NYC-WTC_000220731

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1840 Lab Group fe: 7325 Filter Type / Filter Area: MCE 385 mm- Lab Sample^ Grid Opening Size: 0.01124 Client Sample #: 05 Area Examined: 0 04496 rnm-

GlUD BOX: Magnification: 20,000 GRIDID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 4/4/02

Analysis Performed By; MARK PEYSAKHOV

GO i Structure Structure Type Length ID of structure Nor \ EDS No (Ncnadb F B C M >=05 p >=5m Chrys Amphibole Nonasb AmOig/NO No Coord <5p Elements) i

Jr I —

I

Struct == > 0 5u > 5:1 Aspect Ratio Gnd acceptance: \= Posit ve diftraction pattern p’ooerties conforming to <50% undissoived filter, overlapped or folded Totals laboratory identification criteria obsen/ed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% T it I c M 1 >:p \ = EDS spectrum conforming to laboratory holes or opaque areas identification crtena observed Chrysotile t I AMPHIBOLES p = Single -'ber Amosite Amphibole : 3 3 = Sunale ;<3 hbe-'S <1 fibe' diameter apart Crocidolite Ambmuous 2 = Cluster i>3 intersections Anthophyllite Non-Asbestos Tremolite y Matrix 1 Nou-Identified Actinolite '/S J = No Structures Detected

CITY_2 IMCl 0 Ci_0 00621611 NYC-WTC_000220731