Discharges of non-storm water from construction activities are generally prohibited except for those discharges listed in Section 8.80.207 of this chapter or any discharges authorized by the City Engineer or the Regional Water Quality Control Board (RWQCB). The City and the RWQCB will allow the discharge of certain non-storm water discharges from construction sites provided that they are in compliance with the discharge limitations specified in the current General Waste Discharge Requirements for De Minimus Discharges issued by the Regional Water Quality Control Board, Santa Ana Region.
The following discharges are authorized provided they are in compliance with the permit:
(1) Construction dewatering wastes;
(2) Wastes associated with well installation, development, test pumping and purging;
(3) Aquifer testing wastes;
(4) Dewatering wastes from subterranean seepage, except for discharges from utility company vaults;
(5) Discharges resulting from hydrostatic testing of vessels, pipelines, tanks, etc.;
(6) Discharges resulting from the maintenance of potable water supply pipelines, tanks, reservoirs, etc.;
(7) Discharges resulting from the disinfection of potable water supply pipelines, tanks, reservoirs, etc.;
(8) Discharges from potable water supply systems resulting from system failures, pressure releases, etc.;
(9) Discharges from fire hydrant testing or flushing;