NYC-WTC_000219803

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: Sn'C BOE Volume (liters): 192S Lab Group #: 7250 Filter Type / Filter Area: MCE 385 mni- Lab Sample #: 12 Grid Opening Size: 0.01124

Client Sample #: 15 Area Examined: 0 04496 mm-

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3'28/02

Analysis Performed By; MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure \ or \ EDS INonadt No F B C M >=05 u >=5(J Chrys Amphibole Nonasb i Ambig/NO No Ccord <5p Elements)

■ J?

Struct = > 0 5p >5:1 Aspect Ratio Grid acceptance; y = Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B j C j M I >'= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile 1 i AMPHIBOLES Amphibole F = Single Fiber B = Bundle (<3 fibers <1 fiber diameter apart C = Cluster (>3 Intersections) Amosite Crocidolite Anthophyllite Tremolite Ambiguous Non-Asbestos n I I 1 i ! M = Mairii Actinolite Non ldentified i I 1—r NSD = No Structures Detected

CITY_21MC100_002881690

NYC-WTC_000219803