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Asbestos abatement technical specifications, 130 Cedar Street, July 2004

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Technical specifications document prepared for asbestos abatement work at the 130 Cedar Street site.

NYC-WTC_000125579–000125652

Folder label: “130 CEDAR STREET

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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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NYC-WTC_000125617Source: NYC Law Department, mirrored locally

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