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-CODE OF ORDINANCES
<br /> Chapter 78- UTILITIES
<br /> ARTICLE III. -SEWERS AND SEWAGE DISPOSAL
<br /> DIVISION 2. -SEWER USE AND DISCHARGE REQUIREMENTS
<br /> Subdivision III. - Discharge Restrictions
<br /> Sec. 78-153. - Prohibited discharges.
<br /> No person shall discharge or cause to be discharged, directly or indirectly, any of the following
<br /> described substances to any public sewer:
<br /> (1) Any liquids, solids, or gases which by reason of their nature or quantity are, or may be, sufficient
<br /> either alone or by interaction with other substances to cause fire or explosion or be injurious in
<br /> any other way to the wastewater disposal system or to the operation of the system. Prohibited
<br /> materials include, but are not limited to, gasoline, kerosene, naphtha, benzene, toluene, xylene,
<br /> ethers, alcohols, ketones, aldehydes, peroxides, chlorates, perchlorates, bromates, carbides,
<br /> hydrides and sulfides.
<br /> (2) Any water or wastes containing toxic or poisonous solids, liquids or gases in sufficient quantity,
<br /> either singly or by interaction with other wastes, to injure or interfere with any sewage treatment
<br /> process, to constitute a hazard to humans or animals, to create a public nuisance, or to create
<br /> any hazard in a wastewater treatment works. A toxic pollutant shall include, but not be limited
<br /> to, any pollutant identified pursuant to section 307(a)of the Act.
<br /> (3) Any water or wastes having a pH lower than 5.5 or having any other corrosive property capable
<br /> of causing damage or hazard to structures, equipment and personnel or the wastewater
<br /> treatment works.
<br /> (4) Solid or viscous substances, either whole or ground, in quantities or of such size to be capable
<br /> of causing obstruction to the flow in sewers or other interference with the proper operation of the
<br /> wastewater treatment works, including, but not limited to, ashes, cinders, disposal diapers,
<br /> glass grinding or polishing wastes, stone cutting or polishing wastes, sand, mud, straw,
<br /> shavings, metal, glass, rags, feathers, tar, plastics, wood, underground garbage, whole blood,
<br /> paunch manure, hair and fleshings, entrails, and sanitary napkins, paper dishes, cups, milk
<br /> containers and other paper products. Solids shall have a maximum allowable diameter of three
<br /> inches.
<br /> (5) Noxious or malodorous liquids, gases or substances which either singly or by interaction with
<br /> other wastes are sufficient to create a public hazard to life or are sufficient to prevent entry into
<br /> the sewers for their maintenance and repair.
<br /> (Code 1982, § 1300.02(7))
<br /> Sec. 78-154. - Restricted discharges.
<br /> No person shall discharge or cause to be discharged, directly or indirectly, the following described
<br /> substances to any public sewer, unless, in the opinion of the city, such discharge will not harm the
<br /> wastewater treatment works or cause obstruction to the flow in sewers or otherwise endanger life, limb or
<br /> public property or constitute a nuisance. In forming its opinion as to the acceptability of these wastes, the
<br /> city may give consideration to such factors as the quantities of the subject wastes in relation to flows and
<br /> velocities in the sewers, the nature of construction of the sewers, the nature of the sewage treatment
<br /> process, the capacity of the sewage treatment plant, the degree of treatability of wastes in the sewage
<br /> treatment plant, the city's NPDES permit, and other pertinent factors. The city may make such
<br /> determination on a general basis or as to the discharges from individual users or specific discharges, and
<br /> may prohibit certain discharges from individual users because of unusual concentrations or combinations
<br /> which may occur. The substances prohibited are:
<br /> Elk River, Minnesota, Code of Ordinances Page 17
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