NYC-WTC_000207897

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name NYC BOE Volume filters) 1944 Lab Group # 8730 Filter T5 pe / Filter Area MCE 385 mm Lab Sample # 7 Gnd Opening Size 001124 Client Sample # 07 Area Examined 0 04496 mm^

GRID BOX Magnification 20 000 GRID ID Accelerating Voltage too KeV # Grid Openings 4 Analysis Date 8/22/02

Analysis Performed By ROMAN PEYSAKHOV

GO Structure Structure Type Length ID of Structure N or EDS No (Nonadb F B C M ’oEp >=5pi Chrys Amphibole Nonasb Ambig/ND <5u Elements)

zIL (I

Struct = >0 5p >5 I Aspect Ratio Grid acceptance V Positive diffraction pattern properties conforming to <50 / 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 >5u EDS spectrum conforming to laboratory holes or opaque areas identification critena 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 Matra Non Identified Actinolite NSD No Structures Detected

CITY_21MC100_0 03016999

NYC-WTC_000207897