Supervise and be responsible for the disbursement of all moneys and have control of all expenditures to ensure that budget appropriations are not exceeded; audit all purchase orders before issuance; audit and approve, before payment, all bills, invoices, payrolls, demands, or charges against the Authority, with the advice of Legal Counsel, when necessary, determine the regularity, legality and correctness of such claims, demands or charges. Submit to the Authority Commission through the Chief Executive Officer a monthly statement of all receipts and disbursements in sufficient detail to show the exact financial condition of the Authority; and, at the end of each fiscal year, submit a complete financial statement and report.