Large-Scale Excavation Project
ENTACT is performing excavation of approximately 960,000 cubic yards of chromium contaminated soils and other materials, which are classified as hazardous waste. To enable removal activities to occur, ENTACT designed, constructed, and is currently operating a vacuum well point and deep well groundwater extraction system to lower the groundwater elevation and water content of waste materials as much as practicable. Additional activities include installation and abandonment of observation wells, inclinometers, and piezometers, as well as protection and abandonment of several existing monitoring wells. Site restoration will include the supply, placing, and compacting of approximately 880,000 cubic yards of imported backfill.

NPL Site
ENTACT completed remedial action activities that included management and consolidation of all on-site debris; decontamination and demolition of remaining smelter buildings; asbestos abatement; UST removal; regrading 1.3 million cubic yards of slag and soil (slag piles as large as 8.5 acres and up to 50 feet tall); removal of impacted soil and sediment from the river riparian areas; and construction of a 185-acre soil cover system over the entire site. Activities were completed to prepare the property for mixed-use redevelopment.