Treatment of a former manufacturing site contaminated with a mixture of chlorinated solvent VOCs and petroleum VOCs in the vadose soil zones and shallow groundwater
Cullman, AL
PCE, TCE, vinyl chloride, cis-1,2-DCE, tetrachloroethene, xylenes, ethylbenzene
Initial assessment identified a 4,500 square foot source was contaminated from approximately 2 to 12 feet with a maximum of 180ppm of TCE, 6.6 ppm of DCE and lesser concentrations of vinyl chloride, tetrachloroethene, xylenes, ethylbenzene, and related VOCs. Due to the high clay content and other site factors, lime active Klozur® Persulfate was chosen to provide the most effective oxidation treatment.
Approximately 1,500 tons of impacted soils were treated in place. The results of confirmatory sampling indicate VOC concentrations were reduced to non-detect levels above and below the water table.
XDD designed and implemented full-scale treatment of VOC’s and PAH’s using Alkaline Activated Klozur SP at the Mattoon Former Manufactured Gas Plant (MGP). XDD used a combination of permanent injection wells installed along with temporary direct push injection wells to implement the ISCO treatment.
Surfactant-enhanced ISCO was successfully implemented at a site in Queens, NY contaminated with coal tar repurposed from a nearby MGP in a roofing manufacturing process. This process destroyed >90% of total targeted contaminants achieving the groundwater clean up objective.
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.
Treatment of PCE and Other Chlorinated Solvents Using Klozur® Persulfate
In situ soil mixing was the delivery tool for lime activated Klozur® persulfate for the in situ chemical oxidation of chlorobenzene contamination.
