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EPA proposes first US greenhouse gas emissions standards for aircraft

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The US Environmental Protection Agency (EPA) proposed greenhouse gas (GHG) emissions standards for airplanes used in commercial aviation and large business jets. The proposed EPA standards would address subsonic jet aircraft with a maximum takeoff mass (MTOM) greater than 5,700 kilograms and subsonic propeller-driven airplanes (e.g.,

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EPA proposes endangerment finding for lead emissions from aircraft engines that operate on leaded fuel

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The US Environmental Protection Agency (EPA) announced a proposed determination that emissions of lead from aircraft that operate on leaded fuel cause or contribute to air pollution that may reasonably be anticipated to endanger public health and welfare. Jet aircraft used for commercial transport do not operate on a fuel containing lead.

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EPA proposes stringent new emissions standards for light-, medium-, heavy-duty vehicles for MY 2027 and beyond

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The US Environmental Protection Agency (EPA) announced two new proposed federal emissions standards spanning light-, medium- and heavy-duty vehicles for model year 2027 and beyond. The light-duty vehicle category includes passenger cars and light trucks consistent with previous EPA criteria pollutant and GHG rules.

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EPA finalizes ICAO-aligned GHG emissions standards for aircraft; “no costs and no emission reductions”

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The US Environmental Protection Agency (EPA) finalized greenhouse gas (GHG) emissions standards for airplanes used in commercial aviation and large business jets. The EPA is adopting the ICAO CO 2 metric, which measures fuel efficiency, for demonstrating compliance with the GHG emission standards.

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In-use emissions report for Achates heavy-duty OP diesel shows substantial margin to most stringent EPA NOx proposed regulation

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In addition, the Environmental Protection Agency (EPA) recently released its proposed rule to lower NO x emissions levels for commercial vehicles across the entire United States. Option 1 from EPA is similar in many respects to the CARB regulation. Earlier post.)

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California ARB petitions US EPA for “Tier 5” stricter locomotive emissions standards

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In an effort to accelerate the movement to zero- or near-zero emission locomotives, the California Air Resources Board (ARB) has petitioned the US EPA take action to adopt more stringent emission standards for locomotives. Tier 4 locomotives are commercially available and are now being phased in. Source: ARB. Click to enlarge.

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EPA seeks to adopt emission standards for large commercial aircraft

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The US Environmental Protection Agency (EPA) is proposing to adopt new air pollution standards for engines with rated thrusts greater than 26.7 kilonewtons (kN) used primarily in large commercial aircraft, including 737s, 747s, and 767s. Second, EPA is proposing amendments to the emission measurement procedures.

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