Chlorine concentrations in the ambient air shall not exceed one (1.0) part per million on a one (1) hour time weighted average.
Chlorine concentration in the ambient air shall not exceed seven (7.0) parts per million for more than 5 minutes.
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.
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.
Formaldehyde in the ambient air shall not exceed five hundredths of a part per million by volume (0.05 ppmv) 24-hour average concentration.
Ambient standards for other hazardous or toxic air pollutants may be adopted by the Control Officer based upon best available information on health risk.
AMENDED: November 14, 1984, April 14, 1993, November 8, 2007