| Fire & | Fugitive dust | Natural | |||||||
| Agricul- | other | Un- | Con- | Total | sources | Total | |||
| ture and | com- | paved | Paved | struc- | fugitive | (wind | all | ||
| Year | forestry | bustion | roads | roads | tion | Other | dust | erosion) | sources |
| million tons | |||||||||
| 1989 | 7.320 | 0.912 | 11.798 | 5.769 | 11.269 | 0.392 | 29.229 | 12.101 | 49.562 |
| 1990 | 5.292 | 1.181 | 11.234 | 2.248 | 4.249 | 0.336 | 18.069 | 2.092 | 26.635 |
| 1991 | 5.234 | 0.924 | 11.206 | 2.399 | 4.092 | 0.377 | 18.076 | 2.077 | 26.311 |
| 1992 | 5.017 | 0.770 | 10.918 | 2.423 | 4.460 | 0.369 | 18.171 | 2.227 | 26.186 |
| 1993 | 4.575 | 0.801 | 11.430 | 2.462 | 4.651 | 0.409 | 18.954 | 0.509 | 24.838 |
| 1994 | 4.845 | 1.053 | 11.370 | 2.538 | 5.245 | 0.589 | 19.722 | 2.160 | 27.780 |
| 1995 | 4.902 | 0.850 | 10.362 | 2.409 | 3.654 | 0.586 | 17.013 | 1.146 | 23.913 |
| 1996 | 4.905 | 1.254 | 12.059 | 2.390 | 3.578 | 0.646 | 18.675 | 5.307 | 30.143 |
| 1997 | 4.971 | 1.313 | 12.530 | 2.538 | 4.022 | 0.713 | 19.804 | 5.307 | 31.396 |
| 1998 | 4.970 | 1.018 | 12.668 | 2.618 | 4.545 | 0.788 | 20.619 | 5.307 | 31.916 |
Source: U.S. Environmental Protection Agency, Office of Air Quality Planning and Standards, National Air Quality and Emissions Trends Report, 1998, Table A-7 (EPA, OAQPS, Research Triangle Park, NC, 2000), and earlier reports in this series.
Notes: Fugitive dust category “Other” includes 0.001 million tons of wind erosion for each year 1990 through 1998. Totals may not agree with sum of components due to independent rounding.
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