CFR›Title 40›Chapter I›Part 197›Subpart B›Subject Group Ground Water Protection Standards ContainsSections 197.30–197.31CorpusDaily eCFRDisplayed edition2026-04-27Last updated2026-04-27 Sections 197.30 § 197.30 What standards must DOE meet? 197.31 § 197.31 What is a representative volume? Previous Additional Provisions Additional Provisions Next Human-Intrusion Standard Human-Intrusion Standard