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 to a level within the range of 6.5 and 8.5, if necessary and in volumes and velocities controlled to prevent resuspension of sediments in the stormwater system;

B. Lawn watering and other irrigation runoff are 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 to a level within the range of 6.5 and 8.5, 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 from the director for any discharge to the stormwater drainage system;

F. Other nonstormwater discharges. The discharges shall be in compliance with the requirements of a stormwater pollution prevention plan (SWPPP) reviewed and approved by the city, which addresses control of such discharges by applying AKART to prevent contaminants from entering surface or groundwater. (Ord. 016/2021 § 2; Ord. 013/2009 § 1)