(a) The owner or operator shall review and update the RMP as specified in paragraph (b) of this section and submit it in the method and format to the central point specified by EPA as of the date of submission.(b) The owner or operator of a stationary source shall revise and update the RMP submitted under § 68.150 as follows: (1) At least once every five years from the date of its initial submission or most recent update required by paragraphs (b)(2) through (b)(7) of this section, whichever is later. For purposes of determining the date of initial submissions, RMPs submitted before June 21, 1999 are considered to have been submitted on that date.(2) No later than three years after a newly regulated substance is first listed by EPA;(3) No later than the date on which a new regulated substance is first present in an already covered process above a threshold quantity;(4) No later than the date on which a regulated substance is first present above a threshold quantity in a new process;(5) Within six months of a change that requires a revised PHA or hazard review;(6) Within six months of a change that requires a revised offsite consequence analysis as provided in § 68.36 ; and(7) Within six months of a change that alters the Program level that applied to any covered process.(c) If a stationary source is no longer subject to this part, the owner or operator shall submit a de-registration to EPA within six months indicating that the stationary source is no longer covered.61 FR 31726, June 20, 1996, as amended at 69 FR 18832, Apr. 9, 2004; 82 FR 4704, Jan. 13, 2017; 84 FR 69915, Dec. 19, 2019 82 FR 4704, 1/13/2017; 84 FR 69915, 12/19/2019