Chain of custody record, 114 Liberty cleanup, February 2003

NYC 9/11 Public Portal Document

(14) ALL HVAC Systems and THEIR associated ductwork shall be removed and disposed in accordance with applicable rules and regulations. Intake/discharge registers of kitchen/bathroom exhaust systems shall be removed and cleaned. The first one to three feet of ductwork shall be wet wiped and HEPA vacuumed, then the registers will be reinstalled and covered with a layer of 6-mil polyethylene sheeting. [WHAT ABOUT WATER DAMAGED HARDWOOD FLOORS? THEY SAID ANY FLOORS THAT WERE WARPED, POPPING UP OR OTHERWISE DAMAGED WOULD BE REMOVED BY THEM.] (15) All debris and/or dust shall be misted and double bagged. Accumulation of water is prohibited. Water misting shall be sufficient to wet the material without water accumulations. Caution shall be taken to avoid wetting items that may be damaged by wet methods. An encapsulating agent shall not be applied. (16) All surfaces shall be wet wiped and HEPA vacuumed. Once the initial cleaning is performed, and all surfaces are dry, a second cleaning shall be performed. Surfaces include but are not limited to walls, floors, ceilings, ledges, windowsills, trims, appliances, equipment, personal items, and furnishings. Fireproofing and insulation shall be HEPA-vacuumed only. Care shall be taken to minimize the disturbance of the fireproofing and insulation. The fireproofing is not ACM according to the information provided to the DEP. [ALL FIBERGLASS INSULATION SHOULD BE REMOVED. IT WAS MY UNDERSTANDING THAT ONLY THE SPRAY-ON FIREPROOFING WOULD BE VACUUMED] (17) Surfaces that may not be wet wiped shall be HEPA vacuumed three times or disposed as ACM waste. Disposal of material may not occur without prior authorization by the building owner and/or resident, as applicable. Items identified by residents for cleaning that cannot be cleaned shall be immediately brought to the attention of DEP. DEP will provide a determination. Any agreement to dispose the item(s) must be received in writing fi-om the owner and/or resident as applicable. (18) Resident and/or owner, as applicable, must identify items to be cleaned or disposed. Tags shall be placed on items to be disposed. The contractor shall dispose tagged items unless otherwise indicated in this scope of work. Special conditions or handling instructions may also be specified within units. These include items/locations not to be incorporated in this scope of work. Residents shall provide written notice of special instructions and items not to be handled with their authorizations. [BEWARE OF PEOPLE TRYING TO SAVE STUFF THAT CANNOT BE PROPERLY CLEANED] a) Residents and/or owner shall identify items for disposal with clearly legible tags. Residents and/or owner, as applicable, shall make the final decision on cleaning or disposal of items. Items shall be cleaned by wet wiping and/or HEPA-vacuuming procedures, as appropriate. Compressed dry air (low pressure) may be used to blow debris/dust from openings/crevices in the items. HEPA vacuuming must be preformed in conjunction with this procedure. Care must be taken not to damage the items. Residents shall provide a written listing of items to be disposed prior to the mandatory pre-bid walk through. Carpet to be disposed shall be included in the list of items to be disposed. [ALL CARPETING SHOULD BE DISPOSED OF, n iS A POROUS MATERIAL AND CANNOT BE ’ PROPERLY DECONTAMINATED]

b) Items identified for disposal (tagged) shall be double-wrapped in 6-mil polyethylene sheeting and labeled as ACM waste or bagged in labeled ACM waste bags. The cleaning

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NYC-WTC_000155177