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TaarP~a ~rir~ixs inc. <br />July 31,1992 <br />CERTIFIED #P175046660 <br />John M. DeMichiei <br />District Manager <br />U.S. Dept of Iabor <br />Mine Safety & Health Administration <br />P.O. Boa 25367 <br />Denver, CO 80225 <br />Dear Mr. DeMichiei: ~ <br />Subject Annual Impoundment Report Coyote Dam (I.D. No. 1211-CO-09-07.838-01) <br />Trapper Mine (05-02838) <br /> <br />The structural integrity of Coyote Dam has remained unchanged. AD appurtenant swcttires includmg trash <br />taste, decant' values and discharge CMP aze in place and operating as designed. Thera have been no modi- <br />fications to the swcture in the past year. <br />Water level elevations for the past year have fluctuated from a high of 6301.9 fi oa 7/30/91 to a low of txs <br />than 6298.4 fi oa 7/LR/92. <br />The neazly dry condition of the pond allowed our surveying department to devebp a more aowraate sedi- <br />ment vohtme. The results of this survey indicate that the current runoff ppacity to the crest of the emer- <br />gency sp~way u approximately 95 acre-feet and that the actual sediment volume in the pond is 40.9 acre- <br />feet, a reduction of 53 acre-feet from the volume reported in 1991. <br />If you have nay quesdoac regarding this report, please~rail-. <br />./ C 111. <br />A _ .-ii-. <br />$ 20537 W <br />W CS M. MBtleTn <br />N'r t; ^~ ~,{ p ' f Engineer <br />9~'• 'SrONAI f'?~~ ~ O PE No. 20537 <br />(< ~N~~~~~~0~ <br />OF ~0~, <br />jnMrst~iviut3tl <br />w wy~ev. <br />ru< <br />P.O. Box 187 Craig, Colorado 81626 (303) 824-4401 <br />