TEM asbestos air sample results, NYC BOE, Jan 2003

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Vuliisue (liters!: 1875 Lab Group 6386 Lilli'/ I VIA '4' iiter Area: MCE 385 miw Lab Sample #: 6 IuLIS 4ing Size: 0.01 I 24

Client Sample #: 06 AI ca J xaniiiied: 0.04491;

GRID BOX: MaLuitication: 20,000 GRID ID: A-cceRratittg Voltage: 100 KeV # Grid Openings: 4 Antitvsis Date: 1/20/03

Analysis Performed B ■ ROMAN PEYSAKHOt'

GO. Structure Structure Type ’ Length iC O' L .ructure N or 0 EDS No (Nonadb F E C ’=0^4-■ . >=5p Chrys Amphioole Nonasb Ambig/ND ' No Coord i <5tJ Elsments)

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Struct = > (1.5LI > 5:! Aspect Ratio G'ic ncrepiance: Positive diffraction aattern properties conforming to <509; ;.iridissolved filter, oveiiapped or folued Totals laboratory identification criteria ebservsd <'O9. particulate coverage >50% ceveragt ate least 20 iinfolaed or overlapped gnti squares <5% F B C M =•50 V= EDS spectrum conforming to laboratory holes Bi opaque areas identification criteria observed Chi sotile amphiboles i Ampiiibole F = Single Fiber Amosite ; B = Bundle (<3 fibers <1 fiaer diameter apan A mbuuous Crocidolite C = Cluster (>3 Intersections: Authopnyllite NoLi-Asirestos 'remotitBcl . M = Matrix . NouOdeiuified Actinolite NSD = No Structures Detected

CONFIDENTIAL, SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008 CITY_21 MC100_014660183

NYC-WTC_000174759