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Asbestos PCM and TEM analysis results, DEP Clean-up Project, Oct

Machine-extracted title · confidence 95%

Laboratory report detailing phase contrast microscopy and transmission electron microscopy data for samples from the DEP Clean-up project at 125 Liberty Street received on October…

NYC-WTC_000181887–000181892
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NYC 9/11 Public Portal Document ■ 007

ATC Associates ' (W East 25 Street, vew York, N^” 10010 Phone: (21'’) 353-3230 Fax-. (212) 353-8306

.Attn: Benjamin Sal.Onu Received. 10/9/02 S.00;00 am A.'?C Asso sir es Inc ATC Group #: 8946 104 East25lh StfS? Analysis Date: 10.^ 10.-02 New York' NY WOW

Fax: (212)353-3599 Phone; (212) 353-8280 Project: DEP Clean-up ATC Project #: 22906-0002 125 Cedar Street, New York, NY

EPA PCMe Method Via Transmission Electron Microscopy !Van .-isbatos EPA PCMe Asbestos PCM Asbestos Asbestos % of (TEM) Sample Volume Fibers p/cc Type(s) Fibers total F/cc t^otes

A-9N-01 JR70OO 0-001 None Detected 0 0 <0.0002 Celbloie' S StTJcbrss S946 .1

A-9N-02 3860.00 5 C.OOI None Detected 0 0 <9 0002 Cellulose - 3 SBUctures. Gypsum • 2 S’njcures 6946 -2

A-9N-O3 3850.00 4 C.CO 1 Chrysotile 33 O.0OO4 Cellulose 2 Suvclures, Gypsum - 2 Sifuctures d.P<IS -4

.A-9N-04 3840,00 4 C.OOI None Datectea 0 0 <0.0002 Cellulose' 3 Slrjcuiies, Gypsu.m -1 Stoture Ii946 -4

A.9N.O5 3830.00 4 0.001 None Detected 0 C <0 0002 Cellulose 4 StrucLi^s 11946 -J

A-9S-06 5910 00 COO! CHRYSOTILE 1 13 0 0002 Cellulose -SStf-etures, Gypsum - 2 Stnietures ^9-16 -6

A-9S-07 390000 4 0.002 None Daiacied 0 0 <0 0002 Cellulose ■ 1 Sliuctuta, Gypsum. ■ 3 Spuctures .SP-up -/

MARKPEYSAigOV MICHAEL .A. GORYCKl. Ph.D.

Approved by;

aTC Is not responsible (a data reocned in fibera/w, which is dependent on volume oolisPed sy non-iabcraior, personne.. The ssove report relates only lo ih.e terns tested. This • . report mey not be reproduced, exapt in lull, without written approval by ATC Associates Inc. Ararysis perfcrmed oy ATC Assoc ales Inc. (NY ELAP #10879). Eory Grid Openings Yom each of Tie samples were examlnad for stiuctures greater than Spin length and having a length-to-wiaih ratio greater than 3/

Ifetlneielay, October ’6, 3002 Page I of d

CITY_21MC100_009369700

NYC-WTC_000181887

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NYC-WTC_000181887Source: NYC Law Department, mirrored locally

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