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C000 <br /> p) DEPARTMENT OF NATURAL RESOURCES <br /> * * David H.Getches,Executive Director <br /> 7 MINED LAND RECLAMATION DIVISION <br /> T ,s/NE NUMB <br /> ��/ <br /> DAVID C.SHELTON, Director <br /> i <br /> Richard D.Lamm <br /> Governor <br /> MEMORANDUM <br /> TO: Jim Herron <br /> FROM: Roy L. Cox <br /> DATE: July 9, 1984 � <br /> RE: Ground and Surface Water Adequacy Review of the Coal Basin, Sutey <br /> Property Disposal Site, File No. C-017-81 <br /> The following are my preliminary adequacy comments concerning the Sutey <br /> Disposal Site permit revision for the Coal Basin Mines. The comments are <br /> arranged for inclusion into your adequacy letter. <br /> Geology - Rule 2.04. 5 and 2.04.6 <br /> The geologic information in the permit revision application is adequate. <br /> Hydrology Description - Rules 2.04.5 and 2.04.7( 1) and (2) <br /> Additional baseline ground and surface water quality and quantity data <br /> is needed to adequately address seasonal fluctuations. Mid-Continent <br /> Resources, Inc. has furnished baseline data for the period October 1983 to <br /> March 1984. Data from March 1984 to October 1984 is still required. Also, <br /> field measurements of pH, EC, and temperature do not accompany the laboratory <br /> analysis. All surface and ground water field measurements should be submitted <br /> as part of the ground and surface water quality baseline data. <br /> Hydrologic Balance - Rule 2.05.6(3) <br /> 1) The applicant should calculate the projected percent increase in <br /> total dissolved solids and soluble ions in the stream/alluvial <br /> system of Coal Creek due to the construction of the existing and <br /> proposed waste piles. These calculations should be made for impacts <br /> to water quality from each disposal site during peak, mean annual, <br /> and low flows in Coal Creek. The applicant should then assess the <br /> cumulative impacts of the two disposal piles on the quality of <br /> alluvial ground water and surface water in the stream/alluvial <br /> system of Coal Creek. <br /> 423 Centennial Building, 1313 Sherman Street Denver, Colorado 80203 Tel. (303) 866-3567 <br />