Cal. Code Regs. tit. 23 § 3947

Current through Register 2024 Notice Reg. No. 50, December 13, 2024

Section 3947 - Program to Control the Discharge of Diazinon and Chlorpyriphos into the Sacramento and Feather Rivers

The Central Valley Regional Water Quality Control Board adopted Resolution number R5-2003-0148 on October 16, 2003 and Revised under Resolution number R5-2007-0034 a Program to Control the Discharge of Diazinon and Chlorpyriphos into the Sacramento and Feather Rivers. The Amendment and its revisions incorporate the following provisions into the Central Valley Regional Water Quality Control Board's (Regional Board's) Water Quality Control Plan for the Sacramento River and San Joaquin River Basins (Basin Plan):

Water Quality Objectives

Revises maximum diazinon concentration (1-hour average and 4-day average) in the Sacramento and Feather Rivers not to be exceeded more than once every three years on the average.

Establishes a maximum chlorpyriphos concentration (1-hour average and 4 day average) in the Sacramento and Feather Rivers not to be exceeded more than once every three years.

Establishes wasteload and load allocations for diazinon and chlorpyriphos.

Revises Implementation Provisions for Discharge into the Sacramento and Feather Rivers to include diazinon and chlorpyriphos. Requires compliance with diazinon and chlorpyriphos water quality objectives, wasteload and load allocation by the date of U.S. Environmental Protection Agency approval.

1. Requires Regional Board review of the allocations and implementation provisions by June 30, 2013 and every five years thereafter.

2. States that the Regional Board will require any additional reductions in Diazinon and chlorpyriphos necessary to account for additive or synergistic effects or protect tributary waters.

3. Requires the submission of a management plan to the Regional Board that describes the actions to be taken by diazinon dischargers to meet the allocations and objectives.

4. Requires any waiver of waste discharge requirements to be consistent with the provisions of the implementation program.

5. Includes estimates of the cost of the program for agriculture.

Contains requirements for a monitoring and reporting program associated with any waiver of waste discharge requirements or waste discharge requirements that addresses pesticide runoff in the Sacramento Valley.

Cal. Code Regs. Tit. 23, § 3947

1. New section summarizing amendments to Basin Plan filed 6-9-2004; amendments adopted by the Central Valley Regional Water Quality Control Board 10-16-2003 by Resolution No. R5-2003-0148. Approved by the State Water Resources Control Board 4-22-2004 by Resolution No. 2004-0022; approved by OAL 6-8-2004 pursuant to Government Code section 11353 (Register 2004, No. 24).
2. Amendment of section heading and section summarizing changes to Basin Plan filed 5-12-2008; amendments adopted by the Central Valley Regional Water Quality Control Board 5-3-2007 by Resolution No. R5-2007-0034. Approved by State Water Resources Control Board 2-19-2008 by Resolution No. 2008-0013; amendment approved by OAL 5-12-2008 pursuant to Government Code section 11353 (Register 2008, No. 20).