Specifications include, but are not limited to: The Contractor shall provide the City of Chicago (“City”) and the Chicago Department of Aviation (“CDA”) custodial services for O’Hare International Airport as outlined herein (collectively, “Services”). The Contractor is expected to provide the best-in-class custodial services that utilizes innovative and flexible management strategies to execute the Services, demonstrates its commitment to sustainability, prioritizes customer service, and operates through streamlined processes in its delivery of the Services. Contractor shall furnish all necessary labor, materials, tools, equipment, management, and supervision to perform custodial services 24 hours a day, 365 days a year of approximately three-hundred thousand (300,000) square feet of restrooms, public spaces, baggage claim areas, offices, and other related spaces Landside at Terminals 1, 2, and 3 of O’Hare International Airport. Contractor shall provide labor based on full time employees working eight (8) hour shifts (not including scheduled meal breaks or other breaks). Materials, supplies, and equipment shall be of high quality, industrial grade, and meet CDA’s minimum specifications and approval.