BTS | Table 4-40: Estimated National Emissions of Carbon Monoxide

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Table 4-40: Estimated National Emissions of Carbon Monoxide

(Million short tons)

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	1970	1975	1980	1985	1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006
TOTAL all sources	204.04	188.40	185.41	176.85	154.19	147.13	140.90	135.90	133.56	126.78	128.86	117.91	115.38	114.54	114.47	106.26	109.24	107.06	104.89	102.72	100.55
Highway vehicles	163.23	153.56	143.83	134.19	110.26	104.98	99.71	94.43	89.16	83.88	78.61	75.85	73.24	68.71	68.06	63.48	62.96	60.74	58.53	56.32	54.10
Off-Highway	11.37	14.33	16.69	19.03	21.45	21.93	22.42	22.90	23.39	23.87	24.36	23.67	23.69	23.32	24.18	24.68	22.39	22.78	23.16	23.54	23.93
Fuel combustion	4.63	4.48	7.30	8.49	5.51	5.86	6.15	5.59	5.52	5.93	4.34	4.33	4.33	5.54	4.78	4.83	5.06	5.09	5.11	5.14	5.17
Industrial processes^a	9.84	7.54	6.95	5.28	4.77	4.62	4.55	4.65	4.61	4.61	3.64	3.80	3.81	2.55	2.63	2.76	2.24	2.27	2.31	2.35	2.39
Waste disposal and recycling	7.06	3.23	2.30	1.94	1.08	1.12	1.14	1.25	1.23	1.19	2.90	2.95	3.12	3.02	1.85	1.85	1.59	1.61	1.63	1.65	1.67
Miscellaneous^b	7.91	5.26	8.34	7.93	11.12	8.62	6.93	7.08	9.66	7.30	15.02	7.32	7.18	11.41	12.96	8.68	14.99	14.57	14.14	13.72	13.30

^aIndustrial processes comprises chemical and allied product manufacturing, metals processing, petroleum and related industries, and other industrial processes; and solvent utilization, storage, and transport.

^bMiscellaneous comprises nonroad gasoline- and diesel-powered construction, industrial, lawn and garden, farm, light-commercial, logging vehicles and other nonroad sources; agriculture and forestry, health services, cooling towers, fugitive dust; and other combustion sources that could not be accurately allocated to specific source categories.

NOTE

Previous edition's data include all on road mobile sources and some nonroad mobile sources, since EPA changed the methodology to estimate emissions, the details of the data is not available, this data set only contains the on road mobile sources.

SOURCE

U.S. Environmental Protection Agency, Clearinghouse for Inventories and Emissions Factors (CHIEF), Current Emission Trends Summaries, Internet website http://www.epa.gov/ttn/chief/trends/index.html as of July 2007.