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7� <br /> Several underground tanks, presumably used to store fuel, are <br /> p known to exist in the site area. As shown on Plate 1, several <br /> potential sources of fuel are located on the up-gradient side <br /> f� of the Manteca Bean facility. in particular, the American Dry <br /> Ice company warehouse is located southwest of the site. At one <br /> time, it is believed that fuel, probably gasoline, was stored <br /> on this property. <br /> V. _RECOMMENDAT^ IONS <br /> At this time: it appears certain that some form of remedial <br /> action is necessary at the Manteca Bean facility. soil and <br /> groundwater need to be treated and/or disposed of by an <br /> appropriate means to meet state and local environmental <br /> protection standards. Steps we believe should be taken at this <br /> time to remediate the site incluc..e: <br /> 1. Excavate and treat contaminated soil in the gasoline . <br /> tank area, or treat soils in-place by aeration and/or <br /> biodegradation techniques. Additional evaluation of <br /> the feasibility of one treatment scheme versus others <br /> will need to be conducted prior to implementation of <br /> a remedial technique. <br /> Z. Pumping from the uppermost aquifer will need to be <br /> _ performed and aeration and/or carbon adsorption <br /> treatment is needed to clean the groundwater. Based <br /> on the chemical tests conducted to date moth aeration <br /> and carbon treatment appear to be feasible treatment <br /> 8 <br />