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Date October 26, 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./Gowri 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/ 1356 <br /> WORK PERFORMED THIS QUARTER (Third 2005): <br /> 1. Stratus measured groundwater elevations and collected groundwater samples from wells MW-1 <br /> through MW-4, and MW-6 through MW-10 on July 26, 2005. Wells S-1 and S-2 were dry. <br /> 2. Stratus visited the site six times to conduct operation and maintenance of the SVE system. The <br /> system is being operated in pulse mode. <br /> 3. Stratus compiled and evaluated groundwater monitoring data. <br /> WORK PROPOSED FOR NEXT QUARTER (Fourth 2005): <br /> 1. The next sampling event is tentatively scheduled for October 2005. Groundwater samples will be <br /> . collected for laboratory analysis from wells MWA through MW-4, MW-6 through MW-10, S-1, and 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 SW8015B/DHS LUFT 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 (DIPE), tertiary butyl alcohol (TBA), <br /> methanol, and ethanol by EPA Method SW8260B. <br /> 3. Stratus will continue to operate the SVE system in pulse mode. <br /> 4. Stratus will visit the site twice each month to perform routine system operation and maintenance and to <br /> collect compliance samples. <br /> 5. Stratus will prepare and submit a Site Conceptual Model(SCM) report. <br /> Current Phase of Project: Remediation 1 Monitoring <br /> Frequency of Groundwater Sampling: All Wells= Quarterly _ <br /> Frequency of Groundwater Monitoring: Quarterly <br /> Groundwater Sampling Date: -July 26, 2005 <br /> Is Free Product(FP) Present on Site: No <br /> FP Recovered This Quarter: NA <br /> Cumulative FP Recovered to Date: NA <br /> • Approximate Depth to Groundwater: 45.35 to 47.71 feet below toe of well casing <br /> KAUSA Gasolinel00651Qtrly120051USA_65_3Q05.DOC 5r"'FU5 <br />