Ap42 Emission Factors: lpg_combustion_boiler
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 |
|---|---|---|---|---|---|---|---|---|---|
| lpg_combustion_boiler | lpg_boiler_CO | 1.5 | 1.5-1 | B | 0.102 | LPG boiler CO; 102 lb/1000 gal | CO | 1-02-007-01 | lb/1000gal |
| lpg_combustion_boiler | lpg_boiler_NOx | 1.5 | 1.5-1 | B | 0.208 | Uncontrolled LPG (propane) boiler; 208 lb/1000 gal; HHV propane 91,500 Btu/gal → 2.27 lb/MMBtu | NOx | 1-02-007-01 | lb/1000gal |
| lpg_combustion_boiler | lpg_boiler_PM10 | 1.5 | 1.5-1 | B | 0.15 | LPG boiler PM10 uncontrolled; 0.15 lb/1000 gal | PM10 | 1-02-007-01 | lb/1000gal |
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