NYC-WTC_000225046

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1928 Lab Group #: 7149 rTlte^TypeJ-FTltcivAj^e^ MCE 385 mm’ Lab Sample #: 21 Grid Opening Size: 0.01124 Client Sample #: 21 Area Examined: 0.04496 mm^

GRID BOX: Magnification: 20,000 GRID ID: 2^ Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/20/02

Analysis Performed By; ROMAN PEYSAKHOV

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

77^ cc

2^------ ■ i

Struct = >0.5p >5:1 Aspect Ratio Grid acceptance: ■]= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% partculate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5p 'J = EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle t<3 fibers <1 fiber diameter apart Crocidolite Ambiguous ■ C = Cluster(>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_002920925

NYC-WTC_000225046