Section 401 Water Quality Certification Public Notice

Olive Avenue Widening Project


The San Francisco Regional 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:

Olive Avenue Widening Project
City/County:

Novato, Marin County
Comment Period:

8/18/2025 - 9/7/2025
Project Description:

The City is planning to widen Olive Avenue between the SMART railroad and Redwood Boulevard to create safer intersection turn lanes and improve pedestrian safety on the north side of the road. The current Project design will require culverting Olive Ditch which is an intermittent stream/ditch that runs parallel to the north side of Olive Avenue. The Project also includes im provements to the current stormwater drainage system in the vicinity of Olive A venue and Railroad A venue to convey storm flows during 25-year storm events to help alleviate localized flooding and not exacerbate flooding along the southern side of the street.
Project Files:

Contact Staff for files
Staff Contact:

Kelsey Kruger
(510) 622-2357
Water Quality Control Board
1515 Clay Street, Ste 1400
Oakland, CA 94612