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J' _ . <br />III IIIIIIIIIIIIIIII <br />999 <br /> <br />r" c .-. ~_ i V L {--t <br />JUG 1 g 1994 <br />July 6, 1994 <br />Mr. Joseph J. Dudash <br />Environmental Protection Specialist <br />Colorado Division of Minerals and Geology <br />1313 Sherman, Roam 215 <br />Denver, CO 80203 <br />Division,,, ..,,.,,,.~._ _ <br />---.; <br />Subject: Technical Revision No. 35, Development Waste Pile SAE, Response to 2/8/rI4 Adequacy Letter, <br />New Elk Mine, Permit No. C-81-012, Basin Resources <br />Dear Mr. Dudash, <br />Basin Resources and Greystone have reviewed the adequacy questions associated with Technical Revision 35, <br />and would like to take this opportunity to respond. The SAE demonstration was revised to respond to the <br />Division's concerns. Basin is committing to the installation of either a straw bale dike or a silt fence between <br />the slope and Ditch D-10. Questions will he answered in the order in which they were asked. <br />1. The public notice was changed from TR-32 to TR-35. The Affidavit of Publication is coming under <br />separate cover. <br />2. The SAE area covets the reclaimed area between D-2 and D-10. Field measurements of 50' x 95' were <br />measured. Map 13 has been modified to reflect the location of the SAE. Basin stands firm on its <br />acreage estimate of 0.11 acres. <br />3. A medium hydrograph was used in the modified run. <br />4. The CP value was raised to 0.038 to reflect a predominantly grassy vegetative cover of 25% and a total <br />cover of 60%. Basin anticipates that the cover is higher, as it was re-seeded and mulched in the last year, <br />and is located on an east facing slope. <br />5. Please incorporate the small area exemption demonstration into the permit document in Exhibit 19, <br />Section 6. Three copies of the permit document materials are provided for your use. <br />Please call if you have any questions. <br />Sincerely, ~,/ <br />Catherine W. Begej <br />ce Mr. Ralph Lopez <br />Enclosures <br />5990 Greenwood Plaza Blvd. Suite 250 Englewood, CO 80111 <br />(303)850-0930 Fax (303)721-9298 <br />