Report of transmission electron microscopy analysis for bulk samples from 250 Broadway dated September 16, 2001.
NYC-WTC_000105971–000105974Folder label: “250 BROADWAY; Block: 124 Lot: 24 BIN: 1001408 245 Broadway, 2-4 Murray St. 1-7 Park Pl, 239- 247 Broadway”
OCR status: ok · source: pdftotext
NYC 9/11 Public Portal Document
09/17/2001 00:36 2123533599 ATC ASSOCIATES INC PAGE 02/03
ATC ASSOCIATES INC. - NOB ANALYSIS Batch No. S Grid Box No. 1/ ,9 0 Operator R Sample No. '~ ~K ` / 24" / Grid I.D. Date g • /6.
-M E UIN
- __S... v
.C:: .~ F= Single g' Fiber (1-3 intersections = 1-3 fibers) A3iPHIHOLES B= Bundle >3 fibers <1 fiber diameter apart) Amosite C= Cluster .3 intersections) CrocidoLite M= Matrix Anthophyllite Tremolite NSD= No Structures Detected A tinolite
Positive diffraction pattern observed conforming to identification criteria. For chrysotile: 7.3A spacing for 020 reflections (= 80um objective aperture), 5.3A spacing for the layer-line repeat (= 1/3 80um objective aperture), 110 and 130 streaks and presence of 002 and 200 reflections. For amphiboles: 5.3A layer-line repeat and approximate 3.5 ratio of non -twinned layer-line reflection spacing to layer-line repeat distance.
EDX spectrum observed conforming to identification criteria. Minimum Requirements: Identify 4 fibers by electron diffraction. Chrysotile: 5.3A layer-line (row) spacing with correct 020. 002, 110, 130 and 200 points or streaks. Amphibole: Correct 5.3A. layer-line spacing. EDX Requirements: Chrysotile: none. ' 4mpbibole: identify amphibole species by EDX.
QYJANTITATION: Estimated Percent Asbestos on: Grid 1: Grid 2: Mean (N): Percent Asbestos in Subsample: (N X K)/G:
From PLM NOB ANALYSIS SHEET: 10 X 11 = 14 where 10 = total residue %, ii. = residue asb % TEM and 14 = total % asb & type. Also, 1% total asbestos = 100/total residue . VATr mmJ\wa% X L$.D 7~13/9G L•\5LT.'. P
NYC-WTC 000105972
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NYC-WTC_000106077
Chain of custody documentation for background sampling including asbestos and lead at 250 Broadway in September 2001.
9 shared non-person entities · Same agency, volume and box · similarity 0.964
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000104321
Second volume of ambient air sampling and visual observation results for 105 Duane Street after the WTC collapse.
9 shared non-person entities · similarity 0.958
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000104027
Summary of ambient air sampling and visual observations at 105 Duane Street following the WTC collapse.
9 shared non-person entities · similarity 0.956
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000131492
Chain of custody and cover letter for transmission electron microscopy analysis of air samples from apartments at 125 Liberty Street.
9 shared non-person entities · similarity 0.947
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000174896
Laboratory report documenting transmission electron microscopy analysis of air samples collected from floors 16-18 in October 2001.
3 shared non-person entities · similarity 0.947
machine-extracted · confidence unavailable · Check page ↗7 shared non-person entities · similarity 0.946
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000177619
Technical data sheet recording microscopic observations and measurements of fiber structures from air samples analyzed by transmission electron microscopy.
7 shared non-person entities · similarity 0.945
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000182540
Laboratory transmission electron microscopy report documenting the analysis of a bulk air sample for asbestos fibers.
7 shared non-person entities · similarity 0.945
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000123875
Letter from environmental consultants summarizing ambient air sampling and cleanup activities at 225 Rector Place.
9 shared non-person entities · similarity 0.945
machine-extracted · confidence unavailable · Check page ↗7 shared non-person entities · similarity 0.944
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000174879
Laboratory report documenting asbestos fiber analysis by transmission electron microscopy for a site in New York on September 25, 2001.
3 shared non-person entities · similarity 0.944
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000182538
Laboratory transmission electron microscopy report documenting the analysis of a bulk air sample for asbestos fibers.
7 shared non-person entities · similarity 0.943
machine-extracted · confidence unavailable · Check page ↗Similar subjects in other documents. Similarity does not establish the same event, measurement or conclusion.
NYC-WTC_000188691
Technical data sheet listing microscopic measurements and structural identification for samples analyzed by transmission electron microscopy.
Similarity score 0.959 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000174912
Laboratory transmission electron microscopy analysis report for sample 62009 dated October 23, 2001.
Similarity score 0.957 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000188484
Laboratory report documenting transmission electron microscopy analysis of an air sample collected on October 28, 2001.
Similarity score 0.957 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000188721
Raw data sheet from ATC Associates containing transmission electron microscopy analysis details for asbestos fiber identification in air samples.
Similarity score 0.957 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000188682
Laboratory report documenting transmission electron microscopy analysis of asbestos samples collected from a New York City Department of Education site in October 2001.
Similarity score 0.957 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000174854
Detailed technical data sheet for transmission electron microscopy analysis of air sample 59742 from the September 2001 monitoring campaign.
Similarity score 0.957 (not a probability)
machine-extracted · confidence unavailable · Check page ↗Machine-extracted building matches; verify each source. Buildings, never households.
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.
NYC-WTC_000105958
Letter dated July 31, 2002, regarding conditions for a proposed license agreement at 250 Broadway.
Filed in the same folder
NYC-WTC_000105961
Report of environmental sampling and cleanup activities at 250 Broadway dated October 11, 2001.
Filed in the same folder
NYC-WTC_000105975
Summary of transmission electron microscopy results for asbestos samples from 250 Broadway dated September 16, 2001.
Filed in the same folder
NYC-WTC_000105988
Laboratory report on asbestos fiber analysis by transmission electron microscopy for 250 Broadway dated October 1, 2001.
Filed in the same folder
NYC-WTC_000105990
Laboratory report detailing lead analysis results from dust wipe samples at 250 Broadway dated October 2, 2001.
Filed in the same folder