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- w Lab Sample #: 40 Grid Opening Size: 0.01124

Client Sample #: 40 Area Examined: 0.24728 mnV

GRJD BOX: Magnification: 20,000 GRID ID: 5^4^ 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 A EOS (Nonaab No F B C M •=5|J Chrys Amphibole Nonasb Ambig/ND No Coord <5m Elements) r

7

/2 Y-2-

0 I II 1 LL i ! i i (7 ! ! I 1 I 43 -Jj— 1/ ‘ i If i h___ 4^37 it

Photo Ho. (from 1 in 5 asbestos containing samples) Grid acceptance: Struct = > 0.51J > 5:1 Aspect Ratio <50% undissolved filter, overlapped or tolded Totals Positive diffraction pattern properties conforming to <:0% particulate coverage >50% coverage ate iaborator/ identification criteria observed least 20 unfolded or overlaoped grid scuares <5% F I F I B I C i M , >5u holes or opaque areas L '1= EDS spectrum conforming to laboratory Chrvsotile identification criteria observed AMPHIBOLES Amphibole w F = Single Fiber Amosite Ambiguous ! S = Sundle (<3 fibers <1 liber diameter apart Crocidolite C = Cluster f>3 Intersections) Anthophyllite Non-Asbestos i Tremolite M = Matnx Non-Identified Actinolite NSD = No Structures Detected .1.

CITY_21MC100_003069351

NYC-WTC_000202886