In a report two years ago, for example, EPA science advisers wrote that equivalent methods may produce results that are higher or lower than the reference method measurements. That can lead to ...

Many laboratories measure PFAS in a variety of different matrices where the sample preparation stage can often be the time ...

EPA notes that reliable baseline measurements of plastics and other ... This includes, for example, utilizing the Solid Waste Infrastructure for Recycling (SWIFR) grant program to support ...

and publish some sample results online. They also provide bottled water, filtration systems and connections to municipal systems where PFOS and PFOA measure over 70 ppt. The new EPA limits ...

The Environmental Protection Agency (EPA) will require states to ... “That is an example of a very basic access control measure that was not taken,” Travers said, adding that there have ...

DuPont's own measurements found only 1,650 ppm being released from the tank, significantly less than what was measured by the EPA inspector’s hand-held monitoring device. But the DuPont ...

Now, the EPA is working to develop better tools and methods to sample hard-to-track toxins ... rolled-up tape measure. The team created a grid, dropping the tiles about every six feet.

According to EPA ... for example, from warehouses storing sterilized products that off-gas into the atmosphere. The agency also says it is conducting research to better understand and measure ...