NYC-WTC_000202890

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: ATC Volume (liters): 3700 Lab Group #: 9035 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 20 Grid Opening Size: 0.01124

Client Sample #: 20 Area Examined: 0.24728 mm^

GRID BOX: Magnification: 20,000 GRID ID: ■Accelerating Voltage; 100 KeV # Grid Openings: 22 Analysis Date: 10/29/02

Analysis Performed By: ROMAN PEYSAKHOV

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

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1 I '' Hhoio No. (from 1n 5 asbestos containing ------------------- samples) --- ------ ,__ _ „ „- r. ■ „ . acceptance: <50% undissolved filter, overlapped or folded Totals V= Positive diffraction pattern properties conforming to <10% particulate coverage >50% coverage ate laboratory identification cntena observed least 20 unfolded or overlapped grid squares <5% F i B C yl- EDS spectrum conforming to laboratory holes or opaque areas Chrysotile identification cntena observed A.MPHIBOLES ■Amphibole F = Single Fiber Amosite 3 = Bundle '<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-.Asbestos i Tremolite M = Matrix Non-Identified i NSD = No Structures Detected Actinolite ...... J._

CITy_21MC100_003069453

NYC-WTC_000202909