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Richard D. Lamm <br />Governor <br />• iii iiiiiiiiiiiii iii <br />DEPARTMENT OF NATURAL RESOURCES <br />Davitl H. Getches, Executive Director <br />MINED LAND RECLAMATION <br />DAVID C. SHELTON, Director <br />DATE: December 10, 1984 <br />T0: Mike Savag <br />FROM: Jim Her <br />RE: Trinidad Ba in Mining Sediment Control <br />• <br />DIVISIO N <br />Technical Revision <br />I have completed a review of the above referenced T.R. With the submittal of <br />designs for Pit # 1 diversion ditches 22D10 and 22D11, I recommend that this <br />technical revision be approved. <br />For inspection purposes, you should be aware that diversion ditches 22D10 and <br />22D11 are designed with erosive velocities. Trinidad Basin Mining has <br />committed to quarterly monitoring of these ditches. If they find that the <br />ditches have eroded, they have committed to repair of the problem area. <br />/md <br />Doc. No. 5898 <br />423 Centennial Building, 1313 Sherman Street Denver, Colorado 80203 Tel. (303) 866-3567 <br />