Cover page for TEM results and chain of custody, 110

NYC 9/11 Public Portal Document

I TEM Asbestos (air) Count Sheet Client Name: Airtek Volume (liters): 1250 I Lab Group #: 6141 Filter Type / Filter Area: MCE 385 mm=

I Lab Sample #: 8 Grid Opening Size: 0.01124 Client Sample #: 013 Area Examined: 0.06744 mm2 GRID BOX: i 7 Magnification: 20,000

I GRID ID: # Grid Openings: 6 Accelerating Voltage: Analysis Date: 100 KeV 12/18/01

Analysis Performed By: U ROMAN PEYSAKHOV -

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

z7'- -

Pz z

11

I R [7 I I atruct = > u.~µ > >: I Aspect Ratio Grid acceptance: 'J= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% Totals

1= EDS spectrum conforming to laboratory holes or opaque areas F B C M >51.i identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite 8 = Bundle (<3 fibers <1 fiber diameter apart ! Ambiguous I C = Cluster (>3 Intersections) M = Matrix Crocidolite Anthophyllite Tremolite Non-Asbestos Actinolite Non-Identified

I NSD = No Structures Detected

NYC-WTC 000098516