; or (ii) to explain why the petition is not unusually complex; and (B) to resubmit the petition. (e) Approval or denial of petitions (1) In general Not later than 180 days after the date on which a petition is complete under subsection (d)(1) (or 270 days after such date for an unusually complex petition), the Secretary shall notify the petitioner in writing that the petition was approved or denied, including, if denied— (A) a justification for the denial; and (B) a description of each deficiency, including, if applicable, any deficiency in the proposed evaluation framework. (2) Deficiencies The Secretary shall provide each petitioner with a reasonable opportunity— (A) to correct each deficiency identified under paragraph (1)(B); and (B) to resubmit a corrected petition for reconsideration. (3) Approval period (A) Deadline If the Secretary does not notify the petitioner in writing before the applicable deadline under paragraph (1), the Secretary shall submit to Congress, until the date of such notification, a monthly report on the status of the petition, including— (i) the reason the deadline was not met; (ii) a staffing plan to prioritize and expedite a decision on the petition; and (iii) an estimate of when the Secretary will notify the petitioner. (B) Period A waiver under this section may be issued for a period of not more than 5 years. (C) Renewal A waiver shall be renewed for the same period as the initial waiver unless the Secretary— (i) (I) determines that the alternative technology, practice, or system does not achieve a level of safety that is equivalent to, or greater than, the level of safety that would be obtained in the absence of the waiver; and (II) not later than 90 days before the expiration of the initial waiver, notifies the recipient of the waiver, in writing, that the waiver will not be renewed; (ii) incorporates the relevant terms of the waiver as an alternative compliance approach under subsection (h)