NYC-WTC_000207930

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #: 9205 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 5 Grid Opening Size: 0.01124

Client Sample #: 07 Area Examined: 0.04496 mni-

GRIP BOX: iMagnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 12/23/200

Analysis Performed By: ROMAN PEYSAKHOV

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

7^ 7 ___

4^

I______________________________________________ I I I ______ l_J_______ l__l________ _________ ______ Photo No itrcm 1 in 5 asbestos containing samples) Gnd acceptance. Struct = > G.5u > 5:1 Aspect Ratio undissolved filter, overlapped or folded Totals yi= Positive diffraction pattern properties conforming to <10% particulate coverage >50% coverage ate laboratory identification cnteria observed least 20 unfolded or overlapped gnd squares >5u , <5% holes or opaque areas F B C Vl EDS spectrum conforming to laboratory Identification criteria ooserved Chrysotile AMPHIBOLES ! Amphibole F = Single Fiber Amosite 5 = Sunale (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Tremolite Non-Asbestos M = Matrix Actinolite N'on-Identified NSO = No Structures Delected

CITY_21MC100_003017263

NYC-WTC_000207930