NHDES Issues Comment Letter on Saint-Gobain Site Investigation Documents, June 16, 2020

NHDES issued a comment letter to Saint-Gobain Performance Plastics (SGPP) on June 16, 2020 in reference to four reports that address the ongoing site investigation work in the vicinity of the SGPP Facility in Merrimack, New Hampshire. An overview of the site investigation is provided in this previous NHDES blog post: https://www4.des.state.nh.us/nh-pfas-investigation/?p=736.

The four reports addressed in the comment letter include:

Report on 2018 Stormwater and Surface Water Activities (SSWA), Volumes I & II, prepared by Golder Associates, Inc. (Golder), dated March 15, 2019

 Site Investigation Report, Saint-Gobain Performance Plastics, prepared by Golder, dated April 19, 2019

 Supplemental Site Investigation Data Transmittal, prepared by Golder, dated March 11, 2020

 2019 Annual Groundwater Summary, prepared by Golder, dated March 18, 2020

 In the letter, NHDES requests submission of a Supplemental Site Investigation Report within 120 days that includes a preliminary screening of remedial alternatives. A full copy of the letter can be found at this link: http://www4.des.state.nh.us/IISProxy/IISProxy.dll?ContentId=4851650.