NYC-WTC_000201927

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYG BOE Volnnie (liters): 1827.5 Lab Group #: 6734 Filter Type / Filter Area: MCE 385 mnV Lab Sample 1 Grid Opening Size: 0.01124 Client Sample #: 01 Area Examined: 0,64496 mm^ GRID BOX: Magnification 20,000 GRID ID : Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 2/19/02

Analysis Performed By: MARK PEYSAKHOV

• GO, Structure Structure T ype Length ID ol Structure N or 7 EDS No (Nonadb F B C M >=05 (J >^5p Clirys Amphiboie Nonasb Ambig/ND No Coord <5m Etements;

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Sti-uct = >0-.5|i >5:1 Aspect Ratio I Grid acceptance: 7= Positive diffractionpattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identificaticn criteria observed . <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B M >5u 7= EDS spectrum ccnforming to laboratory holes or opaque areas identification criteda observed CliTvsotile AMPHIBOLES i Amphibole F = Single Fiber Amosite B = Bundle (<3 libers <1 fiber diameter apart Crocidolite Ambiguous - C = Cluster (>3 rnterssctions) ' Anthophyllite Noii-A.sbestos 1 M = Matrix ! i Tremolite Actinolite I Non-Identified NSD = No Structures Detected

CITY_21MC100_003269666

NYC-WTC_000201927