CFR›Title 40›Chapter I›Part 60›40 CFR Part 60 Subpart PPP Citation40 CFR Part 60 Subpart PPPContainsSections 60.680–60.685CorpusDaily eCFRDisplayed edition2026-06-29Last updated2026-06-29 Subpart PPP—Standard of Performance for Wool Fiberglass Insulation Manufacturing Plants Sections 60.680 § 60.680 Applicability and designation of affected facility. 60.681 § 60.681 Definitions. 60.682 § 60.682 Standard for particulate matter. 60.683 § 60.683 Monitoring of operations. 60.684 § 60.684 Recordkeeping and reporting requirements. 60.685 § 60.685 Test methods and procedures. Authority42 U.S.C. 7401 et seq.Source50 FR 7699, Feb. 25, 1985, unless otherwise noted. Previous PP Subpart PP—Standards of Performance for Ammonium Sulfate Manufacture Next Q Subpart Q—Standards of Performance for Primary Zinc Smelters