Site plan approval shall expire twenty-four (24) months after the date of approval, unless substantial construction has been commenced and is continuing. If a project is to be undertaken in phases, this requirement shall only apply to the initial phase as shown on the approved site plan. The applicable review authority may grant one extension of up to twelve (12) additional months; provided the applicant requests an extension, in writing, prior to the date of expiration of the site plan. The extension shall be approved if the applicant presents reasonable evidence to the effect that the development has encountered unforeseen difficulties beyond the control of the applicant, and the project will proceed within the extension period. If the above provisions are not fulfilled or the extension has expired prior to construction, the site plan approval shall become null and void. (Ord. 4-21. Passed 1-4-21.)