NYC-WTC_000200915

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1805 Lab Group #: 7739 Filter Type 7 Filter Area: MCE 385 mm^ Lab Sample #: 13 Grid Opening Size: 0.01124 ''Client Sample #: 13 Area Examined: 0,04496 mm- GRID BOX: Magnification: 20,000 GRIDID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 5714/02

> Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or 7 EDS ' No (Nonadb F B C M >=0E M .Chrys Amph'tole, Nonasb Ambig/ND Elemenis) "No Coord <5p

J O" F-x-

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' Struct = > G;5fr > 5; 1 Aspect Ratio Grid acceptance: ' ■ ' 7= Positive diffraction'pattern properties conforming to <50% undissolved filter, overlapped orfolded Totals iaborator/ identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overiapped grid squares <5% 'B C M >5u ' 7= EDS'spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile ' amphiboles ; Amphibole F = Single Fiber Amosite B = Bundle {<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite NSD = Mo Structures Detected

CITY_21MC1OO_O112'7 52 56

NYC-WTC_000200927