Cal. Health & Safety Code § 34350.5

The exercise of any or all powers granted by this chapter shall be authorized and the bonds shall be authorized to be issued under this chapter for the purposes set forth in this chapter, by resolution of the authority which shall set forth a finding and declaration (1) of the public purpose therefor and (2) that such resolution is being adopted pursuant to the powers granted by this chapter. The finding and declaration shall be conclusive evidence of the existence and sufficiency of the public purpose and powers.