Contribution of Emissions by Vehicle Classisifcation Compared to Total Stationary and Mobile Sources (Thousand Short Tons, 2002)
Source of Category |
NOx |
CO |
VOC |
NH3 |
SO2 |
PM10 |
PM2.5 |
|||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| TOTAL ALL SOURCES | 21,102 | 112,049 | 16,544 | 3,712 | 15,353 | 22, 54 | 6,803 | |||||||
| MOBILE SOURCES TOTAL | 11, 451 | 54.26% | 86, 611 | 77.30% | 7, 231 | 43.71% | 290 | 7.81% | 696 | 4.53% | 515 | 2.32% | 434 | 6.38% |
| HIGHWAY VEHICLES | 7, 365 | 34.90% | 62,161 | 55.48% | 4,543 | 27.46% | 287 | 7.73% | 275 | 1.79% | 204 | 0.92% | 149 | 2.19% |
| Light-Duty Gas Vehicles & Motorcycles | 2, 166 | 10.26% | 34, 400 | 30.70% | 2, 496 | 15.09% | 184 | 4.96% | 93 | 0.61% | 52 | 0.23% | 27 | 0.40% |
| Light-Duty Gas Trucks | 1, 401 | 6.64% | 24, 191 | 21.59% | 1, 638 | 9.90% | 92 | 2.48% | 65 | 0.42% | 30 | 0.14% | 16 | 0.24% |
| Heavy-Duty Gas Vehicles | 404 | 1.91% | 2, 554 | 2.28% | 201 | 1.21% | 4 | 0.11% | 12 | 0.08% | 9 | 0.04% | 7 | 0.10% |
| Diesels | 3,395 | 16.09% | 1, 016 | 0.91% | 208 | 1.26% | 6 | 0.16% | 105 | 0.68% | 113 | 0.51% | 99 | 1.45% |
| OFF-HIGHWAY | 4, 086 | 19.36% | 24, 450 | 21.82% | 2, 688 | 16.25% | 3 | 0.08% | 420 | 2.74% | 311 | 1.40% | 285 | 4.19% |
| Non-Road Gasoline | 211 | 1.00% | 21, 940 | 19.58% | 2, 342 | 14.16% | 1 | 0.03% | 8 | 0.05% | 72 | 0.32% | 67 | 0.98% |
| Non-Road Diesel | 1, 600 | 7.58% | 872 | 0.78% | 188 | 1.14% | 2 | 0.05% | 198 | 1.29% | 169 | 0.76% | 155 | 2.28% |
| Aircraft | 81 | 0.38% | 257 | 0.23% | 21 | 0.13% | NA | 8 | 0.05% | 3 | 0.01% | 2 | 0.03% | |
| Marine Vessels | 1, 011 | 4.79% | 133 | 0.12% | 32 | 0.19% | NA | 160 | 1.04% | 44 | 0.20% | 40 | 0.59% | |
| Railroads | 889 | 4.21% | 88 | 0.08% | 35 | 0.21% | NA | 47 | 0.31% | 22 | 0.10% | 20 | 0.29% | |
| Other | 295 | 1.40% | 1, 160 | 1.04% | 71 | 0.43% | 0 | 0 | 0.00% | 1 | 0.00% | 1 | 0.01% | |
| ROAD DUST | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | 3,951 | 17.83% | 694 | 10.05% |
Source: National Emissions Inventory Air Pollutant Emissions Trends Data, http://www.epa.gov/ttn/chief/trends/index.html#tables
