Highland Road Erosion Repair
Summary
SCH Number
2025050087
Public Agency
Contra Costa County
Document Title
Highland Road Erosion Repair
Document Type
NOE - Notice of Exemption
Received
Posted
5/2/2025
Document Description
The purpose of this project is to repair the road shoulder, guardrail, and embankment along the eastbound lane of Highland Road which was damaged by the 2023 winter storms. The embankment will be repaired by constructing an approximately 16-ft long soldier pile wall, restoring the existing shoulder and damaged roadway. In addition, the project will install rock slope protection and an overside drain to convey road runoff away from the embankment and into the Tassajara Creek tributary. Restoration of the inlet, outlet, and culvert may be necessary. Ground disturbance will occur and the maximum depth of excavation is anticipated to be approximately 35 feet for the soldier pile wall. Vegetation trimming and removal of one tree is anticipated. Appropriate best management practices including but not limited to erosion control such as hydroseeding temporarily disturbed areas and installing fiber rolls, storm drain inlet protection, will be implemented upon construction completion. Construction is anticipated to begin in 2026 and take approximately two months to complete. Real property transactions, including but not limited to, right-of-way acquisition and permanent and temporary easements, and utility relocations may be necessary in support of this project. Night or weekend work may be necessary and will be performed in accordance with local guidelines. Emergency vehicles will have access at all times.
Contact Information
Name
Syd Sotoodeh
Agency Name
Contra Costa County Department of Conservation and Development
Job Title
Senior Planner
Contact Types
Lead/Public Agency
Address
Phone
Name
Shravan Sundaram
Agency Name
Contra Costa County Public Works Department
Job Title
Environmental Analyst
Contact Types
Lead/Public Agency / Project Applicant / Parties Undertaking Project
Phone
Location
Coordinates
Cities
Unincorporated San Ramon
Counties
Contra Costa
Regions
Northern California, San Francisco Bay Area, Unincorporated
Cross Streets
Highland Road and Collier Canyon Road
Other Location Info
Highland Road, approximately 50 feet northwest of the T-junction of Highland Road and Collier Canyon Road, unincorporated Contra Costa County near the City of San Ramon
Notice of Exemption
Exempt Status
Categorical Exemption
Type, Section or Code
Article 19, Section 15301(c)
Reasons for Exemption
The project consists of the repair and reconstruction of an existing street and
associated embankment failure with no addition of travel lanes. Therefore, the project involves negligible or no expansion of existing use/capacity and is exempt pursuant to Article 19, Section 15301(c) of the
CEQA Guidelines.
Exempt Status
Categorical Exemption
Type, Section or Code
Article 19, 15302(c)
Reasons for Exemption
The project consists of the repair and reconstruction of an existing street and
associated embankment failure with no addition of travel lanes. Therefore, the project involves negligible or no expansion of existing use/capacity and is exempt pursuant to Article 19, Section 15302(c) of the
CEQA Guidelines.
County Clerk
Contra Costa
Attachments
Notice of Exemption
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