40 CFR §203.8

1. (a)A product for which a certificate has been issued may be recertified for the following year upon reapplication to the Administrator for this purpose upon such forms as the Administrator may deem appropriate.
2. (b)If the applicant supplies information establishing that:
   1. (1)The data previously submitted continues to describe his product for purpose of certification;
   2. (2)The low-noise-emission product criterion and “suitable substitute” criteria are to be the same during the period recertification is desired; and
   3. (3)No notice has been issued under § 203.7, then recertification will be made within 30 days after receipt of an appropriate recertification application by the Administrator.