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FIRST QUARTER 2003 REPORT <br /> KW[KEE FOODS <br /> 2081 Country Club Boulevard <br /> Stockton, California <br /> March 13, 2003 <br /> EXECUTIVE SUMMARY <br /> Groundwater monitoring took place on February 20. The depth to groundwater was measured with <br /> a water level meter and water samples were collected from all seven monitor wells. A battery- <br /> operated purge pump was used to purge the wells of standing water, which was stored in DOT- <br /> approved drums on site. The samples were analyzed for Total Petroleum Hydrocarbons as gasoline, <br /> volatile aromatic hydrocarbons (BTEX), and five gasoline oxygenates. <br /> The depth to groundwater rose by nearly 3 feet between November 2002 and February 2003, and <br /> again averages less than 9 feet below grade, as it did in February 2002. The cone of depression <br /> created by the remediation system at the former Chevron site at 2103 Country Club Boulevard <br /> extends eastward from that site to the western portion of the Kwikee site, and groundwater <br /> presently flows westward from KF-1 and KF-3 toward the Chevron site. East of those two wells, <br /> the piezometric surface flattens and then begins to slope eastward, so that groundwater is flowing <br /> eastward or southward from KF-2, KF-4, KF-5, KF-6, and KF-7. These wells are beyond the <br /> present reach of the Chevron remediation.system. <br /> Petroleum hydrocarbons were detected in the same three wells as in the past several quarters. <br /> Methyl-tertiary butyl ether (MTBE) was the only analyte detected in KF-2, well below the taste <br /> and od6r threshold at 0.85 parts per billion. MTBE was also detected in KF-3 and KF-5, and <br /> tertiary butanol (TBA) and tertiary amyl methyl ether (TAME) were also detected at low <br /> concentrations. Concentrations of the latter two oxygenates have remained unchanged since <br /> Februrary 2002, but MTBE has declined in KF-5 and risen in KF-3. Total petroleum <br /> hydrocarbons and volatile aromatic hydrocarbons have declined in both wells since the second <br /> quarter of 2002, and are now at or below their concentrations in early 2002. Hence, with the sole <br /> exception of MTBE in KF-3, gasoline hydrocarbon concentrations continue the decline that has <br /> been ongoing for several quarters. <br /> 1 <br />