Cover page for TEM results and chain of custody, 110

NYC 9/11 Public Portal Document

I TEM Asbestos (air) Count Sheet

I Client Name: Lab Group #: Lab Sample #: Airtek 6120 19 Volume (liters): Filter Type / Filter Area: Grid Opening Size: 1300 MCE 385 mm 2 0.01124

I Client Sample #: GRID BOX: ~6'•~ 34 Area Examined: Magnification: 0.06744 mm'

20,000 r GRID ID: ? fn # Grid Openings: 6 Accelerating Voltage: Analysis Date: 100 KeV 12/16/01

1 Analysis Performed By: ROMAN PEYSAKHOV

I No GO. Coord Structure No Structure Type F B C I M >=05 u c5N Length >=5i Chrys ID of Structure Amphibole Nonasb Nor AmbigiND EDS (Nonadb Elements)

1P2- i ir :.Z t(

[1 I I I I I ___ -H - ________ I Struct => 0.5µ > 5:1 Aspect Ratio 4= Positive diffraction pattern properties conforming to Grid acceptance: <50% <10% undissolved filter, overlapped or folded particulate coverage >50% coverage ate Totals laboratory identification criteria observed least 20 unfolded or overlapped grid squares c5% F B C M >5ti

I '4= EDS spectrum conforming to laboratory identification criteria observed holes or opaque areas

AMPHIBOLES Chrysotile Amphibole F = Single Fiber Amosite Ambiguous B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Anthophyllite Non-Asbestos C = Cluster (>3 Intersections) Tremolite M =Matrix Actinolite Non-Identified

I NSD = No Structures Detected

NYC-WTC 000098502