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,~ <br />,• <br /> <br />November 30, 1993 <br />Mr. Joseph Dudash <br />Colorado Division of Minerals and Geology <br />1313 Sherman Rm. 215 <br />Denver, CO 80203 <br />Subject: Technical Revision 27 and NOV C-93-037, New Elk Mine, <br />Basin Resources, C-81-014 <br />Dear Mr. Dudash, <br />The attached submittal of SEDCAD+ documentation provides sizing for <br />the road ditch between culverts C4 and C27. Ditch D34AA is east of <br />D34A and C2 and Ditch D34AAA is east of C4. The B-series of <br />ditches are named similarly. In addition, I have enclosed sizing <br />for the berm between the ditch and the undisturbed drainages to the <br />south. <br />The culvert nomograph for the culvert below the Non-Coal Waste Area <br />has been identified as Culvert 51, and is sized to be 42". Three <br />copies are attached. <br />The SAE demonstration for topsoil pile 2 has been modified to <br />reflect a mulched and vegetated pile following discussions during <br />field inspections between you and Mr. Lopez. This will avoid the <br />requirements associated with impoundment regulations. <br />Please call if you have any questions. <br />Sincerely, = <br />~~~~ ~~ ~ <br />Catherine W. Begej ~-~~ <br />Project Manager <br />cc Mr. Ralph Lopez <br />Enclosures <br />5990 Greenwood Plaza Blvd. Suite ?50 Englewood, CO 80111 <br />~~n~. ern nn~n .~... ~~n ~. ~-r.. .+,+...• <br />