This paper describes a community-based learning (CBL) project involving the economic redevelopment of two environmentally contaminated former industrial sites or "brownfields." The study was conducted over four semesters by several economics classes and involved assembling a database, measuring the impact of the brownfields on residential property values, proposing a redevelopment plan, and estimating the benefits of the environmental remediation and economic redevelopment of the sites. This CBL project provided economics students with a valuable opportunity to engage in a real-world economic analysis of a significant local issue.