Discharges from firefighting activities, fire hydrant flushing, potable water sources, water line flushing, uncontaminated ground water, foundation or footing drains, springs, riparian habitats, wetlands, irrigation water, air conditioning condensate, exterior building wash water when no detergents or other surfactants are used and pavement wash waters where spills or leaks of toxic or hazardous materials have not occurred and when no detergents or other surfactants are used.