Table 1
| ||
---|---|---|
Octave Band and Frequency
(cycles per second)
|
Maximum Permitted Sound Level at Zone
Boundaries or at Lot Lines
(decibels)
| |
0 to 75
|
72
| |
75 to 150
|
67
| |
150 to 300
|
59
| |
300 to 600
|
52
| |
600 to 1,200
|
46
| |
1,200 to 2,400
|
40
| |
2,400 to 4,800
|
34
| |
Above 4,800
|
32
|
Table 2
| ||
---|---|---|
Type of Operation or Character of Noise
|
Correction
(decibels)
| |
Noise source operates less than 20% in any one-hour
period
|
+5*
| |
Noise source operates less than 5% in any one-hour
period
|
+10*
| |
Noise source operates less than 1% in any one-hour
period
|
+15*
| |
Noise of impulsive character (hammering, etc.)
|
-5
| |
Noise of periodic character (hum, screech, etc.)
|
-5
|
NOTES: *Apply one of these corrections
only.
|