Vendor shall provide Lottery with On Call Electrical Maintenance services twenty-four (24) hours per day, seven (7) days per week, three hundred sixty-five (365) days per year on an open-end and continuing basis as outlined in this Contract. 4.2.1 Vendor shall provide On Call Electrical Maintenance services in accordance with manufacturer’s recommendations and specifications at WV Lottery Headquarters building, warehouse, and parking garage, and the Backup Data Center located in Bridgeport. 4.2.2 Vendor shall furnish all equipment, tools, and parts necessary in the performance of this contract. Equipment and tools will be provided by the Vendor at no cost to the Lottery. 4.2.3 Vendor shall provide non-reusable materials used in the scope of work under this Contract at no cost to the Lottery. Such items may include, but are not limited to, grease, cleaning supplies, rags, electrical tape, etc. 4.2.4 Vendor shall be responsible for replacement of materials such as ceiling grid and tiles should they become soiled or damaged by Vendor. Lottery will make final determination whether to clean or replace on a case-by-case basis. 4.2.5 Vendor may only remove part or all of the Electrical System from service for a period of 24 hours or more with permission from the Lottery. 4.2.6 Vendor shall maintain an emergency telephone service twenty-four hours per day, seven days per week, three hundred sixty-five days per year (24/7/365). Vendor shall establish a call down list or other procedure that will insure the quickest possible response time...