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~ICZ AC21ne. <br />Engineerlnq nd Envlronmantal Services <br />ta75 Pine Grove Road. Suite 109 <br />P.G. Boc 77a0tB <br />Steamboat Springs, Cobrado 80477 <br />303~879~6260 <br />May 6, 1993 <br />Ms. Pat Nelson <br />Colorado Department of Health <br />Water Quality Control Division <br />4300 Cherry Creek Drive South <br />Denver, Colorado 80222.1530 <br />Re: The Rockastle Company - Grusy Creek Mine, CDPS Permit No. COG850023 <br />Dear Ms. Nelson: <br />The Grassy Creek Mine, operated by the Rockcastle Company (Rockcastle), is located <br />approximately 25 miles southwest of Steamboat Sprin&s, Colorado. fining operations at the <br />site ceaud in the late 1980's and final reclamation of mining related disturbance wu completed <br />in fall of 1992. Rockcastle has submitted an application and relevant supporting documentation <br />to the Colorado Division of Minerals and Geology ~DOMG) requesting final bond release for <br />[he Grusy Creek site, Recent converutions with DOMG Staff indiate tha[ Rockustle hu <br />complied with all appliable regulatory provisions for final bond release and that final release <br />is anticipated during May or early June. <br />The current CDPS Permit (Permit No. COG850023) addresses control and monitoring of <br />effluent dischazge for the following discharge points: <br />001 -Pic 4 Sedimentation Pond Chitlet <br />002 -Pit 3 Sedimentation Pond Outlet <br />003 - Pi[ 2 Sedimentation Pond Outlet <br />004 -Pit 1 Sedimentation Pond Outlet <br />005 - Pi[s 5/6 Sedimentation Pond Outlet <br />In conjunction with final site reclamation, the sedimentation ponds for the Pits 1, 2, and 3 area <br />have been removed and associated disturbance ueu reclaimed, so Discharge Points 002 003, and <br />004 no longer exist. In addition, the sedimentation ponds for the Pit 4 and 5/6 ueu ~iave been <br />modified to meet USDA-SCS and Colorado Division of Water Resources requirements u stock <br />tanks or non-jurisdictional storage reservoirs. <br />Contributing drainage areu have been effettively reclaimed a uivalenry of premising utd <br />postmining sediment contributions hu been documented, and D~MG is proceeding with the <br />necessary anions for final bond release. Rockcutle is, therefore, seeking Water Quality Control <br />Division approval to discontinue monitoring and reporting activities under Permit COG850023 <br />and retire the permit. <br />Pleue provide an necessary forms and/or instructions for termination of CDPS permit <br />responsibilities. Thank you for your assistance in [his matter. <br />Sincerely, <br />ACZ Inc. <br />Jer o . I~ieftleton <br />JMN: cc// <br />ca R. Gorham/DOMG <br />jj Chubrilo/Division of Water Resources <br />b. Massey/Pucel, Mauro, Hultin be $paanstra, PC <br />