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Health and Safety Plan <br /> 1319 & 1327 South Madison Street, Stockton, CA <br /> 432770 <br /> 3.1 Specific Chemicals of Concern <br /> The chemicals listed in the Table 4 below include the identification of chemical contaminants <br /> known and/or suspected of being present on-site, the affected media, known concentrations (if <br /> applicable), the Permissible Exposure Limit (PEL) or Time Weighted Averages (TWA), and the <br /> Action Level (i.e., 50% of the PEL/TWA). Chemical information and Applicable Safety Data <br /> Sheet(s) (SDS) are included in Appendix B. <br /> Table 4: Chemicals of Concern <br /> SOIL AND SOIL VAPOR <br /> Lower Range Higher Range PEL/TLV <br /> Chemical Concentration Concentration (pp 3) <br /> (mg/kg) (mg/kg) m or mg/m <br /> PCE Unknown Unknown 1 ppm <br /> Benzene Unknown Unknown 1 ppm <br /> Ethylbenzene Unknown Unknown 100 ppm <br /> Toluene Unknown Unknown 500 ppm <br /> Xylenes Unknown Unknown 900 ppm <br /> Pagel <br />