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Date March 25, 2003 <br /> • APACHE PLASTICS QUARTERLY GROUNDWATER MONITORING REPORT <br /> Facility Address 2050 East Fremont Street, Stockton, California <br /> Project Supervisor Larry Beasley <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 /San Joaquin County Public Health Service/2313 <br /> WORK PERFORMED THIS QUARTER(First 2003) <br /> 1 Stratus measured groundwater elevations and collected groundwater samples from wells MW-2, <br /> MW-4, MW-5, MW-7 through MW-12, VEW-1, and VEW-2 on February 5, 2003 Well MW-6 could <br /> not be sampled due to a truck parked over the well <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 analysts 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 SW8015B/DHS 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(DIPE), ternary 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 82608 analysts <br /> 3 Upon receipt of regulatory approval, Stratus will begin implementing the additional environmental <br /> assessment and well abandonment activities outlined In the Work Plan for Additional Site <br /> Assessment(dated April 9, 2002)and Work Plan Addendum (dated October 1, 2002) <br /> Current Phase of Project Assessment <br /> Frequency of Groundwater Sampling All Wells= Quarterly <br /> Frequency of Groundwater Monitoring Quarterly <br /> Groundwater Sampling Date February 5,2003 <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 81 to 50 40 feet below top of well casing <br /> Depth to Groundwater(lower zone) 50 03 to 51 60 feet below top of well casing <br /> Groundwater Flow Direction/Gradient(upper zone) East/0 0013 ft/ft <br /> Groundwater Flow Direction/Gradient(lower zone) South/0 008 ft/ft <br /> P\Apache Plastics\Quarterly reports\2003\Apache_1Q03 DOC SrRAru� <br />