Ordinance 3880-22 - Laserfiche WebLink

Version: May 19, 2022 12. Discharges from emergency fire fighting activities. 13. Non-storm water discharges authorized by another NPDES or state waste discharge permit. C. Conditionally Allowable Discharges. The following types of discharges shall not be considered illicit discharges for the purpose of this chapter if they meet the stated conditions, or unless the Director or designee determines that the type of discharge, whether singly or in combination with others, is causing or is likely to cause pollution of surface water or ground water: 1. Potable water sources, including but not limited to water line flushing, hyper-chlorinated water line flushing, fire hydrant system flushing, and pipeline hydrostatic test water. Planned discharges shall be dechlorinated to a total residual chlorine concentration of 0.1 ppm or less, pH-adjusted, if necessary, and volumetrically and velocity controlled to prevent resuspension of sediments in the storm water system. 2. Lawn watering and other irrigation runoff. These discharges shall be minimized through, at a minimum, public education activities and water conservation efforts. 3. Dechlorinated swimming pool, spa and hot tub discharges. These discharges shall be dechlorinated to a total residual chlorine concentration of 0.1 ppm or less, pH-adjusted, and re- oxygenized if necessary, volumetrically and velocity controlled to prevent resuspension of sediments in the storm water system. Discharges shall be thermally controlled to prevent an increase in temperature of the receiving water. Swimming pool cleaning wastewater and filter backwash shall not be discharged to the stormwater system. 4. 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 through public education activities and/or water conservation efforts. To avoid washing pollutants into the stormwater system, minimize the amount of street wash and dust control water used. 5. Other non-stormwater 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. D. Failure to Remove Pollutants from Private System. It shall be a violation of this chapter for any person who commits an illicit or conditional discharge in violation of this section to fail to remove the pollutants from a private system that enters the stormwater drainage system and/or surface and ground 18