Specifications include, but are not limited to:. Contractor shall provide all labor, supervision, material, equipment, and supplies necessary to clean sanitize and refurbish the air conditioning systems and associated components. All employees and individuals shall have received Respiratory Protection Training and Quantitative Fit Testing in accordance with OSHA's Respiratory Protection Standard (29 CFT 1910.134). Contractor shall provide written proof of annual Certification testing for each employee by a Board Certified Industrial Hygienist. In addition, Contractor shall provide written proof of annual compressive medical examination demonstrating employee pulmonary stress testing for respirator use. Prior to the cleaning and remediation, an evaluation shall be performed on the building and air conditioning system. The air conditioning system shall be inspected for potential contaminates in the air stream of the building. Contractor shall thoroughly inspect and clean the inside of all Air Handling Units, all Variable Air Volume devices (VAV boxes), mixing boxes, all supply air ductwork, return air ductwork and outside air ductwork. It shall be Contractor's responsibility to ensure that the ductwork and the inside of air handling units are not damaged nor have defects. If corrections are required, it shall be reported to the Owner's representative. All surface areas, work stations, desks, chairs, counters, and walking areas shall be covered with plastic sheeting before any ceiling panels are removed. All work sites shall be cleaned up and debris removed at the end of work each day by Contractor. Contractor shall furnish Certificate(s) of Insurance which indicate that insurance coverage has been obtained which meets the requirements by the State of Texas. Installation of Access Doors: To ensure proper cleaning of the air handling units and ductwork, access panels and access doors will be installed at the required locations to gain service openings into the air handling units and ductwork. All access entries shall be fitted with insulated and hatched access doors or panels sealed with caulking and gaskets. Access panels or access doors shall be installed in supply ductwork within 4 to 6 feet from the air handling unit and shall be between the air handling unit and the first set of turning vanes. All cut or raw edges of fiberglass shall be sealed with duct mastic and then coated with an EPA registered antimicrobial protective coating. Access panels or access doors shall be installed at the discharge of the AHU to provide open access to the supply ductwork and discharge of the blowers for inspecting and cleaning. Where applicable, an access panel or access door shall be installed in the return air plenum to provide access for inspection and cleaning of one side of the coil and in the first ten (10) feet of return air ductwork, face and by-pass dampers.