Cover page for TEM results and chain of custody, 110

NYC 9/11 Public Portal Document

I TEM Asbestos (air) Court Sweet Client Name: Airtek Volume (liters): 1300 I Lab Group #: Lab Sample #: 6149 12 Filter Type / Filter Area: MCE 385 mm= Grid Opening Size: 0.01124

I Client Sample #: GRID BOX: 022 Area Examined: Magnification: 20,000 0.06744 mm-'

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

I Analysis Performed By: ROMAN PEYSAKHOV

Structure Structure Type Length ID of Structure Nor EDS GO, (Nonadb n

No F B C M >05 u >=5N Chrys Amphibole Nonasb AmbigIND Elements) No Coord <5N

1

z.1 C' q

I I I I I I _____1 - 1- I______________ Struct => 0.5µ > 5:1 Aspect Ratio Grid acceptance: filter, overlapped or folded Totals 4= Positive diffraction pattern properties conforming to <50% undissolved particulate coverage >50% coverage ate laboratory identification criteria observed <10% least 20 unfolded or overlapped grid squares <5% F B C M1 ' 5 d= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole i F = Single Fiber Am ite Ambiguous I B = Bundle (<3 fibers <1 fiber diameter apart C= Cluster M =Matrix (>3 Intersections) _ Crocidolite Anthophyllite Tremolite Actinolite Non-Asbestos Non-Identified NSD = No Structures Detected __ -_--

NYC-WTC 000098540