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16. Exposure to extremely high noise
levels may cause permanent hearing
loss. Individuals vary considerably in
susceptibility to noise-induced hearing
loss, but nearly everyone will lose
some hearing if exposed to sufficiently
intense noise for a period of time.
The U.S. Government's Occupational
Safety and Health Administration
(OSHA) has specified the permissible
noise level exposures shown in the
chart. According to OSHA, any
exposure in excess of these permissible
limits could result in some hearing loss:
Duration,
per day in hours
8
6
4
3
2
1.5
1
0.5
0.25 or less
Sound
Level
90 dB
92 dB
95 dB
97 dB
100 dB
102 dB
105 dB
110 dB
115 dB
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