NYC-WTC_000197029

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1824 Lab Group #: 7000 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 8 Grid Opening Size: 0.01124 Client Sample #: 10 Area Examined: 0.04496 mm'-

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/9/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or N EDS (Nonadb No F B C M >=05 u >=5tJ Chrys Amphibole Nonasb Ambig/ND No Coord <5u Elements)

2- C Z/ Y /A *

1 3 4 1 4 4 4

I !

----- i I 1—r

Struct = > l).5p > 5:1 Aspect Ratio Gna acceptance:

4= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals <10% particulate coverage >50% coverage ate laboratory identification criteria observed least 20 unfolded or overlapped grid squares <5% f F B C M >5u 4= EDS spectrum conforming to laborator/ holes or ooaque areas L identification criteria observed Chrvsotile .AMPHIBOLES Amplubole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthoohyllite Non-Asbestos Tremolite M = Matnx I Non-Identified Actinolite NSD = No Structures Detecteo

CITY_21MC1OO_OO3O44389

NYC-WTC_000197029