When Part B is of the opinion that the Works are Substantially Complete, Part B shall submit to Part A a written request of inspecting the Works so as to determine whether Substantial Completion has been achieved. Upon such request, Part A must respond within twenty five (25) days of its receipt with either (i) a Certificate of Substantial Completion or (ii) an explanation of the reasons why the Works are not Substantially Complete, including a list of open items necessary to achieve Substantial Completion (Outstanding Works). Part A shall advise Part B of the time reasonably required to complete Outstanding Works., which shall be no more than two (2) months.