Tyco says results of soil sampling at their Fire Technology Center support their claims that PFAS compounds have not been transported by air beyond the Marinette facility. The company has reported to the Wisconsin DNR that soil samples collected in September and October on the perimeter of the FTC contained less PFOS and PFOA than soil found in typical urban areas and are more similar to samples of soil taken from areas in North America where there are no known local sources of PFAS. They say these measurements underscore that PFOA and PFOS are found everywhere in the United States and further demonstrate that PFAS compounds are not being transported by air beyond the FTC. Additionally, Tyco also tested approximately 30 shallow soil samples immediately around the outdoor fire training area and test houses at the FTC. PFAS concentrations in these samples were also low, and they declined as the sampling moved away from locations where firefighting foam was historically tested.