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• Copies of the summary analytical laboratory test results are available in the <br />pages following this text. Each ground water monitoring well was sampled <br />in accordance with the "permit procedure". The "B" designation following <br />the well identification indicates that the laboratory sample was obtained <br />after initial field sampling, well purging and a subsequent (second) field <br />sampling. (Again, the lack of available water in well AMW-2 limited the <br />ability to properly purge the well. Consequently, some of these samples <br />may show an "A" designation.) The 2003 ground water monitoring test <br />results remain consistent with the results from previous water quality <br />analyses in that there were no confirmed statistical exceedences. <br />The ground water flow, to the extent it has been documented in the azea of <br />the Keenesburg Mine property, trends down-gradient to the northeast. <br />Recharge of the aquifer in the "spoil azea" continues to be limited to a single <br />source, the localized infiltration of precipitation to the subsurface. There is <br />no evidence of any significant ground water rechazge to the site from the <br />neazby Ennis Draw fluvial ground water system. Ground water elevations in <br />the sampled Ennis Draw wells close to the Keenesburg Mine site remain <br />• significantly higher than in either the spoil monitoring well (SMW-2) or the <br />ash monitoring wells (AMW-1 and AMW-2). <br />CEC continues to believe that no adverse affect on the overall hydrologic <br />balance of the Keenesburg Mine site should result from a continuation of <br />the ash disposal operation, from the limited addition of mine waste rock to <br />the B-Pit ash disposal, or from the continuing reclamation operations. <br />Ground water levels in the former coal extraction areas aze expected to <br />recover to their approximate pre-mining levels following the conclusion of <br />all CEC operations (see McWhorter report, Appendix I-1 to Permit C-1981- <br />028). Treatment of either the ground or surface waters at the Keenesburg <br />Mine site should not be necessary. <br />Notice: In the course of applying for, and obtaining approval to dispose of <br />mine waste rock in the ash disposal pit (B-Pit) at the Keenesburg Mine site, <br />CEC submitted, and received CDPHE approval for the currently revised <br />Ground-Water Monitoring Plan. As a requirement of the approval, CEC is <br />providing notice that the data developed under the Monitoring Plan for 2003 <br />has been placed in the operating records at the site office. This is the sixth <br />such notice in response to the requirement. <br />AHR-2003 -53- <br />