(

a) Except as provided in subdivision (b), nothing in this division shall limit or expand the existing authority of any district. (

b) A district shall not adopt or implement an emission reduction rule for carbon dioxide from stationary sources that are also subject to a market-based compliance mechanism adopted by the state board pursuant to subdivision (

c) of

Section 38562. (

c) Nothing in this

section affects in any manner the authority of a district to adopt or implement, as applicable, any of the following:

(1) A rule, regulation, standard, or requirement authorized or required for a district to adopt under Division 26 (commencing with

Section 39000) for purposes other than to reduce carbon dioxide from sources subject to a market-based compliance mechanism adopted by the state board pursuant to subdivision (

c) of

Section 38562.

(2) A rule, regulation, standard, or requirement authorized pursuant to a law affecting emissions associated with landfills, refrigerants, natural gas or methane, volatile organic compounds, or a rule required to comply with the federal Clean Air Act (42 U.S.C.

Sec. 7401 et seq.) or regulations implementing that act.

(3) A rule, regulation, standard, or requirement authorized pursuant to a law to reduce vehicle trips, vehicle miles traveled, parking, or vehicular air emissions, including, but not limited to, a rule adopted pursuant to

Chapter of the Statutes of 2008.

(4) A rule, regulation, standard, or requirement established pursuant to the California Environmental Quality Act (Division 13 (commencing with

Section 21000) of the Public Resources Code).

(5) A rule, regulation, standard, or requirement adopted by any state agency. (

d) This

section shall become inoperative if the state board repeals the market-based compliance mechanism adopted by the state board pursuant to subdivision (

c) of

Section 38562. The state board shall notify the Secretary of State if this

section becomes inoperative. (

e) This

section shall remain in effect only until January 1, 2046, and as of that date is repealed.