NYC-WTC_000228913

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE volume (liters): 1800 Lab Group #: 7741 Filter Type / Filter Area: MCE 385 Lab Sample #: 10 Grid Opening Size: 0.01124

'Client Sample #: 12 Area Examined: 0.04496

GRID BOX; Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 5/14/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure Nor v EDS No (Nonadb F B C M >=05 u Chrys Amphibole Nonasb Amttg/'W No Coord <5p Elements)

I

1

Struct = >0.5n >5;I Aspect Ratio Grid acceptance: ■/= Positve diffraction pattern properties conforming to <50% undissolved filler, overlapped or folded Totals laboratory identification criteria observed <10% paniCLlatB coverage >50% coverage ata least 20 unfolded or overlapped grid squares <5% F B C M • -/= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphiboie F = Single Fiber Amosite a = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3lntersectionsf Anthophyllite Non-Asbestos Tremolite M = Matrix Actinolite Non-Identjfied MSD = No SIructures Detected

CITY_21MC100_002901883

NYC-WTC_000228913