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I <br /> EXPOSURE TABLE <br /> SUBSTANCE TLV-TWA TLV-STEL TLV-CEILING IDLH <br /> Benzene 01 ppm N/A N/A 3000 ppm (Ca) <br /> Toluene 100 ppm 150 ppm N/A 2000 ppm <br /> Xylene 100 ppm 150 ppm N/A 1000 ppm <br /> Ethyl benzene 100 ppm 125 ppm N/A 2000 ppm <br /> Prolonged exposures to concentrations above the limits noted may <br /> affect the Central Nervous System, Cardiovascular System, <br /> Respiratory System, eyes, skin, kidneys, bones and bone marrow. <br /> Research has shown that Benzene and some of the heavy metals are <br /> suspected or known carcinogens <br /> Immediate symptoms of over-exposure include . Eye irritation, nose <br /> and throat irritation, headache, nausea, dizziness, drowsiness, <br /> weakiness, confusion, euphoria, excitement, staggered gait, <br /> abdominal pain, respiratory difficulties, muscle fatigue, and <br /> coma. <br /> It should be noted that summertime heat may initiate weather <br /> stress-related problems and decrease productivity on the job site <br /> All WEGE personnel will monitor for heat stress and take adequate <br /> precautions against it . <br /> Symptoms of heat stress include: Heat rash, heat cramps, muscle <br /> spasms, pain in the hands and feet, heavy sweating, dizziness, <br /> nausea, fainting. <br />