ML22285A109
| ML22285A109 | |
| Person / Time | |
|---|---|
| Site: | 07000925 |
| Issue date: | 10/08/2022 |
| From: | Burns & McDonnell, Environmental Properties Management |
| To: | Office of Nuclear Material Safety and Safeguards |
| Shared Package | |
| ML22286A041 | List: |
| References | |
| Download: ML22285A109 (134) | |
Text
Table 1 Revision 0 Preparer: J. Lux; Date 8/25/21 Reviewer: E. Dulle; Date: 10/8/22 Burial Area #1 Final Status Survey Soil Data Net Total Net Total Net Total Net Total Sample Sample Sample Sample Uranium Uranium Uranium Uranium ID ID ID ID (pCi/g) (pCi/g) (pCi/g) (pCi/g)
FA-0001 2 FA-0032 6 FA-0063 0 FA-0094 2 FA-0002 4 FA-0033 3 FA-0064 0 FA-0095 4 FA-0003 8 FA-0034 3 FA-0065 4 FA-0096 1 FA-0004 4 FA-0035 4 FA-0066 3 FA-0097 1 FA-0005 3 FA-0036 2 FA-0067 5 FA-0098 6 FA-0006 2 FA-0037 4 FA-0068 1 FA-0099 4 FA-0007 5 FA-0038 3 FA-0069 6 FA-0100 3 FA-0008 5 FA-0039 9 FA-0070 4 FA-0101 1 FA-0009 5 FA-0040 4 FA-0071 3 FA-0102 4 FA-0010 4 FA-0041 4 FA-0072 2 FA-0103 5 FA-0011 5 FA-0042 3 FA-0073 4 FA-0104 3 FA-0012 4 FA-0043 4 FA-0074 3 FA-0105 2 FA-0013 6 FA-0044 1 FA-0075 4 FA-0106 5 FA-0014 2 FA-0045 3 FA-0076 3 FA-0107 0 FA-0015 5 FA-0046 4 FA-0077 1 FA-0108 3 FA-0016 1 FA-0047 3 FA-0078 2 FA-0109 6 FA-0017 1 FA-0048 2 FA-0079 2 FA-0110 4 FA-0018 5 FA-0049 4 FA-0080 3 FA-0111 0 FA-0019 2 FA-0050 4 FA-0081 1 FA-0112 5 FA-0020 4 FA-0051 6 FA-0082 3 FA-0113 5 FA-0021 2 FA-0052 6 FA-0083 4 FA-0114 5 FA-0022 6 FA-0053 6 FA-0084 0 FA-0115 0 FA-0023 5 FA-0054 2 FA-0085 0 FA-0116 4 FA-0024 7 FA-0055 2 FA-0086 5 FA-0117 2 FA-0025 4 FA-0056 5 FA-0087 6 FA-0118 0 FA-0026 2 FA-0057 1 FA-0088 0 FA-0119 6 FA-0027 3 FA-0058 4 FA-0089 1 FA-0120 2 FA-0028 2 FA-0059 5 FA-0090 1 FA-0121 3 FA-0029 2 FA-0060 3 FA-0091 1 FA-0122 3 FA-0030 2 FA-0061 2 FA-0092 4 FA-0123 7 FA-0031 6 FA-0062 2 FA-0093 4 FA-0124 1 Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 1 of 5
Table 1 Revision 0 Preparer: J. Lux; Date 8/25/21 Reviewer: E. Dulle; Date: 10/8/22 Burial Area #1 Final Status Survey Soil Data Net Total Net Total Net Total Net Total Sample Sample Sample Sample Uranium Uranium Uranium Uranium ID ID ID ID (pCi/g) (pCi/g) (pCi/g) (pCi/g)
FA-0125 1 FA-0156 2 FA-0187 6 FA-0218 7 FA-0126 2 FA-0157 2 FA-0188 4 FA-0219 2 FA-0127 4 FA-0158 4 FA-0189 0 FA-0220 6 FA-0128 3 FA-0159 4 FA-0190 3 FA-0221 2 FA-0129 8 FA-0160 5 FA-0191 9 FA-0222 1 FA-0130 3 FA-0161 2 FA-0192 6 FA-0223 0 FA-0131 5 FA-0162 3 FA-0193 7 FA-0224 3 FA-0132 2 FA-0163 8 FA-0194 8 FA-0225 2 FA-0133 3 FA-0164 4 FA-0195 1 FA-0226 5 FA-0134 3 FA-0165 5 FA-0196 4 FA-0227 2 FA-0135 2 FA-0166 4 FA-0197 6 FA-0228 3 FA-0136 2 FA-0167 3 FA-0198 5 FA-0229 4 FA-0137 6 FA-0168 3 FA-0199 4 FA-0230 6 FA-0138 4 FA-0169 1 FA-0200 2 FA-0231 6 FA-0139 1 FA-0170 4 FA-0201 6 FA-0232 5 FA-0140 3 FA-0171 7 FA-0202 4 FA-0233 2 FA-0141 5 FA-0172 6 FA-0203 8 FA-0234 3 FA-0142 3 FA-0173 4 FA-0204 8 FA-0235 2 FA-0143 9 FA-0174 5 FA-0205 6 FA-0236 9 FA-0144 6 FA-0175 3 FA-0206 1 FA-0237 2 FA-0145 6 FA-0176 3 FA-0207 4 FA-0238 4 FA-0146 7 FA-0177 4 FA-0208 2 FA-0239 5 FA-0147 4 FA-0178 1 FA-0209 6 FA-0240 8 FA-0148 0 FA-0179 3 FA-0210 1 FA-0241 1 FA-0149 3 FA-0180 5 FA-0211 6 FA-0242 4 FA-0150 6 FA-0181 9 FA-0212 2 FA-0243 5 FA-0151 5 FA-0182 7 FA-0213 4 FA-0244 1 FA-0152 2 FA-0183 5 FA-0214 3 FA-0245 5 FA-0153 4 FA-0184 2 FA-0215 8 FA-0246 7 FA-0154 2 FA-0185 4 FA-0216 5 FA-0247 4 FA-0155 0 FA-0186 3 FA-0217 6 FA-0248 7 Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 2 of 5
Table 1 Revision 0 Preparer: J. Lux; Date 8/25/21 Reviewer: E. Dulle; Date: 10/8/22 Burial Area #1 Final Status Survey Soil Data Net Total Net Total Net Total Net Total Sample Sample Sample Sample Uranium Uranium Uranium Uranium ID ID ID ID (pCi/g) (pCi/g) (pCi/g) (pCi/g)
FA-0249 2 FA-0280 1 FA-0311 2 FA-0342 3 FA-0250 5 FA-0281 1 FA-0312 3 FA-0343 3 FA-0251 5 FA-0282 8 FA-0313 4 FA-0344 1 FA-0252 6 FA-0283 5 FA-0314 6 FA-0345 0 FA-0253 3 FA-0284 1 FA-0315 4 FA-0346 0 FA-0254 7 FA-0285 1 FA-0316 1 FA-0347 0 FA-0255 3 FA-0286 1 FA-0317 3 FA-0348 1 FA-0256 2 FA-0287 5 FA-0318 2 FA-0349 3 FA-0257 0 FA-0288 0 FA-0319 8 FA-0350 1 FA-0258 2 FA-0289 2 FA-0320 1 FA-0351 6 FA-0259 4 FA-0290 3 FA-0321 4 FA-0352 2 FA-0260 2 FA-0291 6 FA-0322 3 FA-0353 5 FA-0261 2 FA-0292 4 FA-0323 5 FA-0354 2 FA-0262 3 FA-0293 3 FA-0324 4 FA-0355 2 FA-0263 2 FA-0294 2 FA-0325 3 FA-0356 6 FA-0264 4 FA-0295 1 FA-0326 4 FA-0357 3 FA-0265 3 FA-0296 4 FA-0327 5 FA-0358 3 FA-0266 6 FA-0297 3 FA-0328 6 FA-0359 0 FA-0267 4 FA-0298 1 FA-0329 4 FA-0360 3 FA-0268 2 FA-0299 3 FA-0330 3 FA-0361 1 FA-0269 2 FA-0300 0 FA-0331 0 FA-0362 2 FA-0270 4 FA-0301 7 FA-0332 3 FA-0363 0 FA-0271 6 FA-0302 3 FA-0333 3 FA-0364 2 FA-0272 1 FA-0303 4 FA-0334 3 FA-0365 5 FA-0273 5 FA-0304 0 FA-0335 1 FA-0366 3 FA-0274 8 FA-0305 2 FA-0336 5 FA-0367 0 FA-0275 7 FA-0306 3 FA-0337 0 FA-0368 0 FA-0276 2 FA-0307 4 FA-0338 4 FA-0369 6 FA-0277 2 FA-0308 3 FA-0339 3 FA-0370 3 FA-0278 4 FA-0309 5 FA-0340 6 FA-0371 6 FA-0279 3 FA-0310 3 FA-0341 2 FA-0372 3 Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 3 of 5
Table 1 Revision 0 Preparer: J. Lux; Date 8/25/21 Reviewer: E. Dulle; Date: 10/8/22 Burial Area #1 Final Status Survey Soil Data Net Total Net Total Net Total Net Total Sample Sample Sample Sample Uranium Uranium Uranium Uranium ID ID ID ID (pCi/g) (pCi/g) (pCi/g) (pCi/g)
FA-0373 2 FA-0404 5 FA-0435 6 FA-0466 5 FA-0374 2 FA-0405 1 FA-0436 6 FA-0467 5 FA-0375 1 FA-0406 1 FA-0437 4 FA-0468 3 FA-0376 1 FA-0407 5 FA-0438 4 FA-0469 7 FA-0377 -3 FA-0408 3 FA-0439 4 FA-0470 6 FA-0378 5 FA-0409 2 FA-0440 2 FA-0471 9 FA-0379 2 FA-0410 7 FA-0441 1 FA-0472 2 FA-0380 6 FA-0411 7 FA-0442 3 FA-0473 2 FA-0381 2 FA-0412 4 FA-0443 3 FA-0474 1 FA-0382 6 FA-0413 1 FA-0444 3 FA-0475 5 FA-0383 10 FA-0414 0 FA-0445 3 FA-0476 14 FA-0384 7 FA-0415 1 FA-0446 5 FA-0477 2 FA-0385 1 FA-0416 1 FA-0447 2 FA-0478 5 FA-0386 3 FA-0417 2 FA-0448 6 FA-0479 2 FA-0387 5 FA-0418 0 FA-0449 6 FA-0480 3 FA-0388 0 FA-0419 1 FA-0450 2 FA-0481 1 FA-0389 0 FA-0420 3 FA-0451 1 FA-0482 4 FA-0390 1 FA-0421 1 FA-0452 9 FA-0483 2 FA-0391 3 FA-0422 3 FA-0453 3 FA-0484 3 FA-0392 3 FA-0423 3 FA-0454 5 FA-0485 4 FA-0393 5 FA-0424 7 FA-0455 6 FA-0486 4 FA-0394 4 FA-0425 2 FA-0456 2 FA-0487 3 FA-0395 2 FA-0426 1 FA-0457 2 FA-0488 6 FA-0396 7 FA-0427 0 FA-0458 0 FA-0489 2 FA-0397 9 FA-0428 3 FA-0459 1 FA-0490 4 FA-0398 5 FA-0429 2 FA-0460 4 FA-0491 5 FA-0399 1 FA-0430 2 FA-0461 2 FA-0492 6 FA-0400 8 FA-0431 2 FA-0462 3 FA-0493 7 FA-0401 4 FA-0432 1 FA-0463 5 FA-0494 4 FA-0402 0 FA-0433 1 FA-0464 3 FA-0495 7 FA-0403 -1 FA-0434 8 FA-0465 4 FA-0496 3 Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 4 of 5
Table 1 Revision 0 Preparer: J. Lux; Date 8/25/21 Reviewer: E. Dulle; Date: 10/8/22 Burial Area #1 Final Status Survey Soil Data Net Total Net Total Net Total Net Total Sample Sample Sample Sample Uranium Uranium Uranium Uranium ID ID ID ID (pCi/g) (pCi/g) (pCi/g) (pCi/g)
FA-0497 3 FA-0523 5 FA-0498 4 FA-0524 2 Average Net Uranium Concentration (pCi/g)
FA-0499 3 FA-0525 3 3.4 FA-0500 2 FA-0526 3 FA-0501 1 FA-0527 3 Maximum Net Uranium Concentration (pCi/g)
FA-0502 -1 FA-0528 1 14.0 FA-0503 4 FA-0529 9 FA-0504 4 FA-0530 2 FA-0505 0 FA-0531 1 FA-0506 1 FA-0532 0 FA-0507 3 FA-0533 8 Notes:
FA-0508 3 FA-0535 2 Source of data is Table 1 from FA-0509 3 FA-0536 4 Final Status Survey Report, Sub-Area F (Nextep FA-0510 3 FA-0537 5 Environmental, Inc., 2005).
FA-0511 0 FA-0538 4 Accession Number ML20043F208 FA-0512 3 FA-0539 -1 FA-0513 3 FA-0540 5 Table 1 in Final Status Survey Report, Sub-Area F FA-0514 4 FA-0541 6 did not include data for sample location FA-0534.
FA-0515 4 FA-0542 0 FA-0516 5 FA-0543 0 FA-0517 6 FA-0544 -3 pCi/g = picoCuries per gram FA-0518 2 FA-0545 1 FA-0519 7 FA-0546 2 FA-0520 4 FA-0547 3 FA-0521 1 FA-0548 3 FA-0522 2 Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 5 of 5
Table 1 Revision 0 Prepared by: J. Lux; Date: 8/26/21 Reviewed by: E. Dulle; Date: 09/09/22 Burial Area #2 1996 Final Status Survey Soil Data Easting Northing Total Uranium (pCi/g) at Depth Interval (meters based on (meters based on site grid) site grid) 0 - 6" 6" - 1' 1' - 2' 2' - 3' 3' - 4' 4' - 5' 60 255 18 60 260 18 60 265 12 60 270 8 14 14 8 5.5 13.5 60 275 17 60 280 12 60 285 12 60 290 8 60 295 16 60 300 17 60 305 13 60 310 24 60 315 12 60 320 19 65 255 4 65 260 7 65 265 7 65 270 7 65 275 8 65 280 4 65 285 26 65 290 7 8 8 65 295 10 65 300 23 65 305 13 65 310 10 65 315 10 65 320 10 70 255 10 70 260 8 70 265 6 70 270 2 70 275 10 70 280 7 70 285 5 Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 1 of 3
Table 1 Revision 0 Prepared by: J. Lux; Date: 8/26/21 Reviewed by: E. Dulle; Date: 09/09/22 Burial Area #2 1996 Final Status Survey Soil Data Easting Northing Total Uranium (pCi/g) at Depth Interval (meters based on (meters based on site grid) site grid) 0 - 6" 6" - 1' 1' - 2' 2' - 3' 3' - 4' 4' - 5' 70 290 22 70 295 21 70 300 47 70 305 27 70 310 18 70 315 56 70 320 20 75 255 14 75 260 8 75 265 6 75 270 4 75 275 7 75 280 6 75 285 11 75 290 10 7 7 7 5 75 295 14 75 300 33 75 305 26 75 310 4 75 315 7 75 320 6 80 255 16 80 260 17 80 265 16 80 270 10 80 275 12 80 280 24 80 285 20 80 290 13 80 295 14 80 300 7 80 305 12 10 14 10 11 80 310 16 80 315 4 80 320 8 Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 2 of 3
Table 1 Revision 0 Prepared by: J. Lux; Date: 8/26/21 Reviewed by: E. Dulle; Date: 09/09/22 Burial Area #2 1996 Final Status Survey Soil Data Easting Northing Total Uranium (pCi/g) at Depth Interval (meters based on (meters based on site grid) site grid) 0 - 6" 6" - 1' 1' - 2' 2' - 3' 3' - 4' 4' - 5' 85 255 9 85 260 7 85 265 9 85 270 5 85 275 6 85 280 9 85 285 14 85 290 7 85 295 11 85 300 11 85 305 5 85 310 7 85 315 10 85 320 23 90 255 4 90 260 9 90 265 6 90 270 10 90 275 100 90 280 6 90 285 8 90 290 21 90 295 13 90 300 9 90 305 8 7 4 3 4 6 90 310 20 90 315 10 90 320 9 Notes:
- pCi/g = picoCuries per gram (data is total uranium, including background)
- Source of Data is Appendix 2 from Final Status Survey Report for Sub-Area L (Subsurface)
- (Cimarron Corporation, 1996)
- Accession Numbers ML20202A535, ML20202A557, and ML20202A558
- Number of Samples = 118
- Average Uranium Concentration = 12.6 pCi/g
- With 4.0 pCi/g background subtracted, Net Mean Uranium Concentration = 8.6 pCi/g Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 3 of 3
Table 1 Revision 0 Prepared by: J. Lux; Date: 8/25/21 Burial Area #3 Reviewed by: E. Dulle ; Date: 09/09/22 Final Status Survey Soil Data Easting Northing Total Uranium (pCi/g) at Depth Interval (meters based on (meters based on 0 - 6" 6" - 1' 1' - 2' 2' - 3' 3' -4' 4' - 5' 5' - 6' site grid) site grid) 310 295 8 7 6 7 9 7 11 310 290 9 4 8 5 5 4 7 310 285 12 6 7 12 5 4 310 280 7 27 7 7 8 7 7 310 275 6 8 6 9 7 7 4 310 270 6 7 11 7 6 7 3 310 265 7 8 6 8 6 17 12 310 260 9 5 6 5 8 7 4 310 255 6 9 7 9 8 310 250 6 6 8 3 9 5 310 245 9 6 4 6 5 6 310 240 4 7 10 6 5 310 235 11 9 12 5 315 295 7 7 9 7 4 6 6 315 290 8 4 7 6 7 5 5 315 285 6 5 9 21 11 315 280 11 13 12 7 8 6 9 315 275 7 6 12 14 10 10 11 315 270 10 8 14 9 12 7 315 265 13 35 11 7 7 10 7 315 260 8 8 10 12 5 12 11 315 255 7 10 10 9 11 11 8 315 250 15 18 19 6 10 7 315 245 16 12 6 6 6 5 315 240 37 38 18 11 8 315 235 18 10 27 15 9 320 295 5 6 7 10 6 5 5 320 290 9 7 7 10 8 7 5 320 285 10 10 8 7 5 6 13 320 280 11 10 7 8 8 7 6 320 275 8 8 15 11 5 8 8 320 270 6 6 16 11 7 5 5 320 265 9 5 47 9 13 11 8 320 260 13 7 9 6 15 14 11 320 255 8 21 15 9 4 8 12 320 250 9 9 10 14 7 11 320 245 13 8 5 7 6 320 240 5 10 11 10 10 8 6 320 235 8 7 7 7 7 325 295 6 11 6 8 8 9 8 325 290 7 7 4 5 6 5 325 285 5 6 6 6 9 7 6 Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 1 of 2
Table 1 Revision 0 Prepared by: J. Lux; Date: 8/25/21 Burial Area #3 Reviewed by: E. Dulle ; Date: 09/09/22 Final Status Survey Soil Data Easting Northing Total Uranium (pCi/g) at Depth Interval (meters based on (meters based on 0 - 6" 6" - 1' 1' - 2' 2' - 3' 3' -4' 4' - 5' 5' - 6' site grid) site grid) 325 280 9 11 8 8 7 4 325 275 8 7 7 6 7 5 7 325 270 8 4 5 6 4 9 7 325 265 10 15 17 11 21 14 15 325 260 10 6 7 10 11 12 7 325 255 13 7 9 10 8 8 10 325 250 8 8 7 14 7 13 7 325 245 14 10 11 7 7 8 10 325 240 7 6 8 6 11 6 7 325 235 5 5 5 7 5 6 330 295 6 8 13 9 5 8 9 330 290 5 5 7 5 4 7 5 330 285 10 8 7 9 6 6 330 280 6 4 9 5 4 6 330 275 9 8 9 9 7 7 330 270 12 8 15 12 7 7 330 265 16 20 9 17 12 7 11 330 260 13 14 9 12 11 5 12 330 255 10 10 9 39 29 14 16 330 250 6 16 15 5 8 8 12 330 245 18 20 27 24 26 14 330 240 26 21 11 6 17 8 8 330 235 10 7 8 4 7 8 335 295 16 4 10 7 5 5 7 335 290 12 7 7 6 8 4 335 285 5 5 8 7 6 4 335 280 7 10 7 6 5 6 335 275 6 7 8 6 8 5 335 270 34 21 24 15 14 24 10 335 265 12 22 11 19 10 14 335 260 14 25 33 26 22 13 10 335 255 9 11 8 17 15 10 10 335 250 12 5 13 11 16 8 335 245 6 4 8 6 8 6 10 335 240 8 7 9 5 10 5 335 235 6 7 5 7 4 7 Average Uranium Concentration 10 10 11 9 9 8 8 Average BA#3 Uranium Concentration 9.4 Notes:
- Source of Data is Appendix 2 from Final Status Survey Report, Sub-Area M
- (Cimarron Corporation, 1998) Accession Number ML19154A192
- Number of Samples = 505
- With 4.0 pCi/g background subtracted, Net Mean Uranium Concentration = 5.4 pCi/g Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 2 of 2
Preparer: D. Horne; Date: 02/15/21 Table 21 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Domestic Water Wells Near the Cimarron Site (As of February 2021)
Well ID Township Range Sect. 10acre Latitude Longitude Owner 151668 16N 3 6 SWNWNW 35.8966 97.56652 C Porter 9908 16N 3 7 SWSWNW 35.879282 97.566526 Not Avail.
9909 16N 3 7 SESWNE 35.879282 97.555374 B. Williams 31196 16N 3 7 NENENW 35.884704 97.559835 Wayne Mongotmery 36001 16N 3 7 SESENE 35.879282 97.550914 VAN FREE 90185 16N 3 7 SWSWSW 35.872054 97.566525 Lancaster 109628 16N 3 7 NESENE 35.881089 97.550914 MARLA PEEK 109629 16N 3 7 NESENE 35.881089 97.550914 MARLA PEEK 180261 16N 3 7 SENWNE 35.88261 97.55473 Paul Bartholomew 9910 16N 3 8 NENWNE 35.884704 97.537427 Mr. & Mrs. Fabuion 9911 16N 3 8 SWNENE 35.882897 97.535197 Tom Stults 61569 16N 3 8 NWNENE 35.884704 97.535197 Steve Sheffield 138552 16N 3 8 NENENE 35.885083 97.533867 ROY NELSON 79203 16N 3 17 SWNENW 35.868357 97.544238 Marvin Quinn 90910 16N 3 17 SWNENW 35.868357 97.544238 Robert Hood 96351 16N 3 17 NESENE 35.867 97.533367 Brent Moroney 113999 16N 3 17 SWSESE 35.857833 97.535667 Don Tharp 124188 16N 3 17 SENESE 35.860733 97.532717 Richardson Homes 174735 16N 3 17 SESESE 35.8577 97.53419 Kirk Keller 9915 16N 3 18 SESWSE 35.857519 97.555373 Duffy Martin 9916 16N 3 18 SESENE 35.864748 97.550913 Bill Ellis 32572 16N 3 18 NWSESW 35.859326 97.562063 R C Vannostrand 38607 16N 3 18 SWNWNW 35.868362 97.566523 BRIAN SUMEARLL WELL #19 197831 16N 3 18 SESESE 35.85842 97.55166 Greg Ireton 36002 16N 3 19 SESENE 35.850308 97.550917 CHAD CHERRY 127541 16N 3 19 SENWNE 35.8544 97.55555 conrad 134152 16N 3 19 NESENE 35.852517 97.551017 michelle Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 1 of 3
Preparer: D. Horne; Date: 02/15/21 Table 21 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Domestic Water Wells Near the Cimarron Site (As of February 2021)
Well ID Township Range Sect. 10acre Latitude Longitude Owner 23135 16N 4 1 NENENW 35.898858 97.57722 Jerry Babb 31202 16N 4 1 NWNWNE 35.898858 97.57499 Jim Crowley 89969 16N 4 1 SWSWNE 35.894053 97.57499 Not Available 38802 16N 4 2 NWNWSW 35.892173 97.601725 CIMARRON APPALOOSA 100123 16N 4 2 SESESW 35.8875 97.594 Wayn Tompson 110569 16N 4 2 NESESW 35.8879 97.594167 Ed Lehr 129268 16N 4 2 NWSWSE 35.8878 97.59354 Trace OIL 180879 16N 4 2 NWNWSW 35.89285 97.60211 chris wheeler 146005 16N 4 2 NWSWSE 35.88859 97.59377 Brent Gregory 141974 16N 4 2 NWSESE 35.88935 97.58829 Summit Ranch 144812 16N 4 2 NWSWNE 35.89632 97.5927 Rick Klein 44811 16N 4 3 NWNESE 35.892164 97.606289 Veldon Zollinger Inc.
90924 16N 4 3 SENESE 35.890357 97.604059 Thad Kinney 108469 16N 4 3 SENESE 35.89 97.603 Jerry A Payne 176245 16N 4 3 NWSESE 35.88861 97.60667 2nd Hand Stare 76641 16N 4 12 SWSWSW 35.872182 97.583914 Cimarron Corp/Kerr McGee Corp 87548 16N 4 12 SWSWSW 35.872182 97.583914 Cimarron Corp/Kerr McGee Corp 150878 16N 4 12 SWSESE 35.8722 97.57151 Kenny Wood 197582 16N 4 12 NESESE 35.87391 97.56771 Terry Swinford 143552 16N 4 13 NENWSW 35.86331 97.58282 Efrain Huerta 9928 16N 4 14 SESWSW 35.857697 97.599501 Ben Ellis 83070 16N 4 24 NESWSW 35.845014 97.581737 Mark Dees Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 2 of 3
Preparer: D. Horne; Date: 02/15/21 Table 21 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Domestic Water Wells Near the Cimarron Site (As of February 2021)
Well ID Township Range Sect. 10acre Latitude Longitude Owner 146003 17N 3 30 SWNWSW 35.91746 97.56775 John Kellog 142888 17N 3 30 NWNWSW 35.91944 97.56769 J Keloog 146002 17N 3 30 SWNWSW 35.91803 97.56745 John Kellog 169762 17N 3 30 NENWSW 35.92013 97.56529 J Kelloog 137644 17N 3 30 NENWSW 35.91976 97.5645 John Kellog 137643 17N 3 30 SENWSW 35.91843 97.56444 John Kellog 45177 17N 4 25 SWSWSW 35.914116 97.585097 Ed Stanton 137647 17N 4 25 SWNWSW 35.91826 97.58573 P Mc Vicker 123592 17N 4 26 NENENE 35.92664 97.58718 Greg Williams 129452 17N 4 26 SWSWSE 35.91371 97.5933 Bob Heflin 151667 17N 4 26 NENESW 35.92005 97.59653 J Henrey 153649 17N 4 26 NESENW 35.92365 97.59699 Doug Lacey 9563 17N 4 34 NWSWSW 35.901324 97.620669 Not Avail.
9981 17N 4 35 SWNESE 35.90317 97.589429 Conveying System & Mfg 22659 17N 4 35 NESWSE 35.901363 97.59166 Jerry Corteway 109655 17N 4 36 NWSWSE 35.9005 97.575167 Jim Crowley 109656 17N 4 36 NWSWSE 35.9005 97.575167 Jim Crowley 125433 17N 4 36 SESWSE 35.899 97.57478 jim crowley Notes:
Sect. Section "Well ID" assigned by Oklahoma Water Resources Board Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 3 of 3
Preparer: D. Horne; Date: 02/15/21 Table 22 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Oil/Gas Wells Near the Cimarron Site (As of February 2021)
Operator API Number Well Name Well No. Well Type SEC TWP RNG Quarter Section Number Abandoned Wells 3508322103 22182 JECH 135 35 17N 04W CNE4NW4SW4 3508324273 23535 WIGEON 19H DRY 04 16N 03W SWSESWSW 3508320000 23358 DATIN 1637 1HM OIL 16N 3W 16 NENENWNW Active Wells 3508323995 23535 DAVIS FARMS 15 SWD 2DNC 05 16N 3W SWSESWSW 3508321337 7250 STUBBLEFIELD 1 OIL 07 16N 3W CNESW 3508323211 19961 BUGG 17 OIL 07 16N 3W NSSE 3508323822 7250 MCKAIG 1 OIL 07 16N 3W CSSWNE 3508323350 7250 STUBBLEFIELD 3 OIL 07 16N 3W CNESWSW 3508322932 19586 POPE 118 OIL 18 16N 3W NWNENE 3508323917 22501 LIBERTY 118 OIL 18 16N 3W WNESENE 3508322871 19961 BUGG 17 OIL 07 16N 3W SESESE 3508323359 21316 HARRIS 1 2DCm 13 16N 04W CNWNE 3508323778 17042 GERALD 124 GAS 24 17N 04W CS2SESE 3508323943 22501 LIBERTY 218 2DCm 18 16N 03W SWNESWNE 3508323974 23535 WOLF 129H OIL 29 17N 03W NESENWNW 3508323974 23535 WOLF 129H OIL 29 17N 03W E2SESWSW 3508323998 23535 DAVIS FARMS 25H OIL 05 16N 03W S2S2SWSW 3508323998 23535 DAVIS FARMS 25H OIL 05 16N 03W CNWNW 3508324004 23030 MCPHAIL 131H OIL 31 17N 03W SESWSESE 3508324004 23030 MCPHAIL 131H OIL 31 17N 03W NWNWNENE 3508324024 22501 DUFFY 118 GAS 18 16N 03W NWNWNESE 3508324026 24435 ROTHER 16411 1 SWD 2DNC 11 16N 04W SWSWSESW 3508324042 23030 LOVE 131H OIL 31 17N 03W NWNENWNW 3508324054 23030 TONTZ 132H OIL 32 17N 03W N2N2NENE 3508324057 24432 ROTHER 16411 2 HM OIL 11 16N 04W SWSWSESW 3508324092 24432 FRICK 16413 1 HW OIL 13 16N 04W NWNENWNW 3508324094 23030 SNIPE 130H OIL 30 17N 03W NWNWNWNW 3508324121 23030 TONTZ 22932H OIL 32 17N 03W SWSWSESW 3508324121 23030 TONTZ 22932H OIL 29 17N 03W NWSWSESW 3508324168 23535 TOUCAN 124H OIL 25 17N 04W NENENENE 3508324168 23535 TOUCAN 124H OIL 24 17N 03W NWNENENE 3508324187 23030 GREGORY 1103H OIL 10 17N 04W NENENENW 3508324187 23030 GREGORY 1103H OIL 03 17N 04W NENENENW 3508324203 23535 WIGEON 14H OIL 04 16N 03W NENWNWNW 3508324203 23535 WIGEON 14H OIL 04 16N 03W SWSESWSW 3508324208 23030 FOX 2169H OIL 09 16N 04W NENENWNW 3508324208 23030 FOX 2169H OIL 16 16N 04W NWSWNWNE Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 1 of 2
Preparer: D. Horne; Date: 02/15/21 Table 22 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Oil/Gas Wells Near the Cimarron Site (As of February 2021)
Operator API Number Well Name Well No. Well Type SEC TWP RNG Quarter Section Number 3508324229 24432 CIMARRON RIVER 16412 1HW OIL 13 16N 04W NWNENWNW 3508324229 24432 CIMARRON RIVER 16412 1HW OIL 12 16N 04W NENWNWNW 3508324263 24432 KAY ROTHER 16414 1 HW OIL 14 16N 04W NWNENWNE 3508324263 24432 KAY ROTHER 16414 1 HW OIL 12 16N 04W SESWSESE 3508324268 24432 KAY ROTHER 16414 1 HM OIL 14 16N 04W NWNENWNE 3508324268 24432 KAY ROTHER 16414 1 HM OIL 14 16N 04W SWSWSESE 3508324280 23535 DAVIS FARMS 16H OIL 05 16N 03W SESWSWSW 3508324281 23030 FOX 3169H OIL 16 16N 04W NESWNWNE 3508324294 24432 DATIN 1637 1HM OIL 07 16N 03W SESESWSW 3508324294 24432 DATIN 1637 1HM OIL 07 16N 03W NENENWNW 3508324325 23030 MOSIER 24H OIL 04 16N 04W NESENENW 3508324325 23030 MOSIER 24H OIL 04 16N 04W SWSWSWSE 3508324406 21316 HARRIS SWD 2 2DCm 13 16N 04W NESWNWNE Notes API API Well Number SEC Section TWP Township RNG Range Data was taken from Well Completion List Master located on https://oklahoma.gov/occ/divisions/oilgas/oilgasdata.
Accessed February 8, 2021.
Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 2 of 2
Preparer: D. Horne; Date: 02/15/21 Table 2 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Historical Earthquakes in Oklahoma Greater than 3.0 Magnitude (As of February 9, 2021)
Date and Time Latitude Longitude Epicenter Depth (km) Magnitude Mag. Type1 2021-02-06T10:01:27.899Z 36.292 -97.52033 6 km ESE of Covington, Oklahoma 7.28 3.36 ml 2021-02-05T17:48:45.719Z 36.289 -97.51583 5 km WNW of Lucien, Oklahoma 6.67 4.2 mwr 2021-02-05T16:17:37.100Z 36.2881667 -97.51967 6 km WNW of Lucien, Oklahoma 6.59 3.65 ml 2021-02-05T16:16:56.929Z 36.2848333 -97.5115 5 km WNW of Lucien, Oklahoma 6.66 3.52 ml 2020-12-30T11:04:44.286Z 37.708 -97.2403 3 km NE of Eastborough, Kansas 5 3.7 mwr 2020-12-23T21:28:14.519Z 36.5343333 -98.98367 10 km NNE of Quinlan, Oklahoma 6.97 3.11 ml 2020-12-19T18:52:23.610Z 37.7205 -97.2149 5 km NE of Eastborough, Kansas 5 3.4 mb_lg 2020-12-19T18:47:54.655Z 37.7156 -97.2279 4 km NE of Eastborough, Kansas 5 3.4 mwr 2020-12-10T00:53:25.719Z 36.5298333 -98.98817 9 km NNE of Quinlan, Oklahoma 7.88 3.02 ml 2020-12-08T16:54:03.780Z 37.718 -97.2422 3 km NNE of Eastborough, Kansas 5 3 mb_lg 2020-10-26T06:08:57.226Z 38.6838 -97.0718 0 km SSE of Hope, Kansas 5 3 mb_lg 2020-10-24T02:49:00.783Z 38.7205 -97.0628 3 km NNE of Hope, Kansas 5 3 mb_lg 2020-10-23T04:08:12.289Z 36.874 -97.44683 7 km N of Nardin, Oklahoma 7.56 3.32 ml 2020-10-23T01:17:33.130Z 36.8743333 -97.4485 7 km N of Nardin, Oklahoma 7.76 3.22 ml 2020-10-22T04:37:08.650Z 36.3645 -97.3445 9 km NNW of Perry, Oklahoma 6.95 3.1 ml 2020-10-21T14:33:28.399Z 36.2765 -97.49833 3 km W of Lucien, Oklahoma 7.31 3.17 ml 2020-09-20T10:54:54.000Z 36.1288333 -97.59217 4 km SE of Marshall, Oklahoma 7.17 3.4 ml 2020-09-06T11:08:14.710Z 34.745 -97.573 7 km SSE of Erin Springs, Oklahoma 7 3.43 ml 2020-08-31T15:18:24.660Z 36.3616667 -98.1515 3 km SE of Meno, Oklahoma 6.69 3.5 ml 2020-08-16T02:49:46.619Z 36.1526667 -97.66833 3 km W of Marshall, Oklahoma 5.16 3.09 ml 2020-08-14T08:27:17.579Z 36.3588333 -97.34967 9 km NW of Perry, Oklahoma 7.05 3.2 ml 2020-08-05T10:13:10.859Z 36.2908333 -98.17433 5 km N of Ames, Oklahoma 7.93 3.05 ml 2020-08-03T23:13:45.670Z 36.3576667 -97.3595 9 km NW of Perry, Oklahoma 7.56 3.44 ml 2020-07-15T15:07:21.140Z 36.8701667 -97.43367 7 km N of Nardin, Oklahoma 7 3.45 ml 2020-06-25T22:43:23.570Z 36.416 -98.13367 18km SE of Helena, Oklahoma 7.92 3 ml 2020-06-22T21:47:59.909Z 36.865 -97.4355 15km WNW of Blackwell, Oklahoma 5 3.7 ml 2020-06-21T03:15:41.689Z 36.3588333 -97.35883 8km NW of Perry, Oklahoma 7.78 4.2 mwr 2020-06-18T18:38:13.869Z 35.5203333 -96.78517 9km WNW of Prague, Oklahoma 7 3.04 ml 2020-06-03T23:00:27.260Z 36.3548333 -97.357 10km NW of Perry, Oklahoma 7.71 3.41 ml 2020-05-24T14:53:59.740Z 36.3645 -98.1585 23km SSE of Helena, Oklahoma 7.89 3.87 ml 2020-05-17T11:10:49.119Z 34.9745 -97.69883 18km S of Blanchard, Oklahoma 11.2 3.05 ml 2020-05-08T01:58:40.079Z 36.0266667 -98.0935 19km WSW of Hennessey, Oklahoma 5.75 3 ml 2020-05-04T19:34:22.679Z 36.0235 -98.0955 19km WSW of Hennessey, Oklahoma 5.85 3.24 ml 2020-05-02T00:50:10.330Z 35.1015 -97.78367 12km ENE of Chickasha, Oklahoma 9.63 3.26 ml 2020-04-25T03:59:36.250Z 36.8626667 -97.43733 15km WNW of Blackwell, Oklahoma 5 3.33 ml 2020-04-04T03:33:08.050Z 36.3761667 -97.718 14km E of Enid, Oklahoma 5 3.6 mwr 2020-04-03T22:35:29.949Z 36.3745 -97.7205 15km ESE of Enid, Oklahoma 5 3.65 mwr 2020-04-01T18:40:38.159Z 35.1448333 -95.352 2km ENE of Quinton, Oklahoma 8.84 3.05 ml 2020-03-29T18:07:28.260Z 36.6901667 -97.6865 13km SSE of Medford, Oklahoma 5 3.12 ml 2020-03-26T17:00:04.169Z 36.3536667 -97.3545 10km NW of Perry, Oklahoma 6 3.36 ml 2020-03-22T17:50:50.454Z 38.699 -97.1001 14km WNW of Herington, Kansas 5 3.1 mb_lg 2020-03-19T08:42:03.189Z 35.105 -97.77083 11km WSW of Blanchard, Oklahoma 8.43 3.02 ml 2020-03-12T05:33:48.607Z 38.7397 -97.0401 11km NW of Herington, Kansas 5 3.5 mb_lg 2020-03-06T01:42:14.169Z 34.9668333 -97.708 18km SSW of Blanchard, Oklahoma 10.2 3.38 ml 2020-02-08T23:19:15.275Z 37.0626 -97.9778 11km SSE of Anthony, Kansas 5 3.5 mb_lg 2020-02-07T02:42:26.079Z 35.0988333 -95.3885 2km SW of Quinton, Oklahoma 6.33 3.21 ml 2020-02-07T01:49:01.860Z 35.1013333 -95.3845 2km SW of Quinton, Oklahoma 5.82 3.24 ml 2020-01-29T23:19:35.733Z 38.3889 -96.9189 9km ENE of Marion, Kansas 5 3.1 mb_lg 2020-01-19T19:08:42.322Z 38.0246 -97.973 2km W of South Hutchinson, Kansas 5 4.5 mwr 2020-01-11T05:40:17.809Z 36.2918333 -98.17233 23km W of Waukomis, Oklahoma 4.01 3.44 ml 2020-01-01T07:04:14.310Z 36.4115 -98.14467 19km SE of Helena, Oklahoma 7.8 3.08 ml 2019-12-30T05:57:55.689Z 36.8743333 -97.91333 17km WNW of Medford, Oklahoma 7.35 3.73 ml 2019-12-25T11:24:33.350Z 35.9073333 -98.52317 12km WNW of Watonga, Oklahoma 7.53 3.38 ml 2019-12-15T16:09:05.679Z 35.799 -96.65467 4km N of Stroud, Oklahoma 7.09 3.59 ml 2019-12-03T21:36:15.380Z 35.1401667 -95.32733 3km E of Quinton, Oklahoma 6.77 3.07 ml 2019-12-02T12:12:11.259Z 35.5381667 -96.76133 8km NW of Prague, Oklahoma 9.66 3.75 ml 2019-11-27T15:43:06.669Z 35.8476667 -98.07233 12km W of Kingfisher, Oklahoma 6.58 3.05 ml 2019-11-24T11:24:55.530Z 35.8236667 -98.0975 15km WSW of Kingfisher, Oklahoma 6.3 3.48 ml 2019-11-22T21:54:49.700Z 36.2906667 -98.18767 21km NNE of Okeene, Oklahoma 6.01 3.57 ml 2019-11-22T21:54:05.660Z 36.2941667 -98.19133 22km NNE of Okeene, Oklahoma 6.15 3.58 ml 2019-11-22T05:44:36.170Z 36.3693333 -97.70783 15km E of Enid, Oklahoma 8.84 3.6 mwr 2019-11-11T23:21:12.511Z 38.4752 -96.9101 16km NNE of Marion, Kansas 5 3 mb_lg 2019-11-05T11:03:56.210Z 36.7025 -97.66167 12km SSE of Medford, Oklahoma 7.38 3.06 ml Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 1 of 52
Preparer: D. Horne; Date: 02/15/21 Table 2 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Historical Earthquakes in Oklahoma Greater than 3.0 Magnitude (As of February 9, 2021)
Date and Time Latitude Longitude Epicenter Depth (km) Magnitude Mag. Type1 2019-11-03T02:08:58.556Z 38.0276 -97.9828 3km W of South Hutchinson, Kansas 2.21 3 mwr 2019-10-23T21:39:04.735Z 38.0193 -97.9773 3km WSW of South Hutchinson, Kansas 4.03 3.1 mb_lg 2019-10-22T21:03:58.750Z 36.9295 -98.02467 24km S of Anthony, Kansas 6.5 3.67 ml 2019-10-21T16:09:15.339Z 35.132 -95.3495 2km N of Quinton, Oklahoma 5 3.13 ml 2019-10-08T19:47:35.759Z 36.0311667 -98.08733 19km WSW of Hennessey, Oklahoma 6.2 3.01 ml 2019-10-08T19:10:45.210Z 36.0293333 -98.08867 19km WSW of Hennessey, Oklahoma 5.84 3.03 ml 2019-09-27T14:50:59.979Z 36.475 -98.744 32km NW of Fairview, Oklahoma 8.22 3.45 ml 2019-09-21T23:38:10.449Z 35.897 -98.53183 12km WNW of Watonga, Oklahoma 5.29 3.09 ml 2019-09-21T23:38:08.730Z 35.8965 -98.5265 12km WNW of Watonga, Oklahoma 6.71 3.09 ml 2019-09-21T08:31:33.894Z 37.1058 -97.5957 8km N of Caldwell, Kansas 5 3 mb_lg 2019-09-17T06:44:43.250Z 36.9223333 -97.4815 16km SE of Caldwell, Kansas 6.06 3.25 ml 2019-09-16T14:59:34.201Z 38.359 -96.8849 11km E of Marion, Kansas 5 3.2 mb_lg 2019-09-16T07:37:27.525Z 38.487 -96.7491 22km NW of Cottonwood Falls, Kansas 5 3.8 mb 2019-09-09T17:57:06.830Z 36.427 -96.9045 13km NW of Pawnee, Oklahoma 6.62 3.25 ml 2019-09-02T22:08:39.000Z 36.9283333 -97.4745 16km SE of Caldwell, Kansas 7.65 3.24 ml 2019-09-01T13:21:06.651Z 38.034 -97.9805 3km W of South Hutchinson, Kansas 3.13 3.1 mb_lg 2019-08-29T08:39:35.780Z 35.1031667 -96.3185 8km E of Holdenville, Oklahoma 3.02 3.03 ml 2019-08-18T09:07:13.009Z 35.1273333 -95.353 2km NNE of Quinton, Oklahoma 5.9 3.71 mwr 2019-08-18T08:45:29.680Z 38.0146 -98.005 5km WSW of South Hutchinson, Kansas 5 4.1 mwr 2019-08-17T01:03:39.363Z 38.0204 -98.0021 5km W of South Hutchinson, Kansas 5 3.1 mb_lg 2019-08-16T13:10:49.939Z 37.9952 -98.0943 14km WSW of South Hutchinson, Kansas 5 3.1 mb_lg 2019-08-16T12:59:10.201Z 38.0254 -97.9827 3km W of South Hutchinson, Kansas 5 4.2 mwr 2019-08-13T19:40:19.929Z 36.7016667 -97.66233 12km SSE of Medford, Oklahoma 7.2 3.44 ml 2019-08-12T01:26:45.859Z 35.1338333 -95.35583 1km ENE of Quinton, Oklahoma 5 3.19 ml 2019-08-09T06:34:58.329Z 35.8081667 -98.11267 15km NW of Okarche, Oklahoma 7 3.43 ml 2019-08-07T23:38:24.539Z 35.8311667 -98.09333 15km WSW of Kingfisher, Oklahoma 7 3.46 ml 2019-08-02T10:56:18.969Z 36.3616667 -98.15283 23km SSE of Helena, Oklahoma 7.18 3.37 mwr 2019-07-27T12:52:50.210Z 35.8343333 -98.089 14km WSW of Kingfisher, Oklahoma 6.81 3.12 ml 2019-07-27T04:23:28.100Z 35.831 -98.09067 14km W of Kingfisher, Oklahoma 7.37 3.52 ml 2019-07-25T18:10:23.199Z 35.8416667 -98.0785 12km W of Kingfisher, Oklahoma 7.47 3.35 ml 2019-07-25T09:39:49.439Z 35.8426667 -98.07567 12km W of Kingfisher, Oklahoma 7.46 3.33 ml 2019-07-25T05:48:18.660Z 35.843 -98.076 12km W of Kingfisher, Oklahoma 6.45 3.91 ml 2019-07-25T02:36:33.560Z 36.0361667 -98.07717 17km WSW of Hennessey, Oklahoma 6.82 3.03 ml 2019-07-25T02:36:32.509Z 36.0278333 -98.09117 19km WSW of Hennessey, Oklahoma 5.77 3.33 ml 2019-07-24T23:25:52.810Z 35.8151667 -98.09283 12km W of Kingfisher, Oklahoma 7 3.16 ml 2019-07-09T14:44:09.019Z 35.8376667 -98.07917 12km W of Kingfisher, Oklahoma 6.29 3.11 ml 2019-06-20T11:23:03.600Z 36.2891667 -97.51083 19km W of Perry, Oklahoma 7.26 3.02 ml 2019-06-14T03:15:21.170Z 35.7988333 -96.6555 5km N of Stroud, Oklahoma 7.09 3.44 ml 2019-05-26T12:54:07.890Z 36.7 -97.6962 12km SSE of Medford, Oklahoma 5 3.1 mb_lg 2019-05-18T09:55:36.727Z 36.7037 -97.6626 13km SSE of Medford, Oklahoma 5 3.3 mwr 2019-05-17T20:33:15.683Z 36.6697 -97.7055 15km S of Medford, Oklahoma 5 4.4 mwr 2019-05-16T22:53:43.486Z 35.98 -96.7982 2km WSW of Cushing, Oklahoma 5 3.1 mwr 2019-05-16T18:19:46.826Z 35.0879 -96.29 9km E of Holdenville, Oklahoma 5 3.3 mb_lg 2019-04-30T04:51:25.095Z 36.6971 -97.6852 12km SSE of Medford, Oklahoma 2.95 3.1 mwr 2019-03-22T22:36:19.199Z 36.6956667 -97.68717 11km SSE of Medford, Oklahoma 7.44 3.19 ml 2019-03-01T00:15:23.350Z 35.7312 -97.566 11km NW of Edmond, Oklahoma 5 3.1 mb_lg 2019-02-28T02:13:48.140Z 36.2719 -97.4989 19km W of Perry, Oklahoma 5 3.2 mwr 2019-02-27T13:01:06.160Z 36.8786 -97.9145 17km WNW of Medford, Oklahoma 6.76 3.2 mwr 2019-02-26T23:50:24.770Z 36.878 -97.9301 19km WNW of Medford, Oklahoma 5 3.8 mwr 2019-02-19T18:08:10.770Z 35.1046 -97.8624 8km NE of Chickasha, Oklahoma 5 3 mb_lg 2019-02-14T00:48:30.899Z 36.4105 -96.8711 10km NW of Pawnee, Oklahoma 5 3.2 mb_lg 2019-02-13T16:39:49.890Z 35.5582 -97.1129 8km NNE of Harrah, Oklahoma 5 3.4 mb_lg 2019-01-25T18:32:40.780Z 37.06 -97.3647 21km E of Caldwell, Kansas 4.29 3.3 mwr 2019-01-21T05:27:36.080Z 36.3725 -98.1353 22km SSE of Helena, Oklahoma 5 3.3 mb_lg 2019-01-17T03:55:06.320Z 37.0741 -97.975 10km SSE of Anthony, Kansas 10 3.1 ml 2019-01-16T03:34:30.470Z 37.0649 -97.3543 22km S of Wellington, Kansas 5 4 mwr 2019-01-15T13:28:02.210Z 36.2129 -97.5715 26km WSW of Perry, Oklahoma 5 3.9 mwr 2019-01-14T08:20:07.540Z 36.2715 -97.624 24km E of Waukomis, Oklahoma 5 3.6 mb_lg 2019-01-06T10:38:29.500Z 36.372 -98.1346 22km SSE of Helena, Oklahoma 5 3 mb_lg 2018-12-29T04:05:57.890Z 36.0998 -97.8674 3km ESE of Hennessey, Oklahoma 5 3 mb_lg 2018-12-28T12:32:28.980Z 36.3858 -98.386 15km NNE of Fairview, Oklahoma 5 3.1 mb_lg 2018-12-22T23:20:25.020Z 36.879 -97.9152 18km WNW of Medford, Oklahoma 7.21 3.1 ml 2018-12-17T07:42:48.230Z 36.4566 -98.7897 34km NW of Fairview, Oklahoma 5 3 mb_lg Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 2 of 52
Preparer: D. Horne; Date: 02/15/21 Table 2 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Historical Earthquakes in Oklahoma Greater than 3.0 Magnitude (As of February 9, 2021)
Date and Time Latitude Longitude Epicenter Depth (km) Magnitude Mag. Type1 2018-12-15T21:31:04.050Z 36.2856 -97.5158 20km W of Perry, Oklahoma 4.86 3 mb_lg 2018-12-15T06:09:27.520Z 36.4483 -98.778 33km NW of Fairview, Oklahoma 5 3.1 mb_lg 2018-12-10T06:23:03.630Z 34.0395 -97.406 13km S of Wilson, Oklahoma 19.61 3 ml 2018-12-05T16:55:16.730Z 36.1019 -97.8459 4km E of Hennessey, Oklahoma 5 3 mb_lg 2018-12-05T02:02:59.100Z 36.4547 -98.8018 35km NW of Fairview, Oklahoma 5.79 3.2 ml 2018-12-02T00:12:48.870Z 36.4162 -96.9059 12km NW of Pawnee, Oklahoma 7.17 3.1 mb_lg 2018-11-30T23:56:05.550Z 37.3583 -97.9744 9km NNE of Harper, Kansas 5.8 3.2 mb_lg 2018-11-27T08:07:07.060Z 34.6387 -96.3223 14km NW of Coalgate, Oklahoma 6.07 3.2 ml 2018-11-26T15:42:49.810Z 34.053 -97.4342 12km S of Wilson, Oklahoma 6 3.1 ml 2018-11-26T13:52:51.530Z 34.6437 -96.3232 15km NW of Coalgate, Oklahoma 5.68 3 ml 2018-11-26T13:46:12.670Z 34.6358 -96.3272 14km NW of Coalgate, Oklahoma 5.8 3.1 ml 2018-11-25T22:24:48.620Z 35.233 -97.7888 6km SSE of Tuttle, Oklahoma 6 3 ml 2018-11-22T23:01:52.440Z 36.9198 -97.9274 21km NW of Medford, Oklahoma 5 3.1 ml 2018-11-19T18:12:55.280Z 35.0272 -97.623 12km SSE of Blanchard, Oklahoma 9.2 3 ml 2018-11-18T04:57:58.210Z 35.8532 -97.8183 10km E of Kingfisher, Oklahoma 6.54 3 ml 2018-11-16T17:25:19.970Z 36.9648 -97.8413 19km NNW of Medford, Oklahoma 7.3 3 ml 2018-11-14T03:08:50.040Z 36.2908 -97.0122 19km NNE of Stillwater, Oklahoma 5.32 3.3 mb_lg 2018-11-12T18:39:18.780Z 36.4018 -96.8737 9km NW of Pawnee, Oklahoma 5 3 mb_lg 2018-11-05T00:53:57.000Z 35.2355 -97.7523 8km SE of Tuttle, Oklahoma 6.28 3.3 ml 2018-10-25T10:26:01.200Z 35.9631 -97.2321 2km NE of Langston, Oklahoma 4.964 3 ml 2018-10-23T11:29:00.600Z 34.0524 -97.4131 12km S of Wilson, Oklahoma 6.535 3.4 ml 2018-10-22T18:33:30.900Z 36.2176 -98.9302 20km N of Taloga, Oklahoma 3.965 3.1 ml 2018-10-10T10:24:53.800Z 35.6779 -97.0834 10km E of Luther, Oklahoma 6.132 3.6 ml 2018-10-09T22:32:36.500Z 36.842 -97.6888 5km NE of Medford, Oklahoma 2.542 3.5 ml 2018-10-03T09:28:05.100Z 36.2204 -98.9368 20km N of Taloga, Oklahoma 5.54 3.3 ml 2018-10-03T07:36:41.360Z 37.371 -97.984 10km NNE of Harper, Kansas 5 3.5 mb_lg 2018-10-02T10:29:16.300Z 36.2203 -98.9298 20km N of Taloga, Oklahoma 3.755 3 ml 2018-10-01T00:33:23.300Z 37.1802 -97.4537 11km SW of Wellington, Kansas 6.47 3 ml 2018-09-29T12:45:47.400Z 36.1793 -97.4823 21km SW of Perry, Oklahoma 5.48 3.4 mwr 2018-09-28T07:07:08.700Z 35.0418 -97.5829 12km SSE of Blanchard, Oklahoma 6.989 3 ml 2018-09-27T03:46:11.000Z 35.9603 -97.2337 2km NE of Langston, Oklahoma 6.707 3.3 ml 2018-09-27T01:55:52.600Z 36.2051 -98.921 18km NNE of Taloga, Oklahoma 6.133 3 ml 2018-09-26T21:47:49.000Z 34.0505 -97.4332 12km S of Wilson, Oklahoma 6.384 3 ml 2018-09-26T07:37:17.300Z 36.1555 -98.2908 4km NNE of Okeene, Oklahoma 5.106 3 ml 2018-09-24T19:46:05.700Z 35.9609 -97.2376 2km NE of Langston, Oklahoma 6.085 3.1 ml 2018-09-19T05:15:16.000Z 35.8444 -97.3384 8km ESE of Guthrie, Oklahoma 4.48 3 ml 2018-09-13T18:30:50.000Z 36.8261 -98.4513 11km NW of Cherokee, Oklahoma 3.145 3 ml 2018-09-13T07:43:31.750Z 37.3406 -97.9786 7km NE of Harper, Kansas 5.3 3.1 mb_lg 2018-09-11T16:11:29.400Z 36.2153 -97.5688 26km WSW of Perry, Oklahoma 6.708 3.3 ml 2018-09-09T01:48:38.500Z 36.489 -98.7253 32km NW of Fairview, Oklahoma 7.712 3.5 ml 2018-09-08T14:36:33.400Z 36.4603 -98.7576 32km NW of Fairview, Oklahoma 7.664 3.5 mwr 2018-09-08T06:23:24.870Z 37.1983 -97.7742 23km ENE of Anthony, Kansas 6.46 3.7 mb 2018-08-31T04:44:29.930Z 37.3866 -97.9537 12km NNE of Harper, Kansas 5 3 mb_lg 2018-08-30T20:37:08.100Z 37.3356 -97.8648 15km ENE of Harper, Kansas 5 3.9 mwr 2018-08-30T04:54:14.130Z 37.361 -97.851 17km ENE of Harper, Kansas 10.32 3.2 mb_lg 2018-08-30T00:12:55.860Z 37.3722 -97.8452 18km ENE of Harper, Kansas 5 3.1 mb_lg 2018-08-29T23:56:20.270Z 37.3549 -97.859 16km ENE of Harper, Kansas 9.75 3 mb_lg 2018-08-29T03:04:06.600Z 36.4571 -98.8042 35km NW of Fairview, Oklahoma 4.87 3.2 mwr 2018-08-27T07:44:55.020Z 37.3656 -97.9945 9km NNE of Harper, Kansas 5 3.4 mb_lg 2018-08-15T10:27:57.510Z 37.3567 -97.9802 8km NNE of Harper, Kansas 5 3 mb_lg 2018-08-13T19:08:11.500Z 34.9882 -97.5381 16km W of Purcell, Oklahoma 3.692 3 ml 2018-08-13T18:01:24.300Z 36.5158 -99.0066 19km ENE of Mooreland, Oklahoma 5.93 3 ml 2018-08-08T23:07:43.200Z 36.2135 -97.5522 25km WSW of Perry, Oklahoma 6.676 3 ml 2018-08-08T02:57:26.300Z 36.8451 -97.6978 5km NE of Medford, Oklahoma 6.957 3.4 mwr 2018-08-06T10:39:22.600Z 36.4561 -98.7891 34km NW of Fairview, Oklahoma 6.28 3 ml 2018-08-03T20:58:21.400Z 36.482 -97.7331 16km NE of Enid, Oklahoma 4.843 3.2 ml 2018-08-01T10:11:14.000Z 35.0409 -97.5912 12km SSE of Blanchard, Oklahoma 6.139 3.4 mwr 2018-07-31T05:12:54.700Z 36.7774 -98.6821 3km SSW of Alva, Oklahoma 11.247 3.2 ml 2018-07-27T10:43:06.600Z 36.8475 -97.6964 5km NE of Medford, Oklahoma 6.883 3.3 ml 2018-07-27T10:06:44.100Z 36.6324 -98.5139 19km SW of Cherokee, Oklahoma 6.325 3.1 ml 2018-07-26T21:02:00.900Z 36.4462 -98.7791 33km NW of Fairview, Oklahoma 7.796 3.3 ml 2018-07-26T20:42:49.000Z 35.7956 -97.1937 14km N of Luther, Oklahoma 5.407 3 ml 2018-07-24T22:35:57.500Z 35.6707 -97.406 6km ENE of Edmond, Oklahoma 7.139 3.3 mwr Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 3 of 52
Preparer: D. Horne; Date: 02/15/21 Table 2 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Historical Earthquakes in Oklahoma Greater than 3.0 Magnitude (As of February 9, 2021)
Date and Time Latitude Longitude Epicenter Depth (km) Magnitude Mag. Type1 2018-07-24T21:10:29.500Z 35.6711 -97.4003 7km ENE of Edmond, Oklahoma 6.654 3.2 ml 2018-07-20T21:01:54.600Z 35.8972 -97.2759 5km SSW of Langston, Oklahoma 6.659 3.1 ml 2018-07-20T19:46:56.300Z 35.8955 -97.2745 5km SSW of Langston, Oklahoma 7.285 3 ml 2018-07-18T05:19:28.400Z 36.6572 -98.467 14km SW of Cherokee, Oklahoma 7.343 3.2 ml 2018-07-18T04:48:52.000Z 36.6571 -98.4679 14km SW of Cherokee, Oklahoma 7.309 3 ml 2018-07-17T20:38:07.850Z 35.655 -97.4134 5km E of Edmond, Oklahoma 6 3.1 mb_lg 2018-07-13T06:06:05.700Z 36.4543 -98.7663 32km NW of Fairview, Oklahoma 8.725 3.2 mwr 2018-07-10T11:56:36.000Z 36.848 -97.6983 5km NE of Medford, Oklahoma 7.906 3.1 ml 2018-07-10T07:18:17.500Z 36.2977 -97.5297 21km W of Perry, Oklahoma 7.735 3.4 mwr 2018-07-07T21:50:12.700Z 36.9859 -97.4955 11km ESE of Caldwell, Kansas 5.353 3.4 ml 2018-07-02T21:08:51.500Z 35.8906 -97.2822 6km SSW of Langston, Oklahoma 6.136 3.5 ml 2018-07-02T12:28:04.200Z 35.9739 -97.7967 17km NE of Kingfisher, Oklahoma 5.676 3 ml 2018-07-02T00:03:12.700Z 36.7628 -98.0658 25km E of Cherokee, Oklahoma 6.792 3.1 ml 2018-07-01T02:58:14.200Z 35.8891 -97.2831 6km SSW of Langston, Oklahoma 6.283 3.2 ml 2018-06-30T06:28:14.500Z 35.3761 -98.1118 15km W of Union City, Oklahoma 11.976 3.1 ml 2018-06-27T14:04:25.230Z 37.2998 -97.4185 5km NW of Wellington, Kansas 5 3.2 mb_lg 2018-06-22T23:38:20.000Z 36.6684 -98.7615 17km SSW of Alva, Oklahoma 6.545 3 ml 2018-06-22T03:29:55.200Z 36.1016 -97.8355 5km E of Hennessey, Oklahoma 5.048 3.2 mwr 2018-06-19T16:00:38.600Z 36.2788 -97.5072 19km W of Perry, Oklahoma 8.366 3.8 ml 2018-06-19T15:58:09.800Z 35.3674 -98.0687 11km WSW of Union City, Oklahoma 6.614 3.1 ml 2018-06-18T22:21:22.930Z 37.3495 -97.973 8km NE of Harper, Kansas 5 3.1 mb_lg 2018-06-17T06:16:15.400Z 36.0677 -97.5723 12km N of Crescent, Oklahoma 6.252 3.3 ml 2018-06-15T20:56:08.600Z 36.0742 -97.5593 13km NNE of Crescent, Oklahoma 6.615 4 mwr 2018-06-11T19:20:31.500Z 36.4909 -98.6218 27km NNW of Fairview, Oklahoma 5.851 3.1 ml 2018-06-09T13:59:41.400Z 36.764 -98.062 26km E of Cherokee, Oklahoma 9.5 4.4 mwr 2018-06-08T19:14:00.400Z 36.286 -97.5107 20km W of Perry, Oklahoma 6.597 3.2 ml 2018-06-07T07:01:54.100Z 36.286 -97.5091 19km W of Perry, Oklahoma 6.281 3.1 ml 2018-06-06T12:25:31.000Z 36.2309 -97.2945 6km S of Perry, Oklahoma 7.069 3 ml 2018-06-04T23:16:44.700Z 36.817 -97.6114 10km E of Medford, Oklahoma 5.712 3.1 ml 2018-06-04T11:23:57.400Z 36.6968 -97.6837 13km SSE of Medford, Oklahoma 6.788 3.2 mwr 2018-05-26T19:26:41.500Z 35.9936 -96.7497 1km ENE of Cushing, Oklahoma 4.372 3.2 ml 2018-05-23T00:15:49.000Z 35.6805 -97.3925 8km ENE of Edmond, Oklahoma 5.467 3.4 ml 2018-05-17T20:05:45.000Z 36.0674 -97.5709 12km N of Crescent, Oklahoma 6.077 3.7 ml 2018-05-15T13:40:21.500Z 36.0725 -97.5641 13km NNE of Crescent, Oklahoma 6.29 4 mwr 2018-05-14T09:22:25.100Z 36.0706 -97.5685 13km N of Crescent, Oklahoma 8.172 3 ml 2018-05-14T07:25:00.600Z 36.0713 -97.5655 13km NNE of Crescent, Oklahoma 6.858 4 mwr 2018-05-14T05:02:54.900Z 36.0718 -97.5679 13km N of Crescent, Oklahoma 7.949 3 ml 2018-05-13T23:28:48.300Z 36.0716 -97.5655 13km N of Crescent, Oklahoma 7.435 3.7 mwr 2018-05-09T17:25:15.500Z 36.5352 -98.9636 24km ENE of Mooreland, Oklahoma 5.829 3 ml 2018-04-30T11:01:24.400Z 36.4609 -98.7946 35km NW of Fairview, Oklahoma 5.364 3.2 ml 2018-04-28T05:53:25.500Z 36.1026 -97.8347 5km E of Hennessey, Oklahoma 5 3 ml 2018-04-26T19:23:18.300Z 36.945 -97.6324 9km SSW of Caldwell, Kansas 6.767 3 ml 2018-04-25T14:52:58.700Z 36.9404 -97.6368 10km SSW of Caldwell, Kansas 4.217 3 ml 2018-04-25T14:46:21.500Z 36.947 -97.6251 9km S of Caldwell, Kansas 6.908 3 ml 2018-04-24T13:17:48.000Z 36.4642 -96.8665 15km NNW of Pawnee, Oklahoma 5 3.4 ml 2018-04-21T14:26:02.100Z 36.1252 -97.2366 16km W of Stillwater, Oklahoma 5.233 3 ml 2018-04-20T19:53:34.100Z 36.9394 -97.6233 10km S of Caldwell, Kansas 5 3.1 ml 2018-04-20T19:33:54.800Z 36.9424 -97.6323 10km SSW of Caldwell, Kansas 5.863 3 ml 2018-04-20T19:28:49.100Z 36.9451 -97.6185 9km S of Caldwell, Kansas 5.546 3.6 mwr 2018-04-19T10:32:44.000Z 36.0386 -97.9022 7km S of Hennessey, Oklahoma 5.6 3.1 ml 2018-04-19T07:20:05.600Z 36.036 -97.9043 8km S of Hennessey, Oklahoma 5.88 3.5 ml 2018-04-19T06:36:34.900Z 36.4506 -98.7849 34km NW of Fairview, Oklahoma 6.355 3.6 mwr 2018-04-17T08:57:59.200Z 35.7812 -98.576 16km WSW of Watonga, Oklahoma 2.863 3.1 ml 2018-04-14T02:46:34.090Z 38.0247 -97.9926 4km W of South Hutchinson, Kansas 5 3.2 mb_lg 2018-04-09T10:22:20.300Z 36.2185 -97.5735 26km WSW of Perry, Oklahoma 4.935 4.6 mww 2018-04-09T09:26:31.200Z 36.2151 -97.5686 26km WSW of Perry, Oklahoma 6.35 3.1 mwr 2018-04-08T22:26:24.500Z 36.2982 -97.5311 21km W of Perry, Oklahoma 6.796 3.1 ml 2018-04-08T07:25:32.970Z 37.199 -97.7747 23km ENE of Anthony, Kansas 6.21 3.5 ml 2018-04-07T16:21:21.400Z 35.6721 -97.4039 7km ENE of Edmond, Oklahoma 6.916 3.5 ml 2018-04-07T12:23:23.800Z 36.2871 -97.5092 19km W of Perry, Oklahoma 7.266 3.7 ml 2018-04-07T12:16:03.300Z 36.2896 -97.5166 20km W of Perry, Oklahoma 5.791 4.6 mww 2018-04-07T09:48:03.500Z 36.2189 -97.5735 26km WSW of Perry, Oklahoma 6.271 3.3 ml 2018-04-06T15:21:31.500Z 36.2884 -97.5152 20km W of Perry, Oklahoma 8.169 3 ml Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 4 of 52
Preparer: D. Horne; Date: 02/15/21 Table 2 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Historical Earthquakes in Oklahoma Greater than 3.0 Magnitude (As of February 9, 2021)
Date and Time Latitude Longitude Epicenter Depth (km) Magnitude Mag. Type1 2018-04-06T15:07:12.900Z 36.2854 -97.5106 19km W of Perry, Oklahoma 6.292 3.9 mwr 2018-04-06T15:05:26.600Z 36.2831 -97.5084 19km W of Perry, Oklahoma 7.996 3 ml 2018-04-05T08:51:40.900Z 36.4671 -96.8676 15km NNW of Pawnee, Oklahoma 5.004 3.5 ml 2018-04-04T18:17:12.700Z 36.4665 -96.8674 15km NNW of Pawnee, Oklahoma 4.5 3.6 ml 2018-04-03T08:07:01.000Z 36.0865 -97.5442 15km NNE of Crescent, Oklahoma 6.283 3.1 ml 2018-04-01T01:34:49.700Z 35.378 -98.092 13km W of Union City, Oklahoma 7.15 3.1 ml 2018-03-24T17:07:57.000Z 36.8455 -97.7005 5km NE of Medford, Oklahoma 7.565 3 ml 2018-03-24T13:30:56.200Z 36.9938 -97.4917 11km ESE of Caldwell, Kansas 6.718 3.2 ml 2018-03-24T08:19:47.500Z 36.6963 -97.6853 13km SSE of Medford, Oklahoma 8.475 3.3 ml 2018-03-24T07:06:02.900Z 36.4849 -97.7577 14km NE of Enid, Oklahoma 7.368 3.1 ml 2018-03-23T01:43:09.600Z 35.8653 -96.6804 13km N of Stroud, Oklahoma 6.046 3 ml 2018-03-21T18:04:42.900Z 35.9725 -97.7941 17km NE of Kingfisher, Oklahoma 6.204 3 ml 2018-03-20T23:24:56.500Z 36.4534 -98.7699 33km NW of Fairview, Oklahoma 8.229 3.4 ml 2018-03-16T10:59:41.600Z 36.7131 -99.386 25km ESE of Buffalo, Oklahoma 4.312 3 ml 2018-03-10T20:37:25.500Z 36.8425 -98.2396 14km NE of Cherokee, Oklahoma 6.311 3 ml 2018-03-09T20:32:47.300Z 36.4891 -97.7531 15km NE of Enid, Oklahoma 5.715 3.1 ml 2018-03-09T06:16:45.500Z 36.4509 -98.7673 32km NW of Fairview, Oklahoma 7.245 3.6 ml 2018-03-08T10:48:21.430Z 38.0535 -97.9539 2km WSW of Hutchinson, Kansas 10.63 3.4 mb_lg 2018-03-06T19:46:12.700Z 36.9111 -98.328 17km N of Cherokee, Oklahoma 7.743 3.8 mwr 2018-03-05T06:35:19.600Z 36.4845 -97.7621 14km NE of Enid, Oklahoma 8.209 3 ml 2018-03-05T03:40:59.200Z 36.4833 -97.7491 15km NE of Enid, Oklahoma 8.229 4.2 mwr 2018-03-04T23:17:17.400Z 36.478 -97.7411 15km NE of Enid, Oklahoma 8.103 4.2 mwr 2018-03-01T20:26:59.230Z 38.042 -97.9875 4km WNW of South Hutchinson, Kansas 5 3.1 mb_lg 2018-03-01T05:10:47.800Z 35.6888 -97.3051 10km WNW of Luther, Oklahoma 5.248 3.7 ml 2018-02-26T07:46:25.700Z 36.2086 -97.4246 15km SW of Perry, Oklahoma 8 3 ml 2018-02-25T08:04:52.200Z 36.7557 -97.5248 19km ESE of Medford, Oklahoma 8.174 3 ml 2018-02-24T21:06:51.300Z 36.4519 -98.771 33km NW of Fairview, Oklahoma 8.133 3.3 ml 2018-02-24T11:55:45.300Z 36.913 -97.6509 13km SSW of Caldwell, Kansas 7.686 3.6 ml 2018-02-22T09:54:50.400Z 36.2298 -97.3408 8km SW of Perry, Oklahoma 8.201 3.1 ml 2018-02-21T00:18:36.900Z 36.1239 -97.8153 7km ENE of Hennessey, Oklahoma 7.394 3.4 ml 2018-02-18T04:44:48.600Z 35.7914 -98.5748 15km WSW of Watonga, Oklahoma 2.281 3.2 ml 2018-02-16T23:08:35.200Z 35.6892 -97.3031 10km WNW of Luther, Oklahoma 5.568 3.2 ml 2018-02-16T15:53:06.900Z 36.9554 -99.3476 28km ENE of Buffalo, Oklahoma 2.882 3.1 ml 2018-02-16T13:21:09.000Z 36.5336 -98.9685 23km ENE of Mooreland, Oklahoma 6.904 3.7 mwr 2018-02-16T07:16:06.300Z 36.5355 -98.9648 24km ENE of Mooreland, Oklahoma 6.753 3.4 ml 2018-02-13T03:34:37.000Z 36.0361 -97.9017 8km S of Hennessey, Oklahoma 4.599 3.2 ml 2018-02-11T11:40:26.200Z 36.033 -97.9069 8km S of Hennessey, Oklahoma 5.911 3.5 ml 2018-02-08T13:20:32.600Z 36.0363 -97.9003 8km S of Hennessey, Oklahoma 5.146 3 ml 2018-02-08T12:28:55.800Z 36.0415 -97.8949 7km S of Hennessey, Oklahoma 3.768 3 ml 2018-02-07T16:12:55.000Z 36.0403 -97.8983 7km S of Hennessey, Oklahoma 3.648 3.2 ml 2018-02-07T11:11:47.550Z 37.2033 -97.816 19km ENE of Anthony, Kansas 5.65 3.1 ml 2018-02-05T08:25:39.400Z 36.0355 -97.9032 8km S of Hennessey, Oklahoma 6.871 3.2 mwr 2018-02-05T08:20:51.700Z 36.0325 -97.906 8km S of Hennessey, Oklahoma 6.411 3.7 mwr 2018-02-04T09:39:36.400Z 34.6722 -97.4959 18km SSW of Maysville, Oklahoma 4.425 3.2 ml 2018-01-28T20:09:25.100Z 36.8544 -97.4305 14km WNW of Blackwell, Oklahoma 5 3 ml 2018-01-23T06:42:16.700Z 36.9542 -97.3656 18km NNW of Blackwell, Oklahoma 7.988 3 ml 2018-01-23T06:33:23.900Z 36.9551 -97.3628 18km NNW of Blackwell, Oklahoma 8.029 3 ml 2018-01-22T10:45:33.300Z 36.153 -97.661 21km ENE of Hennessey, Oklahoma 6.647 3.6 ml 2018-01-21T17:26:48.200Z 36.459 -98.8168 34km E of Mooreland, Oklahoma 6.01 3 ml 2018-01-16T05:03:11.900Z 36.1229 -97.8083 8km E of Hennessey, Oklahoma 5 3.1 ml 2018-01-13T01:04:08.100Z 35.6711 -97.4005 7km ENE of Edmond, Oklahoma 6.396 3.6 ml 2018-01-12T08:41:40.200Z 36.876 -97.442 16km WNW of Blackwell, Oklahoma 7.578 3.1 ml 2018-01-07T10:55:39.550Z 35.1145 -95.8344 20km NNW of McAlester, Oklahoma 5 3.1 ml 2018-01-03T04:00:29.800Z 36.1603 -98.377 7km NW of Okeene, Oklahoma 5.667 3.4 ml 2018-01-02T17:43:49.200Z 36.1523 -97.6696 21km ENE of Hennessey, Oklahoma 4.492 3.5 ml 2017-12-31T19:09:31.700Z 36.1511 -97.6653 21km ENE of Hennessey, Oklahoma 6.059 3.2 ml 2017-12-30T04:13:24.200Z 36.7203 -99.3909 24km ESE of Buffalo, Oklahoma 6.216 3.2 ml 2017-12-29T04:45:00.000Z 36.1543 -97.671 21km ENE of Hennessey, Oklahoma 5.644 3.8 mwr 2017-12-28T20:11:14.100Z 35.4215 -97.024 6km ESE of McLoud, Oklahoma 5.133 3.7 ml 2017-12-21T08:05:26.300Z 35.8917 -97.2867 6km SSW of Langston, Oklahoma 6.946 3.1 ml 2017-12-21T04:22:24.600Z 35.8931 -97.2909 6km SSW of Langston, Oklahoma 7.171 3.5 ml 2017-12-20T06:00:02.200Z 36.15 -97.6687 21km ENE of Hennessey, Oklahoma 5.047 3.5 ml 2017-12-19T23:58:02.500Z 36.1513 -97.6721 20km ENE of Hennessey, Oklahoma 5 3 ml Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 5 of 52
Preparer: D. Horne; Date: 02/15/21 Table 2 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Historical Earthquakes in Oklahoma Greater than 3.0 Magnitude (As of February 9, 2021)
Date and Time Latitude Longitude Epicenter Depth (km) Magnitude Mag. Type1 2017-12-19T16:57:27.300Z 36.153 -97.6706 21km ENE of Hennessey, Oklahoma 5 3.2 ml 2017-12-19T15:47:46.800Z 36.1542 -97.669 21km ENE of Hennessey, Oklahoma 4.5 3.2 ml 2017-12-19T14:33:03.800Z 34.9544 -97.8208 9km E of Ninnekah, Oklahoma 6.366 3 ml 2017-12-19T11:26:19.200Z 36.5457 -98.9637 24km ENE of Mooreland, Oklahoma 5 3.8 mwr 2017-12-18T13:47:21.100Z 35.8904 -97.2816 6km SSW of Langston, Oklahoma 5.755 3 ml 2017-12-16T13:38:16.500Z 35.889 -97.2831 6km SSW of Langston, Oklahoma 5.92 3 ml 2017-12-15T11:41:22.800Z 36.5118 -98.6412 30km NNW of Fairview, Oklahoma 5 3.1 ml 2017-12-15T08:18:58.400Z 35.7956 -96.9594 12km NW of Chandler, Oklahoma 7.097 3 ml 2017-12-14T16:35:38.690Z 37.2027 -97.812 20km ENE of Anthony, Kansas 5.57 3 ml 2017-12-14T16:29:21.660Z 37.2013 -97.812 20km ENE of Anthony, Kansas 4.52 3 ml 2017-12-10T12:02:45.100Z 36.7016 -98.4297 8km SW of Cherokee, Oklahoma 5 3.5 ml 2017-12-10T11:50:46.900Z 36.5034 -98.4645 18km WSW of Helena, Oklahoma 6.45 3.3 ml 2017-12-06T17:46:00.100Z 36.1543 -97.4844 23km SW of Perry, Oklahoma 7.568 3.2 ml 2017-12-05T04:26:38.200Z 36.3699 -97.1259 17km ENE of Perry, Oklahoma 6.706 4.1 mwr 2017-12-05T00:31:59.600Z 36.5837 -98.5266 23km W of Helena, Oklahoma 3.432 3 ml 2017-12-01T22:05:07.100Z 36.0121 -97.9287 11km SSW of Hennessey, Oklahoma 4.7 3.1 ml 2017-12-01T02:44:03.400Z 36.6396 -99.1881 22km N of Mooreland, Oklahoma 3.401 3 ml 2017-11-26T21:11:51.000Z 36.1069 -97.8283 6km E of Hennessey, Oklahoma 6.266 3.4 ml 2017-11-21T14:04:39.500Z 34.8772 -97.6821 8km WNW of Lindsay, Oklahoma 2.363 3 ml 2017-11-20T05:55:38.900Z 36.0179 -97.3284 10km NW of Langston, Oklahoma 6.031 3.2 ml 2017-11-19T08:20:31.500Z 35.6697 -97.391 8km ENE of Edmond, Oklahoma 6.031 3 ml 2017-11-19T08:12:50.900Z 35.6704 -97.3933 7km ENE of Edmond, Oklahoma 4.855 3.6 mwr 2017-11-18T18:41:55.900Z 36.1326 -98.9735 10km N of Taloga, Oklahoma 3.83 3.1 ml 2017-11-17T06:48:14.300Z 36.8739 -97.4438 16km WNW of Blackwell, Oklahoma 6.481 3.3 ml 2017-11-16T02:21:40.400Z 36.3675 -98.1585 22km SSE of Helena, Oklahoma 6.498 3.5 ml 2017-11-15T12:32:29.900Z 36.458 -98.7977 35km NW of Fairview, Oklahoma 6.044 3.2 ml 2017-11-09T08:45:12.800Z 36.8999 -97.5166 16km SSE of Caldwell, Kansas 5.909 3.2 ml 2017-11-08T11:47:16.200Z 36.2819 -97.5042 19km W of Perry, Oklahoma 7.338 3.5 mwr 2017-11-07T08:12:03.100Z 36.9172 -97.6473 13km SSW of Caldwell, Kansas 8.43 3.2 ml 2017-11-04T18:17:16.200Z 36.0344 -97.906 8km S of Hennessey, Oklahoma 7.671 3.3 ml 2017-11-04T04:23:32.900Z 36.3167 -96.9693 15km W of Pawnee, Oklahoma 5.944 3 ml 2017-11-04T01:17:10.000Z 36.1538 -97.4815 23km SW of Perry, Oklahoma 7.791 3 ml 2017-11-03T10:26:09.200Z 36.9108 -98.33 17km N of Cherokee, Oklahoma 4.978 3.1 ml 2017-11-02T23:31:31.300Z 36.9075 -98.3337 17km N of Cherokee, Oklahoma 6.589 3.4 ml 2017-11-02T12:59:57.700Z 36.9096 -98.3299 17km N of Cherokee, Oklahoma 9.847 3.7 ml 2017-11-02T12:06:17.300Z 36.0365 -97.9026 8km S of Hennessey, Oklahoma 6.282 3.5 ml 2017-11-02T04:29:24.700Z 36.3672 -98.1587 22km SSE of Helena, Oklahoma 6.518 3.1 ml 2017-11-01T20:54:11.600Z 36.0319 -97.9082 8km S of Hennessey, Oklahoma 6.355 3.7 ml 2017-11-01T13:19:39.300Z 36.0263 -97.9121 9km S of Hennessey, Oklahoma 5.637 3.7 ml 2017-10-31T12:18:13.000Z 36.0343 -97.9055 8km S of Hennessey, Oklahoma 5.823 3.2 ml 2017-10-31T10:30:27.100Z 36.0269 -97.9106 9km S of Hennessey, Oklahoma 5.642 3.3 ml 2017-10-31T10:04:49.700Z 36.0279 -97.9102 9km S of Hennessey, Oklahoma 5.906 3 ml 2017-10-31T09:50:51.400Z 36.0299 -97.9075 8km S of Hennessey, Oklahoma 4.207 3.9 mwr 2017-10-31T07:06:46.300Z 36.0328 -97.9046 8km S of Hennessey, Oklahoma 6.444 3.1 ml 2017-10-30T14:49:48.800Z 36.5046 -98.4681 18km WSW of Helena, Oklahoma 5.698 3.3 ml 2017-10-25T15:17:48.200Z 36.2824 -97.504 19km W of Perry, Oklahoma 7.408 3.1 ml 2017-10-24T01:36:27.400Z 36.0306 -97.9068 8km S of Hennessey, Oklahoma 7.429 3.3 ml 2017-10-21T16:03:47.500Z 36.9603 -97.7125 12km SW of Caldwell, Kansas 5.22 3.3 ml 2017-10-18T17:37:12.800Z 36.9137 -97.6539 13km SSW of Caldwell, Kansas 7.695 3.1 ml 2017-10-16T18:13:33.100Z 36.3059 -98.1882 24km NNE of Okeene, Oklahoma 7.199 3 ml 2017-10-13T17:52:42.600Z 36.843 -99.7192 7km W of Buffalo, Oklahoma 4.033 3 ml 2017-10-12T14:46:31.400Z 35.5993 -97.408 8km SE of Edmond, Oklahoma 4.791 3.3 ml 2017-10-11T23:29:06.460Z 37.3475 -98.1347 11km NW of Harper, Kansas 3.23 3.1 mb_lg 2017-10-05T17:43:16.800Z 36.4575 -98.8179 34km E of Mooreland, Oklahoma 6.605 3 ml 2017-10-05T02:26:01.200Z 36.4538 -98.7737 33km NW of Fairview, Oklahoma 8.342 3 ml 2017-10-05T00:12:01.000Z 36.4554 -98.7686 33km NW of Fairview, Oklahoma 8.187 3.3 mwr 2017-10-04T22:06:43.600Z 36.4583 -98.7619 32km NW of Fairview, Oklahoma 7.701 3.2 mwr 2017-10-01T19:43:43.900Z 36.204 -97.4235 15km SW of Perry, Oklahoma 8.03 3.3 ml 2017-10-01T05:48:37.200Z 36.4575 -98.7747 33km NW of Fairview, Oklahoma 6.167 3.5 ml 2017-09-28T04:56:33.800Z 35.9915 -96.8025 3km WNW of Cushing, Oklahoma 5.225 3 ml 2017-09-28T03:56:54.050Z 37.3582 -98.1499 13km NW of Harper, Kansas 5 3.2 mb_lg 2017-09-24T01:11:37.500Z 36.3711 -97.125 17km ENE of Perry, Oklahoma 6.683 3.8 mwr 2017-09-20T06:02:18.600Z 35.5634 -96.7377 9km NNW of Prague, Oklahoma 5 3 ml Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 6 of 52
Preparer: D. Horne; Date: 02/15/21 Table 2 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Historical Earthquakes in Oklahoma Greater than 3.0 Magnitude (As of February 9, 2021)
Date and Time Latitude Longitude Epicenter Depth (km) Magnitude Mag. Type1 2017-09-19T22:21:38.100Z 36.4583 -98.7977 35km NW of Fairview, Oklahoma 6.167 3.4 ml 2017-09-19T22:17:53.700Z 36.4573 -98.7991 35km NW of Fairview, Oklahoma 5.377 3.1 ml 2017-09-19T09:43:49.500Z 35.9907 -96.799 2km WNW of Cushing, Oklahoma 5.628 3.3 ml 2017-09-17T18:53:00.700Z 35.7926 -96.9842 13km NW of Chandler, Oklahoma 6.254 3.5 ml 2017-09-16T23:26:58.400Z 35.8609 -96.6861 12km NNW of Stroud, Oklahoma 6.664 3.8 mwr 2017-09-15T13:04:52.500Z 37.2798 -97.9665 5km E of Harper, Kansas 4.9 3 ml 2017-09-14T19:10:48.700Z 36.291 -97.5125 20km W of Perry, Oklahoma 7.742 3.4 ml 2017-09-14T05:49:37.800Z 36.7402 -98.3656 1km SSW of Cherokee, Oklahoma 7.992 3 ml 2017-09-14T04:14:41.080Z 37.2788 -97.9675 5km E of Harper, Kansas 4.96 3.4 ml 2017-09-14T03:40:29.600Z 36.2876 -97.5079 19km W of Perry, Oklahoma 7.302 3.3 ml 2017-09-12T20:10:25.500Z 36.7404 -98.368 1km SSW of Cherokee, Oklahoma 7.519 3 ml 2017-09-11T03:27:05.300Z 35.5637 -96.7392 9km NNW of Prague, Oklahoma 5 3.6 mwr 2017-09-10T07:13:56.400Z 35.9918 -96.804 3km WNW of Cushing, Oklahoma 5.961 3.3 ml 2017-09-09T20:47:50.700Z 35.9914 -96.8015 3km WNW of Cushing, Oklahoma 5.85 3.1 ml 2017-09-09T11:34:55.100Z 36.641 -97.7026 18km S of Medford, Oklahoma 8.008 3 ml 2017-09-08T22:28:21.800Z 36.2872 -97.5069 19km W of Perry, Oklahoma 6.887 3 ml 2017-09-08T02:26:23.700Z 36.6996 -97.683 12km SSE of Medford, Oklahoma 6.073 4.3 mwr 2017-09-06T03:20:54.700Z 36.1711 -96.9168 14km ENE of Stillwater, Oklahoma 7.233 3.3 ml 2017-09-04T23:03:01.300Z 35.6618 -97.183 1km E of Luther, Oklahoma 5.179 3.7 ml 2017-08-31T07:21:16.520Z 37.5587 -97.7708 7km S of Cheney, Kansas 4.68 3.4 mb_lg 2017-08-30T00:43:56.500Z 36.9357 -97.8898 19km NW of Medford, Oklahoma 4.726 3 ml 2017-08-29T17:23:52.000Z 36.6135 -98.4002 13km WNW of Helena, Oklahoma 5.888 3.5 ml 2017-08-28T16:16:17.500Z 36.2837 -97.5043 19km W of Perry, Oklahoma 6.583 3.4 ml 2017-08-27T21:24:42.590Z 35.7871 -98.566 15km WSW of Watonga, Oklahoma 8.47 3.5 mb_lg 2017-08-27T15:01:15.740Z 37.2495 -97.565 17km W of Wellington, Kansas 4.53 3 ml 2017-08-25T18:52:44.780Z 36.3583 -98.2003 21km SSE of Helena, Oklahoma 5 3.2 mb_lg 2017-08-25T16:16:47.900Z 36.3621 -98.1982 21km SSE of Helena, Oklahoma 7.176 3 ml 2017-08-25T11:50:01.800Z 36.9374 -97.885 19km NW of Medford, Oklahoma 5.368 3.1 ml 2017-08-23T22:45:06.700Z 35.9808 -97.1979 6km NE of Langston, Oklahoma 7.199 3.2 ml 2017-08-23T18:03:54.500Z 35.677 -97.4139 6km ENE of Edmond, Oklahoma 5.725 3.6 ml 2017-08-20T18:49:55.400Z 35.8636 -96.6837 12km N of Stroud, Oklahoma 6.6 3.1 ml 2017-08-17T03:52:32.000Z 36.1238 -97.8157 7km ENE of Hennessey, Oklahoma 6.958 3.3 mwr 2017-08-15T17:13:16.110Z 36.9692 -99.3456 29km ENE of Buffalo, Oklahoma 5 3.1 mb_lg 2017-08-15T17:05:10.710Z 36.9789 -99.3658 28km NE of Buffalo, Oklahoma 5 3.1 mb_lg 2017-08-14T01:06:52.100Z 36.4583 -98.7745 33km NW of Fairview, Oklahoma 6.239 3 ml 2017-08-12T08:51:13.700Z 36.4571 -98.7807 34km NW of Fairview, Oklahoma 6.46 3 mb_lg 2017-08-09T21:15:30.940Z 37.127 -97.6132 10km N of Caldwell, Kansas 6.08 3.7 mwr 2017-08-09T07:13:36.520Z 36.2333 -98.4083 7km ESE of Fairview, Oklahoma 5 3.2 mb_lg 2017-08-06T02:38:02.370Z 37.2757 -97.618 12km S of Conway Springs, Kansas 4.46 3 ml 2017-08-05T20:13:00.710Z 37.271 -97.6243 13km S of Conway Springs, Kansas 2.94 3.4 ml 2017-08-05T03:32:52.030Z 37.1248 -97.615 10km N of Caldwell, Kansas 4.11 3.4 ml 2017-08-05T03:14:10.290Z 37.1268 -97.6168 10km N of Caldwell, Kansas 4.15 3.2 ml 2017-08-03T16:11:46.400Z 35.6733 -97.4071 6km ENE of Edmond, Oklahoma 5.427 3.5 ml 2017-08-03T14:50:09.400Z 35.8639 -96.6759 12km N of Stroud, Oklahoma 6.432 3.5 ml 2017-08-03T11:05:40.800Z 35.8352 -97.391 5km SSE of Guthrie, Oklahoma 6.034 3.1 ml 2017-08-03T06:40:44.100Z 35.6745 -97.403 7km ENE of Edmond, Oklahoma 5.767 3.3 mwr 2017-08-03T04:37:59.200Z 36.4554 -98.7938 34km NW of Fairview, Oklahoma 6.599 3.3 ml 2017-08-03T04:33:51.900Z 36.4564 -98.795 35km NW of Fairview, Oklahoma 6.503 3.2 ml 2017-08-03T02:56:37.300Z 35.672 -97.4047 6km ENE of Edmond, Oklahoma 5.031 4.2 mwr 2017-08-02T22:16:37.700Z 35.6717 -97.4056 6km ENE of Edmond, Oklahoma 6.271 3 ml 2017-08-02T20:45:26.900Z 35.6704 -97.4038 7km ENE of Edmond, Oklahoma 6.477 3.3 ml 2017-08-02T07:49:32.800Z 35.6703 -97.4039 6km ENE of Edmond, Oklahoma 6.391 3.3 ml 2017-08-02T05:18:52.400Z 35.673 -97.4057 6km ENE of Edmond, Oklahoma 6.785 3.3 mwr 2017-08-02T02:42:17.800Z 35.669 -97.3985 7km ENE of Edmond, Oklahoma 6.698 3 ml 2017-08-01T19:43:48.460Z 36.5374 -98.9612 24km ENE of Mooreland, Oklahoma 9.96 3.1 mwr 2017-08-01T07:42:22.100Z 36.4562 -98.8023 35km NW of Fairview, Oklahoma 6.446 3.1 ml 2017-08-01T06:25:12.600Z 37.1282 -97.6122 10km N of Caldwell, Kansas 3.79 3.3 ml 2017-07-30T00:13:45.470Z 38.0255 -98.0035 5km W of South Hutchinson, Kansas 3.6 3 mb_lg 2017-07-23T17:11:23.900Z 36.7494 -98.0416 28km E of Cherokee, Oklahoma 7.302 3.3 ml 2017-07-21T12:52:38.400Z 35.7986 -96.6506 5km N of Stroud, Oklahoma 6.198 3.3 ml 2017-07-21T11:58:59.900Z 36.9766 -99.3847 26km NE of Buffalo, Oklahoma 7.328 3.1 ml 2017-07-19T00:20:05.300Z 36.0399 -97.1245 10km SW of Stillwater, Oklahoma 6.381 3.2 mwr 2017-07-18T21:59:51.300Z 35.8642 -96.6838 13km N of Stroud, Oklahoma 6.363 3.2 ml Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 7 of 52
Preparer: D. Horne; Date: 02/15/21 Table 2 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Historical Earthquakes in Oklahoma Greater than 3.0 Magnitude (As of February 9, 2021)
Date and Time Latitude Longitude Epicenter Depth (km) Magnitude Mag. Type1 2017-07-18T02:32:29.600Z 36.6176 -98.4197 15km WNW of Helena, Oklahoma 4.997 3.6 ml 2017-07-17T21:06:34.200Z 36.4454 -97.0626 25km S of McCord, Oklahoma 5.966 3.3 ml 2017-07-17T03:51:18.700Z 35.8628 -96.6819 12km N of Stroud, Oklahoma 6.806 3.2 ml 2017-07-17T03:29:22.090Z 36.247 -98.4382 4km ESE of Fairview, Oklahoma 2.16 3.2 mb_lg 2017-07-15T23:11:24.290Z 35.8595 -96.6881 12km NNW of Stroud, Oklahoma 3.3 3 mb_lg 2017-07-14T15:11:32.300Z 36.0361 -97.9013 8km S of Hennessey, Oklahoma 4.504 3 ml 2017-07-14T15:04:22.000Z 35.86 -96.6992 12km NNW of Stroud, Oklahoma 5 3.4 ml 2017-07-14T14:17:50.800Z 35.861 -96.6822 12km N of Stroud, Oklahoma 7.052 3.6 mwr 2017-07-14T14:04:50.900Z 35.862 -96.6857 12km N of Stroud, Oklahoma 6.831 3.5 mwr 2017-07-14T13:47:35.300Z 35.8591 -96.6833 12km N of Stroud, Oklahoma 6.813 4.2 mwr 2017-07-13T03:16:56.120Z 36.2834 -97.5074 19km W of Perry, Oklahoma 3.26 3.3 mwr 2017-07-11T17:22:25.610Z 37.2315 -97.972 7km SE of Harper, Kansas 5.16 3.5 ml 2017-07-11T08:37:34.500Z 36.3026 -96.6712 12km ESE of Pawnee, Oklahoma 2.986 3 ml 2017-07-09T08:59:43.140Z 36.1119 -98.7234 23km ENE of Taloga, Oklahoma 5.27 3 mb_lg 2017-07-08T02:51:23.680Z 36.3009 -96.6908 10km ESE of Pawnee, Oklahoma 7.29 3.4 mb_lg 2017-07-06T15:22:11.700Z 36.7659 -97.7631 5km SSW of Medford, Oklahoma 6.031 3.1 mwr 2017-07-01T11:50:26.910Z 36.6789 -98.157 17km NE of Helena, Oklahoma 5 3.1 mb_lg 2017-06-30T22:49:07.410Z 36.0076 -97.2371 7km NNE of Langston, Oklahoma 3.61 3.2 mb_lg 2017-06-29T11:31:54.900Z 36.533 -98.9667 23km ENE of Mooreland, Oklahoma 6.431 3.5 ml 2017-06-27T06:07:54.920Z 36.4723 -97.2848 20km N of Perry, Oklahoma 5 3.3 mb_lg 2017-06-22T12:44:51.170Z 37.2295 -97.9742 7km SE of Harper, Kansas 4.37 3.7 ml 2017-06-20T22:14:57.610Z 37.2747 -98.13 9km W of Harper, Kansas 3.06 3.1 mb_lg 2017-06-19T18:10:57.600Z 35.6176 -96.8946 9km S of Chandler, Oklahoma 5 3 ml 2017-06-17T12:06:27.750Z 35.012 -97.5951 15km SSE of Blanchard, Oklahoma 5.77 3.2 mb_lg 2017-06-15T07:35:15.300Z 36.2848 -97.5067 19km W of Perry, Oklahoma 6.133 3.3 mwr 2017-06-10T07:01:46.360Z 36.4373 -98.7528 30km NW of Fairview, Oklahoma 2.93 3.4 mwr 2017-06-10T06:26:10.890Z 37.2345 -97.9848 6km SSE of Harper, Kansas 3.78 3.7 ml 2017-06-09T12:25:29.300Z 35.6372 -98.0396 11km SSW of Okarche, Oklahoma 6.85 3.2 ml 2017-06-09T12:23:51.200Z 36.6087 -97.7451 22km S of Medford, Oklahoma 6.887 3.1 ml 2017-06-08T03:09:37.100Z 36.871 -98.8188 15km WNW of Alva, Oklahoma 4.202 3.1 mwr 2017-06-07T16:41:18.000Z 36.2274 -98.4308 6km SE of Fairview, Oklahoma 6.153 3.2 mwr 2017-06-07T02:54:34.800Z 36.4584 -98.795 35km NW of Fairview, Oklahoma 5.65 3.1 mwr 2017-06-04T18:08:12.200Z 35.6811 -97.1817 2km NNE of Luther, Oklahoma 4.744 3 ml 2017-06-02T14:02:22.400Z 36.6987 -97.6707 13km SSE of Medford, Oklahoma 5.646 3.1 ml 2017-06-01T21:55:09.700Z 36.4715 -98.7472 32km NW of Fairview, Oklahoma 7.959 3.1 ml 2017-06-01T21:06:08.100Z 36.4569 -98.7903 34km NW of Fairview, Oklahoma 5.108 3.5 ml 2017-06-01T18:26:39.740Z 37.2347 -97.9817 6km SE of Harper, Kansas 4.59 3.6 ml 2017-05-31T23:20:51.700Z 36.4562 -98.7973 35km NW of Fairview, Oklahoma 6.12 3.1 ml 2017-05-31T20:05:29.700Z 36.6999 -98.427 8km SW of Cherokee, Oklahoma 4.867 3.2 ml 2017-05-31T07:03:47.800Z 36.4032 -96.8796 9km NW of Pawnee, Oklahoma 5 3.1 mwr 2017-05-30T23:12:22.800Z 36.2809 -97.5051 19km W of Perry, Oklahoma 6.718 3.8 mwr 2017-05-30T17:50:11.400Z 36.4559 -98.8021 35km NW of Fairview, Oklahoma 6.434 3 ml 2017-05-30T13:57:24.000Z 36.2826 -97.5071 19km W of Perry, Oklahoma 5.525 3.7 mwr 2017-05-30T09:23:14.900Z 36.4575 -98.7966 35km NW of Fairview, Oklahoma 5.855 3 mwr 2017-05-29T01:28:05.500Z 36.2168 -98.9332 19km N of Taloga, Oklahoma 3.001 3.1 ml 2017-05-26T10:48:12.100Z 35.84 -96.6911 10km NNW of Stroud, Oklahoma 6.438 3.1 ml 2017-05-25T16:31:15.700Z 35.2678 -97.8648 5km WSW of Tuttle, Oklahoma 7.208 3.2 ml 2017-05-24T03:47:34.700Z 36.5319 -98.9705 23km ENE of Mooreland, Oklahoma 7.204 3.1 ml 2017-05-21T14:06:15.600Z 35.796 -97.2005 14km N of Luther, Oklahoma 7.058 3.3 mwr 2017-05-20T19:25:17.500Z 35.874 -96.64 13km SSW of Drumright, Oklahoma 5.542 3.1 ml 2017-05-19T07:32:49.590Z 37.235 -97.9828 6km SSE of Harper, Kansas 4.39 3.4 ml 2017-05-19T01:04:05.200Z 36.8677 -98.8225 15km WNW of Alva, Oklahoma 4.355 3.2 ml 2017-05-16T11:29:12.600Z 36.6998 -98.4305 8km SW of Cherokee, Oklahoma 6.904 3.7 ml 2017-05-15T02:46:39.200Z 35.6178 -96.8917 9km S of Chandler, Oklahoma 5 3.2 ml 2017-05-13T21:59:29.400Z 36.6998 -98.4312 9km SW of Cherokee, Oklahoma 5.53 3.2 ml 2017-05-13T13:55:05.200Z 36.4771 -98.7385 32km NW of Fairview, Oklahoma 5.794 3.2 ml 2017-05-13T09:06:47.600Z 36.4801 -98.7407 33km NW of Fairview, Oklahoma 6.439 3 ml 2017-05-13T08:32:37.300Z 36.4782 -98.7365 32km NW of Fairview, Oklahoma 5.367 4.2 mwr 2017-05-13T08:20:49.000Z 36.4617 -98.7521 32km NW of Fairview, Oklahoma 5 3 ml 2017-05-12T17:54:35.300Z 36.4561 -98.7885 34km NW of Fairview, Oklahoma 5.269 3.4 ml 2017-05-12T16:37:04.800Z 36.4562 -98.7888 34km NW of Fairview, Oklahoma 5.832 3.6 ml 2017-05-12T13:15:15.400Z 36.4566 -98.7929 34km NW of Fairview, Oklahoma 5.57 3.2 ml 2017-05-09T14:30:05.100Z 36.6019 -97.6111 25km SSE of Medford, Oklahoma 7.987 3.4 ml Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 8 of 52
Preparer: D. Horne; Date: 02/15/21 Table 2 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Historical Earthquakes in Oklahoma Greater than 3.0 Magnitude (As of February 9, 2021)
Date and Time Latitude Longitude Epicenter Depth (km) Magnitude Mag. Type1 2017-05-07T21:39:53.500Z 36.9197 -98.1299 27km SSW of Anthony, Kansas 7.514 3 ml 2017-05-07T21:08:21.100Z 36.9182 -98.1294 27km SSW of Anthony, Kansas 8.274 3.3 ml 2017-05-07T17:01:14.600Z 36.9202 -98.1295 27km SSW of Anthony, Kansas 9.898 3 ml 2017-05-07T16:52:07.400Z 36.6013 -97.6169 25km SSE of Medford, Oklahoma 6.359 3.2 ml 2017-05-05T11:21:07.600Z 36.2183 -97.5683 26km WSW of Perry, Oklahoma 6.602 3 ml 2017-05-04T23:36:47.950Z 37.2278 -97.8698 15km ESE of Harper, Kansas 4.28 3.7 ml 2017-05-04T23:33:09.000Z 35.7936 -97.1923 14km N of Luther, Oklahoma 5.502 3.1 ml 2017-04-29T09:48:15.500Z 36.6999 -97.6698 13km SSE of Medford, Oklahoma 8.594 3.3 mwr 2017-04-28T01:40:56.500Z 36.4613 -98.7675 33km NW of Fairview, Oklahoma 4.806 3.2 ml 2017-04-28T01:23:47.600Z 35.7991 -96.6522 5km N of Stroud, Oklahoma 7.112 3 ml 2017-04-26T16:29:12.900Z 36.698 -97.6711 13km SSE of Medford, Oklahoma 6.452 3 ml 2017-04-26T00:46:30.600Z 36.4763 -98.7432 32km NW of Fairview, Oklahoma 8.292 3 ml 2017-04-25T20:16:14.700Z 35.5926 -97.3733 7km N of Spencer, Oklahoma 4.606 3.3 ml 2017-04-25T12:40:25.200Z 36.8214 -97.776 4km WNW of Medford, Oklahoma 1.129 3 ml 2017-04-25T07:57:12.100Z 35.5902 -97.3731 7km N of Spencer, Oklahoma 5.187 3 ml 2017-04-24T22:13:34.700Z 36.7908 -98.2712 8km ENE of Cherokee, Oklahoma 3.377 3.3 ml 2017-04-22T14:54:51.500Z 36.7037 -97.6681 12km SSE of Medford, Oklahoma 8.292 3.6 ml 2017-04-22T14:47:22.000Z 36.7033 -97.67 12km SSE of Medford, Oklahoma 6.009 3 ml 2017-04-20T13:38:14.600Z 36.3613 -98.1568 22km SSE of Helena, Oklahoma 4.868 3.2 ml 2017-04-20T04:33:06.500Z 36.7002 -97.6673 13km SSE of Medford, Oklahoma 7.984 3.1 ml 2017-04-18T13:27:30.800Z 36.2082 -97.4265 15km SW of Perry, Oklahoma 8.009 3 ml 2017-04-18T04:36:28.500Z 36.4315 -96.9094 14km NW of Pawnee, Oklahoma 4.183 3 ml 2017-04-16T09:57:04.100Z 36.2071 -97.4255 15km SW of Perry, Oklahoma 6.468 3.1 ml 2017-04-16T06:29:30.500Z 36.2055 -97.4246 15km SW of Perry, Oklahoma 8.094 3.5 ml 2017-04-13T11:32:37.400Z 36.7013 -97.6729 12km SSE of Medford, Oklahoma 8.595 3.1 ml 2017-04-13T10:36:27.900Z 36.7015 -97.6705 12km SSE of Medford, Oklahoma 9.879 3.2 mwr 2017-04-09T22:08:54.600Z 36.919 -98.1266 27km SSW of Anthony, Kansas 8.102 3 ml 2017-04-09T01:47:31.900Z 36.214 -97.014 11km NNE of Stillwater, Oklahoma 7.269 3.4 mwr 2017-04-07T14:56:33.000Z 36.4453 -98.7923 34km NW of Fairview, Oklahoma 6.222 3 ml 2017-04-07T10:13:27.400Z 36.4418 -98.7823 33km NW of Fairview, Oklahoma 7.591 3.1 ml 2017-04-07T08:01:09.500Z 36.5327 -98.971 23km ENE of Mooreland, Oklahoma 6.061 3.2 ml 2017-04-05T19:58:28.000Z 36.419 -96.9144 13km NW of Pawnee, Oklahoma 5.282 3 ml 2017-04-05T08:14:35.700Z 36.5069 -98.238 5km SSE of Helena, Oklahoma 7.572 3.3 ml 2017-04-05T00:09:49.100Z 35.9867 -97.1955 7km NE of Langston, Oklahoma 7.562 3.3 ml 2017-04-04T23:49:52.400Z 35.9885 -97.1934 7km NE of Langston, Oklahoma 7.515 3.5 ml 2017-04-02T08:10:12.300Z 36.8363 -98.2782 11km NE of Cherokee, Oklahoma 5.963 3 ml 2017-03-29T15:37:40.700Z 36.815 -97.6114 10km E of Medford, Oklahoma 2.767 4.1 mwr 2017-03-28T04:25:25.700Z 36.1239 -98.7321 22km ENE of Taloga, Oklahoma 5.552 3 ml 2017-03-25T20:38:44.300Z 36.6835 -97.757 13km S of Medford, Oklahoma 8.301 3.8 mwr 2017-03-25T11:44:13.600Z 36.2746 -97.5636 24km W of Perry, Oklahoma 6.343 3 ml 2017-03-25T11:33:12.400Z 36.2751 -97.5659 25km W of Perry, Oklahoma 6.72 3.1 ml 2017-03-25T11:05:34.400Z 36.2757 -97.5625 24km W of Perry, Oklahoma 7.29 3.6 ml 2017-03-24T16:55:34.900Z 36.137 -97.8224 7km ENE of Hennessey, Oklahoma 5.655 3.6 ml 2017-03-24T04:50:58.400Z 35.7279 -97.1494 8km NNE of Luther, Oklahoma 5.666 3.1 ml 2017-03-22T14:00:09.100Z 35.8537 -96.6512 11km N of Stroud, Oklahoma 4.708 3.7 mwr 2017-03-20T18:47:13.000Z 36.9185 -98.129 27km SSW of Anthony, Kansas 10.186 3.1 ml 2017-03-16T08:57:59.600Z 36.7011 -98.4288 8km SW of Cherokee, Oklahoma 6.118 3.8 ml 2017-03-15T19:14:35.200Z 35.9008 -98.2878 12km ENE of Watonga, Oklahoma 6.871 3.4 ml 2017-03-15T15:16:47.500Z 36.4008 -96.8841 10km NW of Pawnee, Oklahoma 5 3.5 ml 2017-03-15T04:51:56.200Z 36.4185 -98.1339 18km SE of Helena, Oklahoma 7.929 3.1 ml 2017-03-09T23:49:28.120Z 37.073 -97.983 9km SSE of Anthony, Kansas 7.53 3.2 ml 2017-03-08T22:30:20.800Z 36.4918 -98.8963 28km ENE of Mooreland, Oklahoma 5.196 3.8 ml 2017-03-07T20:51:27.400Z 36.4227 -96.9155 13km NW of Pawnee, Oklahoma 5.513 3 ml 2017-03-07T16:06:01.200Z 36.6997 -97.6783 12km SSE of Medford, Oklahoma 8.147 3.2 mwr 2017-03-07T16:03:09.400Z 36.6993 -97.6804 12km SSE of Medford, Oklahoma 7.988 3.3 ml 2017-03-05T12:09:16.200Z 35.8996 -98.2899 12km ENE of Watonga, Oklahoma 5 3.2 ml 2017-03-04T16:08:38.100Z 35.6692 -97.3932 7km ENE of Edmond, Oklahoma 6.825 3 ml 2017-03-03T02:38:27.000Z 36.6646 -99.1271 25km NNE of Mooreland, Oklahoma 5.832 3.3 ml 2017-03-02T20:27:29.000Z 36.5278 -98.9756 22km ENE of Mooreland, Oklahoma 6.208 3.5 ml 2017-03-02T16:43:39.800Z 36.5359 -98.9643 24km ENE of Mooreland, Oklahoma 5.741 3.3 ml 2017-03-02T00:30:40.600Z 35.8428 -96.6459 10km N of Stroud, Oklahoma 5.952 3.3 ml 2017-03-01T19:49:55.300Z 36.4829 -98.763 34km NW of Fairview, Oklahoma 4.768 3.1 ml 2017-03-01T05:25:22.600Z 36.4434 -98.7855 33km NW of Fairview, Oklahoma 7.462 3.4 ml Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 9 of 52
Preparer: D. Horne; Date: 02/15/21 Table 2 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Historical Earthquakes in Oklahoma Greater than 3.0 Magnitude (As of February 9, 2021)
Date and Time Latitude Longitude Epicenter Depth (km) Magnitude Mag. Type1 2017-02-25T17:31:02.000Z 36.2145 -97.5568 25km WSW of Perry, Oklahoma 7.252 3.4 ml 2017-02-24T18:47:20.100Z 36.4876 -97.7636 14km NE of Enid, Oklahoma 7.457 3 ml 2017-02-22T16:31:46.670Z 37.227 -97.9745 8km SE of Harper, Kansas 4.09 3.4 ml 2017-02-22T08:57:35.400Z 36.7675 -97.6396 9km ESE of Medford, Oklahoma 8.799 3.4 ml 2017-02-21T08:05:41.200Z 36.5339 -98.9738 23km ENE of Mooreland, Oklahoma 6.377 3.1 ml 2017-02-16T15:33:07.300Z 36.1266 -96.864 14km W of Yale, Oklahoma 6.207 3.3 mwr 2017-02-13T21:39:58.870Z 37.0653 -97.3763 20km E of Caldwell, Kansas 7.94 3.3 mb_lg 2017-02-12T17:37:24.900Z 36.298 -96.6798 11km ESE of Pawnee, Oklahoma 3.561 3.1 ml 2017-02-12T16:31:50.100Z 37.3633 -98.1158 11km NW of Harper, Kansas 6.35 3.1 mb_lg 2017-02-11T11:12:19.700Z 36.3599 -98.1599 22km SSE of Helena, Oklahoma 7.955 3.1 ml 2017-02-08T22:20:43.410Z 37.0467 -97.3834 19km E of Caldwell, Kansas 3.62 3 mb_lg 2017-02-08T01:18:41.800Z 36.8736 -98.0954 26km ENE of Cherokee, Oklahoma 5.638 3 ml 2017-02-06T20:53:53.700Z 36.4199 -96.8941 12km NW of Pawnee, Oklahoma 6.287 3.4 ml 2017-02-04T11:19:41.900Z 36.8792 -98.0093 25km WNW of Medford, Oklahoma 7.4 3.2 ml 2017-02-03T15:04:12.400Z 36.5297 -98.9761 22km ENE of Mooreland, Oklahoma 5.982 3.2 ml 2017-02-02T01:58:10.300Z 36.29 -97.5072 19km W of Perry, Oklahoma 3.67 3.2 ml 2017-01-31T19:49:39.220Z 36.5369 -98.9758 23km ENE of Mooreland, Oklahoma 10.09 3 mb_lg 2017-01-30T16:55:33.900Z 36.7918 -97.7296 1km SSE of Medford, Oklahoma 7.934 3 ml 2017-01-30T05:34:21.200Z 36.8704 -97.4489 16km WNW of Blackwell, Oklahoma 3.007 3.1 ml 2017-01-29T23:09:00.000Z 36.6995 -98.4304 8km SW of Cherokee, Oklahoma 6.59 3 ml 2017-01-28T03:54:00.300Z 36.1704 -97.2684 13km S of Perry, Oklahoma 7.993 3 ml 2017-01-27T09:51:17.600Z 36.93 -97.6463 11km SSW of Caldwell, Kansas 6.705 3.2 ml 2017-01-26T12:02:32.000Z 36.3863 -97.701 15km E of Enid, Oklahoma 6.054 3.2 ml 2017-01-25T19:44:15.400Z 36.6684 -97.581 20km SE of Medford, Oklahoma 8.292 3 ml 2017-01-25T03:51:31.500Z 36.271 -97.3808 8km WSW of Perry, Oklahoma 7.971 3.1 ml 2017-01-24T20:20:20.700Z 35.6253 -97.1719 4km SSE of Luther, Oklahoma 5 3 ml 2017-01-23T21:21:08.500Z 36.7658 -98.0675 25km E of Cherokee, Oklahoma 6.589 3.1 ml 2017-01-22T08:21:00.500Z 36.4432 -96.9735 19km NW of Pawnee, Oklahoma 3.94 3 ml 2017-01-19T21:30:04.900Z 36.7629 -98.0624 26km E of Cherokee, Oklahoma 7.678 3.3 ml 2017-01-15T05:19:46.900Z 36.4493 -98.7751 33km NW of Fairview, Oklahoma 7.503 3.4 ml 2017-01-11T21:34:27.500Z 36.5297 -98.98 22km ENE of Mooreland, Oklahoma 6.147 3.1 ml 2017-01-10T06:22:29.600Z 36.4174 -98.1347 18km SE of Helena, Oklahoma 5.866 3.3 ml 2017-01-09T20:39:59.900Z 36.7026 -97.6719 12km SSE of Medford, Oklahoma 7.798 3.2 mwr 2017-01-08T02:02:36.900Z 36.9138 -97.5796 13km S of Caldwell, Kansas 6.624 3 ml 2017-01-05T02:55:34.300Z 35.6703 -97.3995 7km ENE of Edmond, Oklahoma 7.069 3.1 ml 2017-01-02T19:44:23.000Z 36.4199 -96.9186 13km NW of Pawnee, Oklahoma 3.044 3.5 ml 2017-01-02T15:28:40.100Z 36.3961 -96.8858 9km NW of Pawnee, Oklahoma 4.241 3.4 ml 2017-01-02T15:25:35.000Z 36.3968 -96.8859 9km NW of Pawnee, Oklahoma 4.152 3.3 ml 2017-01-01T06:43:01.400Z 36.2856 -97.5017 19km W of Perry, Oklahoma 4.179 3 ml 2016-12-30T20:12:44.900Z 36.2667 -97.3454 5km WSW of Perry, Oklahoma 6.352 3.1 ml 2016-12-29T23:18:54.200Z 35.6733 -97.396 7km ENE of Edmond, Oklahoma 5.717 3.2 ml 2016-12-29T23:18:41.700Z 35.6699 -97.3975 7km ENE of Edmond, Oklahoma 6.68 3 ml 2016-12-28T04:14:22.200Z 36.4444 -98.7774 33km NW of Fairview, Oklahoma 5.147 3.4 ml 2016-12-24T04:08:52.300Z 36.3993 -96.8885 10km NW of Pawnee, Oklahoma 4.53 3.6 ml 2016-12-24T02:24:35.300Z 36.5286 -98.9709 23km ENE of Mooreland, Oklahoma 5.56 3 ml 2016-12-23T21:30:59.200Z 36.5311 -98.9679 23km ENE of Mooreland, Oklahoma 4.537 3.4 ml 2016-12-23T20:45:05.300Z 36.5341 -98.9667 23km ENE of Mooreland, Oklahoma 6.012 3.4 ml 2016-12-22T14:46:56.680Z 37.2285 -97.8685 15km ESE of Harper, Kansas 4.45 3.1 ml 2016-12-22T14:21:44.700Z 35.6705 -97.4011 7km ENE of Edmond, Oklahoma 6.842 3.3 ml 2016-12-22T01:58:57.000Z 36.4457 -98.7749 32km NW of Fairview, Oklahoma 6.072 3 ml 2016-12-20T14:03:07.200Z 36.1717 -96.7699 9km NW of Yale, Oklahoma 4.264 3.2 ml 2016-12-20T09:32:19.400Z 34.6053 -96.2282 7km N of Coalgate, Oklahoma 4.796 3.1 ml 2016-12-20T05:03:26.100Z 36.4445 -98.7802 33km NW of Fairview, Oklahoma 7.45 3.5 ml 2016-12-19T08:29:49.300Z 36.5359 -98.9646 24km ENE of Mooreland, Oklahoma 5.638 3.1 ml 2016-12-18T07:46:29.400Z 36.305 -96.6661 12km ESE of Pawnee, Oklahoma 3.032 3 ml 2016-12-18T05:52:59.800Z 35.6707 -97.3981 7km ENE of Edmond, Oklahoma 6.739 3.7 ml 2016-12-18T01:03:20.000Z 36.3957 -97.3251 12km NNW of Perry, Oklahoma 8.009 3.3 ml 2016-12-17T05:04:30.220Z 37.258 -97.8772 13km ESE of Harper, Kansas 4.59 3 ml 2016-12-16T23:06:32.700Z 36.3888 -96.7362 8km NE of Pawnee, Oklahoma 2.75 3.1 ml 2016-12-14T19:12:42.200Z 36.6713 -97.7342 15km S of Medford, Oklahoma 7.968 3.2 ml 2016-12-12T05:08:17.500Z 36.4516 -98.7747 33km NW of Fairview, Oklahoma 8.162 3.2 ml 2016-12-11T11:53:32.500Z 36.284 -97.5081 19km W of Perry, Oklahoma 6.252 3.2 ml 2016-12-10T18:38:34.900Z 36.5356 -98.9725 23km ENE of Mooreland, Oklahoma 6.907 3.2 ml Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 10 of 52
Preparer: D. Horne; Date: 02/15/21 Table 2 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Historical Earthquakes in Oklahoma Greater than 3.0 Magnitude (As of February 9, 2021)
Date and Time Latitude Longitude Epicenter Depth (km) Magnitude Mag. Type1 2016-12-10T08:07:01.400Z 36.3413 -97.9016 6km SSW of Enid, Oklahoma 6.931 3.4 mwr 2016-12-07T17:39:41.500Z 36.2848 -97.5061 19km W of Perry, Oklahoma 7.244 3 ml 2016-12-06T15:41:37.900Z 36.1202 -96.7023 0km NNW of Yale, Oklahoma 5.011 3.2 mwr 2016-12-05T17:39:11.400Z 36.2567 -97.4697 16km WSW of Perry, Oklahoma 8.533 3.3 ml 2016-12-05T08:58:31.000Z 36.0207 -96.7463 4km NNE of Cushing, Oklahoma 4.194 3.2 mwr 2016-12-05T03:22:55.700Z 36.3077 -96.6617 13km ESE of Pawnee, Oklahoma 3.538 3.8 mwr 2016-11-27T14:34:47.000Z 36.7655 -97.5994 12km ESE of Medford, Oklahoma 7.995 3.6 ml 2016-11-25T15:19:35.700Z 36.8434 -97.7522 4km NNW of Medford, Oklahoma 7.893 4 mb 2016-11-24T16:34:06.600Z 35.9931 -96.7981 2km WNW of Cushing, Oklahoma 5.707 3.6 ml 2016-11-24T08:18:29.600Z 36.214 -96.981 12km NNE of Stillwater, Oklahoma 5.202 3.5 ml 2016-11-22T17:07:30.800Z 36.8438 -97.8332 9km WNW of Medford, Oklahoma 5.151 3 ml 2016-11-22T09:55:33.300Z 36.0066 -96.7687 2km N of Cushing, Oklahoma 4.44 3.5 mwr 2016-11-19T11:38:54.100Z 36.4459 -98.7789 33km NW of Fairview, Oklahoma 6.897 3 ml 2016-11-19T03:05:28.900Z 36.443 -98.7831 33km NW of Fairview, Oklahoma 7.323 3 ml 2016-11-15T12:04:46.400Z 36.2936 -96.6869 11km ESE of Pawnee, Oklahoma 3.637 3 ml 2016-11-14T15:07:38.800Z 36.4522 -98.794 34km NW of Fairview, Oklahoma 5.902 3 ml 2016-11-14T14:41:50.900Z 36.3029 -96.6713 12km ESE of Pawnee, Oklahoma 2.843 3.3 ml 2016-11-14T00:30:00.900Z 36.454 -98.7935 34km NW of Fairview, Oklahoma 6.24 3.1 ml 2016-11-12T16:39:41.100Z 35.9886 -96.8065 3km W of Cushing, Oklahoma 6.012 3.3 ml 2016-11-11T15:49:57.000Z 35.6826 -97.0686 11km ENE of Luther, Oklahoma 6.483 3.3 ml 2016-11-11T11:12:36.400Z 36.9461 -97.891 20km NW of Medford, Oklahoma 6.267 3.3 ml 2016-11-11T08:54:43.400Z 35.5734 -98.1395 17km WNW of El Reno, Oklahoma 6.362 3.4 ml 2016-11-11T00:08:05.200Z 35.9862 -96.8103 3km W of Cushing, Oklahoma 5.334 3.1 ml 2016-11-09T02:15:37.000Z 36.9445 -97.8973 21km NW of Medford, Oklahoma 5.943 3.7 mwr 2016-11-08T20:27:05.500Z 36.4163 -97.3526 15km NNW of Perry, Oklahoma 7.081 3.3 ml 2016-11-07T13:43:17.400Z 36.4723 -98.7498 33km NW of Fairview, Oklahoma 7.638 3.3 ml 2016-11-07T08:46:44.300Z 35.4968 -97.3076 1km ENE of Nicoma Park, Oklahoma 6.544 3 ml 2016-11-07T07:33:59.600Z 36.4564 -98.7622 32km NW of Fairview, Oklahoma 7.944 4.1 mb 2016-11-07T04:52:35.670Z 37.3738 -97.735 8km WSW of Conway Springs, Kansas 2.03 3.1 mb_lg 2016-11-07T01:52:32.900Z 36.0062 -96.7679 2km N of Cushing, Oklahoma 5.36 3 ml 2016-11-07T01:44:24.500Z 35.9907 -96.803 3km W of Cushing, Oklahoma 4.43 5 mww 2016-11-06T19:43:07.600Z 36.3665 -97.0732 21km ENE of Perry, Oklahoma 5.898 3 ml 2016-11-06T03:20:43.700Z 36.2505 -97.2196 7km SE of Perry, Oklahoma 7.873 3.4 mwr 2016-11-05T09:39:44.100Z 36.3038 -96.671 12km ESE of Pawnee, Oklahoma 3.919 3.3 mwr 2016-11-04T23:06:44.900Z 36.1495 -97.6595 21km ENE of Hennessey, Oklahoma 5.368 3.3 ml 2016-11-02T15:10:43.700Z 36.3001 -96.6744 12km ESE of Pawnee, Oklahoma 3.914 3.1 ml 2016-11-02T04:26:54.000Z 36.3047 -96.6657 12km ESE of Pawnee, Oklahoma 4.349 4.4 mwr 2016-11-02T00:48:29.100Z 36.1479 -97.6578 22km ENE of Hennessey, Oklahoma 4.489 3 ml 2016-11-02T00:20:59.900Z 35.5673 -98.1261 15km WNW of El Reno, Oklahoma 3.687 3.3 ml 2016-11-02T00:10:05.500Z 35.5692 -98.1286 16km WNW of El Reno, Oklahoma 4.705 3.1 ml 2016-10-31T03:27:03.900Z 36.2856 -97.5073 19km W of Perry, Oklahoma 8.161 3.4 mwr 2016-10-31T02:53:27.700Z 36.4327 -96.9085 14km NW of Pawnee, Oklahoma 4.506 3 ml 2016-10-30T19:26:46.400Z 36.251 -97.2213 7km SE of Perry, Oklahoma 7.978 3.3 ml 2016-10-30T10:21:02.200Z 36.3126 -97.0419 21km N of Stillwater, Oklahoma 6.788 3.4 mwr 2016-10-29T11:50:23.300Z 36.5715 -97.3821 13km SSW of Tonkawa, Oklahoma 8.244 3.2 ml 2016-10-29T11:44:53.500Z 36.5707 -97.3888 13km SSW of Tonkawa, Oklahoma 6.3 3.1 ml 2016-10-29T06:06:01.800Z 36.4008 -96.8854 10km NW of Pawnee, Oklahoma 4.57 3.3 ml 2016-10-28T18:24:54.700Z 36.4387 -96.8916 13km NW of Pawnee, Oklahoma 4.542 3.1 ml 2016-10-28T15:50:39.600Z 36.7584 -98.0587 26km E of Cherokee, Oklahoma 7.412 3 ml 2016-10-27T06:08:39.000Z 35.6579 -97.1556 3km E of Luther, Oklahoma 5.701 3.6 ml 2016-10-26T06:19:03.500Z 36.3315 -97.5195 21km WNW of Perry, Oklahoma 7.988 3.5 ml 2016-10-24T13:25:55.020Z 37.1583 -97.8237 18km E of Anthony, Kansas 4.78 3.5 ml 2016-10-24T00:33:34.200Z 36.8173 -97.5462 16km E of Medford, Oklahoma 7.951 3.3 ml 2016-10-22T13:03:13.800Z 36.6502 -99.0777 26km NNE of Mooreland, Oklahoma 4.666 3.1 ml 2016-10-21T22:54:31.700Z 36.4427 -98.7844 33km NW of Fairview, Oklahoma 7.334 3.2 ml 2016-10-21T22:48:18.300Z 36.4439 -98.7815 33km NW of Fairview, Oklahoma 7.321 3 ml 2016-10-21T20:47:39.400Z 36.4449 -98.779 33km NW of Fairview, Oklahoma 7.396 3.4 mwr 2016-10-21T20:33:56.700Z 36.4507 -98.7752 33km NW of Fairview, Oklahoma 7.346 3.1 ml 2016-10-21T20:26:00.500Z 36.4493 -98.7758 33km NW of Fairview, Oklahoma 7.081 4 mwr 2016-10-21T20:25:35.780Z 36.4642 -98.3036 9km SSW of Helena, Oklahoma 5 3.8 mb_lg 2016-10-20T17:09:07.900Z 35.8445 -97.372 6km SE of Guthrie, Oklahoma 6.061 3 ml 2016-10-20T12:14:07.900Z 36.9295 -97.644 11km SSW of Caldwell, Kansas 5.448 3.4 mwr 2016-10-19T22:54:14.000Z 36.4793 -98.7937 36km NW of Fairview, Oklahoma 5.263 3.1 ml Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 11 of 52
Preparer: D. Horne; Date: 02/15/21 Table 2 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Historical Earthquakes in Oklahoma Greater than 3.0 Magnitude (As of February 9, 2021)
Date and Time Latitude Longitude Epicenter Depth (km) Magnitude Mag. Type1 2016-10-19T22:33:35.100Z 36.7643 -97.7671 5km SSW of Medford, Oklahoma 7.977 3.1 mwr 2016-10-19T12:04:51.500Z 36.4144 -96.8699 10km NW of Pawnee, Oklahoma 5.117 3 ml 2016-10-19T07:06:29.400Z 36.5225 -98.3547 8km WSW of Helena, Oklahoma 6.587 3.1 ml 2016-10-18T04:04:41.170Z 35.6617 -97.4002 7km E of Edmond, Oklahoma 4.55 3 mb_lg 2016-10-17T18:56:54.600Z 35.8678 -96.6821 13km N of Stroud, Oklahoma 6.635 3 ml 2016-10-15T14:11:20.200Z 36.3744 -97.7133 14km E of Enid, Oklahoma 4.967 3.1 ml 2016-10-14T11:50:31.300Z 36.5091 -99.0685 14km ENE of Mooreland, Oklahoma 5.916 3.2 ml 2016-10-13T02:48:41.500Z 36.7911 -98.3328 4km NNE of Cherokee, Oklahoma 6.164 3.3 mwr 2016-10-10T21:55:10.000Z 36.4184 -98.1409 18km SE of Helena, Oklahoma 7.943 3 ml 2016-10-10T20:27:55.000Z 36.4362 -96.9028 14km NW of Pawnee, Oklahoma 3.839 3.2 ml 2016-10-10T15:44:10.800Z 36.4474 -98.7783 33km NW of Fairview, Oklahoma 7.864 3 ml 2016-10-09T20:07:22.800Z 36.5057 -99.066 14km ENE of Mooreland, Oklahoma 5.663 3 ml 2016-10-09T12:23:05.100Z 36.4171 -96.8917 11km NW of Pawnee, Oklahoma 4.466 3.5 mwr 2016-10-08T11:10:29.400Z 36.4516 -98.7704 33km NW of Fairview, Oklahoma 7.995 3.3 ml 2016-10-06T10:53:18.400Z 36.8215 -97.5453 16km E of Medford, Oklahoma 9.012 3.6 ml 2016-10-06T00:19:04.000Z 36.4197 -96.9174 13km NW of Pawnee, Oklahoma 4.167 3.4 ml 2016-10-05T16:45:59.100Z 36.4447 -98.7825 33km NW of Fairview, Oklahoma 7.707 3.2 ml 2016-10-05T16:01:08.300Z 35.8637 -96.6823 12km N of Stroud, Oklahoma 5.947 3 ml 2016-10-05T15:02:26.400Z 36.445 -98.7781 33km NW of Fairview, Oklahoma 7.231 3.3 mwr 2016-10-05T13:46:10.500Z 36.4608 -99.1555 5km ENE of Mooreland, Oklahoma 4.079 3 ml 2016-10-05T09:54:33.100Z 36.4065 -96.938 14km WNW of Pawnee, Oklahoma 5.796 3 ml 2016-10-04T13:10:44.400Z 35.8633 -96.6822 12km N of Stroud, Oklahoma 5.868 3.3 ml 2016-10-04T09:10:37.900Z 36.4275 -96.9394 15km NW of Pawnee, Oklahoma 5.76 3.7 ml 2016-10-02T03:51:09.900Z 36.2139 -97.5672 26km WSW of Perry, Oklahoma 6.321 3.2 ml 2016-09-30T05:45:36.100Z 36.5034 -99.0645 14km ENE of Mooreland, Oklahoma 6.418 3.3 ml 2016-09-29T18:08:35.200Z 36.2779 -98.4064 6km E of Fairview, Oklahoma 5.754 3.1 mwr 2016-09-29T06:24:55.000Z 36.3761 -96.94 12km WNW of Pawnee, Oklahoma 5.926 3.1 ml 2016-09-27T06:09:59.810Z 36.5093 -97.2556 19km SSE of Tonkawa, Oklahoma 2.15 3 mb_lg 2016-09-26T23:30:51.600Z 36.8174 -98.2727 10km NE of Cherokee, Oklahoma 6.764 3.8 ml 2016-09-26T15:47:03.300Z 36.0912 -97.4441 20km NE of Crescent, Oklahoma 6.995 3.4 ml 2016-09-24T22:41:29.400Z 35.9798 -97.1997 6km NE of Langston, Oklahoma 5.816 3.3 mwr 2016-09-23T08:28:17.800Z 36.42 -96.906 12km NW of Pawnee, Oklahoma 3.3 3 ml 2016-09-21T06:18:48.200Z 35.8531 -97.2346 10km S of Langston, Oklahoma 6.159 3.2 mwr 2016-09-20T18:40:07.500Z 36.9344 -97.9058 20km NW of Medford, Oklahoma 5.562 3.1 ml 2016-09-20T04:59:10.800Z 36.9375 -97.906 21km NW of Medford, Oklahoma 5.295 3.9 mwr 2016-09-18T18:30:34.600Z 36.281 -97.5116 20km W of Perry, Oklahoma 6.939 3.2 ml 2016-09-17T06:18:53.300Z 36.7021 -97.7395 11km S of Medford, Oklahoma 6.358 3 ml 2016-09-17T06:08:07.700Z 36.8673 -98.3474 12km N of Cherokee, Oklahoma 5.564 3.5 ml 2016-09-16T23:55:33.300Z 36.4595 -98.759 32km NW of Fairview, Oklahoma 7.683 3.9 ml 2016-09-16T18:01:28.000Z 36.7824 -98.561 9km ESE of Alva, Oklahoma 5 3 ml 2016-09-14T22:43:57.200Z 35.6691 -97.4022 7km ENE of Edmond, Oklahoma 7.304 3.2 ml 2016-09-14T17:13:44.900Z 36.451 -98.7703 32km NW of Fairview, Oklahoma 7.783 3.7 mwr 2016-09-13T17:45:18.200Z 36.7819 -97.8178 8km WSW of Medford, Oklahoma 6.784 3.3 ml 2016-09-13T16:18:00.580Z 37.3628 -98.0942 10km NW of Harper, Kansas 8.44 3.3 ml 2016-09-13T15:09:14.400Z 36.7791 -97.8203 8km WSW of Medford, Oklahoma 5.781 3 ml 2016-09-13T02:15:21.300Z 36.2466 -98.4464 3km SE of Fairview, Oklahoma 6.105 3.7 ml 2016-09-13T02:05:48.200Z 36.2452 -98.4476 3km SE of Fairview, Oklahoma 6.022 3.3 mwr 2016-09-12T21:39:14.500Z 36.4316 -96.9089 14km NW of Pawnee, Oklahoma 4.376 3 ml 2016-09-12T05:54:12.700Z 36.4068 -96.8542 8km NNW of Pawnee, Oklahoma 5.267 3 ml 2016-09-10T11:38:25.700Z 35.8799 -97.1226 13km SW of Perkins, Oklahoma 4.673 3.2 ml 2016-09-09T22:51:28.210Z 36.0947 -96.7449 4km WSW of Yale, Oklahoma 5 3.1 mb_lg 2016-09-09T22:35:35.200Z 36.7216 -98.3926 4km SW of Cherokee, Oklahoma 4.121 3 ml 2016-09-09T17:31:40.900Z 36.3163 -96.9678 14km W of Pawnee, Oklahoma 6.846 3.7 ml 2016-09-09T02:06:29.100Z 35.5166 -97.3974 1km WSW of Spencer, Oklahoma 7.481 3.5 mwr 2016-09-09T00:21:33.200Z 36.3955 -97.2956 11km N of Perry, Oklahoma 6.527 3 ml 2016-09-08T21:38:43.400Z 36.1683 -97.048 5km N of Stillwater, Oklahoma 6.014 3.1 ml 2016-09-08T21:34:43.100Z 36.1674 -97.0459 5km N of Stillwater, Oklahoma 5.942 3.2 ml 2016-09-08T21:29:29.000Z 36.286 -97.5077 19km W of Perry, Oklahoma 5.131 3.3 mwr 2016-09-07T21:04:24.900Z 36.9445 -97.9005 21km NW of Medford, Oklahoma 4.378 3.3 ml 2016-09-07T02:26:50.500Z 36.4326 -96.908 14km NW of Pawnee, Oklahoma 4.444 3.1 mwr 2016-09-06T18:33:49.200Z 36.9371 -97.9073 21km NW of Medford, Oklahoma 4.881 3.5 ml 2016-09-06T17:49:45.040Z 36.9241 -97.9341 22km NW of Medford, Oklahoma 9.53 3.7 mb_lg 2016-09-06T17:48:34.200Z 36.9372 -97.9125 21km NW of Medford, Oklahoma 4.448 3.9 mwr Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 12 of 52
Preparer: D. Horne; Date: 02/15/21 Table 2 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Historical Earthquakes in Oklahoma Greater than 3.0 Magnitude (As of February 9, 2021)
Date and Time Latitude Longitude Epicenter Depth (km) Magnitude Mag. Type1 2016-09-05T21:15:46.200Z 36.3557 -97.4312 14km WNW of Perry, Oklahoma 5 3.1 ml 2016-09-04T20:03:06.900Z 36.038 -96.7809 6km NNW of Cushing, Oklahoma 5.06 3.1 ml 2016-09-04T14:29:23.100Z 36.4299 -96.9211 14km NW of Pawnee, Oklahoma 8.137 3 ml 2016-09-04T12:56:04.900Z 36.4124 -96.8891 11km NW of Pawnee, Oklahoma 1.47 3 ml 2016-09-04T04:20:28.000Z 36.3195 -96.965 14km W of Pawnee, Oklahoma 5.972 3.2 ml 2016-09-04T03:55:46.400Z 36.0387 -96.7784 6km N of Cushing, Oklahoma 5.159 3.2 ml 2016-09-04T03:15:56.400Z 36.4155 -96.8844 11km NW of Pawnee, Oklahoma 3.551 3.1 ml 2016-09-03T23:56:36.600Z 36.4148 -96.8557 9km NNW of Pawnee, Oklahoma 8.275 3 ml 2016-09-03T20:50:24.700Z 36.3118 -96.9725 15km W of Pawnee, Oklahoma 5.254 3 ml 2016-09-03T18:38:51.900Z 36.2137 -97.5725 26km WSW of Perry, Oklahoma 6.32 3 ml 2016-09-03T15:31:40.900Z 36.4187 -96.8838 11km NW of Pawnee, Oklahoma 6.47 3.4 ml 2016-09-03T14:47:04.200Z 36.4141 -96.8589 9km NNW of Pawnee, Oklahoma 8.304 3.3 ml 2016-09-03T12:58:37.800Z 36.4233 -96.9093 13km NW of Pawnee, Oklahoma 6.162 3.6 ml 2016-09-03T12:16:22.200Z 36.4148 -96.8522 9km NNW of Pawnee, Oklahoma 7.99 3.3 ml 2016-09-03T12:02:44.400Z 36.4251 -96.9291 14km NW of Pawnee, Oklahoma 5.557 5.8 mww 2016-09-03T02:39:52.800Z 35.6566 -97.1511 4km E of Luther, Oklahoma 5.522 3.4 ml 2016-09-03T01:45:07.600Z 36.8523 -97.6967 6km NNE of Medford, Oklahoma 6.897 3.4 ml 2016-09-01T11:46:33.700Z 36.4395 -96.899 14km NW of Pawnee, Oklahoma 3.157 3 ml 2016-09-01T06:25:19.100Z 36.4848 -98.6026 26km NNW of Fairview, Oklahoma 6.563 3.2 ml 2016-09-01T02:19:51.020Z 37.0553 -97.5368 6km ENE of Caldwell, Kansas 5.6 3.1 ml 2016-08-31T03:24:22.900Z 36.5266 -97.8801 14km N of Enid, Oklahoma 6.134 3.3 ml 2016-08-30T18:56:40.600Z 36.6502 -97.7088 17km S of Medford, Oklahoma 7.254 3.1 ml 2016-08-30T08:24:55.300Z 36.9382 -97.9103 21km NW of Medford, Oklahoma 4.544 3 ml 2016-08-30T04:03:12.200Z 35.977 -97.2023 5km NE of Langston, Oklahoma 6.383 3.1 ml 2016-08-29T17:55:37.300Z 36.2152 -97.5665 26km WSW of Perry, Oklahoma 5.839 3 ml 2016-08-29T17:53:52.200Z 36.2144 -97.5752 27km WSW of Perry, Oklahoma 6.221 3.6 ml 2016-08-27T08:16:08.100Z 36.3742 -97.7229 14km E of Enid, Oklahoma 6.146 3.6 mwr 2016-08-24T10:08:56.100Z 36.0709 -96.7515 6km SW of Yale, Oklahoma 3.708 3.3 ml 2016-08-20T02:32:06.500Z 36.5358 -98.9594 24km ENE of Mooreland, Oklahoma 5.526 3.2 ml 2016-08-19T10:40:43.980Z 37.5673 -97.8095 7km SSW of Cheney, Kansas 1.52 3.5 mb_lg 2016-08-17T13:34:28.700Z 35.6775 -97.0794 10km E of Luther, Oklahoma 6.055 4 mwr 2016-08-17T02:39:05.800Z 36.2476 -98.4451 3km SE of Fairview, Oklahoma 6.075 3.3 mwr 2016-08-16T17:48:26.400Z 36.5139 -97.2135 20km SSE of Tonkawa, Oklahoma 6.343 3.1 ml 2016-08-16T06:08:14.400Z 35.6569 -97.1528 3km E of Luther, Oklahoma 5.725 3.3 mwr 2016-08-15T12:16:49.800Z 36.765 -97.6027 12km ESE of Medford, Oklahoma 7.168 3 ml 2016-08-15T11:12:14.900Z 36.4167 -97.3581 15km NNW of Perry, Oklahoma 7.596 3.1 ml 2016-08-14T12:22:21.900Z 36.8167 -97.6227 9km E of Medford, Oklahoma 6.603 3.5 ml 2016-08-14T03:22:55.500Z 36.6599 -98.0868 20km NE of Helena, Oklahoma 6.637 3.1 ml 2016-08-12T09:04:56.000Z 36.416 -97.3574 15km NNW of Perry, Oklahoma 7.355 3.1 ml 2016-08-12T05:27:10.400Z 36.6602 -98.0867 20km NE of Helena, Oklahoma 6.419 3.6 mwr 2016-08-10T16:34:53.800Z 35.6613 -97.1824 1km E of Luther, Oklahoma 5.246 3.5 ml 2016-08-10T11:04:49.500Z 35.6619 -97.1815 1km E of Luther, Oklahoma 5.429 3.6 mwr 2016-08-10T06:36:53.300Z 36.2138 -97.5587 25km WSW of Perry, Oklahoma 5.041 3.2 ml 2016-08-09T21:54:26.100Z 36.2137 -97.5688 26km WSW of Perry, Oklahoma 6.444 3.2 mwr 2016-08-09T21:46:41.400Z 36.211 -97.57 26km WSW of Perry, Oklahoma 6.6 3.9 mwr 2016-08-09T21:46:34.300Z 36.211 -97.575 27km WSW of Perry, Oklahoma 6.9 3.6 mb 2016-08-09T14:32:19.300Z 36.2842 -97.5094 19km W of Perry, Oklahoma 7.187 3.1 ml 2016-08-07T09:13:53.700Z 36.1772 -97.415 16km SW of Perry, Oklahoma 6.424 3 ml 2016-08-07T01:45:44.400Z 36.4874 -98.4942 21km WSW of Helena, Oklahoma 9.162 3.3 ml 2016-08-05T13:43:12.100Z 36.7108 -98.1088 22km ESE of Cherokee, Oklahoma 6.526 3.2 ml 2016-08-05T06:59:51.500Z 36.7598 -98.0742 25km E of Cherokee, Oklahoma 6.409 3 ml 2016-08-05T00:13:07.200Z 36.4682 -98.7508 32km NW of Fairview, Oklahoma 8.274 3.4 ml 2016-07-31T17:26:30.890Z 35.0752 -97.572 10km SE of Blanchard, Oklahoma 5.83 3.1 mb_lg 2016-07-29T01:35:18.000Z 36.2168 -97.5742 26km WSW of Perry, Oklahoma 4.725 3.6 mwr 2016-07-24T23:36:06.900Z 36.4513 -98.7711 33km NW of Fairview, Oklahoma 7.745 3.1 ml 2016-07-24T08:09:07.000Z 36.1281 -97.0977 3km WNW of Stillwater, Oklahoma 5.922 3 ml 2016-07-22T22:21:42.600Z 36.5866 -98.5431 24km SW of Cherokee, Oklahoma 7.43 3.4 ml 2016-07-22T13:16:55.600Z 36.7926 -97.5467 16km E of Medford, Oklahoma 7.003 3.1 ml 2016-07-21T21:33:30.900Z 36.3548 -97.0908 19km ENE of Perry, Oklahoma 10.354 3.6 ml 2016-07-19T16:12:30.000Z 36.2871 -97.511 20km W of Perry, Oklahoma 5.305 3.2 ml 2016-07-19T00:39:03.700Z 36.8213 -97.6153 10km E of Medford, Oklahoma 6.924 3.4 ml 2016-07-18T18:54:34.000Z 36.0242 -97.5168 10km NE of Crescent, Oklahoma 5.732 3.2 ml 2016-07-17T08:04:46.900Z 36.2868 -97.5052 19km W of Perry, Oklahoma 5.898 3.1 ml Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 13 of 52
Preparer: D. Horne; Date: 02/15/21 Table 2 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Historical Earthquakes in Oklahoma Greater than 3.0 Magnitude (As of February 9, 2021)
Date and Time Latitude Longitude Epicenter Depth (km) Magnitude Mag. Type1 2016-07-17T04:22:40.700Z 36.2858 -97.5121 20km W of Perry, Oklahoma 6.244 3.5 ml 2016-07-17T04:17:58.900Z 36.2841 -97.5138 20km W of Perry, Oklahoma 4.787 4.2 mwr 2016-07-16T16:21:44.900Z 36.8871 -97.3216 9km NNW of Blackwell, Oklahoma 7.801 3 ml 2016-07-16T11:47:58.800Z 35.9131 -97.3483 7km ENE of Guthrie, Oklahoma 4.872 3.1 ml 2016-07-15T00:00:01.200Z 36.3425 -97.6722 19km ESE of Enid, Oklahoma 6.149 3 ml 2016-07-14T05:52:49.900Z 35.4769 -97.3543 3km WSW of Nicoma Park, Oklahoma 6.824 3.4 ml 2016-07-13T21:19:16.900Z 36.6758 -98.2662 11km SE of Cherokee, Oklahoma 7.132 3.2 ml 2016-07-13T18:04:39.400Z 36.8423 -98.241 14km NE of Cherokee, Oklahoma 3.513 3 ml 2016-07-13T15:00:29.200Z 36.5402 -98.6728 29km S of Alva, Oklahoma 4.494 3 mwr 2016-07-11T20:28:57.700Z 35.9767 -97.1863 7km ENE of Langston, Oklahoma 5.816 3.1 ml 2016-07-09T23:34:32.200Z 35.8041 -97.2429 15km S of Langston, Oklahoma 6.53 3.1 ml 2016-07-09T21:40:14.700Z 36.4801 -98.7348 32km NW of Fairview, Oklahoma 7.593 3.4 ml 2016-07-09T21:21:22.400Z 36.733 -98.748 10km SW of Alva, Oklahoma 6.868 3 ml 2016-07-09T16:20:23.000Z 35.9787 -97.2015 6km NE of Langston, Oklahoma 5 3.6 ml 2016-07-09T09:08:59.900Z 36.708 -98.1095 22km ESE of Cherokee, Oklahoma 6.004 3 ml 2016-07-09T07:10:38.600Z 36.328 -97.5128 20km WNW of Perry, Oklahoma 7.417 3 ml 2016-07-09T04:19:26.600Z 36.4574 -98.7699 33km NW of Fairview, Oklahoma 6.526 3.3 ml 2016-07-09T02:51:15.100Z 36.4552 -98.767 33km NW of Fairview, Oklahoma 7.616 3.4 ml 2016-07-09T02:21:34.100Z 36.4533 -98.7692 33km NW of Fairview, Oklahoma 7.913 3.1 ml 2016-07-09T02:04:27.400Z 36.4638 -98.7584 33km NW of Fairview, Oklahoma 7.242 4.4 mwr 2016-07-09T01:01:29.700Z 36.4766 -98.7449 33km NW of Fairview, Oklahoma 5.949 3.1 ml 2016-07-08T23:27:12.200Z 36.4841 -98.7435 33km NW of Fairview, Oklahoma 6.701 3.1 ml 2016-07-08T22:29:38.000Z 36.4749 -98.7459 33km NW of Fairview, Oklahoma 6.356 4.2 mwr 2016-07-08T21:31:57.600Z 36.4765 -98.7387 32km NW of Fairview, Oklahoma 7.315 4.2 mwr 2016-07-08T19:06:18.400Z 35.059 -97.6064 9km SSE of Blanchard, Oklahoma 5.875 3.4 ml 2016-07-05T20:17:15.100Z 37.3553 -98.1952 16km WNW of Harper, Kansas 5 3.5 mb_lg 2016-07-05T17:21:57.400Z 36.2713 -97.5711 25km W of Perry, Oklahoma 6.408 3.2 mwr 2016-07-05T04:58:53.600Z 35.851 -97.233 10km S of Langston, Oklahoma 6.549 3 ml 2016-07-04T21:01:44.100Z 35.8512 -97.2321 10km SSE of Langston, Oklahoma 5.947 3 ml 2016-07-03T17:32:15.800Z 36.1594 -96.7365 6km NNW of Yale, Oklahoma 5.399 3.4 ml 2016-07-02T12:10:14.700Z 36.8177 -97.6184 10km E of Medford, Oklahoma 6.147 3.4 ml 2016-07-02T06:22:56.070Z 37.3709 -98.0114 9km N of Harper, Kansas 6.59 3.3 mb_lg 2016-07-02T05:04:53.300Z 36.8181 -97.6178 10km E of Medford, Oklahoma 6.022 3.2 ml 2016-07-01T07:26:15.100Z 36.2813 -97.5159 20km W of Perry, Oklahoma 7.135 3.3 ml 2016-06-30T22:25:03.700Z 36.4771 -98.7412 32km NW of Fairview, Oklahoma 7.694 3.5 mwr 2016-06-29T14:15:16.900Z 35.0083 -97.795 13km ESE of Chickasha, Oklahoma 5.445 3 ml 2016-06-29T07:59:05.700Z 36.2842 -97.5126 20km W of Perry, Oklahoma 7.412 3.3 ml 2016-06-28T19:57:56.000Z 35.8562 -97.2272 10km SSE of Langston, Oklahoma 5.641 3.6 mwr 2016-06-28T19:26:25.200Z 36.4736 -98.7464 31km NW of Fairview, Oklahoma 6.961 3.2 ml 2016-06-28T03:25:08.000Z 36.7011 -98.6607 11km S of Alva, Oklahoma 5.341 3.4 mwr 2016-06-28T02:50:10.900Z 36.5058 -99.0562 15km ENE of Mooreland, Oklahoma 5.883 3.1 ml 2016-06-26T19:48:54.800Z 36.0852 -97.6761 16km NNW of Crescent, Oklahoma 5.686 3 ml 2016-06-26T18:35:34.680Z 37.354 -98.2036 17km WNW of Harper, Kansas 5 3.4 mb_lg 2016-06-25T18:03:22.440Z 37.0103 -97.558 4km ESE of Caldwell, Kansas 5.3 3.1 ml 2016-06-25T10:30:35.800Z 36.5024 -99.0565 15km ENE of Mooreland, Oklahoma 5.203 3.4 mwr 2016-06-25T04:34:53.100Z 36.213 -97.5668 26km WSW of Perry, Oklahoma 6.216 3.3 ml 2016-06-23T20:42:02.900Z 36.5335 -98.964 23km ENE of Mooreland, Oklahoma 6.114 3 ml 2016-06-23T11:35:02.500Z 36.4754 -98.7434 32km NW of Fairview, Oklahoma 7.987 3 ml 2016-06-22T09:50:49.700Z 36.6763 -98.7738 17km SW of Alva, Oklahoma 6.354 3.3 ml 2016-06-21T17:07:45.800Z 36.5073 -98.4792 19km WSW of Helena, Oklahoma 4.605 3.5 ml 2016-06-21T01:13:53.500Z 36.4534 -98.7719 33km NW of Fairview, Oklahoma 7.697 3.1 ml 2016-06-21T00:10:30.400Z 36.4512 -98.7708 33km NW of Fairview, Oklahoma 7.427 3.3 ml 2016-06-20T08:50:46.100Z 36.452 -98.7703 33km NW of Fairview, Oklahoma 7.027 3.4 mwr 2016-06-19T16:31:54.700Z 36.8826 -97.3209 9km NNW of Blackwell, Oklahoma 7.201 3 ml 2016-06-19T01:34:57.800Z 36.5871 -98.5399 24km SW of Cherokee, Oklahoma 6.257 3.3 ml 2016-06-18T21:33:15.000Z 35.5322 -97.1115 6km NE of Harrah, Oklahoma 6.601 3.6 ml 2016-06-18T16:05:56.100Z 35.8028 -97.2487 15km S of Langston, Oklahoma 5.993 3.2 ml 2016-06-17T05:09:14.900Z 35.6719 -97.4088 6km ENE of Edmond, Oklahoma 6.048 3.1 ml 2016-06-16T06:15:04.100Z 36.3757 -97.7204 14km E of Enid, Oklahoma 4.825 3 ml 2016-06-15T21:08:01.600Z 36.2186 -97.2848 7km S of Perry, Oklahoma 6.429 3.1 ml 2016-06-15T16:28:24.000Z 36.7211 -98.7324 11km SSW of Alva, Oklahoma 6.661 3 ml 2016-06-15T15:43:53.200Z 36.484 -99.0981 10km ENE of Mooreland, Oklahoma 5.725 3.3 ml 2016-06-15T14:36:28.400Z 36.7233 -98.7296 10km SSW of Alva, Oklahoma 6.117 3.3 ml Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 14 of 52
Preparer: D. Horne; Date: 02/15/21 Table 2 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Historical Earthquakes in Oklahoma Greater than 3.0 Magnitude (As of February 9, 2021)
Date and Time Latitude Longitude Epicenter Depth (km) Magnitude Mag. Type1 2016-06-15T14:30:57.500Z 36.7209 -98.7302 10km SSW of Alva, Oklahoma 6.725 3 ml 2016-06-14T06:33:30.200Z 36.6164 -98.4256 15km WNW of Helena, Oklahoma 6.115 3.1 ml 2016-06-14T02:55:29.400Z 36.2196 -97.2844 7km S of Perry, Oklahoma 7.059 3 ml 2016-06-13T11:52:08.600Z 36.4531 -98.7805 33km NW of Fairview, Oklahoma 5.875 3.2 ml 2016-06-12T19:44:33.500Z 35.8551 -97.2309 10km SSE of Langston, Oklahoma 5.983 3 ml 2016-06-12T10:15:25.500Z 35.8575 -97.2246 10km SSE of Langston, Oklahoma 5.951 3.1 ml 2016-06-11T07:27:02.440Z 37.2038 -97.7357 22km SSW of Conway Springs, Kansas 7.75 3.2 mwr 2016-06-11T01:17:18.500Z 36.4887 -98.7261 32km NW of Fairview, Oklahoma 7.265 3.5 ml 2016-06-09T21:58:36.300Z 36.2863 -97.5135 20km W of Perry, Oklahoma 6.897 3.6 ml 2016-06-09T11:15:28.400Z 36.6032 -97.6141 25km SSE of Medford, Oklahoma 6.567 3.3 ml 2016-06-09T08:02:02.100Z 36.4482 -98.7801 33km NW of Fairview, Oklahoma 6.983 3.4 mwr 2016-06-08T16:50:41.700Z 36.4428 -96.8883 13km NNW of Pawnee, Oklahoma 6.632 3.9 ml 2016-06-07T16:54:37.400Z 35.6623 -97.4245 4km ENE of Edmond, Oklahoma 5.869 3.2 ml 2016-06-06T19:59:38.400Z 36.6697 -97.7414 15km S of Medford, Oklahoma 7.109 3 ml 2016-06-06T18:54:51.000Z 36.2534 -96.7622 10km SSE of Pawnee, Oklahoma 5 3.2 mwr 2016-06-06T18:52:16.600Z 36.4268 -96.9184 14km NW of Pawnee, Oklahoma 8.602 3.3 mwr 2016-06-06T14:49:49.300Z 36.3744 -97.725 13km E of Enid, Oklahoma 6.369 3.2 ml 2016-06-06T00:35:33.100Z 35.5773 -97.2849 1km N of Jones, Oklahoma 6.123 3.3 mwr 2016-06-05T17:08:17.840Z 37.1898 -97.9905 5km NE of Anthony, Kansas 5.15 3.4 ml 2016-06-04T04:43:27.000Z 36.535 -98.9641 24km ENE of Mooreland, Oklahoma 6.111 3.1 ml 2016-06-04T01:47:08.100Z 36.2686 -97.5731 25km W of Perry, Oklahoma 5.331 3.2 ml 2016-06-02T18:03:21.300Z 36.4166 -98.1423 18km SE of Helena, Oklahoma 6.894 3.2 ml 2016-06-02T01:28:54.900Z 36.3756 -97.7246 13km E of Enid, Oklahoma 6.388 3.4 ml 2016-06-01T18:13:18.290Z 37.1913 -97.9893 5km NE of Anthony, Kansas 4.99 3.1 ml 2016-06-01T06:20:56.500Z 36.8911 -97.3867 13km NW of Blackwell, Oklahoma 8.157 3.2 ml 2016-05-31T10:54:09.400Z 35.6541 -97.1549 3km ESE of Luther, Oklahoma 5.648 3.3 ml 2016-05-29T02:47:19.200Z 36.0815 -97.3095 15km NNW of Langston, Oklahoma 5.871 3.5 ml 2016-05-28T04:59:30.500Z 36.1819 -96.9694 10km NE of Stillwater, Oklahoma 6.292 3 ml 2016-05-27T01:26:34.900Z 36.4659 -98.7583 33km NW of Fairview, Oklahoma 6.916 3.2 ml 2016-05-26T01:21:26.500Z 35.7256 -97.1637 7km NNE of Luther, Oklahoma 5.581 3.3 ml 2016-05-25T06:09:59.500Z 36.4571 -98.7663 33km NW of Fairview, Oklahoma 7.265 3.2 ml 2016-05-23T01:24:17.400Z 35.9781 -97.2001 6km NE of Langston, Oklahoma 5.018 3.1 ml 2016-05-23T00:22:57.400Z 35.9784 -97.2001 6km NE of Langston, Oklahoma 5.168 3 ml 2016-05-22T12:00:46.000Z 36.3749 -97.7227 14km E of Enid, Oklahoma 6.118 3.2 mwr 2016-05-21T14:46:06.100Z 36.5469 -97.0688 14km S of McCord, Oklahoma 5.229 3.2 ml 2016-05-20T05:41:04.700Z 36.4821 -98.7473 33km NW of Fairview, Oklahoma 5.783 3 ml 2016-05-20T02:16:03.900Z 36.4731 -98.7452 32km NW of Fairview, Oklahoma 7.72 3.6 ml 2016-05-19T21:17:08.500Z 35.8572 -97.2254 10km SSE of Langston, Oklahoma 5.848 3.2 mwr 2016-05-19T15:55:35.400Z 35.9531 -97.3931 8km NNE of Guthrie, Oklahoma 6.297 3.1 ml 2016-05-16T21:45:03.900Z 35.6683 -97.1532 3km E of Luther, Oklahoma 5.928 3.1 ml 2016-05-15T14:59:47.200Z 35.6655 -97.1642 2km E of Luther, Oklahoma 6.136 3.4 mwr 2016-05-15T07:23:06.800Z 36.3748 -97.7198 14km E of Enid, Oklahoma 5.848 3.6 ml 2016-05-14T22:39:30.900Z 36.5226 -98.6957 31km S of Alva, Oklahoma 5.923 3 ml 2016-05-14T03:39:27.500Z 35.0531 -97.5573 12km SW of Goldsby, Oklahoma 5 3.1 ml 2016-05-12T15:26:43.500Z 36.9528 -97.9704 22km SSE of Anthony, Kansas 3.944 3 ml 2016-05-12T14:21:16.200Z 36.2866 -97.5146 20km W of Perry, Oklahoma 7.325 3.3 ml 2016-05-11T23:07:26.200Z 36.396 -97.3243 12km NNW of Perry, Oklahoma 5 3.1 ml 2016-05-10T17:27:16.800Z 36.2996 -96.819 4km SSW of Pawnee, Oklahoma 4.227 3.1 ml 2016-05-09T16:10:04.700Z 36.858 -98.1512 21km ENE of Cherokee, Oklahoma 7.098 3 ml 2016-05-09T08:41:54.300Z 36.8231 -97.7014 3km ENE of Medford, Oklahoma 5.378 3.1 ml 2016-05-09T00:10:27.300Z 36.2679 -97.5724 25km W of Perry, Oklahoma 5.364 3.4 ml 2016-05-08T21:19:45.000Z 36.2692 -97.5734 25km W of Perry, Oklahoma 5.969 3.3 mwr 2016-05-08T00:09:31.100Z 36.8167 -97.6182 10km E of Medford, Oklahoma 6.144 3.1 mwr 2016-05-05T10:55:55.300Z 36.688 -98.2607 11km SE of Cherokee, Oklahoma 6.007 3.5 ml 2016-05-05T01:58:53.300Z 36.8869 -97.3185 9km NNW of Blackwell, Oklahoma 6.326 3 ml 2016-05-04T16:38:53.600Z 36.4575 -98.7616 32km NW of Fairview, Oklahoma 7.494 3.2 ml 2016-05-04T12:20:25.900Z 36.8731 -98.1372 23km NE of Cherokee, Oklahoma 5 3.3 ml 2016-05-03T10:35:01.600Z 36.8124 -97.7986 5km W of Medford, Oklahoma 7.308 3 ml 2016-05-03T06:49:40.700Z 36.874 -98.1444 23km NE of Cherokee, Oklahoma 5.847 3.6 ml 2016-05-03T05:45:33.500Z 36.8753 -98.1483 22km NE of Cherokee, Oklahoma 6.534 3.7 ml 2016-05-02T17:53:05.200Z 35.7232 -97.1612 7km NNE of Luther, Oklahoma 6.275 3.1 ml 2016-05-02T13:44:52.900Z 36.9204 -97.3528 14km NNW of Blackwell, Oklahoma 5.041 3 ml 2016-05-01T13:06:11.500Z 36.4685 -98.7525 33km NW of Fairview, Oklahoma 8.139 3.7 ml Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 15 of 52
Preparer: D. Horne; Date: 02/15/21 Table 2 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Historical Earthquakes in Oklahoma Greater than 3.0 Magnitude (As of February 9, 2021)
Date and Time Latitude Longitude Epicenter Depth (km) Magnitude Mag. Type1 2016-05-01T05:37:39.590Z 37.2093 -97.889 14km ENE of Anthony, Kansas 4.06 3.4 ml 2016-04-30T23:16:24.400Z 36.8608 -98.1514 21km ENE of Cherokee, Oklahoma 6.464 3.2 ml 2016-04-30T19:39:28.500Z 35.6625 -97.1762 1km E of Luther, Oklahoma 6.056 3 ml 2016-04-30T19:04:12.500Z 35.6613 -97.4249 4km E of Edmond, Oklahoma 6.039 3.1 ml 2016-04-30T03:34:05.600Z 35.5155 -97.3066 3km WNW of Choctaw, Oklahoma 5.943 3.2 ml 2016-04-29T22:45:03.000Z 36.8858 -97.3182 9km NNW of Blackwell, Oklahoma 4.647 3 ml 2016-04-29T21:56:55.500Z 35.7243 -97.1692 7km NNE of Luther, Oklahoma 5 3.4 ml 2016-04-29T16:20:35.600Z 35.7304 -97.1577 8km NNE of Luther, Oklahoma 5.326 3.4 ml 2016-04-29T05:06:28.500Z 35.5277 -96.7724 9km WNW of Prague, Oklahoma 5.2 3 ml 2016-04-29T03:48:50.300Z 36.8622 -98.0017 24km WNW of Medford, Oklahoma 4.978 3 ml 2016-04-28T02:12:59.600Z 36.2065 -97.3188 9km SSW of Perry, Oklahoma 5.071 3 ml 2016-04-27T21:18:23.200Z 35.7285 -97.159 8km NNE of Luther, Oklahoma 5.411 3 ml 2016-04-27T15:44:55.510Z 35.7422 -97.1777 9km N of Luther, Oklahoma 6.09 3.7 mwr 2016-04-27T11:31:20.900Z 35.5186 -97.0925 7km ENE of Harrah, Oklahoma 6.462 3 ml 2016-04-27T05:19:24.700Z 35.6612 -97.1777 1km E of Luther, Oklahoma 6.098 3 ml 2016-04-26T18:46:51.200Z 35.7276 -97.1616 7km NNE of Luther, Oklahoma 5 3.6 mwr 2016-04-26T15:44:11.900Z 35.5201 -97.0899 7km ENE of Harrah, Oklahoma 6.892 3.6 mwr 2016-04-26T06:25:56.500Z 36.4761 -98.7447 33km NW of Fairview, Oklahoma 6.957 3.4 mwr 2016-04-26T06:25:44.760Z 36.4563 -98.6856 27km NW of Fairview, Oklahoma 5.73 3 mwr 2016-04-23T22:32:42.600Z 36.2162 -97.5659 26km WSW of Perry, Oklahoma 4.964 3.4 ml 2016-04-23T08:36:23.500Z 35.335 -96.5376 17km NE of Seminole, Oklahoma 2.913 3 ml 2016-04-23T05:09:38.500Z 36.5208 -98.9837 21km ENE of Mooreland, Oklahoma 4.743 3 ml 2016-04-21T18:32:42.800Z 36.5316 -98.6872 30km S of Alva, Oklahoma 4.698 3.3 mwr 2016-04-21T11:22:38.000Z 36.4575 -96.8854 15km NNW of Pawnee, Oklahoma 1.743 3 ml 2016-04-21T07:00:56.500Z 36.0902 -96.7369 4km SW of Yale, Oklahoma 4.573 3.3 ml 2016-04-20T14:11:44.700Z 36.4593 -98.7711 33km NW of Fairview, Oklahoma 6.271 3.1 ml 2016-04-19T16:45:23.100Z 36.6492 -97.7101 17km S of Medford, Oklahoma 7.161 3 ml 2016-04-17T09:59:16.200Z 36.4157 -98.1403 18km SE of Helena, Oklahoma 7.815 3.2 ml 2016-04-15T14:04:29.000Z 36.4691 -98.841 32km E of Mooreland, Oklahoma 5.865 3.1 ml 2016-04-15T13:29:35.700Z 36.4684 -98.8506 31km E of Mooreland, Oklahoma 5.875 3 ml 2016-04-14T12:10:05.100Z 36.1673 -96.8051 11km WNW of Yale, Oklahoma 5.01 3 ml 2016-04-13T21:33:16.600Z 36.9203 -97.3551 14km NNW of Blackwell, Oklahoma 7.476 3.5 ml 2016-04-12T17:02:51.500Z 36.6229 -97.6924 20km S of Medford, Oklahoma 7.419 3.3 mwr 2016-04-12T15:17:17.500Z 36.2844 -97.5187 20km W of Perry, Oklahoma 7.327 3.5 ml 2016-04-11T18:08:21.200Z 36.4876 -98.5033 21km WSW of Helena, Oklahoma 13.54 3.5 ml 2016-04-10T16:24:57.200Z 36.5217 -98.9795 22km ENE of Mooreland, Oklahoma 4.926 3.4 ml 2016-04-09T21:55:44.100Z 36.8987 -97.6768 11km NNE of Medford, Oklahoma 5 3.4 mwr 2016-04-09T15:58:01.400Z 36.8259 -98.0141 25km W of Medford, Oklahoma 6.001 3 ml 2016-04-09T04:59:07.200Z 35.5863 -97.3896 7km N of Spencer, Oklahoma 6.792 3.1 ml 2016-04-08T20:30:15.600Z 35.939 -96.762 5km S of Cushing, Oklahoma 3.41 3 ml 2016-04-08T10:49:15.400Z 35.6612 -97.1709 2km E of Luther, Oklahoma 5.588 3.1 ml 2016-04-08T10:00:31.200Z 35.663 -97.1606 3km E of Luther, Oklahoma 4.965 3.2 ml 2016-04-08T09:37:10.600Z 36.333 -97.1838 10km ENE of Perry, Oklahoma 6.305 3.1 ml 2016-04-08T05:20:01.600Z 35.6631 -97.1717 2km E of Luther, Oklahoma 5.792 3.1 ml 2016-04-07T22:27:30.400Z 35.6619 -97.1741 1km E of Luther, Oklahoma 6.106 4.2 ml 2016-04-07T21:06:25.770Z 36.2124 -97.5716 26km WSW of Perry, Oklahoma 5 3.3 mwr 2016-04-07T18:51:26.200Z 36.4203 -98.1677 16km SSE of Helena, Oklahoma 7.284 3.1 ml 2016-04-07T08:29:32.800Z 36.4225 -98.1706 16km SSE of Helena, Oklahoma 7.556 3.7 ml 2016-04-07T07:37:53.700Z 35.662 -97.1735 2km E of Luther, Oklahoma 5.297 3.6 ml 2016-04-07T07:36:24.300Z 35.6608 -97.1681 2km E of Luther, Oklahoma 5 3.1 ml 2016-04-07T05:58:56.300Z 35.6619 -97.1692 2km E of Luther, Oklahoma 5.088 3.3 ml 2016-04-06T23:24:57.100Z 36.2133 -97.5636 26km WSW of Perry, Oklahoma 6.214 3.4 mwr 2016-04-05T19:12:14.300Z 35.9358 -96.7524 5km SSE of Cushing, Oklahoma 3.927 3 ml 2016-04-04T15:24:32.900Z 36.2917 -97.0724 19km N of Stillwater, Oklahoma 5.527 3 ml 2016-04-04T13:07:09.800Z 36.7285 -98.1566 18km E of Cherokee, Oklahoma 6.35 3.3 ml 2016-04-03T01:07:36.800Z 35.719 -97.1509 7km NNE of Luther, Oklahoma 5.549 3.2 ml 2016-04-03T00:59:36.100Z 35.7218 -97.1498 7km NNE of Luther, Oklahoma 5.589 3.3 ml 2016-04-02T21:20:01.800Z 35.6735 -97.3894 8km ENE of Edmond, Oklahoma 6.458 3.1 ml 2016-04-02T21:19:26.300Z 36.043 -97.0097 7km NNE of Perkins, Oklahoma 6.008 3 ml 2016-03-31T21:31:29.600Z 35.7193 -97.1491 7km NNE of Luther, Oklahoma 5.918 3.2 mwr 2016-03-31T21:21:23.000Z 35.7198 -97.1499 7km NNE of Luther, Oklahoma 4.117 3.2 mwr 2016-03-31T21:19:41.800Z 35.7142 -97.1527 6km NNE of Luther, Oklahoma 4.758 3 ml 2016-03-30T15:57:36.800Z 36.6245 -97.6879 20km SSE of Medford, Oklahoma 6.982 3.4 mwr Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 16 of 52
Preparer: D. Horne; Date: 02/15/21 Table 2 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Historical Earthquakes in Oklahoma Greater than 3.0 Magnitude (As of February 9, 2021)
Date and Time Latitude Longitude Epicenter Depth (km) Magnitude Mag. Type1 2016-03-30T15:57:25.200Z 36.4684 -98.7495 32km NW of Fairview, Oklahoma 6.687 3.2 ml 2016-03-29T22:05:49.500Z 36.4704 -98.7501 32km NW of Fairview, Oklahoma 6.963 3.3 mwr 2016-03-29T21:12:46.080Z 36.4437 -98.6976 27km NW of Fairview, Oklahoma 4.84 3.3 mwr 2016-03-29T10:19:44.700Z 35.9888 -97.5725 4km NNE of Crescent, Oklahoma 5.556 3.6 mwr 2016-03-29T04:53:01.200Z 35.99 -97.5773 4km NNE of Crescent, Oklahoma 5.183 4.2 mwr 2016-03-27T23:28:22.800Z 36.6241 -97.6878 20km SSE of Medford, Oklahoma 6.854 3.2 ml 2016-03-27T07:19:53.800Z 36.9252 -97.3467 14km NNW of Blackwell, Oklahoma 6.962 3 ml 2016-03-27T06:09:23.900Z 36.5987 -97.8359 22km N of Enid, Oklahoma 7.264 3.3 ml 2016-03-27T06:01:47.000Z 36.5995 -97.8331 22km N of Enid, Oklahoma 7.205 3.3 mwr 2016-03-26T16:07:26.700Z 36.8787 -98.0113 26km WNW of Medford, Oklahoma 5 3 ml 2016-03-25T14:55:36.900Z 35.7241 -97.165 7km NNE of Luther, Oklahoma 5.527 3 ml 2016-03-24T12:47:04.200Z 36.5194 -98.9787 22km ENE of Mooreland, Oklahoma 4.639 3 ml 2016-03-23T11:45:16.400Z 36.8672 -98.341 12km N of Cherokee, Oklahoma 5.672 3.1 ml 2016-03-21T23:35:30.400Z 36.9006 -98.2661 18km NNE of Cherokee, Oklahoma 5 3 ml 2016-03-21T22:41:17.200Z 36.3705 -98.4457 11km NNE of Fairview, Oklahoma 7.396 3.1 ml 2016-03-20T20:54:01.100Z 36.2891 -97.5215 20km W of Perry, Oklahoma 7.619 3.2 ml 2016-03-20T08:29:55.300Z 36.4737 -98.5257 23km N of Fairview, Oklahoma 6.371 3.1 ml 2016-03-20T07:14:54.700Z 36.1902 -96.7806 11km NW of Yale, Oklahoma 6.776 3.3 ml 2016-03-19T22:59:04.400Z 35.9941 -97.1193 8km WNW of Perkins, Oklahoma 5.128 3.4 ml 2016-03-19T21:34:39.220Z 37.0948 -98.0283 6km S of Anthony, Kansas 6.27 3 ml 2016-03-19T20:28:54.300Z 36.6993 -98.6192 12km SSE of Alva, Oklahoma 7.195 3.2 ml 2016-03-18T19:57:01.300Z 35.4911 -96.9746 6km WSW of Meeker, Oklahoma 5.354 3 ml 2016-03-17T04:00:42.300Z 36.8279 -98.2815 10km NE of Cherokee, Oklahoma 5.663 3.1 ml 2016-03-17T03:34:18.200Z 36.8257 -98.2825 10km NE of Cherokee, Oklahoma 5.458 3.6 ml 2016-03-16T23:01:08.300Z 36.8337 -98.2972 10km NNE of Cherokee, Oklahoma 5.23 3 ml 2016-03-16T16:02:17.300Z 36.9164 -97.9872 25km WNW of Medford, Oklahoma 5.253 3.3 ml 2016-03-16T05:31:27.800Z 36.8392 -98.2791 11km NE of Cherokee, Oklahoma 5.454 3.2 ml 2016-03-15T10:12:45.600Z 36.6629 -97.2568 5km ESE of Tonkawa, Oklahoma 4.054 3.1 ml 2016-03-15T03:09:04.300Z 35.8207 -96.8144 14km NNE of Chandler, Oklahoma 5.967 3.3 ml 2016-03-14T10:17:22.400Z 36.8389 -98.2762 11km NE of Cherokee, Oklahoma 6.485 3.3 ml 2016-03-14T01:32:37.000Z 36.4685 -98.7485 32km NW of Fairview, Oklahoma 7.502 3.2 mwr 2016-03-13T03:43:47.400Z 36.6048 -97.7723 22km S of Medford, Oklahoma 7.35 3.4 ml 2016-03-12T01:55:02.200Z 36.373 -97.7223 14km E of Enid, Oklahoma 6.621 3.4 ml 2016-03-11T13:03:38.000Z 35.7874 -96.9892 13km NW of Chandler, Oklahoma 6.275 3.1 ml 2016-03-11T07:32:11.400Z 35.9822 -96.8066 3km W of Cushing, Oklahoma 5.307 3.2 ml 2016-03-10T23:47:24.600Z 36.284 -97.641 23km E of Waukomis, Oklahoma 6.087 3.2 ml 2016-03-10T23:42:19.490Z 36.287 -97.6458 22km E of Waukomis, Oklahoma 4.36 3.1 mb_lg 2016-03-10T18:13:13.700Z 36.6753 -98.1644 17km NNE of Helena, Oklahoma 5.62 3 ml 2016-03-10T13:56:34.500Z 36.5132 -98.7147 32km S of Alva, Oklahoma 5.36 3.1 ml 2016-03-10T12:24:35.200Z 36.2776 -97.5113 20km W of Perry, Oklahoma 6.58 3.1 ml 2016-03-10T08:16:44.150Z 36.5179 -97.7399 18km NE of Enid, Oklahoma 3.19 3 mb_lg 2016-03-09T07:08:01.300Z 35.5404 -97.3094 3km SW of Jones, Oklahoma 6.253 3 ml 2016-03-09T03:45:48.200Z 36.2793 -97.513 20km W of Perry, Oklahoma 6.816 3.3 ml 2016-03-08T22:22:57.100Z 35.6022 -97.123 9km SE of Luther, Oklahoma 5.588 3 ml 2016-03-08T09:28:42.000Z 35.9192 -97.3388 8km ENE of Guthrie, Oklahoma 6.219 3.7 ml 2016-03-07T00:43:36.400Z 36.471 -98.748 32km NW of Fairview, Oklahoma 5.997 3.6 mwr 2016-03-05T22:21:32.400Z 35.8629 -97.2123 9km SSE of Langston, Oklahoma 5 3 ml 2016-03-03T21:49:35.400Z 36.6381 -98.1437 15km NE of Helena, Oklahoma 6.049 3.1 ml 2016-03-03T18:09:18.200Z 36.2168 -97.291 8km S of Perry, Oklahoma 8.022 3 ml 2016-03-03T05:42:35.200Z 36.4612 -98.7611 33km NW of Fairview, Oklahoma 7.598 3.9 ml 2016-03-03T05:16:14.700Z 36.6688 -97.7403 15km S of Medford, Oklahoma 6.429 3 ml 2016-03-02T23:31:48.100Z 36.4751 -98.742 32km NW of Fairview, Oklahoma 7.222 3.9 mwr 2016-03-02T08:22:51.700Z 36.47 -98.758 33km NW of Fairview, Oklahoma 6.95 3 ml 2016-03-02T06:54:40.500Z 36.4626 -98.7591 33km NW of Fairview, Oklahoma 7.336 3.7 mwr 2016-03-02T06:05:30.600Z 36.6685 -97.7419 15km S of Medford, Oklahoma 6.648 3.1 ml 2016-03-01T23:08:56.100Z 35.7199 -97.1683 6km NNE of Luther, Oklahoma 5.351 3.4 ml 2016-02-29T09:53:54.700Z 36.5254 -98.9867 21km ENE of Mooreland, Oklahoma 6.91 3.3 ml 2016-02-29T09:35:05.300Z 36.5283 -98.9828 22km ENE of Mooreland, Oklahoma 7.331 3.6 ml 2016-02-29T01:58:31.900Z 35.6636 -97.3938 7km E of Edmond, Oklahoma 6.904 3 ml 2016-02-28T04:27:54.000Z 36.4282 -97.7232 14km ENE of Enid, Oklahoma 6.441 3 ml 2016-02-27T21:34:40.500Z 36.6671 -97.7431 15km S of Medford, Oklahoma 7.151 3 ml 2016-02-27T21:02:38.100Z 36.4736 -98.7528 33km NW of Fairview, Oklahoma 7.213 3.5 ml 2016-02-27T21:02:12.200Z 36.4711 -98.748 32km NW of Fairview, Oklahoma 7.281 3.3 ml Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 17 of 52
Preparer: D. Horne; Date: 02/15/21 Table 2 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Historical Earthquakes in Oklahoma Greater than 3.0 Magnitude (As of February 9, 2021)
Date and Time Latitude Longitude Epicenter Depth (km) Magnitude Mag. Type1 2016-02-27T05:07:16.400Z 36.2875 -97.5202 20km W of Perry, Oklahoma 6.914 3.5 mwr 2016-02-27T05:05:49.300Z 36.287 -97.5192 20km W of Perry, Oklahoma 6.114 3.8 mwr 2016-02-26T10:30:49.400Z 36.1337 -98.8066 17km NE of Taloga, Oklahoma 6.937 3.4 ml 2016-02-26T09:52:44.600Z 35.6698 -97.4138 6km ENE of Edmond, Oklahoma 6.839 3.3 ml 2016-02-25T20:45:15.700Z 36.5297 -98.9767 22km ENE of Mooreland, Oklahoma 6.627 3.1 ml 2016-02-25T11:39:03.600Z 35.8763 -97.3093 9km SSW of Langston, Oklahoma 7.862 3.6 mwr 2016-02-25T09:55:31.300Z 35.7745 -97.4862 12km SSW of Guthrie, Oklahoma 7.177 3 ml 2016-02-24T11:29:47.100Z 35.6718 -97.4179 5km ENE of Edmond, Oklahoma 6.396 3.4 ml 2016-02-23T16:17:09.200Z 35.6651 -97.3943 7km E of Edmond, Oklahoma 6.837 3 ml 2016-02-23T14:16:19.100Z 35.6716 -97.393 7km ENE of Edmond, Oklahoma 7.199 3.2 ml 2016-02-23T09:37:38.200Z 35.6655 -97.4037 6km ENE of Edmond, Oklahoma 6.649 3 ml 2016-02-23T08:51:58.900Z 35.6617 -97.3941 7km E of Edmond, Oklahoma 6.261 3 ml 2016-02-23T08:44:33.500Z 35.6645 -97.4049 6km E of Edmond, Oklahoma 6.57 3.7 mwr 2016-02-23T02:35:15.500Z 35.6654 -97.4023 7km ENE of Edmond, Oklahoma 7.466 3.6 ml 2016-02-23T02:06:55.800Z 35.6633 -97.3977 7km E of Edmond, Oklahoma 7.048 3 ml 2016-02-23T00:48:45.700Z 35.6669 -97.3994 7km ENE of Edmond, Oklahoma 6.42 3.2 ml 2016-02-22T16:17:49.900Z 36.3366 -96.9858 16km W of Pawnee, Oklahoma 3.747 3 ml 2016-02-22T15:17:38.400Z 36.4546 -98.7768 33km NW of Fairview, Oklahoma 7.888 3.4 mwr 2016-02-22T06:56:51.500Z 35.9058 -97.4169 3km NNE of Guthrie, Oklahoma 5.984 3.1 ml 2016-02-21T05:11:14.600Z 36.406 -97.543 26km WNW of Perry, Oklahoma 4.078 3 ml 2016-02-21T02:02:05.900Z 35.7193 -97.1696 6km NNE of Luther, Oklahoma 5.495 3.2 ml 2016-02-20T15:16:10.500Z 36.259 -97.3568 7km WSW of Perry, Oklahoma 6.789 3 ml 2016-02-19T21:16:48.200Z 36.4775 -98.7433 33km NW of Fairview, Oklahoma 7.168 3.4 ml 2016-02-19T13:18:32.900Z 36.5322 -98.6839 30km S of Alva, Oklahoma 5 3.1 ml 2016-02-19T11:33:58.700Z 35.6644 -97.401 7km E of Edmond, Oklahoma 6.852 3.2 ml 2016-02-19T08:04:39.700Z 36.529 -98.6849 30km S of Alva, Oklahoma 5 3.5 ml 2016-02-18T14:33:01.000Z 35.721 -97.1672 7km NNE of Luther, Oklahoma 6.503 3.5 ml 2016-02-17T18:59:42.100Z 35.6626 -97.3902 8km E of Edmond, Oklahoma 6.802 3 ml 2016-02-17T18:15:02.500Z 35.7232 -97.1624 7km NNE of Luther, Oklahoma 5.777 3.4 ml 2016-02-17T08:32:16.000Z 36.4648 -98.7566 33km NW of Fairview, Oklahoma 2.273 3.1 ml 2016-02-17T08:31:39.900Z 36.4585 -98.7703 33km NW of Fairview, Oklahoma 7.308 3 ml 2016-02-17T08:16:49.400Z 35.7218 -97.1626 7km NNE of Luther, Oklahoma 5.83 3.3 ml 2016-02-17T01:19:05.300Z 36.4745 -98.7617 34km NW of Fairview, Oklahoma 7.594 3.1 ml 2016-02-16T23:04:38.200Z 36.4562 -98.7489 31km NW of Fairview, Oklahoma 1.101 3.3 ml 2016-02-16T04:20:07.000Z 35.7209 -97.1648 7km NNE of Luther, Oklahoma 5.399 3.1 ml 2016-02-15T21:44:32.100Z 36.2619 -97.3526 6km WSW of Perry, Oklahoma 7.6 3.3 ml 2016-02-15T19:27:31.900Z 36.4704 -98.7628 33km NW of Fairview, Oklahoma 7.355 3.2 ml 2016-02-15T03:45:00.200Z 36.4549 -98.7642 32km NW of Fairview, Oklahoma 7.263 3.2 ml 2016-02-15T01:52:25.200Z 36.4799 -98.7307 32km NW of Fairview, Oklahoma 4.653 3.2 ml 2016-02-14T22:42:58.600Z 36.472 -98.7511 33km NW of Fairview, Oklahoma 10.137 3.4 ml 2016-02-14T11:25:50.600Z 36.2831 -97.7101 16km E of Waukomis, Oklahoma 4.975 3.5 mwr 2016-02-14T10:41:54.000Z 36.4663 -98.75 32km NW of Fairview, Oklahoma 4.316 3.1 ml 2016-02-14T04:13:32.700Z 36.5082 -98.7089 33km S of Alva, Oklahoma 7.593 3.8 ml 2016-02-14T01:11:17.300Z 36.4673 -98.7589 33km NW of Fairview, Oklahoma 7.598 3.2 ml 2016-02-14T00:32:16.000Z 36.455 -98.7638 32km NW of Fairview, Oklahoma 5.781 3.7 ml 2016-02-13T21:59:03.700Z 36.466 -98.7563 33km NW of Fairview, Oklahoma 7.089 3 ml 2016-02-13T20:58:44.900Z 36.0624 -97.4841 15km NE of Crescent, Oklahoma 5.324 3.2 ml 2016-02-13T20:55:32.100Z 36.5244 -98.7027 31km S of Alva, Oklahoma 7.763 3.3 ml 2016-02-13T20:18:05.000Z 36.4648 -98.7596 33km NW of Fairview, Oklahoma 7.56 3 ml 2016-02-13T18:21:20.200Z 36.5188 -98.7021 31km S of Alva, Oklahoma 3.889 3.7 ml 2016-02-13T17:44:18.400Z 36.5013 -98.718 33km NW of Fairview, Oklahoma 7.714 3.4 ml 2016-02-13T17:25:52.500Z 36.8766 -97.789 9km NNW of Medford, Oklahoma 2.55 3.1 ml 2016-02-13T17:17:39.100Z 36.4812 -98.7392 33km NW of Fairview, Oklahoma 5 4 ml 2016-02-13T17:07:06.290Z 36.4898 -98.709 31km NW of Fairview, Oklahoma 8.31 5.1 mww 2016-02-11T19:49:13.400Z 36.4791 -98.7459 33km NW of Fairview, Oklahoma 7.118 3.1 ml 2016-02-11T18:32:58.800Z 36.4787 -98.7524 33km NW of Fairview, Oklahoma 9.702 3.2 ml 2016-02-11T13:18:24.400Z 36.5113 -99.0049 19km ENE of Mooreland, Oklahoma 3.596 3 ml 2016-02-10T20:57:35.540Z 37.0563 -97.8933 16km SE of Anthony, Kansas 7.12 3.1 ml 2016-02-09T15:38:58.400Z 36.2597 -96.748 10km SSE of Pawnee, Oklahoma 5.1 3.4 ml 2016-02-08T08:02:12.500Z 35.54 -97.3102 3km SW of Jones, Oklahoma 6.319 3.5 ml 2016-02-07T16:10:00.700Z 35.9748 -97.1792 7km ENE of Langston, Oklahoma 7.801 3.6 ml 2016-02-06T21:59:54.100Z 35.9734 -97.1795 7km ENE of Langston, Oklahoma 7.034 3.7 ml 2016-02-06T20:39:09.000Z 36.8274 -97.7746 4km WNW of Medford, Oklahoma 5.834 3.4 mwr Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 18 of 52
Preparer: D. Horne; Date: 02/15/21 Table 2 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Historical Earthquakes in Oklahoma Greater than 3.0 Magnitude (As of February 9, 2021)
Date and Time Latitude Longitude Epicenter Depth (km) Magnitude Mag. Type1 2016-02-06T09:19:18.100Z 35.9737 -97.1766 7km ENE of Langston, Oklahoma 6.962 3.1 ml 2016-02-06T09:13:47.600Z 35.9745 -97.1806 7km ENE of Langston, Oklahoma 7.74 3.1 ml 2016-02-05T16:09:30.200Z 36.5709 -97.8167 20km NNE of Enid, Oklahoma 6.884 3.5 ml 2016-02-05T16:06:24.000Z 36.57 -97.814 20km NNE of Enid, Oklahoma 5.37 3.1 ml 2016-02-05T13:21:43.600Z 36.1753 -97.2566 12km SSE of Perry, Oklahoma 7.369 3.1 ml 2016-02-05T11:38:50.000Z 36.3214 -97.5533 24km W of Perry, Oklahoma 5.668 3.1 ml 2016-02-04T20:27:39.700Z 35.9502 -97.3859 8km NNE of Guthrie, Oklahoma 6.315 3.3 ml 2016-02-03T23:11:28.000Z 36.8143 -97.622 9km E of Medford, Oklahoma 5.686 3.5 ml 2016-02-03T07:00:42.900Z 35.9553 -97.3684 9km NNE of Guthrie, Oklahoma 5.732 3.2 ml 2016-02-02T13:32:25.500Z 36.477 -98.7416 32km NW of Fairview, Oklahoma 7.46 3.4 ml 2016-02-02T02:29:57.600Z 36.4777 -98.7442 33km NW of Fairview, Oklahoma 7.137 3.6 ml 2016-02-01T09:45:23.600Z 36.1242 -97.0618 1km NNW of Stillwater, Oklahoma 6.929 3 ml 2016-01-31T08:56:46.400Z 36.3879 -96.7162 9km NE of Pawnee, Oklahoma 6.967 3.5 ml 2016-01-30T22:16:42.000Z 36.4861 -98.7349 33km NW of Fairview, Oklahoma 7.497 3 ml 2016-01-30T19:20:10.600Z 35.4149 -96.5568 10km SW of Boley, Oklahoma 4.565 3.1 ml 2016-01-29T21:58:07.600Z 36.4831 -98.7478 33km NW of Fairview, Oklahoma 7.811 3.6 ml 2016-01-29T20:45:22.100Z 36.4781 -98.7424 33km NW of Fairview, Oklahoma 2.924 3.2 ml 2016-01-29T20:27:47.700Z 36.4748 -98.7515 33km NW of Fairview, Oklahoma 7.989 3.4 ml 2016-01-29T17:47:12.000Z 36.4857 -98.7403 33km NW of Fairview, Oklahoma 8.215 3.4 ml 2016-01-28T16:33:07.400Z 36.5004 -97.0742 20km S of McCord, Oklahoma 7.222 3.5 mwr 2016-01-28T15:07:45.400Z 35.6915 -97.4648 4km NNE of Edmond, Oklahoma 5.888 3.1 ml 2016-01-28T00:50:33.300Z 36.758 -98.0688 25km E of Cherokee, Oklahoma 6.455 3.2 ml 2016-01-26T06:24:49.700Z 36.9178 -97.9822 25km WNW of Medford, Oklahoma 5 3.2 mwr 2016-01-25T10:05:43.300Z 35.8809 -97.337 7km E of Guthrie, Oklahoma 5 3 ml 2016-01-25T04:56:09.600Z 35.8812 -97.3329 8km E of Guthrie, Oklahoma 4.872 3.4 ml 2016-01-24T22:52:58.400Z 36.6625 -98.4647 14km SW of Cherokee, Oklahoma 11.241 3.3 ml 2016-01-24T18:19:40.800Z 36.9408 -97.8536 18km NW of Medford, Oklahoma 4.995 3 ml 2016-01-24T16:21:56.600Z 36.482 -98.7411 33km NW of Fairview, Oklahoma 5.901 3 ml 2016-01-24T10:01:40.800Z 36.9319 -97.6479 11km SSW of Caldwell, Kansas 3.778 3.5 mwr 2016-01-24T06:16:20.000Z 36.4499 -98.3717 14km SW of Helena, Oklahoma 6.284 3 ml 2016-01-23T03:40:26.800Z 36.4971 -98.7318 33km NW of Fairview, Oklahoma 7.742 3.1 ml 2016-01-22T12:41:24.000Z 36.8675 -97.9927 24km WNW of Medford, Oklahoma 5.599 3.1 ml 2016-01-22T11:45:55.900Z 36.76 -98.0517 27km E of Cherokee, Oklahoma 5.895 3.2 ml 2016-01-22T10:59:08.700Z 36.6028 -97.8279 23km N of Enid, Oklahoma 6.85 3.7 ml 2016-01-22T08:45:04.800Z 36.4832 -98.7273 32km NW of Fairview, Oklahoma 5.027 3 ml 2016-01-22T08:22:03.900Z 36.8342 -97.9888 22km W of Medford, Oklahoma 6.495 3 ml 2016-01-22T06:05:01.600Z 35.8962 -97.2489 5km S of Langston, Oklahoma 5.91 3.1 ml 2016-01-22T05:17:09.100Z 36.5248 -98.6902 31km S of Alva, Oklahoma 1.443 3.2 ml 2016-01-22T01:15:42.500Z 35.671 -97.4167 5km ENE of Edmond, Oklahoma 6.302 3.2 ml 2016-01-21T21:05:04.600Z 36.8347 -97.9844 22km W of Medford, Oklahoma 6.777 3 ml 2016-01-21T12:55:58.300Z 36.7924 -97.882 13km W of Medford, Oklahoma 5.594 3 ml 2016-01-21T08:27:58.400Z 36.5133 -98.6987 32km S of Alva, Oklahoma 5.692 3 ml 2016-01-20T08:55:58.000Z 35.7465 -97.3563 15km NE of Edmond, Oklahoma 5.936 3.6 ml 2016-01-20T04:41:57.400Z 36.4563 -97.7326 14km ENE of Enid, Oklahoma 7.766 3 ml 2016-01-19T23:57:07.300Z 36.827 -97.7697 3km NW of Medford, Oklahoma 4.45 3.3 ml 2016-01-19T20:45:57.700Z 36.507 -98.7135 33km S of Alva, Oklahoma 7.478 3.8 mwr 2016-01-19T19:41:57.200Z 36.5007 -98.7137 33km NW of Fairview, Oklahoma 6.357 3 ml 2016-01-18T16:41:56.300Z 35.9526 -97.3894 8km NNE of Guthrie, Oklahoma 6.882 3 ml 2016-01-18T12:55:56.900Z 36.2761 -98.4096 6km E of Fairview, Oklahoma 8.309 4.1 ml 2016-01-18T01:13:32.000Z 35.6719 -97.4155 6km ENE of Edmond, Oklahoma 6.381 3.2 ml 2016-01-17T08:51:55.600Z 36.0751 -97.2038 13km WSW of Stillwater, Oklahoma 7.869 3.3 ml 2016-01-17T00:59:31.200Z 36.8662 -97.9984 24km WNW of Medford, Oklahoma 4.99 3.5 ml 2016-01-16T22:37:51.200Z 36.7743 -97.8667 12km WSW of Medford, Oklahoma 5.92 3.1 ml 2016-01-16T00:36:51.200Z 36.4482 -98.3695 14km SW of Helena, Oklahoma 5.949 3 ml 2016-01-15T09:31:51.400Z 36.5851 -98.1352 12km ENE of Helena, Oklahoma 6.464 3 ml 2016-01-15T08:04:27.100Z 35.9593 -96.9113 11km E of Perkins, Oklahoma 4.088 3.6 ml 2016-01-15T03:29:24.300Z 36.9498 -97.8217 17km NNW of Medford, Oklahoma 5.729 3.1 ml 2016-01-15T02:06:30.400Z 36.9509 -97.8102 17km NNW of Medford, Oklahoma 5 3.3 ml 2016-01-14T23:15:31.900Z 36.939 -97.7972 15km NNW of Medford, Oklahoma 2.351 3.5 mwr 2016-01-14T22:41:39.100Z 36.7675 -97.7725 5km SW of Medford, Oklahoma 6.003 3.4 ml 2016-01-14T12:55:03.200Z 36.4803 -98.7542 34km NW of Fairview, Oklahoma 7.304 3.2 ml 2016-01-14T04:45:53.500Z 36.4813 -98.7485 33km NW of Fairview, Oklahoma 9.489 3.1 ml 2016-01-13T18:22:31.100Z 36.9535 -97.8334 18km NNW of Medford, Oklahoma 5.034 3 ml Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 19 of 52
Preparer: D. Horne; Date: 02/15/21 Table 2 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Historical Earthquakes in Oklahoma Greater than 3.0 Magnitude (As of February 9, 2021)
Date and Time Latitude Longitude Epicenter Depth (km) Magnitude Mag. Type1 2016-01-13T15:44:07.900Z 36.9368 -97.71 14km SW of Caldwell, Kansas 3.074 3.2 ml 2016-01-13T03:44:19.200Z 35.9516 -97.3918 8km NNE of Guthrie, Oklahoma 7.632 3.1 ml 2016-01-13T03:14:21.900Z 35.6646 -97.3928 7km E of Edmond, Oklahoma 6.593 3 ml 2016-01-11T15:18:06.200Z 36.5072 -98.7076 33km S of Alva, Oklahoma 6.609 3.4 ml 2016-01-11T14:16:12.200Z 36.4728 -98.756 33km NW of Fairview, Oklahoma 8.148 3.2 ml 2016-01-11T13:12:16.700Z 36.4723 -98.7575 33km NW of Fairview, Oklahoma 7.331 3 ml 2016-01-11T09:04:05.900Z 36.478 -98.7316 32km NW of Fairview, Oklahoma 5 3 ml 2016-01-11T04:17:32.800Z 36.4797 -98.7369 32km NW of Fairview, Oklahoma 5 3 ml 2016-01-11T02:01:54.100Z 36.4755 -98.7625 34km NW of Fairview, Oklahoma 8.363 3.4 mwr 2016-01-10T15:12:01.900Z 36.6065 -98.1003 16km ENE of Helena, Oklahoma 7.389 3.1 ml 2016-01-09T16:50:05.800Z 36.5164 -98.6953 32km S of Alva, Oklahoma 6.05 3 ml 2016-01-08T18:43:14.600Z 35.6632 -97.3914 7km E of Edmond, Oklahoma 6.675 3.5 ml 2016-01-08T17:50:04.100Z 36.5072 -98.7123 33km S of Alva, Oklahoma 7.828 3.5 ml 2016-01-08T17:08:42.800Z 36.711 -98.4298 8km SW of Cherokee, Oklahoma 3.629 3.1 ml 2016-01-08T16:57:48.800Z 36.5866 -98.4054 12km WNW of Helena, Oklahoma 7.407 3.1 ml 2016-01-08T16:46:49.200Z 36.4905 -98.7306 33km NW of Fairview, Oklahoma 7.465 3 ml 2016-01-08T14:01:56.100Z 36.5095 -98.7148 33km S of Alva, Oklahoma 7.532 3.9 ml 2016-01-08T13:36:29.000Z 36.5137 -98.7184 32km S of Alva, Oklahoma 10.447 3.8 mwr 2016-01-08T09:54:40.900Z 36.7305 -98.0145 26km WSW of Medford, Oklahoma 6.145 3.1 ml 2016-01-08T05:49:44.700Z 36.3087 -96.6483 14km ESE of Pawnee, Oklahoma 6.768 3 ml 2016-01-08T05:37:45.100Z 36.7064 -97.6317 14km SE of Medford, Oklahoma 5.33 3.5 ml 2016-01-08T01:53:30.800Z 36.4919 -98.7296 33km NW of Fairview, Oklahoma 7.703 3 ml 2016-01-08T00:10:03.600Z 36.4968 -98.7259 33km NW of Fairview, Oklahoma 7.717 3 ml 2016-01-07T19:59:44.500Z 36.5024 -98.7108 33km S of Alva, Oklahoma 5 3.7 mwr 2016-01-07T18:34:35.100Z 36.4707 -98.7527 33km NW of Fairview, Oklahoma 9.378 3.4 ml 2016-01-07T18:00:26.300Z 36.4698 -98.7479 32km NW of Fairview, Oklahoma 5.696 3.4 ml 2016-01-07T13:40:59.200Z 36.4819 -98.7491 33km NW of Fairview, Oklahoma 9.828 3.7 ml 2016-01-07T10:48:41.700Z 36.4805 -98.7499 33km NW of Fairview, Oklahoma 7.891 3.8 ml 2016-01-07T10:12:52.300Z 36.4747 -98.7422 32km NW of Fairview, Oklahoma 6.175 3.2 ml 2016-01-07T08:37:11.100Z 36.4754 -98.7342 32km NW of Fairview, Oklahoma 6.647 4.4 mwr 2016-01-07T08:06:15.100Z 36.4755 -98.7549 33km NW of Fairview, Oklahoma 8.698 3.9 ml 2016-01-07T08:02:30.900Z 36.5014 -98.723 33km NW of Fairview, Oklahoma 8.714 3.4 ml 2016-01-07T06:42:57.600Z 35.6574 -97.406 6km E of Edmond, Oklahoma 6.829 3 ml 2016-01-07T06:38:33.800Z 36.4843 -98.7372 33km NW of Fairview, Oklahoma 5.168 3.6 ml 2016-01-07T06:03:28.900Z 36.5226 -98.6992 31km S of Alva, Oklahoma 8.102 3.3 ml 2016-01-07T05:37:48.500Z 36.4815 -98.7475 33km NW of Fairview, Oklahoma 7.603 3.1 ml 2016-01-07T05:19:47.500Z 36.4843 -98.7382 33km NW of Fairview, Oklahoma 6.664 3.5 ml 2016-01-07T04:49:47.100Z 36.4794 -98.7423 33km NW of Fairview, Oklahoma 8.284 3.6 ml 2016-01-07T04:27:57.600Z 36.4955 -98.7254 33km NW of Fairview, Oklahoma 4.058 4.7 mww 2016-01-07T04:27:27.900Z 36.486 -98.7412 33km NW of Fairview, Oklahoma 7.093 4.4 mwr 2016-01-07T03:07:10.200Z 36.4901 -98.7294 33km NW of Fairview, Oklahoma 4.317 3.2 ml 2016-01-07T02:15:07.700Z 35.6689 -97.4037 6km ENE of Edmond, Oklahoma 6.229 3.5 ml 2016-01-06T15:26:12.200Z 36.4892 -98.7304 33km NW of Fairview, Oklahoma 7.195 3.9 ml 2016-01-06T12:51:12.200Z 35.6618 -97.4121 6km E of Edmond, Oklahoma 5.076 3.2 ml 2016-01-06T10:40:29.700Z 36.7302 -98.0189 26km WSW of Medford, Oklahoma 6.336 3.2 ml 2016-01-06T06:51:39.200Z 35.6621 -97.3902 8km E of Edmond, Oklahoma 5.336 3.2 ml 2016-01-06T06:19:25.300Z 36.4885 -98.7319 33km NW of Fairview, Oklahoma 9.409 4 ml 2016-01-06T01:17:05.400Z 35.6596 -97.3904 7km E of Edmond, Oklahoma 6.35 3 ml 2016-01-04T12:43:02.500Z 36.0733 -97.201 13km WSW of Stillwater, Oklahoma 9.143 3.4 ml 2016-01-04T12:23:24.500Z 36.0734 -97.2023 13km WSW of Stillwater, Oklahoma 11.517 3.5 ml 2016-01-04T10:20:59.100Z 36.0727 -97.2042 13km WSW of Stillwater, Oklahoma 10.367 3.4 ml 2016-01-04T09:45:04.100Z 36.0706 -97.2026 13km WSW of Stillwater, Oklahoma 11.605 3.3 ml 2016-01-03T21:38:49.200Z 36.0695 -97.214 14km WSW of Stillwater, Oklahoma 4.965 3.3 ml 2016-01-03T20:56:29.000Z 36.0702 -97.2056 14km WSW of Stillwater, Oklahoma 9.838 3.1 ml 2016-01-02T21:04:34.500Z 36.2754 -97.4586 15km W of Perry, Oklahoma 6.582 3.3 ml 2016-01-02T20:26:40.400Z 35.7431 -97.3569 14km NE of Edmond, Oklahoma 6.662 3.3 mwr 2016-01-02T13:46:06.500Z 36.277 -97.4544 15km W of Perry, Oklahoma 6.501 3.1 ml 2016-01-02T05:08:11.500Z 36.8214 -97.7101 2km NE of Medford, Oklahoma 5.561 3 ml 2016-01-02T00:02:38.100Z 36.4865 -98.7376 33km NW of Fairview, Oklahoma 7.779 3 ml 2016-01-01T23:15:58.850Z 35.9688 -97.4016 10km NNE of Guthrie, Oklahoma 5 3.2 mb_lg 2016-01-01T22:40:26.600Z 35.9533 -97.3969 8km NNE of Guthrie, Oklahoma 6.886 3.1 ml 2016-01-01T22:08:04.700Z 35.6661 -97.3992 7km ENE of Edmond, Oklahoma 6.696 3 ml 2016-01-01T20:28:07.600Z 35.8209 -97.4362 6km S of Guthrie, Oklahoma 5.632 3.4 ml Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 20 of 52
Preparer: D. Horne; Date: 02/15/21 Table 2 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Historical Earthquakes in Oklahoma Greater than 3.0 Magnitude (As of February 9, 2021)
Date and Time Latitude Longitude Epicenter Depth (km) Magnitude Mag. Type1 2016-01-01T11:39:39.800Z 35.6688 -97.4065 6km ENE of Edmond, Oklahoma 5.825 4.2 mwr 2016-01-01T11:25:04.500Z 36.8042 -97.8514 10km W of Medford, Oklahoma 5.454 3 ml 2015-12-31T11:35:26.400Z 36.6123 -98.8055 24km SSW of Alva, Oklahoma 6.285 3.2 ml 2015-12-31T03:26:38.500Z 36.8328 -97.7676 4km NW of Medford, Oklahoma 5.41 3 ml 2015-12-30T18:13:45.400Z 35.6648 -97.4018 7km E of Edmond, Oklahoma 7.184 3 ml 2015-12-30T11:22:48.500Z 35.9428 -97.2997 4km W of Langston, Oklahoma 7.69 3.2 ml 2015-12-30T07:32:48.600Z 35.6656 -97.399 7km ENE of Edmond, Oklahoma 5.994 3.1 ml 2015-12-30T06:00:10.700Z 36.5904 -98.3799 10km WNW of Helena, Oklahoma 5.458 3.3 ml 2015-12-30T03:45:08.200Z 36.729 -98.0094 26km WSW of Medford, Oklahoma 6.625 3.7 ml 2015-12-29T22:17:47.900Z 35.9424 -97.2991 3km W of Langston, Oklahoma 6.66 3.3 ml 2015-12-29T21:40:47.000Z 35.6702 -97.4075 6km ENE of Edmond, Oklahoma 6.254 3.3 ml 2015-12-29T20:27:25.500Z 35.6632 -97.3978 7km E of Edmond, Oklahoma 6.286 3 ml 2015-12-29T20:24:42.800Z 36.5036 -98.8963 28km ENE of Mooreland, Oklahoma 15.73 3 mb_lg 2015-12-29T18:47:08.700Z 35.6636 -97.4002 7km E of Edmond, Oklahoma 6.717 3.3 ml 2015-12-29T18:00:32.300Z 35.6664 -97.4052 6km ENE of Edmond, Oklahoma 6.531 3 ml 2015-12-29T12:48:14.100Z 36.4455 -98.7997 34km NW of Fairview, Oklahoma 4.985 3.1 ml 2015-12-29T11:51:02.600Z 35.6713 -97.413 6km ENE of Edmond, Oklahoma 5.967 3.3 ml 2015-12-29T11:49:23.900Z 35.6694 -97.411 6km ENE of Edmond, Oklahoma 6.128 3.5 ml 2015-12-29T11:39:19.200Z 35.6654 -97.4054 6km ENE of Edmond, Oklahoma 6.532 4.3 mwr 2015-12-29T03:22:35.300Z 36.8343 -98.281 11km NE of Cherokee, Oklahoma 4.669 3 ml 2015-12-28T16:21:32.500Z 36.2902 -97.1243 14km E of Perry, Oklahoma 4.167 3.2 ml 2015-12-28T15:52:56.600Z 36.2629 -97.3543 6km WSW of Perry, Oklahoma 7.669 3.4 ml 2015-12-28T09:02:20.400Z 36.458 -98.7686 33km NW of Fairview, Oklahoma 7.239 3 ml 2015-12-28T03:59:30.600Z 35.6693 -97.4048 6km ENE of Edmond, Oklahoma 5 3.7 ml 2015-12-28T00:36:30.000Z 35.586 -97.3737 7km N of Spencer, Oklahoma 6.08 3.4 ml 2015-12-27T13:18:58.800Z 36.834 -97.7922 6km WNW of Medford, Oklahoma 5 3.5 ml 2015-12-26T19:41:17.800Z 35.5891 -97.3829 7km N of Spencer, Oklahoma 6.099 3.2 ml 2015-12-26T19:40:15.700Z 35.5894 -97.3805 7km N of Spencer, Oklahoma 6.07 3 ml 2015-12-26T05:35:05.700Z 36.0603 -97.5525 12km NNE of Crescent, Oklahoma 5.868 3 ml 2015-12-25T19:12:25.400Z 36.7287 -98.0118 26km WSW of Medford, Oklahoma 6.212 3.6 mwr 2015-12-25T13:45:26.600Z 36.7313 -98.0116 26km WSW of Medford, Oklahoma 5.127 3.1 ml 2015-12-24T22:21:41.900Z 35.8223 -97.4228 6km S of Guthrie, Oklahoma 2.803 3 ml 2015-12-24T15:14:55.100Z 35.8186 -97.425 6km S of Guthrie, Oklahoma 5.855 3.4 ml 2015-12-24T15:13:34.600Z 35.8186 -97.4268 6km S of Guthrie, Oklahoma 6.359 3.2 ml 2015-12-24T04:40:37.500Z 36.4861 -98.5029 21km WSW of Helena, Oklahoma 3.854 3.3 ml 2015-12-24T04:10:47.900Z 36.7598 -98.0725 25km E of Cherokee, Oklahoma 6.521 3.3 ml 2015-12-23T07:35:11.200Z 36.7123 -97.5674 18km SE of Medford, Oklahoma 6.33 3 ml 2015-12-23T03:04:00.300Z 36.9488 -97.8446 18km NNW of Medford, Oklahoma 3.315 3.3 ml 2015-12-23T00:45:32.100Z 36.7599 -98.0722 25km E of Cherokee, Oklahoma 6.433 3.3 ml 2015-12-22T19:15:53.900Z 36.7577 -98.0696 25km E of Cherokee, Oklahoma 6.443 3 ml 2015-12-22T16:39:09.500Z 35.7432 -97.3532 15km NE of Edmond, Oklahoma 5.58 3.5 ml 2015-12-21T02:32:57.400Z 36.4869 -98.7262 32km NW of Fairview, Oklahoma 5 3 ml 2015-12-20T16:18:58.600Z 36.5387 -97.1875 18km SE of Tonkawa, Oklahoma 6.424 3 ml 2015-12-19T01:37:15.100Z 36.7012 -97.986 25km WSW of Medford, Oklahoma 6.822 3.3 ml 2015-12-18T18:45:00.900Z 35.8944 -96.7415 10km SSE of Cushing, Oklahoma 4.904 3.2 ml 2015-12-18T08:06:07.100Z 36.1196 -97.636 18km NNW of Crescent, Oklahoma 5 3.3 ml 2015-12-18T04:09:24.300Z 36.4971 -98.7304 33km NW of Fairview, Oklahoma 6.519 3.6 ml 2015-12-18T02:35:04.100Z 36.2926 -97.5186 20km W of Perry, Oklahoma 6.634 3.4 ml 2015-12-18T02:03:25.100Z 35.9869 -96.799 2km W of Cushing, Oklahoma 5.563 3.7 ml 2015-12-17T15:56:06.300Z 36.2121 -97.5533 25km WSW of Perry, Oklahoma 5.952 3.4 ml 2015-12-17T05:56:11.400Z 35.9916 -97.2294 5km NNE of Langston, Oklahoma 5.588 3.1 ml 2015-12-16T09:20:34.700Z 35.6173 -97.0863 11km ESE of Luther, Oklahoma 5.801 3.4 ml 2015-12-15T22:56:07.900Z 36.2125 -97.5543 25km WSW of Perry, Oklahoma 6.153 3.2 ml 2015-12-15T20:42:07.600Z 36.5302 -98.5909 28km W of Helena, Oklahoma 4.64 3.2 ml 2015-12-15T16:49:11.400Z 36.7654 -98.0543 27km E of Cherokee, Oklahoma 6.29 3.3 ml 2015-12-15T09:57:48.800Z 36.2129 -97.554 25km WSW of Perry, Oklahoma 6.119 3.2 ml 2015-12-15T01:07:48.900Z 36.7462 -98.127 20km E of Cherokee, Oklahoma 6.32 3.1 ml 2015-12-14T06:54:41.500Z 36.2836 -97.5096 19km W of Perry, Oklahoma 6.583 3.2 ml 2015-12-13T21:00:07.500Z 36.2803 -97.5159 20km W of Perry, Oklahoma 7.584 3 ml 2015-12-13T15:24:14.500Z 36.8675 -98.0032 24km WNW of Medford, Oklahoma 5.778 3 ml 2015-12-12T17:40:40.900Z 36.4466 -97.1198 23km NE of Perry, Oklahoma 6.667 3.4 ml 2015-12-12T12:39:57.900Z 36.28 -97.4563 15km W of Perry, Oklahoma 8.016 3.1 ml 2015-12-10T23:21:45.300Z 36.2624 -97.357 6km WSW of Perry, Oklahoma 7.99 3.3 ml Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 21 of 52
Preparer: D. Horne; Date: 02/15/21 Table 2 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Historical Earthquakes in Oklahoma Greater than 3.0 Magnitude (As of February 9, 2021)
Date and Time Latitude Longitude Epicenter Depth (km) Magnitude Mag. Type1 2015-12-09T23:12:01.400Z 36.6037 -98.3492 9km NW of Helena, Oklahoma 3.966 3.3 ml 2015-12-09T02:14:05.600Z 36.7615 -97.6104 12km ESE of Medford, Oklahoma 6.409 3 ml 2015-12-08T02:04:39.400Z 36.9531 -97.8029 17km NNW of Medford, Oklahoma 3.856 3.5 ml 2015-12-08T00:30:30.300Z 36.9466 -97.8224 17km NNW of Medford, Oklahoma 4.862 3.4 ml 2015-12-08T00:29:49.800Z 36.9432 -97.8095 16km NNW of Medford, Oklahoma 3.83 3 ml 2015-12-08T00:25:42.500Z 36.9373 -97.8253 16km NNW of Medford, Oklahoma 8.096 3.4 ml 2015-12-08T00:08:30.600Z 36.9451 -97.815 16km NNW of Medford, Oklahoma 3.913 3.5 mwr 2015-12-06T18:29:50.700Z 36.7599 -98.0659 25km E of Cherokee, Oklahoma 6.637 3.5 ml 2015-12-06T18:25:37.300Z 35.8485 -96.6504 11km N of Stroud, Oklahoma 4.625 3.1 ml 2015-12-06T03:04:36.700Z 36.466 -98.7523 32km NW of Fairview, Oklahoma 4.099 3.1 ml 2015-12-06T01:01:41.900Z 36.4703 -98.7606 33km NW of Fairview, Oklahoma 6.126 4 mwr 2015-12-05T21:44:36.000Z 36.2 -97.4277 16km SW of Perry, Oklahoma 6.122 3.4 ml 2015-12-05T01:14:18.900Z 34.8037 -97.8063 13km E of Rush Springs, Oklahoma 10.507 3.1 ml 2015-12-04T22:17:57.800Z 36.6136 -98.0533 20km ENE of Helena, Oklahoma 5.975 3.2 ml 2015-12-04T15:17:53.300Z 36.7635 -98.055 26km E of Cherokee, Oklahoma 6.234 3.1 ml 2015-12-04T05:08:12.900Z 36.8315 -98.2737 11km NE of Cherokee, Oklahoma 4.986 3.2 mwr 2015-12-04T00:27:40.500Z 36.7605 -98.0523 27km E of Cherokee, Oklahoma 6.714 3.6 ml 2015-12-02T19:40:30.000Z 36.8265 -98.2839 10km NE of Cherokee, Oklahoma 5.307 3.4 ml 2015-12-02T06:19:59.700Z 36.7586 -98.0656 26km E of Cherokee, Oklahoma 6.77 3.1 ml 2015-12-01T17:36:39.100Z 36.7353 -98.7485 10km SW of Alva, Oklahoma 3.18 3 ml 2015-12-01T17:34:35.300Z 36.5074 -98.7109 33km S of Alva, Oklahoma 1.255 3.1 ml 2015-12-01T00:46:31.900Z 36.6562 -98.4644 14km SW of Cherokee, Oklahoma 7.922 3.2 ml 2015-11-30T21:28:44.400Z 36.9443 -97.8309 17km NNW of Medford, Oklahoma 5.264 3.3 mwr 2015-11-30T19:47:11.400Z 36.3457 -99.2157 10km S of Mooreland, Oklahoma 2.981 3.3 ml 2015-11-30T13:00:55.300Z 36.2814 -97.5075 19km W of Perry, Oklahoma 11.418 3.2 ml 2015-11-30T11:50:15.000Z 35.6679 -97.3949 7km ENE of Edmond, Oklahoma 5.448 3.2 ml 2015-11-30T09:49:12.800Z 36.7509 -98.0561 26km E of Cherokee, Oklahoma 5.629 4.7 mwr 2015-11-29T10:17:42.400Z 36.5082 -99.029 17km ENE of Mooreland, Oklahoma 6.333 3 ml 2015-11-26T09:08:44.000Z 36.9559 -97.8262 18km NNW of Medford, Oklahoma 6.286 3.2 ml 2015-11-26T09:04:55.700Z 36.382 -98.2791 18km S of Helena, Oklahoma 2.752 3 ml 2015-11-26T05:14:50.500Z 36.3304 -97.7317 15km ESE of Enid, Oklahoma 5.466 3 ml 2015-11-26T05:06:37.200Z 36.3316 -97.7259 15km ESE of Enid, Oklahoma 5.438 3.1 ml 2015-11-26T00:56:02.500Z 36.9459 -97.8108 16km NNW of Medford, Oklahoma 4.784 3.1 mwr 2015-11-26T00:32:48.800Z 36.9465 -97.8139 17km NNW of Medford, Oklahoma 5.439 3.3 ml 2015-11-25T17:57:45.800Z 35.8638 -96.8725 16km SW of Cushing, Oklahoma 5.213 3 ml 2015-11-25T14:02:02.300Z 36.9448 -97.8125 16km NNW of Medford, Oklahoma 4.103 3.3 ml 2015-11-25T00:43:50.800Z 36.8393 -98.2691 12km NE of Cherokee, Oklahoma 4.864 4.1 mb 2015-11-24T02:47:40.600Z 36.8152 -98.2767 9km NE of Cherokee, Oklahoma 5.942 3 ml 2015-11-24T01:13:55.200Z 36.8134 -98.2758 9km NE of Cherokee, Oklahoma 6.835 3.1 ml 2015-11-24T00:54:18.200Z 36.8179 -98.2846 9km NE of Cherokee, Oklahoma 5.517 3.3 mwr 2015-11-23T21:36:18.400Z 36.8326 -98.2905 10km NE of Cherokee, Oklahoma 4.266 3.8 ml 2015-11-23T21:17:46.500Z 36.8382 -98.2762 11km NE of Cherokee, Oklahoma 5.028 4.4 mwr 2015-11-23T18:31:01.000Z 36.6528 -98.4777 15km SW of Cherokee, Oklahoma 7.427 3.2 ml 2015-11-22T08:12:32.100Z 36.6596 -98.4593 13km SW of Cherokee, Oklahoma 6.981 3 ml 2015-11-21T14:04:13.600Z 36.945 -97.819 17km NNW of Medford, Oklahoma 4.068 3 ml 2015-11-20T23:09:28.400Z 36.6619 -98.4609 13km SW of Cherokee, Oklahoma 7.995 3.4 ml 2015-11-20T22:55:51.200Z 36.9413 -97.8259 17km NNW of Medford, Oklahoma 3.555 3.5 mwr 2015-11-20T22:53:47.900Z 36.9456 -97.8471 18km NNW of Medford, Oklahoma 4.878 3.5 ml 2015-11-20T22:40:40.300Z 36.9483 -97.8276 17km NNW of Medford, Oklahoma 5 4.1 mwr 2015-11-20T21:11:13.800Z 36.7607 -98.0745 25km E of Cherokee, Oklahoma 6.697 3.4 ml 2015-11-20T15:42:32.400Z 36.5143 -98.6089 29km NNW of Fairview, Oklahoma 5 3.3 ml 2015-11-20T12:07:45.300Z 36.6547 -98.4654 14km SW of Cherokee, Oklahoma 5.727 3 ml 2015-11-20T11:22:05.100Z 36.6534 -98.4733 15km SW of Cherokee, Oklahoma 7.096 3.5 ml 2015-11-20T08:06:01.900Z 36.5129 -98.6097 29km NNW of Fairview, Oklahoma 4.934 3.4 ml 2015-11-20T06:12:49.900Z 36.6535 -98.4719 15km SW of Cherokee, Oklahoma 6.69 3.7 ml 2015-11-19T14:24:58.800Z 36.0788 -97.5686 14km N of Crescent, Oklahoma 4.488 3.7 mwr 2015-11-19T13:25:10.600Z 36.071 -97.5836 13km N of Crescent, Oklahoma 4.87 3.2 ml 2015-11-19T12:03:10.000Z 36.6563 -98.4682 14km SW of Cherokee, Oklahoma 7.009 3.3 mwr 2015-11-19T09:46:22.000Z 36.6561 -98.4614 14km SW of Cherokee, Oklahoma 10.294 3.2 ml 2015-11-19T07:42:12.000Z 36.6602 -98.4594 13km SW of Cherokee, Oklahoma 5.914 4.7 mwr 2015-11-19T03:34:05.500Z 36.2833 -97.7102 16km E of Waukomis, Oklahoma 5.834 3 ml 2015-11-18T12:08:40.000Z 36.1212 -97.6437 19km NNW of Crescent, Oklahoma 4.858 3.4 mwr 2015-11-18T03:22:41.900Z 36.7759 -97.7622 4km SW of Medford, Oklahoma 6.033 3.2 ml Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 22 of 52
Preparer: D. Horne; Date: 02/15/21 Table 2 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Historical Earthquakes in Oklahoma Greater than 3.0 Magnitude (As of February 9, 2021)
Date and Time Latitude Longitude Epicenter Depth (km) Magnitude Mag. Type1 2015-11-17T16:50:49.800Z 36.3686 -97.1309 16km ENE of Perry, Oklahoma 3.339 3.1 ml 2015-11-15T09:45:31.300Z 36.4696 -98.7549 33km NW of Fairview, Oklahoma 5.109 4.3 mwr 2015-11-14T16:40:46.400Z 36.1991 -97.4882 20km WSW of Perry, Oklahoma 6.399 3.1 ml 2015-11-13T20:47:22.500Z 36.6941 -98.2615 10km SE of Cherokee, Oklahoma 6.218 3.1 ml 2015-11-13T01:51:16.800Z 36.9516 -97.8307 18km NNW of Medford, Oklahoma 2.703 3.4 ml 2015-11-12T10:48:13.200Z 36.9661 -97.8492 20km NNW of Medford, Oklahoma 5.457 3 ml 2015-11-12T09:24:27.200Z 35.9197 -97.3397 8km ENE of Guthrie, Oklahoma 5.495 3 ml 2015-11-11T14:54:55.900Z 35.674 -97.3996 7km ENE of Edmond, Oklahoma 5.986 3.4 ml 2015-11-11T10:38:16.900Z 36.6949 -98.2619 10km SE of Cherokee, Oklahoma 6.004 3.4 ml 2015-11-11T01:46:50.100Z 36.9482 -97.8084 17km NNW of Medford, Oklahoma 1.118 3 ml 2015-11-11T01:39:03.600Z 36.9471 -97.8262 17km NNW of Medford, Oklahoma 2.143 3.5 mwr 2015-11-10T23:12:45.900Z 36.6716 -97.7326 15km S of Medford, Oklahoma 5.015 3.1 ml 2015-11-10T19:16:01.500Z 36.9447 -97.8257 17km NNW of Medford, Oklahoma 5 3 ml 2015-11-10T19:13:38.200Z 36.9435 -97.8231 17km NNW of Medford, Oklahoma 3.434 3.5 ml 2015-11-10T14:02:18.400Z 36.9507 -97.8335 18km NNW of Medford, Oklahoma 0.113 3.7 ml 2015-11-10T13:36:45.600Z 35.9825 -96.8077 3km W of Cushing, Oklahoma 4.339 3.3 mwr 2015-11-10T13:11:29.300Z 36.4721 -98.7516 33km NW of Fairview, Oklahoma 2.091 3.2 ml 2015-11-10T08:23:55.800Z 36.7543 -98.0791 24km E of Cherokee, Oklahoma 6.1 3.5 ml 2015-11-10T01:37:50.500Z 36.3193 -97.5538 24km W of Perry, Oklahoma 6.25 3.5 ml 2015-11-09T22:42:06.600Z 37.1223 -97.6172 10km N of Caldwell, Kansas 4.27 3.6 mwr 2015-11-09T10:18:09.900Z 36.7605 -98.0766 25km E of Cherokee, Oklahoma 6.516 3.7 ml 2015-11-09T06:17:42.600Z 36.8489 -97.6892 6km NE of Medford, Oklahoma 5 3 ml 2015-11-08T19:59:06.000Z 35.9803 -96.8185 4km W of Cushing, Oklahoma 4.192 3.5 ml 2015-11-08T08:29:00.000Z 36.9466 -97.836 17km NNW of Medford, Oklahoma 2.954 3.4 ml 2015-11-08T04:04:21.800Z 36.9506 -97.8375 18km NNW of Medford, Oklahoma 3.666 3.5 ml 2015-11-07T23:43:27.900Z 36.9439 -97.8401 17km NNW of Medford, Oklahoma 4.734 3.6 ml 2015-11-07T22:13:18.700Z 36.9498 -97.8386 18km NNW of Medford, Oklahoma 3.207 3.5 ml 2015-11-07T21:07:31.000Z 36.6241 -97.7214 20km S of Medford, Oklahoma 4.963 3.4 ml 2015-11-07T20:10:55.800Z 36.9412 -97.8353 17km NNW of Medford, Oklahoma 2.149 3 ml 2015-11-07T19:27:33.100Z 36.6554 -98.7167 17km SSW of Alva, Oklahoma 3.159 3 ml 2015-11-07T19:20:09.300Z 36.9439 -97.843 18km NNW of Medford, Oklahoma 5 3.1 ml 2015-11-07T18:40:58.000Z 36.9482 -97.8369 18km NNW of Medford, Oklahoma 5 3.1 ml 2015-11-07T18:29:13.400Z 36.9468 -97.8368 18km NNW of Medford, Oklahoma 3.905 3.8 mwr 2015-11-07T11:31:18.500Z 36.9499 -97.8361 18km NNW of Medford, Oklahoma 4.856 3 ml 2015-11-07T11:11:53.900Z 36.9528 -97.8552 19km NNW of Medford, Oklahoma 5 4.1 mwr 2015-11-07T05:30:10.100Z 36.4238 -97.3357 15km NNW of Perry, Oklahoma 5 3 ml 2015-11-07T04:50:08.500Z 36.2639 -97.2395 5km ESE of Perry, Oklahoma 3.81 3.5 mb_lg 2015-11-04T16:38:48.800Z 36.9444 -97.8404 17km NNW of Medford, Oklahoma 2.642 3.2 ml 2015-11-04T15:16:39.200Z 36.9436 -97.8458 18km NNW of Medford, Oklahoma 2.888 3.2 ml 2015-11-04T02:48:06.400Z 36.2977 -97.1748 10km E of Perry, Oklahoma 9.759 3 ml 2015-11-03T17:55:08.600Z 36.3207 -97.5524 23km W of Perry, Oklahoma 3.917 3.1 ml 2015-11-03T16:32:03.500Z 35.9135 -97.2423 3km SSE of Langston, Oklahoma 6.601 3.3 ml 2015-11-03T16:22:47.600Z 36.7665 -98.0791 24km E of Cherokee, Oklahoma 5.864 3.2 ml 2015-11-02T17:44:14.500Z 35.9199 -97.3269 7km WSW of Langston, Oklahoma 5 3 ml 2015-11-02T17:35:39.400Z 35.9181 -97.3303 7km WSW of Langston, Oklahoma 7.158 3.7 ml 2015-11-02T16:57:36.700Z 35.9198 -97.3312 7km WSW of Langston, Oklahoma 5.373 3.9 mwr 2015-10-31T06:14:04.900Z 35.9872 -96.7981 2km W of Cushing, Oklahoma 4.66 3.5 ml 2015-10-30T21:37:58.600Z 36.7355 -98.752 10km SW of Alva, Oklahoma 4.242 3.3 ml 2015-10-30T20:20:20.300Z 36.0739 -97.5736 13km N of Crescent, Oklahoma 4.673 3.6 mwr 2015-10-30T16:52:43.600Z 36.7804 -98.652 3km SSE of Alva, Oklahoma 1.61 3.1 ml 2015-10-30T11:37:06.300Z 35.8561 -97.3552 6km ESE of Guthrie, Oklahoma 5.828 3.2 ml 2015-10-30T04:37:02.220Z 37.1523 -97.6225 13km N of Caldwell, Kansas 4.62 3.4 mwr 2015-10-29T05:43:35.100Z 36.4256 -97.3401 15km NNW of Perry, Oklahoma 1.102 3 ml 2015-10-29T05:26:56.500Z 36.134 -97.3028 17km S of Perry, Oklahoma 1.936 3.3 ml 2015-10-29T01:20:47.100Z 35.8619 -97.3546 6km ESE of Guthrie, Oklahoma 3.84 3.5 ml 2015-10-28T11:59:54.000Z 36.7023 -97.6965 12km SSE of Medford, Oklahoma 0.106 3.1 ml 2015-10-27T21:03:56.000Z 36.6553 -98.7187 17km SSW of Alva, Oklahoma 3.516 3.3 ml 2015-10-27T15:44:41.200Z 36.1762 -97.3871 15km SW of Perry, Oklahoma 4.798 3.1 ml 2015-10-27T10:48:59.700Z 36.2139 -97.5708 26km WSW of Perry, Oklahoma 5 3 ml 2015-10-27T09:13:35.100Z 36.8285 -97.7887 5km WNW of Medford, Oklahoma 2.531 3.4 ml 2015-10-27T03:06:49.380Z 37.1217 -97.6213 10km N of Caldwell, Kansas 4.02 3.6 ml 2015-10-27T02:21:47.500Z 37.122 -97.6177 10km N of Caldwell, Kansas 3.87 3.3 ml 2015-10-26T06:34:00.900Z 36.3662 -97.7008 16km ESE of Enid, Oklahoma 5 3.4 ml Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 23 of 52
Preparer: D. Horne; Date: 02/15/21 Table 2 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Historical Earthquakes in Oklahoma Greater than 3.0 Magnitude (As of February 9, 2021)
Date and Time Latitude Longitude Epicenter Depth (km) Magnitude Mag. Type1 2015-10-25T05:05:14.100Z 36.1857 -98.811 21km NE of Taloga, Oklahoma 7.132 3 ml 2015-10-24T22:08:09.000Z 36.8302 -97.7883 5km WNW of Medford, Oklahoma 5.446 3.5 ml 2015-10-24T21:13:07.800Z 36.8304 -97.7932 5km WNW of Medford, Oklahoma 5.308 3.2 ml 2015-10-24T16:27:02.430Z 37.2292 -97.9598 8km SE of Harper, Kansas 2.72 3 ml 2015-10-24T05:57:56.500Z 36.7833 -97.5441 17km E of Medford, Oklahoma 5.562 3.2 ml 2015-10-22T01:33:33.200Z 36.9385 -98.0212 23km S of Anthony, Kansas 5.904 3.1 ml 2015-10-19T15:42:09.500Z 36.8989 -97.6529 12km NE of Medford, Oklahoma 5 3.2 ml 2015-10-19T05:22:51.000Z 36.761 -98.0721 25km E of Cherokee, Oklahoma 4.089 3.2 ml 2015-10-19T04:55:29.400Z 36.7346 -97.8401 12km SW of Medford, Oklahoma 5.648 3.1 mwr 2015-10-19T00:08:50.650Z 37.1192 -97.6185 9km N of Caldwell, Kansas 3.79 3 ml 2015-10-18T05:07:34.200Z 35.8532 -97.3492 7km ESE of Guthrie, Oklahoma 5.582 3.1 ml 2015-10-18T03:12:51.700Z 35.853 -97.35 7km ESE of Guthrie, Oklahoma 5.8 3.3 ml 2015-10-17T13:20:00.640Z 37.0575 -97.934 13km SE of Anthony, Kansas 5.82 3.4 mwr 2015-10-17T12:12:49.970Z 37.0537 -97.9413 13km SE of Anthony, Kansas 6.21 3.4 mwr 2015-10-17T10:15:13.000Z 35.9768 -96.8208 4km W of Cushing, Oklahoma 4.29 3 ml 2015-10-15T11:28:02.500Z 36.7589 -98.0695 25km E of Cherokee, Oklahoma 6.489 3 ml 2015-10-15T07:32:19.100Z 36.1819 -97.367 13km SSW of Perry, Oklahoma 6.512 3.1 ml 2015-10-15T06:50:03.100Z 35.8566 -97.3464 7km ESE of Guthrie, Oklahoma 4.847 3.5 ml 2015-10-14T23:56:26.100Z 36.3469 -96.7753 2km ENE of Pawnee, Oklahoma 5 3 ml 2015-10-14T22:27:20.300Z 36.0745 -97.5824 13km N of Crescent, Oklahoma 4.494 3.4 ml 2015-10-14T02:18:36.300Z 35.9978 -96.7698 1km N of Cushing, Oklahoma 0.445 3.1 ml 2015-10-13T18:51:06.000Z 36.2783 -97.5121 20km W of Perry, Oklahoma 8.378 3.2 ml 2015-10-12T22:52:06.300Z 36.5742 -97.0936 12km SSW of McCord, Oklahoma 7.696 3.4 ml 2015-10-12T17:11:35.300Z 36.5688 -97.0992 13km SSW of McCord, Oklahoma 4.868 3 ml 2015-10-12T14:11:16.000Z 36.329 -96.7763 2km ESE of Pawnee, Oklahoma 5.697 3 ml 2015-10-12T10:22:58.480Z 37.2128 -97.9815 7km NNE of Anthony, Kansas 4.35 3 ml 2015-10-12T09:33:48.900Z 36.2842 -97.504 19km W of Perry, Oklahoma 5 3.2 ml 2015-10-12T08:29:27.600Z 36.7611 -98.0692 25km E of Cherokee, Oklahoma 6.378 3.3 ml 2015-10-11T23:46:15.750Z 37.0568 -97.9338 13km SE of Anthony, Kansas 5.95 3 ml 2015-10-11T10:27:13.700Z 36.3205 -97.5574 24km W of Perry, Oklahoma 7.824 3.5 mwr 2015-10-11T08:49:51.300Z 36.5908 -98.3872 11km WNW of Helena, Oklahoma 5 3.3 ml 2015-10-10T23:43:22.800Z 35.9781 -96.8184 4km W of Cushing, Oklahoma 4.689 3.3 ml 2015-10-10T22:20:55.400Z 35.9897 -96.7828 1km WNW of Cushing, Oklahoma 4.474 3 ml 2015-10-10T22:07:05.400Z 35.9862 -96.7981 2km W of Cushing, Oklahoma 4.694 3.1 ml 2015-10-10T22:03:05.300Z 35.986 -96.8032 3km W of Cushing, Oklahoma 3.274 4.3 mwr 2015-10-10T15:20:48.300Z 36.7234 -97.9299 19km WSW of Medford, Oklahoma 5.716 3.5 mwr 2015-10-10T09:20:43.000Z 36.7187 -97.9311 20km WSW of Medford, Oklahoma 5.629 4.4 mwr 2015-10-10T03:08:10.000Z 36.3573 -97.3745 10km NW of Perry, Oklahoma 7.955 3.1 ml 2015-10-10T01:25:49.380Z 37.2142 -97.9802 8km NNE of Anthony, Kansas 4.45 3.3 ml 2015-10-10T01:23:32.480Z 37.2123 -97.9803 7km NE of Anthony, Kansas 4.16 3 ml 2015-10-10T00:20:20.000Z 36.8414 -97.8147 8km WNW of Medford, Oklahoma 5.819 3.4 ml 2015-10-09T21:57:50.700Z 36.4906 -98.7225 32km NW of Fairview, Oklahoma 2.342 3.4 ml 2015-10-09T09:13:52.900Z 35.9355 -96.7741 5km S of Cushing, Oklahoma 3.565 3.1 ml 2015-10-08T02:45:30.100Z 35.9923 -96.791 2km WNW of Cushing, Oklahoma 5 3 ml 2015-10-07T22:38:59.400Z 36.3656 -97.4514 16km WNW of Perry, Oklahoma 7.571 3 ml 2015-10-07T11:48:35.700Z 36.1182 -97.3038 19km S of Perry, Oklahoma 5.982 3 ml 2015-10-06T20:39:00.700Z 36.9365 -98.0359 24km S of Anthony, Kansas 4.974 3 ml 2015-10-06T12:05:06.500Z 36.2667 -97.3407 5km WSW of Perry, Oklahoma 4.499 3.4 ml 2015-10-05T06:53:01.800Z 36.7769 -98.1898 15km E of Cherokee, Oklahoma 6.033 3.8 ml 2015-10-05T06:52:50.400Z 36.7669 -98.1799 15km E of Cherokee, Oklahoma 6.282 3.4 ml 2015-10-04T19:53:56.800Z 36.6364 -98.1943 12km NE of Helena, Oklahoma 6.095 3 ml 2015-10-03T05:11:58.340Z 37.1015 -97.7032 11km NW of Caldwell, Kansas 5.67 3.4 ml 2015-10-02T12:57:19.100Z 35.7996 -96.6805 6km NNW of Stroud, Oklahoma 4.475 3.2 ml 2015-10-02T06:25:39.700Z 36.3409 -97.0494 22km ENE of Perry, Oklahoma 2.956 3.1 ml 2015-10-02T05:58:52.800Z 36.6274 -98.2138 10km NNE of Helena, Oklahoma 6.41 3.5 mwr 2015-10-01T07:47:33.000Z 36.2541 -97.2343 6km SE of Perry, Oklahoma 7.993 3.2 ml 2015-10-01T05:56:35.500Z 36.252 -97.2268 6km SE of Perry, Oklahoma 5.983 3.7 mwr 2015-09-30T08:28:17.300Z 36.7149 -98.4457 9km WSW of Cherokee, Oklahoma 4.911 3.3 ml 2015-09-29T23:17:28.800Z 36.6273 -98.2122 10km NNE of Helena, Oklahoma 6.147 3.3 ml 2015-09-29T12:40:00.700Z 36.6276 -98.2139 10km NNE of Helena, Oklahoma 6.186 3.1 ml 2015-09-28T12:58:31.700Z 36.8411 -98.2448 13km NE of Cherokee, Oklahoma 4.467 3 ml 2015-09-27T21:59:43.650Z 35.9894 -96.8061 3km W of Cushing, Oklahoma 2.67 3.2 mb_lg 2015-09-27T21:59:43.310Z 35.9856 -96.797 2km W of Cushing, Oklahoma 5.1 3.6 ml Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 24 of 52
Preparer: D. Horne; Date: 02/15/21 Table 2 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Historical Earthquakes in Oklahoma Greater than 3.0 Magnitude (As of February 9, 2021)
Date and Time Latitude Longitude Epicenter Depth (km) Magnitude Mag. Type1 2015-09-27T13:42:47.200Z 36.9031 -97.9099 18km NW of Medford, Oklahoma 3.903 3 ml 2015-09-25T22:30:31.200Z 36.2657 -98.5337 4km W of Fairview, Oklahoma 7.105 3.2 ml 2015-09-25T06:02:58.000Z 36.5267 -98.4576 16km W of Helena, Oklahoma 0.799 3.4 ml 2015-09-25T01:59:03.600Z 35.9932 -96.7899 2km WNW of Cushing, Oklahoma 0.488 3.1 mwr 2015-09-25T01:16:37.700Z 35.987 -96.7872 1km W of Cushing, Oklahoma 2.893 4 mwr 2015-09-24T08:29:25.600Z 36.7396 -98.3618 1km SSW of Cherokee, Oklahoma 7.733 3.2 ml 2015-09-23T04:05:24.700Z 35.5944 -97.4025 8km NNW of Spencer, Oklahoma 5.571 3.1 ml 2015-09-22T12:29:21.800Z 36.2878 -97.5076 19km W of Perry, Oklahoma 4.629 3 ml 2015-09-22T09:22:11.430Z 36.8302 -98.2355 13km NE of Cherokee, Oklahoma 5 3.3 mb_lg 2015-09-22T06:33:53.000Z 36.2911 -98.1903 22km NNE of Okeene, Oklahoma 4.924 3.3 mwr 2015-09-21T19:50:27.600Z 36.2662 -98.5315 4km W of Fairview, Oklahoma 6.167 3.8 ml 2015-09-21T02:48:31.700Z 36.269 -98.5169 3km W of Fairview, Oklahoma 0.78 3.1 ml 2015-09-20T21:39:56.100Z 35.901 -97.2545 4km S of Langston, Oklahoma 5 3.1 ml 2015-09-20T13:06:22.500Z 35.9836 -96.8064 3km W of Cushing, Oklahoma 4.789 3.2 ml 2015-09-20T11:17:52.620Z 37.0495 -97.915 15km SE of Anthony, Kansas 5.85 3 ml 2015-09-19T05:20:03.000Z 35.9878 -96.7963 2km W of Cushing, Oklahoma 4.478 3.1 ml 2015-09-19T05:16:26.600Z 35.9861 -96.7964 2km W of Cushing, Oklahoma 4.573 3 ml 2015-09-19T04:20:12.700Z 36.3331 -96.791 1km ESE of Pawnee, Oklahoma 5 3.1 ml 2015-09-18T23:51:56.310Z 36.8125 -97.8086 6km W of Medford, Oklahoma 3.11 3.1 mb_lg 2015-09-18T13:10:02.780Z 36.2769 -97.5182 20km W of Perry, Oklahoma 5 3.2 mb_lg 2015-09-18T12:35:16.600Z 35.9931 -96.7997 3km WNW of Cushing, Oklahoma 0.208 4.1 mwr 2015-09-18T09:33:00.300Z 35.9834 -96.7962 2km W of Cushing, Oklahoma 4.327 3 ml 2015-09-18T09:16:55.900Z 35.9909 -96.7943 2km WNW of Cushing, Oklahoma 5 3.2 mwr 2015-09-18T02:12:00.440Z 37.473 -98.9575 27km SW of Pratt, Kansas 5.39 3.4 mwr 2015-09-17T15:03:29.500Z 36.8433 -97.8111 7km WNW of Medford, Oklahoma 4.889 3.1 ml 2015-09-16T19:34:02.100Z 36.2801 -97.5128 20km W of Perry, Oklahoma 9.424 3 ml 2015-09-16T15:17:36.300Z 36.3334 -96.7918 1km ESE of Pawnee, Oklahoma 5 3.3 ml 2015-09-16T12:09:52.500Z 36.3288 -96.7891 1km SE of Pawnee, Oklahoma 3.093 3.2 mwr 2015-09-16T04:48:01.000Z 36.4802 -98.9418 24km E of Mooreland, Oklahoma 10.742 3.7 mwr 2015-09-16T02:30:01.900Z 35.9778 -96.7949 2km WSW of Cushing, Oklahoma 4.019 3.7 mwr 2015-09-15T23:45:32.690Z 36.482 -98.921 25km E of Mooreland, Oklahoma 5 3.6 ml 2015-09-15T22:57:13.200Z 36.4821 -98.9374 24km ENE of Mooreland, Oklahoma 6.273 3.4 ml 2015-09-15T16:28:43.200Z 35.671 -97.415 6km ENE of Edmond, Oklahoma 3.076 3.1 ml 2015-09-15T13:58:40.800Z 35.5128 -97.3032 3km WNW of Choctaw, Oklahoma 6.372 3 ml 2015-09-15T02:12:31.200Z 36.0732 -97.4407 19km NE of Crescent, Oklahoma 2.087 3 ml 2015-09-14T17:25:29.100Z 35.7437 -97.3552 15km NE of Edmond, Oklahoma 5.391 3.3 ml 2015-09-14T07:04:30.200Z 36.2785 -97.5116 20km W of Perry, Oklahoma 6.851 3.1 ml 2015-09-14T02:06:24.500Z 36.0713 -97.4386 19km NE of Crescent, Oklahoma 5.197 3.1 ml 2015-09-14T00:04:52.700Z 36.0694 -97.439 19km NE of Crescent, Oklahoma 5.387 3.2 ml 2015-09-12T13:47:08.800Z 35.7444 -97.3549 15km NE of Edmond, Oklahoma 6.457 3.1 ml 2015-09-12T10:55:44.300Z 35.9853 -97.5616 4km NE of Crescent, Oklahoma 6.369 3.2 ml 2015-09-12T00:55:33.250Z 37.059 -97.9318 13km SE of Anthony, Kansas 6.25 3.3 ml 2015-09-10T19:26:57.300Z 36.9027 -97.6825 11km NNE of Medford, Oklahoma 6.56 3.4 mwr 2015-09-10T18:41:33.800Z 36.0301 -97.1221 10km NW of Perkins, Oklahoma 5.336 3.1 ml 2015-09-10T01:05:28.000Z 36.1808 -97.4857 21km SW of Perry, Oklahoma 5.638 3.3 ml 2015-09-09T03:42:48.800Z 36.1824 -97.4975 22km WSW of Perry, Oklahoma 3.473 3.5 mwr 2015-09-08T21:26:20.400Z 36.178 -97.4857 21km SW of Perry, Oklahoma 5.819 3.3 ml 2015-09-08T03:34:22.500Z 36.5293 -98.4921 19km W of Helena, Oklahoma 4.592 3 ml 2015-09-02T23:52:24.000Z 36.9389 -98.0182 23km S of Anthony, Kansas 5.589 3.4 ml 2015-09-02T14:01:26.240Z 35.949 -96.781 4km SSW of Cushing, Oklahoma 3.7 3.3 mwr 2015-09-02T13:50:02.530Z 36.488 -98.511 22km WSW of Helena, Oklahoma 4.4 3.5 mwr 2015-09-01T18:00:46.400Z 35.9507 -96.7805 4km SSW of Cushing, Oklahoma 4.102 3 ml 2015-09-01T11:41:00.080Z 37.0607 -97.5232 8km ENE of Caldwell, Kansas 5.98 3.1 ml 2015-09-01T09:43:50.000Z 35.9486 -96.7844 4km SSW of Cushing, Oklahoma 3.892 3.4 ml 2015-08-31T14:44:09.200Z 36.7851 -98.4536 9km WNW of Cherokee, Oklahoma 0.123 3.5 ml 2015-08-31T01:04:03.200Z 35.7457 -97.359 14km NE of Edmond, Oklahoma 5 3 ml 2015-08-30T12:19:23.900Z 35.675 -97.399 7km ENE of Edmond, Oklahoma 6.01 3.4 mwr 2015-08-30T08:27:26.300Z 36.8066 -98.3452 5km N of Cherokee, Oklahoma 4.67 3.5 ml 2015-08-30T06:16:10.300Z 36.5111 -99.0493 16km ENE of Mooreland, Oklahoma 0.876 3.1 ml 2015-08-30T01:08:33.100Z 36.6379 -97.6453 20km SSE of Medford, Oklahoma 5.383 3 ml 2015-08-29T14:39:05.960Z 37.06 -97.5243 7km ENE of Caldwell, Kansas 5.91 3.1 ml 2015-08-29T00:36:19.100Z 36.0307 -97.1211 10km SSW of Stillwater, Oklahoma 5.016 3.1 ml 2015-08-28T22:05:54.700Z 36.076 -97.5812 13km N of Crescent, Oklahoma 5.228 3.3 ml Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 25 of 52
Preparer: D. Horne; Date: 02/15/21 Table 2 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Historical Earthquakes in Oklahoma Greater than 3.0 Magnitude (As of February 9, 2021)
Date and Time Latitude Longitude Epicenter Depth (km) Magnitude Mag. Type1 2015-08-27T00:56:22.900Z 36.8497 -97.6976 5km NE of Medford, Oklahoma 4.476 3 ml 2015-08-26T07:41:06.000Z 36.9367 -97.6841 12km SSW of Caldwell, Kansas 5 3 ml 2015-08-26T07:33:07.000Z 36.8844 -98.1341 24km NE of Cherokee, Oklahoma 0 3.4 ml 2015-08-26T05:05:27.800Z 36.2767 -97.2667 2km SE of Perry, Oklahoma 4.469 3.2 ml 2015-08-25T22:04:53.230Z 36.2788 -97.2812 1km SSE of Perry, Oklahoma 3.84 3 mb_lg 2015-08-25T12:59:25.300Z 36.0338 -97.1195 10km SSW of Stillwater, Oklahoma 3.263 3.3 mwr 2015-08-25T12:18:37.000Z 36.8561 -97.3994 11km WNW of Blackwell, Oklahoma 5.381 3 ml 2015-08-25T03:34:49.300Z 36.0024 -97.1037 7km WNW of Perkins, Oklahoma 2.442 3.1 ml 2015-08-24T16:09:41.590Z 35.829 -97.406 5km SSE of Guthrie, Oklahoma 5.8 3 ml 2015-08-23T16:21:35.300Z 36.0299 -97.1194 9km NW of Perkins, Oklahoma 5.773 3.3 mwr 2015-08-23T15:00:57.000Z 36.5972 -97.698 23km S of Medford, Oklahoma 6.835 3.3 ml 2015-08-23T13:53:07.660Z 36.282 -97.511 20km W of Perry, Oklahoma 3.55 3.1 mb_lg 2015-08-23T04:30:12.400Z 36.7647 -98.5403 12km ESE of Alva, Oklahoma 2.12 3.4 ml 2015-08-22T08:46:49.500Z 36.8416 -97.8271 9km WNW of Medford, Oklahoma 5.256 3.8 mwr 2015-08-20T13:17:54.960Z 37.0535 -97.9138 15km SE of Anthony, Kansas 6.26 3.4 ml 2015-08-20T08:28:11.440Z 36.2877 -97.5317 21km W of Perry, Oklahoma 1.11 3.3 mwr 2015-08-20T00:49:17.700Z 36.8484 -98.2548 13km NE of Cherokee, Oklahoma 3.933 3.5 ml 2015-08-20T00:47:12.700Z 36.8441 -98.2687 12km NE of Cherokee, Oklahoma 4.001 3.6 mwr 2015-08-19T23:13:47.300Z 36.5508 -98.4616 17km W of Helena, Oklahoma 5.227 3.3 ml 2015-08-18T04:40:29.930Z 36.2915 -97.533 22km W of Perry, Oklahoma 6.84 3.3 ml 2015-08-17T11:53:56.400Z 35.336 -96.67 12km N of Seminole, Oklahoma 5.4 3.3 ml 2015-08-17T10:57:32.100Z 36.8963 -97.686 10km NNE of Medford, Oklahoma 1.516 3.3 ml 2015-08-16T11:06:36.700Z 36.9308 -97.6796 12km SSW of Caldwell, Kansas 2.167 3.1 ml 2015-08-16T08:49:50.700Z 36.8398 -97.8231 8km WNW of Medford, Oklahoma 4.25 3.4 ml 2015-08-16T00:00:58.300Z 36.8433 -97.8222 8km WNW of Medford, Oklahoma 3.382 3 ml 2015-08-15T12:36:25.700Z 35.984 -97.5508 5km NE of Crescent, Oklahoma 5.372 3 ml 2015-08-15T03:34:22.000Z 36.4813 -98.9184 26km E of Mooreland, Oklahoma 6.467 3.2 ml 2015-08-14T21:25:40.600Z 36.8311 -97.8011 6km WNW of Medford, Oklahoma 0.091 4.1 mwr 2015-08-13T20:02:10.810Z 36.0809 -97.22 15km WSW of Stillwater, Oklahoma 5 3.3 mwr 2015-08-13T17:15:03.900Z 36.8478 -97.8797 13km WNW of Medford, Oklahoma 5 3.3 ml 2015-08-13T14:48:09.700Z 35.7455 -97.39 13km NE of Edmond, Oklahoma 6.15 3.1 ml 2015-08-13T13:59:41.800Z 35.7451 -97.3894 13km NE of Edmond, Oklahoma 5 3.4 ml 2015-08-13T04:15:25.990Z 36.2783 -97.5198 20km W of Perry, Oklahoma 5.4 3.1 mwr 2015-08-13T00:36:59.200Z 36.8171 -97.6173 10km E of Medford, Oklahoma 4.842 3 ml 2015-08-11T04:49:06.500Z 36.6214 -97.8112 21km SSW of Medford, Oklahoma 5 3 ml 2015-08-10T20:47:35.560Z 36.9726 -97.9597 21km SSE of Anthony, Kansas 5 3.1 mb_lg 2015-08-10T17:39:38.300Z 36.6773 -98.1522 17km NE of Helena, Oklahoma 5.705 3.5 ml 2015-08-10T01:44:13.600Z 36.9297 -97.6816 13km SSW of Caldwell, Kansas 0.113 3 ml 2015-08-09T16:26:34.300Z 36.7893 -98.2648 9km ENE of Cherokee, Oklahoma 4.936 3.1 ml 2015-08-09T07:05:33.200Z 36.8348 -97.7968 6km WNW of Medford, Oklahoma 0.672 3.5 ml 2015-08-09T02:56:18.500Z 35.439 -97.109 1km WNW of McLoud, Oklahoma 6.9 3.6 ml 2015-08-08T13:57:32.950Z 37.0518 -97.9182 15km SE of Anthony, Kansas 6.98 3.2 ml 2015-08-08T01:48:09.400Z 36.1999 -96.7535 10km NNW of Yale, Oklahoma 4.327 3.3 ml 2015-08-07T21:43:03.000Z 35.937 -97.0753 5km SW of Perkins, Oklahoma 4.663 3 ml 2015-08-07T14:51:58.800Z 36.6936 -98.664 12km S of Alva, Oklahoma 2.407 3.1 ml 2015-08-07T03:04:12.800Z 35.4348 -96.5201 7km SSW of Boley, Oklahoma 3.501 3 ml 2015-08-06T03:51:14.500Z 36.5353 -97.8395 15km NNE of Enid, Oklahoma 4.69 3.1 ml 2015-08-05T23:09:33.700Z 36.63 -97.812 20km SSW of Medford, Oklahoma 3.062 3.3 ml 2015-08-05T15:55:11.300Z 36.6587 -97.7235 16km S of Medford, Oklahoma 8.782 3 ml 2015-08-05T14:23:48.920Z 36.2812 -97.5334 22km W of Perry, Oklahoma 5 3.2 mwr 2015-08-05T13:07:12.700Z 35.9209 -97.3349 7km WSW of Langston, Oklahoma 5.448 3.2 ml 2015-08-05T12:01:12.600Z 36.8315 -97.8011 6km WNW of Medford, Oklahoma 2.567 3.5 ml 2015-08-05T07:48:02.300Z 36.5979 -97.6921 23km S of Medford, Oklahoma 6.021 4 ml 2015-08-05T07:30:01.000Z 36.5972 -97.6914 23km S of Medford, Oklahoma 6.704 3.4 ml 2015-08-05T03:42:30.880Z 36.2883 -97.5218 20km W of Perry, Oklahoma 7.63 3.2 ml 2015-08-04T22:54:23.100Z 35.7955 -97.3163 13km SE of Guthrie, Oklahoma 0.106 3 ml 2015-08-04T18:16:29.600Z 36.838 -97.804 7km WNW of Medford, Oklahoma 3.692 3.4 ml 2015-08-04T08:58:09.900Z 36.836 -98.2917 10km NNE of Cherokee, Oklahoma 4.303 3.2 ml 2015-08-03T22:08:40.900Z 36.689 -98.6069 13km SSE of Alva, Oklahoma 4.033 3.1 ml 2015-08-02T14:43:51.300Z 36.765 -98.542 11km ESE of Alva, Oklahoma 6.3 3 ml 2015-08-01T20:28:48.500Z 36.6836 -97.8592 17km SW of Medford, Oklahoma 6.607 3.3 mwr 2015-07-31T13:26:55.700Z 36.0594 -97.2497 12km N of Langston, Oklahoma 2.195 3.3 ml 2015-07-31T01:39:21.400Z 35.9798 -97.5559 4km NE of Crescent, Oklahoma 0.133 3.3 ml Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 26 of 52
Preparer: D. Horne; Date: 02/15/21 Table 2 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Historical Earthquakes in Oklahoma Greater than 3.0 Magnitude (As of February 9, 2021)
Date and Time Latitude Longitude Epicenter Depth (km) Magnitude Mag. Type1 2015-07-28T12:30:36.800Z 35.9851 -97.5565 4km NE of Crescent, Oklahoma 4.536 3.3 ml 2015-07-28T08:11:57.500Z 36.2874 -97.5162 20km W of Perry, Oklahoma 7.414 3.5 ml 2015-07-28T01:18:27.200Z 35.9909 -97.5813 4km NNE of Crescent, Oklahoma 5.253 4.1 mwr 2015-07-28T00:24:03.400Z 35.9886 -97.5789 4km NNE of Crescent, Oklahoma 4.658 3.5 ml 2015-07-27T19:27:56.900Z 35.9885 -97.577 4km NNE of Crescent, Oklahoma 5 3 ml 2015-07-27T18:12:15.400Z 35.9889 -97.5717 4km NNE of Crescent, Oklahoma 5 4.5 mwr 2015-07-27T17:49:27.900Z 35.9908 -97.56 5km NE of Crescent, Oklahoma 4.01 3.8 mwr 2015-07-27T17:06:30.500Z 35.9875 -97.5606 4km NE of Crescent, Oklahoma 5.647 3.4 ml 2015-07-27T12:31:46.600Z 35.9886 -97.5602 5km NE of Crescent, Oklahoma 5.68 3 ml 2015-07-27T09:25:04.800Z 36.8348 -97.8067 7km WNW of Medford, Oklahoma 5 3.2 ml 2015-07-26T13:26:50.480Z 35.9983 -97.5691 5km NNE of Crescent, Oklahoma 4.19 3.2 mb_lg 2015-07-26T11:30:47.300Z 36.519 -99.009 19km ENE of Mooreland, Oklahoma 5 3.2 ml 2015-07-26T09:54:33.600Z 35.989 -97.5694 4km NNE of Crescent, Oklahoma 5.468 3.6 mwr 2015-07-26T09:15:05.500Z 35.95 -96.78 4km SSW of Cushing, Oklahoma 5.1 3 ml 2015-07-26T06:59:44.600Z 35.9877 -97.5661 4km NNE of Crescent, Oklahoma 5.964 3.2 ml 2015-07-25T11:14:44.100Z 35.9902 -97.5661 4km NNE of Crescent, Oklahoma 4.269 3.7 mwr 2015-07-25T08:47:53.100Z 36.3397 -96.8201 1km W of Pawnee, Oklahoma 1.296 3 ml 2015-07-25T04:49:02.700Z 36.159 -96.948 11km ENE of Stillwater, Oklahoma 4.2 3 ml 2015-07-25T04:10:33.700Z 36.6047 -97.6149 24km SSE of Medford, Oklahoma 5.161 3.2 ml 2015-07-24T16:21:23.000Z 36.8416 -98.2303 14km NE of Cherokee, Oklahoma 5.208 3.1 ml 2015-07-24T16:01:01.700Z 36.296 -97.5234 21km W of Perry, Oklahoma 8.233 3.1 ml 2015-07-24T12:31:13.900Z 36.615 -98.4056 14km WNW of Helena, Oklahoma 3.497 3.5 mwr 2015-07-23T17:33:19.900Z 35.4476 -97.1152 2km WNW of McLoud, Oklahoma 6.039 3 ml 2015-07-23T13:28:57.500Z 36.3404 -96.8037 0km N of Pawnee, Oklahoma 5 3.3 ml 2015-07-23T12:20:55.500Z 36.3439 -96.7945 1km NE of Pawnee, Oklahoma 4.323 3.3 ml 2015-07-22T10:48:27.300Z 36.6004 -97.6848 23km S of Medford, Oklahoma 6.216 3.2 ml 2015-07-22T01:19:30.800Z 36.8464 -98.2284 15km NE of Cherokee, Oklahoma 0.149 3.2 ml 2015-07-21T18:24:08.200Z 36.8367 -98.2445 13km NE of Cherokee, Oklahoma 5.338 3.5 ml 2015-07-21T13:10:54.020Z 36.284 -97.638 23km E of Waukomis, Oklahoma 4 3 ml 2015-07-21T11:16:13.800Z 36.837 -98.245 13km NE of Cherokee, Oklahoma 5 3.1 mwr 2015-07-21T09:08:41.600Z 36.834 -98.25 12km NE of Cherokee, Oklahoma 4.946 3.5 ml 2015-07-21T08:46:54.100Z 36.2821 -97.6428 22km E of Waukomis, Oklahoma 2.959 3.2 mwr 2015-07-21T07:38:28.900Z 36.2807 -97.4588 15km W of Perry, Oklahoma 1.106 3 ml 2015-07-21T05:02:04.400Z 36.6 -97.6892 23km S of Medford, Oklahoma 5.696 3.3 ml 2015-07-21T02:10:21.400Z 36.8477 -98.2588 13km NE of Cherokee, Oklahoma 3.909 3.4 ml 2015-07-20T20:54:32.100Z 36.8458 -98.2516 13km NE of Cherokee, Oklahoma 5 3.7 mwr 2015-07-20T20:50:16.000Z 36.3875 -96.8597 7km NW of Pawnee, Oklahoma 5 3.4 ml 2015-07-20T20:19:03.400Z 36.842 -98.2593 13km NE of Cherokee, Oklahoma 4.079 4.4 mwr 2015-07-20T03:33:24.000Z 36.8713 -97.895 16km WNW of Medford, Oklahoma 3.961 3.1 ml 2015-07-17T12:30:37.800Z 36.5245 -98.4652 17km W of Helena, Oklahoma 4.632 3.6 mwr 2015-07-15T08:57:15.900Z 35.9874 -97.5652 4km NE of Crescent, Oklahoma 4.136 3.4 mwr 2015-07-14T10:58:51.900Z 35.8174 -97.4461 7km SSW of Guthrie, Oklahoma 4.783 3.2 ml 2015-07-14T08:22:15.000Z 34.9775 -97.6798 17km S of Blanchard, Oklahoma 4.776 3.2 mwr 2015-07-14T01:33:58.700Z 35.7419 -97.5763 13km NW of Edmond, Oklahoma 6.169 3.4 ml 2015-07-12T22:37:21.700Z 36.8682 -98.0086 25km WNW of Medford, Oklahoma 5.425 3.1 ml 2015-07-11T21:52:09.100Z 36.5264 -98.4653 17km W of Helena, Oklahoma 5 3.1 ml 2015-07-11T09:23:35.300Z 36.0247 -97.1049 8km NW of Perkins, Oklahoma 3.855 3.7 mwr 2015-07-11T01:21:19.700Z 36.294 -97.523 21km W of Perry, Oklahoma 7.2 3.1 ml 2015-07-11T00:56:53.000Z 36.2891 -97.5168 20km W of Perry, Oklahoma 7.44 3.6 ml 2015-07-10T23:09:16.700Z 36.662 -98.2852 12km SSE of Cherokee, Oklahoma 5.426 3.7 mwr 2015-07-10T09:58:56.700Z 36.5222 -98.4682 17km W of Helena, Oklahoma 4.243 3.5 ml 2015-07-09T06:45:19.600Z 35.6663 -97.0947 9km E of Luther, Oklahoma 5 3 ml 2015-07-08T16:33:28.700Z 35.7412 -97.3835 13km NE of Edmond, Oklahoma 6.21 3.4 ml 2015-07-08T01:13:20.500Z 36.8427 -97.8828 13km WNW of Medford, Oklahoma 5.499 3 ml 2015-07-07T10:53:12.300Z 35.7443 -97.3747 13km NE of Edmond, Oklahoma 5 3.1 ml 2015-07-06T06:20:39.700Z 35.7446 -97.3762 13km NE of Edmond, Oklahoma 5.581 3.3 ml 2015-07-04T21:00:27.700Z 36.52 -98.4749 18km W of Helena, Oklahoma 3.151 3.6 ml 2015-07-04T12:33:51.500Z 36.7615 -97.5569 16km ESE of Medford, Oklahoma 5 3.1 ml 2015-07-04T11:57:56.600Z 36.281 -97.516 20km W of Perry, Oklahoma 5.7 3.3 mwr 2015-07-04T01:05:22.700Z 36.293 -96.861 7km SW of Pawnee, Oklahoma 3.8 3.4 mwr 2015-07-03T10:43:54.500Z 36.757 -97.565 16km ESE of Medford, Oklahoma 6.445 3 ml 2015-07-03T05:19:31.600Z 36.2812 -97.5192 20km W of Perry, Oklahoma 5 3.5 mwr 2015-07-02T22:40:35.000Z 36.8242 -97.7204 2km NNE of Medford, Oklahoma 4.914 3.1 ml Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 27 of 52
Preparer: D. Horne; Date: 02/15/21 Table 2 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Historical Earthquakes in Oklahoma Greater than 3.0 Magnitude (As of February 9, 2021)
Date and Time Latitude Longitude Epicenter Depth (km) Magnitude Mag. Type1 2015-07-02T20:28:37.200Z 36.4207 -97.3336 15km NNW of Perry, Oklahoma 5 3.2 ml 2015-07-01T21:59:53.800Z 36.0707 -97.437 19km NE of Crescent, Oklahoma 5.508 3.3 ml 2015-07-01T17:15:47.900Z 36.0912 -97.1003 4km SW of Stillwater, Oklahoma 3.848 3.5 mwr 2015-06-30T21:42:00.300Z 35.9159 -97.3133 6km WSW of Langston, Oklahoma 5.079 3.2 ml 2015-06-30T11:20:07.600Z 35.594 -97.373 7km N of Spencer, Oklahoma 4.3 3.3 ml 2015-06-29T04:12:37.400Z 36.9196 -97.8632 17km NW of Medford, Oklahoma 0.165 3.5 ml 2015-06-29T02:46:07.900Z 36.9507 -97.6913 11km SW of Caldwell, Kansas 5 3.1 ml 2015-06-28T22:38:25.400Z 36.3203 -96.8228 2km SW of Pawnee, Oklahoma 3.41 3.1 ml 2015-06-28T15:36:50.700Z 36.0789 -97.5853 14km N of Crescent, Oklahoma 5.642 3.1 ml 2015-06-28T14:37:15.400Z 36.2889 -97.5203 20km W of Perry, Oklahoma 6.481 3.3 ml 2015-06-28T01:35:19.700Z 36.6779 -98.1617 17km NNE of Helena, Oklahoma 5 3.4 mwr 2015-06-27T22:49:06.800Z 36.5909 -97.5649 24km WSW of Tonkawa, Oklahoma 5.961 3.1 ml 2015-06-27T20:09:16.400Z 36.9449 -97.6328 9km SSW of Caldwell, Kansas 5.357 3 ml 2015-06-27T13:03:03.200Z 36.5373 -97.7295 20km NE of Enid, Oklahoma 4.994 3 ml 2015-06-27T03:31:28.200Z 36.7458 -98.2238 11km E of Cherokee, Oklahoma 4.61 3.5 mwr 2015-06-27T02:38:11.700Z 35.8769 -97.0439 10km S of Perkins, Oklahoma 5 3 ml 2015-06-27T00:56:43.000Z 36.8519 -97.6976 5km NNE of Medford, Oklahoma 6.76 3.2 ml 2015-06-26T10:49:58.800Z 35.74 -97.379 13km NE of Edmond, Oklahoma 4.8 3.4 ml 2015-06-26T10:18:35.700Z 36.101 -97.344 19km NNW of Langston, Oklahoma 5 3.1 ml 2015-06-26T06:19:23.200Z 35.7436 -97.3771 13km NE of Edmond, Oklahoma 5.752 3.4 ml 2015-06-26T05:54:03.800Z 35.7417 -97.3796 13km NE of Edmond, Oklahoma 5 3.7 mwr 2015-06-26T04:35:56.300Z 35.739 -97.388 12km NE of Edmond, Oklahoma 4.9 3.5 mwr 2015-06-25T12:54:25.000Z 35.8185 -97.4388 6km S of Guthrie, Oklahoma 4.04 3 ml 2015-06-25T06:03:06.800Z 36.7312 -98.3156 4km SE of Cherokee, Oklahoma 5.73 3.1 ml 2015-06-23T17:37:55.400Z 36.688 -98.6114 13km SSE of Alva, Oklahoma 4.526 3.4 ml 2015-06-22T22:16:20.800Z 35.743 -97.3876 12km NE of Edmond, Oklahoma 5.534 3.9 mwr 2015-06-22T21:09:27.900Z 35.7499 -97.4005 12km NNE of Edmond, Oklahoma 5 3.5 ml 2015-06-22T21:06:30.100Z 35.7477 -97.3989 12km NE of Edmond, Oklahoma 5.854 3.6 mwr 2015-06-22T19:47:26.900Z 35.8169 -97.4468 7km SSW of Guthrie, Oklahoma 5.454 3.4 ml 2015-06-22T04:54:12.600Z 36.2134 -97.5616 25km WSW of Perry, Oklahoma 5.625 3.4 mwr 2015-06-22T04:05:43.100Z 35.7429 -97.394 12km NE of Edmond, Oklahoma 5.278 3 ml 2015-06-22T04:00:34.600Z 35.7437 -97.3836 13km NE of Edmond, Oklahoma 6.181 3.2 mwr 2015-06-21T18:58:12.000Z 36.2855 -97.52 20km W of Perry, Oklahoma 6.33 3.3 ml 2015-06-21T17:51:38.000Z 36.2917 -96.8601 7km SW of Pawnee, Oklahoma 5 3.4 ml 2015-06-21T12:25:00.000Z 36.5534 -97.1898 17km SE of Tonkawa, Oklahoma 6.12 3.1 ml 2015-06-21T00:58:56.000Z 35.7475 -97.4006 12km NNE of Edmond, Oklahoma 5.882 3.4 ml 2015-06-20T21:07:02.400Z 35.7428 -97.3843 13km NE of Edmond, Oklahoma 6.149 3.1 ml 2015-06-20T15:50:37.400Z 36.2938 -97.5363 22km W of Perry, Oklahoma 6.006 3 ml 2015-06-20T11:59:21.400Z 36.2884 -96.8624 7km SW of Pawnee, Oklahoma 5 3.3 ml 2015-06-20T11:21:16.000Z 35.739 -97.3839 12km NE of Edmond, Oklahoma 5.35 3.4 mwr 2015-06-20T10:56:03.200Z 35.7469 -97.3998 12km NE of Edmond, Oklahoma 5.589 3.3 mwr 2015-06-20T06:46:05.600Z 35.7417 -97.3866 12km NE of Edmond, Oklahoma 5 3 ml 2015-06-20T06:26:01.200Z 35.9022 -97.2608 4km S of Langston, Oklahoma 4.929 3.1 ml 2015-06-20T05:23:01.500Z 35.746 -97.3989 12km NE of Edmond, Oklahoma 5.376 3.4 ml 2015-06-20T05:10:54.900Z 35.7392 -97.3865 12km NE of Edmond, Oklahoma 3 4 mwr 2015-06-20T04:36:05.600Z 35.7446 -97.3924 12km NE of Edmond, Oklahoma 5.667 3.5 ml 2015-06-20T04:29:03.600Z 35.7447 -97.3919 12km NE of Edmond, Oklahoma 5.649 3.6 ml 2015-06-19T21:56:04.800Z 36.8521 -98.276 13km NNE of Cherokee, Oklahoma 5.774 3.2 ml 2015-06-19T16:23:48.000Z 36.1248 -97.2797 18km S of Perry, Oklahoma 3.542 3 ml 2015-06-19T13:16:07.700Z 36.2957 -97.5337 22km W of Perry, Oklahoma 6.339 3.1 ml 2015-06-19T03:07:26.400Z 36.2954 -97.5346 22km W of Perry, Oklahoma 5.16 3 ml 2015-06-18T23:10:17.000Z 35.7735 -97.4843 12km SSW of Guthrie, Oklahoma 6.87 3.5 ml 2015-06-18T23:02:58.000Z 35.7719 -97.4822 12km SSW of Guthrie, Oklahoma 7.019 3 ml 2015-06-18T22:29:14.000Z 36.3035 -96.6757 12km ESE of Pawnee, Oklahoma 5.015 3 ml 2015-06-17T19:21:12.200Z 36.2904 -97.5408 22km W of Perry, Oklahoma 6.433 3.1 ml 2015-06-17T19:17:08.700Z 36.285 -97.523 21km W of Perry, Oklahoma 6.008 4.3 mwr 2015-06-16T15:35:57.600Z 36.5158 -97.2814 18km S of Tonkawa, Oklahoma 4.871 3.1 ml 2015-06-16T03:59:15.520Z 36.511 -98.706 32km S of Alva, Oklahoma 5 3.1 ml 2015-06-16T02:20:36.900Z 36.3028 -96.6614 13km ESE of Pawnee, Oklahoma 4.651 3.2 ml 2015-06-15T19:49:06.560Z 37.0179 -97.9107 18km SE of Anthony, Kansas 5 3.4 mb_lg 2015-06-14T19:10:44.000Z 36.2924 -97.5306 21km W of Perry, Oklahoma 6.02 3.3 mwr 2015-06-14T18:17:09.000Z 36.286 -97.5217 20km W of Perry, Oklahoma 6.278 4 mwr 2015-06-14T05:57:24.800Z 36.2884 -97.5251 21km W of Perry, Oklahoma 6.462 3.2 ml Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 28 of 52
Preparer: D. Horne; Date: 02/15/21 Table 2 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Historical Earthquakes in Oklahoma Greater than 3.0 Magnitude (As of February 9, 2021)
Date and Time Latitude Longitude Epicenter Depth (km) Magnitude Mag. Type1 2015-06-13T20:54:42.600Z 36.2676 -97.3864 9km WSW of Perry, Oklahoma 7.12 3.3 mwr 2015-06-13T07:33:34.200Z 36.5033 -97.1454 21km SSW of McCord, Oklahoma 5.776 3 ml 2015-06-13T06:40:12.200Z 36.2972 -96.6676 13km ESE of Pawnee, Oklahoma 5 3.1 ml 2015-06-12T23:20:03.600Z 36.296 -96.6732 12km ESE of Pawnee, Oklahoma 0.978 3.4 ml 2015-06-12T22:42:23.900Z 36.3009 -96.674 12km ESE of Pawnee, Oklahoma 0.355 3.7 mwr 2015-06-12T22:35:38.800Z 35.5581 -97.1252 8km NNE of Harrah, Oklahoma 6.527 3.5 ml 2015-06-12T04:38:26.500Z 36.292 -97.534 22km W of Perry, Oklahoma 6.1 3.6 mwr 2015-06-11T23:31:37.900Z 36.2829 -97.5185 20km W of Perry, Oklahoma 5.651 3.7 mwr 2015-06-11T23:28:59.600Z 36.286 -97.5236 21km W of Perry, Oklahoma 5.555 3.5 mwr 2015-06-11T22:55:55.900Z 36.8722 -98.8326 16km WNW of Alva, Oklahoma 2.518 3 ml 2015-06-11T10:18:18.000Z 36.2932 -97.5259 21km W of Perry, Oklahoma 5.658 3.2 ml 2015-06-11T02:25:13.400Z 36.6241 -97.667 21km SSE of Medford, Oklahoma 5 3 ml 2015-06-10T13:05:08.940Z 36.288 -97.518 20km W of Perry, Oklahoma 8 3.4 mwr 2015-06-09T19:47:56.600Z 36.7434 -98.2235 11km E of Cherokee, Oklahoma 4.753 3.3 ml 2015-06-09T01:26:51.400Z 36.286 -97.5312 21km W of Perry, Oklahoma 6.171 3.7 mwr 2015-06-08T21:36:58.500Z 36.2852 -97.5219 21km W of Perry, Oklahoma 2.959 3.9 mwr 2015-06-08T13:20:16.000Z 36.3916 -98.6607 21km NW of Fairview, Oklahoma 4.027 3.9 ml 2015-06-08T04:28:16.240Z 37.232 -97.9583 8km SE of Harper, Kansas 5.66 3.4 mb_lg 2015-06-07T20:20:25.860Z 36.844 -97.7617 4km NNW of Medford, Oklahoma 5 3.3 mb_lg 2015-06-07T17:15:21.000Z 35.6767 -97.3974 7km ENE of Edmond, Oklahoma 5 3.5 ml 2015-06-07T12:56:06.900Z 36.944 -97.6353 10km SSW of Caldwell, Kansas 6.509 3.1 ml 2015-06-06T15:55:26.000Z 36.2515 -97.5339 22km W of Perry, Oklahoma 6.668 3 ml 2015-06-05T23:12:47.450Z 37.2648 -97.9213 9km ESE of Harper, Kansas 2.35 4.1 mwr 2015-06-05T23:12:41.270Z 37.2194 -97.9677 9km NE of Anthony, Kansas 5.11 3.6 mb 2015-06-05T22:53:05.140Z 37.2214 -97.9528 9km SE of Harper, Kansas 7.36 3.2 mb_lg 2015-06-05T18:31:35.200Z 36.1659 -96.9835 8km NE of Stillwater, Oklahoma 5.237 3.2 ml 2015-06-05T17:57:48.300Z 36.6636 -98.2951 11km SSE of Cherokee, Oklahoma 4.632 3.3 ml 2015-06-05T13:28:17.100Z 36.3187 -97.5191 20km W of Perry, Oklahoma 6.92 3 ml 2015-06-04T18:02:03.400Z 35.7864 -96.9885 13km NW of Chandler, Oklahoma 6.06 3.4 ml 2015-06-04T10:49:03.000Z 36.5145 -97.2556 18km SSE of Tonkawa, Oklahoma 6.23 3.2 ml 2015-06-04T00:17:52.200Z 36.8023 -98.5401 11km E of Alva, Oklahoma 5 3.2 ml 2015-06-03T05:55:39.900Z 35.7885 -96.9896 13km NW of Chandler, Oklahoma 6.854 3 ml 2015-06-03T05:28:28.000Z 35.7866 -96.9874 13km NW of Chandler, Oklahoma 6.113 3.6 ml 2015-06-02T21:34:56.200Z 35.7877 -96.9885 13km NW of Chandler, Oklahoma 5.758 3.7 ml 2015-06-02T07:55:51.200Z 36.952 -97.618 8km S of Caldwell, Kansas 7.6 3.6 mwr 2015-06-02T06:45:22.400Z 36.9443 -97.6187 9km S of Caldwell, Kansas 5 3 ml 2015-06-02T04:58:19.700Z 36.2674 -98.5366 5km W of Fairview, Oklahoma 8.433 3 ml 2015-06-02T04:18:58.100Z 36.2626 -97.3869 9km WSW of Perry, Oklahoma 7.077 3 ml 2015-06-02T00:58:09.260Z 37.0317 -97.9035 17km SE of Anthony, Kansas 5.35 3 mb_lg 2015-06-01T21:31:56.500Z 35.7859 -96.9874 13km NW of Chandler, Oklahoma 6.55 3.3 ml 2015-06-01T19:19:43.800Z 35.788 -96.9872 13km NW of Chandler, Oklahoma 6.269 3.5 ml 2015-06-01T17:35:34.000Z 35.7887 -96.9871 13km NW of Chandler, Oklahoma 6.167 3.5 mwr 2015-06-01T15:19:56.100Z 35.9226 -97.3367 7km WSW of Langston, Oklahoma 5.973 3.1 ml 2015-05-31T20:18:22.000Z 36.7083 -98.6523 10km S of Alva, Oklahoma 4.869 3.1 ml 2015-05-30T21:10:24.080Z 37.0506 -97.9219 14km SE of Anthony, Kansas 5.19 3.2 mb_lg 2015-05-30T11:21:40.050Z 37.0411 -97.9047 16km SE of Anthony, Kansas 5 3.6 mwr 2015-05-28T12:00:27.000Z 36.1356 -97.2794 17km S of Perry, Oklahoma 5.664 3.5 mwr 2015-05-28T00:38:21.200Z 35.7458 -97.3888 13km NE of Edmond, Oklahoma 5.778 3 ml 2015-05-27T19:13:23.000Z 36.3055 -96.6613 13km ESE of Pawnee, Oklahoma 5.58 3.1 ml 2015-05-26T23:30:39.100Z 35.9247 -97.3447 8km NE of Guthrie, Oklahoma 5.752 3.1 ml 2015-05-26T22:27:45.600Z 36.5212 -99.0078 19km ENE of Mooreland, Oklahoma 7.24 3 ml 2015-05-26T17:30:44.700Z 36.2471 -97.5317 22km WSW of Perry, Oklahoma 6.973 3 ml 2015-05-26T16:00:07.900Z 36.2981 -97.5599 24km W of Perry, Oklahoma 6.915 3 ml 2015-05-26T14:36:26.700Z 36.2963 -97.5555 24km W of Perry, Oklahoma 7.26 3 ml 2015-05-26T13:50:15.300Z 36.2974 -97.5585 24km W of Perry, Oklahoma 7.221 3 ml 2015-05-25T12:38:00.800Z 35.597 -97.065 13km ESE of Luther, Oklahoma 5.9 3.2 ml 2015-05-24T21:49:47.910Z 37.142 -97.6502 12km NNW of Caldwell, Kansas 6.41 3.4 mb_lg 2015-05-23T18:44:28.360Z 37.4294 -98.9535 30km SW of Pratt, Kansas 5 4 mwr 2015-05-23T15:11:40.300Z 37.4447 -98.9522 29km SW of Pratt, Kansas 5 3.3 mb_lg 2015-05-23T10:46:42.300Z 36.8495 -97.6975 5km NE of Medford, Oklahoma 7.128 3.2 mwr 2015-05-22T10:57:29.700Z 36.6184 -98.4082 14km WNW of Helena, Oklahoma 2.412 3.5 mwr 2015-05-22T07:17:15.100Z 36.5145 -99.0189 18km ENE of Mooreland, Oklahoma 5.876 3 ml 2015-05-21T11:03:15.700Z 35.9936 -97.2263 5km NNE of Langston, Oklahoma 4.498 3.3 ml Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 29 of 52
Preparer: D. Horne; Date: 02/15/21 Table 2 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Historical Earthquakes in Oklahoma Greater than 3.0 Magnitude (As of February 9, 2021)
Date and Time Latitude Longitude Epicenter Depth (km) Magnitude Mag. Type1 2015-05-21T02:29:13.300Z 36.1086 -97.3114 18km NNW of Langston, Oklahoma 5.283 3 ml 2015-05-20T10:44:40.600Z 36.5144 -99.0086 19km ENE of Mooreland, Oklahoma 6.243 3.3 ml 2015-05-19T14:54:41.800Z 36.599 -98.6603 22km S of Alva, Oklahoma 5 3 ml 2015-05-18T21:45:13.100Z 36.9407 -97.6341 10km SSW of Caldwell, Kansas 4.659 3 ml 2015-05-18T16:46:50.000Z 35.8265 -97.2238 13km SSE of Langston, Oklahoma 6.318 3 ml 2015-05-18T07:14:32.400Z 36.607 -98.6922 22km S of Alva, Oklahoma 13.73 3.4 ml 2015-05-18T02:52:50.200Z 35.8082 -97.4452 8km SSW of Guthrie, Oklahoma 5.398 3.5 mwr 2015-05-18T02:01:29.500Z 35.8142 -97.4517 7km SSW of Guthrie, Oklahoma 5.227 3 ml 2015-05-17T20:38:24.500Z 36.9597 -97.5921 8km S of Caldwell, Kansas 4.78 3.1 ml 2015-05-17T18:36:22.200Z 35.826 -97.2249 13km SSE of Langston, Oklahoma 6.466 3.4 ml 2015-05-17T15:20:23.200Z 36.554 -97.182 17km SE of Tonkawa, Oklahoma 8 3.2 ml 2015-05-16T14:25:17.830Z 35.6035 -97.071 13km ESE of Luther, Oklahoma 5 3 mb_lg 2015-05-16T12:03:20.200Z 35.6076 -97.0601 13km ESE of Luther, Oklahoma 3.7 3.3 ml 2015-05-15T05:29:54.800Z 36.3348 -96.8174 1km WSW of Pawnee, Oklahoma 5 3.1 ml 2015-05-14T18:39:16.300Z 35.6682 -97.3154 10km W of Luther, Oklahoma 3.727 3.2 ml 2015-05-14T10:04:32.710Z 37.0308 -97.9074 17km SE of Anthony, Kansas 5 3.3 mb_lg 2015-05-14T04:08:45.900Z 36.9396 -97.8487 17km NW of Medford, Oklahoma 5 3.1 ml 2015-05-12T21:31:02.600Z 36.3508 -97.0811 19km ENE of Perry, Oklahoma 3.888 3.2 ml 2015-05-12T15:59:06.600Z 36.5175 -98.9653 23km ENE of Mooreland, Oklahoma 3.522 3.1 ml 2015-05-10T21:15:23.130Z 36.764 -98.688 4km SSW of Alva, Oklahoma 8.2 3.3 ml 2015-05-10T04:11:25.300Z 36.6239 -97.6898 20km S of Medford, Oklahoma 6.368 3.3 ml 2015-05-10T02:57:13.600Z 36.0765 -97.4515 18km NE of Crescent, Oklahoma 4.137 3 ml 2015-05-10T01:33:25.900Z 36.8195 -97.7165 2km NE of Medford, Oklahoma 6.627 3.1 ml 2015-05-09T18:41:40.600Z 36.9602 -97.5881 8km SSE of Caldwell, Kansas 5.037 3 ml 2015-05-09T03:49:47.100Z 36.935 -97.6407 11km SSW of Caldwell, Kansas 1.888 3.1 ml 2015-05-09T03:01:22.100Z 36.9432 -97.6373 10km SSW of Caldwell, Kansas 5.644 3 ml 2015-05-08T23:19:04.800Z 36.0256 -97.1076 8km NW of Perkins, Oklahoma 5.081 3.2 ml 2015-05-08T23:05:01.000Z 36.5151 -99.015 18km ENE of Mooreland, Oklahoma 7.567 3.1 ml 2015-05-08T16:43:53.300Z 35.8186 -97.2418 14km S of Langston, Oklahoma 2.432 3.2 ml 2015-05-08T14:10:03.100Z 36.6033 -97.8236 23km NNE of Enid, Oklahoma 5.762 3.5 ml 2015-05-08T01:06:03.900Z 36.5129 -99.0494 16km ENE of Mooreland, Oklahoma 14.442 3.2 ml 2015-05-07T21:31:06.200Z 36.5085 -99.0681 14km ENE of Mooreland, Oklahoma 7.986 3.3 ml 2015-05-07T20:01:24.290Z 37.203 -98.0355 5km N of Anthony, Kansas 8.53 3 mb_lg 2015-05-07T12:48:38.000Z 36.2982 -96.8807 8km WSW of Pawnee, Oklahoma 5 3.1 ml 2015-05-07T02:48:50.000Z 35.6071 -97.0542 14km ESE of Luther, Oklahoma 4.28 3 ml 2015-05-07T00:58:41.100Z 36.1202 -97.5764 18km N of Crescent, Oklahoma 3.332 3 ml 2015-05-06T17:11:39.400Z 36.3196 -96.7527 5km ESE of Pawnee, Oklahoma 1.137 3.1 ml 2015-05-06T14:10:07.200Z 36.8752 -98.1615 21km NE of Cherokee, Oklahoma 3.276 3.5 ml 2015-05-06T11:33:21.300Z 35.926 -97.345 8km NE of Guthrie, Oklahoma 4.9 3.1 ml 2015-05-06T11:06:08.300Z 35.9228 -97.342 8km ENE of Guthrie, Oklahoma 3.747 3.4 ml 2015-05-06T10:05:07.380Z 37.2721 -98.0421 2km SW of Harper, Kansas 7.29 3.2 mb_lg 2015-05-06T09:29:12.800Z 36.8714 -98.1544 22km NE of Cherokee, Oklahoma 6.744 3.1 ml 2015-05-06T09:12:17.570Z 37.224 -98.1041 9km SW of Harper, Kansas 3.37 3 mb_lg 2015-05-04T23:59:52.200Z 35.6001 -97.0543 14km ESE of Luther, Oklahoma 4.775 3.2 ml 2015-05-04T20:13:31.600Z 36.1157 -97.2316 15km W of Stillwater, Oklahoma 5.06 3 ml 2015-05-04T11:04:40.400Z 36.3285 -96.946 12km W of Pawnee, Oklahoma 2.523 3 ml 2015-05-04T08:15:01.300Z 36.945 -97.639 10km SSW of Caldwell, Kansas 5.377 3 ml 2015-05-04T02:10:19.000Z 36.513 -98.9824 21km ENE of Mooreland, Oklahoma 5.398 3 ml 2015-05-04T01:30:06.500Z 36.7264 -97.9166 18km WSW of Medford, Oklahoma 4.12 3.5 ml 2015-05-02T17:05:21.100Z 36.1381 -96.8551 14km W of Yale, Oklahoma 5.007 3 ml 2015-05-01T07:32:54.900Z 36.5224 -98.991 21km ENE of Mooreland, Oklahoma 4.2 3.8 mwr 2015-05-01T07:26:29.400Z 35.8126 -97.2417 14km S of Langston, Oklahoma 4.186 3.1 ml 2015-04-29T20:30:58.000Z 36.2845 -97.5163 20km W of Perry, Oklahoma 8.843 3 ml 2015-04-29T16:42:26.600Z 36.2841 -97.5182 20km W of Perry, Oklahoma 5.661 3.8 mwr 2015-04-29T15:06:15.100Z 36.1825 -97.3258 12km SSW of Perry, Oklahoma 4.439 3.1 ml 2015-04-29T05:25:53.200Z 35.7442 -97.3829 13km NE of Edmond, Oklahoma 5.696 3.2 ml 2015-04-28T22:18:54.480Z 37.0208 -97.896 18km SE of Anthony, Kansas 7.74 3.6 mwr 2015-04-28T20:59:47.300Z 36.2827 -97.5113 20km W of Perry, Oklahoma 5.673 3.3 ml 2015-04-28T00:20:25.500Z 36.558 -98.1517 10km E of Helena, Oklahoma 6.617 3 ml 2015-04-27T22:22:17.900Z 35.918 -97.3256 7km WSW of Langston, Oklahoma 5.279 4.1 mwr 2015-04-27T06:23:12.800Z 36.2804 -97.5114 20km W of Perry, Oklahoma 6.789 3.1 ml 2015-04-26T19:07:25.800Z 36.2833 -97.5131 20km W of Perry, Oklahoma 4.953 3.3 mwr 2015-04-26T13:53:39.210Z 35.967 -97.38 10km NNE of Guthrie, Oklahoma 6.1 3.1 ml Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 30 of 52
Preparer: D. Horne; Date: 02/15/21 Table 2 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Historical Earthquakes in Oklahoma Greater than 3.0 Magnitude (As of February 9, 2021)
Date and Time Latitude Longitude Epicenter Depth (km) Magnitude Mag. Type1 2015-04-26T02:43:16.300Z 36.2732 -96.9406 14km WSW of Pawnee, Oklahoma 4.877 3 ml 2015-04-26T02:29:21.600Z 35.971 -97.382 10km NNE of Guthrie, Oklahoma 4.7 3 ml 2015-04-26T01:43:58.800Z 36.2821 -96.91 11km WSW of Pawnee, Oklahoma 5.015 3 ml 2015-04-25T23:13:04.300Z 36.4033 -97.3326 13km NNW of Perry, Oklahoma 7.512 3.4 ml 2015-04-24T22:23:42.700Z 35.7474 -97.3799 13km NE of Edmond, Oklahoma 5.461 3.2 ml 2015-04-24T12:32:57.900Z 35.585 -97.3725 6km N of Spencer, Oklahoma 6.588 3.6 ml 2015-04-24T12:01:09.700Z 36.116 -97.58 18km N of Crescent, Oklahoma 3.134 3 ml 2015-04-24T06:16:46.600Z 36.274 -97.463 15km W of Perry, Oklahoma 5.3 3 ml 2015-04-24T06:15:50.200Z 36.7392 -97.5768 15km ESE of Medford, Oklahoma 3.53 3.2 mb_lg 2015-04-23T06:20:40.500Z 36.624 -97.6568 21km SSE of Medford, Oklahoma 5.85 3.7 mwr 2015-04-23T05:21:31.600Z 36.629 -97.654 20km SSE of Medford, Oklahoma 6.5 3.4 ml 2015-04-23T05:20:01.400Z 36.6236 -97.6575 21km SSE of Medford, Oklahoma 7.098 3 ml 2015-04-22T20:57:04.900Z 36.9428 -97.6334 10km SSW of Caldwell, Kansas 6.4 3.4 ml 2015-04-20T12:08:31.400Z 36.849 -97.88 13km WNW of Medford, Oklahoma 5.3 3.4 mwr 2015-04-19T06:28:14.400Z 35.9188 -97.3241 6km WSW of Langston, Oklahoma 5.631 3.5 mwr 2015-04-19T05:27:14.800Z 35.953 -97.3318 6km W of Langston, Oklahoma 3.16 4.2 mwr 2015-04-18T18:34:04.800Z 36.9446 -97.6311 9km SSW of Caldwell, Kansas 5 3.4 mwr 2015-04-17T16:48:16.300Z 35.9196 -97.3268 7km WSW of Langston, Oklahoma 5.433 3.4 ml 2015-04-17T10:42:24.000Z 35.9148 -97.4096 4km NNE of Guthrie, Oklahoma 5.977 3.1 ml 2015-04-17T09:37:02.600Z 35.919 -97.3258 6km WSW of Langston, Oklahoma 5.134 3.3 ml 2015-04-17T09:08:05.800Z 35.9226 -97.3308 7km WSW of Langston, Oklahoma 3.089 3.8 mwr 2015-04-17T08:37:11.200Z 35.9211 -97.33 7km WSW of Langston, Oklahoma 4.359 3.6 mwr 2015-04-16T15:49:45.820Z 36.5274 -98.9408 25km ENE of Mooreland, Oklahoma 8.8 3.5 ml 2015-04-15T19:12:36.800Z 36.3294 -97.5229 21km WNW of Perry, Oklahoma 6.978 3.3 ml 2015-04-15T03:25:09.600Z 36.3138 -97.5153 20km W of Perry, Oklahoma 6.438 3 ml 2015-04-13T14:10:06.100Z 36.5068 -99.0534 15km ENE of Mooreland, Oklahoma 9.177 3.5 ml 2015-04-13T12:38:59.700Z 36.077 -97.5578 14km NNE of Crescent, Oklahoma 5.06 3.3 ml 2015-04-12T22:55:56.100Z 35.949 -96.775 4km S of Cushing, Oklahoma 4.45 3.5 ml 2015-04-12T12:10:35.500Z 36.7214 -97.9331 20km WSW of Medford, Oklahoma 6.885 3.2 ml 2015-04-12T08:18:36.300Z 35.8083 -97.4164 7km S of Guthrie, Oklahoma 5.262 3 ml 2015-04-12T00:42:03.300Z 36.1195 -97.5644 18km N of Crescent, Oklahoma 5.518 3.4 ml 2015-04-11T18:58:39.600Z 36.511 -99.0309 17km ENE of Mooreland, Oklahoma 7.231 3.1 ml 2015-04-10T10:07:32.600Z 35.811 -97.234 14km S of Langston, Oklahoma 5.75 3.2 ml 2015-04-09T18:40:31.700Z 36.1254 -97.5508 19km NNE of Crescent, Oklahoma 5 3 ml 2015-04-09T09:29:39.900Z 35.6249 -97.2047 4km SSW of Luther, Oklahoma 5.393 3.2 ml 2015-04-09T03:38:08.500Z 36.7222 -97.8312 12km SW of Medford, Oklahoma 5.95 3 ml 2015-04-08T20:52:00.500Z 35.8192 -97.4191 6km S of Guthrie, Oklahoma 2.487 4 mwr 2015-04-08T20:47:35.100Z 35.8219 -97.424 6km S of Guthrie, Oklahoma 4.722 3.1 ml 2015-04-08T03:15:48.100Z 36.266 -97.2674 3km SE of Perry, Oklahoma 4.852 3 ml 2015-04-08T01:47:51.800Z 36.1867 -97.0295 8km NNE of Stillwater, Oklahoma 4.65 3.2 ml 2015-04-08T01:42:11.900Z 36.2826 -97.5171 20km W of Perry, Oklahoma 2.723 3 ml 2015-04-07T22:10:14.200Z 36.5024 -97.1509 22km SSW of McCord, Oklahoma 6.822 3 ml 2015-04-07T21:21:24.200Z 36.8895 -98.1974 20km NE of Cherokee, Oklahoma 4.651 3.3 ml 2015-04-07T17:25:12.000Z 36.3306 -97.525 21km WNW of Perry, Oklahoma 6.866 3.5 mwr 2015-04-07T03:52:17.100Z 36.3699 -97.8308 5km SE of Enid, Oklahoma 5.734 3.1 ml 2015-04-06T15:37:00.900Z 36.6331 -97.6504 20km SSE of Medford, Oklahoma 6.364 3.1 ml 2015-04-06T15:30:23.600Z 36.6338 -97.6574 20km SSE of Medford, Oklahoma 5.226 3.9 mwr 2015-04-06T09:01:41.900Z 36.5112 -99.0454 16km ENE of Mooreland, Oklahoma 8.848 3.2 ml 2015-04-06T01:33:45.550Z 37.0546 -98.0244 10km S of Anthony, Kansas 7.41 3 mb_lg 2015-04-05T10:22:21.800Z 36.4674 -97.322 19km N of Perry, Oklahoma 7.305 3.2 ml 2015-04-05T04:49:13.500Z 36.5043 -97.1452 21km SSW of McCord, Oklahoma 6.907 3.1 ml 2015-04-04T16:15:59.400Z 35.9529 -96.7804 3km SSW of Cushing, Oklahoma 4.48 3 ml 2015-04-04T13:21:17.000Z 36.1176 -97.5717 18km N of Crescent, Oklahoma 5.047 4.1 mwr 2015-04-04T09:11:54.200Z 36.3284 -97.5268 21km WNW of Perry, Oklahoma 6.828 3 ml 2015-04-04T08:35:30.000Z 36.3308 -97.5282 22km WNW of Perry, Oklahoma 6.088 3.4 mwr 2015-04-04T05:02:35.700Z 36.1166 -97.5719 18km N of Crescent, Oklahoma 5 3.3 mwr 2015-04-04T04:10:30.100Z 36.5113 -99.0518 15km ENE of Mooreland, Oklahoma 9.772 3.2 ml 2015-04-04T00:49:59.200Z 36.1163 -97.5638 18km N of Crescent, Oklahoma 5.268 3.7 mwr 2015-04-04T00:48:01.800Z 36.9384 -97.634 10km SSW of Caldwell, Kansas 4.713 3 ml 2015-04-04T00:20:01.600Z 36.9402 -97.6337 10km SSW of Caldwell, Kansas 5.394 3.4 ml 2015-04-03T21:28:36.800Z 36.6888 -97.6795 13km SSE of Medford, Oklahoma 5.977 3.4 ml 2015-04-03T20:54:00.800Z 36.4872 -98.1516 12km ESE of Helena, Oklahoma 6.912 3.3 ml 2015-04-03T02:16:49.600Z 36.4876 -98.1637 11km SE of Helena, Oklahoma 5.599 3.2 mwr Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 31 of 52
Preparer: D. Horne; Date: 02/15/21 Table 2 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Historical Earthquakes in Oklahoma Greater than 3.0 Magnitude (As of February 9, 2021)
Date and Time Latitude Longitude Epicenter Depth (km) Magnitude Mag. Type1 2015-04-02T03:58:11.000Z 36.1186 -97.5638 18km N of Crescent, Oklahoma 5.428 3.4 ml 2015-04-02T03:05:17.700Z 36.1193 -97.5614 18km N of Crescent, Oklahoma 4.842 3.3 ml 2015-04-02T02:10:47.900Z 36.7753 -98.0307 26km W of Medford, Oklahoma 5.301 3.5 ml 2015-04-02T00:46:14.200Z 36.5989 -97.605 25km SSE of Medford, Oklahoma 5.824 3.1 ml 2015-04-01T23:03:14.600Z 36.5967 -97.6077 25km SSE of Medford, Oklahoma 6.13 3.1 ml 2015-04-01T19:19:31.700Z 36.122 -97.5648 18km N of Crescent, Oklahoma 5.459 3.2 ml 2015-03-31T16:23:07.000Z 36.921 -97.7934 13km NNW of Medford, Oklahoma 2.634 3 ml 2015-03-31T15:21:07.600Z 36.6028 -97.6158 24km SSE of Medford, Oklahoma 2.713 3.4 ml 2015-03-31T14:46:54.900Z 36.3262 -97.5257 21km W of Perry, Oklahoma 2.554 3 ml 2015-03-31T03:42:40.400Z 36.784 -98.0176 25km W of Medford, Oklahoma 6.37 3 ml 2015-03-30T14:17:34.200Z 36.3569 -97.0974 18km ENE of Perry, Oklahoma 5 3 ml 2015-03-30T06:06:15.200Z 36.112 -97.232 15km W of Stillwater, Oklahoma 5.147 3 ml 2015-03-30T05:57:32.000Z 36.1145 -97.2318 15km W of Stillwater, Oklahoma 5.499 3.1 ml 2015-03-29T05:06:01.100Z 35.8139 -97.4515 7km SSW of Guthrie, Oklahoma 6.7 3 ml 2015-03-28T11:23:09.000Z 36.506 -99.025 17km ENE of Mooreland, Oklahoma 7.081 3.1 ml 2015-03-28T11:08:53.700Z 36.5153 -99.0166 18km ENE of Mooreland, Oklahoma 8.74 3.4 ml 2015-03-28T10:12:06.400Z 36.8513 -97.6991 5km NNE of Medford, Oklahoma 6.477 3.1 ml 2015-03-27T20:20:33.680Z 37.0406 -97.9129 16km SE of Anthony, Kansas 7.48 3.1 mb_lg 2015-03-27T16:39:03.700Z 36.1138 -97.2342 15km W of Stillwater, Oklahoma 4.778 3.3 ml 2015-03-27T10:32:16.100Z 36.194 -97.0065 9km NNE of Stillwater, Oklahoma 5.212 3 ml 2015-03-26T22:16:18.100Z 36.776 -98.0271 26km W of Medford, Oklahoma 6.514 3.2 ml 2015-03-25T17:33:58.700Z 35.65 -97.3673 10km E of Edmond, Oklahoma 5.181 3.2 ml 2015-03-25T08:54:47.800Z 36.1171 -97.3021 19km S of Perry, Oklahoma 5 3.1 ml 2015-03-25T03:15:16.800Z 36.2715 -97.3781 8km WSW of Perry, Oklahoma 5.567 3.5 ml 2015-03-25T00:15:26.900Z 36.5999 -97.6278 24km SSE of Medford, Oklahoma 5.234 3.4 mwr 2015-03-25T00:10:57.300Z 36.7746 -98.0299 26km W of Medford, Oklahoma 6.728 3.2 ml 2015-03-24T23:53:17.700Z 36.4455 -97.7278 14km ENE of Enid, Oklahoma 4.545 3.2 ml 2015-03-24T23:45:59.400Z 36.4449 -97.7286 14km ENE of Enid, Oklahoma 4.766 3 ml 2015-03-24T20:25:04.900Z 36.3309 -97.5195 21km WNW of Perry, Oklahoma 6.795 3.5 mb_lg 2015-03-24T19:48:28.900Z 36.7776 -98.0301 26km W of Medford, Oklahoma 6.513 4 ml 2015-03-24T15:35:55.620Z 37.0868 -97.6332 6km NNW of Caldwell, Kansas 5 3.2 mb_lg 2015-03-24T15:31:51.490Z 37.105 -97.6504 8km NNW of Caldwell, Kansas 5.89 3.7 mwr 2015-03-24T14:31:36.300Z 36.5423 -98.3807 9km W of Helena, Oklahoma 5 3.1 ml 2015-03-24T13:54:43.700Z 36.0784 -97.2242 15km WSW of Stillwater, Oklahoma 5.269 3.2 ml 2015-03-24T10:07:14.700Z 36.5177 -99.0043 19km ENE of Mooreland, Oklahoma 7.408 3.3 ml 2015-03-24T09:45:37.000Z 36.5166 -98.9862 21km ENE of Mooreland, Oklahoma 5 3 ml 2015-03-24T09:39:13.700Z 36.5175 -98.9563 23km ENE of Mooreland, Oklahoma 0.416 3.5 ml 2015-03-24T00:27:27.900Z 36.3561 -97.1119 17km ENE of Perry, Oklahoma 0.835 3.7 mwr 2015-03-23T23:29:54.500Z 36.6336 -97.6539 20km SSE of Medford, Oklahoma 2.588 3.9 mwr 2015-03-23T21:41:29.000Z 36.7829 -98.0248 26km W of Medford, Oklahoma 7.012 3 ml 2015-03-23T20:16:15.300Z 36.1222 -97.5663 18km N of Crescent, Oklahoma 4.214 3.6 mwr 2015-03-23T17:17:30.600Z 35.7913 -96.9873 13km NW of Chandler, Oklahoma 5.275 3.6 mwr 2015-03-23T16:23:42.500Z 36.782 -98.0207 25km W of Medford, Oklahoma 5.76 3.3 ml 2015-03-23T16:18:19.400Z 36.7831 -98.0238 26km W of Medford, Oklahoma 6.811 3.3 ml 2015-03-23T07:24:26.700Z 36.782 -98.0303 26km W of Medford, Oklahoma 6.601 3.6 ml 2015-03-22T22:45:22.900Z 36.3321 -97.5171 21km WNW of Perry, Oklahoma 6.626 3.4 ml 2015-03-22T11:12:09.900Z 36.3321 -97.1971 9km ENE of Perry, Oklahoma 5 3.3 ml 2015-03-21T19:58:36.000Z 36.2596 -97.2549 4km SE of Perry, Oklahoma 4.677 3.4 mwr 2015-03-21T19:57:37.000Z 36.2578 -97.2504 4km SE of Perry, Oklahoma 4.976 3 ml 2015-03-21T10:58:45.600Z 36.6065 -98.3812 11km NW of Helena, Oklahoma 5.97 3.2 ml 2015-03-21T10:08:51.600Z 36.3506 -97.0884 19km ENE of Perry, Oklahoma 5 3.6 mwr 2015-03-20T09:00:40.300Z 36.58 -97.597 27km WSW of Tonkawa, Oklahoma 5.656 3.2 ml 2015-03-19T14:48:32.100Z 36.6029 -97.6077 25km SSE of Medford, Oklahoma 6.114 3.1 ml 2015-03-18T18:13:34.500Z 36.7794 -98.0299 26km W of Medford, Oklahoma 6.489 3 ml 2015-03-17T23:45:32.500Z 36.5995 -97.6222 25km SSE of Medford, Oklahoma 2.381 3.9 mwr 2015-03-17T05:50:10.300Z 37.0062 -97.8195 19km W of Caldwell, Kansas 5 3.2 mb_lg 2015-03-17T00:03:59.400Z 36.36 -97.1017 18km ENE of Perry, Oklahoma 4.799 3.1 ml 2015-03-16T22:46:09.300Z 35.8094 -97.2352 15km S of Langston, Oklahoma 7.112 3.4 ml 2015-03-16T15:28:46.900Z 35.812 -97.2366 14km S of Langston, Oklahoma 5.73 3 ml 2015-03-16T14:15:51.500Z 35.8121 -97.2395 14km S of Langston, Oklahoma 4.3 3 ml 2015-03-16T13:19:00.700Z 35.8053 -97.233 15km S of Langston, Oklahoma 6.955 3.2 ml 2015-03-16T05:48:27.110Z 37.2107 -97.8802 14km ENE of Anthony, Kansas 8.63 3.5 mb_lg 2015-03-15T05:10:04.200Z 36.2641 -97.2792 2km SSE of Perry, Oklahoma 5.422 3.1 ml Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 32 of 52
Preparer: D. Horne; Date: 02/15/21 Table 2 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Historical Earthquakes in Oklahoma Greater than 3.0 Magnitude (As of February 9, 2021)
Date and Time Latitude Longitude Epicenter Depth (km) Magnitude Mag. Type1 2015-03-14T13:57:47.000Z 36.7445 -97.6287 11km SE of Medford, Oklahoma 5 3.1 ml 2015-03-13T10:04:26.500Z 36.9396 -97.635 10km SSW of Caldwell, Kansas 2.3 3.3 ml 2015-03-13T07:38:53.700Z 35.7455 -97.3819 13km NE of Edmond, Oklahoma 6.194 3.1 ml 2015-03-13T06:49:04.200Z 35.744 -97.3777 13km NE of Edmond, Oklahoma 5 3 ml 2015-03-12T20:34:02.100Z 36.6284 -97.6667 20km SSE of Medford, Oklahoma 5.274 3.9 mwr 2015-03-12T10:40:26.100Z 36.8699 -98.1167 24km ENE of Cherokee, Oklahoma 5 3.1 ml 2015-03-11T14:44:42.800Z 36.1157 -97.3075 19km S of Perry, Oklahoma 4.852 3.3 ml 2015-03-10T20:28:41.300Z 36.2651 -97.2761 2km SSE of Perry, Oklahoma 5.405 3 ml 2015-03-10T04:21:04.500Z 36.7514 -97.5342 18km ESE of Medford, Oklahoma 6.58 3.3 mwr 2015-03-09T22:28:21.000Z 35.541 -97.2425 4km SE of Jones, Oklahoma 6.048 3 ml 2015-03-09T10:48:57.000Z 35.8206 -97.4384 6km S of Guthrie, Oklahoma 4.897 3.1 mwr 2015-03-09T04:01:23.000Z 35.8144 -97.4511 7km SSW of Guthrie, Oklahoma 5 3.2 ml 2015-03-09T03:24:40.400Z 35.815 -97.4481 7km SSW of Guthrie, Oklahoma 4.525 3.7 mwr 2015-03-08T22:14:48.500Z 36.2692 -97.2888 2km S of Perry, Oklahoma 5.586 3.3 ml 2015-03-08T17:02:01.300Z 36.6146 -97.6436 22km SSE of Medford, Oklahoma 5.559 3 ml 2015-03-08T16:48:08.400Z 35.6348 -97.274 7km N of Jones, Oklahoma 5.823 3.3 mwr 2015-03-08T13:51:33.800Z 36.6304 -97.6542 20km SSE of Medford, Oklahoma 5.401 3 ml 2015-03-07T22:46:50.500Z 36.6269 -97.6678 20km SSE of Medford, Oklahoma 5.417 3.1 mwr 2015-03-07T21:11:47.200Z 36.5974 -97.6328 24km SSE of Medford, Oklahoma 5.878 3.7 mwr 2015-03-07T20:44:05.300Z 36.5987 -97.6196 25km SSE of Medford, Oklahoma 5.692 3 ml 2015-03-06T08:59:15.800Z 36.6241 -97.673 21km SSE of Medford, Oklahoma 6.374 3.1 ml 2015-03-05T21:01:04.700Z 36.195 -97.2892 10km S of Perry, Oklahoma 5.04 3 ml 2015-03-05T20:59:41.350Z 36.7917 -98.2629 9km ENE of Cherokee, Oklahoma 9.39 3.3 mb_lg 2015-03-05T20:33:09.000Z 36.8123 -98.2732 9km NE of Cherokee, Oklahoma 5.449 3.2 ml 2015-03-05T09:51:06.200Z 36.8115 -98.2774 9km NE of Cherokee, Oklahoma 5.182 3.1 ml 2015-03-03T20:05:24.700Z 36.1634 -96.9948 7km NE of Stillwater, Oklahoma 4.464 3 ml 2015-03-03T15:56:01.250Z 37.1983 -97.9048 12km ENE of Anthony, Kansas 9.91 3.8 mb_lg 2015-03-03T12:06:13.100Z 36.0569 -97.5158 13km NNE of Crescent, Oklahoma 5 3.4 ml 2015-03-02T20:06:30.900Z 36.2209 -97.6541 22km ESE of Waukomis, Oklahoma 3.917 3.2 ml 2015-03-02T19:07:53.100Z 36.2235 -97.6451 23km ESE of Waukomis, Oklahoma 3.222 3 ml 2015-03-01T08:58:54.400Z 35.9501 -96.7749 3km S of Cushing, Oklahoma 4.673 3 ml 2015-03-01T02:47:20.810Z 37.091 -97.847 17km ESE of Anthony, Kansas 7.27 3.5 mb_lg 2015-03-01T00:05:12.200Z 35.9531 -96.7739 3km S of Cushing, Oklahoma 3.88 3.2 ml 2015-02-28T20:01:04.000Z 36.1272 -97.2771 18km S of Perry, Oklahoma 4.646 3.1 ml 2015-02-27T20:23:10.300Z 36.2661 -97.3809 8km WSW of Perry, Oklahoma 6.809 3.3 ml 2015-02-26T07:32:52.300Z 36.3933 -97.287 11km N of Perry, Oklahoma 6.755 3 ml 2015-02-25T17:58:06.600Z 36.2462 -97.6035 26km E of Waukomis, Oklahoma 3.963 3.1 mb_lg 2015-02-25T17:30:38.200Z 36.9467 -97.6276 9km S of Caldwell, Kansas 7.001 3 ml 2015-02-25T02:08:22.400Z 36.8681 -98.2988 13km NNE of Cherokee, Oklahoma 5 3.3 ml 2015-02-24T18:30:10.200Z 36.6005 -97.622 24km SSE of Medford, Oklahoma 7.067 3.4 ml 2015-02-23T17:05:22.800Z 36.9431 -97.6272 10km S of Caldwell, Kansas 5 3 ml 2015-02-21T12:42:40.200Z 35.4813 -96.9471 4km WSW of Meeker, Oklahoma 6.161 3 ml 2015-02-21T06:45:43.700Z 36.6002 -97.6284 24km SSE of Medford, Oklahoma 3.267 3 ml 2015-02-21T04:47:08.300Z 36.3981 -97.2972 12km N of Perry, Oklahoma 6.096 3.1 ml 2015-02-20T09:57:59.200Z 36.5337 -98.2088 5km ESE of Helena, Oklahoma 5 3.1 ml 2015-02-20T03:24:13.600Z 35.8179 -97.4206 6km S of Guthrie, Oklahoma 6.23 3.2 ml 2015-02-19T04:06:15.040Z 35.8874 -97.2677 6km S of Langston, Oklahoma 2.23 3.1 ml 2015-02-18T21:44:46.000Z 36.537 -97.0485 15km S of McCord, Oklahoma 5.48 3 mb_lg 2015-02-18T21:36:47.400Z 36.5993 -97.6289 24km SSE of Medford, Oklahoma 5 3.1 ml 2015-02-18T19:29:13.700Z 36.5578 -98.1574 10km E of Helena, Oklahoma 5.872 3.2 ml 2015-02-18T19:10:17.500Z 36.5571 -98.1557 10km E of Helena, Oklahoma 5.535 3.4 ml 2015-02-17T17:13:19.100Z 36.5323 -98.2136 5km ESE of Helena, Oklahoma 4.514 3.6 ml 2015-02-17T15:21:48.300Z 36.0172 -97.0367 4km N of Perkins, Oklahoma 4.2 3 ml 2015-02-16T12:54:13.000Z 36.8131 -98.2783 9km NE of Cherokee, Oklahoma 3.512 3.5 ml 2015-02-16T09:50:26.200Z 35.8175 -97.449 7km SSW of Guthrie, Oklahoma 5.274 3.5 mwr 2015-02-15T18:27:08.430Z 37.1866 -97.8997 12km ENE of Anthony, Kansas 5 3.6 mwr 2015-02-15T13:15:38.700Z 36.5986 -97.6191 25km SSE of Medford, Oklahoma 5.723 3 ml 2015-02-15T06:42:49.500Z 36.5966 -97.6376 24km SSE of Medford, Oklahoma 5.214 3.3 ml 2015-02-15T04:22:05.100Z 36.5984 -97.6223 25km SSE of Medford, Oklahoma 5.317 3.3 ml 2015-02-14T19:52:08.000Z 36.5975 -97.6293 25km SSE of Medford, Oklahoma 5.419 3.1 ml 2015-02-14T18:09:22.590Z 37.0208 -97.9057 18km SE of Anthony, Kansas 6 3 mb_lg 2015-02-14T17:23:04.900Z 36.5979 -97.6329 24km SSE of Medford, Oklahoma 3.53 3.6 ml 2015-02-14T17:13:21.900Z 36.5972 -97.6316 25km SSE of Medford, Oklahoma 5 3.2 ml Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 33 of 52
Preparer: D. Horne; Date: 02/15/21 Table 2 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Historical Earthquakes in Oklahoma Greater than 3.0 Magnitude (As of February 9, 2021)
Date and Time Latitude Longitude Epicenter Depth (km) Magnitude Mag. Type1 2015-02-14T16:39:04.600Z 36.5983 -97.6289 24km SSE of Medford, Oklahoma 5 3.8 ml 2015-02-13T17:42:40.900Z 36.9518 -97.6244 9km S of Caldwell, Kansas 6.991 3.4 mwr 2015-02-12T17:45:09.700Z 36.8911 -97.8886 16km NW of Medford, Oklahoma 3.437 3.5 ml 2015-02-12T04:51:50.700Z 36.1864 -97.0284 8km NNE of Stillwater, Oklahoma 4.77 3.2 ml 2015-02-11T23:56:32.300Z 36.7003 -97.8236 14km SW of Medford, Oklahoma 5.788 3.1 ml 2015-02-11T22:31:23.400Z 36.8113 -98.2776 9km NE of Cherokee, Oklahoma 5.839 3.3 ml 2015-02-11T17:23:58.700Z 36.6992 -97.8262 14km SW of Medford, Oklahoma 5.36 3.1 ml 2015-02-10T20:23:36.500Z 36.8383 -97.8133 7km WNW of Medford, Oklahoma 5.965 3 ml 2015-02-10T07:32:36.000Z 37.1923 -98.0212 4km NNE of Anthony, Kansas 5 3.6 mb_lg 2015-02-09T20:30:23.500Z 36.6081 -98.3483 9km NW of Helena, Oklahoma 5 3 ml 2015-02-08T10:15:13.400Z 35.8587 -97.3455 7km ESE of Guthrie, Oklahoma 6.041 3.1 ml 2015-02-08T04:41:38.700Z 36.256 -97.264 4km SSE of Perry, Oklahoma 6.1 3.3 ml 2015-02-08T04:03:37.600Z 36.943 -97.622 9km S of Caldwell, Kansas 4 3.2 ml 2015-02-07T18:40:49.500Z 36.2611 -97.2763 3km SSE of Perry, Oklahoma 5.405 3.9 mwr 2015-02-06T17:20:20.300Z 36.1264 -97.2791 18km S of Perry, Oklahoma 5 3.3 ml 2015-02-06T17:11:55.600Z 36.7309 -98.3345 3km SE of Cherokee, Oklahoma 4.066 3.1 ml 2015-02-06T16:49:05.800Z 36.7311 -98.3342 3km SE of Cherokee, Oklahoma 4.383 3.4 ml 2015-02-06T15:31:08.500Z 35.5456 -96.7584 9km NW of Prague, Oklahoma 4.959 3.1 ml 2015-02-05T22:48:24.100Z 36.9461 -97.6193 9km S of Caldwell, Kansas 2.135 3.4 ml 2015-02-05T22:24:15.500Z 36.8119 -98.2803 9km NE of Cherokee, Oklahoma 6.974 3.3 ml 2015-02-05T15:08:40.800Z 36.8147 -98.2915 8km NE of Cherokee, Oklahoma 4.381 4.2 mwr 2015-02-05T07:06:46.900Z 36.5333 -98.2166 4km ESE of Helena, Oklahoma 4.89 3.4 mwr 2015-02-05T05:09:21.900Z 36.8162 -98.2863 9km NE of Cherokee, Oklahoma 5.537 3.3 ml 2015-02-05T01:36:01.200Z 36.8909 -97.8942 17km WNW of Medford, Oklahoma 5 3.2 mb_lg 2015-02-04T18:20:48.040Z 36.814 -98.289 8km NE of Cherokee, Oklahoma 4.6 3.2 ml 2015-02-04T15:20:55.100Z 36.311 -98.1639 24km W of Waukomis, Oklahoma 7.446 3.1 ml 2015-02-04T13:20:31.880Z 37.1893 -97.9011 12km ENE of Anthony, Kansas 5 3.4 mwr 2015-02-04T09:12:35.900Z 36.8093 -98.3525 6km N of Cherokee, Oklahoma 4.764 3 ml 2015-02-03T22:19:14.370Z 37.0922 -97.6568 7km NNW of Caldwell, Kansas 5 3.4 mb_lg 2015-02-03T12:37:27.810Z 36.8402 -98.3987 10km NNW of Cherokee, Oklahoma 5 3.8 mb_lg 2015-02-03T12:37:17.400Z 36.81 -98.2847 8km NE of Cherokee, Oklahoma 6.324 3.5 ml 2015-02-02T22:09:36.850Z 36.264 -97.285 2km S of Perry, Oklahoma 6.9 3.5 ml 2015-02-02T13:34:21.700Z 36.6491 -97.6634 18km SSE of Medford, Oklahoma 4.88 3.1 ml 2015-02-01T18:06:04.000Z 36.9454 -97.6297 9km SSW of Caldwell, Kansas 4.842 3.7 mwr 2015-01-30T14:24:22.100Z 36.8078 -98.3641 5km N of Cherokee, Oklahoma 3.798 3.6 mwr 2015-01-30T00:07:31.600Z 35.5882 -97.3994 7km NNW of Spencer, Oklahoma 6.97 3.2 ml 2015-01-29T21:55:09.300Z 36.3091 -98.1676 24km W of Waukomis, Oklahoma 6.79 3 ml 2015-01-29T20:44:42.200Z 36.9447 -97.6307 9km SSW of Caldwell, Kansas 6.031 3.3 ml 2015-01-29T20:21:38.710Z 37.1852 -97.8565 15km ENE of Anthony, Kansas 5 3.4 mwr 2015-01-29T19:38:30.800Z 35.5391 -96.7613 9km NW of Prague, Oklahoma 5 3.3 ml 2015-01-29T05:58:18.090Z 37.1005 -97.6359 7km NNW of Caldwell, Kansas 6.49 3.1 mb_lg 2015-01-29T03:33:26.900Z 37.0832 -97.633 6km NNW of Caldwell, Kansas 5 3.1 mb_lg 2015-01-28T17:42:02.620Z 37.2079 -97.8753 15km ENE of Anthony, Kansas 5 3 mb_lg 2015-01-28T15:48:35.100Z 36.6159 -97.705 21km S of Medford, Oklahoma 4.912 3 ml 2015-01-28T13:22:37.800Z 36.8092 -98.3628 6km N of Cherokee, Oklahoma 3.778 3 ml 2015-01-28T09:33:50.000Z 35.5399 -97.2314 5km NE of Choctaw, Oklahoma 6.809 3.2 ml 2015-01-28T05:39:46.200Z 36.1271 -97.2758 18km S of Perry, Oklahoma 5.131 3.2 mb_lg 2015-01-27T17:47:01.600Z 36.2556 -97.2621 4km SSE of Perry, Oklahoma 4.905 3 ml 2015-01-27T16:55:17.700Z 36.631 -97.7064 19km S of Medford, Oklahoma 5.438 3.2 ml 2015-01-27T16:10:55.700Z 36.9543 -97.6184 8km S of Caldwell, Kansas 7.886 3.1 ml 2015-01-27T15:58:40.100Z 36.6288 -97.7124 19km S of Medford, Oklahoma 5 4 mwr 2015-01-27T11:36:36.600Z 36.2589 -97.2787 3km SSE of Perry, Oklahoma 5 3.5 mb_lg 2015-01-27T11:31:09.800Z 36.2618 -97.2643 3km SE of Perry, Oklahoma 3.408 4.2 mwr 2015-01-27T07:38:05.100Z 37.0817 -97.6618 7km NW of Caldwell, Kansas 4.21 3.4 mb_lg 2015-01-27T05:28:53.580Z 37.0805 -97.6717 7km NW of Caldwell, Kansas 5.68 3.1 mb_lg 2015-01-26T23:46:23.200Z 36.5572 -98.6461 27km S of Alva, Oklahoma 13.733 3.1 mb_lg 2015-01-26T21:45:13.900Z 35.8082 -97.4173 7km S of Guthrie, Oklahoma 6.034 3.2 mb_lg 2015-01-26T19:30:44.700Z 36.8479 -97.7016 5km NNE of Medford, Oklahoma 6.863 4.2 ml 2015-01-26T00:18:29.500Z 36.2309 -97.5771 26km WSW of Perry, Oklahoma 6.084 3.2 mb_lg 2015-01-25T09:36:32.200Z 36.9524 -97.6149 8km S of Caldwell, Kansas 5.737 3.7 mwr 2015-01-25T07:29:34.200Z 36.1268 -97.2785 18km S of Perry, Oklahoma 4.762 3.2 mb_lg 2015-01-24T20:38:45.400Z 36.8215 -97.7019 3km ENE of Medford, Oklahoma 5 3.4 ml 2015-01-24T15:36:46.500Z 36.8067 -98.3602 5km N of Cherokee, Oklahoma 4.565 3.4 mwr Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 34 of 52
Preparer: D. Horne; Date: 02/15/21 Table 2 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Historical Earthquakes in Oklahoma Greater than 3.0 Magnitude (As of February 9, 2021)
Date and Time Latitude Longitude Epicenter Depth (km) Magnitude Mag. Type1 2015-01-24T02:23:24.400Z 36.367 -98.057 16km W of Enid, Oklahoma 7 3.6 mb_lg 2015-01-23T21:49:00.000Z 36.6544 -97.6395 18km SSE of Medford, Oklahoma 5.084 3.2 ml 2015-01-23T04:00:41.470Z 37.0946 -97.6561 8km NNW of Caldwell, Kansas 5.07 3.7 mb_lg 2015-01-22T05:36:27.600Z 36.1299 -97.2733 17km S of Perry, Oklahoma 5.09 3.1 mb_lg 2015-01-22T03:23:22.300Z 36.9312 -97.6441 11km SSW of Caldwell, Kansas 2.275 3.1 ml 2015-01-20T15:27:03.300Z 36.9395 -97.6179 10km S of Caldwell, Kansas 1.649 3.5 mwr 2015-01-20T00:25:47.400Z 36.8046 -98.1662 17km ENE of Cherokee, Oklahoma 6.086 3.1 mb_lg 2015-01-19T21:17:09.900Z 36.2881 -96.8017 5km S of Pawnee, Oklahoma 3.966 3 ml 2015-01-19T14:48:13.400Z 36.2908 -96.811 5km S of Pawnee, Oklahoma 3.947 3.4 mb_lg 2015-01-19T10:19:20.200Z 36.8025 -98.1959 15km ENE of Cherokee, Oklahoma 4.268 3.8 mwr 2015-01-19T09:54:31.660Z 37.2146 -97.8723 15km ENE of Anthony, Kansas 5 3.5 mwr 2015-01-19T01:01:03.300Z 36.8175 -97.709 2km ENE of Medford, Oklahoma 4.946 3.8 ml 2015-01-18T23:54:38.800Z 36.9745 -97.8559 21km NNW of Medford, Oklahoma 5 3.1 ml 2015-01-18T16:23:04.600Z 36.7234 -97.8273 12km SW of Medford, Oklahoma 4.952 3 mb_lg 2015-01-18T10:17:26.700Z 36.7989 -98.2708 9km ENE of Cherokee, Oklahoma 6.003 3.1 mb_lg 2015-01-17T22:42:13.200Z 35.8936 -97.2665 5km S of Langston, Oklahoma 6.898 3.2 ml 2015-01-17T17:47:26.100Z 36.2888 -96.8061 5km S of Pawnee, Oklahoma 5 3.1 mb_lg 2015-01-17T06:33:41.400Z 36.603 -98.2171 7km NE of Helena, Oklahoma 5 3.4 mb_lg 2015-01-17T01:04:17.100Z 36.93 -98.0313 24km S of Anthony, Kansas 5 3.2 ml 2015-01-16T22:29:34.000Z 36.6032 -97.6125 25km SSE of Medford, Oklahoma 5.645 3.4 ml 2015-01-16T13:41:31.600Z 36.4888 -99.0853 12km ENE of Mooreland, Oklahoma 7.684 3.1 ml 2015-01-16T06:53:31.300Z 36.9377 -97.9071 21km NW of Medford, Oklahoma 4.546 3 ml 2015-01-16T03:58:19.400Z 35.8155 -97.4399 7km S of Guthrie, Oklahoma 6 3.1 mb_lg 2015-01-15T18:47:20.800Z 36.9524 -97.6149 8km S of Caldwell, Kansas 5.049 3.6 ml 2015-01-15T07:47:28.100Z 36.715 -97.8734 16km SW of Medford, Oklahoma 5.58 3.1 mb_lg 2015-01-15T07:36:31.200Z 36.3294 -97.5209 21km WNW of Perry, Oklahoma 7.045 3.3 ml 2015-01-15T06:57:07.400Z 36.9518 -97.6158 8km S of Caldwell, Kansas 5 3 ml 2015-01-14T18:23:11.800Z 35.8765 -97.2447 7km S of Langston, Oklahoma 5.269 3 ml 2015-01-14T03:45:52.000Z 36.7276 -98.3125 4km SE of Cherokee, Oklahoma 4.915 3.3 ml 2015-01-14T01:42:36.000Z 36.3318 -97.516 20km WNW of Perry, Oklahoma 7.158 3.1 ml 2015-01-14T00:46:27.600Z 36.7537 -97.5552 16km ESE of Medford, Oklahoma 5 3.1 mb_lg 2015-01-14T00:06:42.400Z 35.8085 -97.4146 7km S of Guthrie, Oklahoma 6.712 3 mb_lg 2015-01-13T09:59:46.400Z 36.8175 -97.7066 2km ENE of Medford, Oklahoma 5.5 3.6 mb_lg 2015-01-13T02:10:25.200Z 35.8755 -97.2394 7km S of Langston, Oklahoma 6.577 3.1 ml 2015-01-11T10:28:21.900Z 35.805 -97.4063 8km SSE of Guthrie, Oklahoma 6.686 3.4 mwr 2015-01-10T16:36:26.260Z 37.1703 -97.9438 7km ENE of Anthony, Kansas 5 3.2 mb_lg 2015-01-10T13:27:25.000Z 36.23 -97.57 26km WSW of Perry, Oklahoma 5 3.2 ml 2015-01-10T08:39:19.100Z 36.9163 -97.7994 13km NNW of Medford, Oklahoma 3.081 3 ml 2015-01-10T06:14:03.300Z 36.2699 -97.2469 4km ESE of Perry, Oklahoma 5.329 3.2 mb_lg 2015-01-10T05:06:52.600Z 36.2627 -97.2732 3km SSE of Perry, Oklahoma 4.949 3.1 mb_lg 2015-01-10T04:26:07.500Z 35.8136 -97.4153 7km S of Guthrie, Oklahoma 7.063 3 ml 2015-01-09T16:51:50.400Z 36.2886 -96.8926 9km SW of Pawnee, Oklahoma 4.898 3.3 ml 2015-01-09T16:39:48.700Z 36.2842 -96.9784 16km WSW of Pawnee, Oklahoma 5.284 3.5 ml 2015-01-09T06:53:57.200Z 35.8159 -97.4212 7km S of Guthrie, Oklahoma 7.452 3.1 ml 2015-01-09T06:44:16.400Z 35.8143 -97.418 7km S of Guthrie, Oklahoma 6.593 3.5 mwr 2015-01-08T22:03:42.200Z 36.5852 -98.4708 18km WNW of Helena, Oklahoma 5 3 ml 2015-01-08T05:06:59.800Z 36.8723 -98.1351 23km ENE of Cherokee, Oklahoma 7.034 3 ml 2015-01-07T19:41:37.900Z 35.8173 -97.4291 6km S of Guthrie, Oklahoma 6.933 3.8 mwr 2015-01-06T23:10:48.300Z 36.6932 -97.6764 13km SSE of Medford, Oklahoma 4.809 3 ml 2015-01-06T18:28:04.200Z 36.2592 -97.2609 4km SE of Perry, Oklahoma 5.572 3.1 ml 2015-01-06T15:45:15.300Z 36.2591 -97.26 4km SE of Perry, Oklahoma 5.456 3.1 ml 2015-01-05T22:27:39.800Z 36.2603 -97.2616 4km SE of Perry, Oklahoma 4.356 3.6 mwr 2015-01-05T22:06:43.600Z 36.2611 -97.2623 3km SE of Perry, Oklahoma 5 3.6 mwr 2015-01-05T13:52:06.700Z 36.7453 -98.1112 21km E of Cherokee, Oklahoma 6.522 3.1 ml 2015-01-05T12:57:34.830Z 37.0214 -98.0891 15km SSW of Anthony, Kansas 5 3 mb_lg 2015-01-05T12:14:19.800Z 36.7411 -98.1117 21km E of Cherokee, Oklahoma 6.598 3.5 ml 2015-01-04T21:37:01.300Z 35.8196 -97.4362 6km S of Guthrie, Oklahoma 6.604 3.6 mwr 2015-01-04T10:55:39.800Z 37.2454 -98.0233 4km S of Harper, Kansas 4.87 3.5 mb_lg 2015-01-03T18:28:47.200Z 36.853 -98.2769 13km NNE of Cherokee, Oklahoma 6.269 3 ml 2015-01-03T16:54:48.400Z 36.6592 -97.6265 18km SSE of Medford, Oklahoma 5 3.4 ml 2015-01-03T12:16:30.600Z 36.8466 -97.8137 8km WNW of Medford, Oklahoma 6.076 3.4 ml 2015-01-02T16:52:28.500Z 36.2859 -96.8989 10km SW of Pawnee, Oklahoma 4.005 3 ml 2015-01-02T09:23:24.200Z 36.7301 -98.3055 5km ESE of Cherokee, Oklahoma 5.566 3.1 ml Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 35 of 52
Preparer: D. Horne; Date: 02/15/21 Table 2 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Historical Earthquakes in Oklahoma Greater than 3.0 Magnitude (As of February 9, 2021)
Date and Time Latitude Longitude Epicenter Depth (km) Magnitude Mag. Type1 2015-01-02T00:19:33.300Z 36.8885 -98.2399 18km NE of Cherokee, Oklahoma 6.652 3.1 ml 2015-01-01T14:44:08.500Z 36.8137 -97.71 2km ENE of Medford, Oklahoma 3.2 3.6 ml 2015-01-01T12:05:49.100Z 36.929 -97.4929 15km SE of Caldwell, Kansas 6.535 3.1 ml 2015-01-01T00:26:09.600Z 36.6558 -97.6348 18km SSE of Medford, Oklahoma 5.319 3 ml 2014-12-31T07:19:10.200Z 36.7211 -98.1713 16km ESE of Cherokee, Oklahoma 5.836 3.1 ml 2014-12-30T21:37:24.900Z 36.7251 -98.3084 5km SE of Cherokee, Oklahoma 5.485 3.8 ml 2014-12-30T21:24:51.100Z 36.7255 -98.3075 5km SE of Cherokee, Oklahoma 5.55 3.9 ml 2014-12-30T15:11:50.100Z 36.5709 -98.3251 5km WNW of Helena, Oklahoma 5 3.1 ml 2014-12-30T12:43:58.900Z 36.3619 -97.4506 16km WNW of Perry, Oklahoma 6.495 3.1 ml 2014-12-30T11:05:53.500Z 36.6252 -97.7233 20km S of Medford, Oklahoma 6.548 3 ml 2014-12-29T17:50:55.000Z 36.7545 -98.1778 15km E of Cherokee, Oklahoma 5 3.1 ml 2014-12-29T16:15:55.200Z 36.8363 -97.8757 13km WNW of Medford, Oklahoma 4.874 3.3 ml 2014-12-29T08:30:05.100Z 36.361 -97.4511 16km WNW of Perry, Oklahoma 5 3 ml 2014-12-28T10:02:56.700Z 35.8147 -97.4181 7km S of Guthrie, Oklahoma 7.123 3 ml 2014-12-27T16:39:57.000Z 36.2837 -96.8918 9km SW of Pawnee, Oklahoma 4.466 3.4 ml 2014-12-27T11:17:14.500Z 35.9107 -97.2513 3km S of Langston, Oklahoma 4.832 3 ml 2014-12-27T03:21:36.200Z 35.8143 -97.4177 7km S of Guthrie, Oklahoma 6.738 3 ml 2014-12-26T18:03:37.500Z 35.8104 -97.416 7km S of Guthrie, Oklahoma 5.483 3.1 ml 2014-12-26T17:12:57.300Z 36.8021 -98.1623 18km ENE of Cherokee, Oklahoma 5 3 ml 2014-12-25T23:11:36.400Z 36.368 -97.0684 21km ENE of Perry, Oklahoma 1.98 3.9 ml 2014-12-25T20:32:49.500Z 35.8124 -97.4167 7km S of Guthrie, Oklahoma 6.945 3.5 mwr 2014-12-23T20:35:28.400Z 36.8913 -97.6911 10km NNE of Medford, Oklahoma 5.554 3 ml 2014-12-22T11:12:38.300Z 36.2766 -97.2252 5km ESE of Perry, Oklahoma 6.162 3 ml 2014-12-22T07:45:07.010Z 37.2649 -97.9365 8km ESE of Harper, Kansas 6.02 3.5 mb_lg 2014-12-22T05:05:53.500Z 36.0671 -97.3586 16km NW of Langston, Oklahoma 6.97 3 ml 2014-12-22T03:40:56.800Z 36.8024 -98.1933 15km ENE of Cherokee, Oklahoma 5 3.6 mwr 2014-12-21T18:42:55.300Z 36.6285 -97.7101 19km S of Medford, Oklahoma 4.018 3.4 ml 2014-12-21T18:36:00.100Z 36.6267 -97.7149 20km S of Medford, Oklahoma 4.664 3.4 ml 2014-12-21T15:44:05.800Z 36.9379 -97.7253 14km SW of Caldwell, Kansas 1.487 3.3 ml 2014-12-21T08:53:23.400Z 36.5278 -98.227 4km ESE of Helena, Oklahoma 4.215 3 ml 2014-12-21T05:59:04.100Z 36.761 -97.5719 15km ESE of Medford, Oklahoma 7.594 3.1 ml 2014-12-21T01:17:09.400Z 36.1751 -97.3867 15km SW of Perry, Oklahoma 5.187 3 ml 2014-12-19T13:18:08.200Z 36.7564 -97.5659 15km ESE of Medford, Oklahoma 4.474 3.3 ml 2014-12-18T23:06:54.000Z 36.1511 -97.4904 23km SW of Perry, Oklahoma 4.659 3.4 mwr 2014-12-16T17:18:35.600Z 36.8689 -98.1236 24km ENE of Cherokee, Oklahoma 5.638 3.1 ml 2014-12-16T17:01:26.800Z 36.8676 -98.1224 24km ENE of Cherokee, Oklahoma 5.69 3.4 ml 2014-12-15T18:22:17.000Z 35.4929 -96.8293 6km E of Meeker, Oklahoma 6.581 3 ml 2014-12-15T17:01:56.700Z 36.1821 -97.3721 14km SSW of Perry, Oklahoma 5.78 3.2 ml 2014-12-15T02:32:50.700Z 36.3126 -96.7571 5km SE of Pawnee, Oklahoma 4.047 3 ml 2014-12-14T22:22:55.200Z 36.3274 -97.5262 21km W of Perry, Oklahoma 6.641 3.2 ml 2014-12-14T21:18:20.500Z 36.3187 -96.7553 4km ESE of Pawnee, Oklahoma 4.679 4 mwr 2014-12-14T21:07:13.400Z 36.3245 -97.5351 22km W of Perry, Oklahoma 6.649 3.1 ml 2014-12-14T16:09:47.500Z 36.3274 -97.5343 22km W of Perry, Oklahoma 5.511 3 ml 2014-12-14T15:48:41.600Z 36.3258 -97.5324 22km W of Perry, Oklahoma 6.423 3.8 ml 2014-12-14T10:19:54.700Z 36.3176 -96.7569 4km ESE of Pawnee, Oklahoma 5.221 3.1 ml 2014-12-14T09:14:21.100Z 36.8706 -98.1272 24km ENE of Cherokee, Oklahoma 5.413 3.9 mwr 2014-12-14T05:01:42.300Z 36.3251 -97.5296 22km W of Perry, Oklahoma 6.574 3 ml 2014-12-13T09:51:30.700Z 36.3241 -97.5347 22km W of Perry, Oklahoma 6.495 3.6 ml 2014-12-12T19:48:36.900Z 36.2623 -97.0378 16km N of Stillwater, Oklahoma 5.088 3.3 ml 2014-12-12T11:31:46.400Z 36.3524 -97.091 19km ENE of Perry, Oklahoma 8.474 3.3 ml 2014-12-11T20:51:03.200Z 36.8707 -98.1223 24km ENE of Cherokee, Oklahoma 5.615 3.4 ml 2014-12-11T19:57:45.800Z 36.9511 -97.7998 17km NNW of Medford, Oklahoma 5 3.1 ml 2014-12-11T07:53:49.400Z 36.7616 -98.0542 27km E of Cherokee, Oklahoma 3.663 3.8 mwr 2014-12-10T17:43:23.700Z 36.1473 -97.0076 5km NE of Stillwater, Oklahoma 5.516 3 ml 2014-12-10T16:47:45.300Z 36.8722 -98.1235 24km ENE of Cherokee, Oklahoma 5.318 3 ml 2014-12-10T10:09:13.900Z 35.8176 -97.4329 6km S of Guthrie, Oklahoma 4.865 3.1 ml 2014-12-10T06:39:25.200Z 36.8405 -97.8152 8km WNW of Medford, Oklahoma 5.651 3.1 ml 2014-12-09T08:38:01.300Z 36.751 -97.556 17km ESE of Medford, Oklahoma 4.531 3.2 ml 2014-12-09T06:28:33.100Z 35.8188 -96.8213 14km NNE of Chandler, Oklahoma 6.036 3.7 ml 2014-12-08T14:05:51.800Z 35.7378 -97.5863 13km NW of Edmond, Oklahoma 6.978 3.2 ml 2014-12-07T22:13:08.300Z 35.8197 -97.4393 6km S of Guthrie, Oklahoma 5.147 3.6 mwr 2014-12-07T20:57:22.500Z 34.1752 -96.7559 9km N of Madill, Oklahoma 5 3 ml 2014-12-06T07:04:22.100Z 36.7612 -98.0514 27km E of Cherokee, Oklahoma 5.8 3.2 ml Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 36 of 52
Preparer: D. Horne; Date: 02/15/21 Table 2 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Historical Earthquakes in Oklahoma Greater than 3.0 Magnitude (As of February 9, 2021)
Date and Time Latitude Longitude Epicenter Depth (km) Magnitude Mag. Type1 2014-12-05T03:54:22.500Z 36.023 -97.0946 7km NW of Perkins, Oklahoma 4.007 3.7 mwr 2014-12-04T23:29:58.800Z 35.8999 -97.2543 5km S of Langston, Oklahoma 4.961 3.1 ml 2014-12-04T18:04:17.800Z 36.758 -97.5781 14km ESE of Medford, Oklahoma 5 3.5 ml 2014-12-04T11:34:52.300Z 36.2871 -97.4335 13km W of Perry, Oklahoma 7.177 3 ml 2014-12-04T09:47:43.520Z 37.1969 -98.0016 5km NNE of Anthony, Kansas 6.68 3.1 mb_lg 2014-12-04T08:38:29.400Z 36.4207 -97.2902 14km N of Perry, Oklahoma 7.671 3 ml 2014-12-04T06:39:43.300Z 35.8197 -97.4383 6km S of Guthrie, Oklahoma 5 3.2 mwr 2014-12-03T13:33:33.600Z 36.5021 -99.0279 17km ENE of Mooreland, Oklahoma 6.661 3.7 ml 2014-12-02T16:25:53.500Z 36.1767 -97.2641 12km S of Perry, Oklahoma 4.973 3 ml 2014-12-02T12:40:13.520Z 37.2621 -97.6335 14km S of Conway Springs, Kansas 7.78 3 mb_lg 2014-12-02T12:04:29.400Z 35.671 -97.3788 9km ENE of Edmond, Oklahoma 7.103 3.4 mwr 2014-12-01T17:57:28.700Z 36.4955 -99.0834 12km ENE of Mooreland, Oklahoma 8.502 3.3 mwr 2014-11-30T12:18:58.700Z 35.6727 -97.3788 9km ENE of Edmond, Oklahoma 6.265 3.3 mwr 2014-11-30T10:24:44.400Z 36.6028 -97.6068 25km SSE of Medford, Oklahoma 5.684 4 mwr 2014-11-30T08:54:36.000Z 36.6013 -97.7654 22km S of Medford, Oklahoma 5 3 ml 2014-11-30T06:59:56.000Z 35.5382 -96.7714 9km NW of Prague, Oklahoma 6.89 3.6 mwr 2014-11-28T08:36:36.100Z 36.6286 -97.981 27km NNW of Enid, Oklahoma 5.846 3 ml 2014-11-28T03:35:25.900Z 36.8192 -97.711 2km NE of Medford, Oklahoma 4.853 3 ml 2014-11-27T00:54:23.900Z 36.5886 -97.8084 22km NNE of Enid, Oklahoma 6.198 3.1 ml 2014-11-26T19:29:19.000Z 35.8173 -97.4303 6km S of Guthrie, Oklahoma 5.551 3 ml 2014-11-26T16:54:04.400Z 36.1146 -97.3101 19km S of Perry, Oklahoma 4.272 3.1 ml 2014-11-26T14:56:40.600Z 35.8153 -97.419 7km S of Guthrie, Oklahoma 5.314 3.3 ml 2014-11-26T09:14:25.800Z 36.8171 -97.7105 2km ENE of Medford, Oklahoma 5.37 3 ml 2014-11-25T23:32:55.200Z 36.8106 -97.8672 11km W of Medford, Oklahoma 5.575 3.5 ml 2014-11-25T22:04:21.800Z 35.8184 -97.4304 6km S of Guthrie, Oklahoma 4.818 3.4 mwr 2014-11-25T14:43:40.000Z 36.8201 -97.7191 1km NE of Medford, Oklahoma 4.129 3.6 mwr 2014-11-25T01:43:39.300Z 36.8567 -97.8444 11km WNW of Medford, Oklahoma 3.901 3 ml 2014-11-25T00:16:51.700Z 35.8167 -97.4363 6km S of Guthrie, Oklahoma 5 3 ml 2014-11-24T19:05:57.500Z 36.8728 -98.3353 13km N of Cherokee, Oklahoma 5.326 3.7 mwr 2014-11-24T14:08:10.300Z 36.3264 -97.5278 21km W of Perry, Oklahoma 6.869 3 ml 2014-11-24T08:28:31.000Z 35.816 -97.433 7km S of Guthrie, Oklahoma 6.17 3.5 ml 2014-11-24T07:17:17.400Z 36.118 -97.2475 17km W of Stillwater, Oklahoma 3.956 3 ml 2014-11-24T06:55:53.700Z 36.327 -97.5289 22km W of Perry, Oklahoma 7.374 3.4 ml 2014-11-24T06:36:08.600Z 36.3276 -97.531 22km W of Perry, Oklahoma 5 3.8 mwr 2014-11-23T04:50:23.200Z 35.4947 -97.2623 0km ESE of Choctaw, Oklahoma 6.846 3 ml 2014-11-23T04:25:58.400Z 36.8291 -97.8669 12km WNW of Medford, Oklahoma 5 3.4 ml 2014-11-22T18:31:34.800Z 36.5947 -97.6484 24km SSE of Medford, Oklahoma 4.483 3.1 ml 2014-11-22T14:54:45.600Z 36.6375 -97.7712 19km S of Medford, Oklahoma 6.09 3 ml 2014-11-22T14:36:06.300Z 36.64 -97.7734 18km S of Medford, Oklahoma 6.197 3.5 ml 2014-11-22T09:39:29.000Z 36.7562 -97.5783 14km ESE of Medford, Oklahoma 5.106 3.7 ml 2014-11-22T02:39:42.000Z 36.1182 -97.4354 23km SW of Perry, Oklahoma 5.784 3.1 ml 2014-11-21T14:56:17.200Z 36.8791 -98.2434 17km NE of Cherokee, Oklahoma 4.459 3 ml 2014-11-21T13:03:42.400Z 36.8464 -97.8961 15km WNW of Medford, Oklahoma 5.469 3.3 ml 2014-11-19T14:17:29.500Z 36.9952 -97.9171 20km SSE of Anthony, Kansas 7.63 3.2 mb_lg 2014-11-19T13:28:52.700Z 36.1967 -96.7209 9km NNW of Yale, Oklahoma 5.266 3 ml 2014-11-19T12:19:02.100Z 36.8446 -97.8991 15km WNW of Medford, Oklahoma 5 3.1 ml 2014-11-19T04:06:50.900Z 36.5897 -98.2562 4km NNE of Helena, Oklahoma 6.164 3.1 ml 2014-11-19T03:34:24.700Z 35.9281 -97.4407 5km NNW of Guthrie, Oklahoma 5.895 3.3 ml 2014-11-18T21:43:55.100Z 36.2809 -96.9742 16km WSW of Pawnee, Oklahoma 5 3.4 ml 2014-11-18T16:16:07.600Z 36.8659 -98.3346 12km N of Cherokee, Oklahoma 5 3.6 ml 2014-11-17T20:40:52.300Z 36.4215 -97.037 22km WNW of Pawnee, Oklahoma 5 3 ml 2014-11-17T02:21:01.650Z 37.1918 -98.0232 4km N of Anthony, Kansas 5.57 3.1 mb_lg 2014-11-16T22:41:49.600Z 36.2796 -97.2361 4km ESE of Perry, Oklahoma 2.806 3.3 ml 2014-11-16T10:32:40.400Z 36.2777 -96.9308 13km WSW of Pawnee, Oklahoma 4.902 3.2 ml 2014-11-16T08:59:12.570Z 37.1778 -98.019 2km NNE of Anthony, Kansas 6.26 3.1 mb_lg 2014-11-16T07:26:40.100Z 36.0649 -97.3241 14km NNW of Langston, Oklahoma 4.743 3.4 ml 2014-11-15T13:39:57.600Z 36.6169 -97.7098 21km S of Medford, Oklahoma 6.204 3.4 ml 2014-11-15T10:18:13.470Z 37.2293 -98.0328 6km S of Harper, Kansas 6.4 3.8 mwr 2014-11-14T15:41:54.700Z 36.0238 -97.0914 7km NW of Perkins, Oklahoma 4.651 3 ml 2014-11-14T11:58:31.100Z 36.6258 -98.0001 25km ENE of Helena, Oklahoma 3.524 3.6 ml 2014-11-14T07:43:23.800Z 36.8431 -97.8774 13km WNW of Medford, Oklahoma 4.849 3 ml 2014-11-14T07:34:56.800Z 36.8442 -97.8855 14km WNW of Medford, Oklahoma 4.438 3.1 ml 2014-11-14T07:10:19.800Z 36.8477 -97.8768 13km WNW of Medford, Oklahoma 4.874 3 ml Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 37 of 52
Preparer: D. Horne; Date: 02/15/21 Table 2 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Historical Earthquakes in Oklahoma Greater than 3.0 Magnitude (As of February 9, 2021)
Date and Time Latitude Longitude Epicenter Depth (km) Magnitude Mag. Type1 2014-11-14T07:06:51.000Z 36.8455 -97.8767 13km WNW of Medford, Oklahoma 5.159 3.3 ml 2014-11-14T03:54:32.500Z 36.1653 -96.9009 15km ENE of Stillwater, Oklahoma 5.856 3 ml 2014-11-13T14:34:23.800Z 36.7532 -97.5616 16km ESE of Medford, Oklahoma 4.265 3.2 ml 2014-11-13T01:28:31.300Z 35.3504 -96.5389 16km SSW of Boley, Oklahoma 3.079 3.6 mwr 2014-11-12T21:40:00.550Z 37.2713 -97.6206 13km S of Conway Springs, Kansas 4.03 4.9 mww 2014-11-12T21:37:11.000Z 36.6485 -97.6016 21km SE of Medford, Oklahoma 5.37 3.1 ml 2014-11-11T23:17:11.700Z 36.765 -97.5605 16km ESE of Medford, Oklahoma 6.813 3 ml 2014-11-11T14:09:41.900Z 36.7559 -97.5648 16km ESE of Medford, Oklahoma 5.173 3.5 ml 2014-11-10T02:30:56.700Z 36.7555 -97.5646 16km ESE of Medford, Oklahoma 4.062 3.5 ml 2014-11-10T02:11:30.300Z 36.0242 -97.093 7km NW of Perkins, Oklahoma 4.74 3.1 ml 2014-11-09T20:10:18.900Z 36.0244 -97.0975 8km NW of Perkins, Oklahoma 3.412 3.8 mwr 2014-11-09T18:39:54.700Z 36.3306 -97.5206 21km WNW of Perry, Oklahoma 5 3.1 ml 2014-11-09T12:55:44.700Z 36.2761 -97.2619 2km ESE of Perry, Oklahoma 7.026 3.1 ml 2014-11-09T01:20:39.200Z 36.7135 -98.0413 27km NE of Helena, Oklahoma 4.733 3 ml 2014-11-09T00:35:15.500Z 36.3298 -97.5266 21km WNW of Perry, Oklahoma 11.185 3.3 mwr 2014-11-08T10:10:18.500Z 36.3933 -97.2978 11km N of Perry, Oklahoma 6.373 3 ml 2014-11-08T09:28:00.800Z 36.1734 -96.8468 14km WNW of Yale, Oklahoma 5.264 3 ml 2014-11-07T20:08:51.400Z 36.6065 -97.8147 23km SSW of Medford, Oklahoma 5.876 3.2 ml 2014-11-06T01:35:02.790Z 37.2082 -98.039 6km N of Anthony, Kansas 10.67 3.2 mb_lg 2014-11-05T10:07:27.400Z 37.1979 -98.0516 5km NNW of Anthony, Kansas 8.09 3.2 mb_lg 2014-11-05T02:05:38.700Z 36.5865 -97.7806 22km NNE of Enid, Oklahoma 5 3 ml 2014-11-04T23:13:50.300Z 35.4607 -97.0329 5km ENE of McLoud, Oklahoma 6.261 3.2 ml 2014-11-04T16:46:37.200Z 36.5872 -97.7776 23km NNE of Enid, Oklahoma 5 3 ml 2014-11-04T04:16:48.700Z 36.7535 -97.5583 16km ESE of Medford, Oklahoma 4.322 3 ml 2014-11-03T22:16:50.900Z 35.7762 -97.4563 11km SSW of Guthrie, Oklahoma 4.906 3 ml 2014-11-03T07:10:32.500Z 35.6073 -97.2105 6km SSW of Luther, Oklahoma 6.009 3.3 ml 2014-11-03T05:58:29.100Z 35.6063 -97.2121 6km SSW of Luther, Oklahoma 5.941 3 ml 2014-11-02T00:58:36.100Z 36.8427 -97.7538 4km NNW of Medford, Oklahoma 3.653 3.1 ml 2014-11-01T06:03:16.000Z 36.0481 -97.2529 11km N of Langston, Oklahoma 5 3 mwr 2014-10-31T06:22:59.400Z 36.4912 -99.0812 12km ENE of Mooreland, Oklahoma 7.446 3.4 mwr 2014-10-31T00:49:33.900Z 36.6076 -97.6706 22km SSE of Medford, Oklahoma 3.584 3.1 ml 2014-10-31T00:39:28.300Z 35.9662 -97.3781 10km NNE of Guthrie, Oklahoma 4.542 3.2 ml 2014-10-30T18:57:02.100Z 36.045 -97.2577 11km N of Langston, Oklahoma 3.793 3.3 mwr 2014-10-29T16:53:31.600Z 35.7338 -97.5268 10km NNW of Edmond, Oklahoma 5.947 3.1 mwr 2014-10-29T00:29:08.900Z 36.1112 -97.4324 22km NE of Crescent, Oklahoma 2.988 3.1 ml 2014-10-27T10:42:30.300Z 36.4996 -99.0809 12km ENE of Mooreland, Oklahoma 7.121 3.5 ml 2014-10-26T18:23:10.000Z 36.4904 -99.0885 11km ENE of Mooreland, Oklahoma 8.649 3.7 ml 2014-10-25T20:21:10.300Z 36.5062 -99.0278 17km ENE of Mooreland, Oklahoma 5 3.1 ml 2014-10-25T17:10:54.300Z 35.5446 -97.2373 5km NNE of Choctaw, Oklahoma 6.819 3.2 ml 2014-10-25T12:36:15.000Z 35.8596 -97.3044 10km SSW of Langston, Oklahoma 5 3.1 ml 2014-10-23T07:06:03.000Z 36.6797 -97.7149 14km S of Medford, Oklahoma 3.899 3.1 ml 2014-10-22T23:48:07.760Z 37.0294 -97.8876 18km SE of Anthony, Kansas 5.9 3.3 mb_lg 2014-10-22T22:31:29.800Z 36.4994 -99.0632 14km ENE of Mooreland, Oklahoma 7.259 3.2 ml 2014-10-22T15:58:22.200Z 36.5028 -99.0603 14km ENE of Mooreland, Oklahoma 6.907 3.5 ml 2014-10-21T11:55:43.980Z 37.0377 -97.8947 17km SE of Anthony, Kansas 5.15 3 mb_lg 2014-10-21T08:55:46.200Z 36.6352 -97.7001 19km S of Medford, Oklahoma 3.93 3 ml 2014-10-21T00:46:17.800Z 36.7435 -97.8837 15km WSW of Medford, Oklahoma 2.392 3.3 ml 2014-10-20T20:34:16.000Z 35.4166 -96.5579 10km SW of Boley, Oklahoma 4.833 3.5 ml 2014-10-20T15:35:29.500Z 36.6799 -98.1584 17km NE of Helena, Oklahoma 3.764 3 ml 2014-10-20T14:25:02.610Z 37.0422 -97.9304 15km SE of Anthony, Kansas 4.81 3.1 mb_lg 2014-10-19T17:11:17.000Z 36.4931 -99.0461 15km ENE of Mooreland, Oklahoma 3.988 3 ml 2014-10-19T03:04:01.000Z 36.2797 -96.9232 12km WSW of Pawnee, Oklahoma 6.007 3 ml 2014-10-19T01:49:44.100Z 36.2821 -96.9302 12km WSW of Pawnee, Oklahoma 5 3 ml 2014-10-19T01:16:13.100Z 36.2852 -96.9284 12km WSW of Pawnee, Oklahoma 4.364 3.4 ml 2014-10-18T19:26:13.200Z 36.2042 -97.5339 24km WSW of Perry, Oklahoma 4.83 3 ml 2014-10-18T12:34:23.800Z 36.5076 -99.0579 15km ENE of Mooreland, Oklahoma 5 3 ml 2014-10-17T16:56:42.300Z 36.2135 -97.5384 24km WSW of Perry, Oklahoma 5 3.3 ml 2014-10-17T16:47:41.700Z 36.5133 -99.0507 16km ENE of Mooreland, Oklahoma 6.113 3.2 ml 2014-10-17T15:11:23.400Z 35.8185 -97.415 6km S of Guthrie, Oklahoma 5 3.2 ml 2014-10-17T12:51:54.900Z 36.5098 -99.0321 17km ENE of Mooreland, Oklahoma 5 3.1 ml 2014-10-17T12:43:48.800Z 36.5052 -99.0832 13km NE of Mooreland, Oklahoma 6.954 3 ml 2014-10-17T08:49:37.800Z 36.5042 -99.0668 14km ENE of Mooreland, Oklahoma 7.754 3.1 ml 2014-10-15T12:33:39.300Z 36.3337 -97.5823 26km W of Perry, Oklahoma 5 3 ml Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 38 of 52
Preparer: D. Horne; Date: 02/15/21 Table 2 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Historical Earthquakes in Oklahoma Greater than 3.0 Magnitude (As of February 9, 2021)
Date and Time Latitude Longitude Epicenter Depth (km) Magnitude Mag. Type1 2014-10-15T09:51:16.200Z 36.5032 -99.0519 15km ENE of Mooreland, Oklahoma 7.859 3.5 ml 2014-10-14T18:28:32.100Z 36.3507 -97.0931 18km ENE of Perry, Oklahoma 4.531 3.1 ml 2014-10-14T06:26:18.800Z 36.6573 -97.9028 22km SW of Medford, Oklahoma 2.337 3.3 ml 2014-10-14T05:06:01.300Z 35.813 -97.4106 7km S of Guthrie, Oklahoma 3.158 3.1 ml 2014-10-14T04:55:44.800Z 36.5189 -98.4728 18km W of Helena, Oklahoma 3.502 3.3 ml 2014-10-14T01:18:06.800Z 35.4777 -97.3543 3km WSW of Nicoma Park, Oklahoma 6.238 3 ml 2014-10-13T16:03:11.590Z 36.82 -97.718 2km NE of Medford, Oklahoma 3.4 3 ml 2014-10-13T12:24:54.200Z 35.7341 -97.5254 9km NNW of Edmond, Oklahoma 5 3.2 mwr 2014-10-13T08:58:19.500Z 36.6512 -97.9235 24km SW of Medford, Oklahoma 5 3.1 ml 2014-10-13T01:44:30.100Z 36.2869 -96.9192 11km WSW of Pawnee, Oklahoma 7.708 3.2 ml 2014-10-12T19:40:43.000Z 36.6702 -98.3018 10km SSE of Cherokee, Oklahoma 3.506 3 ml 2014-10-12T16:03:25.840Z 37.2385 -97.9767 6km SE of Harper, Kansas 8.02 3.2 mb_lg 2014-10-10T17:26:20.500Z 35.7476 -97.1228 11km NE of Luther, Oklahoma 3.562 3.1 ml 2014-10-10T16:18:24.700Z 35.7503 -97.1212 11km NE of Luther, Oklahoma 3.267 3.2 mwr 2014-10-10T13:51:21.000Z 35.9466 -96.7594 4km S of Cushing, Oklahoma 5 4.2 mwr 2014-10-10T07:38:35.400Z 35.8181 -97.4177 6km S of Guthrie, Oklahoma 4.687 3 ml 2014-10-10T04:58:51.090Z 37.009 -97.976 16km SSE of Anthony, Kansas 5.5 3.2 mb_lg 2014-10-08T19:44:12.600Z 36.1773 -97.2558 12km SSE of Perry, Oklahoma 5.222 3.3 mwr 2014-10-08T01:48:28.000Z 35.7505 -97.1204 11km NE of Luther, Oklahoma 4.566 3.2 mwr 2014-10-07T23:57:39.400Z 35.944 -96.779 4km SSW of Cushing, Oklahoma 3.342 3 ml 2014-10-07T16:51:13.100Z 35.9474 -96.7642 4km S of Cushing, Oklahoma 5.28 4 mwr 2014-10-07T12:03:52.700Z 36.3156 -97.0331 20km W of Pawnee, Oklahoma 7.933 3.1 ml 2014-10-05T10:24:50.900Z 35.8171 -97.422 6km S of Guthrie, Oklahoma 4.776 3 ml 2014-10-05T01:10:31.600Z 36.6154 -98.3578 10km NW of Helena, Oklahoma 5.674 3.2 ml 2014-10-04T20:23:08.900Z 36.8451 -97.8812 13km WNW of Medford, Oklahoma 5.711 3.1 ml 2014-10-04T14:11:24.400Z 36.3083 -96.9706 15km WSW of Pawnee, Oklahoma 5 3 ml 2014-10-03T00:19:11.200Z 36.8499 -97.8521 11km WNW of Medford, Oklahoma 4.152 3.1 ml 2014-10-02T22:50:48.990Z 37.2431 -97.9651 7km SE of Harper, Kansas 5 3.1 mb_lg 2014-10-02T18:35:43.080Z 37.2397 -97.9766 6km SE of Harper, Kansas 5 3.4 mb_lg 2014-10-02T18:03:43.490Z 37.2324 -97.9748 7km SE of Harper, Kansas 5 3.1 mwr 2014-10-02T18:02:55.350Z 37.2332 -97.9668 7km SE of Harper, Kansas 5 3.5 mwr 2014-10-02T18:01:24.400Z 37.2447 -97.9553 7km SE of Harper, Kansas 5 4.3 mwr 2014-10-01T22:15:01.200Z 35.8158 -97.4202 7km S of Guthrie, Oklahoma 4.556 3 ml 2014-10-01T19:24:16.000Z 36.8599 -97.861 12km WNW of Medford, Oklahoma 4.493 3 ml 2014-10-01T18:18:55.300Z 36.7654 -97.9862 23km WSW of Medford, Oklahoma 5 3.6 ml 2014-10-01T06:11:05.130Z 37.2592 -97.9429 7km ESE of Harper, Kansas 5 3.3 mb_lg 2014-10-01T00:33:29.260Z 37.3919 -95.3825 12km WNW of Parsons, Kansas 9.22 3 mb_lg 2014-09-30T22:12:10.400Z 35.5909 -97.3945 7km NNW of Spencer, Oklahoma 6.518 3 ml 2014-09-30T16:47:57.840Z 37.2469 -97.984 5km SE of Harper, Kansas 5 3.1 mb_lg 2014-09-30T15:24:31.240Z 37.2491 -97.9718 6km SE of Harper, Kansas 5 3.1 mb_lg 2014-09-30T14:55:04.650Z 37.2212 -97.9626 9km NE of Anthony, Kansas 3.22 3.8 mwr 2014-09-30T12:30:25.910Z 37.2481 -97.9352 9km ESE of Harper, Kansas 5 3.3 mb_lg 2014-09-30T06:21:59.800Z 36.1727 -97.2471 13km SSE of Perry, Oklahoma 4.141 3 ml 2014-09-30T06:06:01.100Z 36.2142 -97.5356 23km WSW of Perry, Oklahoma 3.953 3.2 mwr 2014-09-30T05:35:36.800Z 36.2093 -97.5363 24km WSW of Perry, Oklahoma 5 3 ml 2014-09-30T03:01:25.900Z 36.2237 -97.5535 24km WSW of Perry, Oklahoma 2.2 4 mwr 2014-09-29T14:43:39.500Z 36.0776 -97.23 14km N of Langston, Oklahoma 3.999 3.1 ml 2014-09-28T02:26:03.000Z 36.3908 -97.152 16km NE of Perry, Oklahoma 5 3.2 ml 2014-09-27T12:29:20.100Z 35.8264 -97.4327 5km S of Guthrie, Oklahoma 4.442 3.1 ml 2014-09-27T12:14:49.100Z 35.82 -97.4318 6km S of Guthrie, Oklahoma 5 3.4 mwr 2014-09-26T13:27:38.500Z 36.3028 -96.9742 15km WSW of Pawnee, Oklahoma 5 3.2 ml 2014-09-24T05:49:33.700Z 36.4035 -96.7616 8km NNE of Pawnee, Oklahoma 5.417 3.5 mwr 2014-09-23T13:37:10.900Z 34.6213 -97.556 24km S of Lindsay, Oklahoma 5 3 ml 2014-09-23T10:34:00.900Z 35.8184 -97.4203 6km S of Guthrie, Oklahoma 5 3 ml 2014-09-23T07:58:02.800Z 35.4467 -96.5259 6km SW of Boley, Oklahoma 3.893 3.3 ml 2014-09-22T19:28:34.700Z 34.6292 -97.5457 23km SSE of Lindsay, Oklahoma 5 3.6 ml 2014-09-21T00:36:12.100Z 35.8207 -97.4231 6km S of Guthrie, Oklahoma 4.772 3.1 ml 2014-09-20T07:10:18.800Z 36.822 -97.7235 1km NNE of Medford, Oklahoma 3.693 3 ml 2014-09-19T17:23:17.800Z 35.8185 -97.4199 6km S of Guthrie, Oklahoma 4.281 3.6 mwr 2014-09-19T10:55:21.000Z 36.8209 -97.7187 2km NE of Medford, Oklahoma 4.408 3 ml 2014-09-19T05:08:02.900Z 36.1779 -97.2593 12km SSE of Perry, Oklahoma 5 3.3 ml 2014-09-19T01:34:34.600Z 36.6022 -97.6084 25km SSE of Medford, Oklahoma 5.26 3.3 ml 2014-09-19T01:31:53.500Z 36.6028 -97.6131 25km SSE of Medford, Oklahoma 4.564 3.8 mwr Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 39 of 52
Preparer: D. Horne; Date: 02/15/21 Table 2 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Historical Earthquakes in Oklahoma Greater than 3.0 Magnitude (As of February 9, 2021)
Date and Time Latitude Longitude Epicenter Depth (km) Magnitude Mag. Type1 2014-09-19T00:08:03.200Z 35.818 -97.4225 6km S of Guthrie, Oklahoma 4.488 3 ml 2014-09-18T19:52:32.000Z 36.2725 -97.2529 3km ESE of Perry, Oklahoma 3.288 3.2 ml 2014-09-18T07:12:40.400Z 36.1813 -97.2693 12km S of Perry, Oklahoma 5.214 3.8 mwr 2014-09-17T13:21:54.600Z 36.1783 -97.2639 12km S of Perry, Oklahoma 3.334 3.3 mwr 2014-09-17T12:02:55.100Z 36.1468 -96.8081 10km WNW of Yale, Oklahoma 7.48 3.2 ml 2014-09-17T11:58:26.100Z 36.1479 -96.8049 10km WNW of Yale, Oklahoma 7.234 3 ml 2014-09-17T11:09:05.200Z 36.846 -97.8781 13km WNW of Medford, Oklahoma 5.581 3.2 ml 2014-09-16T22:35:03.900Z 36.8204 -97.715 2km NE of Medford, Oklahoma 4.238 3.2 ml 2014-09-16T06:16:30.400Z 35.8204 -97.4227 6km S of Guthrie, Oklahoma 4.452 3 ml 2014-09-15T20:14:12.500Z 35.8203 -97.4257 6km S of Guthrie, Oklahoma 4.966 3.2 ml 2014-09-15T20:08:03.300Z 35.8141 -97.4275 7km S of Guthrie, Oklahoma 4.82 3.9 mwr 2014-09-15T13:27:40.100Z 36.6337 -97.9813 27km NNW of Enid, Oklahoma 4.009 3.1 ml 2014-09-15T09:21:22.400Z 36.8405 -98.2455 13km NE of Cherokee, Oklahoma 3.551 3.1 ml 2014-09-15T00:11:16.500Z 35.8164 -97.4177 6km S of Guthrie, Oklahoma 4.324 3.1 ml 2014-09-14T12:01:02.500Z 36.6289 -97.9818 27km NNW of Enid, Oklahoma 5 3.5 mwr 2014-09-14T04:10:05.100Z 36.1785 -97.2678 12km S of Perry, Oklahoma 5.267 3.3 ml 2014-09-13T20:01:07.600Z 36.1963 -97.4148 15km SW of Perry, Oklahoma 5 3 ml 2014-09-13T16:58:10.100Z 36.2223 -97.5547 25km WSW of Perry, Oklahoma 3.186 3.2 ml 2014-09-13T08:22:30.600Z 36.6233 -97.6933 20km S of Medford, Oklahoma 4.68 3.4 ml 2014-09-12T14:41:55.900Z 36.1839 -97.2705 11km S of Perry, Oklahoma 3.746 3.7 mwr 2014-09-10T00:11:42.700Z 36.9682 -97.7852 17km WSW of Caldwell, Kansas 7.509 3.3 ml 2014-09-09T19:49:28.000Z 36.1783 -96.9684 10km NE of Stillwater, Oklahoma 5.993 3 ml 2014-09-09T10:06:44.100Z 36.217 -97.3944 12km SW of Perry, Oklahoma 11.684 3 ml 2014-09-09T09:06:46.500Z 36.1976 -97.4119 15km SW of Perry, Oklahoma 5 3.4 mwr 2014-09-08T21:02:14.900Z 36.8539 -97.8867 14km WNW of Medford, Oklahoma 6.175 3.5 ml 2014-09-08T18:04:22.500Z 36.8141 -97.7236 1km NE of Medford, Oklahoma 3.021 3.6 ml 2014-09-08T16:21:34.000Z 36.821 -97.7216 1km NE of Medford, Oklahoma 5 3.9 mwr 2014-09-08T15:23:30.570Z 37.305 -97.6059 10km SSE of Conway Springs, Kansas 5.4 3.2 mb_lg 2014-09-08T12:56:52.900Z 37.2625 -97.6346 14km S of Conway Springs, Kansas 5 3.4 mwr 2014-09-08T01:52:57.600Z 36.82 -97.7158 2km NE of Medford, Oklahoma 4.742 3.1 ml 2014-09-06T18:53:59.100Z 36.6357 -97.7 19km S of Medford, Oklahoma 5 3.4 mwr 2014-09-04T23:32:05.600Z 36.1983 -97.4191 15km SW of Perry, Oklahoma 5 3.3 mwr 2014-09-04T23:02:42.200Z 36.1973 -97.4039 14km SW of Perry, Oklahoma 3.702 3 ml 2014-09-04T11:41:20.400Z 36.5792 -97.6055 27km SSE of Medford, Oklahoma 5 3.4 ml 2014-09-02T08:05:10.300Z 36.5191 -98.4726 18km W of Helena, Oklahoma 4.12 3.4 ml 2014-09-02T04:58:06.600Z 36.7184 -97.9189 19km WSW of Medford, Oklahoma 13.438 3.3 ml 2014-09-01T18:31:06.300Z 36.7266 -97.9132 18km WSW of Medford, Oklahoma 5 3.2 ml 2014-09-01T17:36:12.600Z 36.9043 -97.7616 11km NNW of Medford, Oklahoma 5 3 ml 2014-09-01T11:46:49.200Z 36.1954 -97.4061 14km SW of Perry, Oklahoma 3.956 3 ml 2014-08-31T22:04:51.800Z 35.5875 -97.3212 3km NW of Jones, Oklahoma 5.289 3.1 ml 2014-08-31T18:49:01.400Z 35.5881 -97.3216 3km NW of Jones, Oklahoma 4.861 3.2 ml 2014-08-31T16:57:17.000Z 36.625 -97.9865 26km ENE of Helena, Oklahoma 4.917 3.4 ml 2014-08-31T07:20:19.800Z 36.6189 -97.9985 25km ENE of Helena, Oklahoma 5.217 3.4 mwr 2014-08-29T15:39:25.300Z 35.8189 -97.4313 6km S of Guthrie, Oklahoma 3.61 3.2 ml 2014-08-29T09:52:13.500Z 36.2212 -97.5554 25km WSW of Perry, Oklahoma 3.488 3 ml 2014-08-29T03:01:27.060Z 36.254 -97.4547 15km WSW of Perry, Oklahoma 4.74 3.1 mb_lg 2014-08-27T15:44:24.800Z 36.0942 -97.2286 15km W of Stillwater, Oklahoma 4.814 3.2 ml 2014-08-27T10:36:00.060Z 35.94 -96.8084 6km SW of Cushing, Oklahoma 2.49 3 mb_lg 2014-08-26T16:05:10.000Z 35.8168 -97.4346 6km S of Guthrie, Oklahoma 5 3.1 mwr 2014-08-25T21:41:07.300Z 36.1175 -97.3161 19km S of Perry, Oklahoma 5.084 3.3 ml 2014-08-25T00:10:05.040Z 37.3657 -98.1573 14km NW of Harper, Kansas 7.67 3 mb_lg 2014-08-23T11:22:12.800Z 36.7201 -97.9197 19km WSW of Medford, Oklahoma 5 3.3 ml 2014-08-23T11:06:34.000Z 35.8135 -97.4358 7km S of Guthrie, Oklahoma 5.243 3 mwr 2014-08-22T19:23:10.600Z 36.8594 -98.2553 14km NE of Cherokee, Oklahoma 3.362 3.1 ml 2014-08-20T16:33:58.840Z 37.2456 -97.9612 7km SE of Harper, Kansas 6.7 3.1 mb_lg 2014-08-20T12:38:06.200Z 35.8829 -97.2688 7km S of Langston, Oklahoma 5 3 ml 2014-08-20T12:27:40.200Z 36.8571 -97.8673 13km WNW of Medford, Oklahoma 5 3 ml 2014-08-20T11:31:59.300Z 35.886 -97.2634 6km S of Langston, Oklahoma 4.887 3.3 ml 2014-08-20T11:01:39.400Z 35.8832 -97.2625 6km S of Langston, Oklahoma 4.463 3.1 ml 2014-08-19T12:41:35.700Z 35.7727 -97.4677 12km SSW of Guthrie, Oklahoma 4.51 4.4 mwr 2014-08-18T19:14:24.300Z 36.6317 -98.188 12km NE of Helena, Oklahoma 5 3.4 ml 2014-08-18T02:50:09.200Z 35.372 -96.487 13km S of Boley, Oklahoma 5 3.5 mwr 2014-08-18T01:25:57.400Z 36.8395 -98.2541 13km NE of Cherokee, Oklahoma 3 3.7 mwr Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 40 of 52
Preparer: D. Horne; Date: 02/15/21 Table 2 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Historical Earthquakes in Oklahoma Greater than 3.0 Magnitude (As of February 9, 2021)
Date and Time Latitude Longitude Epicenter Depth (km) Magnitude Mag. Type1 2014-08-17T16:35:07.700Z 36.8527 -97.8712 13km WNW of Medford, Oklahoma 4.808 3.1 ml 2014-08-17T15:59:05.600Z 36.8584 -97.8714 13km WNW of Medford, Oklahoma 5 3.1 mwr 2014-08-17T06:31:10.300Z 36.8516 -97.8693 13km WNW of Medford, Oklahoma 5 3.2 mwr 2014-08-17T06:18:43.200Z 36.8605 -97.873 13km WNW of Medford, Oklahoma 5.009 3.4 mwr 2014-08-16T10:54:24.800Z 36.8611 -97.8714 13km WNW of Medford, Oklahoma 6.097 3.4 ml 2014-08-14T14:15:31.600Z 35.8614 -97.3225 9km ESE of Guthrie, Oklahoma 5.117 3.2 ml 2014-08-13T15:44:28.100Z 36.6268 -97.685 20km SSE of Medford, Oklahoma 5.645 3.3 ml 2014-08-12T12:34:19.100Z 36.044 -97.514 12km NE of Crescent, Oklahoma 5 3 ml 2014-08-10T22:29:04.280Z 36.2885 -97.1224 14km E of Perry, Oklahoma 5 3.3 ml 2014-08-10T14:54:27.280Z 36.859 -97.863 12km WNW of Medford, Oklahoma 5 3.3 ml 2014-08-08T20:58:40.100Z 35.8156 -97.4221 7km S of Guthrie, Oklahoma 3.815 3 ml 2014-08-08T20:45:37.800Z 35.8142 -97.4172 7km S of Guthrie, Oklahoma 4.161 3 ml 2014-08-08T20:21:56.800Z 35.8158 -97.4201 7km S of Guthrie, Oklahoma 3.897 3.3 mwr 2014-08-08T18:07:48.100Z 35.82 -97.429 6km S of Guthrie, Oklahoma 5 3.3 ml 2014-08-07T16:39:21.400Z 36.8175 -97.9961 23km W of Medford, Oklahoma 5.393 3.2 ml 2014-08-07T16:03:44.400Z 35.5776 -97.277 1km NE of Jones, Oklahoma 5.313 3 ml 2014-08-06T16:06:44.690Z 36.581 -97.606 27km SSE of Medford, Oklahoma 5 3 ml 2014-08-05T17:09:56.890Z 36.818 -97.989 22km W of Medford, Oklahoma 4.2 3.3 ml 2014-08-04T18:23:01.500Z 35.5977 -97.4066 8km SE of Edmond, Oklahoma 6.39 3.2 mwr 2014-08-04T15:30:42.760Z 35.815 -97.42 7km S of Guthrie, Oklahoma 3.7 3.3 mwr 2014-08-03T17:11:06.100Z 35.614 -96.9408 11km SSW of Chandler, Oklahoma 5.595 3.1 ml 2014-08-03T12:21:26.600Z 35.8178 -97.4241 6km S of Guthrie, Oklahoma 3.775 3 ml 2014-08-03T04:57:57.600Z 35.772 -97.477 12km SSW of Guthrie, Oklahoma 6.7 3.2 ml 2014-08-02T01:44:30.400Z 36.773 -98.069 25km E of Cherokee, Oklahoma 5.8 3.1 ml 2014-08-01T14:44:27.700Z 36.7621 -98.0439 27km E of Cherokee, Oklahoma 11.68 3.2 mwr 2014-08-01T14:19:21.100Z 36.7498 -98.0449 27km E of Cherokee, Oklahoma 4.6 3.1 mwr 2014-07-31T23:28:20.000Z 36.5823 -97.6107 27km SSE of Medford, Oklahoma 5.287 3.2 ml 2014-07-31T06:09:30.700Z 36.3006 -97.543 22km W of Perry, Oklahoma 4.996 3.2 ml 2014-07-30T23:48:03.300Z 35.7185 -97.432 8km NNE of Edmond, Oklahoma 5 3.2 ml 2014-07-30T16:46:59.080Z 35.718 -97.426 8km NNE of Edmond, Oklahoma 5 3.3 ml 2014-07-30T16:21:32.940Z 35.719 -97.427 8km NNE of Edmond, Oklahoma 5.1 3.3 mwr 2014-07-29T02:46:36.000Z 36.7561 -98.0453 27km E of Cherokee, Oklahoma 5.287 4.3 mwr 2014-07-28T22:26:50.800Z 36.7469 -98.408 4km W of Cherokee, Oklahoma 4.76 3.3 ml 2014-07-28T15:08:04.220Z 36.747 -98.406 4km W of Cherokee, Oklahoma 4.2 3 ml 2014-07-27T22:19:20.000Z 36.144 -96.809 10km WNW of Yale, Oklahoma 0.046 3.2 ml 2014-07-26T10:57:10.970Z 37.1081 -97.7961 18km WNW of Caldwell, Kansas 3.12 3.4 mb_lg 2014-07-25T04:56:51.600Z 36.662 -98.28 12km SSE of Cherokee, Oklahoma 0.7 3.4 mwr 2014-07-23T05:58:13.200Z 35.8779 -97.3059 8km SSW of Langston, Oklahoma 4.988 3.1 ml 2014-07-23T02:02:26.400Z 35.8782 -97.3091 8km SSW of Langston, Oklahoma 5.264 3.3 mwr 2014-07-20T12:24:58.230Z 37.3394 -98.0905 8km NW of Harper, Kansas 6.15 3.3 mb_lg 2014-07-20T00:24:58.390Z 37.2344 -97.9489 8km SE of Harper, Kansas 5.58 3 mb_lg 2014-07-18T13:41:13.000Z 36.675 -98.2098 15km SE of Cherokee, Oklahoma 5 3.3 ml 2014-07-18T01:37:28.000Z 36.121 -97.3193 18km S of Perry, Oklahoma 4.963 3 ml 2014-07-17T10:40:43.190Z 37.1223 -97.7918 19km WNW of Caldwell, Kansas 5 3.6 mb_lg 2014-07-15T10:47:53.900Z 36.7496 -97.7474 6km S of Medford, Oklahoma 4.844 3 ml 2014-07-15T09:08:40.900Z 35.5243 -97.1588 3km N of Harrah, Oklahoma 6.653 3.9 mwr 2014-07-15T07:19:17.300Z 35.524 -97.1543 3km NNE of Harrah, Oklahoma 6.546 3.5 mwr 2014-07-14T16:50:14.400Z 35.8721 -97.3092 9km SSW of Langston, Oklahoma 5.117 3.3 mwr 2014-07-14T07:15:51.100Z 36.713 -97.888 17km SW of Medford, Oklahoma 5 3.9 mwr 2014-07-13T14:51:02.200Z 35.8588 -97.3237 9km ESE of Guthrie, Oklahoma 4.825 3 ml 2014-07-12T17:34:27.600Z 35.858 -97.3253 9km ESE of Guthrie, Oklahoma 4.997 3.1 ml 2014-07-12T17:11:46.700Z 35.8637 -97.321 9km E of Guthrie, Oklahoma 4.047 4 mwr 2014-07-12T11:27:26.400Z 35.8628 -97.3124 10km E of Guthrie, Oklahoma 5 3.2 ml 2014-07-11T12:17:05.500Z 36.56 -97.8367 18km NNE of Enid, Oklahoma 6.398 3.4 ml 2014-07-09T02:10:04.440Z 37.1046 -97.7864 17km WNW of Caldwell, Kansas 3.43 3 mwr 2014-07-07T14:38:21.500Z 34.0713 -97.468 10km SSW of Wilson, Oklahoma 7.727 3.2 ml 2014-07-07T07:44:13.900Z 36.6773 -98.2108 15km ESE of Cherokee, Oklahoma 3.615 3.2 ml 2014-07-07T06:53:06.300Z 36.7575 -98.0487 27km E of Cherokee, Oklahoma 6.034 3 ml 2014-07-06T15:22:05.600Z 36.7273 -97.893 16km WSW of Medford, Oklahoma 5 3.1 ml 2014-07-06T04:10:46.100Z 36.7497 -97.7497 6km SSW of Medford, Oklahoma 4.821 3.3 ml 2014-07-06T01:44:18.700Z 36.2157 -97.5417 24km WSW of Perry, Oklahoma 4.925 3.3 ml 2014-07-04T20:48:01.900Z 36.7233 -97.9285 19km WSW of Medford, Oklahoma 5 3 ml 2014-07-04T04:55:09.700Z 36.894 -97.3706 12km NW of Blackwell, Oklahoma 7.049 3.2 ml Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 41 of 52
Preparer: D. Horne; Date: 02/15/21 Table 2 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Historical Earthquakes in Oklahoma Greater than 3.0 Magnitude (As of February 9, 2021)
Date and Time Latitude Longitude Epicenter Depth (km) Magnitude Mag. Type1 2014-07-03T20:24:20.000Z 36.7602 -98.0515 27km E of Cherokee, Oklahoma 3.975 3 ml 2014-07-03T20:14:54.300Z 35.9358 -97.0745 5km SW of Perkins, Oklahoma 4.656 3.2 ml 2014-07-03T16:09:03.400Z 36.3842 -96.9309 12km WNW of Pawnee, Oklahoma 5 3 ml 2014-07-03T14:43:41.600Z 36.7556 -98.0476 27km E of Cherokee, Oklahoma 5 3.1 ml 2014-07-01T14:22:07.200Z 36.5831 -97.8189 21km NNE of Enid, Oklahoma 5 3.1 ml 2014-07-01T08:20:34.500Z 36.6507 -97.9586 26km SW of Medford, Oklahoma 5 3.2 ml 2014-07-01T07:42:52.800Z 35.8247 -97.0749 16km SSW of Perkins, Oklahoma 5.643 3 ml 2014-06-30T11:03:51.600Z 35.8858 -97.2658 6km S of Langston, Oklahoma 4.511 3.2 ml 2014-06-30T01:30:44.300Z 36.8531 -97.8543 11km WNW of Medford, Oklahoma 4.476 3 ml 2014-06-29T16:29:47.700Z 35.5958 -97.4041 8km NNW of Spencer, Oklahoma 5.501 3 ml 2014-06-28T06:08:44.700Z 36.6833 -98.2613 11km SE of Cherokee, Oklahoma 4.962 3 ml 2014-06-27T22:35:04.800Z 36.7186 -97.9033 18km WSW of Medford, Oklahoma 6.063 3.7 mwr 2014-06-27T20:18:34.700Z 36.5649 -97.8371 19km N of Enid, Oklahoma 5 3.1 ml 2014-06-27T15:09:02.800Z 35.8856 -97.3103 8km SW of Langston, Oklahoma 5 3.6 mwr 2014-06-27T12:36:57.600Z 35.8856 -97.3125 8km SW of Langston, Oklahoma 5.472 3.3 ml 2014-06-27T07:10:46.200Z 35.8839 -97.2608 6km S of Langston, Oklahoma 4.761 3.5 ml 2014-06-26T23:28:03.400Z 35.8863 -97.2626 6km S of Langston, Oklahoma 5 3.7 mwr 2014-06-26T14:02:50.200Z 36.8682 -97.6881 7km NNE of Medford, Oklahoma 1.593 3.2 mwr 2014-06-26T07:57:16.200Z 36.7578 -98.0499 27km E of Cherokee, Oklahoma 5.716 3 ml 2014-06-26T07:45:55.500Z 36.755 -98.0469 27km E of Cherokee, Oklahoma 5.768 3.2 ml 2014-06-26T06:13:30.100Z 35.7749 -97.4912 12km SSW of Guthrie, Oklahoma 6.166 3.3 mwr 2014-06-26T05:41:27.200Z 35.7674 -97.4762 12km N of Edmond, Oklahoma 6.414 3.1 ml 2014-06-26T05:38:57.100Z 35.7683 -97.4845 12km N of Edmond, Oklahoma 6.301 3.5 mwr 2014-06-26T05:26:44.900Z 35.7716 -97.491 13km N of Edmond, Oklahoma 6.584 3.6 mwr 2014-06-25T13:09:45.300Z 36.6384 -98.1073 17km NE of Helena, Oklahoma 5.716 3.3 ml 2014-06-24T17:38:10.300Z 36.871 -97.694 7km NNE of Medford, Oklahoma 5 3 ml 2014-06-24T16:57:30.700Z 36.884 -97.3773 12km NW of Blackwell, Oklahoma 6.14 3.2 ml 2014-06-24T14:15:56.400Z 36.5993 -97.6136 25km SSE of Medford, Oklahoma 5.574 3 ml 2014-06-23T13:44:59.400Z 36.8512 -97.856 11km WNW of Medford, Oklahoma 5.627 3.4 mwr 2014-06-23T09:48:01.000Z 36.8534 -97.8595 12km WNW of Medford, Oklahoma 6.102 3.3 ml 2014-06-23T07:42:06.100Z 35.7739 -97.4785 12km SSW of Guthrie, Oklahoma 5.386 3.2 ml 2014-06-21T01:57:14.000Z 36.7197 -97.8843 16km SW of Medford, Oklahoma 5 3 ml 2014-06-20T23:10:55.900Z 36.7256 -97.903 17km WSW of Medford, Oklahoma 5 3.9 mwr 2014-06-20T14:46:18.500Z 35.975 -97.1779 7km ENE of Langston, Oklahoma 6.489 3.3 mwr 2014-06-20T12:46:48.200Z 35.5994 -97.4093 8km SE of Edmond, Oklahoma 4.67 3.1 ml 2014-06-18T19:44:41.600Z 35.9756 -97.1794 7km ENE of Langston, Oklahoma 5.627 3.2 ml 2014-06-18T19:11:33.000Z 36.723 -97.9006 17km WSW of Medford, Oklahoma 4.583 3.6 ml 2014-06-18T18:42:26.100Z 35.9772 -97.1898 Oklahoma 5 3.2 ml 2014-06-18T17:44:40.100Z 36.721 -97.8958 17km WSW of Medford, Oklahoma 4.087 3 ml 2014-06-18T17:26:33.200Z 35.9774 -97.1813 7km ENE of Langston, Oklahoma 5 3.1 ml 2014-06-18T14:08:33.800Z 35.9758 -97.1758 7km ENE of Langston, Oklahoma 5.964 3.2 mwr 2014-06-18T10:53:02.400Z 35.5956 -97.3924 8km N of Spencer, Oklahoma 5 4.1 mwr 2014-06-18T10:30:18.700Z 35.5974 -97.4001 8km NNW of Spencer, Oklahoma 5.315 3 ml 2014-06-18T07:08:01.300Z 35.9772 -97.1835 7km ENE of Langston, Oklahoma 5.569 3.4 ml 2014-06-17T16:29:12.600Z 35.5908 -97.374 7km N of Spencer, Oklahoma 5.053 3 ml 2014-06-16T11:25:12.700Z 35.5866 -97.3804 7km N of Spencer, Oklahoma 6.536 3.3 ml 2014-06-16T10:47:35.600Z 35.5935 -97.3969 8km NNW of Spencer, Oklahoma 5 4.3 mwr 2014-06-16T10:31:07.400Z 35.5925 -97.4027 8km NNW of Spencer, Oklahoma 6.67 3.5 mwr 2014-06-15T17:33:01.600Z 36.8326 -97.6391 8km ENE of Medford, Oklahoma 1.891 3 ml 2014-06-15T13:51:25.900Z 36.8663 -97.8567 12km WNW of Medford, Oklahoma 5.259 3 ml 2014-06-14T22:55:07.900Z 36.6037 -97.6234 24km SSE of Medford, Oklahoma 5 3.3 ml 2014-06-11T09:42:29.600Z 36.9293 -97.6495 12km SSW of Caldwell, Kansas 9.121 3 ml 2014-06-10T15:13:51.000Z 35.7155 -97.4288 8km NNE of Edmond, Oklahoma 5.322 3.1 ml 2014-06-10T07:19:55.000Z 35.7168 -97.4282 8km NNE of Edmond, Oklahoma 5 3.1 ml 2014-06-02T23:08:02.900Z 35.7188 -97.4244 8km NNE of Edmond, Oklahoma 5.301 3.1 ml 2014-06-02T22:35:20.900Z 35.7182 -97.4267 8km NNE of Edmond, Oklahoma 5.262 3.2 ml 2014-06-02T17:38:54.700Z 35.4943 -97.2576 1km ESE of Choctaw, Oklahoma 5.97 3.2 ml 2014-06-01T19:54:18.300Z 35.5032 -97.2361 3km ENE of Choctaw, Oklahoma 5 3.6 mwr 2014-06-01T05:50:09.100Z 35.4185 -96.5057 8km SSW of Boley, Oklahoma 5 3.1 ml 2014-05-31T10:18:06.400Z 35.4929 -97.2515 1km ESE of Choctaw, Oklahoma 7.087 3.7 mwr 2014-05-30T22:44:56.700Z 36.4797 -97.9665 12km NW of Enid, Oklahoma 4.487 3.1 ml 2014-05-30T21:42:02.200Z 36.6009 -98.3799 11km WNW of Helena, Oklahoma 6.447 3.3 mwr 2014-05-30T14:32:16.100Z 36.8131 -97.7597 2km WNW of Medford, Oklahoma 3.187 3.4 ml Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 42 of 52
Preparer: D. Horne; Date: 02/15/21 Table 2 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Historical Earthquakes in Oklahoma Greater than 3.0 Magnitude (As of February 9, 2021)
Date and Time Latitude Longitude Epicenter Depth (km) Magnitude Mag. Type1 2014-05-25T09:10:34.900Z 36.7981 -97.6673 6km E of Medford, Oklahoma 5 3 ml 2014-05-22T02:46:10.300Z 35.7777 -97.4679 11km SSW of Guthrie, Oklahoma 5.755 3.5 mwr 2014-05-21T23:19:07.740Z 35.9048 -97.2834 5km SSW of Langston, Oklahoma 7.35 3 mb_lg 2014-05-20T13:59:28.200Z 35.4984 -97.2409 2km E of Choctaw, Oklahoma 6.884 3.1 ml 2014-05-20T07:30:18.800Z 35.4902 -97.2458 2km ESE of Choctaw, Oklahoma 7.482 3.4 mwr 2014-05-20T05:42:38.600Z 35.4815 -97.2476 2km SE of Choctaw, Oklahoma 7.552 3.3 ml 2014-05-20T03:58:31.900Z 35.4855 -97.2545 1km SE of Choctaw, Oklahoma 7.538 3.2 ml 2014-05-19T06:29:08.400Z 36.0915 -97.0687 2km SSW of Stillwater, Oklahoma 4.02 3 ml 2014-05-19T04:16:03.600Z 36.1096 -97.445 22km NE of Crescent, Oklahoma 6.299 3.2 ml 2014-05-18T18:53:47.000Z 36.5923 -97.7994 22km NNE of Enid, Oklahoma 5 3 ml 2014-05-18T08:29:25.800Z 35.808 -96.9371 12km NNW of Chandler, Oklahoma 5 3.2 ml 2014-05-17T20:54:31.400Z 36.0946 -97.0702 2km SSW of Stillwater, Oklahoma 2.555 3.2 ml 2014-05-17T10:47:05.300Z 36.2794 -97.2612 2km ESE of Perry, Oklahoma 5 3.1 ml 2014-05-16T20:00:00.700Z 36.161 -96.8595 15km WNW of Yale, Oklahoma 8.104 3.1 ml 2014-05-16T03:35:07.000Z 34.429 -96.3119 14km SW of Coalgate, Oklahoma 5 3 ml 2014-05-15T20:23:21.300Z 35.7762 -97.4786 12km SSW of Guthrie, Oklahoma 6.907 3.4 mwr 2014-05-15T00:28:52.700Z 36.7981 -97.6599 7km ESE of Medford, Oklahoma 3.415 3.3 ml 2014-05-14T16:06:26.300Z 36.8762 -97.6651 9km NE of Medford, Oklahoma 5 3.1 ml 2014-05-13T21:39:11.700Z 36.1386 -96.8939 15km E of Stillwater, Oklahoma 5 3.3 ml 2014-05-12T00:13:03.600Z 36.309 -96.6745 8km S of Pawnee, Oklahoma 5.42 3 ml 2014-05-11T19:29:34.500Z 36.9073 -97.6624 12km NNE of Medford, Oklahoma 5 3 ml 2014-05-11T07:50:50.400Z 36.5831 -97.6101 27km SSE of Medford, Oklahoma 5.834 3 ml 2014-05-09T18:52:47.000Z 36.5833 -97.618 26km SSE of Medford, Oklahoma 3.998 3.9 mwr 2014-05-08T20:40:32.800Z 36.5773 -97.6271 27km SSE of Medford, Oklahoma 5 3.5 mwr 2014-05-08T15:08:57.000Z 36.4531 -97.0432 24km WNW of Pawnee, Oklahoma 4.768 3 ml 2014-05-08T04:32:45.300Z 36.6307 -97.828 21km SSW of Medford, Oklahoma 5.017 3.2 ml 2014-05-07T18:57:02.700Z 36.3905 -97.1517 16km NE of Perry, Oklahoma 2.49 3.2 ml 2014-05-06T06:08:10.400Z 35.9039 -97.2645 4km S of Langston, Oklahoma 4.776 3.2 ml 2014-05-03T09:39:07.700Z 36.6039 -97.8367 23km N of Enid, Oklahoma 5 3.6 ml 2014-05-02T19:44:20.500Z 35.5903 -97.3994 7km NNW of Spencer, Oklahoma 5.534 3.2 mwr 2014-05-02T10:29:20.400Z 35.876 -97.2988 8km SSW of Langston, Oklahoma 6.351 3 ml 2014-05-02T05:46:03.200Z 36.0768 -97.5536 14km NNE of Crescent, Oklahoma 4.67 3.2 ml 2014-05-01T19:07:30.500Z 36.2757 -97.2521 3km ESE of Perry, Oklahoma 4.131 3.1 ml 2014-05-01T10:04:07.900Z 35.8112 -96.9361 13km NNW of Chandler, Oklahoma 4.433 3.4 mwr 2014-04-30T21:26:00.100Z 36.0656 -97.0474 5km S of Stillwater, Oklahoma 1.117 3.1 ml 2014-04-30T19:46:10.700Z 36.5971 -97.6807 23km SSE of Medford, Oklahoma 5.613 3.4 ml 2014-04-30T08:06:52.200Z 36.7764 -98.073 25km E of Cherokee, Oklahoma 4.476 3 ml 2014-04-30T07:48:08.600Z 36.6037 -97.8342 23km N of Enid, Oklahoma 6.092 3.1 ml 2014-04-28T02:26:40.600Z 36.1057 -97.0443 1km SE of Stillwater, Oklahoma 7.036 3.2 ml 2014-04-27T00:22:29.000Z 36.0752 -97.5579 14km NNE of Crescent, Oklahoma 4.633 3 ml 2014-04-25T23:54:44.800Z 36.1521 -97.2949 15km S of Perry, Oklahoma 3.073 3 ml 2014-04-25T07:38:49.600Z 36.5989 -97.8271 23km NNE of Enid, Oklahoma 6.478 3.2 ml 2014-04-24T17:46:19.000Z 36.7676 -98.715 6km SW of Alva, Oklahoma 5 3.2 ml 2014-04-23T15:35:33.300Z 36.7133 -98.5923 12km SSE of Alva, Oklahoma 7.962 3.1 ml 2014-04-22T09:57:07.000Z 35.5935 -97.3795 7km N of Spencer, Oklahoma 5.913 3.3 ml 2014-04-21T18:16:08.700Z 36.6033 -97.8421 23km N of Enid, Oklahoma 5.822 3.2 ml 2014-04-20T19:31:32.200Z 35.7724 -97.4718 12km SSW of Guthrie, Oklahoma 7.193 3.3 ml 2014-04-20T19:13:41.500Z 35.7717 -97.4829 12km SSW of Guthrie, Oklahoma 5.846 3 ml 2014-04-20T19:07:13.100Z 35.774 -97.4821 12km SSW of Guthrie, Oklahoma 6.717 3.7 mwr 2014-04-19T10:43:10.300Z 36.2777 -97.2517 3km ESE of Perry, Oklahoma 4.157 3.8 mwr 2014-04-17T11:50:07.600Z 36.6797 -98.217 14km ESE of Cherokee, Oklahoma 3.008 3.6 ml 2014-04-14T13:17:58.600Z 35.7751 -97.4839 12km SSW of Guthrie, Oklahoma 7.45 3.1 ml 2014-04-13T20:02:21.100Z 35.7712 -97.4831 13km N of Edmond, Oklahoma 5.896 3.5 ml 2014-04-13T17:00:15.500Z 35.7698 -97.4793 12km N of Edmond, Oklahoma 5.737 3.4 ml 2014-04-12T16:13:15.800Z 35.8899 -97.2681 6km S of Langston, Oklahoma 3.075 3.3 ml 2014-04-12T05:32:52.200Z 36.274 -97.2478 4km ESE of Perry, Oklahoma 5 3.6 mwr 2014-04-12T02:53:38.300Z 35.7673 -97.4814 12km N of Edmond, Oklahoma 5.251 3 ml 2014-04-11T05:17:50.900Z 35.8922 -97.2738 6km SSW of Langston, Oklahoma 5.105 3 ml 2014-04-10T18:18:44.100Z 36.2889 -96.9539 14km WSW of Pawnee, Oklahoma 8.621 3.1 ml 2014-04-10T18:00:48.000Z 36.2894 -96.952 14km WSW of Pawnee, Oklahoma 8.204 3.7 ml 2014-04-10T16:53:47.300Z 36.2888 -96.951 14km WSW of Pawnee, Oklahoma 7.988 3.1 ml 2014-04-10T08:20:41.400Z 35.7809 -97.4845 12km SSW of Guthrie, Oklahoma 5 3.5 ml 2014-04-10T08:19:43.700Z 35.7689 -97.4827 12km N of Edmond, Oklahoma 5.537 3.4 mwr Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 43 of 52
Preparer: D. Horne; Date: 02/15/21 Table 2 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Historical Earthquakes in Oklahoma Greater than 3.0 Magnitude (As of February 9, 2021)
Date and Time Latitude Longitude Epicenter Depth (km) Magnitude Mag. Type1 2014-04-10T07:35:40.500Z 35.7772 -97.4827 12km SSW of Guthrie, Oklahoma 6.837 3.2 ml 2014-04-10T07:33:57.100Z 35.7745 -97.4826 12km SSW of Guthrie, Oklahoma 7.04 4 mwr 2014-04-10T04:48:14.200Z 36.3944 -97.1483 17km NE of Perry, Oklahoma 5.282 3.2 ml 2014-04-09T21:09:30.500Z 35.3745 -96.638 13km SSE of Prague, Oklahoma 6.033 3.2 ml 2014-04-09T17:27:50.400Z 35.7766 -97.483 12km SSW of Guthrie, Oklahoma 6.832 3 ml 2014-04-09T03:36:06.900Z 35.8937 -97.2926 6km SSW of Langston, Oklahoma 4.667 3.2 ml 2014-04-07T18:01:42.000Z 35.8927 -97.2932 6km SSW of Langston, Oklahoma 5.316 3.1 ml 2014-04-07T16:03:03.900Z 35.8913 -97.2752 6km SSW of Langston, Oklahoma 5.131 4.2 mwr 2014-04-07T05:59:34.800Z 36.2853 -96.9806 16km WSW of Pawnee, Oklahoma 4.134 3 ml 2014-04-07T03:25:34.000Z 36.8409 -98.2775 11km NE of Cherokee, Oklahoma 5 3.4 mwr 2014-04-07T01:01:03.200Z 35.8893 -97.2706 6km SSW of Langston, Oklahoma 5 3.1 ml 2014-04-06T14:58:54.900Z 35.8902 -97.2691 6km SSW of Langston, Oklahoma 5 3.8 mwr 2014-04-06T14:25:09.800Z 35.8928 -97.2676 5km S of Langston, Oklahoma 5 3 ml 2014-04-05T12:42:16.900Z 36.1312 -97.6308 20km N of Crescent, Oklahoma 2.174 3.8 mwr 2014-04-05T10:54:55.800Z 36.0788 -97.5462 14km NNE of Crescent, Oklahoma 3.877 3 ml 2014-04-04T18:54:18.800Z 35.8887 -97.2837 6km SSW of Langston, Oklahoma 5 3.1 mwr 2014-04-04T06:42:34.500Z 35.8949 -97.268 5km SSW of Langston, Oklahoma 4.176 3 ml 2014-04-04T03:15:41.800Z 35.8913 -97.2734 6km SSW of Langston, Oklahoma 5 3.1 ml 2014-04-04T02:23:47.700Z 35.8941 -97.2682 5km SSW of Langston, Oklahoma 5.22 3.5 ml 2014-04-03T20:58:39.500Z 36.6805 -98.2169 14km ESE of Cherokee, Oklahoma 5 3.1 ml 2014-04-03T20:33:11.900Z 36.4478 -97.0683 25km S of McCord, Oklahoma 5 3.1 ml 2014-04-03T16:56:50.500Z 35.8905 -97.2703 6km SSW of Langston, Oklahoma 4.797 3.3 ml 2014-04-02T07:10:02.200Z 35.495 -97.2503 1km E of Choctaw, Oklahoma 7.176 3 ml 2014-04-02T00:56:25.900Z 36.6221 -97.6348 22km SSE of Medford, Oklahoma 5 3.3 ml 2014-04-01T17:07:13.700Z 35.8842 -97.285 7km SSW of Langston, Oklahoma 5 3.2 ml 2014-04-01T07:07:43.220Z 35.8993 -97.2614 5km S of Langston, Oklahoma 6.38 3 mb_lg 2014-03-31T23:59:47.800Z 35.887 -97.2621 6km S of Langston, Oklahoma 5 3 ml 2014-03-31T17:17:59.470Z 35.794 -96.978 13km NW of Chandler, Oklahoma 3.4 3.2 ml 2014-03-30T14:09:59.400Z 36.1255 -97.6398 19km NNW of Crescent, Oklahoma 3.903 4.1 mwr 2014-03-30T12:49:42.000Z 36.13 -97.6359 20km N of Crescent, Oklahoma 5 3.4 ml 2014-03-30T08:42:36.400Z 36.1352 -97.6257 20km N of Crescent, Oklahoma 2.483 3.9 mwr 2014-03-30T08:10:31.800Z 36.1317 -97.628 20km N of Crescent, Oklahoma 2.277 3.3 mwr 2014-03-30T08:07:05.200Z 36.1371 -97.624 20km N of Crescent, Oklahoma 2.535 3.3 mwr 2014-03-30T06:59:28.400Z 36.125 -97.644 19km NNW of Crescent, Oklahoma 5 3.3 ml 2014-03-30T06:51:56.300Z 36.1309 -97.6291 20km N of Crescent, Oklahoma 4.831 4.2 mwr 2014-03-30T06:37:43.700Z 36.1288 -97.6404 19km NNW of Crescent, Oklahoma 4.656 3.3 ml 2014-03-30T05:49:29.400Z 35.4911 -97.2465 2km ESE of Choctaw, Oklahoma 7.509 3 ml 2014-03-30T03:55:33.500Z 36.1288 -97.6438 20km NNW of Crescent, Oklahoma 5 3.5 mwr 2014-03-30T03:08:30.800Z 35.4923 -97.2471 2km ESE of Choctaw, Oklahoma 7.403 3.4 mwr 2014-03-29T06:11:18.900Z 35.4906 -97.2415 2km ESE of Choctaw, Oklahoma 7.049 3.1 ml 2014-03-28T23:16:24.300Z 36.1673 -96.9819 8km NE of Stillwater, Oklahoma 6.983 3.2 ml 2014-03-28T17:56:11.200Z 36.1257 -97.6329 19km N of Crescent, Oklahoma 0.393 3.1 ml 2014-03-27T20:05:16.600Z 35.897 -97.286 6km SSW of Langston, Oklahoma 4.6 3.2 ml 2014-03-25T14:01:19.100Z 35.7427 -97.5558 12km NW of Edmond, Oklahoma 6.016 3 mwr 2014-03-24T23:32:46.700Z 35.7693 -96.6517 2km NNE of Stroud, Oklahoma 5.761 3 ml 2014-03-22T19:42:12.210Z 36.8124 -97.5915 12km E of Medford, Oklahoma 4.1 3.3 ml 2014-03-22T19:15:54.400Z 36.638 -97.661 19km SSE of Medford, Oklahoma 5 3 ml 2014-03-22T10:24:25.680Z 37.0752 -97.8436 18km ESE of Anthony, Kansas 6.54 3 mb_lg 2014-03-22T03:05:58.310Z 35.888 -97.299 7km SSW of Langston, Oklahoma 4.5 3.9 mwr 2014-03-22T03:02:35.480Z 35.888 -97.29 7km SSW of Langston, Oklahoma 4.5 3.1 ml 2014-03-22T03:01:32.160Z 35.892 -97.279 6km SSW of Langston, Oklahoma 5 3 ml 2014-03-22T02:30:33.900Z 35.896 -97.27 5km SSW of Langston, Oklahoma 4.5 3.1 ml 2014-03-21T17:30:16.730Z 37.0895 -97.8455 17km ESE of Anthony, Kansas 10.95 3 mb_lg 2014-03-21T09:05:46.100Z 36.0796 -97.5493 14km NNE of Crescent, Oklahoma 4.296 3 ml 2014-03-20T22:42:32.200Z 36.5675 -97.8247 19km NNE of Enid, Oklahoma 3.66 3.3 ml 2014-03-20T14:39:17.800Z 35.891 -97.275 6km SSW of Langston, Oklahoma 5 3.3 ml 2014-03-20T05:12:23.800Z 36.6376 -97.6716 19km SSE of Medford, Oklahoma 6.715 3.1 ml 2014-03-19T20:15:32.000Z 35.949 -96.918 10km ESE of Perkins, Oklahoma 1.6 3.4 mwr 2014-03-19T11:23:14.200Z 36.079 -97.5501 14km NNE of Crescent, Oklahoma 3.7 3.1 ml 2014-03-19T08:54:30.000Z 36.0765 -97.5495 14km NNE of Crescent, Oklahoma 4.258 3.1 ml 2014-03-19T08:28:31.130Z 36.6079 -97.652 23km SSE of Medford, Oklahoma 5 3.1 mb_lg 2014-03-17T23:38:19.100Z 36.0799 -97.5474 14km NNE of Crescent, Oklahoma 4.023 3 ml 2014-03-17T18:45:55.260Z 35.893 -97.275 6km SSW of Langston, Oklahoma 5.1 3.1 ml Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 44 of 52
Preparer: D. Horne; Date: 02/15/21 Table 2 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Historical Earthquakes in Oklahoma Greater than 3.0 Magnitude (As of February 9, 2021)
Date and Time Latitude Longitude Epicenter Depth (km) Magnitude Mag. Type1 2014-03-17T08:13:38.040Z 35.496 -97.307 1km ENE of Nicoma Park, Oklahoma 7.01 3.4 ml 2014-03-16T08:46:20.180Z 37.1918 -97.8992 12km ENE of Anthony, Kansas 3.08 3.7 mwr 2014-03-15T19:27:05.160Z 36.632 -97.669 20km SSE of Medford, Oklahoma 5 3 ml 2014-03-14T02:22:14.440Z 36.02 -97.11 8km NW of Perkins, Oklahoma 4.4 3.1 ml 2014-03-12T19:35:26.460Z 37.1783 -97.8728 14km E of Anthony, Kansas 5 3.2 mb_lg 2014-03-12T09:50:25.100Z 37.1966 -97.8858 13km ENE of Anthony, Kansas 3.1 3.3 mb_lg 2014-03-11T12:55:27.710Z 35.89 -97.282 6km SSW of Langston, Oklahoma 4.89 3.4 mwr 2014-03-10T14:11:20.200Z 36.1251 -96.9075 13km E of Stillwater, Oklahoma 4.334 3.5 ml 2014-03-09T17:05:54.000Z 35.4919 -97.2474 2km ESE of Choctaw, Oklahoma 7.29 3 ml 2014-03-08T21:50:55.000Z 35.796 -96.976 13km NW of Chandler, Oklahoma 5 3.3 ml 2014-03-08T01:34:12.920Z 35.89 -97.281 6km SSW of Langston, Oklahoma 5 3.1 ml 2014-03-08T01:29:04.480Z 35.889 -97.284 6km SSW of Langston, Oklahoma 4.7 3 ml 2014-03-05T14:17:06.390Z 35.593 -97.383 7km N of Spencer, Oklahoma 6.4 3.3 mwr 2014-03-02T14:55:46.900Z 36.5442 -97.0499 14km S of McCord, Oklahoma 3 3 ml 2014-03-02T04:21:46.100Z 35.636 -97.041 14km ESE of Luther, Oklahoma 4.4 3.5 ml 2014-02-27T10:14:01.000Z 36.5438 -97.0616 15km S of McCord, Oklahoma 7.75 3.4 ml 2014-02-27T00:19:10.000Z 36.4476 -97.0735 25km S of McCord, Oklahoma 0.001 3.2 ml 2014-02-26T19:44:37.000Z 36.5906 -97.8097 22km NNE of Enid, Oklahoma 5 3 ml 2014-02-26T19:30:33.000Z 36.675 -97.693 15km SSE of Medford, Oklahoma 5 3.4 ml 2014-02-26T18:18:02.000Z 36.5865 -97.8125 21km NNE of Enid, Oklahoma 5.172 3 ml 2014-02-24T16:44:59.440Z 35.817 -96.943 13km NNW of Chandler, Oklahoma 4.3 3.2 ml 2014-02-24T00:11:32.520Z 36.171 -96.9786 9km NE of Stillwater, Oklahoma 5 3.1 ml 2014-02-23T09:15:41.110Z 36.036 -97.341 12km NW of Langston, Oklahoma 5 3.3 mwr 2014-02-23T07:23:32.700Z 36.0353 -97.3362 12km NW of Langston, Oklahoma 5 3 ml 2014-02-23T04:44:35.800Z 36.175 -96.981 9km NE of Stillwater, Oklahoma 5 3.2 ml 2014-02-23T03:11:38.800Z 36.103 -97.081 2km SW of Stillwater, Oklahoma 5 3 ml 2014-02-21T21:38:49.650Z 35.781 -97.4745 11km SSW of Guthrie, Oklahoma 5.17 3.1 ml 2014-02-21T14:26:12.000Z 36.8695 -97.8886 15km WNW of Medford, Oklahoma 5 3.2 ml 2014-02-19T16:44:56.980Z 35.777 -97.466 11km SSW of Guthrie, Oklahoma 6.1 3.1 ml 2014-02-18T12:16:44.020Z 35.77 -97.459 12km SSW of Guthrie, Oklahoma 5.14 3.2 ml 2014-02-18T11:53:51.140Z 35.777 -97.467 11km SSW of Guthrie, Oklahoma 5.03 3.4 ml 2014-02-17T14:19:13.770Z 35.775 -97.475 12km SSW of Guthrie, Oklahoma 4.4 3 ml 2014-02-17T12:57:39.000Z 35.772 -97.463 12km SSW of Guthrie, Oklahoma 5 3.1 ml 2014-02-17T05:02:11.780Z 35.777 -97.466 11km SSW of Guthrie, Oklahoma 5.39 3.2 ml 2014-02-17T04:54:59.000Z 35.776 -97.469 12km SSW of Guthrie, Oklahoma 7.4 3.8 mwr 2014-02-16T01:51:47.800Z 35.781 -97.477 11km SSW of Guthrie, Oklahoma 5 3.3 ml 2014-02-15T23:20:46.200Z 37.2918 -97.6446 10km S of Conway Springs, Kansas 5 3.1 mb_lg 2014-02-15T00:19:12.990Z 35.7818 -97.4807 11km SSW of Guthrie, Oklahoma 5 3.1 ml 2014-02-14T20:46:15.500Z 35.7756 -97.4693 12km SSW of Guthrie, Oklahoma 5 3 ml 2014-02-12T12:41:37.000Z 36.9963 -97.9271 19km SSE of Anthony, Kansas 10.42 3.4 ml 2014-02-11T08:49:21.400Z 36.1265 -97.2952 18km S of Perry, Oklahoma 7.78 3 ml 2014-02-11T03:19:54.040Z 36.8657 -97.7345 6km N of Medford, Oklahoma 5 3 ml 2014-02-10T23:37:39.000Z 35.8162 -96.9324 13km NNW of Chandler, Oklahoma 5 3.5 mwr 2014-02-09T02:16:02.000Z 35.893 -97.292 6km SSW of Langston, Oklahoma 5 4.1 mwr 2014-02-06T12:48:08.630Z 36.7464 -98.2949 5km E of Cherokee, Oklahoma 4.45 3.3 ml 2014-02-05T23:15:40.000Z 36.8361 -97.7503 3km NNW of Medford, Oklahoma 10.649 3.5 ml 2014-02-04T15:59:51.270Z 36.1286 -97.3101 17km S of Perry, Oklahoma 5 3 ml 2014-02-04T14:08:17.140Z 37.1428 -97.7874 20km NW of Caldwell, Kansas 5 3.3 mb_lg 2014-02-03T09:03:21.580Z 37.132 -97.7684 18km NW of Caldwell, Kansas 5 3.6 mwr 2014-02-01T09:08:02.300Z 35.9505 -96.9074 11km ESE of Perkins, Oklahoma 5 3.6 mwr 2014-01-31T15:52:56.570Z 36.6532 -98.2081 13km NNE of Helena, Oklahoma 8.82 3.1 ml 2014-01-30T04:50:30.580Z 35.947 -96.9153 11km ESE of Perkins, Oklahoma 5.77 3.2 ml 2014-01-29T02:24:06.740Z 35.943 -96.908 11km ESE of Perkins, Oklahoma 5 3.2 ml 2014-01-29T02:07:14.740Z 35.9446 -96.9111 11km ESE of Perkins, Oklahoma 5 3 ml 2014-01-28T15:05:01.590Z 35.6 -97.389 8km N of Spencer, Oklahoma 5.5 3 ml 2014-01-26T06:38:18.200Z 35.1097 -96.1792 15km SSE of Wetumka, Oklahoma 2.54 3.1 ml 2014-01-09T23:07:37.170Z 35.8184 -96.9338 13km NNW of Chandler, Oklahoma 2.66 3 ml 2014-01-09T03:26:53.060Z 35.5421 -96.773 10km NW of Prague, Oklahoma 3.21 3.8 ml 2014-01-04T23:33:32.000Z 36.129 -97.322 18km S of Perry, Oklahoma 5 3.7 mb_lg 2014-01-04T21:26:17.000Z 35.819 -96.94 14km NNW of Chandler, Oklahoma 5 3.2 mb_lg 2014-01-04T20:35:30.100Z 36.8398 -98.3576 9km N of Cherokee, Oklahoma 2.988 3.5 mb_lg 2014-01-04T05:27:24.900Z 35.557 -97.234 4km ESE of Jones, Oklahoma 5.1 3 ml 2014-01-02T17:20:26.850Z 36.127 -96.895 14km E of Stillwater, Oklahoma 4.4 3.2 ml Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 45 of 52
Preparer: D. Horne; Date: 02/15/21 Table 2 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Historical Earthquakes in Oklahoma Greater than 3.0 Magnitude (As of February 9, 2021)
Date and Time Latitude Longitude Epicenter Depth (km) Magnitude Mag. Type1 2014-01-02T13:19:32.000Z 36.1226 -97.3227 18km S of Perry, Oklahoma 5 3.1 ml 2013-12-29T08:14:36.500Z 35.8914 -97.2966 7km SSW of Langston, Oklahoma 5 3.7 mwr 2013-12-29T02:41:02.400Z 36.958 -97.67 9km SW of Caldwell, Kansas 5.2 3.6 mwr 2013-12-28T14:26:52.300Z 36.1404 -97.3219 16km S of Perry, Oklahoma 5 3.3 ml 2013-12-27T22:19:37.100Z 35.6835 -97.3826 9km ENE of Edmond, Oklahoma 3.553 3.1 ml 2013-12-25T10:30:37.600Z 35.6012 -97.3837 8km N of Spencer, Oklahoma 5.95 3 ml 2013-12-25T03:08:17.110Z 35.6818 -97.3931 8km ENE of Edmond, Oklahoma 5 3.7 mb_lg 2013-12-22T16:28:29.190Z 36.469 -97.047 23km S of McCord, Oklahoma 5 3.2 ml 2013-12-17T13:23:39.640Z 35.4 -96.648 10km SSE of Prague, Oklahoma 3.3 3.4 ml 2013-12-16T15:09:53.900Z 37.1297 -97.7758 18km NW of Caldwell, Kansas 5 3.8 mwr 2013-12-08T06:27:32.980Z 35.6045 -97.3971 9km SE of Edmond, Oklahoma 6.18 3.3 ml 2013-12-07T23:58:18.670Z 35.6077 -97.399 8km SE of Edmond, Oklahoma 6.73 3.2 ml 2013-12-07T19:26:30.100Z 35.6089 -97.3975 8km SE of Edmond, Oklahoma 6.431 3 ml 2013-12-07T18:10:24.590Z 35.6073 -97.3863 9km ESE of Edmond, Oklahoma 8.44 4.5 mwr 2013-12-06T00:37:13.850Z 36.8747 -97.9889 23km WNW of Medford, Oklahoma 5 3.1 ml 2013-12-02T07:21:52.620Z 35.611 -97.378 9km N of Spencer, Oklahoma 9.01 3.1 ml 2013-12-02T07:10:54.510Z 35.611 -97.379 9km N of Spencer, Oklahoma 8.66 3.2 ml 2013-11-30T21:13:39.000Z 35.8934 -97.2957 6km SSW of Langston, Oklahoma 5 3 ml 2013-11-27T07:36:25.610Z 36.5849 -97.8446 21km N of Enid, Oklahoma 5.26 3 ml 2013-11-26T21:43:55.440Z 35.602 -97.378 8km N of Spencer, Oklahoma 6.6 3 ml 2013-11-22T14:33:58.500Z 36.1792 -96.9537 11km NE of Stillwater, Oklahoma 3.11 3.6 ml 2013-11-18T08:37:41.900Z 36.183 -96.958 11km NE of Stillwater, Oklahoma 5 3.2 ml 2013-11-15T00:17:32.160Z 35.5898 -97.3808 7km N of Spencer, Oklahoma 5.21 3 mb_lg 2013-11-12T23:04:00.700Z 35.388 -96.656 11km SSE of Prague, Oklahoma 2.1 3.2 ml 2013-11-12T04:00:58.590Z 36.5875 -97.8382 21km N of Enid, Oklahoma 5.76 3.4 mb_lg 2013-11-11T21:15:06.060Z 35.7156 -97.4383 7km NNE of Edmond, Oklahoma 5 3.3 ml 2013-11-11T11:07:08.600Z 35.721 -97.4311 8km NNE of Edmond, Oklahoma 5 3.2 ml 2013-11-10T23:25:00.270Z 35.722 -97.4302 8km NNE of Edmond, Oklahoma 5.03 3.5 ml 2013-11-08T05:52:59.400Z 35.5919 -97.3874 7km N of Spencer, Oklahoma 5 3.3 ml 2013-11-08T05:50:05.500Z 35.5911 -97.3809 7km N of Spencer, Oklahoma 5 3.3 ml 2013-11-05T08:32:48.270Z 35.5873 -97.4172 8km NNW of Spencer, Oklahoma 5 3.2 mb_lg 2013-11-05T04:01:34.690Z 35.6038 -97.3715 8km N of Spencer, Oklahoma 5 3.8 mwr 2013-11-04T01:52:02.020Z 35.599 -97.3863 8km N of Spencer, Oklahoma 5.821 3.3 mb_lg 2013-11-02T15:30:26.500Z 35.5948 -97.3899 8km N of Spencer, Oklahoma 5 3 ml 2013-11-02T14:19:01.700Z 35.611 -97.361 8km NW of Jones, Oklahoma 5 3.4 mwr 2013-11-02T12:04:14.300Z 35.598 -97.378 8km N of Spencer, Oklahoma 5.77 3.2 ml 2013-11-02T09:36:45.200Z 35.598 -97.367 8km N of Spencer, Oklahoma 5 3.5 mwr 2013-10-26T03:04:22.210Z 36.5133 -97.8752 13km N of Enid, Oklahoma 4.94 3 ml 2013-10-20T09:17:47.370Z 36.648 -97.829 19km SSW of Medford, Oklahoma 5 3.1 ml 2013-10-12T03:25:23.590Z 34.086 -96.579 16km NE of Kingston, Oklahoma 5 3 ml 2013-10-08T10:48:21.300Z 36.726 -98.006 25km WSW of Medford, Oklahoma 3.43 3.2 ml 2013-10-05T07:11:49.600Z 36.58 -97.8159 21km NNE of Enid, Oklahoma 5.12 3.3 ml 2013-10-02T00:38:52.210Z 36.594 -97.831 22km N of Enid, Oklahoma 4.2 3.5 ml 2013-10-01T23:28:41.950Z 36.593 -97.836 22km N of Enid, Oklahoma 5 3.1 ml 2013-10-01T19:26:15.460Z 36.592 -97.837 22km N of Enid, Oklahoma 5 3.2 ml 2013-09-26T05:17:12.100Z 35.5896 -97.3751 7km N of Spencer, Oklahoma 6.07 3.2 ml 2013-09-23T13:56:25.540Z 33.946 -97.161 4km WNW of Marietta, Oklahoma 5 3.4 ml 2013-09-23T11:40:40.000Z 33.9544 -97.1107 2km NNE of Marietta, Oklahoma 8.933 3.2 ml 2013-09-15T05:58:13.900Z 35.4085 -96.5427 10km SSW of Boley, Oklahoma 4.88 3.1 ml 2013-08-10T08:44:27.270Z 35.569 -97.289 0km NNW of Jones, Oklahoma 5.9 3.3 ml 2013-08-08T22:46:29.350Z 36.863 -97.994 24km WNW of Medford, Oklahoma 5 3.2 ml 2013-08-08T06:57:51.000Z 35.3482 -96.5676 16km NE of Seminole, Oklahoma 3.93 3.3 ml 2013-08-01T02:39:23.000Z 35.5179 -97.1282 4km NE of Harrah, Oklahoma 12.32 3 ml 2013-07-31T02:43:37.000Z 35.573 -97.302 1km WNW of Jones, Oklahoma 7 3 ml 2013-07-27T20:23:39.400Z 36.66 -97.387 7km WSW of Tonkawa, Oklahoma 5 3.3 ml 2013-07-24T11:52:05.000Z 35.373 -96.481 13km S of Boley, Oklahoma 8.6 3.5 ml 2013-07-01T09:11:38.000Z 36.636 -97.683 26km NE of Enid, Oklahoma 4 3.5 ml 2013-07-01T08:19:24.000Z 36.673 -97.668 19km NE of Enid, Oklahoma 7.9 3.2 ml 2013-06-30T02:55:58.000Z 34.097 -96.548 9km E of Madill, Oklahoma 5 3 ml 2013-06-27T00:38:03.020Z 35.474 -97.112 4km ESE of Harrah, Oklahoma 10.8 3.4 ml 2013-06-26T21:00:50.500Z 35.96 -96.907 11km E of Perkins, Oklahoma 5 3 ml 2013-06-24T23:07:49.490Z 34.47 -96.283 9km SW of Coalgate, Oklahoma 5 3.2 ml 2013-06-18T12:42:49.000Z 35.477 -97.115 8km NNE of McLoud, Oklahoma 13.5 3.2 ml Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 46 of 52
Preparer: D. Horne; Date: 02/15/21 Table 2 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Historical Earthquakes in Oklahoma Greater than 3.0 Magnitude (As of February 9, 2021)
Date and Time Latitude Longitude Epicenter Depth (km) Magnitude Mag. Type1 2013-06-17T06:39:01.000Z 35.463 -97.116 4km NNW of McLoud, Oklahoma 7.4 3.3 ml 2013-06-16T22:35:04.000Z 35.566 -97.292 8km W of Luther, Oklahoma 6.1 3.2 ml 2013-06-16T18:06:17.590Z 35.568 -97.309 6km E of Jones, Oklahoma 7.1 3.6 ml 2013-06-16T11:49:50.900Z 35.408 -96.471 9km S of Boley, Oklahoma 3.6 3 ml 2013-06-16T08:08:37.500Z 35.565 -97.308 1km W of Jones, Oklahoma 7.2 3.1 ml 2013-06-10T22:24:31.000Z 35.466 -97.009 8km ENE of McLoud, Oklahoma 6.6 3.3 ml 2013-06-09T07:12:32.380Z 35.615 -97.262 5km NNE of Jones, Oklahoma 7.2 3.7 mblg 2013-06-07T06:52:28.500Z 35.01 -96.308 Oklahoma 16.7 3 ml 2013-05-27T07:58:20.400Z 34.075 -96.59 15km ENE of Kingston, Oklahoma 6.7 3.2 ml 2013-05-20T01:46:35.000Z 35.666 -97.105 8km E of Luther, Oklahoma 5.5 3.2 ml 2013-04-28T03:06:42.200Z 34.135 -96.808 13km ENE of Dickson, Oklahoma 5 3.5 ml 2013-04-27T20:14:27.200Z 35.656 -97.126 6km E of Luther, Oklahoma 6.6 3.4 ml 2013-04-25T04:58:39.590Z 35.667 -97.126 5km NE of Luther, Oklahoma 6.8 3 ml 2013-04-24T22:54:33.100Z 35.669 -97.112 8km ENE of Luther, Oklahoma 5.3 3 ml 2013-04-24T18:04:22.170Z 35.69 -97.089 10km ENE of Luther, Oklahoma 5 3.3 ml 2013-04-23T19:33:58.540Z 35.679 -97.104 8km ENE of Luther, Oklahoma 6.6 3.1 ml 2013-04-22T00:00:22.500Z 35.612 -97.258 6km NE of Jones, Oklahoma 5.5 3 ml 2013-04-17T16:51:01.800Z 35.686 -97.083 12km E of Luther, Oklahoma 6.8 3.2 ml 2013-04-17T16:25:39.240Z 35.685 -97.082 10km ENE of Luther, Oklahoma 7 3.2 ml 2013-04-17T14:56:16.300Z 35.659 -97.123 7km NE of Luther, Oklahoma 7.7 3.2 ml 2013-04-17T01:14:04.300Z 35.659 -97.125 5km ENE of Luther, Oklahoma 7.7 3.4 ml 2013-04-16T21:51:21.210Z 35.663 -97.12 6km E of Luther, Oklahoma 2.3 3.6 ml 2013-04-16T21:03:04.580Z 35.533 -96.764 8km NW of Prague, Oklahoma 5 3.3 ml 2013-04-16T17:09:01.720Z 35.679 -97.107 8km ENE of Luther, Oklahoma 2.5 3.3 ml 2013-04-16T17:07:19.550Z 35.673 -97.114 7km E of Luther, Oklahoma 2.3 3.7 ml 2013-04-16T16:47:50.940Z 35.668 -97.115 7km E of Luther, Oklahoma 6.9 3.3 ml 2013-04-16T16:44:05.000Z 35.671 -97.119 10km ESE of Luther, Oklahoma 7.1 3.5 ml 2013-04-16T10:20:27.790Z 35.684 -97.093 Oklahoma 6.5 3.3 ml 2013-04-16T10:16:53.000Z 35.681 -97.098 8km ENE of Luther, Oklahoma 7 4.2 mwr 2013-04-16T07:16:42.700Z 35.674 -97.106 8km E of Luther, Oklahoma 6.9 3.6 ml 2013-04-16T07:15:30.400Z 35.672 -97.108 8km E of Luther, Oklahoma 7 3 ml 2013-04-16T06:56:29.700Z 35.686 -97.089 12km ENE of Luther, Oklahoma 6.2 4.4 mwr 2013-03-21T16:34:35.000Z 35.467 -97.396 1km N of Midwest City, Oklahoma 5 3.2 ml 2013-03-21T15:56:41.680Z 35.492 -97.381 4km NNE of Midwest City, Oklahoma 10.5 3.3 ml 2013-03-16T19:39:12.000Z 35.521 -96.783 9km WNW of Prague, Oklahoma 5 3 ml 2013-03-11T17:32:18.490Z 35.417 -96.548 9km SSW of Boley, Oklahoma 5 3.2 mblg 2013-03-06T18:24:54.920Z 35.545 -96.719 10km NW of Prague, Oklahoma 5 3.4 mblg 2013-03-04T10:22:54.160Z 34.191 -96.681 6km SSE of Tishomingo, Oklahoma 5 3.5 mblg 2013-02-27T19:51:12.760Z 35.46 -97.335 3km SSW of Nicoma Park, Oklahoma 5 3.5 mblg 2013-01-16T20:51:43.000Z 35.592 -97.356 6km WNW of Jones, Oklahoma 5 3.2 ml 2013-01-16T06:26:35.270Z 35.619 -97.337 Oklahoma 5 3.2 mblg 2013-01-04T01:59:20.000Z 35.38 -96.515 Oklahoma 5 3.5 mwr 2012-12-16T16:46:07.000Z 36.128 -96.855 Oklahoma 5 3.1 ml 2012-12-12T18:37:00.000Z 35.37 -96.496 Oklahoma 5 3 ml 2012-12-12T03:30:15.000Z 35.532 -96.759 Oklahoma 5 3.1 ml 2012-11-17T04:48:58.000Z 36.661 -97.381 Oklahoma 5 3 ml 2012-10-28T04:00:34.000Z 35.422 -96.537 Oklahoma 3.3 3.3 ml 2012-10-21T10:44:15.000Z 35.653 -97.215 Oklahoma 5 3.4 ml 2012-10-17T04:42:40.000Z 35.67 -97.111 Oklahoma 5 3.2 mblg 2012-10-09T08:49:07.000Z 36.083 -97.386 Oklahoma 8.9 3.3 ml 2012-09-30T19:17:17.000Z 35.523 -96.779 Oklahoma 5 3 ml 2012-09-09T01:58:52.000Z 35.375 -96.537 Oklahoma 2.5 3.4 ml 2012-08-18T03:30:11.000Z 35.53 -96.777 Oklahoma 3.2 3.3 ml 2012-08-07T10:47:50.000Z 35.395 -96.587 Oklahoma 5 3 ml 2012-07-31T16:03:40.000Z 35.558 -96.754 Oklahoma 3 3.1 ml 2012-07-30T19:35:06.000Z 35.497 -96.824 Oklahoma 5 3.4 ml 2012-07-03T16:11:37.000Z 35.585 -97.331 Oklahoma 5 3.2 ml 2012-06-14T20:24:28.000Z 35.407 -97.434 Oklahoma City urban area, Oklahoma 1.9 3.1 ml 2012-06-13T22:44:32.000Z 35.46 -96.7 Oklahoma 3 3.1 ml 2012-06-13T06:21:36.590Z 35.552 -97.264 Oklahoma 5 3.3 mblg 2012-05-11T04:37:50.000Z 35.512 -96.788 Oklahoma 5 3.2 ml 2012-05-10T21:14:31.000Z 35.51 -96.781 Oklahoma 5 3.8 mwr 2012-04-30T17:14:01.000Z 35.53 -96.76 Oklahoma 5 3.2 ml Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 47 of 52
Preparer: D. Horne; Date: 02/15/21 Table 2 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Historical Earthquakes in Oklahoma Greater than 3.0 Magnitude (As of February 9, 2021)
Date and Time Latitude Longitude Epicenter Depth (km) Magnitude Mag. Type1 2012-04-28T02:14:25.000Z 35.534 -96.748 Oklahoma 5 3.1 ml 2012-04-21T12:45:25.000Z 35.58 -97.07 Oklahoma 5 3.2 ml 2012-04-16T08:12:00.000Z 35.53 -96.759 Oklahoma 4.4 3.8 mwr 2012-04-14T07:35:58.000Z 34.944 -96.001 Oklahoma 5 3 ml 2012-04-12T12:10:04.000Z 35.523 -96.774 Oklahoma 5 3.1 mblg 2012-04-06T16:20:28.000Z 35.72 -97.159 Oklahoma 5 3.1 ml 2012-04-03T07:34:00.000Z 34.635 -95.875 Oklahoma 5 4.1 mb 2012-03-31T11:54:11.000Z 35.437 -96.574 Oklahoma 5 3.3 mblg 2012-03-10T10:11:42.000Z 35.446 -96.572 Oklahoma 0.9 3.1 ml 2012-02-29T22:20:42.000Z 35.725 -97.168 Oklahoma 4.9 3 mblg 2012-02-07T16:29:29.000Z 35.395 -96.524 Oklahoma 5 3.3 ml 2012-01-17T13:26:43.000Z 35.378 -96.546 Oklahoma 3.6 3 ml 2012-01-03T10:56:58.000Z 35.536 -96.75 Oklahoma 3.6 3.4 ml 2011-12-31T08:07:17.000Z 35.391 -96.52 Oklahoma 5 3.6 ml 2011-12-25T14:10:41.000Z 35.398 -96.53 Oklahoma 5 3.6 ml 2011-12-09T16:46:50.000Z 35.475 -96.855 Oklahoma 5 3 ml 2011-12-03T04:42:12.000Z 35.525 -96.768 Oklahoma 9.3 3.3 ml 2011-11-27T11:52:26.000Z 35.728 -97.166 Oklahoma 5 3.1 ml 2011-11-25T21:24:29.000Z 35.512 -96.746 Oklahoma 3.8 3.4 ml 2011-11-25T20:09:47.000Z 35.461 -96.881 Oklahoma 0.1 3.4 ml 2011-11-24T21:11:04.000Z 35.563 -96.788 Oklahoma 6.2 3.4 mwr 2011-11-21T21:46:09.000Z 35.503 -96.81 Oklahoma 5 3 ml 2011-11-18T07:41:08.000Z 35.541 -96.762 Oklahoma 7.4 3.3 ml 2011-11-16T17:10:52.000Z 35.505 -96.803 Oklahoma 5 3.2 ml 2011-11-14T05:31:42.000Z 35.521 -96.782 Oklahoma 3.1 3.2 ml 2011-11-13T09:49:12.000Z 35.457 -96.876 Oklahoma 4.8 3.2 ml 2011-11-12T01:41:03.000Z 35.532 -96.753 Oklahoma 6.2 3.2 ml 2011-11-12T01:18:43.000Z 35.545 -96.73 Oklahoma 3.9 3.1 ml 2011-11-11T19:19:16.000Z 35.537 -96.753 Oklahoma 3.6 3.2 ml 2011-11-10T08:36:38.000Z 35.487 -96.85 Oklahoma 3.3 3.2 md 2011-11-09T15:21:02.000Z 35.513 -97.39 Oklahoma City urban area, Oklahoma 3.1 3 md 2011-11-09T12:08:36.000Z 35.534 -96.761 Oklahoma 5 3.4 ml 2011-11-08T19:05:18.000Z 35.526 -96.77 Oklahoma 3 3.5 mwr 2011-11-08T03:05:07.000Z 35.52 -96.786 Oklahoma 5 3.1 ml 2011-11-08T02:46:57.000Z 35.531 -96.788 Oklahoma 5 4.8 mwr 2011-11-07T17:09:52.000Z 35.506 -96.798 Oklahoma 5 3.2 ml 2011-11-07T13:50:20.000Z 35.477 -96.856 Oklahoma 3.1 3.1 md 2011-11-07T08:12:35.000Z 35.512 -96.786 Oklahoma 3.1 3.1 md 2011-11-07T02:38:20.000Z 35.533 -96.75 Oklahoma 5 3.1 ml 2011-11-07T01:26:31.000Z 35.518 -96.786 Oklahoma 3.1 3.3 mblg 2011-11-07T01:17:13.000Z 35.522 -96.778 Oklahoma 4 3 md 2011-11-06T18:26:57.000Z 35.473 -96.869 Oklahoma 3.1 3.1 md 2011-11-06T17:52:35.000Z 35.494 -96.828 Oklahoma 3.1 3.4 mwr 2011-11-06T15:07:07.000Z 35.484 -96.856 Oklahoma 5 3.8 mwr 2011-11-06T11:03:52.000Z 35.496 -96.838 Oklahoma 5 3.1 ml 2011-11-06T10:52:35.000Z 35.537 -96.779 Oklahoma 3.1 3.6 mwr 2011-11-06T09:39:57.000Z 35.469 -96.865 Oklahoma 5 3.7 mwr 2011-11-06T09:22:04.000Z 35.485 -96.844 Oklahoma 5 3.5 ml 2011-11-06T08:14:13.000Z 35.525 -96.771 Oklahoma 5.6 3.1 ml 2011-11-06T08:04:56.270Z 35.585 -96.836 Oklahoma 5 3 mblg 2011-11-06T07:38:31.710Z 35.517 -96.834 Oklahoma 5 3.6 mblg 2011-11-06T07:32:41.000Z 35.48 -96.847 Oklahoma 5 3.2 ml 2011-11-06T06:31:11.000Z 35.479 -96.859 Oklahoma 5 3.7 mwr 2011-11-06T04:53:59.000Z 35.546 -96.749 Oklahoma 5 3.3 ml 2011-11-06T04:31:50.000Z 35.522 -96.776 Oklahoma 5 3.9 ml 2011-11-06T04:08:13.000Z 35.515 -96.789 Oklahoma 5 3 ml 2011-11-06T04:03:42.000Z 35.521 -96.771 Oklahoma 5 4 ml 2011-11-06T03:53:10.000Z 35.532 -96.765 Oklahoma 5.2 5.7 mww 2011-11-06T01:03:58.000Z 35.546 -96.749 Oklahoma 5 3 ml 2011-11-05T14:36:30.380Z 35.518 -96.778 Oklahoma 5 3.6 ml 2011-11-05T13:42:26.000Z 35.53 -96.766 Oklahoma 5 3.2 ml 2011-11-05T11:24:15.000Z 35.525 -96.773 Oklahoma 5 3.4 ml 2011-11-05T09:12:11.000Z 35.528 -96.766 Oklahoma 5 3.3 ml Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 48 of 52
Preparer: D. Horne; Date: 02/15/21 Table 2 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Historical Earthquakes in Oklahoma Greater than 3.0 Magnitude (As of February 9, 2021)
Date and Time Latitude Longitude Epicenter Depth (km) Magnitude Mag. Type1 2011-11-05T07:27:19.000Z 35.544 -96.765 Oklahoma 3.2 3.3 ml 2011-11-05T07:12:45.000Z 35.55 -96.764 Oklahoma 3.1 4.8 mwr 2011-10-28T09:18:46.000Z 35.525 -97.386 Oklahoma City urban area, Oklahoma 5 3.4 mblg 2011-10-28T06:24:57.000Z 35.518 -97.38 Oklahoma City urban area, Oklahoma 3.2 3.2 mblg 2011-10-05T10:40:27.000Z 35.504 -97.232 Oklahoma 3.8 3 ml 2011-09-12T15:35:28.000Z 35.629 -97.244 Oklahoma 3.4 3.3 ml 2011-09-06T00:19:06.000Z 35.466 -97.045 Oklahoma 5 3 ml 2011-08-31T19:58:25.000Z 35.498 -97.25 Oklahoma 3.1 3 ml 2011-08-18T16:50:52.000Z 34.881 -97.744 Oklahoma 5 3 ml 2011-08-01T01:20:07.000Z 35.522 -97.226 Oklahoma 5 3 ml 2011-03-31T05:41:30.000Z 35.439 -96.53 Oklahoma 1.1 3.2 mwr 2011-03-11T10:56:23.000Z 35.45 -97.087 Oklahoma 5 3.1 mblg 2011-01-15T10:51:30.000Z 35.509 -97.222 Oklahoma 3.4 3.4 mblg 2010-12-28T01:49:24.000Z 34.696 -95.893 Oklahoma 5 3.1 md 2010-12-24T10:49:07.000Z 34.69 -96.361 Oklahoma 5 3 md 2010-12-12T01:07:56.000Z 35.431 -96.981 Oklahoma 5 3.2 mwr 2010-11-28T13:46:26.000Z 35.619 -97.239 Oklahoma 3.4 3.3 md 2010-11-28T03:28:43.000Z 35.612 -97.242 Oklahoma 2.5 3.5 mblg 2010-11-28T03:26:47.000Z 35.654 -97.224 Oklahoma 5 3 mblg 2010-11-24T23:45:13.000Z 35.614 -97.24 Oklahoma 6.2 3.1 mblg 2010-11-24T22:48:30.000Z 35.612 -97.246 Oklahoma 5 3.9 mwr 2010-10-25T20:53:13.000Z 34.874 -97.741 Oklahoma 5 3.2 mblg 2010-10-13T14:06:30.000Z 35.192 -97.32 Oklahoma 13 4.4 mwc 2010-10-01T22:39:14.000Z 34.861 -96.029 Oklahoma 5 3.1 mblg 2010-09-25T12:19:26.000Z 34.109 -96.715 Oklahoma 5 3.3 mblg 2010-09-19T22:01:47.000Z 35.611 -97.246 Oklahoma 5 3.5 mwr 2010-09-16T21:41:34.000Z 35.609 -97.243 Oklahoma 4 3.3 mwr 2010-09-15T20:03:53.000Z 35.609 -97.242 Oklahoma 4.2 3.1 mblg 2010-09-04T16:22:09.000Z 35.611 -97.24 Oklahoma 3.3 3.3 mblg 2010-09-01T00:46:31.000Z 35.611 -97.235 Oklahoma 3.1 3.1 mblg 2010-08-02T09:52:19.000Z 35.559 -97.241 Oklahoma 3.2 3.4 mblg 2010-06-14T21:33:56.500Z 34.865 -97.676 Oklahoma 5 3.1 md 2010-05-07T12:44:57.000Z 35.528 -97.299 Oklahoma 5.2 3.4 mblg 2010-04-15T13:22:36.000Z 34.631 -96.268 Oklahoma 0.9 3.2 mblg 2010-04-15T00:49:51.360Z 34.705 -96.398 Oklahoma 5 3 mblg 2010-04-12T04:04:48.000Z 35.611 -97.122 Oklahoma 5 3 mblg 2010-04-08T12:42:43.000Z 35.523 -97.284 Oklahoma 0.4 3.4 mblg 2010-03-22T02:37:18.310Z 35.556 -96.75 Oklahoma 8 3.7 mwr 2010-03-13T09:02:44.410Z 35.387 -98.113 Oklahoma 5 3.1 mblg 2010-03-11T23:57:29.510Z 35.475 -98.123 Oklahoma 6.4 3.4 mblg 2010-03-11T10:54:25.000Z 35.401 -98.06 Oklahoma 5 3 md 2010-03-11T08:11:01.900Z 35.378 -98.046 Oklahoma 5 3 md 2010-03-10T06:04:35.610Z 35.599 -96.769 Oklahoma 5 3.1 mblg 2010-03-05T20:35:13.750Z 35.582 -96.784 Oklahoma 5 3.1 mblg 2010-02-27T22:22:27.310Z 35.553 -96.752 Oklahoma 5 4.1 mwr 2010-02-26T09:02:07.600Z 35.616 -97.064 Oklahoma 5.7 3.1 mblg 2010-02-19T16:12:48.820Z 35.668 -97.05 Oklahoma 5 3 mblg 2010-02-15T03:32:26.400Z 35.557 -97.298 Oklahoma 3.3 3 mwr 2010-02-13T05:30:55.780Z 35.53 -97.272 Oklahoma 8.1 3.2 mwr 2010-01-24T07:14:52.230Z 35.502 -97.245 Oklahoma 6 3.6 mwr 2010-01-17T13:33:43.710Z 35.553 -97.221 Oklahoma 5 3 mblg 2010-01-15T15:27:02.320Z 35.555 -97.249 Oklahoma 8 3.7 mwr 2010-01-15T15:18:26.350Z 35.576 -97.25 Oklahoma 8 3.8 mwr 2010-01-14T10:05:34.150Z 35.539 -97.238 Oklahoma 5 3.3 mblg 2009-12-20T05:05:21.340Z 35.554 -97.267 Oklahoma 5 3.1 mblg 2009-12-13T08:38:25.880Z 35.587 -97.285 Oklahoma 5 3.6 mblg 2009-12-12T11:34:05.450Z 35.556 -97.316 Oklahoma 5 3.1 mblg 2009-12-07T17:44:25.180Z 35.556 -97.25 Oklahoma 5 3.5 mblg 2009-11-29T01:36:58.630Z 35.563 -97.275 Oklahoma 5 3 mblg 2009-11-17T04:00:17.770Z 34.462 -97.532 Oklahoma 5 3.1 mblg 2009-11-16T11:12:37.140Z 35.482 -97.228 Oklahoma 5 3 mblg 2009-11-14T11:13:01.340Z 35.494 -97.204 Oklahoma 5 3.1 mblg 2009-10-23T03:56:29.730Z 35.804 -97.029 Oklahoma 5 3 mblg Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 49 of 52
Preparer: D. Horne; Date: 02/15/21 Table 2 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Historical Earthquakes in Oklahoma Greater than 3.0 Magnitude (As of February 9, 2021)
Date and Time Latitude Longitude Epicenter Depth (km) Magnitude Mag. Type1 2009-08-28T02:09:06.000Z 35.565 -97.29 Oklahoma 5 3.5 mblg 2009-08-27T08:22:14.530Z 34.942 -96.618 Oklahoma 5 3.4 mblg 2009-07-22T02:25:59.800Z 35.742 -96.944 Oklahoma 5 3.3 mblg 2009-07-01T17:14:48.240Z 35.547 -97.169 Oklahoma 5 3.4 mblg 2009-06-26T21:23:13.750Z 36.361 -97.467 Oklahoma 5 3.7 mblg 2009-06-14T21:31:09.020Z 35.659 -96.85 Oklahoma 5 3.4 mblg 2009-03-08T13:06:39.940Z 35.446 -97.456 Oklahoma City urban area, Oklahoma 5 3.4 mblg 2009-02-25T04:14:15.330Z 34.735 -96.036 Oklahoma 5 3.3 mblg 2009-02-22T09:43:06.750Z 36.369 -98.087 Oklahoma 5 3.2 mblg 2009-02-03T10:23:10.010Z 34.589 -96.34 22km NW of Coalgate, Oklahoma 5 3.1 mblg 2009-01-28T11:19:09.470Z 35.163 -97.871 Oklahoma 5 3.4 mblg 2008-10-30T16:25:00.670Z 35.443 -97.118 Oklahoma 5 3.1 mblg 2008-10-14T03:07:28.030Z 35.766 -100.714 Texas Panhandle region 5 3.7 mwr 2008-10-12T12:08:15.770Z 35.621 -100.315 Texas Panhandle region 5 3 mblg 2008-06-09T22:59:47.120Z 35.346 -96.767 Oklahoma 5 3.1 md 2007-10-07T13:54:21.550Z 34.51 -100.146 Texas Panhandle region 5 3.1 mblg 2007-09-27T15:21:02.060Z 35.471 -100.108 Texas Panhandle region 5 3 mblg 2007-05-27T21:03:22.110Z 35.149 -95.976 Oklahoma 5 3.2 md 2006-10-06T22:13:16.780Z 34.122 -97.625 Oklahoma 5 3.5 mblg 2006-04-05T18:46:23.140Z 34.069 -97.314 Oklahoma 5 3 mblg 2006-03-15T08:30:25.860Z 35.091 -96.3 Oklahoma 5 3 md 2005-04-22T05:17:04.090Z 34.179 -95.192 Oklahoma 5 3 mblg 2004-11-22T23:42:13.450Z 34.864 -97.672 Oklahoma 5 3 mblg 2004-06-08T00:15:09.990Z 34.233 -97.254 Oklahoma 5 3.5 mblg 2002-10-20T02:18:13.000Z 34.274 -96.079 Oklahoma 5 3.4 mblg 2002-05-31T09:57:10.020Z 34.025 -97.619 Oklahoma 5 3.3 mblg 2002-02-08T16:07:13.600Z 34.727 -98.361 Oklahoma 5 3.8 mblg 2001-07-24T14:02:35.000Z 37.7 -97 Kansas 5 3 mblg 1999-10-25T23:19:58.370Z 36.846 -99.659 Oklahoma 26.1 3 mblg 1998-10-30T17:41:22.200Z 36.8 -97.6 Oklahoma 5 3.5 mblg 1998-07-07T18:44:44.460Z 34.719 -97.589 Oklahoma 5 3.2 mblg 1998-04-28T14:13:01.680Z 34.782 -98.416 Oklahoma 5 3.9 mb 1997-09-06T23:38:00.910Z 34.66 -96.435 Oklahoma 5 4.5 mblg 1997-02-15T09:08:55.460Z 34.973 -100.569 Texas Panhandle region 5 3.2 mblg 1997-02-12T23:53:10.770Z 34.947 -100.89 Texas Panhandle region 5 3 mblg 1996-11-23T10:54:18.500Z 35.04 -100.504 Texas Panhandle region 5 3 mblg 1995-09-15T00:31:33.260Z 36.87 -98.69 Oklahoma 5 4.1 mblg 1995-06-01T04:49:29.320Z 34.287 -96.732 Oklahoma 5 3 mblg 1995-04-05T05:31:16.230Z 35.2 -99.028 Oklahoma 5 3 mblg 1995-01-18T15:51:39.420Z 34.774 -97.596 Oklahoma 5 4.2 mblg 1994-04-29T03:28:58.680Z 36.25 -98.09 Oklahoma 5 3 mblg 1993-01-14T17:06:10.450Z 36.595 -98.275 Oklahoma 5 3.1 mblg 1992-12-17T07:18:04.270Z 34.744 -97.581 Oklahoma 5 3.6 mblg 1991-01-24T05:00:26.900Z 36.378 -97.3 Oklahoma 5 3 mblg 1990-11-15T11:44:41.400Z 34.76 -97.59 Oklahoma 5 3.9 mblg 1989-07-20T06:07:50.420Z 36.434 -98.876 Oklahoma 5 3.1 mblg 1987-12-08T01:42:40.300Z 36.055 -98.024 Oklahoma 5 3.7 mblg 1987-01-24T16:08:17.000Z 35.828 -98.097 Oklahoma 5 3.1 mblg 1985-09-18T15:54:04.640Z 33.548 -97.051 central Texas 5 3.3 mblg 1984-02-03T04:38:27.110Z 34.657 -97.394 Oklahoma 5 3.2 mblg 1982-05-03T07:54:50.000Z 34.07 -96.38 Oklahoma 5 3 mblg 1981-07-11T21:09:22.540Z 34.884 -97.677 Oklahoma 5 3.5 mblg 1980-11-02T10:00:49.300Z 35.472 -97.777 Oklahoma 8 3 1980-06-09T22:37:09.900Z 35.513 -101.082 Texas Panhandle region 5 3.4 1979-09-13T00:49:19.800Z 35.219 -99.518 Oklahoma 5 3.4 1979-06-07T07:39:35.600Z 35.187 -99.812 Oklahoma 5 3 1976-04-19T04:42:42.200Z 36.134 -99.841 Oklahoma 5 3.5 1976-04-16T18:59:44.200Z 36.107 -99.875 Oklahoma 5 3.4 1975-11-29T14:29:40.900Z 34.521 -97.347 Oklahoma 5 3.5 lg 1975-10-12T02:58:11.200Z 34.816 -97.406 Oklahoma 20 3.2 lg 1975-09-13T01:25:02.800Z 34.139 -97.369 Oklahoma 5 3.4 lg 1974-02-15T13:33:49.200Z 36.5 -100.693 Oklahoma 24 4.5 mb Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 50 of 52
Preparer: D. Horne; Date: 02/15/21 Table 2 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Historical Earthquakes in Oklahoma Greater than 3.0 Magnitude (As of February 9, 2021)
Date and Time Latitude Longitude Epicenter Depth (km) Magnitude Mag. Type1 Notes:
Km - kilometers Source: USGS Earthquake Hazards Program https://earthquake.usgs.gov/earthquakes/map Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 51 of 52
Preparer: D. Horne; Date: 02/15/21 Table 2 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Historical Earthquakes in Oklahoma Greater than 3.0 Magnitude (As of February 9, 2021)
Date and Time Latitude Longitude Epicenter Depth (km) Magnitude Mag. Type1 1
Magnitude Type = The method or algorithm used to calculate the preferred magnitude for the event. See table below.
Magnitude Distance Magnitude Type Range Range Comments Based on the duration of shaking as measured by the time decay of the amplitude of the seismogram. Often used to compute magnitude from seismograms with Duration (Md or md) <4 0 - 400 km clipped waveforms due to limited dynamic recording range of analog instrumentation, which makes it impossible to measure peak amplitudes.
The original magnitude relationship defined by Richter and Gutenberg for local earthquakes in 1935. It is based on the maximum amplitude of a seismogram Local (ML Ml, or ml) 2 - 7.5 0 - 600 km recorded on a Wood-Anderson torsion seismograph. Although these instruments are no longer widely in use, ML values are calculated using modern instrumentation with appropriate adjustments.
Short-period surface wave 150 - 1100 A magnitude for regional earthquakes based on the amplitude of the Lg surface 3.5 - 7 (mb_Lg, mb_lg, or MLg) km waves as recorded on short-period instruments.
15 - 100 Based on the amplitude of P body-waves as recorded on short-period instruments Short-period body wave (mb) 4-7 degrees that are most sensitive to waves with a period of about 1 s.
Twenty-second surface wave 20 - 160 A magnitude for distant earthquakes based on the amplitude of Rayleigh surface 5 - 8.5 (Ms or Ms_20) degrees waves measured at a period near 20 sec.
Based on the scalar seismic-moment of the earthquake, as determined by a moment-tensor inversion. Mwb - Mw based on moment tensor inversion of long-Moment (generic notation Mw period (~10 - 100 s) body-waves (P- and SH). Mwc -- Moment magnitude derived or mw. Specific types denoted from a centroid moment tensor inversion of intermediate- and long-period body- and Mwb or mwb, Mwc or mwc, > 3.5 all surface-waves. Mwr -- Moment magnitude derived from a moment tensor inversion Mwr or mwr, and Mww or of complete waveforms at regional distances (less than ~13 degrees). Sometimes mww) called RMT. Mww -- Moment magnitude derived from a centroid moment tensor inversion of the W-phase.
Based on an estimate of moment calculated from the integral of the displacement of Moment (Mi or Mwp) 5-8 all the P wave recorded on broadband instruments.
Based on the seismic energy radiated by the earthquake as estimated by integration Energy (Me) > 3.5 all of digital waveforms Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 52 of 52
Preparer: A. Anstaett; Date: 02/23/21 Table 24 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Monitor Well Inventory 02W Wells Screened Interval Date TD BGS TOC Elev Well Site Area Formation (BGS)
Installed Top Bottom (ft.) (ft. AMSL) 02W01 BA#1 Transition Zone 7/15/2002 8.2 17.7 20 943.73 02W02 BA#1 Transition Zone 7/15/2002 7.7 17.2 20 941.35 02W03 BA#1 Alluvium by Escarpment 7/15/2002 5.2 14.7 17 940.22 02W04 BA#1 Alluvium by Escarpment 7/16/2002 6.2 15.7 18 939.27 02W05 BA#1 Alluvium w/ clays 7/16/2002 6.2 15.7 19 938.62 02W06 BA#1 Alluvium 7/17/2002 6.9 21.2 24 938.67 02W07 BA#1 Alluvium 7/17/2002 7.5 21.7 25 939.14 02W08 BA#1 Alluvium 7/17/2002 8.9 23.2 26 939.45 02W09 BA#1 Transition Zone 7/18/2002 7.9 22.2 25 948.44 02W10 BA#1 Transition Zone 7/18/2002 5.9 20.2 23 944.49 02W11 BA#1 Alluvium 7/18/2002 5.7 25.2 28 940.04 02W12 BA#1 Alluvium w/ clays 7/19/2002 5.4 24.9 26 940.21 02W13 BA#1 Transition Zone 7/19/2002 9.5 23.7 26 939.52 02W14 BA#1 Alluvium 7/19/2002 6.2 25.7 29 939.96 02W15 BA#1 Alluvium by Escarpment 7/22/2002 7.9 12.7 15 938.50 02W16 BA#1 Alluvium 7/22/2002 7.2 16.7 20 937.83 02W17 BA#1 Alluvium 7/22/2002 8.5 22.7 25 939.01 02W18 BA#1 Alluvium 7/23/2002 6.2 25.7 29 939.26 02W19 BA#1 Alluvium 7/23/2002 8.3 22.5 25 939.44 02W20 BA#1 Transition Zone by Escarpment 7/23/2002 8.5 22.7 26 950.81 02W21 BA#1 Alluvium 7/25/2002 10.5 24.7 27 939.19 02W22 BA#1 Alluvium 7/26/2002 6.2 16.2 19 937.73 02W23 BA#1 Alluvium 7/26/2002 7.9 22.2 25 937.86 02W24 BA#1 Alluvium 7/26/2002 5.2 24.7 28 939.24 02W25 BA#1 Sandstone B 7/29/2002 11.5 31.0 32 957.38 02W26 BA#1 Transition Zone 7/29/2002 9.9 24.2 28 951.85 02W27 BA#1 Sandstone B 7/30/2002 10.2 19.7 22 944.97 Cimarron Environmental Response Trust Facility Decommissioning Plan Rev 3 Page 1 of 2
Preparer: A. Anstaett; Date: 02/23/21 Table 24 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Monitor Well Inventory 02W Wells Screened Interval Date TD BGS TOC Elev Well Site Area Formation (BGS)
Installed Top Bottom (ft.) (ft. AMSL) 02W28 BA#1 Transition Zone 7/30/2002 11.5 23.0 26 946.41 02W30 BA#1 Sandstone B 7/31/2002 10.2 22.7 25 946.64 02W32 BA#1 Alluvium w/ clays 7/31/2002 6.4 20.7 24 939.70 02W33 BA#1 Alluvium by Escarpment 8/1/2002 5.2 14.7 17 937.87 02W34 BA#1 Alluvium 8/1/2002 5.2 24.7 28 938.59 02W35 BA#1 Alluvium 8/1/2002 6.2 25.7 29 938.45 02W36 BA#1 Alluvium 8/2/2002 5.2 24.7 27 938.68 02W37 BA#1 Alluvium 8/2/2002 5.2 24.7 27 938.87 02W38 BA#1 Alluvium 8/2/2002 5.7 26.2 26 940.08 02W39 BA#1 Transition Zone by Escarpment 8/2/2002 7.5 21.7 25 950.14 02W40 BA#1 Sandstone B 8/5/2002 15.5 29.7 32 954.62 02W41 BA#1 Sandstone B 8/5/2002 13.1 27.3 31 953.50 02W42 BA#1 Sandstone B 8/5/2002 7.2 27.7 31 951.21 02W43 BA#1 Alluvium 8/6/2002 8.2 27.2 30 939.06 02W44 BA#1 Alluvium 8/6/2002 6.7 26.2 29 939.00 02W45 BA#1 Alluvium 8/6/2002 8.2 27.7 31 939.22 02W47 BA#1 Sandstone B 8/7/2002 10.2 29.7 32 957.14 02W48 BA#1 Sandstone C 9/25/2002 34.6 54.5 60 938.99 02W50 BA#1 Sandstone B 8/8/2002 13.2 32.7 36 961.14 02W51 BA#1 Sandstone B 8/9/2002 9.2 33.7 37 962.18 02W52 BA#1 Sandstone B 8/12/2002 13.7 33.5 37 960.86 02W53 BA#1 Sandstone B 8/16/2002 5.2 19.7 23 943.76 02W62 BA#1 Alluvium 9/25/2002 5.5 25.0 28 938.53 Cimarron Environmental Response Trust Facility Decommissioning Plan Rev 3 Page 2 of 2
Preparer: A. Anstaett; Date: 02/23/21 Table 25 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Monitor Well Inventory 1300 Series Wells Screened Interval Date TD BGS TOC Elev Well Site Area Formation (BGS)
Installed Top Bottom (ft.) (ft. AMSL) 1311 SW of UPond 1 Sandstone A 2/21/1985 25.00 40.00 42.70 996.10 1312 W of UPond 1 Sandstone A 2/21/1985 21.00 36.00 39.20 992.66 1313 N of UPond 1 Sandstone A 2/25/1985 23.00 38.00 38.00 995.09 1314 S of BA #1 Trenches Sandstone B 2/13/1985 30.00 45.00 50.00 972.01 1315R N of BA#1 Trenches Sandstone B 7/25/2002 10.50 24.70 25.00 949.05 1316R NW of BA#1 Trenches Sandstone B 7/30/2002 10.20 24.70 25.00 946.45 1319B1 E of U Building Sandstone B 3/25/2003 65.00 79.50 80.00 1009.65 1319B3 E of U Building Sandstone B 4/1/2003 65.00 79.50 80.00 1011.22 1319B4 E of U Building Sandstone B 7/19/2003 65.00 79.50 80.00 1009.46 1320 W of UPond #2 Sandstone A 1/20/1989 28.50 38.50 41.30 1001.74 1321 W of UPond #2 Sandstone C 1/25/1989 111.50 121.60 124.40 1001.73 1324 E of BA #4 Sandstone A 2/8/1989 25.00 35.00 35.00 997.63 1331 NW of BA #2 Sandstone A 3/11/1989 12.20 22.20 25.00 978.34 1335A W of BA #4 Sandstone A 5/21/1996 43.40 998.70 1336A N of UPond #2 Sandstone A 5/18/1994 18.00 28.00 31.00 988.29 1337 NE of UPond #2 Sandstone A 2/12/1997 24.00 34.00 34.50 994.45 1338 NE of UPond #2 Sandstone B 2/12/1997 49.00 59.00 59.50 994.24 1340 NE of UPond #1 Sandstone A 2/16/1997 20.00 30.00 30.50 984.83 1341 NE of UPond #1 Sandstone B 2/16/1997 50.00 60.00 60.50 984.78 1343 Center near River Alluvium 9/29/1997 8.50 23.50 24.50 941.58 1344 East near River Alluvium 9/29/1997 8.30 23.30 24.30 937.90 1345 N of UPond #1 Sandstone B 4/8/2003 45.00 59.50 60.00 988.97 1346 N of UPond #2 Sandstone B 4/9/2003 45.00 59.50 60.00 991.50 1347 N of UPond #2 Sandstone A 4/9/2003 24.50 39.50 40.00 996.33 1348 S of 1206 Drainage Sandstone A 4/10/2003 15.00 34.50 35.00 999.54 1350 E of 1206 Drainage Sandstone A 4/11/2003 10.00 19.50 20.00 992.91 1351 E of 1206 Drainage Sandstone A 4/11/2003 5.00 14.50 15.00 982.44 Cimarron Environmental Response Trust Facility Decommissioning Plan Rev 3 Page 1 of 3
Preparer: A. Anstaett; Date: 02/23/21 Table 25 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Monitor Well Inventory 1300 Series Wells Screened Interval Date TD BGS TOC Elev Well Site Area Formation (BGS)
Installed Top Bottom (ft.) (ft. AMSL) 1352 E of 1206 Drainage Sandstone A 4/11/2003 12.00 21.50 22.00 985.60 1354 E of 1206 Drainage Sandstone A 7/8/2003 15.50 30.50 30.50 989.34 1355 E of 1206 Drainage Sandstone A 7/8/2003 23.50 38.00 38.50 995.92 1356 E of 1206 Drainage Sandstone A 7/7/2003 10.00 19.50 20.00 985.21 1357 E of 1206 Drainage Sandstone A 7/22/2003 12.25 26.75 27.25 990.53 1358 E of 1206 Drainage Sandstone A 7/22/2003 9.00 23.50 24.00 989.60 1359 E of 1206 Drainage Sandstone A 10/16/2003 7.00 17.00 17.00 984.05 1360 E of 1206 Drainage Sandstone A 10/16/2003 8.00 18.00 18.40 985.20 1361 North of BA #1 Alluvium 9/27/2012 7.00 29.50 29.50 940.28 1362 North of BA #1 Alluvium 5/14/2013 7.50 27.50 27.90 939.95 1363 North of BA #1 Alluvium 5/13/2013 3.40 28.40 28.90 939.72 1364 North of BA #1 Alluvium 5/13/2013 7.20 27.20 27.70 939.47 1365 North of BA #1 Alluvium 5/13/2013 8.30 28.30 28.80 939.66 1366 North of BA #1 Alluvium 5/13/2013 3.00 28.00 28.50 940.30 1367 North of BA #1 Alluvium 12/9/2014 7.85 27.85 28.35 939.26 1368 North of BA #1 Alluvium 12/9/2014 9.00 29.00 30.50 940.15 1369 North of BA #1 Alluvium 12/10/2014 10.00 30.00 30.50 939.98 1370 North of BA #1 Alluvium 12/10/2014 6.75 26.75 28.50 939.20 1371 North of BA #1 Alluvium 12/9/2014 10.50 25.50 26.00 935.32 1372 North of BA #1 Alluvium 12/9/2014 5.70 25.70 27.50 937.52 1373 North of BA #1 Alluvium 12/9/2014 9.00 24.00 24.50 935.52 1377 NE of BA #2 Sandstone A 11/7/2014 16.72 26.72 30.00 988.71 1378 NNE of BA #2 Sandstone A 11/7/2014 9.25 19.25 23.00 979.24 1379 N of BA #2 Sandstone A 11/7/2014 9.97 19.97 22.00 981.16 1381 W of UPond #2 Sandstone A 10/28/2014 20.73 30.73 31.50 997.25 1382 W of UPond #2 Sandstone B 10/28/2014 54.35 67.60 65.00 997.40 1383 E of UPond #2 Sandstone A 10/29/2014 36.20 46.20 49.00 1002.26 Cimarron Environmental Response Trust Facility Decommissioning Plan Rev 3 Page 2 of 3
Preparer: A. Anstaett; Date: 02/23/21 Table 25 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Monitor Well Inventory 1300 Series Wells Screened Interval Date TD BGS TOC Elev Well Site Area Formation (BGS)
Installed Top Bottom (ft.) (ft. AMSL) 1384 E of UPond #2 Sandstone B 10/29/2014 54.97 64.97 68.00 1002.07 1385 N of UPond #2 Sandstone A 10/31/2014 26.82 36.82 40.00 993.89 1386 N of UPond #2 Sandstone B 10/30/2014 50.70 65.70 70.00 993.83 1387 NE of UPond #2 Sandstone A 11/3/2014 9.45 19.45 22.00 981.48 1388 NE of UPond #2 Sandstone B 11/3/2014 31.83 46.83 50.00 981.11 1389 NE of UPond #2 Sandstone A 10/31/2014 19.45 29.45 33.00 987.94 1390 NE of UPond #2 Sandstone B 10/31/2014 41.06 56.56 60.00 987.84 1391 E of UPond #2 Sandstone B 11/3/2014 29.51 44.51 47.00 973.69 1392 Near 1336A Sandstone B 10/29/2014 54.25 64.25 69.00 987.43 1393 Near 1346 Sandstone A 10/29/2014 25.90 35.90 39.00 992.48 1394 Near 1347 Sandstone B 10/30/2014 52.25 67.25 70.00 997.21 1395 W of UP1 Sandstone A 11/18/2017 12.1 27.1 27.5 986.25 1396 N of UP1 Sandstone A 11/18/2017 9.5 24.5 24.9 987.17 1397 NNE of UP1 Sandstone A 11/19/2017 9.6 24.6 25.0 982.33 1398 E of UP1 Sandstone A 11/19/2017 7.6 27.6 28.0 984.95 1399 SW of UP1 Sandstone A 11/18/2017 17.1 32.1 32.5 989.91 Cimarron Environmental Response Trust Facility Decommissioning Plan Rev 3 Page 3 of 3
Preparer: A. Anstaett; Date: 02/23/21 Table 26 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Monitor Well Inventory 1400 Series Wells Screened Interval Date TD BGS TOC Elev Well Site Area Formation (BGS)
Installed Top Bottom (ft.) (ft. AMSL) 1400 W of UP1 Sandstone A 11/18/2017 7.2 22.2 22.6 982.38 1401 In NW UP2 Sandstone A 11/16/2017 23.1 43.1 43.5 1002.16 1402 In NE UP2 Sandstone A 11/17/2017 19.6 39.6 40.0 1002.23 1403 E of UP2 Sandstone A 11/20/2017 10.6 30.6 31.0 986.84 1404 N end of GETRBA101 BA1 Transition Zone 11/14/2017 11.3 21.3 21.7 941.47 1405 Center of GETRBA101 BA1 Transition Zone 11/14/2017 11.2 26.2 26.6 944.43 1406 S end of GETRBA101 BA1 Transition Zone 11/15/2017 14.1 24.1 24.5 948.62 1407 Center of GWIBA101 Top of Sandstone B 11/15/2017 5.6 10.6 11.0 957.85 1408 N of GWIBA101 Top of Sandstone B 11/15/2017 5.3 10.3 10.7 957.23 1409 N of GWIBA101 Bottom of Sandstone B 11/15/2017 10.4 25.4 25.8 957.32 Cimarron Environmental Response Trust Facility Decommissioning Plan Rev 3 Page 1 of 1
Preparer: A. Anstaett; Date: 02/23/21 Table 27 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Monitor Well Inventory TSeries Wells Screened Interval Date TD BGS TOC Elev Well Site Area Formation (BGS)
Installed Top Bottom (ft.) (ft. AMSL)
T51 Western Alluvium Alluvium 4/1/2003 5.00 19.50 19.50 940.30 T52 Western Alluvium Alluvium 4/2/2003 16.50 26.50 27.00 938.98 T53 Western Alluvium Alluvium 4/2/2003 12.00 27.00 27.00 938.49 T54 Western Alluvium Alluvium 4/2/2003 6.00 15.50 16.00 940.11 T55 Western Alluvium Alluvium 4/2/2003 6.00 15.50 16.00 938.57 T56 Western Alluvium Alluvium 4/2/2003 5.00 14.50 15.00 937.76 T57 Western Alluvium Alluvium 4/2/2003 4.00 19.00 19.50 939.31 T58 Western Alluvium Alluvium 4/2/2003 5.00 19.50 20.00 939.88 T59 Western Alluvium Alluvium 4/3/2003 7.00 26.00 27.00 938.00 T60 Western Alluvium Alluvium 4/3/2003 7.00 26.50 27.00 937.84 T61 Western Alluvium Alluvium 4/3/2003 5.00 24.50 25.00 937.94 T62 Western Alluvium Alluvium 7/7/2003 4.80 19.30 19.80 941.16 T63 Western Alluvium Alluvium 7/7/2003 8.80 23.30 23.80 940.51 T64 Western Alluvium Alluvium 7/21/2003 7.50 17.00 17.50 943.54 T65 Western Alluvium Alluvium 7/22/2003 7.50 22.00 22.50 941.06 T66 Western Alluvium Alluvium 3/2/2004 10.00 29.50 30.00 940.03 T67 Western Alluvium Alluvium 3/2/2004 9.00 28.50 29.00 940.55 T68 Western Alluvium Alluvium 4/15/2004 7.30 27.30 27.80 939.92 T69 Western Alluvium Alluvium 4/16/2004 7.00 26.50 27.00 940.09 T70R Western Alluvium Alluvium 5/24/2004 8.00 27.50 28.00 940.98 T72 Western Alluvium Alluvium 5/24/2004 8.00 27.50 28.00 939.86 T73 Western Alluvium Alluvium 5/25/2004 8.50 28.50 28.50 939.56 T74 Western Alluvium Alluvium 5/25/2004 11.50 31.50 31.50 941.52 T75 Western Alluvium Alluvium 5/25/2004 8.00 28.00 939.73 T76 Western Alluvium Alluvium 5/26/2004 8.00 28.00 28.00 939.21 T77 Western Alluvium Alluvium 5/26/2004 8.50 28.50 28.50 938.92 Cimarron Environmental Response Trust Facility Decommissioning Plan Rev 3 Page 1 of 2
Preparer: A. Anstaett; Date: 02/23/21 Table 27 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Monitor Well Inventory TSeries Wells Screened Interval Date TD BGS TOC Elev Well Site Area Formation (BGS)
Installed Top Bottom (ft.) (ft. AMSL)
T78 Western Alluvium Alluvium 5/27/2004 8.00 28.00 28.00 939.22 T79 Western Alluvium Alluvium 5/27/2004 7.00 27.00 27.00 938.31 T81 Western Alluvium Alluvium 5/27/2004 8.00 28.00 28.00 939.59 T82 Western Alluvium Alluvium 5/28/2004 8.00 28.00 28.00 940.80 T83 Western Alluvium Alluvium 6/9/2005 6.00 26.00 26.00 939.51 T84 Western Alluvium Alluvium 4/11/2011 3.00 27.50 28.00 939.38 T85 Western Alluvium Alluvium 4/11/2011 6.00 31.00 31.50 939.37 T86 Western Alluvium Alluvium 4/11/2011 2.00 27.00 27.50 939.18 T87 Western Alluvium Alluvium 4/12/2011 4.00 29.00 29.50 938.81 T88 Western Alluvium Alluvium 4/12/2011 2.50 27.50 28.00 938.99 T89 Western Alluvium Alluvium 4/12/2011 6.50 31.50 32.00 939.12 T90 Western Alluvium Alluvium 4/12/2011 3.50 28.50 29.00 939.46 T91 Western Alluvium Alluvium 9/30/2012 5.00 27.00 27.50 938.07 T92R Western Alluvium Alluvium 12/5/2024 7.50 27.50 28.00 936.14 T93 Western Alluvium Alluvium 5/8/2013 3.80 28.80 29.30 938.91 T94 Western Alluvium Alluvium 5/8/2013 7.40 27.40 27.90 942.21 T95 Western Alluvium Alluvium 5/8/2013 6.90 26.90 27.40 939.18 T96 Western Alluvium Alluvium 5/8/2013 6.60 26.60 27.10 939.66 T97 Western Alluvium Alluvium 12/4/2014 8.10 28.10 29.50 941.55 T98 Western Alluvium Alluvium 12/4/2014 8.66 28.66 29.50 941.30 T99 Western Alluvium Alluvium 12/4/2014 7.25 27.25 30.00 941.23 T100 Western Alluvium Alluvium 12/8/2014 8.45 28.45 29.50 940.69 T101 Western Alluvium Alluvium 12/5/2014 6.33 26.33 28.50 940.69 T102 Western Alluvium Alluvium 12/5/2014 7.40 27.40 28.00 938.77 T103 Western Alluvium Alluvium 12/5/2014 6.63 26.63 28.00 939.52 Cimarron Environmental Response Trust Facility Decommissioning Plan Rev 3 Page 2 of 2
Preparer: A. Anstaett; Date: 02/23/21 Table 28 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Monitor Well Inventory TMWSeries Wells Screened Interval Date TD BGS TOC Elev Well Site Area Formation (BGS)
Installed Top Bottom (ft.) (ft. AMSL)
TMW01 BA#1 Sandstone B 8/13/1999 10.9 25.9 29 952.80 TMW02 BA#1 Sandstone B 8/17/1999 14.8 29.4 33 959.88 TMW05 BA#1 Transition Zone 8/9/1999 8.2 22.7 27 943.32 TMW06 BA#1 Transition Zone 8/17/1999 6.8 16.4 20 948.69 TMW07 BA#1 Transition Zone 8/26/1999 4.8 14.4 18 941.52 TMW08 BA#1 Sandstone B 8/26/1999 9.8 24.4 28 950.71 TMW09 BA#1 Transition Zone 8/30/1999 7.6 22.1 22 945.67 TMW13 BA#1 Alluvium 11/16/1999 8.5 18.5 21 939.97 TMW17 BA#1 Sandstone C 4/18/2000 36.0 46.0 49 948.78 TMW18 BA#1 Sandstone B 5/10/2000 11.0 18.0 20 941.34 TMW19 BA#1 Alluvium 4/17/2000 5.0 10.0 12 941.37 TMW20 BA#1 Sandstone B 5/5/2000 9.0 23.0 27 956.84 TMW21 BA#1 Sandstone B 5/9/2000 12.0 22.0 25 953.93 TMW23 BA#1 Sandstone C 5/17/2000 30.4 40.4 40 940.17 TMW24 BA#1 Alluvium 5/15/2000 15.5 25.5 29 939.09 TMW25 BA#1 Sandstone B 5/16/2000 9.0 23.5 27 954.44 Cimarron Environmental Response Trust Facility Decommissioning Plan Rev 3 Page 1 of 1
Preparer: A. Anstaett; Date: 02/23/21 Table 29 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Monitor Well Inventory Miscellaneous Wells Screened Interval Date TD BGS TOC Elev Well Site Area Formation (BGS)
Installed Top Bottom (ft.) (ft. AMSL)
GEWA01 Western Alluvium Alluvium 9/29/2012 4.5 27.0 27 944.08 MWWA03 Western Alluvium Transition Zone 12/15/2005 9.0 14.0 14 947.53 MWWA09 Western Alluvium Transition Zone 12/16/2005 7.5 12.5 12.5 947.70 TMPUP201 S of GWIUP201D? Sandstone A 11/20/2017 19.6 39.6 40 1002.40 TMPUP202 N of GWIUP201D? Sandstone A 11/17/2017 19.3 39.3 40 1002.52 TR01 UP1 Sandstone A 11/21/2017 19.8 29.8 30 987.15 TR02 UP1 Sandstone A 11/16/2017 15.1 25.1 25 997.68 TR03 UP1 Sandstone A 11/16/2017 16.4 26.4 26 986.56 TR04 UP2 Sandstone A 11/2/2017 20.5 30.5 31 1003.20 TR05 UP2 Sandstone A 11/6/2017 20.0 30.0 30 997.62 TR06 BA1 Sandstone B 10/13/2017 16.0 26.0 26 959.83 TR07 BA1 Sandstone B 10/10/2017 16.0 26.0 26 960.09 TR08 BA1 Transition Zone 10/20/2017 11.8 21.8 22 944.44 TR09 BA1 Transition Zone 10/20/2017 14.0 24.0 24 948.60 TR10 BA1 Transition Zone 10/20/2017 14.0 24.0 24 949.45 Cimarron Environmental Response Trust Facility Decommissioning Plan Rev 3 Page 1 of 1
Preparer: D. Horne; Date 09/28/21 Table 210 Revision 0 Reviewer: E. Dulle; Date 09/09/22 Burial Area #1 Groundwater Elevations December 2012 Through May 2018 Top of Casing Groundwater Elevation Feet Above Mean Sea Level (North American Vertical Datum 1988)
Elevation Well Feet Above December August 8, November 15, March 18, February 15, May 6, August 8, October 14, February 6, April 17, July 31, November 6, February 5, May 7, Mean Mean Sea Level 2012 2013 2013 2015 2016 2016 2016 2016 2017 2017 2017 2017 2018 2018 ALLUVIAL WELLS 02W03 940.22 927.80 930.97 928.93 928.53 931.27 932.72 928.42 927.14 928.72 930.20 927.71 928.96 929.54 929.72 929.3 02W04 939.27 926.99 930.85 928.01 927.56 930.35 932.17 927.88 927.55 927.83 929.57 927.49 928.51 928.29 928.76 928.7 02W05 938.62 926.97 931.37 928.00 927.53 930.31 932.13 927.88 927.52 927.82 929.56 927.52 928.82 928.29 928.71 928.7 02W06 938.67 926.95 930.85 927.99 927.48 930.27 932.04 927.87 927.53 927.82 929.55 927.52 928.80 928.25 928.67 928.7 02W07 939.14 926.96 930.89 927.97 927.49 930.33 932.08 927.87 927.53 927.84 929.59 927.50 928.82 928.29 928.74 928.7 02W08 939.45 926.92 931.14 927.97 927.48 930.37 932.11 927.85 927.51 927.82 929.65 927.43 928.80 928.28 928.73 928.7 02W11 940.04 926.82 931.04 927.91 927.45 930.53 932.01 927.74 927.43 927.76 929.88 927.33 928.71 928.31 928.89 928.7 02W12 940.21 926.83 931.12 927.84 927.42 930.61 932.10 927.73 927.46 927.79 929.98 927.37 928.76 928.37 928.99 928.7 02W14 939.96 926.85 930.89 927.88 927.47 930.33 931.94 927.76 927.46 927.76 929.67 927.36 928.70 928.23 928.70 928.6 02W15 938.50 928.00 930.85 928.03 927.56 930.36 932.25 927.91 927.55 927.85 929.53 927.50 928.86 928.35 928.72 928.8 02W16 937.83 927.00 930.84 928.03 927.51 930.29 932.10 927.90 927.54 927.83 929.51 927.57 928.83 928.23 928.65 928.7 02W17 939.01 926.97 930.80 927.99 927.46 930.19 932.01 927.86 927.54 927.80 929.48 927.53 928.82 928.21 928.61 928.7 02W18 939.26 926.84 930.78 927.89 927.39 930.15 931.76 927.74 927.78 927.72 929.52 927.37 928.63 928.13 928.58 928.6 02W19 939.44 926.92 930.81 927.96 927.46 930.18 931.94 927.82 927.50 927.68 929.51 927.45 928.74 928.22 928.64 928.6 02W21 939.19 926.96 930.72 927.97 927.45 930.05 931.88 928.41 926.51 927.77 929.33 927.49 928.78 928.11 928.44 928.6 02W22 937.73 927.00 930.80 928.02 927.51 929.46 932.08 927.89 927.54 928.80 929.43 927.61 928.86 926.45 928.62 928.6 02W23 937.86 926.99 930.78 928.01 927.46 930.15 932.01 927.89 927.53 927.81 928.41 927.54 928.85 928.26 928.56 928.6 02W24 939.24 926.94 930.34 927.93 927.43 930.12 931.89 927.83 927.49 927.78 929.43 927.44 928.75 928.16 928.54 928.6 02W32 939.70 926.94 930.98 928.00 927.54 930.50 932.22 927.87 927.53 927.88 929.80 927.48 928.85 928.42 928.96 928.8 02W33 937.87 927.01 930.82 928.06 927.55 930.31 932.17 927.96 927.60 927.87 929.52 927.62 928.88 928.27 928.66 928.7 02W34 938.59 926.95 930.10 927.96 927.43 929.99 931.79 927.84 927.54 927.75 929.30 927.49 928.70 928.07 928.43 928.5 02W35 938.45 926.89 930.64 927.87 927.38 929.93 931.64 927.75 927.50 927.71 929.29 927.40 928.61 928.05 928.37 928.5 02W36 938.68 926.93 930.70 927.92 927.42 930.01 931.75 927.78 927.52 927.74 929.34 927.41 928.68 928.07 928.44 928.5 02W37 938.87 926.85 930.68 927.82 927.35 929.97 931.58 927.69 927.47 927.67 929.37 927.37 928.55 928.02 928.40 928.5 02W38 940.08 926.81 930.84 927.86 927.37 930.24 931.79 927.70 927.42 927.69 929.63 927.32 928.63 928.16 928.63 928.6 02W43 939.06 926.84 930.64 927.79 927.34 929.89 931.49 927.66 927.41 927.67 929.33 927.29 928.51 928.00 928.35 928.4 02W44 939.00 926.79 930.70 927.79 927.32 930.00 931.57 927.65 927.35 927.65 929.44 927.26 928.52 928.03 928.40 928.5 02W45 939.22 926.86 930.63 927.81 927.34 929.88 931.51 927.69 927.45 927.69 929.31 927.32 928.55 928.00 928.33 928.4 02W62 938.53 926.88 930.63 928.14 927.37 929.90 931.66 927.77 927.47 927.70 929.26 927.38 928.63 928.02 928.35 928.5 1344 937.90 926.26 930.02 927.21 926.85 928.91 930.01 926.97 927.02 927.22 928.96 926.20 927.57 927.31 927.50 927.7 1361 940.28 926.69 930.63 927.69 927.23 929.83 931.28 927.53 927.34 927.57 929.39 927.16 928.37 927.94 928.28 928.4 1362 939.95 930.81 927.77 927.30 930.14 931.59 927.61 927.38 927.65 929.61 927.20 928.52 928.07 928.57 928.6 1363 939.72 930.52 927.68 927.27 929.69 931.22 927.56 927.38 927.60 929.26 928.55 928.36 927.87 928.17 928.5 1364 939.47 930.70 927.67 927.24 929.98 930.32 927.51 927.32 926.86 929.54 927.07 928.34 927.96 928.37 928.4 1365 939.66 930.53 927.65 927.22 929.71 931.14 927.49 927.35 927.56 929.34 927.11 928.28 927.84 928.16 928.4 1366 940.30 930.61 927.62 927.19 929.81 931.12 927.45 927.30 927.55 929.45 927.04 928.25 927.85 928.20 928.4 Cimarron Environmental Response Trust Facility Decommissioning Plan Rev 3 Page 1 of 3
Preparer: D. Horne; Date 09/28/21 Table 210 Revision 0 Reviewer: E. Dulle; Date 09/09/22 Burial Area #1 Groundwater Elevations December 2012 Through May 2018 Top of Casing Groundwater Elevation Feet Above Mean Sea Level (North American Vertical Datum 1988)
Elevation Well Feet Above December August 8, November 15, March 18, February 15, May 6, August 8, October 14, February 6, April 17, July 31, November 6, February 5, May 7, Mean Mean Sea Level 2012 2013 2013 2015 2016 2016 2016 2016 2017 2017 2017 2017 2018 2018 ALLUVIAL WELLS 1367 939.26 927.31 929.74 931.39 927.64 927.44 927.65 929.21 927.26 928.47 927.93 928.24 928.4 1368 940.15 927.19 929.31 930.80 927.42 927.36 927.54 929.03 927.07 928.12 927.68 927.90 928.1 1369 939.98 927.04 928.98 930.30 927.23 927.25 927.41 928.89 926.88 927.80 927.48 927.58 927.9 1370 939.20 927.08 929.53 930.74 927.29 927.20 927.46 929.35 927.03 928.00 927.69 928.00 928.1 1371 935.32 926.86 928.37 929.45 926.90 927.03 927.19 928.48 927.52 927.35 927.10 927.20 927.6 1372 937.52 926.77 927.55 928.91 926.71 926.95 927.08 928.20 926.37 927.03 926.88 926.89 927.2 1373 935.52 926.77 925.89 929.16 926.78 926.96 927.13 928.34 926.40 927.19 927.01 927.07 927.2 TMW13 939.97 926.96 930.92 928.03 927.52 930.43 932.19 927.90 927.52 927.85 929.67 927.48 928.81 928.36 928.86 928.7 TMW19 941.37 929.74 930.81 929.00 929.02 931.34 933.05 928.99 928.96 928.92 929.97 918.51 929.03 929.27 929.50 929.0 TMW24 939.09 926.67 930.42 927.58 927.17 929.54 930.96 927.44 927.29 927.53 929.18 918.42 928.16 927.74 928.07 927.6 TRANSITION ZONE WELLS 02W01 943.73 932.47 934.18 933.37 933.44 935.71 937.04 933.00 931.66 933.60 934.73 932.07 932.83 933.36 933.41 933.6 02W02 941.35 930.03 932.34 930.97 931.09 933.28 934.60 930.53 929.55 931.11 932.55 929.80 930.65 931.78 932.15 931.5 02W09 948.44 934.67 936.21 935.67 935.69 937.40 938.42 935.13 933.84 935.69 936.50 933.94 938.40 935.14 935.54 935.9 02W10 944.49 933.58 935.40 934.73 934.80 936.49 937.39 933.81 932.76 934.93 935.87 932.90 931.14 934.54 934.88 934.5 02W13 939.52 926.95 931.18 928.14 927.67 930.86 932.46 927.93 927.52 927.92 930.07 927.49 928.99 927.69 929.36 928.9 02W20 950.81 937.47 937.60 937.78 937.75 938.30 938.71 937.12 936.92 937.69 937.86 935.69 937.60 937.85 938.88 937.7 02W26 951.85 935.70 936.79 936.45 936.50 937.80 938.79 935.88 934.88 936.46 937.00 934.55 935.96 936.25 936.94 936.4 02W28 946.41 933.40 935.18 934.48 934.57 936.45 937.46 933.91 932.59 934.68 935.71 932.81 934.44 934.26 934.46 934.6 02W39 950.14 934.77 936.40 935.76 935.79 937.60 938.79 935.29 933.96 935.77 936.59 934.14 935.03 935.01 935.33 935.7 TMW05 943.32 932.00 934.10 933.27 933.51 935.16 935.93 932.30 931.01 933.50 934.62 931.20 933.24 933.70 934.04 933.4 TMW06 948.69 934.27 935.99 935.43 935.44 936.94 937.68 934.64 933.26 935.53 936.30 933.21 935.01 935.27 935.79 935.3 TMW07 941.52 931.34 933.11 932.41 932.57 934.27 935.18 931.57 930.46 932.60 933.77 930.73 932.62 933.12 933.42 932.7 TMW09 945.67 933.05 934.87 934.11 934.16 936.32 937.55 933.65 932.28 934.28 935.36 932.62 933.27 933.80 933.95 934.2 SANDSTONE B WELLS 02W25 957.38 945.88 948.26 947.82 945.43 951.27 951.69 948.51 946.87 946.59 950.13 946.28 940.01 941.23 941.13 946.5 02W27 944.97 931.66 933.68 932.37 932.21 934.97 936.62 932.18 930.89 932.44 933.62 931.41 932.13 932.69 932.57 932.8 02W30 946.64 934.11 937.15 935.15 934.83 938.20 939.74 934.91 933.01 935.10 936.53 933.73 933.80 934.84 934.64 935.4 02W40 954.62 938.93 939.93 939.61 939.13 940.71 941.50 939.37 938.74 939.26 939.72 938.79 939.21 940.26 940.57 939.7 02W41 953.50 937.41 938.28 937.99 937.85 939.40 940.33 937.77 937.19 938.03 938.50 936.80 937.64 938.51 938.70 938.2 02W42 951.21 936.82 941.46 938.96 937.70 942.86 943.91 937.06 934.94 937.91 941.34 935.64 935.34 937.21 936.28 938.4 02W47 957.14 944.58 941.00 940.58 939.91 941.74 942.48 940.39 939.73 940.14 940.99 939.70 939.89 940.96 941.24 941.0 02W50 961.14 940.17 941.49 941.10 940.38 942.09 942.73 940.91 940.29 940.61 940.91 940.30 940.44 941.24 941.83 941.0 02W51 962.18 950.54 953.13 952.43 950.63 953.53 954.18 952.18 951.11 950.78 952.68 950.68 951.67 951.07 951.30 951.8 02W52 960.86 939.54 940.74 940.34 939.75 941.40 942.11 940.25 939.61 939.96 940.28 939.66 940.05 941.23 941.44 940.4 02W53 943.76 931.73 933.84 932.42 932.26 935.11 936.79 932.28 930.95 932.48 933.65 931.46 932.43 932.77 932.66 932.9 Cimarron Environmental Response Trust Facility Decommissioning Plan Rev 3 Page 2 of 3
Preparer: D. Horne; Date 09/28/21 Table 210 Revision 0 Reviewer: E. Dulle; Date 09/09/22 Burial Area #1 Groundwater Elevations December 2012 Through May 2018 Top of Casing Groundwater Elevation Feet Above Mean Sea Level (North American Vertical Datum 1988)
Elevation Well Feet Above December August 8, November 15, March 18, February 15, May 6, August 8, October 14, February 6, April 17, July 31, November 6, February 5, May 7, Mean Mean Sea Level 2012 2013 2013 2015 2016 2016 2016 2016 2017 2017 2017 2017 2018 2018 SANDSTONE B WELLS 1314 972.01 943.10 944.80 944.61 943.25 945.41 945.71 944.45 943.62 943.81 943.74 943.61 943.49 944.37 944.39 944.2 1315R 949.05 933.88 936.05 934.94 934.95 937.55 939.05 934.62 933.12 935.02 936.05 933.61 934.02 934.16 934.35 935.1 1316R 946.45 N/A 935.72 933.45 932.85 937.27 939.14 933.38 931.65 933.23 934.95 932.33 933.23 933.71 933.35 934.2 TMW01 952.80 939.94 942.27 941.11 940.61 945.60 946.09 942.72 940.23 941.07 943.87 939.96 938.49 939.81 939.64 941.5 TMW02 959.88 939.98 941.30 941.02 940.03 941.98 942.68 940.77 940.12 940.47 940.88 940.08 939.94 941.35 941.62 940.9 TMW08 950.71 934.63 936.62 935.71 935.61 937.82 939.11 935.37 934.03 935.73 936.66 934.29 934.90 935.01 935.25 935.8 TMW18 941.34 927.56 930.83 928.69 928.19 931.28 933.02 928.12 927.25 928.39 929.90 927.44 928.53 929.21 929.49 929.1 TMW20 956.84 N/A 939.43 939.13 938.59 940.09 940.99 N/A N/A N/A N/A DRY DRY 939.55 939.96 939.7 TMW21 953.93 936.53 943.03 937.88 936.33 943.96 944.83 937.22 935.46 936.80 944.76 936.13 936.04 938.38 936.71 938.9 TMW25 954.44 937.22 937.81 937.87 937.66 938.83 939.63 937.22 936.55 937.69 938.04 935.93 937.46 938.01 938.71 937.8 MISCELLANEOUS WELLS TR06 959.83 938.27 940.22 941.45 940.0 TR07 960.09 939.14 941.01 941.41 940.5 TR08 944.44 933.16 934.09 934.24 933.8 TR09 948.60 933.17 934.10 934.20 933.8 TR10 949.45 933.09 934.05 934.16 933.8 Notes:
indicates monitor well not yet installed N/A no data recorded Cimarron Environmental Response Trust Facility Decommissioning Plan Rev 3 Page 3 of 3
Preparer: D. Horne; Date 09/28/21 Table 211 Revision 0 Reviewer: E. Dulle; Date 09/09/22 Sandstone A Groundwater Elevations December 2012 Through May 2018 Top of Casing Groundwater Elevation Feet Above Mean Sea Level (North American Vertical Datum 1988)
Elevation Well Feet Above December August 8, November 15, March 18, February 15, May 6, August 8, October 14, February 6, April 17, July 31, November 6, February 5, May 7, Mean Mean Sea Level 2012 2013 2013 2015 2016 2016 2016 2016 2017 2017 2017 2017 2018 2018 SANDSTONE A WELLS 1311 996.10 966.41 968.32 967.95 965.01 967.30 967.64 968.16 967.47 967.00 966.40 967.32 966.74 967.25 967.14 967.2 1312 992.66 964.75 966.12 966.17 963.39 965.26 965.45 966.08 965.66 965.34 964.76 965.44 965.01 965.31 966.63 965.3 1313 995.09 964.61 965.67 966.09 963.65 965.14 965.27 965.89 965.55 965.15 964.69 965.24 964.89 965.11 966.42 965.2 1319A1 1,010.13 971.12 DRY DRY DRY DRY DRY DRY DRY DRY DRY DRY DRY DRY DRY 971.1 1319A2 1,010.28 969.73 970.00 970.33 969.24 970.04 970.18 970.46 970.42 970.44 969.88 969.56 969.95 DRY DRY 970.0 1319A3 1,010.43 970.30 970.41 970.18 969.37 968.94 N/A 969.01 969.07 969.21 969.28 968.97 969.02 969.21 969.25 969.4 1320 1,001.74 968.85 971.06 970.64 967.09 969.79 969.98 970.49 969.92 969.62 968.74 966.83 969.04 969.30 968.62 969.3 1322 1,001.72 967.31 969.11 968.59 966.27 969.11 969.52 969.58 968.75 967.88 967.72 968.58 968.13 967.70 967.61 968.3 1324 997.63 969.82 971.94 971.57 968.17 970.58 971.13 971.10 970.63 970.41 969.68 970.27 969.82 969.72 969.48 970.4 1325 1,006.81 972.51 974.92 974.61 970.93 973.81 974.16 974.68 973.85 973.41 972.46 973.93 972.90 972.96 971.95 973.5 1326 1,009.05 970.44 971.32 971.56 969.81 971.48 971.68 971.94 971.50 971.43 970.85 971.33 970.94 971.21 970.97 971.2 1327B 1,008.90 966.91 967.35 967.35 965.15 967.52 967.84 967.86 967.14 966.83 966.35 966.82 966.38 966.28 966.24 966.9 1329 1,007.46 968.24 968.75 968.91 967.70 968.65 968.84 969.04 968.81 969.00 968.66 968.13 968.43 968.63 968.60 968.6 1330 997.87 967.77 968.96 969.67 967.70 970.62 971.73 969.67 968.64 969.97 970.65 968.94 968.48 969.79 970.52 969.4 1331 978.34 965.29 967.23 966.30 963.94 967.02 968.04 967.09 966.43 965.69 966.14 966.26 965.72 965.36 965.28 966.2 1333 990.15 967.34 969.77 968.51 967.11 969.60 971.19 969.66 968.63 967.75 967.55 968.65 967.80 967.58 967.55 968.6 1334 980.76 966.39 968.42 966.98 965.46 968.38 969.80 967.06 966.57 966.52 967.94 966.65 967.46 966.86 966.55 967.3 1335A 998.70 971.72 973.40 973.22 969.90 972.25 972.73 973.35 972.80 972.30 971.50 972.28 971.80 971.81 971.20 972.2 1336A 988.29 960.06 961.02 960.92 959.04 960.63 960.86 960.99 960.63 960.29 959.89 960.59 960.20 960.39 960.19 960.4 1337 994.45 966.30 968.98 968.10 964.87 967.88 968.24 968.63 967.66 966.84 966.30 967.75 967.09 967.36 966.74 967.4 1340 984.83 962.54 964.28 963.77 961.34 963.38 963.75 963.64 963.21 962.89 962.59 961.90 962.89 963.45 963.98 963.1 1347 996.33 967.12 969.38 968.88 964.22 967.83 968.18 969.48 968.64 967.76 966.72 968.04 967.38 967.43 965.22 967.8 1348 999.54 974.63 978.04 976.93 974.15 978.43 979.24 977.02 975.72 976.09 977.16 977.68 976.38 977.51 977.33 976.8 1349 994.03 971.05 974.30 972.52 970.30 974.67 976.99 973.38 972.10 971.71 972.73 972.51 972.06 972.44 971.84 972.8 1350 992.91 974.45 977.92 976.41 973.57 978.23 979.06 976.75 975.51 975.55 976.91 975.91 976.40 977.41 977.13 976.5 1351 982.44 969.95 971.39 970.72 969.37 971.24 972.22 970.92 970.47 970.24 970.53 970.39 970.90 969.88 970.64 970.6 1352 985.60 967.07 968.79 968.39 965.90 967.95 968.45 968.57 968.05 967.60 967.05 967.70 967.49 967.52 967.55 967.7 1353 997.98 985.80 988.04 988.05 986.87 989.13 989.28 985.37 985.13 987.70 988.77 986.85 988.27 988.35 987.77 987.5 1354 989.34 966.30 968.03 967.64 965.09 967.14 967.48 967.78 967.24 966.84 966.34 966.99 966.59 966.80 967.08 966.9 1355 995.92 968.54 970.94 970.29 966.75 969.72 970.44 971.15 970.16 969.12 968.39 969.84 969.01 969.07 968.95 969.5 1356 985.21 968.78 970.16 969.69 968.15 969.81 970.55 969.73 969.37 969.09 968.96 969.13 969.33 969.45 969.21 969.4 1357 990.53 969.63 971.93 971.16 968.28 971.04 972.07 971.95 970.97 970.20 969.67 970.83 970.27 970.34 970.21 970.6 1358 989.60 970.97 973.40 972.42 969.95 972.95 974.25 972.96 971.98 971.51 971.46 972.08 971.68 972.32 972.08 972.2 1359 984.05 971.30 973.08 972.25 970.66 973.30 974.15 972.51 971.87 971.74 972.47 971.91 972.22 972.64 972.60 972.3 1360 985.20 972.42 975.30 973.96 971.77 975.85 976.67 974.25 973.26 973.24 974.77 973.47 974.00 971.44 974.75 973.9 1374 1,010.82 DRY 968.48 968.61 968.75 968.41 968.56 967.17 968.31 967.91 DRY 968.04 968.3 Cimarron Environmental Response Trust Facility Decommissioning Plan Rev 3 Page 1 of 2
Preparer: D. Horne; Date 09/28/21 Table 211 Revision 0 Reviewer: E. Dulle; Date 09/09/22 Sandstone A Groundwater Elevations December 2012 Through May 2018 Top of Casing Groundwater Elevation Feet Above Mean Sea Level (North American Vertical Datum 1988)
Elevation Well Feet Above December August 8, November 15, March 18, February 15, May 6, August 8, October 14, February 6, April 17, July 31, November 6, February 5, May 7, Mean Mean Sea Level 2012 2013 2013 2015 2016 2016 2016 2016 2017 2017 2017 2017 2018 2018 SANDSTONE A WELLS 1375 1,010.73 968.32 968.82 969.02 969.31 969.27 969.43 996.13 971.57 968.96 969.10 969.00 972.0 1376 1,009.79 968.66 970.13 970.49 970.99 970.71 970.35 969.74 970.73 969.90 970.06 969.81 970.2 1377 988.71 963.41 965.80 966.53 966.43 965.88 965.19 964.97 965.59 965.02 964.79 964.53 965.4 1378 979.24 961.98 963.39 963.83 963.46 963.19 963.04 963.02 963.05 962.94 962.92 962.91 963.1 1379 981.16 963.31 965.91 966.95 965.70 964.95 964.58 964.51 964.96 964.78 964.67 964.48 965.0 1380 998.58 966.84 969.69 970.36 970.16 969.33 968.63 968.13 969.10 968.46 968.26 968.18 968.9 1381 997.25 970.60 974.30 975.00 974.50 973.76 973.07 972.80 973.90 973.55 973.28 973.14 973.5 1383 1,002.26 966.17 969.01 969.17 969.98 969.40 968.66 968.03 969.07 968.32 970.12 969.08 968.8 1385 993.89 963.72 966.24 966.33 967.26 966.47 965.71 964.91 966.45 965.54 966.44 965.29 965.9 1387 981.48 964.30 967.18 968.13 967.07 966.35 965.75 965.98 966.53 966.59 966.08 965.98 966.4 1389 987.94 963.90 967.19 967.77 967.87 966.79 965.80 965.15 967.14 966.22 966.04 965.56 966.4 1393 992.48 960.44 962.81 963.13 963.72 963.08 962.30 961.48 963.18 962.33 962.88 962.13 962.5 PILOT TEST WELLS 1395 986.25 964.80 965.20 965.99 965.0 1396 987.17 964.71 965.88 966.59 965.3 1397 982.33 962.73 967.15 965.59 964.9 1398 984.95 965.11 965.36 965.65 965.2 1399 989.91 966.15 966.83 966.91 966.5 1400 982.38 964.38 968.32 965.67 966.4 1401 1,002.16 967.16 969.92 967.86 968.5 1402 1,002.23 967.70 969.23 967.75 968.5 1403 986.84 968.11 969.00 967.96 968.6 MISCELLANEOUS WELLS TR01 987.15 952.85 975.15 966.34 964.0 TR02 997.68 975.03 975.60 976.38 975.3 TR03 986.56 963.28 975.82 966.38 969.6 TR05 997.62 968.52 971.27 969.14 969.9 Notes:
indicates monitor well not yet installed N/A no data recorded Cimarron Environmental Response Trust Facility Decommissioning Plan Rev 3 Page 2 of 2
Preparer: D. Horne; Date 09/28/21 Table 212 Revision 0 Reviewer: E. Dulle; Date 09/09/22 Western Alluvial Area and Sandstone B Groundwater Elevations December 2012 Through May 2018 Top of Casing Groundwater Elevation Feet Above Mean Sea Level (North American Vertical Datum 1988)
Elevation Well Feet Above December August 8, November 15, March 18, February 15, May 6, August 8, October 14, February 6, April 17, July 31, November February 5, May 7, Mean Mean Sea Level 2012 2013 2013 2015 2016 2016 2016 2016 2017 2017 2017 6, 2017 2018 2018 ALLUVIAL WELLS 1343 941.58 927.84 931.10 928.59 928.11 929.43 930.58 928.27 928.40 928.31 929.21 928.21 928.86 928.25 928.29 928.8 T51 940.30 928.75 931.63 929.71 929.12 930.18 931.18 929.40 929.33 929.12 930.00 929.44 929.55 929.04 929.00 929.7 T52 938.98 928.65 931.55 929.59 928.98 930.12 931.10 929.33 929.20 929.00 929.86 929.36 929.51 928.95 928.93 929.6 T53 938.49 928.51 931.45 929.46 928.55 930.17 931.13 929.20 929.00 928.89 929.71 929.27 929.53 928.88 928.88 929.5 T54 940.11 929.09 931.93 930.36 929.48 929.48 932.48 929.90 929.40 929.46 930.27 930.06 930.67 929.87 929.91 930.2 T55 938.57 928.86 931.75 930.09 929.25 931.21 932.40 928.46 929.12 929.22 930.07 929.66 930.55 929.67 929.77 930.0 T56 937.76 928.81 931.66 929.89 929.08 931.21 932.53 927.75 928.91 929.06 929.96 929.51 930.56 929.53 929.73 929.9 T57 939.31 929.21 932.28 930.51 929.63 931.49 932.60 930.23 929.59 929.56 930.35 930.31 930.63 929.90 929.93 930.4 T58 939.88 929.23 932.27 930.55 929.65 931.42 932.59 930.42 929.72 929.55 930.36 930.55 930.55 929.84 929.97 930.5 T59 938.00 928.41 931.43 929.43 928.73 930.34 931.34 929.18 928.89 928.83 929.61 929.30 929.70 928.96 928.95 929.5 T60 937.84 928.40 931.60 929.48 928.74 930.81 932.02 929.20 928.78 928.79 929.62 929.30 930.14 929.13 929.23 929.7 T61 937.94 928.17 931.59 929.24 928.51 931.07 932.56 929.03 928.54 928.64 929.43 929.04 930.35 928.99 929.28 929.6 T62 941.16 929.38 932.49 930.76 929.83 931.76 933.06 930.69 929.91 929.71 930.51 930.81 930.61 930.01 930.08 930.7 T63 940.51 929.28 932.30 930.63 929.74 931.51 932.69 930.50 929.80 929.63 930.41 930.64 930.81 929.90 929.98 930.6 T64 943.54 929.49 932.56 930.92 929.95 932.12 933.38 930.85 930.05 929.91 930.59 930.93 930.73 930.16 930.34 930.9 T65 941.06 N/A 932.40 930.69 929.76 931.61 932.80 930.65 929.89 929.70 930.44 930.76 930.55 929.91 930.06 930.7 T66 940.03 929.26 932.29 930.60 929.71 931.43 932.59 930.53 929.81 929.63 930.35 930.68 930.48 929.85 929.93 930.5 T67 940.55 929.29 932.36 930.65 929.74 931.45 932.66 930.61 929.84 929.63 930.40 930.65 930.50 929.88 929.95 930.5 T68 939.92 929.09 932.11 930.34 929.55 930.97 932.08 930.25 929.71 929.48 930.25 930.32 930.20 929.57 929.62 930.2 T69 940.09 929.13 932.14 930.40 929.59 931.08 932.26 930.35 929.71 929.48 930.27 930.44 930.33 929.69 929.73 930.3 T70R 940.98 929.36 932.43 930.74 929.83 931.56 932.77 930.72 929.96 929.73 930.40 930.84 930.57 929.95 929.53 930.6 T72 939.86 929.17 932.25 930.47 929.63 931.15 932.35 930.40 929.76 929.55 930.31 930.45 930.30 929.69 929.76 930.4 T73 939.56 929.24 932.26 930.61 929.68 931.26 932.38 930.53 929.85 929.65 930.36 930.66 930.38 929.74 929.76 930.5 T74 941.52 929.38 932.52 930.79 929.83 931.61 932.81 930.80 930.00 929.77 930.44 930.90 930.62 929.99 930.07 930.7 T75 939.73 929.17 932.18 930.46 929.61 931.12 932.23 930.08 929.80 929.53 930.31 930.48 930.31 929.69 929.73 930.3 T76 939.21 929.24 932.29 930.56 929.70 931.34 932.47 930.52 929.81 929.64 930.37 930.66 930.44 929.79 929.86 930.5 T77 938.92 929.12 932.18 930.38 929.57 930.98 932.12 930.29 929.74 929.52 930.27 930.38 930.22 929.59 929.62 930.3 T78 939.22 929.16 932.20 930.44 929.61 931.07 932.21 930.39 929.80 929.57 930.30 930.47 930.27 929.62 929.66 930.3 T79 938.31 929.02 932.00 930.21 929.36 930.68 931.82 930.07 929.68 929.41 930.21 930.12 930.03 929.39 929.43 930.1 T81 939.59 929.13 932.10 930.38 929.57 930.95 932.10 930.29 929.75 929.52 930.30 930.37 930.21 929.56 929.59 930.3 T82 940.80 928.97 931.95 930.09 929.39 930.47 931.62 931.77 929.61 929.35 930.19 929.92 929.87 929.30 929.29 930.1 T83 939.51 929.02 931.95 930.18 929.46 930.61 931.75 929.80 929.67 929.41 930.23 930.01 929.96 929.36 929.39 930.1 T84 939.38 928.97 931.93 930.13 929.37 930.64 931.62 929.92 929.55 929.38 930.14 929.98 929.97 929.36 929.39 930.0 T85 939.37 928.88 931.83 930.02 929.28 930.67 931.61 929.81 929.38 929.23 930.05 929.86 930.00 929.37 929.34 929.9 T86 939.18 928.77 931.74 929.94 929.17 930.86 931.87 929.63 929.17 929.03 929.96 929.74 930.15 929.33 929.42 929.9 T87 938.81 928.61 931.63 929.80 928.99 930.93 932.05 929.40 928.94 928.93 929.81 929.51 930.23 929.35 929.43 929.8 Cimarron Environmental Response Trust Facility Decommissioning Plan Rev 3 Page 1 of 3
Preparer: D. Horne; Date 09/28/21 Table 212 Revision 0 Reviewer: E. Dulle; Date 09/09/22 Western Alluvial Area and Sandstone B Groundwater Elevations December 2012 Through May 2018 Top of Casing Groundwater Elevation Feet Above Mean Sea Level (North American Vertical Datum 1988)
Elevation Well Feet Above December August 8, November 15, March 18, February 15, May 6, August 8, October 14, February 6, April 17, July 31, November February 5, May 7, Mean Mean Sea Level 2012 2013 2013 2015 2016 2016 2016 2016 2017 2017 2017 6, 2017 2018 2018 ALLUVIAL WELLS T88 938.99 928.35 931.55 929.53 928.72 931.04 932.30 929.10 928.67 928.72 929.59 929.24 930.32 929.21 929.37 929.7 T89 939.12 928.24 931.10 929.07 928.51 929.72 930.73 928.73 928.76 928.66 929.48 928.75 929.17 928.59 928.56 929.2 T90 939.46 928.38 931.16 929.19 928.62 929.75 930.67 928.85 928.90 928.76 929.63 928.84 929.17 928.64 928.60 929.2 T91 938.07 928.23 930.98 928.97 928.50 929.85 930.42 927.63 928.78 928.65 929.46 928.59 928.96 928.48 928.43 929.0 T92R 936.12 928.17 930.95 928.94 925.69 926.82 927.81 925.85 925.98 925.87 926.72 925.87 926.29 925.76 925.71 926.9 T93 938.91 931.10 928.93 928.38 929.92 931.09 928.66 928.57 928.51 929.36 928.67 929.36 928.55 928.60 929.2 T94 942.21 930.70 928.70 928.26 929.26 930.23 928.31 928.53 928.46 929.26 928.64 928.74 928.30 928.27 928.9 T95 939.18 931.28 929.36 928.82 929.86 930.81 928.98 929.08 928.89 929.75 929.04 929.27 928.77 928.76 929.4 T96 939.66 931.71 929.83 929.18 930.32 931.35 929.56 929.38 929.17 930.01 929.61 929.69 929.11 929.11 929.8 T97 941.55 928.75 929.60 930.51 928.78 929.01 928.81 929.71 928.75 929.00 928.67 928.57 929.1 T98 941.30 928.66 929.46 930.33 928.61 928.92 928.78 929.65 928.29 928.84 928.58 928.50 929.0 T99 941.23 928.33 929.08 929.85 928.25 928.68 928.63 929.38 928.23 928.43 928.27 928.26 928.7 T100 940.69 928.22 928.22 929.60 927.05 928.40 928.43 929.09 927.99 928.35 928.19 928.10 928.3 T101 940.69 928.04 929.02 929.97 927.99 928.32 928.27 929.09 927.94 928.49 928.13 928.08 928.5 T102 938.77 928.30 930.22 931.59 928.69 928.53 928.47 929.35 928.72 929.61 928.63 928.74 929.2 T103 939.52 928.31 931.68 933.66 928.86 928.34 928.47 929.55 928.75 930.63 929.00 929.44 929.7 SANDSTONE B WELLS 1319B1 1,009.65 946.05 948.94 948.11 946.31 949.23 949.55 947.62 946.44 947.08 947.71 946.85 947.19 948.25 948.41 947.7 1319B2 1,011.37 947.09 949.92 949.16 947.38 950.27 950.59 948.71 947.55 948.17 948.81 948.07 948.26 949.30 949.46 948.8 1319B3 1,011.22 946.20 949.06 948.24 946.47 949.39 949.72 947.82 946.60 947.22 947.80 947.31 947.31 946.61 948.54 947.7 1319B4 1,009.46 945.48 948.41 947.58 945.78 948.50 949.03 947.11 945.89 946.53 947.17 946.65 946.62 947.55 947.85 947.2 1319B5 1,010.48 943.76 946.68 945.82 944.08 946.99 947.33 945.37 944.12 944.78 945.43 944.92 944.84 947.58 946.12 945.6 1338 994.24 943.21 945.06 945.19 943.13 944.99 944.72 944.27 943.49 943.71 943.67 943.78 943.99 944.53 944.26 944.1 1341 984.78 936.60 939.23 938.52 936.91 939.13 939.51 937.68 936.70 937.38 937.66 938.77 937.33 938.06 938.07 938.0 1345 988.97 933.41 936.33 935.29 933.85 936.17 936.85 934.66 933.66 934.21 934.61 934.24 934.31 934.89 934.92 934.8 1346 991.50 937.28 939.10 938.97 937.48 939.05 939.05 938.38 937.77 938.00 937.82 938.28 938.00 938.58 938.40 938.3 1382 997.40 937.74 939.30 939.40 938.76 938.04 938.10 938.05 938.60 938.19 938.60 938.60 938.5 1384 1,002.07 943.75 945.67 945.47 945.03 944.14 944.32 944.35 944.57 944.71 945.24 944.99 944.7 1386 993.83 939.09 940.58 940.45 939.89 939.28 939.58 939.38 939.63 939.55 940.13 939.93 939.8 1388 981.11 945.29 947.36 947.12 946.55 945.71 945.88 946.06 945.93 946.42 946.89 946.71 946.4 1390 987.84 941.55 943.16 943.75 942.47 941.82 942.08 941.99 942.04 942.14 942.73 942.60 942.4 1391 973.69 950.26 952.97 952.79 951.88 950.92 950.99 951.78 951.07 952.34 952.54 952.52 951.8 1392 987.43 936.07 937.58 937.72 936.82 936.22 936.43 936.38 936.67 936.51 936.98 936.82 936.7 1394 997.21 940.17 941.76 941.61 941.12 940.41 940.68 940.51 940.80 940.71 941.29 941.11 940.9 Cimarron Environmental Response Trust Facility Decommissioning Plan Rev 3 Page 2 of 3
Preparer: D. Horne; Date 09/28/21 Table 212 Revision 0 Reviewer: E. Dulle; Date 09/09/22 Western Alluvial Area and Sandstone B Groundwater Elevations December 2012 Through May 2018 Top of Casing Groundwater Elevation Feet Above Mean Sea Level (North American Vertical Datum 1988)
Elevation Well Feet Above December August 8, November 15, March 18, February 15, May 6, August 8, October 14, February 6, April 17, July 31, November February 5, May 7, Mean Mean Sea Level 2012 2013 2013 2015 2016 2016 2016 2016 2017 2017 2017 6, 2017 2018 2018 TRANSITION ZONE WELLS MWWA03 947.53 930.94 934.31 932.45 931.50 938.00 938.64 932.03 932.03 931.28 934.24 931.93 932.08 932.70 934.03 933.3 MWWA09 947.70 933.11 938.07 935.45 933.74 942.88 942.49 934.65 934.65 934.66 941.08 934.15 934.69 939.43 939.37 937.0 Notes:
indicates monitor well not yet installed N/A no data recorded Cimarron Environmental Response Trust Facility Decommissioning Plan Rev 3 Page 3 of 3
Preparer: Ashley Anstaett; Date: 10/13/21 Table 3 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Representative Nitrate Concentrations Western Area Well Representative Monitor Max Value 95% UCL Average Concentration Well (mg/L) (mg/L)
(mg/L) (mg/L) 1343 6.89 6.45 4.62 6.45 1311 44 -- -- 21.6 1312 555 380 -- 380 1313 464 240 -- 240 1319A-2 33 -- 31.9 31.9 1319B-1 85.5 57.4 -- 57.4 1319B-2 2.68 2.70 -- 2.68 1319B-3 90.1 75.8 -- 75.8 1319B-4 3.77 3.70 -- 3.70 1319B-5 13.1 11.3 -- 11.3 1320 18.6 19.14 -- 18.6 1322 19.4 -- 19.4 19.4 1324 6.45 -- 3.76 3.76 1325 20.5 -- 19.7 19.7 1326 33.8 -- 27.1 27.1 1327B 38.7 -- 36.4 36.4 1329 33.0 -- 31.4 31.4 1330 16.0 -- 13.1 13.1 1331 10.1 -- 10.1 10.1 1333 4.19 -- 4.19 4.19 1334 6.81 -- 5.83 5.83 1335A 2.77 -- 2.50 2.50 1336A 414 377 -- 377 1337 63.7 53.34 -- 53.34 1338 10.50 -- 7.01 7.01 1340 66.5 53.8 -- 53.8 1341 29.3 28.6 -- 28.6 1345 7.80 7.66 -- 7.66 1346 499 407 -- 407 1347 95.9 65.0 -- 65.0 1348 70.7 11.6 -- 11.6 1349 21.5 20.2 -- 20.2 1350 15.6 -- 11.7 11.7 1351 87.4 76.1 -- 76.1 1352 66.3 55.0 -- 55.0 1353 7.75 8.789 -- 7.75 1354 190 142 -- 142 1355 14.5 -- 14.0 14.0 1356 18.8 14.8 -- 14.8 1357 55.4 52.0 -- 52.0 Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 1 of 4
Preparer: Ashley Anstaett; Date: 10/13/21 Table 3 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Representative Nitrate Concentrations Western Area Well Representative Monitor Max Value 95% UCL Average Concentration Well (mg/L) (mg/L)
(mg/L) (mg/L) 1358 20.6 -- 16.9 16.9 1359 23.1 -- 21.7 21.7 1360 16.4 -- 13.4 13.4 1375 37.9 -- 34.3 34.3 1376 17.7 -- 17.0 17.0 1377 8.73 -- 8.73 8.73 1378 8.55 -- 8.55 8.55 1379 7.37 -- 7.37 7.37 1380 17.1 -- 17.1 17.1 1381 925 839 -- 839 1382 3.06 -- 2.44 2.44 1383 308.0 -- 226.7 226.7 1384 0.505 -- 0.400 0.400 1385 6860 1006 -- 1006 1386 17.6 -- 15.4 15.4 1387 158.0 60.2 -- 60.2 1388 10.4 -- 9.15 9.15 1389 31.6 -- 21.7 21.7 1390 7.03 -- 4.89 4.89 1391 5.25 -- 4.09 4.09 1392 1.56 -- 1.11 1.11 1393 505 275 -- 275 1394 5.14 -- 4.25 4.25 1395 1.6 -- 1.6 1.6 1396 17.5 -- 17.5 17.5 1397 202 -- 202 202 1398 0.748 -- 0.748 0.748 1399 69.5 -- 69.5 69.5 1400 104 -- 104 104 1401 802 -- 802 802 1402 217 -- 217 217 1403 5.83 -- 5.83 5.83 MWWA-03 84.6 42.4 -- 42.4 MWWA-09 56.0 43.1 -- 43.1 T-51 16.0 14.7 -- 14.7 T-52 58.0 56.7 -- 56.7 T-53 47.7 47.7 -- 47.7 T-54 431 239 -- 239 T-55 281 236 -- 236 T-56 26.4 24.9 -- 24.9 Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 2 of 4
Preparer: Ashley Anstaett; Date: 10/13/21 Table 3 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Representative Nitrate Concentrations Western Area Well Representative Monitor Max Value 95% UCL Average Concentration Well (mg/L) (mg/L)
(mg/L) (mg/L)
T-57 136 112 -- 112 T-58 61.0 44.9 -- 44.9 T-59 150 112 -- 112 T-60 101.0 97.4 -- 97.4 T-61 56.8 34.9 -- 34.9 T-62 153.0 88.0 -- 88.0 T-63 150 139 -- 139 T-64 20.7 14.0 -- 14.0 T-65 55.5 56.7 -- 55.5 T-66 40.3 40.73 -- 40.3 T-67 29.4 27.0 -- 27.0 T-68 21.4 21.2 -- 21.2 T-69 140.0 72.1 -- 72.1 T-70R 6.92 4.41 -- 4.41 T-72 25.8 27.82 -- 25.8 T-73 0.034 -- 0.028 0.028 T-74 1.57 -- 1.47 1.47 T-75 1.97 -- 1.66 1.66 T-76 47.8 30.4 -- 30.4 T-77 5.50 3.07 -- 3.07 T-78 0.251 -- 0.164 0.164 T-79 3.56 1.26 -- 1.26 T-81 0.074 -- 0.071 0.071 T-82 0.086 0.068 -- 0.068 T-83 0.063 -- 0.054 0.054 T-84 51.0 46.5 -- 46.5 T-85 123 100 -- 100 T-86 58.0 43.9 -- 43.9 T-87 110 108 -- 108 T-88 130.0 75.4 -- 75.4 T-89 72.5 68.5 -- 68.5 T-90 34.5 35.17 -- 34.5 T-91 38.9 30.9 -- 30.9 T-92R 40.5 -- 36.3 36.3 T-93 58.5 54.5 -- 54.5 T-94 18.9 18.7 -- 18.7 T-95 49.0 49.2 -- 49.0 T-96 50.5 31.6 -- 31.6 T-97 14.0 10.2 -- 10.2 T-98 2.000 -- 0.862 0.862 Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 3 of 4
Preparer: Ashley Anstaett; Date: 10/13/21 Table 3 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Representative Nitrate Concentrations Western Area Well Representative Monitor Max Value 95% UCL Average Concentration Well (mg/L) (mg/L)
(mg/L) (mg/L)
T-99 46.6 37.4 -- 37.4 T-100 51.6 39.5 -- 39.5 T-101 36.5 -- 27.2 27.2 T-102 24.4 -- 22.3 22.3 T-103 8.64 -- 4.02 4.02 Notes:
mg/L milligrams per liter UCL Upper Confidence Limit Concentrations calculated for wells 1395 through 1403 used data available from Fourth Quarter 2017.
Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 4 of 4
Preparer: A. Anstaett; Date: 10/14/21 Table 3 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Representative Fluoride Concentrations Western Area Well Representative Monitor Max Value 95% UCL Average Concentration Well (mg/L) (mg/L)
(mg/L) (mg/L) 1311 0.561 -- 0.477 0.477 1312 22.400 10.460 -- 10.460 1313 148 48.9 -- 48.900 1319A-2 0.366 -- 0.3415 0.342 1319B-1 0.348 0.337 -- 0.337 1319B-2 0.455 0.447 -- 0.447 1319B-3 0.314 0.307 -- 0.307 1319B-4 0.424 0.412 -- 0.412 1319B-5 0.430 0.403 -- 0.403 1320 0.643 -- 0.5750 0.575 1322 0.549 -- 0.5490 0.549 1324 0.530 -- 0.5153 0.515 1325 0.522 -- 0.5055 0.506 1326 0.322 -- 0.3130 0.313 1327B 0.348 -- 0.3355 0.336 1329 0.480 -- 0.4125 0.413 1330 0.629 -- 0.6095 0.610 1331 0.557 -- 0.5570 0.557 1333 0.705 -- 0.7050 0.705 1334 0.602 -- 0.5533 0.553 1335A 0.386 -- 0.3577 0.358 1336A 9.890 9.627 -- 9.627 1337 14.400 14.16 -- 14.160 1338 0.879 0.878 -- 0.878 1340 20.900 18 -- 18.000 1341 0.687 0.645 -- 0.645 1343 0.406 -- 0.3950 0.395 1345 0.530 0.534 -- 0.530 1346 11.400 9.641 -- 9.641 1347 4.950 4.753 -- 4.753 1348 9.770 8.858 -- 8.858 1349 1.030 1.016 -- 1.016 1350 1.590 -- 1.5900 1.590 1351 1.280 1.063 -- 1.063 1352 0.589 0.528 -- 0.528 1353 1.720 1.795 -- 1.720 1354 0.520 0.499 -- 0.499 1355 0.439 -- 0.4390 0.439 1356 0.981 0.739 -- 0.739 1357 0.557 -- 0.5555 0.556 Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 1 of 4
Preparer: A. Anstaett; Date: 10/14/21 Table 3 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Representative Fluoride Concentrations Western Area Well Representative Monitor Max Value 95% UCL Average Concentration Well (mg/L) (mg/L)
(mg/L) (mg/L) 1358 0.335 -- 0.3350 0.335 1359 0.973 -- 0.9730 0.973 1360 1.600 -- 1.6000 1.600 1375 0.386 -- 0.3710 0.371 1376 0.713 -- 0.5640 0.564 1377 0.464 -- 0.4640 0.464 1378 0.281 -- 0.2810 0.281 1379 0.754 -- 0.7250 0.725 1380 0.505 -- 0.5050 0.505 1381 2.120 -- 1.648 1.648 1382 0.507 -- 0.4817 0.482 1383 19.400 -- 11.7633 11.763 1384 0.455 -- 0.431 0.431 1385 10.60 7.65 -- 7.65 1386 0.453 -- 0.437 0.437 1387 9.80 8.21 -- 8.21 1388 2.16 -- 1.93 1.93 1389 0.211 -- 0.175 0.175 1390 1.07 -- 0.961 0.961 1391 3.430 -- 2.853 2.853 1392 0.698 -- 0.686 0.686 1393 21.30 11.89 -- 11.89 1394 0.399 -- 0.382 0.382 1395 0.405 -- 0.405 0.405 1396 0.466 -- 0.466 0.466 1397 12.50 -- 12.50 12.50 1398 0.317 -- 0.317 0.317 1399 0.448 -- 0.448 0.448 1400 9.73 -- 9.73 9.73 1401 7.03 -- 7.03 7.03 1402 45 -- 45 45 1403 32.3 -- 32.3 32.3 MWWA-03 16.90 9.66 -- 9.66 MWWA-09 4.50 3.97 -- 3.97 T-51 0.452 -- 0.4385 0.439 T-52 1.640 -- 1.5400 1.54 T-53 0.934 -- 0.8850 0.885 T-54 2.44 2.23 -- 2.23 T-55 2.41 2.19 -- 2.19 T-56 1.02 0.984 -- 0.984 Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 2 of 4
Preparer: A. Anstaett; Date: 10/14/21 Table 3 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Representative Fluoride Concentrations Western Area Well Representative Monitor Max Value 95% UCL Average Concentration Well (mg/L) (mg/L)
(mg/L) (mg/L)
T-57 5.03 4.64 -- 4.64 T-58 0.887 0.861 -- 0.861 T-59 0.405 -- 0.328 0.328 T-60 0.496 -- 0.485 0.485 T-61 0.498 -- 0.456 0.456 T-62 4.41 3.75 -- 3.75 T-63 5.74 5.28 -- 5.28 T-64 3.45 2.51 -- 2.51 T-65 3.29 3.22 -- 3.22 T-66 1.85 1.84 -- 1.84 T-67 2.70 2.77 -- 2.70 T-68 1.76 1.72 -- 1.72 T-69 1.29 1.24 -- 1.24 T-70R 1.44 1.33 -- 1.33 T-72 1.42 1.40 -- 1.40 T-73 0.320 -- 0.320 0.320 T-74 0.329 -- 0.329 0.329 T-75 0.895 -- 0.844 0.844 T-76 3.01 2.93 -- 2.93 T-77 1.22 1.09 -- 1.09 T-78 0.365 -- 0.365 0.365 T-79 1.00 0.898 -- 0.898 T-81 0.415 -- 0.415 0.415 T-82 0.585 0.493 -- 0.493 T-83 0.397 -- 0.397 0.397 T-84 0.800 -- 0.790 0.790 T-85 1.49 -- 1.45 1.45 T-86 3.17 3.03 -- 3.03 T-87 1.30 1.28 -- 1.28 T-88 1.37 1.26 -- 1.26 T-89 0.559 -- 0.505 0.505 T-90 0.737 -- 0.707 0.707 T-91 0.622 -- 0.584 0.584 T-92R 0.407 -- 0.396 0.396 T-93 0.518 -- 0.468 0.468 T-94 0.555 -- 0.540 0.540 T-95 1.640 -- 1.565 1.565 T-96 0.533 -- 0.533 0.533 T-97 0.385 -- 0.385 0.385 T-98 0.340 -- 0.340 0.340 Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 3 of 4
Preparer: A. Anstaett; Date: 10/14/21 Table 3 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Representative Fluoride Concentrations Western Area Well Representative Monitor Max Value 95% UCL Average Concentration Well (mg/L) (mg/L)
(mg/L) (mg/L)
T-99 0.552 -- 0.552 0.552 T-100 0.772 -- 0.772 0.772 T-101 0.534 -- 0.534 0.534 T-102 0.315 -- 0.315 0.315 T-103 0.356 -- 0.356 0.356 Notes:
mg/L milligrams per liter UCL Upper Confidence Limit Concentrations calculated for wells 1395 through 1403 used data available from Fourth Quarter 2017.
Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 4 of 4
Preparer: A. Anstaett; Date: 10/14/21 Table 3 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Representative Uranium Concentrations Western Area Well Representative Monitor Max Value 95% UCL Average Concentration Well (µg/L) (µg/L)
(µg/L) (µg/L) 1311 2.94 -- 2.72 2.72 1312 22.3 22.1 -- 22.1 1313 18.8 19.900 -- 18.8 1319A-2 11.00 -- 6.28 6.28 1319B-1 42.8 38.0 -- 38.0 1319B-2 1.41 1.45 -- 1.41 1319B-3 31.00 28.53 -- 28.53 1319B-4 1.64 1.62 -- 1.62 1319B-5 2.64 2.45 -- 2.45 1320 2.23 2.20 -- 2.20 1322 19.9 -- 12.8 12.8 1324 1.76 -- 1.62 1.62 1325 0.998 -- 0.938 0.938 1326 5.50 -- 4.20 4.20 1327B 4.42 -- 4.10 4.10 1329 4.86 -- 4.39 4.39 1330 6.11 -- 5.65 5.65 1331 36.8 32.1 -- 32.1 1333 21.7 -- 21.0 21.0 1334 16.2 -- 11.5 11.5 1335A 8.00 -- 6.09 6.09 1336A 39.8 36.1 -- 36.1 1337 7.02 6.69 -- 6.69 1338 0.817 -- 0.764 0.764 1340 8.98 8.46 -- 8.46 1341 2.40 2.36 -- 2.36 1343 21.90 21.28 -- 21.28 1345 2.15 2.08 -- 2.08 1346 6.99 5.46 -- 5.46 1347 40.3 34.5 -- 34.5 1348 77.9 71.3 -- 71.3 1349 30.0 29.6 -- 29.6 1350 19.4 -- 14.3 14.3 1351 1,548 875 -- 875 1352 149 125 -- 125 1353 44.7 50.3 -- 44.7 1354 3.11 3.05 -- 3.05 1355 2.64 -- 2.58 2.58 1356 1,260 572.4 -- 572.4 1357 2.16 2.19 -- 2.16 Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 1 of 4
Preparer: A. Anstaett; Date: 10/14/21 Table 3 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Representative Uranium Concentrations Western Area Well Representative Monitor Max Value 95% UCL Average Concentration Well (µg/L) (µg/L)
(µg/L) (µg/L) 1358 1.74 -- 1.57 1.57 1359 14.3 -- 12.1 12.1 1360 39.3 -- 23.9 23.9 1375 4.66 -- 3.55 3.55 1376 27.1 -- 15.4 15.4 1377 20.3 -- 16.5 16.5 1378 2.43 -- 2.25 2.25 1379 19.9 -- 18.3 18.3 1380 11.1 -- 10.5 10.5 1381 92.5 81.9 -- 81.9 1382 1.27 -- 1.26 1.26 1383 13.5 -- 10.0 10.0 1384 0.655 -- 0.635 0.635 1385 20.40 -- 19.0 19.0 1386 1.30 -- 1.23 1.23 1387 23.7 -- 20.4 20.4 1388 1.42 -- 1.35 1.35 1389 2.26 -- 1.40 1.40 1390 1.54 -- 1.54 1.54 1391 1.78 -- 1.66 1.66 1392 1.05 -- 1.05 1.05 1393 35.0 24.2 -- 24.2 1394 1.01 -- 1.00 1.00 1395 2.31 -- 2.31 2.31 1396 7.17 -- 7.170 7.17 1397 12.9 -- 12.90 12.90 1398 1.0 -- 0.990 0.99 1399 4.4 -- 4.350 4.35 1400 2.77 -- 2.77 2.77 1401 65.7 -- 65.7 65.7 1402 4.05 -- 4.05 4.05 1403 1.7 -- 1.7 1.7 MWWA-03 666 527 -- 527 MWWA-09 156 140 -- 140 T-51 36.8 36.4 -- 36.4 T-52 23.5 23.2 -- 23.2 T-53 33.6 34.4 -- 33.6 T-54 4.07 3.79 -- 3.79 T-55 8.51 7.39 -- 7.39 T-56 7.41 5.77 -- 5.77 Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 2 of 4
Preparer: A. Anstaett; Date: 10/14/21 Table 3 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Representative Uranium Concentrations Western Area Well Representative Monitor Max Value 95% UCL Average Concentration Well (µg/L) (µg/L)
(µg/L) (µg/L)
T-57 14.5 13.6 -- 13.6 T-58 20.4 19.9 -- 19.9 T-59 101.0 92.3 -- 92.3 T-60 50.1 48.6 -- 48.6 T-61 35.0 30.4 -- 30.4 T-62 238 178 -- 178 T-63 104 105 -- 104 T-64 208 126 -- 126 T-65 156 152 -- 152 T-66 123 122 -- 122 T-67 159 160 -- 159 T-68 162 150 -- 150 T-69 92.3 77.3 -- 77.3 T-70R 119 97.7 -- 97.7 T-72 142 141 -- 141 T-73 11.9 -- -- 10.4 T-74 16.1 -- -- 13.8 T-75 86.4 -- -- 76.7 T-76 194 173 -- 173 T-77 95.8 86.8 -- 86.8 T-78 21.8 -- 17.5 17.5 T-79 77.00 62.76 -- 62.76 T-81 12.7 -- 11.0 11.0 T-82 37.6 34.3 -- 34.3 T-83 15.1 -- 14.3 14.3 T-84 48.1 48.6 -- 48.1 T-85 27.8 28.1 -- 27.8 T-86 25.4 22.9 -- 22.9 T-87 24.1 22.0 -- 22.0 T-88 10.79 9.94 -- 9.94 T-89 52.1 50.7 -- 50.7 T-90 25.0 24.8 -- 24.8 T-91 28.0 27.8 -- 27.8 T-92R 43.9 -- 38.3 38.3 T-93 33.5 32.7 -- 32.7 T-94 20.2 20.9 -- 20.2 T-95 29.5 29.3 -- 29.3 T-96 36.1 34.7 -- 34.7 T-97 72.2 64.1 -- 64.1 T-98 63.3 -- 53.1 53.1 Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 3 of 4
Preparer: A. Anstaett; Date: 10/14/21 Table 3 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Representative Uranium Concentrations Western Area Well Representative Monitor Max Value 95% UCL Average Concentration Well (µg/L) (µg/L)
(µg/L) (µg/L)
T-99 48.1 42.1 -- 42.1 T-100 31.6 -- 29.1 29.1 T-101 36.0 -- 34.8 34.8 T-102 33.2 -- 32.3 32.3 T-103 11.1 -- 10.2 10.2 Notes:
µg/L milligrams per liter UCL Upper Confidence Limit Concentrations calculated for wells 1395 through 1403 used data available from Fourth Quarter 2017.
Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 4 of 4
Preparer: A. Anstaett; Date: 10/14/21 Table 3 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Representative Uranium Concentrations Burial Area #1 Well Representative Monitor Max Value 95% UCL Average Concentration Well (µg/L) (µg/L)
(µg/L) (µg/L) 1314 1.35 1.27 -- 1.27 1344 2.36 -- 1.96 1.96 1361 271 173 -- 173 1362 77.7 -- 40.2 40.2 1363 104 111 -- 104 1364 15.90 -- 7.16 7.16 1365 123 101 -- 101 1366 5.98 5.54 -- 5.54 1367 13.10 -- 8.34 8.34 1368 8.64 -- 5.89 5.89 1369 38.9 -- 20.6 20.6 1370 15.50 -- 7.25 7.25 1371 31.3 -- 27.9 27.9 1372 10.50 -- 9.36 9.36 1373 64.3 51.2 -- 51.2 02W01 2,720 2,495 -- 2,495 02W02 2,346 -- 2,128 2,128 02W03 1,190 -- 862 862 02W04 497 -- 301 301 02W05 638 -- 388 388 02W06 1,950 1,310 -- 1,310 02W07 1,478 -- 924 924 02W08 744 429 -- 429 02W09 9.95 6.97 -- 6.97 02W10 4.37 -- 3.99 3.99 02W11 311 -- 136 136 02W12 448 -- 203 203 02W13 33.8 -- 28.4 28.4 02W14 306 -- 279 279 02W15 261 -- 101 101 02W16 20.2 17.4 -- 17.4 02W17 15.7 13.9 -- 13.9 02W18 504 -- 289 289 02W19 1,306 -- 712 712 02W20 1.55 -- 1.24 1.24 02W21 5.54 -- 5.49 5.49 02W22 10.50 -- 8.63 8.63 02W23 7.37 -- 7.24 7.24 02W24 15.7 -- 13.3 13.3 02W25 28.4 -- 19.0 19.0 Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 1 of 3
Preparer: A. Anstaett; Date: 10/14/21 Table 3 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Representative Uranium Concentrations Burial Area #1 Well Representative Monitor Max Value 95% UCL Average Concentration Well (µg/L) (µg/L)
(µg/L) (µg/L) 02W26 7.10 -- 4.04 4.04 02W27 188 135 -- 135 02W28 428 353 -- 353 02W29 1,570 -- 1,115 1,115 02W30 338 -- 310 310 02W31 997 -- 861 861 02W32 3,410 1,577 -- 1,577 02W33 31.1 -- 17.4 17.4 02W34 5.61 -- 4.97 4.97 02W35 29.3 24.5 -- 24.5 02W36 18.6 -- 15.2 15.2 02W37 789 -- 333 333 02W38 392 -- 255 255 02W39 851 613 -- 613 02W40 1,430 1,137 -- 1,137 02W41 517 -- 421 421 02W42 516 408 -- 408 02W43 134 124 -- 124 02W44 945 506 -- 506 02W45 62.4 -- 48.6 48.6 02W46 4,330 -- 2,663 2,663 02W47 342 -- 264 264 02W50 3.99 -- 3.85 3.85 02W51 4.56 -- 4.52 4.52 02W52 2.49 -- 2.28 2.28 02W53 63.6 -- 41.6 41.6 02W62 5.55 -- 5.07 5.07 1315R 1,510 1,103 -- 1,103 1316R 144 -- 137 137 TMW-01 767 -- 463 463 TMW-02 5.40 -- 3.76 3.76 TMW-05 3.87 -- 3.58 3.58 TMW-06 2.41 -- 2.26 2.26 TMW-07 221 -- 210 210 TMW-08 3,230 2,589 -- 2,589 TMW-09 3,760 2,975 -- 2,975 TMW-13 4,510 3,516 -- 3,516 TMW-18 17.2 -- 14.8 14.8 TMW-20 8.92 -- 6.40 6.40 TMW-21 96.6 -- 62.4 62.4 Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 2 of 3
Preparer: A. Anstaett; Date: 10/14/21 Table 3 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Representative Uranium Concentrations Burial Area #1 Well Representative Monitor Max Value 95% UCL Average Concentration Well (µg/L) (µg/L)
(µg/L) (µg/L)
TMW-24 82.3 68.3 -- 68.3 TMW-25 123 -- 116 116 Notes:
µg/L milligrams per liter UCL Upper Confidence Limit Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 3 of 3
Table 35 Revision 0 Preparer: J. Lux Date: 8/10/22 Surface Water Concentrations Reviewer: B. Brittain Location 1201 Date: 8/26/22 Total Detection Reporting Date Analyte Result Unit Qual Uranium Limit Limit Uranium234 4.210 pci/L 6/1/1990 Uranium235 0.033 pci/L Uranium238 3.610 7.85 pci/L Uranium234 0.600 pci/L 6/13/1995 Uranium235 0.300 0.300 0.300 pci/L U Uranium238 0.300 1.20 pci/L Uranium234 3.630 pci/L 5/1/1996 Uranium235 0.370 pci/L Uranium238 2.660 6.66 pci/L Uranium234 5.500 pci/L 6/12/1997 Uranium235 0.400 0.400 0.400 pci/L U Uranium238 2.500 8.40 pci/L Uranium234 4.200 pci/L 5/26/1998 Uranium235 0.600 pci/L Uranium238 2.700 7.50 pci/L Uranium234 2.100 pci/L 6/28/1999 Uranium235 0.300 0.300 0.300 pci/L U Uranium238 1.200 3.60 pci/L Uranium234 2.820 pci/L 7/5/2000 Uranium235 0.135 pci/L Uranium238 1.950 4.91 pci/L Uranium234 2.460 pci/L 6/25/2001 Uranium235 0.115 pci/L Uranium238 1.910 4.49 pci/L Uranium234 1.940 pci/L 6/27/2002 Uranium235 0.230 pci/L Uranium238 1.330 3.50 pci/L Uranium234 1.520 pci/L 6/23/2003 Uranium235 0.125 pci/L Uranium238 0.883 2.53 pci/L Uranium234 2.110 0.09 pci/L 8/26/2004 Uranium235 0.169 0.05 pci/L Uranium238 1.560 3.84 0.02 pci/L Cimarron Environmental Response Trust Facility Decommissioning Plan Rev 3 Page 1 of 3
Table 35 Revision 0 Preparer: J. Lux Date: 8/10/22 Surface Water Concentrations Reviewer: B. Brittain Location 1201 Date: 8/26/22 Total Detection Reporting Date Analyte Result Unit Qual Uranium Limit Limit Uranium234 3.220 0.100 0.85 pci/L J 5/24/2005 Uranium235 0.100 0.100 0.72 pci/L UJ Uranium238 2.260 5.58 0.100 0.66 pci/L J Uranium234 2.070 0.100 0.09 pci/L 5/24/2006 Uranium235 0.181 0.100 0.12 pci/L Uranium238 1.600 3.85 0.100 0.09 pci/L Uranium234 3.690 0.100 0.17 pci/L J 6/1/2009 Uranium235 0.176 0.100 0.13 pci/L J Uranium238 2.780 6.65 0.100 0.06 pci/L J Uranium234 1.120 0.100 0.11 pci/L Uranium235 0.100 0.100 0.03 pci/L UJ Uranium238 0.968 2.19 0.100 0.09 pci/L 10/18/2010 Uranium234 2.030 0.100 0.11 pci/L J Uranium235 0.146 0.100 0.03 pci/L Uranium238 1.230 3.41 0.100 0.09 pci/L J Uranium234 1.350 0.100 0.51 pci/L 8/17/2011 Uranium235 0.100 0.100 0.50 pci/L U Uranium238 1.010 2.46 0.100 0.59 pci/L Uranium234 0.379 1.000 0.38 pci/L 8/1/2012 Uranium235 1.000 1.000 0.09 pci/L U Uranium238 0.203 1.58 1.000 0.19 pci/L Uranium234 2.550 1.000 0.39 pci/L 5/14/2013 Uranium235 1.000 1.000 0.30 pci/L U Uranium238 1.750 5.30 1.000 0.39 pci/L Uranium234 5.210 1.000 0.56 pci/L 5/28/2014 Uranium235 1.000 1.000 0.47 pci/L U Uranium238 2.570 8.78 0.200 0.07 pci/L Uranium234 2.380 1.000 0.51 pci/L 3/27/2015 Uranium235 1.000 1.000 0.55 pci/L U Uranium238 1.760 5.14 0.200 0.07 pci/L Uranium234 4.360 1.000 0.26 pci/L 5/11/2016 Uranium235 0.518 1.000 0.32 pci/L Uranium238 2.740 7.62 0.200 0.07 pci/L Cimarron Environmental Response Trust Facility Decommissioning Plan Rev 3 Page 2 of 3
Table 35 Revision 0 Preparer: J. Lux Date: 8/10/22 Surface Water Concentrations Reviewer: B. Brittain Location 1201 Date: 8/26/22 Total Detection Reporting Date Analyte Result Unit Qual Uranium Limit Limit Uranium234 1.280 1.000 1.18 pci/L 6/13/2018 Uranium235 1.000 0.070 0.01 pci/L U Uranium238 1.210 3.49 0.200 0.07 pci/L Uranium234 1.640 0.615 1.00 pci/L 8/27/2019 Uranium235 0.024 0.514 1.00 pci/L U Uranium238 1.300 2.96 0.550 1.00 pci/L Uranium234 2.930 0.610 1.00 pci/L 7/23/2020 Uranium235 1.000 0.403 1.00 pci/L U Uranium238 1.370 5.30 0.360 1.00 pci/L Uranium234 2.740 1.090 0.91 pci/L 7/7/2021 Uranium235 0.028 0.245 0.57 pci/L U Uranium238 1.610 4.32 0.876 0.91 pci/L Uranium234 1.860 0.896 1.00 pci/L 7/12/2022 Uranium235 0.059 0.624 1.00 pci/L U Uranium238 1.490 3.41 0.706 1.00 pci/L For All Upstream Sample Results Mean 4.69 Maximum 8.78 Standard Deviation 2.11 Mean + 2 8.91 Cimarron Environmental Response Trust Facility Decommissioning Plan Rev 3 Page 3 of 3
Table 36 Revision 0 Preparer: J. Lux Date: 8/10/22 Background Groundwater Concentrations Reviewer: B. Brittain Sandstone A Date: 08/29/22 Total Detection Reporting Monitor Well Date Analyte Result Unit Qual Uranium Limit Limit Uranium-234 1.490 pci/L 3/1/1989 Uranium-235 0.046 pci/L Uranium-238 1.000 2.54 pci/L Uranium-234 1.630 pci/L 10/1/1989 Uranium-235 0.028 pci/L Uranium-238 0.820 2.48 pci/L Uranium-234 1.750 pci/L 6/1/1990 Uranium-235 0.094 pci/L Uranium-238 0.640 2.48 pci/L Uranium-234 10.300 pci/L 6/14/1995 Uranium-235 0.600 pci/L Uranium-238 3.400 14.30 pci/L Uranium-234 1.080 pci/L 4/30/1996 Uranium-235 0.096 pci/L Uranium-238 0.490 1.67 pci/L Uranium-234 0.900 pci/L 6/10/1997 Uranium-235 0.200 0.200 0.200 pci/L U Uranium-238 0.300 1.40 pci/L Uranium-234 0.900 pci/L 5/29/1998 Uranium-235 0.200 0.200 0.200 pci/L U Uranium-238 0.500 1.60 pci/L 1325 Uranium-234 0.922 pci/L J 6/23/1999 Uranium-235 0.255 0.255 pci/L U Uranium-238 0.327 1.50 pci/L J Uranium-234 0.900 pci/L 6/24/1999 Uranium-235 0.100 pci/L Uranium-238 0.600 1.60 pci/L Uranium-234 0.800 pci/L 6/30/2000 Uranium-235 0.189 0.189 0.189 pci/L U Uranium-238 0.292 1.28 pci/L Uranium-234 0.707 pci/L 6/27/2001 Uranium-235 0.036 pci/L Uranium-238 0.310 1.05 pci/L Uranium-234 0.963 pci/L 6/26/2002 Uranium-235 0.150 pci/L Uranium-238 0.392 1.51 pci/L Uranium-234 0.924 pci/L 6/23/2003 Uranium-235 0.088 0.088 pci/L U Uranium-238 0.308 1.32 pci/L Uranium-234 0.754 0.084 pci/L 8/26/2004 Uranium-235 0.093 0.055 pci/L Uranium-238 0.364 1.21 0.055 pci/L Cimarron Environmental Response Trust Facility Decommissioning Plan Rev 3 Page 1 of 3
Table 36 Revision 0 Preparer: J. Lux Date: 8/10/22 Background Groundwater Concentrations Reviewer: B. Brittain Sandstone A Date: 08/29/22 Total Detection Reporting Monitor Well Date Analyte Result Unit Qual Uranium Limit Limit Uranium-234 0.846 0.071 0.100 pci/L 5/24/2005 Uranium-235 0.045 0.019 0.100 pci/L J Uranium-238 0.433 1.32 0.019 0.100 pci/L Uranium-234 0.593 0.097 0.100 pci/L J 5/24/2006 Uranium-235 0.100 0.100 0.100 pci/L U Uranium-238 0.328 1.02 0.124 0.100 pci/L J Uranium-234 0.687 0.063 0.100 pci/L 1325 8/15/2007 Uranium-235 0.054 0.027 0.100 pci/L Uranium-238 0.268 1.01 0.022 0.100 pci/L Uranium-234 0.846 0.039 0.100 pci/L 6/25/2008 Uranium-235 0.100 0.048 0.100 pci/L U Uranium-238 0.297 1.24 0.048 0.100 pci/L Uranium-234 0.618 0.205 0.100 pci/L J-10/25/2010 Uranium-235 0.100 0.202 0.100 pci/L UJ Uranium-238 0.299 1.02 0.164 0.100 pci/L J-Uranium-234 1.640 pci/L 3/1/1989 Uranium-235 0.100 pci/L Uranium-238 1.250 2.99 pci/L Uranium-234 2.140 pci/L 10/1/1989 Uranium-235 0.023 pci/L Uranium-238 1.520 3.68 pci/L Uranium-234 1.220 pci/L 1335 6/1/1990 Uranium-235 0.022 pci/L Uranium-238 0.740 1.98 pci/L Uranium-234 0.600 pci/L 6/12/1995 Uranium-235 0.300 0.300 0.300 pci/L U Uranium-238 0.300 1.20 pci/L Uranium-234 1.030 pci/L 4/30/1996 Uranium-235 0.069 pci/L Uranium-238 0.620 1.72 pci/L Uranium-234 0.700 pci/L 10/17/1996 Uranium-235 0.100 pci/L Uranium-238 0.500 1.30 pci/L Uranium-234 1.600 pci/L 6/10/1997 Uranium-235 0.200 0.200 0.200 pci/L U Uranium-238 0.700 2.50 pci/L 1335A Uranium-234 1.400 pci/L 6/17/1998 Uranium-235 0.300 0.300 0.300 pci/L U Uranium-238 0.600 2.30 pci/L Uranium-234 1.500 pci/L 6/24/1999 Uranium-235 0.100 pci/L Uranium-238 0.500 2.10 pci/L Cimarron Environmental Response Trust Facility Decommissioning Plan Rev 3 Page 2 of 3
Table 36 Revision 0 Preparer: J. Lux Date: 8/10/22 Background Groundwater Concentrations Reviewer: B. Brittain Sandstone A Date: 08/29/22 Total Detection Reporting Monitor Well Date Analyte Result Unit Qual Uranium Limit Limit Uranium-234 0.896 pci/L 7/5/2000 Uranium-235 0.159 0.159 0.159 pci/L U Uranium-238 0.657 1.71 pci/L Uranium-234 0.985 pci/L 6/27/2001 Uranium-235 0.049 0.049 pci/L U Uranium-238 0.583 1.62 pci/L Uranium-234 3.260 pci/L 6/26/2002 Uranium-235 0.974 0.974 pci/L U Uranium-238 0.971 5.21 0.971 pci/L U Uranium-234 0.741 pci/L 6/23/2003 Uranium-235 0.079 0.079 pci/L U Uranium-238 0.492 1.31 pci/L Uranium-234 1.040 0.074 pci/L 8/26/2004 Uranium-235 0.162 0.065 pci/L Uranium-238 0.467 1.67 0.065 pci/L 1335A Uranium-234 1.040 0.048 0.100 pci/L 5/24/2005 Uranium-235 0.146 0.039 0.100 pci/L J Uranium-238 0.515 1.70 0.048 0.100 pci/L Uranium-234 0.851 0.051 0.100 pci/L 5/24/2006 Uranium-235 0.100 0.063 0.100 pci/L U Uranium-238 0.594 1.55 0.063 0.100 pci/L Uranium-234 0.859 0.073 0.100 pci/L 8/15/2007 Uranium-235 0.100 0.067 0.100 pci/L U Uranium-238 0.536 1.50 0.045 0.100 pci/L Uranium-234 0.864 0.074 0.100 pci/L 6/24/2008 Uranium-235 0.100 0.048 0.100 pci/L U Uranium-238 0.465 1.43 0.049 0.100 pci/L Uranium-234 1.120 0.177 0.100 pci/L 10/25/2010 Uranium-235 0.099 0.059 0.100 pci/L J Uranium-238 0.847 2.07 0.122 0.100 pci/L For Both Background Monitor Wells Mean 2.13 Maximum 14.30 Standard Deviation 2.18 Mean + 2 6.50 For Both Background Monitor Wells (w/o 6/14/1995 data for Monitor Well 1325)
Mean 1.80 Maximum 5.21 Standard Deviation 0.82 Mean + 2 3.45 Cimarron Environmental Response Trust Facility Decommissioning Plan Rev 3 Page 3 of 3
Table 37 Revision 0 Preparer: J. Lux Date: 8/10/22 Background Groundwater Concentrations Reviewer: B. Brittain Sandstone B Date: 8/29/22 Total Detection Reporting Monitor Well Date Analyte Result Unit Qual Uranium Limit Limit Uranium-234 0.770 pci/L 3/1/1989 Uranium-235 0.039 pci/L Uranium-238 0.310 1.12 pci/L Uranium-234 1.470 pci/L 10/1/1989 Uranium-235 0.027 pci/L Uranium-238 0.480 1.98 pci/L Uranium-234 1.610 pci/L 6/1/1990 Uranium-235 0.022 pci/L Uranium-238 0.690 2.32 pci/L Uranium-234 1.240 pci/L 4/29/1996 Uranium-235 0.012 pci/L Uranium-238 0.560 1.81 pci/L Uranium-234 1.300 pci/L 6/5/1997 Uranium-235 0.100 pci/L Uranium-238 0.600 2.00 pci/L Uranium-234 1.800 pci/L 6/19/1998 Uranium-235 0.100 pci/L Uranium-238 0.800 2.70 pci/L 1314 Uranium-234 1.800 pci/L 6/23/1999 Uranium-235 0.300 pci/L Uranium-238 0.700 2.80 pci/L Uranium-234 1.100 pci/L 6/29/2000 Uranium-235 0.139 0.139 0.139 pci/L U Uranium-238 0.316 1.56 pci/L Uranium-234 0.893 pci/L 6/29/2001 Uranium-235 0.042 0.042 pci/L U Uranium-238 0.382 1.32 pci/L Uranium-234 1.160 pci/L 6/25/2002 Uranium-235 0.143 pci/L Uranium-238 0.354 1.66 pci/L Uranium-234 1.240 pci/L 8/26/2002 Uranium-235 0.272 0.272 pci/L U Uranium-238 0.519 2.03 pci/L Uranium-234 1.310 pci/L 6/23/2003 Uranium-235 0.122 pci/L Uranium-238 0.496 1.93 pci/L Cimarron Environmental Response Trust Facility Decommissioning Plan Rev 3 Page 1 of 4
Table 37 Revision 0 Preparer: J. Lux Date: 8/10/22 Background Groundwater Concentrations Reviewer: B. Brittain Sandstone B Date: 8/29/22 Total Detection Reporting Monitor Well Date Analyte Result Unit Qual Uranium Limit Limit Uranium-234 1.040 0.062 pci/L J 8/30/2004 Uranium-235 0.263 0.076 pci/L J Uranium-238 0.479 1.78 0.080 pci/L J Uranium-234 1.280 0.240 0.100 pci/L 5/31/2005 Uranium-235 0.100 0.120 0.100 pci/L U Uranium-238 0.407 1.79 0.120 0.100 pci/L Uranium-234 1.190 0.086 0.100 pci/L J 5/24/2006 Uranium-235 0.100 0.073 0.100 pci/L U Uranium-238 0.424 1.71 0.059 0.100 pci/L J Uranium-234 1.000 1.450 1.000 pci/L U 8/15/2007 Uranium-235 1.000 1.440 1.000 pci/L UJ Uranium-238 1.000 3.00 1.160 1.000 pci/L U Uranium-234 1.270 0.053 0.100 pci/L 8/16/2007 Uranium-235 0.053 0.048 0.100 pci/L Uranium-238 0.574 1.90 0.047 0.100 pci/L Uranium-234 0.917 0.047 0.100 pci/L 6/25/2008 Uranium-235 0.100 0.047 0.100 pci/L U Uranium-238 0.409 1.43 0.047 0.100 pci/L 1314 Uranium-234 0.986 0.076 0.100 pci/L 5/28/2009 Uranium-235 0.067 0.040 0.100 pci/L Uranium-238 0.351 1.40 0.094 0.100 pci/L Uranium-234 0.914 0.061 0.100 pci/L 10/27/2010 Uranium-235 0.071 0.024 0.100 pci/L Uranium-238 0.331 1.32 0.019 0.100 pci/L Uranium-234 1.010 0.089 0.100 pci/L 8/16/2011 Uranium-235 0.100 0.075 0.100 pci/L UJ Uranium-238 0.334 1.44 0.078 0.100 pci/L Uranium-234 0.796 0.582 1.000 pci/L 8/1/2012 Uranium-235 1.000 0.437 1.000 pci/L U Uranium-238 1.000 2.80 0.252 1.000 pci/L U Uranium-234 0.928 0.546 1.000 pci/L 5/14/2013 Uranium-235 1.000 0.438 1.000 pci/L U Uranium-238 0.499 2.43 0.354 1.000 pci/L Uranium-234 0.987 0.558 1.000 pci/L 5/28/2014 Uranium-235 1.000 0.320 1.000 pci/L U Uranium-238 0.551 2.54 0.067 0.200 pci/L Cimarron Environmental Response Trust Facility Decommissioning Plan Rev 3 Page 2 of 4
Table 37 Revision 0 Preparer: J. Lux Date: 8/10/22 Background Groundwater Concentrations Reviewer: B. Brittain Sandstone B Date: 8/29/22 Total Detection Reporting Monitor Well Date Analyte Result Unit Qual Uranium Limit Limit Uranium-234 0.891 0.532 1.000 pci/L 3/25/2015 Uranium-235 1.000 0.448 1.000 pci/L U Uranium-238 0.465 2.36 0.067 0.200 pci/L Uranium-235 1.000 0.230 1.000 pci/L U 5/10/2016 Uranium-238 0.666 0.067 0.200 pci/L Uranium-234 1.610 3.28 0.500 1.000 pci/L Uranium-238 0.870 0.067 0.200 pci/L 5/2/2017 Uranium-235 1.010 0.010 0.070 pci/L Uranium-234 1.760 3.64 0.424 1.000 pci/L Uranium-235 1.000 0.010 0.070 pci/L U 6/13/2018 Uranium-238 0.566 0.067 0.200 pci/L Uranium-234 1.310 2.88 0.652 1.000 pci/L 1314 Uranium-235 0.150 0.409 1.000 pci/L U 8/27/2019 Uranium-238 0.519 0.382 1.000 pci/L Uranium-234 1.250 1.92 0.623 1.000 pci/L Uranium-235 1.000 0.493 1.000 pci/L U 7/22/2020 Uranium-234 0.892 0.627 1.000 pci/L Uranium-238 0.452 2.34 0.440 1.000 pci/L Uranium-234 1.190 0.550 1.000 pci/L 7/6/2021 Uranium-235 0.000 0.309 1.000 pci/L Uranium-238 0.337 1.53 0.640 1.000 pci/L Uranium-234 1.130 0.426 1.000 pci/L 7/14/2022 Uranium-235 0.162 0.335 1.000 pci/L U Uranium-238 0.534 1.83 0.317 1.000 pci/L Uranium-234 2.240 pci/L 8/26/2002 Uranium-235 0.269 0.269 pci/L U Uranium-238 1.580 4.09 pci/L Uranium-234 1.130 0.127 pci/L 9/8/2004 Uranium-235 0.148 0.089 pci/L Uranium-238 0.668 1.95 0.089 pci/L 02W52 Uranium-234 1.510 0.697 1.000 pci/L 5/21/2013 Uranium-235 1.000 0.781 1.000 pci/L U Uranium-238 0.456 2.97 0.342 1.000 pci/L Uranium-234 1.370 0.350 1.000 pci/L 3/25/2015 Uranium-235 1.000 0.351 1.000 pci/L U Uranium-238 0.622 2.99 0.067 0.200 pci/L Cimarron Environmental Response Trust Facility Decommissioning Plan Rev 3 Page 3 of 4
Table 37 Revision 0 Preparer: J. Lux Date: 8/10/22 Background Groundwater Concentrations Reviewer: B. Brittain Sandstone B Date: 8/29/22 Total Detection Reporting Monitor Well Date Analyte Result Unit Qual Uranium Limit Limit Uranium-234 0.896 0.304 0.264 pci/L 1391 12/19/2014 Uranium-235 1.000 0.156 0.281 pci/L U Uranium-238 0.509 2.41 0.235 0.067 pci/L Uranium-234 1.560 0.667 0.446 pci/L 5/16/2013 Uranium-235 1.000 0.242 0.463 pci/L U Uranium-238 0.747 3.307 0.484 0.446 pci/L Uranium-234 1.130 0.238 pci/L 1319B-2 9/24/2003 Uranium-235 0.105 0.062 pci/L U Uranium-238 0.293 1.528 0.109 pci/L Uranium-234 1.400 0.233 pci/L 6/26/2003 Uranium-235 0.084 0.057 pci/L U Uranium-238 0.379 1.863 0.113 pci/L For All Four Background Monitor Wells Mean 2.19 Maximum 4.09 Standard Deviation 0.70 Mean + 2 3.59 Cimarron Environmental Response Trust Facility Decommissioning Plan Rev 3 Page 4 of 4
Table 38 Revision 0 Preparer: J. Lux Date: 8/10/22 Background Groundwater Concentrations Reviewer: B. Brittain Sandstone C Date: 8/29/22 Total Detection Reporting Monitor Well Date Analyte Result Unit Qual Uranium Limit Limit Uranium-234 18.000 pci/L 3/1/1989 Uranium-235 0.660 pci/L Uranium-238 9.000 27.66 pci/L Uranium-234 28.200 pci/L 10/1/1989 Uranium-235 0.370 pci/L Uranium-238 15.100 43.67 pci/L Uranium-234 25.000 pci/L 6/1/1990 Uranium-235 0.410 pci/L Uranium-238 14.000 39.41 pci/L Uranium-234 21.000 pci/L 6/1/1991 Uranium-235 0.510 pci/L Uranium-238 11.200 32.71 pci/L Uranium-234 21.790 pci/L 6/1/1992 Uranium-235 0.490 pci/L Uranium-238 10.580 32.86 pci/L Uranium-234 18.900 pci/L 6/1/1993 Uranium-235 1.800 pci/L Uranium-238 11.300 32.00 pci/L 1328 Uranium-234 21.500 pci/L 6/21/1994 Uranium-235 0.800 pci/L Uranium-238 11.100 33.40 pci/L Uranium-234 19.600 pci/L 6/21/1995 Uranium-235 1.300 pci/L Uranium-238 10.200 31.10 pci/L Uranium-234 23.100 pci/L 4/30/1996 Uranium-235 0.770 pci/L Uranium-238 11.590 35.46 pci/L Uranium-234 20.700 pci/L 6/16/1997 Uranium-235 0.500 pci/L Uranium-238 10.500 31.70 pci/L Uranium-234 22.100 pci/L 5/28/1998 Uranium-235 2.000 pci/L Uranium-238 8.000 32.10 pci/L Uranium-234 20.200 pci/L 6/22/1999 Uranium-235 0.700 pci/L Uranium-238 11.200 32.10 pci/L Cimarron Environmental Response Trust Facility Decommissioning Plan Rev 3 Page 1 of 4
Table 38 Revision 0 Preparer: J. Lux Date: 8/10/22 Background Groundwater Concentrations Reviewer: B. Brittain Sandstone C Date: 8/29/22 Total Detection Reporting Monitor Well Date Analyte Result Unit Qual Uranium Limit Limit Uranium-234 20.100 pci/L 6/28/2000 Uranium-235 0.528 pci/L Uranium-238 10.300 30.93 pci/L Uranium-234 18.800 pci/L 6/28/2001 Uranium-235 1.010 pci/L Uranium-238 10.400 30.21 pci/L Uranium-234 19.000 pci/L 6/24/2002 Uranium-235 1.410 pci/L Uranium-238 9.970 30.38 pci/L 1328 Uranium-234 21.600 pci/L 6/26/2003 Uranium-235 1.110 pci/L Uranium-238 11.300 34.01 pci/L Uranium-234 21.600 pci/L 9/24/2003 Uranium-235 0.855 pci/L Uranium-238 11.800 34.26 pci/L Uranium-234 19.200 pci/L 3/16/2004 Uranium-235 0.661 pci/L Uranium-238 10.000 29.86 pci/L Cimarron Environmental Response Trust Facility Decommissioning Plan Rev 3 Page 2 of 4
Table 38 Revision 0 Preparer: J. Lux Date: 8/10/22 Background Groundwater Concentrations Reviewer: B. Brittain Sandstone C Date: 8/29/22 Total Detection Reporting Monitor Well Date Analyte Result Unit Qual Uranium Limit Limit Uranium-234 21.200 0.067 pci/L 8/30/2004 Uranium-235 2.740 0.060 pci/L Uranium-238 11.800 35.74 0.023 pci/L Uranium-234 22.000 0.097 0.100 pci/L 6/1/2005 Uranium-235 1.180 0.047 0.100 pci/L Uranium-238 12.400 35.58 0.047 0.100 pci/L Uranium-234 20.300 0.064 0.100 pci/L J 5/23/2006 Uranium-235 1.080 0.055 0.100 pci/L J Uranium-238 10.100 31.48 0.053 0.100 pci/L J Uranium-234 21.300 0.153 0.100 pci/L J-8/14/2007 Uranium-235 1.210 0.105 0.100 pci/L Uranium-238 11.700 34.21 0.077 0.100 pci/L Uranium-234 20.500 0.093 0.100 pci/L 6/24/2008 Uranium-235 0.738 0.069 0.100 pci/L Uranium-238 11.200 32.44 0.061 0.100 pci/L Uranium-234 20.200 0.363 1.000 pci/L 11/13/2014 Uranium-235 1.000 0.495 1.000 pci/L U Uranium-238 12.000 33.20 0.067 0.200 pci/L 1328 Uranium-234 18.200 0.262 1.000 pci/L Uranium-235 0.622 0.518 1.000 pci/L Uranium-238 10.500 29.32 0.067 0.200 pci/L Uranium-234 20.600 0.262 1.000 pci/L Uranium-235 0.803 0.518 1.000 pci/L Uranium-238 13.200 34.60 0.067 0.200 pci/L Uranium-234 19.800 0.262 1.000 pci/L Uranium-235 1.000 0.518 1.000 pci/L U Uranium-238 12.100 32.90 0.067 0.200 pci/L 4/1/2015 Uranium-234 18.200 0.262 1.000 pci/L Uranium-235 1.000 0.518 1.000 pci/L U Uranium-238 9.240 28.44 0.067 0.200 pci/L Uranium-234 24.900 0.262 1.000 pci/L Uranium-235 1.000 0.518 1.000 pci/L U Uranium-238 10.100 36.00 0.067 0.200 pci/L Uranium-234 20.100 0.262 1.000 pci/L Uranium-235 0.426 0.518 1.000 pci/L Uranium-238 9.960 30.49 0.067 0.200 pci/L Cimarron Environmental Response Trust Facility Decommissioning Plan Rev 3 Page 3 of 4
Table 38 Revision 0 Preparer: J. Lux Date: 8/10/22 Background Groundwater Concentrations Reviewer: B. Brittain Sandstone C Date: 8/29/22 Total Detection Reporting Monitor Well Date Analyte Result Unit Qual Uranium Limit Limit Uranium-234 11.000 pci/L 2/20/1997 Uranium-235 0.200 pci/L Uranium-238 3.700 14.90 pci/L Uranium-234 13.500 pci/L 6/18/1998 Uranium-235 0.300 pci/L Uranium-238 4.200 18.00 pci/L Uranium-234 14.600 pci/L 6/29/1999 Uranium-235 0.300 pci/L Uranium-238 3.500 18.40 pci/L Uranium-234 16.300 pci/L 6/26/2002 Uranium-235 2.320 pci/L Uranium-238 4.090 22.71 pci/L Uranium-234 12.500 0.022 0.100 pci/L 10/21/2010 Uranium-235 0.259 0.027 0.100 pci/L Uranium-238 4.060 16.82 0.022 0.100 pci/L Uranium-234 12.000 0.458 1.000 pci/L 1339 Uranium-235 0.626 0.525 1.000 pci/L Uranium-238 3.830 16.46 0.067 0.200 pci/L Uranium-234 10.500 0.458 1.000 pci/L Uranium-235 1.000 0.525 1.000 pci/L U Uranium-238 4.020 15.52 0.067 0.200 pci/L Uranium-234 13.900 0.458 1.000 pci/L Uranium-235 1.000 0.525 1.000 pci/L U Uranium-238 4.680 19.58 0.067 0.200 pci/L 3/31/2015 Uranium-234 11.900 0.458 1.000 pci/L Uranium-235 0.437 0.525 1.000 pci/L Uranium-238 4.320 16.66 0.067 0.200 pci/L Uranium-234 12.300 0.458 1.000 pci/L Uranium-235 1.000 0.525 1.000 pci/L U Uranium-238 4.290 17.59 0.067 0.200 pci/L Uranium-234 14.400 0.526 1.000 pci/L Uranium-235 1.000 0.446 1.000 pci/L U Uranium-238 3.990 19.39 0.067 0.200 pci/L For Both Background Monitor Wells Mean 28.88 Maximum 43.67 Standard Deviation 7.40 Mean + 2 43.67 Cimarron Environmental Response Trust Facility Decommissioning Plan Rev 3 Page 4 of 4
Table 39 Revision 0 Preparer: J. Lux Date: 8/10/22 Background Groundwater Concentrations Reviewer: B. Brittain Alluvium Date: 8/29/22 Total Detection Reporting Monitor Well Date Analyte Result Unit Qual Uranium Limit Limit Uranium-234 3.700 pci/L 10/1/1997 Uranium-235 0.300 pci/L Uranium-238 1.700 5.70 pci/L Uranium-234 4.900 pci/L 12/16/1997 Uranium-235 0.300 pci/L Uranium-238 3.100 8.30 pci/L Uranium-234 3.700 pci/L 3/6/1998 Uranium-235 0.300 pci/L Uranium-238 2.500 6.50 pci/L Uranium-234 5.000 pci/L 6/17/1998 Uranium-235 0.200 pci/L Uranium-238 2.600 7.80 pci/L 1342 Uranium-234 7.300 pci/L 6/23/1999 Uranium-235 0.300 pci/L Uranium-238 4.400 12.00 pci/L Uranium-234 3.460 pci/L 6/29/2000 Uranium-235 0.148 0.148 0.148 pci/L U Uranium-238 1.460 5.07 pci/L Uranium-234 3.400 pci/L 6/27/2001 Uranium-235 0.144 pci/L Uranium-238 1.790 5.33 pci/L Uranium-234 3.470 0.463 1.000 pci/L 5/28/2013 Uranium-235 1.000 0.310 1.000 pci/L U Uranium-238 1.510 5.98 0.251 1.000 pci/L Uranium-234 5.390 pci/L T-103 12/17/2014 Uranium-235 1.000 pci/L U Uranium-238 3.300 9.69 pci/L For Both "Background" Monitor Wells Mean 7.37 Maximum 12.00 Standard Deviation 2.31 Mean + 2 12.00 Cimarron Environmental Response Trust Facility Decommissioning Plan Rev 3 Page 1 of 1
Preparer: A. Anstaett; Date: 10/15/21 Table 51 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Project Transportation Emissions Estimate Total Project Emissions (tons)
Description Criteria Pollutants CO2e NOx CO VOC PM10 PM2.5 SO2 Construction engine emissions 6.93 1.87 0.54 0.30 0.29 0.00 322 Unpaved roads -- -- -- 65.79 6.58 -- --
Paved roads -- -- -- 4.37 1.07 -- --
Earthmoving -- -- -- 17.93 3.73 -- --
On-Road tailpipe 13.67 69.28 8.10 0.86 0.73 9.59E-02 6,037 Total emissions 20.60 71.15 8.65 89.25 12.41 0.10 6,359 Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 1 of 1
Preparer: J. Wilson; Date: 10/27/21 Table 8 Revision 0 Reviewer: E. Lloyd; Date: 09/09/22 Uranium Treatment Train Valve Arrangements WA TRAIN AT WATF Initial Second Third Vessel Vessel Vessel Sequence Sequence Sequence Lead Vessel VSL-101 VSL-102 VSL-103 Lag Vessel VSL-102 VSL-103 VSL-101 Polish Vessel VSL-103 VSL-101 VSL-102 VALVE ID VALVE POSITION V-101 OPEN CLOSED CLOSED V-102 CLOSED OPEN CLOSED V-104 OPEN CLOSED OPEN V-105 OPEN OPEN OPEN V-106 CLOSED CLOSED OPEN V-108 OPEN OPEN CLOSED V-112 OPEN CLOSED CLOSED V-119 CLOSED OPEN CLOSED V-120 CLOSED CLOSED OPEN V-123 OPEN OPEN OPEN V-131 CLOSED OPEN OPEN V-132 OPEN OPEN OPEN Note: After the third sequence, the valve arrangement restores the initial vessel sequence, and the process starts over.
Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 1 of 2
Preparer: J. Wilson; Date: 10/27/21 Table 8 Revision 0 Reviewer: E. Lloyd; Date: 09/09/22 Uranium Treatment Train Valve Arrangements BA1 TRAIN AT WATF Initial Second Third Vessel Vessel Vessel Sequence Sequence Sequence Lead Vessel VSL-151 VSL-152 VSL-153 Lag Vessel VSL-152 VSL-153 VSL-151 Polish Vessel VSL-153 VSL-151 VSL-152 VALVE ID VALVE POSITION V-150 CLOSED CLOSED OPEN V-151 OPEN CLOSED CLOSED V-152 CLOSED OPEN CLOSED V-153 OPEN OPEN OPEN V-154 OPEN CLOSED OPEN V-155 OPEN OPEN OPEN V-157 CLOSED CLOSED OPEN V-158 OPEN OPEN CLOSED V-159 OPEN OPEN OPEN V-162 OPEN CLOSED CLOSED V-169 CLOSED OPEN CLOSED V-180 CLOSED OPEN OPEN Note: After the third sequence, the valve arrangement restores the initial vessel sequence, and the process starts over.
Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 2 of 2
Table 8 Revision 0 Preparer: J. Lux; Date: 5/20/22 In-Process Groundwater Monitoring Locations Reviewer: E. Dulle; Date: 9/9/22 Remediation Monitoring Plume Segment Uranium DTW Area Location 02W27 Q 02W30 A Q 02W40 Q Q 02W41 A Q 02W42 A Q Sandstone B 02W47 Q 1316R Q TMW01 A Q TMW08 A Q BA1A TMW25 A Q 02W03 Q Q 02W28 A Q 02W39 A Q 1315R Q Q Transition Zone 1404 Q Q 1405 Q Q TMW07 A Q 1412 Q Q 1413 Q Q 02W04 A Q South of GEBA102 02W32 Q Q TMW13 Q Q 02W07 Q Q North of GEBA102 / 02W08 Q Q South of GEBA103 02W14 A Q 02W19 Q Q BA1B 02W18 A Q 02W37 A Q North of GEBA103 /
02W38 A Q South of GEBA104 02W44 Q Q 1410 Q Q 02W43 A Q North of GEBA104 1411 Q Q MWWA09 Q Q 1206NORTH MWWA03 Q Q Cimarron Environmental Response Trust Facility Decommissioning Plan Rev 3 Page 1 of 2
Table 8 Revision 0 Preparer: J. Lux; Date: 5/20/22 In-Process Groundwater Monitoring Locations Reviewer: E. Dulle; Date: 9/9/22 Remediation Monitoring Plume Segment Uranium DTW Area Location T62 Q Q T63 Q Q T64 Q Q T65 Q Q T66 A Q T68 Q Q T69 A Q WAA U>DCGL T72 Q Q T75 A Q T76 A Q T77 A Q T79 A Q T84 A Q T104 Q Q T105 Q Q 1351 Q Q 1352 Q Q WUBA3 1356 Q Q 1358 Q 1359 A Q Notes:
DTW measurement frequency for the first 3 months of operation is in Section 8.6.1.
DTW depth to water Q quarterly A annually Cimarron Environmental Response Trust Facility Decommissioning Plan Rev 3 Page 2 of 2
Table 8 Revision 0 Prepare: J. Wilson; Date: 10/27/21 Reviewer: E. Dulle; Date: 09/09/22 Water Treatment In-Line Monitoring Flow Instrument Sampled Material pH Appendix Drawing (gpm) ID Tank 101 Influent X AE100 P115 SHT 1 - D1 (pre-acidification)
WA Train Influent X FIT100 P115 SHT 2 - D5 (post-acidification) X AE101 P115 SHT 2 - D5 Tank 105 Influent (pre- J-3 X AE130 P115 SHT 3 - D2 acidification)
BA1 Train Influent X FIT150 P115 SHT 4 - D6 (post-acidification) X AE151 P115 SHT 4 - D5 Outfall 001 X FIT103 P115 SHT 5 - D5 Note: "Sample IDs" are not required for real-time in-line measurements.
gpm - gallons per minute Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 1 of 1
Table 8 Revision 0 Preparer: A. Anstaett; Date: 09/29/21 Treatment System Monitoring - Weekly Sampling Reviewer: E. Dulle; Date: 09/09/22 pH U-235 & 238 Nitrate Fluoride Tc-99 by Sample Port Process Sampled Material Sample ID Appendix Drawing (field) by EPA 200.8 by EPA 353.2 by EPA 300.0 HASL 300 ID WA Train Influent (pre-acid addition) WATF Pre Acid/S1-1 X X X S1-1 P115 SHT 2 - E7 WA Train Influent (post-acid addition) WATF1 Post Acid/S1-2 X S1-2 P115 SHT 1 - E5 First Cycle WATF1 Lead Eff/S1-3 X X S1-3 P115 SHT 2 - D4 WA Train Lead Vessel Effluent Second Cycle WATF1 Lead Eff/S1-4 X X S1-4 P115 SHT 2 - D3 WATF WA Train Third Cycle WATF Lead EFF/S1-5 X X S1-5 P115 SHT 2 - D3 Ion Exchange Skid First Cycle WATF1 Lag Eff/S1-4 X X S1-4 J-3 P115 SHT 2 - D3 for Western Area WA Train Lag Vessel Effluent Second Cycle WATF1 Lag Eff/S1-5 X X S1-5 P115 SHT 2 - D3 Groundwater Third Cycle WATF1 Lag Eff/S1-3 X X S1-3 P115 SHT 2 - D4 First Cycle WATF1 Polish Eff/S1-5 X X X S1-5 P115 SHT 2 - D3 WA Train Polish Vessel Second Cycle WATF1 Polish Eff/S1-3 X X X S1-3 P115 SHT 2 - D4 Effluent Third Cycle WATF1 Polish Eff/S1-4 X X X S1-4 P115 SHT 2 - D3 BA Train Influent (pre-acid addition) WATF BA1 Pre Acid/S2-1 X X X S2-1 P115 SHT 4 - E7 BA Train Influent (post-acid addition) WATF BA1 Post Acid/S2-2 X S2-2 P115 SHT 4 - E5 First Cycle WATF BA1 Lead Eff/S2-3 X X S2-3 P115 SHT 4 - D5 WATF BA Train BA Train Lead Vessel Effluent Second Cycle WATF BA1 Lead Eff/S2-4 X X S2-4 P115 SHT 4 - D4 Ion Exchange Skid Third Cycle WATF BA1 Lead Eff/S2-5 X X S2-5 P115 SHT 4 - D4 for BA1 First Cycle WATF BA1 Lag Eff/S2-4 X X S2-4 J-3 P115 SHT 4 - D4 Groundwater at BA Train Lag Vessel Effluent Second Cycle WATF BA1 Lag Eff/S2-5 X X S2-5 P115 SHT 4 - D4 WATF (see Note) Third Cycle WATF BA1 Lag Eff/S2-3 X X S2-3 P115 SHT 4 - D5 First Cycle WATF BA1Polish Eff/S2-5 X X X S2-5 P115 SHT 4 - D3 BA Train Polish Vessel Effluent Second Cycle WATF BA1 Polish Eff/S2-3 X X X S2-3 P115 SHT 4 - D5 Third Cycle WATF BA1 Polish Eff/S2-4 X X X S2-4 P115 SHT 4 - D4 Effluent WATF Effluent in Tank 102* WATF Effluent X X X X X S-WAE J-3 P115 SHT 5 - D5 Notes: Samples to be collected the first business day of each week.
First Cycle Vessel configuration before changeout and after 3rd, 6th, etc. changeout Second Cycle Vessel configuration after 1st, 4th, etc. changeout Third Cycle Vessel configuration after 2nd, 5th, etc. changeout
- The WATF effluent will initially be sampled on a weekly basis; once consistent compliance with discharge criteria has been demonstrated, the WATF effluent sampling frequency will be reduced to semi-monthly.
Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 1 of 1
Preparer: J Lux; Date: 05/20/22 Table 8 Revision 0 Reviewer:E. Dulle; Date: 09/09/22 Discharge Injection System Monitoring Instrument/
Flow pH U-235/U-238 Nitrate Fluoride Location Sample ID Sample Port Appendix Drawing (gpm) by EPA 4500 by EPA 200.8 by EPA 300.0 by EPA 300.0 ID Western Area & X FIT-103 P115 BA1 Combined Outfall 001 J-3 X X X X S-WAE SHT5 - D5 Discharge GWI-BA1-01A X FT-2101 GWI-BA1-02A X FT-2102 BA1 Injection GWI-BA1-03A X FT-2103 I-4 P105 GWI-BA1-04 X FT-2104 For All 4 Wells X X X X S-BAI Western Area X FT-1101 P104 GWI-WU-01A I-4 Injection X X X X S-WAI P103 Notes: Discharge samples are collected on the first business day of the month and the first business day following the 14th day of the month.
Discharge monitoring reports to be submitted by the 15th of each month.
gpm - gallons per minute COC - contaminant of concern Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 1 of 1
Preparer: A. Anstaett; Date: 09/29/21 Table 8 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Spent Resin Mixture Sampling Sampled Material Sample ID BA1-01-01 BA1-01-02 1st Batch of Spent Resin BA1-01-XX Resin Mixture from Treatment Skid for BA1-02-01 the Burial Area #1 2nd Batch of Spent BA1-02-02 Resin BA1-02-XX WA1-01-01 WA1-01-02 1st Batch of Spent Resin WA1-01-XX Resin Mixture from the Treatment Skid WA1-02-01 for the Western Area 2nd Batch of Spent WA1-02-02 Resin WA1-02-XX Notes: 1. All samples will be analyzed for U-235 & U-238 by EPA 200.8.
- 2. Once homogeneity of uranium in processed resin has been established, one sample per resin vessel will be collected for laboratory analysis.
Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 1 of 1
Table 8 Revision 0 Preparer: J. Lux, Date: 9/20/22 Evaluation of Discharge Concentrations Reviewer: A. Anstaett, Date: 9/21/22 With 10 CFR 20.2001 Effluent Limits From Decommissioning Plan - Rev 3, Figure 8-3 Flow Rate (gpm) Maximum Concentration WA Groundwater - 107 Uranium (µg/L) - 159 Tc-99 (ng/L) - 1.26 BA1 Groundwater - 100 Uranium (µg/L) - 1018 Tc-99 (ng/L) - 0 Table 8-7(a) - Combined Influent Concentration Calculation WA Groundwater BA1 Groundwater Combined Influent Mass per Minute Mass per Minute Mass per Minute Concentration
(µg) (µg) (µg) (µg/L)
Uranium 64309.14 384804 449,113 574 Tc-99 5.10E-01 0.00E+00 5.10E-01 6.51E-04 Table 8-7(b) - Determination of Effluent Concentration Influent (Max)1 Effluent (Max)3 Radionuclide 2 (ug/L) % of mass pCi/ug (pCi/L) (ug/L) (pCi/L)
Total U 574 5 U-238 9.79E-01 3.33E-01 1.87E+02 4.90E+00 1.63E+00 Th-234 1.87E+02 1.87E+02 Pa-234 1.87E+02 1.87E+02 U-235 2.10E-02 2.14E+00 2.58E+01 1.05E-01 2.25E-01 Th-231 2.58E+01 2.58E+01 U-234 1.40E-04 6.19E+03 4.97E+02 7.00E-04 4.33E+00 Tc-99 6.51E-04 1.71E+04 1.12E+01 6.51E-04 1.12E+01 Notes:
1 Assumes that uranium daughters are in secular equilibrium with the parent in the influent groundwater.
Thorium is typically insoluble; it is unlikely that there will be measurable thorium in influent or effluent.
2 Assumes U-235 enrichment of BA1 is 1.3%, of WA groundwater is 2.9%, and combined influent is 2.1%
% of mass is from Determination of Conservative U-235 Enrichment Levels for Groundwater at Cimarron Site, Enercon Service, Inc., August 17, 2017 (ML17303A788) 3 Assumes 5 ug/L uranium in effluent; no uranium daughters or Tc-99 are captured by ion exchange resin.
Table 8-7(c) - Effluent Evaluation Effluent Limit Effluent Effluent Half Life Radionuclide (10 CFR 20.2001) Concentration Concentration (years) (pCi/L) (pCi/L) / Limit U-238 4.51E+09 3.00E+02 1.63E+00 5.44E-03 Th-234 6.60E-02 5.00E+03 1.87E+02 3.75E-02 Pa-234 2.23E-06 3.00E+04 1.87E+02 6.24E-03 U-235 7.10E+08 3.00E+02 2.25E-01 7.49E-04 Th-231 2.91E-03 5.00E+04 2.58E+01 5.16E-04 U-234 2.47E+05 3.00E+02 4.33E+00 1.44E-02 Tc-99 2.11E+05 6.00E+04 1.12E+01 1.86E-04 Sum of Fractions 0.07 Note:
gpm = gallons per minute µg = microgram ng = nanogram L = Liter pCi = picoCurie Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 1 of 1
Preparer: J. Lux; Date: 05/20/22 Table 8 Revision 0 Reviewer: E. Dulle; Date: 09/09/22 Post-Remediation Groundwater Monitoring Locations Monitoring Area Uranium Tc99 Location 02W28 X BA1A 1315R X Transition Zone 1412 X 1413 X 02W08 X 02W19 X BA1B 1410 X 02W43 X 1411 X MWWA03 X 1206NORTH MWWA09 X T62 X T104 X WAA U>DCGL T105 X T68 X 1351 X WUBA3 1356 X 1336A X Uranium Pond #2 1402 X 1346 X Cimarron Environmental Response Trust Facility Decommissioning Plan - Rev 3 Page 1 of 1
Table 16 Revision 0 Preparer: E. Dulle; Date: 09/16/22 Pre-Construction Cost Estimate Reviewer: B. Weis; Date: 09/23/22 Description Q3-Q4 2022 2023 2024 1 License Compliance 1a EPM $80,000 $165,000 $165,000 1b Enercon $250,000 $500,000 $500,000 1c Burns & McDonnell $40,000 $85,000 $85,000 1d Annual Environmental $8,000 $15,000 $15,000 2 NRC Fees $400,000 $800,000 $800,000 3 Decommissioning 3a EPM $60,000 $120,000 $120,000 3b Burns & McDonnell D. Plan Revisions $50,000 $100,000 RAI Responses $100,000 $150,000 BA1 Redox Evaluation $50,000 $100,000 $100,000 Site Maintenance $80,000 $160,000 $160,000 Final Design $460,000 Prepare Requests for Bids $55,000 $55,000 Procurement (Bidding & Contracting) $35,000 $140,000 Project Execution Planning $125,000 Other (Permitting, Utilities, PM) $63,000 $125,000 $125,000 3c Enercon $120,000 $240,000 $240,000 3d Veolia D. Plan Revisions $60,000 $60,000 RAI Responses $25,000 Final Design $740,000 Prepare Requests for Bids $76,000 $76,000 Response to RFIs (Bidding) $122,000 Procurement (Final negotiations & Award) $121,000 4 ODEQ Agency Fees 4a ODEQ Fees (includes OPDES Permit Fees) $15,000 $30,000 $30,000 5 Total Preconstruction Phase Costs $1,376,000 $4,041,000 $2,979,000 Facility Decommissioning Plan - Rev 3 Page 1 of 1
Table 16 Revision 0 Preparer: E. Dulle; Date: 09/16/22 Construction Cost Estimate Reviewer: B. Weis; Date: 09/23/22 Item Description 2025 1 License Compliance 1a EPM $200,000 1b Enercon $450,000 1c Burns & McDonnell $80,000 2 NRC Fees $400,000 3 Decommissioning 3a EPM Support $145,000 3b Enercon Support $250,000 3c Veolia Support Construction & Fabrication Support $430,000 Startup Support $145,000 3d Burns & McDonnell Support Site Maintenance $80,000 Other (Utilities, PM) $65,000 Startup Support $245,000 3e Burns & McDonnell Capital Construction Costs1 i Site Civil Injection & Extraction Wells and Trenches $940,000 Piping & Utilities $3,000,000 Injection Skids $285,000 Other Site Civil (Roads, Drainage, BMPs, Restoration, Survey, etc.) $1,000,000 ii Site Electrical and Controls $1,100,000 iii BARF BARF Civil $330,000 Balance of BARF $520,000 iv WA Treatment Facility WA Treatment Facility Civil and Building $2,200,000 Ion Exchange Skids (2) $2,500,000 Resin Processing Equipment $1,500,000 Balance of WA Treatment Facility $3,300,000 v Direct Capital Construction Costs Subtotal $16,675,000 Facility Decommissioning Plan - Rev 3 Page 1 of 2
Table 16 Revision 0 Preparer: E. Dulle; Date: 09/16/22 Construction Cost Estimate Reviewer: B. Weis; Date: 09/23/22 Item Description 2025 vi General Conditions / CM (25%) $4,168,750 vii Engineering During Construction (10%) $1,668,000 viii Bonds & Permits (1%) $167,000 ix Indirect Captial Construction Costs Subtotal $6,003,750 x Total Capital Construction Cost $22,678,750 4 ODEQ Agency Fees 4 ODEQ Fees (includes OPDES Permit Fees) $36,000 5 Total Construction Phase Costs $25,204,750 1
Facility costs include equipment not specifically listed such as foundations, pavement, earthwork, etc.
2 Although a portion of preconstruction occurs within the first one to two months of 1Q 2025, costs associated with EPM, Enercon, Veolia, and Burns & McDonnell support have been included here for clarity.
Facility Decommissioning Plan - Rev 3 Page 2 of 2
Table 16 Revision 0 Preparer: E. Dulle; Date: 09/16/22 Groundwater Remediation Cost Estimate Reviewer: B. Weis; Date: 09/23/22 Item Description 2026 2027 2028 2029 2030 2031 2032 2033 1 License Compliance 1a EPM $200,000 $170,000 $160,000 $160,000 $160,000 $160,000 $160,000 $160,000 1b Enercon $600,000 $600,000 $600,000 $600,000 $600,000 $600,000 $600,000 $600,000 1c Burns & McDonnell $80,000 $80,000 $80,000 $80,000 $80,000 $80,000 $80,000 $80,000 2 NRC Fees $400,000 $280,000 $240,000 $240,000 $240,000 $240,000 $240,000 $240,000 3 Decommissioning 3a EPM Support $140,000 $125,000 $120,000 $120,000 $120,000 $120,000 $120,000 $120,000 3b Remediation / Treatment Labor and Support $600,000 $600,000 $600,000 $600,000 $600,000 $600,000 $600,000 $600,000 3c Treatment Facility Electric $200,000 $200,000 $200,000 $200,000 $200,000 $200,000 $200,000 $200,000 3d IX Resin $300,000 $250,000 $150,000 $150,000 $150,000 $150,000 $150,000 $150,000 3e 6M HCl - Uranium System pH Adjustment $200,000 $200,000 $200,000 $200,000 $200,000 $200,000 $200,000 $200,000 3f Spent Resin Disposal $150,000 $150,000 $150,000 $150,000 $150,000 $150,000 $150,000 $150,000 3g Maintenance Allowance (Burns & McDonnell) $80,000 $80,000 $80,000 $80,000 $80,000 $80,000 $80,000 $80,000 3h In-Process Groundwater Monitoring $30,000 $30,000 $30,000 $30,000 $30,000 $30,000 $30,000 $30,000 3i In-Process Treatment Monitoring $150,000 $150,000 $150,000 $150,000 $150,000 $150,000 $150,000 $150,000 4 ODEQ Fees 4a ODEQ Fees (includes OPDES Permit Fees) $36,000 $36,000 $36,000 $36,000 $36,000 $36,000 $36,000 $36,000 5 Total Year Operational Phase Costs $3,166,000 $2,951,000 $2,796,000 $2,796,000 $2,796,000 $2,796,000 $2,796,000 $2,796,000 Facility Decommissioning Plan - Rev 3 Page 1 of 2
Table 16 Revision 0 Preparer: E. Dulle; Date: 09/16/22 Groundwater Remediation Cost Estimate Reviewer: B. Weis; Date: 09/23/22 Item Description Subtotal / Total 2034 2035 2036 2037 Q1-Q2 2038 1 License Compliance 1a EPM $160,000 $160,000 $160,000 $160,000 $80,000 $2,050,000 1b Enercon $600,000 $600,000 $600,000 $600,000 $300,000 $7,500,000 1c Burns & McDonnell $80,000 $80,000 $80,000 $80,000 $40,000 $1,000,000 2 NRC Fees $240,000 $240,000 $240,000 $240,000 $120,000 $3,200,000 3 Decommissioning 3a EPM Support $120,000 $120,000 $120,000 $120,000 $60,000 $1,525,000 3b Remediation / Treatment Labor and Support $600,000 $600,000 $600,000 $300,000 $300,000 $7,200,000 3c Treatment Facility Electric $200,000 $200,000 $200,000 $100,000 $100,000 $2,400,000 3d IX Resin $150,000 $150,000 $150,000 $150,000 $100,000 $2,150,000 3e 6M HCl - Uranium System pH Adjustment $200,000 $200,000 $200,000 $100,000 $100,000 $2,400,000 3f Spent Resin Disposal $150,000 $150,000 $150,000 $150,000 $100,000 $1,900,000 3g Maintenance Allowance (Burns & McDonnell) $80,000 $80,000 $80,000 $80,000 $40,000 $1,000,000 3h In-Process Groundwater Monitoring $30,000 $30,000 $30,000 $30,000 $20,000 $380,000 3i In-Process Treatment Monitoring $150,000 $150,000 $150,000 $150,000 $100,000 $1,900,000 4 ODEQ Fees 4a ODEQ Fees (includes OPDES Permit Fees) $36,000 $36,000 $36,000 $36,000 $18,000 $450,000 5 Total Year Operational Phase Costs $2,796,000 $2,796,000 $2,796,000 $2,296,000 $1,478,000 $35,055,000 Facility Decommissioning Plan - Rev 3 Page 2 of 2
Table 16 Revision 0 Preparer: E.Dulle; Date: 09/23/22 Post Remediation Cost Estimate Reviewer: B. Weis; Date: 09/28/22 Subtotal /
Item Description Q3-Q4 2038 2039 2040 2041 2042 Q1-Q2 2043 Total 1 License Compliance 1a EPM $100,000 $200,000 $200,000 $100,000 $50,000 $25,000 $675,000 1b Enercon $163,962 $327,924 $327,924 $327,924 $163,962 $81,981 $1,393,677 1c Burns & McDonnell $20,000 $40,000 $40,000 $40,000 $40,000 $20,000 $200,000 2 NRC Fees $100,000 $200,000 $200,000 $200,000 $200,000 $100,000 $1,000,000 3 Decommissioning 3a EPM Support $70,000 $140,000 $140,000 $100,000 $50,000 $25,000 $525,000 3b Maintenance Allowance (Burns & McDonnell) $40,000 $80,000 $80,000 $80,000 $80,000 $40,000 $400,000 3c Dismantle and Disposal of Material Sample & Analyze Resin & Filter Media $0 $0 $10,000 $0 $0 $0 $10,000 Demobilize/Ship Filter Systems $0 $0 $300,000 $0 $0 $0 $300,000 Dispose/Ship Resin $0 $0 $100,000 $0 $0 $0 $100,000 Demobilize/Ship Resin Processing System $0 $0 $200,000 $100,000 $0 $0 $300,000 Demobilize/Ship Ion Exchange Systems $0 $0 $0 $300,000 $0 $0 $300,000 Demobilize/Ship Pumps, Tanks, Etc. $0 $0 $0 $350,000 $0 $0 $350,000 Remove/Ship Wells, Piping, Utilities $0 $0 $0 $200,000 $0 $0 $200,000 3d Post-Remediation Groundwater Monitoring $10,550 $21,100 $10,550 $0 $0 $0 $42,200 3e Final Status Survey Plan $0 $0 $100,000 $0 $0 $0 $100,000 3f Final Status Survey $0 $0 $0 $250,000 $0 $0 $250,000 3g Final Status Survey Report $0 $0 $0 $0 $75,000 $0 $75,000 3h License Termination $0 $0 $0 $0 $0 $50,000 $50,000 4 ODEQ Fees 4a ODEQ Fees (includes OPDES Permit Fees) $15,000 $30,000 $30,000 $30,000 $30,000 $15,000 $150,000 5 Total Year Operational Phase Costs $519,512 $1,039,024 $1,738,474 $2,077,924 $688,962 $356,981 $6,420,877 Facility Decommissioning Plan - Rev 3 Page 1 of 1
Table 16-5 Preparer: E.Dulle; Date: 09/23/22 Cost Summary - Rev 0 Reviewer: B. Weis; Date: 09/28/22 Table 16-5a Description 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 Without Escalation (Costs are in 2022 dollars)
License Compliance $378,000 $765,000 $765,000 $730,000 $880,000 $850,000 $840,000 $840,000 $840,000 $840,000 $840,000 NRC Fees $400,000 $800,000 $800,000 $400,000 $400,000 $280,000 $240,000 $240,000 $240,000 $240,000 $240,000 Decomissioning $583,000 $2,446,000 $1,384,000 $24,038,750 $1,850,000 $1,785,000 $1,680,000 $1,680,000 $1,680,000 $1,680,000 $1,680,000 ODEQ Fees $15,000 $30,000 $30,000 $36,000 $36,000 $36,000 $36,000 $36,000 $36,000 $36,000 $36,000 Total Annual Cost $1,376,000 $4,041,000 $2,979,000 $25,204,750 $3,166,000 $2,951,000 $2,796,000 $2,796,000 $2,796,000 $2,796,000 $2,796,000 Table 16-5b With 3% Per Annum Escalation / Without Contingency Year ---> 1 2 3 4 5 6 7 8 9 10 License Compliance $378,000 $787,950 $811,589 $797,691 $990,448 $985,383 $1,003,004 $1,033,094 $1,064,087 $1,096,009 $1,128,890 NRC Fees $400,000 $824,000 $848,720 $437,091 $450,204 $324,597 $286,573 $295,170 $304,025 $313,146 $322,540 Decomissioning $583,000 $2,519,380 $1,468,286 $26,267,791 $2,082,191 $2,069,304 $2,006,008 $2,066,188 $2,128,174 $2,192,019 $2,257,780 ODEQ Fees $15,000 $30,900 $31,827 $39,338 $40,518 $41,734 $42,986 $44,275 $45,604 $46,972 $48,381 Total Annual Cost $1,376,000 $4,162,230 $3,160,421 $27,541,911 $3,563,361 $3,421,018 $3,338,570 $3,438,727 $3,541,889 $3,648,146 $3,757,590 Initial Available Funds (7/1/2022) $71,462,410 Year-End Available Funds $70,443,722 $66,985,929 $64,495,367 $37,598,410 $34,411,033 $31,334,126 $28,308,897 $25,153,259 $21,862,902 $18,433,385 $14,860,129 Table 16-5c With 3% Per Annum Escalation / With 25% Contingency Total Annual Cost $1,720,000 $5,202,788 $3,950,526 $34,427,389 $4,454,201 $4,276,272 $4,173,213 $4,298,409 $4,427,361 $4,560,182 $4,696,988 Initial Available Funds (7/1/2022) $71,462,410 Year-End Available Funds $70,099,722 $65,597,932 $62,303,385 $28,499,030 $24,329,819 $20,296,845 $16,326,601 $12,191,458 $7,886,011 $3,404,689 ($1,258,252)
Notes:
$71,189,722 is the actual amount of funding available in the Federal, State and Standby Trust Accounts.
Table 16-5a was created by taking the costs from Tables 16-4 through 16-4 (adjusted the values for the 2nd half of 2022).
For all tables, Year-End Available Funds were calculated by adding 1% to the previous year's Year-End Available Funds and subtracting the year's Total Annual Cost.
For Table 16-5b, the Total Annual Cost in 2022 dollars is escalated by 3% per annum by (1.03^n, where "n" is the number of years).
For Table 16-5c, the Total Annual Cost represents the Total Annual Cost from Table 2 with a 25% contingency added.
Facility Decommissioning Plan - Rev 3 Page 1 of 2
Table 16-5 Preparer: E.Dulle; Date: 09/23/22 Cost Summary - Rev 0 Reviewer: B. Weis; Date: 09/28/22 Table 16-5a Description 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 Without Escalation (Costs are in 2022 dollars)
License Compliance $840,000 $840,000 $840,000 $840,000 $840,000 $703,962 $567,924 $567,924 $467,924 $253,962 $126,981 NRC Fees $240,000 $240,000 $240,000 $240,000 $240,000 $220,000 $200,000 $200,000 $200,000 $200,000 $100,000 Decomissioning $1,680,000 $1,680,000 $1,680,000 $1,680,000 $1,180,000 $1,040,550 $241,100 $940,550 $1,380,000 $205,000 $115,000 ODEQ Fees $36,000 $36,000 $36,000 $36,000 $36,000 $33,000 $30,000 $30,000 $30,000 $30,000 $15,000 Total Annual Cost $2,796,000 $2,796,000 $2,796,000 $2,796,000 $2,296,000 $1,997,512 $1,039,024 $1,738,474 $2,077,924 $688,962 $356,981 Table 16-5b With 3% Per Annum Escalation / Without Contingency 11 12 13 14 15 16 17 18 19 20 21 License Compliance $1,162,756 $1,197,639 $1,233,568 $1,270,575 $1,308,693 $1,129,652 $938,692 $966,853 $820,508 $458,684 $236,222 NRC Fees $332,216 $342,183 $352,448 $363,022 $373,912 $353,035 $330,570 $340,487 $350,701 $361,222 $186,029 Decomissioning $2,325,513 $2,395,278 $2,467,137 $2,541,151 $1,838,402 $1,669,777 $398,502 $1,601,223 $2,419,838 $370,253 $213,934 ODEQ Fees $49,832 $51,327 $52,867 $54,453 $56,087 $52,955 $49,585 $51,073 $52,605 $54,183 $27,904 Total Annual Cost $3,870,318 $3,986,427 $4,106,020 $4,229,201 $3,577,093 $3,205,420 $1,717,348 $2,959,636 $3,643,652 $1,244,342 $664,090 Initial Available Funds (7/1/2022)
Year-End Available Funds $11,138,412 $7,263,369 $3,229,983 ($966,919) ($4,553,681) ($7,804,638) ($9,600,033) ($12,655,669) ($16,425,878) ($17,834,479) ($18,676,913)
Table 16-5c With 3% Per Annum Escalation / With 25% Contingency Total Annual Cost $4,837,897 $4,983,034 $5,132,525 $5,286,501 $4,471,366 $4,006,775 $2,146,685 $3,699,545 $4,554,565 $1,555,428 $830,112 Initial Available Funds (7/1/2022)
Year-End Available Funds ($6,108,732) ($11,152,854) ($16,396,908) ($21,847,378) ($26,537,218) ($30,809,366) ($33,264,145) ($37,296,331) ($42,223,859) ($44,201,526) ($45,473,653)
Facility Decommissioning Plan - Rev 3 Page 2 of 2