CRAWFORD COUNTY, Mich., (WPBN/WGTU) -- More testing for PFAS is being done in Crawford County this summer.
The Michigan Army National Guard held a townhall meeting Tuesday night to update Grayling residents on the ongoing PFAS investigation.
PFAS, a man-made chemical that can be harmful to animals and humans, was first discovered in Grayling in 2017.
An official with the Michigan Army National Guard said since then, thousands of tests have been done around Camp Grayling and Lake Margrethe.
Officials said they are in the remedial investigation process of the investigation, where they are defining the extent of contamination.
This process can take anywhere from three to 10 years.
"Once we have a good idea of exactly what we're dealing with then we can start looking at the feasibility study of, OK, now what can be done,” Michigan Army National Guard Environmental Manager Jonathan Edgerly said.
The Michigan Department of Environment, Great Lakes, and Energy, or EGLE, is conducting more tests at Lake Margrethe this week, and will be re-testing the water wells at Camp Grayling in July.