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TW6NTYMI6B <br />COAT. COMPANY <br />A Cyprus Amax Company <br />iiiiin iuiii <br />Twentymile Coal Company <br />29515 Routt County Road #27 <br />Oak Creek, Coloredo 80467 <br />970-879-3800 <br />October 16, 1998 <br />]anet Binns <br />Environmental Protection Specialist <br />Division of Minerals and Geology <br />1313 Sherman Street, Room 215 <br />Denver, Colorado 80203 <br />CEIVED <br />~OV 16 19S8 <br />,:~nerals & Geology <br />RE: Installation of Interpond line at Fish Creek Borehole <br />Permit No. C-82-056 <br />Dear Ms. Binns: <br />As we discussed, Twentymile will install an interpond line behveen the center and western cells <br />of the Fish Creek Borehole dewatering system. The line will provide TCC with the ability to <br />utilize all three of the cells as opposed to just two of the three during the treatment of the water <br />discharged from the mine. The cell will provide additional detention time and enhance the ability <br />ofthe polymers to act upon the iron and precipitate it from the discharge stream. <br />The interpond line will be a nominal 12" plastic line buried in the berm between the hvo cells. I <br />anticipate having the line installed on October 19, 1998. Both the materials and labor have been <br />secured to install the line per this schedule, bamng some unforeseen circumstance. <br />Let me know if there is an~4hing else you need. <br />Sincerely, <br />Richard Mills <br />Environmental Manager <br />