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• UNDERGROUND STORAGE TANK <br /> ADDITIONAL INVESTIGATION WORK PLAN <br /> TRACY, CA FACILITY, HOLLY SUGAR CORPORATION <br /> 1 0 INTRODUCTION <br /> Holly Sugar Corporation, d b a Spreckels Sugar Company (Spreckels), operates a sugar <br /> packaging and distribution facility in Tracy, California Spreckels' Tracy facility is located <br /> approximately one mile north of the City of Tracy Continuing operations at the facility include <br /> handling, packaging, and loading of sugar Groundwater quality at two former underground <br /> storage tank (UST) locations has been periodically monitored by Spreckels during recent years <br /> Additional investigation has been requested by the San Joaquin County Public Health Services <br /> Environmental Health Division (San Joaquin County) to evaluate potential site closure actions <br /> The two former UST locations being monitored are referred to as Site B, former gasoline UST <br /> located near the Tare Lab, and the former fuel oil Bunker Site, located near aboveground <br /> storage tanks Discussions between Spreckels and Environmental Health have resulted in <br /> proposed additional sampling and analyses <br /> 2 0 ADDITIONAL INVESTIGATION <br /> Based on these discussions, Spreckels proposes to conduct an additional soil and groundwater <br /> investigation at these two former UST sites Sampling locations and groundwater and soil <br /> analyses have been identified for each site <br /> 2 1 Field Activities <br /> Spreckels proposes to install one direct push probe to groundwater depth at each former UST <br /> site (Site B and former bunker) The borings will be located generally down-gradient from the <br /> former USTs to further evaluate the extent of potential soil and groundwater impacts One <br /> boring is proposed north of the former bunker site and dust beyond the molasses aboveground <br /> storage tanks The second proposed boring location is east of the Site B UST site, beyond the <br /> Tare Lab location Final boring locations will be confirmed in the field <br /> These will be installed using direct push technology to approximately 5 feet below groundwater <br /> depth The probe borings will be continuously sampled and logged by a qualified geologist or <br /> engineer using the Unified Soils Classification System (USCS <br /> . Soil samples at 5 and 10 feet below-ground-surface (ft-bgs) will be prepared for laboratory <br /> analyses A groundwater sample will be collected from the probe boring using a temporary <br /> H SprolectslSpreckelslTracy\FinallLelters WKnol101wkplan doc 1 <br />