Chain of custody and cover letter for transmission electron microscopy analysis of air samples from apartments at 125 Liberty Street.
NYC-WTC_000131492–000131727
OCR status: ok · source: pdftotext
NYC 9/11 Public Portal Document
TEM Asbestos (air) Count Sheet Client Name: ATC Volume (liters): 3600 Lab Group #: 9041 Filter Type / Filter Area: MCE 385 mm2 Lab Sample #: 15 Grid Opening Size: 0.01124
Client Sample #: 18 Area Examined: 0.24728 mm2
GRID BOX: /4'7S Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 22 Analysis Date: 10/30/02
-F--'' Analysis Performed By: ROMA PEYSAKHOV
GO. Structure Structure Type Length ID of Structure N or EDS (Nonadb No F B C M > 05 u >=5p Chrys Amphibole Nonasb Ambig/NO Elements) No Coord <5µ l 1tiZ 2-- V 3 t?'3 rc3 CJ — T 7 7 z 2 • C 2- i1 l :sue ~v F l l3 13 &- (V-14 LM i 7 ,1S` 1 / 2z- i
2. Z3 — -
Zl P Z -3 ZZ.V /
^ Photo No. (from 1 in 5 asbestos containing samples) 9 Grid acceptance: SiruCt = > 0.5p .> 5:1 Aspect Ratio <50% undissolved filter. overlapped or folded Totals ' Positive diffraction pattern properties conforming to <10% particulate coverage >50% coverage ate laboratory identification criteria observed least 20 unfolded or overlapped grid squares <5% j F B C M >5N holes or opaque areas = EDS spectrum conforming to laboratory —
v Chrysotile ( dentification criteria observed AMPHIBOLES Amphibole { F= Single Fiber Amosite Ambiguous i B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos I = Tremolite M Matrix Non-Identified I NSD = No Structures Detected Actinolite I— - L - --
NYC-WTC 000131511
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Chain of custody documentation for background sampling including asbestos and lead at 250 Broadway in September 2001.
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Summary of transmission electron microscopy results for asbestos samples from 250 Broadway dated September 16, 2001.
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Report of transmission electron microscopy analysis for bulk samples from 250 Broadway dated September 16, 2001.
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A document label identifying the location as 140 Broadway and 70 Liberty Street with a unique NYC-WTC tracking number.
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Custody form documenting the transfer and analysis of air samples collected at 125 Water Street in September 2002.
14 shared non-person entities · similarity 0.946
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000095478
Cover page for an air monitoring and bulk sampling report for Building #200 at 375 South End Avenue.
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machine-extracted · confidence unavailable · Check page ↗Similar subjects in other documents. Similarity does not establish the same event, measurement or conclusion.
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NYC-WTC_000123875
Letter from environmental consultants summarizing ambient air sampling and cleanup activities at 225 Rector Place.
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Second volume of ambient air sampling and visual observation results for 105 Duane Street after the WTC collapse.
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