Bush Backs Clean Diesel in Construction, Tractors
The Bush administration has approved new rules to cut NOx and particulate matter levels of from construction, agricultural and industrial diesel-powered equipment by over 90% between 2008 and 2015. In 2008, the smallest engines from those classes of equipment must adhere to the new rules, followed by the largest engines in 2015. The sulfur levels in the diesel fuel used for those engines will be reduced