NYC-WTC_000212995

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Clienc Name: NYC BOE Volume (liters): 1920 Lab Group #: S300 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: (I Grid Opening Size: 0.01124

Client Sample #: 06 AreaEjtamine^ 0.04496 mm'

GRID BOX: Magnification: 20,000 GRID ID; Accelerating Voltage: too KeV # Grid Openings: 4 Analysis Date: 6/26/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or v EDS (Nonadb No F B C M >=05 p >=5m Chrys Amphibole Nonasb Ambig/ND No Coord <5u Elements)

JZSZ J■ /W 5^'

Struct == > 0.5(1 > 5; I Aspect Ratio Grid acceptance; ^/= Positive diffraction pattern proirerties oonfomning 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 >5n V= EDS spectrum conforming to aboratory holes or opaque areas identification critena 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 = Matrix Non-Identified Acbnolite NSD = No Structures Detected

CITY_21MC100_002867779

NYC-WTC_000212995