Wellsite – Fort St. John, British Columbia

Located in Fort St. John, British Columbia, this ongoing project, initiated on 2019, addresses contamination at a former helicopter fuel storage area. The site, impacted by BTEX, LEPH, HEPH, and PAHs, required remediation of approximately 2,700 m³ of contaminated soil and groundwater. The key challenge was addressing fuel contamination within the soil and dissolved in groundwater under conditions of shallow groundwater, coarse-grained lithology, and cold weather, which necessitated a winter injection program.

To tackle these challenges, Trium Environmental developed a comprehensive and site-specific plan, beginning with a pilot test to ensure adequate oxidant distribution and to determine the optimal 5-meter injection radius of influence. A full-scale in-situ chemical oxidation (ISCO) program was then designed and implemented. Health and safety protocols and site logistics for oxidizer handling were meticulously established. The team installed 42 injection wells and injected 60,000 liters of a 15% EHP (enhanced hydrogen peroxide) oxidant blend, leveraging Trium’s proprietary ChemOx® process to achieve site-specific blending and application.

The results of this approach have been exceptional. The project achieved a significant reduction in non-aqueous phase liquids (NAPL) in the groundwater, along with a notable shrinkage of the overall contaminant plume. The remediation was completed in a highly cost-effective and expedited timeframe, with injection distributions exceeding planned performance. This project showcases Trium Environmental’s ability to innovate and deliver effective, tailored solutions for complex environmental challenges, ensuring long-term site sustainability.