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 #: 9041 Filter Type / Filter Area: MCE 385 mm2 Lab Sample #: 6 Grid Opening Size: 0.01124 Area Examined: 0.24728 mm2 Client Sample #: 09 GRID BOX: (L( 75 - Magnification: 20,000 GRID ID: L4 1-- Accelerating Voltage: 100 KeV # Grid Openings: 22 Analysis Date: 10/30/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or EDS Ona No F B C M > 05 l' >=5p Chrys Amphibole Nonasb AmbiglND Eemends) No ; Coord <5N

4I • it? Y 3 /~-- r, EJ 7--1 ? J'Z. J x-23 66' Z- Z7- tf ( • B- !?

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-1 . Photh No. tfmm 1 in 5 asbestos containiflo same es Vl,u au }Jw..w. Struct = > 0.5p > 5:1 Aspect Ratio <50% undissolved fitter, overlapped or folded Totals i= 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 B C M >6w holes or opaque areas v = EDS spectrum conforming to laboratory Chrysotile identification criteria observed AMPHIBOLES Amphibole F = Single Fiber Amosite Ambiguous 3 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite C = Cluster (>3 ;ntersections) Anthophyllite Non-Asbestos Trernolite M = Matrix Actinolite Non-Identified J_ .. NSD = No Structures Detected — — ----

NYC-WTC 000131502