ges/PDFs/BuildingsLand/D94-27_GBBL.pdf (accessed November 2008). This assumes that $100,000 in IAQ improvements are invested. Damiano, Leonard, and David Dougan. The Big Carrots: Productivity and Health. Ebtron, Inc., 2003. http://vnvw. automatedbuildings.cominews/aproa/articlesiebtronfebtron.hun. (accessed