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|Title: 05/19/2009 - Application of OSHA PEL for nitric oxide as 8-hr TWA to pregnant employees.|
|Record Type: Interpretation||Standard Number: 1910.1000, 1910.1200, 1910.1200(e), 1910.1200(f), 1910.1200(g), 1910.1200(h)|
|This letter constitutes OSHA's interpretation only of the requirements discussed and may not be applicable to any situation not delineated within the original correspondence.|
May 19, 2009
Gerald S. Zavorsky, Ph.D.
Dear Dr. Zavorsky:
Thank you for your February 19, 2009, letter, to the Occupational Health and Safety Administration (OSHA). Your letter has been referred to the Directorate of Enforcement Programs for an answer to your question regarding the permissible exposure limit (PEL) for nitric oxide (NO). This letter constitutes OSHA's interpretation only of the requirements discussed and may not be applicable to any question not detailed within your original correspondence.
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Question: Does the OSHA PEL for nitric oxide, which is 25 parts per million (ppm) as an 8-hour time-weighted average (TWA), apply to pregnant women? If not, what is the OSHA PEL for pregnant women exposed to nitric oxide?
Richard E. Fairfax, Director
Directorate of Enforcement Programs