§ 63.9055 What records must I keep?
(a) You must keep a copy of each notification and report that you submitted to comply with this subpart, including all documentation supporting any Initial Notification or Notification of Compliance Status that you submitted, as required in § 63.10(b)(2)(xiv).
(b) You must also keep the following records specified in paragraphs (b)(1) through (5) of this section.
(1) For existing sources and for new or reconstructed sources which commenced construction or reconstruction after April 17, 2003, but before February 5, 2019, before October 13, 2020, the records in § 63.6(e)(3)(iii) through (v) related to startup, shutdown, and malfunction for a period of 5 years. A startup, shutdown, and malfunction plan is not required after October 13, 2020.