CFR›Title 30›Chapter I›Part 28›Subpart E ContainsSections 28.40–28.41CorpusDaily eCFRDisplayed edition2026-04-15Last updated2026-04-15 Subpart E—Construction, Performance, and Testing Requirements Sections 28.40 § 28.40 Construction and performance requirements; general. 28.41 § 28.41 Testing requirements; general. Previous D Subpart D—Quality Control