23
Appendix B: Canada Regulations - Occupational
Health and Safety Regulations, Occupational
Exposure Limits
Table 1A
Noise Exposure Limits when Criterion Level = 90 dB(A)
3 dB(A)
Exchange Rate
Maximum Permitted
Daily Duration (hours)
5 dB(A)
Exchange Rate
Allowable Level dB(A)
Allowable Level dB(A)
90
8
90
93
4
95
96
2
100
99
1
105
102
0.5
110
105
0.25
115
Table 1B
Noise Exposure Limits when Criterion Level = 85 dB(A)
3 dB(A)
Exchange Rate
Maximum Permitted
Daily Duration (hours)
5 dB(A)
Exchange Rate
Allowable Level dB(A)
Allowable Level dB(A)
85
8
85
88
4
90
91
2
95
94
1
100
97
0.5
105
100
0.25
110
continued...
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