TEM Asbestos air sample results, NYC BOE, June 2002

NYC 9/11 Public Portal Document

TEM Am tos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #: 8240 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 15 Grid Opening Size: 0.01124

Client Sample #: 15 Area Examined: 0.04496 mm-

GRID BOX: Maenification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 6/23/02

Analysis Performed Bv : ----- ■ tlCPEYSAKHOV

GO. Structure Structure Type ngth ID of Structure Norv EDS No Amphibole Nonasb (Nonadb F B C M >=5p Chrys Ambig/ND No Coord Elements)

a

t T

I

Struct = > 0.5|j >5:1 Aspect Ratio GriC ac- Positive diffraction pattern properties conforming to <5C't. 1: Iler, overlapped or folded Totals laboratory identification criteria observed <101;.:;. verage >50% coverage ate leas: 39 ■. : . overlapped grid Squares <5% F B C M >5p ^/= EDS spectrum conforming to laboratory holts u' as identification criteria observed Chrysotile AM :s ■ Amphibole F = Single Fiber B = Bundle (<3 fibers <1 fiber diameter apart Ambiguous C = Cluster (>3 Intersections) ..i:e Non-Asbestos M = Matrix Non-Identified NSD = No Structures Detected

CITY_21MC1OO_OO31O5929

NYC-WTC_000185025