The following non-storm water sources, according to 40 C.F.R. § 122.26 and/or the city’s MS4 permit, may be discharged from the small MS4 and are not required to be addressed in the small MS4’s illicit discharge and detection or other minimum control measures, unless they are determined by the city or the TCEQ to be significant contributors of pollutants to the small MS4:
(A) Water line flushing (excluding discharges of hyper-chlorinated water, unless the water is first de-chlorinated and discharges are not expected to adversely affect aquatic life);
(B) Runoff or return flow from landscape irrigation, lawn irrigation and other irrigation utilizing potable water, ground water or surface water sources (excessive runoff can be deemed to be significant contributors of pollutants to the small MS4);
(C) Discharges from potable water sources (excessive runoff can be deemed to be significant contributors of pollutants to the small MS4);
(D) Diverted stream flows;
(E) Rising ground waters and springs;
(F) Uncontaminated ground water infiltration;
(G) Uncontaminated pumped ground water;
(H) Foundation and footing drains;
(I) Air conditioning condensation;
(J) Water from crawl space pumps;
(K) Individual residential vehicle washing (excessive runoff can be deemed to be significant contributor of pollutants to the small MS4);
(L) Flows from wetlands and riparian habitats;
(M) De-chlorinated swimming pool discharges;
(N) Street wash water (excessive runoff can be deemed to be significant contributor of pollutants to the small MS4);
(O) Discharges or flows from firefighting activities (firefighting activities do not include washing of trucks, run-off water from training activities, test water from fire suppression systems and similar activities);
(P) Other allowable non-storm water discharges listed in 40 C.F.R. § 122.26(d)(2)(iv)(B)(1) (excessive runoff can be deemed to be significant contributor of pollutants to the small MS4);
(Q) Non-storm water discharges that are specifically listed in the TPDES MS4 permit or a site specific TPDES construction general permit (CGP); and
(R) Other similar occasional incidental non-storm water discharges, unless the TCEQ develops permits or regulations addressing these discharges.
(Ord. passed 7-26-2010)