Oregon Revised Statutes Public Health and Safety § 459.118

Before any disposal site operator enters into a new contract to receive more than 75,000 tons per year of solid waste from outside the region, the person proposing to transport the solid waste to the disposal site shall conduct or have conducted a study of the alternative transportation routes and modes of transportation that may be used to transport the solid waste to the disposal site. The study conducted under this section shall be made available, upon request, to any person.