NYC 9/11 Public Portal Document
Asbestos Abatement Technical Specifications
For 130 Cedar Street, New York, NY
comply with all applicable codes. All power to work areas shall be brought
into the area through ground-fault interrupters positioned at the source.
2.9 The Contractor shall shut down, lock out and isolate all HVAC systems to
prevent contamination and fiber dispersal to other areas of the structure, or
perform the work only at such times the HVAC units are inoperative.
2.10 The Contractor shall shut down, isolate and seal all return air shafts with a
minimum of 18-mil fire-retardant polyethylene sheeting or equivalent (three
layers of 6-mil) placed over a 3/8inch plywood "plug" that is sealed airtight into
the ductwork.
3.0 Floor and Wall Preparation
3.1 All remaining non-removable items within the work area with shall be covered
with two layers of 6-mil fire retardant polyethylene sheeting taped securely.
3.2 Cover all remaining pre-cleaned floors with two layers of 6-mil (minimum) fire
retardant sheeting or equivalent. Additional layers of sheeting may be utilized
as drop cloths to aid in the cleanup of bulk materials.
3.3 Plastic shall be sized to minimize seams. If the floor area necessitates seams,
those on successive layers of sheeting shall be staggered to reduce the
potential for water to penetrate to the flooring material. A distance of at least
6 feet between seams is sufficient. Do not locate any seams at wall-floor
joints.
3.4 Floor sheeting shall extend at least twelve inches (12 inch) up the sidewalks
of the work area.
3.5 All seams shall overlap a minimum of 12 , and be secured by first applying
spray adhesive and then firmly securing the sheets with tape.
3.6 All critical barriers shall be constructed according to Section 7.0.
3.7 Cover all remaining walls and windows within the work area with two (2)
layers of 6-mil fire retardant polyethylene sheeting or equivalent.
3.8 Each layer of fire retardant polyethylene sheeting shall be taped securely to
the wall or window. Layers shall not be taped to each other.
3.9 Plastic shall be sized to minimize seams. Seams shall be staggered and
separated by at least 6 (6) feet.
3.10 Wall sheeting shall overlap floor sheeting by at least 12inch beyond the
floor/wall joints.
3.11 Wall sheeting shall be secured to prevent it from falling away from the walls.
This may require additional support or attachments when negative pressure
ventilation systems are turned on.
Prepared by JLC Environmental Consultants, Inc. Project No. 04-3271 Page 39
NYC-WTC 000125617
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