• Certificate of Completion Awarded through New York State’s Brownfield Cleanup Program
• Combined remedy approach using ISCO and colloidal activated carbon to successfully treat CVOC and PFAS contaminants
• Greater than 90% reductions in mass flux achieved at property boundary

This case study reviews a legacy brownfield site in New York that was found to have high concentrations of chlorinated volatile organic compounds (CVOCs), petroleum hydrocarbons (PHCs), 1,4-dioxane, and PFAS (per- and polyfluoroalkyl substances). To address this contamination, a combined remedy was implemented: PersulfOx® was applied to reduce contaminant mass at the source, while a PlumeStop® barrier was installed to prevent residual migration beyond the site boundary. This approach resulted in a 90% reduction in groundwater contaminant concentrations and significantly lowered the mass flux at the property boundary. The success of the remediation effort earned the site a Certificate of Completion through New York State’s Brownfield Cleanup Program, paving the way for environmentally responsible redevelopment in this commercially valuable area