You must calculate and report the annual CO2 emissions from each hydrogen production process unit using the procedures specified in either paragraph (a) or (b) of this section.
Where:
CO2 = Annual CO2 process emissions arising from fuel and feedstock consumption (metric tons/yr).
Fdstkn = Volume or mass of the gaseous fuel or feedstock used in month n (scf (at standard conditions of 68 °F and atmospheric pressure) or kg of fuel or feedstock).
CCn = Average carbon content of the gaseous fuel or feedstock for month n (kg carbon per kg of fuel or feedstock).
MWn = Average molecular weight of the gaseous fuel or feedstock for month n (kg/kg-mole). If you measure mass, the term "MWn/MVC" is replaced with "1".
MVC = Molar volume conversion factor (849.5 scf per kg-mole at standard conditions).
k = Months in the year.
44/12 = Ratio of molecular weights, CO2 to carbon. 0.001 = Conversion factor from kg to metric tons.
Where:
CO2 = Annual CO2 emissions arising from fuel and feedstock consumption (metric tons/yr).
Fdstkn = Volume or mass of the liquid fuel or feedstock used in month n (gallons or kg of fuel or feedstock).
CCn = Average carbon content of the liquid fuel or feedstock, for month n (kg carbon per gallon or kg of fuel or feedstock).
k = Months in the year.
44/12 = Ratio of molecular weights, CO2 to carbon.
0.001 = Conversion factor from kg to metric tons.
Where:
CO2 = Annual CO2 emissions from fuel and feedstock consumption (metric tons/yr).
Fdstkn = Mass of solid fuel or feedstock used in month n (kg of fuel or feedstock).
CCn = Average carbon content of the solid fuel or feedstock, for month n (kg carbon per kg of fuel or feedstock).
k = Months in the year.
44/12 = Ratio of molecular weights, CO2 to carbon.
0.001 = Conversion factor from kg to metric tons.
40 C.F.R. §98.163