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,� _- .• r ._ - - ,. .t'.�. '�: Y ,r' �� �r. � v 'azw�'n�i -�"- ,x3�;5 Yew' �� �. <br /> t <br /> [INION ICE COMPANY <br /> 4 1320 Weber,street, Stockton, California <br /> Ile-Excavation Work Plan and <br /> is <br /> Installation of Extraction Well <br /> g : <br /> f ` <br /> t : 1.0 PROJECT IDENTII%ICAT[ON <br /> WHF Environmental Consultants has been authorized by Union Ice Company to <br /> i respond to soil and groundwater contamination discovered during the removal of <br /> i underground storage tanks at 1320 Weber Street in Stockton, California. The <br /> follow'_-ig is a two part work plan which calls for: (1) the excavation and remediation <br /> of contaminated soil; and (2) the installation of an extraction well to remove floating <br /> product and address future groundwater treatment. <br /> r <br /> 2.0 SITE DESCRIPTION AND HISTORY <br /> This site, located at 1320 Weber Street in Stockton, California, serves as a cold and <br /> frozen storage facility, in addition to the manufacturing of ice (Figure 1). <br /> Four underground tanks were removed in December 1988. During removal, gasoline <br /> contamination was found in the soils and floating on the groundwater surface at <br /> approximately 15 feet. <br /> The facility is nearly surrounded by the Stockton Deep Walter Channel and Mormon <br /> Slough (Figure 2). <br /> In March of 1989, six monitoring wells were installed by WHF Environmentallmll <br /> Enterprises, in addition to three previously installed wells by'URS. One well, MW- <br /> 4D, was installed into the second aquifer to a depth of 60 feet. Apparently, <br /> groundwater contamination is confined to the upper aquifer. <br /> A soil vapor survey, conducted in May 1990, has confirmed the presence of <br /> hydrocarbon contamination in this area, and has indicated a downgradient (SE) <br /> migration of floating product on the groundwater surface(See Plate 3 and Appendix <br /> B). <br /> t <br /> s - <br /> C <br />