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PUBLIC HEALTH )ERVICES <br /> SAN JOAQUIN COUNTY <br /> ENVIRONMENTAL HEALTH D SIGN X <br /> Karen Furst, M.D., M.P.H., Health Officer , `p <br /> 304 East Weber Avenue, Third Floor- Stockton, CA 952 <br /> 2091468-3420 (a <br /> TOSCO MARKETING COMPANY APR 16 1998 <br /> ED RALSTON <br /> 2000 CROW CANYON PLACE STE 400 <br /> SAN RAMON CA 94583 <br /> RE: UNOCAL-TOSCO#5417 SITE CODE: 507794 <br /> 1700 E. Yosemite Ave. (Highway 120) <br /> Manteca, CA., 95336 <br /> San Joaquin County Public Health Services, Environmental Health Division (PHS-EHD) <br /> has reviewed the April 6, 1998 report from Pacific Environmental Group, "Soil Sampling <br /> Results for Station Upgrade" received on April 8, 1S98 and has the following comments. <br /> Elevated levels of petroleum constituents have bee detected in the soil under each of <br /> the four dispensers on the two islands located at this site. In order to determine the <br /> extent of the contamination, PHS-EHD will require further investigation. <br /> Due to the dark colored sandy soils with strong pet oleum odors left in place after the <br /> limited over-excavations on January 14, 1998 and the shallow groundwater known to be <br /> in this area, a groundwater and lateral I vertical soil plume delineation investigation is <br /> warranted. A workplan that includes soil and groundwater sample collection <br /> throughout the site is to be submitted to PHS-E D by June 19, 1998. <br /> A boring permit application, the $89 fed, and a site pecific safety plan should also be <br /> submitted with the workplan. <br /> Please direct your correspondence to Michael Infur a, Senior RENS, and you may tali <br /> him at (209) 468-3454 should you have any questions or wish to discuss the site. <br /> Donna Heran, REHS, Director <br /> Enviro mental Health Division <br /> Michael J. Infurna Jr., Senior REHS Margaret Lagorio, REHS <br /> LOP / Site Mitigation Unit IV Supervisor <br /> MI/ <br /> c: CVRWQCB - Pat Anderson <br /> c: Pacific Envir Group - Joe Muzzio, 2025 Gateway Pl.#400, San Jose, 95110 <br /> A Division of San Joaquin County Talth Care Services <br />