Fuel type | Emission limit for heat input | |
ng/J | lb/MMBtu | |
Gaseous fuels: | ||
Coal-derived fuels | 210 | 0.50 |
All other fuels | 86 | 0.20 |
Liquid fuels: | ||
Coal-derived fuels | 210 | 0.50 |
Shale oil | 210 | 0.50 |
All other fuels | 130 | 0.30 |
Solid fuels: | ||
Coal-derived fuels | 210 | 0.50 |
Any fuel containing more than 25%, by weight, coal refuse | (1) | (1) |
Any fuel containing more than 25%, by weight, lignite if the lignite is mined in North Dakota, South Dakota, or Montana, and is combusted in a slag tap furnace2 | 340 | 0.80 |
Any fuel containing more than 25%, by weight, lignite not subject to the 340 ng/J heat input emission limit2 | 260 | 0.60 |
Subbituminous coal | 210 | 0.50 |
Bituminous coal | 260 | 0.60 |
Anthracite coal | 260 | 0.60 |
All other fuels | 260 | 0.60 |
1 Exempt from NOX standards and NOX monitoring requirements.
2 Any fuel containing less than 25%, by weight, lignite is not prorated but its percentage is added to the percentage of the predominant fuel.
Where:
En = Applicable NOX emissions limit when multiple fuels are combusted simultaneously (ng/J heat input);
w = Percentage of total heat input derived from the combustion of fuels subject to the 86 ng/J heat input standard;
x = Percentage of total heat input derived from the combustion of fuels subject to the 130 ng/J heat input standard;
y = Percentage of total heat input derived from the combustion of fuels subject to the 210 ng/J heat input standard;
z = Percentage of total heat input derived from the combustion of fuels subject to the 260 ng/J heat input standard; and
v = Percentage of total heat input delivered from the combustion of fuels subject to the 340 ng/J heat input standard.
40 C.F.R. §60.44Da