If an agency undertakes any action to remedy or remove a release of hazardous substances on, under, or from property within a project area, the agency shall amend its redevelopment plan and follow the same procedure, as specified, and the legislative body is subject to the same restrictions as provided for in Article 4 (commencing with Section 33330), for the adoption of a redevelopment plan, if the agency determines that as a result of the remedial or removal action, it will also be taking any of the following actions:
Ca. Health and Saf. Code § 33459.8