CFR›Title 40›Chapter I›Part 60›40 CFR Part 60 Subpart WWWW Citation40 CFR Part 60 Subpart WWWWCorpusDaily eCFRDisplayed edition2026-04-24Last updated2026-04-24 Subpart WWWW—XXXLink to an amendment published at 91 FR 11860, Mar. 10, 2026. Authority42 U.S.C. 7401 et seq.Source36 FR 24877, Dec. 23, 1971, unless otherwise noted. Previous WWW Subpart WWW—Standards of Performance for Municipal Solid Waste Landfills That Commenced Construction, Reconstruction, or Modification on or After May 30, 1991, but Before July 18, 2014 Next X Subpart X—Standards of Performance for the Phosphate Fertilizer Industry: Granular Triple Superphosphate Storage Facilities