4 The record articles

Reestablishment of a Wool Fiberglass Manufacturing Compliance Deadline

Posted: November 8th, 2017

Authors: All4 Staff 

Update to the article, Extension of a Wool Fiberglass Manufacturing Compliance Deadline, published on August 14, 2017.

Due to the receipt of “adverse comment,” U.S. EPA is withdrawing the direct final rule for the National Emissions Standards for Hazardous Air Pollutants (NESHAP) located at 40 CFR Part 63 Subpart NNN.  Under this action, facilities subject to Subpart NNN would have been provided an additional year to comply with the emissions limits for flame attenuation (FA) lines.  However, because the action was withdrawn, the owners or operators of FA lines subject to the emission limits for formaldehyde, phenol, and methanol published in Subpart NNN, must demonstrate compliance with the emissions limits by July 31, 2017.

During the development of this blog update, U.S. EPA was contacted by ALL4 to determine the regulatory intent of this action.  ALL4 was informed that U.S. EPA has reassessed their intentions for flame attenuation lines within the past year.  In a separate proposed action, U.S. EPA has proposed to subcategorize the bonded flame attenuation production lines, therefore capturing emissions data from the lines with lower “pull rates,” and designating emission limits for these lines in their own subcategory.  Further, U.S. EPA intends to change this rule again in December 2017.

Needless to say, there will be additional action regarding Subpart NNN in the near future.  If you have questions about this action or if you’d like assistance complying with this currently-passed emissions compliance deadline, please contact ALL4 at 610-933-5246.


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