CFR›Title 40›Chapter I›Part 61›40 CFR Part 61 Subpart E Citation40 CFR Part 61 Subpart EContainsSections § 61.50–§ 61.56CorpusDaily eCFRDisplayed edition2026-11-02Last updated2026-11-02 Subpart E—National Emission Standard for Mercury Sections § 61.50 § 61.50 Applicability. § 61.51 § 61.51 Definitions. § 61.52 § 61.52 Emission standard. § 61.53 § 61.53 Stack sampling. § 61.54 § 61.54 Sludge sampling. § 61.55 § 61.55 Monitoring of emissions and operations. § 61.56 § 61.56 Delegation of authority. Authority42 U.S.C. 7401 et seq.Source38 FR 8826, Apr. 6, 1973, unless otherwise noted. Previous D Subpart D—National Emission Standard for Beryllium Rocket Motor Firing Next F Subpart F—National Emission Standard for Vinyl Chloride