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
P (a.' L I Cl/- <---._
TEM Asbestos (air) Count Sheet Client Name: ATC Volume (liters): 3600
• Lab Group #: Lab Sample #: 9041 16 Filter Type / Filter Area: MCE 385 mm2 Grid Opening Size: 0.01124 0.24728 mm2 Client Sample #: 19 Area Examined: GRID BOX: 1g 7S Magnification: 20,000 GRID ID: _______ Accelerating Voltage: 100 KeV # Grid Openings: 22 Analysis Date: 10/30/02
Analysis Performed By: _ R! ROMAN PEYSAKHOV
GO. I Structure Structure Type Length ID of Structure Nor EDS No F B C M (Nonadb >05 u >=5p Chrys Amphibole Nonasb Ambig/ND No Coord <5µ Elements)
'2/V2. 7 1 s v 2
3~3 t✓ • z
G 1(-7S- io a
tc c '? `Z Z. /0
1 8F Z /33 A Photoo. m 1 in 5 asbestos containina samples Tlu au epttuicz. Struct = > 0.5N > 5:1 ASpect Ratio <50% undissolved filter, overlapped or folded Totals i= 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 >5u holes or opaque areas J= EDS spectrum conforming to laboratory Chrysotile i~ — identification 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 _ I NSD = No Structures Detected
NYC-WTC 000131512
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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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