RBI served as the lead consultant for special studies conducted to support obtaining Clean Water Act Section 316(a) exceptions to California Thermal Plan temperature objectives applied in NPDES permits. Approval of the exceptions by the Central Valley Regional Water Quality Board (Regional Water Board) and fish resource agencies – California Department of Fish and Game, NOAA Fisheries, and U.S. Fish and Wildlife Service was also obtained by RBI on behalf of our clients. RBI has developed, or is currently developing, exceptions to the state Thermal Plan for the following clients:
Thermal Effects Study — Sacramento Regional Wastewater Treatment Plant Discharge to the Sacramento River
Robertson-Bryan, Inc. (RBI) was the lead technical consultant in developing and implementing a study of the potential temperature-related effects of the Sacramento Regional Wastewater Treatment Plant (SRWTP) discharge on the aquatic resources of the lower Sacramento River—a study required by the SRWTP’s NPDES permit adopted by the Central Valley Regional Water Quality Control Board in 2010. The purpose of the temperature study was to determine whether conditions in the lower Sacramento River, as regulated by the current Thermal Plan exceptions and temperature limitations in the 2010 NPDES permit, are protective of aquatic life in the Sacramento River, and to further determine if alternative requested exceptions to the Thermal Plan would be protective of aquatic life in the river. RBI led the following activities in this study.
RBI conducted consultation with federal resource agencies to secure the necessary approvals and permit to conduct the field study, which involved tracking and capturing fish, and installation and use of associated equipment. RBI also led the presentation results to the Regional San and federal and state resource agencies.