TEM air sample results, 125 Liberty St, Oct 2002

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: ATC Volume (liters): 3600 Lab Group #: 9035 Filter Type / Filter Area: MCE 385 mm= Lab Sample #: 39 Grid Opening Size: 0.01124 Client Sample #: 39 Area Examined: 0.24728 mm2

GRID BOX: /V 7~/ Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 22 Analysis Date: 10/29/02

Analysis Performed By: lqp ROMAN PEYSAKHOV

GO. Structure Structure Type Length lD of Structure N or EDS No F B C M >--055 N >=5p Chrys Amphibole Nonasb Ambig/ND (Nonadb No Coord < N Elemen)ts

b Y

Z .1

• r

r RZ 5 - 6 t Z

l j r if

i l i I l i A oto o. rom m 5 asses os con ining sampled Grid acceptance: Struct = > 0.5p .> 5:1 Aspect Ratio <50% undissolved filter, overlapped or folded Totals v = Positive diffraction pattern properties conforming to <10% particulate coverage >50% coverage ate laboratory identification criteria observed least 20 unfolded or overlapped grid squares <5% F iBI C MI >5N holes or opaque areas v= EDS spectrum conforming to laboratory Chrysotile j identification criteria observed AMPHIBOLES Amphibole F = Single Fiber Amosite 8 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos i Tremoilte M = Matrix Actinolite Von-Identified I i NSD = No Structures Detected

NYC-WTC 000131576