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s <br /> Date May 17, 2000 <br /> ARCO QUARTERLY GROUNDWATER MONITORING REPORT <br /> Facility No 02168 Address 441 Charter Way, Stockton, California <br /> ARCO Environmental Engineer Kyle Christie <br /> Consulting Co/Contact Person IT Corporation/Mark Capps <br /> Consultant Project No 804599 00010000 <br /> Primary Agency/Regulatory ID No Ron Rowe, San Joaquin county Public Health Services <br /> WORK PERFORMED THIS QUARTER (First 2000) <br /> 1 Prepared and submitted quarterly groundwater monitoring report for fourth quarter 1999 <br /> 2 Performed quarterly groundwater monitoring and sampling for first quarter 2000 Groundwater <br /> samples were collected from monitoring wells MW-1 through MW-7 and submitted for laboratory <br /> analysis <br /> WORK PROPOSED FOR NEXT QUARTER (Second 2000) <br />. 1 The next sampling event is tentatively scheduled for May 2000 Groundwater samples will be collected <br /> and analyzed for total petroleum hydrocarbons as gasoline (TPHG) using U S Environmental <br /> Protection Agency (USEPA) Method 8015, for benzene, toluene, ethylbenzene, and total xylenes <br /> (BTEX) using USEPA Method 8020, and for oxygenates using USEPA Method 8260 <br /> Current Phase of Project Monitoring _ <br /> Frequency of Groundwater Sampling MW-1 throw h MW-7 = Quarterly <br /> Frequency of Groundwater Monitoring Quarter) <br /> Sample Date February 22, 2000 <br /> Is Free Product (FP) Present on Siite No <br /> FP Recovered This Quarter NA <br /> Cumulative FP Recovered to Date NA <br /> Approximate Depth to Groundwater 19 29 to 23 26 ft <br /> Direction of Groundwater Flow Southeast to Northeast <br /> Groundwater Gradient 0 004 ft/ft to 0 001 ft/ft <br /> a <br /> CP\N\CamPk\DatalArcluveWrco12168\Qtrly12168Q100 DOC-98\t 1 IT Corporation <br /> 05/17/00 <br />