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Vegetation cover of no[ less than 90 percent of the reference area with 90 percent s[atisical <br />confidence. <br />Production will be not less than 90 percent of the reference area with 90 percent statisical <br />confidence. On cropland areas, the wheat grain production shall be at least 90 percent of the <br />historical yield of 21 bu/acre with 90 percent statisical confidence. <br />Species diversity will be: <br />Two perennial warm season grasses, and one perennial forb, all contributing a[ least 30 <br />percent relative cover but not greater than 40 percent relative cover. Woody plant density <br />shall be 1000 stems/acre on the non-cropland areas. With adherence to these standards, the <br />operation will be in compliance with the vegetation requirements. <br />VII. Post-mining Land Use <br />A. The Division is proposing to approve an alternative post-mining land use of range land, <br />wildlife habitat and dryland farming. The land-use meets the criteria of Rule 4.16.3. <br />VIII. Protection of Fish, Wildlife and Related Environmental Values <br />A. The applicant has proposed the use of persistent pesticides on the site during mining <br />and/or reclamation operations. The Division proposes to approve this usage <br />(4.18(4)(g)). <br />B. Fish and wildlife habitat is a planned post-mining land use. The applicant has selected <br />appropriate plant species and distributions to benefit fish and wildlife (4.18(4)(1)). <br />IX. Operations on Alluvial Valley Floors <br />A. The Division has determined that an alluvial valley floor exists within the affected or <br />adjacent area. Therefore, the following findings are in order for the alluvial valley floor <br />known as the Animas River Alluvial Valley Floor located on the Animas River flowing <br />through Durango, Colorado. <br />The Division finds that activities proposed by the applicant will not interrupt, <br />discontinue, or preclude farming on the alluvial valley floors that are irrigated or <br />naturally subirrigated (4.24.3(1)). <br />Upland Terrace Deposits <br />The upland terrace deposits adjacent to and within the permit area of the mine consist of <br />unconsolidated stream laid deposits laid down by the Animas River when it flowed 400 feet <br />higher than its present level. However, there is insufficient surface water to sustain irrigation <br />?i <br />