929.08 PRETREATMENT REQUIREMENTS.
   Users shall provide necessary pretreatment of wastewater to comply with applicable discharge limitations contained in Sections 929.03 through 929.06. Any facilities to pretreat wastewater shall be provided, operated, and maintained at the User's expense. Detailed plans showing the pretreatment facilities and operating procedures shall be submitted to the City for review, and shall be acceptable to the City before construction of the facility. The review of such plans and operating procedures will in no way relieve the User from the responsibility of modifying the facility as necessary to produce an effluent acceptable to the City under the provisions of this chapter. Any subsequent changes in the pretreatment facilities or method of operation or upgrading of pretreatment facilities which were in use at the effective date of this section shall be reported to and be acceptable to the City prior to the User's initiation of the changes.
   Plans, specifications, and any other pertinent information relating to proposed preliminary treatment facilities shall be submitted for approval of the City Manager and of the proper water pollution control commission of the State; and no construction of such facilities shall be commenced until such approvals are obtained in writing.
   The admission into the public sewers of any waters or wastes having any or all of the following characteristics shall be subject to review and approval of the City Manager.
   (a)   A 5-day BOD greater than 300 parts per million (ppm) by weight; or
   (b)   Containing more than 350 ppm by weight of suspended solids; or
   (c)   Containing any quantity of substances having the characteristics described in Section 929.03; or
   (d)   Having an average daily flow greater than 2 percent of the average daily sewage flow of the City.
   Where necessary, in the opinion of the City Manager, the Owner shall provide, at his expense, such preliminary treatment as may be necessary to reduce the BOD to 300 ppm and the suspended solids to 350 ppm by weight or to reduce objectionable characteristics or constituents to within the maximum limits provided for in Section 929.06 or to control the quantities and rates of discharge of such waters or wastes.
   Grease, oil, and sand interceptors shall be provided when, in the opinion of the City Manager, they are necessary for the proper handling of liquid wastes containing grease in excessive amounts or any flammable wastes, sand, and other harmful ingredients; except that such interceptors shall not be required for private living quarters or dwelling units. All interceptors shall be of a type and capacity approved by the City Manager and shall be located so as to be readily and easily accessible for cleaning and inspection.
   Grease and oil interceptors shall be constructed of impervious materials capable of withstanding abrupt and extreme changes in temperature. They shall be of substantial construction, watertight, and equipped with easily removable covers which, when bolted in place shall be gastight and watertight.
   Where installed, all grease, oil, and sand interceptors shall be maintained by the Owner, at his expense, in continuously efficient operation at all times.
(Ord. 85-33. Passed 6-4-85.)