Draft Air Permit Available for Public Comment

Date: May 19, 2023

On May 19, 2023, NHDES released a draft state permit to operate for Saint-Gobain Performance Plastics (SGPP) in Merrimack. The draft permit incorporates all regulatory requirements for the facility for manufacturing of polytetrafluoroethylene (PTFE) coated fabrics and films including operation of air pollution control equipment for the purposes of removing per- and polyfluoroalkyl substances (PFAS).

The public comment period has been extended through July 5, 2023, and a public hearing was held June 21, 2023, in Merrimack, NH.

Written comments may be submitted via email or U.S. Mail by 4:00 PM on July 5, 2023 to:

Catherine.A.Beahm@des.nh.gov, or

Cathy Beahm, Administrator
P.O. Box 95
Concord, NH 03302

The draft permit and supporting documents related to this action can be accessed below and electronically through the OneStop Data and Information portal (DES Interest ID: 3301100165) at the following links:

If you need accommodation with any of these files, please send an email to margaret.m.king@des.nh.gov.