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iiiiiiiiiiiiiiiiiu <br />999 <br />STATE OF COLORADO <br />DIVISION OF MINERALS AND GEOLOGY <br />Department of Natural Resources <br />I J 13 Sherman 51.. Room '_ 1 S <br />Cenvcr, CG 60?0} <br />Phone:(A)31 A65-}55? <br />FAS' (1031 8 1'~B I06 <br />March 19, 1993 <br />TO: Janet Hinns ; ; <br />FM: Shawn Smith ~~ <br />Re: 1992 Annual Hydrology Review <br />McClane and Munger Canyon Mines (C-SO-004 and C-81-020) <br />Dear Janet: <br />oe cow <br />R~ ~~ <br />N° . <br />.a•r~• <br />n. <br />Roy Romer <br />Governor <br />~Nichael B. Lung <br />Division Direnor <br />I have reviewed the following documents for the AHR review for <br />McClane and Munger Canyon: <br />1988 Annual Hydrology Report <br />1989 Annual Hydrology Report <br />1990 Annual Hydrology Report <br />1991 Annual Hydrology Report <br />Midterm Review 4/91 and Response 6/91 <br />Findings Document 1/92 <br />Permit sections on Hydrology, geology, monitoring program <br />Probable Hydrologic Consequences - Appendix N with maps <br />Figures: 2.5-1 through 2.5-6 and 4.2-3. <br />Hackaround <br />Both the McClane and Munger Mines have complied with their water <br />monitoring program in monitoring frequency and parameters. The <br />requirements for the mines are outlined in Rule 4.05.13 and <br />Stipulation No.3 in the McClane permit. In brief, the water <br />balance, mine consumption of water, location and amount of inflow <br />have been noted in the 1992 AHR for the McClane Mine as Stipulation <br />3 dictates. <br />The Munger site has remained inactive since 1984, therefore there <br />is only one surface water site and no ground water sites monitored. <br />Dry site conditions also account for the lack of monitoring systems <br />at this site. <br />Surface water Monitoring <br />All surface water sites, SW-1, SW-2, SW-3, SW-5 and SW-8 were <br />monitored quarterly for the required parameters of a full suite <br />analysis. Often these wells were dry for a quarter due to the <br />intermittent and ephemeral nature of the McClane and Munger creeks. <br />SW-1 and SW-8, both in the East Salt Creek (above and below the <br />McClane Mine respectively) show data for all four quarters since <br />this creek is perennial in nature. <br />