Public Utilities Code § 80011

Whenever the board finds and determines that:

(a) Another transit district is willing to annex the territory comprising the district;

(b) The annexing district has adequate facilities for and is able to supply transit service to the district in a manner equal to or superior to that presently rendered by the district;

(c) Annexation will not result in assumption of financial obligations by the taxpayers of district disproportionate to the services which they will receive; the board shall thereafter negotiate an agreement with the annexing district specifying the terms and conditions of annexation and such other matters as are necessary and incidental thereto.