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 #: Lab Sample #: Client Sample #: 9035 20 20 Filter Type / Filter Area: MCE 385 mm2 Grid Opening Size: 0.01124 Area Examined: 0.24728 mm2
GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 22 Analysis Date: 10/29/02
Analysis Performed By: kp- ROMAN PEYSAKHOV
GO. Structure Structure Type Length ID of Structure N or EDS (Nonadb No F B C M >=5 u >=5p Chrys Amphibole Nonasb Ambig/ND No ? Coord <5u Elements)
z i' z // 2
/• 152. i~
• !i i
i , rzi z. ~•
Ic ,. -
Photo No. m rn asbestos con1&Thno samores -- i Ana _______
P'fl' I ________ l _______ _______ ________ _______ ________
Struct = > 0.5p >5:1 Aspect Ratio <50% undissolved fifter, overlapped or folded Totals 4= Positive diffraction pattern properties conforming to <10% particulate coverage >50% coverage ate laboratory identification critena observed least 20 unfolded or overlapped grid squares <5% F B C M >5. holes or opaque areas ~I= EDS spectrum conforming to laboratory Chrysotile identification criteria observed AMPHIBOLES Amphibole. F = Single Fiber Amosite 3 = Bundle (<3 fibers <1 fiber diameter apart Crocidollte Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos M = Matrix Tremolite Actinolite Non-Identified NSD = No Structures Detected
NYC-WTC 000131686
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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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