 a description of the tasks, if any, to be performed or the measures to be taken and a programme of implementation of the tasks; 

 any necessary amendments to the programme of implementation of the tasks or to any of the contractor's obligations resulting from this contract; and 

 any adjustment to the total contract price in accordance with the rules set out in Article 22. 

22.6. Following the receipt of the contractor's submission referred to in Article 22.5, the project manager shall, after due consultation with the contracting authority and, where appropriate, the contractor, decide without delay whether or not to accept the amendment. If the project manager accepts the amendment, it shall notify the contractor through an administrative order stating that the contractor shall carry out the amendment at the prices and under the conditions given in the contractor's submission referred to in Article 22.5 or as modified by the project manager in accordance with Article 22.7. 

22.7. The prices for all amendments ordered by the project manager or the contracting authority in accordance with Articles 22.4 and 22.6 shall be ascertained in accordance with the following principles: 

 where the task is of similar character and implemented under similar conditions as an item priced in the budget breakdown, it shall be valued at such rates and prices contained therein; 

 where the task is not of a similar character or is not implemented under similar conditions, the rates and prices in the contract shall be used as the basis for valuation as far as is reasonable, failing which the project manager shall make a fair valuation; 

 if the nature or amount of any amendment relative to the nature or amount of the whole contract or to any part thereof is such that, in the opinion of the project manager, any rate or price contained in the contract for any item of work is, by reason of such amendment, rendered unreasonable, the project manager shall fix such rate or price as he thinks reasonable and proper in the circumstances; 

 where an amendment is required by a default or breach of contract by the contractor, any additional cost attributable to such amendment shall be borne by the contractor. 

22.8. On receipt of the administrative order, the contractor shall carry out the requested amendment according to the following principles: 

a) The contractor shall be bound by these general conditions as if the amendment requested by administrative order were stated in the contract. 

b) The contractor shall not delay the execution of the administrative order pending the granting of any extension of time for completion or adjustment to the total contract price. 

c) Where the administrative order precedes the adjustment to the total contract price, the contractor shall keep records of the costs of undertaking the amendment and of the time expended thereon. Such records shall be open to inspection by the project manager at all reasonable times. 

22.9. The contractor shall notify the contracting authority of any change of bank account, using the form in Annex V. The contracting authority shall have the right to oppose the contractor's change of bank account. 

