California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 7 - General Industry Safety Orders › Group 15 - Occupational Noise and Ergonomics › Article 105 - Control of Noise Exposure › Section 5096 - Exposure Limits for Noise

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
(a) Protection against the effects of noise
						exposure shall be provided when the sound levels exceed those shown in Table
						N-1 of this section when measured on the A-scale of a standard sound level
						meter at slow response.
(b) When
						employees are subjected to sound levels exceeding those listed in Table N-1 of
						this section, feasible administrative or engineering controls shall be
						utilized. If such controls fail to reduce sound levels within the levels of the
						table, personal protective equipment shall be provided and used to reduce sound
						levels within the levels of the table.
Table N-1 Permissible Noise
									 Exposure1
Permitted
									 Duration
Permitted
								  Duration
Sound Level
Per Workday (hours-
per Workday Sound Level
(hours-
(dBA)
minutes)
hours
(dBA)
minutes)
hours
90..........................
8-0..........................
..........................8.00
..........................103
..........................1-19
..........................1.32
91..........................
6-58..........................
..........................6.96
..........................104
..........................1-9
..........................1.15
92..........................
6-4..........................
..........................6.06
..........................105
..........................1-0
..........................1.00
93..........................
5-17..........................
..........................5.28
..........................106
..........................0-52
..........................0.86
94..........................
4-36..........................
..........................4.60
..........................107
..........................0-46
..........................0.76
95..........................
4-0..........................
..........................4.00
..........................108
..........................0-40
..........................0.66
96..........................
3-29..........................
..........................3.48
..........................109
..........................0-34
..........................0.56
97..........................
3-2..........................
..........................3.03
..........................110
..........................0-30
..........................0.50
98..........................
2-38..........................
..........................2.63
..........................111
..........................0-26
..........................0.43
99..........................
2-18..........................
..........................2.30
..........................112
..........................0-23
..........................0.38
100..........................
2-0..........................
..........................2.00
..........................113
..........................0-20
..........................0.33
101..........................
1-44..........................
..........................1.73
..........................114
..........................0-17
..........................0.28
102..........................
1-31..........................
..........................1.52
..........................115
..........................0-15
..........................0.25
1 When the daily noise exposure is composed of two or
						  more periods of noise exposure of different levels, their combined effect
						  should be considered, rather than the individual effect of each. If the sum of
						  the following fractions: C1/T1 +
						  C2/T2 ...
						  Cn/Tn exceeds unity, then, the
						  mixed exposure should be considered to exceed the limit value.
						  Cn indicates the total time of exposure at a specified
						  noise level, and Tn indicates the total time of exposure
						  permitted at that level.
(c)
						If the variations in noise level involve maxima at intervals of 1 second or
						less, the noise is to be considered continuous.
(d) Exposure to impulsive or impact noise
						should not exceed 140 dB peak sound pressure level.
Note: Authority cited and Reference: Section
							 142.3, Labor
							 Code.