If a controlled emission factor is used to calculate air emissions, is a control efficiency percentage also entered?
Yes. A “Controlled” emission factor incorporates control equipment efficiencies for emissions of a particular pollutant from a particular process. Providing the control efficiency, as well as the control equipment, allows us to cross-check that the correct factor has been used and that the calculated emissions are correct. Note: Actual emissions, including quantifiable excess emissions, should only be adjusted by the control efficiency percentage if an “Uncontrolled” emission factor is used to quantify emissions. Remember, use the “best available data” at the time the inventory is prepared to report actual annual emissions.
Yes – if it is available. A “Controlled” emission factor incorporates control equipment efficiencies for emissions of a particular pollutant from a particular process. Providing the control efficiency, as well as the control equipment, allows us to cross-check that the correct factor has been used and that the calculated emissions are correct. However, in some cases, such as where the factor is an Manufacturer’s Guarantee that already includes the effect of a control, this field can be left as zero. Note: Actual emissions, including quantifiable excess emissions, should only be adjusted by the control efficiency percentage if an “Uncontrolled” emission factor is used to quantify emissions. Remember, use the “best available data” at the time the inventory is prepared to report all actual annual emissions.
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