CFR›Title 40›Chapter I›Part 60›Subpart DD ContainsSections 60.300–60.304CorpusDaily eCFRDisplayed edition2026-06-08Last updated2026-06-08 Subpart DD—Standards of Performance for Grain Elevators Sections 60.300 § 60.300 Applicability and designation of affected facility. 60.301 § 60.301 Definitions. 60.302 § 60.302 Standard for particulate matter. 60.303 § 60.303 Test methods and procedures. 60.304 § 60.304 Modifications. Source43 FR 34347, Aug. 3, 1978, unless otherwise noted. Previous Dc Subpart Dc—Standards of Performance for Small Industrial-Commercial-Institutional Steam Generating Units Next DDD Subpart DDD—Standards of Performance for Volatile Organic Compound (VOC) Emissions from the Polymer Manufacturing Industry