Cover page for TEM results and chain of custody, 110

NYC 9/11 Public Portal Document

TEM asbestos (air) Count Sheet Client Name: Airtek Volume (liters): 1250 Lab Group #: 6141 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 4 Grid Opening Size: 0.01124 Client Sample #: 004 Area Examined: 0.06744 mm' GRID BOX: '7 Magnification: 20,000 GRID ID; /(9(2_... Accelerating Voltage: 100 KeV # Grid Openings: 6 Analysis Date: 12/18/01

Analysis Performed By: ROMAN PEYSAKHOV

I No GO.

Coord Structure No Structure Type F B C M ><5~µ Length >=5N Chrys ID of Structure Amphibole p Nonasb Nor Ambi9/ND EDS (Nonadb Elements)

1s 2-

Y l

1 t LI

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

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

AMPHIBOLES Chrysotile Amphibole

r F = Single Fiber 8 = Bundle (<3 fibers <1 fiber diameter apart C = Cluster (>3 Intersections) M = Matrix NSD = No Structures Detected Amosite Crocidoiite Anthophyllite Tremolite Actinolite Ambiguous Non-Asbestos Non-Identified

NYC-WTC 000098512