Our project scope included designing the remediation of a Connecticut-based site contaminated with per- and polyfluoroalkyl substances (PFAS). The target site was contaminated due to the historical application of Aqueous Film Forming Foam (AFFF) used during firefighter training activities. Approximately 40 gallons of AFFF concentrate were mixed with 1,300 gallons of water and applied over the eastern and southern fields of the site in 2014. Since 2014, PFAS-contaminated soil has remained untreated on the site. Left unchecked, contaminated soil and groundwater will continue to impact the nearby brook and potentially contaminate neighboring drinking water wells. Remedial alternatives including excavation, soil capping, and in-situ soil stabilization (ISS) were considered, and the most feasible alternative for the final design was recommended.