Skip to Main Content


This information is provided free of charge by the Department of Industrial Relations from its web site at www.dir.ca.gov. These regulations are for the convenience of the user and no representation or warranty is made that the information is current or accurate. See full disclaimer at https://www.dir.ca.gov/od_pub/disclaimer.html.
 

Subchapter 7. General Industry Safety Orders
Group 15. Occupational Noise
Article 105. Control of Noise Exposure

Return to index
New query

Appendix C

Audiometric Test Rooms

Rooms used for audiometric testing shall not have background sound pressure levels exceeding those in Table C-1 when measured by equipment conforming at least to the Type 2 requirements of ANSI S1.4-1971 (R1976), and to the Class II requirements of ANSI S1.11-1971 (R1976).


                           Table C-1

Maximum Allowable Octave-Band Sound Pressure Levels for
                Audiometric Test Rooms

Octave-band center
frequency (Hz)...............  500   1000    2000     4000    8000
Sound pressure level (dB)..... 40      40      47       57      62

NOTE: Authority and reference cited: Section 142.3, Labor Code.

HISTORY

1. Amendment filed 10-3-83; effective thirtieth day thereafter (Register 83, No. 41).

Go BackGo Back to Article 105 Table of Contents