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 findings from the testing to NHDES for review. A copy of the Barr report and the SGS lab report are available here:
The NHDES Air Resources Division is in the process of reviewing these reports.