Where this Schedule or the Augmentation Process Deed refers to calculations or payments being made on an "open book basis" this means:
(a) providing a reasonable breakdown of the calculation of all relevant preliminaries, labour, consultant fees, equipment, materials, subcontract, finance and other costs, Margins and receipts of any Proponent and any Proponent Associate (as applicable) in a clear and transparent manner;
(b) using best endeavours to provide a breakdown of any amounts payable under any relevant subcontracts; and
(c) providing other information reasonably requested by the State including reasonably available source documents including invoices and timesheets required to verify such calculation.