11. Any person aggrieved by a decision of the Engineer under section 10 may, within thirty days from the date of its announcement, prefer an appeal to the Project Director of the Authority to whom the Engineer is subordinate. After the expiry of the said period, the Project Director of the Authority shall proceed to consider the report and the appeal, if any, and after making such further inquiry, as he may deem necessary, may record an order confirming, modifying or reversing the Engineer's decision and shall, as soon as possible, forward the report submitted by the Engineer, together with his remarks or order on appeal, if any, for the consideration of the Government or the Authority.