NYC-WTC_000182734

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client Name: NYC BOE Volume (liters); 1968 Lab Group #: 5849 Filter Type / Filter Area: MCE 385 Lab Sample #: 21 Grid Opening Size: 0.01124

Client Sample #: 21 Area Examined; 0.04496

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 11/8/01

Analysis Performed By: MARKPEYSAKHOV

GO. Structure Structure ty pe Length ID of Structure N or V EDS No (Nonadb F B C ~M >=05 p ^5(j Chrys Amphibole Nonasb Ambig/ND No I Coord <5p Elements)

_ z ' < -3 <33

Struct = > 0.5p _> 5:1 Aspect Ratio Grid acceptance: Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratoiy identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M EDS spectrum conforming to laboratory holes or opaque areas identification criteria obsenred Chrysotile [ AMPHIBOLY 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_003100566

NYC-WTC_000182757