1 In addition to the Services set out in Schedule insert relevant schedule, the Consultant shall perform any additional services in connection with the Project which the Employer may instruct from time to time. Subject to clause 2, the Employer shall pay to the Consultant:

• 1.1 a lump sum fee to the Consultant in respect of particular additional services, to be agreed in writing between the parties; or

• 1.2 in the absence of agreement under clause 1.1, a fee to be calculated by the hours required for the proper and efficient performance of particular additional services, at the rates set out in Schedule insert relevant schedule.

2 [It is a condition precedent to the Consultant's right to payment under clause 1 that:

• 2.1 prior to commencing any particular additional services, the Consultant has notified the Employer in writing that the Consultant believes that such additional services are not included in the Services set out in Schedule insert relevant schedule and that the Consultant requests additional payment for the performance of such additional services; and