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, Don. Sutherle III III III III IIII III <br />• , - I~ • Donald D. Ricketts. ~.~. 999 <br />~~ I~ Gilbert F. Rindahl, P.E. <br />Sutherland, Ricketts and Rindahl, Consulting Engineers, Inc. <br />21 BO S. Ivanhoe Street Denver, Colorado 80222 C3037 759-0951 <br />November 9, 1979 <br />Mined Land Reclamation <br />723 Centennial Building <br />1313 Sherman Street <br />Denver, Colorado 80203 <br />Attention: Mr. James L. Schmieding <br />Reclamation Specialist <br />Re: Greeley Pit #77-151 <br />Empire Pit #77-534 <br />Dear Mr. Schmieding: <br />The following comments correspond to similar paragraph numbers in your <br />letter of September 19, 1979, same reference. <br />Greeley Pit #77-151 <br />1. Mining Plan <br />a. The topsoil has been removed and is stockpiled. What is on <br />site will be used for reclamation as the area becomes available. <br />We feel that 4" cover will be sufficient on the area that will <br />be vegetated. <br />b. Slopes of mining will be no steeper than 2:1. Where ponds are <br />formed the slopes will be no steeper than 3:1 from five feet <br />above to 10 feet below expected water line. <br />c. The mining operation does not expect to affect the La Poudre <br />River. <br />~d. Phase one is essen*.ially complete with an expected completion <br />date of December 1979. <br />e. Life of the mine is planned to end in 1993. <br />2. Reclamation Plan <br />a. Slopes will be 3:1 from five feet above to ten feet below the <br />expected water surface. <br />Refer to the mining plan, sheet 3 of 4. Final size of ponds <br />will be: existing gravel pit to the west will be 24 acres, <br />existing gravel pit to the east will be 16 acres, phase II pond <br />will be 37 acres and phase III pond will be 34 acres. <br />