Twenty-five states, Puerto Rico and the Virgin Islands have OSHA-approved State Plans and have adopted their own standards and enforcement policies. For the most part, these states adopt standards that are identical to Federal OSHA. However, some states have adopted different standards applicable to this topic or may have different enforcement policies.
This section highlights OSHA standards, directives (instructions for compliance officers), standard interpretations (official letters of interpretation of the standards), and recommended exposure limits related to mercury.
General Industry (29 CFR 1910)
Shipyard Employment (29 CFR 1915)
Construction Industry (29 CFR 1926)
Includes exposure limit information from OSHA, the National Institute for Occupational Safety and Health (NIOSH), and the American Conference of Industrial Hygienists (ACGIH).
|Mercury, Alkyl Compounds||Mercury, Aryl Compounds||Mercury, Inorganic Compounds|
|8-Hour TWA||0.01 mg/m3||0.1 mg/m3||0.1 mg/m3|
|8-Hour TWA||0.01 mg/m3, Skin||0.05 mg/m3, Skin||0.05 mg/m3, Skin|
|ST/Ceiling||0.03 mg/m3, (ST) Skin||0.1 mg/m3, (Ceiling) Skin||0.1 mg/m3, (Ceiling) Skin|
|IDLH||2 mg/m3||10 mg/m3||10 mg/m3|
|8-Hour TWA||0.01 mg/m3, Skin||0.1 mg/m3, Skin||0.025 mg/m3, Skin|
|Short Term||0.03 mg/m3, Skin||-||-|
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