CFR›Title 10›Chapter I›Part 63›Subpart L›Subject Group Human Intrusion Standard ContainsSections 63.321–63.322CorpusDaily eCFRDisplayed edition2026-04-15Last updated2026-04-15 Sections 63.321 § 63.321 Individual protection standard for human intrusion. 63.322 § 63.322 Human intrusion scenario. Previous Groundwater Protection Standards Groundwater Protection Standards Next Postclosure Individual Protection Standard Postclosure Individual Protection Standard