NYC-WTC_000228758

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1800 Lab Group tf; 7636 Filter Type / Filter Area: MCE 385 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: 5/4/02

Analysis Performed By: 10^ ROMAN PEYSAKHOV

GO. Structure Structure Type Length IO of Strursure Norv EDS No (Monadb F S C IW >=05 p ““T >=5p Chrys Amptiiboe Nonasb AnWNO No Coord <Sp Efejnents)

1 £ A

45

Struct = > O.Sp >5:1 Aspect Ratio Grid acceptance: ' Positive diitraction pattern uroperties conforming to urxlissolved filter, avsrl^^ or lotded Totals laboratory idantificatian criteria observed <10% pardcutate average >50% coverage ate least 20 unfolded or overtopped grid squares <5% F B C M >5u 'J- EDS spectrem conforming to laboratory holes or opaque areas jdsniifcafen criteria observed Chrysotile amphiboles Amphibole F = Single Fiber Amosite 8 = Bundle (<5 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite W = Matrix Non-Ideatified Actinolite NSD = No Structures Detected

CITY_21MC1OO_OO29O1635

NYC-WTC_000228758