Trancas Road Repair Project - RDS25-35
Summary
SCH Number
2025090564
Public Agency
Napa County
Document Title
Trancas Road Repair Project - RDS25-35
Document Type
NOE - Notice of Exemption
Received
Posted
9/12/2025
Document Description
Trancas Street was paved in 2001 with a 0.2-ft overlay and in 2012 with a 0.15-ft overlay. Although asphalt thickness was not considered for its impact to the floodplain in previous projects, the County proposes a 2.5-inch mill and fill and various 3-inch digouts, to correct pavement deficiencies, provide for a 15-20 year design life, and prevent impacts the floodplain elevation. The southern branch of the "Y" intersection of Trancas Street with Monticello Road and SR-121, will undergo a 1.5-inch mill and fill as the existing asphalt section over Bridge No. 21C0051, crossing Milliken Creek, is approximately 1.5-inches. Trancas Street will be restriped to match existing striping, but will include an extended left turn pocket (an additional 100-ft) for eastbound traffic making a left onto Silverado Trail. The extension to the left turn lane pocket will not modify the existing footprint of the road and all work will occur within the existing travel lanes and shoulder areas. The project will incorporate best management practices and no removal of vegetation (outside of typical roadway clearing and grubbing practices) is proposed as part of this project.
As Trancas Street is within the Napa River floodway, the upcoming paving project will maintain pre-project elevations to prevent a rise in the floodway elevation. As such, t.he County has filed a Floodplain Management Permit Application with The Planning, Building, and Environmental Services Department. Due to floodplain restrictions that limit the pavement thickness on Trancas Street, the County will provide a mill and fill treatment to the asphalt.
Contact Information
Name
Dana Eleanor Morrison
Agency Name
County of Napa
Job Title
Supervising Planner
Contact Types
Lead/Public Agency
Phone
Name
Sydney Barclay
Agency Name
Napa County Public Works Department
Job Title
Assistant Engineer
Contact Types
Parties Undertaking Project
Phone
Location
Coordinates
Cities
Napa, unincorporated area
Counties
Napa
Regions
Unincorporated
Cross Streets
Trancas Street and Jefferson, and Trancas and SR - 121
Zip
94558
Total Acres
2
Jobs
1
Parcel #
039-270-020-000; 039-270-021-000; 052-010-021-000; 052-010-020-000
State Highways
Highway 29 and Highway 121
Railways
None
Airports
None
Schools
McPherson, Napa High, Valley Oak High, New Tech, Kolbe, Vichy
Waterways
Napa River, Miliken Creek, Sarco Creek and Hagen Creek
Township
06N
Range
04W
Section
35
Base
MDM
Other Location Info
Project is located on public right of way located between the parcel noted in the parcel number section. Project is a joint effort between the City of Napa and County of Napa to pave Trancas Street from Jefferson Street to State Route 121.
Notice of Exemption
Exempt Status
Categorical Exemption
Type, Section or Code
Section 15301 Class 1-Existing Facilities and Section 15302 Class 2-Replacement or Reconstruction
Reasons for Exemption
Since this a repair project of existing facilities that will not include new disturbance
areas, a Biological Reconnaissance Survey and a Cultural Resource Survey will not be prepared for this project. Pursuant to Sections 15022(a)(1)(C) and 15300.4 of the State CEQA Guidelines, the Napa County Board of Supervisors have adopted
implementation procedures, identifying specific projects that would be categorically exempt from established CEQA Guidelines. The proposed improvements would be considered Categorically Exempt from CEQA pursuant to Section 15301 Class 1-Existing Facilities, which includes the operation and repair of existing public or private structures or facilities involving negligible or no expansion of existing of former use, and is further exempt under Appendix B of the Napa County's Local Procedures for implementing the California Quality Act - Class 1 (1 )(h) - Existing Facilities, which includes reconstructing, resurfacing and/or seal coating of pavement, paving existing unpaved shoulders, widening the paved roadway by less than 8 feet or adding up to 4 foot wide unpaved shoulders, and modifying to improve existing roadside safety features. The proposed improvements would also be considered Categorically Exempt pursuant to Section 15302, Class 2- Replacement or Reconstruction, which consists of replacement or reconstruction of existing structures and facilities where the new structure will be located on the same site as the structure replaced and will have substantially the same purpose and capacity as the structure replaced. A key consideration in the appropriateness of using these Categorical Exemptions is whether the project would be located on the same site, have substantially the same purpose and involves negligible or no expansion of an existing use. In terms of negligible expansion, the proposed project will take place within the existing roadway or shoulder areas and does not include significant expansions beyond existing conditions. The proposed project would repair and improve existing roads - increasing public safety. Therefore, it has been determined that the proposed project qualifies for a Class 1 and Class 2 Categorical Exemption and has no reasonable possibility of having a significant effect on the environment. The site of the development is not in an environmentally sensitive area and is not on any of the lists of hazardous waste sites enumerated under Government Code Section 65962.5.
County Clerk
Napa
Attachments
Notice of Exemption
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