Laserfiche WebLink
: All of the above are compounds that may be encountered during excavation. Common sense dictates when levels are such that extra <br />protection is necessary. <br />Table 1 <br />Hazard Exposure Guidelines <br />SUBSTANCES <br />CAL OSHA1988-89 <br />. <br />ACGIH <br />........................................................................................... <br />............................................................. <br />PELTLV <br />`....................................................................... .............. ;......................................................................... <br />. <br />Benzene10 <br />ppm (TW) <br />10 ppm (TWA) <br />.............................................................E.....................................................................................i........................ <br />25 ppm (EXC)25 <br />ppm (STEL) <br />.......................................... <br />.....................................................4. <br />50 ppm (Ceiling) <br />............................,.......................................................................... <br />........................................................_ <br />Toluene <br />..................... . <br />------ ............................................. ............................... ;........................................................ <br />100 ppm (TWA) <br />.............................. .............................i....................................................................... <br />.................. <br />100 ppm (TWA) <br />300 ppm (Ceiling) <br />150 ppm (STEL) <br />.................................................. <br />Xylene100 <br />...................................................... <br />..................................................................................... i.......................................................................... <br />ppm (TWA) <br />i..................................................................................... i.......................................................................... <br />100 ppm (TWA) <br />.............................................................. <br />........................................................i....................................................................... <br />150 ppm (STEL) <br />.................. <br />Gasoline300 <br />......................................................._.....4. <br />..................................................................................... .................................... <br />ppm (TWA) <br />... ..........1. ......................................................................... <br />............................ _........ <br />300 ppm (TWA) <br />.__................ ----.._...................--................................................_................................;............................_........................................_.. <br />500 ppm (STEL) <br />Etheldibromide20 <br />........................................................................................................................................:................ <br />ppm (TWA) <br />045 ppm (TWA) <br />................................................. <br />.............................................................. <br />30 ppm (Ceiling) <br />........................................... ........... ................................ :................................................................ <br />.13 ppm (STEL) .......... <br />.............. ............. ................................... <br />50 ppm (5 min. max peak) <br />:...................................................................................... :............... <br />.............................. ............................. <br />Tetraethyl Lead <br />.075 mg/m3 <br />.075 mg/m3 <br />: All of the above are compounds that may be encountered during excavation. Common sense dictates when levels are such that extra <br />protection is necessary. <br />