Camp Grayling Restoration Advisory Board (RAB): Cantonment/Lake Margrethe

U.S. Army National Guard Begins Installation of Stormwater Treatment System at Camp Grayling Joint Maneuver Training Center press release

Lake Margrethe Property Owners Association (LMPOA) Statement

Lake Margrethe Surface Water Results - Portage Creek Culvert

Lake Margrethe Residential Drinking Water PFAS Heat Map

Lake Margrethe Property Owners Association (LMPOA) Statement

FINAL storm water remediation input letter to LTC Brian Hunsaker, Army National Guard from RAB

Preapplication letter

Comment Matrix - Responses to Comments for the Draft Final NTCRA/ EECA- Camp Grayling, Cantonment/ Lake Margrethe, MI

Response to LMPOA (Lake Margrethe Property Owners Association)/Camp Grayling MI

Lake Margrethe PFAS Heat Map

LTR LMPOA (Lake Margrethe Property Owners Association) Owens-Price Follow-up

Request for Early and Interim Actions to Remove the Per-and Polyfluoroalkyl Substance (PFAS) Releases at Cantonment, Camp Grayling – Lake Margrethe, Crawford County, Michigan; Facility ID No. 20000100

LTR LMPOA (Lake Margrethe Property Owners Association) Response to Feb 6 2024

Lake Margrethe Property Owners Association (LMPOA) Statement for the Record at the Restoration Advisory Board (RAB) Meeting on February 6, 2024

Response from the DMVA to the LMPOA letter of December 11, 2023

Letter from the Lake Margrethe Property Owners Association to the Michigan Army National Guard

Lake Margrethe Property Owners Association (LMPOA) Statement for the Record at the Restoration Advisory Board (RAB) Meeting on December 4, 2023

Community Involvement Plan - Camp Grayling Joint Maneuver Training Center: Grayling Army Airfield, Cantonment and Lake Margrethe, Maneuver Area Training Equipment Site (MATES) Grayling, Michigan

Compliance Communication Regarding the Per-and Polyfluoroalkyl (PFAS) Release at Cantonment, Camp Grayling – Lake Margrethe

Public meeting figures & maps

Lake Margrethe Surface Water and Pore Water PFAS Investigation Report

Camp Grayling - Lake Margrethe PFAS Groundwater Monitoring Report 2019 through 2022

Remedial Investigation Mobilization 1 Quality Assurance Project Plan Cantonment and Lake Margrethe, Camp Grayling Joint Maneuver Training Center, Michigan - Final - Part I

Remedial Investigation Mobilization 1 Quality Assurance Project Plan Cantonment and Lake Margrethe, Camp Grayling Joint Maneuver Training Center, Michigan - Final - Part II

Industrial Storm Water Violation Notice from EGLE to Camp Grayling

Lake Margrethe - Figure 1 Surface Water Samples from August 2021 and May 2022 - Sampling Events (EGLE)

Lake Margrethe - Figure 2 Pore Water Samples from August 2021 and May 2022 - Sampling Events (EGLE)

Short Term Storm Water Characterization Study (STSWCS) Results - PFAS

Final Site Inspection Report Camp Grayling JMTC, Cantonment and Lake Margrethe, MI - Abbreviated Version. This is an abbreviated version of the Final Site Inspection Report Camp Grayling JMTC, Cantonment and Lake Margrethe, MI.
The full version of this document (1,000+ pages) is available in hard copy and can be requested by contacting Amy Handley (HandleyA@michigan.gov) - Environmental Quality Analyst - Department of Military and Veterans Affairs - Michigan Army National Guard - Environmental Section

Short term storm water characterization study data point

More Data Analysis Adjacent to Camp Grayling (Data courtesy of EGLE)

Time-Critical Removal Action Action Memorandum

Lake Margrethe - Cumulative Monitoring Well Sampling Results - HFPO-DA

Lake Margrethe - Cumulative Monitoring Well Sampling Results - PFBS

Lake Margrethe - Cumulative Monitoring Well Sampling Results - PFHxA

Lake Margrethe - Cumulative Monitoring Well Sampling Results - PFHxS

Lake Margrethe - Cumulative Monitoring Well Sampling Results - PFNA

Lake Margrethe - Cumulative Monitoring Well Sampling Results - PFOS

Compliance Communication - CC-002853 ANG Camp Grayling WRD.

Response to Comments - RTCs ARNG PFAS_Draft Final Supp SI QAPP_Cantonment and LM_EGLE_V1

DRAFT FINAL - Supplemental Site Inspection Quality Assurance Project Plan Addendum Camp Grayling JMTC, Cantonment and Lake Margrethe, MI

Response from the Department of Environment, Great Lakes, and Energy to 2020-10-01 request.

Camp Grayling-Lake Margrethe, Crawford County, Site ID #20000100 GSS Job # 1057
Sediment Sampling Investigation.
This memorandum summarizes the findings of a marine sediment investigation requested by the Department of Environment, Great Lakes, and Energy (EGLE), Remediation and Redevelopment Division's (RRD's), Gaylord District Office for the subject site. RRD's Geological Services Section (GSS) conducted sediment sampling at the Portage Creek outflow from Lake Margrethe on September 12, 2020.

The Army National Guard G9 (ARNG) and Michigan Department of Military and Veterans Affairs (DMVA) formally request a list of potential Applicable or Relevant and Appropriate Requirements (ARARs) from the Michigan Department of Environment, Great Lakes, and Energy, Remediation and Redevelopment Division, Gaylord District Office for two Remedial Investigation areas at Camp Grayling, Michigan: Camp Grayling Army Airfield, MI and Cantonment Area, of Camp Grayling, Michigan.

Violation Notice - VN-010004 Michigan ANG Camp Grayling WRD.

Camp Grayling - Lake Margrethe PFAS Investigation

Lake Margrethe PFAs

Camp Grayling – Lake Margrethe PFAS Remedial Investigation.
AECOM has prepared this Technical Memorandum (TM) to present the results of the Remedial Investigation (RI)
performed at the Camp Grayling – Lake Margrethe PFAS Site. The RI Investigation Area is located near the southeast corner of Lake Margrethe, near Camp Grayling, in Grayling, Michigan.

Camp Grayling-Lake Margrethe PFAS Investigation

Grayling Total FPAS Concentration Heat Map