TMDL Projects
San Joaquin River Organophosphorous (OP) Pesticide TMDL

To request a copy of documents listed on this page, please contact Jessica Rader at or (916) 464-3199.

The Basin Plan Amendment for the Control of Diazinon and Chlorpyrifos Runoff into the Lower San Joaquin River was adopted by the Regional Board on October 21, 2005. It has been approved by the State Water Resources Control Board (SWRCB) and the Office of Administrative Law. Final approval by U.S. EPA was received on December 20, 2006.

Contact Us