Cover page for TEM results and chain of custody, 110

NYC 9/11 Public Portal Document

TENT Asbestos (air) Count Sheet Client Name: Airtek Volume (litersl: 1310 I Lab Group #: Lab Sample #: 6149 8 Filter Type I Filter Area: MCE 385 mm= Grid Opening Size: 0.01124

Li Client Sample #: GRID BOX: 013 Area Examined: Magnfication: i 0,000 0.06744 mm'

GRID ID: Accelerating Voltage: 100 KeV I #'Grid Openings: 6 Analysis Date: 12/19/01

I Analysis Performed By: p ROMAN PEYSAKHOV

I No GO. Coord Structure No Structure Type I F 1B C M >'05 u <5u Length >=5p I Chrys ID of Structure N or Amphibole Nonasb Ambig/ND EDS (Nonadb Elements)

I I I I I I I Struct => 0.5 µ > 5:1 Aspect Ratio Grid acceptance: d= Positive diffraction pattern properties conforming to <50% laboratory identification criteria observed undissolved filter, overlapped or folded <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% Totals

F B C M >5N

I '1= EDS spectrum conforming to laboratory identification criteria observed

F = Single Fiber holes or opaque areas

AMPHIBOLES Chrysodle Amphibole Amosite Ambiguous I B = Bundle (<3 fibers <1 fiber diameter apart C = Cluster (>3 Intersections) M =Matrix Crocidolite Anthophyllite Tremolite Actinolite Non-Asbestos Non-Identified NSD = No Structures Detected __ .- -__ .._

1 NYC-WTC 000098536