NYC-WTC_000203544

NYC 9/11 Public Portal Document

TEM Asbesfos fair) Count Sheet Client Name: NWC BOE Volume (liters): 1920 Lab Group #: 9089 Filter Type / Filter Area: MCE 385 mm= Lab Sample #: 7 Grid Opening Size: 0.01124 Client Sample #: 07 Area Examined: 0 04496

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

Analysis Performed By: ROMAN PEYSAKHOV

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

/-SO n

Photo No (from 1 in 5 asbestos containing samples) Grid acceptance Struct = > 0 5p _> 5'1 Aspect Ratio <50% undissolved filter, overlapped or folded Totals \'= Positive diffraction pattern properties conforming to <10% particulate coverage >50% coverage ate laboratory identification critena observed least 20 unfolded or ovedapped grid squares <5% F B C M holes or opaque areas v'= EDS spectrum conforming to laboratory Chrysotile identification critena observed I AMPHIBOLES ! Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos M = Matrix Tremolite Actinolite Non-Identified NSD = No Structures Detected

CITY_21MC100_0 03058539

NYC-WTC_000203544