NYC 9/11 Public Portal Document
Study
Unit 3B - 3rd floor, Southwest comer, Cedar Street
Cleaning Method: Scope A - Lower Manhattan Cleaning Procedure - Surface
cleaning using industrial HEPA filtered vacuums. Area air filtration utilizing an air filtration
device (AFD). Soap and water wet wipe of all horizontal and vertical surfaces.
Equipment Used: Nilfisk™ Vacuum (CFM 127), AFD
Filtration Status: HEPA
Unit Size: 968 sq. ft.; 10,164 cu. ft.
AFD Status: Required
AFD Specification: 400/600 cfm
Unit Air Exchange Rate: 25.41 min @ 400 cfm
Minimum Air Exchange Required; Every 30 minutes
Unit Description: This 968 sq. fl. loft facing Cedar Street has three bedrooms. All personal
items including clothing, kitchenware, books, furniture, and electronic devices were cleaned
since the tenants plan to reoccupy the unit. Mattresses and carpets were disposed of. All
exterior windows were intact. Minimal dust was present in the space, except for baseboard
heating elements and window sash frames.
Difficult Areas Encountered:
• Exterior windows and sashes
• Hydronic baseboard heating units
• Cleaning of small items including CD’s, tapes, clothes, shoes, kitchenware, etc.
• Cracks and crevices
4
NYC-WTC_000145180
OCR can misread numbers and units. Confirm readings against the page image before using them.