NYC-WTC_000201983

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1840 Lah Group #: 7203 Filter Type / Filter Area: MCE J 85 mm- Lab Sample #: ] Grid Opening Size: 0.01124 Client Sample #: 01 Area Examined: 0.04496 mm2

GRID BOX: Magnification: 20,000 GRID ID : Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/25/02 /

Analysis Performed By: ROMAN PEYSAKHOV

GO; - Structure Structure Type Length ID of structure Nor N . EDS / No >=05 M Nonasb Ambig/ND (Nonadb F B C M >=5j Chrys Amphibole Elements) , No: Coord <5m

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; Struct = > 0.5p > 5:t Aspect Ratio Grid acceptance: At Positive di'fraction pattern propedies conforming to <50% undissolved filter, overiapped or folded Totals ■ laboratory identification■'criteria observed <10% particulate coverage >50% coverage ate V- EDS specliuni conforming to laboratory least 20 unfolded or overiapped grid squares <5% F B c M- ! , >5p. . holes or opaque areas identificatior criteria observed Chiysotile ! AMPHIBOLES “1 , Amphibole / F = Single Fiber Amosite 4 6 - Bundle (<3 fibers <1 fiber diameter apart Crocidolite ; i Ambiguous C = Cluster (>3 Intersections) Anthophyllite i Non-Asbestos Tremolite .M— Matrix ; ■ Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_011275933

NYC-WTC_000201983