Chain of custody documentation for background sampling including asbestos and lead at 250 Broadway in September 2001.
NYC-WTC_000106077–000106100Folder 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
2123533599 ATC ASSOCIATES INC PAGE 02/E . 09/17/2001 00:36
ATC ASSOCIATES INC. - NOB ANALYSIS Batch No. S ~ 11106/~ Grid Box No. Operator 1 !l Sample No. y `6 IIá ` / Grid I.D. 2410 Date /6 d
'=4-■■■ Ru- -I■■ ► I w - URuUR
F= Single Fiber (1-3 intersections = 1-3 fibers) AMPHIBOLE B= Bundle (:3 fibers <1 fiber diameter apart) Amosite C= Cluster >3 intersections) Crocidolit M= Matrix Anthophylb TremolitE NSD= No Structures Detected Actinolite
Positive diffraction pattern observed conforming to identification criteria For chrysotile: 7.3A spacing for 020 reflections (= 60urn objective aperture), 5.3A spacing for the layer -line repeat (= 1/3 60urn objective aperture), 110 an 130 streaks and presence of 002 and 200 reflections. For amph.iboles: 5.3A layer-line repeat and approximate 3.5 ratio of non-tirinn 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. ' Ampbibole: identify amphibole species by EDX.
QVANTTTATX0N: 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 & is Also, 1% total asbestos = 100/total residue %. tt\3ALA~ P=vAS11ta3z%c►Dc% X *M3D
NYC-WTC 000106094
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Ranked by indexed similarity. Reasons describe shared subjects and filing context; check the source records.
NYC-WTC_000105975
Summary of transmission electron microscopy results for asbestos samples from 250 Broadway dated September 16, 2001.
8 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.992
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000105988
Laboratory report on asbestos fiber analysis by transmission electron microscopy for 250 Broadway dated October 1, 2001.
6 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.976
machine-extracted · confidence unavailable · Check page ↗7 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.971
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.
11 shared non-person entities · 1 shared topics · similarity 0.981
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.
12 shared non-person entities · 1 shared topics · similarity 0.978
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000129725
Custody form documenting the transfer and analysis of air samples collected at 125 Water Street in September 2002.
6 shared non-person entities · similarity 0.975
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.
6 shared non-person entities · 1 shared topics · similarity 0.974
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000174899
Laboratory report documenting transmission electron microscopy analysis of air samples collected from multiple floors in October 2001.
6 shared non-person entities · 1 shared topics · similarity 0.973
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000174878
Laboratory report documenting asbestos fiber analysis by transmission electron microscopy for a site in New York on September 25, 2001.
6 shared non-person entities · 1 shared topics · similarity 0.973
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000174905
Laboratory report documenting transmission electron microscopy analysis of air samples collected from multiple floors in October 2001.
6 shared non-person entities · 1 shared topics · similarity 0.972
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000174903
Laboratory report documenting transmission electron microscopy analysis of air samples collected from multiple floors in October 2001.
6 shared non-person entities · 1 shared topics · similarity 0.972
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.
5 shared non-person entities · 1 shared topics · similarity 0.971
machine-extracted · confidence unavailable · Check page ↗Similar subjects in other documents. Similarity does not establish the same event, measurement or conclusion.
NYC-WTC_000105971
Report of transmission electron microscopy analysis for bulk samples from 250 Broadway dated September 16, 2001.
Similarity score 0.997 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000105971
Report of transmission electron microscopy analysis for bulk samples from 250 Broadway dated September 16, 2001.
Similarity score 0.992 (not a probability)
machine-extracted · confidence unavailable · Check page ↗Similarity score 0.991 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000182609
Technical data sheet recording transmission electron microscopy parameters and structural identification for asbestos fiber analysis samples.
Similarity score 0.965 (not a probability)
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.
Similarity score 0.963 (not a probability)
machine-extracted · confidence unavailable · Check page ↗Similarity score 0.963 (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_000106015
Chain of custody documentation for lead dust wipe samples collected at 250 Broadway in September 2001.
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NYC-WTC_000146129
Correspondence from NYC Corporation Counsel providing comments on excerpts of a draft EPA evaluation report regarding the WTC response.
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NYC-WTC_000097203
Identifier page for a document within the DEP Box 33 collection related to environmental records.
Cited alongside this record in an Ask answer
Cited alongside this record in an Ask answer
NYC-WTC_000102902
Documentation tracking the collection and transport of lead wipe samples from unit ventilators at a World Trade Center site location.
Cited alongside this record in an Ask answer