Wildcat Canyon Road Slope Failure Repair, Project #: WO6266, CP#: 24-13
Summary
SCH Number
2024101296
Public Agency
Contra Costa County
Document Title
Wildcat Canyon Road Slope Failure Repair, Project #: WO6266, CP#: 24-13
Document Type
NOE - Notice of Exemption
Received
Posted
10/30/2024
Document Description
The purpose of this project is to repair an embankment failure and reconstruct the roadway to restore two-way traffic to a stretch of Wildcat Canyon Road that was damaged during the 2023 winter storm events. The road is currently closed to vehicular traffic.
The embankment will be repaired by constructing a soldier pile wall and reconstructing a storm drain culvert that crosses under the roadway. The cantilever soldier pile wall will be approximately 180-feet long. The top of the wall will be
protected with a cable railing system. The wall requires steel piles set in 36-inch diameter, 35-foot-deep drilled holes. Excavations up to approximately 20 feet will be required to install soldier pile wall lagging. No pile impact-driving will occur. The backfill will be comprised of lightweight cellular concrete. Approximately 245 linear feet of roadway will be reconstructed. Guard railing will be installed. The roadway thermoplastic striping will conform with the existing striping. The damaged cross culvert will be replaced with a 30-inch diameter pipe on the same alignment as the existing culvert. Roadway surface storm runoff will be contained with an asphalt concrete dike placed under the guard railing. Equipment staging will likely occur adjacent to the slide, within the currently closed roadway.
Appropriate Best Management Practices (BMPs) including but not limited to erosion control such as fiber rolls, and hydroseeding temporarily disturbed areas will be implemented during construction. Approximately seven trees will be removed. Real property transactions, including right-of-way acquisition and permanent and temporary easements, will be necessary in support of this project. Utility relocations may be needed. The project is anticipated to start in summer of 2025 and take approximately 80 days to complete. No night or weekend work is anticipated.
Contact Information
Name
Sandeep Kajla
Agency Name
Contra Costa County Public Works Department
Job Title
Environmental Analyst
Contact Types
Project Applicant
Phone
Name
Syd Sotoodeh
Agency Name
Contra Costa County Department of Conservation and Development
Job Title
Senior Planner
Contact Types
Lead/Public Agency
Address
Phone
Location
Coordinates
Cities
Unincorporated Area near Orinda
Counties
Contra Costa
Regions
Unincorporated
Other Location Info
Wildcat Canyon Road approximately 500 feet west of San Pablo Dam Road near the City of Orinda, APN: 267-030-021
Notice of Exemption
Exempt Status
Categorical Exemption
Type, Section or Code
15301(c) and 15302(c)
Reasons for Exemption
The activity consists of the repair and reconstruction of an existing street and associated embankment failure, involving negligible expansion of use beyond that previously existing pursuant to Article 19, Section 15301(c) and 15302(c) of the CEQA Guidelines.
County Clerk
Contra Costa
Attachments
Notice of Exemption
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