EPA 1633, PFAS, ASTM D8421, MUR
Merit Laboratories, Inc.
PFAS by EPA 1633A and ASTM D8421 Included in ...

The analysis of PFAS by EPA 1633A and ASTM D8421 is part of the U.S. EPA’s Methods Update Rule (MUR) Rule 22. The action will promulgate EPA into 40 CFR Part 136. Also part of this action, PFAS method ASTM D8421 is proposed to be codified. 

PFAS by EPA 1633A and ASTM D8421 Included in EPA Methods Update Rule 22

PFAS testing

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Michigan Adds 19 PFAS Contaminated Sites to List

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Michigan Adds 19 PFAS Contaminated Sites to List

In a continuing trend, another 19 sites with PFAS contamination have been added to the latest list of Michigan sites. The newest Michigan EGLE PFAS Map Tracker shows that the number of confirmed PFAS contaminated sites has grown to 93, up from 74  in December 2019 and 52 a year ago.  The latest list of PFAS contamination includes sites spread across Michigan, throughout both the lower and upper peninsulas, in rural, suburban, and urban areas The EGLE also provides a PFAS map viewer, which provides information on the site name, location and address, description of the site, and a link to site-specific background, data, PFAS contaminants, site history, and recent activities. 

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Merit Laboratories Adds TO-15 to DoD ELAP Accreditation

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Merit Laboratories Adds TO-15 to DoD ELAP Accreditation

Merit Laboratories has expanded the list of analytical methods, compounds, and sample matrices for which it is accredited through the DoD Environmental Laboratory Accreditation Program (DoD ELAP).  Through this expansion, the DoD officially revised Merit Laboratories' DoD ELAP testing certification to also now include EPA Method TO-15 for the analysis of air samples. Merit is also analyzed for a comprehensive list of analytical methods for aqueous and solid sample matrices. 

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Michigan’s Minimum PFAS Analyte List Grows

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Michigan’s Minimum PFAS Analyte List Grows

Four new compounds have been added to the State of Michigan’s minimum laboratory PFAS analyte list, bringing the total to 28. The list is maintained by the Michigan Department of Environment, Great Lakes, and Energy (EGLE) for the testing of drinking water, groundwater, surface water, wastewater, soil, and landfill leachate.

Michigan Sets New PFAS Health Screening Levels for Drinking Water

Michigan Sets New PFAS Health Screening Levels for Drinking Water

The State of Michigan has lowered the drinking water health screening levels for PFAS. These new levels replace the federal advisory guidelines of a combined 70 ppt for PFOA and PFOS that the state had been using since January 2018.

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U.S. EPA Releases First-Ever PFAS Action Plan

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U.S. EPA Releases First-Ever PFAS Action Plan

The U.S. Environmental Protection Agency (EPA) released its PFAS Action Plan for addressing the Per- and Polyfluoroalkyl Substances (PFAS) challenges facing the nation. The PFAS Action Plan addresses short-term solutions for addressing PFAS and long-term strategies that will help provide the tools and technologies needed to provide clean drinking water and address PFAS prevention and contaminant control at the source.

Merit adds new PFAS Instrumentation, Increasing Sample Capacity

Merit adds new PFAS Instrumentation, Increasing Sample Capacity

As an industry leader in PFAS testing, Merit Laboratories is pleased to announce that it has purchased additional PFAS analytical testing instrumentation. The instrumentation addition will increase Merit’s PFAS testing sample capacity. Merit added the Agilent 6495B Triple Quadrupole LC/MS to its instrumentation roster because of recent technical advances.

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Deploying Drones to Search for PFAS Contamination at Camp Grayling

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Deploying Drones to Search for PFAS Contamination at Camp Grayling

The Michigan Department of Environmental Quality (MDEQ) is deploying drones to fly over Lake Margrethe to search for cold water springs that could be carrying PFAS contamination into the lake near Camp Grayling.  The MDEQ believes this is the first-ever usage of drones to search for PFAS contamination.

PFAS Soil Site Investigation Efforts Becoming Increasingly More Important

PFAS Soil Site Investigation Efforts Becoming Increasingly More Important


While testing for PFAS in water sample matrices captures most of the attention, the analysis of soil for PFAS is growing in importance. Environmental scientists are working hard to identify and investigate the presence of PFAS contamination in soil.  Soil site investigation efforts are increasing in importance as regulatory agencies and communities are looking to identify the sources of PFAS contamination. 

National SSEHRI PFAS Contamination Site Tracker Now Includes 28 Michigan Sites - Most of Any State

National SSEHRI PFAS Contamination Site Tracker Now Includes 28 Michigan Sites - Most of Any State

In May, we shared with you information about a national PFAS contamination site tracker being maintained by Northeastern University’s Social Science Environmental Health Institute (SSEHRI).  At the time, there were 17 sites in Michigan on the SSEHRI PFAS Contamination Site Tracker list.  In just four months, the number has increased to now include 28 Michigan sites with PFAS contamination.