CFR›Title 40›Chapter I›Part 57›Subpart E ContainsSections 57.501–57.505CorpusDaily eCFRDisplayed edition2026-04-15Last updated2026-04-15 Subpart E—Fugitive Emission Evaluation and Control Sections 57.501 § 57.501 General requirements. 57.502 § 57.502 Evaluation. 57.503 § 57.503 Control measures. 57.504 § 57.504 Continuing evaluation of fugitive emission control measures. 57.505 § 57.505 Amendments of the NSO. Previous D Subpart D—Supplementary Control System Requirements Next F Subpart F—Research and Development Requirements