TEM Asbestos air sample results, NYC BOE, Apr 25 2002

NYC 9/11 Public Portal Document

rEM Asbestos (air) Count Sli 11 Client Name: NY( ‘ BOI Biters): 1j 11 1808 Lab Group #: 753D1 Filtei Type . ".'-1 Area: MCE 385 mm^ Lab Sample #: 18 Gri(L _ ip. Size; 0.01124 Client Sample #: 21 All, H mieiL: 0.04496 mm^ GRID BOX: Ji -atioii: 20,000 GRIDID: Arcelera : Voltage: 100 KeV # Grid Openings: 4 A:; ' lb Date: 4/25/02

Analysis Pet formed Bv: MARK PEY-AKHOV

GO. Structure StrucDjreType ' Length 'Id ' /- N EDS No >=05 p (Nonadb F I C ' M Chrys ' Amp.vbc nasb Ambig/ND No Coord <5p Elements)

.T <5 Z - L

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Struct = > 0.5n > 5:1 Aspect Ratio Grid acceptance: ^1= Positive diffraction pattern proper, as cc ■ -ingto <50% undissolved filte: ov.; =oped or lolded Totals laboratory identification criteria obsei -sd <10% padicuiatecove ag : % coverage ate

•/= EDS spectrum conforming to lar mator. leas: 20 unfolded oroierlap. .I grid squares <5%, holes or opaque areas c M >5m identification criteria observed ■ VIPl IIBOL21 F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diame: apai Crocidolite C = Cluster (>3 Intersections) Anthophyllite \\ Tremolite M = Matrix Actinolite NSD = No Structures Detected

CITY_21MC100_004204399

NYC-WTC_000183077