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Stormwater Permit Annual Report, Coal Basin Reclamation Construction Projects 2001 Permittee: Colorado Division of Minerals and Geology Facility Name: Coal Basin Mine Reclamation Construction Mailing Address: 1313 Sherman Street Room 215, Denver Co. 80203 Permit Cert. No.: COR-040204 A. The stormwater permit was issued on November 6, 1998 to the Colorado Division of Minerals and Geology. The pernut was renewed on September 21, 2001. The pernrit was issued for the purpose of completing reclamation operations at a portion of the now inactive Coal Basin Mine. The operating permit for the Coal Basin Mine was revoked by the Colorado Mined Land Reclamation Boazd in 1992. Minerals and Geology is accomplishing reclamation of the site with proceeds received via the bankruptcy plan filed by the former permittee. Minerals and Geology is required by statute to accomplish reclamation of this site. The majority of reclamation construction within the Stormwater permit area was accomplished in 1999. Minor reclamation maintenance work was accomplished within the permit azea in 2001. The primary activities within the stormwater permit area during 2001 were weed control, minor earthwork, grading and revegetation on approximately 1.5 acres of previously disturbed azea, monitoring of past reclamation construction and reclamation maintenance. The Best Management Practices implemented during the 1999 construction season appeared to have been successful in containing sediment generated from the reclaimed azea. Reclamation completed, Best Management Practices installed at each construction azea, maintenance accomplished and vegetative cover established is summarized below. Old Refuse Pile Project Area Huntsman Project The Huntsman Project Area was inspected following snow melt. Silt fence and dozer hummocks were the primary Best Management Practices employed in this azea. The dozer hummocks were very effective in disrupting runoff patterns, and at containing sediment generated from the Project Area. Due to the effectiveness of the vegetative cover at controlling erosion, the silt fence was removed from this area. The vegetative cover at the Huntsman Project Area was visually estimated to exceed 80%. This degree of vegetative cover, which exceeds the overall pre-reclamation vegetative cover by an estimated 55%, is effectively minimizing erosion at this location.