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Former admixed drilling sump at an abandoned wellsite. Soil impacts were from 1 meter below grade (mbg) to 3 mbg, consisting primarily of toluene.
Access road to the site was partially reclaimed, which limited the remedial options available (ie/ limiting truck transport of contaminants).
Impacted soils were excavated and an Allu bucket was used to homogenize soils and break up large soil clumps. The blended hydrogen peroxide was applied directly to the soil while the excavator was flipping and kneading the soil. A total of 5,000 litres of blended 20% EHP (enhanced hydrogen peroxide) oxidant was applied on the soil for treatment.
A closure-based in-situ chemical oxidation (ISCO) program was implemented at an operational power generation plant in Northwestern Alberta to remediate F2 and vinyl chloride contamination in 300 m³ of impacted soil. Site constraints, including existing infrastructure and a lack of groundwater, required a 0.75-meter injection radius for increased contact certainty. Over five days, 37 injection points were advanced, delivering 32,800 liters of 12% EHP (enhanced hydrogen peroxide) using TRIUM’s ChemOx® process. The treatment successfully met applicable soil quality guidelines within a short timeframe, with no disruptions to facility operations.
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