Regulatory Impact Analysis: Control of Emissions of Air Pollution from Locomotive Engines and Marine Compression Ignition Engines Less than 30 Liters Per Cylinder.
The Environmental Protection Agency is finalizing a comprehensive three-part program to reduce emissions of particulate matter (PM) and oxides of nitrogen (NOx) from locomotives and marine diesel engines below 30 liters per cylinder displacement. Locomotives and marine diesel engines designed to these more stringent standards will achieve PM reductions of 90 percent and NOx reductions of 80 percent, compared to engines meeting the current Tier 2 standards. These standards will also yield sizeable reductions in emissions of nonmethane hydrocarbons (NMHC), carbon monoxide (CO), and hazardous compounds known as air toxics.
|Office of Air and Radiation|
|Assessment and Standards Division|
|Office of Transportation and Air Quality|
|Regulatory Impact Analysis|