CA Pub Util Code Section 100309

To the extent permitted by law, and until altered or revoked as provided by law, the district shall grant recognition to those employee organizations which served as the recognized representatives of the former county employees described in Section 100308 immediately prior to their employment by the district. The district shall assume and observe all applicable provisions, including wages, of existing written memoranda of understanding in effect between the county and the above recognized labor organizations for those former county employees described in Section 100308 who are employed by the district in positions which would have been covered by those memoranda if the employees had remained employed by the county. This obligation extends only for the remainder of the term of the respective existing written memoranda of understanding and to the extent not superseded by a successor agreement between the district and a recognized labor organization.