Section 401 Water Quality Certification Public Notice

170 Redwood Dr. Emergency Slide Repair 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:

170 Redwood Dr. Emergency Slide Repair Project
City/County:

Woodacre, Unincorporated, Marin County
Comment Period:

4/24/2024 - 5/14/2024
Project Description:

In spring of 2023 the County began a design for a permanent repair funded by FEMA. The project has been expedited given that the road continues to be closed to residents and the slide continues to pose a hazard to the creek and to homes downstream and access for emergency and fire evacuation vehicles. A retaining wall has been designed and the County is now preparing to construct the project as soon as possible in Spring/Summer 2024, once the threat of erosion into the creek from winter rains has passed. A new culvert will be installed under the roadway, to transport flows from upslope areas, as a means to address the problem with a long-term solution.
Project Files:

Contact Staff for files
Staff Contact:

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