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~1 <br />~~I ~I~~I~'I~~~~~ ~~~ <br />999 <br />TRAPPER MINING INC. <br />July 31,1992 <br />CERTIFIED #P175046660 <br />John M. DeMichiei <br />Dtstria Manager <br />U.S. Dept of Labor <br />Mine Safety & Health Administration <br />P.O. Box 75367 <br />Denver, CO 80275 <br />Dear Mr. DeMichiee <br />Subject Annual Impoundment Report Coyote Dam (I.D. No. 1211-CO-09.02838-01) <br />Trapper Mine (05-02838) <br />The swctural integrity at Coyote Dam has remained unchanged. All appurtenant swctures inUuding wash <br />racks, decant, values and discharge CMP are in place and operating as designed. There have been no modi- <br />5cations to the swaure in the past year. <br />Water level elevations for the past year have fluctuated from a high oC 6301.9 h on 7/30!91 to a krw of less <br />than 6298.4 h on 7R8(92 <br />The nearly dry wndition of the pond allowed our surveying department to develop a more aavrate sedi- <br />ment volume. The results of this survey indicate that the current runoff rapacity to the nest of the emer- <br />genry spilhvayts approximately 95 acre-feet and that the aaual sediment volume in the pond u 40.9 aae- <br />feet, areduction of 5.3 acre-feet from the volume reported in 1991. <br />If you have arty questions regarding this report, please caLL <br />P~~S •M r ~ATlE' sin ly, <br />~ • L~Mr+~ <br />W• <br />'$ 20537 ¢~ <br />~ ;~ _: pJ mes M. Matters <br />9>' ~s. ro„x• ~r~: P hief Engineer <br />.' ~ . •~O~' CO PE No. 20537 <br />F CO <br />b <br />JMS 1J <br />e W. Apxav <br />cis <br />P.0. Box 187 Craig, Colorado 81626 (303) 824-4401 <br />