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Air sampling protocol document, 130 Cedar Street, Jan 2005

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Protocol document outlining air sampling and monitoring procedures for 130 Cedar Street.

NYC-WTC_000125098–000125202

Folder label: “130 CEDAR STREET

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NYC 9/11 Public Portal Document

130 Cedar Street July 15, 2004 Selective Demolition and Façade Restoration Koenen Associates

2. Flashing shall be placed, generally, at bottoms of cavity wall construction, over all wall openings, window jambs, at sills of window, and in other locations where Indicated on the drawings. At bottoms of cavity walls, the flashing shall be built extending from the exterior face of the brick, up and over onto the back-up as detailed on drawings. Flashing shall be loosely draped. Extreme care shall be exercised in placing the masonry materials not to damage the flashing. Flashing damaged during the masonry erection shall be repaired or replaced by the Contractor at no additional cost to the Owner. All flashing shall be continuous around building unless otherwise noted on the drawings. Provide flashing of sufficient width to allow flashing to protrude 1-1/2" beyond building face. Trim excess only at time of final brick clean-down.

3. Where flashing Is penetrated by anchors patch flashings at penetration using adhesive and mastic recommended by the manufacturer to insure watertight seal.

4. Install flashing in accordance with Manufacturer's Instructions, using adhesive, primer, thinner, cleaner and mastic as recommended by flashing manufacturer.

5. Provide weep holes of type specified in the head joints of the first course of masonry Immediately on concealed flashing Space twenty-four (16) inches o.c..

3.06 CLEANING. PROTECTION. ADJUSTMENT

A. Clean-up

Upon completion, masonry shall be thoroughly cleaned. If stiff bushes and water do not suffice, the surface shall be thoroughly wetted with clean water and then scrubbed with a solution of an approved detergent masonry cleaner, equal to Sure Klean 600" made by ProSoCo Inc. or approved equal, mixed as per Manufacturer's directions, followed immediately by a thorough rising with clean water. All lintels and other corrodible parts shall be thoroughly protected during cleaning.

2. The Contractor shall take adequate precautions for the protection of all surfaces against mortar spatter, and shall immediately remove any such spatter hold should it inadvertently occur, leaving no stain or discoloration.

3. Trim exposed flashing.

B. Protection

1. Excess mortar shall be wiped off the masonry surfaces, as the work progresses.

2. Wood coverings shall be placed over all such masonry surfaces as are likely to be damaged during the progress of the entire project.

3. Protective measures shall be performed In a manner satisfactory to the Architect.

4. Damaged masonry units shall be replaced to satisfaction of the Architect.

5. Exterior masonry walls shall be draped with waterproof covering until copings are In place, to prevent water penetration in cavity.

C. Pointing: Point any defective joint with mortar Identical with that specified for that joint

3.07 REPOINTING EXISTING MASONRY

Unit Masonry 04200-9

NYC-WTC 000125166

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NYC-WTC_000125166Source: NYC Law Department, mirrored locally

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