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): 1300 I Lab Group #: 6115 Filter Type / Filter Area: MCE 385 mm2 Grid Opening Size: 0.01124

LI Lab Sample #: Client Sample #: GRID BOX: 9 09 Area Examined: Magnification: 20,000 0.06744 mm'

I GRID ID: # Grid Openings: 6 574 Accelerating Voltage: 100 KeV Analysis Date: 12/15/01

I Analysis Performed By: MARK PEYSAKHOV

Li GO. Coord Structure I Structure Type No F B C M >=05 N <~N Length >=5p Chrys ID of Structure Amphibole Nor Ni Nonasb AmbigrND EDS (Nonadb Elements) No

r ~ I4' J •- G~ 1 Z y .

G.

I El

El 'El

I I Struct = > 0.Sµ > 5:1 Aspect Ratio /= Positive diffraction pattern properties conforming to Grid acceptance: <5O% undissolved filter, overlapped or folded <10% particulate coverage >50% coverage ate Totals laboratory identification aiteriobserved least 20 unfolded or overlapped grid squares <5% F B C M >5u

I 'I= EDS spectrum conforming to laboratory identification criteria observed holes or opaque areas

AMPHIBOLES Chrysotile Amphibole F =Single Fiber 0 Amosite !

I B = Bundle (<3 fibers <1 fiber diameter apart C = Cluster (>3 Intersections) Crocidolite Anthophyllite i Tremolite Ambiguous Non-Asbestos Non-Identified] M= Actinolite

I NSD = No Structures Detected

NYC-WTC 000098462