Proceedings of sessions of Geo-Congress '98, held in Boston, Massachusetts, October 18-21, 1998. Sponsored by the Geo-Institute of ASCE.This Geotechnical Special Publication contains 20 papers that describe the tools and methods employed in risk-based corrective action. Case histories with an emphasis on brownfields restoration provide illustrative examples.GSP 82 provides practioners with an introduction to the concepts that are employed as well as lessons learned.