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i <br />III IIIIIIIIIIIIIIII STATE OF COLORADO <br />D1Y1510N OF MINERALS AND GEOLOGY <br />Depanmenl of Natural Resources <br />1313 Sherman Si., Room 215 I~y~~ <br />Denver, Colorado 80203 I <br />Phone: 1]031 866-3567 <br />FAX. 1303) 832-8106 <br />DEPARTNIEI~7I' OF <br />NATURAL <br />January 25, 1995 RESOURCES <br />Mr. Jlm Stover Roy ROmer <br />Governor <br />Minrec, Ino• lames S. Lochhead <br />276$ Compass Drive, $ulte 101 Executive Dirmor <br />Grand Junction, CO 81506 Michael B. LOng <br />Division Director <br />R8: 1994 Annual Hydrology Report; Red Canyon Mine; Permit No. C- <br />81-034 <br />Bear Mr. Stover; <br />The Division has reviewed the 1994 Annual Hydrology Report (AHR) <br />for the Red Canyon Mine. All data and summaries have been <br />reviewed. The frequency of monitoring during 1994 has been <br />followed and the Division recognizes the changes made to the report <br />and the additional data collected. <br />In review of the 1992 and 1993 AHRs the Division requested that <br />Ward Creek be sampled for TDS and SAR as predictions regarding <br />these values were made in the Kaman Tempo report and the Probable <br />Hydrologic Consequences (PHC) for the mine. Data for these <br />parameters were collected and will be discussed later in this <br />letter. In addition, the Division requested that water levels be <br />obtained from the wells completed in the E seam. Minrec obtained <br />water levels in all coal seam wells, in addition to the E seam <br />wells. Minrec has requested the Division's approval to abandon and <br />reclaim all coal seam wells except E-1. This request will be <br />discussed later in this letter. The Division has the following <br />observations, comments and recommendations regarding the report. <br />Observations <br />1. The required monitoring frequency as identified on pages 144 <br />and 144a has been complied with. <br />Conductivity values for upper and lower Ward Creek appear to <br />be consistent with previous values. TDS and SAR in Ward Creek <br />has not approached, and is well below, the predicted worst <br />case. <br />3. The Division agrees with the analysis provided by Minrec in <br />the AHR for springs SP-1 and SP-3. <br />