FHWA memos suggest narrow tunnel is adequate.
FHWA says bigger tunnel is needed than environmentalists claim
Supes upset with tunnel study. (Includes full text of FHWA's response to tunnel study request!)
Feds: Study tunnel option
Federal Highways has a response to the County Supervisors' letter about the tunnel study.
The Federal Highway Administration has asked Caltrans to check out a tunnel. These three newspapers have articles on it: Half Moon Bay Review, The Mercury News, and The Chronicle.
Here's a response and information request based on the Caltrans/FHWA FEIS. It details many concerns about the document.
Here's another citizen response to the Caltrans/FHWA FEIS. It details many concerns about the document.