(a) A complete record of all measured parameters used in the GHG emission calculations
is required. Therefore, whenever a quality-assured value of a required parameter is unavailable,
a substitute data value for the missing parameter will be used in the calculations
as specified in paragraph (b) of this section.
(b) Replace missing data on the emissions of cover or carrier gases by multiplying magnesium
production during the missing data period by the average cover or carrier gas usage
rate from the most recent period when operating conditions were similar to those for
the period for which the data are missing. Calculate the usage rate for each cover or carrier gas using Equation T–4 of this
RGHG = The usage rate for a particular cover or carrier gas over the period of comparable
operation (metric tons gas/metric ton Mg).
CGHG = The consumption of that cover or carrier gas over the period of comparable operation
Mg = The magnesium produced or fed into the process over the period of comparable
operation (metric tons).
0.001 = Conversion factor from kg to metric tons.
(c) If the precise before and after weights are not available, it should be assumed that
the container was emptied in the process (i.e., quantity purchased should be used,
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