TEM asbestos air sample results, NYC BOE, Feb 2002

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client Name: m’C BOE Volume (liters): 1S32 Lab Group #: 6631 Filter Type / Filter .Area: MCE 3S5 mm- Lab Sample #: 17 Grid Opening Size: 0.01124 Client Sample #: 20 Area Examined: 0.04496 mm- GRID BOX: Magnification: 20.000 GRID ID: -Accelerating Voltage: 100 KeV # Grid Openings: 4 -Analysis Date: 2/11/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure Norv EDS No >=05 p (Nonadb F B C M ■=5|J Chrys Amphiboie Nonasb Ambig/ND No Coord <5p Elemenls)

50L 1 (RZ- JL If

Struct = > 0.5)1 -> 5:1 Aspect Ratio Grid accaptance: Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% I F I B I C I M j ’5u EDS spectrum conforming tc iaboratory holes or opaque areas idemification criiena ocserved Chry'soiile j i ! amphiboles ! Amphibole ' I i F = Single Fiber Amosite 5 = Suncis (<3 fibers <1 fiber diameter apart Crocidolite -Ambiguous ' C = Cluster ;>3 intersections) Anthophyllite Non-Asbestos : i Tremolite M = Matrix I Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_003103134

NYC-WTC_000183760