NYC-WTC_000226400

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1840 Lab Group #: 6465 Filter Type / Filter Area: MCE 385 mm- Lab Sample tf: 8 Grid Opening Size: 0.01124 Client Sample #: 08 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 1/27/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure Nor/ EDS No >=05 u Amphibole Nonasb (Nonadb B C M Chrys Ambig/ND Elements) No 'Coord ' <5p

a.

I

zz=zz= ■j—4

I 1 I

~ ~ j j J ~"i Struct = > (I.?Li =-5:1 Aspect Ratio Grid acceptance:

■/= Positive diffraction pattern properties conforming to <50% undissolved lilter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded o' overlapped grid squares <5% F B i C M >5p 4= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite 5 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>5 intersections) Anthophyllite Non-Asbestos M = Matrix Tremolite Actinolite Non-Identified NSD = No Structures Detected

CITY_21MC100_002922419

NYC-WTC_000226400