Where:
E = Emissions rate of NOX from the duct burner, ng/J (lb/MMBtu) heat input;
Esg = Combined effluent emissions rate, in ng/J (lb/MMBtu) heat input using appropriate F factor as described in Method 19 of appendix A of this part;
Hg = Heat input rate to the combustion turbine, in J/hr (MMBtu/hr);
Hb = Heat input rate to the duct burner, in J/hr (MMBtu/hr); and
Eg = Emissions rate from the combustion turbine, in ng/J (lb/MMBtu) heat input calculated using appropriate F factor as described in Method 19 of appendix A of this part.
40 C.F.R. §60.46b