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Table 1 <br /> Hazard Exposure Guidelines* <br /> I <br /> SLBST_3NCES CAL OSHA 1988-89 ACGIH <br /> PEL T V <br /> Benzene 10 ppm 10 pom A) <br /> 25 pom XC) 23 purn STEL <br /> 30 c liagL <br /> I <br /> Toluene 100 ppm _) 100 ppm <br /> 300 pom Ceding` 1 130 ppm STEL <br /> Xvlene 100 pom CTWA) 100 ppm _k <br /> 130 pom (STEL) <br /> Gasoline 300 pprn A 300 ppm <br /> 300 ppm (STEL) <br /> Etheldibromide 20 ppm -A .043 ppm �) <br /> 30 ppm Ceiling` .13 ppm (STEL) <br /> 30 pom !3 min. max peak) <br /> Tep:aechvi Lead .073 mg/m3 .073 ^nz/m3 <br /> •.�of:he above are compounds chat may be encountered doming excavadon. Common sense dicaces ahea levels are such tha e.X= <br /> pmcecaou is necmacv. <br />