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 Asbesfos (air) Count Sheet Client Name: ATC Volume (liters): 3600
0 Lab Group#: Lab Sample #: 9041 17 Filter Type / Filter Area: MCE 385 mm' Grid Opening Size: 0.01124 Client Sample #: 20 Area Examined: 0.04496 rni2
GRID BOX: 75 ' Magnification: 20,000 GRIDID: AA/ Accelerating Voltage: 100 KeV # Grid Openings: 4 2 2- Analysis Date: 10/30/02
Analysis Performed By: ROMAN PEYSAKHOV
• Siiiirrtf■■■■_-__~_- I
■■■©___
•
~ f,u N~~1~. Struct = > 0.5i >5:1 Aspect Ratio <50% undissolved filter, overlapped or folded Totals .1= 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 >5N ,, holes or opaque areas 1= EDS spectrum conforming to laboratory Chrysotile ider ti ication criteria observed AMPHIBOLES Amphibole. F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected
NYC-WTC 000131619
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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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