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

CHAPTER 97 USE OF PUBLIC SEWERS 5. Excessive B.O.D., Solids or Flow. A. Any waters or wastes: (1) Having a five-day biochemical oxygen demand greater than 300 parts per million by weight; or (2) Containing more than 350 parts per million by weight of suspended solids; or (3) Having an average daily flow greater than two percent of the average sewage flow of the City, shall be subject to the review of the Superintendent. B. Where necessary in the opinion of the Superintendent, the owner shall provide, at the owner’s expense, such preliminary treatment as may be necessary to: (1) Reduce the biochemical oxygen demand to 300 parts per million by weight; or (2) Reduce the suspended solids to 350 parts per million by weight; or (3) Control the quantities and rates of discharge of such waters or wastes. A. Plans, specifications, and any other pertinent information relating to proposed preliminary treatment facilities shall be submitted for the approval of the Superintendent, and no construction of such facilities shall be commenced until said approvals are obtained in writing. 97.04 RESTRICTED DISCHARGES. . No person shall discharge or cause to be discharged the following described substances, materials, waters, or wastes if it appears likely in the opinion of the Superintendent that such wastes can harm either the sewers, sewage treatment process, or equipment, have an adverse effect on the receiving stream or can otherwise endanger life, limb, public property, or constitute a nuisance. In forming an opinion as to the acceptability of these wastes, the Superintendent will give consideration to such factors as the quantities of subject wastes in relation to flows and velocities in the sewers, materials of construction of the sewers, nature of the sewage treatment process, capacity of the sewage treatment plant, degree of treatability of wastes in the sewage treatment plant, and other pertinent factors. The substances restricted are: 1. High Temperature. Any liquid or vapor having a temperature higher than 150℉ (65℃). 2. Fat, Oil, Grease. Any water or waste containing fats, wax, grease, or oils, whether emulsified or not, in excess of 100 milligrams per liter or 600 milligrams per liter of dispersed or other soluble matter. 3. Viscous Substances. Water or wastes containing substances that may solidify or become viscous at temperatures between 32℉ and 150℉ (0℃ to 65℃). 4. Garbage. Any garbage that has not been properly shredded, that is, to such a degree that all particles will be carried freely under the flow conditions normally prevailing in public sewers, with no particle greater than one-half inch in any dimension. CODE OF ORDINANCES, TIFFIN, IOWA - 784 -