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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

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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 10:41 FAX 212 353 8306 ATC l 010/020

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 pate: 09/16/03.

A~ S~t ESTOS FIBER ANALYSIS av TRANSMISSION ELECTRON MICROSCOPY TEM .~1.7D.Ct67;v y,r~ FIBER (IDs) with Fiber Idcntiticatioa by Selected-Ares Electron Dirfractioa (916=1 and ax=SY-Dispersiva X-RAY Spectroscopy Part 7531, Vol. 52. So. 210, October 30, 1957 Meters ABERA Final Rule, EPA Federal Regioter (40 CFR,

samolo Xdeutificatq io1vtis parametorn

Tst Sa-,Fle No.: 5512 - 59079 po ct/Site 250 rosdwa Floors 31, 27. 19, 8 Grid Openings Analyzed:4 Date Received& 09 S 01

Project sample No.s 05 AveraSo Grid Opening: 105.00 um

Air Volumos 1800 liters Total Area Analyzeds 0.0450 mm2

Analytical SeauitiVity: 22.2 n/seti2 Filter TypesMC¢ 25 mm diem.. Pore Size: 0.45 us Effective Areas 385 smn2 _ 0.0048 n cc

---------------------------------------------------'-------------------•------------------------------------ '

FIBROUS PARTICULATES ANALYZED Number Cbsexyed CONCENTRATION Total single Matrix Total. strict. Filter Air steuct. 5 . -sux S-rvct/mxt strict/-c n05/m3 More Bundles Clusters•

0 0 0 0 0.0 0.0000 0 cbryaotile Asbostoa 0 0

0 0 0 0.0 0.0000 0 Amphibole Asbestos 0 0 0

0 0 0 0 0 0.0 0.0000 0 Ambiguouo 0

C 0 0.0 0.0000 0 Total asbestos (include~ ambiguous structures) 0 0 0 0 0 0 0.0 0.0000 N/A Non-Asbestos 0 0 0 0 C 0.0 0.0000 N/A No Identification 0

0 0 0.0 0.0000 N/A Totals (All 3tructurea) The estimated uncertainty of this analysis is 1 standard dev-ation.

Non-asbestos fiber i.d. (EDS/SHED): None detected Amphibole Asbestos Type: None detected ----------------------------------------------------------------------------;----•--------------------------------- The Analysis was carried out in'accordance with the approved TEN method. This laboratory is in compliance with the quality specified for the metl

Analyzed by: Report Reviewed by:

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

NYC-WTC 000106084

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NYC-WTC_000106084Source: NYC Law Department, mirrored locally

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