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Gllm Molybdenum Comp _iy <br /> A DIVISION OF <br /> 1^AA AL W uwr_ <br /> III IIIIIIIIIIIII'll <br /> 999 <br /> May 26, 1987 <br /> I <br /> Mr. David A. Berry f <br /> Reclamation Specialist <br /> Mined Land Reclamation Division [4,AY 9 1987 <br /> 423 Centennial Building <br /> 1313 Sherman Street �V,* LA�iN <br /> Denver, Colorado 80203-2273 <br /> Dear Dave: <br /> In reply to your request for information concerning the reclamation of <br /> our Arkansas Aggregate area, we offer the following answers to the <br /> questions you raised with our Mr. Jeff Todd on February 25, 1987. <br /> 1. With the exception of several natural slopes that are steeper <br /> than 3H:1V, we see no problem with meeting slope require- <br /> ments. It is our plan to distribute the stockpiled topsoil <br /> and revegetate per our plan. <br /> 2. We have discussed this project with the district office of <br /> the Army Corps of Engineers, and no formal approval is neces- <br /> sary for this relocation. <br /> 3. It is planned to leave the existing diversion channel in <br /> place, with the only modification to it being the breach in <br /> its extreme upstream end. The reasons for this are two-fold: <br /> first, the Corps of Engineers requires a proof period of at <br /> least one year prior to disturbing the channel , to prove the <br /> river will not return to it. Secondly, the aggregate re- <br /> serves still exist in the area, and the existence of the di- <br /> version channel will be essential to future development of <br /> these reserves. <br /> 4a. We understand your concern of the reconstruction of perennial <br /> stream channels. The upstream portion of the river will be <br /> returned to an undisturbed portion of the natural riverbed. <br /> We plan to utilize the existing settling ponds with their <br /> properly sized concrete spillway to slow the velocity of the <br /> river. Downstream sedimentation should not be a problem <br /> since all work will be completed prior to returning the river <br /> to its channel . <br /> 4b. There should be no acid producing materials retained or re- <br /> leased during this work, since all such material is being <br /> removed to another site. This work is being coordinated with <br /> the Department of Health. <br /> Climax, Colorado 80429 Phone: C303) 486-2150 TWX: 910-920-4326 <br />