NYC-WTC_000227099

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client .Name: NYC BOE Volume (liters): 1816 Lab Group #: 6885 Filter Type / Filter Area: MCE 385 mm- Lab Sample 7 Grid Opening Size: 0.01 124 Client Sample #: lO ■Area Examined: 0.04496 mm-

GRID BOX: iVlagnification: 20.000 GRID ID: Accelerating Voltage: too KeV # Grid Openings: 4 Analysis Date: 3/2/02

Analysis Performed By: MARK PEYSAKHOV

GO. ) Structure i Structure Type Length ID of Structure N or v EDS ------------------------- 1 (Nonadb No F B C M >=05 u : '=5p Chrys Amphibole Nonasb Ambig/ND No Coord <5m Elemenis)

1------ ------

Struct = >0.5p >5:1 Aspect Ratio Grid acceptance:

v'= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ale least 20 unfolded or overlapped grid squares <5% F I B i C I M >5u EDS spectrum conforming to laboratory holes or opaque areas Identification cntena observed Chrysotile .AMPHIBOLES —1—k Amphibole F = Single Fiber Amosite 0 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbescos Tremolite M = Matrix Non-ldentitied Actinolite IMSO = No Structures Detecteo

CITY_21MC100_002898311

NYC-WTC_000227099