In providing the Estimate Project Co must:
5.1 use reasonable endeavours to oblige its Sub-Contractors to minimise any increase in costs and maximise any reduction in costs;
5.2 demonstrate how any Capital Expenditure to be incurred or avoided is being measured in a cost effective manner, including showing that when such expenditure is incurred, reasonably foreseeable Changes in Law at that time have been taken into account; and
5.3 demonstrate that any expenditure that has been avoided, which was anticipated to be incurred to replace or maintain assets that have been affected by the Medium Value Change concerned, has been taken into account in the amount which in its opinion has resulted or is required under paragraphs 3.7 and/or 3.8 of this Section 3; and
5.4 provide written evidence of Project Co's compliance with paragraphs 5.1 to 5.3 of this Section 3.