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Stormwater Permit Annual Report, Coal Basin Reclamation Construction Projects <br />2002 <br />Pennittee: Colorado Division of Minerals and Geology <br />Facility Name: Coal Basin Mine Reclamation Construction <br />Mailing Address: 1313 Sherman Street Room 215, Denver Co.. 80203 <br />Permit Cert. No.: COR-040204 <br />A. The Stormwater pemut was issued on November 6, 1998 to the Colorado Division of <br />Minerals and Geology. The permit was renewed on September 21, 2001. The permit was issued <br />for the purpose of completing reclamation operations at a portion of the now inactive Coal Basin <br />Mine. The operating permit for the Coal Basin Mine was revoked by the Colorado Mined Land <br />Reclamafion Board in 1992. Minerals and Geology is accomplishing reclamation of the site with <br />proceeds received via the bankruptcy plan filed'by the former permittee. Minerals and Geology <br />is required by statute to accomplish reclamation of this site. <br />The majority of reclamation construction within the Stormwater permit area was accomplished in <br />1999. No reclamation maintenance work was necessary within the permit azea in 2002. <br />Monitoring of past reclamation construction and reclamafion maintenance occurred periodically <br />during the summer and early fall of 2002: <br />The Best Management Practices implemented during the 1999 construction season appeared to <br />have been successful in containing sediment generated from the reclaimed area. Reclamation <br />completed, Best Management Practices installed at each construction azea, maintenance <br />accomplished and vegetative cover established is summarized below. <br />Old Refuse Pile Project Area <br />Huntsman Project <br />The Huntsman Project Area was inspected following snow melt. Silt fence and, dozer hummocks <br />were the primary Best Management Practices employed in this azea. The dozer hummocks were <br />very effective in disrupting runoff patterns, and at containing sediment generated from the <br />Project.Area. Due to the effectiveness of the vegetative cover at controlling erosion, the silt <br />fence was removed from this area. The vegetative cover at the'Huntsman Project Area was <br />visually estimated to exceed 80%. This degree of vegeta5ve cover, which exceeds-the overall <br />pre-reclamation vegetative cover by an estimated 55°l0, is effectively minimizing erosion at this <br />location: <br />2 <br />