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CASE STUDY: WHEN IN-SITU TECHNIQUES FAIL
French, K. | RemTech 2019: Remediation Technologies Symposium, 16-18 October, Banff, 57 slides, 2019

Soil and groundwater at a former fueling station in Canada were contaminated with petroleum hydrocarbons (PHCs). While risk management did not require remediation of the source area, they did require controlling the PHC plume to prevent continued offsite migration. Two permeable reactive barriers (PRBs) containing colloidal activated carbon and oxygen-releasing material failed to control plume migration. A Remedial Design Characterization was conducted to better understand the PHC-contaminated zones. After collecting additional site data, the material used in the second PRB was changed to Trap and Treat BOS200®. After installation, contamination decreased to below the target level, and the plume was effectively contained. https://www.esaa.org/wp-content/uploads/2019/10/19-French2.pdf



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