TEM Asbestos air sample results, NYC BOE, Feb 2002

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NN’C BOE Volume (liters): 1S24 Lab Group #: 6705 Filter Type / Filter .Area: MCE 385 mni- Lab Sample #: 11 Grid Opening Size: 0.01 124 Client Sample #: 14 Area Examined: 0.04496 nun-

GRID BOX: GRIDED: 2M 527^7 Magnification: -Accelerating Voltage: 20,000 100 KeV # Grid Openings: 4 ■Analysis Date: 2/17/02

Analysis Performed By: ROMAN PEYSAKHO V

GO, Structure Structure Type Length ID of Structure N or nJ EDS No (Nonadb F B C M >=05 p >=5|j Chrys Amphibole Nonasb . Ambig/ND No Coord <5u Bements)

-5# Jr //

Struct = > 0.5g ,>5:1 Aspect Ratio Grid acceptance: 7= Positive diffraction pattern properties conforming to <50% undisso'ved filter, overlapped or folded TotaJs <10% particulate coverage >50% coverage ate laboratory identification criteria obsen/ed least 20 unlolded or overiapped grid squares <5% [ C M >5p 7= EDS spectrum conforming to laboratory holes or opaque areas t identification criteria observed Chiysoule I AMPHIBOLES Amphibole I r = Single riper Amosite Ambiguous | E = Bundle (<3 fibe.rs <1 fiber diameter apart C = Cluster {>3 intersections) Crocidolite .Anthophyllite Tremolite Non-Asbestos : -4 M = Matrix I Non-Identified I Actinolite i. NSD = No Structures Delected

CITY_21MC1OO_OO31O3273

NYC-WTC_000183809