Airport PFAS Information

PFAS Information Page

Welcome to the Per- and polyfluoroalkyl substances (PFAS) information page for the Dane County Regional Airport (DCRA). Here you will find information regarding PFAS and DCRA's ongoing efforts related to investigation, mitigation and remediation. This page is will help answer your questions regarding PFAS at DCRA and let you know of any upcoming public meetings. PFAS is a problem that airports and cities across the nation are working to resolve. DCRA and Dane County are committed to working with its partners on the local, state, regional and national levels to develop sound policies and apply the best science to the challenge of removing PFAS from the environment.  

Below is a video presentation created by Dane County and DCRA consultant Mead & Hunt explaining PFAS history, testing and mitigation. The presentation highlights the Dane County Regional Airport, the historical use of PFAS, and the investigation and remediation process. All work plans and testing results are submitted to the Wisconsin Department of Natural Resources (WDNR). They can be found on their Bureau for Remediation and Redevelopment Tracking System (BRRTS) website:

BRRTS Case Numbers
02-13-581254 – WANG-115TH FIGHTER WING
07-13-586274 – DANE CNTY REGIONAL AIRPORT (FedEx Construction)


12/15/20 - The second phase of storm water sampling results and the fire training area sampling results have been posted to the BRRTS website under the case numbers 02-13-584472 and 02-13-583366. Responsible parties are currently collaborating with the Wisconsin DNR and Mead & Hunt on next steps.

10/7/20 - Submitted questions from 8/19/20 - 9/2/20 and the responses have been posted to this web page. You can find the PDF document below the FAQ section. 

10/6/20 - Questions submitted from 8/19/20 - 9/2/20 are still under review and responses will be posted as soon as they are complete. 

9/3/20 - Thank you to all that submitted questions. The questions submission form is now closed. We anticipate having the questions and responses posted to the FAQ section the week of September 14th.  

8/19/20 - Linked at the bottom of the web page is a public question submission form. Click "Submit a Question" and fill out the form. We will be accepting questions on PFAS at DCRA from 8/19/20 to 9/2/20. Please keep your questions specific and related to PFAS at DCRA so we can provide accurate responses. Review the information provided on this page to see if your question has already been answered. Submitted questions and the respective responses will be added to the FAQ section below. 

DCRA Video Presentation

DCRA Informational Document (PDF)

Additional Resources 

US Environmental Protection Agency (EPA) PFAS page -

Interstate Technology Regulatory Council (ITRC) -

CDC PFAS Factsheet -

Agency for Toxic Substances and Disease Registry -

US Food & Drug Administration PFAS page -

Wisconsin Department of Natural Resources

Wisconsin Department of Health Services -

Public Health Madison & Dane County -

City of Madison - Madison Water Utility -


Q: Why does the DCRA still use firefighting foam with PFAS? When will DCRA stop using it?
 The Federal Aviation Administration (FAA) regulations continue to legally mandate that airports use a firefighting agent containing PFAS known as Aqueous-Film-Forming Foam (AFFF) for real-life emergencies. FAA believes AFFF is the most effective chemical available to quickly extinguish aircraft fires and save lives. Due to AFFF’s environmental impact, Congress directed the FAA to change its regulations and allow airports to use alternative foam by October 2021.

Q: Do training exercises with the firefighting foams containing PFAS still happen at the airport?
No. FAA requires yearly testing of the Aircraft Rescue & Firefighting (ARFF) vehicle fire systems. This test is to ensure that the fire system is producing the correct mixture of foam and water. Testing the system is an integral part of keeping ARFF vehicles in optimal condition for emergency response. In 2019, the FAA created an exemption to this rule, allowing ARFF agencies to use testing equipment that does not require dispensing the foam. The Wisconsin Air National Guard (WI ANG) provides ARFF services to DCRA, and currently uses this equipment. Before this exception, AFFF was contained and disposed of safely when these tests occurred. There were also two historical burn pits at the airport that have not been used for multiple years. The period and use of these burn pits are currently being investigated. 

Q: Who used the fire training areas over the years?
This question is currently being investigated. It is generally known that various firefighting organizations in the Dane County area used the burn pits for training.

Q: Are the fire training areas a source of PFAS contamination?
We don’t know at this time. Investigation of the soils and groundwater in the area of the former burn pits is currently underway. Also, developing an understanding of the historical use of the burn pits, including the extent to which PFAS-based foam was sprayed in the fire pits, will assist in answering this question.  

Q: Was the DCRA cell phone lot constructed over the Darwin Street fire training area?
The evidence to date indicates the answer is no. The County of Dane (County) and its partners are currently investigating the Darwin Street fire training area, which is located near the cell phone lot.

Q: Has the County completed all of the testing and sampling?
 No. Further sampling and other investigation processes are planned and ongoing to refine our understanding of the PFAS sources to continue developing mitigation cleanup strategies. These plans include investigation of the historical fire training areas and further investigation of the stormwater system.

Q: Does all of the testing need to be completed before any mitigation happens?
No. The County is taking immediate action at one of the “hotspots” found in the sampling earlier this year with a pilot project to remove PFAS from the stormwater system. The pilot includes continuous testing to evaluate whether the technology being used is successful. If the results are promising, DCRA will expand the use of this new technology to other areas of the airport property where PFAS has been detected.
Q: Is the state working to create legal standards for PFOA and PFOS for groundwater, surface water, and drinking water? Where can I get information on that?
Yes. In October 2019, the Wisconsin Department of Natural Resources (WDNR) started the rulemaking process to develop legal standards for Wisconsin. The rulemaking process can take up to three years. You can get more information on how that process is going at the following WDNR websites: 
Q: Where can I find the current mitigation plans and sampling results from testing done so far at the Dane County Regional Airport?
You can find the stormwater investigation work plan and stormwater sampling results by going to the WDNR Bureau for Remediation and Redevelopment Tracking System (BRRTS) site and searching for investigation number 02-13-584472. The fire training areas’ work plan can be found by searching for investigation number 02-13-583366. To start the search, go the following WDNR website:  

Q: Where is the PFAS detected in the DCRA stormwater system originating?
We don’t know precisely at this time. Waters in the stormwater system have been sampled at various locations, and various concentrations have been detected. It will take additional sampling and likely further investigation to determine the origin of PFAS.

Q: PFAS contamination is discharging from the DCRA stormwater system into Starkweather Creek.  What is being done to stop that discharge?
DCRA has implimented a pilot project to capture and remove PFAS contamination at the location where the highest PFAS concentrations have been detected. The pilot project is implementing a technology called bioavailable absorbent media (“BAM”). Based on previous pilot tests using the technology in Michigan, the hope is that the BAM will significantly reduce the PFAS concentrations.

Q: Is the WI ANG working with the County to clean up the Airport site?
Yes. The County is working in cooperation with the WI ANG and City of Madison. The County is leading several concurrent activities to address the PFAS contamination discovered at and near the Airport and meeting regularly with the WDNR to develop plans to address PFAS at the Airport. 

Q: The Airport Joint Use Agreement (AJUA) is up for renewal. Can members of the public get a copy of the initial draft when it is prepared by the State and Federal Government and submitted to DCRA? 
No. It is in draft form and subject to further negotiations. Nonetheless, the public will get an opportunity to provide input about the AJUA. When received by DCRA, the draft AJUA will be a preliminary working document that will likely be subject to significant revisions by DCRA and the State and Federal Government. After DCRA and the State and Federal Government reach concurrence with respect to the contents of the AJUA, and well before it becomes a basis for the relationship between DCRA and the State and Federal Government, the document will be made available to the public and taken up during the public deliberations of the Dane County Airport Commission, two standing committees of the Dane County Board of Supervisors, and the County Board itself. Based on the foregoing, DCRA has determined that it will maintain its past practice of not releasing versions of the AJUA until discussions between DCRA and the State and Federal Government have resulted in a comprehensive document that is ready for consideration by the Dane County Board, its committees, and the Airport Commission.

Submitted PFAS Questions 8/19/20 - 9/2/20 (PDF)