Review and written approval of the city shall be obtained prior to the discharge into the public sewers of any waters or wastes having any of the following:
A. 
A five-day biochemical oxygen demand in excess of 300 parts per million;
B. 
A suspended solids content in excess of 25 pounds per day;
C. 
A monthly discharge in excess of 50,000 gallons per day.
(Ord. 88-O-430 Art. VI § 1)
The city shall determine when a user is an industrial user with the use of sampling equipment. When the user is declared to be an industrial user by the city, such user shall be directed by the city to furnish its own sampling equipment at the user’s expense, all test results from the user’s equipment shall be copied and a copy submitted to the city for the city’s use.
(Ord. 88-O-430 Art. VI § 2)
Where required, in the opinion of the city, to modify or eliminate wastes that are harmful to the structures, processes, or operation of the wastewater treatment works, the person shall provide at his expense such preliminary treatment or processing facilities as may be necessary to render his wastes acceptable for admission to the public sewers.
(Ord. 88-O-430 Art. VI § 3)
Plans, specifications, and any other pertinent information relating to proposed preliminary treatment or processing facilities shall be submitted for approval of the city and DEQ prior to the start of their construction, if the effluent from such facilities is to be discharged into the public sewers.
(Ord. 88-O-430 Art. VI § 4)
No statement contained in Articles V, VI and VII of this chapter shall be construed as prohibiting any special agreement or arrangement between the city and any person whereby an industrial waste of unusual strength or character may be admitted to the wastewater treatment works, either before or after pretreatment; provided, that there is no impairment of the functioning of the wastewater treatment works by reason of the admission of such wastes, and that all costs are paid in full by the industrial concern without recompense by the city.
(Ord. 88-O-430 Art. VI § 5)