Home › CFR › Title 5 › Part 35015 CFR Part 3501 — Supplemental Standards of Ethical Conduct for Employees of the Department of the Interior§ 3501.101— General.§ 3501.102— Designation of separate agency components.§ 3501.103— Prohibited interests in Federal lands.§ 3501.104— Prohibited interests in mining.§ 3501.105— Outside employment and activities.