Sound level measurement shall be made in accordance with the following procedures.
(A) All measurements shall be made with a sound level meter using the “A” weighted scale in accordance with the standards promulgated by the Society of Automotive Engineers and American National Standards Institute. Whenever possible, the enforcing officials shall determine the ambient noise level for the enforcement location. The ambient noise level for each enforcement location shall be established by obtaining the noise level reading for a period of five minutes before enforcement and a five-minute period immediately following enforcement with a reading to be taken every 30 seconds during the five-minute period of time. The average of these readings will constitute the ambient noise level at that location during the enforcement period. The microphone shall be placed no nearer than three feet from any reflective surface and must be located a minimum of four feet above ground level.
(B) Impulsive type noises shall be subject to the performance standards hereinafter prescribed, provided that equipment suitable for noise measurement, as defined by this chapter, is used. Noises such as those of an irregular and intermittent nature shall be restricted as provided for hereinafter.
(1999 Code, § 53.10) Penalty, see § 93.99