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Longfellow Koehler Project <br /> Page 6 <br /> Work Plan(cont.) <br /> 1997 and on <br /> (1) Implement BMP run on controls where practicable. <br /> (2) Stabilize historical buildings that will remain on site. <br /> (3) Continue relocation of mine wastes. <br /> (4) Dewater settling pond and remove sediments. <br /> (5) Submit a completed design for a passive bio treatment system to WQCD. <br /> (6) Construct flow around ditches. <br /> (7) Reclaim and revegetate waste areas using cap for areas where relocation is not <br /> possible. <br /> (8) At the completion of the studies and reclamation work, SGC will provide $200,000 <br /> to a fund as directed by WQCD, which funds will be utilized to fund water quality <br /> improvement or remedial projects to address impacts of past mining activities in the <br /> Upper Animas Basin. <br /> (9) Calculate loading reduction due to the waste removal/run on control measures. <br /> Analysis <br /> The headwaters of North Mineral Creek currently have a low pH and are laden with heavy <br /> metals. Removal and consolidation of the mine dumps (including pH stabilization) will isolate this <br /> material from direct contact with rain waters, snow melt and flows from intermittent streams and <br /> neutralize the acid generation process already in progress. These Best Management Practices are <br /> expected to improve the conditions of the headwaters of Mineral Creek. <br /> Should a passive bio treatment system be installed by another party(which installation is not <br /> part of this project) it may provide an effective approach to treatment of long term acid mine <br /> drainage and may reduce the need for and expense of active chemical treatment and minimize sludge <br /> disposal requirements. <br />