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November 14, 1991 �� <br /> Beacon Station No. 492, Manteca, California <br /> TABLE 1 <br /> EXPOSURE LIMITS OF ANTICIPATED CHEMICAL CONTAMINANTS <br /> Beacon Service Station No. 492 <br /> 470 North Main Street <br /> Manteca, California <br /> (page 2 of 2) <br /> Contaminant PEL EL ED CL TWA STEL <br /> PEL - permissible exposure limit: 8 hour, time-weighted <br /> average, California Occupational Safety and Health <br /> Administration Standard (CAL-OSHA) <br /> EL - excursion limit: maximum concentration of an <br /> airborne contaminant to which an employee may be <br /> exposed without regard to duration provided the <br /> 8 hour time-weighted average for PEL is not <br /> exceeded (CAL-OSHA) <br /> ED - excursion duration: maximum time period permitted <br /> for an exposure above the excursion limit but not <br /> exceeding the ceiling limit (CAL-OSHA) <br /> CL - ceiling limit: maximum concentration of airborne <br /> contaminant which employees may be exposed <br /> permitted (CAL-OSHA) <br /> TWA - time-weighted average: 8 hour, [ (same as threshold <br /> limit value (TLV) ] , American Conference of <br /> Governmental Industrial Hygienists (ACGIH) <br /> STEL short-term exposure limit: 15 minute time-weighted <br /> average (ACGIH) <br /> # - milligrams of substance per cubic meter of air <br /> (mg/m3 ) <br /> * - parts of gas or vapor per million parts air <br /> [carc] - substance identified as a suspected or confirmed <br /> carcinogen <br /> [skin] - substance may be absorbed into the bloodstream <br /> through the skin, mucous membranes, or eyes <br /> 1 - Federal OSHA benzene limits given for PEL and STEL; <br /> STEL has a 50 minute duration limit <br /> 2 - Federal OSHA gasoline limit given for PEL; STEL is <br /> the same for FED-OSHA and ACGIH <br /> 86102-7s 4 <br />