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Manteca, CA Health&Safety Plan <br /> BB&J Project No.R1005160 April 30,2010 . <br /> Log No. 10-700-02 <br /> TABLE 1: List of Constituents of Concern and Exposure Limits <br /> Exposure Limit'(ppm)3 <br /> NIOSH OSHA <br /> Characteristics/Health& <br /> COCsl REL ST C PEL ST C IPZ(eV) IDLH3 Safety Comments <br /> METALS <br /> Arsenic(inorganic compounds) NP NP NP .5 m0NP NP NP mg/ Odorless compounds • <br /> Barium NP NP NP NP NP NP NP mg m3 <br /> Cadmium dust(and compounds) NP NP NP 0.0005 NP NP NP m 9 3 CA;blue-tinged,odorless solid <br /> Mg/MChromium(total) 0.5 3 NP NP 0.5 3 NP NP NP 25 Characteristics depend on <br /> mg/m mg/m mg/m, specific chromium compound <br /> Lead(compounds) 0.05 mg/m3 NP NP 0.05 mg/m3 NP NP NP 100 mg/m3 Heavy,ductile,soft,gray solid <br /> Mercury(vapor) 0.053 NP 0.1 3 NP NP 0.1 3 NP 10 3 <br /> mg/m mg/m mg/m mg/m <br /> Selenium .2 m0 3 NP NP m0.2 3 NP NP NP mg/m3 Combustible solid <br /> Silver 0.013 NP NP 0.013 NP NP NP 10 Flammable in form of dust or • <br /> mg/m mg/m mg/m' powder <br /> HERBICIDES <br /> 2,40(2,4-Dichlorophenoxyacetic acid) 10 3 NP NP 10 NP NP NP 100 3 Odorless powder <br /> mg/m mg/m3 mg/m <br /> 2,4,5-Trichlorophenoxyacetic acid m1g0 NP NP mg m3 NP NP NP 250 3 Odorless crystalline solid <br /> Chlordane 0.5 3 NP NP 0.5 3 NP NP NP 100 3 CA;Amber colored liquid with <br /> mg/m mg/m mg/m pungent,chlorine-like odor <br /> Notes and Acronyms are at the end of the table. Page 4 of 8 <br />