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aStandards are given in mg/m3 corrected to standard conditions (6% O2, standard temperature and pressure—0°C (273 K), 101.3 kPa—on dry flue gas); when converting from lb/million Btu to mg/m3, dry flue gas volume is assumed to be 350 m3/GJ (based on gross heat value). Note that ranges exist because emission standards may vary according to plant type, size, location, construction/commissioning date, boiler configuration, and type of coal used. ^Federal standards only; state standards may be more stringent. Source: McConville, A., An Overview of Air Pollution Emission Standards for Coal-Fired Plants Worldwide, Coal and Slurry Technology Association, Washington, D.C., 1997), pp. 1-12.

aStandards are given in mg/m3 corrected to standard conditions (6% O2, standard temperature and pressure—0°C (273 K), 101.3 kPa—on dry flue gas); when converting from lb/million Btu to mg/m3, dry flue gas volume is assumed to be 350 m3/GJ (based on gross heat value). Note that ranges exist because emission standards may vary according to plant type, size, location, construction/commissioning date, boiler configuration, and type of coal used. ^Federal standards only; state standards may be more stringent. Source: McConville, A., An Overview of Air Pollution Emission Standards for Coal-Fired Plants Worldwide, Coal and Slurry Technology Association, Washington, D.C., 1997), pp. 1-12.

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