SONIC SAFETY SERVICES experienced
staff will certify sound booths or custom rooms used for audiometric
testing in accordance CFR 29 1910.95 Appendix D: "Audiometric Test
The regulations require that the test room or booth be certified
when ever it is moved, modified, repaired, or there is a change or
possible change to the noise level in the surrounding area. Sonic
recommends, due to general usage & aging, that test booths or rooms
be recertified at least every three years.