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The April 2004 quarterly groundwater-monitoring event Indicated that the <br /> groundwater elevation Increased approximately 1 42 feet from the previous <br /> event performed In January 2004 During this event, the average depth to <br /> groundwater was 27 73' (-17 97 MSL) The groundwater flow was easterly at <br /> a gradient approximately 4 92 x 10-3 feet per linear foot Petroleum <br />' hydrocarbons were not detected In samples collected from wells MW-1, MW- <br /> 3, and MW-4 The benzene concentration In well MW-2 was non-detect <br /> during this event The remaining toluene, ethylbenzene, xylenes, and TPH-G <br /> concentrations In well MW-2 decreased significantly from previous events <br /> MTBE was the only oxygenate detected and only In well MW-2 The <br /> detectable concentration was just above the reporting limit <br />' The system was taken out of operation after the July 23, 2004 event In order to <br /> operate the system in a"pulsed" mode Pulsed operation can allow soil vapor <br /> concentrations to rebound during the Intervals of non-operation <br /> r <br /> g <br /> August 2004 <br /> Quarterly Groundwater Monitoring Report <br /> I Earthgrams Baking Companies,Inc <br /> (Former Kllpatrlck's Bakeries,Inc) <br /> 1717 South Center Street <br /> Stockton,California <br /> Prepared for SARA LEE BAKERY GROUP Prepared by Philip Services Corp <br /> 11%NV162400132k121382EG\Ptojects\Stockton Center SAlnvesugatrve and Quarterly ReportslQuarterly Report 10_2004 doe January 18,2005 <br />