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  2. Regulations for Emissions from Vehicles and Engines

Denial of Requests for Extension of Comment Period: Advance Notice of Proposed Rule: Control of Air Pollution from New Motor Vehicles: Heavy-Duty Engine Standards

Denial of Requests for Extension of Comment Period – six organizations requested that EPA extend the public comment period for the ANPR. EPA sent letters explaining our denial of these requests to each of these organizations.

  • Request for Extension from the American Lung Association (pdf) (84.26 KB, February 13, 2020)
  • Letter from the EPA Office of Air and Radiation Principal Deputy Assistant Administrator Anne L. Idsal to the American Lung Association (pdf) (157.86 KB, February 18, 2020)
  • Request for Extension from the Environmental Defense Fund (pdf) (685.4 KB, January 31, 2020)
  • Letter from the EPA Office of Air and Radiation Principal Deputy Assistant Administrator Anne L. Idsal to the Environmental Defense Fund (pdf) (155.81 KB, February 18, 2020)
  • Request for Extension from the Northeast States for Coordinated Air Use Management (pdf) (209.35 KB, January 29, 2020)
  • Letter from the EPA Office of Air and Radiation Principal Deputy Assistant Administrator Anne L. Idsal to the Northeast States for Coordinated Air Use Management (pdf) (158.58 KB, Pebruary 18. 2020)
  • Request for Extension from the National Tribal Air Association (pdf) (394.77 KB, January 22, 2020)
  • Letter from the EPA Office of Air and Radiation Principal Deputy Assistant Administrator Anne L. Idsal to the National Tribal Air Association (pdf) (158.14 KB, February 18. 2020)
  • Request for Extension from the Manufacturers of Emission Controls Association and Advanced Engine Systems Institute (pdf) (249.68 KB, February 3, 2020)
  • Letter from the EPA Office of Air and Radiation Principal Deputy Assistant Administrator Anne L. Idsal to the Manufacturers of Emission Controls Association (pdf) (162.36 KB, February 18. 2020)
  • Letter from the EPA Office of Air and Radiation Principal Deputy Assistant Administrator Anne L. Idsal to the Advanced Engine Systems Institute (pdf) (159.23 KB, February 18, 2020)

Regulations for Emissions from Vehicles and Engines

  • Onroad
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Contact Us About Regulations for Emissions from Vehicles and Engines
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Last updated on January 17, 2025
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