(a) If the Legislature establishes a railroad transportation authority which includes, or which is subsequently expanded to include, within its jurisdiction, Humboldt County or Mendocino County, or both of them, the authority shall be substituted for the department and affected councils of government as the applicant and the grantee agency for purposes of Sections 99625 and 99626.
(b) If the authority includes, or is expanded to include, within its jurisdiction, Del Norte County, the authority shall be substituted for the county as the applicant and grantee agency for purposes of Section 99628.