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0 0 <br />1 ppmv benzene. This level is one tenth of the current occupational <br />Permissible Exposure Limit (PEL) for an 8 hour exposure to benzene. <br />Action Levels of Hydrocarbon Components in Petroleum Fuel: <br />Gasoline >300ppm PEL LEL > 10% <br />Benzene > 1ppm PEL Oxygen <19.5% <br />Toluene >100ppm PEL <br />Xylene >100ppm PEL <br />Ethyl Benzene >100ppm PEL <br />A hydrocarbon vapor analyzer will be used to measure real time <br />breathing zone concentration for comparison with the 100 ppmv working <br />limit. When a persistent level of 100 ppmv is observed, appropriate <br />respirators will be donned and other vapor measurements will be made. <br />If hydrocarbon vapors exceed 1000 ppmv or 10 ppm benzene, work will <br />be stopped. The field crew will be instructed to stay up wind and <br />methods will be applied to subdue fugitive vapor emissions such as <br />sprinkling soil with water, or the use of copus blower. <br />The site Safety Officer will make such determinations. <br />If LEL is >10% in or around the tank, work must stop and not commence <br />until determined safe and/or LEL% <10%. <br />If oxygen levels in the immediate work area are < 19.5%, work must <br />stop until determinated safe and/or levels are >19.5%. <br />Symptoms Of Acute Overexposure: Gasoline and gasoline vapors maybe <br />irritating to the skin, eyes and respiratory tract. Gasoline vapors <br />may effect the central nervous system and may cause headaches and <br />dizziness. <br />Oxygen Deficiency: May cause dizziness. <br />SSP -5 <br />