TEM Asbestos air sample results, NYC BOE, Mar 2002

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1946 Lab Group #: 6933 Ijlte£TAj)e%jMker^Vr^aL MCE 385 Lab Sample #: 7 GritLOpeningSize: 0.01124 Client Sample #: 10 Area Examined: 0.0449b mm-

GRID BOX: Mamiifieatipn: 20,000 GRID ID: ■Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/5/02

Analysis Performed By: _______ l\y _____ ROMAN PEYSAKHOV

GO Structure Structure Type Length ID of Structure N or v EDS (Nonadb ' No fTb C * M ! It. ' '=5p i Chrys i Amphibole Nonasb [ Ambig/ND^ No Coord <5p ----- 1----- Elements)

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Struct = ' O.pLi > 5:1 Aspect Ratio Grid acceptance:

n's Positive diffraction pattern properties conforming to <50% undissolvea filter, overlapped or folded Totals <10°'o particulate coverage >50% coverage ate laboratory identification criteria observed least 20 unfolded or overaopea grid squares <5% i F i B i C i M I"■ 'j: EDS spectrum conforming to laboratory noies or opaque areas l Identification catena observed C liiA sotile amphiboles .Amphibole F = Single Fiber Amosite B = Bundle i<3 fibers ■ ’ uber diameter apan Crocidolite .Ambiguous C = Cluster l>3 Intersections! Anthophyllite Noii-.Asbcstos Tremolite M = Matrix Actinolite Noii-kleiuitied NSD = No Structures Detected

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NYC-WTC_000183221