Grayling Army Airfield, Grayling, Crawford County
Updated: March 11, 2020
Grayling Army Airfield is a 923-acre area owned by the United States Army.
- On February 10-21, 202, AECOM sampled Phase III RI monitoring wells.
- On February 20, 2020, a Camp Grayling Restoration Advisory Board (RAB) meeting was held. Progress updates were given by DMVA, EGLE and DHHS. Recent and future RAB outreach was discussed and the final RAB brochure was released.
- EGLE will continue to monitor new residential sampling requests and call residents to set up sampling dates and times.
- During March 16-31, 2020, AECOM will conduct the next quarterly sampling event of groundwater monitoring wells. AECOM will not be conducting residential well sampling at this time.
- DHHS plans to resample all residential wells in summer 2020. DHHS will be contacting residents.
Residential Well Testing/Alternate Water Information
- 315 households have been provided filters by District Health Department #10.
- All residential well testing reflected on this report has been conducted by EGLE.
- Representatives from Department of the Army and Camp Grayling met August 23 with congressional staff, state representatives, Michigan regulators and homeowners impacted by the release of PFOA and PFOA. The Army and Army National Guard will continue to explore more effective interim actions and remain committed to meeting with municipal leaders on a monthly basis, as well as keeping the community informed of the progress.
Upcoming Community Engagement
- The next Camp Grayling RAB Meeting will be held on February 20, 2020 from 10 AM to Noon at Grayling Charter Township Offices, 2090 Viking Way, Grayling. The meeting will be open to the public.
Sampling: PFOS and PFOA Only
Type of Sample
Number of Samples
Number of Results Received
Number of Non-detects
Number Between Non-detect and standard*
Number of > Standard
|Drinking Water (Residential, Type I & II)
Mar 11, 2020
Mar 11, 2020
*Groundwater results are compared to the MDEQ Part 201 Criteria of 70 ppt PFOS+PFOA.
*Residential well results are compared to the USEPA Lifetime Health Advisory Level of 70 ppt PFOS+PFOA.
- Other PFAS analytes were detected in samples. There are no federal or state standards for these analytes.
- All sample counts and activities reflect “off-base” sampling efforts only.
- Sample results in the above table are from EGLE and Michigan National Guard combined.
The Camp Grayling environmental staff regularly monitor a number of environmental factors at the camp and airfield to ensure safety, compliance with state and federal regulations, and to proactively detect and remedy potential problems. The most recent proactive measure was to test water samples for PFAS. A few of the samples detected PFOA+PFOS at levels above the United States Environmental Protection Agency (USEPA) Lifetime Health Advisory (LHA).
As of the week of March 9, 2020:
725 private wells have been tested for PFOS+PFOA
725 results are in
- 486 are non-detects
- 222 PFOS+PFOA detected (0.56 - 15.6 ppt)
- 17 samples above EGLE criteria - 70 ppt PFOS+PFOA
- PFOS+PFOA detected in 239 samples – Concentrations range from 0.56 – 694.2 ppt
Grayling Army Airfield PFAS Historical Timeline
Grayling Army Airfield is a 923-acre area owned by the United States Army. The area is just outside the northern boundary of Grayling and is surrounded by residential and commercial properties.
- In May 2017, the MDMVA notified the Michigan Department of Environment, Great Lakes, and Energy (EGLE) that groundwater samples on the Grayling Army Airfield tested positive for PFOA/PFOS.
- In June 2017, EGLE began testing private residential wells due to the groundwater results from on-base at the Grayling Army Airfield. Private well sampling continues currently as requests come in. Filters have been provided to residents with detections of more than 70 ppt PFOS+PFOA, and ongoing discussions are needed to determine if filters should be provided to additional homes until a long-term solution is identified.
- In June 2017, two wells were sampled at the Timberly Village Mobile Home Community. Results showed low levels of PFAS.
- Follow-up samples were collected in August 2017 and results of these samples confirmed the initial sample results.
- Notification to the approximately 60 residents in 25 mobile homes was provided by the owner.
- Between Fall 2017 and Winter 2018, EGLE collected 43 environmental boring samples.
- Beginning July 10, 2018, EGLE started monitoring well installations, with 73 monitoring wells installed at 20 locations. Currently, data is being evaluated and maps developed to assist in determining next steps. A Technical Report is due in March 2019.
- On May 29, 2018, EGLE hosted a meeting to update local officials on the status of the investigation.
- On December 11, 2018, EGLE hosted a Public Meeting for the community.
- On December 20, 2018 AECOM collected six residential drinking water samples. Results were received on January 17, 2019.
- On February 6, 2019 AECOM collected one (1) residential drinking water sample. Results were received on February 21, 2019.
- AECOM completed the 2nd round of Remedial Investigation (RI) groundwater monitoring on February 8, 2019.
- On March 12, 2019 AECOM collected three (3) residential drinking water samples. Results were received on April 3, 2019.
- On June 5, 2019, there was a Restoration Advisory Board (RAB) community meeting for the Grayling Area to learn about the RAB process, how a RAB functions, and the change to fill out a Community Member Interest Form. Applications are due by June 10 and the first RAB meeting will be announced after applications are reviewed.
- AECOM collected three (3) residential drinking water samples on June 12, 2019. Results were received on July 11, 2019.
- The Army National Guard hosted an open public meeting from 7:30-8:30 on June 25, 2019 at Kirtland Community College, 4800 W 4 Mile Rd, Grayling, to discuss plans to provide alternative drinking water to property owners with wells over 70 ppt of PFOA and PFOS.
- AECOM collected one (1) residential drinking water sample on July 9, 2019. Results were received on August 1, 2019.
- AECOM submitted the Remedial Investigation Report on July 9. 2019.
- EGLE held a Town Hall PFAS Informational Meeting on August 1, 2019 at Kirtland Community College to present results of recent environmental investigations.
- AECOM collected five (5) residential well samples on July 30-31, 2019. Results are expected August 23, 2019.
- On August 14-15, 2019, AECOM collected six (6) residential well samples.
- On September 9, 2019, AECOM collected six (6) residential well samples.
- On September 30, 2019, Phase III Remedial Investigation activities began.
- A Restoration Advisory Board (RAB) Meeting was held on October 7, 2019. The meeting focused primarily on developing RAB meeting operating procedures. Updates on progress were given by the DMVA, DNR, and EGLE. A presentation on regional hydrogeology was also given by EGLE.
- On October 28, 2019, AECOM collected eight (8) new residential well samples and re-sampled 1 residential well.
- On November 6, 2019, a Restoration Advisory Board (RAB) Meeting was held. The meeting focused primarily on finalizing RAB meeting operating procedures and RAB communication with the public. Progress updates were given by the DMVA and EGLE. A presentation on the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) process was given by DMVA.
- On December 11, 2019, a Restoration Advisory Board (RAB) Meeting was held. Progress updates were given by the DMVA and EGLE. A presentation on the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) process was given by DMVA. Eric Keller, Regional Director for Senator Gary Peters, gave an update on PFAS at the federal level.
- On December 19, 2019, AECOM completed the fourth quarterly groundwater sampling event.
- On January 13, 2020, a Camp Grayling Restoration Advisory Board (RAB) meeting was held. Progress updates were given by DMVA, EGLE and DHHS. Sesha Kallakuri (MDHHS) gave a presentation on risk assessment and DHHS Drinking Water Screening Levels. The RAB members continued to develop their outreach and communications plans.
- On January 30, 2020, AECOM completed drilling field work associated with Phase III of the Remedial Investigation (RI).