Cal. Government Code § 21073

(a) A member who elects prior to January 1, 2000, to receive service credit under Section 21353, as authorized by subdivision (c) of Section 21070, for time during which he or she was subject to Section 21077, shall contribute in a lump sum or by installments, over that period and subject to minimum payments as may be prescribed by regulations of the board, an amount equal to the contributions he or she would have made had he or she not been subject to Section 21077, plus an amount equal to the interest, to the date of completion of payments, that would have been credited to those contributions. (b) A member who elects prior to January 1, 2000, to receive service credit under Section 21353, as authorized by subdivision (c) of Section 21070, for time during which he or she received service credit under Section 21076, shall deposit in the retirement fund, subject to the regulations of the board, an amount equal to (1) any accumulated contributions that he or she withdrew pursuant to Section 20737, plus an amount equal to the interest, to the date of completion of payments, that would have been credited to those contributions, and (2) an amount equal to the contributions he or she would have made had he or she not been subject to Section 21076, plus an amount equal to the interest, to the date of completion of payments, that would have been credited to those contributions. Upon electing, prior to January 1, 2000, to be subject to Section 21353, a member shall return to coverage under that formula without credit for any previous creditable state miscellaneous or industrial service credited at no cost pursuant to Section 21072, unless the member elects to redeposit or to purchase the service as otherwise required in this part, or the member has elected to be subject to Section 21353 solely for service rendered on or after the effective date of the election, as permitted during the one-year period specified in subdivision (c) of Section 21070. (c) The amendments to this section enacted during the first year of the 1999–2000 Regular Session are subject to the limitations set forth in Section 21251.13.