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POWDEr7HORN <br />COAL COMPANY <br />February 21, 1997 <br />III IIIIIIIIIIIIIIII <br />sss <br />P.O. Box 1430 <br />Palisade, Coloratlo 87526 <br />(970)464-7951 <br />Fax (970)464-7161 <br />Mr. Dan Mathews R~C~~~/FD <br />Environmental Protection Specialist <br />Colorado Division of Minerals and Geology <br />2148 Broadway, #C-5 `~ <br />Grand Junction, CO 81503 `bG 1P,~~u,aCO~Gej/may <br />Re: Technical Revision Request, Pond 12, C-81-041 <br />Dear Mr. Mathews: <br />Enclosed please find an application for a technical request, a <br />copy of the proposed public notice and 3 copies of the proposed <br />new and revised pages and Exhibits. The pages and Exhibits are <br />designed to supplement or replace existing pages and Exhibits in <br />the 6 volume Mid-term review response submitted in May 1996. <br />The contents of this proposed revision includes: <br />Page 13-5 Revised to reference the mine water treatment <br /> pond. <br />Page 13-7 Revised to discuss Pond 12 <br />Page 13-7a New page to carry over from Page 13-7 <br />Page 13-10 Revised to discuss Pond 12 <br />Page 13-10a New page to carry over from Page 13-10 <br />Page T13-1-1 Revised to include Ponds 5 and 12 (Table 13-1) <br />The following pages in Appendix 13-2 <br />A13- 1-i&ii Revised to reference Pond 12 <br />Info 8 New page for certification of Pond 12 design <br />RSN- 21 Revised to reference new ditch around Pond 12 <br />RSN- 22 Revised to show new ditch around Pond 12 <br />RSN- 29a New page to include ditch design around Pond 12 <br />RSN- 47 thru 50 New page showing Pond 12 design <br />Page A17-1-i Revised to list new MSDS sheets (Appendix 17-1) <br />MSDS Sheets 17 pages added to Appendix 17-1 to cover chemicals <br />used in the plant and Pond 12 <br />Exhibit 8A Added Pond 12 <br />Exhibit 8B Added Pond 12 <br />