California Code
CHAPTER 10 - District Plans to Attain State Ambient Air Quality Standards
Section 40921.

40921. For the purposes of Sections 40918, 40919, 40920, and 40920.5, the designation of a district’s air pollution as “moderate,” “serious,” “severe,” or “extreme” for an area which is a receptor of transported air pollutants shall be based on violations of state ambient air quality standards which would occur without regard to the transport contribution.

(Amended by Stats. 1992, Ch. 945, Sec. 9. Effective January 1, 1993.)