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NYC-WTC_000220281

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NYC 9/11 Public Portal Document

AMBIENT LABS, INC. 159 WEST 25TH STREET NEW YORK, NY 10001 BULK SAMPLE LABORATORY DATA REPORT

PROJECT: 0211512 COLLECTED: 10/30/2001 BATCH ID: 3409 SIGNED FOR AMBIENT LABS INC. BY; CLIENT: Lehman Brothers DATEREC’D: 10/31/2001 LOCATION; 1 WFC & 3 WFC TIME RECD; 3;44 PM TECHNICIAN: PETE SCHORK ANALYZED: 10/31/2001

PERCENTOF LABORATORY ID FIELD ID SAMPLE SAMPLE ASBESTOS total SAMPLE NUMBER NUMBER COLOR DESCRIPTION PRESENT ASBESTOS CONSTIUTENTS

B2K91559 8-01 Gray ON THE STH FLOOR SEE DRAWING. YES 1,30% (P) CHRYSOTILE : 1.30% CELLULOSE ; 20.00 % MINERAL WOOL: 40.00 % NON-FIBROUS; 38.70 %

B2K91560 8-02 Gray ON THE STH FLOOR SEE DRAWING. NAD 0.00 % (P) CELLULOSE ; 30.00 % MINERAL WOOL ; 40.00 % NON-FIBROUS: 30.00 %

B2K91561 8-03 Gray ON THE STH FLOOR SEE DRAWING. NAD 0.00 % (P) CELLULOSE : 30.00 % MINERAL yVOOL ; 30.00 % HAIR: , ' 10.00% NON-FIBROUS; 30.00 %

B2K91562 9-01 Gray ON THE 9TH FLOOR SEE DRAWING. YES 5.00 % (P) CHRYSOTILE ; 5.00% CELLULOSE: 30.00 % MINERAL WOOL: 40.00 % NON-FIBROUS: 25.00 %

B2K91563 9-02 Gray ON THE 9TH FLOOR SEE DRAWING. NAD 0.00 % (P) CELLULOSE; 30.00% MINERAL WOOL: 30.00 % NON-FIBROUS; 40.00 %

B2K91564 9-03 Gray ON THE 9TH FLOOR SEE DRAWING. YES 0.24 % (P) CHRYSOTILE; TRACE CELLULOSE: 30.00 % 2H MINERAL WOOL: NON-FIBROUS: 30.00 % 40.00 % KI I to S NAD = No Asbestos Detected. Trace < 0.25 %. o (P) Analysis by Polarized Light Microscopy (PLM) NYS ELAP method 198.1 or EPA/600/R-93/116. (T) Analysis by Transmission Electron Microscopy (TEM) NYS ELAP method 198.4. Polarized o Light Microscopy is not consistently reliable in detection of 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 be considered or treated as non-asbestos containing. No reproduction of all or any portion of this report shall occur without written Io approval of Ambient Labs, Inc. All results disclosed in this report relate only to the items tested. o NVLAP ID #101618. NYS ELAP ID # 10865. STATE OF CA EL4P ID # 2139. CO CO

IC.

NYC-WTC_000220281

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