TEM air sample results, 125 Liberty St, Oct 2002

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: ATC Volume (Iiters): 3600

• Lab Group #: Lab Sample #: Client Sample #: 9041 14 17 Filter Type / Filter Area: MCE 385 mm2 Grid Opening Size: 0.01124 Area Examined: 0.24728 mm2

GRID BOX: /617S-' Magnification: 20,000 GRID ID: 7 C6-" Accelerating Voltage: 100 KeV # Grid Openings: 22 Analysis Date: 10/30/02

Analysis Performed By: Ri7 ' ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or EDS (Nonadb No F B C M >"05 i. >=tip CttryS Amphibole Nonasb Ambig/N0 No Coord <5~ Elements)

( r .Ff

V

2 V

• ((—/z. '( P— 3- 1 to ___ ___ ___ ___ ___ ___ ___

5^ 7 z. td V t K Z 7- 7~ /S' z 1-z( ZZ_

of ✓ 2t 2Z:_ '3

____ ___ Ud2w&- --_s ___ ___I___

A ro No. rfrnm I in 5 asbestos conta(nina samo es awuIawI.v. Struct = > 0,5N > 5:1 Aspect Ratio <50% undissolved filter, 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 3 C M >5u holes or opaque areas v= IDS spectrum conforming to laboratory Chrysotile jy identification criteria observed AMPHIBOLES Amphibole I F = Single Fiber Amosite Ambiguous I B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite C = Cluster (>3 Intersections) M= Matrix Anthophyliite Tremoiite Actinolite Non-Asbestos

Non-IdentifiedL t i - t - i - _____

NSD = No Structures Detected

NYC-WTC 000131510