NYC-WTC_000202847

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: ATC Volume (liters): 3800 Lab Group #: 9035 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 11 Grid Opening Size: 0.01124

Client Sample #: 11 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 EOS (Nonadb No F B C M >=05 u >=5|j Ctirys Amphibole Monasb Ambig/NO No Coord Elements) <5m

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----------------------------------------------------- -------- -------- 1-------- ------------------------------ ---------------------------------------- ......................... i _________ I,. . i ■_______________________________ Photo No. sfrom 1 in 5 asbestos coniairirg sampiesi 7 Gnd acceptance: struct = > 0.5p > 5:1 Aspect Ratio undissolved filter, overlapped or folded Totals \ = Positive diffraction pattern oroperfies conforming to <10% particulate coverage >50% coverage ate laboratory identification criteria observed least 20 unfolded or overlapped grid squares <5% / C i M i >5u holes or opaque areas L EOS spectrum conforming to laooratory Chrysotile | laentification criteria observed AMPHIBOLES Amphibole ! F = Single Fiber Amosite i ! 8 = Bundle (<3 fibers <1 liber diameter apart Crocidolite Ambiguous C = Clusier(>3 Intersections) Anthophyllite I Non-Asbestos I Tremolite M = Matrix Actinolite I Non-Identified NSD = No Structures Detected ,_____ _ ___ _________ 1

CITY_21MC100_003069322

NYC-WTC_000202857