NYC-WTC_000212398

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1928 Lab Ciroup #: 7344 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 6 Grid Opening Size: 0.01124 Client Sample #: 06 Area Examined: 0.04496 mm^

CiRID BOX: Magnification: 20,000 CiRID ID: Accelerating Voltage: too KeV # Grid Openings: 4 Analysis Date: 4/6Z02

_Analy«iis Performed By: MARK PEYSAKHOV

GO. I Structure Structure Type Length ID of Structure Nor v EDS (Nonadb I No F B C M >=05 M >=5|J Chrys Amphibole Nonasb Ambig/NO I'io Coord i <5p Elements)

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Struct = > 0.5u > 5:1 Aspect Ratio Grid acceptance: 'I: 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 C M >5u 'I- EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Cluysotile AMPHIBOLES Amphibole F = Single Fiber Amosite El = Sundie (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous c: = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Mairix Actinolite Non-Identified MSD = ’to Structures Detected

CITY_21MC100_002866388

NYC-WTC_000212398