Each member subject to Section 31676.12 and subdivision (a) of Section 31808.7 shall continue to contribute as provided for in Article 6 (commencing with Section 31620) less an amount equal to one-third of that portion of such contribution which is payable with respect to the first three hundred fifty dollars ($350) monthly wage, or in counties where the board of supervisors pursuant to subdivision (b) of Section 31808.7 elects to have the retirement allowance of members computed according to the provisions of Section 31676.12, each member shall make contributions as provided for in Section 31621.2 with respect to all his monthly wage.
Source:
Section 31812.1, https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=GOV§ionNum=31812.1..