NYC-WTC_000201659

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #: 7567 Filter Type / Filter Area: MCE 385 Lab Sample #: 1 Grid Opening Size: 0.01124

Client Sample #: 01 Area Examined: 0.04496'

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 4/29/02

Analysis Performed By: MARKPEYSAKHOV

■ GO. Structure Structure Type Length ID of structure N or EDS No (Nonadb F B C (J I >=5U Chrys AmphiDole Nonasb Ambig/ND Elements) No. Coord <5u

g: IZD ’'SZSZ iXi a>-

-1

Struct = > 0.5n -> 5:1 Aspect Ratio Grid acceptance: -/ = Positive diffraction pattern properties conforming to undissoived filter, overlapped or folded Totals laboratory Identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overiapped grid squares <5% F B C M i 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-Asbestos M = Matrix ! Tremolite Actinolite Non-Ideiitified NSD = No Structures Detected

CITY_21MC1OO_O1127576O

NYC-WTC_000201659