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15 <br /> Site Safety Plan October 15, 1990 <br /> ARCO Station No. 6020, Manteca, California AGS 30055-25 <br /> rr- TABLE 1 <br /> EXPOSURE LIMITS OF ANTICIPATED CHEMICAL CONTA14INANTS <br /> ARCO Service Station No. 6020 <br /> 1711 E. Yosemite Avenue <br /> Manteca, California <br /> (page 2 of 2) <br /> Contaminant FEL EL £D 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/m ) <br /> - parts of gas or vapor per million parts air <br /> [care] - substance identified as a suspected or confirmed <br /> ka 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 sante for FED-OSHA and ACGIH <br /> AVpl ed GeOSystefl'S — <br />