Resources

EFS was contracted by a client to provide in-situ chemical reduction (ISCR) treatment services for a site in Ohio. The design remedy consisted of the application of EHC® - a reagent consisting of controlled release carbon, zero-valent iron (ZVI), and nutrients for stimulating the chemical reduction process of organic compounds within groundwater – combined with emulsified ZVI (), and the application of microbes containing dehalococcoides (KB-1®). This project was performed to promote the reduction of concentrations of chlorinated compounds within groundwater as a result of historical releases from a former dry-cleaning operation at the property. As part of this work [...]

EFS was contracted to complete civil improvements to a three-acre soil cover at a former private trucking operations facility in West Virginia in order to reduce infiltration of precipitation into a Solid Waste Management Unit.  Field activities began in October 2012 and were completed in November 2012.  EFS prepared a site-specific Health and Safety Plan and Work Plan.  The scope of work included establishing perimeter barriers, installing erosion and sediment and control measures, removing fencing, streamline piping, and a concrete slab, performing pre and post material placement surveys, and the stripping of approximately 80,000 square feet of topsoil. The scope [...]

EFS was contracted by a client to provide soil mixing services for a site in Wisconsin. Prior remediation efforts consisting of a groundwater pump and treat system operated at the site until 2004. An amendment to the Record of Decision (ROD) modified the treatment strategy to excavation or in-situ treatment of hot spot areas in order to meet the remedial action objectives for the site in a shorter time period.  In–situ treatment was selected as the remedy and focused on five specific “hot spot” source areas containing elevated concentrations of trichloroethylene (TCE) in soil and groundwater. Initial site activities included [...]

EFS was contracted by a client to provide Operation & Maintenance activities for an existing 31-well groundwater remediation system at a metal manufacturing facility located in Ohio. Groundwater at the site is impacted with VOCs, chromium, and hexavalent chromium contaminants in groundwater. EFS was initially contracted to review the existing groundwater treatment system and provide recommendations for optimizing the system. EFS provides monthly operation and maintenance activities including; collecting NPDES samples, recording totalizer flow meter readings from each recovery well, inspecting and cleaning air stripper flower filter screens, cleaning the ISCO bubbler flow meter, inspecting and measuring the diameter of [...]