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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Houghton County Memorial Airport is located at 23810 Airpark Boulevard.On September 8, 2020, the Airport was awarded a grant to investigate potential PFAS contamination associated with Aqueous Film Forming Foam (AFFF).The first phase of the investigation conducted by LimnoTech, the consultant for the Airport, focused on two areas where AFFF was known to have been used by the airport for fire suppression equipment testing, and included collecting soil, groundwater, and surface water samples.
Groundwater flow is expected to be towards the south, towards the Torch Lake watershed. Gooseneck and Quincy Creeks, along with other various seasonal and/or intermittent ditches or drains convey surface water away from the Airport.
Content posted September 2021.
There are no residential wells that have been identified by the state or local health department for sampling. The Airport is supplied by municipal water.
EGLE is in the process of working with the Airport and consultant on the scope of the next phase of the investigation which will include additional sampling. Resampling of 3 groundwater monitoring wells will be conducted as a result of possible cross-contamination during the first round.
|
Type of Sample |
Date Sampled |
Number of Sample |
Number of Samples |
|---|---|---|---|
| Groundwater Monitoring Wells |
June 2021 | 5 | 4 |
| Surface Water | June 2021 | 6 | 6 |
*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.