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C. Authorized Discharges: <br /> 1. Stormwater Associated with Construction Activity. Subject to compliance with the <br /> terms and conditions of this permit,Permittees are authorized to discharge <br /> stormwater associated with construction activity to surface waters of the State or to <br /> a storm sewer system that drains to surface waters of the State. (Note that"surface <br /> waters of the State"may exist on a construction site as well as off site; for <br /> example,a creek running through a site.) <br /> 2. Stormwater Associated with Construction Support Activity. This permit also <br /> authorizes stormwater discharge from support activities related to the permitted <br /> construction site(for example,an on-site portable rock crusher,off-site equipment <br /> staging yards,material storage areas,borrow areas,etc.)provided: <br /> a. The support activity relates directly to the permitted construction site that is <br /> required to have an NPDES permit; and <br /> b. The support activity is not a commercial operation serving multiple unrelated <br /> construction projects,and does not operate beyond the completion of the <br /> construction activity;and <br /> c. Appropriate controls and measures are identified in the Stormwater Pollution <br /> Prevention Plan(SWPPP) for the discharges from the support activity areas. <br /> 3. Non-Stormwater Discharges. The categories and sources of non-stormwater <br /> discharges identified below are authorized conditionally,provided the discharge is <br /> consistent with the terms and conditions of this permit: <br /> a. Discharges from fire-fighting activities. <br /> b. Fire hydrant system flushing. <br /> c. Potable water, including uncontaminated water line flushing. <br /> d. Hydrostatic test water. <br /> e. Uncontaminated air conditioning or compressor condensate. <br /> f. Uncontaminated ground water or spring water. <br /> g. Uncontaminated excavation dewatering water(in accordance with S9.D.10). <br /> h. Uncontaminated discharges from foundation or footing drains. <br /> i. Uncontaminated water used to control dust. Permittees must minimize the <br /> amount of dust control water used. <br /> j. Routine external building wash down that does not use detergents. <br /> k. Landscape irrigation water. <br /> The SWPPP must adequately address all authorized non-stormwater discharges, except <br /> for discharges from fire-fighting activities,and must comply with Special Condition S3. <br /> Construction Stormwater General Permit <br /> Page 6 <br />