The following types of discharges are not prohibited under this article unless they are found to be a source of pollutants:
(1) Discharges in compliance with an AZPDES/NPDES permit;
(2) Discharges in compliance with an approved Corrective Action Plan utilizing Best Management Practices.
(3) Discharges of the following types of naturally occurring water are not prohibited:
a. Stormwater;
b. Rising groundwater;
c. Springs and ponds;
d. Diverted stream flow;
e. Flows from riparian habitats and wetlands; and
f. Pumped unpolluted groundwater.
(4) Discharges that qualify for the AZPDES De Minimus General Permit are not prohibited as long as these discharges are in compliance with the permit. Qualifying discharges include:
a. Discharges from installation and maintenance of potable water supply systems;
b. Discharges from subterranean dewatering;
c. Discharges from well development and maintenance and/or aquifer testing;
d. Discharges of groundwater, surface water or potable water from hydrostatic testing;
e. Discharges of groundwater, surface water or potable water associated with installation and maintenance of reclaimed water system transport discharges;
f. Discharges from residential non-contact cooling water (including overflow from air conditioning condensate and evaporative coolers);
g. Discharges from charitable noncommercial car washes when only the exterior of vehicles are being washed with water only or when biodegradable soap is used;
h. Discharges from building or street washing where only water or biodegradable soaps are used;
i. Discharges of dechlorinated pool water; and
j. Other de minimus discharges as specifically approved by ADEQ.
(5) Additional types of discharges, which do not contribute to a violation of the city's Municipal Stormwater Permit may be allowed upon submittal of a copy of the discharger's written authorization from the Arizona Department of Environmental Quality or the Environmental Protection Agency. Such authorization shall be submitted to the city prior to the time of discharge, and must be retained for at least three (3) years after the last discharge made pursuant to the authorization.
(Ord. No. 10209, § 3, 10-18-05)