California Code, Government Code - GOV § 31652.2

(a) Any member of a retirement system established pursuant to this chapter who was previously a member of the same county retirement system and who thereafter became a member of the Public Employees' Retirement System as a result of employment by a public agency contracting with the Public Employees' Retirement System, shall receive credit in the county retirement system for service rendered as an officer or employee of such public agency, provided that he or she makes the contributions specified by Section 31641.2, and provided further that he or she is not entitled to receive any other pension or retirement allowance from any public agency for such service.

(b) Notwithstanding any other provision of law, any person who would otherwise qualify under subdivision (a) who elected to leave his or her contributions on deposit with the Public Employees' Retirement System and receive the benefits of reciprocity, may rescind that election and withdraw his or her contributions plus accrued interest from the Public Employees' Retirement System and deposit the same in the county retirement system of which he or she is a member as payment in full or in part for the service credit described in this section. The person shall not thereafter have the right to redeposit the withdrawn contributions in the Public Employees' Retirement System or to receive any credit for such service in that system. Any member of a county retirement system who is eligible to receive credit for other public service pursuant to this section shall receive the benefit of any motion or resolution adopted by the board of supervisors pursuant to subdivision (c) of Section 31641.2 which was in effect during the member's county service.

(c) This section shall apply only in a county of the first class, as established by Sections 28020 and 28022, but shall not be operative in a county until adopted by resolution of the board of supervisors.