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Longfellow Koehler Project <br /> Page 5 <br /> (7) Design lined flow around ditches. <br /> (8) Design passive bio treatment system. <br /> (9) Investigate favorable location for onsite relocation of mine wastes. <br /> (10) Record historical buildings and artifacts that will be affected by this project. <br /> (11) Obtain permits, if needed, from San Juan County and Corps of Engineers. <br /> 1997 and on <br /> (1) Implement BMP run on controls where practicable. <br /> (2) Install downstream settling ponds to prevent pollution during reclamation. <br /> (3) Stabilize historical buildings that will remain on site. <br /> (4) Relocate mine wastes. <br /> (5) Dewater settling pond and remove sediments. <br /> (6) Construct passive bio treatment system. <br /> (7) Construct flow around ditches. <br /> (8) Reclaim and revegetate waste areas using cap for areas where relocation is not <br /> possible. <br /> (9) Monitor and operate facility according to plan for a period of at least 48 months. <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 will <br /> improve the conditions of the headwaters of Mineral Creek. <br />