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EXECUTIVE SUMMARY <br /> 1 <br /> On behalf of Heinz USA (Heinz), Environmental Resources Management <br /> (ERM) has prepared this report as a follow-up to the report titled <br /> Underground Storage Tank Removal Activities at Former Heinz Facility (ERM, <br /> 22 May 1998) Specifically, this report presents the results of the soil and <br /> ground water investigation performed on 11 February 1999 at the former <br /> Heinz facility in Tracy,California (site) This report provides the <br /> additional site investigation information required based upon an <br /> evaluation of results from the current and previous site investigations An <br /> evaluation of the need for remediation and potential remediation <br /> technologies is also presented Finally, this report presents a plan and <br /> schedule for implementation of remedial activities <br />' <br /> GENERAL BACKGROUND <br />' ERM identified and subsequently removed two gasoline underground <br /> storage tanks (USTs) at the site on 18 February 1998, which included <br /> M removing 353 tons of contaminated soil from the UST excavations and <br /> pumping 20,280 gallons of contaminated ground water from the <br /> excavations ERM also investigated soil and ground water in the areas <br /> 1 surrounding each former UST location to characterize and define the <br /> extent of chenucal impacts <br /> 1 Based on the findings of these previous investigations, San Joaquin <br /> County and the Central Valley Regional Water Quality Control Board <br />' requested that Heinz perform additional characterization of the site to <br /> determine the vertical distribution of impacted soil and ground water at <br /> each UST location In addition, the agencies requested that Heinz provide <br /> an evaluation of potential remedial strategies for compounds, specifically <br /> benzene, in ground water at the site <br /> 11 FEBRUARY 1999, INVESTIGATION <br />' Several soil and ground water samples were collected to provide <br /> information concerning the vertical distribution of impacted soil and <br />' ground water A review of the soil sampling results indicates that the <br /> extent of total petroleum hydrocarbons as gasoline (TPH-g) and benzene, <br /> toluene, ethylbenzene, and xylenes (BTEX) impacts at the site has been <br /> rdefined The sampling results indicate that the extent of TPH-g and BTEX <br /> impact is limited to shallow depths <br />' v <br />