Where:
Fd = F factor on dry basis at 0% excess air, dscf/MMBtu.
Xi = mole or volume fraction of each component in the fuel gas.
MEVi = molar exhaust volume, dry standard cubic feet per mole (dscf/mol).
MHCi = molar heat content, Btu per mole (Btu/mol).
1,000,000 = unit conversion, Btu per MMBtu.
Where:
AR = Acceptable range of subsequent ratio determinations, unitless.
RatioAvg = 10-day average total sulfur-to-H2S concentration ratio, unitless.
2.262 = t-distribution statistic for 95-percent 2-sided confidence interval for 10 samples (9 degrees of freedom).
SDev = Standard deviation of the 10 daily average total sulfur-to-H2S concentration ratios used to develop the 10-day average total sulfur-to-H2S concentration ratio, unitless.
Where:
TSFG = Total sulfur concentration, as SO2, in the fuel gas, ppmv.
CSO2 = Concentration of SO2 in the exhaust gas, ppmv (dry basis at 0-percent excess air).
Fd = F factor gas on dry basis at 0-percent excess air, dscf/MMBtu.
HHVFG = Higher heating value of the fuel gas, MMBtu/scf.
40 C.F.R. §60.107a