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Ambient air sampling report for 105 Duane Street, Feb 2002

Machine-extracted title · confidence 98%

Summary of ambient air sampling and visual observations at 105 Duane Street following the WTC collapse.

NYC-WTC_000104027–000104320

Folder label: “105 DUANE ST 1001650, 151/1

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NYC 9/11 Public Portal Document

1 ATC Environmental, Inc. 104 East 25th Street York 10010 New York, New Approved N.Y. State ELAP #101187 NVLoP25~01Code # ATC Associates Inc. ACCREDITED Report Date: 104 East 25th Street New York, NY 10010 MICROSCOPY TEM SMISSION ELECTRON Spectroscopy (EDSI ANALYSIS BY TRAM ASBESTOS FIBER Diffraction 30, 1987 Identification by Selected -Area Electron (S~o1.a52,ENorg210, October 763), With Fiber Register (40 CFR, part Federal Final Rule, EPA Method: AHERA Anal sis Parameters Identification 62239 Sam le TEM Sample No. : 576

105 Duane St. NY Tribeca Project/Site: Grid Openings Op AnalYzed• sVariou 10 25 01 Date Received: Average Grid Opening: l0

:?5 Analyed 0.0674 mm2 project Sample No. z :~ Total Area

130 1q.8 s/mm2 Air Volume: Analytical Sensitivity:~ — 00 0 Size: 0.45 um mm diam. Pore Filter Type: MCE 25 Effective Area: 30 a ----

CONCENTRATION 1 ------"--" FIBROUS PARTICULATES ~mbY obDserved Total strut[. Filter Air

Matrix Total. struct/cc n m m3 Struct/mm2 Single >-5um Struct. Struct• Bundles clusters 0 Fibers 0 0.0000 0 0 0 0 0 Chrysotile Asbestos 0.0000 0 0 0.0 0 0 0 0 0 0 0.0000 0 Amphibole Asbestos 0 0 0 Ambiguous 0 0.0000 0 0.0 0 0 0.0 N/A 0.0000 structures) 0 (includes ambiguous 0 0 0 0 0.0000 N/A Total asbestos 0 0 0 0 Non-Asbestos 0 0 0 0 0 N/A No Identification 0 0 0.0000 0 0 ----------- Totals (All Structures) d deviation. --'- analysis is 1 standar of this ana ----------------- ------------- Y The estimated uncertaint None detecte - d . (EDS/SAED) : --------------------------- Non - asbestos fiber i e : None detected --- Amphibo l e Asbestos T yp - - - - the app roved TEM method. ------------------ -- ----------- was carried out in accordance with The Analysis mpliance with the quality specified for the method 1 This laboratory is in co Report Reviewed by: Analyzed by: Michael A. Gorycki, Ph.D. Electron Microscopy Roman Peysakhov Director of

NYC-WTC 000104062

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NYC-WTC_000104062Source: NYC Law Department, mirrored locally

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