NYC-WTC_000218233

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #: 7161 Filter Type / Filter Area: MCE 385 mm- Lab Sample #; 12 Grid Opening Size: 0.01124

Client Sample #: 12 Area Examined: 0.04496 mm- GRID BOX: Magnification: 20 000 GRID IP: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3 '21 /02

Analysis Performed By: MARK PEYSAKHOV

GO Structure Structure Type Length ID of Structure N or V “EDS I No (Nonadb I F B C M >=05 M >=5p Chrys Amphibole Nonasb Ambig/ND No Coord <5p Elements) i

4 a

Struct = > 0.5n >5:1 Aspect Ratio Grid acceptance: V= 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 grid squares <5% F C I M 'Ap EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile i AMPHIBOLES I Amphibole F = Single Fiber ‘ Amosite B = Bundle (<3 fibers <1 fiber diameter apart I Crocidolite Ambiguous 1 i C = Cluster (>3 Intersections) 5 Anthophyllite Non-Asbestos ' Tremolite M = Matrix Non-Identified : Actinolite i i NSD = No Structures Detected

CITY_2IMCl0 0_0 0046613 9 NYC-WTC_000218233