Revised Guidance for Certification of Heavy-Duty Diesel Engines Using Selective Catalyst Reduction CISD-09-04
Supporting & Related MaterialEPA-HQ-OAR-2026-0728-0092
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- Title
- Revised Guidance for Certification of Heavy-Duty Diesel Engines Using Selective Catalyst Reduction CISD-09-04
December 30, 2009 Letter to Manufacturer, from Karl J. Simon, USEPA/OAR/OTAQ, regarding Revised Guidance for Certification of Heavy-Duty Diesel Engines Using Selective Catalyst Reduction (SCR) Technologies, CISD-09-04 REVISED (HDDE).
- Posted
- Jul 9, 2026