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WESTERN FUELS-UTAH <br />DESERADO MINE <br />A STUDY PLAN FOR REFUSE PILE REVEGETATION SUCCESS <br />WITH VARYING TOPSOIL/SUBSOIL THICKNESS <br />INTRODUCTION <br />Deserado Mine ie an underground coal mine. Coal is mainly extracted by longwall <br />method. Continuous miners are used to develop mains and gate roads. The run- <br />oP-mine coal is crushed and washed in the on-site preparation plant. Washed <br />coal is shipped to Bonanza power generating station. The refuse remaining <br />after the coal washing process is shipped by haul trucks to refuse storage piles. <br />Currently, there are two active refuse piles, RP-1 and RP-2/3. The refuse pile <br />RP-1 is about full and will be reclaimed beginning in May, 1990, about the same <br />time that a new pile area, RP-4, will be constructed. <br />Deserado Mine's current permit issued by Colorado Mined Land Reclamation <br />Division stipulates that the refuse piles be reclaimed with a Pour Peet cover oP <br />subsoil and topsoil. There is an adequate amount oY subsoil and topsoil to cover <br />RP-1. However, because oP inadequate thickness oP existing subsoil and topsoil, <br />Western Fuels-Utah believes there will not be enough subsoil and topsoil to meet <br />the four-Peet cover requirement Por reclaiming the other refuse piles in the <br />future. <br />The purpose of this study is to investigate whether successful revegetation can <br />be achieved with atopsoil/subsoil cover thickness oP less than four Peet. IP the <br />- ~ .. ~ <br />