EcoVac Services implemented SURFAC® and ISCO-EFR® at this site to remove SPH and reduce BTEX concentrations below the site’s CALs.
Russellville, Alabama
SPH-gasoline, BTEX
Gasoline SPH has been historically present in three monitor wells. A single SURFAC® application was implemented at the site to remove SPH from the wells. ISCO-EFR® was implemented to reduce BTEX concentrations in the wells to below CALs.
A single SURFAC® application successfully removed SPH from this site. ISCO-EFR® was implemented using Klozur® (activated sodium persulfate) which reduced BTEX concentrations to well below the site’s CALs.
The rail yard site in Nijmegen, Netherlands has been subject to contamination via leaks, spills, and filling losses of hydrocarbon fuels over the years. Despite previous remediation attempts there remained residual TPH contamination. Following a successful bench test, a full-scale remotely controlled injection unit was used for implementation of alkaline activated Klozur® persulfate. The reduction of the TPH levels achieved the remedial goals in both the bench and fieldwork.
The selected remedy, soil mixing using in situ chemical oxidation (ISCO) combined with in situ solidification and stabilization (ISS) was used to destroy contaminants while stabilizing soils
Site Closed Following a Single Application of Klozur® SP and Hydrated Lime.
The approach was designed to remove the lower molecular weight compounds, which are the more soluble and mobile fraction of the contamination, via chemical oxidation while cementing the remaining higher molecular weight fraction of the tar in place. The addition of cement was also intended to activate the Klozur SP by generating alkaline conditions, significantly improving the kinetics of the ISCO reactions.
Specialty Earth Sciences, LLC was contracted to remediate a site that was impacted by residual coal tar by utilizing chemical oxidation methodologies.
