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← Document results/DEP Box 37/345 CHAMBERS STREET; Block: 16; Stuyvesant HS
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Air sample results, Stuyvesant High, Sept 2001

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Transmission electron microscopy analysis of air samples from Stuyvesant High School floors six through eleven dated September 30, 2001.

NYC-WTC_000106764–000106847

Folder label: “345 CHAMBERS STREET; Block: 16; Stuyvesant HS”

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NYC 9/11 Public Portal Document

Environmental, Inc. ATC Street 104 East 25th 10010 York New York, New ELAP *10879 Approved N . Y . State Code * 1187 Construction Authority ACCREDITED NVLAp Lab N.Y.C. School 10/04/01 Avenue Report Date: 30-30 Thomson 11101 Long island City, NY UTltvly L-- Aj,Y BY T I SION EL DieOersive x RAY s pectroscoPY ( ) AS E S FIBER Electron Diffraction (SAED) and Energy 1987 Selected-Area• 210, October 30, 52, No. Identification by Part 763), Vol. With Fiber Federal Register (40 C . Rule, EPA Method: ARM Final Parameter * alvais Identification 59960 a ml 5 559 TEN Sample No.: 345 Chain rs St NY NY project/Site: u e ant H S Analyzed Floors 2 5 Escalator Grid Openings

ReCeiVed_22L3 01 0 Date wing: 10 Average Grid 2>5 a_i013-28 project Samele No.: ed; L 0450 mm2 . Total Area Ana1Yz --~

Air VOlume: ' s6 22 2 s/mm2 Sensitivity:~~ Analytical um ~ - diem Pore Size: 0.45 Filter Type: M Effective Area: 385

-------------------------------------- - - ANAAOYZED CONC NTR.A'T MI FTBROUG PARTIC;LTLAT Nuatnr observed Total Air Filter struct. n m3 Matrix Total. t/ ctr, I-/cc St Single Struct. St Bundles clus rs Fibers 0•0046 152 1 22.2 0 1 } 1 0 0 0.0000 0 Chrysotile Asbestos 0.0 a, . 0 0 0 0 0 0 Amphibole Asbestos 0.0000 0 ars• 0 0 0.0 nS 0 0 0 152 0 0.0046 g=~ Ambiguous 1 22.2 0.0000 N/A structures) 0 0.0 N/A am iguous 0 0 0 0.0000 Total asbestos (includes 0 0.0 0 Non-Asbestos 0 0 0 0 0 N/A No Identification 0.0046 22.2 1 1 _________ -------- Totals (All Structures) sis is 1 standard deviation. ------------------------ ---- of this analY --- -------___ -- The estimated uncertainty ------------------ - -- None detected < ~., - ---- (EDS SAED) ----------------------------- Non-asbestos fiber iType: . d. None detected --------- -- - i Amphibole Asbestos ------------------------------------ --- ------ - the approved TEM method. theequa li th metho -- --------------------- -- carried out ality specified for the was .:! The Analysis is in comp eawith This lab oratory ~~:~•. Report Reviewed by Analy zed by : Ph.D. Michael A. Gorycki, Microscopy Electron Director of Roman Peysakhov

NYC-WTC 000106828

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NYC-WTC_000106828Source: NYC Law Department, mirrored locally

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