Merit Laboratories

Merit Laboratories Featured in Cover Story in the October Issue of Lab Manager

Merit Laboratories Featured in Cover Story in the October Issue of Lab Manager

We’re proud to be a part of the cover story in the latest issue of Lab Manager.  The article, Human Resources, explores the important role a laboratory manager should play in hiring, leading, and developing employees.  

Explaining the GSI Pathway

 Explaining the GSI Pathway

Because of Michigan’s complex geology, the groundwater-surface water interface (GSI) plays an important role in the state’s environmental cleanup program. Last month, we shared with you information about recent updates made by the MDEQ to the Generic Cleanup Criteria Tables.  But what exactly is a GSI Pathway and how is GSI Pathway relevancy determined?

Merit Laboratories is the First PFAS-Certified Laboratory in Michigan

Merit Laboratories is the First PFAS-Certified Laboratory in Michigan

Merit Laboratories is the first environmental laboratory in Michigan to achieve certification for the analysis of PFAS (per- and polyfluoroalkyl substances). Merit is ISO/IEC 17025-certified for the analysis of PFAS by two analytical mehods. EPA 537 for drinking water testing and ASTM D7979 with Isotopic Dilution for testing wastewater, groundwater, and surface water.


MDEQ Generic Cleanup Criteria Tables Updated to Reflect GSI Changes

MDEQ Generic Cleanup Criteria Tables Updated to Reflect GSI Changes

The MDEQ published updates on June 25th to the Generic Cleanup Criteria Tables to reflect recent changes to the GSI (Groundwater-Surface Water) Criteria.   The GSI tables are based upon the water quality standards developed under Michigan Part 31, Rule 57 of  (Water Resources of the Natural Resources and Environmental Protection Act).  Water quality standards were updated in March 2018, which served as a precursor to the GSI Criteria table updates.

PFAS Wastewater Sampling Guidance: Leave the Sharpies and Post-It Notes at the Office

PFAS Wastewater Sampling Guidance: Leave the Sharpies and Post-It Notes at the Office

The Michigan Department of Environmental Quality (MDEQ) recently issued guidance on wastewater sample collection for PFAS (per- and polyfluoroalkyl substances). The wastewater sampling guidance can be used for compliance with the new PFAS Industrial Pretreatment Program (IPP) requirements. The wastewater PFAS sampling guidance covers sampling equipment, equipment decontamination, sample collection and handling, field clothing, personal protective equipment (PPE), and sample shipment. 

It’s Hard to Know the PFAS Players Without a Scorecard

It’s Hard to Know the PFAS Players Without a Scorecard

Many of the longer chain carbon compounds analyzed as part of PFAS testing have long chemical names and can be tricky to differentiate. At Merit Laboratories, we’re always working to find ways to make it easy for our clients.  To help you out, here’s a list of acronyms used for commonly-analyzed polyfluoroalkyl substances (PFAS). 

The Number of PFAS Sites in Michigan Grows

The Number of PFAS Sites in Michigan Grows

The number of sites with PFAS contamination in Michigan continues to grow.  The MDEQ has compiled a listing of these PFAS sites along with a map  that have been identified as having PFAS levels that are potentially impacting human health and the environment .  The sites, which are found at locations throughout Michigan, include: