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Mid-Continent Resources, Inc. <br /> PRODUCERS OF THE FAMOUS COAL BASIN COKING COAT, <br /> MID-CONTINENT RESOURCES,INC. 201 Centennial Street <br /> 625 PLAINFIELD ROAD-SUITE 220 Suite 406 Telephone: <br /> WILLOWBROOK,ILLINOIS 60521 Glenwood Springs,Colorado 81601 (303)9454958 <br /> July 16, 19501 <br /> Mike Long <br /> Director, Coal Program <br /> Mined Land Reclamation Division <br /> 215 Centennial Bldg. <br /> 1313 Sherman St. <br /> Denver, CO 80203-2273 <br /> RE: Alternate Treatment System for Mine Drainage. <br /> Dear Mr. Long: <br /> As you know, Mid-Continent experienced problems with the treatment <br /> system for mine drainage during the winter of 1989 when functioning <br /> of the present system, a series of sediment ponds, was impaired by <br /> extreme winter weather conditions. A second malfunction of the <br /> system occurred when the spillpipe was damaged during pond <br /> cleaning. <br /> Mid-Continent has made modifications and improvements to the pond <br /> system since then, including installation of a pond by-pass for <br /> cleaning and use of a flocculant which has proven quite effective. <br /> Maintenance of the ponds has been increased, including frequent <br /> pond cleaning. The access road is kept open through the winter <br /> months. Extensive data has been collected concerning levels of <br /> flow and sediment concentrations of both inflow and outflow. <br /> The ponds are functioning very well under variable flow conditions, <br /> and sediment loads and water quality of the pond effluent is well <br /> within applicable limits. <br /> However, in recognition of the problems which previously occurred, <br /> Mid-Continent committed to the installation of additional treatment <br /> capabilities. We propose addition of a water treatment plant to <br /> fulfill this commitment. Our intention is to use both the 016 <br /> ponds and the treatment plant for treatment of mine drainage. <br /> Mid-Continent previously received permit permission, under <br /> Technical Revision 12, to install a water treatment plant which <br /> combined mechanical and chemical treatment methods for removal of <br />