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. Date June 17, 1996 <br /> ARCO QUARTERLY STATUS REPORT <br /> Facility No 2130 Address 7906 EI Dorado Street, Stockton, California <br /> ARCO Environmental Engineer Kyle Christie <br /> Consulting Co/Contact Person —EMCON/Jay R Johnson <br /> Consultant Project No 20805-114 006 <br /> Primary Agency/Regulatory ID No Mike Infurna San Joaquin County Public Health Services <br /> WORKED PERFORMED THIS QUARTER (First- 1996) <br /> 1 EMCON performed quarterly groundwater sampling <br /> 2 EMCON compiled and evaluated groundwater monitoring data <br /> 3 EMCON conducted routine operation and maintenance of the remediation system <br /> 4 EMCON collected air samples from the soil vapor extraction (SVE) system on a monthly basis to <br /> monitor system performance <br /> 5 EMCON evaluated system performance <br /> • 6 EMCON completed and submitted an addendum to the problem assessment report <br /> WORKED PROPOSED FOR NEXT QUARTER (Second- 1996) <br /> 1 ARCO will continue to perform quarterly groundwater monitoring The next sampling event is <br /> tentatively scheduled for May 1996 <br /> 2 EMCON will attempt to improve benzene destruction efficiency <br /> 3 EMCON will conduct routine operation and maintenance on the remediation system <br /> 4 EMCON will monitor and optimize the performance of the remediation system <br /> 5 EMCON will collect air samples from the remediation system for laboratory analysis on a quarterly <br /> basis <br /> 6 EMCON will obtain a permit from the San Joaquin County Public Health Services to abandon well <br /> MW-8 EMCON will contract a licensed well driller to drill out monitoring well MW-8 using <br /> 10-inch-diameter augers The well will be drilled out to an approximate depth of 75 feet below ground <br /> surface, and the well casing, filter pack, and surface seal will be removed The former well location <br /> will be grouted to ground surface using neat cement <br /> SAON\PJM805\08051140 6AS-95\gb 1 <br />