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iii iiiiiiiiiiiii iii <br />-~ H - G COAL COMPANY 999 <br />YIN! OPERATIONS BUSINESS OFFICE <br />P. O. B07( 771 5731 STATE HIGHWAY 73 <br />YDEN, COLORADO 81839 MEEKER, COLORADO 81841 <br />(30317783,18 ~ r - L-.~ per. ~ V E 3031824-ILS, <br />October 30, 1991 1L_(`,/'~ <br />help e > »s~ <br />Ms. Margot Anderson Mined Land <br />Reclamation Specialist Reclamation Division <br />Colorado Mined Land Reclamation Division <br />215 Centennial Building <br />1313 Sherman Street <br />Denver, Colorado 80203 <br />Re: Supplemental Information <br />Permit No. C-SO-003 <br />Technical Revision 60 <br />ermit Renewal 02 <br />Dear Margot, <br />As per our telephone conversation, enclosed please find <br />the requested copies of the Technical Revision for pond HG-8 plus <br />permit Map L. <br />Also enclosed, as Table 1, is a Summary of Vegetative <br />Cover Sampling which substantiates the use of the chosen curve <br />numbers for the SEDCAD calculations. <br />In response to your question concerning ~:ediment ponds, <br />it is Colowyo's intention to ultimately convert all minesite ponds <br />to permanent impoundments. Two ponds, HG-8 and the Shop/Office <br />Area Pond, have already been permitted as permanent: impoundments. <br />The remaining two ponds, the Landfill Area Pond and Explosives <br />Storage Area Pond, will be changed to permanent impoundment status <br />upon application for Phase II Bond release. <br />I hope that this information answers your questions, <br />please feel free to call me should any other questions arise. <br />Sincerely, <br />U~ ~~ <br />Juan Garcia <br />Hydrologist/Environmental Engineer <br />JG/gf <br />enclosures <br />cc: J. A. Kiger <br />R. G. Atkinson <br />Central Files <br />