(a)
There is in each public agency a public, corporate instrumentality of the State of California, known as the industrial development authority of the public agency. Each public agency is authorized to utilize that authority in the issuance of revenue bonds in the accomplishment of the public purposes as provided in Section 91502. The purposes provided in Section 91502 shall be deemed to constitute public purposes of the public agency, and the exercise by each authority of the powers conferred by this title, including the power to issue revenue bonds, shall be deemed to be the performance of an essential governmental function of the public agency; provided, however, that exercise of the powers conferred by this title in the achievement of the purposes provided in Section 91502 shall be subject to the provisions of, and exclusively as provided in, this article.
(b)
An authority shall not transact any business or exercise any powers under this article unless, by ordinance, or, in the case of a redevelopment agency, by resolution, the governing body declares that there is a need for the authority and that the authority shall function. The ordinance shall be subject to referendum in the manner prescribed by law for ordinances of the public agency. With respect to a redevelopment agency, the resolution provided for herein shall be subject to referendum in the manner prescribed by law for ordinances of the community in which the agency is located.
(c)
An authority shall conclusively be deemed to have been established and authorized to transact business and exercise its powers upon proof of the adoption of such an ordinance or resolution.
(d)
Notwithstanding any other provision contained in this article, a public agency shall have the power to transact any business or exercise any powers of an authority conferred by this title without having to establish an authority. However, a public agency may, at its option, establish an authority pursuant to the provisions of this article to exercise any powers conferred by this article. In the event that a public agency acts as an industrial development authority, any reference to authority and board contained in this title shall mean public agency and governing body, respectively.