Notwithstanding other requirements in this chapter, stormwater co-mingled with other discharges either regulated by other NPDES permits or determined by the County Surveyor, County Drainage Board, or the County Clean Water Department to not be a significant source of pollutants, including the following, are exempt from the requirements of this section:
(A) Water line and hydrant flushing for maintenance;
(B) Irrigation water;
(C) Footing, foundation, and crawl space drains (uncontaminated);
(D) Excess storm sewer cleaning water not collected by a vacuum truck (uncontaminated);
(E) Fire suppression activities;
(F) Uncontaminated pumped groundwater;
(G) Springs;
(H) Residential car washing;
(I) Non-commercial car washing by community organizations;
(J) External building washdown, without detergents;
(K) Dechlorinated/debrominated residential swimming pool discharges;
(L) Uncontaminated groundwater infiltration (as defined at 40 CFR 35.2005(20));
(M) Pavement wash waters provided spills or leaks of toxic or hazardous materials have not occurred (unless all spill material has been removed) and where detergents are not used;
(N) Uncontaminated condensate from air conditioning units, coolers, and other compressors, and from outside storage of refrigerated gases or liquids.
(Ord. 2023-45, passed 12-12-2023)