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�ft Quarterly Monitoring Report <br /> First Quarter - 2004 <br /> 1 � i <br /> i <br /> ' 1 .0 Introduction <br /> 1 1 Scope of Work <br /> ' Environeering Inc (EI) has been retained by California Tank Lines, Inc (CTL) to provide <br /> professional environmental services at 3105 South El Dorado Street, Stockton, CA (the Site) <br /> The location of the Site is shown on Figures 1 and 2 This report documents groundwater <br /> ' sampling for the firs quarter, 2004, conducted at the Site on March 10, 2004 The sampling <br /> period covered m this report is from January 2004 to March 2004 <br /> ' a 1.2 Monitoring Activities Performed <br /> « � f <br /> i Groundwater monitoring and sampling at the Site during this quarter took place on March 10, <br /> ' 2004 This quarter's sampling included the following <br /> Groundwater elevation measurements in all wells <br /> 1 W ■ Removal of free product in MW-2 <br /> t <br /> ■ Quarterly groundwater sampling of monitor wells MW-1, MW-2,MW-3,and MW-4 <br /> ■ Laboratory analysis of ground water samples for <br /> 1 <br /> o Volatile Organic Compounds [benzene, toluene, ethyl benzene and xylenes <br /> ' (BTEX)],Fuel Oxygenates [methyl-tent-butyl ether(MTBE), di-isopropyl ether <br /> (DIPE), ethyl-tertiary-butyl ether (ELBE), tertiary-amyl-methyl ether (TAME), <br /> ' ! tertiary-butanol (TBA)], and TPH-gasoline by EPA Method 8260B Volatile <br /> Organic Compounds by Gas Chromatography/Mass Spectrometry(GC/MS) <br /> o Total petroleum hydrocarbons as diesel and motor oils (TPH-diesel and TPH- <br /> ' oil)by Method LUFT GUMS <br /> The locations of all monitor wells as well as historical boreholes are shown on Figure <br /> 3 <br /> Appendix A provides a historical summary of field activities at the site and Appendix B <br /> contains this quarter's original Well Purging and Sampling Documentation The laboratory <br /> {`{ results of the groundwater analyses for the current monitoring period as well as historical <br /> results are shown on Table 2 Laboratory Analytical Reports and the Chain-of-Custody Form <br /> ' are provided in Appendix C <br /> 9 <br /> y <br />