NYC-WTC_000227142

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1816 Lab Group #: 6932 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 4 Grid Opening Size: 0.01124

Client Sample 06 Area Examined: 0.04496 mm-

GRID BOX: GRID ID: # Grid Openings: 4 as MaHnification: Accelerating Voltage: Analysis Date: 20,000 too KeV 3/4/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or v EDS No (Nonadb : F B C M >=05 u i>=5p Chrys AmphiDole Nonasb Ambig/ND No Coord <5|J Elements) ■

------- 1 ----------- 1

A

Struct - >O.5p >5:1 Aspect Ratio Grid accepiance:

>/= Positive diffraction pattern properties conforming to <50% undissolved inter, overlapped or lolded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% i' B c i M ; >5p \’= EDS spectrum conforming to laboratory holes or opaque areas i. identilication criteria observed Chrysotile j ■AMPHIBOLES Amphibole i F = Single Fiber Amosite B = Bundle (<3 fibers <1 liber diameter apart Crocidolite .AmbigLioLis

C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Actinolite Non-ldentitied NSD = No Structures Detected

CITY_21MC1OO_OO2898375

NYC-WTC_000227142