A. The following discharges are not significant contributors of pollutants to the municipal MS4s and are considered allowable non-stormwater discharges, unless the city determines in specific instances that the discharge contributes to a violation of the AZPDES General Permit or other permits under which the city is permitted to operate its MS4:
1. Water line flushing
2. Landscape irrigation
3. Diverted stream flows
4. Rising ground waters
5. Uncontaminated ground water infiltration
6. Uncontaminated pumped groundwater
7. Discharges from potable water sources
8. Foundation drains
9. Air conditioning condensate (residential)
10. Springs
11. Footing drains
12. Individual residential car washing
13. Discharges from riparian habitats and wetlands
14. De-chlorinated swimming pool and spa discharges
15. Discharges of flows from emergency fire fighting activities
B. The city permits discharges allowed under the AZPDES De Minimus General Permit, and the city will rely on the State of Arizona to enforce the provisions regarding these discharges under that permit. The city may, however, require a person to demonstrate that a discharge is subject to that permit. Discharge allowed under separate permits issued by ADEQ are allowed provided that the permit conditions are adhered to.
C. Discharges which have been managed using BMP that are appropriate to the facility at the time of the discharge and properly maintained shall be considered allowable. It is the responsibility of the person discharging to demonstrate through testing, records, plans, and other documents that the discharge is allowable under this chapter. The city may require such demonstration for any facility connected to the MS4 directly or indirectly.
(Ord. 14-1105, passed 1-14-2014)