Cover page for TEM results and chain of custody, 110

NYC 9/11 Public Portal Document

I ITEM Asbestos (air) Count Sheet Client Name: I Lab Group #: Airtek 6115 Volume (liters): Filter Type! Filter Area: Grid Opening Size: 1300 MCE 385 mm2 0.01124 Lab Sample #: 23 TiJ Client Sample #: 48 Area Examined: 0.06744 mm2

GRID BOX: , CI Magnification: 20,000

u GRID ID: # Grid Openings: 6 f Accelerating Voltage: Analysis Date: 100 KeV 12/15/01

I Analysis Performed By: j ' ' ( MARK PEYSAKHOV `~

I No GO. Coord Structure No Structure Type F B C Ni >=05. <5p Length >=5p Chrys ID of Structure Amphibole Nor Nonasb Ambig/ND EDS (Nonadb Elements)

L ZZ , z::7

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LI I I Cl Struct = > 0.5i > 5:1 Aspect Ratio 1= Positive diffraction pattern properties conforming to Grid acceptance: <50% undissolved filter, overlapped or folded <10% particulate coverage >50% coverage ate Totals laboratory identification criteria observed least 20 unfolded or overlapped grid squares <5a/o F B C M >5u 'd= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile I AMPHIBOLES Amphibole F = Single Fiber Amosite

I 8 = Bundle (<3 fibers <1 fiber diameter apart C = Cluster (>3 Intersections) Crocidolite Anthophylllte Tremolite Ambiguous Non-Asbestos M =Matrix Actinolite Non-Identified

I NSD = No Structures Detected

NYC-WTC 000098476