NYC-WTC_000203474

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1936 Lab Group #: 9090 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 5 Grid Opening Size: 0.01124

Client Sample #: 07 Area Examined: 0 04496 mm^

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 11/11/02

Analysis Performed By: ROMAN PEYSAKHOV

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

1 05 OS if /SO

Photo No (from 1 in 5 asbestos containing samples) Gnd acceptance Struct = > 0 5m > 5 1 Aspect Ratio undissolved filter, overiapped or folded Totals V = Positive diffraction pattern properties conforming to <10% particulate coverage >50% coverage ate laboratory identification critena observed least 20 unfolded or overlapped gnd squares <5% F B C M >5u holes or opaque areas '/= EDS soectrum conforming to laboratory Chrysotile identification cntena observed : AMPHIBOLES ! Amphibole F = Single Fiber Amosite I B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matnx NSD = No Structures Detected Actinolite Non-Identified ±.

CITY_21MC100_003058144

NYC-WTC_000203474