California Code of Regulations
Title 23 - Waters
Division 4 - Regional Water Quality Control Boards
Chapter 1 - Water Quality Control Plans, Policies, and Guidelines
Article 5 - Central Valley Region
Section 3949.12 - Amendment to the Water Quality Control Plan for the Sacramento and San Joaquin River Basins for the Control of Diazinon and Chlorpyrifos Discharges

The Amendment establishes water quality objectives and implementation and monitoring requirements to protect water bodies in the Sacramento and San Joaquin Valleys from impairment due to discharges of diazinon and chlorpyrifos associated with uses of these pesticides in agricultural operations and in urban areas. The goal of the Amendment is to reduce diazinon and chlorpyrifos concentrations in Sacramento and San Joaquin Valley water bodies to levels that are protective of aquatic life (WARM and/or COLD) beneficial uses.

1. New section summarizing amendments to basin plan filed 3-8-2017; amendments approved by State Water Resources Control Board Resolution No. 2015-0043 on 6-6-2015; amendments approved by OAL pursuant to Government Code section 11353 on 3-8-2017 (Register 2017, No. 10).