Non-road Diesel Engine Certification Tier Chart

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Portable Equipment Registration Program (PERP)
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The PERP eligibility requirements take effect six months after the federal and CARB non-road engine emission standards for engine manufacturers change -- as shown:

Tier Color Chart - Off-Road_Diesel_Stds

 

Related Resources

PERP Application Submittal Instructions
Cargo Tank Certification Decal and Tank Number Display Requirements
California State of Emergency (January 7, 2025): Sale, Offer for Sale, and Importation of U.S. EPA Certified Portable Generators into California