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13.12.500 – Wastewater discharge permit authority and requirements

  1. Individual Wastewater Discharge Permit issued to Significant Industrial Users (SIUs) which includes Categorical Industrial Users (CIUs):
    1. No SIU, including any CIU, shall discharge wastewater into the POTW without first obtaining a wastewater discharge permit from the Director of Public Works or designee, except that a SIU, including any CIU, that has filed a timely application pursuant to Section 13.12.540 of this chapter may continue to discharge for the time period specified therein, provided the discharge in all other respects does not violate any provision of this chapter.

  2. General Wastewater Discharge Permit issued to SIU and CIU:
    1. At the discretion of the Director of Public Works or designee, the City may use general wastewater discharge permits to control SIU or CIU discharges to the POTW if the following conditions are met:
      1. Involve the same or substantially similar types of operations;
      2. Discharge the same types of waste;
      3. Require the same effluent limitations;
      4. Require the same or similar monitoring and/or reporting requirements; and
      5. In the opinion of the Director of Public Works or designee, are more appropriately controlled under a general permit than under individual wastewater discharge permits.
  3. Other Wastewater Discharge Permits:
    1. The Director of Public Works or designee may require other non-residential users obtain either individual or general wastewater discharge permits as necessary to carry out the purposed of this chapter.  The wastewater discharge permit will define that holders of permits issued under this section not be classified as SIUs. Non-residential users with wastewater discharge permits in this class may include but are not limited to:
      1. Any User that has been determined to be a non-significant CIU as defined in Section 13.12.120;
      2. Any User that has been determined not to be a SIU as defined in Section 13.12.120 that the Director of Public Works or designee requires to be regulated by wastewater discharge permit;
      3. Any User subject to national categorical pretreatment standards that opts not to discharge pollutants shall obtain a zero process wastewater discharge permit;
      4. Any User that is a non-categorical zero process wastewater discharger that the Director of Public Works or designee determines shall be permitted;
      5. Non-Significant Regulated Users (NSRU) as defined below.  In the event that the City operates more than one POTW, the percentage shall be determined based on the plant to which the User discharges rather than the total capacity of all the City plants:
        1. NSRU that discharge a process wastewater flow greater than or equal to one-half (0.5) percent of the POTW’s design dry-weather hydraulic capacity, or five thousand (5,000) gallons per day, whichever is smaller;
        2. NSRU that discharge more than or equal to one-half (0.5) percent of the design dry-weather organic treatment capacity of the POTW;
        3. NSRU that discharge one-half (0.5) percent of the maximum allowable headworks loading for any pollutant regulated by a local limit developed in accordance with Section 13.12.430; or
        4. NSRU that intermittently discharge any individual batch or batches that would meet the criteria in 1, 2, or 3 above when discharged or otherwise has the potential to discharge a slug load to the POTW.
      6. Non-residential users that have devices installed to remove oils, grease and sand; and
      7. Commercial businesses that prepares and/or serves food.
  4. Any violation of the terms and conditions of an individual or general wastewater discharge permit shall be deemed a violation of this chapter and subjects the wastewater discharge permittee to the sanctions set forth in this Chapter. Obtaining an individual or general wastewater discharge permit does not relieve a permittee of its obligation to comply with all Federal and State pretreatment standards or requirements and local limits or with any other requirements of Federal, State, and local law.
(2022-M-43: § 1)