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Mlw-CONTINENT RESOURCES, .NC. <br /> PRODUCERS OF THE FAMOUS COAL BASIN COKING COAL <br /> BOX 158 <br /> CARBONDALE, COLORADO 81623 <br /> MID-CONTINENT RESOURCES,INC TELEPHONE <br /> 625 PLAINFIELD ROAD-SUITE 220 (303)963-2581 <br /> WILLOWBR00 K, ILLINOIS 60521 Twx <br /> February 6, 1986 910 929 6894 <br /> TLX <br /> «11,low �-� tr-;�ti 45-0724 <br /> Ms. Candace Thompson t.e, <br /> Mined Land Reclamation Division <br /> 423 Centennial Bldg. FEB 101986 <br /> 1313 Sherman St. <br /> Denver , Colorado 80203 <br /> Subject: Technical Revision - O 010. DURI. 07 wr� t�! ► ��..;,��.� <br /> Sutey Topsoil Pile Perimeter Ditch <br /> Dear Candace, <br /> We hereby request that the perimeter ditch encircling the Sutey <br /> refuse pile topsoil storage area be decreased in width from <br /> 15 feet to 8 feet to 10 feet. It has become apparent that due <br /> to moisture problems in the pile and the ensuing slumps , the <br /> outside perimeter ditch area has been encroached upon to the <br /> degree that in order to maintain a 15-foot, plus or minus ditch <br /> and berm, it would now be necessary to remove vegetation (trees <br /> and shrubs) and topsoil. Upon looking at the original design <br /> of the ditch/berm zone it is obvious that 15 feet is not necessary <br /> to maintain drainage. The pile dimensions are roughly 150 feet <br /> x 450 feet, or 55 ,000 cu. yds. (1. 55 acres) . <br /> Stipulation No. 12 (Pg 18, Sutey Finding document) : <br /> "The permittee is directed to construct a berm at least three <br /> feet in height around the LOWER end of the topsoil stockpile <br /> prior to construction of the pile . This berm must be placed <br /> a minimum of 15 feet from the toe of the topsoil stockpile. " <br /> It is apparent from the Stip. that the berm was not designed <br /> to maintain a 15-foot margin all around the pile, but to contain <br /> sediment draining down dip from the upper end to the lower end. <br /> We believe that an 8 to 10-foot wide tapered ditch <br /> P1L Dicer( r-oa�csr <br /> will more than suffice to contain any sediment the pile will <br /> produce. Please call if you have any questions. <br /> Sincerely, <br /> DWBowman:ms <br /> Copy: Mr. George Wear <br />