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The most significant risk associated with petroleum fuels is <br /> X-"N exposure to aromatic compounds . Skin contact will be eliminated <br /> F== by use of clothing, eye wear, and gloves and the Inhalation <br /> m� hazard will be minimized using appropriate respiratory protective <br /> devices as determined by on-site air monitoring. The safety <br /> Coordinator/Project Manager will establish an exclusion zone <br /> encompassing a 50 goat radius from the work area. Access within <br /> this zone will be Limited to required personnel . Total organic <br /> vapors will be monitored within the exclusion zone using a <br /> photoLonization detector (PLD) calibrated for benzene the most <br /> toxic of the aromatic hydrocarbons. Current enforceable and <br /> recommended exposure limitations for potential ential site contaminants <br /> A <br /> ,,.. <br /> are presented In Table 1. Also presented in Appendix I is <br /> additional hazard information on these compounds. <br /> Table Z <br /> Hazard Exposure Guidelines <br /> 1988-89 ACGIH <br /> - Substances Cal OSHA TLV <br /> PEL <br /> "r ----------------------4--------------w ----------------mow--- '. <br /> j Benzenes 10 ppm (TWA) 10 ppm (TWA) <br /> 25 ppm (EXC) 25 ppm (STEL) <br /> 50 ppm (Ceiling) <br /> Toluene 100 ppm (TWA) 100 ppm (TWA) <br /> 300 ppm (Ceiling) 150 ppm (STEL) <br /> Xylene 100 ppm (TWA) 100 ppm (TWA) <br /> 1 150 ppm (STEL) <br /> � Gasoline 300 ppm (TWA) 300 ppm (TWA) <br /> 500 ppm (STEL) <br /> Y Possible contaminants that could be encountered as <br /> presently known. <br /> q <br /> a <br /> '.1 Yt— <br />