Packet: Tiffin City Council Work Session (09/15/2026)

CHAPTER 166 ESTABLISHMENT OF ZONING DISTRICTS AND THE OFFICIAL ZONING MAP J. Revocation of Permits. If an alleged violation is determined to be valid by the independent engineering analysis, any permits previously issued in conjunction with the established use, building, or structure are void and the operator shall cease operation until the violation is remedied. Failure to cease operation within two days of notice constitutes a violation of this Zoning Code and the penalty provision cited in Section 165.32 may be imposed. K. 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 analyzers calibrated in the preferred frequencies (American Standards Association S1 6-1960, Preferred Frequencies for Acoustical Measurements) shall be used with the following tables. The suspected perpetrator will be required to hire, at the approval of the City, a consultant to measure, record, and report to the Council results about compliance with this Code. All costs shall be the responsibility of the property owner. b. Maximum Permitted Sound Level. Octave Bank Frequency Cycles per Second Decibels 0-74 58 75-149 54 150-299 50 300-599 46 600-1,199 40 1,200-2,399 33 2,400-4,799 26 4,800-over 20 c. Exceptions. The following uses and activities shall be exempt from the noise level in the C-3 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 10:00 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 relief valves. CODE OF ORDINANCES, TIFFIN, IOWA - 1671 -