CFR›Title 40›Chapter I›Part 63›Subpart TTTTT›Subject Group Emission Limitations and Work Practice Standards ContainsSections 63.9890–63.9891CorpusDaily eCFRDisplayed edition2026-07-30Last updated2026-07-30 Sections 63.9890 § 63.9890 What emission limitations must I meet? 63.9891 § 63.9891 What work practice standards must I meet for my fugitive dust sources? Previous Continuous Compliance Requirements Continuous Compliance Requirements Next General Compliance Requirements General Compliance Requirements