NYC 9/11 Public Portal Document
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Department of
Environmental
Protection Advisory for Building Facade Clean-up
59-17 )unction Boulevard
Corona, New York
11368-5107
The contractor performing the cleaning should be experienced in cleaning building
facades. I
Joel A. Miele Sr., P.E.
Commissioner
Building occupants shall be notified prior to the facade cleaning. Access to the
Robert C. Avaltroni
street below the facade cleaning shall be restricted and marked with caution tape.
Deputy Commissioner Cleaning shall not be performed during wind speeds greater than 20 mph.
Bureau of
Environmental Compliance All HVAC systems and air conditioners shall be turned off. All windows shall be
Tel (718)595-4418 closed during the cleaning of the building. Some air conditioners and windows
Fax (718) 595-4422
may require sealing with duct tape to prevent water penetration.
In cases where equipment is rigged from the roof: All clean-up activities on
the roof must be 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 and brushing, by wet wiping and/ or by HEPA vacuuming from
top to bottom. The removed material shall be immediately placed into containers
(e.g. bags). Windows shall be wet wiped. Free running water shall not be evident
during this procedure. Power for HEPA vacuums shall be supplied through ground
fault interrupters.
After completing the above, the entire facade shall be carefully washed. A low
pressure washing technique, moving from top to bottom, shall be employed to
minimize water bounce-back
If the environmental assessment disclosed the debris is asbestos -containing material
(ACM), this work shall be performed by a NYSDOL licensed asbestos contractor.
The workers must possess NYCDEP and NYSDOL asbestos worker certification.
The area below the facade cleaning shall be covered with a layer of polyethylene
sheeting and all debris and water must be collected for disposal as ACM waste.
10/5/01
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NYC-WTC_000150116
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