Asbestos abatement technical specifications, 130 Cedar Street, July 2004

NYC 9/11 Public Portal Document

Asbestos Abatement Technical Specifications For 130 Cedar Street, New York, NY caulking is adequately wetted it shall be stripped using hand tools, with • the ACM caulking being directly bagged or dropped into a flexible catch basin and promptly bagged. The stripped joints shall be HEPA vacuumed and wet-wiped to remove any loose debris still in place. All exposed joints shall be coated with a transparent encapsulant.

11. Upon completion of the stripping in one location and before moving to the next, the surfaces of the immediate work area shall be rendered free of visible debris. Next, the plastic covering of the platform shall be carefully cleaned and secured at the next work area. New polyethylene shall be applied only as needed.

12. If visible emissions are noted or If the asbestos-in-air concentrations within the building exceed 0.01 f/cc or the measured background level all work shall stop. Abatement procedures shall be reevaluated. Work shall not resume until NYCDEP is notified.

8.6 Removal of Asbestos Containing Wall Plaster, Skimcoat Plaster on Columns, Pipe and Pipe Fittings Insulation, Interior Boller Lining, Perimeter Waterproofing Tar, Electrical Wire Insulation, Electrical Panel Board, Fire Door Insulation, Transite Panel, and Ceiling Skimcoat under Full Containment Procedures

The Contractor shall use work methods and equipment that will keep the fiber count during abatement operations inside the work area to less than 0.1 fibers/cc of air when tested by NIOSH Method 7400.

1. Removal of ACM using full containment procedures (large projects).

a. Prepare the area as described In these Specifications. Remove ACM while providing a continual mist of amended water or removal encapsulant leaving it intact. Spray asbestos materials with a fine mist of amended water or removal encapsulant, saturating materials to the substrate. Spray the asbestos material repeatedly during work process to maintain a wet condition and to minimize asbestos fiber dispersion.

b. Remove the saturated asbestos material in small sections. As it is removed, pack the material in sealable plastic bags that shall be placed in labeled drums for transport. Remove insulation materials carefully from equipment. Do not permit them to fall to the floor.

c. After completion of all stripping work, surfaces from which ACM have been removed shall be wet brushed and sponged or cleaned by some equivalent method to remove all visible residue. (Do not use wire brushes.)

d. After the ACM removal and bagging, the bagged waste shall be HEPA-vacuumed then wet cleaned and transferred into the shower room for double bagging. The goose-neck and double-

Prepared by JLC Environmental Consultants, Inc. Project No. 04-3271 Page 49

NYC-WTC 000125627