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12 JOHN STREET 1001103, 65/20

Label derived from the City's folder field. The City does not supply document titles.NYC-WTC_000094165–000094180
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NYC 9/11 Public Portal Document SEP-11-2002 11:33 NYCDEP BANHM ASE/LEAD TRU 718 595 3648 P.12

Building Facade Clean-up

contractor with NYCDEP and NYSDOL Work shall be performed by a NYSDOL licensed asbestos asbestos certified workers.

cleaning building facades. The contractor performing the cleaning should be experienced in below the facade cleaning shall The clean up area shall be specified ("specified area") by DEP. The area be collected for disposal as ACM be covered with a layer of polyethylene sheeting. All debris must double bagged in ACM waste labeled directly upon removal from the surface. (i.e. All waste must be permitted. bags.) Running water or water runoff on the building facade is not to the street below the facade Building occupants shall be notified prior to the facade cleaning. Access performed during wind cleaning shalt be restricted and marked with caution tape. Cleaning shall not be speeds greater than 20 mph. windows shall be closed during the All HVAC systems and air conditioners shall be turned off. All require sealing with duct tape to cleaning of the building. Some air conditioners and windows may prevent water penetration. activities on the roof must be In cases where equipment is rigged from the roof: All clean-up completed prior to rigging equipment from the roof.

All horizontal surfaces and all windows on the facade shall be cleaned of large bulk material by wetting non-metallic scrapers, by wet wiping and hand brushing or scraping with non-metallic bristle brushes or used for wet wiping and low- and/ or by HEPA vacuuming from top to bottom. Only water shall be agents are prohibited. pressure washing. Detergents, solvents, additives, and any other chemical cleaning (e.g. bags). Windows shall be wet The removed material shall be immediately placed into containers for HEPA vacuums shall be wiped. Free running water shall not be evident during this procedure. Power supplied through ground fault interrupters. washed. A low pressure washing After completion of debris removal, the specified area shall be carefully bounce-back. Facades shall technique, moving from top to bottom, shall be employed to minimize water be washed with a low-pressure wash not to exceed 250 psi. sidewalk shall be performed to At the completion of work, a visual inspection of the abated surfaces and verify the absence of visible debris. air monitoring firm Air monitoring shall be performed by an independent NYSDOL licensed third party with certified workers. it is recommended this work In order to minimize disruption to the public and to the building occupants, be performed during off-hours.

Page 5 05/03/02

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NYC-WTC_000094176Source: NYC Law Department, mirrored locally

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