California Department of Transportation

Storm Water -PPDG

In 2013, the State Water Resources Control Board (SWRCB) issued a National Pollutant Discharge Elimination System (NPDES) permit that regulates storm water discharges from Caltrans facilities. The permit requires Caltrans to maintain and implement an effective Storm Water Management Plan (SWMP) that identifies and describes the Best Management Practices (BMPs) used to control the discharge of pollutants to waters of the United States.

This Guide describes the process for Caltrans staff to incorporate the BMPs from the SWMP into the planning and design phases of a project. It is important to note that this guide provides only minimum guidelines, and that storm water controls other than what are included may need to be incorporated on a project-by-project basis to comply with special requirements from a Regional Water Quality Control Board. This Guide may be updated as needed to reflect changes to the SWMP.

April 15, 2016 PPDG Implementation Memo New!

2016 PPDG

The February 2016 PPPD is available to view or download in pdf format.

2010 PPDG

The July 2010 PPDG is available to view or download in pdf format. This includes all replacement pages as of September 2010.
The replacement pages are available for printing if you received a previous hard copy.

This page last updated April 18, 2016