The Authority shall have the right to ask in writing changes, additions, modifications or deletions in the design and drawing of any part of the work and to request in writing auditioned work in connection herewith and the Consultant shall comply with such request.

That if the Authority deviates substantially from the original scheme which involves for its proper execution, extra services, expenses and extra labor on the part of the Consultant for making changes and additions to the drawings, specifications or other documents due to rendering major part or the whole of their work in fructuous, the Consultant may then be compensated for such extra services and expenses on quantum merit basis at percentage applicable under their agreement and to be determined mutually unless such changes, alterations are due to the Consultants own commission and / or discrepancies including changes required at the time of approval at various Forums and due to changes required by the Consultants of all internal, external utilities and services.

The decision of the Authority shall be final on whether the deviations and additions are substantial and require any compensation to be paid to the Consultant. However, for any modification or alteration which does not affect the entire design, planning, etc., no amount will be payable.

Consultant shall not make any material deviation, alteration, addition to or omission from the work shown and described in the contract document except without first obtaining the written consent of the Employer