Figure: 30 TAC §117.1310(a)(1)(D)(ii)
Where:
Eavg = system-wide heat input weighted average NOX emission rate, lb/MMBtu;
Ei = hourly average NOX emission rate for utility boiler i, lb/MMBtu;
i = each utility boiler in the system;
N = the total number of utility boilers in the system; and
Hi = hourly average heat input for utility boiler i, MMBtu/hr.