The primary purpose of the study was to examine some of the benefits achieved by completing constructing to clean up the sites on the NPL and examine the uses of sites after cleanup and the factors that affect these uses. In additon, the study lays a foundation for future studies that may evaluate other economic benefits not addressed here, such as changes in property values. The study looks at a relatively narrow set of accomplishments, and is not a comprehensive analysis of all the benefits of the Superfund program. For the study, the analysis was directed at the 228 sites on the CCL as of March 1994. Benefits examined included benefits to human health and the environment such as protecting drinking water aquifers and the economic and noneconomic beneficial use of properties.