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.
Official Correspondence
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Gogebic-Iron County Airport is a county-owned, public-use airport located at E5560 Airport Road. In September 2020, Michigan Department of Transportation (MDOT) awarded the airport a grant to investigate the potential for PFAS contamination associated with Aqueous Film Forming Foam (AFFF) used at the airport. Aircraft rescue and firefighting personnel at the airport historically performed equipment testing at one known location, which involved discharge of small quantities of AFFF to perform required equipment calibration. In November 2020 LimnoTech was contracted by the airport and began Phase I of the investigation.
Groundwater flow direction is to the north/northwest. Mud Creek runs along the northwest side of the airport property. Sixmile Creek is to the northeast and discharges to the Black River east of the airport.
Content posted July 2021.
EGLE, MDHHS, and the Western UP Health Department have evaluated local well records and have developed a residential well sampling plan. EGLE has sampled 29 nearby residential wells. Additional residential wells will be sampled if determined necessary as data is received.
Gogebic-Iron County Airport submitted the Phase I Investigation report. EGLE and MDOT staff have reviewed the report. The airport will submit the proposed Phase II plan for EGLE and MDOT to review and approve.
|
Type of Sample |
Date Sampled (or range) |
Number of Sample Results Received |
Number of Samples above Criteria* |
|---|---|---|---|
| Groundwater Monitoring Wells | November 2020 | 3 | 1 |
| Surface Water | November 2020 - April 2021 | 8 | 1 |
| Residential Drinking Water Wells | April 2021 - June 2021 | 29 | 1 |
*Residential well and groundwater monitoring well results are compared to EGLE Part 201 criteria for 7 PFAS compounds effective 12/21/2020: PFOS (16 ppt), PFOA (8 ppt), PFNA (6 ppt), PFHxS (51 ppt), PFHxA (400,000 ppt), PFBS (420 ppt), and HFPO-DA (370 ppt).
*Surface water samples are compared to Rule 57 non-drinking water values of 12 ppt for PFOS and 12,000 ppt for PFOA.