After failing to win voter approval in 2021, Marin County is again considering a tax to support replacing a floodwall that protects nearly 600 homes in San Rafael. The rapidly-deteriorating timber-reinforced berm made of compacted dirt and wooden boards in the Santa Venetia area now is proposed to be replaced with a composite sheet pile floodwall. The project cost has escalated from a $6 million estimate in 2021 to the latest calculation of $25 million.