Remediation Solution
Remediation Approach
Technology
Media Treated
Industry
Contaminant Type
Contaminant of Concern
Location
BTEX-contaminated groundwater at a former gas station in southern Nebraska required treatment across multiple depth intervals under complex hydraulic conditions. Plume distribution across variable geology required coordinated injection and extraction to achieve effective chemical contact with the contamination.
In-situ chemical oxidation using catalyzed sodium persulfate (18% solution, ~70 gallons per point) was injected into 42 grid-pattern DPT locations at depth-specific intervals of approximately 20 gallons per interval. Injection was coordinated with simultaneous vacuum extraction on adjacent wells. Residual PermeOx Plus oxygen release material was included to support ongoing bioremediation.
An 85% BTEX reduction was achieved in the most highly contaminated monitoring wells at the former gas station in southern Nebraska. The catalyzed sodium persulfate injection program—delivered through 42 grid-pattern DPT locations at depth-specific intervals—addressed contamination across the variable geology of the site. Simultaneous vacuum extraction on adjacent wells maintained hydraulic control throughout injection and enhanced treatment chemistry contact with the BTEX plume. Residual PermeOx Plus oxygen release material incorporated into the treatment zone continues to provide sustained dissolved oxygen to support ongoing natural bioremediation in the post-treatment monitoring period.
Superfund ISTR Under Strict Air Emission Limits
Bioremediation for PFAS
High-Profile ISTR of Historic Chemical Disposal Impacts
