Liberty Industrial Finishing Superfund Site, Farmingdale, NY

E & E and team member AMO Environmental Decisions, (AMO) were retained by the Liberty Industrial Finishing Site Qualified Settlement Trust to provide a wide range of environmental and engineering services for the Liberty Industrial Finishing Superfund site—a 30-acre parcel of land in the village of Farmingdale, Nassau County, NY, that formerly housed an aircraft parts manufacturer.  Groundwater beneath the site consists of two plumes, contaminated with volatile organic compounds and metals that are affecting two aquifers:  the Upper Glacial Aquifer and the Magothy Aquifer.  

E & E developed multi-faceted solutions to the challenges that the site presented including soils remediation, groundwater treatment system upgrades, recharge galleries, and pond remediation.  Soils remediation was completed to meet residential soil cleanup standards established by the Environmental Protection Agency (EPA) to allow for future development/use of the site as a community park.  During remediation activities, E & E performed a detailed, post-excavation sampling program to identify areas where the first cut of excavation established compliance with the cleanup goals, thereby helping to minimize the need for additional excavation and overcuts.  As a result, the remediation was completed below the original excavation volume and cost estimates.  The project scope also included upgrades to the existing groundwater treatment system (GTS).  We performed life-cycle design analyses, conducted treatability studies, and modeled the two groundwater plumes to design a treatment system that could be modified based on present and future system needs.  We also helped to remediate a pond in the Massapequa Preserve area of the Liberty Superfund site through dredging and disposal of contaminated sediments.  The client was extremely pleased with E & E’s efforts and noted that “the design plan developing a treatment that will adjust to changing groundwater conditions without being over-designed was executed skillfully.”