(A)   National categorical pretreatment standards for new and existing indirect sources, as promulgated under 40 C.F.R. § 403.6 and 40 C.F.R. Ch. I, Subch. N, are hereby incorporated as part of this chapter by reference. Industrial users subject to the applicable categorical standards shall comply with the more stringent of these standards or the local limitations established and adopted by the city.
   (B)   The city shall develop limitations for pollutants of concern contributed by industrial users in concentrations that may cause interference or pass through of the POTW treatment works.
   (C)   Best management practices (BMPs) may be developed by the control authority as a local limit and if so, shall be incorporated in the administrative orders of wastewater acceptance.
   (D)   The city reserves the right to add to or revise local limitations on discharges to the POTW, as deemed necessary to ensure continued compliance with the POTW’s NPDES permit, or sludge use or disposal practices.
   (E)   Specific effluent limits shall not be developed and enforced without individual notice to persons or groups who have requested such notice and an opportunity to respond. Industrial users affected by the adoption of new or revised pollutant limitations shall be given a reasonable period of time to comply with such changes.
   (F)   No industrial user shall discharge wastewater concentrations and/or mass-based loadings to the POTW exceeding the limitations for the regulated pollutants specified in the user’s administrative orders of wastewater acceptance issued by the city, or any discharge violating the prohibited discharges listed in § 1054.04(A) and (B) of this chapter.
   (G)   (1)   No industrial user shall discharge or cause to be discharged into the sewerage system any regulated substance or pollutant in concentrations above the background concentrations as established by the city, unless the pollutant is listed and limitations are provided in administrative orders of wastewater acceptance issued by the city.
      (2)   Categorical users regulated by concentration-based may now have those limits converted to equivalent mass-based limits according to 40 C.F.R. § 403.6(c)(5).
   (H)   Sampling and analysis of all pollutants regulated under this chapter shall be performed according to approved test methods established and contained in 40 C.F.R. part 136, and amendments thereto, or analytical methods directly specified by 40 C.F.R. part 403. Where approved test methods or procedures for a given pollutant are not included or are inappropriate, any alternative method developed must be validated and approved by the Administrator of the U.S. EPA.
   (I)   The authority may impose mass-based limitations on industrial users which are using dilution to meet the pretreatment standards or limitations of this chapter, or in other cases where the imposition of mass limitations is deemed appropriate.
   (J)   When limits in categorical pretreatment standards are expressed only in terms of mass of pollutants per unit of production, the authority may convert the mass-based limits to equivalent mass-based limitations expressed either as mass discharged per day or as effluent concentration limits. The equivalent concentration- based limitations will be deemed pretreatment standards which industrial users will be required to comply with in lieu of promulgated standards per 40 C.F.R. § 403.6(c)(6).
   (K)   The Authority may control, by administrative order, any industrial user discharge of conventional pollutants (BOD, COD, TSS and the like), and discharge flow rates, to limit excessive pollutant concentrations and loadings or to prevent an adverse impact on the POTW treatment plant operations.
   (L)   Any violation of applicable federal, state or city industrial pretreatment standards is a violation of this chapter.
(Prior Code, § 1054.11)  (Ord. 59-1991, passed 4-8-1991; Ord. 149-2013, passed 9-9-2013)