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IL Environmental <br /> Resources <br /> r Management <br /> t tll <br /> 1777 Botelho Drive <br /> Suite 260 <br /> Walnut Creek,CA 94596 <br /> (925)946-0455 <br /> 9 November 2000 (925)946-9968(Fax) <br /> Harlin Knoll <br /> Public Health Services <br /> San Joaquin County <br /> 304 E Weber Avenue, Third Floor * � <br /> Stockton, CA 95201-0388 ERMO <br /> Subject: Monitoring Well Installation Summary and <br /> Ground Water Sampling Results <br /> Farmer Heinz Facility <br /> Tracy, California <br /> Dear Mr Knoll <br /> On behalf of Heinz USA (Heinz), ERM has prepared this letter to present <br /> a summary of the monitoring well installation activities conducted at the <br /> former Heinz facility (site) in Tracy, California The results of ground <br /> water sampling subsequently performed at the site are also presented <br /> Background <br /> On behalf of Heinz, ERM submitted the Underground Storage Tank Closure <br /> Report to the San Joaquin County, Public Health Services, Environmental <br /> Health Division (County) on 7 April 2000 This report requested that the <br /> two former underground storage tank locations at the site be closed <br /> Following their review of this report, the County requested that <br /> additional investigation activities be conducted at each former tank site <br /> In letters dated 15 June and 7 August 2000 the County requested that <br /> additional monitoring wells be installed to define the depth of ground <br /> water impacts at each former tank site After correspondence with the <br /> County, ERM submitted a workplan for monitoring well installation and <br /> sampling activities on 11 August 2000 <br /> The workplan included installation of 1 monitoring well, screened from a <br /> depth of 30 to 40 feet below ground surface (bgs), at each former tank <br /> location The workplan also called for two rounds of ground water <br />-� sampling to be performed in all wells at the site following installation of <br /> the new wells <br />