NYC-WTC_000228530

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet CKent Name; C BOE Volume (litersI: 1920 Lab Group 7392 Filter Tvpe / Filter Area: MCE ?S Lab Sample 14 Grid Opening Size: 0.01124

Client Sample #: 16 Area Examined: 0.04496 nim-

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 4/13.02

Analysis Performed By: MARK PEYSAKHOV

GO. ! Structure Structure Type Length :D or StlucSure N or < {Ncnadb No F B C M >-05 p >=5p Chrys Amphibole Nonasb Amtxgt'NO No Coord <5u Elements)

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Struct ■ > 0.5n >5:1 Aspect Ratio Grid acceptance; 'Z' Positive diffraction pattern properties conforming to Totals ■— r--------- '— ------ ------------- --------------- laboratoiy identtficaeon criteria ODseived <10% partculate coverage >50% coverage ate least 20 unfolded or overiapped grid squares <5% F B C M >5m '/'EDS spectrum conforming to latxiratoty 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 I Non-Asbestos Tremolite j M' Matrix I Actinolite । Non-Identified NSO ' No Structures Detected

CITY_21MC100_002900880

NYC-WTC_000228530