NYC 9/11 Public Portal Document
December 17, 2002 114 LIBERTY STREET
REMOVAL OF DUST, DEBRIS, AND CONTAMINATED MATERIALS
a. The barriers shall be minimum 2" x 3" stud construction at 16" centers. The
outer walls shall be 1/2" finished plywood, new. All materials shall be fire
retardant.
b. The barrier shall extend from floor to slab ceiling and shall be flush.
c. All seams, on both the interior and exterior, shall be caulked, sealed, and made
airtight. Apply plastic sheeting, two (2) layers, 6 mil, to interior surface, stapled
and taped securely in place.
2. The barriers shall remain in place for the duration of the project.
3. At the completion of the project, the barrier(s) shall be removed by the Contractor, the
area(s) cleaned via HEPA-vacuuming and wet-wiping techniques, and to their original
condition.
4. The area where contaminated dust is to be removed is to be isolated from other portions
of the building.
5. The entire Work Area shall receive plastic preparation as described herein.
6. The Contractor shall post an approximately 20-inch by 14-inch manufactured caution sign
at each entrance to the work area displaying the following legend with letter sizes and
styles of a visibility required by 29 CFR 1926.1101:
DANGER
ASBESTOS
CANCER AND LUNG DISEASE HAZARD
AUTHORIZED PERSONNEL ONLY
RESPIRATORS AND PROTECTIVE CLOTHING
ARE REQUIRED IN THIS AREA
Provide spacing between respective lines at least equal to the height of the respective
upper line.
7. The Contractor shall post an approximately 10-inch by 14-inch manufactured sign at each
entrance to each work area displaying the following legend with 3/4-inch block letters:
NO FOOD, BEVERAGES OR TOBACCO PERMITTED
ALL PERSONS SHALL DON PROTECTIVE
CLOTHING (COVERINGS) BEFORE
ENTERING THE WORK AREA
ALL PERSONS SHALL SHOWER IMMEDIATELY
AFTER LEAVING WORK AREA AND BEFORE
ENTERING THE CLEAN ROOM
8. The Contractor shall thoroughly clean all interior window surfaces, as well as the exterior
window sills, utilizing HEPA-vacuuming and wet-wiping techniques.
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© AMBIENT GROUP, INC. - 2002
TEMPORARY ENCLOSURES AND WORK AREA PREPARATION
NYC-WTC_000155750
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