(1) Potable water discharges, including water line flushing, fire hydrant system flushing, and pipeline hydrostatic testing, when the discharge contains less than 0.1 milligram per liter of total residual chlorine, has a pH between 6.5 and 8.5, and does not cause resuspension of sediment in the public drainage system;

(2) Swimming pool, hot tub, and spa discharges other than swimming pool cleaning wastewater and filter backwash, when the discharge (a) contains less than 0.1 milligram per liter of total residual chlorine, (b) does not contain algicides other than chlorine or bromine compounds, and (c) is thermally controlled as necessary to prevent an increase in temperature of receiving waters; and

(3) Discharges of water from washing streets, sidewalks, and building exteriors, and water used to control dust, when the discharge does not contain soap or detergent, and when streets and sidewalks associated with active construction sites are swept prior to washing. (Added by Ord. 08-091, July 30, 2008, Eff date Aug. 21, 2008; Amended by Amended Ord. 13-023, Apr. 17, 2013, Eff date Apr. 28, 2013).