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' Environmental <br /> Resources <br /> Management <br /> 1777 Botelho Drive <br /> _ Suite 260 <br /> Walnut Creek,CA 94596 <br /> (925)946-0455 <br /> (925)946-9968(Fax) <br /> 27 January 2000 <br />' Harlin Knoll <br /> Public Health Services <br /> San Joaquin County <br />' 304 E Weber Avenue, Third Floor ERMCD <br /> Stockton, CA 95201-0388 <br />' Subject: Groundwater Sampling Results <br /> Former Heinz Facility <br />' Tracy, California <br /> Dear Mr Knoll <br />' On behalf of Heinz USA (Heintz), ERM has prepared this letter to present <br /> the results of groundwater sampling performed on 6 January 2000 at the <br /> former Heinz facility (site) in Tracy, California This letter presents the <br /> project background, the results of the current groundwater monitoring <br />' event, an evaluation of the historical groundwater sampling results, and <br /> recommendations for additional activities at the site <br />' BACKGROUND <br /> Two underground storage tanks (USTs) were removed at the site on 18 <br /> February 1998 After removing the two USTs, contaminated soils and <br /> groundwater were removed from each tank excavation A soil <br /> (GeoProbe) and groundwater (HydroPunch) investigation was also <br /> conducted in the areas surrounding each former UST location to <br /> characterize the extent of chemical impact to soil and groundwater This <br /> work was conducted under the direction of the San Joaquin County <br /> Public Health Services, Environmental Health Division (County) The <br />' results of the UST removal and subsequent soil and groundwater <br /> investigation and removal activities are summarized in Underground <br /> Storage Tank Removal Activities at Former Heinz Facility, 757 Eleventh Street, <br /> \ Tracy, CA (ERM, 22 May 1998) <br />' Following the completion of the tank removal and investigation <br /> activities, three monitoring wells were installed at each former UST <br /> location at the request of the County ERM took groundwater elevation <br />