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DRAFT <br /> Area 3: <br /> • VOCs: benzene, toluene, ethylbenzene, xylenes (total) <br /> • SVOCs: benzo(k)fluoranthene, fluoranthene <br /> • Metals: antimony, arsenic, copper, lead, mercury, zinc <br /> Area 4: <br /> • SVOCs: anthracene,benzo(a)anthracene, benzo(b)fluoranthene, <br /> benzo(k)fluoranthene, benzo(a)pyrene,benzo(g,h,i)perylene, chrysene, <br /> fluoranthene, fluorene, indeno (1,2,3) pyrene,phenanthrene <br /> • Metals: cadmium, lead, zinc <br /> 1.2 Exposure Assessment <br /> Following the selection of COCs, an exposure assessment was conducted to identify <br /> potential routes of exposure. In order for an exposure scenario to be complete,there must <br /> be a source of chemicals, a mechanism for transporting the chemicals to the exposure <br /> point, and receptors (human)present at the exposure point. The exposed population for <br /> each of the potential pathways includes future residents,both child and adult. The PEA <br /> Guidance Manual specifies an evaluation of a residential exposure scenario. However, <br /> because future redevelopment of the South Shore properties will involve construction and <br /> potentially include property uses other than residential, the risk evaluation also included <br /> risk calculations for chemical exposure to a construction worker, landscape maintenance <br /> worker(protective of recreational visitor), commercial/industrial worker, as well as a <br /> resident. <br /> Exposure pathways evaluated in each area are summarized in Figures 1 through 4 <br /> (Conceptual Site Models) and are summarized in Table 10. <br /> SOMA 99-2218 3 12/10/99 <br />