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WELL CONSTRUCTION REPORT AND QUARTERLY MONITORING REPORT <br /> FORMER DIAMOND LUMBER-MANTECA <br /> AUGUST, 1996 <br />' Soil sample analyses from the 20-foot sample in MW-7-P confirmed the presence <br /> of TPH G at 101 mg/kg, with lower concentrations of toluene, ethylbenzene, and <br /> total xylenes Groundwater analyses reported TPH G and BTEX in MW-7-P, but <br />' results were non-detect at the method detection limits in MW-8-P Groundwater <br /> in MW-8-P has not been impacted, and appears to represent an upgradient or <br /> sidegradient zero line <br /> • The groundwater direction of flow and gradient for the BEI wells for the June <br /> sampling event are in a generally northeasterly direction at a gradient of 0 013- <br /> ft/ft The groundwater direction of flow and gradient for the June sampling event, <br /> including the Park wells was also northeasterly at a gradient of 0 0037-ft/ft <br /> Given the shallow well construction of both the BEI and the Park wells, this flow <br /> direction appears to be representative of the uppermost waterbearing zone <br /> • The groundwater direction of flow and gradient for the SRK wells for the June <br /> sampling event was in a northwesterly direction at a gradient of 0 0053-ft/ft The <br /> SRK wells continue to have water elevations that are somewhat different from the <br />' BEI wells, and now the Park wells <br /> r <br /> 6 <br /> r <br />