In this chapter:
(1) “Commission” means the Texas Natural Resource Conservation Commission.
(2) “Emission reduction credit” means a credit recognized by the commission and the United States Environmental Protection Agency for reductions in emissions of air pollutants.
(3) “Nonattainment area” means an area so designated within the meaning of Section 107(d) of the federal Clean Air Act (42 U.S.C. § 7407).
(4) “Organization” means an area emission reduction credit organization in this state.
(5) “Regional council of governments” means a council of governments designated as the metropolitan planning organization or a metropolitan planning organization in the event the council of governments is not so designated.