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Date Februa 3, 2005 <br /> i <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 /> 12313 <br /> WORK PERFORMED THIS QUARTER(Fourth 2004) <br /> 1 Stratus measured groundwater elevations and collected groundwater samples from wells VEW-1, <br /> MW-2, MW-4 through MWA1, and MW-15 through MWA8 on November 19, 2004 Well MW-3 <br /> remains obstructed and well VEW-2 was dry <br /> 2 Stratus compiled and evaluated groundwater monitoring data <br /> WORK PROPOSED FOR NEXT QUARTER (First 2005) <br /> 1 The next sampling event is tentatively scheduled for February 2005 Groundwater samples will be <br /> collected for laboratory analysis from wells VEW-1, VEW-2, MW-2, MW-4 through MW-11, and <br /> MW-15 through MW-18 <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(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 Offsite well installation, re-construction, and destruction activities on the south side of East Fremont <br /> Street will be initiated once an encroachment permit has been obtained from the City of Stockton <br /> Current Phase of Protect Assessment I Monitoring <br /> Frequency of Groundwater Sampling All Wells= Quarterly <br /> Frequency of Groundwater Monitoring Quarter) <br /> Groundwater Sampling Date November 19, 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(shallow wells) _45 11 to 53 66 feet below top of well casing <br /> Groundwater Flow Direction/Gradient(shallow wells) Southeast/0 0006 ft/ft <br /> Depth to Groundwater(mid-depth wells) 52 14 to 52 68 feet below top of well casing <br /> Groundwater Flow Direction/Gradient (mid-depth wells) NA <br /> K\Apache Plastics\Quarterly reports120041Apache_4Q04 DOC 57"KATU5 <br />