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LEA Advisory #46 - Evaluation of Employee Health Risk from Open Tire Burning Page 6 of 8 <br /> OSHA PEL NIOSH REL ACGIH TLV <br /> TWA STEL/CEIL TWA STEUCEIL TWA STEUCEIL <br /> Coal Tar Pitch <br /> 0.2 mg/m3 - 0.1 mg/m3 * - 0.2 mg/m', A I. - <br /> cyclohexane A 1-confirmed human carcinogen <br /> extractable <br /> Benzene <br /> 1 ppm 5 ppm 0.1 ppm 1 ppm 10 ppm, A2 <br /> A2-suspected human <br /> carcinogen <br /> Carbon Monoxide <br /> 25 ppm C200 ppm 35 ppm C200 ppm 50 ppm 400 ppm <br /> Toluene <br /> 100 ppm 150 ppm 100 ppm 200 ppm 100 ppm 150 ppm <br /> Xylene <br /> 100 ppm 150 ppm 100 ppm 200 ppm 100 ppm 150 ppm <br /> Styrene <br /> 50 ppm 100 ppm 50 ppm 100 ppm 50 ppm 100 ppm <br /> Ethyl Benzene <br /> 100 ppm 125 ppm 100 ppm 125 ppm - - <br /> Zinc Oxide, dust <br /> 10 mg/m3 - 5 mg/m3 15 mg/m3 10 mg/m3 <br /> Lead, inorganic dust&fumes <br /> 0.5 mg/m3 - <0.1 mg/m3 0.05 mg/m3, A3 <br /> A3-animal carcinogen <br /> Arsenic, inorganic <br /> 0.01 mg/m3 - carcinogen 0.002 mg/m3 0.1 mg/m3 , Al <br /> A 1-confirmed human <br /> carcinogen <br /> http://www.ciwmb.ca.gov/pe/advisory/46/46.htm 8/11/98 <br />