Section 401 Water Quality Certification Public Notice

Devlin Road/Soscol Ferry Road Roundabout Project


The San Francisco Region Water Quality Control Board is currently reviewing an application for the following project for water quality certification under Section 401 of the Clean Water Act. We encourage public comments on the proposed work, which will be considered in the decision on certification. You may submit comments on this project to the staff member below.


Project Name:

Devlin Road/Soscol Ferry Road Roundabout Project
City/County:

Napa County
Comment Period:

10/28/2022 - 11/18/2022
Project Description:

The existing Devlin Road/Soscol Ferry Road intersection is a heavily trafficked intersection especially during peak AM and PM hours. Most of the congestion is attributed to residents utilizing the interchange at State Route 29 and State Route 221 (Soscol Junction), which is directly to the east. Due to the proximity of the Devlin Road/Soscol Ferry Road intersection to the interchange and the existing congestion observed, the County is concerned about the efficiency and safety of the intersection. The primary objective of the project is to maximize the existing infrastructure to efficiently convey traffic safely through the interchange. Additionally, the project would seek to improve operations, reduce delay, and enhance mobility for all modes of transportation.
Project Files:

Contact Staff for files
Staff Contact:

Erin Fairley
(510) 622-2324
Water Quality Control Board
1515 Clay Street, Ste 1400
Oakland, CA 94612