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Quarterly g Monitorin Report <br /> 1 <br /> First Quarter - 200S <br /> i <br /> 1 .0 Introduction <br /> ' 1.1 Scope of Work <br /> 3 <br /> Envuroneenng Inc (EI) has been retained by California Tank Lines, Inc (CTL) to provide I <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 the first quarter of <br /> groundwater sampling conducted at the Site on March 11, 2005 The period covered in tins <br /> ' report is from January 2005 to March 2005 <br /> ' 1.2 Monitoring Activities Performed <br /> I <br /> 4 <br /> Groundwater monitoring and sampling at the Site during this quarter took place on March 11, E <br /> 2005 This quarter's sampling included the following <br /> a Groundwater elevation measurements in all wells <br /> • ■ Testing for natural attenuation indicators of groundwater samples, including pH, <br /> conductivity,and temperature <br /> ■ Removal of free product in MW-2 <br /> a Quarterly groundwater sampling of monitor wells MW-1,MW-2,MW-3,and MW4 <br /> ■ Laboratory analysis of ground water samples for <br /> o Volatile Organic Compounds [benzene, toluene, ethylbenzene and xylenes <br /> ' (BTEX)], Fuel Oxygenates [methyl-tert-butyl ether(NME),di-isopropyl ether <br /> (DIPE), ethyl-tertiary-butyl ether (ELBE), tertiary-amyl-methyl ether (TAME), <br /> tertiary-butanol (TBA), 1,2-dibromoethane (EDB), 1,2-dichloroethane <br /> (DCA12)], and TPH-gasolme by EPA Method 8260B Volatile Organic <br /> ' Compounds by Gas Chromatography/Mass Spectrometry(GUMS) <br /> o Total petroleum hydrocarbons as diesel and motor oils (TPH-diesel and TPH- <br /> ' oil)by Method LUFT GUMS t <br /> The locations of all monitor wells as well as historical boreholes are shown on Figure 3 <br /> Appendix A provides a lustoncal 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 penod as well as historical <br /> results are shown in Table 2 Laboratory Analytical Reports and the Cham-of-Custody Form <br /> are provided in Appendix C i <br /> I <br /> ; 1 � <br />