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~~ <br />Ricnartl D. Lamm <br />Governor <br />Ill Illlflllllllllll <br />DEPARTMENT OF NATURAL RESOURCES 999 <br />Devitl H. Getches. Executive Director <br />MINED LAND RECLAMATION DIVISION i <br />DAYID C. SHELTO N, Director <br />January 30, 1985 <br />Paige Beville <br />Anaconda Minerals Company <br />555 Seventeenth Street <br />Denver, Colorado 80202 <br />Re: Mt. Gunnison No. 1 Mine <br />VENT FAN TECHNICAL REVISION <br />Dear Paige: <br />The Division has completed its review of your January 22, 1985 responses to <br />our adequacy review on the ventilation fan technical revision. The revision <br />proposes a power line, minor light-use road relocation, and a ventilation fan <br />in Sylvester Gulch. <br />The Division proposes to approve your revision subject to two stipulations. <br />First, since Mt. Gunnison will be dewatering a mine in the F seam, this is an <br />excellent opportunity to characterize what post mining water quality could be <br />like for the mine. It also makes it important that Mt. Gunnison fully <br />characterize what water will be discharged to the North Fork River. Therfore, <br />the following stipulation is imposed: <br />Stipulation #TR-1 <br />West Elk Coal Company shall collect at least <br />representative sample of the discharge water <br />have it properly analyzed far the following <br />pH (field) <br />Conductivity at 25 deg. C (field) <br />Temperature (field) <br />Dissolved Oxygen (field) <br />Total Suspended Solids <br />Total Dissolved Solids <br />Sodium Absorption Ratio <br />Bicarbonate <br />Calcium <br />Chloride <br />Magnesium <br />Sodium <br />Sulfate <br />one composite, <br />from the old portal and <br />parameters: <br />Aluminum <br />Arsenic <br />Cadmium <br />Copper <br />Iron <br />Dissolved <br />Lead <br />Manganese <br />Dissolved <br />Mercury <br />Molybdenum <br />Selenium <br />Zinc <br />Iron <br />Manganese <br />All parameters are total species unless otherwise specified. Results <br />are to be forwarded to MLRD as soon as they are available. <br />423 Centennial Building, 1313 Sherman Street Denver, Colorado 80203 Tel. (303) 866-3567 <br />