Caldecott Tunnel Bores 1, 2, and 3 Rehabilitation and Ventilation Upgrade
Summary
SCH Number
2025010114
Lead Agency
California Department of Transportation, District 4
(DOT)
Document Title
Caldecott Tunnel Bores 1, 2, and 3 Rehabilitation and Ventilation Upgrade
Document Type
MND - Mitigated Negative Declaration
Received
Present Land Use
Hillside Residential and Mixed Housing Type Residential
Document Description
The California Department of Transportation (Caltrans) proposes the Caldecott Tunnel Bores 1, 2 and 3 Rehabilitation and Ventilation Upgrade Project (Project) to preserve the structural integrity of the tunnel, improve ventilation performance and fire-fighting operational response, and extend its service life. The project is located along State Route (SR-) 24 in Alameda and Contra Costa Counties (postmiles R5.80/R6.24 and R0.00/R0.60). The proposed improvements include ventilation system upgrades, tunnel, plenum and adit repairs, safety updates, and electrical system upgrades.
Contact Information
Name
Brycelyn Hendrix
Agency Name
California Department of Transportation
Job Title
Environmental Scientist
Contact Types
Lead/Public Agency / Project Applicant
Address
Phone
Location
Cities
Oakland, Orinda
Counties
Alameda, Contra Costa
Regions
Citywide, Countywide
Zip
94563
Total Acres
1.49
State Highways
24
Schools
Element School, Bentley School Hiller
Waterways
Lake Temescal
Notice of Completion
State Review Period Start
State Review Period End
State Reviewing Agencies
California Air Resources Board (ARB), California Department of Conservation (DOC), California Department of Fish and Wildlife, Bay Delta Region 3 (CDFW), California Department of Fish and Wildlife, Marin Region 7 (CDFW), California Department of Forestry and Fire Protection (CAL FIRE), California Department of Parks and Recreation, California Department of Toxic Substances Control (DTSC), California Department of Transportation, District 4 (DOT), California Department of Transportation, Division of Transportation Planning (DOT), California Department of Water Resources (DWR), California Energy Commission, California Fish and Game Commission (CDFGC), California Governor's Office of Emergency Services (OES), California Native American Heritage Commission (NAHC), California Natural Resources Agency, California Public Utilities Commission (CPUC), California Regional Water Quality Control Board, San Francisco Bay Region 2 (RWQCB), California State Coastal Conservancy (SCC), California State Lands Commission (SLC), California Transportation Commission (CATC), Delta Stewardship Council, Department of General Services (DGS), Office of Historic Preservation, San Francisco Bay Conservation and Development Commission (BCDC), State Water Resources Control Board, Division of Drinking Water, State Water Resources Control Board, Division of Drinking Water, District 4, State Water Resources Control Board, Division of Water Quality, State Water Resources Control Board, Division of Water Rights, State Water Resources Control Board, Divison of Financial Assistance, California Highway Patrol (CHP)
State Reviewing Agency Comments
California Highway Patrol (CHP)
Development Types
Transportation:Other (Caldecott Tunnel Rehabilitation)
Local Actions
n/a
Project Issues
Aesthetics, Air Quality, Biological Resources, Cultural Resources, Cumulative Effects, Geology/Soils, Hazards & Hazardous Materials, Hydrology/Water Quality, Land Use/Planning, Noise, Public Services, Transportation, Vegetation, Wetland/Riparian, Section 4(f)
Public Review Period Start
Public Review Period End
Attachments
Draft Environmental Document [Draft IS, NOI_NOA_Public notices, OPR Summary Form, Appx,]
Notice of Completion [NOC] Transmittal form
State Comment Letters [Comments from State Reviewing Agency(ies)]
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