NYC-WTC_000229249

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume niters): 1832 Lab Group #: 8038 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 16 Grid Size: 0.01124

Client Sample #: 18 Area Examined: 0.04496 GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Pate: 6/10/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of structure Nor V EDS (Nonadb No F B 0 M >*05 p >=5p Chrys Amphtoole Nonasb Amtsg/ND No' Coord Elements) <5p

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Struct = > 0 5n > 5;! Aspect Ratio Grid acceptance: n'= Posihre diffiaefion pattern properties conforming to <50% undissoived IWer, gyeriapped or folded Totals iabcratoiy identificalion (rteria observed <10% parlieulate coverage >50% coverage ate least 20 unfolded or ovelapped grid squares <5% F B C M >5m = EDS spectrum conforming to laboratory holes or opaque areas idenbSeadon criteria observed Chrysotile ! AMPHIBOLES Amphibole F = Single Fiber ' Amosite 0 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) ! Anthophyflite ! Non-Asbestos Tremolite M = Matrix Actinolite Non-Identified NSD = No Structures Detected

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NYC-WTC_000229249