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• entrance to the mine. This will be removed when the road is reclaimed and <br />the channel will be restored. The culvert was placed into the channel <br />without modifying the grade of the streambed. When it is no longer needed, <br />the culvert and fill material will be removed with the channel and banks <br />returned to their former slopes and blended into the upstream and <br />downstream stream segments. Water quality is protected by the sediment <br />ponds operated in accordance with the NPDES Permit (Appendix 3.7-D) and <br />water quantity is not adversely affected as described in the Colorado <br />Division of Water Resources Water Right Adjudication (Appendix 3.7-D). <br />Ae a result, an exemption from the buffer zone has been granted for <br />the water withdrawal point described along Trout Creek, and the office - <br />loadout area on Oak Creek. The revegetation of appropriate riparian <br />habitat will be with appropriate riparian species. The other water <br />withdrawal points will be managed as buffer zones until a specific <br />operation and reclamation plan is developed for them. <br />3.6.6 N7-ZNTBNANCB AND RBCLAMATION OF SUPPORT PACILITI89 <br />All support facilities at Edna Mine that are used incidental to the <br />mining activities will be inspected and maintained periodically to insure <br />that no environmental harm is being done and that the requirements of 4.04 <br />i in the performance standards are met. When all support facilities are <br />removed, the areas compacted by traffic or building foundations will be <br />ripped before the area is graded. In the areas that had topsoil removed, <br />the topsoil will be replaced. The whole area then will be revegetated <br />according to the approved standards at that time. Reclamation of these <br />areas will be done in a manner to assure that the performance standards of <br />4.04 are being met. <br />The silo will be dismantled and any salvageable materials retained. <br />During construction of the silo, approximately 6,000 cubic yards of <br />material were removed for the foundation. The silo contains approximately <br />183 cubic yards of cement in the foundation, 1,640 cubic yards in the silo <br />and cap, and 1,350 cubic yards in the bottom feeder chute. The concrete in <br />the silo will be broken and used to fill the depression caused by <br />excavation. The breaking of the concrete will cause it to swell about 30 <br />Mid-term '94 3.6-10 September 15, 1994 <br />