Tom Lantos Tunnel Fire Department Communication Device Replacement DDO (EA 04-4X150)
Summary
SCH Number
2025090128
Public Agency
California Department of Transportation, District 4
(DOT)
Document Title
Tom Lantos Tunnel Fire Department Communication Device Replacement DDO (EA 04-4X150)
Document Type
NOE - Notice of Exemption
Received
Posted
9/4/2025
Document Description
Caltrans proposes replacing the existing fire department communication devices in the Tom Lantos Tunnel and Operation and Maintenance Center (OMC) located on Highway 1 from post mile 38.0 to 40.4. The Office of the State Fire Marshal (OSFM) has identified deficiencies in Fire Department communication and radio coverage. The Tom Lantos Tunnel (Devil’s Slide Tunnel) consists of twin 30-foot-wide horseshoe-shaped bores, each approximately 4,300 feet in length. Each bore is classified as “Category D” under the National Fire Protection Association (NFPA) 502 standard for Road Tunnels, Bridges, and Other Limited Access Highways. The old equipment is non-supported very high frequency (VHF) radio equipment and must be upgraded. The project will replace existing Radio Frequency (RF) emitting ultra-high frequency/very high frequency (UHF/VHF) devices inside the tunnel, OMC, equipment chambers, and cross passages to provide Fire Department communications supported radio coverage. Traffic control will be required during construction activities.
Contact Information
Name
Juliane Smith
Agency Name
Caltrans
Job Title
Senior Environmental Scientist (NEPA/CEQA Specialist)
Contact Types
Lead/Public Agency / Project Applicant / Parties Undertaking Project
Address
Phone
Email
Location
Cities
Unincorporated San Mateo County
Counties
San Mateo
Regions
Northern California, San Francisco Bay Area
State Highways
HWY-1
Other Location Info
The project is located on Highway 1 from post mile 38.0 to 40.4 in San Mateo County.
Notice of Exemption
Exempt Status
Categorical Exemption
Type, Section or Code
PRC 21084; 14 CCR 15301 Class 1(d)
Reasons for Exemption
Class 1(d) Existing Facilities. The project is not anticipated to result in any environmental impacts. The project contains a number of standardized project measures which are employed on most, if not all, Caltrans projects and were not developed in response to any specific environmental impacts resulting from the project.
County Clerk
San Mateo
Attachments
Notice of Exemption
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