Section 401 Water Quality Certification Public Notice

State Route 116-121 Intersection Improvement Project, Caltrans EA 04-3G900, Project No. 0415005571


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:

State Route 116-121 Intersection Improvement Project, Caltrans EA 04-3G900, Project No. 0415005571
City/County:

Sonoma County
Comment Period:

6/17/2022 - 7/8/2022
Project Description:

The purpose of this Project is to improve operations for all modes of transportation at a high volume, four-way stop where State Route (SR) 116 and SR 121 intersect, consequently reducing congestion and the occurrence of accidents for all modes of transportation, while maintaining and enhancing where possible access to adjacent properties and parking for public transit and carpool users.
Project Files:

Contact Staff for files
Staff Contact:

Qi Yan
(510) 622-2449
Water Quality Control Board
1515 Clay Street, Ste 1400
Oakland, CA 94612