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~ ~ (_ <br />c~ <br />pollutant }mown at the present time is zinc, but suspended solids may <br />also become a problem when further exploration and development of the <br />mine occur. Tile proposed water treatment plant will remove both heavy <br />metals and suspended solids. <br />plater quality in 1•Jindy Gulch will be improved by the treatment proposed. <br />11ce Bulldog Piine discharge co:itributes o:cly minor amounts of pollutants <br />to the [d.illow Creek Bassin and treatment of the mine discharge will show <br />only a very nriccor improvement of the water in S•Jillow Creek. Treatment <br />is mandatory under the NPDES Permit, however. <br />The construction of the facility will provide short-term employment <br />opportunities for tlce construction workers and added income to the local <br />merchants through business transactions with these people. Tlce estimated <br />cost of the facility is $250,000, w}rich trill be added to the local and <br />state economy. <br />Potential Adverse Effects: <br />Pfinor soil and vegetative disturbance will occur as a result of this <br />project. Approrimately 1000-2000 cubic yards of material will he removed <br />to level the site. 1'n is material will be contoured in with the present <br />(• slope and all disturbed areas trill be revegetated. <br />The proposed site trill take advantage of an existing road and storage <br />area, so minimum site preparation will be needed. Tlce road will be <br />upgraded as necessary to serve t}ce plant. No new road construction wi12 <br />be needed. <br />Pfinor soil erosion and water pollution will occur during construction if <br />the area experiences rain slco~.rers. However, the plant site is approxi- <br />mately 100 feet from the live crater and all disturbed areas wi1L be <br />revegetated. This impact will be of s}cort duration. The outfall from the <br />discharge Iine into idindy Gulch will be designed so that e:;cess energy <br />from the Crater will be dissipated adequately to prevent scouring. This <br />will be accomplished with a small rock-lined pool or a pile of rocks. <br />No toxic chemicals will be used in the treatment process, so water <br />quality will not be affected by minor spills of reagents. <br />Minor noise and air pollution will occur from equipment operation during <br />the construction phase. Pollution free air and Grind currents in the <br />area trill quickly dilute exhaust fuiaes to insignificance. Tlce noise <br />will be reduced by requiring effective mufflers and spark arresters on <br />the equipment. 1'he plant itself will be electric-powered and will result <br />in very little noise. <br />C~ <br />-- - -. _..-_ . _ 143.- - <br />