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% <br /> Date October 23, 2003 <br /> TEICHERT (STOCKTON) QUARTERLY GROUNDWATER MONITORING REPORT <br /> Facility Address 103 North E Street, Stockton, California <br /> Consulting Co/Contact Person Stratus Environmental, Inc /Jay Johnson <br /> Consultant Project No 2001-0103-01 <br /> Primary Agency/Regulatory ID No Harlin Knoll/San Joaquin County Public Health Services <br /> WORK PERFORMED THIS QUARTER (Third 2003) <br /> 1 Stratus monitored groundwater elevations and collected groundwater samples from wells MW-13, <br /> MW-14, and AS-1 on September 10, 2003 Wells MW-1 and VW were dry <br /> 2 Stratus compiled and evaluated groundwater monitoring data <br /> WORK PROPOSED FOR NEXT QUARTER (Fourth 2003) <br /> 1 The next sampling event is tentatively scheduled for December 2003 Groundwater samples will be <br /> collected for laboratory analysis from wells MW-1, MW-13, MW-14, 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 tert-butyl ether (MTBE), tertiary amyl methyl <br /> ether (TAME), ethyl tertiary butyl ether (ETBE), di-isopropyl ether (DIPE), tertiary butyl alcohol (TBA), <br /> 1,2-dichloroethane (1,2-DCA), and 1,2-dibromoethane (EDB) by EPA Method SW8260B <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 10, 2003 <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 52 55 to 52 75 feet below top of well casing <br /> Groundwater Flow Direction NA <br /> Groundwater Gradient NA <br /> i <br /> P1TeichertlStockton-1031Quarterly120031Teichert_3Q03 DOC 5 rRA W5 <br />