W.M. Barr & Co. v. South Coast Air Quality Management District

*412Opinion

JOHNSON, J.

In July 2010, the South Coast Air Quality Management District (the District) adopted “Rule 1143,” which required manufacturers of consumer paint thinner and solvent products to limit the use of ozone-forming volatile organic compounds (VOC’s) in their products in order to meet the District’s commitment under the federal Clean Air Act (42 U.S.C. § 7401 et seq.) and the California Clean Air Act (Health & Saf. Code, § 40910 et seq.).1 The District believed that the adoption of Rule 1143 would result in manufacturers substituting acetone for VOC’s in their products, and prepared…