Storm Water Pollution Prevention Plan
Projects which disturb one or more acres of soil or projects which disturb less than one acre but are part of a larger common plan of development that in total disturbs one or more acres, are required to obtain coverage under the General Permit for Discharges of Storm Water Associated with Construction Activity (Construction General Permit, 2009-0009-DWQ). Construction activity subject to this permit includes clearing, grading and disturbances to the ground (e.g., stockpiling or excavation). The permit does not include regular maintenance activities performed to restore the original line, grade, or capacity of the facility.
The Construction General Permit requires the development and implementation of a Storm Water Pollution Prevention Plan (SWPPP). The SWPPP should contain a site map(s) which shows the construction site perimeter, existing and proposed buildings, lots, roadways, stormwater collection and discharge points, general topography (both before and after construction) and drainage patterns across the project. The SWPPP must list BMPs that will be used to protect stormwater runoff and the placement of those BMPs. In addition, the SWPPP must contain a visual monitoring program; a chemical monitoring program for "non-visible" pollutants to be implemented if there is a failure of BMPs; and a sediment monitoring plan if the site discharges directly to a water body listed on the 303(d) list for sediment.
Available resources used to develop a Storm Water Pollution Prevention Plan include:
Developing Your Stormwater Pollution Prevention Plan: A Guide for Construction Sites
The United States Environmental Protection Agency developed Developing Your Stormwater Pollution
Prevention Plan: A Guide for Construction Sites for site operators who are required to prepare a SWPPP to meet NPDES permit requirements for their stormwater discharges. The guide provides SWPPP templates and a sample inspection report.
Storm Water Pollution Prevention Plan (SWPPP) Templates
An example SWPPP Template was developed by the California Stormwater Quality Association (CASQA) and is part of the CASQA Construction Handbook BMP Portal. Please see your stormwater coordinator for a login and password to obtain a copy of the SWPPP Template.
Guidelines for Construction Projects
This manual was compiled by the San Francisco Bay Regional Water Quality Control Board and includes information on the following: General Permit for Discharges of Storm Water Associated with Construction Activity, a guide to the State Water Resources Control Board, detailed instructions on preparing a SWPPP and Notice of Intent (NOI) to comply with the SWPPP, 404 Permit and 401 Water Quality Certification requirements and Waste Discharge Requirements. This manual may be purchased through the
Association of Bay Area Governments (ABAG).