(a) For purposes of this chapter, “disaster” means a declared disaster or state of emergency, including, but not limited to, any of the following:
(1) A state of disaster or emergency declared by the federal government.
(2) A state of emergency proclaimed by the Governor pursuant to Section 8625.
(3) A local emergency proclaimed by a local governing body or official pursuant to Section 8630.
(b) The Legislature finds and declares that this chapter addresses a matter of statewide concern rather than a municipal affair as that term is used in Section 5 of Article XI of the California Constitution. Therefore, this chapter applies to all cities, including charter cities.