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Background sampling chain of custody, 250 Broadway, Sept 2001

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Chain of custody documentation for background sampling including asbestos and lead at 250 Broadway in September 2001.

NYC-WTC_000106077–000106100

Folder label: “250 BROADWAY; Block: 124 Lot: 24 BIN: 1001408 245 Broadway, 2-4 Murray St. 1-7 Park Pl, 239- 247 Broadway

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NYC 9/11 Public Portal Document

10/01/2001 10:43 FAX 212 353 8306 ATC Q018/020

ATC Environmental, Inc. 104 East 25th Street New York, New York 10010 N.Y.C. Housing Authority Approved N.Y. State ELAP ##10879 250 Broadway,*l6th Floor ACCREDITED NVLAP Lab Code * 1187 New York, NY 10007 Report Date: 09/16/01 ASBESTOS FIBER ANALYSIS BY TRANSMISSION ELECTRON MICROSCOPY (TEM) with Fibor Identification by Solactod-Area Rleotron DiffractL n (SAID) and Energy-Diapersive X-RAY spectroscopy CEDE) Method: EERA Final Rule, EPA Federal Register (40 CPR, Part 763), V01. 52, No. 210, Oetober 30, 1987

Samajgj Wentification Analysis Parameters

P icot/Sits: 150 Arosdww. NY. NY Ti.( Sample No.: 5312 - 59087 Floors 31. 27. 19. 8 Date Received: 10/01 Crid Oponinge Aaalyzod:

Project SanWle No.:fl Average Grid Opening: 106.00 um

Air Volume: 1800 liters Total Aron Anslyzed: 0.0450 ,em2

Piltor Typo: MCP. 75_tnm diem.. Pere Size: 0.65 um Analytical Sensitivity, 22.2 M/mmx Effective Area: 385 mn2 0.0048 s/cc

FXSROUS PARTICULATES ANALYZED Numbor Observed CONCENTRATION Total single Matrix Total. struet. . Filter Air Mors BBVnd15:.7 O1u:lhnr:l Struet. Struct. av5urn Struct/m<n2 Struct/cc twm/e3

C'hryaotile Aoboetoo 0 0 0 0 0 0 0.0 0.0000 0

Amphibole Asbestos 0 0 0 0 C 0 0.0 0.0000 a

Ambiguous 0 0 0 0 0 0 0.0 0.0000 C

Total asbestos (includes ambiguous structures) 0 0 0.0 0.0000 0 Non-Aabootoa 0 0 0 0 0 0 0.0 0.0000 N/A No identification 0 0 C 0 C o 0.0 0.0000 N/A

Totals (All Structures) 0 0 0.0 0.000C N/A The esticiatcd uncertainty ofi this ara:.yoi3 is 1 standard deviation. ---------------------------------------------------------------------------------------------------------------------------- Non-asbestos fiber i.d. (EDS/SAED): None detected Amphibole Asbestos Type: None detected ---------------------------------------------------------------------------------------------------- •• -----------------------

The Analysis was carried out in accordance with the approved TEM method. This laboratory is in compliance' with the quality specified for the metho

Analyzed by: Report Reviewed by:

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

NYC-WTC 000106092

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NYC-WTC_000106092Source: NYC Law Department, mirrored locally

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