Slip Out and Pavement Settlement Repair DO (EA 3X260)
Summary
SCH Number
2025060764
Public Agency
California Department of Transportation, District 4
(DOT)
Document Title
Slip Out and Pavement Settlement Repair DO (EA 3X260)
Document Type
NOE - Notice of Exemption
Received
Posted
6/17/2025
Document Description
Caltrans proposes to repair roadway settlement and caving from post mile 18.91 to 19.29 on Highway 1 in Marin County. The settlement and caving were caused by over-saturation of the embankment due to a series of excessive rain events during January 2025. The surface water and oversaturation caused the soils under and adjacent to the roadway to collapse, ultimately resulting in pavement settlement and a small slope failure at three locations in the project area. The scope of work includes repairing the damaged sections of roadway using compaction grouting, replacing the roadside ditch drainage infrastructure, and stabilizing the fallen slope using native soils.
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 Marin County
Counties
Marin
Regions
Northern California, San Francisco Bay Area
State Highways
Highway 1
Other Location Info
The project is located on Highway 1 from post mile 18.91 to 19.29 in Marin 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
Marin
Attachments
Notice of Exemption
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