NYC Law Department release
Independent mirror · updated as the City releases more · v1.3.2
☕ Buy me a coffee
← Document results/Unboxed/No folder label
Document / 1 page

Asbestos air monitoring TEM analysis, Aug 2002

Machine-extracted title · confidence 95%

Transmission electron microscopy report documenting asbestos fiber counts in air samples collected on August 25, 2002.

NYC-WTC_000175190
Page image
Scanned page image, NYC-WTC_000175190
OCR text

OCR status: ok · source: pdftotext

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1928 Lab Group #: 8760 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 2 Grid Opening Size: 0.01124 Client Sample #: 2 Area Examined: 0.04496 mm^ GRIB BOX: Magnification: 20 000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Pate: 8/25/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or V EDS (Nonadb No F B C M ’=05 p >=5|J Chrys Amphibole Nonasb Ambig/ND No ^oord Elements) <5p

Struct = > 0.5p >5:1 Aspect Ratio Grid acceptance; N Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Tot^ laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5p •/= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile amphiboles Amphibole E = Single Fiber Amosite B = Bundle (<3 fibers <1 liber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Actinolite Non-Identified USD = No Structures Detected

CONFIDENTIAL, CITY_21MC100_003430553 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000175190

OCR can misread numbers and units. Confirm readings against the page image before using them.

NYC-WTC_000175190Source: NYC Law Department, mirrored locally

Related records

Browse subjects →

Ranked by indexed similarity. Reasons describe shared subjects and filing context; check the source records.

Same-box records

Filed elsewhere

No available related records indexed in this group.

More like this page

Similar subjects in other documents. Similarity does not establish the same event, measurement or conclusion.

Others also read

Readers open these alongside this record — through an Ask answer, the same folder, or indexed similarity. Not a claim they are about the same event.

TEM Asbestos air sample results, NYC BOE, Feb 2002

NYC-WTC_000180877

Laboratory report documenting transmission electron microscopy analysis of an air sample collected from a New York City Board of Education site on February 2, 2002.

Similar indexed content

Compare copies and versions →