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Task(s) Chemical PEL/STEL/IDLH Known Signs/Symptoms <br /> (soil, water, air,etc.) Concentration <br /> 1 Benzene PEL 1 ppm Irritantto eyes, nose, <br /> currently - 0.1 lungs and skin; <br /> ppm future headaches, bronchitis, <br /> STEL 5 ppm fatigue, pneumonia, <br /> IDLH2,000 ppm human carcinogen. <br /> 1 Toluene PEL 100 ppm Irritantto eyes, skin, <br /> STEL 150 ppm digestive and respiratory <br /> IDLH2,000 ppm track; central nervous <br /> system depression, <br /> headache, dizziness, <br /> fatigue, nausea. <br /> 1 Ethylbenzene PEL 100 ppm Irritantto eyes, mucous <br /> STEL 125 ppm membranes; headache, <br /> IDLH2,000 ppm skin rash, narcosis. <br /> 1 Xylenes PEL 100 ppm Irritantto skin, eyes, <br /> STEL 150 ppm nose, and throat; <br /> IDLH 10,000 ppm nausea, drowsiness, <br /> dizziness, vomiting. <br /> 1 TPHG PEL 300 ppm Irritantto eyes and <br /> lungs, causes cough, <br /> conjunctive irritation, <br /> hallucinations, <br /> dermatitis, blistering, <br /> central nervous system <br /> depression. <br /> 1 TPHD None Established Skin and respiratory <br /> irritation;dizziness, <br /> nausea. <br /> 1 Lead STEL 01 mg/m 3 <br /> 1 Tetraethyl Lead PEL 0.75 mg/m 3 <br /> STEL 0.3 mg/m 3 <br /> IDLH40 mg/m 3 <br /> 1 Tetramethyl PEL 0.07 mg/m 3 <br /> Lead STEL 0.5 mY/m 3 <br /> IDLH40 nigh E <br /> PAGE 2 <br />