evidence: A member’s eligible survivor is entitled to an accidental death benefit if the member’s death is the natural and proximate result of a personal injury sustained or hazard undergone while in the performance of his or her duties and without serious and willful misconduct on the member’s part. The member’s injury must be sustained while he or she is a member-in-service. [...] If a member dies from a job-related injury or exposure to a hazard more than two years after the occurrence of the injury or exposure, accidental death benefits will be denied unless a notice was filed with the retirement board within 90 days of the injury or exposure or, if there are records of workers’ compensation payments for the same injury or, if the member is not covered by workers’ compensation, a record of such injury or hazard undergone is on file in the official records of his or her department. [...] If the member leaves no eligible spouse or if the spouse dies after being awarded accidental death benefits, pension payments would be paid instead to a guardian for the benefit of the surviving eligible children.