Thermal Plan
The Water Quality Control Plan for Control of Temperature in the Coastal and Interstate Waters and Enclosed Bays and Estuaries of California (Thermal Plan) regulates temperature in the coastal and interstate waters and enclosed bays and estuaries of California. The Thermal Plan specifies both prohibitions and thermal water quality objectives in different areas, including Cold Interstate Waters, Warm Interstate Waters, Coastal Waters, Enclosed Bays, and Estuaries. The Thermal Plan also provides detailed guidelines for implementation.
Final Documents
Thermal Plan - last revised September 18, 1975
Resolution No. 75-89 - September 18, 1975
Thermal Plan Exceptions
The Thermal Plan authorizes exceptions to the Thermal Plan objectives, stating the following: “Regional Boards may, in accordance with Section 316(a) of the Federal Water Pollution Control Act of 1972 and subsequent federal regulations [collectively termed the Clean Water Act] including 40 CFR 122, grant an exception to Specific Water Quality Objectives in this Plan.”
Approved Exceptions
Sacramento Regional Wastewater Treatment Plant Concurrence with the Central Valley Regional Water Quality Control Board’s Order granting an exception to the State Thermal Plan for the Sacramento Regional Wastewater Treatment Plant. * Agenda Item Summary and Draft Resolution – June 21, 2016 * Resolution No. 2016-0036 - June 21, 2016
Mountain House Community Services District Wastewater Treatment Services Plan Concurrence with the Central Valley Regional Water Quality Control Board's Order granting an exception to the State Thermal Plan for the Mountain House Community Services District Wastewater Treatment Plant. * Agenda Item Summary - October 17, 2023 * Resolution No. 2023-0039 - October 17, 2023
(Page last updated 12/18/23) Water is a precious resource in California, and maintaining its quality is of utmost importance to safeguard the health of the public and the environment.
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