This report is a collection of abstracts summarizing 13 new case studies of site remediation applications prepared primarily by federal agencies. The case studies, collected under the auspices of the Federal Remediation Technologies Roundtable (Roundtable), were undertaken to document the results and lessons learned from technology applications. They will help establish benchmark data on cost and performance which should lead to greater confidence in the selection and use of innovative cleanup technologies. The Roundtable was created to exchange information on site remediation technologies, and to consider cooperative efforts that could lead to a greater application of innovative technologies. Roundtable member agencies, including the U.S. Environmental Protection Agency (EPA), U.S. Department of Defense, and U.S. Department of Energy, expect to complete many site remediation projects in the near future. These agencies recognize the importance of documenting the results of these efforts, and the benefits to be realized from greater coordination. The abstracts are organized by technology, and cover a variety of in situ and ex situ treatment technologies and some containment remedies. The abstracts and corresponding case study reports are available through the Roundtable web site, which contains a total of 374 remediation technology case studies (the 13 new case studies and 361 previously-published case studies). Appendix A to this report identifies the specific sites, technologies, contaminants, media, and year published for the 374 case studies. Abstracts, Volume 9, covers a wide variety of technologies, including full-scale remediations and large-scale field demonstrations of soil, groundwater, and sediment treatment technologies.