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~r <br />riichard D. Lamm <br />Governor <br />III IIIIIIIIIIIIIIII <br />DEPARTMENT OF NATURAL RESOURCES <br />David H. Getches, Executive Director <br />MINED LAND RECLAMATION DIVISION <br />DAVID C. SHELTON, Director <br />August 19, 1986 <br />Mr. Tomrtpr Raye <br />Raye and Associates <br />976 Welch Court <br />Golden, Colorado 80401 <br />Re: Technical Revision No. 2, Grassy Gap Hydrology Monitoring Reduction, <br />File No. C-81=039 <br />Dear Mr. Raye: <br />The Division has reviewed the hydrology data submitted pursuant to the above <br />referenced revision, and has concluded that a reduction in hydrology <br />monitoring is warranted. Enclosed is a memo from Candy Thompson which <br />outlines the Division's proposed reductions in sampling sites, sample <br />frequency and parameters to be tested. In addition to these changes, the <br />Division would require that an annual report be submitted by December 31 of <br />each year. This report would include the previous year's data and a narrative <br />analysis of that data with respect to predicted impacts of the mining <br />operation. The data should be reduced and graphically represented to show <br />changes over time wherever possible. A map which depicts springs and seeps <br />detected in the annual survey would also be included, with approximate flow <br />rates noted. <br />If this proposed monitoring is acceptable, please respond in writing and the <br />Division will formally approve the revision. If you have any disagreements, <br />comments, or questions, please contact myself or Ms. Thompson. <br />Sincerely, <br />~~ ~~~ <br />Jeffrey Deckler <br />Reclamation Specialist <br />JD/vj r <br />cc: Mark Korb <br />Steamboat Springs, f,0 80477 <br />2972E <br />423 Centennial Building, 1313 Sherman Street Denver, Colorado 80203 Tel. (303) 866-3567 <br />