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Date October 8, 2004 <br /> • <br /> TEICHERT (STOCKTON) QUARTERLY GROUNDWATER MONITORING REPORT <br /> Facility Address 103 North E Street, Stockton, California <br /> Consulting Co/Contact Person Stratus Environmental, Inc 1 Jay Johnson <br /> Consultant Project No 2001-0103-01 <br /> Primary Agency/Regulatory ID No Harlin Knoll I San Joaquin County Public Health Services <br /> WORK PERFORMED THIS QUARTER(Third 2004) <br /> 1 Stratus monitored groundwater elevations and collected groundwater samples from wells MW-13, <br /> MW-14, and AS-1 on September 7, 2004 Wells MWA and VW were dry <br /> 2 Stratus compiled and evaluated groundwater monitoring data <br /> WORK PROPOSED FOR NEXT QUARTER(Fourth 2004) <br /> 1 The next sampling event is tentatively scheduled for December 2004 Groundwater samples will be <br /> collected for laboratory analysis from wells MWA, MWA 3, MWA 4, VW, and AS-1 <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 (DIPS), tertiary butyl alcohol (TBA), <br /> 1,2-dichloroethane (1,2-DCA), and 1,2-dibromoethane (EDB) by EPA Method SW8260B <br /> 3 Bio-venting will be initiated at the site Subsurface conveyance piping will be installed to allow a <br /> compressor to deliver air to wells MW-13, MW-14, and AS-1 Installation of the compressor and <br /> conveyance piping is scheduled for October 12, 2004 <br /> Current Phase of Project Monitoring <br /> Frequency of Groundwater Sampling All Wells=Quarterly <br /> Frequency of Groundwater Monitoring Quarterly <br /> Groundwater Sampling Date September 7, 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 54 25 to 54 41 feet below top of well casing <br /> Groundwater Flow Direction NA <br /> Groundwater Gradient NA <br /> a <br /> P 1TeichertNStockton-1031Quartcriy120041Teichert_3Q04 DOC 5TRATU5 <br />