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Home My WebLink AboutDSHW-2024-004914DEPARTMENT OF THE ARMY TOOELE ARMY DEPOT/HEADQUARTERS 1 TOOELE ARMY DEPOT, BUILDING 1 TOOELE, UT 84074-5003 *I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gathered and evaluated the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fines and imprisonment for knowing violations. February 27, 2024 SUBJECT: Tooele Army Depot Spring Groundwater Sampling Notification, Tooele Army Depot North Area (TEAD-N), State/EPA I.D. Number UT3213820894. Mr. Doug Hansen Director, Division Waste Management and Radiation Control 195 North 1950 West Salt Lake City, UT 84114-4880 Dear Mr. Hansen: TEAD is submitting the 7-Day notification of the commencement of the spring 2024 groundwater sampling event scheduled to begin 18 March 2024. Attached to this cover letter is the TEAD-N Spring 2024 Semi-Annual Post Closure and System Start-up Remedy Groundwater Monitoring Sampling and Analysis Plan. If you have any questions regarding this request, please contact Tyson Erickson at (435) 833-3235. Sincerely, Erin Trinchitella Director of Base Operations *CERTIFICATION STATEMENT Site Well ID Sample ID Matrix Sample Depth1 (feet bgs) Hydrasleeve Size (mL) QC Samples Sampling Event Type VOCs Short List / SW8260C VOCs Long List / SW8260C Field Parameters3 Sampling Objective Notes SWMU 58 B 16 TEAD 03 24 B16 HY 290 Groundwater 290 600 FD SA X X Evaluation of the 5 ppb boundary FD ID= TEAD 03 24 S B16 HY 300 Building 620 / C Avenue B 26 TEAD 03 24 B26 HY 319 Groundwater 319 600 MS/MSD A2/RM X X Source Area Corrective Measures Evaluation and plume stability SWMU 58 B 40 TEAD 03 24 B40 HY 179 Groundwater 179 600 FD SA X X Well needed for stability evaluation FD ID= TEAD 03 24 S B40 HY 189 SWMU 58 B 42 TEAD 03 24 B42 HY 195 Groundwater 195 600 MS/MSD SA X X Sentinel Well SWMU 58 C 03 TEAD 03 24 C03 HY 263 Groundwater 263 600 MS/MSD SA X X Sentinel Well SWMU 58 C 04 TEAD 03 24 C03 HY 240 Groundwater 240 600 SA X X Sentinel Well Building 615 C 19 TEAD 03 24 C19 HY 358 Groundwater 358 600 FD A2/RM X X Source Area Corrective Measures Evaluation and plume stability FD ID= TEAD 03 24 S C19 HY 368 Replace with one 600; two 2000 Building 679 C 24 TEAD 03 24 C24 HY 375 Groundwater 375 600 A2/RM X X Source Area Corrective Measures Evaluation and plume stability Building 679 C 26 TEAD 03 24 C26 HY 368 Groundwater 368 600 A2/RM X X Source Area Corrective Measures Evaluation and plume stability Replace with one 600; one 2000 Building 679 C 33 TEAD 03 24 C33 HY 363 Groundwater 363 600 FD A2/RM X X Source Area Corrective Measures Evaluation and plume stability FD ID= TEAD 03 24 S C33 HY 373 Building 620 / C Avenue C 35 TEAD 03 24 C35 HY 320 Groundwater 320 600 MS/MSD A2/RM X X Source Area Corrective Measures Evaluation and plume stability Replace with one 600; three 2000 Building 620 / C Avenue C 37 TEAD 03 24 C37 HY 437 Groundwater 437 600 A2/RM X X Deep Well Source Area Corrective Measures Evaluation and plume stability Sanitary Landfill C 40 TEAD 03 24 C40 HY 279 Groundwater 279 600 A2/RM X X Source Area Corrective Measures Evaluation and plume stability Building 679 C 41 TEAD 03 24 C41 HY 366 Groundwater 366 600 A2/RM X X Source Area Corrective Measures Evaluation and plume stability Building 615 C 47F TEAD 03 24 C47F HY 364 Groundwater 364 600 A2/RM X X Source Area Corrective Measures Evaluation and plume stability Building 615 C 48F TEAD 03 24 C48F HY 364 Groundwater 364 600 A2/RM X X Source Area Corrective Measures Evaluation and plume stability Building 620 / C Avenue C 50F TEAD 03 24 C50F HY 345 Groundwater 345 600 A2/RM X X Source Area Corrective Measures Evaluation and plume stability Building 620 / C Avenue C 51F TEAD 03 24 C51F HY 328 Groundwater 328 600 MS/MSD A2/RM X X Source Area Corrective Measures Evaluation and plume stability Building 615 C 52 TEAD 03 24 C52 HY 442 Groundwater 442 600 A2/RM X X Deep Well Source Area, Corrective Measures Evaluation Building 679 C 54F TEAD 03 24 C54F HY 353 Groundwater 353 600 A2/RM X X Source Area, Corrective Measures Evaluation SWMU 58 Sanitary Landfill C 56 TEAD 03 24 C56 HY 290 Groundwater 290 600 A2/RM X X Source Area Corrective Measures Evaluation and plume investigation SWMU 58 Sanitary Landfill C 57 TEAD 03 24 C57 HY 298 Groundwater 298 600 A2/RM X X Source Area Corrective Measures Evaluation and plume investigation SWMU 58 C 58 TEAD 03 24 C58 HY 292 Groundwater 292 600 SA X X Source Area Corrective Measures Evaluation and plume investigation SWMU 58 Sanitary Landfill C 59 TEAD 03 24 C59 HY 273 Groundwater 273 600 A2/RM X X Source Area Corrective Measures Evaluation and plume investigation SWMU 58 Sanitary Landfill C 60 TEAD 03 24 C60 HY 303 Groundwater 304 600 A2/RM X X Source Area Corrective Measures Evaluation and plume investigation TEAD N 2024 Semi Annual Post Closure and System Start Up Remedy Groundwater Monitoring Sampling and Analysis Plan Page 1 of 3 Site Well ID Sample ID Matrix Sample Depth1 (feet bgs) Hydrasleeve Size (mL) QC Samples Sampling Event Type VOCs Short List / SW8260C VOCs Long List / SW8260C Field Parameters3 Sampling Objective Notes TEAD N 2024 Semi Annual Post Closure and System Start Up Remedy Groundwater Monitoring Sampling and Analysis Plan SWMU 58 Sanitary Landfill C 61 TEAD 03 24 C61 HY 307 Groundwater 307 600 A2/RM X X Source Area Corrective Measures Evaluation and plume investigation SWMU 58 C 62 TEAD 03 24 C62 HY 306 Groundwater 306 600 SA X X Source Area Corrective Measures Evaluation and plume investigation SWMU 58 C 63 TEAD 03 24 C63 HY 301 Groundwater 301 600 SA X X Source Area Corrective Measures Evaluation and plume investigation SWMU 58 C 64 TEAD 03 24 C64 HY 307 Groundwater 307 600 SA X X Source Area Corrective Measures Evaluation and plume investigation SWMU 58 C 65 TEAD 03 24 C65 HY 311 Groundwater 311 600 SA X X Source Area Corrective Measures Evaluation and plume investigation SWMU 58 Sanitary Landfill C 66 TEAD 03 24 C66 HY 310 Groundwater 310 600 FD A2/RM X X Source Area Corrective Measures Evaluation and plume investigation FD ID= TEAD 03 24 S C66 HY 320 SWMU 58 C 67 TEAD 03 24 C67 HY 320 Groundwater 320 600 SA X X Source Area Corrective Measures Evaluation and plume investigation SWMU 58 Sanitary Landfill C 68 TEAD 03 24 C68 HY 289 Groundwater 289 600 A2/RM X X Source Area Corrective Measures Evaluation and plume investigation SWMU 58 D 02 TEAD 03 24 D02 HY 365 Groundwater 365 600 SA X X Evaluation of the 5 ppb boundary SWMU 58 D 03 TEAD 03 24 D03 HY 215 Groundwater 215 600 SA X X Evaluation of the 5 ppb boundary SWMU 58 D 06 TEAD 03 24 D06 HY 290 Groundwater 290 600 SA X X Evaluation of the 5 ppb boundary SWMU 58 D 07 TEAD 03 24 D07 HY 205 Groundwater 205 600 SA X X Evaluation of the 5 ppb boundary SWMU 58 D 09 TEAD 03 24 D09 HY 138 Groundwater 138 600 SA X X Evaluation of the 5 ppb boundary SWMU 58 D 10 TEAD 03 24 D10 HY 196 Groundwater 196 600 SA X X Evaluation of the 5 ppb boundary SWMU 58 D 11 TEAD 03 24 D11 HY 130 Groundwater 130 600 SA X X Sentinel Well SWMU 58 D 12 TEAD 03 24 D12 HY 355 Groundwater 355 600 FD SA X X Sentinel Well FD ID= TEAD 03 24 S D12 HY 365 SWMU 58 D 13 TEAD 03 24 D13 HY 372 Groundwater 372 600 MS/MSD SA X X Sentinel Well SWMU 58 D 16 TEAD 03 24 D16 HY 242 Groundwater 242 600 SA X X Sentinel Well SWMU 58 D 17 TEAD 03 24 D17 HY 139 Groundwater 139 600 SA X X Evaluation of the 5 ppb boundary SWMU 58 D 18 TEAD 03 24 D18 HY 180 Groundwater 180 600 SA X X Evaluation of the 5 ppb boundary SWMU 58 D 19 TEAD 03 24 D19 HY 158 Groundwater 158 600 SA X X Evaluation of the 5 ppb boundary SWMU 58 D 20 TEAD 03 24 D20 HY 78 Groundwater 78 600 SA X X Sentinel Well SWMU 58 D 21 TEAD 03 24 D21 HY 110 Groundwater 110 600 SA X X Sentinel Well SWMU 58 D 22 TEAD 03 24 D22 HY 87 Groundwater 87 600 SA X X Sentinel Well SWMU 58 D 23 TEAD 03 24 D24 HY 202 Groundwater 202 600 SA X X Deep Sentinel Well Page 2 of 3 Site Well ID Sample ID Matrix Sample Depth1 (feet bgs) Hydrasleeve Size (mL) QC Samples Sampling Event Type VOCs Short List / SW8260C VOCs Long List / SW8260C Field Parameters3 Sampling Objective Notes TEAD N 2024 Semi Annual Post Closure and System Start Up Remedy Groundwater Monitoring Sampling and Analysis Plan SWMU 58 D 24 TEAD 03 24 D24 HY 368 Groundwater 368 600 SA X X Deep Sentinel Well SWMU 58 D 25 TEAD 03 24 D25 HY 188 Groundwater 188 600 SA X X Deep Sentinel Well SWMU 58 M 02 TEAD 03 24 M02 HY 245 Groundwater 235 600 SA X X Evaluation of MNA potential of plume SWMU 58 M 03 TEAD 03 24 M03 HY 245 Groundwater 235 600 SA X X Evaluation of MNA potential of plume SWMU 58 M 04 TEAD 03 24 M03 HY 255 Groundwater 255 600 FD SA X X Evaluation of MNA potential of plume FD ID= TEAD 03 24 S M03 HY 265 SWMU 58 M 05 TEAD 03 24 M05 HY 246 Groundwater 246 600 SA X X Evaluation of MNA potential of plume Sanitary Landfill N 120 88 TEAD 03 24 N12088 HY 310 Groundwater 310 600 FD A2/RM X X Source Area Corrective Measures Evaluation and plume stability FD ID= TEAD 03 24 S N12088 HY 320 Sanitary Landfill N 150 97 TEAD 03 24 N15097 HY 279 Groundwater 279 600 A2/RM X X Well needed for stability evaluation Notes: 3 Field parametersinclude: pH, temperature, dissolved oxygen, specific conductance, and oxidation reduction potential. FD FieldDuplicate HS HydraSleeve MS/MSD Matrix Spike/Matrix Spike Duplicate QC Quality Control RM Remedy Monitoring sampled 3 times per year SA Semi annually, sampled twice per year VOC Volatile Organic Compound A Annual, sampled one time per year 1 Depth at which the top of the HydraSleeve will be set. Sample depth is the center of the screened interval aslisted in Table 2 of Attachment 1 Post Closure Monitoring, Inspection and Maintenance Plan for SWMUs of the Post Closure Permit (TEAD 2011). If the top of the water column is below the top of the screenedinterval, the HydraSleeve will be set at the center of the water column within the screened interval. 2Well is also sampled for remedy monitoring purposes. Post closure groundwater monitoring and remedy monitoring sampling will be combined when possible. Samples will be analyzed for the long list of VOC analytes during combined events. Page 3 of 3 Analyte CAS Number Analyte CAS Number CTC 56-23-5 Benzene 71-43-2 Chloroform 67-66-3 Bromodichloromethane 75-27-4 1,1-Dichloroethane 75-34-3 Bromoform 75-25-2 1,2-Dichloroethane 107-06-2 Bromomethane 74-83-9 1,1-Dichloroethene 75-35-4 CTC 56-23-5 1,2-Dichloroethene (total) 540-59-0 Chlorobenzene 108-90-7 cis-1,2-Dichloroethene 156-59-2 Chloroethane 75-00-3 trans-1,2-Dichloroethene 156-60-5 Chloroform 67-66-3 Methylene chloride 75-09-2 Chloromethane 74-87-3 PCE 127-18-4 Dibromochloromethane 124-48-1 1,1,1-Trichloroethane 71-55-6 1,2-Dichlorobenzene 95-50-1 1,1,2-Trichloroethane 79-00-5 1,3-Dichlorobenzene 541-73-1 TCE 79-01-6 1,4-Dichlorobenzene 106-46-7 Dichlorodifluoromethane (Freon 12) 75-71-8 1,1-Dichloroethane 75-34-3 1,2-Dichloroethane 107-06-2 1,1-Dichloroethene 75-35-4 1,2-Dichloroethene (total) 540-59-0 cis-1,2-Dichloroethene 156-59-2 trans-1,2-Dichloroethene 156-60-5 1,2-Dichloropropane 78-87-5 trans-1,3-Dichloropropene 10061-02-6 cis-1,3-Dichloropropene 10061-01-5 Ethyl benzene 100-41-4 Methylene chloride 75-09-2 1,1,2,2-Tetrachloroethane 79-34-5 Tetrachloroethene 127-18-4 Toluene 108-88-3 1,1,1-Trichloroethane 71-55-6 1,1,2-Trichloroethane 79-00-5 Trichlorofluoromethane (Freon 11) 75-69-4 TCE 79-01-6 Vinyl Chloride 75-01-4 Xylenes (total) 1330-20-7 Short List VOC Analytes Long List VOC Analytes Page 6 of 13 Well/Piezometer ID Measuring Point Elevation (feet amsl) Screen Interval (feet bgs) A 02A 4758.00 278 298 A 03 4704.81 222 232 A 04 4720.04 236 246 A 05 4690.38 214 224 A 07A 4671.00 302 322 B 01 4680.26 288 298 B 02 4815.65 335 345 B 03 4721.11 268 270 B 04 4645.88 170 180 B 05 4692.02 420 430 B 06 4587.63 285 295 B 07 4607.50 280 290 B 08 4605.34 222 232 B 09 4654.97 370 380 B 10 4681.41 284 294 B 11 4589.22 274 284 B 12 4569.29 256 266 B 13 4566.87 444 454 B 14A 4539.23 260 280 B 15 4533.09 286 296 B 16 4534.79 285 295 B 17 4494.59 440 450 B 18 4504.11 210 220 B 19 4484.65 256 266 B 20 4644.71 396 406 B 21 4682.13 244 254 B 22 4694.62 364 374 B 23 4623.22 269 279 B 24 4681.85 378 388 B 25 4478.71 560 570 B 26 4779.53 314 324 B 27 4706.19 256 266 B 28 4608.33 380 390 B 29 4542.07 468 478 B 30 4535.69 225 235 B 31 4514.28 422 432 B 32 4502.61 225 235 B 33 4480.32 377 387 TEAD N 2024 Semi Annual Post Closure Groundwater Elevation Monitoring List Page 1 of 8 Well/Piezometer ID Measuring Point Elevation (feet amsl) Screen Interval (feet bgs) TEAD N 2024 Semi Annual Post Closure Groundwater Elevation Monitoring List B 34 4477.72 224 234 B 35 4469.45 212 222 B 36 4623.90 229 239 B 37 4444.91 192 202 B 38 4445.21 480 490 B 39 4460.00 300 310 B 40 4461.60 174 184 B 41 4478.22 176 186 B 42 4423.29 190 200 B 43 4423.90 484 494 B 44 4434.73 163 173 B 45 4434.89 488 498 B 46 4418.08 208 218 B 47 4414.44 198 208 B 48 4414.32 472 482 B 49 4434.95 260 270 B 50 4463.07 240 250 B 51 4462.56 260 270 B 52 4479.04 260 270 B 53 4495.74 254 264 B 54 4788.64 353 362 B 55 4684.20 648 658 B 56 4666.27 656 666 B 57 4599.80 505 515 B 58 4586.47 422 432 B 59 4533.75 690 700 B 60 4509.75 268 278 B 61 4518.34 448 458 B 62 4521.89 270 280 C 01 4471.15 280 290 C 02 4445.09 262 272 C 03 4428.10 258 268 C 04 4413.07 235 245 C 05 4441.91 242 252 C 06 4474.87 274 284 C 07 4513.90 304 314 C 08 4532.04 335 345 C 09 4658.11 348 368 Page 2 of 8 Well/Piezometer ID Measuring Point Elevation (feet amsl) Screen Interval (feet bgs) TEAD N 2024 Semi Annual Post Closure Groundwater Elevation Monitoring List C 10 4683.18 264 284 C 11 4618.31 280 300 C 12 4742.49 300 320 C 13 4716.47 288 308 C 14 4701.96 268 288 C 15 4791.45 329 349 C 16 4818.30 340 360 C 17 4820.69 343 363 C 18 4761.12 318 338 C 19 4817.63 353 363 C 20 4809.84 360 380 C 21 4827.53 358 378 C 22 4825.30 366 386 C 23 4849.19 370 390 C 24 4819.73 362 388 C 25 4682.02 353 373 C 26 4824.74 358 378 C 27 4871.49 409 429 C 30 4749.84 281 296 C 31 4814.41 440 450 C 32 4857.73 384 404 C 33 4822.63 353 373 C 34 4802.49 339 359 C 35 4784.64 310 330 C 36 4779.36 270 285 C 37 4784.19 427 447 C 38 4741.61 390 510 C 39 4820.78 440 460 C 40 4745.61 264 294 C 41 4804.70 356 376 C 42F 4785.10 340 360 C 43F 4754.87 319 339 C 44 4722.81 280 300 C 45 4689.99 249 269 C 46 4689.57 319 349 C 47F 4824.53 349 379 C 48F 4823.67 349 379 C 49 4710.02 260 280 Page 3 of 8 Well/Piezometer ID Measuring Point Elevation (feet amsl) Screen Interval (feet bgs) TEAD N 2024 Semi Annual Post Closure Groundwater Elevation Monitoring List C 50F 4796.10 330 360 C 51F 4792.05 313 343 C 52 4818.46 427 457 C 53F 4786.11 307 337 C 54F 4819.08 341.5 366.5 C 55 4690.38 470 495 C 56 4754.92 277 302 C 57 4763.80 285 310 C 58 4760.53 280 305 C 59 4740.95 261 286 C 60 4772.07 291.5 316.5 C 61 4771.74 294 319 C 62 4775.92 293 318 C 63 4767.00 289 314 C 64 4773.92 294 319 C 65 4777.58 298 323 C 66 4776.16 297 322 C 67 4785.55 307 332 C 68 4756.14 276 301 D 1 4636.86 265 285 D 2 4726.34 355 375 D 3 4546.08 205 225 D 4 4635.35 275 295 D 5 4556.67 195 215 D 6 4648.47 280 300 D 7 4556.54 195 215 D 8 4500.06 155 175 D 9 4449.62 128 148 D 10 4477.52 186 206 D 11 4422.01 117 142 D 12 4800.56 345 365 D 13 4717.40 362 382 D 14 4592.80 255 275 D 15 4494.12 180 200 D 16 4580.11 232 251 D 17 4476.25 129 149 D 18 4476.07 155 205 D 19 4497.75 148 168 Page 4 of 8 Well/Piezometer ID Measuring Point Elevation (feet amsl) Screen Interval (feet bgs) TEAD N 2024 Semi Annual Post Closure Groundwater Elevation Monitoring List D 20 4398.57 68.5 88.5 D 21 4460.83 97 122 D 22 4392.72 72 102 D 23 4398.35 192.65 212.65 D 24 4555.40 357.66 377.66 D 25 4387.74 178.35 198.35 M 01 4372.40 135 155 M 02 4429.28 225 245 M 03 4424.74 225 245 M 04 4590.95 245 265 M 05 4520.42 236 256 MW 01 5033.40 718 788 N 03A 4724.63 298 337 N 03H 4714.30 223 263 N 08B 4474.69 182 280 N 111 88 4783.20 317 337 N 112 88 4799.32 310 330 N 114 88 4795.81 315 334 N 115 88 4749.92 276 295 N 116 88 4754.21 265 285 N 117 88 4702.48 220 235 N 118 88 4722.16 240 260 N 119 88 4749.37 266 275 N 120 88 4777.66 300 320 N 127 88 4702.26 222 242 N 128 88 4701.92 235 254 N 129 88 4702.41 223 243 N 130 88 4704.12 225 244 N 131 90 4690.68 214 234 N 132 90 4690.54 220 240 N 133 90 4714.76 246 266 N 134 90 4655.84 184 204 N 135 90 4705.48 227 247 N 136 90 4713.02 233 253 N 142 93 4727.40 355 375 N 143 93 4796.30 325 345 N 144 93 4770.50 291 311 N 145 93 4688.20 295 315 Page 5 of 8 Well/Piezometer ID Measuring Point Elevation (feet amsl) Screen Interval (feet bgs) TEAD N 2024 Semi Annual Post Closure Groundwater Elevation Monitoring List N 146 97 4726.28 251 271 N 147 97 4719.29 244 264 N 148 97 4700.24 225 245 N 150 97 4745.54 269 289 P 01D 4679.86 485 495 P 01S 4680.20 200 210 P 03D 4644.99 444 454 P 03S 4644.97 190 200 P 04D 4693.61 356 366 P 04S 4693.73 220 230 P 05D 4748.00 305 315 P 05S 4748.25 264 274 P 06D 4814.14 440 450 P 06S 4812.96 358 368 P 07D 4720.99 414 424 P 07S 4720.95 290 300 P 08D 4687.30 358 368 P 08S 4687.42 72 82 P 09D 4679.35 414 424 P 09S 4679.47 289 299 P 10D 4680.85 322 332 P 10S 4681.26 222 232 P 11D 4587.70 358 368 P 11S 4587.64 234 244 P 12D 4603.80 230 240 P 12S 4603.91 230 240 P 13D 4598.77 580 590 P 13S 4598.74 280 290 P 14D 4643.75 348 358 P 14S 4644.01 262 272 P 15D 4539.24 498 508 P 15S 4539.03 224 234 P 16D 4558.59 626 636 P 16S 4558.59 264 274 P 17D 4537.47 556 566 P 17S 4537.61 218 228 P 18D 4672.37 376 386 P 18S 4672.33 300 310 Page 6 of 8 Well/Piezometer ID Measuring Point Elevation (feet amsl) Screen Interval (feet bgs) TEAD N 2024 Semi Annual Post Closure Groundwater Elevation Monitoring List P 19D 4504.88 544 554 P 19S 4504.63 213 223 P 20D 4493.15 590 600 P 20S 4492.94 180 190 P 21D 4552.18 460 470 P 21S 4552.20 238 248 P 22D 4551.92 370 380 P 22S 4552.02 370 380 P 23D 4551.96 460 470 P 23S 4551.96 320 330 P 24D 4550.44 460 470 P 24S 4550.49 233 243 P 25D 4640.86 460 470 P 25S 4640.82 214 223 P 26D 4585.80 457 467 P 26S 4585.03 300 310 P 27D 4600.07 665 675 P 27S 4600.09 230 235 P 28D 4454.45 480 490 P 28S 4454.26 170 180 P 29 4655.48 232 242 P 30 4600.59 230 235 P 31 4600.59 225 235 P 32 4445.91 255 265 P 33 4429.20 250 260 P 34 4431.53 245 255 P 35 4417.97 239 249 P 36 4490.08 295 305 P 37 4430.65 250 260 P 38 4441.14 265 275 P 39 4446.79 257 267 P 40 4605.36 276 296 P 41 4605.21 466 486 P 42 4579.86 280 300 P 43 4580.07 550 570 P 44 4619.07 480 500 T 2 4690.40 234 264 T 3 4683.30 239 269 Page 7 of 8 Well/Piezometer ID Measuring Point Elevation (feet amsl) Screen Interval (feet bgs) TEAD N 2024 Semi Annual Post Closure Groundwater Elevation Monitoring List T 4 4620.24 165 195 T 5 4612.14 300 330 T 6 4597.92 241 271 T 7 4793.97 306 337 Notes: Well has been abadoned Page 8 of 8