General Regulations
Table I Maximum Permissible Sound-Pressure Levels Measured re 0.0002 dyne per CM2 | |
|---|---|
Frequency Band (cycles per second) | Decibels |
20 - 75 | 74 |
75 - 150 | 59 |
150 - 300 | 52 |
300 - 600 | 46 |
600 - 1,200 | 42 |
1,200 - 2,400 | 39 |
2,400 - 4,800 | 35 |
4,800 - 10,000 | 32 |
Table II — Correction Factors | |
|---|---|
Condition | Correction in Decibels |
On a site contiguous to or across a street from the boundary of any residence district established by this chapter or the Zoning Ordinance of any other municipality | Minus 5 |
Operation between the hours of 10:00 p.m. and 7:00 a.m. | Minus 5 |
Sound of impulsive character (e.g., hammering) | Minus 5 |
Sound of periodic character (e.g., hum or screech) | Minus 5 |
Sound source operated less than: | |
10% in any one-hour period | Plus 5* |
2% in any one-hour period | Plus 10* |
* NOTE: Apply only one of these corrections. All other corrections, including any of the starred corrections, are cumulative. |
General Regulations
Table I Maximum Permissible Sound-Pressure Levels Measured re 0.0002 dyne per CM2 | |
|---|---|
Frequency Band (cycles per second) | Decibels |
20 - 75 | 74 |
75 - 150 | 59 |
150 - 300 | 52 |
300 - 600 | 46 |
600 - 1,200 | 42 |
1,200 - 2,400 | 39 |
2,400 - 4,800 | 35 |
4,800 - 10,000 | 32 |
Table II — Correction Factors | |
|---|---|
Condition | Correction in Decibels |
On a site contiguous to or across a street from the boundary of any residence district established by this chapter or the Zoning Ordinance of any other municipality | Minus 5 |
Operation between the hours of 10:00 p.m. and 7:00 a.m. | Minus 5 |
Sound of impulsive character (e.g., hammering) | Minus 5 |
Sound of periodic character (e.g., hum or screech) | Minus 5 |
Sound source operated less than: | |
10% in any one-hour period | Plus 5* |
2% in any one-hour period | Plus 10* |
* NOTE: Apply only one of these corrections. All other corrections, including any of the starred corrections, are cumulative. |