Body of News Release
Marin County, CA – The Marin County Flood Control & Water Conservation District announced that the proposed removal of Building Bridge 2 (BB2) in downtown San Anselmo cannot proceed until all federally required downstream mitigation measures are fully completed and approved as part of the project’s federal review process.
In November 2025, the Federal Emergency Management Agency (FEMA) provided written confirmation stating that the District must complete downstream mitigation measures — and secure property‑owner approval — before FEMA will grant a Conditional Letter of Map Revision (CLOMR) and/or Letter of Map Revision (LOMR) related to the removal of BB2. Without an approved CLOMR, construction on the project cannot proceed.
The District is sending certified letters to each affected property owner to formally notify them of FEMA’s requirements and to continue discussion about potential mitigation measures. The letters explain that certain downstream properties may experience increases in base flood elevation and that mitigation measures must be implemented to address those impacts. The correspondence also invites property owners to meet with District staff, ask questions, and further review mitigation options specific to their properties, such as raising mechanical and electrical equipment in crawlspace areas. The District has reached out to all property owners with required mitigation and has already met with several to explain mitigations specific to each property.
“This step is a critical path for the project and where our collective focus is right now,” said Christopher Blunk, Director of the Marin County Department of Public Works. “However, FEMA has made it clear that we must secure unanimous approval for downstream mitigations. We are committed to working collaboratively with individual property owners to explore mitigation solutions and address questions and concerns.”
The BB2 removal project remains active. While removing BB2 continues to offer substantial benefits for the community, including reducing flood risk for hundreds of homes and businesses upstream of BB2, FEMA’s requirements mean that if even one affected property owner chooses not to pursue mitigation, the project may be unable to move forward.
Updates will be posted on the project webpage.