Performance Standards
Table III | ||
|---|---|---|
Frequency Ranges Containing Standard Octave Bands in Cycles Per Second | Octave Band Sound-Pressure Level in Decibels re 0.0002 Dyne/cm2 | |
20 to 300 | 60 | |
300 to 2,400 | 40 | |
Above 2,400 | 30 | |
Table IV | |||
|---|---|---|---|
Type or Location of Operation or Character of Noise | Correction in Decibels | ||
Daytime operation only | 5 | ||
Noise source operates less than: | 5 | ||
20% of any one-hour period | 5 | ||
5% of any one-hour period | 10 | ||
Noise of impulsive character, hammering, etc. | -5 | ||
Noise of periodic character, hum, screech, etc. | -5 | ||
Property is located in any C, M or MSCO District and is not within 500 feet, measured horizontally or vertically, of any R District | 5 (C and MSCO Districts); 10 (M District) | ||
Performance Standards
Table III | ||
|---|---|---|
Frequency Ranges Containing Standard Octave Bands in Cycles Per Second | Octave Band Sound-Pressure Level in Decibels re 0.0002 Dyne/cm2 | |
20 to 300 | 60 | |
300 to 2,400 | 40 | |
Above 2,400 | 30 | |
Table IV | |||
|---|---|---|---|
Type or Location of Operation or Character of Noise | Correction in Decibels | ||
Daytime operation only | 5 | ||
Noise source operates less than: | 5 | ||
20% of any one-hour period | 5 | ||
5% of any one-hour period | 10 | ||
Noise of impulsive character, hammering, etc. | -5 | ||
Noise of periodic character, hum, screech, etc. | -5 | ||
Property is located in any C, M or MSCO District and is not within 500 feet, measured horizontally or vertically, of any R District | 5 (C and MSCO Districts); 10 (M District) | ||