NYC-WTC_000226756

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): ! 840 Lab Group #: 6832 Filter Tvpe / Filter .Area: MCE mm- Lab Sample #: 6 Grid Opening Size: O.M 12.

Client Sample #: 06 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 2/26/02

Aiialysis Performed By: ROMAN PEYSAKHOV

GO Structure Structure Type Length I ID of Structure N or EDS No (Nonadb ‘ F B C M '=5p Chrys Amphibole Nonasb Ambig/ND No . Coord <5p Elements) I

/A/ r ^-7

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Struct = > 0.5p > 5:1 Aspect Ratio Grid acceptance:

9= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals <10% particulate coverage >50% coverage ale laboratory identification criteria observed least 20 unfolded or overlapped grid squares <5% F B C M >5u 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 =.CIus1er(>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_002923014

NYC-WTC_000226761