NYC-WTC_000219581

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1840 Lab Group #: 6989 Filter Type / Filter Area: MCE 385 mm-’ Lab Sample #: 7 Grid Opening Size: 0.01124

Client Sample #: 09 Area Examined: 004496 mm-

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3'9/02

Anaiysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length iD of Structure N or v iNonaac No F B C M >=05 p ;>=5|J Chrys Amphibole ! Nonasb Ambig/NO No Coord Elements i <5m

Struct = > 0.5p > 5:1 Aspect Ratio Gnd acceptance;

N= Positive diffraction panem properties conforming to <50% undissolved (liter, overlapped or foideo Totals <10% particulate coverage >50% coverage ate laboratory identification criteria observed least 20 unfolded or overlapped grid squares <5% f ' F i B C M v= EDS spectrum conlorming to laboratory holes or opaque areas 1 J--------- L-------- i---------- 1---------- r ideniification cnteria observed (/hrvsotile i AMPHIBOLES .Amphibole ■ F = Single Fiber Amosite S = Bundle (<3 libers <1 fiber diameter apart Crocidolite I Ambiguous I ! I 1 C = Cluster (>3 intersections) Anthophyllite i Non-Asbestos i Tremolite M = Matrix Actinolite I Mon-Identified ! NSD = No Structures Detected

CITY_21MC1OO_OO2881317

NYC-WTC_000219581