1. “Commission” means the Corporation Commission;

2. “Hazardous liquid” means petroleum or petroleum products and anhydrous ammonia;

3. “Person” means any individual, corporation, industry, firm, partnership, association, venture, trust, institution, or federal, state, or local governmental instrumentality, or any legal entity however organized; and

4. “Transportation system” means a system of pipelines, conduits, pumping stations and force mains, temporary storage facilities, and all other constructions, devices, appurtenances, and facilities used in the movement of hazardous liquids. Said term does not include gathering pipelines in rural areas, onshore oil or gas production, refining, or manufacturing facilities, oil or gas storage facilities, or in-plant piping systems associated with said oil or gas facilities.