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J i <br /> . Date March 14, 2003 <br /> IBC QUARTERLY GROUNDWATER MONITORING REPORT <br /> Facility Address 1426 South Lincoln Street, Stockton, California <br /> Project Supervisor Travis Bryant <br /> Consulting Co/Contact Person Stratus Environmental, Inc I Jay Johnson, R G <br /> Consultant Project No 2002-1426-01 <br /> Primary Agency/Regulatory ID No Nuel Henderson /San Joaquin County Public Health Services <br /> WORK PERFORMED THIS QUARTER (First 2003) AND PREVIOUS QUARTER (Fourth 2002) <br /> 1 Stratus collected groundwater samples from wells MW-1 and MW-2 on November 13, 2002, and <br /> February 12, 2003 <br /> 2 Stratus compiled and evaluated groundwater monitoring data <br /> WORK PROPOSED FOR NEXT QUARTER(Second 2003) <br /> 1 The next sampling event is tentatively scheduled for May 2003 Groundwater samples will be <br /> collected for laboratory analysis from wells MW-1 and MW-2 <br /> 2 Groundwater samples will be analyzed at a state-certified analytical laboratory for total petroleum <br /> hydrocarbons as gasoline (TPHG) by EPA Method SW8015B/DHS LOFT Manual, and for <br /> benzene, toluene, ethylbenzene, total xylenes (BTEX), methyl tert-butyl ether (MTBE), tertiary <br /> amyl methyl ether (TAME), ethyl tertiary butyl ether (ETBE), di-isopropyl ether (DIPE), tertiary <br /> butyl alcohol (TBA), and 1,2-dichloroethane (1,2-DCA) by EPA Method SW8260B <br /> Current Phase of Project Monitoring <br /> Frequency of Groundwater Sampling All Wells = Quarterly <br /> Frequency of Groundwater Monitoring Quarterly <br /> Groundwater Sampling Date February 12, 2003 <br /> Is Free Product(FP) Present on Site No <br /> FP Recovered This Quarter No <br /> Cumulative FP Recovered to Date NA <br /> Approximate Depth to Groundwater 22 81 to 22 97 feet below top of well casing <br /> Groundwater Flow Direction NA <br /> Groundwater Gradient NA <br /> P U B C1StocktonlQrtly1200311BC Stockton-1Q03 DOC 5TRA ru5 <br />