City of Sunnyvale

In order to protect water quality, the State of California has adopted a National Pollutant Discharge Elimination System (NPDES) General Permit for Storm Water Discharges Associated with Construction Activity. The NPDES permit requires development or redevelopment projects to meet certain standards for storm water protection, depending on the size of the project. Following are general requirements for building plan review and permit issuance:

Projects the Disturb One Acre or More of Soil

Projects that disturb one acre (43,560 square feet) or more of soil (include private property and any work in the public right-of-way) are required to file a Notice of Intent (NOI) and a Storm Water Pollution Prevention Plan (SWPPP) with the San Francisco Bay Regional Water Quality Control Board. Two copies of the NOI and SWPPP should be included with the plans submitted for building permit review.

Additional information about obtaining and filing these documents can be obtained by contacting the San Francisco Bay Regional Water Quality Control Board at (510)622-2300 or www.swrcb.ca.gov/stormwtr/construction.html.

Project That Create One Acre or More of Impervious Surface

Projects that create one acre (43,560 square feet) or more of impervious surface including roof area, uncovered decks or porches, impervious paving and sidewalks require permanent storm water protection measures to be designed into project. Specific design requirements can be found in the Sunnyvale Municipal Code Section 12.60 and in the following Sunnyvale Storm Water Quality Guidance Manuals:

Volume 1 (PDF)
Volume 2 (PDF)

Copies of these documents are also available at the One-Stop Permit Center, City Hall, 456 W. Olive Avenue, Sunnyvale, CA 94086.

The following should be included with the plans submitted for building permit review:

· Two copies of the Storm Water Management Plan showing permanent storm water treatment measures. These plans are to be on independent sheets and label as the “Storm Water Management Plan.” These sheets should also bear an original stamp and signature from the certified third party reviewer showing these plans were the plans reviewed.

· Two copies of a letter (wet stamped and signed) from a certified third party reviewer stating that the Storm Water Management Plans meet the requirements of the Sunnyvale Municipal Code Section 12.60.

Website Links

California Storm Water Quality Association’s New Development and Redevelopment Handbook

The New Development and Redevelopment Handbook provides general guidance for selecting and implementing Best Management Practices (BMPs) to reduce pollutants in runoff in newly developed areas and redeveloped areas

http://www.cabmphandbooks.com/Development.asp

California Storm Water Quality Association’s Construction Handbook

The Construction Handbook provides general guidance for selecting and implementing Best Management Practices (BMPs) that will eliminate or reduce the discharge of pollutants from construction sites

http://www.cabmphandbooks.com/Construction.asp

Santa Clara Valley Urban Runoff Pollution Prevention Program

an association of thirteen cities and towns in the Santa Clara Valley, together with Santa Clara County and the Santa Clara Valley Water District. Program participants share a common permit to discharge storm water to South San Francisco Bay, California. To reduce pollution in urban runoff to the "maximum" extent practicable, the Program incorporates regulatory, monitoring and outreach measures aimed at improving the water quality of South San Francisco Bay and the streams of the Santa Clara Valley.

http://www.scvurppp.org/

List of Qualified Consultants to Certify Storm Water Management Plans