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← Document results/DEP Box 37/250 BROADWAY; Block: 124 Lot: 24 BIN: 1001408 245 Broadway, 2-4 Murray St. 1-7 Park Pl, 239- 247 Broadway
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Background sampling chain of custody, 250 Broadway, Sept 2001

Machine-extracted title · confidence 90%

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 10:41 FAX 212 353 8306 ATC Q011/020

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, 16th Floor ACCREDITED NVLAP Lab Code # 1187 New 'York, NY 10007 Report Date: 09/16/01

ASBESTOS FIBER ANALYSIS BY TRANSMISSION ELECTRON MICROSCOPY TEM (SAKO) and Enerfy-Dispersive X-RAY Spectrosocvy (EGS) Identification by Selected-Area Electron Oifiraction with Fiber 763), Vol. 52. No. 210, October 30, 1957 M thad: Ati&l.A Final Rule, E?P Federal Register (40 CF5. paw

sample identification Analyai4 sarametcr3

TQK Sample No.'_5512 - 540A0 Project/Site; 250 Broadway, NY. y Floors 31. 27, 19, 5 Grid Opofings Aaalyzedh 4 Date Received: 09/16/01

Average Grid Ogeaiugs106.00 i.e Project 8amp7.e No.•06

Total Area Analyzed: 0.0450 matt Air Volumes_ 1800 litorn

Analytical Sensitivity: 22.2 a/mm2 Filter Typo+ M= 29 mm diem__ Pore Sizes 0.45 um 0.0048 nice Effective Area; 395 mm?

----------------------------------- FIBROUS PARTICULATES ANAL'Y'ZED Number Obeerved CONCNTRATON Total

single pt,Ytrix Total. .cruet. Filter Air Struct. Struct. a-Stamm Struct/m2 Struct/cc nem/1n3 Fibers 5undlcP Clusters

0 0 0 0.0 0.0000 0 Cluyaotile Asbootaa 0 0 0

0 0 0 0.0 0.0000 0 p,Gtpb ibole Asbestos 0 C 0

0 0 0 0.0 0-0000 0 Arbiguoue 0 0 0

0 0 0.0 0.0000 0 Total anbeaton (inoludos ambiguous atrUCturssSl 0 0 0.0 0.0000 N/R Noa-Aebee.os 0 0 0 0 0 0 0.0 0.0000 N/A No Identification 0 0 0 0

0 0 0.0 0.0000 N/A Totals (All Structures) Te=e estimated uncertainty of this an4lyeis is 1 standard deviation.

Non-asbestos fiber i.d. (EDS/SAED): None detected Amphibole Asbestos Type: None detected ----------------------------------------------

--------------------------------------------------------------:

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

Analyzed by: Report Reviewed by:

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

NYC-WTC 000106085

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NYC-WTC_000106085Source: NYC Law Department, mirrored locally

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