TEM Asbestos air sample results, NYC BOE, Mar 2002

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1824 Lab GrouD #: 7184 Filter Type / Filter Area: MCE 385 mm" Lab Sample #: 2 Grid Opening Size: 0.01124

Client Sample #: 05 Area Examined: 0.04496 mm"

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: too KeV # Grid Openings: 4 Analysis Date: 3/23/02

Analysis Performed By: ROMAN PEYSAKHOV

GO, Structure Structure Type Length ID of Structure N or N EDS (Nonadb No F B C M >=05 u >=5u Chrys Amphibole Nonasb Ambig/ND No Coord <5u Elements)

Pf

4F

U. 1 I

Struct = > 0.5p >5:1 Aspect Ratio Grid acceptance:

/= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals <10% particulate coverage >50% coverage ate laboratory identification criteria observed least 20 unfolded or overlapped grid squares <5% ; F I B C M I >5m v = cDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Buncle ;<3 fibers <1 fiber diameter apart Crocidolite Ambiguous I C = Cluster (>3 Intersections) Anthophyllite Tremolite Non-Asbestos I—r M = Matrix Non-Identified : Actinolite NSD = No Structures Detected

CITY_21MC1OO_OO31O2753

NYC-WTC_000183526