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This case study reviews four orphan underground storage tanks (USTs) that were discovered at a former gas station site slated for redevelopment in a Southern Indiana town. Since the site was scheduled for redevelopment, it was necessary to eliminate future cost and disruption and demonstrate plume stability and Monitored Natural Attenuation (MNA) conditions.

Case study highlights:

  • PetroFix rapidly reduces PHC contaminants to achieve closure goals and avoid future disruption and cost exposure
  • EnviroForensics, an Indianapolis-based environmental consulting firm expert in developing site closure strategies, was contracted by the town to pursue regulatory closure
  • PetroFix treatment eliminated the need for costly groundwater monitoring and unnecessary time and disruption to document plume stability

EnviroForensics was contracted by the town to pursue regulatory closure. Since the site was scheduled for redevelopment, it was necessary to eliminate future cost and disruption and demonstrate plume stability and Monitored Natural Attenuation (MNA) conditions. EnviroForensics decided to treat these low-level, residual impacts by injecting PetroFix® into the underlying groundwater. Following completion of the application design using PetroFix Design Assistant online software at www.petrofix.com/design, Enviroforensics mobilized to the site and completed the application in July 2019.