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
NYC-WTC 000094176
OCR can misread numbers and units. Confirm readings against the page image before using them.
NYC-WTC_000094176Source: NYC Law Department, mirrored locally