(a) An engine manufacturer may request a hearing on the Administrator's denial or revocation or voiding ab initio of a certificate of conformity.

(b) The engine manufacturer's request must be filed within 30 days of the Administrator's decision, be in writing, and set forth the manufacturer's objections to the Administrator's decision and data to support the objections.

(c) If, after review of the request and supporting data, the Administrator finds that the request raises a substantial and factual issue, the Administrator will grant the engine manufacturer's request for a hearing.