§ 52.08  INDUSTRIAL PRETREATMENT AND NONACCEPTABLE WASTEWATER.
   (A)   In regard to sewage that is admissible to the sewage system only after pretreatment, and in regard to pretreatment requirements in general, the conditions and regulations promulgated under § 307(b) of the Clean Water Act, being 33 U.S.C. § 1317(b) are incorporated into this section and made a part hereof.
   (B)   An industrial user must, upon application for sewer service, present to the city a tabulation of the chemical analysis of the wastes to be discharged to the sewage system and the volume of such wastes, or if this is not available, the expected waste analysis based on similar processes now in operation.
   (C)   If the character of sewage from any industrial user is such that it will damage the sewage system or cannot be treated satisfactorily at the wastewater treatment plant, the city shall compel such user to dispose of such waste and prevent it from entering the sewage system.
   (D)   If the character of sewage from any industrial user is such that the sewage imposes an unreasonable burden upon the sewage system greater than that imposed by the average sewage entering the system, the city may proceed in any of the following manners:
      (1)   Compel such user to pretreat the sewage in such manner as specified by the city before the sewage is discharged into the system;
      (2)   Require flow control or equalization of such waste so as to avoid any “slug” loads or excessive loads that may be harmful to the treatment works;
      (3)   Require payment of a surcharge on any excessive flows or loadings discharged to the treatment works so as to cover the additional costs of having capacity for and treating such wastes; or
      (4)   Make a special agreement with the user for treatment or disposal of the sewage so as to ensure that the integrity of the treatment facilities and the receiving stream is preserved.
   (E)   The discharge of nonacceptable industrial wastewater into the sewage system, whether directly or indirectly, is prohibited. Wastewater shall be nonacceptable when the concentration of toxic or harmful substances in the wastewater exceeds certain prescribed tolerable limits as specified in § 307(a) of the Clean Water Act, being 33 U.S.C. § 1317(a), or regulations promulgated thereunder, both of which are hereby incorporated herein. The list of substances specified in the foregoing federal laws is subject to revisions as required to meet current water quality standards or effluent standards imposed by state or federal agencies. However, if the city determines that the concentration of any such substances is such that the total pounds of such substances discharged into the system are not harmful to or will not interfere with the sewage treatment process or will not violate water quality standards, then the concentrations may be exceeded.
   (F)   The city may make a special agreement with an industrial user so as to accept for treatment an industrial waste of unusual strength or character. Any such special agreement shall be authorized by ordinance passed for that specific agreement.
   (G)   Each industrial user shall provide protection from accidental discharge of prohibited materials or other wastes regulated by this chapter. Facilities to prevent such accidental discharges shall be provided and maintained at the owner’s or operator’s own cost and expense. Detailed plans showing facilities and operating procedures to provide this protection shall be submitted to the city for review, and shall be approved by the city before construction of any such facility. Review and approval of such plans and operating procedures shall not relieve the industrial user from the responsibility to modify his or her facility as necessary to meet the requirements of this chapter.
   (H)   If an accidental discharge facility does not comply with or will be unable to comply with any prohibition or limitations in this chapter, the industrial user responsible for such discharge shall immediately notify the city so that corrective action may be taken to protect the treatment system. In addition, the responsible industrial user shall file with the Director of Public Safety and Service, within five days of the occurrence of the noncomplying discharge, a written report detailing the date, time and cause of the accidental discharge; the quantity and characteristics of the discharge; and corrective action taken to prevent future discharges.
   (I)   The regulation of nonacceptable wastewater in this section is in addition to, and not in lieu of, the regulation of prohibited discharges in § 52.05.
(2003 Code, § 52.08)  (Ord. 3195, passed 3-19-1998)  Penalty, see § 52.99