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• Mr. Harlin Knoll May 16,2002 <br /> 1st Quarter 2002 QMR Project No. 2007-0065-01 <br /> Page 4 <br /> The SVES extracted approximately 65 pounds of TPHG during the first quarter 2002, and <br /> a cumulative mass of 3,325.05 pounds of TPHG since startup. The SVES is in <br /> compliance with the SJVUAPCD. The system operated intermittently due to power <br /> outages and electrical problems. The system was restarted on January 21, 2002, after a <br /> power outage on January 20, 2002. The SVE system was shutdown between January 28, <br /> 2002, and February 4, 2002, due to an electrical relay malfunction. The system was re- <br /> started on February 26, 2002, after installing relays for the catalytic oxidizer. <br /> Stratus will continue to operate and maintain the SVES on a pulse mode, with two weeks <br /> of operation and two weeks of shutdown, to optimize the extraction rate during the <br /> second quarter 2002. <br /> CONCLUSIONS <br /> Concentrations of petroleum hydrocarbons and fuel oxygenates in groundwater are <br /> generally consistent with previous sampling events. TPHG was detected in offsite <br /> downgradient well MW-7 for the first time. An increased concentration of MTBE was <br /> also detected in MW-7. Groundwater flow direction outside of the radius of the SVES <br /> • was toward the south-southeast at an average gradient of 0.005 ft/ft. Groundwater levels <br /> increased over a foot since the previous monitoring event. The SVES extracted <br /> approximately 65 pounds of TPHG during the first quarter 2002. Stratus will monitor <br /> petroleum hydrocarbon concentrations in well MW-7 during the next quarter monitoring <br /> event to verify concentrations detected during the first quarter event. <br /> STATEMENT OF LIMITATIONS <br /> The services described in this report were performed consistent with generally accepted <br /> professional consulting principals and practices. No other warranty, expressed or <br /> implied, is made. These services were performed consistent with our agreement with our <br /> client. This report is solely for the use of our client unless otherwise noted. Any reliance <br /> on this report by a third party is at such party's sole risk. <br /> PAUSA Gasoline100651Qtrly120021USA_65_3 Q02.doc SrRArUS <br />