Achieving remediation site closures can be challenging, time-consuming, and costly. Treatment train approaches or combined remedies are often a practical means to address difficult remediation sites. The optimal approach to soil and groundwater clean-up often requires the use of multiple technologies either sequentially or concurrently to achieve the most cost-effective approach throughout the entire life cycle of cleanup at a project site.
Carus is excited to announce our upcoming webinar series, Combined Remedies. We are fortunate to bring to you five industry experts presenting on various combined remedy topics throughout the upcoming months. Join us for one, two, or all of our 30-minute webinars.
June 14, 2018
Site #1: An industrial property utilized chlorinated solvents for equipment maintenance from the 1950’s to 1970’s. Past operations resulted in multiple source areas and it is suspected that chlorinated solvents were discharged to drain pipes into a former settling pond. TCE concentrations have been detected in groundwater at a maximum concentration of 730 mg/L and in soils up to 6,800 ug/g. Soil blending was performed utilizing chemical oxidation (sodium permanganate) to treat the unsaturated TCE impacts exceeding an average 1,100 ug/g. BOS 100® was injected into the saturated zone in a barrier configuration to limit the mass flux from the source area and prevent contamination from leaving the subject property.
Site #3: A buried drum of TCE was discovered during site redevelopment. In situ chemical oxidation via potassium permanganate was used to successfully treat the source area. Downgradient of the source a permeable reactive barrier was installed via direct push injection in order to decrease the mass flux of the plume encroaching into a wetlands. Data will be presented from the source remediation as well as from the monitoring wells up and downgradient of the barrier.