NYC-WTC_000202248

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BQE 1 Volume (liters): 1952 Lab Group #: 6310 Filter Type / Filter Area: ; MCE ' 385 mnE Lab Sample #: 1 Grid Opening Size: 0.01124 Client Sample #: 01 Area Examined: 0.04496 mm" GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: .1/12/02

Analysis Performed By; MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Strucrure N or V EDS No (Nonadb F B C M >=05 p 1 ;>=5p Chrys Amphibole Nonasb Ambig/ND No Coord <5p Elements)

Y <3^

Struct- > 0.5pt > 5:1 Aspect Ratio Grid acceptance: ^-Positive diffraction pattern properties conforming to undissolved filter, overlapped or folded. Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate

4= EDS spectrum Gonforming to laboratory least 20 unfolded or overtapped grid squares <5% F B C j M >5p holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES ' Amphibole F — Single Fiber i i Amosite B = Bundle (<3 fibers <1 fiber diameter apart i Crocidolite Ambiguous C = Cluster (>3 intersections) i i Anthophyllite Non-Asbestos j Tremolite M -Matrix; Non-Identified i Actinolite NSD = No Structures Detected

CITY_21MC100_003271193

NYC-WTC_000202248