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NYC-WTC_000220287

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NYC 9/11 Public Portal Document

AMBIENT LABS, INC. 159 WEST25TH 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: Lenman Brothers DATEREC’D: 10/31/2001 LOCATION: 1WFC&3WFC TIME REC'D : 3:41 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

B2K91553 6-01 Gray ON THE 6TH FLOOR SEE DRAWING. YES 5.00 % (P) CHRYSOTILE ; 5.00 % CELLULOSE : 20.00 % MINERAL WOOL : 40.00 % NON-FIBROUS : 35.00 %

B2K91554 6-02 Gray ON THE 6TH FLOOR SEE DRAWING. NAD 0.00 % (P) CELLULOSE : 10.00% MINERAL WOOL: 60.00 % NON-FIBROUS : 30.00%

B2K91555 6-03 Gray ON THE 6TH FLOOR SEE DRAWING. NAD 0.00 % (P) CELLULOSE : 20.00 % MINERAL WOOL : 40.00 % NON-FIBROUS : 40.00 %

B2K91556 7-01 Gray ON THE 7TH FLOOR SEE DRAWING. YES 2.00 % (P) CHRYSOTILE: 2.00 % CELLULOSE : 30.00 % MINERAL WOOL: 30.00 % NON-FIBROUS : 38.00 %

B2K91557 7-02 Gray ON THE 7TH FLOOR SEE DRAWING. YES 0.24 % (P) CHRYSOTILE: TRACE CELLULOSE : 30.00 % MINERAL WOOL: 40.00 % NON-FIBROUS : 30.00 % B2K91558 7-03 Gray ON THE 7TH FLOOR SEE DRAWING. YES 1.30% (P) CHRYSOTILE : 1.30 % O CELLULOSE: 30.00 % MINERAL WOOL : 40.00 % H NON-FIBROUS : 28.70 %

S o 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 I 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 o 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 CAELAP ID # 2139. CO

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NYC-WTC_000220287

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NYC-WTC_000220287Source: NYC Law Department, mirrored locally

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