BTS | Table 4-42 . Estimated National Emissions of Volatile Organic Compounds (Million short tons)

Bureau of Transportation Statistics (BTS) - Research and Innovative Technology Administration (RITA) - United States Department of Transportation (USDOT, US DOT or DOT)

ABOUT RITA | CONTACT US | PRESS ROOM | CAREERS | SITE MAP

Data and Statistics

Bookstore

Programs

About BTS

Upcoming Press Releases

External Links

BTS Home > Publications > National Transportation Statistics > 2000

Table 4-42 . Estimated National Emissions of Volatile Organic Compounds (Million short tons)

Excel | CSV

	1970	1975	1980	1985	1986	1987	1988	1989	1990	1991	1992	1993	1994	1995	1996	1997	1998
Transportation
On-Road vehicles	12.97	10.55	8.98	9.38	8.87	8.48	8.29	7.19	6.31	6.50	6.07	6.10	6.40	5.70	5.49	^R5.33	5.33
Off-Road
Aircraft	0.10	0.12	0.15	0.17	0.17	0.18	0.19	0.19	0.18	0.18	0.18	0.18	0.18	0.18	0.18	^R0.18	0.18
Railroads	0.02	0.03	0.03	0.04	0.04	0.04	0.04	0.04	0.05	0.05	0.05	0.05	0.05	0.05	0.05	0.05	0.05
Marine vessels	0.01	0.01	^R0.02	^R0.02	^R0.02	0.03	^R0.03	^R0.03	^R0.03	^R0.03	^R0.03	^R0.03	^R0.04	^R0.03	^R0.03	^R0.03	0.04
Other off-road^a	^R0.87	^R0.93	^R0.98	^R1.03	^R1.02	^R1.01	^R1.01	^R0.96	^R0.92	^R0.92	^R0.91	^R0.91	0.92	^R0.93	^R0.92	^R0.92	0.92
Total transportation	^R13.97	^R11.64	^R10.16	^R10.64	^R10.12	^R9.74	^R9.56	^R8.41	^R7.49	^R7.68	^R7.24	^R7.27	7.59	^R6.89	^R6.67	^R6.51	6.52
Nontransportation
Fuel combustion	0.72	0.66	1.05	1.57	1.40	1.28	1.36	1.37	1.01	1.08	1.12	0.99	0.99	1.07	^R1.04	^R0.90	0.89
Industrial processes^b	12.33	11.10	12.10	9.50	9.35	^R9.58	9.90	9.81	9.01	9.18	9.37	9.53	9.69	9.71	^R8.17	^R8.39	8.02
Waste disposal and recycling	1.98	0.98	0.76	0.98	0.97	0.95	0.96	0.94	0.99	1.00	1.01	1.05	1.05	1.07	^R0.42	^R0.43	0.43
Miscellaneous^{c, R}	^R1.98	^R1.71	^R2.22	^R1.75	^R1.78	^R1.92	^R2.54	^R1.97	^R2.42	^R2.15	^R1.91	^R2.01	^R2.21	^R2.07	^R2.43	^R2.64	2.05
Total nontransportation	^R17.02	^R14.45	^R16.13	^R13.80	^R13.50	^R13.73	^R14.76	^R14.09	^R13.44	^R13.43	^R13.42	^R13.59	^R13.95	^R13.93	^R12.07	^R12.37	11.40
TOTAL all sources^R	^R30.98	^R26.08	^R26.34	^R24.43	^R23.62	^R23.47	^R24.31	^R22.51	20.94	^R21.10	^R20.66	^R20.87	^R21.54	^R20.82	^R18.74	^R18.88	17.92

^a Other off-road comprises nonroad gasoline- and diesel-powered recreational, airport service and railway maintenance vehicles, and recreational marine vessels.
^b Industrial processes comprises chemical and allied product manufacturing, metals processing, petroleum and related industries, and other industrial processes; and solvent utilization, storage, and transport.
^cMiscellaneous comprises nonroad gasoline- and diesel-powered construction, industrial, lawn and garden, farm, light-commercial, logging vehicles, and other non-road sources; geogenic sources, catastrophic and accidental releases, health services, cooling towers, nontransportation-related fugitive dust, agriculture and forestry, structural fires, agriculture fires, slash/prescribed burning, forest wildfires, and other combustion sources that could not be accurately allocated to specific source categories.

KEY: R = revised.

NOTES: The methodologies used to estimate emissions constantly evolve and undergo major changes. These improved methods are often used to revise estimates for previous years. Therefore, some estimates in this table may not match estimates produced in previous reports, and some trends may not be consistent across years in which major methodology changes have occurred. Numbers may not add to totals due to rounding.

SOURCES: U.S. Environmental Protection Agency, National Air Pollutant Emission Trends: 1900-1998 (EPA-454/R-00-002) (Research Triangle Park, NC: March 2000), table A-3; also available at Internet website www.epa.gov/ttn/chief/trends98/emtrnd.html, as of Aug. 8, 2000.