EPA slashes sulfur levels

As part of a wide range of initiatives to reduce engine emissions from trucks and buses, late in December the EPA mandated a reduction in the sulfur content of highway diesel fuel from 500 ppm to 15 ppm by 2006. The low-sulfur fuel requirement is critical to the EPA's effort to put in place more stringent diesel engine emissions standards by 2007, aimed at reducing particulate matter (PM) by 90% and significantly lowering nitrogen oxide (NOx) as well. EPA said its action will reduce 2.6-million tons of smog-causing NOx each year once the program is fully implemented. Emissions ...

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October 2009

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