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Regulations (Standards - 29 CFR) - Table of Contents
• Part Number: 1910
• Part Title: Occupational Safety and Health Standards
• Subpart: Z
• Subpart Title: Toxic and Hazardous Substances
• Standard Number: 1910.1000 TABLE Z-2
• Title: TABLE Z-2
• GPO Source: e-CFR


TABLE Z-2

Substance 8-hour time weighted average Acceptable ceiling concentration Acceptable maximum peak above the acceptable ceiling concentration for an 8-hr shift
Concentration Maximum duration
Benzene(a) (Z37.40-1969) 10 ppm 25 ppm 50 ppm 10 minutes.
Beryllium and beryllium compounds (Z37.29-1970) 2 ug/m(3) 5 ug/m(3) 25 ug/m(3) 30 minutes.
Cadmium fume(b) (Z37.5-1970) 0.1 mg/m(3) 0.3 mg/m(3) .........  
Cadmium dust(b) (Z37.5-1970) 0.2 mg/m(3) 0.6 mg/m(3)    
Carbon disulfide (Z37.3-1968) 20 ppm 30 ppm 100 ppm 30 minutes.
Carbon tetrachloride (Z37.17-1967) 10 ppm 25 ppm 200 ppm 5 min. in any 3 hrs.
Chromic acid and chromates (Z37-7-1971)(c) .......... 1 mg/10 m(3)    
Ethylene dibromide (Z37.31-1970) 20 ppm 30 ppm 50 ppm 5 minutes.
Ethylene dichloride (Z37.21-1969) 50 ppm 100 ppm 200 ppm 5 min. in any 3 hrs.
Fluoride as dust (Z37.28-1969) 2.5 mg/m(3) ........... .........  
Formaldehyde: see 1910.1048 ........... ........... .........  
Hydrogen fluoride (Z37.28-1969) 3 ppm .......... .........  
Hydrogen sulfide (Z37.2-1966) .......... 20 ppm 50 ppm 10 mins. once only if no other meas. exp. occurs.
Mercury (Z37.8-1971) .......... 1 mg/10m(3) ........  
Methyl chloride (Z37.18-1969) 100 ppm 200 ppm 300 ppm 5 mins. in any 3 hrs.
Methylene Chloride: see 1910.1052        
Organo (alkyl) mercury (Z37.30-1969) 0.01mg/m(3) 0.04 mg/m(3) .........  
Styrene (Z37.15-1969) 100 ppm 200 ppm 600 ppm 5 mins. in any 3 hrs.
Tetrachloroethylene 100 ppm 200 ppm 300 ppm 5 mins. in any 3 hrs.
Toluene (Z37.12-1967) 200 ppm 300 ppm 500 ppm 10 minutes
Trichloroethylene (Z37.19-1967) 100 ppm 200 ppm 300 ppm 5 mins. in any 2 hrs.
Footnote(a) This standard applies to the industry segments exempt from the 1 ppm 8-hour TWA and 5 ppm STEL of the benzene standard at 1910.1028.
Footnote(b) This standard applies to any operations or sectors for which the Cadmium standard, 1910.1027, is stayed or otherwise not in effect.
Footnote(c) Footnote(c) This standard applies to any operations or sectors for which the exposures limit in the Chromium (VI) standard, Sec. 1910.1026, is stayed or is otherwise not in effect.
[62 FR 42018, August 4, 1997] as amended [71 FR 36009, June 23, 2006]

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Regulations (Standards - 29 CFR) - Table of Contents

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