NYC-WTC_000216058

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NN'C BOE Volume (liters): 1952 Lab Group #: 7233 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 10 Grid Opening Size: 0.01124

Client Sample #: 10 Area Examined: 0.04496

GRID BOX: w Magnification: 20,000 GRID ID: 2//)/ Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/27/02

Analysis Performed By: ROMAN PEYSAKHOV

GO; Structure Structure Type Length ID of Structure Norv EDS No - >=05 p (Nonadb F B C M Chrys Amphibole Nonasb Ambig/ND _, No Coord <5m Elements)

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

CITY_21MC1OO_OO2876395

NYC-WTC_000216058