NYC-WTC_000207905

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name NYC BOE Volume (liters) 1920 Lab Group # 8730 Filter Type / Filter Area MCE 385 mm Lab Sample # 17 Grid Opening Size 001 124 Client Sample # 17 Area Examined 0 04496 mm CRIP BOX Magnitication 20 000 CRIP ID Accelerating Voltage 100 KeV # Gnd Openings 4 Analysis Date 8/22/02

Analysis Performed By ROMAN PEYSAKHOV

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

Wig fl 11

Struct = > 0 5n >51 Aspect Ratio Gnd acceptance •/ Positive diffracbon pattern properties conforming to / undissolved filter overlapped or folded Totals laboratory identification critena observed <10/ particulate coverage >50 / coverage ate least 20 unfolded or overlapped gnd squares <5 / F B C M >5m V EDS spectrum conforming to laboratory holes or opaque areas identification cntena observed Chrysotile AMPHIBOLES Amphibole F Single Fiber Amosite B Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C Cluster (>3 Intersections) Anthophyllite Non Asbestos Tremolite M Matrix Non Identified Actinolite NSD No Structures Delected

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NYC-WTC_000207905