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' -2- <br /> Conclusions <br /> The surface and groundwater regime is dictated mainly by the steep terrain, heavy <br /> spring runoff form snowpack, and the incised drainage channels along fault zones. <br /> Flushing of both the surface and groundwater system occurs annually. Some elevated <br /> values for TDS and iron are probably caused by mining. However, no impacts to <br /> downstream users are evident. Improvements in the surface water runoff control <br /> system may alleviate total suspended solids problems in Coal Creek. I would <br /> recommend further review of outfall 016 on Dutch Creek, its associated watershed, <br /> and its sediment control system. <br /> m:\oss\scm\coalbas.mmo <br />