What about fuels?

Clean fuels are needed to achieve clean air. The CAA thus provides for:

• The complete phase out of leaded gasoline before the end of the year 2000;
• The lowering of the sulfur content of industrial and automotive diesel, respectively, from 0.5% to 0.3% and from 0.2% to 0.05%.
• The lowering of aromatics in unleaded gasoline from 45% maximum to 35% maximum; and the lowering of benzene in unleaded gasoline from 4% maximum to 2% maximum.

   Further improvement on the fuel quality, excluding cleaner alternative fuels, will be spearheaded by the Department of Energy.

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Lifted from:

Department of Environment and Natural Resources. (2003, August). Primer on the Clean Air Act. Diliman: DENR-Public Affairs Office.