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TEM Asbestos air sample results, NYC SCA, June 2002
Machine-extracted title · confidence 95%Laboratory report documenting transmission electron microscopy analysis of an air sample collected from a New York City School Construction Agency site.
NYC-WTC_000185094Page image
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NYC 9/11 Public Portal Document
TEM Asbestos (air) Count Sheet Client Name: NYC SCA Volume (liters): 1936 Lab Group #: 5801 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 7 Grid Opening Size: 0.0U24 Client Sample #: 7 Area Examined: 0.04496 mm^ GRID BOX: Magnification: 20 000 GRID ID: # Grid Openings: 4 Accelerating Voltage: 100 KeV
Analysis Performed By: ROMAN PEYSAKHOV
GO. Structure Structure Type Length ID of Structure Nory EDS No (Nonadb F B C M >=05 U >=5|j Chrys Amphitwle Nonasb Ambig/ND No I Coord <5m Elements)
/ i P-ZL 7^ Q t/
yV
Struct = > 0.5(1 > 5:1 Aspect Ratio Grid acceptance: •7= Positive diffraction pattern prooerties confonning to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5u y'= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos T remolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected
CITY_21MC100_003106033
NYC-WTC_000185094
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NYC-WTC_000185094Source: NYC Law Department, mirrored locally
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