NYC-WTC_000191943

NYC 9/11 Public Portal Document

TEM Asr stos (air) Count Sheet ClientNam^ NYC BOE Volume (liters): 1920 Lab Group #: 8240 Filter Type / Filter Area: MCE 385 mm" Lab Sample #: 13 Grid Opening Size: 0.01124

Client Sample #: 13 Area Examined: 0.04496 mm^

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: too KeV # Grid Openings: 4 Analysis Date: 6/23/02

Analysis Performed By: makkpeysakhov

GO. Structure Structure Ty De Length ID of structure N oi V EDS (Nonadb No F B C "m >=05 |J >=5p ' • Chrys Amphibole Nonasb Ambig/ND No Coord Elements) <5|.

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Struct = > 0.5p >5:1 Aspect Ratio Grid accepi r ■ .: =/= Positive diffraction pattern properties conforming to <50% I in ri filter, overlapped or folded Totals laboratory identification criteria observed <10% panr; : • coverage >50% coverage ate least 20 un: : i' t or overlapped grid squares <5% F B C M >5p EDS spectrum conforming to laboratory holes orc,.loas identification criteria observed Chrysotile . AMPII;!.: .I..ES ‘ Amphibole F = Single Fiber Aii.'-n.ie B = Bundle (<3 fibers <1 fiber diameter apart Crc..... i.ie Ambiguous C = Cluster (>3 Intersections) Ant' , rile Non-Asbestos Tr. ■ ' 'n M = Matrix Non-Identified NSD = No Structures Detected

CITY_21MC100_003091983

NYC-WTC_000191943