CFR›Title 40›Chapter I›Part 63›Subpart XXXX›Subject Group What This Subpart Covers ContainsSections 63.5980–63.5983CorpusDaily eCFRDisplayed edition2026-09-24Last updated2026-09-24 Sections 63.5980 § 63.5980 What is the purpose of this subpart? 63.5981 § 63.5981 Am I subject to this subpart? 63.5982 § 63.5982 What parts of my facility does this subpart cover? 63.5983 § 63.5983 When do I have to comply with this subpart? Previous Testing and Initial Compliance Requirements for Tire Production Affected Sources Testing and Initial Compliance Requirements for Tire Production Affected Sources