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 #: 2 Grid Opening Size: 0.01124

Client Sample #: 05 Area Examined: 0.24728 mm2

GRID BOX: Magnification: 20,000 ____ 7

GRID ID: 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 No F 8 C M ' 05 u >=5p Chrys Amphibole Nonasb AmbiglND (Nonadb No: Co rd <5N Elements)

24 /;

--7 2 5 Z v r J` r

r V Z 2Z 5 .- Z k✓

1 3(9 -3 f ' 1 3335 G- 7-4t ,S"'

1

5.

Phntn Nn ,1mm 1 in 5 as es ns con mma samo es '. u awoNwuw. Struct = > 0.5p > 5:1 Aspect Ratio <50% undissolved filter, overlapped or folded Totals J= 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 '51.1 holes or opaque areas v= EDS spectrum conforming to laboratory Chrysotile identification criteria observed AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M =Matrix Non-Identified NSD = No Structures Detected Actinolite 1

NYC-WTC 000131498