Wash. Admin. Code § 173-476-150

Current through Register Vol. 24-20, October 15, 2024

Section 173-476-150 - Ambient air quality standard for ozone

(1) The three-year average of the annual fourth highest daily maximum eight-hour average concentration of ozone in the ambient air must not exceed 0.070 ppmv.

(2)Measurement method. The levels of ozone in the ambient air must be measured by:

(a) A FRM based on 40 C.F.R. Part 50, Appendix D and designated according to 40 C.F.R. Part 53 ; or

(b) A FEM designated according to 40 C.F.R. Part 53.

(3)Interpretation method. The interpretation method found in 40 C.F.R. Part 50, Appendix U must be followed.

Wash. Admin. Code § 173-476-150

Adopted by WSR 13-24-010 (Order 12-05), filed 11/21/13, effective 12/22/2013

Amended by WSR 16-12-099, Filed 5/31/2016, effective 7/1/2016