Wellsite Remediation in Crossfield, Alberta | In-Situ Chemical Oxidation (ISCO) Case Study

Case Studies

Wellsite Remediation in Crossfield, Alberta | In-Situ Chemical Oxidation

Project Details:

Location:

Wellsite - Crossfield, Alberta

Site:

Oil and Gas Site (Flare Pit)

Date:

2009

2017

Present

Contaminant of Concern:

BTEX, C6-C16

Impacted Media and Volume:

80,000 m3 impacted soil and groundwater

Project Tasks:

Detailed site assessment, Hydrogeological characterization, Remedial planning, Detail design, Procurement, Blending and Field applications

View Project Images & Details →

The Problem:

Former flare pit area overlying shallow fractured bedrock. Condensate (BTEX) contamination dissolved in groundwater covering 21,000 m2.

The Approach:

Conduct detailed geological/hydrogeological investigation to identify fracture pathways and contaminate transport.

In-situ chemical oxidation (ISCO) program based on 15 meter injection radius of influence. Establish health and safety protocol and site logistics for handling oxidizer.

Installed 90 injection wells, and injected over 100,000 litres of blended 17% EHP (enhanced hydrogen peroxide) oxidant. Blending is site specific following TRIUM’s ChemOx® process.

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The Results:

Plume area reduction by >90%
Highly cost effective compared to traditional remedial options, with minimal carbon footprint
Excellent reductions noted with injection distributions exceeding planned performance
Follow-up program for completion of impacts in source area

Pipeline Release Remediation in Central Alberta: A Risk-Based ISCO Case Study

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.

Revolutionizing Site Characterization with AISCT® | AI-Powered Soil & Water Analysis

AISCT® revolutionizes site characterization with rapid, 20-minute soil and water analysis. This portable technology reduces lab dependence, enhances decision-making with real-time results, and ensures accurate volume estimations. It streamlines remediation, minimizes landfilling, and boosts confidence in project outcomes.

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