NYC-WTC_000228522

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1920 i Lab Group #: Filter Type / Filter Area; MCE N5 mm’ j Lab Sample#: 2 Grid Opening Size: 0 0’12-

Client Sample #: 04 Area Examined: O.u-i49b mm'

GRID BOX: Magnification: 20 000 GRIDED: ■Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 4,13/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of structure Nor V £25 I (Nonadb j No F B C M >=05 M >=5p Chrys Amphibole Nonasb AmbigrNO No Coord <5m Elements)

. Z

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Struct = > 0.5g >5:1 Aspect Ratio Grid acceptance: V= Positive diffraction pattern properties conforming to <50% undissolved filler, overlapped or folded Totals laboratory idenSfioaton criteria observed <10% paniculate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5p EOS spectrum confonning to laboratory holes or opaque areas identilication criteria observed Chrysotile ! AMPHIBOLES Amphibole F = Single Rber Amosite 8 = Bundle (<3 fibers <1 fiber diametar apart Crocidolite Ambiguous C = Cluster (>3 Intersections) : Anthophyllite , Non-Asbestos Tremolite M = Malrix Actinolite Non-Identified NSD = No Structures Detected

CITY_21MC100_002900868

NYC-WTC_000228522