Generally. Grading or drainage system connection permits shall be issued for a period not to exceed two (2) years where the estimated cost of work is less than Five Hundred Thousand Dollars ($500,000.00) and for a period not to exceed three (3) years where the estimated cost of work is equal to or more than Five Hundred Thousand Dollars ($500,000.00). The permittee shall fully perform and complete all of the work shown on the plans within the time limit specified in the permit. Extension. Prior to the expiration of a grading permit, the permittee may present a written request for an extension to the Director. If an extension is warranted, it may be granted in one year increments, one year at a time. Extension fees for grading shall be calculated at the same rate as permit fees, and based on the amount of site area that has not received final inspection approval as prescribed in the Table of Fees, section 2-253.63, Attachment A and as published on the DPIE website. Extension fees for storm drain, stormwater management (private and public systems outside the public right of way) shall be calculated at twenty-five percent (25%) of the same rate as the permit fee as prescribed in the Table of Fees, section 2-253.63, Attachment A and as published on the DPIE website. Extension fees for road construction included in a grading permit shall be calculated in accordance with Section 23-122 of the County Code. The applicability of bonding requirements shall be adjusted accordingly. Application for permit renewal and extension shall be made at least sixty (60) days prior to the permit expiration date. Permit Expiration and Renewal. Application for permit renewal and extension shall be made at least sixty (60) days prior to the permit expiration date. Extension beyond 6 years. If, in the opinion of the Director, a permit extension beyond six (6) years is warranted, it may be granted in one year increments. Such extensions require justification from the permittee and approval by the Director of the Department of Permitting, Inspections and Enforcement. No Activity. If no site work and/or no site inspections have occurred in a six (6) month period, the County may, in its sole discretion, default or close the permit.