Ap42 Emission Factors: natural_gas_boiler_large_tangential
EPA AP-42 Fifth Edition air pollutant emission factors for stationary combustion and area sources — uncontrolled emission factors in lb/MMBtu (combustion) or lb/hp-hr (engines) or lb/VMT (roads) for NOx, CO, SO2, PM10, PM2.5, VOC. Covers natural gas boilers (small <100 MMBtu/hr, large wall-fired >100 MMBtu/hr, large tangential >100 MMBtu/hr), diesel engines (4-stroke, 2-stroke stationary), gasoline engines (4-stroke), bituminous coal (pulverized and stoker), No. 2 distillate and No. 6 residual fuel oil, wood combustion boilers, LPG boilers, fugitive dust (construction, unpaved roads, material handling), and painting/coating VOC. Sources: EPA AP-42 5th Ed. Chapters 1.1, 1.3, 1.4, 1.5, 1.6, 3.3, 4.2, 13.2.2, 13.2.4; EPA WebFIRE database; 40 CFR Part 51 Appendix S.
| source category | record id | ap42 section | ap42 table | ef rating | emission factor | notes | pollutant | scc code | unit |
|---|---|---|---|---|---|---|---|---|---|
| natural_gas_boiler_large_tangential | ng_boiler_large_tang_CO | 1.4 | 1.4-1 | B | 0.082 | Large tangential-fired boiler | CO | 1-02-006-03 | lb/MMBtu |
| natural_gas_boiler_large_tangential | ng_boiler_large_tang_NOx | 1.4 | 1.4-1 | B | 0.18 | Uncontrolled; large tangential-fired field-erected boilers >100 MMBtu/hr | NOx | 1-02-006-03 | lb/MMBtu |
| natural_gas_boiler_large_tangential | ng_boiler_large_tang_PM10 | 1.4 | 1.4-1 | B | 0.0076 | Large tangential-fired; filterable + condensable | PM10 | 1-02-006-03 | lb/MMBtu |
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