Laserfiche WebLink
B. _ Fish and wildlife habitat is not a planned post-mining land use. The applicant has not <br />selected plant species and distributions to specifically benefit fish and wildlife <br />[4.18(5)(i)J. Improvements to forage and cover for wildlife are incidental benefits. <br />XN. Protection of Underground Mining <br />There are no surface coal mining activities, other than reclamation of disturbed areas, being <br />conducted within 500 feet of an active or abandoned underground mine. Therefore, the <br />Division proposes no approvals in this regard [4.19(1) and 4.22.4(1)]. <br />XV. Subsidence Control <br />A. Mining at the site has ceased, thus a subsidence control plan is no longer required. The <br />Division makes no proposal to approve such a plan [4.20.1(2) and 4.20.3(1)]. <br />B. The Division does propose to perpetuate apreviously-approved subsidence monitoring <br />program, in accordance with Rule 2.05.6(6)(c), designed to determine the <br />commencement and magnirude of subsidence movements. The remaining element of <br />the plan is a final monitoring of monuments prior to final bond release. This is for <br />verification of the subsidence prediction. <br />XVI. Concurrent Surface and Underground Mining <br />There is no concurrent surface and underground mining at the site. Therefore, the Division <br />makes no approvals with regard to such operations (4.22.2 and 4.22.3). <br />XVII. Operations on Alluvial Valley Floors <br />A. The Division has determined that no alluvial valley floor exists within the affEcted or <br />adjacent azea. However, there aze alluvial valley floors in the region of the permit area. <br />A narrow strip of colluvium has been identified along the Harvey Gap Drainage in the <br />permit area. Other than in the immediate vicinity of the stream, there are no <br />unconsolidated streamlain deposits, and this area is not classified as an alluvial valley <br />floor. Ground waters of the mine site and the Colorado River alluvial valley floor are <br />not hydrogically connected due to interveining (1 to 2 miles) relatively impervious <br />geologic formations. The Harvey Gap Drainage is a conduit for irrigation water from <br />the Grass Valley Reservoir to the river terraces of the Colorado River. Surface water <br />from the mine site has the potential to impact the irrigation water. However, there is <br />no retention of surface water at the mine site so there is no adverse impact to surface <br />water quantitiy. There has been no discharge of surface water from the mine area, and <br />the surFicial materials are non-toxic and non-acid forming. Thus there is no impact to <br />the quality of the irrigation water. <br />Portions of the West Elk Creek Valley approximately 2 '/z miles to the northeast of the <br />permit aze determined to be alluvial valley floor. However, ground waters of these <br />alluvial valley floor and the mine site aze not hydrologically connected due to geologic <br />! 8 03/06/00 <br />