No person will throw, dump, drain, or otherwise discharge, cause, or allow others under its control to throw, dump, drain, or otherwise discharge into the storm water management system any pollutants or waters containing any pollutants, other than storm water. The commencement, conduct, or continuance of any illegal discharge to the storm drain system is prohibited except as described as follows:
(1) The following discharges are exempt from discharge prohibitions established by this chapter: water line flushing, landscape irrigation, diverted stream flows, rising ground waters, uncontaminated ground water infiltration, uncontaminated pumped ground water, discharges from potable water sources, foundation drains, air conditioning condensation, irrigation water, springs, water from crawl space pumps, footing drains, lawn watering, individual residential car washing, flows from riparian habitats and wetlands, dechlorinated swimming pool discharges, and street wash water.
a. Discharge of swimming pools, crawl spaces, sump pumps, footing drains, and other sources that may be determined to contain sediment or other forms of pollutants may not be discharged directly to the storm drainage system. This discharge must be allowed to flow over a vegetated area to allow filtering of pollutants, evaporation of chemicals, and infiltration of water consistent with the storm water requirements of the city.
(2) Discharges or flow from firefighting, and other discharges specified by the city as being necessary to protect public health and safety.
(3) Discharges associated with dye testing, however this activity requires a verbal notification to the city prior to the time of the test.
(4) The prohibition will not apply to any non-storm water discharge permitted under a National Pollutant Discharge Elimination System ( NPDES) permit, waiver, or waste discharge order issued to the discharger and administered under the authority of the Minnesota Pollution Control Agency (MPCA), 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.
(Ord. 2015-28, passed 11-2-2015)