2010-12-15_GENERAL DOCUMENTS - M1990049

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Colorado Division of Reclamation, roject Summary Mining & Safety KOKOMO MINE WASTE PROJECT Gilpin Count Colorado — 2010 p y, Project Location and Background The Druid Mine is within the Central City/Clear Creek Superfund Site located approximately 30 miles west of Denver,Colorado. The Druid Mine consisted of three (3) previously permitted mine sites, each of which has had the operating permit revoked and the reclamation bonds forfeited by the Colorado Mined Land • Reclamation Board in 1994. Each site was subsequently reclaimed using the forfeited funds. In 1983, the U.S. Environmental Protection Agency (EPA) listed the Druid Mine on the National Priorities List (NPL). An approximately 35-acre parcel of the ` Church Placer claim was chosen by the EPA and Colorado Department of Public Health and Environment(CDPHE)as the on- site repository to be constructed within the Central City/Clear Creek , •=- Superfund Area. This property was acquired by the State of ,`" _ Colorado on October 30, 2008. The repository provides a location for the consolidation of waste rock and tailings piles, water Druid Mine/Kokomo waste rock material treatment solids, and metals contaminated sediment under Operable Unit 3 (OU 3 ROD)and Operable Unit 4(OU 4 ROD). On May 1, 2009, the DRMS and CDPHE entered into an Interagency Agreement to reclaim the Kokomo portion of the Druid *441441110 ,. Mine/Church Placer. The DRMS assisted in reclamation of the site by funding the relocation of the metals-contaminated waste rock material from the Kokomo Area to the CDPHE Mine Waste , Consolidation Area. : ..-- Construction Summary Construction began on July 13, 2009 with equipment and materials : being mobilized to the project site and silt fence installed around the disturbed area. Approximately 4,000 cubic yards of Kokomo waste rock was excavated to the underlying native soils and placed in the CDPHE on-site repository located 500 feet to the west. The = remaining sub-soil material beneath the Kokomo dump footprint was graded so the surface blended in with the surrounding area. In Waste rock removal from the Kokomo site to be hauled to the the Spring of 2010 the remaining soils were amended with 10 tons CDPHE Mine Waste Consolidation Area. of limestone and 25 cubic yards of organic material and were ripped into the soil. Mulch was then applied to the ground surface at a rate Land Owner:State of Colorado of 2 tons per acre and the area was scarified to create large gouges to minimize surface erosion and improve growth medium potential. Cooperative Effort Between CDPHE and DRMS The 1-acre area was then broadcast seeded with the Ponderosa General Contractor: McCollum's Excavating Pine/Spruce/Fir seed mixture in the Spring of 2010. PO Box 790 Nederland,CO 80466 In total, CDPHE removed waste rock from 14 different locations Total Project cost: $33,282 00 and placed approximately 40,000 cubic yards in the Mine Waste (only Kokomo) Consolidation Area.