NYC-WTC_000202510

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #: 8810 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 8 Grid Opening Size: 0,01124

i Client Sample #: /3 9^ 08 Area Examined: Magnification: 0.04496 mm’

i GRID BOX: GRID ID: Accelerating Voltage: 20,000 100 KeV # Grid Openings: 4 AjialysisDate; 9/5/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or N EDS (Nonadb No F B C M >=05 pi >=5p Chr^ 1 Amphibole Nonasb Arrbig/ND No Coord Elements) <5p i I iz- AZ. if a 1 I 1

Struct = > O.Sg >5:1 Aspect Ratio Grid acceptancs:

v= Positive diffraction pattern properties conforming to <50% utidissolved filter, overlapped or folded Totals laboratory identification criteria obsenzed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F ) B C >5|j '/= EDS spectrum confcrming to laboratory notes or opaque areas dentification criteria observed Chrysotile AMPHIBOLES Amphibole • F = Single Fiber Amosite B = Bundle (<3.fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 intersections) Anthophyllite Non-Asbestos Tremolite M = Meirix Non-Identified Actinolite NSD = No Structures Detected I.

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NYC-WTC_000202510