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NYC-WTC_000217204
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NYC 9/11 Public Portal Document
TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume niters): 1924 Lab Group #: 7900 Filter Type / Filter Area: MCE 385 mm" Lab Sample #: 16 > Grid Opening Size: 0.01124 Client Sample #: 19 Area Examined; 0.04496 mm" GRID BOX: Magnification; 20,000 GRIDID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date; 5/29/02
Analysis Performed By: ROMAN PEYSAKHOy
GO. Structure Type Length ID of Structure N or ■'/ EDS (Nonadb F B C M >=05 M >=5m Chrys Amphibole Nonasb Ambig/ND Elements) I /I No Coord <5p
Struct = > 0.5p > 5:1 Aspect Ratio Grid acceptance: ■/= Positive diffraction pattern properties conforming to <50% undisso^ed filter, overiapped 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 >5m EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Aiposite 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
CITY_21MC100_000465282 NYC-WTC_000217204
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NYC-WTC_000217204Source: NYC Law Department, mirrored locally
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