Del Valle COW/FCOW Phase 2 Investigation (OM-DFD-2024-018)
Summary
SCH Number
2025060269
Public Agency
California Department of Water Resources
(DWR)
Document Title
Del Valle COW/FCOW Phase 2 Investigation (OM-DFD-2024-018)
Document Type
NOE - Notice of Exemption
Received
Posted
6/6/2025
Document Description
Department of Water Resources Project Geology and Terracon Drilling will drill fifteen rock core borings at Del Valle Dam as part of the Phase 2 investigation into the stability of the Conservation Outlet Works (COW) and Flood Control Outlet Works (FCOW). Drilling will be done using a track-mounted drill rig placed by crane and truck-mounted drill rig. The carbide bit used for coring will be cooled by clear water circulated down the casing. Core samples will be logged and transport by a DWR Geologist. Select core holes may have oriented inclinometer casing or a piezometer installed upon completion. All work is within the DWR right-of-way.
Contact Information
Name
Janine Beck
Agency Name
Department of Water Resources
Job Title
Environmental Scientist
Contact Types
Lead/Public Agency / Parties Undertaking Project
Phone
Email
Name
Sara Lowry
Agency Name
Department of Water Resources
Job Title
Environmental Program Manager
Contact Types
Lead/Public Agency / Parties Undertaking Project
Phone
Email
Location
Coordinates
Cities
Livermore
Counties
Alameda
Regions
Northern California
Cross Streets
Arroyo Rd, Dam Access Rd
Other Location Info
Del Valle Dam Conservation Outlet Works (COW) and Flood Control Outlet Works (FCOW)
Notice of Exemption
Exempt Status
Categorical Exemption
Type, Section or Code
Class 6, Information Collection, Section No. 15306
Reasons for Exemption
This project is exempt because it involves data collection activities. This project will not result in impacts to special status species or habitat. Because this activity can be implemented without any significant environmental impacts, the Categorical Exemption Class 6 will be used for CEQA compliance.
County Clerk
Alameda
Attachments
Notice of Exemption
Disclaimer: The Governor’s Office of Land Use and Climate Innovation (LCI) accepts no responsibility for the content or accessibility of these documents. To obtain an attachment in a different format, please contact the lead agency at the contact information listed above. For more information, please visit LCI’s Accessibility Site.