UPDATE: Final Massachusetts Contingency Plan Amendments Released to Include Six PFAS Compounds

December 30, 2019


The Massachusetts Department of Environmental Protection (MassDEP) has released final soil and groundwater cleanup rule and a draft drinking water rule relative to per- and polyfluoroalkyl substances (PFAS), a group of man-made chemicals in use since the 1940s.  The rules will be published by the Secretary of State on December 27, 2019 and are available now on the MassDEP website (final PFAS-related amendments to the MCP and draft drinking water rule).

Once effective on December 27, 2019, the amendments to the MCP will make Massachusetts one of only a small number of states with formal PFAS cleanup standards for groundwater and one of an even smaller group of states with formal PFAS cleanup levels for soil.  Massachusetts’ GW-1 standard will be 20 parts per trillion (ppt) for the sum of six (6) PFAS compounds (perfluorodecanoic acid [PFDA], perfluoroheptanoic acid [PFHpA], perfluorohexanesulfonic acid [PFHxS], perfluorononanoic acid [PFNA], perfluorooctanesulfonic acid [PFOS], and perfluorooctanoic acid [PFOA]) in groundwater.  S-1 soil cleanup levels will range from 0.0003 to 0.3 milligrams per kilogram (mg/kg) depending on the individual PFAS compound.


Additional Proposed MCP Amendments

Other proposed amendments are still under review. While there are numerous changes proposed for incorporation into the 2019 MCP, your can read about the more substantive and potentially impactful ones presented by the MassDEP here.


GeoInsight’s Expertise 

Each of GeoInsight’s six Licensed Site Professionals (LSPs) have direct experience working on projects with releases of various contaminants including emerging contaminants like PFAS. Our LSPs have a solid understanding of the occurrence, chemistry, fate/transport and unique sampling, analytical and data validation requirements of PFAS, and will work together to bring practical solutions forward, navigate MCP requirements and get projects to regulatory closure. 


If you have any questions about the final PFAS-related amendments of other proposed amendments to the MCP or to understand how/if these regulatory changes could impact your site – call us 800.217.1953


Andy Donoghue LSP, Senior Project Engineer
atdonoghue@geoinc.com | 978.679.1600


Tim Maus, Project Geologist 
twmaus@geoinc.com | 978.679.1600