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III IIIIIIIIIIIIIIII <br /> 999 <br /> 5TA'E OF COLORADO <br /> DIVISION MINERALS AND GEOLOGY <br /> DeDepartmento of Natural Resources <br /> 1313 Sherman St., Room 215 <br /> Denver,Colorado 80203 <br /> Phonhon e:13031 866-3567 <br /> FAX:(303)832-8106 <br /> DEPARTMENT OF <br /> NATURAI <br /> RESOURCE` <br /> Roy Romer <br /> Governor <br /> April 30, 1997 lame,S.Lochhead <br /> E.eculive Director <br /> Mr. Michael J. Hart Michael B.LongDivision Director <br /> Hart Environment <br /> P.O. Box 1303 <br /> Boulder, CO 80306 <br /> RE: DEEPE FARM PIT - Amendment 002 Adequacy Review <br /> Permit No. M-81-302 - AM 002 <br /> Dear Mr. Hart: <br /> The Division has reviewed the above-referenced amendment and has the following questions: <br /> 1) By filling an additional 33.9 acres,which were originally proposed as water surface, additional <br /> topsoil will be needed. Calculatingan average depth of 7 inches of topsoil times 33.9 acres,the <br /> Division estimates that an additional 31, 917 cubic yards of topsoil will be required. <br /> Please describe the total area of disturbance which has not yet been topsoiled,including the 33.9 <br /> acres being added as land surface. Also, please document the amount of topsoil you have <br /> available and demonstrate that there is adequate topsoil available to cover the disturbed area <br /> with 6 to 8 inches of topsoil. <br /> 2. The Division's reclamation cost estimate completed on August 19, 1996 did not include the <br /> excavation of any bedrock shale. <br /> Since the time of the reclamation cost estimate, the operator has completed the removal of <br /> facilities and done additional finish grading work. <br /> Please provide the Division with an estimate of the remaining cubic yards of material which <br /> must be moved to obtain the proposed final contours and the average push distance required to <br /> move the material. <br /> Also, please provide the Division with the yardage of topsoil which must still be distributed, <br /> where it must be placed and the locations of this material,as well as the total remaining acreage <br /> which must be seeded. <br />