| Combustion turbine type
| Combustion turbine heat input at peak load
(HHV)
| NOX emission standard
|
|---|
| New turbine firing natural gas, electric generating | ≤ 50 MMBtu/h | 42 ppm at 15 percent O2 or 290 ng/J of useful output (2.3 lb/MWh).
|
| New turbine firing natural gas, mechanical drive | ≤ 50 MMBtu/h | 100 ppm at 15 percent O2 or 690 ng/J of useful output (5.5 lb/MWh).
|
| New turbine firing natural gas | > 50 MMBtu/h and ≤ 850 MMBtu/h | 25 ppm at 15 percent O2 or 150 ng/J of useful output (1.2 lb/MWh).
|
| New, modified, or reconstructed turbine firing natural gas | > 850 MMBtu/h | 15 ppm at 15 percent O2 or 54 ng/J of useful output (0.43 lb/MWh)
|
| New turbine firing fuels other than natural gas, electric generating | ≤ 50 MMBtu/h | 96 ppm at 15 percent O2 or 700 ng/J of useful output (5.5 lb/MWh).
|
| New turbine firing fuels other than natural gas, mechanical drive | ≤ 50 MMBtu/h | 150 ppm at 15 percent O2 or 1,100 ng/J of useful output (8.7 lb/MWh).
|
| New turbine firing fuels other than natural gas | > 50 MMBtu/h and ≤ 850 MMBtu/h | 74 ppm at 15 percent O2 or 460 ng/J of useful output (3.6 lb/MWh).
|
| New, modified, or reconstructed turbine firing fuels other than natural gas | > 850 MMBtu/h | 42 ppm at 15 percent O2 or 160 ng/J of useful output (1.3 lb/MWh).
|
| Modified or reconstructed turbine | ≤ 50 MMBtu/h | 150 ppm at 15 percent O2 or 1,100 ng/J of useful output (8.7 lb/MWh).
|
| Modified or reconstructed turbine firing natural gas | > 50 MMBtu/h and ≤ 850 MMBtu/h | 42 ppm at 15 percent O2 or 250 ng/J of useful output (2.0 lb/MWh).
|
| Modified or reconstructed turbine firing fuels other than natural gas | > 50 MMBtu/h and ≤ 850 MMBtu/h | 96 ppm at 15 percent O2 or 590 ng/J of useful output (4.7 lb/MWh).
|
| Turbines located north of the Arctic Circle (latitude 66.5 degrees north), turbines operating at less than 75 percent of peak load, modified and reconstructed offshore turbines, and turbine operating at temperatures less than 0 °F | ≤ 30 MW output | 150 ppm at 15 percent O2 or 1,100 ng/J of useful output (8.7 lb/MWh).
|
| Turbines located north of the Arctic Circle (latitude 66.5 degrees north), turbines operating at less than 75 percent of peak load, modified and reconstructed offshore turbines, and turbine operating at temperatures less than 0 °F | > 30 MW output | 96 ppm at 15 percent O2 or 590 ng/J of useful output (4.7 lb/MWh).
|
| Heat recovery units operating independent of the combustion turbine | All sizes | 54 ppm at 15 percent O2 or 110 ng/J of useful output (0.86 lb/MWh). |