NYC-WTC_000201991

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume /liters): 1920 Lab Group #: 7195 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 2 Grid Opening Size: 0.01124 Client Sample #: 02 Area Examined: 0.04496 mm’ GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/24/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type !-ength ID of Structure NorN EDS- (Nonadb No i F t 7 >=05 p ~ >=5ki Chrys Amphibole Nonasb Ambig/ND No Coord <5p Elements)

-J : 1

|.

Struct= > 0.5p > 5:1 Aspect Ratio Gridacceptance: 7- Positive d ffraction pattern properties conforming tc, <50% undissolved filter, overiapped or folded Totals laboratory rdentification criteria ooserved <10% particulate coverage >50% coverage ate • least 20 unfolded or overlapped grid squares <5% F B C M T- EDS spectrum conforming to laboratory holes 01 opaque areas identification criteria observed Chrysotile I AMPHIBOLES f Amphibole F = Single Fiber , : Amosite } B = Eundie (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite | i Non-Asbestos 1 Tremolite i .M = Matrix j • t Non-Identified Actinolite 1 NSD = No Structures Detected

CITY_21MC100_011275955

NYC-WTC_000201991