Briefing Report - Prepared by Stephen M. Roberts, Ph.D.

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

Briefing Report - Prepared by Stephen M. Roberts, Ph.D.

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

Briefing Report - Prepared by Stephen M. Roberts, Ph.D.

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

Briefing Report - Prepared by Stephen M. Roberts, Ph.D.

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

Briefing Report - Prepared by Stephen M. Roberts, Ph.D.

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

Briefing Report - Prepared by Stephen M. Roberts, Ph.D.

NHDES Notifies Saint-Gobain Performance Plastics to Install Controls on Air Emissions

News from the New Hampshire Department of Environmental Services FOR IMMEDIATE RELEASE DATE: October 1, 2018 CONTACT: James Martin, (603) 271-3710 des.nh.gov twitter.com/NHDES   NHDES Notifies Saint-Gobain Performance Plastics to Install Controls on Air Emissions   CONCORD, NH – The New Hampshire Department of Environmental Services (NHDES) announced today that it has instructed Saint-Gobain Performance Read More

Briefing Report - Prepared by Stephen M. Roberts, Ph.D.

Fish Tissue Sampling Requested Around Saint-Gobain Facility (Fifth Post in a Series)

(This post is the fifth in a series describing the Site Investigation activities that are taking place or will be in the areas around the Saint-Gobain facility.) Based on discussions with NH Fish and Game, NHDES understands that Dumpling Brook (located south of the Saint-Gobain facility) is considered a “high-quality wild brook trout stream” due Read More

Briefing Report - Prepared by Stephen M. Roberts, Ph.D.

Elevated Levels of PFAS in Stormwater at the Saint-Gobain Facility (Fourth Post in a Series)

(This post is the fourth in a series describing the Site Investigation activities that are taking place or will be in the areas around the Saint-Gobain facility.) Testing completed in 2017 indicated the presence of PFAS in stormwater generated at the Saint-Gobain facility and in samples collected from nearby surface water bodies.  Saint-Gobain is completing Read More

Briefing Report - Prepared by Stephen M. Roberts, Ph.D.

Dye Test at Stormwater Outfall on Merrimack River (Third Post in a Series)

          (This post is the third in a series describing the Site Investigation activities that are taking place or will be in the areas around the Saint-Gobain facility.) Stormwater from the Saint-Gobain facility is conveyed in underground piping and discharges to the Merrimack River at a stormwater outfall east of the Read More