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• • Mr. R. E. Thomason May 12, 1981 Page Two Topsoil should ba removed from storage areas in the area marked as number 3 in the 1981 annual report recently submitted. The salvaged topsoil should be stored in a stockpile designed to protect the soil from contamination or loss. The far northwest portion of area 3 should provide a good location for the stockpile. Soil should a18o be cleaned out of the small sediment control baeta near the southern end of area 3 and saved. In general, soil should be salvaged from all areas subject to disturbance. The present sediment control system done not appear to be totally adequate. Tha large pond on area 3 (see most recent amual report) seems to ba doing its intended fob, but the small settling basin at the southern end of area 3 needs to be cleaned out and rebuilt. Additional sediment poade should be constructed in the two drainages below the mine dump areas. A •edimeat pond is also needed below the heater treater area. ys can discuss the design sad aumbar of ponds needed over the telephone. Saedad areas, such ae the old roads I observed on the May 6, 1981 inspection, should be protected Prom disturbance so ae to speed reclamation and bond release. I suggest large enough ditches sad berme be constructed at the ends of each seeded section of old road to discourage vehicular traffic. Signs marking the seeded erase and even short lengths of fence or cable or rock piles might also be necessary. You may also have to educate other wrkere of the need to stay off the seeded areas and thanaenforce the restrictions. I believe the method for handltag mine drainage water should be improved. I am willing to listen to your reasons for handling the water as you are but wish to discuss some possible improvements. I am also concerned about eituatione ehera the amount of retort aster may exceed the capacity of your steam generation system. An evaporation pond might be necessary. In general, I want to be certain that all reasonable precautions are being made to ninimian erosion and contamination of surface and ground eaters. The recently seeded areas very looking fairly good. I em aura the recent rain will help immenely. I recommend you consider someminor weed control measures to reduce vend competition and thus aid eatabliehment of seeded plant epeciea. Spraying with a low volatile Hater or amine formulation of 2,4-D will control the ruseian thistle sad ewer cypress I observed. Care must be taken to avoid spraying the surrounding native shrubs or any volunteer shrubs on the seeded areas. Peel free to contact me if you have any questions. Stacerely, Steven G. Richardson, Ph.D. Senior Reclamation Specialist SGB/~m