11. There are a number of different mobile sources of air pollution, some contributing more to pollution than others. 12. About 60 percent of the sources of air pollution come from mobile sources , on-road or off-road vehicles mostly, 13. The revenues from the additional $ 2.00 surcharge are deposited in the District s Mobile Source Incentive Fund. 14. Power plants, even if they burn fossil fuels, are far cleaner than mobile sources such as locomotive engines. 15. The E . P . A . differentiates between mobile sources by classifying them as either on-road vehicles or non-road vehicles. 16. These are known as mobile sources , and they account for 36 percent of all nitrogen oxides released into the air here. 17. The Clinton administration invested in fuel cell technology, both for mobile sources of pollution like cars and stationary sources like buildings. 18. On the federal level, many different agencies are responsible for regulating, or at least creating policies to limit, pollution from mobile sources . 19. The agency developed the program, the Mobile Source Emissions Factor Model, known as Mobile, in 1978 and has revised it intermittently since then. 20. We can't ignore mobile sources either, and the EPA should push ahead with low-sulfur in gas and Tier II ( lower-polluting ) vehicles.
