Public Notice - Saint Gobain Performance Plastics - Extension of Comment Period

“PFAS and Health”: A Free Information Session for Southern NH

A free information session about per- and polyfluoroalkyl substances (PFAS) and health from state and national experts will be held tonight,  Wednesday, November 20, 2019 from 5:30 – 8:00 p.m. at Merrimack High School, 38 McElwain Street, Merrimack, NH. Speaking at the event will be: Benjamin Chan, MD, MPH, NH State Epidemiologist, Division of Public Read More

Public Notice - Saint Gobain Performance Plastics - Extension of Comment Period

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

Public Notice - Saint Gobain Performance Plastics - Extension of Comment Period

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

Public Notice - Saint Gobain Performance Plastics - Extension of Comment Period

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

Public Notice - Saint Gobain Performance Plastics - Extension of Comment Period

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

Public Notice - Saint Gobain Performance Plastics - Extension of Comment Period

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

Public Notice - Saint Gobain Performance Plastics - Extension of Comment Period

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

Public Notice - Saint Gobain Performance Plastics - Extension of Comment Period

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

Public Notice - Saint Gobain Performance Plastics - Extension of Comment Period

Elevated Levels of PFOA Detected in Groundwater Adjacent to the Saint-Gobain Facility (Second Post in a Series)

(This post is the second in a series describing the Site Investigation activities that are taking place or will be in the areas around the Saint-Gobain facility.) At the request of NHDES, Saint-Gobain sampled three monitoring wells that were previously installed on the property immediately adjacent to their facility (703 Daniel Webster Highway). The sample Read More

Public Notice - Saint Gobain Performance Plastics - Extension of Comment Period

Site Investigation Activities Around Saint-Gobain (First Post in a Series)

For the past 2½ years, NHDES’ focus in this investigation has been to identify immediate receptors who might be drinking contaminated water, and get them an alternate water source, primarily through a connection to a public water system. While the work to extend several public waterlines is under way, we are also focused on Saint-Gobain Read More