NYC-WTC_000220829

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group 7413 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 6 Grid Opening Size: 0.01124

Client Sample #: ()() Area Examined: 0 04496 mm^

GRID BOX: Maenification: 20,000 GRID ID: Accelerating Voltage: '00 KeV # Grid Openings: 4 Analysis Date: 4/14/02

Analysis Performed By: MARK PEYSAKHOV

GO 1 Structure Structure Type Length ID of Structure N or V EDS (Nonadb j No F B C M >=05 p Chrys Amphibole Nonasb Arnbig/ND No Coord <5m Elements)

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Struct = > 0 5p > 5:1 Aspect Ratio Grid acceptance: <= Positive diffraction pattern propertes conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed AM <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B j C M EDS spectrum conforming to laboratory holes or opaque areas -—i— identification criteria observed Chrysotile AMPHIBOLES ' Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fioer diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Actinolite Non-Identified NSD = No Structures Detected

CITY_21MC100_000621832 NYC-WTC_000220829