Washington Administrative Code
Title 173 - Ecology, Department of (See also Titles 197, 317, 372, and 508)
Chapter 173-476 - Ambient air quality standards
Section 173-476-150 - Ambient air quality standard for ozone
Universal Citation: WA Admin Code 173-476-150
Current through Register Vol. 24-06, March 15, 2024
(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.
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