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Date January 30, 2004 <br /> i <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 Coun Public Health Services <br /> WORK PERFORMED THIS QUARTER(Fourth 2003) <br /> 1 Stratus monitored groundwater elevations and collected groundwater samples from wells MW-13, <br /> MW-14, and AS-1 on December 16, 2003 Wells MW-1 and VW were dry <br /> 2 Stratus compiled and evaluated groundwater monitoring data <br /> WORK PROPOSED FOR NEXT QUARTER(First 2004) <br /> 1 The next sampling event is tentatively scheduled for March 2004 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 (ETRE), 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 /> Current Phase of Project Monitoring <br /> Frequency of Groundwater Sampling All Wells=Quarters <br /> Frequency of Groundwater Monitoring Quarterly <br /> Groundwater Sampling Date December 16, 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 60 to 52 79 feet below top of well casco <br /> Groundwater Flow Direction NA <br /> Groundwater Gradient NA <br /> P ITeichert\Stockton-1031Quarterly120031Tejchert_4Q03 DOC 5rRA7-05 <br />