| C. Richard Cothern, N. Phillip Ross - 1993 - 436 páginas
...in a companion report.7 While it is important to recognize that progress has been made, it is also important not to lose sight of the magnitude of the air pollution MILLION METRIC TONS/YEAR THOUSANp UFTWC TONS/VEAH 1970 problem that still remains. About 74 million... | |
| Joe Sherman - 1998 - 239 páginas
...criteria pollutants except nitrogen oxides decreased between 1970 and 1994," the report says. "While progress has been made, it is important not to lose...magnitude of the air pollution problem that still remains. . . .About 62 million people in the United States reside in counties that did not meet a minimum of... | |
| United States. Congress. Senate. Committee on Environment and Public Works - 2002 - 100 páginas
...power plants, we look forward to working with the Congress on a multi-pollutant strategy. Although substantial progress has been made, it is important...magnitude of the air pollution problem that still remains. In 1999, more than 150 million tons of air pollution were released into the air in the United States,... | |
| R. Alan Hedley - 2002 - 257 páginas
...possible to reverse our destructive environmental record. However, the EPA (2000) cautions that "while progress has been made, it is important not to lose sight of the magnitude of the air pollution that still remains." Besides examining the impact of pollution on various aspects of the environment... | |
| 1992 - 144 páginas
...METRIC TONS/YEAR 140 120 100 80 60 40 20 0 250 200 THOUSAND METRIC TONS/YEAR SOX LEAD 1970 G 1991 While progress has been made, it is important not to lose...magnitude of the air pollution problem that still remains. About 86 million people in the US reside in counties which did not meet at least one air quality standard... | |
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