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Benzene Benzene is a colorless to light-yellow liquid with an aromatic odor. Inhalation or absorption of benzene can cause imitation of the eyes, skin, nose and respiratory system. Prolonged exposure can cause giddiness, headache,nausea, staggered gait, and fatigue. The Cal-OSHA PEL for benzene is I ppm; the STEL for benzene is 5 ppm. Toluene Toluene is a colorless liquid with a sweet, pungent odor. Inhalation or absorption of toluene can cause irritation to the eyes and nose, fatigue, weakness, dizziness, headache, dermatitis, liver, and kidney damage. The Cal-OSHA PEL for toluene is 100 ppm; the STEL for toluene is 150 ppm. The ceiling limit (the maximum concentration of an airborne contaminant to which an employee may be exposed at any time) for toluene is 500 ppm. Ethylbenzene Ethylbenzene is a colorless liquid with an aromatic odor. Inhalation or absorption of ethylbenzene can cause irritation to the eyes, skin, mucous membranes, headache, dermatitis, narcosis, and coma. The Cal-OSHA PEL for ethylbenzene is 100 ppm; the STEL for etliylbcnzene is 125 ppm. Xylene Compounds Xylene compounds (ortho-, meta-, and para-xylene)are colorless liquids with aromatic odors. Inhalation or absorption of xylene compounds can cause irritation to the eyes, skin nose, throat, dizziness, drowsiness, nausea, vomiting, and dermatitis. The Cal-OSHA PEL for xylene compounds is 100 ppm; the STEL for xylene compounds is 300 ppm. 4.0 TUSK ASSESSMENT SUMMARY It is anticipated that there will be no significant or major potential source of exposures due to the scope of work to be performed on this project. An analyses of site specific hazards with respect to chemical and physical hazards are discussed below. In general, the principal routes of exposure on any site include inhalation, absorption, dermal contact, and ingestion. With respect to the scope of work to be performed, (lie potential routes of exposure include inhalation, absorption, and dermal contact. General safe work practices should adequately address the potential for exposure via absorption or dermal contact. SSP.Prgjecr No. 3 Dore