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v el irr <br /> Y <br /> . Date September 2, 1997 <br /> ARCO QUARTERLY STATUS REPORT <br /> Facility No 02168 Address 441 Charter Way, Stockton, California <br /> ARCO Environmental Engineer Kyle Christie <br /> Consulting Co/Contact Person EMCON/Jay R Johnson <br /> Consultant Project No 20805-146 010 <br /> Primary Agency/Regulatory ID No Ron Rowe, San Joaquin Coup Public Health Services <br /> WORK PERFORMED THIS QUARTER (Second 1997) <br /> 1 EMCON performed quarterly groundwater sampling <br /> 2 EMCON compiled and evaluated groundwater monitoring data <br /> 3 EMCON conducted routine operation and maintenance (O&M) of the soil vapor extraction (SVE) <br /> remediation system <br /> 4 EMCON collected air samples from the SVE system on a quarterly basis to evaluate system <br />. performance <br /> 5 EMCON evaluated and optimized the remediation system performance <br /> WORK PROPOSED FOR NEXT QUARTER (Third 1997) <br /> 1 EMCON will continue to perform quarterly groundwater monitoring for ARCO The next sampling <br /> event is tentatively scheduled for August 1997 Groundwater samples will be collected and analyzed <br /> for total petroleum hydrocarbons as gasoline (TPHG), benzene, toluene, ethylbenzene, and total <br /> xylenes, and methyl tert-butyl ether <br /> 2 EMCON will continue O&M, and optimization when necessary, of the SVE remediation system <br /> 3 EMCON will collect air samples from the remediation system for laboratory analysis on a quarterly <br /> basis <br /> Current Phase of Project Remediation <br /> Frequency of Groundwater Sampling Quarterly <br /> Frequency of Groundwater Monitoring Quarterly ^� <br /> Sample Date May 19, 1997 _ <br /> Is Free Product (FP) Present On Site No <br />. FP Recovered this Quarter NA <br /> SA(-'\N\,PJM805\08051461 0C'S-96'\cJ'b 2 <br />