Washington Administrative Code
Title - Northwest Clean Air Agency
400 - STANDARDS
Sec2 428 - HAZARDOUS AIR POLLUTANTS

Universal Citation: WA Admin Code 428

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

428.1 Chlorine concentrations in the ambient air shall not exceed one (1.0) part per million on a one (1) hour time weighted average.

428.11 Chlorine concentration in the ambient air shall not exceed seven (7.0) parts per million for more than 5 minutes.

428.2 Ambient emissions standards for mercury. Emissions to the atmosphere from sources including the processing of mercury or to recover mercury, chlor-alkali cells to produce chlorine gas and alkali metal hydroxide, shall not exceed 2300 grams of mercury per twenty-four (24) hour period.

428.21 Testing methods shall be in accordance with the US-EPA CFR, Title 40, Chapter 61, National Emission Standards for Hazardous Air Pollutants, Appendix B--Test Methods of other test methods approved by the Control Officer.

428.3 Formaldehyde in the ambient air shall not exceed five hundredths of a part per million by volume (0.05 ppmv) 24-hour average concentration.

428.4 Ambient standards for other hazardous or toxic air pollutants may be adopted by the Control Officer based upon best available information on health risk.

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