US lawCaliforniaStatutesCode hscDivision 26Part 1Chapter 239012Cal. HSC § 39012Cal. HSC § 39012Last amended: 1975Year: 2025Length: 20 wordsOfficial source “Air basin” means an area of the state designated by the state board pursuant to subdivision (a) of Section 39606.PreviousCal. HSC § 39011.5NextCal. HSC § 39013