NYC-WTC_000228961

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume niters): ISOO Lab Group#: 7788 Filter Type / Filter Area: MCE 385 mm-’ Lab Sample #: 5 Grid Opening Size: 0.01124 Client Sample #; 08 Area Examined: 0.04496 mm" GRID BOX: //W Magnification: 20,000 GRID ID: Accelerating Voltage: too KeV # Grid Openings: 4 Analysis Date: 5/18/02

.Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Lengti ID of Stnictjre N or V EDS No (Nona® ! F B M >=05 a >=5tJ Chrys } Amphibole Nonasb Ambts/ND Coord <Sp Eieiwits) i

>■ —?— -4— j

4 i 4 J

Struct = > Q.5p >5:1 Aspect Ratio Grid acceptance; Positive ditfraciion pattern properties conforming to <50% undissoived filte; ovwiapped or folded Totals laboratory Wen^fcaSon odterra observed clO%pariculate coverage >50% coverage ate least 20 unfolded or ovedspped grid squares <5% F B C M EDS spectrum conforming to laborator/ holes or opaque areas identiticatlon crttena observed ChrysoltJe AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle l<3 libers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Actinolite Non-Identified NSD = No Structures Delected !

CITY_21MC1OO_OO29O1974

NYC-WTC_000228961