§ 7.7. Noise.

No activity in an M-2 General Manufacturing District shall produce a sound level outside the district boundary that exceeds the following sound level measured by a sound level meter and associated octave band filter:

Octave Band Frequency (cycles per second)	Sound Level (Decibels)
0—75	79
75—150	74
150—300	66
300—600	59
600—1,200	53
1,200—2,400	47
2,400—4,800	41
Above 4,800	39

 

No other activity in any other district shall produce a sound level outside its premises that exceeds the following:

Octave Band Frequency (cycles per second)	Sound Level (decibels)
0—75	72
75—150	67
150—300	59
300—600	52
600—1,200	46
1,200—2,400	40
2,400—4,800	34
Above 4,800	32

 

All noise shall be so muffled or otherwise controlled as not to become objectionable due to intermittence, duration, beat frequency, impulse character, periodic character or shrillness.