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TABLE A-1 <br /> HAZARD EXPOSURE GUIDELINES <br /> PG&E LATHROP GAS DEHYDRATOR STATION <br /> SAN JOAQUIN COUNTY, CALIFORNIA <br /> COMPOUND CAL OSHA PEL 1990-91 ACGIH TLV <br /> Benzene 1 ppm (TWA) 10 ppm (TWA) <br /> Toluene 100 ppm (TWA) 100 ppm(TWA) <br /> 150 ppm (STEL) 150 ppm (STEL) <br /> Ethylbenzene 100 ppm (TWA) 100 ppm(TWA) <br /> 125 ppm(STEL) 125 ppm(STEL) <br /> Xylenes 100 ppm (TWA) 100 ppm(TWA) <br /> 150 ppm (STEL) 150 ppm(STEL) <br /> Gasoline 300 ppm (TWA) 300 ppm (TWA) <br /> 500 ppm (STEL) 500 ppm(STEL) <br /> Diesel None None <br /> Triethylene Glycol None None <br /> NOTES: 1.Table includes possible contaminants which may be encountered based on available <br /> information. <br /> 2. CAL OSHA= California Occupational Safety and Health Administration. <br /> ACGIH = American Conference of Governmental Industrial Hygienists. <br /> PEL = Permissible Exposure Limit. <br /> TLV = Threshold Limit Values. <br /> TWA = Time Weighted Average(8—hour) <br /> STEL = Short Term Exposure Limit. <br /> 3. Triethylene Glycol does not have a TWA or STEL per CAL OSHA or ACGIH. <br /> The compound is not toxic or carcinogenic and health risks due to dermal,ingestion, <br /> or inhalation exposure are considered minor see attached MSDS sheet). <br /> cca/10-7-92/8913a/JAWP13 A-3 <br />