Benzene, toluene, ethylbenzene, and total xylenes (BTEX) posed significant challenge at IL site

Case study highlights

  • Size of contaminated groundwater plume reduced by 87% through extensive injection of ORC Advanced, applied using vertical and horizontal wells.
  • Total BTEX >62.5ppm (mg/l) concentrations were identified prior to site treatment.
  • Final round of ORC injections approved by Illinois EPA and LUST Program and is in-progress.

This site had been a carwash and retail gasoline station in an industrial-commercial area. During the removal of two (2) 6,000- gallon gasoline underground storage tanks (UST) and two (2) fuel dispensers, a gasoline release was reported to the Illinois Management Emergency Agency, based on impacted soil observed during the excavation. Contaminants for this gasoline release were Benzene, Toluene, Ethylbenzene, and total Xylenes (BTEX). The release resulted in groundwater contamination that encompassed the entire property, and extended slightly off-site, impacting three businesses. The area covered by the groundwater plume was approximately 1.5 acres. The size of the groundwater BTEX plume posed a significant challenge in site treatment.

Single application of ORC Advanced® results in 87% reduction of contaminated groundwater plume
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