The Ozone Transport Commission (OTC) is a multi-state organization founded in 1991 and created under the Clean Air Act.
OTC has no regulatory authority, but assists its members in developing model regulations for implementation at the state level.
EPA approved the recommendation but it was ultimately vacated by the U.S. Court of Appeals, District of Columbia Circuit, in a challenge brought by Virginia and three automobile trade associations.
Another area that OTC has adopted policies to reduce ozone precursors (NOx and Volatile Organic Compounds (VOCs) is through model rule development.
The 2001 generation of model rules called for the regulation of Consumer Products, Portable Fueling Containers, Architectural and Maintenance Coatings, Solvent Cleaning, Mobile Equipment Repair and Refinishing, and Additional NOx Controls for Industrial Boilers, Cement Kilns, Stationary Reciprocating Engines, and Stationary Combustion Engines.