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Mid-Continent Resources, Inc. <br /> PRODUCERS OF THE FAMOUS COAL BASIN COKING COAL <br /> Ate <br /> ennial Street <br /> 406 Telephone: <br /> MID-CONTINENT RESOURCES,INC. �01 C 625 PLAINFIELD ROAD-SUITE 220P <br /> WILLOWBROOK,ILLINOIS 60521 Glenwood Springs, Colorado 81601 (303)945-4958 <br /> RECEIVED <br /> J U L 121989 <br /> July 10,1989 <br /> MINED LAND <br /> RECLAMATION DIVISION <br /> James C. Stevens <br /> Senior Reclamation Specialist <br /> Mined Land Reclamation Division <br /> 215 Centennial Bldg. <br /> 1313 Sherman St. <br /> Denver, CO 80203-2273 <br /> Dear Mr. Stevens: <br /> RE: Request for Minor Revision 20, Use of Nalco 7883 and Metering <br /> System for Application <br /> Mid-Continent proposes to use Nalco 7883 in our sediment ponds to <br /> help us meet effluent limitation requirements. <br /> Our intention is to introduce this product to the inflow using a <br /> pulser and metering pump to adjust the dosage of the chemical in <br /> response to flow variations. <br /> As a result of the recent upset due to damages to the dewatering <br /> device of the upper pond at the tunnel pond series above Outfall <br /> 016, Nalco 7883 has been placed in the lower pond using our water <br /> truck. However, this is a method adopted in response to the <br /> present upset situation, and our intention is to use the <br /> pulser and metering pump for the long-term application of this <br /> chemical. <br /> We have previously submitted to you the Materials Safety Data Sheet <br /> for Nalco 7883 , information describing the metering device we <br /> intend to use for long-term application, and an MR request form. <br /> Yours truly, <br /> Diane Delaney <br /> Mid-Continent Res. <br />