Audiometer calibration requirements of the March 8, 1983 Hearing Conservation Amendment.

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. This 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. To keep apprised of such developments, you can consult OSHA's website at https://www.osha.gov.

June 8, 1983

Carl D. Bohl, Sc.D.
Department of Medicine and
Environmental Health
Monsanto Company
300 North Lindbergh Boulevard
St. Louis, Missouri 63167

Dear Dr. Bohl:

Thank you for your letters of April 28, 1983, to Assistant Secretary Auchter, Gary Strobel, John Martonik, James Foster and myself regarding the audiometer calibration requirement of the March 8, 1983, hearing conservation amendment.

Whether use of an artificial ear ISO 318 coupler complies with the noise standard.

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. This 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. To keep apprised of such developments, you can consult OSHA's website at https://www.osha.gov.

April 23, 2010

Mr. Travis McColley
Tremetrics
7625 Golden Triangle Drive
Eden Prairie, MN 55344

Dear Mr. McColley: