An official website of the United States government.

This is not the current EPA website. To navigate to the current EPA website, please go to This website is historical material reflecting the EPA website as it existed on January 19, 2021. This website is no longer updated and links to external websites and some internal pages may not work. More information »

50 FR 7694 Standards of Performance for New Stationary Sources; Wool Fiberglass Insulation Manufacturing

Federal Register notice announcing final new source standards for Wool Fiberglass Insulation Manufacturing (40 CFR 60 Subpart PPP).

You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.