Agents, officials, or other qualified persons authorized by Cary may periodically inspect UTBs to ensure compliance with this ordinance. Notice of the right to inspect shall be included in the letter of approval of each variance and authorization certificate. Authorized agents, officials or other qualified persons shall have the authority, upon presentation of proper credentials, to enter and inspect at reasonable times any property, public or private, for the purpose of investigating and inspecting the site of any UTB. No person shall willfully resist, delay, or obstruct an authorized representative, employee, or agent of Cary, while that person is inspecting or attempting to inspect a UTB nor shall any person obstruct, hamper or interfere with any such representative while in the process of carrying out their official duties. Cary shall have the power to conduct such investigations as deemed reasonably necessary to carry out the duties as prescribed in this Section 14.6.