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Document / 86 pages

Chain of custody form, 21 West Street, Nov 2001

Machine-extracted title · confidence 95%

Multi-page chain of custody document tracking the handling of samples collected from 21 West Street.

NYC-WTC_000094592–000094677

Folder label: “21 WEST STREET Block: 15 Lot: 22

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NYC 9/11 Public Portal Document

JLC ENVIRONMENTAL CONSULTANTS, INC. 200 Park Avenue South, Suite 1001, New York, New York 10003 Phone: (212) 420-8119 Fax: (212) 420-6092 Project No.: 01-2089 Rose Associates ELAP Lab Code: 11029 Analyte: ASBESTOS 200 Madison Avenue NIOSH and AIHA Lab Code: 100273 Date Received: 9/19/01 New York, NY 10016-3901 NVLAP Lab Code: 101953 Date Analyzed: 9/19/01 Batch#: 0109B370 SUMMARY OF ANALYTICAL RESULTS - PLM Site: T 21 West Street, New York, NY I SAMPLE # ASBESTOS TOTAL % OF CONSTITUENTS DATE COLLECTED DESCRIPTION/LOCATION COLOR DETECTED? ASBESTOS LAB # CLIENTS SAMPLE #

001 Apartment 91/ Window Sill/ Sample of TAN NO 0% CELL 20% 9/18/01 Dust FBGL 65% 10468 NFIB 15%

001A 002 Apartment 22K/ TV Stand/ Sample of Dust TAN NO 0% CELL 20% 9/18/01 FBGL 65% 10469 NFIB 15%

002B 003 Apartment 3E/ Desk/ Sample of Dust TAN NO 0% CELL 15% 9/18/01 FBGL 70% 10470 NFIB 15%

003C

*INSUFFICIENT MATERIAL SUBMITTED ^"TEM RECOMMENDED NOT ANALYZED POSITIVE STOP

ASBESTOS CONSTITUENTS NON-ASBESTOS CONSTITUENTS Sample Analysis by: Polarized Light Microscopy-Dispersion Staining (PLM-DS) CHRY = Chrysotile Asbestos PAPF = Paper Fiber AMOS = Amosite Asbestos MINW = Mineral Wool CROC - Crocidolite Asbestos FBGL = Fiberglass Method of SamA ple Preparation and Analysis: ACTN = Actinolite Asbestos SYNF = Synthetic Fibers All samples were prepared and analyzed In accordance with the EPA TREM = Tremolite Asbestos CELL = Cellulose "Method for the Determination of Asbestos In Bulk Building Materials" ANTH = Anthophylite Asbestos NFIB = Non-Fibrous USEPA/ 600/ R-931116, July 1993. ORGM = Organic Material WOLL = Wollastonite Instrumentation: HSHR = Horse Hair OTHR = Other Olympus PLM, Model BH-2A/M Stereomicroscope, Model VMZ 1x-4x. Al Wallner Laboratory Director

Analytical results reflect the make up of the materials only in the areas sampled. This "Summary of Analytical Results" shall not be reproduced except in full, without the writte approval of JLC Laboratory, and it must not be used by client to claim product endorsement by NVLAP or any agency of the U.S. Government. This method Is not applicable to samples containing large amounts of fine fibers below the resolution of the light microscope. The value of this method is limited to the quantitative Identification of asbestos and the semi-quantitative determination of asbestos content of bulk samples, expressed as a percentage of the protected area. Quantitatlon of asbestos content was determined with a visual volume estimate,.a calibrated visual area estimate, and/or point counting procedure. CAUTION: Other fibers with optical properties similar to asbesto may give positive Interferences and will be considered asbestos under this methodology. Also, PLM Is not consistently reliable In detecting asbestos in floor coverings and similar non-friable organically-bound materials. Quantitative transmission electron microscopy is currently the only method that can be used to determine If this material can b considered or treated as non-asbestos containing.

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NYC-WTC 000094677

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NYC-WTC_000094677Source: NYC Law Department, mirrored locally

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