TO: Board of Supervisors
FROM: Steven Lederer - Director of Public Works
REPORT BY: James Reese - Associate Engineer
SUBJECT: Approval of Plans and Specifications for the Ridgecrest Drive MPM 0.10 Roadway Slide Repair, RDS 25-26.
RECOMMENDATION
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Approve plans and specifications and authorize advertisement for sealed bids and opening of the bids at a time and location to be published by the Director of Public Works pursuant to Section 20150.8 of the Public Contracting Code for the Ridgecrest Drive Slide Repair Project, RDS 25-26, which is near 50 Ridgecrest Drive. (No Fiscal Impact; Discretionary)
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BACKGROUND
In early February 2025, a severe storm caused extensive damage across Napa County, including a major landslide on Ridgecrest Drive. In response, the County Board ratified a local emergency proclamation on February 18, 2025, and allocated $1,500,000 for the Ridgecrest Drive Slide Repair Project.
County crews responded immediately, working overnight to stabilize the affected roadway. On February 7, 2025, Public Works staff contacted ADKO Engineering, Inc.-previously selected through a qualifications-based selection process-to visit the site and on March 11, 2025 the Board approved a contract to prepare the Plans, Specifications, and Estimate (PS&E) for the project.
The proposed repair involves constructing a retaining wall supported by vertical steel piles and concrete lagging between the piles. The project site is located at Mile Post 0.10 on Ridgecrest Drive, within the Circle Oaks subdivision in rural Napa County.
With the PS&E now complete, staff is requesting authorization to advertise the project for construction bids. Once bids are received and reviewed, staff will return to the Board with a recommendation for awarding the construction contract.
Requested Action:
Approve plans and specifications and authorize advertisement for sealed bids and opening of the bids at a time and location to be published by the Director of Public Works pursuant to Section 20150.8 of the Public Contracting Code for the Ridgecrest Drive Slide Repair Project MPM 0.10, RDS 25-26.
FISCAL & STRATEGIC PLAN IMPACT
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Is there a Fiscal Impact? |
Yes |
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Is it currently budgeted? |
Yes |
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Where is it budgeted? |
Ridgecrest Slide Repair, Project 25035. |
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Is it Mandatory or Discretionary? |
Discretionary |
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Discretionary Justification: |
Repair is needed to keep road open. |
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Is the general fund affected? |
No |
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Future fiscal impact: |
It is anticipated that the contractor will complete the construction in Fiscal Year 2025-26. Minimal maintenance of the retaining wall. |
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Consequences if not approved: |
The slide will expand, and the road will become unpassable. |
ENVIRONMENTAL IMPACT
ENVIRONMENTAL DETERMINATION: Consideration and possible adoption of a Categorical Exemption Class 1: It has been determined that this type of project does not have a significant effect on the environment and is exempt from the California Environmental Quality Act. [See Class 1 (“Existing Facilities”) which may be found in the guidelines for the implementation of the California Environmental Quality Act at 14 CCR §15301; see also Napa County’s Local Procedures for Implementing the California Environmental Quality Act, Appendix B.]