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NHDES has extended the deadline to submit written comments for the draft temporary permit (air permit) to Saint-Gobain Performance Plastics Corporation to 4:00 pm on Tuesday, December 31, 2019. The comment period was set to close December 6, 2019. The application and draft permit are on file with the Director, New Hampshire Department of Environmental Read More

Water Quality Standards Advisory Committee Friday, December 6, 2019, 1:30 pm – 3:30 pm Department of Environmental Services Room 112, 113, and 114 29 Hazen Drive, Concord, NH Proposed Agenda Include Discussion of NHDES Draft Surface Water Quality Standard Plan Legislative Update EPA Update Dissolved Oxygen Update Water Quality Standards Advisory Committee Meeting Agenda, Dec. Read More

On November 5, NHDES held a public hearing on a draft air permit related to the installation and operation of air pollution control equipment at Saint-Gobain Performance Plastics Corporation in Merrimack. Following the conclusion of the public hearing, NHDES staff provided an update on the Saint-Gobain site investigation activities and the response to assessing drinking Read More

Information Regarding the November 5, 2019 Public Hearing and Subsequent Information Session What is the purpose of the public hearing and information sessions?    There are two events that will be held on the evening of November 5th. The first event is a public hearing regarding a draft Temporary Permit (draft air permit) that was Read More

News from the New Hampshire Department of Environmental Services FOR IMMEDIATE RELEASE DATE: October 8, 2019 CONTACT: Jim Martin, (603) 271-3710 des.nh.gov twitter.com/NHDES Public Hearing on Draft Air Permit for Air Pollution Control Equipment at Saint-Gobain Performance Plastics and Information Meeting to Provide Update on Southern New Hampshire PFAS Investigation Concord, NH – The New Read More

On September 30, 2019 new Ambient Groundwater Quality Standards (AGQS) went into effect for four per- and polyfluoroalkyl substances (PFAS) that include: 12 parts per trillion (ppt) for perfluorooctanoic acid (PFOA), 15 ppt for perfluorooctane sulfonic acid (PFOS), 18 ppt for perfluorohexane sulfonic acid (PFHxS), and 11 ppt for perfluorononanoic acid (PFNA). In anticipation of Read More

Summary of the Technical Background Report for the Proposed Maximum Contaminant Levels and Ambient Groundwater Quality Standards for PFOA, PFOS, PFNA and PFHxS.

News from the New Hampshire Department of Environmental Services FOR IMMEDIATE RELEASE DATE: June 28, 2019       CONTACT: Jim Martin, (603) 271-3710 des.nh.gov twitter.com/NHDES   NHDES Proposes New PFAS Drinking Water Standards Final Rulemaking Proposal for PFOA, PFOS, PFHxS and PFNA [CORRECTION: This press release has been updated to correct a minor error in describing a Read More

NHDES slides from the June 20, 2019 update on East Kingston PFAS Investigation and Remediation 20190620 East Kingston Public Mttg_Website Version final (note – slides were slightly modified to provide context to photographs)

In 2017, NHDES requested assistance from the U.S. EPA’s Office of Research and Development (EPA ORD) to conduct analyses of samples from various media for the potential existence of unique PFAS compounds not previously identified through conventional analysis. One part of this project was for EPA ORD to analyze stack test emission samples taken during Read More