.3 648.66 643.66 12/9/2015 MW-7D --12/22/2007 Deep PVC 2 1177747.98 543371.41 807.35 804.11 38.8 --763.08 33.5 38.5 770.61 765.61 -- MW-8D Voluntary 12/22/2007 Deep PVC 2 1176988.00 544314.00 736.64 734.11 35.0 --699.11 29.8 34.8 704.36 699.36 -- MW-8S Voluntary 12/7/2005 Shallow PVC 2 1176983.00 544313.00 736.27 733.78 18.0 --715.88 2.9 17.9 730.88 715.88 -- MW-10D Voluntary 12/19/2007 Deep PVC 2 1179010.00 544812.00 785.50 783.40 39.0 --744.40 32.8 37.8 750.65 745.65 -- MW-10S Voluntary 11/30/2005 Shallow PVC 2 1179004.00 544816.00 785.81 783.40 35.0 --748.70 19.7 34.7 763.70 748.70 -- MW-11BRO CAMA 10/31/2017 Bedrock PVC 2 1179830.86 545438.36 764.96 762.26 --55.0 587.26 ---------- MW-11D Voluntary 12/20/2007 Deep PVC 2 1179823.00 545432.00 763.67 761.45 43.2 --718.45 37.9 42.9 723.55 718.55 -- MW-11DA CAMA 10/25/2017 Deep PVC 2 1179837.15 545440.62 765.02 762.43 ----712.43 45.0 50.0 717.43 712.43 -- MW-11S Voluntary 12/2/2005 Shallow PVC 2 1179829.00 545431.00 764.51 762.10 30.5 --732.10 15.0 30.0 747.10 732.10 -- MW-20D CAMA/NPDES --Deep PVC 2 1179558.00 545809.00 665.20 662.63 21.5 --641.13 6.5 21.5 656.13 641.13 -- MW-20DR CAMA/NPDES --Bedrock PVC 2 1179556.00 545807.10 665.38 662.76 63.0 --600.26 12.5 62.5 650.26 600.26 -- MW-21BR CAMA 3/27/2015 Bedrock PVC 2 1180097.69 544846.80 777.56 775.77 95.8 46.8 689.62 81.1 86.1 694.67 689.67 -- MW-21D CAMA/NPDES 1/3/2011 Deep PVC 2 1180102.00 544842.60 777.51 775.43 21.5 --754.23 6.6 21.2 768.83 754.23 -- MW-22BR CAMA 6/16/2015 Bedrock PVC 2 1179648.35 542828.34 821.11 819.22 100.5 44.7 727.95 86.0 91.0 733.22 728.22 -- MW-22DR CAMA/NPDES 1/12/2011 Bedrock PVC 2 1179651.00 542820.80 821.81 818.59 90.4 38.6 728.39 40.4 90.2 778.19 728.39 -- MW-23D CAMA/NPDES --Deep PVC 2 1176393.00 544306.90 734.08 731.09 46.2 --685.09 36.0 46.0 695.09 685.09 -- MW-23DR CAMA/NPDES 12/16/2010 Bedrock PVC 2 1176399.00 544306.30 733.80 730.69 95.5 48.0 635.69 45.0 95.0 685.69 635.69 -- MW-23S CAMA 3/1/2016 Shallow PVC 2 1176385.60 544296.91 733.62 730.94 27.0 --705.94 10.0 25.0 720.94 705.94 -- MW-24D CAMA/NPDES --Deep PVC 2 1178297.00 541289.40 816.36 813.13 53.4 --760.13 33.2 53.0 779.93 760.13 -- MW-24DR CAMA/NPDES 1/3/2012 Bedrock PVC 2 1178293.00 541281.00 816.28 813.31 105.5 56.8 708.21 60.3 105.1 753.01 708.21 -- MW-25DR CAMA/NPDES 1/6/2011 Bedrock PVC 2 1178089.00 545921.80 667.05 664.53 87.3 35.0 577.53 37.3 87.0 627.23 577.53 -- MW-30D CAMA 3/16/2015 Deep PVC 2 1173384.07 542470.65 833.26 831.12 101.1 83.3 740.08 86.1 91.1 745.02 740.02 -- MW-30DA CAMA 10/17/2017 Deep PVC 2 1173390.01 542496.19 835.05 832.25 ----740.25 87.0 92.0 745.25 740.25 -- MW-30S CAMA 3/10/2015 Shallow PVC 2 1173386.25 542484.88 833.73 831.49 48.0 --783.83 32.7 47.7 798.83 783.83 -- TABLE 2-1 WELL CONSTRUCTION DATA CLIFFSIDE STEAM STATION DUKE ENERGY CAROLINAS, MOORESBORO, NC P:\Duke Energy Carolinas\21. CLIFFSIDE\CSA Update\Tables\Table 2-1 Well Construction Page 5 of 5 ID Program Date Installed Flow Layer Material Diameter (Inches) Easting (Feet) Northing (Feet) Measuring Point TOC Elevation (Feet-NAVD 88) Ground Surface Elevation (Feet-NAVD 88) Boring Depth1, 2 (Feet-BGS) Surface Casing Depth2 (Feet-BGS) Total Well Depth (Feet-BGS) Top of Screen Elevation (Feet-NAVD 88) Bottom of Screen Elevation (Feet-NAVD 88) Date Well Abandoned Screened Interval2 (Feet-BGS) MW-32BR CAMA 3/19/2015 Bedrock PVC 2 1172313.50 542916.96 839.40 837.47 91.2 41.7 764.87 62.5 72.5 774.97 764.97 -- MW-32D CAMA 3/19/2015 Deep PVC 2 1172308.70 542927.03 839.28 837.34 56.8 39.0 783.75 48.5 53.5 788.84 783.84 -- MW-32S CAMA 3/13/2015 Shallow PVC 2 1172312.99 542935.85 839.71 837.64 35.0 --802.71 20.0 35.0 817.64 802.64 -- MW-34BRU CAMA 5/27/2015 Deep PVC 2 1171585.40 544844.38 751.66 749.85 50.7 35.8 701.15 43.7 48.7 706.15 701.15 -- MW-34S CAMA 5/21/2015 Shallow PVC 2 1171592.47 544847.26 751.87 749.87 30.0 --720.47 14.4 29.4 735.47 720.47 -- MW-36BRU CAMA 6/1/2015 Deep PVC 2 1172349.08 545612.63 678.40 676.49 85.6 63.5 593.36 77.6 82.6 598.89 593.89 -- MW-36S CAMA 5/28/2015 Shallow PVC 2 1172353.94 545610.32 678.87 676.84 20.0 --657.87 4.0 19.0 672.84 657.84 -- MW-38BR CAMA 9/27/2016 Bedrock PVC 2 1173824.49 545675.26 707.70 707.97 125.5 --707.97 97.5 102.5 610.47 605.47 -- MW-38D CAMA 4/8/2015 Deep PVC 2 1173812.70 545675.79 707.68 707.90 81.5 64.0 633.90 69.0 74.0 638.90 633.90 -- MW-38S CAMA 3/4/2015 Shallow PVC 2 1173810.80 545680.97 707.60 707.85 55.0 --655.16 37.7 52.7 670.15 655.15 -- MW-40BRU CAMA 4/6/2015 Deep PVC 2 1174668.81 545211.31 709.56 710.06 40.3 24.7 674.66 30.4 35.4 679.66 674.66 -- MW-40S CAMA 4/8/2015 Shallow PVC 2 1174674.71 545216.38 709.38 709.67 21.5 --689.67 5.0 20.0 704.67 689.67 -- MW-42D CAMA 3/11/2015 Deep PVC 2 1175355.63 543355.32 811.12 809.02 55.5 39.7 759.32 44.7 49.7 764.32 759.32 4/12/2017 MW-42DA CAMA 4/7/2017 Deep PVC 2 1175334.26 543343.11 812.02 808.73 57.9 --754.44 49.3 54.3 759.43 754.43 -- MW-42S CAMA 3/3/2015 Shallow PVC 2 1175362.41 543353.33 811.47 809.47 38.5 --771.47 28.0 38.0 781.47 771.47 -- SY-1 --9/4/2017 Shallow PVC 2 1173343.23 546141.41 700.18 697.38 41.0 --697.38 26.0 41.0 671.38 656.38 -- SY-2 --9/4/2017 Shallow PVC 2 1173559.37 546221.04 706.88 704.22 48.5 --704.22 33.5 48.5 670.72 655.72 -- SY-3 --9/5/2017 Shallow PVC 2 1173836.71 546214.41 710.04 707.68 55.6 --707.68 36.4 51.4 671.28 656.28 -- SY-4 --9/5/2017 Shallow PVC 2 1174169.15 546334.16 710.22 707.68 53.5 --707.68 38.0 53.0 669.68 654.68 -- SY-5 --9/5/2017 Shallow PVC 2 1174180.48 546697.56 709.96 707.34 55.1 --707.34 39.8 54.8 667.54 652.54 -- SYBG-1 --9/5/2017 Shallow PVC 2 1173347.67 546750.52 705.18 702.45 28.6 --702.45 11.0 26.0 691.45 676.45 -- U5-1D CAMA 4/25/2015 Deep PVC 2 1172474.31 544204.05 802.94 801.00 68.2 46.0 741.00 55.0 60.0 746.00 741.00 -- U5-1S CAMA 4/20/2015 Shallow PVC 2 1172478.77 544207.33 802.71 800.82 55.0 --746.82 39.0 54.0 761.82 746.82 -- U5-2BR CAMA --Bedrock PVC 2 1172562.42 544669.18 795.06 792.11 106.0 74.0 686.80 100.3 105.3 691.80 686.80 -- U5-2D CAMA 5/4/2015 Deep PVC 2 1172564.38 544678.47 793.73 791.99 80.3 65.5 714.99 72.0 77.0 719.99 714.99 -- U5-2S-SL CAMA 4/29/2015 Ash Pore Water PVC 2 1172558.60 544678.50 --792.17 67.0 --727.17 50.0 65.0 742.17 727.17 4/12/2017 U5-2S-SLA CAMA 6/22/2016 Ash Pore Water PVC 2 1172556.45 544669.35 795.42 792.39 65.0 --727.39 50.0 65.0 742.39 727.39 -- U5-3D CAMA 6/1/2015 Deep PVC 2 1172643.60 545043.91 765.68 765.91 81.4 63.9 687.09 73.8 78.8 692.09 687.09 Date Unknown U5-3S CAMA 4/23/2015 Shallow PVC 2 1172647.90 545042.70 --766.10 51.0 --716.10 35.0 50.0 731.10 716.10 Date Unknown U5-3SA CAMA 2/26/2016 Shallow PVC 2 1172638.67 545045.70 765.85 766.06 57.0 --710.00 41.0 56.0 725.06 710.06 Date Unknown U5-4BR CAMA 5/22/2015 Bedrock PVC 2 1173140.33 544943.89 765.06 765.31 149.6 99.1 635.21 125.1 130.1 640.21 635.21 -- U5-4BRA CAMA 4/11/2017 Bedrock PVC 2 1173165.30 544945.38 765.11 765.34 ----626.34 129.0 139.0 636.34 626.34 -- U5-4D CAMA 4/30/2015 Deep PVC 2 1173133.62 544943.46 764.99 765.19 116.4 --656.01 104.2 109.2 661.01 656.01 -- U5-4S CAMA 4/22/2015 Shallow PVC 2 1173128.56 544943.87 764.82 765.17 76.0 --690.38 59.8 74.8 705.38 690.38 -- U5-5BR CAMA 10/3/2016 Bedrock PVC 2 1173689.45 545118.33 765.66 765.62 ----655.12 105.5 110.5 660.12 655.12 -- U5-5D CAMA 5/5/2015 Deep PVC 2 1173681.05 545115.11 765.40 765.69 70.6 50.8 696.47 65.5 69.5 700.19 696.19 -- U5-6D CAMA 4/28/2015 Deep PVC 2 1174118.33 544862.59 765.19 765.43 68.5 53.0 703.93 56.5 61.5 708.93 703.93 -- U5-6S CAMA 4/14/2015 Shallow PVC 2 1174112.58 544871.20 765.28 765.64 53.4 --713.64 37.0 52.0 728.64 713.64 -- U5-7D CAMA 4/8/2015 Deep PVC 2 1173958.04 544583.00 767.37 767.62 85.7 70.2 690.83 71.5 76.8 696.13 690.83 7/13/2016 U5-7S CAMA 3/31/2015 Ash Pore Water PVC 2 1173960.06 544587.86 767.30 767.56 38.0 --730.59 22.0 37.0 745.59 730.59 7/13/2016 U5-7SL CAMA 4/2/2015 Ash Pore Water PVC 2 1173962.12 544593.92 767.21 767.58 68.0 --701.62 56.0 66.0 711.62 701.62 7/13/2016 U5-8BR CAMA 2/2/2016 Bedrock PVC 2 1174610.73 543330.49 770.31 770.54 127.0 76.6 644.64 120.9 125.9 649.64 644.64 -- U5-8D CAMA 5/9/2015 Deep PVC 2 1174601.29 543339.56 770.25 770.57 84.1 69.0 694.57 71.0 76.0 699.57 694.57 -- U5-8S CAMA 5/5/2015 Shallow PVC 2 1174605.44 543335.66 770.29 770.63 21.0 --750.63 5.0 20.0 765.63 750.63 -- Prepared by: DMY Checked by: KDF Notes: BGS - Below ground surface PVC- Polyvinyl chloride NA - Not applicable NM - Not Measured TOC - Top of Casing ft - feet -- - No Data Available 1 - "Boring Depth" is the total depth of soil boring; "Total Well Depth" is the depth to the bottom of the filter pack. 2 - Values measured during well installation or calculated with values measured during well installation. TABLE 2-2 NPDES GROUNDWATER MONITORING REQUIREMENTS CLIFFSIDE STEAM STATION DUKE ENERGY CAROLINAS, MOORESBORO, NORTH CAROLINA P:\Duke Energy Carolinas\21. CLIFFSIDE\CSA Update\Tables\ Table 2-2 NPDES Groundwater Monitoring Requirements Page 1 of 1 Aluminum Antimony Arsenic Barium Beryllium Boron Cadmium Calcium Cobalt Chromium Copper Iron Lead Magnesium Manganese Molybdenum Mercury Nickel Potassium Selenium Sodium Strontium Thallium Vanadium Zinc Chloride Sulfate Alkalinity Bicarobonate Carbonate Total Dissolved Solids Total Suspended Solids Turbidity pH Temperature Specific Conductance Dissolved Oxygen Oxidation Reduction Potential Water Level Prepared by: DMY Checked by: ALA April, August, December Field Parameters MONITORING WELLS PARAMETERS Laboratory Parameters FREQUENCY Monitoring Wells: MW-20D, MW-20DR, MW- 21D, MW-22DR, MW-23D, MW-23DR, MW-24D, MW- 24DR, MW-25DR Source: HDR, Comprehensive Site Assessment Report Cliffside Steam Station Ash Basin, August 18, 2015 Page 1 of 1 Table 2-3. Summary of Onsite Environmental Incidents NCDENR Incident # Year Reported Location of Incident Impacted Media Brief Description Status 3693 1988 Units 1-4 Soil/Groundwater Fuel oil from station light-off Conditional closure – June 1997 28482 2006 Units 1-4 Soil/Groundwater Diesel, tank closed in place during 1980s Conditional closure – Feb 2007; land –use restriction in Dec. 2007 28594 2007 Unit 5 Soil 550 gal UST Closed – March 2008 41322 2014 Unit 5 Soil Diesel from coal handling piping LSA Report completed and submitted to Asheville Office of NCDENR in July 2015 Note: 1. Information regarding onsite environmental incidents provided by Duke Energy. Source: HDR, Comprehensive Site Assessment Report Cliffside Steam Station Ash Basin, August 18, 2015 Page 1 of 1 Table 3-1. Range (10th percentile – 90th percentile) in Bulk Composition of Fly Ash, Bottom Ash, Rock, and Soil (Source: EPRI 2009a) Table 3-2. Soil/Material Properties for Ash, Fill, Alluvium, and Soil/Saprolite Source: HDR, Comprehensive Site Assessment Report Cliffside Steam Station Ash Basin, August 18, 2015 Page 1 of 4 Plastic Limit (PL) Liquid Limits (LL) Plasticity Index (PI) Coarse7 Fine8 Coarse9 Medium10 Fine11 Silt12 Clay13 AB-1D Jar 33.5-35 Tan-Brown Micaceous Silty Sand --16.3 ---0.0 1.1 3.2 28.3 34.5 23.2 9.7 - AB-1D Jar 73.5-75 Red-Brown Micaceous Silty Sand --17.0 ---0.0 0.2 1.7 27.5 33.6 25.9 11.1 - AB-1S UD 14-16 Tan-Brown Micaceous Silty Sand SM 2.709 15.7 NP 36 NP 0.0 5.7 4.5 29.7 36.2 19.6 4.3 0.3994 AB-1S UD 103-105 Red-Brown Sandy Elastic Silt MH 2.689 29.7 31 56 25 0.0 0.8 2.5 21.0 20.7 18.6 36.4 0.4440 AB-1S UD 107-109 Red-Brown Sandy Elastic Silt MH 2.679 25.5 34 66 32 0.0 1.2 6.1 17.8 15.7 14.9 44.3 0.4128 AB-2D Jar 8.5-10 Red-Brown Silty Sand --14.9 ---0.0 1.7 4.5 23.6 29.8 23.2 17.2 - AB-2D Jar 38.5-40 Yellow-Brown Micaceous Silty Sand --16.2 ---0.0 0.6 4.5 28.9 32.6 20.3 13.1 - AB-2D Jar 53.5-55 Red-Brown Micaceous Silty Sand --26.1 ---0.0 1.5 3.4 30.4 34.1 16.1 14.5 - AB-2S UD 20-22 Red-Brown Silty Sand SM 2.695 19.8 31 49 18 0.0 0.1 4.7 23.9 25.1 17.2 29.0 0.3972 AB-3BRU UD 8-10 Fly ash SM 2.208 32.4 NP NV NP 0.0 2.4 10.1 17.4 26.1 37.7 6.3 0.4700 AB-3S UD 40-42 Fly ash ML 2.207 44.0 NP NV NP 0.0 0.0 0.0 0.3 10.4 72.7 16.6 0.4892 AB-4D Jar 8.5-10 Fly Ash --49.4 ---0.0 2.6 7.5 26.4 24.7 27.3 11.5 - AB-4D Jar 13.5-15 Fly Ash --71.2 ---0.0 0.3 0.9 6.8 52.3 35.4 4.3 - AB-4D Jar 18.5-20 Fly Ash --74.0 ---0.0 1.0 1.8 12.1 41.6 30.7 12.8 - AB-4D Jar 23.5-25 Fly Ash --71.0 ---0.0 0.4 1.7 9.1 52.3 30.1 6.4 - AB-4D Jar 28.5-30 Fly Ash --65.6 ---0.0 0.0 0.2 0.9 23.0 55.3 20.6 - AB-4D Jar 33.5-35 Fly Ash --71.4 ---0.0 0.0 0.0 0.1 5.1 70.3 24.5 - AB-4D Jar 38.5-40 Fly Ash --40.1 ---0.0 0.0 0.0 0.3 2.1 77.4 20.2 - AB-5S UD 19-21 Fly Ash ML 2.046 81.1 NP NV NP 0.0 0.0 0.0 0.1 32.7 64.0 3.2 0.6178 AB-5S UD 38-39.5 Olive-Brown Silty Sand SM 2.698 15.7 NP NV NP 0.0 13.0 6.7 20.5 42.6 13.1 4.1 0.3017 AB-6S UD 15-17 Fly ash ML 2.069 66.0 NP NV NP 0.0 0.0 1.1 0.7 37.3 57.1 3.8 0.5742 AS-1D Jar 58.5-60 Red-Brown and White Silty Sand --15.3 ---0.0 3.4 7.3 26.5 28.3 25.2 9.3 - AS-1D Jar 8.5-10 Red-Brown Silty Sand with Gravel --9.7 ---7.6 17.0 4.2 23.1 25.0 15.7 7.4 - AS-1S UD 38-40 Fly Ash ML 2.192 30.3 NP NV NP 0.0 0.2 1.0 1.6 15.6 73.5 8.1 0.4603 AS-1SB UD 98-100 White-Brown Silty Sand SM 2.662 20.7 NP 35 NP 0.0 2.2 9.0 25.8 38.6 20.0 4.4 0.4104 AS-5S UD 39-41 Tan-Brown and White Micaceous Silty Sand SM 2.678 19.2 NP 42 NP 0.0 2.6 4.6 25.0 42.0 22.1 3.7 0.4029 AS-7S UD 19-21 Fly Ash ML 2.140 39.2 NP NV NP 0.0 0.2 0.2 2.2 11.8 79.8 5.8 0.5108 BG-1BR UD 13-15 Yellow-Brown Silty Sand SM 2.710 14.9 NP NV NP 0.0 2.7 2.3 18.1 46.6 23.1 7.2 0.4205 BG-2D Jar 43.5-45 Brown Silty Sand --17.6 ---0.0 3.2 4.0 14.3 52.3 16.6 9.6 - GWA-11S UD 8.5-10 Brown Silty Sand SM 2.646 10.5 NP NV NP 0.0 0.0 0.0 12.6 70.0 10.7 6.7 0.4363 GWA-13BR Jar 4.5-5 Red-Brown Micaceous Clayey Sand --39.4 ---0.0 0.0 2.1 20.4 50.5 12.7 14.3 - GWA-13BR Jar 18-19.5 Brown Micaceous Sandy Silt --16.9 ---0.0 10.0 5.0 13.5 55.6 12.2 3.7 - GWA-14S UD 5.5-7.5 Tan-Brown Micaceous Silty Sand SM 2.666 27.4 40 51 11 0.0 1.1 3.7 17.9 46.8 24.1 6.4 0.5175 GWA-14S UD 20-22 Tan-Brown Micaceous Silty Sand SM 2.673 21.9 46 50 4 0.0 0.0 0.2 9.8 70.9 14.9 4.2 0.4457 GWA-20S UD 17-19 Red-Brown Clayey Sand SC 2.726 13.7 23 39 16 0.0 7.1 6.9 17.6 29.3 14.6 24.5 0.2802 GWA-23D Jar 3.5-5 Light-Brown Gravel with Silt and Sand --5.2 ---0.0 57.2 10.1 8.5 13.0 8.4 2.8 - GWA-23D Jar 8.5-10 Light-Brown Gravel with Sand GP -2.4 ---0.0 76.1 8.5 5.1 5.9 4.4 -- GWA-25S UD 13-15 Orange-Brown Silty Sand SM 2.696 21.8 NP 33 NP 0.0 1.4 12.9 39.0 31.0 13.3 2.4 0.4890 GWA-27S UD 4-6 Orange-White Silty Sand SM 2.600 19.4 NP NV NP 0.0 0.9 9.7 32.8 26.4 18.3 11.9 0.4107 GWA-30S UD 23.5-24.3 Orange-Brown Clayey Sand (SC)SC 2.583 11.4 18 34 16 0.0 1.0 3.9 14.6 36.1 10.7 33.7 0.3849 GWA-33S UD 7-8 Grey Silty Sand SM 2.634 23.8 NP NV NP 0.0 3.9 4.9 26.2 43.1 14.1 7.8 0.3864 GWA-5BRU UD 19-19.9 Brown Micaceous Silty Sand SM 2.634 37.6 NP NV NP 0.0 0.0 2.3 19.5 61.1 9.2 7.9 0.5102 GWA-6S UD 5-7 Tan-Brown Silty Sand SM 2.663 24.9 NP 35 NP 0.0 0.1 1.4 13.4 62.7 17.3 5.1 0.4655 GWA-6S UD 30-31.3 Tan-Brown Silty Sand SM 2.694 24.6 NP 45 NP 0.0 0.0 0.1 9.7 65.5 18.5 6.2 0.4853 IB-2S/SL UD 8-10 Fly Ash ML 2.186 -NP NV NP 0.0 1.2 1.8 5.1 37.1 48.8 6.0 - IB-2S/SL UD 40-42 Grey Silty Sand SM 2.547 26.3 NP NV NP 0.0 0.0 0.0 2.4 82.1 9.6 5.9 0.4990 IB-3B UD 49-51 Fly Ash ML 2.464 65.8 NP NV NP 0.0 0.0 0.0 0.9 22.0 49.0 28.1 0.6252 IB-3SB UD 37-39 Brown Micaceous Silty Sand SM 2.667 29.1 NP 48 NP 0.0 3.9 10.0 19.0 47.0 17.4 2.7 0.4916 IB-4D Jar 12-13.5 Fly Ash --69.3 ---0.0 0.0 0.0 0.7 28.3 66.1 4.9 - MW-32BR UD 13-15 Red-Brown Clayey Sand SC 2.660 16.9 26 47 21 0.0 1.2 5.3 23.6 25.7 7.5 36.7 0.4181 MW-42S UD 28-29.1 Tan-Brown Clayey Sand SC 2.660 -26 43 17 0.0 6.0 4.3 16.6 38.0 21.2 13.9 - U5-2D UD 55-57 Fly Ash ML 2.187 26.8 NP NV NP 0.0 0.0 0.0 0.5 5.4 80.0 14.1 0.3587 U5-3D UD 25-27 Tan-Brown Silty Sand SM 2.699 12.1 NP 38 NP 0.0 3.7 4.0 19.2 50.2 15.7 7.2 0.3213 U5-6S UD 13-15 Red-Brown Silty Sand SM 2.655 19.1 38 40 2 0.0 0.7 2.5 19.6 36.9 23.1 17.2 0.3862 U5-7SL UD 20-22 Fly Ash SM 2.610 15.1 NP NV NP 0.0 13.8 18.1 20.7 33.2 13.3 0.9 0.3832 U5-8D Jar 33.5-35 Brown Micaceous Silty Sand --21.3 ---0.0 0.0 1.0 21.0 58.5 13.0 6.5 - U5-8D Jar 63.5-65 Yellow-Brown Micaceous Silty Sand --16.8 ---0.0 9.2 9.3 24.7 36.1 13.5 7.2 - % Gravel % Sand % Fines Borehole Sample # Depth (ft)Material Description USCS1 Specific Gravity2 Natural Moisture Content3 (%) Atterberg Limits4 Grain Size5 Total Porosity2 (%) Table 3-2. Soil/Material Properties for Ash, Fill, Alluvium, and Soil/Saprolite Source: HDR, Comprehensive Site Assessment Report Cliffside Steam Station Ash Basin, August 18, 2015 Page 2 of 4 Plastic Limit (PL) Liquid Limits (LL) Plasticity Index (PI) Coarse7 Fine8 Coarse9 Medium10 Fine11 Silt12 Clay13 % Gravel % Sand % Fines Borehole Sample # Depth (ft)Material Description USCS1 Specific Gravity2 Natural Moisture Content3 (%) Atterberg Limits4 Grain Size5 Total Porosity2 (%) Notes: 1. ASTM Standard D 2487, Standard Practice for Classification of Soils for Engineering Purposes (Unified Soil Classification System) 2. ASTM Standard D 854, "Standard Test Methods for Specific Gravity of Soil Solids by Water Pycnometer" 3. ASTM Standard D 2216, "Standard Test Methods for Laboratory Determination of Water (Moisture) Content of Soil and Rock by Mass 4. ASTM Standard D 4318, "Standard Test Methods for Liquid Limit, Plastic Limit, and Plasticity Index of Soils 5. ASTM Standard D 422, "Standard Test Method for Particle-Size Analysis of Soils 6. ASTM Standard D 5084, "Standard Test Methods for Measurement of Hydraulic Conductivity of Saturated Porous Materials Using a Flexible Wall Permeameter" 7. Coarse Gravel: 19.0mm – 75mm 8. Fine Gravel: 4.75mm – 19.0mm 9. Coarse Sand: 2.0mm – 4.75mm 10. Medium Sand: 0.425mm – 2.0mm 11. Fine Sand: 0.075mm – 0.425mm 12. Silt: 0.005mm – 0.075mm 13. Clay: <0.005mm 14. All columns directly derived from laboratory analyses except "Estimated Specific Yield/Effective Porosity." Specific yield/effective porosity estimated from soil testing using Fetter/Bear diagrams (Johnson, 1967). 15. Effective porosity and specific yield are not synonymous. For practical purposes, they may be estimated as approximately equal in value. 16. AB-3BRU represented as AB-3D on geotechnical lab reports due to well re-name event after sample submission. Table 3-2. Soil/Material Properties for Ash, Fill, Alluvium, and Soil/Saprolite Source: HDR, Comprehensive Site Assessment Report Cliffside Steam Station Ash Basin, August 18, 2015 Page 3 of 4 AB-1D Jar 33.5-35 Tan-Brown Micaceous Silty Sand AB-1D Jar 73.5-75 Red-Brown Micaceous Silty Sand AB-1S UD 14-16 Tan-Brown Micaceous Silty Sand AB-1S UD 103-105 Red-Brown Sandy Elastic Silt AB-1S UD 107-109 Red-Brown Sandy Elastic Silt AB-2D Jar 8.5-10 Red-Brown Silty Sand AB-2D Jar 38.5-40 Yellow-Brown Micaceous Silty Sand AB-2D Jar 53.5-55 Red-Brown Micaceous Silty Sand AB-2S UD 20-22 Red-Brown Silty Sand AB-3BRU UD 8-10 Fly ash AB-3S UD 40-42 Fly ash AB-4D Jar 8.5-10 Fly Ash AB-4D Jar 13.5-15 Fly Ash AB-4D Jar 18.5-20 Fly Ash AB-4D Jar 23.5-25 Fly Ash AB-4D Jar 28.5-30 Fly Ash AB-4D Jar 33.5-35 Fly Ash AB-4D Jar 38.5-40 Fly Ash AB-5S UD 19-21 Fly Ash AB-5S UD 38-39.5 Olive-Brown Silty Sand AB-6S UD 15-17 Fly ash AS-1D Jar 58.5-60 Red-Brown and White Silty Sand AS-1D Jar 8.5-10 Red-Brown Silty Sand with Gravel AS-1S UD 38-40 Fly Ash AS-1SB UD 98-100 White-Brown Silty Sand AS-5S UD 39-41 Tan-Brown and White Micaceous Silty Sand AS-7S UD 19-21 Fly Ash BG-1BR UD 13-15 Yellow-Brown Silty Sand BG-2D Jar 43.5-45 Brown Silty Sand GWA-11S UD 8.5-10 Brown Silty Sand GWA-13BR Jar 4.5-5 Red-Brown Micaceous Clayey Sand GWA-13BR Jar 18-19.5 Brown Micaceous Sandy Silt GWA-14S UD 5.5-7.5 Tan-Brown Micaceous Silty Sand GWA-14S UD 20-22 Tan-Brown Micaceous Silty Sand GWA-20S UD 17-19 Red-Brown Clayey Sand GWA-23D Jar 3.5-5 Light-Brown Gravel with Silt and Sand GWA-23D Jar 8.5-10 Light-Brown Gravel with Sand GWA-25S UD 13-15 Orange-Brown Silty Sand GWA-27S UD 4-6 Orange-White Silty Sand GWA-30S UD 23.5-24.3 Orange-Brown Clayey Sand (SC) GWA-33S UD 7-8 Grey Silty Sand GWA-5BRU UD 19-19.9 Brown Micaceous Silty Sand GWA-6S UD 5-7 Tan-Brown Silty Sand GWA-6S UD 30-31.3 Tan-Brown Silty Sand IB-2S/SL UD 8-10 Fly Ash IB-2S/SL UD 40-42 Grey Silty Sand IB-3B UD 49-51 Fly Ash IB-3SB UD 37-39 Brown Micaceous Silty Sand IB-4D Jar 12-13.5 Fly Ash MW-32BR UD 13-15 Red-Brown Clayey Sand MW-42S UD 28-29.1 Tan-Brown Clayey Sand U5-2D UD 55-57 Fly Ash U5-3D UD 25-27 Tan-Brown Silty Sand U5-6S UD 13-15 Red-Brown Silty Sand U5-7SL UD 20-22 Fly Ash U5-8D Jar 33.5-35 Brown Micaceous Silty Sand U5-8D Jar 63.5-65 Yellow-Brown Micaceous Silty Sand Borehole Sample # Depth (ft)Material Description 21.5 -F 19.0 -F 29.0 5.24E-05 F -1.01E-07 F -7.37E-07 F 14.0 -F 17.5 -F 16.5 -F 5.0 8.59E-05 F 22.0 1.17E-04 A 6.25 3.25E-05 A 18.5 -A 25.0 -A 16.5 -A 24.0 -A 7.5 -A 3.8 -A 4.0 -A 18.0 1.30E-04 A 30.5 3.01E-06 A, M1 19.5 5.82E-05 A 26.0 -A 21.5 -F 11.0 6.92E-05 A 28.0 1.74E-05 M1 28.5 1.30E-04 M2 10.0 7.20E-05 A 25.0 1.60E-04 M1 23.0 -M1 28.0 6.19E-04 S 17.0 -M1 31.5 -M2 25.0 1.32E-04 M1 30.0 5.29E-05 M1 8.0 5.45E-06 M2 35.0 -M2 42.5 -M2 32.5 2.57E-04 M2 19.5 5.28E-05 M1 -7.78E-05 M1 26.0 6.72E-07 M1 27.0 5.22E-05 M1 28.5 1.67E-04 M1 26.5 2.14E-04 M1 20.5 -A 29.0 4.13E-05 S 4.5 1.51E-07 S 31.0 2.32E-05 F 16.5 -A -4.88E-05 M1 16.5 -M1 5.0 1.38E-05 A 26.0 5.96E-05 F 13.5 5.52E-06 F -3.80E-04 A 27.5 -M1 27.0 -M2 Hydrostratigraphic LayerVertical Hydraulic Conductivty6, kv20, (cm/sec) Estimated Specific Yield/Effective Porosity14 (%) Table 3-2. Soil/Material Properties for Ash, Fill, Alluvium, and Soil/Saprolite Source: HDR, Comprehensive Site Assessment Report Cliffside Steam Station Ash Basin, August 18, 2015 Page 4 of 4 Borehole Sample # Depth (ft)Material Description Notes: 1. ASTM Standard D 2487, Standard Practice for Classification of Soils for Engineering Pu 2. ASTM Standard D 854, "Standard Test Methods for Specific Gravity of Soil Solids by W 3. ASTM Standard D 2216, "Standard Test Methods for Laboratory Determination of Wate 4. ASTM Standard D 4318, "Standard Test Methods for Liquid Limit, Plastic Limit, and Pla 5. ASTM Standard D 422, "Standard Test Method for Particle-Size Analysis of Soils 6. ASTM Standard D 5084, "Standard Test Methods for Measurement of Hydraulic Condu 7. Coarse Gravel: 19.0mm – 75mm 8. Fine Gravel: 4.75mm – 19.0mm 9. Coarse Sand: 2.0mm – 4.75mm 10. Medium Sand: 0.425mm – 2.0mm 11. Fine Sand: 0.075mm – 0.425mm 12. Silt: 0.005mm – 0.075mm 13. Clay: <0.005mm 14. All columns directly derived from laboratory analyses except "Estimated Specific Yield/Ef Specific yield/effective porosity estimated from soil testing using Fetter/Bear diagrams (J 15. Effective porosity and specific yield are not synonymous. For practical purposes, they ma 16. AB-3BRU represented as AB-3D on geotechnical lab reports due to well re-name event Hydrostratigraphic LayerVertical Hydraulic Conductivty6, kv20, (cm/sec) Estimated Specific Yield/Effective Porosity14 (%) TABLE 3-3 REGIONAL BACKGROUND SOIL SPLP DATA CLIFFSIDE STEAM STATION DUKE ENERGY CAROLINAS, LLC, MOORESBORO, NC P:\Duke Energy Carolinas\21. CLIFFSIDE\CSA Update\Tables\Table 3-3 Regional Background Soil SPLP DataTable 3-3 Regional Background Soil SPLP Data Page 1 of 2 pH Aluminum Antimony Arsenic Barium Beryllium Boron Cadmium Calcium Chloride Chromium (VI)Chromium Cobalt Copper Iron Lead Magnesium S.U.ug/L ug/L ug/L ug/L ug/L ug/L ug/L mg/L mg/L ug/L ug/L ug/L ug/L ug/L ug/L mg/L 6.5-8.5 NE 1*10 700 4*700 2 NE 250 10 10 1*1000 300 15 NE Site Name Sample ID Sample Collection Date Allen BG-01D (45-50)05/01/2015 NA 397 <0.5 <0.5 298 <0.2 234 <0.08 0.247 <7.3 NA <0.5 0.24 j 1.2 172 J+<0.1 j 0.0951 J+ Asheville CB-09 SB (25-27) 04/12/2015 NA 46 <0.5 <0.5 60.3 <0.2 58.8 <0.08 0.123 <6 NA 0.96 0.13 j 0.27 j <50 0.073 j 0.0238 Asheville MW-23BR (2-3)06/14/2015 NA 44.4 <0.5 0.14 j 139 0.11 j 88.4 0.1 0.442 <6.1 NA 1.7 0.89 0.86 j 17.3 j 0.12 0.228 Cape Fear BG-01 (Geosyntec) (2.0-2.5)08/20/2013 NA 337 <0.34 <0.42 NA NA 30.9 j 0.55 NA NA NA <1.6 NA <2.7 NA 1.3 NA Cape Fear MW-09 SB (2-3)04/25/2015 NA 9070 0.27 j 4.3 241 0.73 88.9 0.032 j 0.496 <5.4 NA 3.9 15.9 4.7 10800 5.5 1.01 Cape Fear MW-09 SB (6-7)04/25/2015 NA 11600 <0.5 0.93 228 0.4 72.4 0.053 j 1.02 <5.8 NA 6.3 2 5.9 10100 6.3 1.47 Cape Fear MW-22 SB (3-4)06/10/2016 NA 50900 M1 <0.5 2.2 230 1.6 <250 L1 <0.08 2.5 <5 NA 48.7 14.4 43.8 40800 M1 8.3 5.9 Cliffside BG-02D (8.5-10)02/23/2015 NA 648 <0.5 <0.5 126 <0.2 20.6 <0.08 0.191 <6.2 j NA 1.1 2.1 <1 550 0.45 0.106 Cliffside MW-30D (8.5-10)02/23/2015 NA 19.1 <0.5 <0.5 2.5 <0.2 23.2 <0.08 0.204 <8 NA 0.51 4.8 <1 <50 <0.1 0.118 Cliffside MW-30D (28.5-30)02/23/2015 NA 88.6 <0.5 <0.5 3.1 <0.2 21.5 <0.08 0.177 <7.6 NA 1.2 0.79 <1 256 0.17 0.213 Mayo MW-08BR (25.5-26)02/11/2015 NA 53900 <0.5 0.82 702 0.78 <5 0.24 12.8 <5.5 NA 858 83.7 161 93400 5.7 58.2 Mayo MW-12D (25-26)04/27/2015 NA 3.2 j <0.5 <0.5 55.5 <0.2 38 <0.08 0.123 <6 NA 0.23 j 0.19 j 0.74 j <50 0.053 j 0.137 Mayo SB-01 (13.5-14.5)03/04/2015 NA 3030 <0.5 <0.5 38.8 0.3 18.1 <0.08 0.407 <6.4 NA 1.1 2.5 4.4 3140 0.69 0.175 Riverbend BG-02D (48-49)06/15/2015 NA <100 <5 <5 2.7 J+<2 13.7 J+<0.8 0.249 j <6.3 j NA <5 <5 <10 <500 <1 0.108 J+ Riverbend BG-03D (23-24)06/13/2015 NA 2330 <0.5 0.25 j 135 0.15 j 59.8 0.094 0.264 J+<6.3 NA 1.7 J+0.51 J+12.2 386 J+0.76 0.0827 J+ Riverbend GWA-21D (8.5-10)07/16/2015 NA 262 J+<25 <25 <500 j <10 <250 j <4 <2 j <6.1 NA <25 j <25 <50 j <2500 j <5 j <0.5 j Riverbend GWA-21D (48.5-50)07/18/2015 NA <500 <25 <25 5.4 j <10 <250 j <4 <2 <6.2 NA <25 <25 <50 <2500 <5 <0.5 Roxboro MW-08 (14-16)04/27/2015 NA 29900 <0.5 1.4 351 1 16 <0.08 2.83 <5.3 NA 7.1 17.9 15.8 41500 11.3 4.9 Roxboro MW-14BR (37-38)02/25/2015 NA 10400 <0.5 0.53 304 <0.2 48 <0.08 3.36 2.8 j NA 7.3 12.9 18.3 12700 1.5 6.8 Roxboro MW-18 (31-33) 05/16/2015 NA 36400 <0.5 1.5 447 1.2 79.5 0.2 3.23 <6 NA 9.2 5.4 18 26000 7.9 3.32 Marshall GWA-04D (52-53)06/30/2015 NA 2180 <0.5 0.17 j 112 0.26 66.5 <0.08 0.258 <5 j NA 4 0.84 4.5 2520 0.44 0.141 Marshall GWA-05D (27.5-29)07/01/2015 NA 69.2 J+<5 <5 6.2 J+<2 <50 <0.8 <0.4 <7.7 NA <5 <5 j NA <500 j <1 0.0773 J+ Prepared by: BER Checked by: ECW Notes: - Bold highlighted concentration indicates exceedance of the 15A NCAC 02L .0202 Standard or the IMAC. (Effective date for 15A NCAC 02L .0202 Standard and IMAC is April 1, 2013) S.U. - Standard Unit mg/L - Milligrams per liter mg - N/L - Milligrams nitrogen per liter ug/L - Micrograms per liter NE - Not established < - concentration not detected at or above the adjusted reporting limit. * - Interim Maximum Allowable Concentrations (IMACs) of the 15A NCAC 02L Standard, Appendix 1, April, 1, 2013. j - Estimated concentration above the adjusted method detection limit and below the adjusted reporting limit. J- - Estimated concentration, biased low. J+ - Estimated concentration, biased high. L1 - Analyte recovery in the laboratory control sample (LCS) was above quality control (QC) limits. Results may be biased high. M1 - Matrix spike recovery was high: the associated Laboratory Control Spike (LCS) was acceptable. NA - Not analyzed 15A NCAC 02L Standard Reporting Units Analytical Parameter Analytical Results TABLE 3-3 REGIONAL BACKGROUND SOIL SPLP DATA CLIFFSIDE STEAM STATION DUKE ENERGY CAROLINAS, LLC, MOORESBORO, NC P:\Duke Energy Carolinas\21. CLIFFSIDE\CSA Update\Tables\Table 3-3 Regional Background Soil SPLP DataTable 3-3 Regional Background Soil SPLP Data Page 2 of 2 Manganese Mercury Molybdenum Nickel Nitrate (as N)Nitrate Potassium Selenium Silver Sodium Strontium Sulfate Thallium Tin Vanadium Zinc Cr(III) ug/L ug/L ug/L ug/L mg-N/L mg/L mg/L ug/L ug/L mg/L ug/L mg/L ug/L ug/L ug/L ug/L ug/L 50 1 NE 100 10 10 NE 20 20 NE NE 250 0.2*NE 0.3*1000 NE Site Name Sample ID Sample Collection Date Allen BG-01D (45-50)05/01/2015 10.2 J+<0.2 <0.5 0.27 J+NA <0.29 j 0.346 J+<0.5 j NA 1.83 J+6.1 J+3 J+<0.1 j NA 0.39 J+214 J+<0.5 Asheville CB-09 SB (25-27) 04/12/2015 10.5 <0.2 <0.5 0.37 j <0.24 NA 0.597 <0.5 NA 0.412 1.2 1.7 j <0.1 NA <1 54.6 NA Asheville MW-23BR (2-3)06/14/2015 24 <0.2 0.27 j 1.1 <0.24 NA 0.316 <0.5 NA 2.28 6.2 5.5 0.095 j NA <1 88.8 NA Cape Fear BG-01 (Geosyntec) (2.0-2.5)08/20/2013 173 <0.06 NA 1.6 j NA NA NA <0.5 NA NA NA NA <0.15 NA NA <2 NA Cape Fear MW-09 SB (2-3)04/25/2015 173 <0.2 2.1 5.5 <0.22 NA 1.23 0.42 j NA 4.91 10 6.6 0.049 j NA 10.2 88.8 NA Cape Fear MW-09 SB (6-7)04/25/2015 175 <0.2 3.5 2.8 <0.23 NA 1.92 <0.5 NA 4.9 19.2 4.7 0.045 j NA 10.8 74.7 NA Cape Fear MW-22 SB (3-4)06/10/2016 670 <0.2 NA 26 0.24 NA <5 6.1 NA 6.7 L1 30 7.9 0.27 NA 83.5 100 NA Cliffside BG-02D (8.5-10)02/23/2015 37.5 <0.2 j <0.5 0.81 NA <0.25 j 0.34 <0.5 NA 0.334 1.6 2 J-<0.1 NA 1.2 34.1 1.1 Cliffside MW-30D (8.5-10)02/23/2015 97 <0.2 <0.5 0.57 NA 0.44 j-1.12 <0.5 NA 0.702 0.97 3.1 j <0.1 NA <1 <5 0.51 Cliffside MW-30D (28.5-30)02/23/2015 8.6 <0.2 j <0.5 <0.5 NA 0.44 J-0.43 <0.5 NA 0.5100001 <0.5 1.6 j <0.1 NA <1 <5 1.2 Mayo MW-08BR (25.5-26)02/11/2015 3410 <1.2 <0.5 311 0.29 NA 6.36 <0.5 NA 3.74 169 2.8 0.28 NA 166 118 NA Mayo MW-12D (25-26)04/27/2015 3.3 <0.2 <0.5 0.34 j 0.25 NA 0.0965 <0.5 NA 1.25 2.2 3.1 <0.1 NA <1 25.3 NA Mayo SB-01 (13.5-14.5)03/04/2015 313 <0.6 <0.5 0.57 0.38 NA 0.414 <0.5 NA 2.3 12.1 3 <0.1 NA 7 <5 NA Riverbend BG-02D (48-49)06/15/2015 <5 <0.2 j <5 <5 NA 0.92 j 0.428 j <5 NA 0.882 J+1.9 j 2.6 j <1 NA <10 <50 <5 Riverbend BG-03D (23-24)06/13/2015 21.7 J+<0.2 0.28 j 1.4 J+NA <0.25 j 0.299 J+<0.5 NA 2.08 6.4 J+<2.5 j 0.097 j NA 1.8 50.5 J+1.7 J+ Riverbend GWA-21D (8.5-10)07/16/2015 <25 j <0.6 <25 j <25 j NA 0.32 <2.5 j <25 NA <2.5 j <25 j 1.7 j <5 NA <50 <250 j <25 j Riverbend GWA-21D (48.5-50)07/18/2015 12 j <0.6 <25 j <25 NA 0.36 <2.5 <25 NA 3.08 J+<25 2 j <5 NA <50 <250 <25 Roxboro MW-08 (14-16)04/27/2015 1690 <0.2 0.26 j 11.8 <0.21 NA 1.81 0.31 j NA 3.84 50.9 2.8 0.056 j NA 97.6 129 NA Roxboro MW-14BR (37-38)02/25/2015 584 <0.2 <0.5 9.2 0.36 NA 3.38 <0.5 NA 11.4 47.6 2.9 <0.1 NA 42.5 46.5 NA Roxboro MW-18 (31-33) 05/16/2015 1660 <0.2 7.8 7.1 0.47 NA 7.170001 0.46 j NA 7.49 58.3 3.2 0.15 NA 20.8 155 NA Marshall GWA-04D (52-53)06/30/2015 67.1 <0.2 0.43 j 1.4 NA <0.2 j 0.195 <0.5 NA 1.39 4.2 2.4 J+<0.1 NA 6.9 75.2 4 Marshall GWA-05D (27.5-29)07/01/2015 3.2 j <0.2 <5 j <5 j NA <0.31 j 0.307 J-<5 NA 0.577 7.2 J+3.1 J+<1 NA NA <50 <5 Prepared by: BER Checked by: ECW Notes: - Bold highlighted concentration indicates exceedance of the 15A NCAC 02L .0202 Standard or the IMAC. (Effective date for 15A NCAC 02L .0202 Standard and IMAC is April 1, 2013) S.U. - Standard Unit mg/L - Milligrams per liter mg - N/L - Milligrams nitrogen per liter ug/L - Micrograms per liter NE - Not established < - concentration not detected at or above the adjusted reporting limit. * - Interim Maximum Allowable Concentrations (IMACs) of the 15A NCAC 02L Standard, Appendix 1, April, 1, 2013. j - Estimated concentration above the adjusted method detection limit and below the adjusted reporting limit. J- - Estimated concentration, biased low. J+ - Estimated concentration, biased high. L1 - Analyte recovery in the laboratory control sample (LCS) was above quality control (QC) limits. Results may be biased high. M1 - Matrix spike recovery was high: the associated Laboratory Control Spike (LCS) was acceptable. NA - Not analyzed Analytical Parameter Reporting Units 15A NCAC 02L Standard Analytical Results Table 4-1. Public and Private Water Supply Wells Within 0.5-Mile Radius of Cliffside Steam Station Ash Basin Compliance Boundary Source: HDR, Comprehensive Site Assessment Report Cliffside Steam Station Ash Basin, August 18, 2015 Page 1 of 4 Map ID #Public Water System Name County Parcel ID Number Reported Well Use Approximate Distance from Ash Basin Compliance Boundary (ft) Direction from Ash Basin Well Depth (ft-bgs) Well Casing Depth (ft-bgs) Well Yield (gpm) Well Screen Interval (ft-bgs) 1 N/A Rutherford 1574005889660000 Assumed Domestic 2,355 Northwest of Units 1- 4 Inactive Ash Basin No data No data No data No data 4 N/A Rutherford 1574011890650000 Assumed Domestic 2,500 North of Unit 5 Inactive Ash Basin No data No data No data No data 5 N/A Rutherford 1574014893260000 Assumed Domestic 2,180 North/Northwest of Units 1-4 Inactive No data No data No data No data 9 N/A Rutherford 1574014851810000 Assumed Domestic 2,300 Northwest of Units 1- 4 Inactive Ash Basin No data No data No data No data 11 N/A Rutherford 1574014835490000 Assumed Domestic 2,530 Northwest of Units 1- 4 Inactive Ash Basin No data No data No data No data 12 N/A Rutherford 1574012729550000 Assumed Domestic 2,320 North of Unit 5 Inactive Ash Basin No data No data No data No data 14 N/A Rutherford 1574010764810000 Assumed Domestic 2,255 Northwest of Unit 5 Inactive Ash Basin No data No data No data No data 15 N/A Rutherford 1574010761160000 Assumed Domestic 2,240 Northwest of Unit 5 Inactive Ash Basin No data No data No data No data 17 N/A Rutherford 1574000356460000 Assumed Domestic 1,145 West of Unit 5 Inactive Ash Basin No data No data No data No data 20 N/A Cleveland 1584177766 Assumed Domestic 2,430 Northeast of Active Ash Basin No data No data No data No data 25 N/A Cleveland 1584158804 Assumed Domestic 1,675 East/Northeast of Active Ash Basin No data No data No data No data 26 N/A Cleveland 1584253882 Assumed Domestic 2,290 East/Northeast of Active Ash Basin No data No data No data No data 30 N/A Cleveland 1584046582 Assumed Domestic 680 Southeast of Active Ash Basin No data No data No data No data 31 N/A Cleveland 1584148477 Assumed Domestic 1,580 East of Active Ash Basin No data No data No data No data 33 N/A Cleveland 1584138911 Assumed Domestic 1,625 East of Active Ash Basin No data No data No data No data 34 N/A Cleveland 1584235685 Assumed Domestic 1,810 East of Active Ash Basin No data No data No data No data 35 N/A Cleveland 1574939253 Assumed Domestic 310 Southeast of Active Ash Basin No data No data No data No data 36 N/A Cleveland 1574939253 Assumed Domestic 210 Southeast of Active Ash Basin No data No data No data No data 37 N/A Cleveland 1574939253 Assumed Domestic 120 Southeast of Active Ash Basin No data No data No data No data 38 N/A Cleveland 1584235685 Assumed Domestic 2,030 East of Active Ash Basin No data No data No data No data 44 N/A Cleveland 1584122263 Assumed Domestic 1,275 Southeast of Active Ash Basin No data No data No data No data 56 N/A Cleveland 1573990456 Assumed Domestic 2,120 South of Active Ash Basin No data No data No data No data 57 N/A Cleveland 1583080574 Assumed Domestic 2,400 South of Active Ash Basin No data No data No data No data 108 N/A Cleveland 321 Assumed Domestic 109 N/A Cleveland ?Assumed Domestic 110 N/A Cleveland 295 Assumed Domestic Field-Identified Private Water Supply Wells Table 4-1. Public and Private Water Supply Wells Within 0.5-Mile Radius of Cliffside Steam Station Ash Basin Compliance Boundary Source: HDR, Comprehensive Site Assessment Report Cliffside Steam Station Ash Basin, August 18, 2015 Page 2 of 4 Map ID #Public Water System Name County Parcel ID Number Reported Well Use Approximate Distance from Ash Basin Compliance Boundary (ft) Direction from Ash Basin Well Depth (ft-bgs) Well Casing Depth (ft-bgs) Well Yield (gpm) Well Screen Interval (ft-bgs) 113 N/A Cleveland ?Assumed Domestic 120 N/A Cleveland ?Assumed Domestic 3 N/A Rutherford 1574014840100000 Drinking 2,180 Northwest of Units 1- 4 Inactive Ash Basin 10 No data No data No data 6 N/A Rutherford 1574014813800000 Drinking 2,580 Northwest of Units 1- 4 Inactive Ash Basin 185 No data No data No data 7 N/A Rutherford 1574014718680000 Drinking 2,245 Northwest of Units 1- 4 Inactive Ash Basin 63 No data No data No data 8 N/A Rutherford 1574013873710000 Drinking 2,395 North of Unit 5 Inactive Ash Basin 32 No data No data No data 10 N/A Rutherford 1574011714680000 Drinking 2,090 North/Northwest of Unit 5 Inactive Ash No data No data No data No data 13 N/A Rutherford 1574012749110000 Drinking 2,225 North of Unit 5 Inactive Ash Basin 0 No data No data No data 16 N/A Rutherford 1574012788440000 Assumed Domestic 2,005 North of Unit 5 Inactive Ash Basin 300 No data No data No data 18 N/A Cleveland 1584181390 Not in use, municipal water available 1,765 Northeast of Active Ash Basin 30 No data No data No data 19 N/A Cleveland 1584165839 Drinking, Livestock Municipal water 2,125 Northeast of Active Ash Basin 180 No data No data No data 21 N/A Cleveland 1584161852 Irrigation, Livestock Municipal water used for Drinking 1,790 Northeast of Active Ash Basin 305 No data No data No data 22 N/A Cleveland 1584064666 Not in use, municipal water available 1,480 Northeast of Active Ash Basin No data No data No data No data 23 N/A Cleveland 1584064666 Not in use, municipal water available 1,705 Northeast of Active Ash Basin 25 No data No data No data 24 N/A Cleveland 1584153922 Drinking 1,070 East/Northeast of Active Ash Basin 205 40 20 No data 27 N/A Cleveland 1584257564 Drinking, Irrigation 2,010 East/Northeast of Active Ash Basin No data No data No data No data 28 N/A Cleveland 1584134609 Drinking 1,355 East of Active Ash Basin No data No data No data No data 39 N/A Cleveland 1584124837 Not Reported 1,410 Southeast of Active Ash Basin No data No data No data No data 40 N/A Cleveland 1584131019 Not Reported 1,125 Southeast of Active Ash Basin No data No data No data No data 41 N/A Cleveland 1574939253 Drinking, Livestock 355 Southeast of Active Ash Basin No data No data No data No data 42 N/A Cleveland 1584026974 Not Reported 960 Southeast of Active Ash Basin No data No data No data No data 43 N/A Cleveland 1584014954 Drinking, Irrigation 1,070 Southeast of Active Ash Basin 365 No data No data No data 45 N/A Cleveland 1584027007 Drinking, Irrigation 935 Southeast of Active Ash Basin 365 No data No data No data 46 N/A Cleveland 1584018688 Drinking 1,295 Southeast of Active Ash Basin 125 No data No data No data 47 N/A Cleveland 1574703017 Drinking, Swimming Pool 1,570 South of Active Ash Basin No data No data No data No data 48 N/A Cleveland 1584112161 Drinking 1,990 Southeast of Active Ash Basin 50 No data No data No data Reported Private Water Supply Wells Table 4-1. Public and Private Water Supply Wells Within 0.5-Mile Radius of Cliffside Steam Station Ash Basin Compliance Boundary Source: HDR, Comprehensive Site Assessment Report Cliffside Steam Station Ash Basin, August 18, 2015 Page 3 of 4 Map ID #Public Water System Name County Parcel ID Number Reported Well Use Approximate Distance from Ash Basin Compliance Boundary (ft) Direction from Ash Basin Well Depth (ft-bgs) Well Casing Depth (ft-bgs) Well Yield (gpm) Well Screen Interval (ft-bgs) 49 N/A Cleveland 1584113099 Drinking 2,105 Southeast of Active Ash Basin No data No data No data No data 50 N/A Cleveland 1584118001 Drinking 2,415 Southeast of Active Ash Basin 45 No data No data No data 51 N/A Cleveland 1584111163 Drinking 1,860 Southeast of Active Ash Basin 42 42 No data No data 52 N/A Cleveland 1574508003 Drinking, Swimming Pool 1,820 South of Active Ash Basin No data No data No data No data 53 N/A Cleveland 1584114479 Drinking 1,965 Southeast of Active Ash Basin 43 24 No data No data 54 N/A Cleveland 1584017663 Drinking 1,380 Southeast of Active Ash Basin 60 60 No data No data 60 N/A Cleveland 1584016093 Drinking, Irrigation 1,690 Southeast of Active Ash Basin 125 50 No data No data 61 N/A Cleveland 1574938623 Drinking, Swimming Pool 130 East of Active Ash Basin No data No data No data No data 98 N/A Cleveland 1584156894 Drinking, Irrigation 1,540 Northeast of Active Ash Basin No data No data No data No data 99 N/A Cleveland 1584110456 Not in use, municipal water available 1,640 Southeast of Active Ash Basin No data No data No data No data 100 N/A Cleveland 1574805098 Not in use, municipal water available 1,255 South of Active Ash Basin No data No data No data No data 101 N/A Cleveland 1584159607 Drinking 1,815 Northeast of Active Ash Basin 35 No data No data No data 102 N/A Cleveland 1584251714 Drinking 2,050 Northeast of Active Ash Basin 115 35 75 No data 103 N/A Cleveland 1574703542 Not in use, municipal water available 1,170 Southwest of Active Ash Basin No data No data No data No data 104 N/A Rutherford 1574001307070000 Not in use, municipal water available 850 West of Unit 5 Inactive Ash Basin No data No data No data No data 105 N/A Rutherford 1574001315920000 Not in use, municipal water available 695 West of Unit 5 Inactive Ash Basin No data No data No data No data 106 N/A Cleveland 1584110194 Drinking 1,825 Southeast of Active Ash Basin 50 No data No data No data 107 N/A Rutherford 1574000277890000 Not in use, municipal water available 1,285 Southwest of Unit 5 Inactive Ash Basin 35 35 No data No data 2 N/A Rutherford 1574005889660000 Assumed Domestic 2,330 Northwest of Units 1- 4 Inactive Ash Basin No data No data No data No data 29 N/A Cleveland 1584046582 Assumed Domestic 1,030 East of Active Ash Basin No data No data No data No data 32 N/A Cleveland 1584246222 Assumed Domestic 2,500 East of Active Ash Basin No data No data No data No data 55 N/A Cleveland 1584013421 Assumed Domestic 1,025 Southeast of Active Ash Basin No data No data No data No data 58 N/A Cleveland 1574606830 Assumed Domestic 1,610 Southwest of Active Ash Basin No data No data No data No data 59 N/A Cleveland 1573947473 Assumed Domestic 1,905 South of Active Ash Basin No data No data No data No data 111 N/A Cleveland ?Assumed Domestic 112 N/A Cleveland 54348 Assumed Domestic Assumed Private Water Supply Wells Table 4-1. Public and Private Water Supply Wells Within 0.5-Mile Radius of Cliffside Steam Station Ash Basin Compliance Boundary Source: HDR, Comprehensive Site Assessment Report Cliffside Steam Station Ash Basin, August 18, 2015 Page 4 of 4 Map ID #Public Water System Name County Parcel ID Number Reported Well Use Approximate Distance from Ash Basin Compliance Boundary (ft) Direction from Ash Basin Well Depth (ft-bgs) Well Casing Depth (ft-bgs) Well Yield (gpm) Well Screen Interval (ft-bgs) 114 N/A Cleveland ?Assumed Domestic 115 N/A Cleveland ?Assumed Domestic 116 N/A Cleveland ?Assumed Domestic 117 N/A Rutherford 914427 Assumed Domestic 118 N/A Rutherford 916148 Assumed Domestic 119 N/A Cleveland 1634370 Assumed Domestic 121 N/A Cleveland ?Assumed Domestic 122 N/A Cleveland ?Assumed Domestic 123 N/A Cleveland ?Assumed Domestic 124 N/A Cleveland 1649391 Assumed Domestic Notes: 1. Map ID #s correspond to Figures 4-1 and 4-2. 2. Owner and property address information for water supply wells obtained from the Rutherford and Cleveland counties online databases. 3. Distances between water supply wells and the ash basin compliance boundary are approximate. 4. N/A indicates not available. 5. (ft-bgs) indicates feet below ground surface. 6. (gpm) indicates gallons per minute. Source: HDR, Comprehensive Site Assessment Report Cliffside Steam Station Ash Basin, August 18, 2015 Page 1 of 1 Table 4-2. Property Owners Contiguous to the Ash Basin Waste Boundary Map ID # Parcel ID # Property Address Street City State 1 1574874298 McCombs Rd Mooresboro NC 2 1574840445 573 Duke Power Rd Mooresboro NC 3 1584053888 2978 Riverfront Dr Mooresboro NC 4 1584046582 2938 Prospect Church Mooresboro NC 5 1574840445 573 Duke Power Rd Mooresboro NC 6 1584030908 Fox Pl Mooresboro NC 7 1574938707 Fox Pl Mooresboro NC 8 1574939253 2948 Fox Pl Mooresboro NC 9 1574938623 2944 Fox Pl Mooresboro NC 10 1574937353 2950 Fox Pl Mooresboro NC 11 1574840445 573 Duke Power Rd Mooresboro NC 12 1574715846 Mccraw Rd Mooresboro NC 13 1574840445 573 Duke Power Rd Mooresboro NC 14 1574906675 2545 Prospect Church Mooresboro NC 15 1574003385730000 Duke Power Rd Mooresboro NC 16 1574003218060000 Duke Power Rd Mooresboro NC 17 1574003287840000 162/170 Waterloo Dr Mooresboro NC 18 1574003225910000 389 Duke Power Rd Mooresboro NC 19 1574014535940000 573/575 Duke Power Rd Mooresboro NC 20 1574002325950000 Duke Power Rd Mooresboro NC 21 1574001356860000 Duke Power Rd Mooresboro NC 22 1574001494870000 US 221A Hwy Mooresboro NC 23 1574002371540000 307/325 Duke Power Rd Mooresboro NC 24 1574003413170000 Duke Power Rd Mooresboro NC 25 1574012624340000 US 221A HWY Mooresboro NC Notes: 1. Property owner addresses obtained from the Cleveland and Rutherford County, NC GIS websites. 2. Map ID # corresponds to Figure 4-6. TABLE 4-3 PRIVATE WATER SUPPLY ANALYTICAL RESULTS CLIFFSIDE STEAM STATION DUKE ENERGY CAROLINAS, LLC, MOORESBORO, NC Reporting Units S.U.Deg C umhos/cm mg/L mV mV NTUs mg/L ug/L ug/L ug/L ug/L ug/L mg/L ug/L ug/L mg/L mg/L mg/L ug/L ug/L 15A NCAC 02L Standard 6.5-8.5 NE NE NE NE NE NE NE NE 1*10 700 4*NE 700 2 NE NE 250 10 10 Provisional Background Threshold Values (Bedrock Unit)5.4-7.4 NE NE NE NE NE NE 53 208.2 1 1 19.33 1 68.82 50 1 16 5 8.656 0.12 3.567 Sample ID Sample Collection Date C1 Well 2 02/04/2015 7.5 15 84 8.35 38 243 <1 12 220 <1 2.6 23 <0.4 12 <25 <0.1 9.2 <10 6.5 <20 <5 C1 Well 2 05/27/2015 6.2 17 79 1.00 218 423 1.4 17.9 <10 <0.5 <0.5 15.3 <0.2 17.9 <5 <0.08 5.73 <5 2.1 <0.6 3.2 C1 Well 3 02/04/2015 6.7 18 79 2.20 110 315 <1 21 97 <1 <1 14 <0.4 21 <25 <0.1 6.4 <10 2.6 <20 <5 C10 02/04/2015 8.0 16 124 9.14 19 224 <1 52 <40 <1 1.6 <5 <0.4 52 <25 <0.1 18 <10 2 <20 <5 C10 05/27/2015 7.0 17 132 1.70 37 242 2.2 <5 <10 <0.5 1.3 4.3 <0.2 <5 <5 <0.08 <0.04 <5 2.3 <0.6 2.3 C-1001: C2801 Riverfront 05/07/2014 NM NM NM NM NM NM NM NA <50 NA <2 21 NA NA <50 <0.5 NA NA 2.4 NA <10 C-1001: C2801 Riverfront 10/18/2016 6.4 17 112 3.00 NM NM 2.2 41.9 <10 <0.5 0.44 5.6 <0.1 41.9 <25 <0.08 14.9 <5 3.1 <0.03 <0.5 C-1002: 2901 Fox Place 10/18/2016 6.2 17 97 0.10 20 225 6.4 17.5 16.1 <0.5 0.19 1.8 <0.1 17.5 <25 <0.08 9.3 <5 4 <0.03 <0.5 C-1003 10/18/2016 7.6 18 138 0.40 NM NM <1 61.5 <10 <0.5 0.98 3.6 <0.1 61.5 <25 <0.08 16.7 <5 1.3 <0.03 <0.5 C-1004: C2800 Riverfront 05/07/2014 NM NM NM NM NM NM NM NA <50 NA <2 17 NA NA <50 <0.5 NA NA 3.9 NA <10 C-1004: C2800 Riverfront 10/18/2016 4.9 17 41 6.20 NM NM <1 10.2 <10 <0.5 <0.1 15.3 <0.1 10.2 <25 0.11 2.65 <5 3.6 0.63 1.2 C-1005 S1 10/17/2016 6.8 17 206 1.60 NM NM 1.1 107 10.7 <0.5 0.3 19.2 <0.1 107 <25 <0.08 27.1 <5 2.9 <0.03 <0.5 C-1005 S2 10/17/2016 6.1 17 64 5.90 NM NM 5.2 29 167 <0.5 0.17 12.8 <0.1 29 <25 <0.08 7.56 <5 2.1 0.32 0.79 C-1005 S5 10/18/2016 6.9 17 184 5.70 NM NM 4.1 5.2 64.8 <0.5 <0.1 31.3 <0.1 5.2 82 <0.08 3.24 <5 13.4 <0.15 <0.5 C-1005 W1 10/17/2016 5.3 16 31 6.00 NM NM <1 8.3 <10 <0.5 <0.1 9.2 <0.1 8.3 <25 <0.08 1.88 <5 2.5 0.13 <0.5 C-1005 W2 10/17/2016 6.1 20 105 1.40 NM NM <1 39.8 21.1 <0.5 0.56 21.4 <0.1 39.8 <25 <0.08 12.5 <5 3.7 <0.03 <0.5 C-1005 W3 10/17/2016 7.0 17 133 0.00 NM NM <1 59.2 14 <0.5 <0.1 9.2 <0.1 59.2 <25 <0.08 15.3 <5 2.1 <0.03 <0.5 C-1006: 2910 Fox Place 11/03/2016 7.3 17 127 0.40 -55 151 <1 51 <10 <0.5 0.28 4.4 <0.1 51 <25 <0.08 13.8 <5 1.8 0.026 <0.5 C-1007: 433 Dysart Place 11/03/2016 7.4 15 155 0.05 -124 82 <1 63.7 <10 <0.5 0.23 2.7 <0.1 63.7 <25 <0.08 22.1 <5 1.5 <0.12 <0.5 C-1007: 433 Dysart Place 03/31/2017 7.4 16 158 0.20 -116 89 1.2 65.2 <10 <0.5 0.25 3.2 <0.1 65.2 <25 <0.08 22.9 <5 1.7 <0.025 0.88 C-1008 11/03/2016 5.2 15 48 6.94 NM NM <1 <5 48.9 <0.5 <0.1 49.8 0.13 <5 <25 <0.08 1.46 <5 3.1 <0.025 <0.5 C105 Downriver 04/09/2014 5.4 NM NM NM NM NM 1 59 <50 NA <2 12 NA 59 <50 <0.5 NA <10 2.3 NA <10 C11 05/01/2015 6.6 16 169 7.80 153 358 4.2 56.6 518 <0.5 <0.5 55.5 <0.2 <5 <5 <0.08 22.5 <5 5.6 0.096 <0.5 C15 02/04/2015 8.0 14 428 3.65 13 218 2.3 180 79 <1 1 130 <0.4 180 <25 <0.1 56 <10 14 <20 <5 C16 02/04/2015 6.6 16 81 7.33 160 365 4.9 11 300 <1 <1 55 <0.4 11 <25 <0.1 6.1 <10 5.4 <20 <5 C19 02/04/2015 7.7 14 69 8.44 72 277 2.4 12 83 <1 <1 36 <0.4 12 <25 <0.1 6.2 <10 4.6 <20 <5 C23 05/27/2015 6.9 18 114 8.10 268 473 1.1 43.8 46 <0.5 <0.5 25.3 <0.2 43.8 <5 <0.08 11.6 <5 2.7 0.83 1.5 C24 05/27/2015 6.4 17 195 7.10 191 396 <1 49.6 48.8 <0.5 <0.5 159 0.22 49.6 <5 <0.08 22 <5 5.7 <0.6 0.91 Field Parameters Alkalinity AluminumpHTemp Specific Cond DO ORP Eh Turbidity Analytical Results Boron Cadmium Chromium (VI)ChromiumAntimonyArsenicBariumBeryllium Bi- carbonate Alkalinity Analytical Parameter Calcium ChlorideCarbonate Alkalinity P:\Duke Energy Carolinas\21. CLIFFSIDE\CSA Update\Tables\Table 4-3 Private Water Supply Analytical Results.xlsx Page 1 of 4 TABLE 4-3 PRIVATE WATER SUPPLY ANALYTICAL RESULTS CLIFFSIDE STEAM STATION DUKE ENERGY CAROLINAS, LLC, MOORESBORO, NC Reporting Units ug/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 mg/L ug/L mg/L mg/L ug/L ug/L 15A NCAC 02L Standard 1*1000 300 15 NE 50 1 NE 100 NE 20 NE NE 250 0.2*500 NE 0.3*1000 Provisional Background Threshold Values (Bedrock Unit)1.497 5 6220 1 2.328 89.4 0.2 1.716 5 5 1 7.42 107.1 15.1 0.2 120 NE 0.37 10 Sample ID Sample Collection Date C1 Well 2 02/04/2015 <5 10 540 <1 1.1 7.6 <0.1 <10 <5 1.5 <1 4.2 26 13 NA 42 1.7 <5 <10 C1 Well 2 05/27/2015 <0.5 12.9 218 0.74 1.67 13.1 <0.2 <0.5 2.9 2.49 <0.5 4.47 50.1 9 NA 53 <2.5 <1 18.2 C1 Well 3 02/04/2015 <5 30 210 <1 2 11 <0.1 <10 <5 2.6 <1 4.6 48 8.5 NA 60 <1 <5 32 C10 02/04/2015 <5 1.5 650 <1 2.3 42 <0.1 <10 <5 2.5 <1 5.2 39 8.1 NA 54 <1 <5 <10 C10 05/27/2015 <0.5 2 <50 <0.1 1.75 49.6 <0.2 <0.5 1.6 <0.05 <0.5 <0.05 38.2 7.6 NA 79 <2.5 <1 <5 C-1001: C2801 Riverfront 05/07/2014 NA 5.5 78 2 NA NA <0.2 NA 2 1.9 NA NA 33 2 NA NA NA NA 83 C-1001: C2801 Riverfront 10/18/2016 0.18 5.6 289 0.23 1.67 47.3 <0.2 <0.5 0.93 2 <0.5 4.23 36.3 5.9 NA 62 <2.5 <0.3 15.7 C-1002: 2901 Fox Place 10/18/2016 0.46 2.1 2970 0.4 1.8 27.6 <0.2 <0.5 1.8 2.32 <0.5 3.28 30.1 15.3 NA 63 <2.5 <0.3 16.8 C-1003 10/18/2016 <0.1 0.63 <50 <0.1 3.02 8.3 <0.2 0.65 <0.5 2.36 <0.5 6.73 65.1 6.1 NA 108 <2.5 <0.3 <5 C-1004: C2800 Riverfront 05/07/2014 NA 37 <50 3.3 NA NA <0.2 NA 2 1.3 NA NA 20 NA NA NA NA NA 11 C-1004: C2800 Riverfront 10/18/2016 <0.1 53 <50 3 1.28 1.5 <0.2 <0.5 <0.5 1.24 <0.5 2.17 20.4 <2 NA 27 <2.5 <0.3 28.5 C-1005 S1 10/17/2016 0.15 <0.5 311 <0.1 8.63 23.5 <0.2 <0.5 <0.5 1.64 <0.5 2.53 41.1 2.9 NA 108 <2.5 0.64 <5 C-1005 S2 10/17/2016 <0.1 <0.5 161 0.18 2.14 5.4 <0.2 <0.5 <0.5 1.46 <0.5 2.06 20.5 <2 NA 36 <2.5 1.1 <5 C-1005 S5 10/18/2016 0.41 <0.5 483 0.24 2.3 56.9 <0.2 <0.5 0.73 1.5 <0.5 2.86 26.4 <2 NA 34 11.6 0.41 <5 C-1005 W1 10/17/2016 <0.1 3.8 <50 0.28 0.769 1.5 <0.2 <0.5 <0.5 1.19 <0.5 2.31 15.6 2.3 NA 31 <2.5 <0.3 <5 C-1005 W2 10/17/2016 0.41 1.4 392 0.18 3.44 59.1 <0.2 <0.5 0.53 1.63 <0.5 2.54 54 5.8 NA 65 <2.5 1.1 <5 C-1005 W3 10/17/2016 <0.1 3.2 754 0.59 1.92 34.9 <0.2 <0.5 <0.5 3.09 <0.5 9.03 54.5 5.9 NA 92 <2.5 <0.3 <5 C-1006: 2910 Fox Place 11/03/2016 <0.1 1.4 81.6 0.16 3.65 14.3 <0.2 0.73 <0.5 2.36 <0.5 5.51 50.9 10.3 NA 104 <5 <0.3 <5 C-1007: 433 Dysart Place 11/03/2016 <0.1 <0.5 455 <0.1 1.46 166 <0.2 2.2 <0.5 2.01 <0.5 8.15 59.3 12.7 NA 98 <2.6 <0.3 <5 C-1007: 433 Dysart Place 03/31/2017 <0.1 0.52 453 0.11 1.55 173 <0.2 2.3 <0.5 2.05 <0.5 7.89 61.5 12 NA 115 <2.5 <0.3 <5 C-1008 11/03/2016 0.65 7.2 <50 0.7 1.5 12.3 <0.2 <0.5 0.76 2.22 <0.5 3.91 18.4 <2 NA <25 <2.5 <0.3 9.2 C105 Downriver 04/09/2014 NA 2.3 320 2 NA NA <0.2 NA 5.3 3.3 5 NA NA 6.8 NA 99 NA NA 10 C11 05/01/2015 <0.5 3.1 <50 0.31 <0.05 3 <0.2 <0.5 <0.5 <0.05 <0.5 5.29 39.3 <2 NA <25 <2.5 <1 <5 C15 02/04/2015 <5 2.7 2200 <1 7.6 230 <0.1 <10 9.3 14 <1 9.2 140 11 NA 190 4 <5 <10 C16 02/04/2015 <5 1.9 380 <1 2.1 <5 <0.1 <10 <5 3.5 <1 3.4 30 2.6 NA 38 1 <5 16 C19 02/04/2015 <5 14 240 <1 1.9 <5 <0.1 <10 <5 3.1 <1 2 33 2.5 NA 25 2.1 <5 15 C23 05/27/2015 <0.5 5 110 0.23 5.1 3.1 <0.2 <0.5 0.8 1.12 <0.5 1.81 15.7 <2 NA 44 <2.5 <1 <5 C24 05/27/2015 1.9 <1 <50 <0.1 5.3 40.3 <0.2 <0.5 4.7 3.32 <0.5 2.88 71.4 2.2 NA 106 <2.5 <1 28.4 Iron Lead MagnesiumCopper Vanadium ZincMercuryMolybdenumNickel Analytical Results Total Suspended Solids Total Dissolved Solids Strontium SulfatePotassiumSeleniumSodium ThalliumCobaltAnalytical Parameter Manganese P:\Duke Energy Carolinas\21. CLIFFSIDE\CSA Update\Tables\Table 4-3 Private Water Supply Analytical Results.xlsx Page 2 of 4 TABLE 4-3 PRIVATE WATER SUPPLY ANALYTICAL RESULTS CLIFFSIDE STEAM STATION DUKE ENERGY CAROLINAS, LLC, MOORESBORO, NC Reporting Units S.U.Deg C umhos/cm mg/L mV mV NTUs mg/L ug/L ug/L ug/L ug/L ug/L mg/L ug/L ug/L mg/L mg/L mg/L ug/L ug/L 15A NCAC 02L Standard 6.5-8.5 NE NE NE NE NE NE NE NE 1*10 700 4*NE 700 2 NE NE 250 10 10 Provisional Background Threshold Values (Bedrock Unit)5.4-7.4 NE NE NE NE NE NE 53 208.2 1 1 19.33 1 68.82 50 1 16 5 8.656 0.12 3.567 Sample ID Sample Collection Date Field Parameters Alkalinity AluminumpHTemp Specific Cond DO ORP Eh Turbidity Analytical Results Boron Cadmium Chromium (VI)ChromiumAntimonyArsenicBariumBeryllium Bi- carbonate Alkalinity Analytical Parameter Calcium ChlorideCarbonate Alkalinity C24 08/18/2015 6.3 17 170 3.70 175 380 1 42.3 11 <0.5 <0.5 49.8 <0.2 42.3 <50 <0.08 NA <5 4.8 0.44 <5 C24-1 05/27/2015 6.7 17 169 6.20 NM NM <1 55.4 11.4 <0.5 <0.5 48.8 <0.2 55.4 <5 <0.08 23.4 <5 4.6 0.63 0.88 C25 05/27/2015 6.5 16 62 4.40 242 447 3.9 16.3 <10 <0.5 <0.5 5.4 <0.2 16.3 <5 <0.08 4.04 <5 1.4 <0.6 14.1 C25 08/17/2015 6.4 17 58 3.70 11 216 1.2 18.2 10 <0.5 <0.5 4.7 <0.2 18.2 <50 <0.08 NA <5 1.3 0.11 <0.5 C26 05/27/2015 6.1 18 64 8.20 234 439 <1 17.3 38.3 <0.5 <0.5 4.9 <0.2 17.3 5.6 <0.08 5.3 <5 4.1 <0.6 0.81 C26 08/17/2015 6.2 19 69 9.50 93 298 1.5 23.1 24 0.5 <0.5 4.2 <0.2 23.1 <50 <0.08 NA <5 2.5 0.15 <0.5 C2968 Riverfront 04/09/2014 NM NM NM NM NM NM 5.6 NA <50 NA NA 10 NA NA <50 <50 16 NA 2.3 NA <10 C3 02/04/2015 7.2 11 113 3.83 59 264 <1 42 <40 <1 <1 13 <0.4 42 <25 <0.1 12 <10 2.7 <20 <5 C3 05/27/2015 6.5 18 98 4.20 196 401 <1 <5 12.8 <0.5 <0.5 19 <0.2 <5 5 <0.08 8.89 <5 3.6 <0.6 0.56 C4 Well 2 02/04/2015 7.0 15 32 8.09 NM NM 1.2 <10 <40 <1 <10 9.6 <0.4 <10 <25 <1 1.5 <10 2.4 <20 <50 C5 05/01/2015 6.6 15 121 5.10 410 615 <1 51.8 38.1 <0.5 <0.5 24.9 <0.2 <5 6.2 <0.08 <0.04 <5 5.5 2.2 2.2 C7 05/01/2015 7.6 17 125 0.60 306 511 <1 59.7 79.9 <0.5 1.3 3.7 <0.2 <5 <5 <0.08 <0.04 <5 1.4 <0.03 <0.5 C8 05/01/2015 6.2 16 106 7.50 212 417 <1 <5 <10 <0.5 <0.5 32.5 <0.2 <5 <5 <0.08 8.56 <5 4.3 0.74 0.86 C9A 05/01/2015 5.7 15 34 6.40 248 453 <1 7.3 <10 <0.5 <0.5 8.2 <0.2 7.3 6.2 <0.08 <0.04 <5 2.2 0.1 <0.5 C9B 05/01/2015 7.1 16 134 0.10 -93 112 <1 <5 <10 <0.5 <0.5 8.2 <0.2 <5 <5 <0.08 <0.04 <5 1.9 <0.03 <0.5 Prepared by: KDF Checked by: TCP Notes: - Bold highlighted concentration indicates exceedance of the 15A NCAC 02L Standard, Appendix 2, April 1, 2013. * - Interim Maximum Allowable Concentrations (IMACs) of the 15A NCAC 02L Standard, Appendix 1, April, 1, 2013. < - concentration not detected at or above reporting limit ug/l - microgram per liter Deg C - Degree Celsius Temp - Temperature mg/l - milligrams per liter DO - Dissolved Oxygen NM - Not Measured umhos/cm - micro mhos per centimeter ORP - Oxidation Reduction Potential NA - Not Analyzed NTU - Nephelometric Turbidity Unit Spec Cond - Specific Conductance NE - Not Established S.U. - Standard Unit Eh - Redox Potential mg-N/L - milligram nitrogen per liter mV - millivolts DIS - Dissolved TOT - Total P:\Duke Energy Carolinas\21. CLIFFSIDE\CSA Update\Tables\Table 4-3 Private Water Supply Analytical Results.xlsx Page 3 of 4 TABLE 4-3 PRIVATE WATER SUPPLY ANALYTICAL RESULTS CLIFFSIDE STEAM STATION DUKE ENERGY CAROLINAS, LLC, MOORESBORO, NC Reporting Units ug/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 mg/L ug/L mg/L mg/L ug/L ug/L 15A NCAC 02L Standard 1*1000 300 15 NE 50 1 NE 100 NE 20 NE NE 250 0.2*500 NE 0.3*1000 Provisional Background Threshold Values (Bedrock Unit)1.497 5 6220 1 2.328 89.4 0.2 1.716 5 5 1 7.42 107.1 15.1 0.2 120 NE 0.37 10 Sample ID Sample Collection Date Iron Lead MagnesiumCopper Vanadium ZincMercuryMolybdenumNickel Analytical Results Total Suspended Solids Total Dissolved Solids Strontium SulfatePotassiumSeleniumSodium ThalliumCobaltAnalytical Parameter Manganese C24 08/18/2015 <0.5 1 <50 0.1 1.96 NA <0.2 <0.5 0.86 3.14 0.5 NA 60.8 2 NA 101 <2.5 <1 5 C24-1 05/27/2015 <0.5 1.2 <50 0.18 1.76 2.7 <0.2 <0.5 0.83 <0.05 <0.5 <0.05 58.2 2.9 NA 90 <2.5 <1 <5 C25 05/27/2015 <0.5 2.4 540 0.93 0.973 3.6 <0.2 0.93 6.4 1.53 <0.5 5.04 28 5.6 NA 53 <2.5 <1 16.4 C25 08/17/2015 <0.5 2.5 <50 0.14 1.01 NA <0.2 0.64 0.52 1.58 0.5 NA 28.2 4.8 NA 54 2.6 <1 32 C26 05/27/2015 <0.5 4.4 188 0.23 0.727 2.7 <0.2 <0.5 <0.5 1.72 <0.5 5.11 26 3.5 NA 41 <2.5 <1 9.6 C26 08/17/2015 <0.5 6.2 52.5 0.11 0.81 NA <0.2 <0.5 0.5 1.82 0.5 NA 27.1 3 NA 61 <2.5 <1 37.7 C2968 Riverfront 04/09/2014 NA <2 790 <2 2 33 <0.2 NA <2 3 <5 8.5 NA 2 NA 101 NA NA <10 C3 02/04/2015 <5 3.3 360 <1 1.2 20 <0.1 <10 <5 1.4 <1 10 51 4.8 NA 48 <1 <5 <10 C3 05/27/2015 1.2 6.3 <50 1.2 1.34 25.5 <0.2 <0.5 2.7 <0.05 <0.5 7.25 44 4.4 NA 36 <2.5 <1 6.7 C4 Well 2 02/04/2015 <50 <10 290 <1 0.88 <50 <0.1 <100 <50 1.2 <10 1.7 <100 2.3 NA <10 <1 <50 <100 C5 05/01/2015 <0.5 7.2 <50 0.29 2.34 1 <0.2 <0.5 0.69 <0.05 <0.5 <0.05 20.2 2.3 NA 80 <2.5 <1 6.6 C7 05/01/2015 <0.5 1.1 <50 0.11 2.75 7.9 <0.2 0.61 0.54 <0.05 <0.5 6.66 60.6 6.5 NA 94 <2.5 <1 <5 C8 05/01/2015 0.72 9.3 57.3 0.43 4.67 11 <0.2 <0.5 1.4 <0.05 <0.5 <0.05 16 <2 NA 59 <2.5 <1 8 C9A 05/01/2015 <0.5 2.9 <50 0.3 0.739 2.3 <0.2 <0.5 0.63 <0.05 <0.5 <0.05 14.1 2.6 NA 32 <2.5 <1 <5 C9B 05/01/2015 <0.5 <1 749 0.53 1.72 32.4 <0.2 <0.5 <0.5 <0.05 <0.5 8.05 48.9 6.2 NA 97 <2.5 <1 <5 Prepared by: KDF Checked by: TCP Prepared by: KDF Checked by: TCP Notes: - Bold highlighted concentration indicates exceedance of the 15A NCAC 02L Standard, Appendix 2, April 1, 2013. * - Interim Maximum Allowable Concentrations (IMACs) of the 15A NCAC 02L Standard, Appendix 1, April, 1, 2013. < - concentration not detected at or above reporting limit ug/l - microgram per liter Deg C - Degree Celsius Temp - Temperature mg/l - milligrams per liter DO - Dissolved Oxygen NM - Not Measured umhos/cm - micro mhos per centimeter ORP - Oxidation Reduction Potential NA - Not Analyzed NTU - Nephelometric Turbidity Unit Spec Cond - Specific Conductance NE - Not Established S.U. - Standard Unit Eh - Redox Potential mg-N/L - milligram nitrogen per liter mV - millivolts DIS - Dissolved TOT - Total P:\Duke Energy Carolinas\21. CLIFFSIDE\CSA Update\Tables\Table 4-3 Private Water Supply Analytical Results.xlsx Page 4 of 4 TABLE 4-4 PIEDMONT GROUNDWATER BACKGROUND THRESHOLD VALUES CLIFFSIDE STEAM STATION DUKE ENERGY CAROLINAS, LLC and DUKE ENERGY PROGRESS, LLC P:\Duke Energy Carolinas\21. CLIFFSIDE\CSA Update\Tables\Table 4-4 Piedmont Groundwater Background Threshold Values_hhs Page 1 of 1 Allen Belews Creek Cliffside Marshall Mayo Riverbend Shallow Deep†Bedrock†Alluvium†Saprolite Transition Zone Bedrock Shallow Deep†Bedrock†Shallow Deep Bedrock Surficial Bedrock Shallow Deep†Bedrock†Shallow†Deep Bedrock†Shallow Deep†Bedrock†Surficial† Transition Zone Bedrock Shallow Deep†Bedrock†Transition Zone Bedrock pH*S.U.6.5-8.5 5.2 - 7.5 6.7 - 8.4 7.5 - 7.8 4.6 - 5.1 4.3 - 5.8 3.9 - 7.0 4.1 - 8.1 5.1 - 6.0 5.2 - 7.0 6.3 - 6.5 4.5 - 6.4 5.9 - 8.4 5.8 - 7.8 5.8 - 6.4 5.5 - 8.2 4.4 - 6.1 4.8 - 6.1 5.4 - 7.4 4.0 - 7.1 5.3 - 6.8 6.7 - 8.4 4.8 - 6.1 5.8 - 7.9 5.9 - 7.1 4.9 - 6.5 5.7 - 6.5 5.0 - 7.3 4.9 - 7.0 5.4 - 8.2 7.6 - 7.8 6.3 - 7.6 6.8 - 8.3 Alkalinity mg/L NE 189 74 83.4 10.9 14.2 14.8 70.4 22.9 63.7 81.3 117 80 72 206 237 13.7 19.7 53 77.7 168 236 29.7 238 108 13 302 223 82.1 139 139 244 317 Aluminum µg/L NE 427 540 301 73 602 346 199 860 140 100 273 404 240 323 118 253 290 208 118 113 100†926 190 463 566 490 494 178 122 100 807 378 Antimony µg/L 1∆0.9 0.7 0.5 1 1 1 1 1 1 0.5 1 1 1 1 1 1 1 1 0.5 0.5 0.5 1 0.5 1 1 1 1 1 1.1 2.9 1 1 Arsenic µg/L 10 0.42 1.4 0.4 1 1 1 1 1 1 0.51 1 1 1 3 6 1 1.3 1 0.5 1.62 0.833 0.219 1.5 1 1 1 1 1 1 2.9 1 1 Barium µg/L 700 125 52.4 21 59 143 41 41.2 58 12.6 6.2 44 19 91 183 471 73 23 19.3 19 80.4 128 148 45.5 66.9 19 78.3 97 42.1 84.4 135 91 185 Beryllium µg/L 4∆0.127 0.2 0.1 1 1 1 1 0.362 0.219 0.2 0.1 1 0.2 1 1 0.188 0.2 1 0.429 0.0772 0.0525 0.374 0.0759 1 1 1 1 0.144 1 0.1 1 1 Bicarbonate mg/L NE 189 74 83.4 10.9 14.2 14.8 70.4 22.3 62.9 77.6 92 84 72 206 235 14.4 18.1 68.8 77.7 168 233 30.8 238 108 13 302 223 82.1 147 139 244 317 Boron µg/L 700 50 50 50 50 50 50 50 50 50 50 50 50 50 177 50 50 50 50 50 50 50.9 50 50 50 50 50 50 50 50.0 50 50 50 Cadmium µg/L 2 0.08 0.08 0.08 1 1 1 1 1 1 0.08 1 1 1 1 1 1 1 1 0.08 0.08 0.08 0.08 0.08 1 1 1 1 0.08 0.1 0.08 1 1 Calcium mg/L NE 20 14.2 20.4 2.67 10.6 3.97 24.2 3.69 13.2 10.3 13 14 13 82.6 62.6 3.22 11 16 19.4 59 59.1 6.05 62 13.7 2.89 59.2 73.3 18.8 32.9 46.7 106 102 Carbonate mg/L NE 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 Chloride mg/L 250 10.9 6 1.6 15 14 6.7 6.5 15 20.9 3 8 4 5 250 220 7.7 5.1 8.66 7.3 6.8 7.1 4.3 5.19 2.7 3.3 33.3 43 3.34 10.7 16 150 120 Chromium (VI)µg/L 10 7.7 1.2 0.23 0.42 1.31 0.261 0.423 1.75 0.411 0.33 2.4 0.5†1.3 0.12 0.03 0.452 0.16 0.12 0.5 1.24 0.15†1.74 1.48 4.82 0.088 1.26 0.4 1.0 1.2†0.16 16.1 0.19 Chromium µg/L 10 6.93 6.8 5.6 5 5 1.32 1.3 4.72 3.3 5.3 5 5 4 1 1 3.97 1.79 3.57 1.26 3.42 8.31 4.82 2.55 5 3.23 6 7 5 5 1.5 18.1 3.61 Cobalt µg/L 1∆4.3 0.5 0.27 4.29 5.65 4.61 1 0.509 1.6 0.76 8 0.3 0.3 89 1 10.7 9.04 1.5 2.4 0.85 1 3.7 2.4 3.80 1.02 1 1.14 14.2 0.547 0.088 1 6.4 Copper µg/L 1000 2.3 1.7 1.2 5 5 2.08 1 2.7 5 9.7 4 5 5 4 1 6.57 9.45 5 2.67 2.29 13 3.13 3.78 5 1.9 5 5 5 5 0.5 10 1 Iron µg/L 300 835 555 284 598 1050 1785 1246 750 240 228 647 500 147 37500 910 765 560 6220 152 2130 1400 818 337 676 385 1319 2550 593 56.3 125 1173 4268 Lead µg/L 15 0.17 0.1 0.1 1 1 1 1 1 1 0.11 1 1 1 1 1 1 1 1 0.1 0.13 1.4 0.650 0.348 1 1 1 1 0.151 0 0.1 1 1 Magnesium mg/L NE 5.6 4.6 4.8 3.06 8.7 3.31 3.38 3.41 6.94 3.35 9 6 8 32.5 30.8 2.48 1.6 2.33 12.2 15.9 20.7 1.52 8.72 13.6 0.753 13.5 13.1 3.49 6.81 7.46 42.3 31.5 Manganese µg/L 50 578 60.4 39.1 363 725 380 105 27.9 55 9.9 198 7 7 9170 901 169 78.3 89.4 81.2 522 38.8 82 187 310 253 298 519 478 7.9 24.5 405 1198 Mercury µg/L 1 0.2 2.4 0.2 0.1 0.3 0.2 0.05 0.2 0.2 0.2 0.05 0.05 0.05 0.05 0.05 0.2 0.2 0.2 0.2 0.2 0.2 0.05 0.2 0.05 0.2 0.2 0.05 0.5 0.2 0.2 0.05 0.05 Methane µg/L NE 11.4 38.9 10 230 10 10 10 2.65 2.64 10 10 10†10 10 25 10 3.15 10 10 10 233†10 10 16.4 12 2256 10 29.5 6.41†41.7 10 367 Molybdenum µg/L NE 0.85 30 4.7 1 1 1 3.7 1 1.3 3.7 1 2†5.9 1 12 1 1 1.72 0.5 0.927 1.4 0.684 9 4.26 3.15 1 11.0 2.1 7.3 10 4.17 35.2 Nickel µg/L 100 4.02 8.1 3.4 5 10 9.83 1.77 4.26 4.67 3.2 7 5 5 78 2 6.26 12.6 5 2.88 3.65 19.2 5.94 7.33 5 3.03 5 5 5 5 0.87 5.22 2.11 Nitrate + Nitrite mg-N/L NE 1.8 0.94 0.41 0.113 2.8 0.872 0.422 3.63 4.19 0.17 0.4 2†0.9 2 2 8.84 2.8 0.92 0.53 0.349 0.074 1.6 0.895 0.381 0.798 0.295 1.06 0.23 0.15†0.02 3.4 0.295 Potassium mg/L NE 5.24 9.89 6.06 1.55 1.61 1.87 4.79 5 5 5.15 5 7 7 1.61 2.49 5 5 5 5 5 5 5 4.45 8.19 3.78 3.61 6.56 5 5 4.57 4.69 9.28 Selenium µg/L 20 0.5 0.5 0.5 1 1.88 1 1 0.5 0.5 0.5 1 1 1 1 2 1 1 1 0.5 0.5 0.5 0.5 0.5 1 1 1 1 0.5 1.3 0.5 1.78 1 Sodium mg/L NE 15.2 28.3 7.71 6.18 4.06 4.20 9.01 5.92 10.7 12 8 13 9.8 190 72.5 6.14 4.41 7.42 17.3 17.8 19.2 9.75 39.9 14 5.49 53.3 73.3 12.6 17 23.7 36 37.6 Strontium µg/L NE 286 200 106 28 44 37.7 88 56.5 68.5 100 108 146 98.5 994 806 36.7 56.1 107 211 481 2120 261 548 195 25 391 418 254 697 961 760 232 Sulfate mg/L 250 3.64 16.2 2.9 4.6 50 5.47 5.6 1.93 6.35 9.6 3 7 2 510 96 1.17 10 15.1 36.7 36.7 11.3 1.9 50.3 14.4 1.6 7.5 18 1.2 21.9 29 37 73.5 Sulfide mg/L NE 0.1 0.12 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1†0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.10 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1†2 0.1 0.1 TDS mg/L 500 181 126 147 56 105 72.8 132 84.8 148 133 212 130 145 1200 675 75.5 71 120 187 244 284 79.8 221 177 85 430 340 50 179 223 540 530 Thallium µg/L 0.2∆0.1 0.1 0.1 0.2 0.2 0.2 0.2 0.2 0.2 0.1 0.2 0.2 0.2 0.2 0.2 0.117 0.063 0.2 0.1 0.1 0.1 0.2 0.1 0.2 0.2 0.2 0.2 0.2 0.2 0.1 0.2 0.2 TOC mg/L NE 18 11 5.6 0.72 0.708 0.595 1.1 1 1 10.2 1.1 1†1.6†6.3 1.3 1 1 1 1†1†1†1 4†1†2 1.8 1.24 1† 1†1 2.72 3.6 Vanadium µg/L 0.3∆5.3 9.6 10.8 0.3 0.625 0.41 0.632 1.36 1.45 0.82 7.69 8.42 14.1 1 2 1.06 1.1 0.37 0.413 0.645 2.52 4.50 4.37 22.9 0.974 5.88 5.67 2.02 12.00 0.33 30.2 2.49 Zinc µg/L 1000 80 17.3 15.3 22 45.4 27.6 5 10 43.2 16 26 10 17 62 5 15 15 10 46.3 10 16†15.9 31.1 10 227 12 37.4 15 10 10 12 7 Radium (Total)pCi/L NE 1.39 0.613 1.1 4.17 6.83 6.61†6.55 8.74 1.1 0.466 1.61 0.609†1.56†3.60 3.46 2.58†1.51†3.1†1.45 1.38 1.63†0.47†NA 1.9 4 9†7.6 0.825† ---0.494 5.45 5.21 Uranium (Total)µg/mL NE 0.002 0.0005 0.0004 0.00035 0.00035 0.000402†0.000454 0.0005 0.0005 0.0005 0.0005 0.0005†0.0005†0.0167 0.00196 0.0005 0.0005 0.0005 0.005 0.00106 0.002†0.0005 NA 0.0005 0.000367 0.001†0.00203 0.0005† 0.864†0.001 0.00516 0.00324 Notes:Prepared By: HHS Checked By: ALA * - Upper and lower tolerance limits calculated for parameter NE - Not Established ∆ - Interim Maximum Allowable Concentrations (IMACs) of 15A NCAC .02L Standard, Appendix 1, April 1, 2013 pCi/L - picocuries per liter µg/L - micrograms per liter Radium (Total) - Radium-226 and Radium-228 combined µg/mL - micrograms per milliliter S.U. - Standard Unit † - Provisional; dataset contains less than 10 valid samples TDS - Total Dissolved Solids mg/L - milligrams per liter Uranium (Total) - Uranium-233, Uranium-234, Uranium-236, and Uranium-238 combined Dan River RoxboroCape Fear Parameter Reporting Unit NCAC 02L Standard Asheville Buck Source: HDR, Comprehensive Site Assessment Report Cliffside Steam Station Ash Basin, August 18, 2015 Page 1 of 1 Table 6-1. Soil Mineralogy Results Quartz Feldspars K-Plagioclase Mullite Kaolinite Chlorite Epidote Gibbsite Amphibole Pyrite Muscovite Magnesioferrite Illite Dolomite Goethite Hematite Magnetite Gypsum Muscovite/Illite Biotite Ilmenite Amorphous IB-2S/SL American Assay CS-05 42 14.2 5.2 ----9.7 -2 1.4 -20.4 -47.1 --------- AB-6S American Assay CS-06 17 11.9 1.2 --13.4 6.2 -----33.2 -34 --------- U5-3D American Assay CS-07 40.0-45.0 18.7 2.6 ----10.3 -3 2.1 -25.6 0.3 37.4 --------- GWA-10S American Assay CS-08 25.0-29.0 16.8 2 ----0.1 -0.1 1 -15 -68.7 --------- BG-1D American Assay CS-09 35 12.3 1.2 ---7.4 -----29 -52.3 --------- AS-5S American Assay CS-10 39.0-44.0 15.1 8.5 ---9.9 --0.3 --16.7 -49.6 --------- U5-3D American Assay CS-11 25.0-27.0 13.1 3.8 ---14.7 4.1 -0.8 --23 -40.4 --------- GWA-5S American Assay CS-12 19.0-28.0 11.4 8.2 ---12.4 2.9 -1 4.9 -4.9 -54.5 --------- AB-3S American Assay CS-13 40 42.6 25.9 --19.9 5.5 --0.2 ----6.8 --------- MW-30S American Assay CS-14 43.0-48.0 11.6 1.9 ---16.6 --1.2 --25.6 -43 --------- IB-3B PMET CS-15 49.0-51.0 28.9 -6.1 2.7 -21.5 --3.4 -----0.8 1.6 --0.5 10.2 0.5 -23.8 AB-10 PMET CS-16 109 41.4 -6.2 0.1 -19.9 --4.5 -----0.4 2.3 ---15.5 --9.7 AB-1D PMET CS-18 119 41.9 -3.1 1.4 -15 --3.9 -----0.4 2.3 ---19.1 --12.9 AS-15B PMET CS-19 95.0-100.0 36 -12.9 0.5 -13 --1.7 -0.1 ---0.9 1.8 --0.5 13.1 --19.5 U5-2S PMET CS-20 60.0-62.0 8.4 ---18 -----------1.4 0.8 -0 --71.4 GWA-20S PMET CS-21 17.0-19.0 39.9 -5.6 5 -14.6 --3.8 1.5 ----0.6 2 ---12.9 2.1 0.3 11.7 GWA-33S PMET CS-22 10.0-15.0 48.2 -4.7 7 -14 ---------1.5 ---4.4 8 -12.2 GWA-2S PMET CS-23 18.0-21.0 43.3 -3.2 4.6 -5.8 --2.5 ------1 ---15.3 3.9 -20.4 GWA-30S PMET CS-24 27.5 31.3 -17.1 7 -11.4 ---------1.5 ---13.5 7.8 -10.4 GWA-24S PMET CS-28 20.0-25.0 47.3 --5 -3.1 -1.8 0.6 ----------23.7 3.4 0.4 14.7 MW-22BR PMET CS-29 41.0-43.0 62 --1.5 -1.9 -1.3 1.1 ----------22.7 -0.3 9.2 Notes: 1. PMET results distinguished between potassium-feldspar ('K-Feldspar') and plagioclase, while American Assay reported total feldspars 2. Potassium Feldspar (‘K-Feldspar’) is a subclass of Alkali Feldspar . 3. Chemical composition of constituent minerals is as follows: Quartz – SiO2, Potassium Feldspar – (K,Na)[AlSi3O8], Plagioclase – Na[AlSi3O8]-Ca[Al2Si2O8], Mullite – 3Al2O3•2SiO2, Kaolinite – Al4[Si4O10](OH)8, Chlorite – (Mg,Al,Fe)12[(Si,Al)8O20](OH)16, Epidote – Ca2Fe+3Al2O•OH•Si2O7•SiO4, Gibbsite – Al(OH)3, Pyrite – FeS2, Muscovite – K2Al4[Si6Al2O20](OH,F)4, Magnesioferrite – MgFe2+3O4, Illite – K1-1.5Al4[Si7-6.5Al1-1.5O20](OH)4, Dolomite – CaMg(Co3)2, Goethite – α-FeO•OH, Hematite - α-Fe2O3, Magnetite – Fe+2Fe2+3O4, Gypsum – CaSO4•2H2O, Biotite – K2(Mg,Fe+2)6-4(Fe+3,Al,Ti)0-2[Si6-5Al2-3O20](OH,F)4, Ilmenite – FeTiO3 4. ft bgs = feet below ground surface Sample Depth (ft bgs)Soil Mineralogical Composition (wt %)Boring ID Lab Performing Analysis Unique Lab Identifier TABLE 6-2 CHEMICAL PROPERTIES OF SOIL CLIFFSIDE STEAM STATION DUKE ENERGY CAROLINAS, LLC, MOORESBORO, NC P:\Duke Energy Carolinas\21. CLIFFSIDE\CSA Update\Tables\Table 6-2 Chemical Properties of Soil Page 1 of 1 Al2O3 BaO CaO Cr2O3 Fe2O3 K2O MgO MnO Na2O P2O5 SiO2 SrO TiO2 V2O5 LOI C S As Cd Ce Co Cu Ga La Mo Ni Pb Sb Se Sn W Zn Zr IB-2S/SL American Assay CS-05 42 20.84 0.11 0.3 0.01 5.62 2.35 0.92 0.05 0.84 0.16 61.69 0.03 1.09 0.02 8.18 0.74 0.03 7 <0.2 210 28 52 24 86 5 48 29 <1 <1 3 1 101 63 AB-6S American Assay CS-06 17 24.18 0.17 0.17 0.02 5.08 1.55 0.39 0.02 0.46 0.37 48.1 0.23 1.15 0.05 8.21 6.82 0.06 62 0.7 284 68 220 44 120 5 121 65 8 9 6 5 120 222 U5-3D American Assay CS-07 40.0-45.0 23.73 0.1 0.09 0.03 8.16 2.01 1.41 0.08 0.17 0.16 55.21 0.02 1.01 0.03 9.93 0.48 <0.005 14 1.1 130 55 86 29 53 6 91 37 2 <1 3 3 114 77 GWA-10S American Assay CS-08 25.0-29.0 18.25 0.1 0.31 0.01 3.95 2.51 0.61 0.08 1.13 0.25 69.43 0.04 0.88 0.02 5.66 0.37 0.03 8 <0.2 163 22 31 19 71 4 42 29 2 <1 3 2 73 37 BG-1D American Assay CS-09 35 25.1 0.13 <0.01 0.01 5.23 2.41 0.25 0.08 0.25 0.39 56.46 0.03 1.31 0.02 8.37 0.19 <0.005 7 <0.2 216 52 82 22 111 7 50 29 <1 <1 1 <1 100 12 AS-5S American Assay CS-10 39.0-44.0 26.31 0.08 <0.01 <0.01 1.33 2.54 0.09 0.11 0.27 0.12 63.57 0.02 0.56 <0.01 7.54 0.12 <0.005 4 <0.2 124 19 17 15 59 5 28 40 <1 <1 2 2 92 23 U5-3D American Assay CS-11 25.0-27.0 21.9 0.07 0.14 0.03 8.2 1.98 2.15 0.1 0.15 0.25 57.11 0.01 1.06 0.02 9.71 0.17 <0.005 20 <0.2 175 51 49 29 68 3 121 25 2 <1 3 2 124 53 GWA-5S American Assay CS-12 19.0-28.0 19.01 0.06 1.93 0.03 6.63 1.9 2.27 0.1 0.86 0.38 57.09 0.04 1.22 0.02 6.41 0.11 0.05 4 <0.2 194 42 47 24 66 5 127 16 <1 <1 3 6 84 41 AB-3S American Assay CS-13 40 23.12 0.2 0.29 0.02 7.17 2.01 0.71 0.04 0.4 0.23 56.9 0.15 1.15 0.03 7 0.11 0.01 43 0.4 207 54 143 33 85 8 113 41 4 4 5 4 81 139 MW-30S American Assay CS-14 43.0-48.0 23.88 0.17 0.01 0.03 8.76 1.95 1.2 0.1 0.14 0.22 52.7 0.02 1.2 0.03 9.51 0.29 <0.005 7 <0.2 189 52 78 29 93 4 121 23 <1 <1 2 1 111 50 IB-3B American Assay CS-15 49.0-51.0 20.99 0.07 0.85 0.03 4.47 1.17 1.21 0.05 0.58 0.13 58.83 <0.01 1 0.02 9.57 1.798 <0.005 2 <0.2 34 23 32 25 54 5 37 25 1 <1 4 1 84 19 AB-10 American Assay CS-16 109 19.08 0.04 0.32 0.02 3.99 0.86 0.36 0.04 0.16 0.09 67.77 <0.01 0.5 0.01 5.34 0.084 <0.005 3 <0.2 5 11 14 24 45 5 18 40 2 <1 4 <1 31 7 AB-1D American Assay CS-18 119 19.84 0.06 0.41 0.01 4.09 1.15 0.53 0.31 0.09 66.6 <0.01 0.52 0.01 5.23 0.073 <0.005 3 <0.2 14 18 15 25 61 5 24 31 3 3 5 6 50 9 AS-15B American Assay CS-19 95.0-100.0 18.14 0.06 0.53 0.03 4.26 1.96 0.52 0.04 0.39 0.1 64.71 <0.01 0.52 0.01 4.83 0.85 0.075 15 <0.2 46 16 32 23 48 8 45 42 2 1 6 2 39 16 U5-2S American Assay CS-20 60.0-62.0 25.51 0.19 1.1 0.02 8.26 1.55 1.3 0.03 0.51 0.17 54.83 0.04 1.26 0.05 6.21 5.022 0.04 159 0.7 47 46 137 49 69 4 88 59 6 6 10 4 107 82 GWA-20S American Assay CS-21 17.0-19.0 18.2 0.05 1.03 0.02 4.76 1.41 0.81 0.1 0.7 0.12 65.42 <0.01 0.58 0.02 4.7 0.206 <0.005 4 <0.2 29 15 20 22 24 5 19 33 3 5 6 4 39 11 GWA-33S American Assay CS-22 10.0-15.0 13.87 0.04 1.61 0.03 4.29 1.22 2.14 0.05 0.76 0.07 65.18 0.01 0.84 0.02 3.76 0.13 <0.005 2 <0.2 50 17 17 16 38 5 42 17 5 2 6 1 32 22 GWA-2S American Assay CS-23 18.0-21.0 15.76 0.04 0.64 0.04 5.36 1.46 2.07 0.07 0.7 0.11 66.83 <0.01 0.64 0.02 4.31 0.178 <0.005 4 <0.2 26 20 24 19 31 7 60 19 2 3 5 4 75 17 GWA-30S American Assay CS-24 27.5 16.48 0.09 0.74 0.02 5.85 1.43 1.67 0.05 0.85 0.13 62.83 <0.01 0.74 0.03 4.18 0.217 <0.005 4 <0.2 54 21 40 22 88 5 42 39 2 2 3 <1 60 22 GWA-24S American Assay CS-28 20.0-25.0 18.27 0.08 0.8 0.03 5.25 1.54 1.17 0.05 0.75 0.09 68.39 0.01 1.08 0.03 3.05 0.415 0.064 3 <0.2 85 22 32 22 38 5 22 20 <1 1 4 14 51 6 MW-22BR American Assay CS-29 41.0-43.0 13.83 0.07 0.53 0.03 4.55 1.52 0.49 0.03 0.47 0.08 70.85 0 0.8 0.02 2.75 0.231 0.018 11 <0.2 79 33 23 16 30 8 15 16 <1 <1 4 6 26 6 Prepared by: DMY Checked by: MCM Notes: ft bgs - feet below ground surface ppm - parts per million Elemental Composition (ppm)Boring ID Lab Performing Analysis Unique Lab Identifier Sample Depth (ft bgs) Oxide Composition, Loss on Ignition, Carbon, and Sulfur (wt. %) TABLE 6-3 SOIL, SEDIMENT, AND ASH ANALYTICAL METHODS CLIFFSIDE STEAM STATION DUKE ENERGY CAROLINAS, LLC, MOORESBORO, NC P:\Duke Energy Carolinas\21. CLIFFSIDE\CSA Update\Tables\ Table 6-3 Soil, Sediment and Ash Analytical Methods Page 1 of 1 INORGANIC COMPOUNDS UNITS METHOD Aluminum mg/kg EPA 6010D Antimony mg/kg EPA 6020B Arsenic mg/kg EPA 6020A Barium mg/kg EPA 6010C Beryllium mg/kg EPA 6020B Boron mg/kg EPA 6010C Cadmium mg/kg EPA 6020A Calcium mg/kg EPA 6010C Chloride mg/kg EPA 9056A Chromium mg/kg EPA 6010C Cobalt mg/kg EPA 6020A Copper mg/kg EPA 6010C Iron mg/kg EPA 6010C Lead mg/kg EPA 6020A Magnesium mg/kg EPA 6010C Manganese mg/kg EPA 6010C Mercury mg/kg EPA Method 7471B Molybdenum mg/kg EPA 6010C Nickel mg/kg EPA 6010C Nitrate as Nitrogen mg/kg EPA 9056A pH SU EPA 9045D Potassium mg/kg EPA 6010C Selenium mg/kg EPA 6020A Sodium mg/kg EPA 6010C Strontium mg/kg EPA 6010C Sulfate mg/kg EPA 9056A Thallium (low level) (SPLP Extract only)mg/kg EPA 6020A Total Organic Carbon mg/kg EPA 9060 Vanadium mg/kg EPA 6020A Zinc mg/kg EPA 6010C Sediment Specific Samples Cation exchange capacity meg/100g LONR 29-B Particle size distribution % Percent solids % Percent organic matter %EPA/600/R-02/069 Redox potential mV Faulkner et al. 1898; HACH Method 10228 Notes: 1. Soil samples to be analyzed for Total Inorganics using USEPA Methods 6010/6020 and pH using USEPA Method 9045, as noted above. 2. Ash samples to be analyzed for Total Inorganics using USEPA Methods 6010/6020 and pH using USEPA Method 9045; select ash samples will also be analyzed for leaching potential using SPLP Extraction Method 1312 in conjunction with USEPA Methods 6010/6020. Prepared by: RBI Checked by: TCP Revised by: EMB Rechecked by: JAW 3. Analytical methods and reporting limits as presented were applicable at time of CSA field implementation in 2015. Analytical methods and reporting limits are updated periodically and applied as appropriate. TABLE 6-4 ASH PORE WATER, GROUNDWATER, SURFACE WATER, AND AOW ANALYTICAL METHODS CLIFFSIDE STEAM STATION DUKE ENERGY CAROLINAS, LLC, MOORESBORO, NC P:\Duke Energy Carolinas\21. CLIFFSIDE\CSA Update\Tables\Table 6-4 Ash Pore, GW, SW, Seep Analytical Methods 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 Turbidity NA NTU Field Water Quality Meter Ferrous Iron NA mg/L Field Test Kit Aluminum 0.005 mg/L EPA 200.7 or 6010D Antimony 0.001 mg/L EPA 200.8 or 6020B Arsenic 0.001 mg/L EPA 200.8 or 6020A Barium 0.005 mg/L EPA 200.7 or 6010C Beryllium 0.001 mg/L EPA 200.8 or 6020A Boron 0.05 mg/L EPA 200.7 or 6010C Cadmium 0.001 mg/L EPA 200.8 or 6020A Chromium 0.001 mg/L EPA 200.8 or 6010C Cobalt 0.001 mg/L EPA 200.8 or 6020A Copper 0.001 mg/L EPA 200.8 or 6020B Iron 0.01 mg/L EPA 200.7 or 6010C Lead 0.001 mg/L EPA 200.8 or 6020A Manganese 0.005 mg/L EPA 200.7 or 6010C Mercury (low level)0.005 ng/L 1631 ONLY Molybdenum 0.001 mg/L EPA 200.8 or 6020B Nickel 0.001 mg/L EPA 200.8 or 6020B 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 1 pCi/L EPA 904.0/SW846 9320 Modified Uranium (233, 234, 236, 238)Varies by Isotope ug/mL SW846 3010A/6020A Alkalinity (as CaCO3)5 mg/L SM 2320B Bicarbonate 5 mg/L SM 2320 Calcium 0.01 mg/L EPA 200.7 Carbonate 5 mg/L SM 2320 Chloride 0.1 mg/L EPA 300.0 or 9056A Magnesium 0.005 mg/L EPA 200.7 Methane 0.01 mg/L RSK 175 Nitrate as Nitrogen 0.01 mg-N/L EPA 353.2 Potassium 0.1 mg/L EPA 200.7 Sodium 0.05 mg/L EPA 200.7 Sulfate 0.1 mg/L EPA 300.0 or 9056A Sulfide 0.1 mg/L SM4500S2-D Total Dissolved Solids 25 mg/L SM 2540C Total Organic Carbon 0.1 mg/L SM 5310C/EPA9060A Total Suspended Solids 2.5 mg/L SM 2450D Arsenic Speciation Vendor Specific mg/L IC-ICP-CRC-MS Iron Speciation Vendor Specific mg/L IC-ICP-CRC-MS Manganese Speciation Vendor Specific mg/L IC-ICP-CRC-MS Prepared by: RBI Checked by: SRW/TCP Notes: ºC - Degrees Celsius µS/cm = micro-Siemens per centimeter mg/L - Milligrams per liter mg - N/L - Milligrams nitrogen per liter mV - Millivolts NA - Not analyzed NTU - Nephelometric turbidity unit pCi/L - picocuries per liter RL = reporting limit S.U. - Standard Unit ug/mL - micrograms per milliliter 2.Analytical methods and reporting limits as presented were applicable at time of CSA field implementation in 2015.Analytical methods and reporting limits are updated periodically and applied as appropriate. INORGANICS FIELD PARAMETERS ADDITIONAL GROUNDWATER CONSTITUENTS 1. Select constituents will be analyzed for total and dissolved concentrations. ANIONS/CATIONS RADIONUCLIDES Source: HDR, Comprehensive Site Assessment Report Cliffside Steam Station Ash Basin, August 18, 2015 Page 1 of 1 Table 6-5. Transition Zone Mineralogy Results Boring ID Lab Performing Analysis Unique Lab Identifier Sample Depth (ft bgs) Mineralogical Composition (wt %) Quartz Illite Biotite Kaolinite Feldspar Zeolite Total BG-1BR American Assay CS-01 63.6-65.5 58.2 - 26.3 15.1 0.5 - 100.1 BG-2D American Assay CS-03 47.4-47.7 12.1 68.9 - 7.7 9.6 0.9 99.2 Notes: 1.Refer to Appendix H for analytical procedures. 2.Chemical composition of constituent minerals is as follows: Quartz – SiO 2 , Illite – K 1-1.5 Al 4 [Si 7-6.5 Al 1-1.5 O 20 ](OH)4 , Biotite – K 2 (Mg,Fe+2)6-4 (Fe+3,Al,Ti)0-2 [Si 6-5 Al 2- 3 O 20 ](OH,F)4 , Kaolinite – Al 4 [Si 4 O 10 ](OH)8 , Feldspar – (K,Na)[AlSi 3 O 8 ]-Ca[Al 2 Si 2 O 8 ], Zeolite – (Na 2 ,K2 ,Ca,Ba)[(Al,Si)O 2 ]n •xH 2 O 3.ft bgs = feet below ground surface TABLE 6-6 CHEMICAL PROPERTIES OF TRANSITION ZONE CLIFFSIDE STEAM STATION DUKE ENERGY CAROLINAS, LLC, MOORESBORO, NC P:\Duke Energy Carolinas\21. CLIFFSIDE\CSA Update\Tables\Table 6-6 Chemical Properties of Transition Zone Page 1 of 1 Al2O3 BaO CaO Cr2O3 Fe2O3 K2O MgO MnO Na2O P2O5 SiO2 SrO TiO2 V2O5 LOI C S As Cd Ce Co Cu Ga La Mo Ni Pb Sb Se Sn W Zn Zr BG-1BR American Assay CS-01 63.6-65.5 27.5 0.03 0.5 <0.01 7 1.3 4.3 0.2 0.1 0.1 59 0 1 0 5.5 0 <0.005 2 <0.2 53 38 19 11 20 2 58 11 1 3 21 <1 118 21 BG-2D American Assay CS-03 47.4-47.7 28.7 0.06 0.4 <0.01 8.2 1.5 1.7 0.1 0.4 0.1 61.3 0 1.1 0 0.8 0.2 0.055 6 <0.2 86 21 46 18 37 4 29 38 1 4 24 <1 97 6 Prepared by: DMY Checked by: MCM Notes: ft bgs - feet below ground surface Elemental Composition (wt %) Boring ID Lab Performing Analysis Unique Lab Identifier Sample Depth (ft bgs) Oxide Composition, Loss on Ignition, Carbon, and Sulfur (wt %) TABLE 6-7 CHEMICAL PROPERTIES OF WHOLE ROCK CLIFFSIDE STEAM STATION DUKE ENERGY CAROLINAS, LLC, MOORESBORO, NC P:\Duke Energy Carolinas\21. CLIFFSIDE\CSA Update\Tables\Table 6-7 Chemical Properties of Whole Rock Page 1 of 1 Al2O3 BaO CaO Cr2O3 Fe2O3 K2O MgO MnO Na2O P2O5 SiO2 SrO TiO2 V2O5 LOI C S As Cd Ce Co Cu Ga La Mo Ni Pb Sb Se Sn W Zn Zr GWA-25D American Assay CS-31 47.3-47.7 15.54 0.07 1.31 0.05 4.36 3.26 0.71 0.1 1.26 0.11 70.36 0.02 0.26 <0.01 0.26 0.054 0.008 <1 <0.2 35 6 6 14 13 2 16 46 2 <1 14 <1 58 22 GWA-32BR American Assay CS-32 59.8-59.95 17.06 0.03 1.38 0.04 2.78 3.32 0.5 0.03 1.5 0.28 68.74 0.02 0.25 <0.01 0.73 0.047 <0.005 1 <0.2 69 4 5 23 25 1 8 54 1 <1 16 <1 99 41 GWA-30BR American Assay CS-33 43.3-43.5 16.01 0.04 3.08 0.05 6.05 1.99 2.74 0.05 1.22 0.09 61.97 0.02 0.59 0.02 0.88 0.162 0.321 1 <0.2 98 16 28 20 39 2 62 19 3 <1 8 <1 113 24 GWA-30D American Assay CS-34 39.3-39.65 18.43 0.05 3.92 0.04 7.22 2.22 3.73 0.06 1.24 0.22 63.05 0.03 0.72 0.02 0.75 0.136 0.256 2 <0.2 88 20 35 26 34 1 78 21 3 <1 13 <1 128 21 MW-38D American Assay C-MW-38D-1 67.9-68.2 16.97 0.05 3.85 0.04 6.63 2.03 3.57 0.05 1.31 0.15 59.27 0.03 0.63 0.02 0.83 0.034 0.385 2 <0.2 80 17 43 22 30 3 79 19 2 <1 <1 <1 85 22 MW-38D American Assay C-MW-38D-2 79.5-79.8 18.6 0.03 2.75 0.05 1.5 2.97 0.17 0.06 1.64 0.06 69.01 0.03 0.04 <0.01 0.46 0.096 0.005 <1 <0.2 44 1 5 17 13 1 6 55 <1 <1 5 <1 21 6 BG-1D American Assay C-BG-1D-1 74.2-74.5 20.4 0.07 0.79 0.04 6.74 2.85 1.12 0.1 1.13 0.11 67.66 0.01 0.59 0.02 1.79 0.114 0.155 2 <0.2 104 14 17 29 39 1 25 35 1 <1 22 <1 102 7 BG-2D American Assay CS-04 51.5-51.7 15.97 0.03 3.93 <0.01 4.39 1.3 2.92 0.06 0.36 0.13 69.38 0.03 0.59 <0.01 0.83 0.161 0.055 1 <0.2 54 17 9 9 24 2 57 8 <1 <1 16 <1 49 18 Prepared by: DMY Checked by: MCM Notes: ft bgs - feet below ground surface ppm - parts per million Boring ID Lab Performing Analysis Oxide Composition, Loss on Ignition, Carbon, and Sulfur (wt. %)Elemental Composition (ppm)Unique Lab Identifier Sample Depth (ft bgs) Table 6.8. Cliffside Petrographic Analysis SummaryQuartz Plagioclase Microcline Biotite Muscovite Sillimanite Pyrite Sphene Apatite Tourmaline Garnet Kyanite ZirconGWA-25D HDR C-GWA-25D 47.7' to 48.0' 30155201555tr2trtr5tr- Garnet Biotite Mica GneissGWA-32BR HDR C-GWA-32BR 59.95' to 60.3' 3520tr52515trtrtrtr-trtrMica GneissGWA-30BR HDR C-GWA-30BR 43.0' to 43.3' 3527tr305tr3tr----trBiotite GneissGWA-30D HDR C-GWA-30D 39.65' to 40.0' 4028tr30-tr2tr--tr-trBiotite GneissMW-38D HDR C-MW-38D-1 67.9' to 68.2' 5030tr20-trtrtr----trBiotite GneissMW-38D HDR C-MW-38D-2 79.5' to 79.8' 452520-54-tr--1tr-Quartz Feldspar GneissBG-1D HDR C-BG-1D-1 74.2' to 74.5' 3015tr20101052tr53trtr Garnet Biotite Mica GneissBG-2D HDR C-BG-2D-1 51.7' to 52.0' 5020tr25-tr32----trBiotite Gneiss1Percent Mineralogy estimated using Comparison Charts for Estimating Percentage Composition.Pyrite: FeS2Sphene: CaTiSiO5Apatite: Ca5(PO4)3(F,Cl,OH)Garnet: (Ca, Mg, Fe, Mn)32+(Al, Fe, Cr)23+(SiO4)3Kyanite: Al2SiO5Zircon: ZrSiO4Rock Type 2tr - Trace Amounts.Boring IDPetrography BySample IDSample DepthMineral Percentage by Volume1Sillimanite: Al2SiO5Quartz- SiO2Microcline feldspar: KAl2Si2O8Muscovite: KAl2(AlSi3O10)(F,OH)2Biotite: K(Mg,Fe)3AlSi3O10(OH)2Source: HDR, Corrective Action Plan Part 2 Cliffside Steam Station Ash Basin, Appendix A CSA Addendum, February 12, 2016 Page 1 of 1 TABLE 6-9 HISTORIC WATER LEVEL MEASUREMENTS CLIFFSIDE STEAM STATION DUKE ENERGY CAROLINAS, LLC, MOORESBORO, NC P:\Duke Energy Carolinas\21. CLIFFSIDE\CSA Update\Tables\Table 6-9 Historic Water Level Measurements Page 1 of 5 Well ID Groundwater Elevation (NAVD 88) June 2015 Groundwater Elevation (NAVD 88) August 2015 Groundwater Elevation (NAVD 88) February 2016 Groundwater Elevation (NAVD 88) March 2016 Groundwater Elevation (NAVD 88) April 2016 Groundwater Elevation (NAVD 88) June 2016 Groundwater Elevation (NAVD 88) December 2016 Groundwater Elevation (NAVD 88) February 2017 Groundwater Elevation (NAVD 88) May 2017 Groundwater Elevation (NAVD 88) August 2017 Monitoring Zone AB-1D 710.44 710.85 --710.59 709.83 722.24 712.04 711.84 711.24 121.5 126.5 Deep AB-1S 734.68 733.57 --732.64 732.47 733.31 733.47 737.83 733.48 54 69 Shallow AB-2D 731.99 733.00 --733.00 742.76 729.63 731.34 731.58 742.59 72.5 77.5 Deep AB-2S 743.12 743.48 --743.32 743.33 742.41 742.55 743.56 743.24 44 49 Shallow AB-3BR ---762.88 --667.91 675.12 690.00 684.50 175.5 185.5 Bedrock AB-3BRU 762.33 762.56 --762.42 762.44 762.19 761.97 --118 123 Deep AB-3BRUA --------711.82 758.43 125 130 Deep AB-3I 762.37 762.60 --762.44 762.48 762.21 761.03 762.73 761.19 92 102 Shallow AB-3S 762.19 762.52 --762.52 762.21 762.03 762.01 762.65 762.64 22 37 Ash Pore Water AB-3SL 762.32 762.56 --762.42 762.41 762.17 761.98 762.68 762.77 62.2 72.2 Ash Pore Water AB-4BR 758.35 757.86 --757.56 757.07 757.57 757.33 757.62 757.37 104.5 109.5 Bedrock AB-4D 762.54 762.22 --762.29 761.77 762.30 762.11 762.47 762.22 55 60 Deep AB-4S 762.19 761.69 --761.84 761.22 761.98 761.72 762.05 761.78 5 20 Ash Pore Water AB-4SL 762.41 762.02 --762.06 761.50 762.19 761.93 762.27 762.03 28.7 28.7 Ash Pore Water AB-5BR ---762.98 -762.84 763.11 763.05 763.12 762.49 91.2 96.1 Bedrock AB-5BRU 764.11 763.97 --764.51 764.60 764.29 764.30 764.30 764.01 60.5 65.5 Deep AB-5S 763.79 763.70 --763.74 763.96 763.91 763.80 763.68 763.54 5 20 Ash Pore Water AB-6BR 758.52 758.06 --759.21 759.01 758.54 758.70 758.91 758.13 96 101 Bedrock AB-6D 764.15 763.83 --764.78 764.84 764.44 764.60 764.74 764.08 65.8 70.8 Deep AB-6S 764.20 763.74 --764.21 764.55 764.45 764.25 764.24 764.23 5 20 Ash Pore Water AS-1D 729.11 729.26 --730.87 730.12 728.28 728.20 728.61 728.47 106 111 Deep AS-1SB 730.20 730.08 --732.00 -729.45 729.40 729.84 729.65 83 98 Shallow AS-2BR ------657.49 657.44 658.15 658.07 92 97 Bedrock AS-2D 637.63 665.27 --667.06 666.38 665.86 665.85 666.43 665.62 55 60 Deep AS-2S 672.88 672.14 --673.84 673.22 672.29 672.27 672.86 672.19 15.5 30.5 Shallow AS-3BRU 704.36 704.26 --704.66 704.59 704.21 704.18 704.21 704.14 48.5 53.5 Deep AS-4D 744.92 744.74 --746.46 745.85 744.69 744.67 744.95 744.71 95 100 Deep AS-4S 743.25 738.91 --744.53 744.05 742.74 742.71 742.77 742.64 84.4 94.4 Shallow AS-5BR 703.07 702.80 --703.87 703.56 699.76 702.28 702.39 642.14 75.1 80.1 Bedrock AS-5BRU 700.45 699.15 --701.45 701.12 703.01 693.77 699.88 699.62 55 60 Deep AS-5S 702.12 701.64 --703.42 702.74 701.57 701.51 701.75 701.44 29.3 44.3 Shallow AS-6BR 731.89 729.61 --732.69 729.20 728.91 728.54 --153.1 158.1 Bedrock AS-6BRA --------722.22 722.09 153.5 158.5 Bedrock AS-6D 722.27 722.00 --723.25 723.27 721.80 721.74 721.80 721.59 123 128 Deep AS-6S 723.24 721.76 --723.49 723.51 722.03 721.93 721.97 721.76 86 101 Shallow AS-7BR 619.15 ---704.09 700.52 698.98 696.85 698.02 695.62 122 127 Bedrock AS-7BRA --------632.80 688.65 120 130 Bedrock AS-7D 706.25 704.65 --707.80 706.90 704.86 704.97 705.92 704.91 82.5 87.5 Deep AS-7S 710.27 709.39 --712.38 711.26 708.83 708.72 710.59 709.03 28.5 43.5 Ash Pore Water BG-1BR 775.71 773.96 --779.35 777.74 774.10 774.41 --92.0 97.0 Bedrock BG-1BRA --------775.96 774.41 93.0 98.0 Bedrock BG-1D 775.93 774.17 --779.52 777.92 775.35 774.58 775.43 773.94 66.5 71.5 Deep BG-1S 775.87 774.12 --779.62 777.98 774.20 774.30 775.19 773.86 20 35 Shallow BG-2D 797.43 797.60 --802.28 801.12 796.05 795.05 794.59 794.32 49 54 Bedrock CCPMW-1D ---843.01 -839.72 836.10 835.40 835.30 835.17 49 54 Bedrock CCPMW-1S ---843.35 -840.49 Below Pump Below Pump Below Pump Below Pump 30 40 Shallow CCPMW-2D ---------799.99 65 70 Deep CCPMW-2S ---------Below Pump 32 42 Shallow CCPMW-3D ---------792.53 26 31 Deep CCPMW-3S ---------Below Pump 9 14 Shallow Screened Interval (feet bgs) TABLE 6-9 HISTORIC WATER LEVEL MEASUREMENTS CLIFFSIDE STEAM STATION DUKE ENERGY CAROLINAS, LLC, MOORESBORO, NC P:\Duke Energy Carolinas\21. CLIFFSIDE\CSA Update\Tables\Table 6-9 Historic Water Level Measurements Page 2 of 5 Well ID Groundwater Elevation (NAVD 88) June 2015 Groundwater Elevation (NAVD 88) August 2015 Groundwater Elevation (NAVD 88) February 2016 Groundwater Elevation (NAVD 88) March 2016 Groundwater Elevation (NAVD 88) April 2016 Groundwater Elevation (NAVD 88) June 2016 Groundwater Elevation (NAVD 88) December 2016 Groundwater Elevation (NAVD 88) February 2017 Groundwater Elevation (NAVD 88) May 2017 Groundwater Elevation (NAVD 88) August 2017 Monitoring Zone Screened Interval (feet bgs) CCPMW-4 ---------816.32 50.0 65.0 Bedrock CCPMW-5 ---------814.48 62.5 72.5 Bedrock CCPMW-6D ---------808.07 50.0 60.0 Bedrock CCPMW-6S ---------814.05 33.5 43.5 Shallow CCPTW-1D ---------803.47 61 66 Deep CCPTW-1S ---------Below Pump 24.7 34.7 Shallow CCPTW-2 ---------Below Pump 35 45 Shallow CCR-12D ---------31.44 59.9 64.9 Deep CCR-12S ---------33.56 33.0 48.0 Shallow CCR-13D ---------25.05 27.0 32.0 Deep CCR-15D ---------Below Pump 15.0 20.0 Deep CCR-IB-1D ---------10.08 20.0 25.0 Deep CCR-IB-1S ---------10.31 6.0 16.0 Shallow CLMW-1 750.80 751.02 --751.78 751.26 750.28 750.37 750.90 750.80 47.5 57.5 Shallow CLMW-2 689.16 688.83 --690.61 689.89 688.52 688.42 688.89 688.41 43 53 Shallow CLMW-3D 726.62 726.31 --728.62 727.62 725.52 725.46 725.76 725.79 93 103 Shallow CLMW-3S 726.72 726.35 --728.62 727.68 725.60 725.52 725.82 725.84 49 59 Shallow CLMW-4 655.07 654.93 --------5 15 Shallow CLMW-5D ---------710.69 94 104 Shallow CLMW-5S 738.18 736.35 --737.53 735.96 736.41 736.57 738.34 737.68 50 60 Shallow CLMW-6 765.06 764.71 --766.46 766.15 765.42 746.75 737.97 765.03 20.0 30.0 Shallow CLP-1 ---------703.53 25 35 -- CLP-2 ---------654.53 8 18 -- CLP-3 ---------758.87 30 40 -- CLP-4 ---------757.54 33 73 -- GWA-10D 658.95 661.29 --661.28 661.25 660.08 659.84 659.54 658.95 47.6 52.6 Deep GWA-10S 658.05 660.75 --660.80 660.81 659.94 659.77 659.38 658.88 12 27 Shallow GWA-11BRU 658.05 660.44 --660.14 659.97 658.34 657.99 658.07 657.24 37 42 Deep GWA-11S 658.19 660.19 --660.41 660.31 658.58 658.18 658.24 657.33 12 27 Shallow GWA-12BRU 683.55 683.10 --684.85 683.96 681.56 681.48 681.89 681.16 48 53 Deep GWA-12S 691.50 691.20 --692.15 691.63 690.55 680.50 691.10 690.68 19 34 Shallow GWA-13BR 704.94 704.82 ---705.07 -698.83 699.20 696.16 80.5 85.5 Bedrock GWA-14BR ------679.84 678.85 674.13 672.63 118.5 128.5 Bedrock GWA-14D 685.95 685.44 --685.16 685.46 680.24 678.71 674.09 676.83 48 53 Deep GWA-14S 686.27 685.79 --687.82 685.85 679.26 679.42 676.76 -21.3 36.3 Shallow GWA-1BRU 766.16 767.18 --768.39 767.87 765.95 765.58 767.47 767.20 22.8 27.8 Deep GWA-20BR ------726.53 727.12 727.87 727.54 54.0 59.0 Bedrock GWA-20D 722.85 722.78 --723.84 723.22 723.11 723.11 723.28 723.00 25 30 Deep GWA-20S 728.09 727.72 --728.63 727.65 726.58 726.87 727.62 727.10 4.5 19.5 Shallow GWA-21BR 646.38 670.25 ---670.04 670.46 670.40 670.88 670.99 60.6 65.6 Bedrock GWA-21BRU 658.35 658.08 --659.21 658.84 659.05 659.56 660.15 659.08 20 25 Deep GWA-21S 658.77 658.37 --659.94 659.45 Below Pump 660.81 661.05 Below Pump 5.5 15.5 Shallow GWA-22BRU 653.19 652.21 --653.80 653.07 652.98 652.79 653.48 653.38 17 22 Deep GWA-22S 655.77 655.46 --656.93 656.07 656.39 656.68 656.89 655.45 2.6 12.6 Shallow GWA-23D 760.80 761.35 --761.55 759.55 763.39 761.25 757.77 761.29 23.5 28.5 Deep GWA-24BR ----780.55 778.51 774.12 773.63 776.58 774.70 65 70 Bedrock GWA-24D 775.53 774.54 --777.54 777.15 773.04 772.72 774.31 773.23 28 33 Deep GWA-24S 773.47 772.32 --775.27 774.13 Below Pump Below Pump Below Pump Below Pump 14 24 Shallow GWA-25D 768.66 768.34 --769.79 769.40 768.74 768.98 769.37 768.69 36.5 41.5 Deep GWA-25S 768.65 768.31 --769.71 769.39 768.74 768.90 769.34 768.66 10 25 Shallow TABLE 6-9 HISTORIC WATER LEVEL MEASUREMENTS CLIFFSIDE STEAM STATION DUKE ENERGY CAROLINAS, LLC, MOORESBORO, NC P:\Duke Energy Carolinas\21. CLIFFSIDE\CSA Update\Tables\Table 6-9 Historic Water Level Measurements Page 3 of 5 Well ID Groundwater Elevation (NAVD 88) June 2015 Groundwater Elevation (NAVD 88) August 2015 Groundwater Elevation (NAVD 88) February 2016 Groundwater Elevation (NAVD 88) March 2016 Groundwater Elevation (NAVD 88) April 2016 Groundwater Elevation (NAVD 88) June 2016 Groundwater Elevation (NAVD 88) December 2016 Groundwater Elevation (NAVD 88) February 2017 Groundwater Elevation (NAVD 88) May 2017 Groundwater Elevation (NAVD 88) August 2017 Monitoring Zone Screened Interval (feet bgs) GWA-26D 763.63 762.40 --765.53 764.94 762.86 763.62 764.80 762.69 68.6 73.8 Deep GWA-26S 763.11 762.78 --765.86 764.31 762.16 763.11 764.46 761.97 10.2 25.2 Shallow GWA-27BR ------757.06 756.84 757.47 757.48 103.9 108.9 Bedrock GWA-27DA 755.83 755.96 --756.08 756.09 755.70 755.48 755.89 776.11 51 56 Deep GWA-28BR 709.45 709.73 --710.30 709.56 710.60 710.51 711.24 710.93 85 90 Bedrock GWA-28BRU 715.51 715.24 --715.93 715.56 715.61 715.84 717.72 716.18 53.9 58.9 Deep GWA-28S 719.74 719.44 --721.04 720.12 718.73 719.79 726.27 720.05 22.5 37.5 Shallow GWA-29BR 644.97 650.28 --662.89 660.30 661.70 657.42 --40 45 Bedrock GWA-29BRA --------662.70 661.92 48.4 58.4 Bedrock GWA-29D 656.82 655.10 --656.88 656.83 655.60 655.50 656.54 656.06 20.5 25.5 Deep GWA-2BR ------669.69 669.61 669.80 669.58 32.4 37.4 Bedrock GWA-2BRU -669.61 --670.95 670.49 670.90 669.56 669.85 669.44 32.4 37.4 Deep GWA-2S 671.86 671.30 --673.41 672.64 669.87 671.06 671.43 671.01 6 21 Shallow GWA-30BR 771.24 770.95 --771.56 771.61 771.53 771.69 771.99 771.55 65 70 Bedrock GWA-30BRU 779.30 778.29 --780.65 780.08 774.50 778.70 779.40 777.78 38 43 Deep GWA-30S 783.68 781.28 --784.50 783.72 780.92 781.05 781.54 780.33 17.5 27.5 Shallow GWA-31BR 703.82 705.92 --717.08 712.79 712.73 747.14 747.33 -45.9 50.9 Bedrock GWA-31BRA ----740.40 -700.94 710.41 721.09 726.18 116.5 126.5 Bedrock GWA-31D 741.88 741.11 --741.74 741.85 734.58 737.41 737.84 737.35 10.4 15.4 Deep GWA-32BR 667.53 666.83 --669.44 668.97 667.41 667.31 666.45 666.72 60 65 Bedrock GWA-32D 665.87 664.68 --667.78 666.21 664.75 665.15 665.33 664.96 35 40 Deep GWA-33BR 705.74 705.23 --706.08 705.64 698.93 699.50 697.31 696.65 85 90 Bedrock GWA-33D 715.97 715.07 --716.87 716.32 715.50 716.38 717.14 714.60 26 31 Deep GWA-33S 716.52 715.48 --717.40 717.02 716.02 717.03 717.92 715.19 5 15 Shallow GWA-34S ----710.06 708.11 702.42 702.01 702.27 706.37 14.3 29.3 Shallow GWA-35D ----670.11 669.68 668.64 668.50 689.80 668.45 62 67 Deep GWA-35S ----672.04 671.09 668.66 668.60 688.62 668.53 20 35 Shallow GWA-36D --670.81 --702.40 701.60 702.15 702.52 699.66 83 88 Deep GWA-36S --701.65 --701.31 699.98 700.55 701.02 701.50 7 22 Shallow GWA-37D ----672.92 672.26 671.94 672.19 672.74 672.01 95 100 Deep GWA-37S ----663.45 668.29 668.08 668.17 668.74 668.26 40 55 Shallow GWA-38D ----705.87 705.63 704.40 704.20 704.02 703.98 53 58 Deep GWA-38S ----------35 50 Shallow GWA-39S ----719.99 719.52 719.23 719.26 719.20 719.30 3 5 Shallow GWA-3D 696.68 695.75 --698.63 698.23 696.35 696.38 696.60 695.82 62 67 Deep GWA-40S ----717.24 716.49 715.68 717.25 -715.92 4 7 Shallow GWA-42S ----715.29 714.84 716.00 715.76 715.56 714.01 4 9 Shallow GWA-43D ----712.65 709.88 705.45 706.23 705.34 704.78 42.5 47.5 Deep GWA-43S ----716.41 715.95 715.97 716.53 717.11 714.80 6 21 Shallow GWA-44BR --734.11 --732.47 730.83 731.71 732.91 732.16 94.1 99.1 Bedrock GWA-44D --727.47 --726.18 724.83 724.04 725.85 726.01 70 75 Deep GWA-44S --724.28 --724.38 723.20 723.26 723.86 723.59 36 51 Shallow GWA-45D --750.47 --752.63 750.58 751.47 752.48 751.35 84 89 Deep GWA-45S --763.55 ---760.23 760.19 760.23 760.35 45.5 55.5 Shallow GWA-46D ----------18 23 Deep GWA-47D ----758.90 757.98 754.79 754.83 755.59 754.67 50 55 Deep GWA-48BR ----783.26 779.62 772.67 771.86 774.17 772.76 82 87 Bedrock GWA-4D 706.11 705.53 --706.76 706.43 705.69 706.31 706.36 705.56 32 37 Deep GWA-4S 707.11 706.68 --707.88 707.66 707.01 707.27 707.50 706.91 5 20 Shallow GWA-5BRU 745.63 753.38 --744.83 754.76 753.74 753.72 754.87 754.06 40 45 Deep TABLE 6-9 HISTORIC WATER LEVEL MEASUREMENTS CLIFFSIDE STEAM STATION DUKE ENERGY CAROLINAS, LLC, MOORESBORO, NC P:\Duke Energy Carolinas\21. CLIFFSIDE\CSA Update\Tables\Table 6-9 Historic Water Level Measurements Page 4 of 5 Well ID Groundwater Elevation (NAVD 88) June 2015 Groundwater Elevation (NAVD 88) August 2015 Groundwater Elevation (NAVD 88) February 2016 Groundwater Elevation (NAVD 88) March 2016 Groundwater Elevation (NAVD 88) April 2016 Groundwater Elevation (NAVD 88) June 2016 Groundwater Elevation (NAVD 88) December 2016 Groundwater Elevation (NAVD 88) February 2017 Groundwater Elevation (NAVD 88) May 2017 Groundwater Elevation (NAVD 88) August 2017 Monitoring Zone Screened Interval (feet bgs) GWA-5S 754.91 754.69 --755.56 756.39 754.80 755.32 755.91 755.87 14 29 Shallow GWA-6D 769.70 768.75 --776.38 774.33 769.09 768.25 768.27 767.37 42 47 Deep GWA-6S 769.92 769.01 --776.42 774.38 769.19 768.44 768.86 767.84 31 41 Shallow IB-1D 664.03 664.52 --663.97 -----95 100 Deep IB-1S 665.15 666.20 --664.64 -----28 43 Ash Pore Water IB-2AL 666.79 667.22 --------38.8 48.8 Shallow IB-2BRU 675.10 675.01 --------97 102 Deep IB-2I 667.14 670.53 --------69 79 Shallow IB-2S-SL 671.17 670.73 --------22 37 Ash Pore Water IB-3D 659.24 660.06 --661.53 660.93 659.40 659.36 --61 66 Deep IB-3S 671.93 671.22 --671.50 671.04 698.13 667.80 --26 41 Shallow IB-4BR 688.71 688.30 --------69.3 74.3 Bedrock IB-4D 687.04 686.63 --------47 52 Deep IB-4S-SL 684.11 684.03 --------10 25 Ash Pore Water MW-10D 758.74 758.25 --759.28 757.23 -757.33 758.78 758.25 34 39 Deep MW-10S 758.46 758.09 --759.23 757.18 -758.15 758.56 758.07 19.7 34.7 Shallow MW-11D 719.77 720.55 --724.57 720.93 720.89 721.96 721.98 719.99 38 43 Deep MW-11S 737.35 737.48 --736.31 735.84 Below Pump 742.83 737.25 737.33 15 30 Shallow MW-20D 655.90 658.03 ----657.99 657.88 658.09 657.94 6.5 21.5 Deep MW-20DR ----------12.5 62.5 Bedrock MW-21BR 764.99 764.51 --765.81 763.63 763.91 763.73 764.23 763.54 81.1 86.1 Bedrock MW-21D 771.06 770.36 ----769.85 769.80 770.47 769.80 6.6 21.2 Deep MW-22BR 777.86 779.24 --788.89 786.03 778.27 777.15 778.60 778.48 86 91 Bedrock MW-22DR 782.47 781.17 ----777.76 776.48 780.60 777.89 40.4 90.2 Bedrock MW-23D 716.21 715.81 ----716.54 716.26 716.38 715.48 36 46 Deep MW-23DR 718.00 716.96 ----717.17 716.90 716.91 715.03 45 95 Bedrock MW-23S ---713.84 -716.66 716.93 716.86 717.08 716.14 10 25 Shallow MW-24D 796.86 794.89 -801.57 -798.37 793.82 794.92 797.19 795.22 33.2 53 Deep MW-24DR 801.48 799.39 -805.62 -802.72 797.88 798.64 800.84 799.70 60.3 105.1 Bedrock MW-25DR 654.42 654.32 ----654.34 654.99 655.13 655.00 37.3 87 Bedrock MW-2DA 694.15 693.74 --695.26 694.58 693.34 693.32 693.83 693.40 71 76 Bedrock MW-30D 790.96 789.46 -792.08 -791.59 788.81 788.90 789.61 788.24 86.1 91.1 Deep MW-30S 790.72 790.60 -793.14 -792.67 793.94 789.69 790.42 789.07 32.7 47.7 Shallow MW-32BR 810.15 808.64 -812.73 -810.06 805.95 805.56 807.32 807.12 67.5 72.5 Bedrock MW-32D 809.08 809.35 -812.38 -809.55 805.48 805.20 806.88 806.28 48.5 53.5 Deep MW-32S 807.80 806.69 -810.74 -808.15 Below Pump Below Pump Below Pump Below Pump 20 35 Shallow MW-34BRU 722.66 720.45 --724.06 722.44 718.51 717.85 738.90 720.64 43.7 48.7 Deep MW-34S 723.70 720.61 --725.07 720.75 720.54 720.56 720.57 720.71 14.4 29.4 Shallow MW-36BRU 665.31 664.84 --667.77 666.53 665.48 665.58 665.43 663.22 77.6 82.6 Deep MW-36S 665.87 664.54 --669.36 667.22 665.24 666.14 665.85 664.55 4 19 Shallow MW-38BR ------665.85 666.02 678.53 667.61 97.5 102.5 Bedrock MW-38D 667.92 667.36 --668.96 668.41 667.88 667.91 668.52 667.93 69 74 Deep MW-38S 666.71 666.28 --667.70 667.25 666.95 667.02 667.67 667.08 37.7 52.7 Shallow MW-40BRU 672.78 703.56 --704.76 704.46 703.41 703.95 704.50 703.49 30.4 35.4 Deep MW-40S 699.94 701.13 --702.86 702.53 701.37 702.16 703.02 701.64 5 20 Shallow MW-42D 760.66 773.53 --775.82 774.02 772.08 772.11 --44.7 49.7 Deep MW-42DA --------773.66 774.15 49.3 54.3 Deep MW-42S 774.75 773.47 --776.15 774.43 772.53 772.57 773.21 774.27 28 38 Shallow MW-4D 656.14 655.77 --------21.3 26.3 Deep MW-7D 766.70 ---766.12 -766.16 766.16 766.18 -33.5 38.5 Deep TABLE 6-9 HISTORIC WATER LEVEL MEASUREMENTS CLIFFSIDE STEAM STATION DUKE ENERGY CAROLINAS, LLC, MOORESBORO, NC P:\Duke Energy Carolinas\21. CLIFFSIDE\CSA Update\Tables\Table 6-9 Historic Water Level Measurements Page 5 of 5 Well ID Groundwater Elevation (NAVD 88) June 2015 Groundwater Elevation (NAVD 88) August 2015 Groundwater Elevation (NAVD 88) February 2016 Groundwater Elevation (NAVD 88) March 2016 Groundwater Elevation (NAVD 88) April 2016 Groundwater Elevation (NAVD 88) June 2016 Groundwater Elevation (NAVD 88) December 2016 Groundwater Elevation (NAVD 88) February 2017 Groundwater Elevation (NAVD 88) May 2017 Groundwater Elevation (NAVD 88) August 2017 Monitoring Zone Screened Interval (feet bgs) MW-8D 727.99 726.83 --726.99 726.84 725.58 726.03 726.49 726.25 29.8 34.8 Deep MW-8S 729.96 729.87 --730.05 729.98 729.82 729.98 730.06 729.86 2.9 17.9 Shallow U5-1D 755.44 754.59 --758.65 757.81 754.23 753.33 753.13 753.20 55 60 Deep U5-1S 755.99 754.99 --759.20 758.39 754.46 753.49 753.01 753.21 39 54 Shallow U5-2BR ---733.04 -728.97 723.28 722.23 724.06 722.40 100.3 105.3 Bedrock U5-2D 727.94 725.62 --733.08 731.04 725.12 731.43 726.45 725.49 72 77 Deep U5-2S-SL ----------50 65 Ash Pore Water U5-2S-SLA 737.89 735.12 --739.92 736.97 730.72 731.27 732.26 731.40 50 65 Ash Pore Water U5-3D 711.37 713.90 --720.28 719.00 ----73.8 78.8 Deep U5-3SA 717.85 715.73 -722.61 -719.16 ----35 50 Shallow U5-4BR 639.96 ---681.99 679.17 662.52 658.81 644.96 649.17 125.1 130.1 Bedrock U5-4BRA --------656.04 677.92 129 139 Bedrock U5-4D 671.18 691.89 --704.19 703.24 699.07 700.20 697.55 698.26 104.2 109.2 Deep U5-4S 699.54 698.73 --705.75 704.57 699.39 698.59 698.38 698.82 59.8 74.8 Shallow U5-5BR ------699.25 698.06 698.89 698.75 105.5 110.5 Bedrock U5-5D 704.12 ---705.40 704.06 704.04 703.83 703.90 703.79 65.5 69.5 Deep U5-6D 714.64 714.05 --715.94 729.47 714.40 714.39 714.51 714.09 56.5 61.5 Deep U5-6S 714.49 713.93 --715.73 714.47 714.28 715.24 714.36 713.99 37 52 Shallow U5-7D 724.47 735.20 ---738.14 ----71.5 76.8 Deep U5-7S 738.46 737.93 --741.23 740.99 ----22 37 Ash Pore Water U5-7SL 737.53 736.63 --740.74 740.50 ----56 66 Ash Pore Water U5-8BR --670.41 ---759.32 761.28 762.08 760.54 120.9 125.9 Bedrock U5-8D 760.91 760.39 --762.35 762.24 757.34 761.37 761.86 760.40 71 76 Deep U5-8S 762.37 761.89 --764.34 764.19 761.92 763.33 763.78 761.82 5 20 Shallow Prepared by: ALA Checked by: TCP Notes: ft - Feet bgs - Below ground surface NAVD 88 - North American Vertical Datum of 1988 Below Pump - Static water level is below dedicated pump, could not be measured - - No measurement taken TABLE 6-10 HORIZONTAL GROUNDWATER GRADIENTS AND VELOCITIES CLIFFSIDE STEAM STATION DUKE ENERGY CAROLINAS, LLC, MOORESBORO, NC P:\Duke Energy Carolinas\21. CLIFFSIDE\CSA Update\Tables\ Table 6-10 Horizontal Gradients and Velocities Page 1 of 1 Direction Data Points Gradient (ft per ft) Velocity (ft per yr) E/SE AB-3SL to AB-4SL 0.001 10.62 S U5-2S-SL* to U5-7S*0.039 580.61 N U5-1S to MW-36S 0.063 265.17 N AS-1SB to AS-2S 0.083 351.42 N AS-4S to AS-5S 0.086 362.40 N GWA-14S to GWA-11S 0.018 77.38 N MW-11S to GWA-22S 0.181 761.31 W AB-2S to GWA-40S 0.128 539.67 W AB-3BRUA to MW-8D 0.030 98.81 N MW-11D to MW-20D 0.135 447.45 E/NE GWA-14D to GWA-29D 0.018 59.12 N U5-5D to MW-38D 0.063 208.52 N MW-32BR to GWA-31BRA 0.030 272.02 E/NE GWA-14BR to GWA-29BRA 0.009 81.27 W MW-22BR to AB-5BR 0.028 250.50 N GWA-2BR to U5-4BR 0.054 486.28 Prepared by: DMY Checked by: KDF Notes: ft = feet yr = year 2. Geomean of hydraulic conductivities taken from Table 6-11 for each flow zone Ash Deep Bedrock Shallow 1. Water level measurements used for these calculations were collected on August 8th, 2017. Calculations for wells identified with an "*" used water level measurements from June 2016. 3. Mean effective porosity each flow zone taken from 2015 CSA, Table 11-8 (HDR, Inc) and CAP Part 2, Appendix A, Table 11-11 TABLE 6-11 VERTICAL HYDRAULIC GRADIENTS CLIFFSIDE STEAM STATION DUKE ENERGY CAROLINAS, LLC, MOORESBORO, NC P:\Duke Energy Carolinas\21. CLIFFSIDE\CSA Update\Tables\Table 6-11 Vertical Hydraulic Gradients Page 1 of 2 Well ID Potential Vertical Gradient Direction AB-03S to AB-03I 0.012 Downward AB-03SL to AB-03I 0.019 Downward AB-04S to AB-04SL -0.017 Upward AS-01S to AS-01D 0.067 Downward AS-02S to AS-02D 0.186 Downward AS-04S to AS-04D -0.274 Upward AS-05S to AS-05BRU 0.094 Downward AS-06S to AS-06D 0.005 Downward AS-07S to AS-07D 0.085 Downward BG-01S to BG-01D -0.004 Upward CLMW-03S to CLMW-03D 0.001 Downward CLMW-05S to CLMW-05D 0.640 Downward GWA-04S to GWA-04D 0.062 Downward GWA-05S to GWA-05BRU 0.083 Downward GWA-06S to GWA-06D 0.055 Downward GWA-10S to GWA-10D -0.002 Upward GWA-11S to GWA-11BRU 0.005 Downward GWA-12S to GWA-12BRU 0.399 Downward GWA-14S to GWA-14D -0.201 Upward GWA-20S to GWA-20D 0.265 Downward GWA-22S to GWA-22BRU 0.149 Downward GWA-25S to GWA-25D -0.001 Upward GWA-26S to GWA-26D -0.013 Upward GWA-28S to GWA-28BRU 0.154 Downward GWA-33S to GWA-33D 0.032 Downward GWA-35S to GWA-35D 0.002 Downward GWA-36S to GWA-36D 0.026 Downward GWA-37S to GWA-37D -0.075 Upward GWA-38S to GWA-38D 0.187 Downward GWA-43S to GWA-43D 0.318 Downward GWA-44S to GWA-44D -0.084 Upward GWA-45S to GWA-45D 0.245 Downward MW-08S to MW-08D 0.192 Downward MW-10S to MW-10D -0.018 Upward MW-11S to MW-11D 0.911 Downward MW-20DR to MW-20D -0.320 Upward MW-23DR to MW-23D 0.015 Downward MW-23S to MW-23DR 0.021 Downward MW-30S to MW-30D 0.017 Downward MW-34S to MW-34BRU 0.003 Downward Shallow to Deep Ash Pore to Shallow TABLE 6-11 VERTICAL HYDRAULIC GRADIENTS CLIFFSIDE STEAM STATION DUKE ENERGY CAROLINAS, LLC, MOORESBORO, NC P:\Duke Energy Carolinas\21. CLIFFSIDE\CSA Update\Tables\Table 6-11 Vertical Hydraulic Gradients Page 2 of 2 Well ID Potential Vertical Gradient Direction MW-36S to MW-36BRU 0.027 Downward MW-38S to MW-38D -0.032 Upward MW-40S to MW-40BRU -0.082 Upward U5-01S to U5-01D 0.001 Downward U5-02S/SL to U5-02D 0.296 Downward U5-04S to U5-04D 0.014 Downward U5-06S to U5-06D -0.007 Upward U5-08S to U5-08D 0.023 Downward AB-04D to AB-04BR 0.098 Downward AB-05BRU to AB-05BR 0.050 Downward AB-06D to AB-06BR 0.195 Downward AS-05BRU to AS-05BR 2.768 Downward GWA-21BRU to GWA-21BR -0.294 Upward GWA-24D to GWA-24BR -0.048 Upward GWA-28BRU to GWA-28BR 0.165 Downward GWA-31D to GWA-31BRA 0.108 Downward GWA-32D to GWA-32BR -0.068 Upward GWA-33D to GWA-33BR 0.305 Downward GWA-44D to GWA-44BR -0.255 Upward MW-21D to MW-21BR 0.090 Downward MW-22DR to MW-22BR -0.012 Upward MW-23DR to MW-23D 0.015 Downward MW-24DR to MW-24D -0.112 Upward MW-32D to MW-32BR -0.044 Upward U5-02D to U5-02BR 0.123 Downward U5-04BRA to U5-04BR 2.410 Downward U5-08D to U5-08BR -0.003 Upward Prepared by: ALA Checked by: MCM Water level data collected August 2017 Deep to Bedrock Shallow to Deep (continued) TABLE 6-12 IN-SITU HYDRAULIC CONDUCTIVITIES CLIFFSIDE STEAM STATION DUKE ENERGY CAROLINAS, LLC, MOORESBORO, NC P:\Duke Energy Carolinas\21. CLIFFSIDE\CSA Update\Tables\ Table 6-12 In-Situ Hydraulic Conductivities Page 1 of 8 Measured Geometric Mean Measured Geometric Mean Slug In Test 1 8.00E-03 2.27E+01 Slug Out Test 2 7.60E-03 2.15E+01 Slug In Test 1 6.60E-03 1.87E+01 Slug Out Test 2 6.10E-03 1.73E+01 Slug In Test 1 8.40E-04 2.38E+00 Slug Out Test 2 5.60E-04 1.59E+00 Slug In Test 1 5.90E-04 1.67E+00 Slug Out Test 2 3.60E-03 1.02E+01 Slug In Test 1 3.40E-03 9.64E+00 Slug Out Test 2 3.30E-03 9.35E+00 Slug In Test 1 1.40E-03 3.97E+00 Slug Out Test 2 1.50E-03 4.25E+00 Slug In Test 1 1.20E-02 3.40E+01 Slug Out Test 2 3.80E-02 1.08E+02 Slug In Test 1 4.80E-05 1.36E-01 Slug Out Test 2 7.90E-05 2.24E-01 Slug In Test 1 1.80E-03 5.10E+00 Slug Out Test 2 1.20E-03 3.40E+00 1.98E-03 5.61E+00 3.80E-02 1.08E+02 4.80E-05 1.36E-01 Prepared by: ALA Checked by: RAG/DMY Notes: Slug Tests results from2015 CSA (HDR, 2015) and 2016 CSA Supplement (HDR, 2016) Slug tests were analyzed using the Bouwer-Rice mathmatical model, unless where indicated. cm/sec - centimeter per second ft/day - feet per day -- No statistics necessary, when only one slug test analyzed GEOMETRIC MEAN LOWEST CONDUCTIVITY HIGHEST CONDUCTIVITY Ash Pore Water 4.11E+00 Well ID Slug Test Slug Test Number 1.45E-03 AB-3SL U5-7SL AS-7S Hydraulic Conductivity (cm/sec) 6.16E-05 1.47E-03 AB-4S AB-4SL AB-5S AB-6S IB-1S IB-3S 1.75E-01 4.17E+00 6.35E-03 6.86E-04 1.46E-03 1.94E+00 4.13E+00 9.50E+00 6.05E+01 1.80E+01 3.35E-03 2.14E-02 Hydraulic Conductivity (ft/day) 2.21E+017.80E-03 TABLE 6-12 IN-SITU HYDRAULIC CONDUCTIVITIES CLIFFSIDE STEAM STATION DUKE ENERGY CAROLINAS, LLC, MOORESBORO, NC P:\Duke Energy Carolinas\21. CLIFFSIDE\CSA Update\Tables\ Table 6-12 In-Situ Hydraulic Conductivities Page 2 of 8 Measured Geometric Mean Measured Geometric Mean Slug In Test 1 2.00E-04 5.67E-01 Slug Out Test 2 1.40E-04 3.97E-01 Slug In Test 1 3.60E-04 1.02E+00 Slug Out Test 2 2.90E-04 8.22E-01 Slug In Test 1 1.20E-03 3.40E+00 Slug Out Test 2 1.10E-03 3.12E+00 Slug In Test 1 5.60E-03 1.59E+01 Slug Out Test 2 4.50E-03 1.28E+01 Slug In Test 1 1.10E-03 3.12E+00 Slug Out Test 2 3.60E-04 1.02E+00 Slug In Test 1 5.20E-04 1.47E+00 Slug Out Test 2 3.50E-04 9.92E-01 Slug In Test 1 9.60E-04 2.72E+00 Slug Out Test 2 1.20E-03 3.40E+00 Slug In Test 1 8.50E-03 2.41E+01 Slug Out Test 2 8.70E-03 2.47E+01 Slug In Test 1 1.40E-02 3.97E+01 Slug Out Test 2 1.50E-02 4.25E+01 Slug In Test 1 5.90E-04 1.67E+00 Slug Out Test 2 1.70E-03 4.82E+00 Slug In Test 1 9.90E-04 2.81E+00 Slug Out Test 2 1.20E-03 3.40E+00 Slug In Test 1 1.60E-03 4.54E+00 Slug Out Test 2 2.50E-03 7.09E+00 Slug In Test 1 1.50E-03 4.25E+00 Slug Out Test 2 1.90E-03 5.39E+00 Slug In Test 1 1.90E-04 5.39E-01 Slug Out Test 2 2.60E-04 7.37E-01 Slug In Test 1 2.10E-04 5.95E-01 Slug Out Test 2 5.30E-04 1.50E+00 Slug In Test 1 9.50E-03 2.69E+01 Slug Out Test 2 5.70E-03 1.62E+01 GWA-34S Slug In Test 1 5.34E-03 --15.15 -- GWA-35S Slug In Test 1 6.44E-04 --1.826 -- GWA-36S Slug In Test 1 5.99E-04 --1.699 -- GWA-37S Slug In Test 1 4.28E-04 --1.212 -- GWA-43S Slug In Test 1 5.76E-04 --1.632 -- GWA-44S Slug In Test 1 1.24E-03 --3.516 -- Slug In Test 1 1.10E-03 3.12E+00 Slug Out Test 2 7.50E-04 2.13E+00 Shallow Zone 3.26E+00 1.42E+01 1.78E+00 1.21E+00 2.44E+01 4.11E+01 2.84E+00 3.09E+00 3.04E+00 4.74E-01 AB-3I AS-1SB AS-2S Well ID Slug Test Slug Test Number Hydraulic Conductivity (cm/sec) Hydraulic Conductivity (ft/day) AS-5S BG-1S 1.15E-03 5.02E-03 GWA-2S GWA-4S GWA-5S GWA-11S 8.60E-03 1.45E-02 1.00E-03 1.09E-03 1.07E-03 AB-1S 1.67E-04 6.29E-04 4.27E-04 AB-2S 3.23E-04 9.16E-01 GWA-12S GWA-14S GWA-20S GWA-26S 2.00E-03 1.69E-03 2.22E-04 3.34E-04 5.67E+00 4.79E+00 6.30E-01 9.46E-01 7.36E-03 9.08E-04 2.09E+01 2.57E+00 GWA-33S IB-2AL TABLE 6-12 IN-SITU HYDRAULIC CONDUCTIVITIES CLIFFSIDE STEAM STATION DUKE ENERGY CAROLINAS, LLC, MOORESBORO, NC P:\Duke Energy Carolinas\21. CLIFFSIDE\CSA Update\Tables\ Table 6-12 In-Situ Hydraulic Conductivities Page 3 of 8 Measured Geometric Mean Measured Geometric Mean Slug In Test 1 6.90E-04 1.96E+00 Slug Out Test 2 1.80E-04 5.10E-01 MW-23S Slug In Test 1 1.13E-03 --3.216 -- Slug In Test 1 3.10E-03 8.79E+00 Slug Out Test 2 2.00E-03 5.67E+00 Slug In Test 1 7.00E-04 1.98E+00 Slug Out Test 2 1.00E-04 2.83E-01 Slug In Test 1 1.40E-04 3.97E-01 Slug Out Test 2 4.50E-04 1.28E+00 Slug In Test 1 9.90E-03 2.81E+01 Slug Out Test 2 7.50E-03 2.13E+01 1.09E-03 3.09E+00 1.50E-02 4.25E+01 1.00E-04 2.83E-01 Prepared by: ALA Checked by: RAG/DMY Notes: Slug Tests results from CSA 2015 Appendix H, HDR Slug tests were analyzed using the Bouwer-Rice mathmatical model, unless where indicated. cm/sec - centimeter per second ft/day - feet per day -- No statistics necessary, when only one slug test analyzed Hydraulic Conductivity (cm/sec) Hydraulic Conductivity (ft/day) GEOMETRIC MEAN LOWEST CONDUCTIVITY HIGHEST CONDUCTIVITY Shallow Zone (continued) Well ID Slug Test Slug Test Number MW-40S 8.62E-03 2.44E+01 MW-36S MW-38S 3.52E-04 2.49E-03 2.65E-04 2.51E-04 9.99E-01 7.06E+00 7.50E-01 7.11E-01 IB-2I MW-30S TABLE 6-12 IN-SITU HYDRAULIC CONDUCTIVITIES CLIFFSIDE STEAM STATION DUKE ENERGY CAROLINAS, LLC, MOORESBORO, NC P:\Duke Energy Carolinas\21. CLIFFSIDE\CSA Update\Tables\ Table 6-12 In-Situ Hydraulic Conductivities Page 4 of 8 Measured Geometric Mean Measured Geometric Mean Slug In Test 1 7.50E-05 2.13E-01 Slug Out Test 2 6.30E-05 1.79E-01 Slug In Test 1 1.50E-04 4.25E-01 Slug Out Test 2 1.80E-04 5.10E-01 Slug In Test 1 1.10E-03 3.12E+00 Slug Out Test 2 1.30E-03 3.69E+00 Slug In Test 1 1.50E-04 4.25E-01 Slug Out Test 2 2.00E-04 5.67E-01 GWA-5BRU Slug In Test 3.80E-07 --1.08E-03 -- Slug In Test 1 4.90E-05 1.39E-01 Slug Out Test 2 3.80E-05 1.08E-01 Slug In Test 1 1.60E-04 4.54E-01 Slug Out Test 2 2.50E-04 7.09E-01 Slug In Test 1 5.20E-04 1.47E+00 Slug Out Test 2 4.40E-04 1.25E+00 Slug In Test 1 1.50E-05 4.25E-02 Slug Out Test 2 1.00E-05 2.83E-02 Slug In Test 1 4.20E-04 1.19E+00 Slug Out Test 2 3.90E-04 1.11E+00 GWA-35D Slug In Test 1 1.93E-03 --5.47 -- GWA-36D Slug In Test 1 5.01E-05 --0.142 -- GWA-37D Slug In Test 1 5.34E-04 --1.515 -- GWA-38D Slug In Test 1 1.91E-05 --0.054 -- GWA-43D Slug In Test 1 2.93E-05 --0.083 -- GWA-44D Slug In Test 1 4.12E-04 --1.168 -- GWA-45D Slug In Test 1 3.64E-04 --1.033 -- GWA-47D Slug In Test 1 3.26E-04 --0.925 -- Slug In Test 1 9.30E-04 2.64E+00 Slug Out Test 2 5.50E-04 1.56E+00 1.22E-01 5.67E-01 Deep Zone GWA-11BRU GWA-12BRU GWA-21BRU GWA-28BRU GWA-30BRU IB-2BRU 1.36E+00 3.47E-02 1.15E+00 1.20E-03 1.73E-04 4.32E-05 2.00E-04 4.78E-04 1.22E-05 4.05E-04 7.15E-04 2.03E+00 6.87E-05 1.64E-04 AB-3BRU AB-5BRU AS-3BRU AS-5BRU 1.95E-01 4.66E-01 3.39E+00 4.91E-01 Well ID Slug Test Slug Test Number Hydraulic Conductivity (cm/sec) Hydraulic Conductivity (ft/day) TABLE 6-12 IN-SITU HYDRAULIC CONDUCTIVITIES CLIFFSIDE STEAM STATION DUKE ENERGY CAROLINAS, LLC, MOORESBORO, NC P:\Duke Energy Carolinas\21. CLIFFSIDE\CSA Update\Tables\ Table 6-12 In-Situ Hydraulic Conductivities Page 5 of 8 Measured Geometric Mean Measured Geometric Mean Slug In Test 1 1.20E-03 3.40E+00 Slug Out Test 2 1.40E-03 3.97E+00 Slug In Test 1 8.80E-04 2.49E+00 Slug Out Test 2 8.90E-04 2.52E+00 MW-40BRU Slug In Test 1 2.40E-06 --6.80E-03 -- Slug In Test 1 1.60E-03 4.54E+00 Slug Out Test 2 1.40E-03 3.97E+00 Slug In Test 1 7.20E-05 2.04E-01 Slug Out Test 2 9.80E-05 2.78E-01 Slug In Test 1 9.50E-04 2.69E+00 Slug Out Test 2 9.80E-04 2.78E+00 Slug In Test 1 5.00E-03 1.42E+01 Slug Out Test 2 5.30E-03 1.50E+01 Slug In Test 1 1.40E-03 3.97E+00 Slug Out Test 2 2.20E-03 6.24E+00 Slug In Test 1 2.70E-04 7.65E-01 Slug Out Test 2 2.40E-04 6.80E-01 Slug In Test 1 2.20E-03 6.24E+00 Slug Out Test 2 2.40E-03 6.80E+00 Slug In Test 1 1.10E-03 3.12E+00 Slug Out Test 2 1.40E-03 3.97E+00 Slug In Test 1 5.40E-06 1.53E-02 Slug Out Test 2 1.60E-06 4.54E-03 Slug In Test 1 5.70E-04 1.62E+00 Slug Out Test 2 5.70E-04 1.62E+00 Slug In Test 1 5.10E-05 1.45E-01 Slug Out Test 2 5.10E-05 1.45E-01 Slug In Test 1 2.20E-03 6.24E+00 Slug Out Test 2 1.60E-03 4.54E+00 Slug In Test 1 1.90E-03 5.39E+00 Slug Out Test 2 2.90E-03 8.22E+00 Slug In Test 1 1.80E-03 5.10E+00 Slug Out Test 2 1.90E-03 5.39E+00 Slug In Test 1 2.10E-04 5.95E-01 Slug Out Test 2 2.40E-04 6.80E-01 Slug In Test 1 3.50E-03 9.92E+00 Slug Out Test 2 3.60E-03 1.02E+01 GWA-26D Slug In Test 1 1.50E-05 --4.25E-02 -- 3.67E+00 2.51E+008.85E-04 MW-34BRU MW-36BRU 1.30E-03 6.36E-01 1.01E+01 7.22E-01 6.51E+00 3.52E+00 8.33E-03 1.62E+00 1.45E-01 5.32E+00 6.65E+00 5.24E+00 1.50E-03 8.40E-05 9.65E-04 5.15E-03 1.75E-03 2.55E-04 2.30E-03 1.24E-03 2.94E-06 5.70E-04 5.10E-05 1.88E-03 2.35E-03 1.85E-03 2.24E-04 3.55E-03 AS-6D AS-7D BG-1D BG-2D GWA-4D GWA-6D GWA-10D GWA-20D GWA-23D GWA-24D GWA-25D AB-1D AB-2D AB-4D AB-6D AS-1D 4.24E+00 2.38E-01 2.74E+00 1.46E+01 4.97E+00 Deep Zone (continued) Well ID Slug Test Slug Test Number Hydraulic Conductivity (cm/sec) Hydraulic Conductivity (ft/day) TABLE 6-12 IN-SITU HYDRAULIC CONDUCTIVITIES CLIFFSIDE STEAM STATION DUKE ENERGY CAROLINAS, LLC, MOORESBORO, NC P:\Duke Energy Carolinas\21. CLIFFSIDE\CSA Update\Tables\ Table 6-12 In-Situ Hydraulic Conductivities Page 6 of 8 Measured Geometric Mean Measured Geometric Mean Slug In Test 1 4.90E-03 1.39E+01 Slug Out Test 2 5.00E-03 1.42E+01 Slug In Test 1 2.60E-03 7.37E+00 Slug Out Test 2 3.30E-03 9.35E+00 Slug In Test 1 1.10E-04 3.12E-01 Slug Out Test 2 7.80E-05 2.21E-01 Slug In Test 1 1.40E-04 3.97E-01 Slug Out Test 2 6.70E-05 1.90E-01 Slug In Test 1 9.00E-03 2.55E+01 Slug Out Test 2 1.60E-02 4.54E+01 Slug In Test 1 1.90E-04 5.39E-01 Slug Out Test 2 2.00E-04 5.67E-01 Slug In Test 1 3.30E-05 9.35E-02 Slug Out Test 2 1.60E-05 4.54E-02 Slug In Test 1 1.10E-05 3.12E-02 Slug Out Test 2 1.20E-05 3.40E-02 Slug In Test 1 6.50E-04 1.84E+00 Slug Out Test 2 5.60E-04 1.59E+00 Slug In Test 1 2.40E-07 6.80E-04 Slug Out Test 2 3.80E-07 1.08E-03 Slug In Test 1 5.70E-05 1.62E-01 Slug Out Test 2 4.20E-05 1.19E-01 Slug In Test 1 8.60E-03 2.44E+01 Slug Out Test 2 7.70E-03 2.18E+01 Slug In Test 1 4.10E-05 1.16E-01 Slug Out Test 2 1.10E-05 3.12E-02 U5-5D Slug In Test 1 1.10E-05 --3.12E-02 -- Slug In Test 1 1.40E-03 3.97E+00 Slug Out Test 2 1.80E-03 5.10E+00 U5-7D Slug In Test 1 5.70E-07 --1.62E-03 -- Slug In Test 1 2.00E-04 5.67E-01 Slug Out Test 2 2.10E-04 5.95E-01 2.41E-04 6.82E-01 1.60E-02 4.54E+01 2.40E-07 6.80E-04 Prepared by: ALA Checked by: RAG/DMY Notes: Slug Tests results from CSA 2015 Appendix H, HDR cm/sec - centimeter per second Slug tests were analyzed using the Bouwer-Rice mathmatical model, unless where indicated. ft/day - feet per day -- No statistics necessary, when only one slug test analyzed LOWEST CONDUCTIVITY HIGHEST CONDUCTIVITY GEOMETRIC MEAN 6.51E-02 3.26E-02 Deep Zone (continued) Well ID Slug Test Slug Test Number Hydraulic Conductivity (cm/sec) Hydraulic Conductivity (ft/day) 1.71E+00 8.56E-04 1.39E-01 2.31E+01 6.02E-02 4.50E+00 5.81E-01 1.59E-03 2.05E-04 3.02E-07 4.89E-05 8.14E-03 2.12E-05 1.40E+01 8.30E+00 2.63E-01 2.75E-01 3.40E+01 5.53E-01 1.20E-02 6.03E-04 U5-3D U5-6D U5-8D 4.95E-03 U5-2D 2.93E-03 9.26E-05 9.69E-05 GWA-33D IB-1D IB-3D IB-4D MW-30D MW-32D 1.95E-04 2.30E-05 1.15E-05 MW-38D MW-42D U5-1D GWA-27D GWA-32D TABLE 6-12 IN-SITU HYDRAULIC CONDUCTIVITIES CLIFFSIDE STEAM STATION DUKE ENERGY CAROLINAS, LLC, MOORESBORO, NC P:\Duke Energy Carolinas\21. CLIFFSIDE\CSA Update\Tables\ Table 6-12 In-Situ Hydraulic Conductivities Page 7 of 8 Measured Geometric Mean Measured Geometric Mean AB-3BR Slug In Test 1 4.09E-05 --1.16E-01 -- Slug In Test 1 8.70E-04 2.47E+00 Slug Out Test 2 1.00E-03 2.83E+00 AB-5BR Slug In Test 1 1.74E-03 --4.93E+00 -- Slug In Test 1 1.80E-03 5.10E+00 Slug Out Test 2 2.00E-03 5.67E+00 Slug In Test 1 2.50E-04 7.09E-01 Slug Out Test 2 2.60E-04 7.37E-01 AS-6BR Slug In Test 1 3.90E-06 --1.11E-02 -- BG-1BR Slug In Test 1 1.00E-05 --2.83E-02 -- Slug In Test 1 2.70E-04 7.65E-01 Slug Out Test 2 1.90E-04 5.39E-01 Slug In Test 1 3.40E-03 9.64E+00 Slug Out Test 2 3.40E-03 9.64E+00 Slug In Test 1 8.80E-04 2.49E+00 Slug Out Test 2 4.70E-04 1.33E+00 GWA-24BR Slug In Test 1 2.43E-03 --6.88E+00 -- Slug In Test 1 2.50E-04 7.09E-01 Slug Out Test 2 2.30E-04 6.52E-01 GWA-29BR Slug In Test 1 4.60E-07 --1.30E-03 -- Slug In Test 1 2.20E-03 6.24E+00 Slug Out Test 2 3.00E-03 8.50E+00 GWA-31BR Slug In Test 1 3.53E-07 --1.00E-03 -- Slug In Test 1 3.20E-05 9.07E-02 Slug Out Test 2 1.80E-05 5.10E-02 Slug In Test 1 1.10E-03 3.12E+00 Slug Out Test 2 1.20E-03 3.40E+00 GWA-44BR Slug In Test 1 4.45E-02 --1.26E+02 -- GWA-48BR Slug In Test 1 1.84E-04 --5.22E-01 -- Slug In Test 1 9.30E-04 2.64E+00 Slug Out Test 2 1.10E-03 3.12E+00 Slug In Test 1 4.00E-05 1.13E-01 Slug Out Test 2 4.10E-05 1.16E-01 Slug In Test 1 3.60E-04 1.02E+00 Slug Out Test 2 3.90E-04 1.11E+00 2.64E+00 5.38E+00 Well ID Slug Test Slug Test Number Hydraulic Conductivity (cm/sec) Hydraulic Conductivity (ft/day) 7.23E-01 6.42E-01 9.64E+00 1.82E+00 6.80E-01 7.28E+00 6.80E-02 3.26E+00 2.87E+00 1.15E-01 1.06E+00 2.40E-05 Bedrock GWA-30BR GWA-32BR AB-4BR AB-6BR AS-5BR 1.15E-03 1.01E-03 4.05E-05 3.75E-04 GWA-33BR IB-4BR MW-21BR MW-22BR 9.33E-04 1.90E-03 2.55E-04 2.26E-04 3.40E-03 6.43E-04 2.40E-04 2.57E-03 GWA-13BR GWA-14BR GWA-21BR GWA-28BR TABLE 6-12 IN-SITU HYDRAULIC CONDUCTIVITIES CLIFFSIDE STEAM STATION DUKE ENERGY CAROLINAS, LLC, MOORESBORO, NC P:\Duke Energy Carolinas\21. CLIFFSIDE\CSA Update\Tables\ Table 6-12 In-Situ Hydraulic Conductivities Page 8 of 8 Measured Geometric Mean Measured Geometric Mean Slug In Test 1 9.60E-04 2.72E+00 Slug Out Test 2 1.10E-03 3.12E+00 U5-2BR Slug In Test 1 5.53E-04 --1.57E+00 -- 3.02E-04 8.57E-01 4.45E-02 1.26E+02 3.53E-07 1.00E-03 Prepared by: ALA Checked by: RAG/DMY Notes: Slug Tests results from CSA 2015 Appendix H, HDR Slug tests were analyzed using the Bouwer-Rice mathmatical model, unless where indicated. cm/sec - centimeter per second ft/day - feet per day -- No statistics necessary, when only one slug test analyzed LOWEST CONDUCTIVITY HIGHEST CONDUCTIVITY GEOMETRIC MEAN Bedrock (continued) Well ID Slug Test Slug Test Number Hydraulic Conductivity (cm/sec) Hydraulic Conductivity (ft/day) 2.91E+001.03E-03MW-32BR Source: HDR, Comprehensive Site Assessment Report Cliffside Steam Station Ash Basin, August 18, 2015 Page 1 of 1 Table 6-13. Hydrostratigraphic Layer Properties - Horizontal Hydraulic Conductivity Hydrostratigrap hic Unit N Geometric Mean (cm/sec) Geometric Mean + 1SD (cm/sec) Geometric Mean - 1SD (cm/sec) Geometric Median (cm/sec) Minimum (cm/sec) Maximum (cm/sec) Ash 12 1.4E-03 5.7E-03 3.3E-04 1.6E-03 5.8E-05 7.8E-03 Fill 4 7.6E-05 1.8E-04 3.3E-05 9.0E-05 2.5E-05 1.7E-04 Alluvium (S) 3 7.4E-04 1.3E-03 4.3E-04 9.2E-04 4.0E-04 1.1E-03 M1 23 4.8E-04 2.8E-03 8.2E-05 3.0E-04 7.8E-06 1.5E-02 M2 14 3.1E-04 1.1E-03 9.2E-05 4.4E-04 3.1E-05 2.1E-03 Transition Zone (TZ) 23 5.7E-04 2.3E-03 1.4E-04 9.1E-04 5.1E-05 5.2E-03 Bedrock (BR) 97 7.3E-05 5.3E-04 1.0E-05 4.9E-05 2.4E-06 5.0E-03 Notes: 1. Hydraulic Conductivity, ‘k,’ values have an approximate lognormal distribution. Geometric mean, median, and standard deviation estimated by taking the log of the values and running standard statistics on the log values, then converting those values back. 2. Dataset derived from CSA Investigation and historical reports. Refer to tables 11-3, 11-5, and 11-7 for historic conductivity data. Source: HDR, Comprehensive Site Assessment Report Cliffside Steam Station Ash Basin, August 18, 2015 Page 1 of 1 Table 6-14. Hydrostratigraphic Layer Properties - Vertical Hydraulic Conductivity Hydrostratigraphic Unit N Geometric Mean (cm/sec) Geometric Mean + 1SD (cm/sec) Geometric Mean - 1SD (cm/sec) Geometric Median (cm/sec) Minimum (cm/sec) Maximum (cm/sec) Ash 14 7.3E-05 3.1E-04 1.7E-05 7.1E-05 1.1E-05 2.0E-03 Fill 9 1.3E-05 6.3E-05 2.8E-06 1.5E-05 7.4E-07 8.6E-05 Alluvium (S) 3 1.6E-05 1.1E-03 2.3E-07 4.1E-05 1.5E-07 6.2E-04 M1 20 5.1E-05 2.3E-04 1.1E-05 5.3E-05 6.7E-07 4.8E-04 M2 6 8.5E-05 5.0E-04 1.4E-05 1.7E-04 5.5E-06 5.1E-04 Transition Zone (TZ) 0 - - - - - - Bedrock (BR) 0 - - - - - - Notes: 1. Hydraulic Conductivity, ‘k,’ values have an approximate lognormal distribution. Geometric mean, median, and standard deviation estimated by taking the log of the values and running standard statistics on the log values, then converting those values back. 2. Vertical hydraulic conductivity values for TZ and BR could not be measured in the field or laboratory. Vertical and horizontal conductivity for the layers are unlikely to be equal. Consider to be equal as an initial assumption, and adjust as necessary during flow model calibration. 3. Dataset derived from CSA Investigation and historical reports. Refer to tables 11-3, 11-5, and 11-7 for historic conductivity data. Source: HDR, Comprehensive Site Assessment Report Cliffside Steam Station Ash Basin, August 18, 201 5 Page 1 of 1 Table 6-15. Estimated Effective Porosity/Specific Yield and Specific Storage for Upper Hydrostratigraphic Units (A, F, S, M1, and M2) Hydrostratigraphic Unit N Mean (%) Median (%) Mean + 1SD (%) Mean - 1SD (%) Minimum (%) Maximum (%) Ash 17 13.7%16.5%21.2%6.1%3.8%25.0% Fill 11 19.9%19.0%27.6%12.2%5.0%31.0% Alluvium (S)17 17.8%18.5%29.6%6.1%3.0%40.0% M1 30 24.6%26.3%30.5%18.6%9.0%31.0% M2 6 28.9%29.3%32.0%25.8%24.0%32.5% Notes: 2. Effective porosity and specific yield are not synonymous. For practical purposes, they may be estimated as approximately equal in value. 3. Specific Storage ranges based on published values (Domenico and Mifflin, 1965). Alluvium and M1 fall within the same range of values. 4. Alluvium effective porosity/specific yield values derived from other CSA investigation sites. Allen (N=5), porosity/specific yield statistical analysis. 5. Historic grain size distributions were used in the statistical analysis for M1 (N=16) and M2 (N=2). Refer to Appendix H for historic data reports. Effective Porosity/Specific Yield (% 1. Effective porosity/specific yield estimated from soil testing using Fetter/Bear Diagrams (Johnson, 1967). Buck (N=2), Cliffside (N=2), and Dan River (N=8) Steam Stations' initial data used in Alluvium effective 3.0E-04 - 1.5E-05 1.5E-05 - 6.2E-05 Specific Storage (1/ft) - 6.1E-05 - 4.0E-05 3.0E-04 - 1.5E-05 Source: HDR, Comprehensive Site Assessment Supplement 2 Cliffside Steam Station Ash Basin, August 8, 2016 Page 1 of 1 Hydrostratigraphic Unit Transition Zone (TZ) Bedrock (BR) - Fractured Bedrock (BR) - Dense Notes: 1. Ranges based on published values (Domenico and Mifflin, 1965; Singhal and Gupta, 2010). 2. Effective porosity and specific yield are not synonymous. For practical purposes, they may be estimated as approximately equal in value. 3. Table revised 07/13/2016. Table 6-16: Total Porosity, Secondary (Effective) Porosity/Specific Yield, and Specific Storage for Lower Hydrostratigraphic Units (TZ and BR) 2.0 - 5.0 5 - 10 < 1.0E-06 0 - 3 0 - 5 < 1.0E-06 Secondary (Effective) Porosity / Specific Yield (%) Total Porosity (%)Specific Storage (1/ft) 5.0 - 10.0 5 - 15 1.0E-06 - 2.1E-05 Source: HDR, Comprehensive Site Assessment Report Cliffside Steam Station Ash Basin, August 18, 2015 Page 1 of 1 Hydrostratigraphic Unit N Mean (%) Median (%) Mean + 1SD (%) Mean - 1SD (%) Minimum (%) Maximum (%) Ash 16 45.3%45.0%48.8%41.8%38.0%53.3% Fill 12 43.5%44.0%44.9%42.1%41.0%45.5% Alluvium (S)15 43.9%44.0%46.1%41.7%38.3%47.4% M1 16 43.6%43.9%46.0%41.3%38.0%47.8% M2 5 41.7%42.0%45.0%38.4%36.5%45.5% Notes: 1. Total porosity estimated from soil testing, using both Fetter/Bear Diagrams (Johnson, 1967) and results from Laboratory Conductivity testing. 2. Alluvium total porosity values derived from other CSA investigation sites. Allen (N=6), Buck (N=1), statistical analysis. Cliffside (N=2), and Dan River (N=6) Steam Stations' initial data used in Alluvium total porosity Table 6-17. Total Porosity for Upper Hydrostratigraphic Units (A, F, S, M1, and M2) Table 6-18. Field Permeability Test Results Source: HDR, Comprehensive Site Assessment Report Cliffside Steam Station Ash Basin, August 18, 2015 Page 1 of 2 Borehole Test Category Depth 1 of Test (ft bgs) Depth 2 of Test (ft bgs) Vertical Hydraulic Conductivity 'k' (cm/sec) Horizontal Hydraulic Conductivity 'k' (cm/sec) Hydrostratigraphic Layer AB-3BRU Well Point - Falling Head 115.5 120.5 - 2.6E-05 BR AB-3SL Flush Bottom 32.0 - 2.0E-03 - A AB-3SL Flush Bottom 42.0 - 2.0E-02 - A AB-3SL Well Point - Falling Head 42.0 47 - 4.6E-04 A AB-4BR Packer Test 81.0 86 - 8.9E-06 BR AB-4BR Packer Test 90.0 95 - 1.1E-04 BR AB-4BR Packer Test 104.5 109.5 - 1.4E-04 BR AB-5S Flush Bottom 19.5 - 2.9E-05 - A AB-5S Well Point - Constant Head 19.5 24.5 - 1.8E-03 A AB-5S Flush Bottom 38.0 - 3.4E-05 - M1 AB-5S Well Point - Constant Head 38.0 43 - 1.1E-03 M1 AB-6BR Packer Test 75.0 80 - 5.1E-04 BR AB-6BR Packer Test 85.0 90 - 3.2E-05 BR AB-6BR Packer Test 96.0 101 - 2.8E-05 BR AS-5BR Packer Test 75.0 79.8 - 9.6E-05 BR AS-5BR Packer Test 91.5 96.3 - 4.4E-06 BR AS-5BR Packer Test 100.2 105 - 3.7E-06 BR AS-7BR Packer Test 104.0 108.7 - 1.6E-05 BR AS-7BR Packer Test 122.0 126.7 - 9.2E-06 BR AS-7BR Packer Test 132.0 136.7 - 9.8E-06 BR AS-7D Well Point - Falling Head 62.5 67.5 - 3.9E-04 TZ AS-7S Flush Bottom 34.3 - 1.1E-05 - A AS-7S Well Point - Falling Head 35.0 40 - 4.0E-06 A BG-1BR Well Point - Falling Head 60.7 65.4 - 5.9E-05 TZ BG-1BR Packer Test 87.9 92.6 - 2.2E-05 BR BG-1BR Packer Test 92.9 97.6 - 5.0E-05 BR BG-1BR Packer Test 97.9 102.6 - 7.2E-05 BR BG-2D Well Point - Falling Head 47.0 51.5 - 1.3E-04 TZ GWA-12BRU Well Point - Falling Head 44.9 49.9 - 1.1E-05 TZ GWA-14S Well Point - Falling Head 7.5 12.3 - 9.9E-05 M1 GWA-14S Well Point - Falling Head 28.0 33 - 3.4E-05 M1 GWA-1BRU Well Point - Falling Head 9.0 14 - 2.0E-05 BR GWA-24D Well Point - Falling Head 25.8 31.4 - 2.3E-04 TZ GWA-27D Well Point - Falling Head 21.3 24.3 - 9.1E-04 TZ GWA-27S Well Point - Falling Head 2.1 7.1 - 7.8E-06 M1 GWA-27S Well Point - Constant Head 14.8 18 - 5.6E-03 M1 GWA-28BR Packer Test 73.0 77.8 - 1.8E-04 BR GWA-28BR Packer Test 79.0 83.8 - 8.5E-06 BR GWA-28BR Packer Test 85.0 89.8 - 2.1E-04 BR GWA-28BRU Well Point - Falling Head 46.9 51.9 - 5.1E-06 BR GWA-28BRU Well Point - Falling Head 50.6 55.6 - 3.1E-06 BR GWA-29BR Packer Test 40.0 44.8 - 1.4E-05 BR GWA-29BR Packer Test 50.0 54.8 - 1.5E-05 BR GWA-2D Well Point - Falling Head 28.0 33 - 1.0E-05 BR GWA-30BR Packer Test 57.0 61.75 - 9.3E-06 BR GWA-30BR Packer Test 63.0 67.75 - 2.5E-04 BR GWA-30BRU Well Point-Falling Head 27.5 32.3 - 1.9E-05 BR GWA-31BR Packer Test 30.0 35 - 3.4E-05 BR GWA-31BR Packer Test 46.0 51 - 5.0E-06 BR GWA-32BR Packer Test 50.0 54.75 - 3.6E-05 BR GWA-32BR Packer Test 60.0 64.75 - 3.4E-05 BR GWA-32BR Packer Test 70.0 74.75 - 4.7E-06 BR GWA-5BRU Well Point - Falling Head 30.7 35.7 - 3.8E-07 BR GWA-6D Well Point - Falling Head 39.5 45.5 - 6.5E-05 TZ GWA-6S Flush Bottom 5.0 - 8.3E-06 - M1 GWA-6S Well Point - Constant Head 5.0 10 - 2.5E-04 M1 GWA-6S Well Point - Falling Head 35.0 40 - 7.5E-05 M2 GWA-6S Flush Bottom 35.0 - 2.3E-04 - M2 IB-2AL Flush Bottom 43.5 - 2.1E-05 - M1 IB-2AL Well Point - Constant Head 43.5 48.5 - 2.5E-04 M1 IB-2BRU Well Point - Falling Head 88.0 93 - 1.2E-05 BR IB-4B Flush Bottom 14.0 - 1.2E-05 - A IB-4B Well Point - Falling Head 14.0 19 - 5.8E-05 A IB-4BR Well Point - Falling Head 43.4 48.4 - 2.2E-04 TZ IB-4BR Packer Test 69.8 75.2 - 3.0E-04 BR IB-4BR Packer Test 77.3 82.7 - 6.9E-06 BR IB-4BR Packer Test 93.3 98.7 - 5.5E-06 BR Table 6-18. Field Permeability Test Results Source: HDR, Comprehensive Site Assessment Report Cliffside Steam Station Ash Basin, August 18, 2015 Page 2 of 2 Borehole Test Category Depth 1 of Test (ft bgs) Depth 2 of Test (ft bgs) Vertical Hydraulic Conductivity 'k' (cm/sec) Horizontal Hydraulic Conductivity 'k' (cm/sec) Hydrostratigraphic Layer MW -21BR Well Point - Constant Head 46.8 50.8 - 1.9E-03 TZ MW -21BR Well Point - Falling Head 46.8 50.8 - 1.2E-03 TZ MW -21BR Packer Test 75.0 80.5 - 1.9E-05 BR MW -21BR Packer Test 81.0 86.5 - 4.4E-05 BR MW -21BR Packer Test 91.0 95.8 - 2.3E-05 BR MW -32BR Well Point - Falling Head 41.2 46.2 - 4.1E-05 BR MW -32BR Packer Test 68.0 73 - 4.1E-04 BR MW -32BR Packer Test 71.0 76 - 3.9E-04 BR MW -32BR Packer Test 77.0 82 - 1.3E-05 BR MW -32S Well Point - Falling Head 10.0 15 - 2.7E-06 M1 MW -32S Well Point - Falling Head 28.0 32.6 - 6.6E-05 M2 MW -32S Flush Bottom 28.0 - 5.1E-04 - M2 MW -34BRU Well Point - Falling Head 35.8 40.7 - 4.3E-05 BR MW -38D Well Point - Falling Head 64.0 69 - 2.6E-05 BR MW -40S Flush Bottom 7.3 - 8.2E-05 - M1 MW -40S Well Point - Falling Head 7.3 12.3 - 2.2E-04 M1 MW -40S Well Point - Falling Head 14.0 19 - 1.8E-04 M2 MW -40S Flush Bottom 14.0 - 1.7E-05 - M2 MW -42D Well Point - Falling Head 39.7 44.7 - 1.4E-05 BR U5-2D Well Point - Constant Head 65.5 71.5 - 1.7E-03 TZ U5-2S Flush Bottom 45.0 - 1.1E-04 - A U5-2S Well Point - Constant Head 45.0 50 - 3.2E-04 A U5-7SL Flush Bottom 30.0 - 2.1E-04 - A Notes: 1. Refer to Section 11.2.1 for discussion of field procedures 2. Refer to Appendix H for calculation worksheets 3. For the pressure test, the thickness of saturated material above a relatively impermeable bed is assumed to be 600 feet for a fractured bedrock system. Water flow at this depth or greater in such systems is well documented in the Piedmont region (Daniel et al., 1989) Source: HDR, Comprehensive Site Assessment Report Cliffside Steam Station Ash Basin August 18, 2015 Page 1 of 1 Table 6-19. Historic Field Permeability Borehole Type of Test Depth 1 of Test (ft bgs) Depth 2 of Test (ft bgs) Horizontal Hydraulic Conductivity 'k' (cm/sec) Hydrostratigraphic Layer CLMW-01 Pump Test 47.5 57.5 6.1E-04 M2 CLMW-02 Pump Test 43.0 53.0 4.2E-04 M2 CLMW-03S Pump Test 49.0 59.0 1.8E-04 M1 CLMW-04 Pump Test 5.0 15.0 1.1E-03 M1/M2 CLMW-05S Pump Test 50.0 60.0 2.5E-05 F CLMW-06 Pump Test 20.0 30.0 3.5E-05 M1/M2 Notes 1. Historic field data in which test interval bridges hydrostratigraphic layers were not used in the statistical analysis for either layer. 2. Refer to Appendix H for historic permeability data. 3. Historic boring logs (Appendix H) were used in the hydrostratigraphic characterization of screen intervals. Reference: 1. Field Evaluation of the Comanagement of Utility Low-Volume Wastes with High Volume Coal Combustion By-Products: CL Site. Developed by GEI Consultants and Battelle Pacific Northwest Laboratories on behalf of the Electric Power Research Institute, dated October 1997. Project No. TR-108242 Source: HDR, Comprehensive Site Assessment Report Cliffside Steam Station Ash Basin, August 18, 2015 Page 1 of 1 Table 6-20. Laboratory Permeability Test Results Borehole Type of Test Depth 1 of Test (ft bgs) Depth 2 of Test (ft bgs) Vertical Hy- draulic Con- ductivity 'k' (cm/sec) Hydrostrati- graphic Layer AB-1S Laboratory Conductivity 14.0 16.0 5.2E-05 F AB-1S Laboratory Conductivity 103.0 105.0 1.0E-07 F AB-1S Laboratory Conductivity 107.0 109.0 7.4E-07 F AB-2S Laboratory Conductivity 20.0 22.0 8.6E-05 F AB-3D Laboratory Conductivity 8.0 10.0 1.2E-04 A AB-3S Laboratory Conductivity 40.0 42.0 3.3E-05 A AB-5S Laboratory Conductivity 19.0 21.0 1.3E-04 A AB-5S Laboratory Conductivity 38.0 39.5 3.0E-06 A/M1 AB-6S Laboratory Conductivity 15.0 17.0 5.8E-05 A AS-1S Laboratory Conductivity 38.0 40.0 6.9E-05 A AS-1SB Laboratory Conductivity 98.0 100.0 1.7E-05 M1 AS-5S Laboratory Conductivity 39.0 41.0 1.3E-04 M2 AS-7S Laboratory Conductivity 19.0 21.0 7.2E-05 A BG-1BR Laboratory Conductivity 13.0 15.0 1.6E-04 M1 GWA-11S Laboratory Conductivity 8.5 10.0 6.2E-04 S GWA-14S Laboratory Conductivity 5.5 7.5 1.3E-04 M1 GWA-14S Laboratory Conductivity 20.0 22.0 5.3E-05 M1 GWA-20S Laboratory Conductivity 17.0 19.0 5.5E-06 M2 GWA-25S Laboratory Conductivity 13.0 15.0 2.6E-04 M2 GWA-27S Laboratory Conductivity 4.0 6.0 5.3E-05 M1 GWA-30S Laboratory Conductivity 23.5 24.3 7.8E-05 M1 GWA-33S Laboratory Conductivity 7.0 8.0 6.7E-07 M1 GWA-5BRU Laboratory Conductivity 19.0 19.9 5.2E-05 M1 GWA-6S Laboratory Conductivity 5.0 7.0 1.7E-04 M1 GWA-6S Laboratory Conductivity 30.0 31.3 2.1E-04 M1 IB-2S/SL Laboratory Conductivity 40.0 42.0 4.1E-05 S IB-3SB Laboratory Conductivity 37.0 39.0 2.3E-05 F IB-3SB Laboratory Conductivity 49.0 51.0 1.5E-07 S MW -32BR Laboratory Conductivity 13.0 15.0 4.9E-05 M1 U5-2D Laboratory Conductivity 55.0 57.0 1.4E-05 A U5-3D Laboratory Conductivity 25.0 27.0 6.0E-05 F U5-6S Laboratory Conductivity 13.0 15.0 5.5E-06 F U5-7SL Laboratory Conductivity 20.0 22.0 3.8E-04 A Notes: 1. Vertical hydraulic conductivity values from laboratory testing in accordance with ASTM Standard D 5084. 2. Laboratory conductivity results in which test interval bridges hydrostratigraphic layers were not used in the statistical analysis. Source: HDR, Comprehensive Site Assessment Report Cliffside Steam Station Ash Basin, August 18, 2015 Page 1 of 1 Table 6-21. Historic Laboratory Permeability Test Results Borehole Category of Test Depth 1 of Test (ft bgs) Depth 2 of Test (ft bgs) Vertical Hydraulic Conductivity 'k' (cm/sec) Hydrostratigraphic Layer D-1 Lab Conductivity 11.0 13.0 1.5E-05 F P-103 Lab Conductivity 20.0 22.0 1.0E-04 M1 P-110 Lab Conductivity 2.0 10.0 7.9E-08 M1 P-111D Lab Conductivity 9.0 11.0 3.9E-04 M1 P-113 Lab Conductivity 9.0 16.0 9.5E-06 M1 P-114 Lab Conductivity 2.0 4.0 3.9E-05 M1 P-117D Lab Conductivity 10.0 12.0 4.8E-04 M1 U-1 Lab Conductivity 22.0 23.0 3.0E-06 F U-3 Lab Conductivity 5.0 7.0 1.2E-05 F Notes: 1. See Appendix H for referenced laboratory conductivity reports. References: 1. Cliffside CCP Landfill Construction Plan Application. Developed by CDM on behalf of Duke Energy, Revision dated June 24, 2009. 2. Phase 2 Reconstitution of Ash Pond Designs Report, Appendix F. Developed by AMEC, dated December 31, 2014. TABLE 7-1 PROVISIONAL BACKGROUND THRESHOLD VALUES FOR SOIL CLIFFSIDE STEAM STATION DUKE ENERGY CAROLINAS, LLC, MOORESVILLE, NC P:\Duke Energy Carolinas\21. CLIFFSIDE\CSA Update\Tables\Table 7-1 BG Threshold Values for Soil Page 1 of 1 Parameter Reporting Unit PSRG Protection of Groundwater PBTV pH*S.U.NE 4.7 - 6.7 Aluminum mg/kg NE 36,464 Antimony mg/kg 0.9 0.9 Arsenic mg/kg 5.8 4.88 Barium mg/kg 580 233 Beryllium mg/kg 63 38.9 Boron mg/kg 45 1.82 Cadmium mg/kg 3 3 Calcium mg/kg NE 304 Chloride mg/kg NE NE Chromium mg/kg 3.8 109 Cobalt mg/kg 0.9 43 Copper mg/kg 700 34.7 Iron mg/kg 150 75,162 Lead mg/kg 270 38.1 Magnesium mg/kg NE 35,562 Manganese mg/kg 65 1421 Mercury mg/kg 1 0.016 Molybdenum mg/kg NE 0.97 Nickel mg/kg 130 66.2 Nitrate (as N)mg/kg NE NE Potassium mg/kg NE 18,460 Selenium mg/kg 2.1 8.3 Sodium mg/kg NE 14.1 Strontium mg/kg NE 85 Sulfate mg/kg NE NE Thallium mg/kg 0.28 0.28 Vanadium mg/kg 6 142 Zinc mg/kg 1200 214 Notes: * - Upper and lower threshold values calculated for parameter PBTV - Provisional Background Threshold Values mg/kg - milligrams per kilogram NE - Not Established PSRG Protection of Groundwater - NCDEQ IHSB Preliminary Soil Remediation Goals Table - October 2016 S.U. - Standard Unit Prepared by: LWD Checked by: TME and DMY TABLE 7-2 POTENTIAL SECONDARY SOURCE SOIL ANALYTICAL RESULTS CLIFFSIDE STEAM STATION DUKE ENERGY CAROLINAS, LLC, MOORESBORO, NC P:\Duke Energy Carolinas\21. CLIFFSIDE\CSA Update\Tables\Table 7-2 Potential Secondary Source Soil Analytical Results Page 1 of 3 S.U.mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg NE 5.8 45 3.8 3.8 0.9 150 65 NE NE 0.28 6 4.7-6.7 4.88 1.82 NE 109 43 75162 1421 85 NE 0.28 142 Sample ID Saturated/ Unsaturated pH Arsenic Boron Chromium (VI)Chromium Cobalt Iron Manganese Strontium Sulfate Thallium Vanadium AB-01D (8.5 - 10)Unsaturated 6.3 j <6 <14.9 NA 4 6.7 9150 504 1.8 j <312 <6 6.2 AB-01D (28.5 - 30)Unsaturated 5.5 j <6.6 <16.4 NA 2.8 3.8 j 6620 210 <3.3 <340 <6.6 3.5 j AB-02D (8.5 - 10)Unsaturated 6.6 j <7.9 <19.7 NA 19.9 14.7 31500 461 2.3 j <397 <7.9 39 AB-02D (28.5 - 30)Saturated 5.7 j <8 <19.9 NA 13.6 <8 32500 106 <4 <406 <8 39.8 AB-04BR (43.5 - 45)Saturated 5.6 j <3.3 41.3 NA 13.2 3.7 40400 84.3 6.5 <319 <3.3 22.5 AB-05BRU (38.5 - 40)Saturated 5.7 j 3.3 j 47.1 NA 55.2 36.2 41800 501 3.6 j <355 <3.7 68.7 AB-05BRU (43.5 - 45)Saturated 5.6 j 3.6 47.3 NA 46.6 33.6 43000 364 7.6 <336 <3.3 55.5 AB-06D (48.5 - 50)Saturated 6 j 4.8 <38.6 NA 11.6 600 52400 18600 13.7 <371 11.8 37 AS-01D (3.5 - 5)Unsaturated 5.3 j <7.1 9 j NA 11.4 8.6 12800 357 <3.5 <347 <7.1 15.8 AS-01D (28.5 - 30)Unsaturated 6.1 j <7 16.6 j NA 41.1 10.4 22800 300 3 j <356 <7 32.4 AS-01D (58.5 - 60)Unsaturated 7.2 j <6.9 <17.2 NA 1 j <6.9 3120 22.4 8.2 <338 <6.9 <6.9 AS-01D (68.5 - 70)Unsaturated 5.5 j <7 <17.4 NA 1.6 j <7 4310 30 4.3 <350 <7 <7 AS-02D (25)Saturated 6.1 j <6.5 <16.2 NA 13.3 3.7 j 21000 213 5 <325 <6.5 24.7 AS-02D (31)Saturated 6.1 j <7.1 <18 NA 11.1 7.5 16400 477 2.4 j 185 j <7.1 18 AS-04D (63.5 - 65)Unsaturated 5.6 j <6.6 <16.6 NA 2.7 <6.6 6690 148 2.1 j <323 <6.6 <6.6 AS-05BRU (33.5 - 35)Unsaturated 6.5 j <6.1 <15.3 NA <1.5 <6.1 3280 95.7 <3.1 <295 <6.1 <6.1 AS-05BRU (38.5 - 40)Saturated 5.8 j 4.1 j <17.9 NA 14.8 11.2 24000 750 <3.6 <352 <7.2 26.9 AS-06D (48.5 - 50)Unsaturated 5.3 j 5.7 j 12.4 j NA 10.5 22.1 14700 944 <3.1 <323 <6.3 20.9 AS-07BR (56.5 - 58.5)Saturated 4.9 j <6.1 <15.3 NA 9 <6.1 5590 45.2 6.1 <301 <6.1 9.9 AS-07D (3.5 - 5)Unsaturated 5.1 j <7.7 14.5 j NA 19.7 6.5 j 20900 168 <3.9 <374 <7.7 24.6 BG-01D (3.5 - 5)Unsaturated 5.4 j <3 <3 NA 36.4 7.5 35900 75.2 4.4 <314 <1.2 59.7 BG-01D (8.5 - 10)Unsaturated 5.7 j 1.4 <13.3 NA 21.9 8.1 17400 64.7 7.6 <267 0.7 j 31 BG-01D (18.5 - 20)Unsaturated 5.4 j 2.1 <3.2 NA 6 6.3 13500 76 0.93 <334 <1.3 15 BG-01D (23.5 - 25)Saturated 5.6 j 3.8 <29.4 NA 10.4 12 25000 125 <5.9 <291 0.62 j 24.4 BG-01D (28.5 - 30)Saturated 5.9 j 1.8 <3.1 NA 9.4 14.3 30900 162 3.9 <305 0.78 j 36.7 BG-01D (58.5 - 60)Saturated 7.1 1.8 j <14.2 NA 23.9 11.4 30100 208 4.8 <287 <2.8 36.6 BG-01D (66.7)Saturated 5.1 j <5.1 <12.7 NA 5.6 4.1 j+13300 63.7 2.6 <243 <5.1 6.9 j+ BG-01S (21 - 22.5)Saturated 5.4 j 1.9 j <13.7 NA 21.7 11.3 32000 136 3.4 <272 <2.7 33 BG-02D (3.5 - 5)Unsaturated 5.5 j <3.5 <69.4 NA 84 15.2 61500 234 1.1 <353 <1.4 110 BG-02D (8.5 - 10)Unsaturated 5.2 j 3.3 j 18.4 j-NA 85.5 22 39100 591 j <3.2 <310 <3.2 75.7 BG-02D (18.5 - 20)Unsaturated 5.5 j 3.4 j 21.7 NA 109 19.3 22000 415 <0.83 <400 <4.2 60.1 BG-02D (28.5 - 30)Unsaturated 5.7 j 3.5 <16.9 NA 71.2 25.6 16600 517 0.9 <330 <1.4 52.9 BG-02D (51)Saturated 5.4 j <5 <12.6 NA 127 25.2 28100 511 21 <259 <5 66.7 BGSB-BG-01 (6-7)Unsaturated 5.0 1.2 <5.1 NA 44 23 40000 B 260 1.5 13 0.64 84 BGSB-BG-01 (13-14)Unsaturated 4.8 0.49 <5.2 NA 14 6 16000 B 130 1 j <11 0.4 42 BGSB-BG-01 (19-20)Unsaturated 4.6 3 <25 NA 6.4 5.2 38000 B 48 <9.9 <12 0.33 40 BGSB-BG-02 (2-3)Unsaturated 5.1 6.8 <11 NA 89 4.1 47000 B 100 1.2 47 0.29 110 BGSB-BG-02 (6-7)Unsaturated 5.2 1.3 <12 NA 110 13 49000 B 200 <4.7 <13 0.19 120 BGSB-GWA-25 (6-7)Unsaturated 4.9 1.5 <13 NA 60 15 52000 B,M 93 3.7 j <12 0.65 120 BGSB-GWA-25 (14-15)Unsaturated 5.2 2.8 <5.1 NA 15 23 15000 B 850 1.7 j <12 M 0.3 44 BGSB-MW-30 (6-7)Unsaturated 5.2 4.3 B <9.6 M NA 120 6.2 73000 M 160 16 <13 0.39 180 B BGSB-MW-30 (14-15)Unsaturated 5.2 2.7 B <5.9 NA 91 30 49000 190 0.89 j <13 0.32 130 B BGSB-MW-30 (24-25)Unsaturated 5.6 0.73 B <15 NA 94 12 38000 390 <6.2 <13 M 0.41 83 B BGSB-MW-32 (2-3)Unsaturated 4.8 12 <14 NA 69 2.4 44000 B 40 6.9 35 0.31 89 BGSB-MW-32 (14-15)Unsaturated 4.4 6.4 <4.8 NA 41 2.6 40000 B 130 0.6 j <12 0.15 71 GWA-01BRU (11.5)Saturated 7.3 j <4.9 <12.2 NA 38.1 3.8 j 12600 112 <2.4 <257 <4.9 31.8 GWA-02BR (15)Saturated 5.5 j <7.5 17.1 j NA 71.6 11.4 j+27500 317 2.8 j <368 <7.5 50.7 GWA-02BR (21)Saturated 6.6 j <7 15.9 j NA 62.5 17.5 26900 670 4.9 <331 <7 38.9 GWA-02BR (29)Saturated 6.8 j <5.8 <14.5 NA 22.5 j-6.2 j-9420 152 2.1 j <275 <5.8 11 j GWA-03D (48.5 - 50)Unsaturated 6.5 j 3.9 j-<17.9 NA 144 17.9 42800 463 4.5 <355 <7.2 105 GWA-03D (57)Saturated 5.3 j 3.1 j <13.1 NA 34.5 6.5 26600 150 <2.6 <249 <5.2 36.5 GWA-04D (4.5)Saturated 5.8 j <7 22.8 NA 95.2 14.6 42100 337 <3.5 <359 <7 94.3 GWA-04D (13.5 - 15)Saturated 4.1 j <7.5 20.9 NA 88.1 13.9 35000 339 11.3 228 j <7.5 81.4 GWA-04D (27.2)Saturated 7.9 j <4.8 <12 NA 49.4 7.3 16200 214 6.2 <237 <4.8 39.9 GWA-05BRU (13.5 - 15)Unsaturated 5.7 j 2.6 j <19.7 NA 129 25.2 26700 498 2.7 <386 0.84 j 85.8 GWA-05BRU (18.5 - 20)Saturated 5.4 j 1.8 <31.8 NA 114 17.7 48800 329 7.4 <319 0.84 j 94.9 GWA-05BRU (31)Saturated 5.8 j <5 <12.5 NA 21.2 <5 4980 74.2 <2.5 <238 <5 7.1 GWA-06D (28.5 - 30)Unsaturated 6 j <9.7 <24.2 NA 130 20.7 32800 601 10.1 <466 <9.7 78.8 GWA-06D (38.5 - 40)Saturated 6.6 j <7.2 <18 NA 111 18.8 32400 586 18.2 <359 <7.2 79.1 GWA-10D (13.5 - 15)Unsaturated 7.6 j 10.3 11.1 j NA 16.4 j+5.4 j+11100 208 4.2 228 j <6.8 20.2 GWA-10D (23.5 - 25)Saturated 7.3 j <6.5 <16.2 NA 4 <6.5 3590 33 <3.2 <314 <6.5 5.6 j GWA-11BRU (8.5 - 15)Saturated 4.9 j <5.7 7.5 j NA 10 4.4 j 9460 188 3.4 <290 <5.7 19.5 GWA-11BRU (18.5 - 20)Saturated 6.7 j 49.5 9.6 j NA 5.5 <6.6 10400 90.9 4.5 178 j <6.6 10.4 j- GWA-11BRU (29.9)Saturated 6.4 j 4.3 j <12.8 NA 65.2 9.3 25200 353 6.9 <259 <5.1 64.7 GWA-12BRU (20 - 23.5)Unsaturated 6.5 j <2.7 6.8 j NA 7.4 3 7640 152 <2.7 <266 <2.7 5 GWA-12BRU (28.5 - 30)Saturated 6.1 j <2.7 18.9 NA 24.2 7.3 19400 377 <2.7 <274 <2.7 42.4 GWA-13BR (13 - 14.5)Unsaturated 5.9 j 2.2 24.8 j NA 150 22.9 34700 624 <7.7 <377 0.85 j 73.7 GWA-13BR (21.5)Saturated 9.4 j <5.1 <12.8 NA 52.6 6.1 21600 241 5.7 <250 <5.1 49.3 GWA-14D (23.5 - 25)Saturated 4 j 4.2 <36.9 NA 144 28.8 42100 901 2.3 241 j <3.7 99.4 GWA-14D (28.5 - 30)Saturated 4.1 j 8.2 <34.5 NA 88.4 14.9 19300 491 <0.69 <326 <3.5 64.9 GWA-14D (47)Saturated 6.7 j <5.4 <13.5 NA 119 11.4 26400 375 9.7 NA <5.4 49.2 GWA-20D (3 - 5)Unsaturated 7.8 j <5 <12.6 NA 7 2.9 j 5150 225 2.1 j <264 <5 10.2 GWA-20D (8.5 - 10)Saturated 6.3 j <5.6 17.9 NA 12.7 3 j 20000 126 <2.8 <295 <5.6 19.3 GWA-20D (29)Saturated 6.2 j <5.3 <13.2 NA 8 <5.3 43800 75.7 1.6 j <253 <5.3 11.1 GWA-21BRU (5)Unsaturated 7.8 j 2.9 j <14 NA 14.6 7.1 19200 242 5.4 224 j-<5.6 22.7 GWA-21BRU (10)Unsaturated 5.5 j 3.6 j <14.8 NA 19.3 31.3 23600 243 3.9 239 j-<5.9 26.7 GWA-21BRU (18.2)Saturated 4.2 j <5.1 <12.7 NA 7.6 3.8 j 16700 29 <2.5 156 j-<5.1 9.4 GWA-22BRU (15 - 15.3)Saturated 9 j <5.4 <13.4 NA 8 <5.4 6310 42.3 <2.7 <268 <5.4 11.9 GWA-22S (3 - 5)Unsaturated 9.2 j <8.1 <20.2 NA 30.1 6.6 j 27900 256 3.9 j <407 <8.1 50.4 GWA-22S (8.5 - 10)Saturated 5 j <6.3 28.3 NA 27.7 5.3 j 30000 133 3.6 <311 <6.3 49.9 GWA-23D (15.8)Unsaturated 4.2 j <5.1 <12.7 NA 10.6 21.2 36800 170 <2.5 <256 <5.1 22.4 Reporting Units PSRG Protection of Groundwater Provisional Background Threshold Values TABLE 7-2 POTENTIAL SECONDARY SOURCE SOIL ANALYTICAL RESULTS CLIFFSIDE STEAM STATION DUKE ENERGY CAROLINAS, LLC, MOORESBORO, NC P:\Duke Energy Carolinas\21. CLIFFSIDE\CSA Update\Tables\Table 7-2 Potential Secondary Source Soil Analytical Results Page 2 of 3 S.U.mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg NE 5.8 45 3.8 3.8 0.9 150 65 NE NE 0.28 6 4.7-6.7 4.88 1.82 NE 109 43 75162 1421 85 NE 0.28 142 Sample ID Saturated/ Unsaturated pH Arsenic Boron Chromium (VI)Chromium Cobalt Iron Manganese Strontium Sulfate Thallium Vanadium Reporting Units PSRG Protection of Groundwater Provisional Background Threshold Values GWA-24D (17 - 18)Saturated 6.1 j <5.4 <13.4 NA 16.5 11 23500 127 <2.7 <257 <5.4 22.5 GWA-24D (22 - 23)Saturated 5.9 j <5.3 <13.4 NA 18.3 16.3 24100 195 2.8 <255 <5.3 26.3 GWA-24D (27 - 29)Saturated 5.9 j <5.8 <14.6 NA 4 3.4 j 18900 54 1.8 j <296 <5.8 5.2 j GWA-25D (8.5 - 10)Unsaturated 5.1 j <5.6 <14 NA 28.3 11.8 23500 254 <2.8 <268 <5.6 51.4 GWA-25D (18.5 - 20)Saturated 6 j <5.7 <14.3 NA 33.3 14.6 29600 191 4 <281 <5.7 58.8 GWA-25D (37.1 - 37.4)Saturated 5.8 j <5.9 27.6 NA 22.7 5.1 j 31800 170 4.6 <296 <5.9 42.2 GWA-26D (13.5 - 15)Unsaturated 5.9 j <6.3 <15.7 NA 11.3 5.9 j 16200 189 <3.1 <322 <6.3 17.8 GWA-26D (18.5 - 20)Saturated 5.7 j <6.6 <16.5 NA 13 7 18100 514 <3.3 <319 <6.6 24.7 GWA-26D (72.1 - 72.3)Saturated 6.8 j <5.9 20.4 NA 9.7 8.1 j-23800 90.2 17 <296 <5.9 37.3 GWA-27D (13.5 - 15)Unsaturated 5.5 j 0.95 j 16.1 NA 12.4 73.3 17600 1240 0.39 j <292 0.74 j 23.8 GWA-27D (24.9)Unsaturated 5.6 j 4.8 j <12.7 NA 17.6 73.8 24900 1190 <2.5 <252 <5.1 30.3 GWA-27D (51.5)Saturated 6.7 j <5.3 <13.2 NA 0.8 j <5.3 3750 65.2 6.1 <246 <5.3 3.3 j GWA-28BRU (28.5 - 30)Saturated 6.2 j <5.5 <13.6 NA <1.4 <5.5 2070 6.1 1.8 j NA <5.5 <5.5 GWA-28BRU (38.5 - 40)Saturated 4.2 j 3.1 j <13.8 NA 5.4 3.1 j 7280 39.5 2.6 j 277 j-<5.5 7.6 GWA-29D (16.2)Unsaturated 6.6 j <5 <12.4 NA 10.6 9.2 20000 174 <2.5 <258 <5 17.3 GWA-29D (27.4)Saturated 3.4 j <5.1 <12.8 NA 4.1 11.4 10800 39.4 <2.6 292 j-<5.1 3.7 j GWA-30BRU (18.5 - 20)Unsaturated 6 j <8.3 20.1 j NA 112 13.3 31400 362 <4.1 <432 <8.3 73.9 GWA-30BRU (23.5 - 25)Saturated 5.9 j <7.9 16.8 j NA 46.5 9.1 26800 270 4.4 <402 <7.9 51.2 GWA-31BR (4)Unsaturated 7.1 j 7.7 31.3 NA 98.8 17.5 35200 401 5.5 <317 <6.6 79.9 GWA-31D (7)Unsaturated 10.7 j <5 20.9 NA 69.2 5.8 22900 266 2 j 135 j <5 61.5 GWA-31D (8.7)Unsaturated 11.5 j 4.5 j 41.6 NA 43 7.1 15500 403 115 162 j <5.3 37.1 GWA-32D (11.7)Unsaturated 5.8 j <5.3 <13.2 NA <1.3 <5.3 1720 13.2 <2.6 <264 <5.3 <5.3 GWA-32D (29.9)Saturated 6 j <4.9 <12.3 NA <1.2 <4.9 2440 47.8 1.7 j <246 <4.9 <4.9 GWA-33BR (4 - 5)Saturated 5.7 j <6.8 <17 NA 58.1 9.1 22300 458 4 191 j <6.8 44.5 GWA-33BR (9 - 10)Saturated 5.5 j <6.6 <16.6 NA 36.5 3.6 j 9110 123 4.9 <330 <6.6 25 GWA-33D (19)Saturated 6.2 j <5 <12.5 NA 91.5 9 23900 336 3 <252 <5 53.1 GWA-33D (28.1)Saturated 6.9 j <6 <15 NA 90.6 13.9 33800 470 5.1 <288 <6 77.3 IB-01D (8.5 - 10)Unsaturated 3.8 j 5 j <22 NA 128 9.6 55900 218 12.5 1320 <8.8 123 IB-01D (18.5 - 20)Unsaturated 5.7 j <8.3 <20.6 NA 83.3 13.3 33100 377 5.6 493 <8.3 73.4 IB-02BRU (43.5 - 45)Saturated 5 j 5 23 NA 33.3 8.7 17500 309 24.5 <303 <3 46.2 IB-02BRU (48.5 - 50)Saturated 5.7 j 2 j 30.5 NA 96 15.4 26800 605 20.9 <363 <3.7 59.7 IB-03D (8.5 - 10)Saturated 3.4 j 4.2 j 20.3 NA 100 13.3 26700 373 10.5 2060 <6.4 61.5 IB-03D (18.5 - 20)Saturated 4 j <7.4 21.1 NA 88.4 14.3 28400 360 4.7 507 <7.4 72.8 IB-04D (27 - 28.5)Saturated 5.5 j 7.5 30.2 NA 80.1 12.4 25100 402 2.5 j <394 <3.9 68 IB-04D (32 - 33.5)Saturated 5.9 j 2.6 j 40.2 NA 28.4 9.7 35900 125 <3.4 <329 <3.4 36.1 IB-04S/SL (2 - 3)Unsaturated 6.6 j 7 27.6 NA 51.6 9.8 22500 244 11 <359 <3.6 47.1 MW-21BR (4 - 5)Saturated 5.2 j 2.9 j 14.7 NA 15.1 8.5 20400 107 1.8 <347 <3.5 38.8 MW-21BR (8.5 - 10)Saturated 5.7 j 2.2 j <31.3 NA 32 46.2 30400 551 1 <333 <3.1 46.8 MW-21BR (55.8)Saturated 6.2 j <5.2 <12.9 NA 9 9.8 21500 70.8 10.5 <241 <5.2 64 MW-21BR (68.8)Saturated 5.4 j 3.3 j <13.2 NA 91.8 14.9 33000 389 26.3 j-<262 <5.3 59.8 MW-22BR (35)Saturated 6.1 j <5.1 <12.9 NA 16.9 22.8 24800 367 <2.6 <259 <5.1 22.5 MW-22BR (40)Saturated 6.8 j <5.2 <12.9 NA 21.9 16.7 23900 256 1.7 j <254 <5.2 19.1 MW-22BR (52 - 52.4)Saturated 5.5 j <5.1 <12.7 NA 7.9 7.4 26500 587 2.2 j <250 <5.1 10.4 MW-30D (3.5 - 5.5)Unsaturated 5.9 j 3.2 j <3.9 NA 79.9 7.3 48500 145 1.1 <394 <1.6 97.8 MW-30D (8.5 - 10)Unsaturated 6 j 2.4 j <4.1 NA 48.1 3.3 j 27300 89 1.6 <396 <4.1 70.3 MW-30D (18.5 - 20)Unsaturated 5 j 3.5 j <4.7 NA 80.6 2.4 j 60600 215 <0.94 <488 <1.9 125 MW-30D (28.5 - 30)Unsaturated 6.1 j 3.6 j 27.3 j NA 88.6 36.1 38700 979 <7.7 <380 1 j 93.8 MW-30D (36 - 37.5)Unsaturated 5.6 j <3 <30.2 NA 77.6 62.6 43800 796 0.65 <302 <3 72.3 MW-30D (84.6)Saturated 7.8 j 3 j <12.7 NA 118 19 28800 477 10.2 <251 <5.1 51.9 MW-30S (43.5 - 44.5)Saturated 6.2 4.6 <40.6 NA 122 51.2 78000 1170 3.3 <408 <4.1 136 MW-32BR (41.4)Saturated 5.8 j <5.2 <13.1 NA <1.3 <5.2 6030 3.6 <2.6 <253 <5.2 <5.2 MW-32BR (54)Saturated 5.3 j <5 <12.4 NA 11 <5 3380 40.1 <2.5 <235 <5 5.8 MW-32D (3.5 - 5)Unsaturated 5.2 j 3.8 <30.1 NA 79.8 5.7 48700 148 1.4 204 j <1.2 96.7 MW-32D (8.5 - 10)Unsaturated 6 j 1.9 j <30.6 NA 50.5 6.7 44800 107 2 <309 <1.2 74.5 MW-32D (18.5 - 20)Unsaturated 5.9 j 1.7 <3.3 NA 3.7 3.2 2760 62 13.3 <321 <1.3 3 MW-32D (18.5 - 20)Unsaturated NA NA NA NA NA NA NA NA NA NA NA NA MW-32S (22.5 - 24)Unsaturated 6.3 j 7.9 <38.9 NA 116 33.8 46400 910 1.4 j+<387 <3.9 90.1 MW-34BRU (41.5)Saturated 6 j 12.3 j <12.8 NA 39 j+3.4 j+9130 j 98.4 17.1 j-<248 <5.1 11.9 MW-36BRU (8.5)Saturated 5.3 j <6.8 13.5 j NA 19.3 6.1 j 17300 281 6.3 <346 <6.8 37.7 MW-36BRU (13.5)Saturated 5.9 j <6.9 10.4 j NA 15.3 5.4 j 13600 j 288 5.3 <342 <6.9 30.8 MW-36BRU (75.4)Saturated 6.1 j <5.3 <13.2 NA 8.4 3.1 j 3270 50.4 104 <258 <5.3 3 j MW-38D (33.5 - 35)Unsaturated 6 j 3 <3 NA 16.3 43.7 15100 317 4.1 <298 <1.2 31.7 MW-38D (53.5 - 55)Saturated 7.4 j <3.7 <3.7 NA 24.2 8 15200 209 6.2 <363 <3.7 37.2 MW-38D (69.8)Saturated 6.2 j <5.5 <13.6 NA 54.8 8.9 15000 189 17.9 <262 <5.5 35.7 MW-38S (53.5 - 55)Saturated 6.9 j NA NA NA NA NA NA NA NA NA NA NA MW-40BRU (3.5 - 5)Unsaturated 7.1 j <6.1 <15.2 NA 89.2 22.2 31100 411 3.9 <295 <6.1 71.6 MW-40BRU (8.5 - 10)Saturated 6.5 j <6.9 <17.2 NA 95.7 20.6 34000 464 2.4 j <340 <6.9 78.7 MW-40BRU (34.7)Saturated 9.3 j <5.1 <12.7 NA 94.1 10.1 32800 449 4.1 <254 <5.1 60.7 MW-42D (28.5 - 30)Unsaturated 6.6 j 1.8 <4 NA 85.4 13.1 21600 321 7.1 <423 0.89 j 50.9 MW-42D (38.5 - 40)Saturated 6 j 5 j-<3.2 NA 88.3 12.4 j-25800 492 5.2 <317 0.74 j 41.8 MW-42D (45)Saturated 8.1 j 3.7 j <12.2 NA 102 13 27200 355 2.2 j <255 <4.9 55.6 S-101 (0-6)NA 6.04 16 1.9 j 1.5 48 7.4 23000 140 21 100 0.5 61 S-102 (0-6)NA 4.91 67 5.8 <1 9.2 3 9700 77 82 1500 0.18 33 S-103 (0-6)NA 6.42 26 13 <0.84 18 11 15000 97 140 650 0.56 70 S-104 (0-6)NA 6.16 6.4 B 3.5 j <0.81 44 9.8 17000 150 28 240 0.58 50 S-105 (0-6)NA 6.78 20 B 2.5 1.1 30 6.1 16000 120 20 20 0.45 37 S-106 (0-6)NA 6.03 34 B 12 1.6 8.4 6.6 10000 54 250 550 0.46 41 S-107 (0-6)NA 7.23 40 B 1.8 j 0.95 52 8.3 18000 160 65 160 0.53 66 S-108 (0-6)NA 4.84 48 B 5.5 B <0.76 25 7.4 15000 130 82 230 0.66 45 S-109 (0-6)NA 7.43 14 1.1 j 0.78 14 3.9 9800 190 26 <11 0.16 29 S-201 (0-6)NA 6.54 130 B <3.7 <0.72 78 5.1 28000 130 35 270 0.51 64 TABLE 7-2 POTENTIAL SECONDARY SOURCE SOIL ANALYTICAL RESULTS CLIFFSIDE STEAM STATION DUKE ENERGY CAROLINAS, LLC, MOORESBORO, NC P:\Duke Energy Carolinas\21. CLIFFSIDE\CSA Update\Tables\Table 7-2 Potential Secondary Source Soil Analytical Results Page 3 of 3 S.U.mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg NE 5.8 45 3.8 3.8 0.9 150 65 NE NE 0.28 6 4.7-6.7 4.88 1.82 NE 109 43 75162 1421 85 NE 0.28 142 Sample ID Saturated/ Unsaturated pH Arsenic Boron Chromium (VI)Chromium Cobalt Iron Manganese Strontium Sulfate Thallium Vanadium Reporting Units PSRG Protection of Groundwater Provisional Background Threshold Values S-201 (2-2.5)NA 5.12 18 B <3.4 2 100 5.3 29000 280 16 260 0.49 66 S-201 (7-7.5)NA 5.98 0.98 B <11 <0.84 43 6.9 21000 210 6.4 99 0.46 38 S-201 (12-12.5)NA 5.68 0.42 j,B 1.4 j,B 2.3 34 4.7 11000 97 2.9 120 0.6 34 S-201 (17-17.5)NA 4.36 1.2 B <4.2 <0.85 120 4.3 36000 290 6 240 M 0.63 51 S-202 (0-6)NA 6.53 27 4.1 j <0.71 78 10 28000 260 65 210 0.74 66 S-202 (2-2.5)NA 5.89 0.88 B <12 <0.8 110 20 25000 350 31 37 0.89 120 S-203 (0-6)NA 5.85 0.67 B 3.3 j <0.8 27 16 20000 440 6.7 220 0.4 63 S-203 (2-2.5)NA 5.38 0.9 B <10 <0.82 42 18 32000 350 5.6 290 0.36 58 S-203 (7-7.5)NA 5.1 0.87 B <11 1.3 57 12 54000 600 1.2 j 82 0.25 56 S-203 (12-12.5)NA 4.86 0.78 B <15 <0.82 120 11 30000 820 1.5 j 87 0.51 100 S-203 (16)NA 6.48 0.58 <5.7 NA 68 4.9 23000 490 1.9 j 43 0.23 63 S-204 (0-6)NA 5.84 1.8 <6 <0.68 130 16 24000 200 33 130 0.56 58 S-204 (2-2.5)NA 5.55 1.1 <5.9 <0.74 100 15 32000 350 9.5 93 1.1 93 S-204 (7-7.5)NA 5.32 1.4 <13 <0.8 150 22 31000 500 28 42 0.92 85 S-204 (12-12.5)NA 5.09 9.5 B <11 <0.87 84 22 18000 240 23 44 0.61 78 S-205 (0-6)NA 6.56 14 <14 <0.7 83 20 29000 360 65 180 0.9 72 S-205 (2-2.5)NA 6.23 0.52 <4.4 <0.67 52 9.5 19000 400 28 8.2 j 1.1 64 S-206 (0-6)NA 5.12 1.2 <2.6 <0.67 27 4.8 38000 43 2.5 <11 0.62 57 S-207 (0-6)NA 6.1 4.2 M 1.8 j,M <0.66 38 M 8.3 26000 M 75 M 14 78 0.51 67 S-207 (2-2.5)NA 5.71 4.2 2.2 j <0.76 59 5 44000 100 22 <13 0.67 100 S-207 (7-7.5)NA 5.18 1.5 <2.1 <0.87 72 76 94000 140 9.6 <11 0.94 71 S-208 (0-6)NA 6.44 8.9 8.3 0.86 43 8.9 21000 120 74 <12 0.57 62 S-208 (2-2.5)NA 6.22 0.69 j 4.8 j <0.83 46 6.8 9900 140 10 <16 0.53 48 S-208 (7-7.5)NA 5.31 0.54 j <15 1.6 61 7.4 16000 130 8.8 <13 0.47 50 S-208 (12-12.5)NA 5.53 0.43 j <2.5 2.4 19 4.2 16000 110 6.2 41 0.51 21 S-208 (17-17.5)NA 4.56 0.72 <2.3 <0.77 47 5 16000 120 3.9 100 0.94 52 U5-01D (3.5 - 5)Unsaturated 6 j <10.9 <27.3 NA 85.7 <10.9 48600 94.8 6.7 <528 <10.9 105 U5-01D (43.5 - 45)Saturated 5.7 j 4.1 j 11.7 j NA 39.3 <5.9 20400 119 4.6 <296 <5.9 43.8 U5-01D (48 - 50)Saturated 5.6 j <6 8.6 j NA 28.1 <6 13400 85.1 2 j <299 <6 34.1 U5-02D (3.5 - 5.5)Unsaturated 7.5 j 6.1 26.4 NA 64.1 8.7 26900 208 37.8 624 <5.7 61.1 U5-02D (33.5 - 35)Unsaturated 7.2 j 4.3 j 34 NA 99.5 13.1 38600 275 6.9 269 j <5.9 90.9 U5-03D (8.5 - 10)Unsaturated 6.8 j <6.5 <16.2 NA 21.2 <6.5 8000 118 1.8 j <328 <6.5 14.3 U5-03D (28.5 - 30)Unsaturated 7.4 j 5.2 j <19.5 NA 96.9 25.4 34700 478 4.7 <368 <7.8 80.4 U5-03D (40 - 45)Saturated 6.8 j 5 j <15.2 NA 72.2 22.3 36100 282 3.6 <301 <6.1 78.2 U5-04D (13.5 - 15)Unsaturated 5.1 j 3.4 j+<14.5 NA 102 19.3 36500 391 4.3 174 j <5.9 80.8 U5-04D (28.5 - 30)Unsaturated 5 j 4.4 j <19.3 NA 65 22.7 25600 426 <3.9 <387 <7.7 59.2 U5-05D (14.5 - 15)Unsaturated 5.6 j <6.9 <17.4 NA 28.8 3.6 j 13100 176 <3.5 <336 <6.9 18.6 U5-05D (28.5 - 30)Saturated 6.7 j <7.6 <19.1 NA 91.3 19.3 34900 370 3.7 j <373 <7.6 80.5 U5-06D (14.5 - 15)Unsaturated 5.2 j <7.8 <19.5 NA 34.1 7.6 j 30400 228 2.2 j <390 <7.8 52.5 U5-06D (28.5 - 30)Unsaturated 6.6 j 3.6 j <17.1 NA 23.5 <6.9 32900 196 1.8 j 199 j <6.9 47.9 U5-07D (3.5 - 5)Unsaturated 4 j 59.2 19.6 NA 9.7 4.6 18200 53.3 24.1 630 <2.9 11.6 Prepared by: DMY Checked by: MCM Notes: - Bold highlighted concentration indicates exceedance of the Inactive Hazardous Sites Branch PSRG Table October 2016 for Protection of Groundwater S-100 series and S-200 series soil samples are from Units 1-4 in Ash Basin Closure Activities. < - concentration not detected at or above the adjusted reporting limit. j - Estimated concentration above the adjusted method detection limit and below the adjusted reporting limit. j- - Estimated concentration, biased low. j+ - Estimated concentration, biased high. M - Matrix spike / matrix spike dup failure. mg/kg - Milligrams per kilogram NA - Not analyzed NE - Not established S.U. - Standard Unit B - Target analyte detected in method blank at or above the reporting limit. Target analyte concentration in sample is less than 10X the concentration in the method blank. Analyte concentration in sample could be due to blank contamination. - Bold highlighted concentration indicates exceedance of the provisional background threshold values (PBTVs). Provisional Background Threshold Values (July 2017, draft currently under review) TABLE 10-1 PROVISIONAL BACKGROUND THRESHOLD VALUES FOR GROUNDWATER CLIFFSIDE STEAM STATION DUKE ENERGY CAROLINAS, LLC, MOORESBORO, NC P:\Duke Energy Carolinas\21. CLIFFSIDE\CSA Update\Tables\ Table 10-1 GW Provisional BG Threshold Values Page 1 of 1 Shallow Deep Bedrock pH*S.U.6.5-8.5 4.4 - 6.1 4.8 - 6.1 5.4 - 7.4 Alkalinity mg/L NE 13.67 19.74 53 Aluminum µg/L NE 253 290 208.2 Antimony µg/L 1∆1 1 1 Arsenic µg/L 10 1 1.303 1 Barium µg/L 700 73.08 23 19.33 Beryllium µg/L 4∆0.188 0.2 1 Bicarbonate mg/L NE 14.42 18.13 68.82 Boron µg/L 700 50 50 50 Cadmium µg/L 2 1 1 1 Calcium mg/L NE 3.221 11 16 Carbonate mg/L NE 5 5 5 Chloride mg/L 250 7.7 5.1 8.656 Chromium (VI) 1 µg/L 10 0.452 0.16 0.12 Chromium µg/L 10 3.968 1.791 3.567 Cobalt µg/L 1∆10.65 5.1 1.497 Copper µg/L 1000 6.569 9.453 5 Iron µg/L 300 684 515 6220 Lead µg/L 15 1 1 1 Magnesium mg/L NE 2.479 1.6 2.328 Manganese µg/L 50 168.8 78.31 89.4 Mercury µg/L 1 0.2 0.2 0.2 Methane µg/L NE 10 3.151 10 Molybdenum µg/L NE 1 1 1.716 Nickel µg/L 100 6.256 12.56 5 Nitrate + Nitrite mg-N/L NE 8.837 2.8 0.92 Potassium mg/L NE 5 5 5 Selenium µg/L 20 1 1 1 Sodium mg/L NE 6.139 4.41 7.42 Strontium µg/L NE 36.73 56.14 107.1 Sulfate mg/L 250 1.169 10 15.1 Sulfide mg/L NE 0.1 0.1 0.1 TDS mg/L 500 75.47 70.98 120 Thallium µg/L 0.2∆0.117 0.063 0.2 TOC mg/L NE 1 1 1 Vanadium µg/L 0.3∆0.8 1.095 0.37 Zinc µg/L 1000 15 15.03 10 Radium (Total)pCi/L NE 2.58†1.51†3.1† Uranium (Total)µg/mL NE 0.0005 0.0005 0.0005 Notes: * - Upper and lower tolerance limits calculated for parameter ∆ - Interim Maximum Allowable Concentrations (IMACs) of 15A NCAC .02L Standard, Appendix 1, April 1, 2013 µg/L - micrograms per liter µg/mL - micrograms per milliliter † - Provisional; dataset contains less than 10 valid samples 1 - Hexavalent chromium does not have a NC 2L/IMAC standard; therefore, the NC 2L standard for total chromium is relied upon as a surrogate. mg - N/L - Milligrams nitrogen per liter mg/L - milligrams per liter NE - Not Established pCi/L - picocuries per liter Radium (Total) - Radium-226 and Radium-228 combined S.U. - Standard Unit TDS - Total Dissolved Solids TOC - Total Organic Carbon Uranium (Total) - Uranium-233, Uranium-234, Uranium-236, and Uranium-238 combined Provisional Background Threshold Values NCAC 02L StandardReporting UnitParameter Prepared by: LWD Checked by: JHG TABLE 10-2 STATE AND FEDERAL STANDARDS FOR CONSTITUENTS OF INTEREST CLIFFSIDES STEAM STATION DUKE ENERGY CAROLINAS, LLC, MOOREBORO, NC P:\Duke Energy Carolinas\21. CLIFFSIDE\CSA Update\Tables\ Table 10-2 State and Federal Standards for COIs Page 1 of 1 Constituent NCAC 2L Groundwater Standard (µg/L) EPA Primary MCL (µg/L) EPA Secondary MCL (µg/L)IMAC (µg/L) pH 6.5 - 8.5*-6.5 - 8.5*- Arsenic 10 10 -- Boron 700 --- Chromium 10 100 -- Hexavalent Chromium ---- Cobalt ---1 Iron 300 -300 - Manganese 50 -50 - Strontium ---- Sulfate 250,000 -250,000 - Thallium -2 -0.2 TDS 500,000 -500,000 - Vanadium ---0.3 Uranium -30 -- Radium (pCi/L)-5 -- Prepared by: DMY Checked by: MCM Notes: - - Not applicable *Standard Units µg/L - micrograms per Liter pCi/L - picocurie per Liter ^ - Federal MCL TABLE 11-1 DATA INVENTORY SUMMARY CLIFFSIDE STEAM STATION DUKE ENERGY CAROLINAS, LLC, MOORESBORO, NC P:\Duke Energy Carolinas\21. CLIFFSIDE\CSA Update\Tables\Table 11-1 Data Inventory Summary TableTable 11-1 Data Inventory Summary Table Page 1 of 1 UNIT 5 TRANSECT ACTIVE ASH BASIN- WEST TRANSECT ASH STORAGE TRANSECT ACTIVE ASH BASIN- EAST TRANSECT UNIT 5 TRANSECT ACTIVE ASH BASIN- WEST TRANSECT ASH STORAGE TRANSECT ACTIVE ASH BASIN- EAST TRANSECT (a)Have background concentrations been formally established for all COIs in soil and groundwater? (b)For each source area, how many wells within each flow systems are located along the contaminant plume centerline? Along a transect that is perpendicular to the plume centerline? 3 Ash Pore 2 Shallow 3 Deep 1 Upper Bedrock 2 Bedrock 3 Shallow 4 Deep 3 Bedrock 3 Ash Pore 4 Shallow 4 Deep 1 Upper Bedrock 3 Bedrock 2 Shallow 1 Deep 1 Upper Bedrock 2 Bedrock 2 Shallow 5 Deep 3 Bedrock 2 Ash Pore 3 Shallow 4 Deep 1 Bedrock Upper 6 Shallow 2 Deep 1 Bedrock Upper 3 Bedrock 3 Shallow 3 Deep 2 Bedrock Upper 4 Bedrock Arsenic in Shallow 2 Shallow Boron in Deep 4 Deep Manganese in Deep 4 Deep Arsenic in Shallow 2 Shallow Arsenic in Shallow 2 Shallow Boron in Deep 4 Deep Boron in Deep 2 Deep Arsenic in Shallow 3 Shallow No wells are screened across the full thickness of an aquifer. No wells are screened across the full thickness of an aquifer. No wells are screened across the full thickness of an aquifer. No wells are screened across the full thickness of an aquifer. No wells are screened across the full thickness of an aquifer. No wells are screened across the full thickness of an aquifer. No wells are screened across the full thickness of an aquifer. No wells are screened across the full thickness of an aquifer. U5-7S* (5; 6/17/2015 - 6/22/2016)5 GWA-27D (5; 6/23/2015 - 5/17/2017)AB-3I (8; 9/11/2015 - 8/9/2017)AB-1S (8; 6/30/2015 - 8/16/2017)CCR-U5-2D (5; 8/11/2016 - 7/11/2017)AB-3I (8; 9/11/2015 - 8/9/2017)CLMW-1 (11; 2/9/2009 - 8/17/2017)CCR-3BR (7; 6/14/2016 - 8/3/2017) U5-7SL* (5; 6/17/2015 - 6/22/2016)GWA-27DA (9; 6/23/2015 - 8/14/2017)AB-3S* (8; 6/29/2015 - 8/9/2017)AB-1D (9; 6/20/2015-8/16/2017)U5-4S (6; 4/13/2016 - 8/15/2017)AB-3S* (8; 6/29/2015 - 8/9/2017)CLMW-3S (13; 8/25/2008 - 8/11/2017)GWA-28S (2; 4/18/2016 - 5/16/2017) U5-7D (4; 6/27/2015 - 9/15/2015)GWA-27BR (4; 12/22/2016 - 8/14/2017)5 AB-3SL* (1; 6/17/2016)AB-1BRO (0; NA)U5-4D (6; 7/7/2015 - 8/15/2017)5 AB-3SL* (1; 6/17/2016)CLMW-3D (12; 2/9/2009 - 8/11/2017)GWA-28BRU (7; 6/19/2015 - 8/9/2017) CCR-U5-4S (6; 6/16/2016 - 7/10/2017)CCR-12S (5; 6/17/2016 - 7/7/2017)AB-3SLA* (0; NA)GWA-21S (9; 7/7/2015 - 8/9/2017)5 U5-4BR (0; NA)AB-3SLA* (0; NA)CLMW-2 (13; 8/25/2008 - 8/14/2017)GWA-28BR (7; 9/11/2015 - 8/9/2017) CCR-U5-4D (5; 8/10/2016 - 7/10/2017)CCR-12D (1; 10/5/2016)5 AB-3BRU (0; NA)GWA-21BRU (9; 6/23/2015 - 8/9/2017)U5-4BRA (0; NA)5 AB-3BRU (0; NA)MW-25DR (18; 8/14/2012 - 8/17/2017)MW-4D (7; 8/25/2008 - 9/14/2015) GWA-2S (10; 6/16/2015 - 8/15/2017)AB-2S (9; 6/20/2015 - 8/16/2017)AB-3BRUA (0; NA)GWA-21BR (8; 7/7/2015 - 8/9/2017)CCR-U5-3S (6; 6/16/2016 - 7/10/2017)AB-3BRUA (0; NA)AS-5S (7; 9/10/2015 - 8/14/2017)MW-20D (11; 4/1/2013 - 8/16/2017) GWA-2BRU (9; 6/16/2015 - 8/15/2017)AB-2D (7; 6/20/2015 - 8/16/2017)AB-3BR (0; NA)CCR-U5-3D (5; 8/10/2016 - 7/10/2017)AB-3BR (0; NA)AS-5BRU (8; 6/22/2015 - 8/14/2017)MW-20DR (22; 4/28/2011 - 8/16/2017) GWA-2BR (0; NA)AB-2BRO (0; NA)CCR-7S (5; 8/10/2016 - 7/6/2017)U5-5BR (0; NA)CCR-11S (5; 8/11/2016-7/7/2017)AS-5BR (3; 12/20/2016 - 5/18/2017)GWA-22S (7; 4/19/2016 - 8/16/2017) U5-2S-SLA* (0; NA)GWA-20S (9; 6/23/2015 - 8/14/2017)CCR-7D (6; 6/14/2016 - 7/6/2017)U5-5D (7; 6/27/2015 - 8/16/2017)CCR-11D (5; 8/11/2016-7/7/2017)CCR-6S (6; 8/11/2016 - 7/6/2017)GWA-22BRU (4; 12/21/2016 - 8/16/2017) U5-2D (8; 6/16/2015 - 8/10/2017)GWA-20D (10; 6/23/2015 - 8/14/2017)AS-1SB (10; 6/13/2015 - 8/11/2017)CCR-U5-5D (6; 6/16/2016 - 7/10/2017)MW-8S (7; 6/23/2015 - 8/17/2017)CCR-6D (6; 6/14/2016 - 7/6/2017)MW-11S (6; 6/29/2015 - 8/16/2017) U5-2BR (6; 3/3/2016 - 8/10/2017)GWA-20BR (2; 2/13/2017 - 8/14/2017)AS-1D (8; 7/8/2015 - 8/11/2017)GWA-3D (7; 6/24/2015 - 8/17/2017)MW-8D (11; 2/9/2009-8/17/2017)GWA-29D (5; 4/15/2016 - 8/11/2017)5 MW-11D (2; 8/4/2009 - 2/24/2010) AS-7S (5; 6/19/2015 - 8/11/2017)CCR-9D (5; 8/11/2016-7/10/2017)5 GWA-29BR (0; NA)MW-11DA (0; NA) AS-7D (9; 6/19/2015 - 8/11/2017)CCR-8D (6; 6/14/2016-7/10/2017)GWA-29BRA (1; 8/11/2017)MW-11BRO (0; NA) 5 AS-7BR (0; NA) AS-7BRA (0; NA) AS-2S (8; 7/7/2015 - 8/14/2017) AS-2D (8; 9/11/2015 - 8/14/2017) AS-2BR (2; 5/18/2017 - 8/14/2017) Total Record Date Range: 6/16/2015 - 8/15/2017 Total Record Date Range: 6/20/2015 - 8/16/2017 Total Record Date Range: 6/13/2015 - 8/14/2017 Total Record Date Range: 6/20/2015 - 8/16/2017 Total Record Date Range: 6/24/2015 - 8/17/2017 Total Record Date Range: 2/9/2009 - 8/17/2017 Total Record Date Range: 8/25/2008 - 8/17/2017 Total Record Date Range: 8/25/2008 - 8/16/2017 (e)Does turbidity, well construction (for example, grout contamination, etc.), or well "break in" issues preclude the use of data in (b), (c) , and (or) (d)? 3 18 samples omitted. 18 samples omitted.51 samples omitted. 11 samples omitted.30 samples omitted. 41 samples omitted.40 samples omitted. 40 samples omitted. 14 samples total 2 Deep 8 samples total 2 Deep 17 samples total 2 Deep 5 samples total 0 Deep 6 samples total 0 in Deep 5 samples total 0 in Deep 5 samples total 1 in Deep 5 samples total 1 in Deep (g)Given that iron hydroxide (HFO) content is a good indicator of retention capacity for most metal contaminants, how many locations in (f) was HFO measured? 1 sample collected 1 in Deep 3 samples collected 1 in deep 1 sample collected 0 in deep 1 sample collected 1 in deep 2 samples collected 1 in Deep No samples collected 1 sample collected 0 in deep No samples collected Notes:Prepared by: KDF Checked by: EMB/ALA Response to these questions reflect the data collected as of September 2017. 1 - Responses to (c) reflect the most contaminated flow unit within a specific flow transect. The boron plume is the primary contaminant under consideration in this evaluation, however where appropriate, discrete plumes of other CCR constituents are considered. 2 - Valid samples are those without pH or turbidity issues (defined below). 3 - pH issues are defined as pH>9 for all flow zones. Turbidity issues are defined as turbidity >10 NTUs. 4 - “Spatial locations sampled for solid phase chemistry” this question is interpreted as the number of solid phase samples analyzed for total metals. 5 - Indicate that these wells were replaced with an adjacent well typically ending in an "A" (e.g., GWA-27D was replaced with GWA-27DA). * - An asterisk at the end of a well ID indicates that the well is an ash pore well. References: NCDEQ. (2017, October). Monitored Natural Attenuation For Inorganic Contaminants in Groundwater: Guidance for Developing Corrective Action Plans Pursuant to NCAC 15A.0106(l). NC: Division of Water Resources. Yes, Provisional Background Threshold Values (PBTVs) have been formally established for soil and groundwater. Source area: # Samples; Flow Layer = # Samples in Layer Unit 5: 85 solid phase samples; Ash = 6, Fill = 17, Shallow = 29, Deep = 17, Bedrock = 16 Active Ash Basin: 58 solid phase samples; Ash = 18, Fill = 3, Shallow = 14, Deep = 12, Bedrock = 11 Ash Storage Area: 17 solid phase samples; Ash = 2, Fill = 3, Shallow = 8, Deep = 4, Bedrock = 0 Inactive Units 1-4: 38 solid phase samples, Ash = 5, Fill = 6, Shallow = 15, Deep = 7, Bedrock= 5 Yes, spatial locations include maximum and minimum groundwater concentrations. For each source area and within each flow unit, how many spatial locations were sampled for solid phase chemistry and were these locations associated with "end member" (maximum and minimum) groundwater concentrations for each contaminant? How many of these spatial locations are associated with (b) or (c) above? 4 PARALLEL TO TRANSECT/CENTERLINE OF FLOW PERPENDICULAR TO TRANSECT/CENTERLINE OF FLOW How many wells in (b) above are screened across the most contaminated vertical interval of a given flow unit or are screened across the full thickness of the flow unit? 1 Date Inventory Questions taken from MMA Guidance Document- Section 4.3 (c) (d) (f) What is the length of record and how many valid sample events are available for wells listed in (b) and (c)? 2 TABLE 13-1 SUMMARY OF Kd VALUES FROM BATCH AND COLUMN STUDIES CLIFFSIDE STEAM STATION DUKE ENERGY CAROLINAS, LLC, MOORESBORO, NC P:\Duke Energy Carolinas\21. CLIFFSIDE\CSA Update\Tables\Table 13-1 Summary of Kd Values from Batch Page 1 of 1 Arsenic Barium Boron Cadmium Chromium Molybdenum Nickel Selenium Thallium Vanadium Trial - 1 6460.0 IDNA 1.0 1745.0 71.0 18270.0 IDNA 9290.0 131.0 5447.0 Trial - 2 7900.0 IDNA 1.0 4718.0 85.0 IDNA IDNA 15825.0 150.0 8992.0 Trial - 1 2360.0 IDNA 0.2 13696.0 45.0 12032.0 IDNA 6799.0 98.0 32382.0 Trial - 2 2324.0 IDNA 0.2 11501.0 45.0 13949.0 IDNA 7674.0 100.0 38671.0 Trial - 1 73.0 IDNA IDNA 597.0 82.0 1.0 IDNA 3.0 83.0 7.0 Trial - 2 92.0 IDNA IDNA 831.0 93.0 1.0 IDNA 5.0 87.0 8.0 Trial - 1 793.0 IDNA 1.0 15723.0 266.0 41.0 IDNA 212.0 380.0 1158.0 Trial - 2 833.0 IDNA 1.0 11121.0 243.0 55.0 IDNA 229.0 139.0 1247.0 Trial - 1 376.0 IDNA IDNA 320.0 81.0 4.0 IDNA 29.0 159.0 299.0 Trial - 2 490.0 IDNA IDNA 207.0 111.0 3.0 IDNA 35.0 223.0 334.0 Trial - 1 IDNA IDNA IDNA IDNA IDNA IDNA IDNA IDNA IDNA IDNA Trial - 2 IDNA IDNA IDNA IDNA IDNA IDNA IDNA IDNA IDNA IDNA Trial - 1 IDNA IDNA IDNA IDNA IDNA IDNA IDNA IDNA IDNA IDNA Trial - 2 IDNA IDNA IDNA IDNA IDNA IDNA IDNA IDNA IDNA IDNA Trial - 1 113.0 IDNA IDNA 531.0 1441.0 0.0 IDNA 8.0 1296.0 82.0 Trial - 2 101.0 IDNA IDNA 334.0 1590.0 0.0 IDNA 5.0 1551.0 77.0 Trial - 1 156.0 IDNA 1.0 IDNA 1.0 3174.0 IDNA 13.0 10.0 27.0 Trial - 2 147.0 IDNA 1.0 IDNA 1.0 2941.0 IDNA 13.0 11.0 28.0 Trial - 1 69.0 IDNA IDNA 23.0 181.0 0.5 IDNA 7.0 895.0 33.0 Trial - 2 69.0 IDNA IDNA 24.0 205.0 1.0 IDNA 7.0 1024.0 35.0 Trial - 1 839.0 IDNA 1.0 2997.0 22.0 38.0 IDNA 216.0 110.0 1159.0 Trial - 2 1880.0 IDNA 2.0 9033.0 31.0 273.0 IDNA 696.0 139.0 2632.0 Trial - 1 4121.0 IDNA 1.0 407.0 3328.0 15.0 IDNA 367.0 546.0 3904.0 Trial - 2 4366.0 IDNA 1.0 IDNA 4371.0 15.0 IDNA 384.0 585.0 IDNA Trial - 1 1328.0 IDNA 2.0 269.0 179.0 40.0 IDNA 44.0 155.0 1790.0 Trial - 2 1064.0 IDNA 1.0 IDNA 167.0 45.0 IDNA 47.0 155.0 1983.0 Trial - 1 284.0 IDNA IDNA 239.0 2407.0 93.0 IDNA 166.0 347.0 71.0 Trial - 2 291.0 IDNA IDNA 567.0 2429.0 92.0 IDNA 168.0 337.0 78.0 Trial - 1 406.0 IDNA IDNA 688.0 4664.0 2.0 IDNA 36.0 149.0 402.0 Trial - 2 429.0 IDNA IDNA 821.0 4684.0 2.0 IDNA 38.0 144.0 390.0 Trial - 1 1056.0 IDNA 0.3 269.0 576.0 86.0 IDNA 224.0 3151.0 1352.0 Trial - 2 1550.0 IDNA 0.3 IDNA 574.0 42.0 IDNA 201.0 3368.0 2571.0 582.6 IDNA 0.8 873.5 205.5 0.2 IDNA 101.2 231.7 446.4 641.5 IDNA 1.0 597.0 180.0 40.0 IDNA 106.5 155.0 402.0 149.3 IDNA 0.5 269.0 73.5 2.0 IDNA 13.0 115.3 71.0 1 Trial Only 3750.0 900.0 IDNA 900.0 IDNA 1500.0 1900.0 3250.0 1300.0 22000.0 1 Trial Only 1800.0 750.0 IDNA 500.0 IDNA 450.0 900.0 1100.0 1500.0 7000.0 1 Trial Only 1500.0 575.0 IDNA 1000.0 IDNA 100.0 650.0 250.0 1400.0 1075.0 1 Trial Only 8500.0 3750.0 IDNA 4500.0 IDNA 250.0 5500.0 1000.0 7500.0 3800.0 1 Trial Only 4250.0 800.0 IDNA 1300.0 IDNA 450.0 IDNA 1000.0 1850.0 6700.0 1 Trial Only 425.0 650.0 IDNA 700.0 IDNA 225.0 600.0 250.0 900.0 600.0 1 Trial Only 1400.0 2750.0 IDNA 2000.0 IDNA 175.0 2000.0 450.0 5500.0 2000.0 1 Trial Only 1400.0 5500.0 IDNA 7000.0 IDNA IDNA 6000.0 400.0 13000.0 2000.0 1 Trial Only 9000.0 3250.0 150.0 2500.0 IDNA 9000.0 4300.0 15000.0 11500.0 16000.0 1 Trial Only 560.0 90.0 3400.0 3500.0 IDNA 125.0 3750.0 350.0 15000.0 850.0 1 Trial Only 12000.0 125.0 400.0 650.0 IDNA 1000.0 800.0 13000.0 19000.0 20000.0 1 Trial Only 1750.0 1800.0 IDNA 4500.0 IDNA 90.0 4700.0 700.0 4750.0 2400.0 1 Trial Only 14000.0 4000.0 IDNA 5100.0 IDNA 1500.0 5000.0 5500.0 7500.0 25000.0 1 Trial Only 2500.0 3750.0 IDNA 8500.0 IDNA 500.0 17000.0 1800.0 12500.0 3500.0 1 Trial Only 8000.0 1000.0 IDNA 3750.0 IDNA 450.0 3000.0 1750.0 1250.0 6500.0 Trial A 12000.0 2750.0 IDNA 4000.0 IDNA 1400.0 4500.0 10000.0 11000.0 19000.0 Trial B 12000.0 2250.0 IDNA 3000.0 IDNA 1100.0 6500.0 5300.0 8500.0 16000.0 Trial C 7500.0 2750.0 IDNA 3250.0 IDNA 1150.0 5500.0 5500.0 7000.0 9500.0 3588.8 1339.3 588.7 2332.8 IDNA 526.1 2971.0 1665.3 4925.4 5298.9 4000.0 2025.0 400.0 3125.0 IDNA 450.0 4300.0 1425.0 7250.0 6600.0 1475.0 725.0 150.0 975.0 IDNA 200.0 1400.0 437.5 1475.0 2000.0 Notes: Prepared By: DMY Checked By: EMB IDNA = isotherm data not available Units reported in milliliters per gram (mL/g) Zero values were replaced with 1x10-30 to allow for geometric mean calculations. Column Kd values are from the Soil Sorption Evaluation Report (Langley, W.G. & Oza, S., 31 Oct. 2015). Column Study Lower Quartile (exclusive) Batch sorption Kd values were taken from the linear isotherm (So = 0) values from the Addendum to Soil Sorption Evaluation (Langley, W.G. & Dongwook, K., 2 Feb. 2016). GWA-20S (17-19) Geometric Mean Median US-3D (40-45) MW-22BR (41-43) AB-1D (109) AB-2D (59-63) AS-3BR (54.5-55.5) GWA-5S (19-28) GWA-1BRU (21-22) GWA-13BR (28-29) GWA-30BR (27.4) GWA-2D (28-29) GWA-24S (20-25) IB-3SB (49-51) GWA-3D (52-53) GWA-10D (46.2-46.8) GWA-23D (20.4-21.4) Sample Site and Depth (feet) AB-1D (109) Batch Study Geometric Mean AB-2D (59-63) GWA-23D (20.4-21.4) GWA-20S (17-19) GWA-24S (20-25) Lower Quartile (exclusive) AS-3BR (54.5-55.5) GWA-5S (19-28) GWA-1BRU (21-22) GWA-13BR (28-29) GWA-30BR (27.4) IB-3SB (49-51) MW-22BR (41-43) US-3D (40-45) GWA-2D (28-29) GWA-3D (52-53) GWA-10D (46.2-46.8) Median TABLE 15-1 GROUNDWATER INTERIM MONITORING PROGRAM SAMPLING PARAMETERS AND ANALYTICAL METHODS CLIFFSIDE STEAM STATION DUKE ENERGY CAROLINAS, LLC, MOORESBORO, NC P:\Duke Energy Carolinas\21. CLIFFSIDE\CSA Update\Tables\Table 15-1 Groundwater IMP 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 6010D Antimony 0.001 mg/L EPA 200.8 or 6020B Arsenic 0.001 mg/L EPA 200.8 or 6020B Barium 0.005 mg/L EPA 200.7 or 6010D Beryllium 0.001 mg/L EPA 200.8 or 6020B Boron 0.05 mg/L EPA 200.7 or 6010D Cadmium 0.001 mg/L EPA 200.8 or 6020B Chromium 0.001 mg/L EPA 200.8 or 6020B Cobalt 0.001 mg/L EPA 200.8 or 6020B Copper 0.001 mg/L EPA 200.8 or 6020B Hexavalent Chromium 0.000025 mg/L EPA 218.7 Iron 0.01 mg/L EPA 200.7 or 6010D Lead 0.001 mg/L EPA 200.8 or 6020B Manganese 0.005 mg/L EPA 200.7 or 6010D Mercury 0.00005 mg/L EPA 245.1 or 7470A Molybdenum 0.001 mg/L EPA 200.8 or 6020B Nickel 0.001 mg/L EPA 200.8 or 6020B Selenium 0.001 mg/L EPA 200.8 or 6020B Strontium 0.005 mg/L EPA 200.7 or 6010D Thallium (low level)0.0002 mg/L EPA 200.8 or 6020B Vanadium (low level)0.0003 mg/L EPA 200.8 or 6020B Zinc 0.005 mg/L EPA 200.7 or 6010D Radium 226 1 pCi/L EPA 903.1 Modified Radium 228 1 pCi/L EPA 904.0/SW846 9320 Modified Uranium (233, 234, 236, 238)Varies by isotope µg/mL SW846 3010A/6020B Total Uranium NA µg/mL Calculated Alkalinity (as CaCO3)5 mg/L SM 2320B Bicarbonate 5 mg/L SM 2320B Calcium 0.01 mg/L EPA 200.7 Carbonate 5 mg/L SM 2320B Chloride 0.1 mg/L EPA 300.0 or 9056A Magnesium 0.005 mg/L EPA 200.7 or 6010D Potassium 0.1 mg/L EPA 200.7 Sodium 0.05 mg/L EPA 200.7 Sulfate 0.1 mg/L EPA 300.0 or 9056A Sulfide 0.1 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 5 mg/L SM 2450D Prepared by: HHS Checked by: MCM Notes: µg/mL - micrograms per milliliter µS/cm - micrograms per centimeter mg/L - Milligrams per liter mV - Millivolts NA indicates not applicable. NTU - Nephelometric turbidity unit ºC - Degrees Celsius pCi/L - picocuries per liter S.U. - Standard Unit FIELD PARAMETERS INORGANICS RADIONUCLIDES ANIONS/CATIONS/OTHER TABLE 15-2 INTERIM MONITORING PROGRAM SAMPLE LOCATIONS CLIFFSIDE STEAM STATION DUKE ENERGY CAROLINAS, LLC, MOORESBORO, NC P:\Duke Energy Carolinas\21. CLIFFSIDE\CSA Update\Tables\Table 15-2 Interim GW Monitoring Plan Page 1 of 6 Well ID Well to be Sampled Sample for Radionuclides AB-1BRO boron only AB-1D X AB-1S X AB-2BRO boron only AB-2D X AB-2S X AB-3BRUA X AB-3I X AB-3S X X AB-3SL X AB-3SLA X X AB-4BR X AB-4D X AB-4S X X AB-4SL X X AB-5BR X AB-5BRU X AB-5S X X AB-6BR X AB-6D X AB-6S X X AS-1D X AS-1SB X AS-2BR X AS-2D X X AS-2S X X AS-3BRU X AS-4D X AS-4S X AS-5BR X AS-5BRU X AS-5S X AS-6BRA X AS-6D X AS-6S X AS-7BRA X AS-7D X AS-7S X X AS-8D X AS-8S X TABLE 15-2 INTERIM MONITORING PROGRAM SAMPLE LOCATIONS CLIFFSIDE STEAM STATION DUKE ENERGY CAROLINAS, LLC, MOORESBORO, NC P:\Duke Energy Carolinas\21. CLIFFSIDE\CSA Update\Tables\Table 15-2 Interim GW Monitoring Plan Page 2 of 6 Well ID Well to be Sampled Sample for Radionuclides BG-1BRA X BG-1D X X BG-1S X X BG-2D Water level only CCPMW-1D X X CCPMW-1S X X CCPMW-2D Water level only CCPMW-2S Water level only CCPMW-3D Water level only CCPMW-32 Water level only CCPMW-4 Water level only CCPMW-5 Water level only CCPMW-6D Water level only CCPMW-6S Water level only CCPTW-1D Water level only CCPTW-1 Water level only CCPTW-2 Water level only CLMW-1 X X CLMW-2 X CLMW-3D X X CLMW-3S X X CLMW-5D X CLMW-5S X CLMW-6 X CLP-1 Water level only CLP-2 Water level only CLP-3 Water level only CLP-4 Water level only GWA-1BRU X GWA-2BR X X GWA-2S X X GWA-3D X X GWA-4BR Water level only GWA-4D X X GWA-4S X X GWA-5S X GWA-6D Water level only GWA-6S X GWA-10D X GWA-10S X TABLE 15-2 INTERIM MONITORING PROGRAM SAMPLE LOCATIONS CLIFFSIDE STEAM STATION DUKE ENERGY CAROLINAS, LLC, MOORESBORO, NC P:\Duke Energy Carolinas\21. CLIFFSIDE\CSA Update\Tables\Table 15-2 Interim GW Monitoring Plan Page 3 of 6 Well ID Well to be Sampled Sample for Radionuclides GWA-11BRU X X GWA-11S X X GWA-12BRU X GWA-12S X GWA-13BR X GWA-14BR X GWA-14D X GWA-14S X GWA-20BR X X GWA-20D X X GWA-20S X X GWA-21BR X X GWA-21BRU X X GWA-21S X X GWA-22BRU X GWA-22S X X GWA-23D X GWA-24BR X GWA-24D X GWA-24S X GWA-25D Water level only GWA-25S X GWA-26D Water level only GWA-26S X GWA-27BR X X GWA-27D-A X X GWA-28BR X GWA-28BRU X GWA-28S X GWA-29BRA X GWA-29D X X GWA-2BRU X X GWA-30BR X GWA-30BRU Water level only GWA-30S X GWA-31BR-A X GWA-31D X GWA-32BR Water level only GWA-32D X GWA-33BR X TABLE 15-2 INTERIM MONITORING PROGRAM SAMPLE LOCATIONS CLIFFSIDE STEAM STATION DUKE ENERGY CAROLINAS, LLC, MOORESBORO, NC P:\Duke Energy Carolinas\21. CLIFFSIDE\CSA Update\Tables\Table 15-2 Interim GW Monitoring Plan Page 4 of 6 Well ID Well to be Sampled Sample for Radionuclides GWA-33D X GWA-33S X GWA-34S X GWA-35D X GWA-35S X GWA-36D X X GWA-36S X X GWA-37D X GWA-37S X GWA-38D X GWA-38S X GWA-39S Water level only GWA-40S Water level only GWA-42S Water level only GWA-43D X GWA-43S X GWA-44BR X GWA-44D X GWA-44S X GWA-45D Water level only GWA-45S X GWA-46D X GWA-47D X GWA-48BR X GWA-51D X GWA-54D X GWA-54BRO X GWA-54S X GWA-56D X GWA-56S X GWA-5BRU X MW-10D X MW-10S X MW-11BRO sample boron only (re- develop) MW-11DA X MW-11S X X MW-20D X MW-20DR X MW-21BR X TABLE 15-2 INTERIM MONITORING PROGRAM SAMPLE LOCATIONS CLIFFSIDE STEAM STATION DUKE ENERGY CAROLINAS, LLC, MOORESBORO, NC P:\Duke Energy Carolinas\21. CLIFFSIDE\CSA Update\Tables\Table 15-2 Interim GW Monitoring Plan Page 5 of 6 Well ID Well to be Sampled Sample for Radionuclides MW-21D X MW-22BR X MW-22DR X MW-23D X MW-23DR X MW-23S X MW-24D X X MW-24DR X X MW-25DR X MW-2D-A X MW-30D X MW-30DA X X MW-30S X X MW-32BR X X MW-32D X X MW-32S X X MW-34BRU X MW-34S X MW-36BRU X MW-36S X MW-38BR X X MW-38D X X MW-38S X X MW-40BRU X MW-40S X MW-42DA X MW-42S X MW-8D X MW-8S X X U5-1D X U5-1S X U5-2BR X U5-2D X X U5-2S-SL-A X X U5-4BRA X U5-4D X U5-4S X U5-5BR X U5-5D X X U5-6D X TABLE 15-2 INTERIM MONITORING PROGRAM SAMPLE LOCATIONS CLIFFSIDE STEAM STATION DUKE ENERGY CAROLINAS, LLC, MOORESBORO, NC P:\Duke Energy Carolinas\21. CLIFFSIDE\CSA Update\Tables\Table 15-2 Interim GW Monitoring Plan Page 6 of 6 Well ID Well to be Sampled Sample for Radionuclides U5-6S X U5-8BR X U5-8D X U5-8S X CCR-12S X CCR-12D X CCR-13D X CCR-15D X CCR-IB-1S X CCR-IB-1D X CCR-IB-3S X CCR-IB-3D X CCR-U5-4S (Q1 only)X CCR-U5-4D (Q1 only)X CCR-7S (Q1 only)X CCR-7D (Q1 only)X X Prepared by: DMY Checked by: KDF