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Tlie general ground water gradient, to the extent that it has been docwnented in the area of the Keenesburg Mine property, trends downgradient to the north-northeast. Recharge of the aquifer in the "spoil area" continues to be limited to a single source, the localized infiltration of precipitation to the subsurface. There is still no evidence of any significant ground water recharge to tl~e site from the Ennis Draw fluvial ground water system. Ground water elevations in those existing Ewiis Draw wells close to the Keenesburg Mine site continue to be sigtuficantly higher than in either the spoil monitor well or the ash monitor wells. CEC continues to believe that no adverse affect on the overall hydrologic balance of the Keenesburg Mine site will result from the continued ash disposal operation (or the addition of mine waste rock to the ash disposal) and/or the reclamation operations, and that ground water levels in the former mined areas would be expected to recover to approximately their pre-mining levels following the conclusion of CEC operations (see McWhorter report, Appendix I-1 to Pern~it C-81-028). CEC does not anticipate that it will be necessary to treat either ground or surface waters at the Keenesburg Mine • site. In the course of applying for, and obtaining approval to dispose of mine waste rock (in the "ash disposal pit") at the Keenesburg Mine site, CEC submitted, and obtained approval for a Ground Water Monitoring Plan from CDPI-IE. As a requirement of the plan, CEC provides notification that data, developed under the Monitoring Plan for the 4°i Quarter, 1998, have been placed in the operating record. This is the first annual notice pertaining to the Monitoring Plan. Since it was approved for implementation just prior to the 4°i Quarter, only that data has been captured in the ]998 Amnial Hydrolobry and Reclamation Report. AHR-1998 -Si- Stipulation #5