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Table 2 Amount of permissible noise exposure allowed in theworkplace*

From: Impact of noise on hearing in the military

Duration per day (hour) Sound level (dBA)
8 90
6 92
4 95
3 97
2 100
1 ½ 102
1 105
½ 110
¼ or less 115
  1. *Adapted from OSHA 2014. Standards. US Dept Labor: Occupational Noise Exposure [Online]. vailable by Occupational Safety and Health Administration. https://www.osha.gov/SLTC/noisehearingconservation/index.html.