Standard Interpretations
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.
- 1910.1052 - 8-hour total weight average (TWA) permissible exposure limit (PEL). - 10/06/1995
- 1910.1052 - Amendments to methylene chloride standard - 11/20/1998
- 1910.1052 - OSHA's Methylene Chloride Standard - 07/03/1997
- 1910.1052 - OSHA's Methylene Chloride Standard - 06/27/1997
- 1910.1052 - OSHA's Methylene Chloride Standard - 06/05/1997
- 1910.1052 - Partial Stay of Methylene Chloride Standard - 02/06/1998
- 1910.1052 - Petition for modification of OSHA's Methylene Chloride Standard - 07/07/1997
- 1910.1052(d)(1)(ii) - "Representative sampling" provisions of the Methylene Chloride standard. - 10/13/1998
- 1910.1052(g) - Misprint in 1998 Edition of CFR: Methylene Chloride Standard. - 12/22/1998
- 1910.1052(k) - Determination of airborne concentrations of methylene chloride; protection of employees covered by 1910.1052 - 05/12/2003