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enviros® <br /> and xylenes (BTEX). The results of this investigation are documented in Aegis' April 13, <br /> 1990"Pre-Tank Replacement Site Assessment Results Report." <br /> In January 1994, Aegis installed Wells MW-1, MW-2, and MW-3. Soil and ground water <br /> samples collected from these well borings were ND for TPH and BTEX. The results of <br /> this investigation are documented in Aegis' April 18, 1994 "Site Investigation/Monitoring <br /> Well Installation Results Report." <br /> Quarterly ground water monitoring and sampling are performed and results reported to <br /> SJCEHD. <br /> Scope of Work <br /> The proposed scope of work includes removal of three existing USTs and associated <br /> product piping, and replacement with two double-wall fiberglass USTs and double-wall <br /> fiberglass product piping. This work is performed to upgrade the USTs and piping system <br /> to comply with construction standards required by 1998. <br /> The work is summarized in the following tasks. <br /> Task 1 -Underground Storage Tank Removal <br /> The UST removal project is scheduled to begin October 21, 1996. Permitting for the tank <br /> removal has been completed. <br /> The USTs will be uncovered and each tank will be triple rinsed while still in the open tank <br /> pit. Twenty pounds of solid carbon dioxide per 1,000 gallons of tank volume will be <br /> added to each tank to render potentially flammable vapors within the tank inert. Tank <br /> vapors will be monitored, and when levels drop to acceptable concentrations, the tanks will <br /> be removed from the excavation and loaded onto trucks for removal from the site. <br /> Transportation and disposal services will be provided by the following companies: <br /> Hazardous Waste Hauler: <br /> Crosby and Overton <br /> Ph. 1-800-821-0424 <br /> EPA#CAD982524480 <br /> Destination of Tank Rinsate: <br /> Romic <br /> Ph. 415-324-1638 <br /> EPA#CAD 009452657 <br /> Destination of Tanks: <br /> Erickson, Inc. <br /> 510-235-1393 <br /> EPA#CAD009466392 <br /> 96378 2 <br />