Laserfiche WebLink
C-SHADRIFS91.6/G WPP.12 <br /> 01/22/92 <br /> Optional Component B consists of the treatments to remove arsenic to acceptable <br /> levels and would follow one of the VOC removal alternatives (Alternatives 1 <br /> through 4). The major components include: <br /> Precipitate feed system; <br /> A 600-gallon (gal) flash mixing tank; <br /> An 18,000-gal flocculating tank; <br /> A clarifier (Lamella-type separator); <br /> Filter press to dewater sludge; <br /> A 5,000-gal effluent transfer tank; <br /> Associated piping, pumps, valves, and tanks; and <br /> Piping treated water to disposal network. <br /> PREFERRED ALTERNATIVE <br /> The preferred alternative for groundwater cleanup at SHARPE is Alternative 1, <br /> air stripping (Map 3). Alternative 1 has been determined to be protective of <br /> human health and the environment for exposure to groundwater, cost effective, <br /> and can be accomplished in a timely manner. Disposal would be through the <br /> three network components described in the section on Summary of Alternatives. <br /> In addition to the expansion of the existing North and South Balloon Area <br /> treatment systems and installation of the Central Area system, implementation of <br /> this alternative would prevent further migration of contaminated groundwater <br /> and address the EPA and state agencies' predominant concern with the <br /> contaminated groundwater. That major concern is for contaminated <br /> groundwater migrating to potable wells. Once the exposure pathway is dealt <br /> with (i.e., groundwater through remediation), efforts to address the source of the <br /> groundwater contamination (contaminated soils) can be initiated. <br /> 15 <br />