NYC 9/11 Public Portal Document
e5/3w2002 16:23 2124838895 CRG PAGE 14
Building Facade Clean-up
Work shall be performed by a
NYSDOL licensed asbestos contractor with
asbestos certified workers. NYCDEP and NYSDOL
The contractor performing the
cleaning should be experienced in cleaning building
facades.
The clean up area shall be specified
be covered with a layer of ("specified area") by DEP. The area below the facade
polyethylene sheeting. All debris must he collected cleaning shall
directly upon removal from the for disposal as ACM
surface. (i.e. All waste must be double bagged
bags.) Running water or water in ACM waste labeled
runoff on the building facade is not permitted.
Building occupants shall be notified prior
to the facade cleaning. Access to the
cleaning shall be restricted and ma' ked street below the facade
with caution tape. Cleaning shall not be
speeds greater than 20 mph. _ performed during wind
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All HVAC systems and air
.;onditioners shall be turned of, All windows
cleaning of the building. Some air shall be closed during th
conditioners and windows may require sealing
prevent water penetration. with duct tape to
In cases where equipment is rigged
from the roof All clean-up activities
completed prior to rigging equipment from on the roof must be
the roof.
All horizontal surfaces and all
windows on the facade shall be cleaned of
and hand brushing or scraping with large bulk material by wetting
and/ or by HEM vacuuming from non-metallic bristle brushes or non-metallic scrapers, by wet wiping
top to bottom. Only water shall be
pressure washing. Detergents, solvents, used for wet wiping and low-
The removed material shall be additives, and any other chemical cleaning agents are prohibited.
immediately placed into containers (e.g. bags).
wiped. Free running water shall not be Windows shall be wet
evident during this procedure. Power for
supplied through ground fault interrupters. HEPA vacuums shall be
After completion of debris removal, the
specified area shall be carefully washed. A
technique, moving from top to bottom, shall low pressure washing
be washed with a lowpressure wash be employed to minimize water
not to exceed 250 psi. bounce-back. Facades shall
At the completion of work, a
visual
verifir the absence of visible debris. inspection of the abated surfaces and sidewalk shall be performed to
Air monitoring shall be
performed by an independent NYSDOL
with certified workers. licensed third party air monitoring firm
In order to minimize disruption
to the public and to the building
be performed during off-hours. occupants, it is recommended this work
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05/03/02
NYC-WTC 000118429
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