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NYC-WTC_000220288

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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 TIMEREC'D: 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 8TH 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 WOOL : 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 % o MINERAL WOOL : 30.00 % NON-FIBROUS : 40.00 %

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 o 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 I approval of Ambient Labs, Inc. All results disclosed in this report relate only to the items tested. o o NVLAP ID #101618. NYS ELAP ID# 10865. STATE OF CA ELAP ID#2139. to co Ui o o Ji oo

NYC-WTC_000220288

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NYC-WTC_000220288Source: NYC Law Department, mirrored locally

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