Extension. The Director is authorized to grant or deny a request for extension of time for a permit, where a permittee is or will be unable to complete the work, as determined by the Director, within the time allowed. It shall be the responsibility of the permittee to apply for an extension not less than thirty (30) days prior to the expiration date of the permit. Such request shall be in writing and shall state the reasons for extension and the time required to complete the work. Where the permittee has requested an extension of a valid permit prior to its expiration and, through no fault of his own, the extension has not yet been granted or denied by the Department, the permittee may continue work under the permit. If the request for extension of the permit is denied, all work will cease immediately. Such denial may be appealed as provided herein. Where the Director determines that an additional bond amount is necessary because of inflation or other factors, the permittee shall be required to post the additional bond in an amount determined by the Director before the extension of time is granted. Where the permittee is working under the provisions of Section 23-122(a)(2), a grace period of ten (10) working days will be allowed for the posting of additional bond. Failure to post the additional bond during the ten (10) day period will cause the permit to be automatically suspended. The Director shall decide upon the request for extension and shall notify, in writing, the affected bonding institution and the applicant of his decision within twenty (20) working days of a formal request. This decision shall be contingent upon the payment of the necessary extension fee and notification to the Department of the consent of the bonding agent. Fee for extension: A fee in the amount of twenty-five percent (25%) of the original permit fee as prescribed in the Table of Fees, section 2-253.63, Attachment A and as published on the DPIE website, but not less than Twenty-Five Dollars ($25.00), shall be charged for an extension of a valid permit (not to include road construction, utility permits, small wireless facility permits, or haul road permits). The fee for an extension of a road construction permit shall be twenty-five percent (25%) of the original permit fee. Where the percentage of completion of a road construction permit exceeds ninety percent (90%) as determined by the Department, the permit fee shall be a maximum as prescribed in the Table of Fees, section 2-253.63, Attachment A and as published on the DPIE website. The fee for extension of a utility permit and a small wireless facility permit for work in the public right of way are established in the Table of Fees published by the Director. These fees are further explained in the "Specifications and Standards for Roadways and Bridges," the "Design Manual for Small Wireless Facilities," and the "Policy and Specification for Utility Installation and Maintenance." Security. The only forms of security which shall be acceptable to the County for the extension of a permit shall be either a Cash Bond, an Irrevocable Letter of Credit, Surety Bond, or a Certificate of Guarantee.