TEM asbestos air sample results, NYC BOE, Nov 2001

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet ClientNam^ WC BOE Volume (liters): I Q36

Lab Group #: 5386 Filter Tvpe / Filter Area: MCE 385 mm- Lab Sample #: Grid Opening Size: 0.01124 Client Sample #: 3 Area Examined: 0,04496 mm-

GRID BOX: -5 Magnification: 20.000 GRIDED: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 11/13/01

Analysis Performed By: MARK PEYSAKHOV

GO. Structure i Structure Type Length ID of Structure N or EDS (Nonadb No C j M >=05 u Chrys Amphibole Nonasb j Amoig/ND No Coord <5tJ I Elements) I I i S'

I I

H

i

I !

i I

Struct = > 0.5p .> 5:1 Aspect Ratio Gnd acceptance:

Positive diffraction pattern properties conforming to <60% undissolved filter, overlapped or folded Totals <10% particulate coverage >50% coverage ate laboratory identification criteria observed least 20 unfolded oroveriapped grid squares <5% F I B ! C >6u EDS spectrum conforming to laboratory holes or opaque areas identification criteria obsen/ed Chrysotile AMPHIBOLES : Amphibole F = Single Fiber Amosite 8 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous I I

C = Clusier (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix I Non-Idennfied Actinolite NSD = No Structures Detected

CITY_21MC100_003106355

NYC-WTC_000185306