The Economic Development Admin. (EDA) Reauthorization Act of 2004 (P.L. 108-373) included a requirement that the GAO evaluate grants made by EDA for the economic development of brownfield sites. More than 450,000 brownfield sites -- properties where redevelopment or reuse may be complicated by real or perceived environmental contamination -- are scattered across the U.S. This report discusses specifics of grants made by EDA at brownfield sites, including: (1) the types, extent, & amount of EDA funds used for remediation activities; (2) the environmental standards & agencies involved; & (3) the economic development activities, standards, & impacts. Includes recommendations. Illustrations.