Air sampling protocol document, 130 Cedar Street, Jan 2005

NYC 9/11 Public Portal Document

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

2. Do not use materials stored for a period of time exceeding the maximum recommended shelf life of the material. 1.08 GUARANTEE A. Provide a written guarantee from the manufacturer and the applicator stating that the applied sealants shall remain watertight for a period of five (5) years. PART 2.00 - PRODUCTS 2.01 SEALANT MATERIALS A. Exterior Wall Sealant: Provide two (2) part non-sag polyurethane sealant conforming to tt-s-00227e, Type II, Class A, equal to Sonolastic NP-2 by Sonnebom or approved equal. B. Colors: Colors of sealants as selected by the architect. 2.02 MISCELLANEOUS MATERIALS A. Back-Up Materials: Provide back-up materials and preformed joint fillers, non-staining, non -absorbent, compatible with sealant and primer, and of a resilient nature, equal to "Sof-Rod" made by Applied Extrusion Technologies Inc. or approved equal, twenty-five (25) percent wider than joint width. Materials Impregnated with oil, bitumen or similar materials shall not be used. Provide back-up materials only as recommended by sealant manufacturer in writing. B. Provide bond breakers, where required, of polyethylene tape as recommended by manufacturer of sealant. C. Provide primers recommended by the sealant manufacturer for each material to receive sealant. Note that each exterior joint must be primed prior to sealing. D. Provide solvent, cleaning agents and other accessory materials as recommended by the sealant manufacturer. C. Materials shall be delivered to the job in sealed containers with manufacturer's original labels attached. Materials shall be used per manufacturer's printed Instruction. PART 3.00 - EXECUTION 3.01 INSPECTION A. Examine the areas and conditions where joint sealers are to be Installed and notify the architect of conditions detrimental to the proper and timely completion of the work. Do not proceed with the work until unsatisfactory conditions are corrected to permit proper installation of the work. 3.02 INSTALLATION A. Apply the sealant under pressure with a hand or power actuated gun or other appropriate means. Gun shall have nozzle of proper size and provide sufficient pressure to completely fill joints as detailed. Neatly point or tool joint to provide the contour as indicated on the drawings. B. Preparation and Application 1. Thoroughly clean all joints, removing all foreign matter such as old caulking, dust, oil, grease, water, surface dirt and frost. Sealant must be applied to the base surface. Previously applied film must be entirely removed. 2. Stone, masonry and concrete surfaces to receive sealant shall be cleaned where necessary by grinding, water blast cleaning, mechanical abrading, or combination of these methods as required to provide a clean, sound base surface for sealant adhesion. a. Do not use any acid or other material which might stain surfaces.

Joint Sealers 07900-2

NYC-WTC 000125201