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Date April 22, 2005 <br /> • USA GASOLINE QUARTERLY GROUNDWATER MONITORING REPORT <br /> Facility No 65 Address 2500 West Lodi Avenue, Lodi, California <br /> USA Gasoline Project Supervisor Charles Miller <br /> Consulting Co/Contact Person Stratus Environmental, Inc/Gown S Kowtha, P E <br /> Consultant Project No 2007-0065-01 <br /> Primary Agency/Regulatory ID No Mr Harlin Knoll, San Joaquin County Public Health Services 11356 <br /> WORK PERFORMED THIS QUARTER (First 2005) <br /> 1 Stratus measured groundwater elevations and collected groundwater samples from wells MW-1 <br /> through MW-4, MW-6 through MW-10, and S-2 on January 12, 2005 Well S-1 was dry <br /> 2 Stratus visited the site seven times to construct, install, start-up, and conduct operation and <br /> maintenance of the new SVE system <br /> 3 Stratus replaced the well box for MW-7 <br /> 4 Stratus compiled and evaluated groundwater monitoring data <br /> WORK PROPOSED FOR NEXT QUARTER(Second 2005) <br /> 1 The next sampling event is tentatively scheduled for April 2005 Groundwater samples will be <br /> collected for laboratory analysis from wells MW-1 through MW-4, MW-6 through MW-10, S-1, and <br /> S-2 <br /> 2 Groundwater samples will be analyzed at a state-certified analytical laboratory for total petroleum <br /> hydrocarbons as gasoline (TPHG) by EPA Method SW8015BIDHS I_UFT Manual, and for benzene, <br /> toluene, ethylbenzene, total xylenes (BTEX), methyl tertiary butyl ether (MTBE), tertiary amyl methyl <br /> ether (TAME), ethyl tertiary butyl ether (ETBE), di-isopropyl ether(DIPS), tertiary butyl alcohol (TBA), <br /> methanol, and ethanol by EPA Method SW8260B <br /> 3 Due to low influent petroleum hydrocarbon concentrations and subsequent high utility costs, Stratus <br /> operated the SVE system in pulse mode with 15-days of operation per month <br /> 4 Stratus will visit the site twice each month to perform routine system operation and maintenance and <br /> to collect compliance samples <br /> Current Phase of Project Remediation 1 Monitoring <br /> Frequency of Groundwater Sampling All Wells =Quarterly <br /> Frequency of Groundwater Monitoring Quarter) <br /> Groundwater Sampling Date January 12, 2005 <br /> Is Free Product(FP)Present on Site No <br /> FP Recovered This Quarter NA <br /> Cumulative FP Recovered to Date NA <br /> K IUSA Gasoline100651Qtrly120051USA_65_IQ05 DOC SMAlV5 <br />