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<br />TRAPPER MINING iNC. <br />III IIIIIIIIIIIIIIII <br />p- 999 <br />CERTIFIED #P546405468 <br />April 22, 1991 <br />APR 2 4 T991 <br />Ms. Kathy Dolan <br />Colorado Dept. of Health <br />Water Quality Control Division <br />4210 East 11th Ave. <br />Denver, CO 80220 <br />Dear Ms. Dolan: <br />Subject: Change in Colorado Wastewater Discharge Permit <br />CO-0032115 -Trapper Mining loc., for Trapper Mine. <br />Trapper Mine is requesting an additional NPDES discharge point to our current NPDES system. During <br />late spring/summer of 1991, Trapper will begin construction of a single sediment pond located in the Far <br />East Buzzard drainage. The pond will provide sediment control for mining, regrading and topsoil replace- <br />ment activities commencing in 1991 in the Far East Buzzard drainage area. As proposed, the discharge pond <br />(NPDES) will not require wet sampling as no pit-generated water will be discharged into the drainage sys- <br />tem. Additionally the construction of this pond will eliminate Trapper's only remaining small area exemp- <br />tion from sediment control. <br />The new discharge point, 014, is located immediately south of our permit boundary in Far East Buzzard <br />drainage. The proposed pond location is in the SW 1/4 of SW 1/4, Section 28, T6N, R91W. The attached <br />map "Drainage Divides of ifie Mine Plan Area and Location of Current Surface Water Sites" (M30A) shows <br />the location of the proposed discharge point and all other NPDES points at Trapper Mine. The design <br />capacity (or the Far East Buzzard pond is 0.07 million gallons with a 10 year, 24 hour equivalent volume of <br />0.26 million gallons. The discharge from this site is the Yampa River. <br />We request the discharge location become active upon completion of sediment pond construction. Trapper <br />will submit a technical revision to CMLRD, with appropriate hydrologic information, for their approval. <br />We will notify you when construction commences, of construction completion, and of any proposed dis- <br />charge into this drainage, <br />Please contact me if you require additional information or have any questions. Thanks for your assistance in <br />our current permit re-authorization. <br />Sincerely, <br />William Agnew <br />Sr. Environmental Engineer <br />WA/jb <br />[CDOHWPR22j <br />Mined <br />'~ecfamation plvson <br />Enclosure <br />c J.M. Mattern <br />R.W. Fish (w/o map) <br />B.D. Nicholson (w/o map) <br />W.S. Harding (w/o map) <br />D. erry MLRD <br />R.L anyo <br />file <br />P.0. Box 187 <br />Craig, Colorado 81626 <br />(303) 824-4401 <br />