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TEM Asbestos air sample results, NYC BOE, Dec 2001

Machine-extracted title · confidence 95%

Laboratory record documenting transmission electron microscopy analysis of an air sample collected for the NYC Board of Education.

NYC-WTC_000183981
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Scanned page image, NYC-WTC_000183981
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OCR status: ok · source: pdftotext

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: WC BOE Volume (liters): 1936 Lab Group 6028 Filter Type / Filter Area: MCE 385 mm" Lab Sample #: 1 Grid Opening Size: 0.01124 Client Sample #: Area Examined: 0.04496 mm" GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 12/4/01

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or v' EDS No (Nonadb F B C ! M >=05 |J >=5|j Ctirys Amphibole Nonasb AmbigZND Elements) No Coord ! <5p

Struct = > CrSu > 5:1 Aspect Ratio Grid acceptance:

ppsitive rfiffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria ooserved <10% particulate coverage >50% coverage ate least 20 unfolded or overtapped gnd squares <5% C M >5p : V= EDS spectrum conforming to laboratory' holes or opaque areas F I B identhcatlon criteria observed AMPHIBOLES Chn'sotile I Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous I Antbopbyliite 1 C = Cluster !>3 intersections) Non-Asbestos Tremolite | M = Matrix Actinolite Non-Identified NSD = No Structures Detected

CITY_21MC100_003104464

NYC-WTC_000183981

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NYC-WTC_000183981Source: NYC Law Department, mirrored locally

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