NYC-WTC_000219578

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume filters): 1824 Lab Group #: 6989 Filter Type / Filter Area: MCE 385 mm-' Lab Sample #: 4 Grid Opening Size: 0.01124

Clicnt Sample #: 06 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 GRIDID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/9/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or V | EDS No Ambig/ND ! F B C M >=Q5m >=5p Chrys Amphibole | Nonasb ! Elements) No Coorrd <5p

-A

—

Struct = > 0.5n ? 5:1 Aspect Ratio Gnd acceptance:

Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals <10% parficulale coverage >50% coverage ate laboratory identification criteria observed least 20 unfolded or overiapped grid squares <5% [ I F 1 B I C I M I y = EDS spectrum conforming to laboratory holes or opaque areas i. identification critena obseived C hrysotUT^ AMPHIBOLE.S Amphibole j F = Single Fiber Amosite ! AinbigiKHis B = Bundle (<3 libers <1 fiber diameter apart Crocirdohte C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos i Tremolite M = Matrix \on-l(ientit'ied Actinolite NSD = No Structures Detected

CITY_21MC100_002881314

NYC-WTC_000219578