to furnish the requested advanced service.
(5) Where, as a result of property acquisition, including acquiring rights-of-way, or new construction, a local exchange telecommunications company is unable to provide the requested advanced service within the one-year period set forth in paragraph (4), the company may petition the commission for an extension of up to six months, with service upon the customer or customers who made the bona fide retail request and the department if the department submitted the request on behalf of the customer or customers. The commission may delegate its authority to rule on such petitions to a bureau director or other appropriate employee who shall grant the petition for good cause shown.