NYC-WTC_000200814

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NV^C BOE Volume (litersY: 1S4Q Lab Group #: -7670 Filter Type / Filter Area: MCE 385 mm* Lab Sample #: 4 Grid Opening Size: 0.01124

Client Sample #: 04- Area Examined: 0.04496 mm*

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 5/8/02 '

Analysis Performed By: /y

ROMAN PEYSAKHOV '

GO. Structure ' Srructure Type [ Length ID of Structure NorN EDS No ip (Nonadb B C M >=05 p >=5)J Chrys Amphiboie Nonasb Ambig/ND No Coord <51J Elements).

ii —4li——

Struct->. 0.5g >5:1 Aspect Ratio Grid acceptance: 0= Positive diffraction pattern properties conforming to <50% urdissoved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfoloed or overlapped grid squares <5% F B C M EDS spectrum conforming-to laboratory; ■5P holes or opaque areas identification criteria observed ■ Chrysotile i A.YPHIBOLBS Amphibole F - Single Fiber Amosite E = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix . Actinolite Non-Identified NSD = No Structures Detected

CITY_21MC100_011275159

NYC-WTC_000200817