TEM Asbestos air sample results, NYC BOE, Dec 2001

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: m'C BOE Volume (liters): 1936 Lab Group #: 6126 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: Grid Opening Size: 0.01124

Client Sample #: 5 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20.000 GRIDED: Accelerating Voltage: 100 KeV # Grid Openings: 4 ■Analysis Date: 12/18/01

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or N EDS No (Nonadb F B C M >=05 p >=5|j Chrys Amphibole Nonasb Ambig/NC No Coord <5u Elements)

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1 Struct = > 0.5p ■> 5:1 Aspect Ratio Srid acceptance: V= Positive diffraction pattern properties conforming to <50% undissolvBd 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 I C >5u 9= EDS spectrum conforming to laboratory holes or opaque areas M Identification criteria 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 T remolite M = Matnx Actinolite Non-Identified NSD = No Structures Detected

CITY_21MC100_003104871

NYC-WTC_000184262