Washington Administrative Code
Title 173 - Ecology, Department of (See also Titles 197, 317, 372, and 508)
Chapter 173-60 - Maximum environmental noise levels
Section 173-60-040 - Maximum permissible environmental noise levels
Universal Citation: WA Admin Code 173-60-040
Current through Register Vol. 24-06, March 15, 2024
(1) No person shall cause or permit noise to intrude into the property of another person which noise exceeds the maximum permissible noise levels set forth below in this section.
(2)
(a) The
noise limitations established are as set forth in the following table after any
applicable adjustments provided for herein are applied.
|
EDNA OF NOISE SOURCE |
EDNA OF RECEIVING PROPERTY |
||
|
Class A |
Class B |
Class C |
|
|
CLASS A |
55 dBA |
57 dBA |
60 dBA |
|
CLASS B |
57 |
60 |
65 |
|
CLASS C |
60 |
65 |
70 |
(b)
Between the hours of 10:00 p.m. and 7:00 a.m. the noise limitations of the
foregoing table shall be reduced by 10 dBA for receiving property within Class
A EDNAs.
(c) At any hour of the day
or night the applicable noise limitations in (a) and (b) above may be exceeded
for any receiving property by no more than:
(i) 5 dBA for a total of 15 minutes in any
one-hour period; or
(ii) 10 dBA for
a total of 5 minutes in any one-hour period; or
(iii) 15 dBA for a total of 1.5 minutes in
any one-hour period.
Order 74-32, § 173-60-040, filed 4/22/75, effective 9/1/75.
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