The contractor shall provide all clerical central office facilities necessary to receive calls, dispatch wreckers, and release on a twenty-four-hour basis, all impounded vehicles or towed in vehicles, and shall be able to render at any time a correct accounting for all vehicles received and released. 9.2 The contractor shall provide immediate wrecker service twenty-four (24) hours each day, seven (7) days per week. 9.3 Every call for a wrecker shall be answered promptly and the contractor should be able to respond within thirty (30) minutes of the receipt of a call, on no less than ninety percent of all calls for service anywhere within a (45) mile radius of the Broken Arrow Fleet location (1700 West Detroit St). 9.4 Each vehicle shall be operated by an attendant who has a valid current driver’s license, and such permits and licenses as are required by law. 9.5 The contractor shall have the ability to place employees on call or make them otherwise available to the public as needed to allow the recovery of towed vehicles on a twenty-four (24) hour, seven (7) day per week basis. 9.6 The contractor shall maintain a current list of drivers available and identify the days and hours during which these drivers will be scheduled on duty.