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Serving Our Clients Since 1980 <br />estern <br />Engineering <br />W <br />Inc. ~ WC <br />III IIIIIIIIIIIII III <br />Engi <br />Environmental Mining Water Resources <br />611 Skyline Road• Laramie. Wyoming 82070 • (307) 742-0031 • FAX (307) 721-2913 • E-mail: info rywsvc.laramie.wy.us <br />December 1, 1999 <br />CDPS Permit CO-0032638 <br />Ms. Sandra L. Brown RECEIVED <br />Colorado Division of Minerals and Geology <br />1313 Sherman Street <br />Room 215 DEC 0 61999 <br />Denver, Colorado 80203-2273 Division of MineralsBGeotogy <br />Re: Edna Mine October 1999 Water Report, Impoundment Inspection Reports <br />Dear Ms. Brown: <br />Enclosed is the October water report for CDMG water monitoring sites at the Edna Mine <br />(Permit #CO-0032638). During the October sampling event, there was no flow in the Koll <br />Ditch. The flow at station TR-b is elevated due to a beaver dam located immediately <br />downstream. <br />Enclosed, please find inspection reports for impoundments at the Edna Mine site for the <br />third quarter 1999. All stnlctures appeared to be stable and functioning as designed. <br />Maintenance items were noted with recommendations on the individual inspection reports. <br />Sediment ponds were surveyed to determine sediment capacity. The annual certifications are <br />also included within this package. <br />Please contact me at (307) 742-0031 with any questions or comments yotl have regarding <br />this matter. <br />Sincerely, <br />Steve Linse, P.E. <br />Project Engineer <br />cc: Mr. Brian Gontarek, P& M Coal Mining Company <br />File: 99-144 <br /> OTHER LOCATIONS <br />1849 Tcrta Avenue 1901 Energy Court. Suite 270 701 Antler Drive. Suite 233 <br />Sheridan. Wyoming 82801 Gillene. Wyoming 82718 Casper. Wyoming 82601 <br />(307)672-0761 (307)682-1880 (307)473-2707 <br />FAX (707) 674-4265 FAX (307) 682-2257 FAX (307) 237-0828 <br />E-mail: svwcshrncyberhighsray.net E-mail: svwcgl us'cn.com E-mail. wwccsp r~aol.com <br />