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Reclamation of the Rock Tunnel consisted of placing a four foot diameter Vylon (double walled plastic) pipe into each mine entry. A steel grate with a locking access door acts as a bamer at the pipe outlet. A drainage ditch was constructed to convey the mine flow from the pipe to the 016 treatment ponds located below the Rock Tunnel Waste Pile. MidCon Realty LLC subsequently was granted approval from the Colorado Department ofPublic Health and the Environment (CDPHE) to convey the flow directly into Dutch Creek. Rock Tunnel Waste Pile The Rock Tunnel Waste Pile, located south of Dutch Creek is an approximately seventeen-acre azea that is constructed of waste rock materials generated during construction of the twin Rock Tunnels. The facility also housed a solid waste disposal area near the upper, central portion. The solid waste had been covered by waste rock by Mid-Continent Resources prior to the Division beginning reclamation work. Although this facility was constructed in a valley bottom adjacent to Dutch Creek, little topsoil was available on-site for cover. Reclamation consisted of grading the pile to facilitate long term geomorphic stability, construction of two run-on diversion ditches, and arun-off conveyance ditch, placement of a dirt cover, and seed, fertilizer and mulch application. Pond Reclamation Pond reclamation was designed to transform the sediment ponds on private and public lands throughout the mine into maintenance free water retention structures, while providing benefits to wildlife and other azea values. All ponds at the site, excepting the 016 pond system which at the time treated the mine water discharge, were subject to this project. Pond reclamation entailed removal of the corrugated metal pipe (CMP) discharge structures, reducing the slope of the embankment cut created by CMP removal, and lining of the excavation with rock rip rap, planting of all areas at the water line elevation with a wetlands seed mixture and willows, and planting areas above the water line with an appropriate upland seed mixture. All of the sediment retention ponds in Coal Basin had been regulated by the Colorado Water Quality Control Division under a National Pollution Discharge Elimination System (NPDES) permit held by Mid-Continent Resources. Prior to project implementation, the Colorado Water Quality Control Division terminated the NPDES permit for all but the 016 ponds. In order to facilitate NPDES permit termination, and thus project initiation, the Division applied for and received a Storm Water permit that covered each of the ponds to be affected by the project. This permit was eventually terminated in 2005. The 016 ponds NPDES permit was terminated at the request ofMid-Continent Resources under a sepazate action at a later date. All NPDES point source and stormwater permits for the Coal Basin Mine have been terminated by the Colorado Water Quality Control Division. Permanent Structures Permanent structures remaining on the private lands include: the metal building near the former Preparation Plant azea, the water tank, the Lamp House, and the power lines to the Lamp House. 4