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Regulations for Emissions from Vehicles and Engines

Direct Final Rule: Nonroad Diesel Technical Amendments and Tier 3 Technical Relief Provision

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Rule Summary

In this rulemaking, EPA is making certain technical corrections to the rules establishing emission standards for nonroad diesel engines. In addition, we are amending those rules to provide nonroad diesel equipment manufacturers with a production technical relief provision for Tier 3 equipment which is similar to the technical relief provision already available for Tier 4 equipment.

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