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 Code of Federal Regulations (Last Updated: November 8, 2024)
 Title 40 - Protection of Environment
 Chapter I - Environmental Protection Agency
 SubChapter U - Air Pollution Controls
 Part 1033 - Control of Emissions from Locomotives

  Appendix I to Part 1033 - Original Standards for Tier 0, Tier 1 and Tier 2 Locomotives

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  • Appendix I to Part 1033 - Original Standards for Tier 0, Tier 1 and Tier 2 Locomotives

    (a) The following emission standards applied for new locomotives not yet subject to this part 1033:

    Type of standard Year of
    original
    manufacture     		Tier Standards
    (g/bhp-hr)
    NOX PM-primary PM-alternate1
    Line-haul 1973-1992 Tier 0 9.5 0.60 0.30
    1993-2004 Tier 1 7.4 0.45 0.22
    2005-2011 Tier 2 5.5 0.20 0.10
    Switch 1973-1992 Tier 0 14.0 0.72 0.36
    1993-2004 Tier 1 11.0 0.54 0.27
    2005-2011 Tier 2 8.1 0.24 0.12

    1 Locomotives certified to the alternate PM standards are also subject to alternate CO standards of 10.0 for the line-haul cycle and 12.0 for the switch cycle.

    (b) The original Tier 0, Tier 1, and Tier 2 standards for HC and CO emissions and smoke are the same standards identified in § 1033.101.

    [81 FR 74011, Oct. 25, 2016]