NYC-WTC_000201291

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet ClientNam^ NL'C BOE Volume (liters): 1920 Lab Group #: 7347 Filter Type / Filter Area: MCE 385 mnV 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: 4/6/02

Analysis Performed By: MARK PEYSAKHOV

Structure Type Length Cot Structure Nor 7 EDS GO. Structure (Nona.db ■ No F B C M >=05 p . >-5u Chrys Amphibole Nonasb Ambig/ND Elements) No Coord <5(J A'

Struct = > 0.5g > 5:1 Aspect Ratio Grid acceptance: N= Positive diffraction pattern properties conio-minc to <50%'undissolyed fiiter, overlapped or folded Totals laboratory identification criteria observed <10% paniculate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5u v= EDS spectrum conforming to laboratory holes or opacus areas ioentification criteria obsen/ed Clirysotile i AMPHIBOLES ' Amphibole F = Single Fiber Amosite B = Bundis (<3 fleers fiber diameter apart ; Crocidolite ’ Ambiguous C = Cluster (>3 Intersections) Anthophyllite Npn-Asbestos I Tremolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_011275579

NYC-WTC_000201294