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 Maximum Permitted Particulate Matter Emission Rate Pounds per Hour Height of Emissions (ft) (Per Acre) 200-299 1.16 300-399 1.30 400-over 1.50 c. Method of Measurement. i. Smoke. To grade the density or equivalent opacity of emission of smoke, the Ringelmann Chart shall be employed. To determine smoke units, the Ringelmann reading shall be made at least every minute during the period of observation. Each reading (Ringelmann number) shall be multiplied by the time in minutes for which it is observed, and the products added together to determine the total number of smoke units observed during the total period of observation. ii. Particulate Matter. The total net rate of emission of particulate matter within the boundaries of any lot shall be determined as follows: Determine the maximum emission in pounds per hour from each source of emission and divide this figure by the number of acres of lot area, thereby obtaining the hourly rate of emission in pounds per acre. Add together the individual rate of emission as derived above to obtain the total rate of emission from all sources of emission within the boundaries of the lot. This total shall not exceed the rate established in the table in Section 166.16(14)(K)(3)(b). (4) Odors. No continuous, frequent, or repetitive emission of odors or odor-causing substances that would be offensive beyond any property line of any commercial use will be permitted. An odor emitted no more than 15 minutes in any one day shall not be deemed as continuous, frequent, or repetitive within the meaning of these regulations. The existence of an odor shall be presumed when analysis by a competent technician demonstrates that a discernible odor is being emitted. Any process that may involve the creation or emission of any odors shall be provided with a primary and a secondary safeguard system so that control will be maintained if the primary safeguard system fails. The rules and regulations of the Iowa Environmental Protection Agency shall be complied with. (5) Radiation Hazards. The handling of radioactive materials, the discharge of such materials into air and water, and the disposal of radioactive wastes shall not be allowed in the C-1B District. (6) Fire and Explosive Hazards a. The provisions of Sections 93.143-156 of the Code of Iowa shall be complied with, and no explosives may be CODE OF ORDINANCES, TIFFIN, IOWA - 1643 -