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 (decibels) | ||
Daytime operation only | 5 | ||
Noise source operates less than:1 | |||
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 an M District and is not within 500 feet measured horizontally or vertically of any R District | 10 | ||
NOTES: 1Apply one of these corrections only. |
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 (decibels) | ||
Daytime operation only | 5 | ||
Noise source operates less than:1 | |||
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 an M District and is not within 500 feet measured horizontally or vertically of any R District | 10 | ||
NOTES: 1Apply one of these corrections only. |