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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

ATC Environmental, Inc. 104 East 25th Street New York, New York 10010 #10879 Approved N.Y. State ELAP 1187 ATC Associates Inc. ACCREDITED NVLAP Lab Code # 104 East 25th Street Report Date: 10/25/01 New York, NY 10010 MICROSCOPY BYEI TRANSMISSION sAE~ELECTRON y Df ASBESTOS FIBER ANALYSIS X-RAY Spectroscopy (EDS) Ene r5i Selected- Area on 1987 Identification by 30, With Fiber 52, No. 210, October (40 CFR, Part 763), Vol. EPA Federal Register Method: AHERA Final Rule,

Analysis Parameters Sample Identification 62233 TEM Sample No. : 5762 - NY I 105 Duane St., 9W Project/Site: Tribeca sVarious imS tes Grid Openings Analyzed:....A Date Received: 10 25 01 ~6 ~0 um Average Grid Opening:_ 10 19 Project Sample No.: Total Area Analyzed:_ 0.06 ~ _74 m-2

Air Volume: 130O litters _~s=2 14 Analytical Sensitivity: Pore Size: 0.45 um ~ ~/cc 0.0 Ogg Filter Type: MCE 25 mm diem. , Effective Area: 385 mm2

------------------ ---- FIBROUS PARTICULATES ANALYZED CONCENTRATION Number Observed Total Filter Air Matrix Total. Struct. n m3 Single Struct/mm2 Struct/ec Struct. ,=Sum Struct.

I Fibers Bundles Clusters

0 ° 0.0 0.0000 0

I Chrysotile Asbestos ° 0.0 0.0000 0 0 0 0 Amphibole Asbestos 0 0 0.0 0.0000 0 0 0 Ambiguous • 0.0000 0 0 0 0.0 ambiguous0 structures) 0 0 0 0.0000 N/A Total asbestos (includes p 0 0 0 N/A I Nan-Asbestos 0 0 0 0 0.0000 0 0 0 0 0 No Identification 0 0.0 0.0000 N/A 0 0 Totals (All Structures) standarddeviation. of this analysis is i The estimated uncertainty ------------- ------------- ------------- ------------ ------- (EDS/SAED): None detected i.d. Non- asbestos fiber None detected Amphibole Asbestos Type: _ ------------------------------------------- - --the ecproved TEM method. quality eP The Analysis was carried out in accordance with fied for the method This laboratory is in compliance with the

Report Reviewed by: Analyzed by:

Michael A. Gorycki, Ph.D. Microscopy Roman Peysakhov Director of Electron

NYC-WTC 000104057

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NYC-WTC_000104057Source: NYC Law Department, mirrored locally

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