NESHAP for Wet-Formed Fiberglass Mat Production (40 CFR Part 63, Subpart HHHH) (Renewal)

The National Emission Standards for Hazardous Air Pollutants (NESHAP) for Wet-formed Fiberglass Mat Production were proposed on May 26, 2000, promulgated on April 11, 2002, and amended on: April 20, 2006; February 28, 2019; and November 19, 2020. The NESHAP is codified at 40 CFR Part 63, Subpart HHHH. The NESHAP apply to wet-formed fiberglass mat production facilities that emit greater than or equal to 10 tons per year (tpy) of any one hazardous air pollutant (HAP), or greater than or equal to 25 tpy of any combination of HAP. Affected sources include new and existing drying and curing ovens. The pollutants regulated include organic HAP, using formaldehyde as a surrogate. New facilities include those that commenced construction or reconstruction after the date of the original proposal (May 26, 2000). The NESHAP standards require initial notifications, performance tests, and semi-annual reports by the owners/operators of the affected facilities. This information is being collected to assure compliance with 40 CFR Part 63, Subpart HHHH.

The latest form for NESHAP for Wet-Formed Fiberglass Mat Production (40 CFR Part 63, Subpart HHHH) (Renewal) expires 2027-07-31 and can be found here.