Frequency Ranges Containing Standard Octave
Bands
(cycles per second)
|
Octave Band Sound-Pressure Level1
(decibels)
|
---|---|
31.5
|
60
|
63
|
60
|
125
|
60
|
250
|
55.3
|
500
|
40
|
1,000
|
40
|
2,000
|
37.6
|
4,000
|
30
|
8,000
|
30
|
Type or Location of Operation or Character
of Noise
|
Correction
(decibels)
|
---|---|
Daytime operation only
|
5
|
Noise source operates less than1:
| |
20% of any 1-hour period
|
5
|
5% of any 1-hour period
|
10
|
Noise of impulsive character (hammering etc.)
|
-5
|
Noise of periodic character (hum, screech, etc.)
|
-5
|
Property is located in 1 of the following zoning
districts and is not within 500 feet of any R District:
| |
Any B District
|
5
|
Any I District
|
10
|
1 NOTE: Apply one
of these corrections only.
|