You must calculate and report the annual process CO2 emissions from each soda ash manufacturing line using the procedures specified in paragraph (a) or (b) of this section.
Where:
Ek = Annual CO2 process emissions from each manufacturing line, k (metric tons).
(ICT)n = Inorganic carbon content (percent by weight, expressed as a decimal fraction) in trona input, from the carbon analysis results for month n. This represents the ratio of trona to trona ore.
(ICsa)n = Inorganic carbon content (percent by weight, expressed as a decimal fraction) in soda ash output, from the carbon analysis results for month n. This represents the purity of the soda ash produced.
(Tt)n = Mass of trona input in month n (tons).
(Tsa)n = Mass of soda ash output in month n (tons).
2000/2205 = Conversion factor to convert tons to metric tons.
0.097/1 = Ratio of ton of CO2 emitted for each ton of trona.
0.138/1 = Ratio of ton of CO2 emitted for each ton of soda ash produced.
Where:
ERCO2 = CO2 mass emission rate (metric tons/hour).
CCO2 = Hourly CO2 concentration (percent CO2) as determined by § 98.294(c) .
10000 = Parts per million per percent
2.59 * 10-9 = Conversion factor (pounds-mole/dscf/ppm).
44 = Pounds per pound-mole of carbon dioxide.
Q = Stack gas volumetric flow rate per minute (dscfm).
60 = Minutes per hour
4.53 * 10-4 = Conversion factor (metric tons/pound)
Where:
EFCO2 = CO2 emission factor (metric tons CO2/metric ton of process vent flow from mine water stripper/evaporator).
ERCO2 = CO2 mass emission rate (metric tons/hour).
Vt = Process vent flow rate from mine water stripper/evaporator during annual performance test (pounds/hour).
4.53 * 10-4 = Conversion factor (metric tons/pound)
Where:
Ek = Annual CO2 process emissions for each manufacturing line, k (metric tons).
EFCO2 = CO2 emission factor (metric tons CO2/metric ton of process vent flow from mine water stripper/evaporator).
Va = Annual process vent flow rate from mine water stripper/evaporator (thousand pounds/hour).
H = Annual operating hours for the each manufacturing line.
0.453 = Conversion factor (metric tons/thousand pounds).
40 C.F.R. §98.293