Gov. Code, § 20585

(a) Notwithstanding any other provision of this article, the board may enter into an agreement with the governing body of a contracting agency whose contract has been in effect for at least five years and the board of supervisors of a county maintaining a county retirement system for termination of the contracting agency’s participation in this system and inclusion of its employees in the county retirement system.

(b) The agreement shall contain provisions the board finds necessary to protect the interests of this system, including provisions for determination of the amount, time, and manner of transfer of cash or securities, or both, to be transferred to the county system representing the value of the interests in the retirement fund of the contracting agency and its employees by reason of accumulated contributions credited to the agency and its employees. However, the amount transferred may not exceed the amount of the accumulated contributions. Any amount representing the difference between the value of the interests in the retirement fund of the contracting agency and its employees, and the accumulated contributions credited to the agency and its employees, shall be credited to the reserve under Section 20174. The agreement may also contain any other provisions that the board deems necessary to address issues related to the transfer, including, but not limited to, benefits subject to an outstanding domestic relations order and benefits subject to a lien.

(c) All liability of this system with respect to members and retired persons under the contract shall cease and shall become the liability of the county system as of the date of termination specified in the agreement. Liability of the county retirement system shall be for payment of benefits in accordance with Chapter 3 (commencing with Section 31450) of Part 3 of Division 4 of Title 3 applicable to it except that allowances of persons retired on the termination date and their beneficiaries and of beneficiaries of deceased members or retired persons who are receiving allowances on that date, shall be continued in at least the amount provided under the agency’s contract as it was on that date. The termination may not affect the contribution rate of any member in any other employment under this system on the date of termination or any retirement allowance or other benefit based on service to another employer being paid on the termination date.

(d) Any member who becomes a member of a county retirement system upon the contract termination shall be subject to this part and Chapter 3 (commencing with Section 31450) of Part 3 of Division 4 of Title 3 extending rights to a member or subjecting him or her to limitations because of membership in another retirement system to the same extent that he or she would have been had he or she been a member of the county retirement system during his or her membership in this system under the terminated contract.

(e) Upon execution of the agreement, a contracting agency that is an employer under Chapter 9 (commencing with Section 20790) shall cease to have that status, and the accumulated contributions of the contracting agency shall be determined and thereafter held as provided in Section 20834.