Cal. HSC § 25537.5

(a) Where a stationary source has one or more covered processes, and is subject to the requirements of Article 1 (commencing with Section 25500) for the same substance, compliance with this article shall be deemed compliance with Article 1 (commencing with Section 25500) for that substance, to the extent not inconsistent with federal law and with Article 1 (commencing with Section 25500). (b) Any stationary source that relies on subdivision (a) for compliance with the applicable requirements of Article 1 (commencing with Section 25500) shall annually submit to the unified program agency a statement that the stationary source has made no changes required to be reported pursuant to Article 1 (commencing with Section 25500), or identifying all reportable changes.