Anaerobic reductive dechlorination (ARD) can be used to cost-effectively remediate chlorinated solvent sites. In ARD, microbial communities use substrates to sequentially degrade chlorinated solvents such as trichlorethylene (TCE). Depending on conditions at a site, remediation may involve adding substrates (biostimulation) and/or dechlorinating organisms (bioaugmentation). This presentation will discuss the biological and chemical principles of this technology and is geared toward remedial project managers. Key considerations for site specific application will be covered. In addition, case studies will provide examples of data from sites displaying ARD as well as sites with poor performance or insufficient data. This webinar is a result of Recommendation 9 of EPA's Superfund Task Force, which encourages the Superfund program to "utilize state-of-the-art technologies to expedite cleanup." Actions under this recommendation include expanding the use of new remediation technologies and approaches to address contaminated sites. https://www.epa.gov/superfund/superfund-task-force-public-participation-opportunities#webinar To view this archive online or download the slides associated with this seminar, please visit http://www.clu-in.org/conf/tio/ChlorSolvBio_111418/