Briones Reservoir Inlet/Outlet Tower Retrofit and Isolation Valve Replacement Project


SCH Number
Public Agency
East Bay Municipal Utility District (EBMUD)
Document Title
Briones Reservoir Inlet/Outlet Tower Retrofit and Isolation Valve Replacement Project
Document Type
NOE - Notice of Exemption
Document Description
The project will seismically retrofit the Briones inlet/outlet tower and is needed to comply with the Division of Safety of Dams requirements and to safeguard the Briones Dam in the event of an earthquake and will replace the Tower's isolation valve at a more safely accessible location. The seismic retrofit activities would strengthen the inlet/outlet tower by installing vertical steel strips inside the upper section of the existing tower (see Attachment A). This Notice of Exemption (NOE) supersedes the previous NOE filed in December 2018.

Contact Information

Chien Wang
Agency Name
Lead Agency
Contact Types
Lead/Public Agency


Contra Costa
Other Location Info
The project is located on East Bay Municipal Utility District (EBMUD)-owned watershed land in unincorporated Contra Costa County (see attached Figure 1 in Attachment A) at and near the Briones Reservoir.

Notice of Exemption

Exempt Status
Categorical Exemption
Type, Section or Code
15301, 15303
Reasons for Exemption
Under Section 15301, the repair, maintenance, or minor alteration of existing public structures involving negligible or no expansion of use are categorically exempt. Under Section 15303, construction of new, small facilities or structures are exempt.
County Clerk
Contra Costa


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