NYC-WTC_000202035

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1840 Lab Group #: 7146/ ; Filter Type / Filter Area: MCE 385 mnV Lab Sample #: 10 Grid Opening Size: 0.01124

Client Sample #: 10 < Area Examined: 0.04496

GRID BOX: Magnification: 20,000 i GRIDID: SAI Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/20/02 / i

Analysis Performed By: ROMAN PEYSAKHOV

GO. -Structure Structure Type Length ID of structure N or / , EDS (Monadb '. No F B G M. . >=05 p tj >=5p Chrys Amphibole Nonasb Ambig/ND No Coord Elements) G *i5p

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n

Struct = > 0.5|i > 5:1 Aspect Ratio Grid acceptance: ?/= 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 ovedapped grid squares <5% F B C M >5p EDS spectrum conforming to-laboratory holes or opaque areas identification criteria observed - Chrysotile AMPHIBOLES Amphibole t F = Single Fiber i y - i i Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C =Ctuster (>3 Intersections) t ; t i■ i t Anthophyllite Non-Asbestos ■itM=A1atrixi t I ■/ tt^iT Tremolite Actinolite Non-Ident.fied I NSD = No Structures Oetectsd'r it

CITY_21MC100_011276029

NYC-WTC_000202035