TEM Asbestos air sample results, NYC BOE, Feb 2002

NYC 9/11 Public Portal Document

TEMAsbestos/air) Count Sheet Client Name: NIC BOE Volume (liters): 1808 Lab Group #: 6856 Filter Type / Filter Area: MCE 585 mm- Lab Sample #: ]1 Grid Opening Size: 0.01 124 Client Sample #: 14 Area Examined: 0.04496 mim-

GRID BOX: c Magnification 20,000 GRID ID: % Accelerating Voltage: 100 Ke\- # Grid Openings: 4 Analysis Date: 2.'27/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure type Length ID of Structure N or > I AC No l-AmbigfND \ F B C I M '"tL- i >=5p Chrys Amphibole | Nonasb No Coord <5p I 1 Eiementsj

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i I 1

!___ ! 1 1

Struct = > 0.5(j >5:1 Aspect Ratio Grid acceptance: 4= Positive diffraction oattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate

G EDS spectrum conforming to laboratory least 20 unfolded or overlapped grid squares <5% holes or opaque areas P B C I M ’ip

identification criteria observed Chrysotile I .AMPHIBOLES Amphibole F = Single Fiber Amosite E = Bundle (<3 fibers <1 fiber diameter apan Crocidolite Ambiguous C = Cluster (>3 Irlersections) Anthophyllite Non-Asbesios M = Matrix Tremolite Actinolite Non-Identified NSD = No Structures Detected

CITY_21MC100_003103597

NYC-WTC_000183960