California Code, Education Code - EDC § 22319

(a) The initial payment to a member retired for service shall be issued within 45 days of either the effective date of retirement or receipt by the system of a completed application for retirement, whichever is later. The initial payment to an option beneficiary shall be issued within 45 days following receipt by the system of a completed application for death benefits and proof of death of the member. Monthly payments shall continue thereafter. Payments may be based on a good faith estimate pending receipt by the system of all necessary employment information.

(b) The allowance payable to a member retired for service or option beneficiary shall be finalized and a retroactive payment, if one is due, shall be issued within 45 days of receipt by the system of all necessary information.