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STATE OFCOLO RADO Ait HnRaD L>MM Gn~ III IIIIII III IIII III <br />999 <br />DEPARTMENT OF NATURAL RESOURCES <br />D. Monte Pascoe. Executive Director <br />MINED LAND RECLAMATION <br />423 Centennial Building, 1313 Sherman Street <br />Denver, Colorado 80203 Tel. (303) 866-3567 <br />David C. Shelton <br />Director <br />December 24, 1981 <br />Mr. Major Oringdulph <br />Colorado Aggregates Co., Inc. <br />P.O. Box 24 <br />Blanca, Colorado 81123 <br />Re: Mesita Hill Volcanic Scoria Pit - File No. 77-227 <br />Dear Mr. Ori.ngdulph: <br />I have received and reviewed your cost calculations for the reclamation of <br />the above captioned operation. I have reviewed these costs in light of the <br />disturbance I saw during my inspection of the site, and the probable activities <br />needed to reclaim it according to your permit and performance standards of <br />the Mined Land Reclamation Act. I also based my conclusions given below on <br />typical costs to the state to reclaim disturbances such as those found on the <br />site. Since I do no have precise figures on such items as depth of topsoil to <br />be replaced and amount of necessary grading, my estimates are somewhat <br />general, but the following analysis should demonstrate that my final figures <br />are probably conservative: <br />A 6" layer of topsoil spread over one acre is comprised of 807 cubic <br />yards. Current costs for the state of Colorado to spread topsoil <br />are at least $1.00%u yd for a project of this size. Topsoil (and /or <br />overburden) must be spread on all the 30 accres of disturbance that <br />you have clarified for this operation in order to do reclamation <br />and at least 6" will need to be replaced. To this base cost must <br />be added revegetation costs and varying amounts of grading, depending <br />on the intensity of the disturbance. For the state of Colorado to <br />to do the reclamation on the site, equipment transport costs must <br />also be considered. <br />My suggestion, using your acreages of disturbance is as follows: <br />16 acres major disturbance at $1,500/acre = 524,000 <br />4 acres moderate disturbance at $1,200/acre = $ 4,800 <br />10 acres minor disturbance at $ 900/acre = $ 9,000 <br />$37,800 <br />I have used the terms "major", "moderate" and "minor" as you did. The definition <br />of these terms as far as our Rules and Regulations are concerned, however, can <br />be found under Rule 2.12 (4)d. (copy enclosed). The disturbance at the <br />