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100 W <br /> - IWI <br /> The most significant risk associated with petroleum fuels is <br /> eliminated <br /> exposure to aromatic compounds. Skin contact <br /> a dl heeinhalation <br /> by use of clothing, eye wear, and gloves <br /> hazard will be minimized using appropriate respiratory protective <br /> devices as determined by on-site air monitoring using <br /> photoionixation detector (PIP) calibrCoordinator/Project molecule <br /> Manager <br /> with isobutylene gas The Safety <br /> will establish an exclusion zone encompassing a conservative 50 <br /> foot radius from the work area. Limits of the exclusion canes may <br /> be modified based on field measurements taken during the course <br /> of investigative activities. Access within this zone will be <br /> limited to required personnel. <br /> for <br /> Current enforceable and recommended exposure <br /> limitations <br /> imitTabltionsI. Also <br /> potential site contaminants are presented <br /> presented in Appendix I is additional hazard information on these <br /> compounds. <br /> Table 1 <br /> Hazard Exposure Guidelines <br /> * <br /> Substances Cal OSHA 1989-90 ACGIH <br /> PBL TLV <br /> ------------------------------------------------------------ <br /> Benzene <br /> 10 ppm (TWA) 10 ppm (TWA) <br /> 25 ppm (Ceiling) <br /> 100 Ppm (TWA) 100 ppm (TWA) <br /> Toluene 150 ppm (STEL) 150 ppm (STEL) <br /> 1.00 ppm (TWA) 100 ppm (TWA) <br /> Ethylbenzene <br /> r 125 ppm (STEL) 125 ppm (STEL) <br /> 100 ppm (TWA) 100 ppm (TWA) <br /> Xylene 150 ppm (STEL) 150 ppm (STEL) <br /> 300ppm (TWA) 300 ppm (TWA) <br /> Gasoline 500 ppm (STEL) <br /> 500 ppm (STEL) <br /> * Passible contaminants that could be encountered as <br /> presently known. <br />