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r <br /> Date: April 5,2002 SECOR <br /> In l ern a ti oa nlI <br /> n coo ipo rel led <br /> CHEVRON GROUNDWATER MONITORING REPORT (I Q2002) <br /> Primary Agency: Rebecca Setliff <br /> San Joaquin County <br /> Environmental Health Division <br /> 304 East Weber Avenue,Third Floor <br /> Stockton, CA 95202 t <br /> C53 <br /> _3 <br /> Facility No.: 9-0557 Address: 139 South Center Street,Stockton,California N <br /> CHEVRON Project Manager: Robert Cochran <br /> Consulting Co./Contact Person: SECOR International,Inc. — WiIIiam Brasher <br /> Consultant Project No.: 77CH.00000.00.0002 <br /> Assembly Bill 681 Status: Property Owner: Chevron Products Company <br /> WORK PERFORMED THIS QUARTER: First Quarter—2002: <br /> 1. Conducted quarterly groundwater monitoring and sampling. <br /> 2. Prepared and submitted groundwater monitoring report. <br /> 3. Installed ozone sparging wells. <br /> 4. Performed DPE pilot test. <br /> 5. Commenced ozone sparging pilot test <br /> WORK PROPOSED FOR NEXT QUARTER: Second Quarter - 2002: <br /> 1. Conduct quarterly groundwater monitoring and sampling. <br /> 2. Prepare and submit groundwater monitoring report. <br /> 3. Continue ozone sparging pilot test. <br /> 4. Install proposed monitoring well MW-13. <br /> QUARTERLY RESULTS SUMMARY: <br /> Current Phase of Project: Monitoring and Sampling/Feasibility Testing <br /> Frequency of Groundwater Sampling: Quarterly <br /> Frequency of Groundwater Monitoring: Quarterly <br /> Is Free Product(FP) Present On-Site: No <br /> Current Remediation Techniques: N/A <br /> Approximate Depth to Groundwater: 22.27 to 23.61 feet <br /> 40 Groundwater Gradient: Soutkeast @ 0.001 to 0.002ft/ft <br /> 3017 Kilgore Road, Suite 100, Rancho Cordova, CA 95670 916.86L 0400 916.861.0430 Fax uwu%secor.com <br />