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• <br />Colorado Yampa Coal Company <br />A Subsidiary of Getty Coal Company <br /> <br />November 22, 1983 <br />iii iiiiiiiiiiiiiiii ~ <br />P.O. Box 774288 <br />Steamboat Springs, CO 80477 <br />(303) 8793800 <br /> <br />Ms. Sandra Emrich f~0~/ '~ J iU83 <br />Reclamation Specialist <br />Colorado Mined Land Reclamation Division fFiINED LAPdD RECL,",'~1AT10~: D:VISIOPI <br />423 Centennial Building Colo. Dep[.of Natural Resources <br />1313 Sherman Street <br />Denver, CO 80203 <br />RE: Colorado Department of Health, NPDES Permit CO-0027154 <br />Dear Sandy: <br />As a result of a modification of our NPDES Permit to comply with new EPA <br />regulations, we are required to submit certain information on sedimentation pond <br />capacities and certification. The information must be in the form of a letter <br />from the CMRLD, and must be submitted by January 7, 1984. We are requesting <br />that you provide the CDOH with a letter verifying: (1) the 10-year, 24-hour <br />precipitation event applicable to our facility and the gauge station used to <br />monitor precipitation; (2) the runoff volume resulting from a 10-year, 24-hour <br />precipitation event for each discharge point; and (3) verification that <br />treatment facilities have been designed; constructed and maintained to contain <br />or treat the 10-year, 24-hour runoff volume at each discharge point. <br />For your convenience, we have summarized the required information in the <br />attached table, from material in approved Permits 79-177 and 76-16. Please <br />review the information provided. When you have determined that the information <br />is correct, please forward a copy of the information with a letter of <br />verification to the CDOH at the address shown below. <br />Mr. Donald H. Simpson <br />Colorado Department of Health <br />Water Quality Control Division <br />4210 East 11th Avenue <br />Denver, CO 80220 <br />