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Table 4 lists the PEL's for the hazardous substances which may be encountered during this <br /> + project, based on California regulations <br /> TABLE 4 <br /> PRIMARY CAL/OSHA PATHWAY PRIMARY SYMPTOMS <br /> COMPOUND (1) <br /> PPM <br /> Ethylbenzene 100 TWA Inhalation Irritation of eyes and mucus <br /> 125 STEL(3) Ingestion membranes <br /> Headache, dermatitis, narcosis, <br /> coma <br /> SECONDARY <br /> ' Benzene 1 TWA Inhalation Irritation of eyes, nose, respiratory <br /> 5 STEL Ingestion system <br /> Absorption Giddy, nausea, staggered gait <br /> ' Contact Abdominal pain <br /> Toluene 100 TWA Inhalation Fatigue, weakness, confusion, <br /> 150 STEL Ingestion euphoria <br /> 500 CELL (4) Absorption Dizziness, dilated pupils, insomnia <br /> Contact <br /> Notes <br /> (2) TWA= 8 hour time weighted average <br /> (3) STEL= Short term exposure limit - The TWA concentration which <br /> workers should not be exposed for longer than 15 minutes, and which should <br /> not be repeated more than four times per day, with at least 60 minutes <br /> between successive exposures <br /> (4) CEIL = Ceiling - The concentration in the air that should not be <br /> exceeded during the exposure <br /> i <br /> i <br /> � I <br /> CA95DE-029 <br /> American Geological Services, Inc <br /> S <br /> 1 <br />