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NYC-WTC_000230288
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NYC 9/11 Public Portal Document
TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1944 Lab Group #: 6609 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 4 Grid Opening Size: 0.01124 Client Sample #: 4 Area Examined: 0.04496
GRID BOX: Magnification: 20,000 GRID ID : Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 2/9/02
Analysis Performed By: MARK PEYSAKHOV
GO. Structure Structure Type Length ID of Structure NorV EDS
No Coord No F B •cM >=05 (J <5u Chrys Amphibole Nonasb Ambig/ND (Nonadb Elements).
Struct = > O.Sp .>5:1 Aspect Ratio Grid acceptance: 'J= Positive diffraction pattern properties conforming 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 >5p ^= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile "amphiboles Amphibole F = Single Fiber 'l Arriosite 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
CONFIDENTIAL, CITY_21MC100_002723144 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000230288
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NYC-WTC_000230288Source: NYC Law Department, mirrored locally
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