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• 0 <br /> 1 pgmv ibenzene . <br /> le ExpThis osure Limitlis one(PEL) for an 8 houh of r exposurettocbenzene. <br /> ational <br /> Permissible p <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 pgmv is observed, appropriate <br /> respirators will be donned and other vapor measurements will be made . <br /> If hydrocarbon vapors exceed 1000 pgmv 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 LEDs <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 />