NYC-WTC_000190254

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters). 1808 Lab Group #: 6854 Fiiter Tvpe / Filter Area: MCE 385 mm- Lab Sample #: 15 Grid Opening Size- 001124 Client Sample #: 17 Area Examined: 0 04496 mm-

GRID BOX: ^7 Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 2/27/02

Analysis Performed By: MARK PEYSAKHOV

GO Structure Structure Type Length ID of Structure N oi EDS I'Nonadb No F B C M i ■=5p Chrys Amphibole Nonasb Ambig/NC No Cooid <5 pi EleiTients)

A 27 S

4-

Stiuct = > 0 op >5 1 Aspect Ratio Grid acceptance

7= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% oarticulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M j >5p 7= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster '>3 Intersections) Anthophyllite Non-Asbesios Tremolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_003088922

NYC-WTC_000190254