NYC-WTC_000182734

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1944 Lab Group #: 5849 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 12 Grid Opening Size: 0.01124 Client Sample #: 12 Area Examined: 0.04496 -------------------- GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 11/8/01

Analysis Performed By: MARKPEYSAKHOV

GO. Structure Structure Type Length ID of Structure Nor \ EDS (Nonadb No F B C M >=05 p Chrys Amplibole Nonasb Amblg/ND No Coord <5m Elements)

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___________________ 1__1_„__ Struct = > 0.5p >5:1 Aspect Ratio Grid acceptance: Positive diffraction pattern properties confomiing to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria obsenred <10% parficulafe coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5u 7= 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 Tremolite M = Matrix Actinolite i Non-Identified NSD = No Structures Detected

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NYC-WTC_000182748