39601.7.
(a) The state board shall adopt regulations to improve air quality in population centers located in valleys.(b) Each district shall implement the regulations adopted pursuant to subdivision (a) with regard to stationary sources located within its jurisdiction.
(c) Subdivisions (a) and (b) shall become inoperative on January 1, 2029.
(d) (1) The state board shall submit a report to the Legislature on or before January 1, 2030, summarizing the regulations adopted pursuant to subdivision (a) and describing any air quality improvements resulting from those regulations.
(2) The report to be submitted pursuant to paragraph (1) shall be submitted in compliance with Section 9795 of the Government Code.
(3) The state board shall also submit the report required pursuant to paragraph (1) to the Assembly Committee on Natural Resources and the Senate Committee on Environmental Quality.
(e) For purposes of this section, “valley” means an elongate depression of the earth's surface usually between ranges of hills or mountains.
(f) This section shall remain in effect only until January 1, 2034, and as of that date is repealed.