TABLE I
| ||
---|---|---|
Continuous Sound - Slow Response Meter
Level
| ||
Maximum Sound in dBA
| ||
Receiving Land Use Category
|
Day
|
Night
|
Class A (residential)
|
65
|
55
|
Class B (commercial)
|
70
|
60
|
Class C (industrial)
|
80
|
70
|
Impulsive Sound - Fast Response Meter
Level
| ||
---|---|---|
Maximum Sound in dBA
| ||
Receiving Land Use Category
|
Day
|
Night
|
Class A (residential)
|
75
|
65
|
Class B (commercial)
|
80
|
70
|
Class C (industrial)
|
90
|
80
|
Notes:
| |
1 With impulsive noise, the following
adjustment in the allowable maximum levels shall apply:
|
Repetitions per hour
|
Adjustment
|
---|---|
3-10
|
Deduct 1 dBA
|
11-20
|
Deduct 2 dBA
|
21-60
|
Deduct 3 dBA
|
Over 60
|
Deduct 4 dBA
|
2 In the event that the background
noise (ambient) level for a given receiving land use exceed the standards
above, the following maximum sound levels, measured using the criteria
above, shall apply:
| |||
|
|
| |
(a)
|
Any continuous sound which exceeds the ambient
level by 10 dBA or more.
| ||
(b)
|
Any impulsive sound which exceeds the ambient
level by 20 dBA or more, with the above adjustment applied
|
TABLE II
| ||
---|---|---|
Maximum Permitted Sound Levels, dBA
(RE: 0.0002 microbar)
| ||
Sound Measured in Response to the Noise
Source
|
Continuous Slow Meter Response
|
Impact Fast Meter
|
Decibels
|
Decibels
| |
Residential
|
50
|
60
|
Commercial
|
60
|
70
|
Industrial district lot
|
70
|
80
|