(a) A producer who has paid an assessment may obtain a refund of the amount paid by filing an application for refund with the secretary-treasurer within 60 days after the date of payment. The application must be in writing, on a form prescribed by the board for that purpose, and accompanied by proof of payment of the assessment.
(b) The secretary-treasurer shall pay the refund to the producer before the 11th day of the month following the month in which the application for refund and proof of payment are received.