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PACIFIC <br /> ENVIRONMENTAL <br /> GROUP INC <br /> w <br /> February 14, 1997 J�1j <br /> Project 310-097 IB <br /> Mr Robert Boust <br /> Unocal Corporation <br /> 2000 Crow Canyon Place, Suite 400 <br /> San Ramon, Califorrua 94583 <br /> Re Underground Fuel Tank Remora] and Monitoring Well Installatton <br /> Former Unocal Service Station 0123 <br /> 10')4 Central Avenue at I Ith Street <br /> Tracy, California <br /> Dear Mr Boust <br /> This letter report has been prepared to document environmental activities performed by <br />'.i Pacific Environmental Group, Inc (PACIFIC), at the former Unocal Corporation (Unocal) <br /> site referenced above PACIFIC's activities were performed at the request of Unocal <br /> Site activities documented in this letter report included, the removal of two 550-gallon <br /> underground fuel storage tanks (USTs) and associated underground product piping, the <br /> in-situ abandonment of one 550-gallon UST, the installation and sampling of one additional <br /> groundwater monitoring well, and the disposal of soils <br /> BACKGROUND <br /> Site History <br /> The site is currently an asphalt-paved parking lot owned by Wells Fargo Bank of North <br /> Amenca (Wells Fargo) The site is bounded by 11th Street on the north, Central Avenue <br /> on the west, a vacant Wells Fargo building on the south, and light commercial structures <br /> on the east A site map showing former and existing features is shown on Figure 1 <br /> The site v4as an operating Unocal service station from approximately 1921 until <br /> 1965 The service station originally included three 550-gallon USTs in the sidewalk <br /> at the northern edge of the site, a product dispenser island in the northwestern <br /> 4 <br /> 2025 Gateway Place, Suite 440, San Jose, California 95110 (408) 441-7500 FAX (408) 441-7539 <br />