NYC-WTC_000201846

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1840 Lab Group #: 6899 Fitter Type / Filter Area: MCE 385 mm- Lab Sample #: 16 Grid Opening Size: 0.01124 Client Sample #: Area Examined: 0.04496 mm^ GRID BOX: Magnification: 20,000 GRID ID: MAY Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/3/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or r/ EDS No (Nonadb F B G M ■>=05p :>=5p Chrys Amphibole Nonasb Ambig/ND No Coord <5p . Elements)

7

70 —

Ji, k

.Struct = > 0.5(1 > 5:1 .Aspect Ratio Grid acceptance: 7= Positive diffraction pattern properties conforming to . .<50% undissolved filter, overlapped dr foded i Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate

V- EDS spectrum conforming to laboratory least 20 unfolded or overlapped grid souares <5% holes or opaque areas F B e M >5p.

identification criteria observed Chrysotile .AMPHIBOLES 1 Amphibole F = SingleFiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart ■' Crocidolite Ambiguous C-Cluster (>3 Intersections) i Anthophyllite J Non-Asbeatos Tremolite I; 7M = Matrix i i Non-Identified Actinolite ' • NSD - No .Structures Detected

CITY_21MC100_003269271

NYC-WTC_000201846