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y r 3 V r <br /> D <br /> j Table 1 <br /> w <br /> Hazard Exposure Guideline # <br /> r <br /> Substances Cal, OSHA 1988-89 ACGTH <br /> i' PEL TLV <br /> 5 <br /> E Berm`<me 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 /> 150 ppm (STEL) <br /> Gasoline <br /> 300 ppm (TWA) 300 ppm (TWA) <br /> 500 prAn (STEL) <br /> Passible contaminants that could be encountered as <br /> presently known. <br /> t <br /> J. <br /> 2 <br /> 1 <br /> rx : <br /> I <br /> 1 i <br /> ! J. <br />