tailieunhanh - Smog - A REPORT TO THE PEOPLE Episode 2

Tham khảo tài liệu 'smog - a report to the people episode 2', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | private citizens and groups can sue under the Act to force compliance with federal ambient air quality standards. In contrast to these new federal requirements the Los Angeles County Air Pollution Control District stated in its 1971 annual report3 that the present strâtssy would bring flit Quality up to the California state standards by 1990 Thus the present California control program places clean air so far in the future that any improvements in air quality might well be overtaken by population and economic growth long before the distant target date is reached. But to reduce violations of air quality standards from the present level of 241 days per year for photochemical oxidants for example to literally one day per year within the period allowed by the Clean Air Act would require drastic curtailments in the rates of consumption of gasoline natural gas and residual oil in the Basin and a sudden brake on economic activity. The most effective practical approach must lie somewhere in between these two extremes. The approach adopted in this report occupies this middle ground. We recognize that the South Coast Air Basin in California is faced with a uniquely difficult air pollution control problem. Because of its special meteorology and topography and the enormous rate of consumption of fossil fuels 4 even the best technology likely to be available in this decade would not reduce the average number of days per year on which State air quality standards on photochemical oxidants are violated below a lower bound of 10-15 We chose for detailed study a particular control strategy called EQL Strategy 1 designed to drive toward these lower limits as rapidly as feasible in the spirit if not the letter of the Clean Air Act of 1970 as amended .6 In summary EQL Strategy 1 is based partly on new technical control measures to reduce emissions from stationary sources and used motor But even in the short run 1972-1977 we found it necessary to combine these technical