Del Valle Dam K-Rail Parapet Wall (OM-DFD-2025-015)
Summary
SCH Number
2025100161
Public Agency
California Department of Water Resources
(DWR)
Document Title
Del Valle Dam K-Rail Parapet Wall (OM-DFD-2025-015)
Document Type
NOE - Notice of Exemption
Received
Posted
10/3/2025
Document Description
DWR staff will install K-Rail in two phases to function as a temporary parapet wall. Phase 1 will place the K-Rail along the upstream side of the crest of the dam with the side open to allow continued access. Phase 2 will place the remaining K-Rail to close the parapet wall. To reduce seepage through and under the wall staff will use crackfiller, polyethylene sheets, and sandbags. The sides of the wall will tie into the abutments with minor surface earthwork. The K-rail will be anchored to the road surface. All equipment and work will be within the DWR right-of-way.
Contact Information
Name
Todd Percival
Agency Name
Department of Water Resources
Job Title
Senior Environmental Scientist (Specialist)
Contact Types
Lead/Public Agency / Parties Undertaking Project
Phone
Name
Jennifer Worsley
Agency Name
Department of Water Resources
Job Title
Senior Environmental Scientist (Specialist)
Contact Types
Lead/Public Agency / Parties Undertaking Project
Phone
Location
Coordinates
Cities
Livermore
Counties
Alameda
Regions
San Francisco Bay Area
Other Information
South Bay Aqueduct (SBA), Del Valle Dam
Notice of Exemption
Exempt Status
Categorical Exemption
Type, Section or Code
Existing Facilities, Section No. 15301, Class 1 (m)
Reasons for Exemption
The State Water Project provides significant and critical services to California. This project is exempt because it involves Minor repairs and alterations to an existing dam under the supervision of the Department of Water Resources. This project will not result in impacts to special status species or habitat. The Categorical Exemption Class 1 will be used for CEQA compliance as this activity will be implemented without any environmental impacts.
County Clerk
Alameda
Attachments
Notice of Exemption
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