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r <br /> 1 <br /> 10.0 PERMISSIBLE EXPOSURE LIMITS FOR CHEMICAL CONTAMINANTS <br /> Chemical Name Molecular Vapor Ionization OSHA Cal-OSHA NIOSH ACGIH <br /> (CAS#) Weight' Pressure Potential PEL PEL REL TLV <br /> (mm-Hg)' (eV)' (PPmv)' (PPmv) (Ppmv)r (Ppmv) <br /> Benzene* TWA Ippm 0.0004 TWA 0.1ppm TWA 0.5ppm <br /> (71-43-2) 78.1 75 9.24 STEL 5ppm 0.0015ppm STEL Ippm STEL 2.5ppm <br /> Toluene <br /> (08-88-3) 92.1 21 8.82 TWA <br /> 300ppmm 0.19ppm TWA 100STEL 150ppm TWA 20ppm <br /> i <br /> A 100pipm TWA 100ppm <br /> ((1100-41-4)e 104.2 5 8.40 CZQ�Pmm TWA 100ppm �L 125ppm STEL 125ppm <br /> ' o-Xylene TWA 100ppm TWA 100ppm <br /> (9547-6) 106.2 7 8.56 TWA 100ppm TWA 100ppm STEL 150ppm STEL I50ppm <br /> m-Xylene 106.2 9 8.56 TWA 100ppm TWA 100ppm TWA 100ppm TWA 100ppm <br /> (108-38-3) STEL 150ppm STEL 150ppm <br /> p-Xylene 106.2 9 8.44 TWA 100ppm TWA 100ppm TWA 100ppm TWA 100ppm <br /> (106-42-3) STEL 150ppm STEL 150ppm <br /> GasolineSIO 38-300 --- ___ 500ppm TWA 300ppm TWA 300ppm <br /> (8006-61-9) (15-minutes) STEL 500ppm STEL 500ppm <br /> Diesel TWA 15ppm <br /> (Not Applicable) -- --- --- — -- (vapor) <br /> ' <br /> Waste Oil TWA5 <br /> --- _- --- --- mg/m3 <br /> (Not Applicable) -_ -- (fumes) <br /> ' Lead* 2072 0 _- TWA 0.05 TWA 50 TWA 0.05 TWA 0.05 <br /> (7439-92-1) mg/m3 pg/m3 mg/m3 mg/m3 <br /> ' 1)Source: National Institute for Occupational Safety and Health(NIOSH),2004."NIOSH Pocket Guide to Chemical Hazards",February 2004. <br /> PEL=permissible exposure limit REL=recommended exposure limit TLV=threshold limit value <br /> C=ceiling concentration TWA=time-weighted average STEL=short-term exposure limit <br /> ^NIOSH recommendation is to"minimize workplace exposure concentrations'(see Appendix A of the NIOSH Pocket Guide to Chemical <br /> Hazards). <br /> ' * Asterisk indicates that the chemical is known to the State of California to cause cancer per the <br /> Proposition 65 list of chemicals and the Safe Drinking Water and Toxic Enforcement Act of 1986 <br /> (revised December 2,200 5) <br /> Atmospheric vapor concentrations will be monitored via a photo-ionization detector (PID) with lamp energy <br /> appropriate for the contaminants of interest or equivalent to determine appropriate action levels. The PID will be <br /> calibrated daily by AEI personnel prior to use. Calibration will be performed in accordance with the manufacturer <br /> ' AEI Health&Safety,Injury&Illness Prevention Plan <br /> March 15,2012 <br />