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r ~y- . , ~~E cor,~i~~~~~~~~~~~u~~~ <br />Cyprus Yampa Valley Goal Corporation <br />AVd~7 7~+ 29587 Routt County Roatl #27 <br />~+ ~ ~ Y r7 Oak Creek, Colorado 80467 <br />'~ Yampa Valley 303-879-3800 <br />Mr. William Holgate <br />District Manager <br />Mine Safety & Health Administration <br />Coal Mine Health & Safety <br />P.O. Box 25367 <br />Denver, Colorado 80255 <br />Dear Mr. Holgate: <br />Re: Annual Impoundment for Colorado Yamna Coal Comnanv• <br />Mines 1 ~ 2. I.D. No. OS-00302 <br />The following information constitutes the 1992 Annual report for <br />the impoundments listed below as outlined by 77.216-4, 30 CFR. <br />Pond A. I.D. No. 1221-CO-09-00302-01 <br />A. Geometry of the impounding structure <br />1. No changes during the reporting period <br />B. Average and Maximum depths and elevations of impounded water <br />1. Average depth: 10.1 ft. maximum depth: 29.0 ft. <br />2. Average elevation: 6932.5 maximum elevation: 6935.4 <br />C. Volume impounded water <br />1. Approximately 97.2 acre-feet <br />D. Stability of the impounding structure <br />1. No changes during reporting period <br />2. No changes occurring during the reporting period <br />Pond D.. I.D. No. 1211-CO-09-00302-02 <br />A. Geometry of the impounding structure <br />1. No changes during the reporting period <br />B. Average and Maximum depths and elevations of impounded water <br />1. Average depth: 6.9 ft. maximum depth: 7.5 ft. <br />2. Average elevation: 6846 maximum elevation: 6847.1 <br />C. Volume impounded water <br />1. Approximately 38 acre-feet <br />D. Stability of the impounding structure <br />1. No changes during reporting period <br />2. No changes occurring during the reporting period <br />