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t� <br /> Date November 11, 1997 <br /> ARCO QUARTERLY GROUNDWATER MONITORING REPORT <br /> Facility NoOQ 548 Address 1612 Hammer Lane, Stockton, California <br /> ARCO Environmental Engineer Paul Supple <br /> Consulting Co/Contact Person EMCON/Jay R Johnson <br /> Consultant Project No 20805-140 407 <br /> Primary Agency/Regulatory ID No Mary Meays, San Joaquin County Public Health Services <br /> WORK PERFORMED THIS QUARTER (Third 1997) <br /> 1 Performed quarterly groundwater sampling <br /> 2 Compiled and evaluated groundwater monitoring data <br /> • WORK PROPOSED FOR NEXT QUARTER (Fourth 1997) <br /> 1 EMCON will continue to perform quarterly groundwater monitoring for ARCO The next sampling <br /> event is tentatively scheduled for November 1997 <br /> 2 Awaiting authorization from Lincoln Properties (owner of the property located south of the ARCO <br /> Station) to install additional groundwater monitoring wells <br /> Current Phase of Protect Mondonng/Assessment <br /> Frequency of Groundwater Sampling Quarterly <br /> Frequency of Groundwater Monitoring Quarter) <br /> Sampling Date August 12, 1997 <br /> Is Free Product (FP) Present on Site No <br /> FP Recovered this Quarter NA <br /> Cumulative FP Recovered to Date NA <br /> Approximate Depth to Groundwater 32 55 to 34 45 <br /> Direction of Groundwater Flow East <br /> Groundwater Gradient 0 004 <br /> SAC\N\PJM80"8051400 7CS-97\cjb 1 <br />