NYC-WTC_000202847

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: ATC Volume (liters): 3600 Lab Group #: 9035 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 25 Grid Opening Size: 0.01124

Client Sample #: 25 Area Examined: 0.24728 mm^

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 22 Analysis Date: 10/29/02

Analysis Performed By: ROMAN PEYSAKHOV

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

> H/ 7

lit y 22 /Z jQ 4

a ir XZ_ 3 p'Z IL// I I T I I J I Photo NO (from 1 in 5 asbestos containing samples) Grid acceptance; struct = > O' 5 J > 5:1 Aspect Ratio undissolved filter, overtapped or folded Totals 'j = Positive diffraction pattern properties conforming to <10% particulate coverage >50% coverage ate laboratory identification criteria observed leas: 20 unfolded or overlapped grid squares <5% [ F B C M holes or opaque areas EDS spectrum conforming to laboratory Chrysotile .deniification criteria observed .AMPHIBOLES Amphibole j F = Single Fiber Amosite S = Sundle (<3 fibers <1 fiber diameter aoart Crocidolite Ambiguous I 1 = Cluster i>3 Intersections) Anthophyllite I Non-Asbestos ’ Tremolite M = Matrix i Non-Identified I Actinolite NSD = No Structures Detected

CITY_21MC100_003069336

NYC-WTC_000202871