Asbestos TEM analysis data sheet, June 2002

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1800 Lab Group #: 8108 Filter Type / Filter Area: MCE 385 Lab Sample tf: 1 Grid Opening Size: 0.01124 Client Sample #: 03 Area Examined; 0.04496 GRID BOX: Magnification: 20 000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 6/15/02

Analysis Performed By: MARK PEYSAKHOV

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

C- ------- .7

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

CONFIDENTIAL subject C t protective OROER «>. T, 00J0346154, NYC-WTC_OOO179735