§ 60.44b Standard for nitrogen oxides (NO2).
(a) Except as provided under paragraphs (k) and (l) of this section, on and after the date on which the initial performance test is completed or is required to be completed under § 60.8, whichever date comes first, no owner or operator of an affected facility that is subject to the provisions of this section and that combusts only coal, oil, or natural gas shall cause to be discharged into the atmosphere from that affected facility any gases that contain NOX (expressed as NO2) in excess of the following emission limits:
| Fuel/steam generating unit type | Nitrogen oxide emission limits (expressed as NO2) heat input | |
|---|---|---|
| ng/J | lb/MMBTu | |
| (1) Natural gas and distillate oil, except (4): | ||
| (i) Low heat release rate | 43 | 0.10 |
| (ii) High heat release rate | 86 | 0.20 |
| (2) Residual oil: | ||
| (i) Low heat release rate | 130 | 0.30 |
| (ii) High heat release rate | 170 | 0.40 |
| (3) Coal: | ||
| (i) Mass-feed stoker | 210 | 0.50 |
| (ii) Spreader stoker and fluidized bed combustion | 260 | 0.60 |
| (iii) Pulverized coal | 300 | 0.70 |
| (iv) Lignite, except (v) | 260 | 0.60 |
| (v) Lignite mined in North Dakota, South Dakota, or Montana and combusted in a slag tap furnace | 340 | 0.80 |
| (vi) Coal-derived synthetic fuels | 210 | 0.50 |
| (4) Duct burner used in a combined cycle system: | ||
| (i) Natural gas and distillate oil | 86 | 0.20 |
| (ii) Residual oil | 170 | 0.40 |
(b) Except as provided under paragraphs (k) and (l) of this section, on and after the date on which the initial performance test is completed or is required to be completed under § 60.8, whichever date comes first, no owner or operator of an affected facility that simultaneously combusts mixtures of only coal, oil, or natural gas shall cause to be discharged into the atmosphere from that affected facility any gases that contain NOX in excess of a limit determined by the use of the following formula:
Where:
(c) Except as provided under paragraph (d) and (l) of this section, on and after the date on which the initial performance test is completed or is required to be completed under § 60.8, whichever date comes first, no owner or operator of an affected facility that simultaneously combusts coal or oil, natural gas (or any combination of the three), and wood, or any other fuel shall cause to be discharged into the atmosphere any gases that contain NOX in excess of the emission limit for the coal, oil, natural gas (or any combination of the three), combusted in the affected facility, as determined pursuant to paragraph (a) or (b) of this section. This standard does not apply to an affected facility that is subject to and in compliance with a federally enforceable requirement that limits operation of the affected facility to an annual capacity factor of 10 percent (0.10) or less for coal, oil, natural gas (or any combination of the three).