Asbestos fiber analysis results, NYC DEP project, July 2002

NYC 9/11 Public Portal Document

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

Artn: Mx. Fabio Pedonc Received! 7/12/02 4:15:00 PM Warren & Pinser Engineers, P.C. ATCGroup#: 8472 228 E. 45th Street AaalysU Date; 7/13/88 New York NY 10017 Fax: (212)922-0630 Phone: (212)922-0077 Project: NYC DEP, WAPr? 1 C79,01.02 145 Chambers Street, Roof

Asbestos Fiber Analysis by Transmission Electron Microscopy (TEM) Performed by EPA 4C CFR Part 763 Final Rule (AHERA) /laatftieal jifiesus Arta Non Atbatos ^Strueturtt Sttttilniiy C»»uaitratl»n StutpJe l^olume Aw/fzal Ash Tifitfs) (S/iv) (&'ce) Notei 01 1300.00 0.0674 0 NoneOe»aec 0 0 0.0044 <14.83 <0,0044 8^n -J

02 1300.00 0.0674 0 None Oetectad 0 0 0.0044 <14 83 <0.0044 S472 .2

03 1300.00 0.0674 0 None Detected 0 0 0.0044 <14.83 <0.0044 S472 -3 04 1300.00 0.0674 0 NanaOetectad 0 0 0-0044 <14.83 <0.0044 »4?2 -4

05 1300.00 0.0674 0 NoneDetodBcl 0 0 0.W44 <14.83 <0.0044 #*?.’ -J

MARKPEYSAKHOV MICHAEL A. GORYCKI, Ph.D, Analyzed by; Approved by:

Disclaimer, The Itboratny i* net tespantible (Of data «aparted tn ttnsturulee, which b daoendant on volume ooUerted by non-tabMato^ peraameL This lab b only raaponsUe for dab reported In atnjdwatfmm^. This resort may no( be reproduced, eaeept In AiU, wiHwutwilBtn appmal by ATC Assoelafce kic. This report may not be uatd to claim pmdua aAdonemam by NVLAP or any Khar agenqr of the u.s. Govenmant This repwit relates only to the samples reported above. Qusiity eenirol dais (including 95% confidence limits and labcrsiory and analysis' accuracy and precision) is ayafleble upon recuast.

AoKBflSM tor NVLAP PLMfTEM #101137-8, NV State ELAP #10879

Paj/t J of!

CITY_21MC100_002942848

NYC-WTC_000186772