TEM Asbestos air sample results, NYC BOE, Feb 2002

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: m^C BOE Volume (liters): 1848 Lab Group #: 6585 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: 100 KeV # Grid Openings: 4 .Analysis Date: 2/7/02

Analysis Performed By: ROMAN PEYSAKHOV

GO Structure- Structure Type Length ID of Structure N or N EDS (Nonadb No F B C •=05iJ Chrys Amptiiboie Nonasb Ambig/ND No Coord Elements)

y 0 II

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

9= Positive diffraction pattern properties conforming to <50% undissoived filter, overlapped or folded Totals <10% oarticulate coverage >50% coverage ale laboratory identification criteria observed

EDS spectrum conforming to laboratory least 20 unfolded or overlapped grid squares <5% holes or opaque areas c M >5p

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 = No Structures Detected

CITY_21MC100_003103025

NYC-WTC_000183720