Laboratories Offering Home Testing
PFAS MCLs and Drinking Water
Statewide Testing Initiative
PFAS Sites and Areas of Interest
There are two major classes of firefighting foam: Class A and Class B. Class B is also called Aqueous film forming foam (AFFF) and is usually created using PFAS. It is a highly effective foam used for fighting high-hazard flammable liquid fires, like gasoline, oil, and jet fuel.
Wastewater Treatment Plants / Industrial Pretreatment Program
Official Correspondence
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Please contact the Site Lead for the most up-to-date status of this site.
William Grossett, U.S. EPA RCRA Corrective Action Project Manager, Grosset.William@epa.gov or 312-886-7159
The General Motors (GM) Flint Assembly, located at G-3100 Van Slyke Road, is an active automotive manufacturing and assembling facility that has been in operation since the 1940’s. Remedial activities for other contaminants at this site have occurred in the past. A PFAS investigation was conducted as the result of a site-wide evaluation prepared in 2021 determining that AFFF products were historically used at the facility, and this fire suppression product is known to contain PFAS compounds. Groundwater monitoring wells were installed at various locations across the campus.
The site was sampled for PFAS, and the highest result was 230 ppt PFOA (compared to Michigan’s Drinking Water Maximum Contaminant Level (MCL) of 8 ppt). Additional groundwater monitoring occurred the spring of 2024 to further delineate the plume. This facility is performing environmental investigation and subsequent remediation efforts under U.S. EPA’s RCRA Corrective Action program. The results from GM’s RCRA Facility Investigation (RFI) indicate that groundwater flow is discontinuous across the site. Groundwater movement has shown localized radial flow away from certain investigation areas at the facility with off-site migration noted. Carman Creek is located roughly 0.35 miles east, and Swartz Creek is located roughly 0.3 miles north, across I-69.
Content posted September 2024.
See an aerial view of the entire site.
EGLE, DHHS and local health department staff evaluated nearby residential wells, and due to the lack of on-site groundwater wells in the deep aquifer, and the fact that there are numerous private residential wells getting water from the deep aquifer, sampling of residential wells near this site is planned for the summer of 2024.
GM continues to investigate their shallow groundwater for PFAS impacts to fully delineate their extent of presence as part of their RCRA Corrective Action obligations.