NYC-WTC_000201227

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters I: 1840 Lab Group #: 7291 Filter Type / Filter Area: MCE 385 mm"

Lab Sample #: Grid Opening Size: 0.01124

Client Sample #: 07 , Area Examined: 0.04496 mm’

GRID BOX: Magnification: 20,000 "■'7 X

GRIDID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 4/1/02 Analysis Performed By: KJ

. ROMAN PEYSAKHOV

GO, Structure S'ructJre Type Length ID of structure N or 4 EDS (Nonadb No B C M >=05 p =50 Chrys .Amphiboie Nonasb .Ambig/ND No Coord <5p Elemerts)

2:32 -It-M

Struct = >0.5q >5:l Aspect Ratio Grid acceptance: 4= Positive diffraction pattern properties conforming to <50% undissoived filter, overlapped or folded Tot^ laboraion/ identification criteria observed <1C% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >50 4= EDS spectrum conforming tc laboratory holes or opaque areas identificatior criteria observed Cluysotile AMPHIBOLES Amphibole F - Single Fiber Amosite S = Bundle (<3 fibers <1 fiber diam.eter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Noil-Asbestos Tremolite M = Matrix ; Non-Identified 1 Actinolite NSD = No Structures Detected

CITY_21MC100_011275494

NYC-WTC_000201233