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�g <br /> y <br /> Golden Grain Company <br /> June 2, 1989 <br /> 202/799--5045.01 <br /> 4.2 FREE PRODUCT REMOVAL <br /> R <br /> The recovery of free product from beneath the <br /> site <br /> iiso <br /> high priority. A short-term, daily hand-bailing Program <br /> currently being implemented to evaluate the continuity of the <br /> plume and to determine the most appropriate method of recovery. <br /> Once a day for at least one week., free product will be <br /> removed from those wells containing it with an acrylic ler. <br /> The product will be placed in the fire-department-apPo <br /> above- <br /> ground storage tank already installed on site. when the tank <br /> becomes full, an EPA-approved oil-recycling company will empty <br /> the tank and take the product to their own facilities. <br /> Lpon completion of the work steps described below, a <br /> remediation plan will be developed to remove the free product (by <br /> an appropriate method) and to abate the soil and groundwater <br /> contamination. <br /> 4.3 SOIL-VAPOR SURVEY <br /> I <br /> A soil-vapor survey in areas of known or suspected hydro- <br /> carbon contamination in permeable soils is a rapid method of <br /> detecting and qualitatively delineating the areal extent of soil <br /> and groundwater contamination. Because of the presence of <br /> permeable soils above a clay layer at about 22 + 0 25 feet, the <br /> soil-vapor survey will be applicable at this site to detect <br /> volatiles emanating from contaminated soil And water above or <br /> within the clay. <br /> The data generated during the survey will be <br /> used to construct a contour map of subsurface hydrocarbon <br /> contamination. <br /> 6 <br /> GROUNWWATEFL <br />- - - -- - <br /> •j EensOi.OGY.INC. <br />