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Information Regarding the August 5, 2020 Public Hearing Variance Petition from Saint-Gobain Performance Plastics What is the purpose of the variance petition? Saint-Gobain Performance Plastics (“Saint-Gobain”) requested a variance of the February 11, 2021, deadline (“Deadline”), set pursuant to RSA 125-C:10-e and the terms of Temporary Permit No. TP-0256 (the “Permit”) issued on February 11, Read More

Pursuant to the Laws of the State of New Hampshire, January Session of 2018 Chapter 306:2 (HB 1766), NHDES submitted a status report to the Legislature, through March 2020, on the occurrence of per- and polyfluoroalkyl substances (PFAS) in New Hampshire. To view the report: Statewide PFAS Occurrence Status Report Report tables: Table: Public Water Read More

NHDES issued a comment letter to Saint-Gobain Performance Plastics (SGPP) on June 16, 2020 in reference to four reports that address the ongoing site investigation work in the vicinity of the SGPP Facility in Merrimack, New Hampshire. An overview of the site investigation is provided in this previous NHDES blog post: https://www4.des.state.nh.us/nh-pfas-investigation/?p=736. The four reports Read More

On June 4, 2020, Saint Gobain Performance Plastics (SGPP) submitted a request for a variance of the February 11, 2021 deadline for completing construction and installation of the PFAS air emission controls as required in RSA 125-C:10-e and the air permit TP-0256 issued by NHDES on February 11, 2020. In the variance request, SGPP cited Read More

On June 4, 2020, Saint Gobain Performance Plastics (SGPP) submitted a request for a variance of the February 11, 2021 deadline for completing construction and installation of the PFAS air emission controls as required in RSA 125-C:10-e and the air permit TP-0256 issued by NHDES on February 11, 2020. In the variance request, SGPP cited Read More

The NHDES Environmental Health Program (EHP) has reviewed the 2018 Squam Lake Fish Tissue Results for per- and polyfluoroalkyl substances (PFAS) and has released the following Human Health Risk Assessment of Fish Consumption and Detected PFAS at Squam Lake, April 13, 2020.

Recording of the March 2, 2020 Londonderry Town Council Meeting. At the meeting, Clark Freise, NHDES Assistant Commissioner and Jeffrey Marts, P.G., Senior Hydrogeologist in the NHDES Hazardous Waste Remediation Bureau appeared to give a presentation on PFAS and other ground water and drinkingwater issues in the Town of Londonderry – and to answer questions. Read More

On February 11th, the NHDES Air Resources Division issued a Temporary Permit (i.e. Permit to Construct) to Saint-Gobain Performance Plastics (SGPP) in Merrimack. The permit authorizes SGPP to install air pollution control equipment for the purposes of removing per- and polyfluoroalkyl substances (PFAS). As part of this decision, NHDES determined that the proposed control equipment Read More

In 2017, NHDES requested assistance from the U.S. EPA’s Office of Research and Development (EPA ORD) to conduct analyses of various samples for the potential existence of PFAS compounds. On January 30, 2020 EPA ORD issued Reports #7 and #8 in a series of work products that document results of the analyses performed on the Read More

Saint-Gobain sent a letter to NHDES on January 13, 2020 outlining how it intends to proceed with the Water Supply Well Sampling Program in light of the status of the PFAS Drinking Water Standards (MCLs) and Ambient Groundwater Quality Standards (AGQS). The Sampling Program is outlined in a Work Plan submitted on behalf of Saint-Gobain Read More