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INITIAL RELEASE DDJC Tracy <br /> TABLE 1. Operable Unite <br /> Operable <br /> Unit No. Site Description Waste;Disposal History Contaminated Media Remedial Altenaative <br /> OU 1 VOC groundwater contaminant plume Waste disposal practices and accidental Groundwater: TCE, A pump-and-treat system to • <br /> in the Upper Tulare Aquifer emanating spills in the former open drum and PCE,and 1,1-DCE remediate contaminant hot <br /> from the northern portion of the site maintenance areas along the norther spots,minimize contaminant <br /> and extending off site for boundary of the site. transport off site,and clean up <br /> approximately one-half mile to the the plume to EPA or CA MCLS <br /> north-northeast. for TCE, PCE, and 1,1-DCE. It <br /> is scheduled for operation in <br /> 1997-1998. The system is also <br /> expected to control migration of <br /> pesticides. <br /> OU 2A Sites with contaminated soil serving as <br /> OU 1 sources. OU 2A sites include: <br /> SWMU 1/Area 2 Area contains two sewage lagoons and a Soil: VOCs,SVOCs, No further action required.The <br /> drum storage area. pesticides,metals,and sites in OU 2A do not pose a • <br /> total petroleum significant threat to <br /> h drocarbons groundwater. <br /> Area 1,Building 237 Area reportedly used for cleaning Soil: VOCs and <br /> asphalting equipment and solvent storage. SVOCs <br /> Area 3 1-Iistorically used for drum storage;site of Soil: VOCs <br /> several accidentals ills. <br /> 26 <br />