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507A t4N <br /> Environmental Technology Inc — -_ <br /> rThe areal extent of petroleum related contaminant plume in soil has been <br /> delineated on-site The areal extent of groundwater plume appeared to <br /> be contained in and around the source area (i e , former pump island) <br /> (Figures 5 and 6) <br /> • MW-8 has further delineated the extents of the plume to the northwest <br /> The plume does not appear to have migrated off-site in that direction. <br /> Based on these and past observations and full delineation of the areal extent of <br /> contaminant plume. SOTA recommends further quarterly groundwater <br /> monitoring to evaluate the seasonal change in the groundwater contamination <br /> plume at U-Haul Center. Further, following approval from San Joaquin County <br /> Environmental Health Division, SOTA will develop an appropriate site remedial <br />' action plan (RAP) to remove dissolved volatile hydrocarbon compounds from <br /> the groundwater at U-Haul center The RAP will recover dissolved hydrocarbon <br /> from the groundwater and contain the contaminant plume "on-site" <br /> 1 <br /> 1 <br /> 10 <br />