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Table 1 <br /> Hazard Exposure Guidelines ' <br /> SUBSTANCES _ — _ _ CAL OSHA. 1988- 89 ACGIH <br /> __ PEL , TLV _ <br /> .____.._.._- ._._ -- _ --'--_—__.._....___— <br /> BenzeneI 10 00mIW�----- — 10 PP_jrn .(=,, <br /> I <br /> ----25 P_P m ffX 25 Ppm (STEL.. <br /> 50 PPM. Ceilinno <br /> Toluene _ _. _— __.._._...._ _ 100 P_P_�'_Cl _A)__ 100 ppm (Tw .6L __-- <br /> � - 300 ppm Ceilin5^ 0 ppm�(STEL� <br /> ..__._._...___________.._.p._ I'll poll _._.____._.__ <br /> Xvlene100 PPM CIW:� <br /> . 1Q�p M � � __ —_ <br /> .....__....__._� ------•--•�---�____._._._...._.._....— 150 ppm �STELZ–: <br /> Gasoiine 300 L'Prn �'I WA�-- 300 Ppm (TWAT_..._..__.._. <br /> __..._... _...___ � S00m STEL _ <br /> _pP_.�.._._._. L) <br /> NA) <br /> bromide 20_Ppm NA <br /> _......_,....____. _ _ _._ <br /> Etheldi045 ppm <br /> TW� <br /> I <br /> 30 ppm Ceilin _--_: 13 PLtn_(STELj ._.__.._..__. <br /> 50 ppm (5 min mix eak LL <br /> Tetraethvl Lead i . 075 mg./ m3 . 075 m / m3 <br /> •.11 Of the above are compounds that may be encountcred during escavodou. Common sense dictates when levels are sucb tbnt extra <br /> prutrcriou is uccessarv. <br />