The scientists also note that WHO did not disclose the names, affiliations, and potential conflicts-of-interest of those involved in the preparation or peer-review of the draft guidelines.
"Not only did we reduce PFAS concentrations by more than 99%, but we also applied it to the rinse water, reducing the airport's waste," says David Fleming, a founder of TRS.
The new standards require the investigation of the potential presence of these contaminants in soil at properties currently undergoing, or undertaking future, cleanup activities.
Slideshow: RemTEC and EC Summit show photographer Jon Phillips captures how attendees split their time between sessions and networking breaks on the show floor in Westminster, Colorado, on the last day of the show, Oct. 6.
Pilot-scale tests confirm the effectiveness of treatments for per- and polyfluoroalkyl substances, speakers say. But questions about prioritization, cost performance and comparisons linger.