Santa Clara County Municipal Code Ch. IV Stormwater

Sec. B11.5-15. - Stormwater discharges associated with construction activity.

All projects requiring permits are subject to the applicable Regional Water Quality Control Board permit requirements. Applicants for projects that disturb a land area of one acre or more shall also submit evidence prior to building permit and/or grading permit issuance that they have complied with the requirements of the State of California NPDES General Permit for Storm Water Discharges Associated with Construction and Land Disturbance Activities.

(Ord. No. NS-517.84, 6-25-13; Ord. No. NS-517.87, § 3, 8-26-14)

Sec. B11.5-16. - Construction Site Best Management Practices (BMPs) under the NPDES Permit.

A. All construction sites shall install, implement and maintain BMPs consistent with the California Stormwater Quality Association (CASQA) Best Management Practices Handbook, or equivalent, which shall be implemented and maintained year round and include erosion control, run-on and runoff control, sediment control, active treatment systems (as appropriate), good site management, and non-stormwater management, at a minimum. Site specific, and seasonally and phase-appropriate BMPs are required through all phases of construction until the site is fully stabilized by landscaping or the installation of permanent erosion control measures.

B. All construction sites with a County permit must submit either a Stormwater Pollution Prevention Plan or an erosion/pollution control plan showing the BMPs set forth in section B11.5-16(a).

C. All construction sites shall be inspected by the County to verify that BMPs are installed, maintained, and effective. During the rainy season, all construction sites shall be inspected prior to commencement of any land disturbance activities.

D. At the conclusion of the project, an inspection by the County shall be performed to verify that the site has been stabilized and that all temporary erosion and sediment control measures that are no longer needed have been removed.

E. Construction sites that fail to implement and maintain effective BMPs measures shall be subject to enforcement actions as described in Division B11.5, Chapter III.

(Ord. No. NS-517.84, 6-25-13)