E. Systems and Components to Be Cleaned: 1. Air devices for supply and return air. 2. Air-terminal units and connections. a. VAV boxes. b. Fan coil units. c. Flexible connectors. 3. Ductwork: a. Supply-air ducts, including turning vanes and reheat coils, to the air-handling unit. b. Return-air ducts to the air-handling unit. c. Transfer ducts. 4. Filters and filter housings. F. Collect debris removed during cleaning. Ensure that debris is not dispersed outside the HVAC system during the cleaning process. G. Particulate Collection: 1. For particulate collection equipment, include adequate filtration to contain debris removed. Locate equipment downwind and away from all air intakes and other points of entry into the building. 2. HEPA filtration with 99.97 percent collection efficiency for particles sized 0.3 micrometer or larger shall be used where the particulate collection equipment is exhausting inside the building,
