NYC-WTC_000217887

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1936 Lab Group #: 6645 Filter Type / Filter Area: MCE 385 mtir Lab Sample #: 5 Grid Opening Size: 0.01124

Client Sample #: 5 Area Examined: 0.04496 mm-

GRIP BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 2/12/02

Analysis Performed By: C MARK PEYSAKHOV

GO. . Structure Structure Type Length ID of Stnjcture N or N EDS No Amphibole Nonaso AmDig/NC (Nonaob I F B C >=05 M >=5)j Chrys No Coord <5m Elements) '

Struct =■ > 0.5n > 5:1 Aspect Ratio Grid acceptance: '/= Positive diffraction pattern properties conforming to <50% undissoked Alter, overlapped or folded Totals lacoratory identiScabcn criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overiapped grid squares <5% F B C M ; >5^ "7= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile i AMPHIBOLES ! Amphibole F = Single Fiber Amosite j i Crocidolite I Ambiguous B = Bundle (<3 Abers <1 Aber diameter apart C = Cluster {>3 Intersections) Anttiophyllite Non-Asbesios T remolite M = Matrix Actinolite Non-ldentified NSD = No Structures Detected

CITY_21MC100_002878017

NYC-WTC_000217887