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 pipeline release site in Central Alberta faced residual petroleum hydrocarbon contamination (BTEX, F1, F2) that could not be fully treated with a multi-phase extraction system. Due to site lithology, a risk-based in-situ chemical oxidation (ISCO) approach was implemented with a 1.5 to 2.5 meter injection radius, installing 12 injection wells and injecting 6,500 liters of 12% EHP (enhanced hydrogen peroxide) followed by 3,700 liters of 15% sodium persulfate using TRIUM’s ChemOx® process. The treatment successfully removed all residual NAPL, fully remediated the plume area, and exceeded performance expectations within a short timeframe.