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toluene, ethylbenzene, and xylene through vapors. Monitoring procedures for vapors will <br /> include monitoring for VOCs using a PID and LEL. <br /> The potential effects of any exposure is dependent on several factors such as toxicity, <br /> time frame of exposure, concentration, general health and age of person exposed, and individual <br /> use of hazard reduction techniques. <br /> 3.3.1.1 Benzene <br /> Benzene can enter the body through inhalation, ingestion, or skin contact. Studies have <br /> noted that chronic exposure to benzene can produce neurotoxic and hemopoietic (blood system) <br /> effects. Other effects include headache, dizziness, nausea, convulsions, coma, and possible death <br /> if exposure is not reversed. The most significant chronic effect of benzene is bone marrow <br /> toxicity. Although the cause-effect relationship is not fully understood, it is believed that there <br /> may be a strong association between chronic exposures to benzene and the development of <br /> leukemia/cancer. <br /> 3.3.1.2 Toluene <br /> Inhalation exposure to toluene vapor can produce effects such as central nervous system <br /> depression. Depending on exposure factors, signs and symptoms can include headache, <br /> dizziness, fatigue, muscular weakness, and lack of coordination, drowsiness, collapse, and <br /> possible coma. Studies have noted anemia could be a possible effect of chronic exposure to <br /> toluene. Toluene can be a skin and mucous membrane irritant and has been shown to cause liver <br /> and kidney damage when overexposure is significant. <br /> 9 <br />