§ 156.326 NOISE RESTRICTIONS; VIBRATION RESTRICTIONS.

   (A)   Noise. 

      (1)   (a)   Sound levels shall be measured with a sound level meter and associated octave band filter manufactured according to standards prescribed by the IOSHA. The flat network and the slow meter response shall be used. Sounds of short duration which cannot be measured accurately with the sound level meter shall be measured with the impact noise analyzer, as manufactured by the General Radio Company or its equivalent, in order to determine the peak value of the impact.

         (b)   For sounds so measured, the peak values shall not exceed by six decibels the values given in the table in division (A)(2) below.

      (2)   At no point on the boundary of a residential, commercial, or M-1 district shall the sound pressure level of any operation or plant (other than background noises not directly under the control of the manufacturer) exceed the decibel limits in the octave bands designated in the following table.

Octave Band Frequency, in Cycles per Second (CPS)	Decibel Limits
	AG and R Boundaries	C and M-1 Boundaries
0 to 75	72	79
75 to 150	67	74
150 to 300	59	66
300 to 600	52	59
600 to 1,200	46	53
1,200 to 2,400	40	47
2,400 to 4,800	34	41
Over 4,800	32	39

 

   (B)   Vibration.  

      (1)   No industrial operation or activity, except those not under the direct control of the manufacturer, shall cause at any time ground-transmitted vibrations in excess of the limits set forth below.

      (2)   Vibrations shall be measured at any point along an agricultural, residential, or commercial zoning district boundary line with a three-component measuring instrument approved by national recognized standards, and shall be expressed as displacement in inches.

 

Frequency, in Cycles per Second	Vibration Limits Along District Boundary Line, Displacement in Inches
0 to 10	.0004
10 to 20	.0002
20 to 30	.0001
30 to 40	.0001
40 and over	.0001

 

(Ord. 23, §§ 3.120.70 and 3.120.80, passed 3-19-1997) Penalty, see § 156.999