Closure Moves Forward at Former
Dry Cleaner Site

Case study highlights:

• Remediation achieved site cleanup objectives and site closure from IDEM requested
• Multi-faceted remedial approach implemented to address soil, groundwater and vapor intrusion
• 3-D Microemulsion outperformed EVO in pilot study, demonstrating enhanced capability in rapidly reducing PCE

A former drycleaners site in Central Indiana employed a comprehensive remediation strategy to address on and offsite soil and groundwater contamination caused by chlorinated solvents, primarily perchloroethylene (PCE) and its byproducts. Using an enhanced reductive dichlorination (ERD) approach, the team strategically applied 3-D Microemulsion®, Bio-Dechlor INOCULUM® Plus (BDI), and a soluble ferrous iron substrate to the groundwater plume to facilitate enhanced reductive dechlorination of these contaminants, transforming them into harmless byproducts. This proven treatment substantially reduced the groundwater plume, leaving only lowlevel residual contamination that is effectively managed through institutional controls. Following these results, a site closure request under the state’s Voluntary Remediation Program (VRP) is currently under review by the Indiana Department of Environmental Management (IDEM).