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The Verification Program evaluates technologies to support their use in the market while providing customers with confidence that verified technologies will provide emission reductions as listed. This Verification process evaluates the emission reduction performance of retrofit technologies, including their durability, and identifies engine operating criteria and conditions that must exist for these technologies to achieve those reductions.
This site provides a broad range of information and documents about the Verification Program and Process. Please review this information prior to contacting EPA.
Verified Technologies List
This table summarizes all the diesel retrofit technologies that EPA has evaluated and verified for use in engine retrofit programs
Background Information on the Verification Program
Learn about the basics behind EPA's Verification Program and Process
Verification Process for Manufacturers
Access information and documents for manufacturers interested in verifying a technology with EPA