Washington Administrative Code
Title - Northwest Clean Air Agency
400 - STANDARDS
Sec2 422 - NITROGEN OXIDE STANDARDS

Universal Citation: WA Admin Code 422

Current through Register Vol. 24-18, September 15, 2024

422.1 Nitrogen Dioxide. The annual arithmetic means of nitrogen dioxide measured at an ambient air monitoring station shall not exceed: 100 micrograms per cubic meter (0.050 ppm).

422.2 Sampling and analysis for nitrogen oxides shall be as outlined in Section 180.

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