NYC 9/11 Public Portal Document
gar ~e~ 1bN2 _ 16: 23 2124838895 CRG PAGE 14
Building Facade Clean-up
Work shall be performed by a NYSDOL
licensed asbestos contractor with NYCDEP and
asbestos certified workers. NYSDOL
The contractor performing the cleaning
should be experienced in cleaning building
facades.
The clean up area shall be specified
("specified area") by DEP. The area below the facade
be covered with a layer of cleaning shall
polyethylene sheeting, All debris must he collected for
directly upon removal from the surface. disposal as ACM
(i.e. All waste must be double bagged in ACM
bags.) Running water or water waste labeled
runoff on the building facade is not permitted..
Building occupants shall be notified prior to
the facade cleaning, Access to the street
cleaning shall be restricted and marked below the facade
with caution tape. Cleaning shall not be
speeds greater than 20 mph. performed during wind
All HVAC systems and air ;,onditioners
shall be turned off All windows shall be
cleaning of the building. Some air closed during th
conditioners and windows may require sealing with
prevent water penetration. duct tape to
In cases where equipment is rigged
from the roof AU clean-up activities on the
completed prior to rigging equipment from the roof must be
roof.
All horizontal surfaces and all
windows on the facade shall be cleaned of large
and hand brushing or scraping with bulk material by wetting
rind/ or by 1+IEPA vacuuming from non-metallic bristle brushes or non-metallic scrapers, by wet wiping
top to bottom. Only water shall be used
pressure washing. Detergents, solvents, for wet wiping and low-
additives, and any other chemical cleaning agents
The removed material shall be 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 low
technique, moving from top to bottom, shall pressure washing
be employed to minimtize water bounce-back.
be washed with a low-pressure wash Facades shall
not to exceed 250 psi.
At the completion of work, a visual
inspection of the abated surfaces and sidewalk
verify the absence of visible debris. shall be performed to
Air monitoring shall be performed by
an independent NYSDOL Iicensed
with certified workers. 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
Page 5
05/03/02
NYC-WTC 000118420
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