A petition for extension of the time to submit comments must be submitted to PHMSA in accordance with § 190.309 and received by PHMSA not later than 10 days before expiration of the time stated in the notice. The filing of the petition does not automatically extend the time for petitioner's comments. A petition is granted only if the petitioner shows good cause for the extension, and if the extension is consistent with the public interest. If an extension is granted, it is granted to all persons, and it is published in the Federal Register.