Greenhouse gases

Control of Air Pollution From Airplanes and Airplane Engines: GHG Emission Standards and Test Procedures

The Environmental Protection Agency (EPA) is adopting greenhouse gas (GHG) emission standards applicable to certain classes of engines used by certain civil subsonic jet airplanes with a maximum takeoff mass greater than 5,700 kilograms and by certain civil larger subsonic propeller-driven airplanes with turboprop engines having a maximum takeoff mass greater than 8,618 kilograms.

Publication Date: 
Monday, January 11, 2021 - 4:00am

Determination of Attainment by the Attainment Date for the Salt Lake City, Utah and Provo, Utah 2006 24-Hour PM2.5

The Environmental Protection Agency (EPA) has determined that the Salt Lake City, Utah and Provo, Utah Serious nonattainment areas (NAAs) attained the 2006 24-hour fine particulate matter (PM<INF>2.5</INF>) National Ambient Air Quality Standards (NAAQS) by the December 31, 2019 ``Serious'' area attainment date. The determination is based on quality-assured, quality-controlled and certified ambient air quality monitoring data from 2017 through 2019, available in the EPA's Air Quality System (AQS) database.

Publication Date: 
Tuesday, November 17, 2020 - 4:00am