634.04 METHODS OF MEASUREMENT.
   In measuring sound the following methods shall be used:
   (a)   Either Type 1 (precision) or Type 2 (general purpose) sound level meters shall be used to measure sound pressure dB(A) as specified in American National Standards Institute specifications (ANSI S1.4-1971) or the latest approved revision thereof.
   (b)   Points of measurement for stationary noise sources shall be on lot lines. Points of measurement for traffic noise shall be on right-of-way lines or fifty feet from the noise source, whichever is greater.
   (c)   For stationary noise sources, sounds shall be measured at not less than eight points on lot lines, the location of which shall be determined by the Building Inspector.
   (d)   For traffic noise sources, sounds shall be measured at a single point, with not more than one reading from that point.
   (e)   Sounds of short duration, as from forge hammers, punch presses and metal shears, shall be measured with an impact noise filter that conforms to specifications published by the American Standards Association, in order to determine peak value of the impact.
      (Ord. 78-61. Passed 6-19-78.)