Home › CFR › Title 50 › Part 52050 CFR Part 520 — Public Availability of Agency Materials§ 520.1— Purpose.§ 520.2— Scope.§ 520.3— Definitions.§ 520.4— Availability of materials.§ 520.5— Administrative appeal.§ 520.6— Extensions of time.§ 520.7— Fees.