NYC-WTC_000189794

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1848 Lab Group #: 6565 Filter Type / Filter Area: MCE 385 mnV Lab Sample #: 15 Grid Opening Size: 001124 Client Sample #: 18 Area Examined: 0 04496 mm^

GRID BOX: Magnification: 20,000 GRIDID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 2/5/02

Analysis Performed By: ROMAN PEYSAKHOV

GO Structure Structure Type Length ID of Structure Nory EDS No ■>^0571 : (Nonadb F B C M ■=5p Chrys Amphibole Nonast Ambig/ND Elements) No Coord <5p

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Struct = > 0 _> 5 1 Aspect Ratio Gnd acceptance 'J= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped gnd squares <5% F B C M I >5u n/= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile ^AMPHIBOLES F = Single Fiber Amphibole Amosite B = Bundle {<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Actinolite Non-Identified NSD = No Structures Detected

CITY_21MC100_003088177

NYC-WTC_000189794