CHICAGO -- Building an airport on Chicago's southeast side would cost $17.4 billion -- at least $8.4 billion more than four other possible sites, according to a preliminary financial feasibility analysis presented to an Illinois-Indiana site selection committee Wednesday.

Mayor Richard Daley of Chicago is pushing for the so-called Lake Calumet site over the other four sites being considered by the bi-state Policy Committee for the Site Selection of a Supplemental Airport in the Chicago Area. The committee is made up of Chicago, Indiana, and Illinois officials.

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