(A) No user shall deposit into the sanitary sewer system of the city, any material which will clog or substantially impede the flow in sanitary sewer, or impede the operations of the sewerage treatment plant. The user shall be subject to the enforcement by the city of all existing city sewer ordinances in effect, at all times. The user shall further provide, install and maintain screening facilities if required by the city and approved by the city’s Engineer for the removal of solids from its wastes so that the materials going into the sanitary sewer are maintained at a minimum size level to prevent undue problems in the sewerage treatment plant of the city. This screening shall be required upon finding of the need for screening by the city. The user shall install the screens, at its own cost, upon receipt of written notice by the city to the user.
(B) Whenever the waste from any user is found to interfere with the aerobic processes of the sewerage treatment plant of the city, written notice shall be given by the city to the user, and the user shall be required to construct a waste treatment system and to pretreat all waste before it is discharged into the city sanitary sewer system. Pretreatment shall be sufficient to reduce the strength or characteristic of the wastes to such a degree that it will not interfere with the aerobic processes of the sewerage treatment plant of the city. The notice shall be served upon the user and shall set a date and time for compliance with this section.
(C) It shall be a prima facie case that a waste interference with the aerobic processes of the sewerage treatment plant exists if the waste contains acidity below pH 5.5; or the waste contains alkalinity of above pH 9.5; or any grab-sample taken at any time of any day has materials or constituents immediately noticeable that are detrimental to the aerobic processes existing in the sewerage treatment plant as determined by the city’s Engineer.
(D) (1) Plans, specifications and design data for the pretreatment facilities shall be submitted to and approved by the city’s Engineer and by the state’s Environmental Protection Agency before any construction work on the pretreatment system is begun.
(2) Construction, maintenance and operation of said pretreatment facilities shall be the sole responsibility of the user, and shall be maintained continuously in satisfactory and effective operating condition by the user at its expense.
(E) The pretreatment standards as published in the Federal Register on 11-8-1973 and all amendments thereto are incorporated and by reference made a part of this subchapter.
(1994 Code, § 52.065) (Ord. 262, passed 3-8-1976) Penalty, see § 52.999