(a) Except as described in § 35.0111(b), herein, the following categories of non-storm water discharges are exempt from the discharge prohibitions in § 35.0110 of the County Code, if the discharge does not degrade the Storm Drain System:
(1) Discharges composed entirely of storm water;
(2) Air conditioning condensate;
(3) Irrigation water;
(4) Uncontaminated waters from passive foundation drains, passive footing drains, or from crawl space pumps;
(5) Non-commercial vehicle washing, for example, residential car washing (excluding engine degreasing) and car washing for fundraisers by non-profit organizations;
(6) Dechlorinated swimming pool discharges (cleaning wastewater and filter backwash shall not be discharged into the Storm Drain System or to Waters of the U.S.);
(7) Diverted stream flows, provided required permits are obtained;
(8) Rising groundwaters and natural springs, if the groundwater is uncontaminated;
(9) Uncontaminated groundwater infiltration as defined in Title 40 of the CFR, § 35.2005 (20) and uncontaminated pumped groundwater;
(10) Flows from riparian habitats and wetlands;
(11) Emergency fire fighting flows;
(12) Waters not otherwise containing wastes as defined in Water Code § 13050(d);
(13) Non-storm water agricultural discharges that the SWRCB or RWQCB explicitly allows pursuant to a written waiver, waste discharge requirement, or formal policy, provided that the discharger can demonstrate compliance with all relevant permits, waiver or policy conditions to the satisfaction of the SWRCB or RWQCB; and
(14) Discharge of trauma scene post-cleanup residues and other discharges provided that it is in conformance with the RWQCB’s conditional waiver of waste discharge requirement.
(b) Any discharge category described in § 35.0111(a) that the Authorized Enforcement Officer determines is a significant source of pollutants to Waters of the United States shall be prohibited from entering the Storm Water Conveyance System or receiving waters, or the discharger shall implement BMPs to reduce pollutants in that discharge to the MEP, using the best available technology.
(Ord. 3105, passed - -1986; Readopted by Ord. 3587, passed - -1994; Am. Ord. 4176, passed - -2012)