The admission into public sewers of any waters or wastes having:
Subd. 1. A five day biochemical oxygen demand greater than 300 parts per million by weight; or
Subd. 2. Containing more than 350 parts per million by weight of suspended solids; or
Subd. 3. Containing any quantity of substances having the characteristics described in § 904.11 of this chapter; or
Subd. 4. Having an average daily flow greater than 2% of the average daily sewage flow of the city, shall be subject to the review and approval of the City Council.
(1987 Code, § 904.12)