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a4 <br /> • General Safety Hazards <br /> Below, each of the foregoing hazards are discussed. Even though the concentrations of <br /> petroleum hydrocarbons, including benzene, toluene, ethylbenzene and xylenes are <br /> expected to be low, EI personnel will plan for their presence in the working environment <br /> during all phases of work on this site. <br /> i <br /> 4.1 Chemical Hazards <br /> Toxic substances can enter the body through inhalation, ingestion or skin absorption. <br /> They can enter by more than one route, cause damage at the point of entry and cause <br /> organ damage after being metabolized. The most likely toxic substances to be <br /> encountered at the R & L site are used oil, diesel and gasoline. These are all <br /> hydrocarbons and as such present flammability hazards. In addition, contaminants <br /> and/or components present additional hazards. The following table lists gasoline and <br /> gasoline components and their respective permissible exposure levels (PEL). <br /> Exposures at R & L for the projected work are not expected to exceed the PELs. i <br /> �ag� � � Xf35Ulf #IIIT $i , <br /> aP1= <br /> CtJNIR ?UNE3 a Lg , <br /> ,S^ ��i . N <br /> jlfi4ltf . s�� / ,. ``. <br /> tl� /k k fk 3.. k 3 Ik 3 <br /> Benzene 1 NKV NKV NKV 10 5 NKV skin, <br /> Car i <br /> Toluene 100 200 10 min. 300 100 150 2000 skin <br /> per 8 hrs. <br /> Eth (benzene 100 NKV NKV NKV 300 500 NKV --- <br /> Xylenes 100 200 30 min. 300 100 150 1000 --- <br /> er 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 /> Environeering, Inc. Project No. 05-001 3 <br />