NYC-WTC_000223897

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #: 7828 Filter Type / Filter Area: MCE 385 mm’ Lab Sample 2 Grid Opening Size: 0.01124

Client Sample #: 02 Area Examined: 0.04496 mm- GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 5/21/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Struchire Type Length ID of Structure N or v EOS No (Nonadb i F B C M >=05 M >=5m Chrys Amphibole Nonasb Ambig/ND No Coord <5m Elements) i

Struct = > 0.5m * 5; I Aspect Ratio Grid acceptahce; Positive diffractiat pattern pmperties conforming to Totals Iab»■*»>A* laboratory identification criteria observed <10% paniculate coverage >50% coverage ate least 20 unfolded or overiapped grid squares <5% F B i C ■ M yt* 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 I G = Cluster (>3 Intersections) Anthophyllite Non-Asbestos M = Matrix Tremolite L Non-Identitled i j Actinolite NSO = No Structures Detected

CITY_21MC100_002920125

NYC-WTC_000223897