40 CFR 312.20 : Protection Of Environment (§ 1.1 To Parts 1851-1899) — (§ 300.1 To Parts 375-399) — Environmental Protection Agency (Continued) (§ 300.1 To Parts 375-399) — Superfund, Emergency Planning, And Community Right-To-Know Programs (§ 300.1 To Parts 375-399) — Innocent Landowners, Standards For Conducting All Appropriate Inquiries (§ 312.1 To § 312.31) — Standards And Practices (§ 312.20 To § 312.31) — All appropriate inquiries.