Case Study:

Abandoned Oil Wellsite Remediation in Central Alberta | Ex-Situ Chemical Oxidation

Abandoned Oil wellsite – Central Alberta Ex-Situ Chemical Oxidation

Project Details:

Location:

Abandoned Oil wellsite – Central Alberta

Site:

Oil Well-Site (Drilling Sump)

Date:

2019
to
to
Present

Contaminant of Concern:

Toluene

Impacted Media and Volume:

100 m3 impacted subsurface soil

Project Tasks:

Blending and Field applications

The Problem:

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).

The Approach:

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.

The Results:

  • Minimal disturbance on the access road
  • Minimal disturbance to the wellsite as treatment was localized to stockpiled soil adjacent to the excavation
  • Remediation of soil in the former sump to below lab detection and within guidelines
  • All soil excavated from former sump backfilled into the excavation
Contact Trium Environmental

Speak with Our Experts

Contact Us

More Case Studies