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STATE OF COLORADO i~ <br />DIVISION OF MINERALS AND GEOLOGY <br />Department of Natural Resources <br />1313 Sherman 51., Room 215 <br />Denver, Colorado 80203 <br />Phone: 1303) 866-3567 <br />FA%: (3031 832-8106 <br />DATE: May 7, 1998 <br />TO: Jim Burnell <br /> <br />I~ ROM: 1 <br />Dan Mathews ~ 4 <br />RE: McClane and Munger Canyon Mines, <br /> Permits C-80-004 and C-81-020 <br />1997 Annual Hydrology Report <br />~~~ <br />DEPARTMENT OF <br />NATURAL <br />RESOURCES <br />Roy Romer <br />governor <br />lames 5. lochhead <br />EKecuhve Dbecbr <br />Michael B. long <br />Division Direuor <br />I have completed a preliminary review of the referenced AHR, and I am forwazding a copy for <br />your review of conformance with PHC projections. <br />Munger Canyon Mine was, as usual, in temporary cessation for the entire year. McClane was in <br />temporary cessation during the fourth quarter of 1996, but resumed active status during the first <br />quarter of 1997, and approximately 50,000 tons of coal was produced during the quarter. <br />Although the mine remained in active status for the remainder of the water year, there was no <br />further coal production. <br />Sampling frequencies and analytical parameters were in compliance with permit requirements, <br />with the exception that 1st quarter, 1997 East Salt Creek samples were not obtained because of <br />"extremely thick ice at the sample points." Also, summer storm event flows were sampled on <br />McClane and Munger Creek, but snowmelt flows were not sampled because the streams were dry <br />when checked. Due the relatively small, low elevation watersheds, snowmelt flow is a very <br />brief phenomenon in the creeks (I don't believe I've ever observed it). <br />I have attached documentation regarding the big storm events of August and September, which <br />was not included in the AHR. <br />Let me know if you need any further information for your review. <br />Thanks. <br />cc: Larry Routten <br />des\97ahr.mem <br />