NYC-WTC_000208569

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: Cole Volume (liters): 450 Lab Group #: 7744 Filter Type / Filter Area: MCE 385 Lab Sample #: 1 Grid Opening Size: 0.01124 Client Sample #: 01 Area Examined: 0.1124

GRID BOX: /73 Z Mannification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 10 Analysis Date: 5/15/02

Analysis Performed By: Z.,,/

ROMAN PEYSAKHOV

■ GO. Structure Structure Type Length ID of Structure N or 7 EDS No Nonasb (Nonadb F B C M >=05 (J >-5p Chrys Amphibole i\mbig/ND No Coord <5p Elements)

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Struct = > 0.5p >.5:1 Aspect Ratio Grid acceptance: ^1= 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 overiapped grid squares <5% F B C M >5p ■I 7= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite S = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos M = Matrix Tremolite Actinolite Non-Identified NSD = No Structures Detected

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NYC-WTC_000208569