Home › CFR › Title 50 › Part 150 CFR Part 1 — Definitions§ 1.1— Meaning of terms.§ 1.2— Authorized representative.§ 1.3— Service.§ 1.4— Director.§ 1.5— Officer in Charge.§ 1.6— Person.§ 1.7— Regional director.§ 1.8— Secretary.