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_III IIIIIIIIIIIIIIII STATE OF COLORADO <br />DIVISION OF MINERALS AND GEOLOGY <br />Department o/ Natural Resources ~~rl~~ <br />1313 Sherman SI .Room 215 <br />Denver, Colorado 80203 <br />Phone: 1103) 866-3567 <br />FAX 1703) 8728106 <br />DEPARTMENT OF <br />NATURAL <br />RESOURCES <br />July 8, 1994 Roy Romer <br />Governor <br />Mr. Wayne Tatman Tames S. LOChhead <br />Colina Oro Molino, InC. Esec utive Duecwr <br />9145 Sunshine Canyon Michael B. Long <br />O rvis ion Director <br />Boulder, CO 80302 <br />RE: Gold Hill Mill, Permit No. M-83-141 - Emission Spectrographic <br />Analyses for the Mule vein ore <br />Dear Mr. Tatman: <br />On July 6, 1994, the Division received the faxed Emission <br />Spectrographic analyses of the Mule vein tails samples. This <br />letter is a follow-up to our conversation on July 7, 1994 regarding <br />these results. When comparing the detection limits on many of the <br />metal analyses with the Colorado Department of Health surface and <br />ground water standards (We gave you a copy at our July 1, 1994 <br />Meeting), it is apparent that the detection limits are much higher <br />than the MCL (Maximum Contaminant Level) standards. Therefore, the <br />following elements must be re-analyzed using a technique with <br />detection limits at least as low as the MCL standards: <br />Ag, As, Cd, Cr, Cu, Pb and Zn <br />In addition, you will need to provide the detection limits for the <br />Hg and Se analyses. Are the detection limits at least as low as <br />the MCL standard? <br />If you should have any questions, please contact me. <br />Since ely, <br />~ //~--• <br />William C. York-Fei~/ <br />Environmental Protection Specialist <br />cc: Gwen Fraser, COM, Inc. <br />Mark Steen, Mi Vida Enterprises, Inc. <br />Bob Mason, Town of Gold Hill <br />Carl Mount, DMG <br />c:\wp51\goldh.gc <br />