November 2000 – Alameda County voters approve a sales tax for a list of possible transportation improvements. A new link from the Coliseum BART station to the Oakland International Airport is included in this list. TransForm and other nonprofits begin working with BART on the project.
July 2001 – BART completes a draft of the Environmental Impact Statement on a new link from the Coliseum BART station to the Oakland International Airport. BART Proposes a train which would cost $200 million to build, and then $7.3 million annually to operate (by 2020). For comparison, the existing bus service would cost around $2 million to operate annually.
March 2002 – BART completes the final Environmental Impact Report. It finds that a train on it’s own dedicated track is the preferred option. The BART board votes to build it.