TO: Board of Supervisors
FROM: Steve Lederer - Director of Public Works
REPORT BY: Roberto De La Torre Real - Junior Engineer
SUBJECT: Approval of Plans and Specifications and Authorization to Advertise for Bids for the “White Sulphur Spring Rd Slide Repair”, RDS 26-37.
RECOMMENDATION
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Approve the Plans and Specifications for the “White Sulphur Spring Rd Slide Repair”, RDS 26-37; and authorization to advertise for sealed bids and opening of the bids at a time, date, and location to be published by the Director of Public Works pursuant to Section 20150.8 of the Public Contract Code. (No Fiscal Impact)
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BACKGROUND
Damage occurred at 3260 White Sulphur Spring Road from the storm events that occurred in Napa County in November of 2025. The failure at 3260 White Sulphur Spring Rd consists of an upslope failure on the west side of the roadway, where a hillside previously impacted by Napa County wildfires slid and damaged a portion of the road. The slide area is approximately 130 linear feet in length, and the preferred repair method is to install a 150-foot-long and 10-foot-high soldier pile retaining wall. The affected roadway will also be raised and repaved to restore the asphalt concrete surface to pre-slide conditions.
On March 10, 2026, the Board of Supervisors authorized creation of the “White Sulphur Spring Rd Slide” project 26027 and a budget transfer of $446,922 was allocated for the project using the Roads Operating Fund (Fund 2040, Sub-Division 2040000). Of this amount, $366,922 was allocated for design services and $80,000 for staff time.
Fiscal Year 2026-27 recommended budget will include $7 million for all 2025 November Storm Project construction from the release of designation for fiscal uncertainty. It will be budgeted in RDS01 “November 2025 Storm Roads CIP.” As each project moves forward, budget will be reallocated from RDS01 to specific projects.
The Engineer’s Estimate for the White Sulphur Spring Rd Slide Repair project is $600,000. The Plans and Specifications are complete and ready for approval by the Board of Supervisors, which are available to view on the <https://www.napacounty.gov/1607/Current-Projects> website. County staff will return to the Board of Supervisors to present a detailed project budget based on the lowest responsible bid and to request authorization to award.
Requested Actions:
1. Approve Plans and Specifications for the “White Sulphur Spring Rd Slide Repair”, RDS 26-37 and authorize to advertise for sealed bids.
FISCAL IMPACT
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Is there a Fiscal Impact? |
No |
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Is it currently budgeted? |
No |
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Is it Mandatory or Discretionary? |
Discretionary |
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Discretionary Justification: |
Repairs are necessary to prevent further damage and ensure public safety. |
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Is the general fund affected? |
No |
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Future fiscal impact: |
Future fiscal impact may require mitigation planting and routine maintenance to clear slide material behind the soldier pile retaining wall. |
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Consequences if not approved: |
If not approved, the soldier pile retaining wall cannot be constructed and slide material will continue to cover the roadway. |
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Strategic Initiative: |
Build healthy, connected communities. |
ENVIRONMENTAL IMPACT
ENVIRONMENTAL DETERMINATION: Consideration and possible adoption of a Categorical Exemption Section 15301 Class 1 - Existing Facilities and Section 15302 Class 2 - Replacement or Reconstruction: 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”) and Class 2 (“Replacement or Reconstruction”) which may be found in the guidelines for the implementation of the California Environmental Quality Act of 14 CCR §15301; see also Napa County’s Local Procedures for Implementing the California Environmental Quality Act Appendix B.]