Manufacturer Guidance on Compliance Demonstration with the Emissions Durability Procedures and Regulations
This letter provides guidance on compliance demonstration with the emissions durability requirements.
Specifically, this letter discusses:
- The level of information and documentation necessary for EPA review and approval of your emissions durability package;
- Clarification on the equivalency factor (EF) regulatory language;
- Determination of the EF with some sample calculations;
- Requests for durability meetings with EPA under the durability process; and
- An example of the demonstration criteria that may be used by EPA for review and approval of your emissions durability package is included for your convenience.
Manufacturer Guidance on Compliance Demonstration with the Emissions Durability Procedures and Regulations (PDF) (5 pp, 49K, April 2007, About PDF)