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Date- July 22,2005 <br /> Quarter 2°d Quarter,2005 <br /> i <br /> ARCO QUARTERLY GROUNDWATER MONITORING REPORT <br /> Facility No 2186 <br /> Address 3212 North California Street, Stockton, CA <br /> ARCO Environmental Engineer Paul Supple_ <br /> Consulting Co/Contact Person URS/Vernon Elarth <br /> Consultant Project No 38466462 OA152 <br /> Primary Agency/Regulatory ID No San Joaquin County Environmental Health Department <br /> Assembly Bill 681 Status Property owned by Atlantic Richfield Company <br /> WORK PERFORMED THIS QUARTER (Second 2005): <br /> 1 Performed quarterly groundwater monitoring and sampling The following well locations were unable to be <br /> sampled or monitored due to insufficient water VW-lA,VW-2A,and VW-3A <br /> 2 Prepared and submitted quarterly groundwater monitoring report <br /> 3 Performed operation and maintenance of SVE system <br /> WORK PROPOSED FOR NEXT QUARTER (Third 2005): <br /> 1 Perform quarterly groundwater monitoring and sampling <br /> 2 Prepare and submit quarterly groundwater monitoring report <br /> 3 Perform operation and maintenance of SVE system <br /> QUARTERLY RESULTS SUMMARY (Second 2005): <br /> Current Phase of Project Monitoring/Remediation <br /> Frequency of Groundwater Sampling MW-1 through MW-8 and VW-1A through VW-4 sampled <br /> Quarterly <br /> Frequency of Groundwater Quarterly <br /> Monitoring <br /> Is Free Product (FP) Present on Site No <br /> FP Recovered this Quarter NA <br /> Cumulative FP Recovered to Date NA <br /> Bulk Soil Removed this Quarter <br /> Bulk Soil Removed to Date <br /> Current Remediation Techniques SVE Treatment System <br /> GRO Removed This Quarter _ 439 0 pounds (Ibs) <br /> Cumulative GRO Removed to Date 945 7 lbs <br /> Benzene Removed this Quarter 0 00 lbs <br /> Cumulative Benzene Removed to 0 09 lbs <br /> Date <br /> MtBE Removed this Quarter 0 84 lbs <br /> Cumulative MtBE Removed to Date 6 60 lbs <br /> Approximate Depth to Groundwater _ 37 70 to 43 60 feet below ground surface (bgs) _ <br /> Groundwater Flow and Gradient Southeast @ 0 02 feet/foot ft/ft <br /> K%WPrOe WS BP ARC0102t86%Quaner1y12005V QTR 05121 86 GWMR 2Q05 doc Page 1 <br />