This doesn’t surprise me at all, PFAS is in basically anything plastic/waterproofed. I worked on a contract for a company that took samples of the town drinking water, and when they started sampling for PFAS, the steps that they had to take to avoid compromising them were pretty crazy. They couldn’t wear waterproofed clothes/boots because they have PFAS in them. They couldn’t park the truck within 100ft of the well that they were sampling for the same reason.