NYC-WTC_000228389

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Nanae: NYC BOE Volume (liters): 1920 Lab Group #: 6502 Filter Type / Filter Area: MCE 385 mm^ LabSaippk#,: 11 Grid Opening Size: 0.01124

Client Sample #; 11 Area Examined: 0.04496 mm^ GRID BOX: 7*^^ Magnification: 20 000 GRID ID; Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 1/30/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure Nor v EDS No (Nonadb F B G M »05m Chrys Amphibole Nonasb Ambig/NO No Coord <5p Elements)

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Struct» > 0.5p > 5:1 Aspect Ratio Qrid acceptance; ’/=> Positive diffraction pattern propardes conforming to <50% undissotved flltar, overlapped or folded Totals laboratory identificatiwi criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5p y/- EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile I AMPHIBOLES ; Amphibole F = Single Fiber Amosite j 8 ’ Bundle (<3 fibers <1 fiber diameter apart Crocidoiite ( Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M^Matnx Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_000491349 NYC-WTC_000228389