4.1.1. The Department shall notify the Contractor, by phone or email when services are required and will issue a Task Assignment (TA) Exhibit 4 advising the Contractor of the work location, work schedule and pertinent information about the required services. 4.1.2. Within seven (7) calendar days of receipt of the Task Assignment, the Contractor shall provide the Department with a quote. The quote shall be submitted by email or in person. This response shall include verification of the work items and quantities, work schedule and Contractors’ personnel assigned to perform services. 4.1.3. The crack sealant type shall be as specified within the task assignment by the Department. 4.1.4. The Contractor shall begin services within fourteen (14) calendar days after receipt of an approved Task Assignment, Exhibit 4, unless otherwise agreed upon/approved on the Task Assignment. 4.1.5. No work shall begin until the task assignment is approved by the Department and a Purchase Order (PO) for the project is issued to the Contractor. 4.1.6. Deviation from the amount reflected on the quote which results in an increase cost to the Department shall be approved in writing by the Department prior to the start of work, and any additional and/or new work is initiated. Any work that is done by the Contractor without proper authorization shall not be eligible for payment. 4.1.7. The Contractor shall be responsible for verifying/confirming quantities prior to start of any project. All changes must be approved by the Department prior to the start of work. Any changes to the quantities and/or scope encountered once the project begins shall be immediately brought to the attention of the Department.