Grayling Army Airfield, Grayling, Crawford County

Webpage Updated: November 19, 2020 (maps)
Content Updated: October 5, 2020

EGLE Site Lead:
Christiaan Bon
BonC@Michigan.gov
989-370-9624

Background

Grayling Army Airfield is a 923-acre area owned by the United States Army where aqueous film forming foam (AFFF) was used and stored. The area is just outside the northern boundary of Grayling and is surrounded by residential and commercial properties.

Grayling Army Airfield PFOA Map Grayling Army Airfield PFOS Map

Recent Accomplishments

  • On September 23, 2020, AECOM collected one (1) residential drinking water sample.
  • On September 24, 2020, a virtual Restoration Advisory Board (RAB) was held. Progress updates were given by the Department of Military and Veterans Affairs (DMVA), the Department of Environment, Great Lakes, and Energy (EGLE), and the Department of Health and Human Services (DHHS).
  • On September 30, 2020, AECOM completed the September 2020 quarterly groundwater sampling event.

Next Steps

  • EGLE will continue to monitor new residential sampling requests and call residents to set up sampling dates and times.
  • AECOM will prepare a Phase II Remedial Investigation Report.

Residential Well Testing/Alternate Water Information

  • Households with detections of PFAS have been provided point of use filters and replacement cartridges by District Health Department #10.
  • All residential well testing reflected on this report has been conducted by EGLE.
  • DHHS is nearing completion of round 1 of residential resampling. They are compiling data and will be sending out results letters.

Military Update

  • A Time Critical Removal Action (TCRA) is underway to remedy 17 residences and businesses with drinking water exceeding the 70 ppt PFOA+PFOS criteria. The military will be contacting those affected. Remedies include whole-house filters and connections to city water.

Upcoming Community Engagement

  • The next Camp Grayling Restoration Advisory Board (RAB) Virtual Meeting has been not yet been scheduled. The meeting will be recorded and posted to the RAB website. Visit the Camp Grayling RAB website.
Sampling chart reflects data compared to Part 201 Criteria effective 8/3/2020
PFOS and PFOA Only

Type of Sample

Date Sampled 
(or range)

Number of Sample
Results Received

Number of Samples above
PFOS Criteria

Number of Samples above
PFOA Criteria

Drinking Water
(Residential)
Through Oct 5, 2020 731 29 68

Groundwater

Through Oct 5, 2020 937 104 90
Cumulative   1,668 133 158


 

*Residential well results are compared to Part 201 Criteria of PFOS 16 ppt and PFOA 8 ppt.
*Groundwater results are compared to EGLE Part 201 Criteria of PFOS 16 ppt and PFOA 8 ppt.
*Surface water samples are compared to Rule 57 non-drinking water values of 12 ppt for PFOS and 12,000 ppt for PFOA. 

Sampling notes

  • On August 3, 2020, new Part 201 Criteria went into effect.  Historical sampling data compared to Part 201 Criteria >70 is captured in the historical timeline below.
  • Other PFAS analytes were detected in samples. There are no federal or state standards for these analytes.

Historical Timeline

  • 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). 
  • 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.
  • On April 2, 2020, AECOM completed the first Phase III quarterly sampling event. 
  • On May 27, 2020, a virtual Restoration Advisory Board (RAB) was held. Progress updates were given by the Department of Military and Veterans Affairs (DMVA), the Department of Environment, Great Lakes, and Energy (EGLE), and the Department of Health and Human Services (DHHS).
  • On June 15, 2020, AECOM completed the June 2020 quarterly groundwater sampling event.
  • On July 22, 2020, a Camp Grayling Restoration Advisory Board (RAB) Virtual Meeting was held. Updates were given by DMVA, DHHS, and EGLE.

Historical Sampling Chart: data is reflective of criteria prior to 8/3/2020:
PFOS + PFOA Only

This chart reflects data received prior to 8/3/2020.

Type of Sample

Date Sampled

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) Through
Jul 7, 2020
730 725 486 222 17

Groundwater

Through
Jul 7, 2020
937 904 503 346 55
Cumulative   1,667 1,629 989 568 72



*Groundwater results are compared to the EGLE 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.

  • Related Sampling Notes:

    • 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.    
    • RESULTS

      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 June 8, 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 were detected in 239 samples – Concentrations range from 0.56 – 694.2 ppt

Contact Information

  • For assistance, please email the Environmental Assistance Center or call 800-662-9278.

    If you live in the designated area for free water testing, please fill out and send this email form.


    Residents please note:

    Many residents have inquired about which whole house filters are certified to remove PFOS/PFOA. At this time, EGLE is not aware of any whole house filters currently on the market that are certified to remove PFOS/PFOA by the NSF International.