NYC-WTC_000228831

NYC 9/11 Public Portal Document

TEM AsbestosJlairl Count Sheet Client Name: NYC BOE Volume (liters): 18S6 Lab Group #: 7684 Filter Type / Filter Area; MCE 385 mm= Lab Sample #: 9 Grid Opening Size: 0.01124

Client Sample #: 11 Area Examined: 0.04496 rrstri'

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 5/9/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or \ EOS No Monasb Amtig/NO (rJonadb F B C M >=05 p :>=5|j Ctirys Amphibole No Coord <5p Elements)

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zd Struct = > 0.5u > 5: t Aspect Ratio Grid acceptance: 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 >5p '/= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHfBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocfdolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite U = Matrix Actinolite Non-ldentified NSD - No Structures Detected

CITY_21MC100_002901762

NYC-WTC_000228831