NYC-WTC_000201325

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1800 Lab Group #: 7354 Filter Type / Filter Area: MCE 385 min- Lab Sample#: 14 Grid Opening Size: 0.01124 Client Sample #: 14 Area Examined: 0.04496 mm- GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 4/8/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of structure Nor •'/ EDS (Nonedb No F B C M ’=054 >=5)j Chrys AmptiiDote Nonasb Ambig/ND : No I Coord <5p Elements)

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Struct = > O.ip _> 5:1 Aspect Ratio Grid acceptance: 7= Positive dibraction pattern prooerties conformino to <50% undissolved filter, overlapped orfolded Totals iabcratory idantification criteria observed <10% particuiate coverage >50% coverage ate least 20 unfolced or overlapped grid squares <5% F B C M >5p y- EDS spectrum confarming to laboratory holes or opaque areas identification criteria observed Chrysotile i AMPHIBOLES I Amphibole F = Single “iber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) i Anthophyllite Non-Asbestos i T'emolite I M = Matrix Non-Identified Actinolite NSD = Uo Structures Detected

CITY_21MC100_011275633

NYC-WTC_000201338