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1 III IIIIIIIII IIII III <br />Environmental Planners, Scientists, and Engineers <br />December 27, 1994 <br /> <br />DEC 2 d 1994 <br />Mr. David Berry <br />Colorado Division of Minerals and Geology Division u~ ~~undiais a uccioyy <br />1313 Sherman, Room 215 <br />Denver, CO 80203 <br />Subject: Adequacy Response to Technical Revision No. 7, Pond Specifications, Stipulation 33, <br />Canadian Strip Mine, SLURCO Corporation, C-81-026 <br />Dear Mr. Berry, <br />The Colorado Division of Minerals and Geology Taxed adequacy questions to Technical Revision No. 7 <br />to Greystone on December 9, 1994. On December 12, 1994, Greystone and the Colorado Division of <br />Minerals and Geology agreed that the response to the adequacy issues would follow approval of the <br />revision in the Torm of a stipulation response, to expedite the approval process. The signed Decision <br />Document is attached, acknowledging the stipulation. <br />There are three questions associated with the adequacy letter which predominately concern certification <br />issues. Responses to these questions are listed in the order in which they are asked. <br />SLURCO and Greystone acknowledge that failure to meet erosion protection pertormance standards <br />associated with impoundment structures may resurt in enforcement action in the future. <br />2. The description of the Pond No. 1 analysis has been modified to include Figures O-1, O-2, and O-3, <br />and the total submittal is certified. <br />3. Figure O-4 has been modified to include a certification. Information on the Pond 002 plan view and <br />embankment cross-sections were previously provided by Wyoming Fuel in Figure 3, entitled <br />'Reclamation Project, As-Built Topography,' dated 11/10/87. Three copies of this previously certified <br />map are provided for your files. <br />Please do not hesitate to call if you should have any questions. <br />Sincerely, <br />Jerry H. Koblitz <br />Principal <br />cc. Mr. Lawrence Corte <br />Enclosures <br />5990 Greenwood Plaza Blvd. Suite 250 Englewood, CO 80111 <br />(303) 850-0930 Fax (303) 721-9298 <br />