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INITIAL RELEASE DDJC Tracy <br /> TABLE 2. Exposure Pathways <br /> Source of FEnvironmental Route of Exposed <br /> Pathway Name Contamination Medium Point of Exposure Exposure Population Comment <br /> Completed Exposure Pathway <br /> Private off-site TCE: DDJC Tracy Groundwater Private residences Ingestion, Private residents Past: • <br /> wells Carbon dermal contact, (estimated 8-20 • TCC:and carbon <br /> Tetrachloride: - and inhalation individuals) tetrachloride were detected in <br /> two domestic-use wells in the <br /> unknown <br /> 1980s and early 1990s at <br /> levels greater than <br /> comparison values,but below <br /> levels associated with adverse <br /> health effects. <br /> Current and Future: <br /> • No exposure is occurring or <br /> expected to occur because <br /> VOCs have not been detected <br /> above the MCLS in two <br /> domestic-use wells and the <br /> residents have been provided • <br /> with bottled water and/or a <br /> carbon filtration system. <br /> • DDJC Tracy will continue <br /> to monitor groundwater in the <br /> vicinity of the site. <br /> 29 <br />