Ill. Admin. Code tit. 35 § 901.103
Except as provided elsewhere in this Part, a person must not cause or allow the emission of sound from any property-line noise source located on any Class A, B or C land to any receiving Class B land that exceeds any allowable octave band sound pressure level specified in the following table, when measured at any point within the receiving Class B land. Sound pressure levels must be measured at least 25 feet from the property-line noise source.
Octave Band Center Frequency (Hertz) | Allowable Octave Band Sound Pressure Levels (dB) of Sound Emitted to any Receiving Class B Land from | ||
Class C Land | Class B Land | Class A Land | |
31.5 | 80 | 79 | 72 |
63 | 79 | 78 | 71 |
125 | 74 | 72 | 65 |
250 | 69 | 64 | 57 |
500 | 63 | 58 | 51 |
1000 | 57 | 52 | 45 |
2000 | 52 | 46 | 39 |
4000 | 48 | 41 | 34 |
8000 | 45 | 39 | 32 |
Ill. Admin. Code tit. 35, § 901.103
Amended at 30 Ill. Reg. 5533, effective March 10, 2006