We considered several alternatives to deal with groundwater issues, including the presence of the metals, lead, cadmium, arsenic, and antimony. Based on the site conditions and geology, as well as evaluations for performance, effectiveness, implementability, schedule and cost, we delivered a proposed remediation solution involving several innovative and proven technologies.
This proposed solution starts with a zero-valent iron (ZVI) funnel and gate permeable reactive barrier (PRB). Implementation involves digging a continuous trench across the path of the contaminated groundwater (gate) and filling that trench with reactive materials including ZVI, through which the groundwater must flow. Groundwater flow through the “gate” reduces the metal impurities in the groundwater. Laboratory column studies (tests using groundwater at the site with the ZVI) were performed by our team to show the effectiveness of this proposed solution.
Slurry walls will be installed to funnel the impacted groundwater towards the PRB. These underground “walls” will be built by digging trenches and filling the trenches with impermeable materials to funnel the impacted groundwater into the barrier or gate.