NYC-WTC_000229115

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1816 Lab Group #: 7893 Filter Type / Filter Area: MCE 385 mm-

Lab Sample #: 16 Grid Opening Size: 0.01124 Client Sample #: 18 Area Examined: 0.04496 mm’ GRIP BOX: .7/ Magnification: 20,000 GRID ID: Accelerating Voltage: TOO KeV # Grid Openings: 4 Analysis Date: 5/28/02

Anahsrs Performed By: /"C7^ ROMAn PEYSAKHOV

GO. Structure | Structure Type Length ID of structure Nor V EDS (Nonadb No i F B C M >=05 p >=5p Chrys Amptiiboie Nonasb Ambg/ND No Coord Elements)

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Struct = >0.5m >5:1 Aspect Ratio Grid acceptoncei ')= Positive diffraction pattern properties conforming to <50% undissolved fitter, overtapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overtapped grid squares <5% F B C M >Bp "/= EDS spectrum conforming to laboratory holes or opague areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster {>3 tntersectonsi Anthophyllite Non-Asbestos Tremolite M = Matrix Actinolite Non-ldentified NSD = No Structures Detected

CITY_21MC100_002902225

NYC-WTC_000229115