In November 2020, we announced an integrated permanent source-control approach to remediate the PFAS-impacted groundwater, as well as the affected soil at Tyco’s Fire Technology Center. We have since made tremendous progress in implementation of each of the related plans submitted to and approved by the Wisconsin Department of Natural Resources (WDNR). Tyco appreciates DNR’s efficient and effective work in reviewing and approving the lengthy, detailed documents we submitted related to these major and important remediation projects.
In May 2021, WDNR approved our plan for a Groundwater Extraction & Treatment System (GETS) designed to focus on the area containing 95% of the PFAS that came from historic operations at Tyco’s Fire Technology Center (FTC).
The GETS extracts groundwater containing PFAS before it upwells into Ditch B, transports the groundwater via underground pipes to a treatment system that removes PFAS from the groundwater, and delivers the treated water, which meets or exceeds DNR standards, into Ditch B. The GETS is under construction and is scheduled to begin start-up operations in the first half of 2022. (See GETS fact sheet)
Per our plan approved by DNR in June 2021, soil with aggregated PFAS is being excavated and removed from the FTC. 95% percent of the stored soil from the construction of the Advanced Research & Testing Facility (See ARTF fact sheet) construction has been loaded into rail containers and transported out of state for disposal at a permitted facility. Soil with aggregated PFAS at 5 locations in the FTC’s Outdoor Testing Area will be excavated starting spring 2022 and transported out of state for disposal at a permitted facility. (See Soil fact sheet)
These plans are based on almost 4 years of investigating soil, groundwater, surface water and air to find out how PFAS moved from the FTC and where it went. This included gathering over 10,000 data points that were submitted to the WDNR in a 1,000-page report in May 2020. We also implemented interim solutions as quickly as possible to address PFAS from the FTC in drinking and surface water while we identified long-term solutions.