Discussion and Review of Tiffin Municipal Code Revisions – Preparation for Setting the Public Hearing — Tiffin City Code - DRAFT

CHAPTER 166 ESTABLISHMENT OF ZONING DISTRICTS AND THE OFFICIAL ZONING MAP I. Technical Provisions. (1) Noise. a. To measure the intensity and frequency of sound, the sound level meter, the octave band analyzer, and the impact noise analyzer may be employed. The flat network and the fast meter response of the sound level meter may be used. Sounds of short duration that cannot be measured accurately with the sound level meter may be measured with the impact noise analyzer. Octave band analyzer calibrated in the preferred frequencies (American Standards Association S1 6-1960, Preferred Frequencies for Acoustical Measurements) may be used with the following tables. Should a complaint be filed with the City regarding industrial use noise, the suspected violator must hire a consultant approved by the City to measure, record, and report to the City results of the analysis. The alleged violator will pay all costs of testing. b. At no point along the boundary of a residential district or along an adjacent lot shall the sound pressure level of any operation or plant exceed the decibel limits in the octave bands designated as follows. c. Maximum Permitted Sound Level. Octave Bank Frequency Cycles per Second Decibels 0-74 67 75-149 59 150-299 52 300-599 46 600-1,199 40 1,200-2,399 34 2,400-4,799 32 4,800-over 32 d. Exceptions. The following uses and activities shall be exempt from the noise level regulations in the M-2 District: i. Noises not directly under control of the property user. ii. Noises emanating from construction and maintenance activities between 7:00 a.m. and 9:00 p.m. Such activities are those that are non-routine operations accessory to the primary activities and that are temporary in nature, or conducted infrequently. iii. The noises of safety signals, warning devices, and emergency pressure valves. iv. Transient noises of moving sources such as automobiles, trucks, airplanes, and railroads. CODE OF ORDINANCES, TIFFIN, IOWA - 1732 -