Upon receiving a request for towing services, Contractor shall be responsible for dispatching the tow vehicles. 7.2. Contractor shall respond within twenty (20) minutes to all calls within the city and not to exceed forty-five (45) minutes within the county from the time the call is made by the Police Communications Dispatcher. Contractor shall specify in proposal guaranteed response times for calls for service requiring the concurrent use of more than two wreckers. 7.3. In the event that Contractor does not have the appropriate equipment or cannot respond to a request for service within the time limits established in this agreement, Contractor may subcontract individual tows or specific types of towing services with the consent of the Chief of Police, and Contractor shall make all necessary arrangements with a secondary towing service to remove vehicles within the agreement’s time limits and at the price bid by Contractor. Contractor retains ultimate responsibility for compliance with all material terms of the Agreement, and the operation of this paragraph does not in any way avoid or limit Contractor’s obligations under the Agreement’s terms. 7.4. In the event the Contractor does not respond in a timely fashion, the Department may, at its discretion, call another wrecker service of its choosing.