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r <br /> • Date October 10, 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 Joa um County Public Health Services <br /> WORK PERFORMED THIS QUARTER(Second- 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 initiated and monitored the performance of the air sparge system <br /> 5 EMCON collected air samples from the soil vapor extraction (SVE) system on a quarterly basis to <br /> monitor system performance <br /> 6 EMCON monitored the dissolved oxygen levels in groundwater to evaluate the performance of the <br /> air sparge system <br /> 7 EMCON evaluated system performance <br /> 8 EMCON obtained a drilling permit from the San Joaquin County Public Health Services and an <br /> encroachment permit from the City of Stockton to abandon well MW-8 <br /> WORK PROPOSED FOR NEXT QUARTER (Third- 1996) <br /> 1 ARCO will continue to perform quarterly groundwater monitoring The next sampling event is <br /> tentatively scheduled for August 1996 <br /> 2 EMCON will continue air sparging while monitoring the effect of sparging of dissolved hydrocarbon <br /> concentrations in groundwater <br /> 3 EMCON will conduct routine operation and maintenance on the remediation system and will continue <br /> to monitor and optimize the performance of the remediation system In addition, EMCON will collect <br /> air samples from the remediation system for laboratory analysis on a quarterly basis <br /> 4 EMCON will abandon monitoring well MW-8 <br /> SA(N Vi(NO80W8051140 6$S-96\cjb 1 <br />