NYC-WTC_000214441

NYC 9/11 Public Portal Document

TEM Asbestos (air) ( ount Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #: 7855 r ter Type / Filter Area: MCE 385 mm^ Lab Sample #: 14 Grid Opening Size: 0.01124

Client Sample #: 14 Area Examined: 0.04496 mm^

GRIP BOX. Magnification: 20,000 GRIP ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Pate: 5/25/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure Norv EDS No (Noriadb F B C M >=05 M >=5p . 3 Amphibole Nonasb Ambig/ND No Coord <5|J Elements)

Z C?

Struct = >0.5p >5:1 Aspect Ratio Grid acceptance: >/= Positive diffraction pattern properties conforming to *50% undissolved filter, overlapped :r Ulde: Totals laboratory identification criteria observed <10% particulate coverage >50% co .'e least 20 unfolded or overlapped grid . .jj-- <5% F B C M >5u '/= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 libers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite NSD = No Structures Delected

CITY_21MC100_000462807 NYC-WTC_0002 14441