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a <br /> Date June 11, 2004 <br /> • IBC QUARTERLY GROUNDWATER MONITORING REPORT <br /> Facility Address 1426 South Lincoln Street, Stockton, California <br /> Consulting Co,/Contact Person Stratus Environmental, Inc /Jay Johnson, R G <br /> Consultant Project No 2002-1426-01 <br /> Primary Agency/Regulatory ID No Nuel Henderson /San Joaquin County Environmental Health <br /> Department <br /> WORK PERFORMED THIS QUARTER (Second 2004) <br /> 1 Stratus collected groundwater samples from wells MW-1 and MW-2 on May 10, 2004 <br /> 2 Stratus compiled and evaluated groundwater monitoring data <br /> WORK PROPOSED FOR NEXT QUARTER (Third 2004) <br /> 1 The next sampling event is tentatively scheduled for August 2004 Groundwater samples will be <br /> collected for laboratory analysis from wells MWA 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 LUFT Manual, and for benzene, <br /> • toluene, ethylbenzene, total xylenes (BTEX), methyl tertiary butyl ether(MTBE), tertiary amyl methyl <br /> ether (TAME), ethyl tertiary butyl ether (ETBE), di-isopropyl ether (DIPE), and tertiary butyl alcohol <br /> (TBA) by EPA Method SW8260B <br /> Current Phase of Project Monitoring <br /> Frequency of Groundwater Sampling All Wells =Quarter) <br /> Frequency of Groundwater Monitoring _ Quarterly <br /> Groundwater Sampling Date May 10, 2004 <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 23 77 to 23 81 feet below top of well casing <br /> Groundwater Flow Direction NA <br /> Groundwater Gradient NA <br /> P V B C\StocktonlQrt1y1200411BC Stockton-2Q04 DOC 5TRAW5 <br />