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<br />TABLE 6. (page 4) <br /> <br />Boron (B) an indicator of the usefulness of spoils and <br /> refuse rock as a plant growth medium <br /> (Bingham, 1973); concentrations may increase in <br /> waters near surface mines in the western U.S. <br /> (Everett, 1979). <br />Cadmium (Cd) concentrations may increase in waters near <br /> surface mines in the western U. S. (Everett, <br /> 1979); may be a pollutant associated with fly <br /> ash disposal in surface mines in the western <br /> U.S. (Everett, 1979). <br />Copper (Cu) concentrations may increase in waters near <br /> surface mines in the western U.S. <br /> (Everett, 1979); may be a pollutant associated <br /> with fly ash disposal in surface mines in the <br /> western U.S. (Everett, 1979); change in Cu:Mo <br /> ratio could cause molybdenosis in livestock. <br />Iron (Fe) increased concentration reported in mine spoils <br /> water at the Edna Mine (Skogerboe, et a1., <br /> 1979); concentrations may increase in waters <br /> near surface mines in the western U.S. <br /> (Everett, 1979); effluent limitations from <br /> Rule 4.05.2 (7). <br />Lead (Pb) commonly exceeds drinking water, livestock, and <br /> aquatic life water quality standards in the <br /> Yampa River (Melancon, 1980); increased <br /> concentration reported in mine drainage in <br /> Colstrip, Montana (Yan Voast, et a1., 1977). <br />Manganese fMn) increased concentration reported in mine spoils <br /> water at the Edna Mine (Skogerboe, et al., <br /> 1979); concentrations may increase in waters <br /> near surface mines in the western U.S. <br /> .(Everett, 1979); effluent limitations from <br /> Rule 4.05,2 (7). <br />Mercury increased concentration reported in mine spoils <br />water at the Edna Mine (Skogerboe, et al., <br />1979); commonly exceeds water quality standards <br />in the Yampa River (Steele, et al., 1978); may <br />be a pollutant associated with fly ash disposal <br />in surface mines in the western U. S. <br />(Everett, 1979). <br />Molybdenum (Mo) increased concentration reported in mine <br />effluent at the Empire Energy Mine <br />(Empire Energy, 1981); may be a pollutant <br />associated with fly ash disposal at surface <br />mines in the western U. S. (Everett, 1979); <br />change in Cu:Mo--ratio could cause molybdenosis <br />in livestock. <br />