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Former helicopter fuel storage area overlying saturated shallow sands. Fuel (BTEX) contamination within the soil and dissolved in groundwater. Due to shallow groundwater, depths of impacts, and coarse-grained lithology, a winter injection program was developed.
Conducted a pilot test at the Site prior to full scale to ensure adequate distribution and determine the most appropriate radius of influence (ROI). Full scale in-situ chemical oxidation (ISCO) program was then conducted based on a 5 meter injection radius of influence. Establish health and safety protocol and site logistics for handling oxidizer.
Installed 42 injection wells and injected 60,000 litres of blended 15% EHP (enhanced hydrogen peroxide) oxidant. Blending is site specific following TRIUM’s ChemOx® process.
An in-situ chemical oxidation (ISCO) remediation was conducted at a former wellsite sump in Barrhead, Alberta to address BTEX, F1, and F2 contamination in 645 m³ of impacted soil and 3,000 m³ of impacted groundwater. Due to shallow groundwater and a saturated silty sand lithology, excavation was limited, requiring targeted in-situ treatment. A 0.75-meter injection radius was used for soil treatment via 40 injection points, delivering 28,000 liters of 10-15% MFR (modified Fenton’s reagent) over five days, while groundwater remediation involved 13 wells, injecting 60,000 litres over two events spanning 20 days. Using TRIUM’s TriOx process, the project achieved a >90% contaminant reduction, meeting regulatory guidelines within a short treatment timeframe.
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