NYC-WTC_000201932

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYCBUh Volume /liters): 1840 Lab Group #: 6746 Filter Type / Filter Area: MCE 385 Lab Sample #: Grid Opening Size: 0.01124 Client Sample #: 03 Area Examined: 0,04496

GRID BOX: Magnification: 20.000 GRU) ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 2/20/02 '

Analysis Performed By: MARK PEYSAKHOV .

GO, Structure Structure I ype Length ID of Structure N or 4 EDS No ■ (Nonadb F B C ■=05p ; =5p Chrys Amphibole Nonasb Ambig/ND No Coord <5p Elemenrs)

_ J -A

Struct = > 0.5(1 > 5:1 Aspect Ratio Grid acceptance: 4= Positive d ffraction paftern properties conforming to <50% undisscivsd filter, overlapped or folded Totals laboratory Identification crrteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% i F B I C M >5hJ \= EOS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous' C = Cluster (>3 Intersections) Antfiophyilite Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_003269690

NYC-WTC_000201932