APPENDIX B: OCTAVE-BAND BREAKDOWNS
   The octave-band breakdowns of the dBA limits used in this chapter shall be:
   (A)   For a residential zone: (55 dBA)
 
Octave-band center frequency (Hz)
Maximum boundary SPL (dB)
31.5
72
63
71
125
65
250
57
500
51
1,000
45
2,000
39
4,000
34
8,000
32
 
   (B)   For a commercial zone: (64 dBA)
 
Octave-band center frequency (Hz)
Maximum boundary SPL (dB)
31.5
79
63
78
125
73
250
67
500
61
1,000
55
2,000
50
4,000
46
8,000
43
 
   (C)   For an industrial zone: (66 dBA)
 
Octave-band center frequency (Hz)
Maximum boundary SPL (dB)
31.5
80
63
79
125
74
250
69
500
63
1,000
57
2,000
52
4,000
48
8,000
45