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II <br /> i _ <br /> EXPOSURE LIMIT <br /> COMPOUND PEL EL ED CL TWA STEL IDLH OTHER <br /> m /k 3) (mg/k,93) m Ik 3 ` m /k '3 m lk 3 m lk 3 <br /> I Benzene 1 NKV NKV NKV 10 5 NKV Skin , <br /> Car <br /> Toluene 100 200 10 min . 300 100 150 2000 Skin <br /> per 8 hrs. <br /> Ethylbenzen 100 NKV NKV NKV 300 500 NKV --- <br /> e <br /> Xylenes 100 200 30 min . 300 100 150 1000 <br /> per 8 hrs. <br /> Gasoline 300 NKV NKV NKV 300 500 NKV <br /> PEL Permissible Exposure Limit <br /> EL Excursion Limit <br /> ED Excursion Duration <br /> CL Ceiling Limit <br /> TWA Time-Weighted Average <br /> STEL Short-Term Exposure Limit <br /> IDLH Immediately Dangerous to Life and Safety <br /> j ! [car] substance identified as a suspected or confirmed carcinogen <br /> [skin] substance may be absorbed into the bloodstream through the skin , <br /> mucous membrane or eyes <br /> Contact with hydrocarbon-based fuels may result in dermal irritation due to <br /> I desiccation . Respiration of or air laden with hydrocarbon vapor may result in <br /> oxygen deficiency , central nervous system depression or irritation of the mucous <br /> membranes . Mixtures of air and hydrocarbon fuels can present an explosion <br /> hazard . Waste oil may contain benzene, a suspected human carcinogen . <br /> Tetraethyl lead and ethylene dibromide gasoline additives may be present in <br /> waste oils . Both are neurotoxic. <br /> Environeering, Inc. Project No. 98-012.02 4 <br />