NYC-WTC_000225308

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #: 6934 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 2 Grid OpeninuSiz^ 0.01124 Client Sample #: Area Examined: 0.04496 mm- GRID BOX: Maanification: 20,000 TIRIDID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/5/02

Analysis Performed By; ROMAN PEYSAKHOV

GO, Structure - Structure Type Length ID of Structure N or V EDS. ■ ,No— >=05 p (Nonadb F B C M Chrys Amphibole Nonasb Ambig/ND No . Coord <5p Elements)

z7 77^ -X- I 7 z/ i/

Struct = > U.bp > 5; I Aspect Ratio Grid acceptance.

y= Positive diffraction pattern properties conforming to <50% undissolved filler, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate

y = EDS spectrum conforming to laboratory least 20 unfol'ded or overlapped grid squares <5% Tf B C M >5|J holes or opaque areas ------ Th---------- h—I------ identification criteria observed C hiysulile AMPHIBOLES •Amphibole F = Single Fiber Amosite B = Bundle t<3 fibers <1 fiber diameter apart Crocidolite .Ambiguous

C = Cluster (>3 Intersections) Anthophyllite Non-.Asbestrrs Tremolite M = Matrix Non-itleiitified Actinolite NSD = No Structures Detected

CITY_21MC100_002921317

NYC-WTC_000225308