Gasoline with Injectate

This former gasoline service station presented a challenging subsurface environment characterized by interlayered silty sands and clays from approximately 4 to 30 feet below grade. Groundwater was encountered at a depth of roughly 15 feet, with a 10-foot thick target treatment interval containing gasoline-related contaminants.

RCC designed and implemented an in-situ chemical oxidation (ISCO) program using two complementary oxidant products to maximize treatment effectiveness. Injection was performed using advanced delivery technology capable of increasing the radius of influence and improving contact with contaminants throughout the target zone. Injections were strategically placed at multiple depths to address both vertical and lateral variability within the formation.

Field data confirmed that the oxidant achieved a treatment radius of approximately 18 feet from individual injection points—significantly increasing subsurface contact and accelerating remediation. Post-injection monitoring shows continued breakdown of petroleum hydrocarbons as the oxidants remain active within the treatment zone.

This project demonstrates RCC’s ability to tailor remedial strategies to complex geological conditions, maximize reagent coverage, and achieve meaningful contaminant reduction within active groundwater systems.