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Ali <br /> PACIFIC <br /> ENVIRONMENTAL <br /> GROUP INC <br /> April 6, 1998 APR - 8 1998 <br /> Prof ect 311-179 IA ENVIRONMENTAL HEALTH <br /> PERMIT/SERVICES <br /> Mr Ed Ralston <br /> Tosco Marketing Company <br /> 2000 Crow Canyon Place, Suite 400 <br /> San Ramon, CaHorina 94583 <br /> Re Soil Sampling Results for Station Upgrade <br /> Tosco (Former Unocal) Service Station 5417 <br /> 1700 East Yosemite Avenue (Highway 120) <br /> Manteca, California <br /> Dear Mr Ralston <br /> On behalf of Tosco Marketing Company (Tosca), Pacific Environmental Group, Inc <br /> (PEG) has prepared this letter to document the results of a $oil investigation following <br /> the underground storage tank (UST) and product dispenser upgrades at the site refer- <br /> enced above This investigation was performed by PEG at Tosco's request <br /> SITE DESCRIPTION <br /> The site is located at 1700 East Yosemite Avenue in Manteca, California (Figure 1) <br /> The site is an operating service station and mini-mart that retails gasoline fuel The site <br /> currently contains two gasoline USTs (I 0,000-gallon capacity) and associated product <br /> lines and dispensers <br /> SUAEIlVLARY OF WORK PERFORMED <br /> Representatives for Balch Construction of Milpitas California, performed station <br /> upgrades These upgrades included replacing product dispensers and the UST sumps <br /> On January 14, 1998, at the direction of Mr Michael Inf lma, Environmental Health <br /> Specialist with the San Joaquin County Public Health Services, PEG collected soil <br /> samples beneath each former product dispenser The product dispenser samples, desig- <br /> nated PD-I through PD-4, were collected at depths of approximate] 2 feet below each P <br /> Y ` <br /> dispenser Additional soil samples were collected at approximate depths of 5 feet at the <br /> q,, d . <br /> 1-11 <br /> 2025 Gateway Place 5urte 440, San Jose, Caloomia 95110 (408)441-7500 FAX (408) 441-7539 <br />