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• Date December 1,2000 <br /> Quarter 3Q2000 <br /> t� <br /> r � <br /> ARCO QUARTERLY GROUNDWATER MONITORING REPORT <br /> Facility No 2093 Address 3425 Tracy Boulevard,Tracy, California <br /> ARCO Environmental Engineer Paul Supple <br /> Consulting Co/Contact Person SECOR International Incorporated/Rusty Benkosky 17-1 <br /> Consultant Project No 077 41928 803 c!:) <br /> Primary Agency/Regulatory ID No San Joaquin County Environmental Health <br /> Assembly Bill 681 Status Property Owned by Atlantic Richfield Company <br /> WORK PERFORMED THIS QUARTER (Third Quarter—2000) <br /> 1 Performed quarterly groundwater monitoring event <br /> 2 Submitted quarterly groundwater monitoring report <br /> 3 Performed operation and maintenance on SVE/AS systems <br /> WORK PROPOSED FOR NEXT QUARTER (Fourth Quarter--2000): <br /> 1 Prepare and submit quarterly groundwater monitoring report <br /> 2 Perform quarterly groundwater monitoring event <br /> 3 Perform operation and maintenance on SVE/AS systems <br /> 4 Continue to pulse SVE/AS system <br /> QUARTERLY RESULTS SUMMARY <br /> Current Phase of Project Monrtonng/Remediation <br /> Frequency of Groundwater Sampling Wells ATR-2,ATR-4,ATR-5,ATR-7, ATR-8,and ATR-12= <br /> Quarterly Wells ATR-1,ATR-3,ATR-6,ATR-9,ATR-10,and <br /> ATR-11 = I`and 3`a quarters <br /> Frequency of Groundwater Monitoring Quarterly <br /> Is Free Product(FP)Present On-Site No <br /> FP Recovered this Quarter None <br /> Cumulative FP Recovered to Date <1 gallon <br /> Current Remediation Techniques SUES/AS <br /> TPHg removed by SVES this quarter 100 9 lbs <br /> Cumulative TPHg removed 36215 lbs <br /> Approximate Depth to Groundwater 100 to 13 5 <br /> Groundwater Gradient Variable C& 0 004 to 0 005 ft/ft <br />