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STATE OF COLORADO <br />r DIVISION OF MINERALS AND GEOLOGY ~~ ~~ <br />Department of Natural Resources / <br />1313 Sherman 5t., Room 215 <br />Denver, Colorado 80203 <br />Phone: (303) 866-3567 <br />FAX: (303)832$106 <br />r_. ~ V <br />June 21,.2006 ~ <br /> <br />COLORADO <br />DIVISION O F <br />MIN SRALS <br />GEOLOGY <br />0.E CLA NATION•NININC <br />SAFETY.SCIE NCE <br />Bill Owens <br />Governor <br />D1Ck Whlte__ _ Russell George <br />! Executive Director <br />Cotter CorLoration _~! <br />P.O. BOX 700 Ronald W. Cottony <br />Division Director <br />Nucla, CO 81424 J / Natural Resource Trustee <br />Re: Waste Dump Monitor Well Plans For SM_-18 Mine (M--1978-116), JD-6 Mine (M-7977-31 D), JD-8 Mine <br />(M-1984-OI4) and JD-9 Mine (M I977-306). <br />Dear Mr. White: <br />Cotter Corporation has proposed the installation of monitor wells and piezometers at the above referenced sites to <br />gather hydrological data concerning the potential migration of metals from waste dump rock into the surrounding <br />area. Cotter and staff met on May 2"a, 2006 on site to discuss the initial proposal and possible well locations: <br />Staff has in principal agreed to the plan and locations, but final approval cannot be given until the plan is formally <br />submitted and reviewed. Cotter needs to submit the plans for each site which should include a basic well <br />construction plans as well as site and well location maps. The plans should also set a monitoring schedule and <br />proposed parameters to be tested from the samples. The Division also needs in the plan proposal a projected start <br />date for construction and possible first date for submission of data for review. <br />The approval of the plans, construction and data collection are critical for scheduling Cotter's appeals to the <br />Board of the DMO designation by the Division of the JD Mines and Non-DMO for the SM-18. Staff will review <br />the plans as quickly as possible, but must have time to do so adequately prior to implementation. <br />If you need additional information, please contact me at the Division of Minerals and Geology, Grand Junction <br />Fieid Office, 101 South Third Street, Room 301, Grand Junction, Colorado 81501, telephone no. 970-241-1117. <br />Sincerely, <br />G. Russell Means L •f~ <br />Environmental Protection Specialist <br />Cc: Kate Pickford, DMG EPS, Durango, Hydrology Review <br />Cc: Carl Mount, Senior Environmental Protection Specialist, North Team <br />Cc: Cheryl Linden, Attorney General Office, Denver <br />Cc: Travis Stills, Energy Minerals Law Center, Durango <br />Office of Office of Colorado <br />Mined Land Reclamation Active and Inactive Mines GErological Survey <br />