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<br />Richard D. Lamm <br />Governor <br /> <br />DEPARTMENT OF NATURAL RESOURCES <br />Davitl H. Getches, Executive Director <br />~~ <br />MINED LAND RECLAMATION DIVISION <br />DAVID C. SHELTO N, Director <br />DATE: May 8, 1984 <br />T0: Sandy Emrich <br />~~I ~~~~I~~~~~~~~~~~ <br />FROM: Michael Long <br />RE: Energy No. 3 Findings, Existing Environment; Operation Plan; Soils <br />Existing Environment <br />Mollisols, Aridisols, and Entisols are the soil orders found within the <br />general area. The disturbed mining area is predominated by Mollisols and <br />Aridisols. These soils range from deep, well drained loams to shallow, <br />excessively drained sandy loams. Deeper, better drained soils are encountered <br />along the toes of ridges with soil depth decreasing with elevation along the <br />slope. <br />No toxicity problems have been identified within the disturbed area. Major <br />restrictions encountered relate to slope steepness, erosion potential, depth <br />to rock, and permeability. All soils found within the disturbed area fall <br />with~°the SCS land use capability classification of grazing land. Erosion <br />potential appears to be the most limiting factor. Although these soils are <br />all classed as grazing land, they are a good source of plant growth medium <br />within restrictions being physical rather than chemical. Redistributed soils <br />are capable of establishing a diverse, self sustaining vegetative cover. <br />Operation Plan <br />Basically, there is no topsoil salvaging plan to be implemented at the site. <br />Soil has been salvaged and stockpiled for over 99% of the disturbed area. The <br />only new disturbance consists of approximately 5 acres, 18" of soil will be <br />salvaged and directly re-applied when this area is disturbed. <br />As stated above, the operator has already salvaged and stockpiled the majority <br />of the soils required for reclamation. Enough material has been salvaged to <br />al]ow for the redistribution of approximately 2' of material over the entire <br />site. Depths of material range from 2.7' to 1.5' depending on the specific <br />area. The depth of material replaced should be adequate for successful <br />reclamation. <br />Backfilled spoils will be left in a rough condition to aid in the elimination <br />of slippage surfaces during topsoil redistribution. In addition, this will <br />help increase water infiltration and root penetration. Topsoil will then be <br />redistributed using scrappers, along the contour. <br />423 Centennial Building, 1313 Sherman Street Denver, Colorado 80203 Tel. (30~) 866-3567 <br />