1804_DukeMarshall_DALF_Ph1_SoilSamplingTablesT4-T5_FID1772616_20221104

Table 4: Potential Borrow Source Material Analytical Results - Inorganic Compounds
1804 Phase 1 Dry Ash Landfill (Permit No. INDUS-1804)
Duke Energy Marshall Steam Station
S&ME Project Number: 212013, Ph. 06
Reporting Units % % SU mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg
mg/kg mg/kg mg/kg
PSRG Protection of Groundwater NE NE NE 110000 0.904 5.84 580 63.216 44.8 3.008 NE NE 3.84 0.904 700 NE 150 270.06 NE 65.2 1.045 7.07 130.4 NE NE 2.08 NE NE 1500 NE 0.2848 350.07 1200

CAMA Background Threshold Values1 NE NE 4.2 - 7.5 56437 0.64 8.237 1063 3.897 15 0.72 1660 293 406 62.86 120 NE 78228 95.23 49637 3388 0.1 3.5 237 29.3 18117 2.3 NE 730 28.73 437 0.48
132 80.8
Duke Energy Piedmont Regional Background Threshold Values2 NE NE 2.3 - 9.8 25,978 - 81,619 0.177 - 0.9 1.2 - 43.13 122 - 1,063 1.2 - 4.52 14.4 - 56.3 0.03 - 1 410 - 8769 12 - 423 20
- 440 27 - 81.68 17.4 - 216 NE 24,500 - 85,345 7.5 - 95.23 760 - 51,829 370 - 3,388 0.04 - 0.113 1.83 - 12 9.2 - 237 0.25 - 31.2 427 - 35,600 1.58 - 6.857 NE 338 - 1,500 7.1 - 200 12-
437 0.166 - 2.132 42 - 230.9 60.5 - 325.5
S&ME Sample ID Duke Energy Sample ID Northing Easting Sample Depth Date Collected Moisture Solids pH Aluminum Antimony Arsenic Barium Beryllium Boron Cadmium Calcium Chloride Chromium
Cobalt Copper Hexavalent Chromium Iron Lead Magnesium Manganese Mercury Molybdenum Nickel Nitrate - N Potassium Selenium Silver Sodium Strontium Sulfate Thallium Vanadium Zinc
BD 43 (HA) 2022003724 682598.860999675 1417258.13042207 0" - 6" 44601 19.4 80.6 6.8 45000 <0.51 4.4 240 2.0 4.2 <0.13 1100 2.8 J 20 4.3 48 <1.2 46000 36 2900 210 0.033 J 0.81 J 4.2 0.99
B 2700 1.3 <0.26 37 J 72 40 0.35 54 62
BD 43 (HA) 2022003725 682598.860999675 1417258.13042207 2' - 2.5' 44601 17 83 6.2 29000 <0.55 7.6 110 1.6 2.2 J <0.14 600 <12 6.2 5.6 18 <1.2 30000 31 2800 250 0.024 J <2.1 1.3 J 0.95
B 2300 1.5 <0.27 <260 29 54 0.22 45 61
BB 44 (HA) 2022004036 682501.847257945 1417044.36013347 0" - 6" 44603 18 82 5.5 47,000 S <5.6 S 8.5 280 2.1 2.5 J 3<1.5 710 6.0 J 15 13 50 <1.2 H 41,000 S 32 S 6,000 S 420 S <0.095 0.78
JS 9.6 1.1 B 7700 3<15 <0.28 65 J 74 S 91 0.57 B 100 S 76
BB 44 (HA) 2022004037 682501.847257945 1417044.36013347 2' - 2.5' 44603 13.2 86.8 5 38000 <5.2 6.7 220 1.1 <2.7 3<1.4 120 J 4.6 J 5.2 9.7 7.1 <1.2 H 27000 31 6900 440 <0.083 2.2 2.7
2.3 BS 8900 3<14 <0.26 95 J 48 <12 0.69 B 49 78
BD 42 (HA) 2022004038 682697.506302904 1417250.71744506 0" - 6" 44603 12.3 87.7 4.9 47000 <0.49 2.2 190 1.3 <2.0 <0.13 170 J 4.3 J 40 2.7 92 2.1 H 46000 19 670 42 <0.087 5.9 11 0.93
B 810 3.3 <0.25 40 J 41 29 0.12 BJ 34 20
BD 42 (HA) 2022004039 682697.506302904 1417250.71744506 2' - 2.5' 44603 11.6 88.4 5.1 29000 <0.52 4.0 120 2.0 <2.4 <0.13 94 J 2.8 J 74 1.9 260 6.0 H 110000 22 250 20 <0.091 14 4.6 0.67
B 470 4.5 <0.26 33 J 30 12 3<1.3 70 17
AZ 46 (HA) 2022004040 682297.429697791 1416845.11298685 0" - 6" 44606 19.8 80.2 6.8 31000 <5.6 4.4 J 230 2.2 5.0 3<1.5 840 <12 11 12 15 <1.2 20000 39 2400 140 0.024 J 25 7.2 1.4 B 2100
3<15 <0.28 44 J 95 73 0.40 B 61 44
AZ 46 (HA) 2022004041 682297.429697791 1416845.11298685 2' - 2.5' 44606 23.6 76.4 6.9 61000 <0.57 2.9 J 1,000 3.3 6.2 <0.15 1600 <13 50 11 19 0.53 J 62000 17 13000 420 <0.10 1.8 J 32
1.7 B 14000 3<15 <0.29 160 J 120 500 0.65 B 120 92
BA 45 (HA) 2022004042 682389.053909945 1416946.53411064 0" - 6" 44606 18.4 81.6 6.7 34000 <0.55 1.2 110 0.55 5.1 <0.14 670 2.7 J 13 3.4 24 <1.2 22000 19 3100 190 <0.088 <1.9 4.0 1.3
B 3500 0.52 J <0.28 41 J 28 110 0.32 B 30 46
BA 45 (HA) 2022004043 682389.053909945 1416946.53411064 2' - 2.5' 44606 15.1 84.9 6.8 28000 <0.57 1.7 84 0.56 4.5 <0.15 700 2.8 J 7.6 2.3 16 <1.2 14000 17 2700 130 <0.085 <1.9 2.6 1.5
B 3500 0.64 J <0.29 34 J 21 320 0.28 B 22 43
BB 42 (HA) 2022006249 682702.760176281 1417049.60130604 0" - 6" 44623 14.6 85.4 4.7 31000 <0.45 2.0 130 0.83 4.5 <0.12 190 J 5.1 J 14 57 8.9 <1.2 L 19000 47 4600 270 <0.097 <1.9 7.4
1.6 6700 1.0 J <0.22 35 J 26 77 0.62 36 63
BB 42 (HA) 2022006250 682702.760176281 1417049.60130604 2' - 2.5' 44623 12.9 87.1 4.8 32000 <0.40 1.9 140 0.78 8.4 <0.11 190 J 7.2 J 15 5.8 5.2 <1.1 L 20000 20 5000 310 <0.090 <1.7 8.7
2.0 7300 0.59 J <0.20 62 J 16 320 0.46 33 71
AZ 39 (HA) 2022006251 683009.860964316 1416853.43616115 0" - 6" 44624 19.2 80.8 5.3 64000 <0.39 3.5 280 1.0 11 0.024 J 570 6.3 J 20 7.1 23 <1.2 L 39000 20 6300 330 0.034 J 0.90 J 16
3.6 7300 1.4 <0.19 93 J 91 310 0.58 51 72
AZ 39 (HA) 2022006252 683009.860964316 1416853.43616115 2' - 2.5' 44624 14.5 85.5 5.1 47000 <0.40 3.2 110 0.86 7.9 <0.10 210 J 5.4 J 6.9 3.2 14 <1.2 L 24000 18 3000 140 0.027 J <1.9
4.8 4.6 4000 0.87 J <0.20 96 J 35 360 0.53 43 47
AY 38 (HA) 2022006688 683107.938902395 1416759.50061264 0" - 6" 44627 26.8 73.2 6.2 45000 3<5.3 9.0 210 1.6 9.3 3<1.4 690 3.9 J 7.9 6.8 J 21 <1.4 L 38000 22 5800 370 <0.11 33 7.3 2.2
8000 8.7 J <0.26 56 J 120 160 0.68 J 71 81
AY 38 (HA) 2022006689 683107.938902395 1416759.50061264 2' - 2.5' 44627 19.7 80.3 5 48000 3<5.9 19 190 1.5 12 3<1.5 380 6.9 J 6.9 10 18 <1.2 L 43000 28 7700 450 <0.091 1.7 J 6.3 2.2
8300 7.4 J <0.29 55 J 69 400 0.68 J 89 85
AZ 36 (HA) 2022006690 683289.99784498 1416850.25925796 0" - 6" 44627 14 86 7 3500 3<4.9 8.8 470 1.9 6.4 3<1.3 890 3.2 JS 8.3 11 35 <1.2 LS 38000 19 8400 420 <0.096 18 8.4 1.8 9700 3<13
<0.24 63 J 220 65 0.48 J 96 57
AZ 36 (HA) 2022006691 683289.99784498 1416850.25925796 2' - 2.5' 44627 12.8 87.2 7.1 28000 3<4.4 2.0 430 1.0 7.3 3<1.1 750 2.3 J 6.2 7.0 69 <1.1 L 37000 17 7000 400 <0.092 22 5.2 1.9
9200 1.1 <0.22 48 J 180 250 0.38 J 62 47
AY 33 (HA) 2022006694 683593.478252146 1416731.03501862 0" - 6" 44628 18.2 81.8 6.4 51000 3<5.0 12 540 2.5 13 3<1.3 2000 5.4 BJ 62 19 26 0.38 JL 54000 28 11000 1100 <0.091 3.4 40 2.0
12000 5.6 J <0.25 100 J 260 370 0.61 J 120 79
AY 33 (HA) 2022006695 683593.478252146 1416731.03501862 2' - 2.5' 44628 17.3 82.7 5.7 41000 3<4.5 8.4 340 1.7 12 3<1.2 510 2.8 BJ 42 8.0 17 0.72 JL 50000 28 6400 360 <0.095 <2.0 17 0.35
J 6400 3<12 <0.22 57 J 310 590 0.51 J 110 63
BD 42 (GP) 2022009479 682700.224 1417252.931 0'-1' 44658 21.8 78.2 5.0 H3 29800 <0.916 1.48 241 2.88 <29.1 <0.458 56.6 31 46.4 30.1 82.9 1.76 49300 12.1 9110 1680 0.032 <5.8 25.9 <2.42
9430 0.956 <0.458 <582 26.4 20.3 0.661 149 81.2
BD 42 (GP) 2022009480 682700.224 1417252.931 2'-3' 44658 22.2 77.8 5.0 H3 26900 <0.949 0.933 301 1.94 <29.2 <0.475 46.2 19.3 60.0 109 52.0 2.78 44000 14.9 4930 1060 0.019 <5.8 28.4 <2.45
3780 1.13 <0.475 <584 96.0 24.8 0.576 107 52.2
BD 42 (GP) 2022009481 682700.224 1417252.931 7'-8' 44658 19.6 80.4 5.4 H3 28000 <0.965 1.66 414 3.39 <239 D3 <0.483 808 9.03 10.2 28.5 <47.8 D3 <1.22 55400 10.1 5080 1120 <0.0068 <47.8

D3 38.0 <2.43 <4,780 D3 3.3 <0.483 <4,780 D3 90.4 2.75 <0.483 117 115
BD 42 (GP) 2022009482 682700.224 1417252.931 12'-13' 44658 2 98 5.7 H3 2250 <0.749 1.54 27.7 1.59 <23.6 <0.375 79.6 2.3 3.5 6.59 14.6 <1.02 30200 2.7 110 33.5 <0.0047 <4.7 2.8 <2.06
782 1.01 <0.375 <473 8.9 10.8 <0.375 41.7 16.5
BD 42 (GP) 2022009483 682700.224 1417252.931 17'-18' 44658 8.8 91.2 5.6 H3 10400 < 0.83 1.29 48.2 2.46 <21.1 < 0.415 117 12.1 17.7 36.1 43.2 1.61 20900 12.6 627 36.9 <0.0042 <4.2 3.7
< 2.17 496 0.939 < 0.415 <422 20.3 14.7 < 0.415 33.5 13.0
BD 43 (GP) 2022009471 682597.27 1417261.17 0'-1' 44658 22.9 77.1 6.0 H3 27400 <1.01 3.78 286 1.4 <300 D3 <0.503 633 6.31 <6.0 D3 7.91 <60.1 D3 <1.31 27200 25.1 5960 361 0.027 <60.1 D3
<6.0 D3 <2.58 8490 5.33 <0.503 <6,010 D3 67.8 99.4 0.645 51 95.1
BD 43 (GP) 2022009472 682597.27 1417261.17 2'-3' 44658 17.3 82.7 5.0 H3 19900 <0.97 4.25 164 1.26 <302 D3 <0.485 399 8.79 <6.0 D3 10.4 <60.5 D3 <1.23 26500 27.5 4490 349 <0.0053 <60.5
D3 <6.0 D3 <2.49 <6,050 D3 7.18 <0.485 <6,050 D3 20.5 382 <0.485 48.9 85.7
BD 43 (GP) 2022009473 682597.27 1417261.17 7'-8' 44658 15.3 84.7 4.9 H3 27000 <0.952 2.05 226 1.17 <24.6 <0.476 379 10.9 3.7 8.31 13.7 <1.18 29000 21.3 5980 408 <0.0063 <4.9 2.2 <2.37
11800 3.12 <0.476 <492 35.7 231 0.809 47.5 92.7
BD 43 (GP) 2022009474 682597.27 1417261.17 12'-13' 44658 17.5 82.5 4.8 H3 27400 <0.879 2.5 341 1.44 <27.0 <0.439 295 6.88 2.6 9.21 <5.4 <1.19 29400 21.8 6190 429 <0.0056 <5.4 3.1 <2.33
10300 3.8 <0.439 <541 49.8 199 0.841 56.5 89.6
AY 33 (GP) 2022009519 683593.89 1416725.79 0' - 1' 44659 17.6 82.4 6.1 42700 <0.952 3.39 367 1.51 <28.1 <0.476 460 <1.21 131 10.2 23.5 1.63 51400 18.7 8590 309 0.025 <5.6 36.9 <2.42
7350 3.55 <0.476 <562 127 <121 0.73 95.5 63.4
AY 33 (GP) 2022009520 683593.89 1416725.79 2' - 3' 44659 15.7 84.3 6.4 41600 <0.935 4.9 437 1.81 <27.0 <0.468 756 <1.16 83.4 15 17.6 1.89 45900 13.8 9830 616 0.036 <5.4 43.8 <2.32 10300
6.85 <0.468 <5,390 D3 189 <116 0.6 76 58.8
AY 38 (GP) 2022010109 683116.17 1416734.03 0' - 1' 44659 4.8 95.2 5.2 H3 21,900 M1 3<0.835 2.23 75.4 0.651 <19.6 M1 <0.418 305 1.42 9.7 5.92 12.5 <1.05 24,900 M1 14.6 1,970 M1 164 M1
0.044 <3.9 M1 5.6 <2.09 1,270 M1 2.29 <0.418 <392 15.9 M1 150 3<0.418 60.1 31.6
AY 38 (GP) 2022010110 683116.17 1416734.03 2' - 3' 44659 4 85.8 5.4 H3 30900 3<0.815 5.54 139 0.796 <123 D3 <0.408 198 4.05 5.0 5.18 <24.6 D3 <1.17 30300 28 6310 402 0.013 <24.6 D3 4.9
<2.08 7920 6.8 <0.408 <2,460 D3 39.7 123 0.506 49.6 74.0
AZ 36 (GP) 2022009529 683309.73 1416832.87 0' - 1' 44659 16 84 4.7 H3 45100 <0.921 3.96 585 2.14 <24.0 <0.461 5620 1.86 51.4 26.3 37.8 1.73 49300 17.3 18900 520 0.012 <4.8 51.7 <2.36
17000 4.12 <0.461 <4,800 D3 123 <118 0.785 87.6 92.8
AZ 36 (GP) 2022009530 683309.73 1416832.87 2' - 3' 44659 15 85 4.5 H3 34800 <0.882 2.7 600 1.84 <26.7 <0.441 3040 1.99 36.2 21.2 39.5 <1.17 36000 12.9 13700 376 <0.0064 <5.3 38.3 <2.31
10300 2.93 <0.441 <535 269 <115 0.526 70.3 67.7
AZ 39 (GP) 2022009513 683013.21 1416841.1 0' - 1' 44659 17.7 82.3 5.1 H3 58000 <0.953 2.43 106 0.816 <27.1 <0.476 131 1.23 12.3 3.26 20.9 <1.17 35300 17.2 2070 178 0.044 <5.4 6.9 <2.40
2190 1.98 <0.476 <542 35.1 <120 0.494 81.4 36.1
AZ 39 (GP) 2022009514 683013.21 1416841.1 2' - 3' 44659 18.2 81.8 5.7 H3 82300 <1.06 2.42 195 1.65 <28.3 <0.531 41.3 2.95 9.5 7.63 75.7 <1.17 39900 24.8 4470 252 0.032 <5.7 7.2 <2.65
4860 2.25 <0.531 <566 56.9 <133 0.619 67.1 65.3
AZ 46 (GP) 2022009508 682304.87 1416845.22 0'-1' 44659 16.4 83.6 7.3 H3 24200 <0.933 1.29 320 1.41 <27.2 <0.466 849 <1.16 12.5 4.5 88.8 <1.45 47300 20.1 6130 1280 0.016 <5.4 11.8 <2.33
7720 1.44 <0.466 <544 84.8 <116 0.467 75.8 72.9
AZ 46 (GP) 2022009509 682304.87 1416845.22 2'-3' 44659 18.1 81.9 7.2 H3 36900 <0.946 1.72 685 2.66 <26.8 <0.473 1310 <1.22 13.8 23.9 42.5 <1.61 56400 23.6 10600 642 0.035 <5.4 19.2 <2.44
13000 2.68 <0.473 <536 124 <122 0.754 111 84.1
BA 45 (GP) 2022009501 682395.47 1416939.94 0'-1' 44659 16.8 83.2 5.1 H3 20200 <0.959 0.889 84.1 0.584 <26.8 <0.479 981 2.83 9.6 3.07 30.5 <1.21 17900 16.1 2060 124 <0.0055 <5.4 3.5 <2.39
2640 0.964 <0.479 <537 39.3 89.2 <0.479 22.3 32.1
BA 45 (GP) 2022009502 682395.47 1416939.94 2'-3' 44659 23.7 76.3 7.1 H3 53000 <1.01 2.66 1240 1.91 <303 D3 <0.504 1550 12.7 94.7 18.5 104 <1.29 65300 16.5 24000 1310 0.022 <60.7 D3 55.9
<2.53 24100 3.65 <0.504 <6,070 D3 44.3 731 1.3 164 181
BA 45 (GP) 2022009503 682395.47 1416939.94 7'-8' 44659 24.3 75.7 4.2 H3 32900 <0.987 1.24 484 3.02 <280 D3 <0.494 276 12.4 32.8 22.5 <56.0 D3 <1.31 57000 13.8 9070 1430 0.0072 <56.0
D3 28.1 <2.56 4460 2.4 <0.494 <560 D3 33.9 1050 0.665 123 108
BB 42 (GP) 2022009488 682708.46 1417055.25 0'-1' 44659 11.6 88.4 4.9 H3 19500 <0.88 0.863 130 0.781 <25.2 <0.44 112 10.8 12.8 5.93 <5.0 <1.15 14900 12.3 4470 337 0.0097 <5.0 6.7 <2.26
6520 1.36 <0.44 <505 14.7 339 <0.44 28.9 64.9
BB 42 (GP) 2022009489 682708.46 1417055.25 2'-3' 44659 10.5 89.5 5.3 H3 18100 <0.852 0.892 127 0.727 <21.8 <0.426 47.6 9.61 10.9 7.13 <4.4 <1.12 14100 15.2 4260 275 <0.0052 <4.4 6.4
<2.22 6520 1.57 <0.426 <436 12.2 106 <0.426 24.5 54.9
BB 42 (GP) 2022009490 682708.46 1417055.25 7'-8' 44659 11.8 88.2 4.6 H3 22700 <0.902 0.829 116 0.85 <23.6 <0.451 55.5 13.5 11.6 5.45 <4.7 <1.13 15000 11.6 4390 251 0.0055 <4.7 6.3 <2.27
6620 1.39 <0.451 <472 9.7 481 <0.451 25.9 67.5
BB 44 (GP) 2022009495 682519.02 1417038.78 0'-1' 44659 18.5 81.5 4.9 H3 22900 <0.867 3.92 177 1.13 <284 D3 <0.433 286 4.20 8.4 6 <56.8 D3 <1.20 26500 20.1 3700 387 0.051 <56.8 D3 15.0
<2.40 <5,680 D3 5.61 <0.433 <5,680 D3 33.7 379 <0.433 51.5 79.0
BB 44 (GP) 2022009496 682519.02 1417038.78 2'-3' 44659 12.6 87.4 5.1 H3 13400 <0.891 2.89 93.8 1.21 <24.7 <0.445 114 6.06 2.2 4.78 <4.9 <1.13 18000 16.2 2400 292 0.011 <4.9 5.2 <2.20
2330 4.08 <0.445 <493 23.1 184 <0.445 42.5 53.1
Notes for Table 4: Potential Borrow Source Material Analytical Results - Inorganic Compounds
1804 Phase 1 Dry Ash Landfill (Permit No. INDUS-1804)
Duke Energy Marshall Steam Station
S&ME Project Number: 212013, Ph. 06
Notes:
Bold concentrations indicate the result is greater than one or more of the three screening criteria
Bold , yellow highlighted concentrations indicates the result is greater than all three screening criteria
Constituents highlighted in green are considered Constituents of Interest (COIs) for Marshall Steam Station3
(1) H3 = Sample was received or analysis requested beyond the recognized method holding time.
(2) L1 = Analyte recovery in the laboratory control sample (LCS) was above quality control (QC) limits. Results for this analyte in associated samples may be biased high
(3) D3 = Sample was diluted due to the presence of high levels of non-target analytes or other matrix interference

(4) M1 = Matrix spike (MS) recovery exceeded QC limits. Batch accepted based on laboratory control sample (LCS) recovery
(5) M0 = Matrix spike recovery and/or matrix spike duplicate (MSD) recovery was outside laboratory control limits
(6) MH = MS recovery and/or MSD recovery was above laboratory control limits. Result may be biased high
(7) Relative percent difference (RPD) value was outside control limits
(8) J = Estimated concentration above the adjusted method detection limit and below the adjusted reporting limit
(9) S = MS/MSD failure
(10) B = Detected in the method blank
(11) H = Due to an error at the vendor laboratory, the total Hexavalent Chromium analysis was performed past the method recommended holding time
(12) E = Quantitation of compound exceeded the calibration range
(13) HA = Hand Auger
(14) GP = Geoprobe
(15) CAMA = Coal Ash Management Act
(16) PSRG = Preliminary Soil Remediation Goals
1 CAMA Background Threshold Values (BTVs) were calculated using data from background unsaturated soil samples collected from June 2015 to August 2018
2 Duke Energy Piedmont Regional BTV ranges include the Duke Energy calculated 2017 and 2019 BTVs from 10 Duke Energy facilities located in the Piedmont physiographic region (Allen Steam
Station, Belews Creek Steam Station, Buck Steam Station, Cape Fear Steam Electric Plant, Cliffside Steam Station, Dan River Steam Station, Marshall Steam Station, Mayo Steam Electric
Plant, Riverbend Steam Station, and Roxboro Steam Electric Plant)
3 There are 22 COIs for Marshall Steam Station per the Comprehensive Site Assessment Update, Synterra, 2018. However, analysis of 2 of the COIs (lithium and total radium) were not required
per the Excavation Soil Sampling Plan for Marshall Steam Station Dry Ash Landfill Phase I (Permit No. INDUS-1804), Revision 2, 2019. Total dissolved solids (TDS) is also included as
a COI for Marshall Steam Station, but TDS cannot be analyzed for in soil or SPLP samples.
Table 5: Potential Borrow Source Material Analytical Results Synthetic Precipitation Leaching Procedure (SPLP)
1804 Phase 1 Dry Ash Landfill (Permit No. INDUS-1804)
Duke Energy Marshall Steam Station
S&ME Project Number: 212013, Ph. 06
Reporting Units µg/L µg/L µg/L µg/L µg/L µg/L µg/L mg/L mg/L µg/L µg/L µg/L µg/L µg/L µg/L mg/L µg/L µg/L µg/L µg/L mg/L mg/L µg/L µg/L mg/L µg/L mg/L µg/L µg/L µg/L
15A NCAC 2L Standard1 NE 1 10 700 4 700 2 NE 250 10 1 1000 NE 300 15 NE 50 1 NE 100 10 NE 20 20 NE NE 250 2 7 1000
S&ME Sample ID Duke Energy Sample ID Northing Easting Sample Depth Date Collected Aluminum Antimony Arsenic Barium Beryllium Boron Cadmium Calcium Chloride Chromium Cobalt Copper Hexavalent
Chromium Iron Lead Magnesium Manganese Mercury Molybdenum Nickel Nitrate - N Potassium Selenium Silver Sodium Strontium Sulfate Thallium Vanadium Zinc
BD 43 (HA) 2022003724 682598.860999675 1417258.13042207 0" - 6" 44601 <400 <2.0 <2.0 16 BJ <0.40 66 <0.50 2.9 J <1.0 <10 <5.0 <10 <20 L <100 <1.0 <5.0 <15 <0.2 <40 <40 0.23 2.1 J <5.0
<1.0 <5.0 62 4.5 <0.50 <5.0 2.9 J
BD 43 (HA) 2022003725 682598.860999675 1417258.13042207 2' - 2.5' 44601 <400 <2.0 <2.0 25 BJ <0.40 59 <0.50 2.0 J <1.0 <10 <5.0 <10 <20 L <100 <1.0 <5.0 3.4 J <0.2 <40 <40 0.22 2.1 J
<5.0 <1.0 <5.0 34 6.2 <0.50 <5.0 <20
BB 44 (HA) 2022004036 682501.847257945 1417044.36013347 0" - 6" 44603 <400 <2.0 <2.0 17 J <0.40 31 J <0.50 1.0 J <1.0 <10 <5.0 <10 <20 L <100 <1.0 0.77 J 5.1 J <0.2 <40 <40 0.13 1.4
J 1.3 J <1.0 2.5 J 24 6.8 0.44 J <5.0 <20
BB 44 (HA) 2022004037 682501.847257945 1417044.36013347 2' - 2.5' 44603 <400 0.91 J <2.0 7.6 J <0.40 <50 <0.50 <5.0 0.25 J <10 <5.0 <10 <20 L <100 <1.0 <5.0 <15 <0.2 <40 <40 0.33 <5.0
<5.0 <1.0 1.0 J 5.0 J 0.55 J 0.20 J <5.0 <20
BD 42 (HA) 2022004038 682697.506302904 1417250.71744506 0" - 6" 44603 <400 <2.0 <2.0 12 J <0.40 <50 <0.50 <5.0 0.45 J <10 <5.0 <10 <20 L <100 <1.0 <5.0 4.2 J <0.2 <40 <40 0.10 1.2 J
<5.0 <1.0 0.95 J 8.4 J 3.5 0.18 J <5.0 <20
BD 42 (HA) 2022004039 682697.506302904 1417250.71744506 2' - 2.5' 44603 <400 <2.0 <2.0 8.9 J <0.40 <50 <0.50 <5.0 0.35 J <10 <5.0 <10 <20 L <100 <1.0 <5.0 3.2 J <0.2 <40 <40 0.22 0.91
J <5.0 <1.0 1.1 J 6.1 J 2.4 <0.50 <5.0 <20
AZ 46 (HA) 2022004040 682297.429697791 1416845.11298685 0" - 6" 44606 <400 <2.0 <2.0 12 J <0.40 120 <0.50 4.8 J <1.0 <10 <5.0 <10 <20 L <100 <1.0 <5.0 <15 <0.2 210 <40 0.14 1.7 J <5.0
<1.0 0.89 J 110 5.4 <0.50 <5.0 <20
AZ 46 (HA) 2022004041 682297.429697791 1416845.11298685 2' - 2.5' 44606 <400 <2.0 <2.0 15 J <0.40 140 <0.50 14 <1.0 <10 <5.0 <10 <20 L <100 <1.0 <5.0 <15 <0.2 <40 <40 0.13 3.0 J <5.0
<1.0 0.97 J 260 24 <0.50 <5.0 <20
BA 45 (HA) 2022004042 682389.053909945 1416946.53411064 0" - 6" 44606 <400 <2.0 <2.0 11 J <0.40 100 <0.50 3.7 J <1.0 <10 <5.0 <10 <20 L <100 <1.0 <5.0 <15 <0.2 <40 <40 0.13 2.0 J <5.0
<1.0 0.90 J 58 6.4 <0.50 <5.0 <20
BA 45 (HA) 2022004043 682389.053909945 1416946.53411064 2' - 2.5' 44606 <400 <2.0 <2.0 9.3 J <0.40 100 <0.50 7.6 <1.0 <10 <5.0 <10 <20 L <100 <1.0 <5.0 <15 <0.2 <40 <40 2.0 2.8 J <5.0
<1.0 1.9 J 88 16 <0.50 <5.0 <20
BB 42 (HA) 2022006249 682702.760176281 1417049.60130604 0" - 6" 44623 <400 <2.0 <2.0 28 <0.40 110 <0.50 1.4 J 0.27 J <10 <5.0 <10 <20 <100 <1.0 <5.0 11 J <0.2 <40 <40 0.083 B 2.5 J <5.0
<1.0 1.8 BJ 42 7.6 <0.50 <5.0 <20
BB 42 (HA) 2022006250 682702.760176281 1417049.60130604 2' - 2.5' 44623 <400 <2.0 <2.0 9.6 J <0.40 260 <0.50 2.4 J 0.38 J <10 1.8 J <10 <20 <100 <1.0 2.4 J 46 <0.2 <40 <40 0.089 B 1.2
J <5.0 <1.0 2.9 BJ 5.4 J 18 <0.50 <5.0 <20
AZ 39 (HA) 2022006251 683009.860964316 1416853.43616115 0" - 6" 44624 <400 0.70 BJ <2.0 17 J <0.40 240 <0.50 3.3 J 0.30 J <10 <5.0 <10 <20 <100 <1.0 1.5 J 88 <0.2 <40 <40 0.21 B 3.1
J <5.0 <1.0 3.3 BJ 57 19 0.16 J <5.0 <20
AZ 39 (HA) 2022006252 683009.860964316 1416853.43616115 2' - 2.5' 44624 <400 <2.0 <2.0 9.8 J <0.40 180 <0.50 2.7 J 0.28 J <10 <5.0 <10 <20 <100 <1.0 2.8 J 81 <0.2 <40 <40 0.30 B 1.8
J <5.0 <1.0 4.8 BJ 39 23 <0.50 <5.0 <20
AY 38 (HA) 2022006688 683107.938902395 1416759.50061264 0" - 6" 44627 <400 <2.0 <2.0 15 J <0.40 120 <0.50 3.6 J <1.0 10 <5.0 <10 <20 <100 <1.0 <5.0 5.6 J <0.2 7.6 J <40 0.10 2.2 J <5.0
<1.0 1.6 BJ 84 9.9 0.88 B <5.0 <20
AY 38 (HA) 2022006689 683107.938902395 1416759.50061264 2' - 2.5' 44627 <400 <2.0 <2.0 13 J <0.40 270 <0.50 3.8 J 0.38 J 10 3.5 J <10 <20 <100 <1.0 1.8 J 140 <0.2 <40 <40 0.081 4.3 J
<5.0 <1.0 1.9 BJ 87 21 0.46 BJ <5.0 <20

AZ 36 (HA) 2022006690 683289.99784498 1416850.25925796 0" - 6" 44627 590 1.1 BJ <2.0 28 <0.40 100 <0.50 3.4 J <1.0 1.4 J <5.0 <10 <20 540 0.36 J <5.0 3.2 J <0.2 390 <40 0.067 2.9 J 1.6
J <1.0 2.0 BJ 110 6 0.22 BJ 3.7 J <20
AZ 36 (HA) 2022006691 683289.99784498 1416850.25925796 2' - 2.5' 44627 810 <2.0 <2.0 1200 3.9 200 <0.50 29 <1.0 10 3.9 J 7.0 J <20 <100 0.37 J 1.6 J 91 <0.2 <40 <40 39 E 10 <5.0 S <1.0
2.0 BJ 960 9.6 0.22 BJ <5.0 3.9 J
AY 33 (HA) 2022006694 683593.478252146 1416731.03501862 0" - 6" 44628 <400 <2.0 <2.0 15 J <0.40 350 <0.50 8.1 <1.0 3.1 J <5.0 <10 <20 <100 <1.0 2.3 J <15 <0.2 <40 <40 0.27 3.7 J <5.0
<1.0 2.3 BJ 170 24 <0.50 <5.0 <20
AY 33 (HA) 2022006695 683593.478252146 1416731.03501862 2' - 2.5' 44628 3800 <10 10 780 4.1 400 <2.5 24 <1.0 3.4 J <25 13 <20 67 J 15 14 76 <0.2 <40 <40 80 E 7.0 <25 <1.0 1.4 BJ 40 13
1.0 BJ <5.0 40
BD 42 (GP) 2022009479 682700.22 1417252.93 0'-1' 44658 <100 H2 <2.00 <1.00 <50 H2 <1.00 <200 H2 <1.00 <1.0 H2 2.72 <5.0 H2 <1.00 <5.0 H2 <0.5 <50 H2 <1.00 <0.50 H2 <5.0 H2 <0.2 <5.0
H2 <5.0 H2 <0.500 <5.0 H2 <1.0 <1.00 <5.0 H2 <5.0 H2 0.864 <1.00 5.44 <50 H2
BD 42 (GP) 2022009480 682700.22 1417252.93 2'-3' 44658 <100 H2 <2.00 <1.00 <50 H2 <1.00 <200 H2 <1.00 <1.0 H2 1.21 <5.0 H2 <1.00 <5.0 H2 <0.5 <50 H2 <1.00 <0.50 H2 <5.0 H2 <0.2 <5.0
H2 <5.0 H2 <0.500 <5.0 H2 <1.0 <1.00 <5.0 H2 <5.0 H2 1.65 <1.00 2.10 <50 H2
BD 42 (GP) 2022009481 682700.22 1417252.93 7'-8' 44658 180 H2 <2.00 <1.00 <50 H2 <1.00 <200 H2 <1.00 <1.0 H2 1.17 <5.0 H2 <1.00 <5.0 H2 0.508 1700 H2 <1.00 <0.50 H2 7.0 H2 <0.2 <5.0
H2 <5.0 H2 <0.500 <5.0 H2 <1.0 <1.00 7.6 H2 <5.0 H2 1.99 <1.00 3.40 <50 H2
BD 42 (GP) 2022009482 682700.22 1417252.93 12'-13' 44658 1100 H2 <2.00 <1.00 <50 H2 <1.00 <200 H2 <1.00 <1.0 H2 0.75800 <5.0 H2 <1.00 <5.0 H2 <0.5 1100 H2 <1.00 <0.50 H2 <5.0 H2 <0.2
<5.0 H2 <5.0 H2 <0.500 <5.0 H2 <1.0 <1.00 6.0 H2 <5.0 H2 4.03 <1.00 <1.00 <50 H2
BD 42 (GP) 2022009483 682700.22 1417252.93 17'-18' 44658 <100 <2.00 <1.00 <50 H2 <1.00 <200 <1.00 < 1.00 0.413 <5.0 <1.00 <5.0 <0.5 <50 < 1.0 <0.50 H2 <5.0 <0.2 <5.0 H2 <5.0 <0.500 <5.0
H2 < 1.0 <1.00 < 5.0 <5.0 4.49 <1.00 < 1.0 <50 H2
BD 43 (GP) 2022009471 682597.27 1417261.17 0'-1' 44658 270 H2 <2.00 <1.00 <50 H2 <1.00 <200 H2 <1.00 <1.0 H2 0.42800 <5.0 H2 <1.00 <5.0 H2 <0.5 310 H2 1.56 <0.50 H2 <5.0 H2 <0.2 <5.0
H2 <5.0 H2 <0.500 <5.0 H2 1.3 <1.00 <5.0 H2 25 H2 7.12 <1.00 2.87 <50 H2
BD 43 (GP) 2022009472 682597.27 1417261.17 2'-3' 44658 <100 H2 <2.00 <1.00 <50 H2 <1.00 <200 H2 <1.00 1.7 H2 0.44100 <5.0 H2 1.34 <5.0 H2 <0.5 <50 H2 3.34 <0.50 H2 8.7 H2 <0.2 <5.0 H2
<5.0 H2 <0.500 <5.0 H2 2.6 <1.00 <5.0 H2 11 H2 8.49 <1.00 6.73 <50 H2
BD 43 (GP) 2022009473 682597.27 1417261.17 7'-8' 44658 <100 H2 <2.00 <1.00 <50 H2 <1.00 <200 H2 <1.00 1.2 H2 0.53000 <5.0 H2 <1.00 <5.0 H2 <0.5 <50 H2 <1.00 <0.50 H2 10 H2 <0.2 <5.0
H2 <5.0 H2 <0.500 <5.0 H2 <1.0 <1.00 <5.0 H2 <5.0 H2 9.02 <1.00 <1.00 <50 H2
BD 43 (GP) 2022009474 682597.27 1417261.17 12'-13' 44658 <100 H2 <2.00 <1.00 <50 H2 <1.00 <200 H2 <1.00 <1.0 H2 4.56 <5.0 H2 <1.00 <5.0 H2 <0.5 <50 H2 <1.00 <0.50 H2 9.8 H2 <0.2 <5.0
H2 <5.0 H2 <0.500 <5.0 H2 <1.0 <1.00 <5.0 H2 6.0 J 9.14 <1.00 1.43 <50 H2
AY 33 (GP) 2022009519 683593.893 1416725.79 0' - 1' 44659 <100 <2.00 <1.00 <50 <1.00 <200 <1.00 1.7 0.52000 <5.0 <1.00 <5.0 <0.5 <50 <1.00 5.0 <5.0 <0.2 <5.0 <5.0 <0.500 <5.0 5.63 <1.00
<5.0 14 45.8 <1.00 <1.00 <50
AY 33 (GP) 2022009520 683593.893 1416725.79 2' - 3' 44659 520 <2.00 <1.00 <50 <1.00 850 <1.00 1.6 0.88700 <5.0 <1.00 75 1 630 <1.00 1.8 160 <0.2 <5.0 8.8 <0.500 <5.0 8.66 <1.00 93.4
6.1 17.2 <1.00 5.48 <50
AY 38 (GP) 2022010109 683116.17 1416734.03 0' - 1' 44659 <100 <2.00 <1.00 71 <1.00 <200 <1.00 9.0 0.71500 <5.0 <1.00 <5.0 P8 <0.5 110 <1.00 3.9 130 <0.20 M0, L1 <5.0 <5.0 <0.500 <5.0
3.92 <1.00 <5.0 140 26.8 <1.00 <1.00 <50
AY 38 (GP) 2022010110 683116.17 1416734.03 2' - 3' 44659 <100 <2.00 <1.00 51 <1.00 <200 <1.00 6.3 1.32 <5.0 1.16 <5.0 P8 <0.5 100 <1.00 4.7 320 <0.20 L1 <5.0 <5.0 <0.500 <5.0 4.39 <1.00
<5.0 78 26.9 <1.00 <1.00 <50
AZ 36 (GP) 2022009529 683309.73 1416832.87 0' - 1' 44659 <100 <2.00 <1.00 <50 <1.00 <200 <1.00 1.7 1.09 <5.0 <1.00 <5.0 <0.5 <50 <1.00 2.6 17 <0.2 H2 <5.0 <5.0 <0.500 <5.0 1.1 <1.00
<5.0 29 33.2 <1.00 <1.00 <50
AZ 36 (GP) 2022009530 683309.73 1416832.87 2' - 3' 44659 <100 <2.00 <1.00 <50 <1.00 <200 <1.00 <1.0 1.37 <5.0 <1.00 <5.0 <0.5 <50 <1.00 4.1 33 <0.2 H2 <5.0 <5.0 0.518 <5.0 <1.0 <1.00
<5.0 5.3 42.2 <1.00 <1.00 110
AZ 39 (GP) 2022009513 683013.21 1416841.1 0' - 1' 44659 <100 <2.00 <1.00 <50 <1.00 <200 <1.00 <1.0 0.73800 <5.0 <1.00 <5.0 <0.5 <50 <1.00 3.7 44 <0.2 <5.0 <5.0 <0.500 <5.0 <1.0 <1.00
<5.0 17 17.0 <1.00 <1.00 <50
AZ 39 (GP) 2022009514 683013.21 1416841.1 2' - 3' 44659 <100 <2.00 <1.00 <50 <1.00 <200 <1.00 <1.0 1.99 <5.0 <1.00 <5.0 <0.5 <50 <1.00 <0.50 <5.0 <0.2 <5.0 <5.0 <0.500 <5.0 2.38 <1.00
<5.0 <5.0 7.53 <1.00 <1.00 <50
AZ 46 (GP) 2022009508 682304.87 1416845.22 0'-1' 44659 <100 <2.00 <1.00 <50 <1.00 <200 <1.00 3.9 0.62100 <5.0 <1.00 <5.0 <0.5 <50 <1.00 <0.50 <5.0 <0.2 24 <5.0 <0.500 <5.0 <1.0 <1.00
<5.0 95 18.1 <1.00 <1.00 <50
AZ 46 (GP) 2022009509 682304.87 1416845.22 2'-3' 44659 <100 <2.00 <1.00 <50 <1.00 <200 <1.00 6.5 0.66400 <5.0 <1.00 <5.0 <0.5 <50 <1.00 <0.50 <5.0 <0.2 8.1 <5.0 <0.500 <5.0 <1.0 <1.00
<5.0 130 40.1 <1.00 <1.00 <50
BA 45 (GP) 2022009501 682395.47 1416939.94 0'-1' 44659 600 <2.00 <1.00 <50 <1.00 <200 <1.00 2.7 1.68 <5.0 <1.00 <5.0 <0.5 610 <1.00 <0.50 <5.0 <0.2 18 <5.0 <0.500 <5.0 <1.0 <1.00 7.8
34 10.4 <1.00 <1.00 <50
BA 45 (GP) 2022009502 682395.47 1416939.94 2'-3' 44659 <100 <2.00 <1.00 <50 <1.00 <200 <1.00 6.1 1.33 <5.0 <1.00 <5.0 <0.5 <50 <1.00 0.64 5.6 <0.2 <5.0 <5.0 <0.500 5.1 <1.0 <1.00 <5.0
86 36.2 <1.00 <1.00 <50
BA 45 (GP) 2022009503 682395.47 1416939.94 7'-8' 44659 180 <2.00 <1.00 <50 <1.00 <200 <1.00 1.7 1.33 <5.0 4.45 <5.0 <0.5 <50 <1.00 6.9 87 <0.2 <5.0 <5.0 <0.500 <5.0 1.46 <1.00 <5.0 11
51.8 <1.00 <1.00 <50
BB 42 (GP) 2022009488 682708.46 1417055.25 0'-1' 44659 460 H2 <2.00 <1.00 <50 H2 <1.00 <200 H2 <1.00 <1.0 H2 0.78700 <5.0 H2 3.15 <5.0 H2 <0.5 220 H2 <1.00 0.99 H2 46 H2 <0.2 <5.0 H2
<5.0 H2 <0.500 <5.0 H2 1.42 <1.00 <5.0 H2 6.9 H2 19.4 <1.00 <1.00 <50 H2
BB 42 (GP) 2022009489 682708.46 1417055.25 2'-3' 44659 210 H2 <2.00 <1.00 <50 H2 <1.00 <200 H2 <1.00 <1.0 H2 0.62300 <5.0 H2 <1.00 <5.0 H2 <0.5 <50 H2 1.13 <0.50 H2 <5.0 H2 <0.2 <5.0
H2 <5.0 H2 <0.500 <5.0 H2 4.27 <1.00 <5.0 H2 <5.0 H2 9.81 <1.00 1.39 <50 H2
BB 42 (GP) 2022009490 682708.46 1417055.25 7'-8' 44659 <100 H2 <2.00 <1.00 <50 H2 <1.00 <200 H2 <1.00 <1.0 H2 3.75 <5.0 H2 1.17 <5.0 H2 <0.5 <50 H2 <1.00 1.9 H2 30 H2 <0.2 <5.0 H2 <5.0
H2 <0.500 <5.0 H2 1.84 <1.00 <5.0 H2 <5.0 H2 25.8 <1.00 <1.00 <50 H2
BB 44 (GP) 2022009495 682519.02 1417038.78 0'-1' 44659 <100 H2 <2.00 <1.00 <50 H2 <1.00 <200 H2 <1.00 <1.0 H2 0.84400 <5.0 H2 <1.00 <5.0 H2 <0.5 <50 H2 <1.00 1.4 H2 29 H2 <0.2 <5.0 H2
<5.0 H2 <0.500 <5.0 H2 <1.0 <1.00 <5.0 H2 29 H2 23.6 <1.00 <1.00 <50 H2

BB 44 (GP) 2022009496 682519.02 1417038.78 2'-3' 44659 <100 H2 <2.00 <1.00 <50 H2 <1.00 <200 H2 <1.00 <1.0 H2 0.94100 <5.0 H2 <1.00 <5.0 H2 <0.5 <50 H2 <1.00 <0.50 H2 <5.0 H2 <0.2 <5.0
H2 <5.0 H2 <0.500 <5.0 H2 2.06 <1.00 <5.0 H2 14 H2 14.4 <1.00 <1.00 <50 H2
Notes for Table 5: Potential Borrow Source Material Analytical Results - Synthetic Precipitation Leaching Procedure (SPLP)
1804 Phase 1 Dry Ash Landfill (Permit No. INDUS-1804)
Duke Energy Marshall Steam Station
S&ME Project Number: 212013, Ph. 06
Notes:
Bold , yellow highlighted concentrations indicates the result is greater than the 15A NCAC 2L Standard
Constituents highlighted in green are considered Constituents of Interest (COIs) for Marshall Steam Station2
(1) H2 = Extraction or preparation conducted outside EPA method holding time
(2) L1 = Analyte recovery in the laboratory control sample (LCS) was above quality control (QC) limits. Results for this analyte in associated samples may be biased high
(3) L = LCS/laboratory control sample duplicate (LCSD) failure
(4) P8 = Analyte was detected in the method blank. All associated samples had concentrations of at least ten times greater than the blank or were below the reporting limit.
(5) M0 = Matrix spike (MS) recovery and/or matrix spike duplicate (MSD) recovery was outside laboratory control limits
(6) J = Estimated concentration above the adjusted method detection limit and below the adjusted reporting limit
(7) S = MS/MSD failure
(8) B = Detected in the method blank
(9) E = Quantitation of compound exceeded the calibration range
(10) HA = Hand Auger
(11) GP = Geoprobe
(12) NE = Not Established
1 15A NCAC 2L Standard refers to Class GA Standards as found in 15A NCAC 02L .0202 Groundwater Quality Standards (last amended on April 1, 2022)
2 There are 22 COIs for Marshall Steam Station per the Comprehensive Site Assessment Update, Synterra, 2018. However, analysis of 2 of the COIs (lithium and total radium) were not required
per the Excavation Soil Sampling Plan for Marshall Steam Station Dry Ash Landfill Phase I (Permit No. INDUS-1804), Revision 2, 2019. Total dissolved solids (TDS) is also included as
a COI for Marshall Steam Station, but TDS cannot be analyzed for in soil or SPLP samples.