The Pari-Mutuel Audit Unit shall be supervised by the State Director of Mutuels. The Pari-Mutuel Audit Unit is hereby delegated the responsibility of representing the Board in the supervision and verification of the pari-mutuel wagering pool totals for each racing day and for each program, which verification shall be the basis for computing state privilege taxes, organization commissions and purses. The Pari-Mutuel Audit Unit shall also assist the Board and the stewards in investigation of alleged violations of the Act and of the rules of the Board.