US lawIdahoRegulationsIDAPA 58 — Environmental Quality, Department ofChapter 58.01.01 — Rules for the Control of Air Pollution in Idaho666IDAPA 58.01.01.666Reasonable Progress GoalsLast amended: 2023Year: 2026Length: 21 wordsOfficial source The Department will establish reasonable progress goals expressed in deciviews for each mandatory Class I Federal Area located within Idaho. (3-28-23)PreviousIDAPA 58.01.01.665NextIDAPA 58.01.01.667