Applicant shall be responsible for the cost of all necessary coverage and operational capacities when the proposed construction or modification of the structure is determined to potentially cause interference or degradation to the City's radio systems, and the structure, such as a monument, is not physically adaptable to supporting radio communications equipments. Such costs shall include leasing, purchasing or otherwise acquiring space in other buildings, erecting radio towers, acquiring building equipment shelters and for doing all other work deemed necessary to restore and secure communications or radio services. The applicant shall also pay the costs of radio control wire lines and other circuits leased from the telephone company that are necessary for the control and operation of the radio equipment at this site. The applicant shall be obligated to pay such recurring costs for leased sites and/or equipment for a period of not less than 10 years or until such time as the City vacates the premises, whichever occurs first.