NYC-WTC_000202581

NYC 9/11 Public Portal Document

TEM Asbesfos (air) Count Sheet Client Mame: NYC BOE Volume (liters): 19228 Lab Group #: 9090 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 3 Grid Opening Size: 0.01124 Client Sample #: 05 Area Examined: 0.04496 mm’ GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 11/11/02

Analysis Performed By; ROMAN PEYSAKHOV

GO, Structure Structure Type Length ID of Structure NorT EDS No >=05 p Amphibole (Nonadb F C M Chrys Nonasb Ambig/ND No i Coord <5|J Elements)

Y’ A. CT

/f

Photo No. (from 1 in b asbestos containing samples) Grid acceptance; Struct = > 0.5p > 5;1 Aspect Ratio <50% undissolved filter, overlapped or folded Totals 7 = Positive diffraction pattern propenies conforming to <10% particulate coverage >50% coverage ate laboratory identification criteria observed least 20 unfolded or overlapped grid squares <5% I' F i B } C pH >5p holes or opaque areas 7= EDS spectrum conforming to laboratory i Chrysotile identification criteria observed AMPHIBOLES ■ Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite I Ambiguous C = Cluster (>3 intersections) Anthophyllite \ Non-Asbestos I M = Matrix Tremolite Actinolite \ Non-Identified NSD = No Structures Detected

CITY_21MC100_003273679

NYC-WTC_000202581