12.14.060 Prohibited discharge.
(1) No person shall throw, drain, or otherwise discharge, cause or allow others under its control to throw, drain, or otherwise discharge any pollutants or waters containing any pollutants other than stormwater into the drainage system.
(2) It is unlawful to make illicit discharges, or any discharge not composed entirely of stormwater either directly or indirectly into the drainage system. When the public works director has reason to believe that any discharge is an illicit discharge, the director may sample and analyze the discharge and recover the costs from a responsible party. When the discharge is likely to contain illicit discharge on a recurring basis, the director may conduct, or may require the responsible party to conduct, ongoing monitoring at the responsible party’s expense.
(3) The following types of discharges shall not be considered illicit discharges if they meet the stated conditions or unless the public works director determines that the type of discharge, whether singly or in combination with others, is causing or is likely to cause pollution of surface or groundwater:
(a) Potable water, including water from water line flushing, hyperchlorinated water line flushing, fire hydrant system flushing, and pipeline hydrostatic test water. Planned discharges shall be dechlorinated to a concentration of 0.1 ppm or less, pH-adjusted if necessary, and in volumes and velocities controlled to prevent resuspension of sediments in the stormwater system.
(b) Lawn watering and other irrigation runoff is permitted but shall be minimized.
(c) Dechlorinated swimming pool discharges. These discharges shall be dechlorinated to a concentration of 0.1 ppm or less, pH-adjusted if necessary, and in volumes and velocities controlled to prevent resuspension of sediments in the stormwater system.
(d) Street and sidewalk wash water, water used to control dust, and routine external building wash down that does not use detergents are permitted if the amount of street wash and dust control water used is minimized. At active construction sites, street sweeping must be performed prior to washing the street.
(e) Nonstormwater discharges covered by another NPDES permit; provided, that the discharger is in full compliance with all requirements of the permit, waiver, or order and other applicable laws and regulations; and provided, that written approval has been granted for any discharge to the storm drain system.
(f) Other nonstormwater discharges reviewed and approved by the city, which may include methods of prevention, control and/or treatment to ensure contaminants do not enter surface or groundwater. (Ord. 1405 § 1 (Exh. 1), 2015).