Welcome. This website will be used to update interested parties on NHDES’ current investigation into the presence of Per- and Polyfluoroalkyl Substances (PFASs) in New Hampshire. You can access our previous webpage for archived information: https://www.des.nh.gov/organization/commissioner/pfoa.htm.
South River Road Project –Construction Delay
South River Road Project –Construction Delay At the October 10, 2018 public meeting held in Merrimack, NH, a construction begin date of October 29, 2018 was communicated for the start of the South River Road Project. The contractor, Northeast Earth Mechanics, has been delayed with the completion of a previous project due to weather constraints. Read More
Draft reference list that is currently being used by the Health Risk Assessment (HRA) Team at NH-DES to develop MCL’s for PFOA, PFOS, PFHxS and PFNA.
Below is the draft reference list that is currently being used by the Health Risk Assessment (HRA) Team at NH-DES to develop MCL’s for PFOA, PFOS, PFHxS and PFNA. Draft PFAS Reference List as of 11-07-18 The draft list is comprised of references from: · Governmental documents on PFAS (e.g. ATSDR Draft Toxicological Profile, US EPA Read More
Saint-Gobain Stormwater Sample Data Submitted
Saint-Gobain recently submitted data for samples collected as part of the Stormwater and Surface Water Source Investigation. The submittal can be viewed here: http://www4.des.state.nh.us/IISProxy/IISProxy.dll?ContentId=4744493. [The blog post “Elevated Levels of PFAS in Stormwater at the Saint-Gobain Facility (Fourth Post in a Series)” posted on September 27, 2018, provides a general overview of the Stormwater Investigation Read More
Saint-Gobain Stack Testing Reports (Spring 2018 Tests)
In the Spring of 2018, Saint-Gobain Performance Plastics facility in Merrimack conducted stack testing utilizing the services of Barr Engineering Co. (Barr) to collect the samples and SGS North America Inc. to conduct the analysis. During the testing, samples were collected for analysis of PFAS, ammonia, and fluoride. Barr recently submitted a report of the Read More
Slides for upcoming PFAS MCL work sessions
NHDES is holding several work sessions next week related to setting public drinking water (MCLs) and groundwater standards (AGQS) for the following Per- and Polyfluoroalkyl Substances (PFASs): PFOA, PFOS, PFNA and PFHxS. Here are the slides that will be discussed at the meetings: PFAS MCL Work Session Slides The meeting announcement and schedule can be found here: https://www.des.nh.gov/media/pr/2018/20181003-pfas-meetings.htm
October 10, Merrimack Public Info Meeting Video, Slides and Posters
If you were unable to attend the NHDES Public Information Meeting in Merrimack on October 10, below are links to the video of the meeting, as well as, the slides presented and various posters that were at the meeting. Video of the meeting (link to MerrimackTV on YouTube) October 10, Merrimack Public Info Meeting Slides Read More
Sampling at Other Properties (Eighth Post in a Series)
(This post is the eighth in a series describing the Site Investigation activities that are taking place or will be in the areas around the Saint-Gobain facility.) A preliminary Groundwater Management Zone (GMZ) was outlined in the March 2017 Consent Decree between Saint-Gobain and the State of New Hampshire. This preliminary boundary is based on Read More
Agenda for Oct. 10 Public Information Meeting in Merrimack
Agenda Public Information Meeting Wednesday, October 10, 2018 – 6:30 PM James Mastricola Upper Elementary School (JMUES) All-Purpose Room 26 Baboosic Lake Road, Merrimack, NH Welcome – 5 minutes, Lynn Christensen, Town Moderator NHDES Update – 15 minutes, Clark Freise, Asst. Commissioner, NHDES MVD Update – 10 minutes, Mike Metcalf and Keith Pratt, Underwood Engineering, Read More
Stormwater System Improvements Planned at Saint-Gobain Facility (Seventh post in a Series)
(This post is the seventh in a series describing the Site Investigation activities that are taking place or will be in the areas around the Saint-Gobain facility.) Stormwater generated at the Saint-Gobain facility is collected in a below ground piping network and discharged at an outfall on the Merrimack River. Water has been observed discharging Read More
Release: NHDES to Hold Stakeholder and Technical Work Sessions on Setting Public Drinking Water Standards for PFOA, PFOS, PFNA, & PFHxS
News from the New Hampshire Department of Environmental Services FOR IMMEDIATE RELEASE DATE: October 3, 2018 CONTACT: Jim Martin, (603) 271-3710 NHDES to Hold Stakeholder and Technical Work Sessions Setting Public Drinking Water and Groundwater Standards for PFOA, PFOS, PFNA, & PFHxS Concord, NH – The New Hampshire Department of Environmental Services (NHDES) will Read More