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ra fE Environmental <br /> CEI Resources <br /> REManagement <br /> MAR 17 2000 1777 Botelho Drive <br /> ENVIRONMENTAL HEA Suite 260 <br /> PERMIT/SERVICES�TH Walnut Creek,CA 94596 <br /> (925)946-0455 <br /> (925)946-9968(Fax) <br /> 13 March 2000 <br /> Harlin Knoll <br /> Public Health Services <br /> San Joaquin County <br /> 304 E Weber Avenue, Third Floor ERM® <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 (Heinz), ERM has prepared this letter to present <br /> the results of groundwater sampling performed on 29 February 2000 at <br /> the former Heinz facility (site) in Tracy, California <br /> Groundwater samples were collected from six monitoring wells at the <br /> site during the current sampling event The groundwater samples were <br /> analyzed for total petroleum hydrocarbons as gasoline (USEPA Method <br /> 8015), benzene, toluene, ethylbenzene, and xylenes (USEPA Method <br /> 8020), methane (USEPA Method 8015B modified), dissolved iron and <br /> manganese (USEPA Method 6010B), and nitrate and sulfate (USEPA <br /> Method 300 0) The groundwater sampling analytical results for the <br /> current and historical sampling events are summarized in Tables 1 and 2 <br /> (Attachment A) Ground water elevation measurements collected during <br /> the sampling event are included in Table 3 Copies of the laboratory <br /> analytical results and well sampling data are included as Attachments B <br /> and C, respectively <br /> As you are aware, ERM is currently preparing a site closure report for <br /> the site on behalf of Heinz This forthcoming report will present a <br /> detailed analysis of groundwater sampling results at the site if you have <br /> any questions regarding the sampling results, please call me at <br /> (925) 946-0455 <br /> f <br />