NYC-WTC_000201879

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1840 Lab Group #: 6564 - Filter Type / Filter Area: MCE 385 miY Lab Sample #: 6 Grid Opening Size: 0.01124 Client Sample #: 06 Area Examined: 0.04496 min-

GRID BOX: Magnification: 20,000 GRIDID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 2/5/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of structure N or N EDS (Nonadb No F B C M >=05 p : =5iJ Chrys Amphibole Norasb Ambig/ND No Coord <5p Elements)

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Struct = > 0.511 _> 5:1 Aspect Ratio Grid acceptance: Fositive ciffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals <10% particulate coverage >50% coverage ate laborator/ identification criteria observed least 20 unfolded or overlapped grid squares <5% F B C M >5u 4- EDS spectrum conforming io laboratory holes or opaque areas identification criteria observec Chrysotile AMPHIBOLES ! Amphibole F = Single Fleer Amosite B = Bundle (<3 ticers <1 fiber diameter apart Crocidolite Ambiguous C = Clusier (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Actinolite Non-Identified WSD = No Structures Detected

CITY_21MC100_003269366

NYC-WTC_000201879