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' Environmental <br /> Resources <br /> Management <br /> DFC � V �� 1777 Botelha Dave <br /> f <br /> SEP 2 7 Z DOZ suite 260 <br />' Walnut Creek,CA 94596 <br /> ENVIRONMENT HEALTH (925)946-0455 <br /> PERMIT/SERVICES (925)946-9968(fax) <br />' 25 September 2002 <br />' Mr Harlan Knoll t <br /> Public Health Services + <br />' San Joaquin County ERM® <br /> 304 E Weber Avenue, Third Floor <br /> Stockton, CA 95201-0388 <br /> Subject Ground Water Sampling Results <br /> Former Heinz Facility <br /> Tracy, California <br /> Dear Mr Knoll <br /> On behalf of Heinz North America (Heinz), Environmental Resources <br /> Management (ERM) has prepared this letter to present the results of <br /> ground water sampling conducted at the former Heinz facility (site) in <br /> Tracy,California <br /> IBased on conversations with you and the Regional Water Quality <br /> Control Board in July 2001, ERM understands that although additional <br /> Iremediation activities will not be required at the site, our previous case <br /> closure request has not been granted due to the continued presence of <br /> I dissolved hydrocarbons in ground water As we have discussed, because <br /> the extensive remediation activities have removed the hydrocarbon <br /> sources and dissolved hydrocarbons in ground water appear stable, <br /> Heinz has reduced the ground water monitoring frequency to an annual <br /> basis <br /> The data contained in this report represent the results of the 2002 annual <br /> ground water monitoring tasks (Appendix A) <br /> GROUND WATER SAMPLING RESULTS <br /> Water level measurements and ground water samples were collected <br /> from eight monitoring wells on 18 June 2002 Ground water samples <br /> were analyzed for total petroleum hydrocarbons as gasoline (TPH-g) <br /> (United States Environmental Protection Agency [USEPA] Method 8015), <br /> and benzene, toluene, ethylbenzene, and xylenes (BTEX) (USEPA <br />