Standard Interpretations
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OSHA requirements are set by statute, standards, and regulations. Our interpretation letters explain these requirements and how they apply to particular circumstances, but they cannot create additional employer obligations. Each letter constitutes OSHA's interpretation of the requirements discussed. Note that our enforcement guidance may be affected by changes to OSHA rules. Also, from time to time we update our guidance in response to new information.
- 1910.1028 - 8-hour total weight average (TWA) permissible exposure limit (PEL). - 10/06/1995
- 1910.1028 - Application of PEL for benzene to extended workshifts - 03/22/1988
- 1910.1028 - Clarification on respirator use relating to the benzene standard. - 04/06/1989
- 1910.1028 - Medical Surveillance requirements of the Benzene Standard. - 03/14/1988
- 1910.1028 - Monitoring employee exposures to airborne benzene. - 11/13/1989
- 1910.1028 - OSHA's final standard for occupational exposure to benzene. - 08/16/1988
- 1910.1028 - Pulmonary function testing training requirements and spirometer transmission of disease. - 06/17/1993
- 1910.1028 - Respirator selection requirements prescribed in the OSHA standard on benzene exposure. - 01/10/1994
- 1910.1028 - Respiratory Protection Tables - 12/18/1989
- 1910.1028(a)(2)(i) - Benzene Standard - Clarification of scope as pertains to Gasoline operations. - 12/26/1989
- 1910.1028(a)(2)(vi) - Exemption under the benzene standard for oil and gas drilling operations. - 01/17/2002
- 1910.1028(i) - Interpretation of Blood Test Parameters Under the Benzene Standard - 07/20/1989