Tim Psomas, chairman emeritus of the firm that bears his surname, is throwing his considerable weight behind greening the nation's infrastructure. As the first chairman of the Institute for Sustainable Infrastructure, Psomas helped pioneer the Envision rating system, which aims to do for civil works what the U.S. Green Building Council's LEED rating system has done for buildings.
"Tim Psomas has led the fledgling institute from a start-up organization to a mature and growing presence in municipal, county, state and federal infrastructure circles, both in North America and internationally," says William Bertera, president and CEO of the Institute for Sustainable Infrastructure (ISI).