NYC-WTC_000191020

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #: 7654 Filter Type / Filter Area: MCE 385 mnr Lab Sample #: 2 Grid Opening Size: 0.01124 Client Sample #: 2 Area Examined: 0.04496 mm" GRIP BOX: Magnification: 20,000 GRIP ID; Accelerating Voltage: 100 K.eV # Grid Openings: 4 AnalydsPate: 5/6/02

Analysis Performed By: ( y* ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or V EDS (Nonadb No F B C M >=05 p >=5|J Chrys Amphibole Nonasb Ambig/ND . No Coord <5p Elements)

2 t> 6k? a

Struct = > 0.5p >5:1 Aspect Ratio Grid acceptance: Positive diffracbon pattern properties conforming to ^^0% unMed filter^ovejtepp^orfo^^^^^ Totals laboratory identification criteria observed least 20 unfolded or overlapped grid squares <5% F B C M >5|j EDS 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) Anthophyllite Non-Asbestos T remolite M = Matrix Actinolite Non-Identified NSD = No Structures Detected

CITY_21MC100_003090148

NYC-WTC_000191020