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S E C 0 R ----- -- _ - - <br /> ,rah r <br /> Date January 23 2002 <br /> Quarter 4002 <br /> ARCO QUARTERLY GROUNDWATER MONITORING REPORT <br /> Facility No 595 Address 6100 N Highway 99, Stockton, CA <br /> Environmental Engineer Paul Supple <br /> Consulting Co/Contact Person SECOR/Rusty Benkosk <br /> Consultant Project No 77BP 50595 02 0336 <br /> Primary Agency/Regulatory ID No San Joa um County Public Health Services <br /> SJCPHS <br /> Assembly Bill 681 Status Property owned by Madeline Scannavino <br /> WORK PERFORMED THIS QUARTER (Fourth Quarter— 2002) <br /> 1 Performed groundwater monitoring and sampling (including onsite water supply well WSW, offsite <br /> water supply well DW-2) <br /> 2 Prepared and submitted September, October, and November monthly system performance <br /> summary <br /> WORK PROPOSED FOR NEXT QUARTER (First Quarter - 2003): <br /> 1 Perform quarterly groundwater monitoring and sampling (including WSW and DW-2) <br /> 2 Prepare and submit quarterly groundwater monitoring report <br /> 3 Prepare and submit monthly system performance summary for December,January, and February <br /> i <br /> QUARTERLY RESULTS SUMMARY <br /> Current Phase of Project Monitoring/Offsite Remediation <br /> Frequency of Groundwater <br /> Sampling MW-1 through MW-10, DMW-1 through DMW-3, WSW, <br /> and DW-2 <br /> Sampled Quarterly <br /> DW-1 influent and effluent sampled monthly <br /> Frequency of Groundwater <br /> Monitoring Quarter) <br /> Is Free Product (FP) Present <br /> Onsite No <br /> FP Recovered this Quarter NA <br /> Cumulative FP Recovered to Date NA <br /> Current Remediation Techniques NA <br /> Approximate Depth to <br /> Groundwater 62 65 to 67 48 ft <br /> Shallow Groundwater <br /> Flow/Gradient Northwest—North @ 0 002 ---0 005 ft/ft <br /> Deep Groundwater Flow/Gradient Northwest @ 0 002 ft/ft <br /> 40MR02 doc <br />