1992-01-13_REVISION - C1981035 (2)

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STATE OF COLORADO MINED LAND RECLAMATION DIVISION of co�o Department of Natural Resources H ' O 1313 Sherman St., Room 215 Denver,CO 80203 303 8 66-35 67 *1876 FAX- 303 832-8106 - Roy Romer, Governor Fred R Banta, Division Director DATE: January 13, 1992 TO: Harry Ranney �) FROM: Jim Pendleton RE: National Ki Coal Co any' s TR-01 - Coal Waste Bank Redesign - Supp emen ubmittal #2 (Permit No: C-81-035) I have reviewed the second supplemental submittal made by NKC, Inc. on November 18, 1991 . This submittal presents an amended pile design for the waste bank proposed to be built at the NKC Mine. Mr. Don R. May, P.E. , consultant to the applicant, submitted this amendement in response to our adequacy comments . Mr. May has amended the design to eliminate the culvert proposed in the first supplemental submittal . The waste pile configuration has been amended to accommodate the diverted runoff in a ditch located along the eastern periphery of the pile, instead. As a result the refuse will no longer serve as an impounding structure. This proposed relocation of the drainage ditch satisfies my earlier adequacy concern. In my opinion, the geotechnical aspects of the National King Coal waste pile are now acceptable. I recommend approval of the plan, as amended. cc: Dave Berry JP/Jp