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US EPA proposes amendments to new stationary engine emission standards

12 June 2010

The US Environmental Protection Agency (EPA) proposed amendments to emission standards, known as New Source Performance Standards (NSPS), for certain categories of stationary diesel and gas-fired engines. The standards for stationary diesel engines were originally adopted in July 2006 and those for SI stationary engines in January 2008.

The proposal would revise emission limits for NOx, PM, and HC from large stationary diesel engines. Specifically standards for compression ignition engines with a displacement of 10 to 30 liters per cylinder would be strengthened to the same levels required by EPA regulations for similar size marine diesel engines.

The proposed amendments also would revise the standards for large stationary compression ignition engines with a displacement greater than 30 liters per cylinder in order to align them with standards for similar marine engines.

The EPA also proposed:

EPA will accept comments on the proposed amendments for 60 days after publication in the Federal Register.

Source: US EPA