Final Proposal Packet, including Summary of Public Comments with NHDES Responses, June Technical Report, Cost and Benefits, and AG Letter

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

Final Proposal Packet, including Summary of Public Comments with NHDES Responses, June Technical Report, Cost and Benefits, and AG Letter

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

Final Proposal Packet, including Summary of Public Comments with NHDES Responses, June Technical Report, Cost and Benefits, and AG Letter

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

Final Proposal Packet, including Summary of Public Comments with NHDES Responses, June Technical Report, Cost and Benefits, and AG Letter

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

Final Proposal Packet, including Summary of Public Comments with NHDES Responses, June Technical Report, Cost and Benefits, and AG Letter

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

Final Proposal Packet, including Summary of Public Comments with NHDES Responses, June Technical Report, Cost and Benefits, and AG Letter

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

Final Proposal Packet, including Summary of Public Comments with NHDES Responses, June Technical Report, Cost and Benefits, and AG Letter

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

Final Proposal Packet, including Summary of Public Comments with NHDES Responses, June Technical Report, Cost and Benefits, and AG Letter

Dust Accumulating on Exterior of Condo Complex Tested for PFAS (Sixth Post in a Series)

(This post is the sixth in a series describing the Site Investigation activities that are taking place or will be in the areas around the Saint-Gobain facility.) NHDES representatives sampled a gray soot-like substance accumulating on exterior window sills and thresholds of the Webster Green Condominiums in Merrimack, NH on April 12, 2018. Analytical results Read More