{longname} Q310. For subpart AA in e-GGRT, on the screen to enter CO2 emissions from makeup chemicals, why are there two boxes to check?
{longname}

A310. In accordance with the procedures for missing data for subpart AA  (section 98.275), owners or operators are required to keep records of  the procedures used to account for missing data. and Thethe two boxes to check  in e-GGRT are provided to give the user the opportunity to indicate  indicate if a substitute value was used for  the annual quantity of CaCO3 and Na2CO3 to calculate the CO2 emissions  from makeup chemicals. Similarly, other subpart AA screens provide check  boxes to indicate if substitute values were used for the mass of spent  liquor solids used to calculate biogenic CO2, CH4 and N2O emissions  using equations AA-1 and AA-2.

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Source: This question and answer was derived from a Legacy FAQ

Approval / Publishing History: Version 1 

Expiration : none 

Relevant Subparts:  Subpart AA
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