NYC-WTC_000209450

NYC 9/11 Public Portal Document

Equipment shrill run continuously until clearance air monitoring. A minimum ofone air change every 15 minutes shall be provided. When ducting to the outside is not possible, a second negative pressure ventilation unit compatible with the primary unit may be connected in series.

10. When conducting cleaning ofcommon space in apartment buildings, the elevator control shall be modified to bypass the work area.

11. Prior to any cleaning of common spaces, isolation barriers (i.e. sealing offof all openings, including but not limited, to windows, corridors, doorw ays, barriers, skylights, ducts, grills, diffusers, and any other penetrations ofthe workplace) shall be installed with two layers of6-mil plastic sheeting sealed with tape. All seams ofHVAC or other systi^m components that pass through the work place shall also be sealed. All openings shall be HEi’A vacuumed prior to constructing the isolation barrier.

12. All WTC debns shall be misted and double-bagged. Accumulation of water is prohibited. Water misting shall be sufficient to wet the material without water accumulations.

13. After the remcval ofdebris, all surfaces will be cleaned in accordance with the procedures specified in Scope A. ,^fter all surfaces have been cleaned, a second cleaning shall be performed. This results in two lull cleanings of all surfaces, with the following exception. Water extraction cleaning of carpets and fabric covered furniture will be conducted only once. Surfaces include but are not limited to walls, floors, ceilings, ledges, trims, appliances, equipment and furnishings.

14. Residents may identify and tag certain furriishings (e.g. carpets and fabric covered furniture) for disposal rather than cleaning. Disposal ofresidents ’ personal property shall not occur without prior written authorization by the owner.

15. Disposal of all wastes generated during the cleaning shall be the responsibility ofthe contractor. All waste generated shall be treated as asbeslos-coniaining material (ACM). Transportation and disposiil of generated waste shall be in compliance with all applicable rules and regulations.

16. A Cleaning Checklist (to be provided by EP7<) will be completed by the cleaning contractor as tasks are completed to document the progress of the cleaning.

17. An activity log will be maintained by the site supervisor.

18. The cleaning (contractor shall notify the monitoring contractor immediately upon completion ofthe cleaning. The Monitoring Contractor will ccmduct a thorough visual inspection to verify the absence ofvisible dust accumulations. Ifdust is observed, the cleaning contractor will reclean a,s necessary at no additional cost.

19. Air sampling: shall be performed by the Ylonitoring Contractor after the area is free of dust

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CITY_2IMCl00_000438947 NYC-WTC_000209458