(a) The Participants recognise that difficulties may arise in the proper calculation of Reimbursable Costs if one or more of the Participants enters into a contract, arrangement or understanding related to this Agreement with a person that is in any way related to or associated with the Participant concerned.
(b) The Participants agree that before any of them enters into any contract, arrangement or understanding:
(1) with any person which is in any way related to or associated with the Participant and the Works, they must first seek the approval of the ALT to that contract, arrangement or understanding; or
(2) which is in the form of a sub-alliance, or is otherwise not subject to a fixed price, the Participants must obtain the approval of the Project Owner to that contract, arrangement or understanding in accordance with clause 6.10(a) and the Contracting Strategy.