§ 1014-2.002. Intent and purpose.

(a)

The intent of this division is to protect and enhance the water quality of the county's unincorporated area watercourses pursuant to and consistent with the Porter-Cologne Water Quality Control Act (Water Code Section 13000 et seq.), the Federal Clean Water Act (33 U.S.C. Section 1251 et seq.) and applicable implementing regulations.

(b)

This division also carries out the conditions in the county's National Pollutant Discharge Elimination System (NPDES) permit issued by the San Francisco Bay Regional Water Quality Control Board that require, no later than February 15, 2005, implementation of appropriate source control and site design measures and stormwater treatment measures for projects that create or replace one acre (forty-three thousand five hundred sixty square feet) or more of impervious surface. Effective August 15, 2006, this threshold is reduced to projects that create or replace ten thousand square feet or more of impervious surface.

(c)

It is the purpose of the board of supervisors in enacting this division to protect the health, safety and general welfare of the citizens of the unincorporated areas by:

(1)

Eliminating, to the maximum extent practicable, illicit stormwater discharges to the stormwater system, pollutants of which otherwise would degrade the water quality of local streams.

(2)

Minimizing increases in nonpoint source pollution caused by stormwater runoff from development that otherwise would degrade local water quality.

(3)

Controlling the discharge to the county's stormwater system from spills, dumping, or disposal of materials other than stormwater.

(4)

Reducing stormwater runoff rates and volumes and nonpoint source pollution whenever possible through stormwater management controls and ensuring that these management controls are properly maintained and pose no threat to public safety.

(5)

Promoting no adverse impact (NAI) policies as developed by the Federal Emergency Management Agency (FEMA) and the Association of State Floodplain Managers (ASFPM), to the maximum extent practicable, in an effort to minimize the adverse impact of new development on stormwater quality or quantity.

(Ord. 2005-01 § 2, 96-21 § 3).