NYC-WTC_000201358

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1800 Lab Group #: - 7370 Filter Type / Filter Area: MCE 385 mnE Lab Sample #: 1-5 Grid Opening Size: 0.01124 Client Sample #: 15 Area Examined: 0.04496 rnir? GRID BOX: Magnification: 20,000 GRID ID : Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 4/10/02

Analysis Performed By: MARK PEYSAKHOV ,

GO. Structure Structure Type Length ■ IC of Structure N or 7 ■ EDS No >=05 p (Nonadb F B Ci M >=5(j Chrys Amphibole Nonasb Ambig/ND No Coord <5u- Elements)

A CIU

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Struct = > 0.5)1 _> 5:1 AspectRatio Grid accsptarce:

7= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or foided Totals laboratory identification criteria obsewed ■ <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5p > 7= EDS spectrum conforming to laboratory holes or opaque areas identification criteria obsen/ed Chrysotile j AMZHIBOLES i . Amphibole F = Single Fiber : Amosite I B = Bundle (<3 fioers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite , Non-Asbestos : Tremolite M = Matrix Non-Identified Actinolite , NSD = No Structures Detected

CITY_21MC100_011275678

NYC-WTC_000201372