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TEM asbestos air count sheet

Machine-extracted title · confidence 100%

Laboratory bench sheet tallying asbestos structures seen by electron microscope for an air sample; raw counts, not the reported result.

NYC-WTC_000229362
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NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client Name: NYC BOE Volume (liters): 1800 Lab Groop #: 8242 Filter Type Z Filter Area: MCE 385 mm" Lab Sample #: 1 Grid Opening Size: 0.01124 Client Sample #: 03 Area Examined: 0.04496 mm" GRIP BOX: Magnification: 20

GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 6/23/02

Analysis Performed By; MARKPEYSAKHOV

GO Structure Structure Type Length IDofSbucture N or v EDS No (Nooadb F B C M »05p >=5p Chrys Amphibote Nonasb AmbW) No Coord <5p Elements]

7*^ - -v:.- —c—

Struct" > 0.5g > 5:1 Aspect Ratio Grid acceptance: -h Positive diffraction pattern properties conforming to <50% undiBSOtved Alter, overlapped orfoldad Totals laboratory idertgAcaSon criteria observed <10% particulate overage >50% coverage ate

EDS spectrum conforming to laboratory least 20 urfoBed or overlapped grid squares <5% holes or opaque areas F B c M >5p

identifrcason criterta observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite e = Bundle (<3 Abera <1 Aber diameter apart Crocidolite Ambiguous C = Cluster {>3 IntersecBons) Anttiopfiyilite Non-Asbestos Tremolite M = Matrix Actinolite ' Non-Identificd NSQ = No Structures Detected

CITY_21MC1OO_OO29O2446

NYC-WTC_000229362

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NYC-WTC_000229362Source: NYC Law Department, mirrored locally

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NYC-WTC_000228984

Laboratory bench sheet tallying asbestos structures seen by electron microscope for an air sample; raw counts, not the reported result.

Similarity score 0.995 (not a probability)

machine-extracted · confidence unavailable · Check page ↗
TEM asbestos air count sheet · page 1

NYC-WTC_000218044

Laboratory bench sheet tallying asbestos structures seen by electron microscope for an air sample; raw counts, not the reported result.

Similarity score 0.994 (not a probability)

machine-extracted · confidence unavailable · Check page ↗
TEM asbestos air count sheet · page 1

NYC-WTC_000220887

Laboratory bench sheet tallying asbestos structures seen by electron microscope for an air sample; raw counts, not the reported result.

Similarity score 0.994 (not a probability)

machine-extracted · confidence unavailable · Check page ↗

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