US lawOregonRegulationsChapter 736 — Parks and Recreation DepartmentDivision 45 — OREGON NATURAL AREAS PROGRAM RULES736-045-0330OAR 736-045-0330OAR 736-045-0330. Oregon Register of Natural Heritage Resources: Register ReviewLast amended: 2012Length: 11 wordsOfficial source The department may review and update the Register every five years.PreviousOAR 736-045-0320NextOAR 736-045-0340