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TABLE 1 <br /> Chemicals of Concern and Occupational Characteristics (1) <br /> Chemical CalOSHA PEL 8- ACGIH TLV 8-hourTWA(4) IDLH(5) Comments <br /> hour TiNi <br /> STEL(3) <br /> Carbon Dioxide 5000 ppm; 5000 ppm 40,000 ppm Major Constituent of dry ice, <br /> simple asphyxiate <br /> 30,000 ppm <br /> Dust(Particulate Not 5 mg/m3 respirable; 3 mg/m3 respirable; 10 Not Initabon <br /> Otherwise Regulated) 10 ri total mg/m3 total Established <br /> Gasoline 300 ppm [STEL= 300 ppm N/A(6) Carcinogen;flammable liquid; <br /> 500 ppm] kidney toxin;headaches; <br /> dizziness;eye,nose,and throat <br /> initant(May be present due to <br /> proximity to highway traffic) <br /> Diesel Engine Exhaust Not Established 0.05 ng/m3 N Carcinogen,irritant,odor and <br /> color vary by source(May be <br /> present due to proximity to <br /> highway traffic) <br /> Benzene 1 ppm[STEL=5 0.5 ppm 500 ppm Carcinogen;Flammable liquid <br /> ppm] with aromatic odor(may be a <br /> trace gas in landfill gases) <br /> Toluene 50 ppm[STEL= 50 ppm 500 ppm Flammable liquid with benzene <br /> 150 ppm] odor,liver and kidney toxin;skin <br /> irritant dermatitis;demtal <br /> absorption;skin IS) <br /> Notes: <br /> 1. Source.,National Institute for Occupational Safety and Health(NIOSH),Guide to Chemical Hazards, 1990. Ppm=pads per <br /> million. mgi=milligrams per cubic meter. <br /> 2. CaIOSHA PEL=8 CCR 5155 General Industry Standards for Toxic and Hazardous Substances,Permissible Exposure <br /> Limit.8-hour time weighted average(TWA) <br /> 3. STEL=Short-term Exposure Limit. <br /> 4. ACGIH TLV=American Conference of Governmental Industrial Hygienists, Threshold Limit Value. <br /> 5. IDLH=Immediately dangerous to life and health. <br /> 6. N/A=not applicable <br /> 7. Skin=The designation'skin"refers to potential significant contribution to the overall exposure by skin contact with vapors <br /> or with the substance. <br /> CNCD:;S MILWPOZ-0068.4 1 of 1 <br />