NYC-WTC_000207132

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count S eet Client Name: NYC BOE Vi'.nine (liters): 1920 Lab Group #: 7851 ■ Filter Type i ilter Area; MCE 385 mm^ Lab Sample #: 17 GritLi .lening Size; 0,01124 Client Sample #: 17 Al; .1 Examined: 0.04496 mm^ GRID BOX: y iiification: 20,000 . GRID ID: Acceler.,,3ig Voltage: 100 KeV # Grid Openings: 4 A. : ivsis Date: 5/25/02

^9 Analysis Performed By: MARKPEYSAKHOV

GO. Structure Structure Type Length • IL Structure N or V EDS No; >’05 p (Nonadb F B C M >=5p Chrys Amphib' Nonasb Ambig/NO ; No Coord <5p Elements)

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Struct = > 0.5p > 5:1 Aspect Ratio Grid acceptance: c Positive diffraction pattern properties conforming to ^50% undissolved filter, overlapped or folded '/■/Totals-vWy 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 ! sotile ! AMPHIBOLES ' iibole F = Single Fiber Amosite . B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite ■A i;uous C = Cluster (>3 Intersections) Anthophyllite Noi lestos Tremolite M = Matrix Nci ■ :tified Actinolite NSD = No Structures Detected

CITY_21MC100_003014673

NYC-WTC_000207132