Remediation Solution
Remediation Approach
Technology
Media Treated
Industry
Contaminant Type
Contaminant of Concern
Location
DRO and PCP-contaminated soil at a former creosote facility in central Minnesota required treatment across two separate treatment areas: Area 1 (approximately 316 tons of silty sand) and Area 4 (approximately 340 tons of organic-rich silt). PCP concentrations required reduction below the 120 mg/kg threshold for Minnesota Subtitle D landfill disposal qualification.
Ex-situ soil mixing was performed using an excavator to systematically displace, treat, and re-mix contaminated soils. Area 1 received 5,200 gallons of 17% hydrogen peroxide Fenton’s Reagent; Area 4 received 6,000 lbs of lime-catalyzed sodium persulfate—each chemistry selected to address the specific matrix and contaminant characteristics of each treatment zone.
PCP concentrations in both treatment areas were reduced below the 120 mg/kg disposal threshold required for Minnesota Subtitle D landfill qualification. Treated soils from Area 1 (approximately 316 tons of silty sand) and Area 4 (approximately 340 tons of organic-rich silt) both met the requirements for disposal at a Minnesota Subtitle D landfill. Area 1 was treated with 5,200 gallons of 17% hydrogen peroxide Fenton’s Reagent, and Area 4 was treated with 6,000 lbs of lime-catalyzed sodium persulfate—each chemistry selected based on the specific matrix and contaminant characteristics of the respective treatment zone. The project demonstrated that tailoring treatment chemistry to each area’s soil composition and contamination profile is a key factor in achieving consistent disposal qualification results.
Superfund ISTR Under Strict Air Emission Limits
Bioremediation for PFAS
High-Profile ISTR of Historic Chemical Disposal Impacts
