NYC-WTC_000198843

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count et Client Name: NYC BOE 1 (liters): 1814.5 Lab Group #: 8243 Filter Tvi r Area: MCE 385 Lab Sample #: 14 Gill. igSize: 0.01124 Client Sample #: 14 A/ ' iimined: 0.04496 mm^

GRID BOX: Ication: 20,000 GRID ID: Accel Ci J Voltage: 100 KeV # Grid Openings: 4 is Date: 6/23/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length "Ye N or -7 EDS No (Nonadb F B C M >=05 M >=5p Chrys Ami.: :onasb Ambig/ND Elements) No Coord <5m

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Struct = > 0.5g > 5:1 Aspect Ratio Grid acceptance: ;• 7= Positive diffraction pattern properties conforming to <50% undissolved filter, overiapped 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 7= EOS spectrum conforming to laboratory holes or opaque areas — identification criteria observed : .Ie AMPHIBOLIES : Ie F = Single Fiber Amosite :IS B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite C = Cluster (>3 Intersections) Anthophyllite os Tremolite M = Matrix 3d Actinolite NSD = No Structures Detected

CITY_21MC100_003030636

NYC-WTC_000198843