A LEOFF Plan I elected official must pay member contributions directly to the department. Such member contributions will be calculated on the salary for the rank the member held at the time of taking the leave of absence. The department will bill the LEOFF I elected official on a monthly basis. Payment of each month's bill is due to the department by the 15th day of the next month. Failure to pay contributions for two consecutive billing months will result in suspension of LEOFF I elected official status. Such status can be reinstated if overdue contributions are paid within ninety days after notice of suspension.