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) 3700 Lab Group #: 9035 Filter Type / Filter Area: MCE 385 mm2 •
Lab Sample #: 23 Grid Opening Size: 0.01124 Client Sample #: 23 Area Examined: 0.24728 mm2
GRID BOX: /417 3 Magnification: 20,000 GRID ID: z " Accelerating Voltage: 100 KeV # Grid Openings: 22 Analysis Date: 10/29/02
Analysis Performed By: Rl ROMAN PEYSAKHOV
GO. Structure Structure Type Length ID of Structure Nor EDS (Nonadb No F 8 C M >=05 to >=5p Chrys Amphibole Nonasb AmbiglND Elements) No Coord <5u /, JIS
y
7
f© /.d
lG a fr CO
P /- 4 z /J Rz__// __ _____ __ _____ ___
A Photo Na. tfrorn I in 5 asbestos conrai inc samo es VIN au;apwinz. StruCt = > 0.5}u > 5:1 Aspect Ratio <50% undissolved filter, overlapped or folded Totals d= Positive diffraction pattern properties conforming to <10% particulate coverage >50% coverage ate laboratory identification criteria observed least 20 unfolded or overlapped grid squares <5% F B C M holes or opaque areas v= EDS spectrum conforming to laboratory Chrysotile
S identification criteria observed F = Single Fiber B = Bundle (<3 fibers <1 fiber diameter apart AMPHIBOLES Arnosite Crocidolite Amphibole Ambiguous j l C = C:uster (>3 Intersections) Anthophyllite Non _Asbestos i Tremolite .M = Matrix Actinolite Non-Identified NSD = No Structures Detected
NYC-WTC 000131560
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Custody form documenting the transfer and analysis of air samples collected at 125 Water Street in September 2002.
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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
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