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Date Aril 20, 2004 <br /> •) APACHE PLASTICS QUARTERLY GROUNDWATER MONITORING REPORT <br /> Facility Address 2050 East Fremont Street, Stockton, California <br /> Consulting Co/Contact Person Stratus Environmental, Inc 1 Jay Johnson, R G _ <br /> Consultant Project No 2005-2050-01 <br /> Primary Agency/Regulatory ID No Lori Duncan 1 San Joaquin County Environmental Health Department <br /> /2313 <br /> WORK PERFORMED THIS QUARTER (First 2004) <br /> 1 Stratus measured groundwater elevations and collected groundwater samples from wells VEW-1, <br /> VEW-2, MW-2, MW4, and MW-5 through MW-12 on November 10, 2003 Well MW-3 remains <br /> obstructed and could not be monitored or sampled <br /> 2 Stratus compiled and evaluated groundwater monitoring data <br /> 3 Stratus installed groundwater monitoring wells MW-15 through MW-18, properly destroyed well <br /> MWX,, and re-developed well MW-8 on March 29 through 31, 2004 <br /> 1-L <br /> WORK PROPOSED FOR NEXT QUARTER(Second 2004) <br /> 1 The next sampling event is tentatively scheduled for May 2004 Groundwater samples will be <br /> collected for laboratory analysis from wells VEW-1, VEW-2, and MW-2 through MW-12 <br /> 2 Groundwater samples will be analyzed at a state-certified analytical laboratory for total petroleum <br /> hydrocarbons as gasoline (TPHG) by EPA Method SW8015BIDHS LUFT Manual, and for benzene, <br /> toluene, ethylbenzene, total xylenes (BTEX), methyl tert-butyl ether (MTBE), tertiary amyl methyl <br /> ether (TAME), ethyl tertiary butyl ether(ETBE), di-isopropyl ether(DIPS), tertiary butyl alcohol (TBA), <br /> 1,2-dichloroethane (1,2-DCA), and 1,2-dibromoethane (EDB) by EPA Method SW8260B The <br /> laboratory will attempt to identify all peaks detected in the EPA Method 8260B analysis <br /> 3 Stratus will prepare and submit a report of the site assessment activities <br /> Current Phase of Project Assessment 1 Monitoring <br /> Frequency of Groundwater Sampling All Wells= Quarterly <br /> Frequency of Groundwater Monitoring Quarte <br /> Groundwater Sampling Date February 23,2004 <br /> Is Free Product(FP) Present on Site No <br /> FP Recovered This Quarter NA <br /> Cumulative FP Recovered to Date NA <br /> Depth to Groundwater(upper zone) 48 09 to 49 98 feet below top of well casing <br /> Depth to Groundwater(lower zone) 49 18 to 50 78 feet below top of well casing <br /> Groundwater Flow Direction/Gradient(upper zone) Fast-southeast/0 001 ft/ft <br /> Groundwater Flow Direction/Gradient(lower zone) South-southeast 10 008 ft/ft <br /> p\Apache Piastres\Quarterly reports\2004\Apache_1Q04 DOC STRATUS <br />