This case study reviews a former dry cleaner site in a small town in western Indiana, where tetrachloroethene (PCE) had spilled and migrated into groundwater, creating a dissolved-phase PCE plume 1,500 feet long and encompassing 340,000 square feet. Patriot Engineering, a leading Midwest environmental consulting firm, headquartered in Indianapolis, specified enhanced reductive dechlorination ERD as the most practical and economically viable method to effectively treat the large plume. Patriot’s strategy to achieve closure was to significantly reduce the PCE plume and then to demonstrate plume stability through post-remediation monitoring. By combining groundwater remediation technologies such as PlumeStop® Liquid Activated Carbon™ and 3-D Microemulsion® from REGENESIS with a highly efficient and costeffective remediation design, Patriot’s treatment approach has virtually eliminated the PCE plume, positioning the site for regulatory closure.

Main Street

Case study highlights:

  • Large plume with limited treatment access successfuly treated using sorption and enhanced reductive dechlorination (ERD) technologies from REGENESIS
  • PCE plume virtually eliminated
  • Seamless collaboration effort between teams involved resulted in pending regulatory closure