To: BOARD OF SUPERVISORS
From: Planning and Building Services
Meeting Date: April 8, 2025
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Department Contact: |
Julia Krog |
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707-234-6650 |
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Department Contact: |
John Burkes |
Phone: |
707-234-6650 |
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Item Type: Consent Agenda |
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Time Allocated for Item: N/A |
Agenda Title:
title
Adoption of Resolution Authorizing the Processing of a Consolidated Emergency Coastal Development Permit and Follow-up Coastal Development Permit, LCP_2025-0002, by the California Coastal Commission, for The California Department of Transportation (Caltrans) to Construct a Beach Revetment and Associated Infrastructure at the Westport Emergency Landslide Repair on State Route 1
End
Recommended Action/Motion:
recommendation
Adopt Resolution authorizing the processing of a Consolidated Emergency Coastal Development Permit and Follow-up Coastal Development Permit, LCP_2025-0002, by the California Coastal Commission, for The California Department of Transportation (Caltrans) to Construct a Beach Revetment and associated infrastructure at the Westport Emergency Landslide Repair on State Route 1; and authorize Chair to sign same.
End
Previous Board/Board Committee Actions:
On December 19, 2016, the Board of Supervisors received an informational report on the issuance of Emergency Coastal Development Permit EM_2016-0006, which authorized remedial measures to maintain roadway access along State Route 1.
Summary of Request:
The Westport landslide is located in Mendocino County near Westport, between postmiles 75.0 and 76.5 on State Route 1. This area has undergone a series of emergency repairs dating back to 2005. This emergency project was initiated under Governor’s proclamation 23-3. On March 1, 2023, following a period of heavy rainfall and accelerated coastal erosion, the area began to show severe roadway structure distress, along with distress to the existing Soldier Pile Ground Anchor (SPGA) walls. Work began shortly after the storm event and has been ongoing. The current stress and damage to the facility represents an imminent threat to the public. Work is deemed to be the minimum necessary to maintain State Route 1.
Several nested slides throughout the site have developed, along with additional movement of the larger landslide complex. Work has been ongoing, including installation of a SPGA, roadway profile correction, and geotechnical investigations to help inform the minimum repairs necessary along with potential long-term solutions. Work also entailed developing a structural shore protection analysis to help inform the beach revetment portion of this emergency.
In addition to the SPGA walls, two other critical components of work that define the minimum necessary to address the immediate threat to the highway and associated facilities include a coastal rock revetment at the toe of the slope to help minimize coastal erosion and mass wasting on the bluff face, along with a dewatering strategy to reduce hydrostatic load of the landslide. Geotechnical work to inform the short term and long-term dewatering strategy is ongoing, and the rock revetment at the toe of the slope is scheduled to begin in April of 2025. This three-part strategy is deemed to be the minimum necessary to maintain this section of State Route 1.
The portions of the project within the County’s jurisdiction include portions of the staging and access roads, portions of the temporary k-rail placement, portions of the revetment as it moves up the bluff face, and portions of the proposed mitigation site at Westport Union Landing.
The project area includes lands within the jurisdiction of both the County of Mendocino and the California Coastal Commission. California Public Resources Code Section 30601.3 allows the processing of a Consolidated Emergency Coastal Development Permit and follow-up Coastal Development Permit when the local government and Coastal Commission both consent to the consolidation, provided public participation is not substantially impaired. In this case, the processing of a Consolidated Coastal Development Permit would eventually require that the Coastal Commission hold a public hearing, which would afford the same degree of public participation as the hearing procedures in Mendocino County.
Alternative Action/Motion:
Do not adopt the resolution and require the processing of an Emergency Coastal Development Permit and follow-up Coastal Development Permit by the County.
Strategic Plan Priority Designation: An Effective County Government
Supervisorial District: District 4
Vote Requirement: Majority
Supplemental Information Available Online At: N/A
Fiscal Details:
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source of funding: N/A |
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current f/y cost: N/A |
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budget clarification: N/A |
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annual recurring cost: N/A |
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budgeted in current f/y (if no, please describe): N/A |
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revenue agreement: N/A |
AGREEMENT/RESOLUTION/ORDINANCE APPROVED BY COUNTY COUNSEL: Yes
CEO Liaison: Steve Dunnicliff, Deputy CEO
CEO Review: Yes
CEO Comments:
FOR COB USE ONLY
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Executed By: Atlas Pearson, Senior Deputy Clerk |
Final Status: Adopted |
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Date: April 9, 2025 |
Executed Item Type: Resolution |
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Number: 25-061 |
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