Ambient air sampling report Book Two for 105 Duane Street,

NYC 9/11 Public Portal Document

1 ATC Associates 104 East 25 Street. New York, NY 10010 Phone: (212) 353-8280 Fax: (212) 353-8306

I Attn: NIr. Fred Burkhardt Received: 12,23/01 4:30:00 PNI ATC Associates Inc. 104 East 25th Street ATC Group #: 6226 New York NY 10010 Analysis Date: 12/30/01 Fax: (212)353-3599 Phone: (212) 353-3280

Project: Tribeca Towers 105 Duane Street, New York, NY

Asbestos Fiber Analysis by Transmission Electron Microscopy (TEM) Performed by EPA 40 CFR Part 763 Final Rule (AHERA) I Analytical Asbestos Area Non Asbestos Structures Sensitivity Concentration Sample I/olnme Analveed .-Isb Type(s) O.5,u-5 5,,, (S/cc) (S/mm') (S/cc) :Votes 00= 1770.00 00450 0 None Detected 0 0.0048 0 <22.24 <0.0048 6-12_0 -I

' 004 1750.00 0.0450 0 None Detected 0 0 0.0049 <22.3L <0.0049 6226 -2

005 1925. 00 0.0450 0 None Detected 0 0 0.0044 __._ <0.0044 626-3

006 1745.00 0.0450 0 None Detected 0 0 0.0049 <22.14 <0.0049 6226 —1

007 1715.00 0.0562 0 None Detected 0 0 0.0040 < 17.79 <0.0040

008 (699.00 0.0562 0 None Detected 0 0 0.0040 <1 7.79 <0.0040 6226 -6

I

ROMAN PEYSAKHOV MICHAEL A. GORYCKI, Ph.D.

Analyzed by p' I ~— pproved by

I - '

Disclaimer- The lanoratory is not responsible for aata reported in structuresicc. ,vetch is dependent on volume collected by non-lanoratory personnel. This lab .s only responsible or data reported in structuresimm= This report may not be reproauced, except .n full, without wntten approval by AT. Assocates inc. This report may not be uses to claim oroauct endorsement by NVLOP or any other agency of the U.S. Government. This reports relates only to the samples reported aoove..uality control data )including 9596 confidence limits and laboratory ana analysis' accuracy ana precision) is available upon request.

Accreaiteo for NVLAP or M/TEM 4101:87.0 NY State FLAP 410879

Li NYC-WTC 000104528