CFR > Title 40 - Protection of Environment > CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY > SUBCHAPTER C—AIR PROGRAMS (Parts 50–99) > PART 89—CONTROL OF EMISSIONS FROM NEW AND IN-USE NONROAD COMPRESSION-IGNITION ENGINES > SUBPART B—Emission Standards and Certification Provisions (§89.101 to §89.130) > 89.121—Certificate of conformity effective dates.

89.121—Certificate of conformity effective dates.

The certificate of conformity is valid from the date of issuance by EPA until 31 December of the model year or calendar year for which it is issued.

Code of Federal Regulations

[59 FR 31335, June 17, 1994. Redesignated at 63 FR 56995, Oct. 23, 1998]