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I. INTRODUCTION <br />• The Mined Land Reclamation Division (MLRD) transmitted a letter <br />dated March 25, 1986 to Peabody Coal Company (PCC) regarding the <br />Nucla Mine Mid-Term Review. In the course of this review, MLRD <br />scrutinized the permit application, the findings document, the <br />stipulation responses, the revisions to the permit, the monitoring <br />reports and the inspection and enforcement reports. In particular, <br />hydrologic monitoring data were reviewed to assess the hydrology <br />monitoring program and the discussion in the permit of observed and <br />predicted hydrologic impacts. Problems and observations from past <br />inspection reports were also considered. <br /> One of the most important items discussed in the Mid-Term Review <br /> was the requirement to submit an Annual Hydrology Report (AHR). <br /> Upon agreement with the MLRD staff, a submittal deadline of <br /> December 31, 1986 was set (letter dated July 24, 1986 from Mr. <br /> Peter O'Connor (MLRD) to Mr. Jim Lunan (PCC)). This first AHR <br />• would report, interpret, and discuss all surface and around water <br /> data collected at the mine since the beginning of 1980, including <br /> addressing all additional items or concerns brought forth in the <br /> Mid-Term Review. For all intents and purposes, this first AHR was <br /> submitted as Section V, Permit Revision Hydrology of the Nucla Mine <br /> Permit Revision on November 24, 1986. The only aspect of this <br /> Permit Revision which precluded it from being an AHR was that the <br /> data for the period-of-record which were reported and discussed did <br /> not include the last two months of the 1986 Water Year, August and <br /> September. Data for these months have been incorporated into this <br /> report. Where pertinent, the interpretation and discussion of <br /> these data have been revised accordingly. Finally, in a number of <br /> instances, commitments were made in Section V of the Permit <br /> Revision which pertained to hydrology issues or concerns that would <br /> be addressed in this first AHR; all of these commitments have been <br /> met in this AHR. ew\~ CJGv{` r c~pu'~~S S nYlti~ Sv~V~'IM <br />ll <br />• ay 26, 1983 for <br />The Nucla Mine Permit (No. C-81-008} was issued on M <br />1 <br />