NYC-WTC_000200529

NYC 9/11 Public Portal Document __ - _________ —

TEM Asbestos (air) Count Sheet Client Name: NYC BOE. Volume filters): 1920 Lab Group #: S123 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 16 Grid Opening Size: 0.01124 Client Sample #: 16 Area Examined: 0.04496 mm^ GRID BOX: Maenification: 20,000 22 GRID ID: 22 2- Accelerating Voltage: TOO KeV # Grid Openings: 4 Analysis Date: 6/15Z02

Analysis Performed By: ROMAN PEYSAKHOV

GO.' - ) Structure Structure Type Length ID of Structure N or V 2 2 EDS ■ "] No, ]■ (Nonadb F B C M >=05 M Chrys Amphibole Nonasb Ambig/ND Elements) No j Coord 1 <5p 4— 7^

Mi

rStruct =7 >0.5g > 5;l Aspect Ratio Grid areeptance: Positive diffraction pattern properties conforming to undissolved filter, overlapped or folded Totals iaborato^ identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M ■6p \= EDS spectrum conforming to iaborato^ - ■ holes or opaque areas identification criteria observed Chrysotile i AMPHIBOLES Amphibole F = Single Fiber Amosite B = Sundie (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster {>3 Intersections] Anthophyllite Non-Asbestos M = Malrix ' Tremolite Actinolite Non-Identified NSD = No Structures Detected

CITY_21MC100_0112'7 49 76

NYC-WTC_000200544