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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 10:40 FAX 212 353 8306 - ATC E 1008/020

ATC Environmental, Inc. 104 East 25th Street New York, New York 10010 Approved N.Y. State FLAP #10879 N.Y.C. Housing Authority ACCREDITED NVLAP Lab Code # 1187 250 Broadway, 16th Floor Report Date: 09/16/01 New York, NY 10007 MICRO COPY EM ASBESTOS FIBER ANALY IS BY TRANSMISSION ELECTRON (F,1)5) slectraa Diffraction. an Fxergy-Dispor*ive x-RAY Sgectroacoyy (57t ) With Fiber Identification by selected-Area 30, 1957 CPR, Bart 743), Vol. 52, 0o. 210, Octobcr W,thod: rt`RA Pinal Rule, EPA Federal Register (40

8amoln XdttficatLq r' •alvnie Parametcr~

'r4 SaTylc No.: 5512 - 59021 Project/Situ 250 5r dra FiROYs 31, 27. 19, 8 Grid crenings Analyzed:S . Date Aeceiveds _0913.6/03.

Average Grid Opening: 106,00 we Project sample No.: 03

0.04 Total Area Analyzedt__._50 nez Air volumes 1800 litc*•s

Xnalytieal Sensitivity: 22.2 s/! Filter typo) Mae 25 nm4 diam.• Pere 2e .4S um 0.0048 C/ce 8gfeetive Area: 385 umt2

^-----------------•-------------------------------------------------------------------------------- --

FIBROUS PARTICULATES ANALYZED Number baerva CONCENTRATION Total Matrix Total. stn tct. Filter Air Singly a-Sae Struct/n 2 Strnct/cc "a./m3 Fibers Bundles Clusters Street. stru:t.

1 0 22.2 0.0048 3.57 Obrysotile Asbcstoe a 0 0 1

0 0 0 0.0 0.0000 0 Amphibole Asbestos 0 0 0

0 a 0,.0 0.0000 a Ambiguous 0 0 0 0

1 0 22.2 0.0048 157 Total asbestos (includes ambiguous structures) 0 C 0.0 0.0000 N/A Nen-Aabestoe 0 0 0 0 0 0 0.0 0.0000 N/A No Identification 0 0 0 0

V Total* (All structures) L --'- ------ deviation. The catimated uncertainty of thin analysis is 1 atandafd

Non-asbestos fiber i.d. (EDs/SAED): None detected Amphibole Asbestos Type: None detected TEM method. The Analysis was carried out in accordance with the approvedfor the meth This laboratory is in compliance with the quality specified

Analyzed by: Report Reviewed by:

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

NYC-WTC 000106082

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NYC-WTC_000106082Source: NYC Law Department, mirrored locally

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