Specifications include, but are not limited to: A Glass Cleaning Service provider to clean interior/exterior surfaces on buildings. 5.3.1 The Contractor shall be responsible for cleaning all exterior glass windows, glass doors and interior glass on and the buildings listed within these specifications. The Contractor shall provide all labor, materials, equipment, chemicals, personnel hoisting apparatus, or other items required to properly perform the specified work. 5.3.2 Personnel hoisting apparatus which attach to or rests upon the coping stone, parapet walls, or other such structural or architectural components of a building will not be permitted. Such devices shall depend upon a counter weight mechanism resting upon the building roof. NO PENETRATION OF ANY ROOFING SYSTEM, IN ANY MANNER. SHALL BE PERMITTED. 5.3.3 Upon notice of award and receipt of a purchase order, the Contractor shall coordinate with UT Arlington and be able to commence cleaning of glass within ten (10) business days and shall complete such cleaning operations within the agreed schedule , but no longer than one hundred and eighty (180) days.