Stormwater Pollution Prevention Plan - Phoenix Sky Harbor ...

Non-mining MSGP 2010 General Permit
1. Fire fighting system testing and maintenance, including hydrant flushings;
2. Discharges related to installation and maintenance of potable water supply systems,
including disinfection and flushing activities, discharges resulting from pressure releases or
overflows, and discharges from wells approved by ADEQ for drinking water use;
3. Uncontaminated condensate from air conditioners, evaporative coolers, and other
compressors and from the outside storage of refrigerated gases or liquids;
4. Irrigation drainage and irrigation line flushing;
5. Landscape watering provided all pesticides, herbicides, and fertilizer have been applied in
accordance with the approved labeling;
6. Pavement wash waters where no detergents are used and no spills or leaks of toxic or
hazardous materials have occurred (unless all spilled material has been removed);
7. Routine external building washdown that does not use detergents;
8. Water used to control dust, provided effluent or other wastewaters are not used;
9. Uncontaminated groundwater or spring water;
10. Foundation or footing drains where flows are not contaminated with process materials such
as solvents;
11. Incidental windblown mist from cooling towers that collects on rooftops or adjacent portions of
the facility, but not intentional discharges from the cooling tower (e.g., “piped” cooling tower
blowdown or drains);
12. Hydrostatic testing of new pipes, tanks or vessels using potable water, surface water, or
uncontaminated groundwater;
13. Discharges of water associated with drilling, rehabilitation and maintenance of potable or
non-potable water wells and peizometers, or water supply or water quality evaluations
including:
a. Discharges from any borehole not fully developed;
b. Well purging;
c. Well/aquifer pump tests not associated with groundwater remediation activities;
d. Backflushing of injection wells provided the discharge meets applicable water quality
standards; and
14. Non-stormwater discharges subject to an effluent limitation guideline listed in Table 1-1.
1.1.4 Limitations on Coverage
1.1.4.1 Discharges Mixed with Non-Stormwater. Stormwater discharges that are mixed with
non-stormwater, other than allowable non-stormwater discharges listed in Part 1.1.3 are not
eligible for coverage under this permit.
1.1.4.2 Stormwater Discharges Associated with Construction Activity. Stormwater
discharges associated with construction activity are not eligible for coverage under this permit.
1.1.4.3 Discharges Currently or Previously Covered by another Permit. Unless the permittee
receives written notification from ADEQ specifically allowing these discharges to be covered
under this permit, the following are not eligible for coverage under this general permit:
Stormwater Discharges Associated with Industrial Activity 2