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t TracerRcnearch Corporation <br /> i <br /> i <br /> lw4 <br /> } EMMODUCTION <br /> A shallow soil gas and groundwater investigation was performed by Tracer Research <br /> Corporation(TRC) at 1515 West Weber Avenue in Stockton,California. The investigation <br /> �M< was conducted on March 1, 1990 under contract to Meinfelder. The purpose of the <br /> € investigation was to characterize the nature and extent of volatile organic compounds <br /> F4 (VOCs) present in the subsurface and the shallow groundwater. <br /> During this survey, a total of 2 soil gas.samples and 13 groundwater samples were <br /> collected and analyzed in the field. The analytical equipment was calibrated for the <br /> 1, following compounds: <br /> benzene <br /> toluene <br /> ethyibenzene <br /> xylenes <br /> total hydrocarbons <br /> Xylenes are reported as the total of the three xylene isomers and total hydrocarbons are <br /> approximately C4-C9 aliphatic, alicyclic and aromatic compounds. <br /> The compounds in this suite were chosen as target compounds based on their <br /> suspected presence in the subsurface and amenability to soil gas detection.'Soil gas samples <br /> were screened on the flame ionizations detector (FID). <br /> .,.. 1 <br />