(A)   No person may discharge any material, other than storm water into the city storm drain system or receiving waters, unless a permit has first been obtained.
   (B)   The following discharges are exempt from the general permit requirement in subsection (A) of this section:
      (1)   Discharges originating from a state, federal, or other source for which the city is preempted from regulating by State or federal law;
      (2)   Discharges covered by a separate individual or general NPDES permit, or conditional waiver for irrigated lands;
      (3)   Discharge flows from fire-fighting activities; or
      (4)   Discharges that fall within one of the categories below that are not a source of pollutants that exceed water quality standards, and where specified, meet all the conditions stated:
         (a)   Natural flows.
            1.   Stream diversions authorized by the State board.
            2.   Natural springs and rising groundwater.
            3.   Uncontaminated groundwater infiltration.
            4.   Flows from riparian habitats or wetlands, provided all necessary permits or authorization are received prior to diverting the stream flow.
         (b)   Flows incidental to urban activities.
            1.   Discharges from potable water sources provided the flows are:
               (i)   Low volume, incidental, and infrequent releases that are innocuous from a water quality perspective;
               (ii)   Dechlorinated, pH adjusted if necessary, re-oxygenated, and both the volume and velocity are controlled to prevent re-suspension of sediments; and
               (iii)   All sediments must be collected and disposed of in a legal manner.
            2.   Gravity flow from foundation, footing, and crawl space drains.
            3.   Discharges from air conditioning condensate with flow segregated to prevent introduction of pollutants.
            4.   Reclaimed and potable irrigation water runoff with flow segregated to prevent introduction of pollutants.
            5.   Dechlorinated/debrominated swimming pool discharges that:
               (i)   Do not have chlorine or bromine residuals that exceed 0.1 mg/L;
               (ii)   Do not contain any chemicals, detergents, wastes, or algaecides;
               (iii)   Do not contain cyanuric acid in excess of 50 ppm;
               (iv)   Do not contain salts or pH levels in excess of the water quality standards set forth in the municipal storm water permit;
               (v)   The volume and velocity is controlled to prevent re-suspension of sediments; and
               (vi)   The cleaning waste water and filter back wash is not discharged to storm drain system.
         (c)   Non-commercial car washing by residents or non-profit organizations.
         (d)   Sidewalk rinsing using a high pressure-low volume of water device with no additives.
         (e)   Pooled storm water from treatment BMPs provided that:
            1.   The discharge is not a source of pollutants; and
            2.   Sediments are to be disposed of properly in compliance with all applicable laws.
(Ord. No. 2459, 2806, 2876)